Buckets and construction machinery

Abstract

This invention provides a new construction equipment bucket and construction machine capable of granulating scooped-up soil clumps. [Solution] A construction machine bucket 1, which is attached to the tip of the arm of a construction machine, comprises a pair of left and right side plates 10 and a grid-like skeletal structure 20 provided between each side plate 10. The skeletal structure 20 includes a plurality of vertical skeletal members and a plurality of horizontal axes 22 for connecting each vertical skeletal member. Each vertical skeletal member includes ribs 30, 40 with a plurality of protrusions 32, 42 formed on its inner periphery.

Description

Technical Field

[0004]

[0001] The present disclosure relates to a bucket for construction machinery and construction machinery.

Background Art

[0002] Conventionally, various buckets for construction machinery have been known. In Patent Document 1, by providing a vertical blade 51 and a horizontal blade 52 respectively, the bucket 1 is rotated, moved back and forth, or moved up and down with respect to the soil mass that has entered the bucket 1, and the soil mass is granulated by crushing it with the vertical blade 51 and the horizontal blade 52. Further, in Patent Document 2, the rear opening 16 of the bucket is partitioned into a lattice shape by connecting each vertical bar 17 with a horizontal bar 18, and three earth-cutting members 2 are respectively fixed to the vertical bars 17 of the rear opening 16, and the large块状 soil excavated by these earth-cutting members 2 is divided into small pieces in advance. The technology is described.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the inventions disclosed in Patent Document 1 and Patent Document 2, members (vertical blade 51, horizontal blade 52, earth-cutting member 2, etc.) for granulating the soil mass scooped up by the bucket are attached inside the bucket. However, when such a member for granulating the soil mass is attached inside the bucket, there is a problem that the weight of the bucket increases and the working efficiency decreases. Further, when a member for granulating the soil mass is attached inside the bucket, there is a problem that the capacity inside the bucket becomes small and the amount of earth and sand that can be scooped up by the bucket decreases.

[0005] This disclosure has been made with these points in mind and aims to provide a new construction machine bucket and construction machine capable of granulating scooped-up soil clumps. [Means for solving the problem]

[0006] A construction bucket, which is attached to the end of the arm of a construction machine, A pair of left and right side panels, A grid-like skeletal structure is provided between each of the aforementioned side plates, Equipped with, The aforementioned skeletal structure includes a plurality of vertical skeletal members and a plurality of horizontal axes for connecting each of the vertical skeletal members, Each of the aforementioned vertical skeletal members is characterized by including a rib with a plurality of protrusions formed on its inner periphery. [Effects of the Invention]

[0007] The construction machine bucket and construction machine of this disclosure make it possible to granulate scooped-up soil clumps without reducing work efficiency or decreasing the capacity inside the bucket. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing the overall configuration of a construction machine bucket according to one embodiment of the present invention. [Figure 2] Figure 1 is a side view of the first rib that constitutes the bucket for construction machinery. [Figure 3] Figure 1 is a side view of the second rib that makes up the bucket for construction machinery. [Modes for carrying out the invention]

[0009] Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals will be used for identical components, and redundant descriptions will be omitted.

[0010] Figure 1 is a perspective view showing the overall configuration of a construction machine bucket 1 according to one embodiment of the present invention. The construction machine bucket 1 of this embodiment is a type of attachment used by being mounted on the tip of the arm of a construction machine such as a hydraulic excavator (power shovel). This construction machine bucket 1 has the function of mainly selecting (screening) lumps of a predetermined size or larger from excavated soil and sand, concrete rubble, and waste materials generated from demolition, and crushing those lumps.

[0011] As shown in Figure 1, the construction machine bucket 1 is broadly composed of a pair of left and right side plates 10 and a frame structure 20 installed between these side plates 10. The opening end of the bucket 1 is provided with multiple teeth 50 to facilitate penetration into the object to be excavated.

[0012] The side plates 10 are plate-shaped members that make up the left and right sides of the construction machine bucket 1. A pair of side plates 10 are arranged facing each other so as to be parallel to each other. The rear end (upper part in Figure 1) of each side plate 10 is provided with a mounting portion 12 for connecting to the arm of the construction machine. The mounting portion 12 has a bracket-like structure with multiple axial holes and is rotatably connected to the tip of the arm via a pin or the like.

[0013] The side plate 10 comes into direct contact with soil and rocks during excavation work, and therefore requires high durability. For this reason, the side plate 10 in this embodiment is made of wear-resistant steel plate, which has excellent abrasion resistance. Wear-resistant steel plate has extremely high hardness compared to general steel materials, effectively suppressing wear and tear on the components. In addition, since wear-resistant steel plate is also a high-strength material, even if the thickness of the side plate 10 is designed to be thin, sufficient rigidity and strength can be ensured for the bucket as a whole. This leads to a reduction in the overall weight of the bucket, contributing to improved work efficiency and fuel efficiency of construction machinery.

[0014] The frame structure 20 is provided between a pair of side plates 10 and forms the bottom surface and the rear surface of the bucket 1 for construction machinery. This frame structure 20 is formed in a lattice shape (skeleton structure) and has a function as a screen that allows those smaller than the mesh of the lattice among the excavated earth and sand, etc. to pass through and retains those larger inside the bucket.

[0015] The frame structure 20 mainly comprises a plurality of longitudinal frame members extending along the front-back direction (excavation direction) of the bucket 1 and a plurality of cross shafts 22 connecting these longitudinal frame members in the width direction of the bucket 1. In the present embodiment, the longitudinal frame members are constituted by a first rib 30 and a second rib 40, which will be described later.

[0016] The first rib 30 and the second rib 40 are important components that bear the main strength of the frame structure 20 and have a crushing function for the object. As shown in FIG. 1, the plurality of first ribs 30 and second ribs 40 are arranged at a predetermined interval along the width direction of the bucket 1 and parallel to the side plates 10.

[0017] FIG. 2 is a side view of the first rib 30, and FIG. 3 is a side view of the second rib 40. As shown in FIGS. 2 and 3, each of the ribs 30, 40 is an arcuate plate-like member that smoothly curves from the bottom surface to the rear surface of the bucket 1. This arcuate shape is provided to smoothly perform the operation of scooping up earth and sand, etc.

[0018] Each of the ribs 30, 40 has a plurality of convex portions 32, 42 on its inner peripheral edge, that is, the edge facing the inside of the bucket 1. These convex portions 32, 42 are formed to protrude from the inner peripheral edge of the rib toward the inside of the bucket. In the present embodiment, the convex portions 32, 42 have a wave shape that smoothly bulges along the curvature of the rib. These convex portions 32, 42 are for applying locally high stress to hard objects such as concrete blocks and rocks held inside the bucket. Thereby, it has a function of making cracks more likely to occur in the object and improving the crushing efficiency.

[0019] In addition, a plurality of through holes 34 and 44 are formed in each of the ribs 30 and 40 along their longitudinal directions. These through holes 34 and 44 are used to insert a later-described horizontal shaft 22 therethrough and connect the ribs 30 and 40 to each other.

[0020] The first rib 30 and the second rib 40 are also made of wear-resistant steel plates, similar to the side plates 10. This suppresses wear due to contact and friction with hard objects, and the shapes of the ribs, particularly the convex portions 32 and 42 which are essential for the crushing function, can be maintained for a long time. Also, by using wear-resistant steel plates which are high-strength materials, the thickness of the ribs 30 and 40 can be reduced to, for example, about 12 mm, greatly contributing to the weight reduction of the entire bucket. The thinning of the ribs also has the effect of increasing the pressure when the convex portions 32 and 42 act on the object, further improving the crushing performance, similar to the fact that the sharper the blade, the easier it penetrates the object.

[0021] The horizontal shaft 22 is provided so as to penetrate a plurality of ribs 30 and 40 in the width direction of the bucket 1, and is a member that firmly connects them to ensure the rigidity of the skeletal structure 20. In the present embodiment, the horizontal shaft 22 is composed of a round bar with a circular cross section.

[0022] By making the horizontal shaft 22 a round bar, several advantages can be obtained. First, since there are no corners on the surface, the contact area with the excavation object is small and the frictional resistance is reduced. As a result, the earth and sand passing through the screen and small-diameter debris smoothly fall out, improving the screening efficiency. Second, it is difficult for highly viscous mud or earth and sand containing moisture to adhere. There are fewer places where mud accumulates compared to angular members, and it exhibits excellent mud shedding performance. This can prevent a decrease in work efficiency due to clogging even under conditions where mud easily adheres, such as after rain. The horizontal shaft 22 can also be composed of a wear-resistant steel plate as needed, thereby further enhancing the durability of the entire skeletal structure.

[0023] The skeletal structure 20 of the bucket 1 for construction machinery of the present embodiment is characterized in that it is composed by combining two types of members with different numbers and arrangements of convex portions, namely the first rib 30 and the second rib 40.

[0024] As shown in Figure 2, the first rib 30 has two protrusions 32 on its inner periphery. On the other hand, as shown in Figure 3, the second rib 40 has three protrusions 42 on its inner periphery.

[0025] As shown in Figure 1, in the skeletal structure 20, the first ribs 30 and the second ribs 40 are arranged alternately in the width direction of the bucket 1. In this case, the formation positions of the protrusions 32 and 42 of adjacent first ribs 30 and second ribs 40 are set to be offset from each other along the longitudinal direction of the ribs. That is, the phase of the mounting positions of the protrusions is different.

[0026] Specifically, when the first rib 30 and the second rib 40 are superimposed, the central protrusion 42 of the second rib 40 is positioned in the recessed area between the two protrusions 32 of the first rib 30. This staggered arrangement allows for a more complex and multi-point stress to be applied to the object held in the bucket. As a result, compared to arranging ribs of a single shape, the object can be effectively captured from various angles, increasing the effectiveness of crushing.

[0027] As described above, the main components of this embodiment, namely the side plate 10, the first rib 30, and the second rib 40, are made of wear-resistant steel plate. A specific example of wear-resistant steel plate is HARDOX® steel plate. This type of steel plate achieves both extremely high hardness and toughness, making it ideal as a component of a construction machine bucket 1 that is subjected to impact loads.

[0028] The use of wear-resistant steel plates not only extends the lifespan of the components, but also allows for thinner components due to their high strength, resulting in a lighter overall bucket. This weight reduction significantly contributes to improved operability and reduced fuel consumption of construction machinery, especially in large buckets. Furthermore, the high hardness of the material makes it less prone to surface roughening with use. Mud adhesion, a common problem at construction sites, tends to be exacerbated by increased friction coefficients as the component surface wears down and becomes rougher. By using components with smooth surfaces, as in this embodiment, the occurrence of the so-called mud clumping phenomenon is suppressed, and excellent mud drainage performance can be maintained over a long period of time.

[0029] Next, the operation of the construction machine bucket 1 according to this embodiment, configured as described above, will be explained in detail along with its usage process.

[0030] The construction machine bucket 1 of this embodiment is connected to the tip of the arm of a construction machine such as a hydraulic excavator via a mounting part 12. The operator operates the construction machine and bites the teeth 50 provided at the tip of the bucket 1 into the ground or pile of concrete rubble to be excavated, and drives the arm and bucket 1 to scoop up the target material into the bucket.

[0031] Of the scooped-up material, soil and small-diameter crushed stone that are smaller than the gaps between the first rib 30, the second rib 40, and the horizontal axis 22 that form the grid of the skeletal structure 20 will fall downward due to gravity by swinging the bucket 1 during or after the scooping operation. This efficiently separates (screens) lumps larger than a predetermined size from soil and other materials smaller than that size.

[0032] On the other hand, hard objects such as concrete blocks, demolition waste, and rocks that are larger than the mesh of the grid are held inside bucket 1. To further crush these hard objects, the operator swings bucket 1. This swinging motion causes the hard objects inside the bucket to roll along the inner surface of the skeletal structure 20, repeatedly colliding with the inner edges of the first rib 30 and the second rib 40.

[0033] Here, the inner edges of the first rib 30 and the second rib 40 are formed with multiple corrugated protrusions 32 and 42 that project inward towards the inside of the bucket. Therefore, when a hard object collides with the ribs 30 and 40, the contact is not on a plane, but rather closer to a point or line centered on the tops of the protrusions 32 and 42. As a result, the weight and kinetic energy of the object due to its oscillation are concentrated and transmitted to a narrow contact area. This localized stress concentration applies extremely high pressure to the hard object, generating minute cracks or extending existing cracks, effectively promoting fracture.

[0034] Furthermore, the skeletal structure 20 of this embodiment is constructed by alternately arranging first ribs 30, each having two protrusions 32, and second ribs 40, each having three protrusions 42, in the width direction of the bucket 1. The phase of the formation positions of the protrusions 32 and 42 in adjacent first ribs 30 and second ribs 40 is shifted along the longitudinal direction of the rib. This staggered arrangement allows multiple protrusions 32 and 42 to act on a single large object rolling inside the bucket from different positions and at irregular timings. As a result, the object is subjected to not only impact from a single direction, but also complex multi-angle stresses including twisting and bending. This multi-point action allows for more effective capture of the object and the application of crushing force from various angles, further increasing crushing efficiency compared to the case where ribs of a single shape are arranged at equal intervals.

[0035] During the screening and crushing processes, the horizontal axes 22 that constitute the skeletal structure 20 are made of round bars with a circular cross-section, resulting in a smooth, edgeless surface. This shape minimizes frictional resistance between the horizontal axes 22 and soil or small-diameter rubble. Furthermore, even when highly viscous mud or soil containing moisture, which can be problematic during operations after rain, enters the bucket, the mud is less likely to adhere and accumulate compared to angular components, allowing for smoother discharge downwards. This effectively suppresses clogging during screening.

[0036] The main components of this embodiment, the side plate 10, the first rib 30, and the second rib 40, are made of extremely hard, wear-resistant steel plates, such as HARDOX® steel plates. During excavation and crushing operations, these components come into intense contact and friction with soil and rocks, but the high hardness of the wear-resistant steel plates effectively suppresses wear on the surface of the components. In particular, the tops of the protrusions 32 and 42, which form the core of the crushing function, are prevented from becoming rounded or losing height due to wear, and the crushing performance as designed is maintained over a long period of time.

[0037] As described above, the construction machine bucket 1 according to this embodiment solves the problems of the prior art and provides the remarkable effects described below.

[0038] (1) Dramatic improvement in crushing efficiency Multiple protrusions 32 and 42 provided on the inner periphery of the first rib 30 and the second rib 40 concentrate stress on hard objects such as concrete blocks and rocks in the bucket, efficiently generating cracks in the objects and enabling rapid crushing. Furthermore, by arranging the first rib 30 and the second rib 40, which have different numbers and positions of protrusions, alternately, stress can be applied to the objects at multiple points and in a complex manner, further improving crushing efficiency. As a result, objects that were previously difficult to crush can be processed efficiently, and working time can be significantly reduced.

[0039] (2) Improved economic efficiency through superior durability and extended lifespan By constructing the side plates 10, first ribs 30, and second ribs 40, which are in direct contact with the excavated object and experience the most severe wear, from high-hardness wear-resistant steel plates, wear-related component loss can be significantly suppressed. In particular, the shape of the protrusions 32 and 42, which affect the crushing performance, is maintained for a long period, making it possible to use the bucket for an extended period while maintaining its initial high performance. As a result, the lifespan of the entire bucket is extended, and the frequency of component replacement and repair is reduced, significantly reducing maintenance costs and machine downtime. Furthermore, the frequency of emergency welding repair work at the site is reduced, contributing to improved safety during operation.

[0040] (3) Improved work efficiency and reduced environmental impact through weight reduction By utilizing the fact that wear-resistant steel plates are also high-strength materials, the overall weight of bucket 1 can be reduced by thinning ribs 30, 40, etc. This lighter bucket 1 reduces the load on the construction machine's arm, enabling more agile operation and reducing fuel consumption. This not only lowers running costs but also contributes to reducing carbon dioxide (CO2) emissions, thus reducing environmental impact. Furthermore, it becomes possible to equip construction machines of the same class with larger buckets 1 or increase the amount that can be scooped at once, improving overall work efficiency through a reduction in work cycle time.

[0041] (4) Excellent applicability to large buckets In conventional attachment systems, as the bucket 1 becomes larger, the weight of the attachment itself becomes excessive, negatively impacting the overall weight balance of the bucket and the work efficiency. In this embodiment, the ribs 30 and 40 themselves are equipped with a crushing function, and the weight is reduced by thinning the component parts, thus minimizing such problems. Therefore, the configuration of this embodiment can be easily applied to buckets for large construction machinery, dramatically improving work efficiency at sites where large quantities of rubble and rock need to be processed, such as large-scale demolition sites, quarries, and dam construction sites.

[0042] (5) High screening efficiency and excellent mud-shedding performance By constructing the horizontal axis 22 connecting the skeletal structure 20 with a round bar with a circular cross-section, soil and small-diameter debris can pass through smoothly without getting stuck, resulting in high screening efficiency. In addition, combined with the fact that the surfaces of the ribs 30, 40 and side plates 10, which are made of wear-resistant steel plates, are kept smooth, highly viscous mud does not easily adhere to it, resulting in excellent mud drainage performance. In conventional buckets, mud adheres and increases the weight, reducing the effective volume inside the bucket, so the operator had to periodically perform unproductive work such as hitting the bucket 1 on the ground to remove the mud. In this embodiment, such actions are unnecessary or greatly reduced, leading to a reduction in the burden on the operator and the maintenance of a work rhythm, and enabling stable, high-efficiency work to continue even in humid environments.

[0043] (6) High reliability and safety through structural simplification By integrating the crushing protrusions 32 and 42 with the ribs 30 and 40, or by forming the ribs themselves in a corrugated shape, it becomes unnecessary to attach separate soil-cutting materials or attachments with bolts or the like for crushing. This reduces the number of parts and simplifies the structure, thereby lowering manufacturing costs. Furthermore, serious failure risks such as bolt loosening due to severe vibrations during operation and the resulting detachment of attachments, as seen in attachment systems, are fundamentally eliminated. Attachment detachment can lead to serious property damage and personal injury, but this embodiment does not inherently contain such risks, allowing it to be used with extremely high reliability and safety, especially in urban construction sites where many workers are working in close proximity.

[0044] Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, in the above embodiments, the first rib 30 has two protrusions 32 and the second rib 40 has three protrusions 42, but the number of protrusions is not limited to this and can be arbitrarily set according to the design. Also, the types of ribs are not limited to two types, and it is possible to use a combination of three or more different types of ribs. Alternatively, constructing all vertical frame members with ribs of the same shape is also within the scope of the present invention.

[0045] The shape of the protrusions 32 and 42 is not limited to a smooth wave shape, but may also be a trapezoid, triangle, rectangle, or other shape that can concentrate stress on the object. The cross-sectional shape of the horizontal axis 22 is not limited to a circle, but may also be an ellipse or polygon. However, considering mud drainage and the passage of the object, a smooth shape with few corners is preferable.

[0046] Furthermore, although the above embodiment shows an example in which the side plate 10 and ribs 30 and 40 are made of wear-resistant steel plates, the effects of the present invention can be enjoyed as long as at least the ribs 30 and 40, which are directly involved in the crushing function, are made of wear-resistant steel plates. Moreover, by applying wear-resistant steel plates to other components such as the horizontal axis 22 and teeth 50, it is also possible to comprehensively improve the durability of the entire bucket.

[0047] <Note> The matters described in the above embodiments are noted below.

[0048] (Note 1) Bucket 1 for construction machinery is A construction machine bucket 1 that is attached to the tip of the arm of a construction machine, A pair of left and right side panels 10, A lattice-like skeletal structure 20 is provided between each side plate 10, Equipped with, The skeletal structure 20 includes a plurality of vertical skeletal members and a plurality of horizontal axes 22 for connecting each vertical skeletal member. Each vertical structural member includes ribs 30, 40, each having multiple protrusions 32, 42 formed on its inner periphery.

[0049] With this construction machine bucket 1, scooped soil clumps can be granulated without reducing work efficiency or decreasing the capacity inside the bucket. Due to the localized stress concentration, extremely high pressure is applied to hard objects, generating micro-cracks or extending existing cracks, thereby effectively promoting crushing.

[0050] (Note 2) In the construction machine bucket 1 described in Appendix 1, The ribs 30 and 40 include plate-like members that extend parallel to each side plate 10.

[0051] With this type of construction machine bucket 1, the ribs 30 and 40 are primarily responsible for the strength of the skeletal structure 20, and it can effectively sort soil and other materials and hold hard objects.

[0052] (Note 3) In the construction machine bucket 1 of Appendix 1 or 2, Ribs 30 and 40 are curved, bow-shaped members that run along the bottom and back surfaces of bucket 1.

[0053] With this type of construction machine bucket 1, the curved, bow-like shape allows for smooth scooping of soil and other materials.

[0054] (Note 4) In any of the construction machine buckets 1 described in Appendix 1 to 3, The protrusions 32 and 42 formed on the ribs 30 and 40 are wave-shaped.

[0055] With this construction machine bucket 1, when a hard object collides with the ribs 30 and 40, the contact is not on a plane, but rather a point or line centered on the tops of the protrusions 32 and 42. As a result, the weight of the object and the kinetic energy due to its oscillation are concentrated and transmitted to a narrow contact area, effectively promoting crushing.

[0056] (Note 5) In any of the construction machine buckets 1 described in Appendix 1 to 4, Through holes 34 and 44 are formed in the ribs 30 and 40 for inserting the transverse shaft 22.

[0057] With this construction machine bucket 1, the rigidity of the skeletal structure 20 can be firmly ensured by inserting the horizontal shaft 22 through the through holes 34 and 44 and connecting the ribs 30 and 40 to each other.

[0058] (Note 6) In a construction machine bucket 1 according to any of the appendices 1 to 5, The ribs 30 and 40 are composed of a first rib 30 and a second rib 40, and the position where the protrusion 32 is formed on the first rib 30 is different from the position where the protrusion 42 is formed on the second rib 40. Multiple sets of adjacent first ribs 30 and second ribs 40 are provided as multiple vertical structural members.

[0059] With this type of construction machine bucket 1, it is possible to apply stress to the object in a more complex and multi-point manner. Compared to a bucket with a single-shaped rib arrangement, this method effectively grips the object from various angles and enhances the effect of promoting crushing.

[0060] (Note 7) In any of the construction machine buckets 1 described in Appendix 1 to 6, The ribs 30 and 40 are composed of a first rib 30 and a second rib 40, and the position where the protrusion 32 is formed on the first rib 30 is different from the position where the protrusion 42 is formed on the second rib 40. Multiple vertical structural members are arranged such that the first rib 30 and the second rib 40 are arranged alternately.

[0061] With this construction machine bucket 1, multiple protrusions 32 and 42 act on a single large object rolling inside the bucket 1 from different positions and at irregular timings. As a result, the object is subjected to not only impact from a single direction, but also complex multi-angle stresses including twisting and bending, which can further increase crushing efficiency.

[0062] (Note 8) In any of the construction machine buckets 1 described in Appendix 1 to 7, The first rib 30 and the second rib 40 are provided with protrusions 32 and 42, respectively, such that when the first rib 30 and the second rib 40 are superimposed, the protrusions 42 on the second rib 40 are positioned between the multiple protrusions 32 on the first rib 30.

[0063] With this type of construction machine bucket 1, the protrusions 32 and 42 are arranged in a staggered pattern, allowing for more effective capture of the target object through multi-point action and enabling crushing force to be applied from various angles, thereby dramatically improving crushing efficiency.

[0064] (Note 9) In any of the construction machine buckets 1 described in Appendix 1 to 8, At least the ribs 30 and 40 are made of wear-resistant steel plate.

[0065] With this construction machine bucket 1, wear due to contact and friction with hard objects is suppressed, and the shape of the protrusions 32 and 42, which are essential for the crushing function, can be maintained for a long period of time. In addition, by using wear-resistant steel plate, which is a high-strength material, it is possible to reduce the thickness of the ribs 30 and 40, which greatly contributes to the weight reduction of the bucket 1 as a whole, and the pressure exerted by the protrusions 32 and 42 on the object can be increased, further improving the crushing performance.

[0066] (Note 10) In a construction machine bucket 1 according to any of the appendices 1 to 9, The side plate 10 is made of wear-resistant steel plate.

[0067] With this type of construction machine bucket 1, wear and tear on the side plates 10, which come into direct contact with soil and rocks during excavation work, can be effectively suppressed. Furthermore, even if the thickness of the side plates 10 is designed to be thin, sufficient rigidity and strength of the entire bucket can be ensured, thus reducing the overall weight of the bucket 1.

[0068] (Note 11) In a construction machine bucket 1 according to any of the appendices 1 to 10, The wear-resistant steel plate is made from HARDOX® (registered trademark).

[0069] This construction machinery bucket 1 achieves both extremely high hardness and toughness, making it ideal as a component subjected to impact loads. Furthermore, the high hardness keeps the component surface smooth, suppressing the occurrence of mud clumping and allowing excellent mud drainage performance to be maintained over a long period.

[0070] (Note 12) Construction machinery, A construction machine bucket 1, one of those described in Appendix 1 to 11, is attached to the end of the arm.

[0071] With this type of construction machinery, the load on the arm is reduced by making the bucket lighter, allowing for more agile operation and reducing fuel consumption. In addition, by increasing the amount that can be scooped up at once and shortening the work cycle time, overall work efficiency can be dramatically improved. [Explanation of Symbols]

[0072] 1. Bucket for construction machinery 10 Side panels 12 Mounting part 20 Skeletal structure 22 Horizontal axis 30. First Rib 32 Convex part 34 Through holes 40. Second Rib 42 Convex part 44 Through holes 50 Tooth

Claims

1. A construction machine bucket that is attached to the end of the arm of a construction machine, A pair of left and right side panels, A grid-like skeletal structure is provided between each of the aforementioned side plates, Equipped with, The aforementioned skeletal structure includes a plurality of vertical skeletal members and a plurality of horizontal axes for connecting each of the vertical skeletal members, Each of the aforementioned vertical frame members includes a rib with a plurality of protrusions formed on its inner periphery, A construction machine bucket, wherein the protrusions formed on the ribs are wave-shaped.

2. A construction machine bucket that is attached to the tip of the arm of a construction machine, A pair of left and right side panels, A grid-like skeletal structure is provided between each of the aforementioned side plates, Equipped with, The aforementioned skeletal structure includes a plurality of vertical skeletal members and a plurality of horizontal axes for connecting each of the vertical skeletal members, Each of the aforementioned vertical frame members includes a rib with a plurality of protrusions formed on its inner periphery, The rib is composed of a first rib and a second rib, and the position where the protrusion is formed on the first rib is different from the position where the protrusion is formed on the second rib. A construction machine bucket, wherein multiple sets of adjacent first ribs and second ribs are provided as multiple longitudinal structural members.

3. The construction machine bucket according to claim 2, wherein the protrusions are provided on the first rib and the second rib, respectively, such that when the first rib and the second rib are superimposed, the protrusions on the second rib are positioned between the plurality of protrusions on the first rib.

4. A construction machine bucket that is attached to the tip of the arm of a construction machine, A pair of left and right side panels, A grid-like skeletal structure is provided between each of the aforementioned side plates, Equipped with, The aforementioned skeletal structure includes a plurality of vertical skeletal members and a plurality of horizontal axes for connecting each of the vertical skeletal members, Each of the aforementioned vertical frame members includes a rib with a plurality of protrusions formed on its inner periphery, The rib is composed of a first rib and a second rib, and the position where the protrusion is formed on the first rib is different from the position where the protrusion is formed on the second rib. A construction machine bucket, wherein multiple vertical structural members are arranged such that the first ribs and the second ribs are alternately positioned.

5. The construction machine bucket according to claim 4, wherein the protrusions are provided on the first rib and the second rib, respectively, such that when the first rib and the second rib are superimposed, the protrusions on the second rib are positioned between the multiple protrusions on the first rib.

6. A construction machine bucket according to any one of claims 1 to 5, wherein at least the ribs are made of wear-resistant steel plates.

7. A construction machine in which a construction machine bucket according to any one of claims 1 to 5 is attached to the tip of the arm.

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