Bucket and excavator having the same

Abstract

The present invention provides a bucket and an excavator having the bucket, the bucket comprising a bucket body and a plurality of shovel teeth fixed on the bottom edge of the shovel mouth of the bucket body, the plurality of shovel teeth being fixedly arranged in sequence along the bottom edge at intervals; along the width direction of the bucket body, the bottom edge has a plurality of spaced-apart concave valleys to set the corresponding shovel teeth; the tooth tails of the shovel teeth are provided with adapting grooves, the upper and lower groove walls of the adapting grooves are respectively adapted to the upper and lower surfaces of the bottom edge at the valley area. The application of this solution can effectively solve the problem that the existing bucket cannot effectively take into account the high bearing strength and deadweight of the bucket. By optimizing the fixed adapting structure of the shovel teeth, the geometric shape of the bucket is changed, thereby weakening the demanding requirements on the mechanical properties of the material, thereby effectively reducing the selection of high-cost materials; this solution can ensure the reliability and safety of the comprehensive use performance with low material costs and manufacturing costs, and has the operability of convenient repair.

Description

Technical Field

[0001] The present invention relates to the technical field of excavating machinery, and in particular to a bucket and an excavator having the bucket. Background Art

[0002] As is known to all, in the whole process of excavator working, the bucket plays a key role of "gripper", and its main structure includes the bucket body 10 and the shovel teeth 20 arranged at intervals along the bottom edge 101 of the shovel mouth of the body. Figure 1 , which shows a schematic diagram of the assembly relationship of a typical bucket in the prior art. In the bottom edge 101 area where the shovel teeth 20 are installed, a thickened wear-resistant carbon steel plate is usually welded to the bucket body 10 to transition the difference in mechanical properties between the bucket body 10 and the shovel teeth 20 and ensure the wear resistance of the front end of the bucket.

[0003] When in use, the shovel teeth and the bucket body are subjected to extrusion, impact load C, bending moment load M (or reverse direction M') and surface friction (not shown in the figure). Figure 2 and Figure 3 , Figure 2 It is a schematic diagram of the bucket's stress state. Figure 3 It is a local schematic diagram of the stress state of a single shovel tooth.

[0004] The load stress distribution of the shovel teeth on the front end structure of the bucket is shown in the figure below: Figure 4 and Figure 5 As shown; it can be understood that the bending moment in the M direction of the two-way bending moment (M and M') is the main bending moment in practical applications, so this article only expresses the bending moment in the M direction to briefly and clearly show the stress analysis relationship. Figure 4 In the AA section shown, the bending moment exerts equal positive stress on each section of the bucket front structure through the shovel teeth, and is the same as the shear stress at the shovel tooth edge. Figure 5 As shown in the BB section, the stress distribution of the bending moment acting on the front end structure of the bucket through the shovel teeth is as follows: the positive stress acting on the upper side decreases as the lever arm is extended, and the positive stress acting on the lower side increases as the lever arm is extended; at the same time, the shear stress of the shovel tooth edge on the front end structure of the bucket changes in the same way as the positive stress as the lever arm is extended.

[0005] For relatively harsh working conditions, most existing buckets are protected by high-strength materials and / or increased structural dimensions. Usually, the teeth on the bucket are cast from high-strength, high-wear-resistant special alloy steel materials with a material cost of more than 10,000 yuan per ton, such as ZG30CrNi2MO, ZG35CrMO or 35CrMn6Mo. At the same time, the thickened wear-resistant carbon steel plate for the teeth at the front end of the bucket body costs about 5,000 yuan / ton, such as wear-resistant carbon steel such as NM400;; Given that its mechanical properties are between the teeth and the main material (such as Q345b structural steel), in order to ensure the welding processability with the main material of the bucket body and to make up for its insufficient ability to transfer the teeth load, it is necessary to significantly increase the material thickness of this area to 1 to 2 times that of the main material of the bucket body (such as Q345b structural steel), which is costly.

[0006] In addition, the current bucket body is cut from steel plates of equal thickness and bent into individual parts, which are then welded together to form an integrated unit. Due to the limitations of its own structure, the bucket body has a lot of mass redundancy and the product weight is heavy.

[0007] In view of this, it is urgent to optimize the structure of the existing excavator bucket to overcome the above-mentioned technical defects. Summary of the invention

[0008] In view of the above-mentioned defects, the technical problem solved by the present invention is to provide a bucket and an excavator having the bucket, so as to solve the problem that the existing bucket cannot effectively take into account both the load-bearing strength and the high deadweight of the bucket.

[0009] The bucket provided by the present invention includes a bucket body and a plurality of shovel teeth fixed on the bottom edge of the shovel mouth of the bucket body, wherein the plurality of shovel teeth are fixedly arranged in sequence along the bottom edge at intervals; along the width direction of the bucket body, the bottom edge has a plurality of spaced-apart concave valleys to set the corresponding shovel teeth; an adapting groove is provided at the tooth tail of the shovel teeth, and the upper and lower groove walls of the adapting groove are respectively adapted to the upper and lower surfaces of the bottom edge in the valley area.

[0010] Preferably, the bottom edge between two adjacent valley portions is configured as an upper convex peak portion.

[0011] Preferably, the bottom edge between two adjacent valley portions is configured as a flat plate portion.

[0012] Preferably, along the depth direction of the bucket body, the cross-section of the valley portion and the concave space thereof is configured to change in a gradually decreasing trend.

[0013] Preferably, the matching surfaces of the upper groove wall and the lower groove wall and the bottom edge both change in a gradually decreasing trend, the lower groove wall and the body of the shovel tooth are split structures, and the matching front end face of the lower groove wall and the rear end face of the body of the shovel tooth, one of them has a slot and the other has an insert block; the rear end of the upper groove wall extends to form a positioning column, and the upper surface of the bucket body on the rear side of the bottom edge is formed with a positioning hole that matches the corresponding positioning column, and the upper groove wall, the bottom edge and the lower groove wall are fixed by threaded fasteners or pins.

[0014] Preferably, along the depth direction of the bucket body, the cross-section of the concave space of the valley is configured to change in a gradually decreasing trend, the cross-section of the area near the shovel mouth side of the valley that is adapted to the lower groove wall is configured to change in a gradually increasing trend, and the bottom outer contour of the area near the shovel mouth side is configured to be consistent along the depth direction.

[0015] Preferably, the upper groove wall and the lower groove wall are consistent with the matching surface of the bottom edge, and the body of the shovel tooth is an integrated structure with the upper groove wall and the lower groove wall; a positioning column is formed by extending from the rear end of the upper groove wall, and a positioning hole matching the corresponding positioning column is formed on the upper surface of the bucket body on the rear side of the bottom edge, and threaded fasteners or pins are used to fix the upper groove wall, the bottom edge and the lower groove wall.

[0016] Preferably, along the depth direction of the bucket body, the cross-sections of the valley portion and the concave space thereof are configured with equal cross-sections.

[0017] Preferably, the cross-sections of the valley and the peak are both arc-shaped; the upper groove wall of the tooth tail has side wings extending to both sides, and the side wings are in contact with the upper surface of the peak on the corresponding side; the bucket body and the shovel teeth are processed by metal liquid forming technology.

[0018] The present invention also provides an excavator, comprising the above-mentioned bucket.

[0019] In view of the existing excavator buckets, this solution innovatively proposes an optimized assembly structure of the shovel teeth and the bucket body. This solution has multiple spaced concave valleys at the bottom edge of the bucket mouth for setting the shovel teeth. Correspondingly, the tooth tail of the shovel teeth is provided with an adaption groove, and the upper and lower groove walls of the adaption groove are respectively adapted to the upper and lower surfaces of the bottom edge at the valley area. During use, the bending moment formed by the load causes the positive stress formed by the shovel teeth on the concave cross section of the bottom edge area of ​​the bucket mouth that is adapted thereto and the shear stress formed on the edge to produce a partial stress along the tangent direction. The partial stress distribution changes from both sides to the center of the concave valley, and the positive stress perpendicular to the material thickness direction decreases accordingly until the shear stress at the assembly edge of the front end of the bucket is the smallest, which weakens the possibility of shear damage (including tearing) of the front end of the bucket by the shovel teeth. With such arrangement, the present solution constructs a change in the bucket geometry by optimizing the fixed adaptation structure of the shovel teeth, thereby weakening the demanding requirements on the mechanical properties of the material, thereby effectively reducing the selection of high-cost materials and avoiding the defect of ensuring the bucket load-bearing capacity through component size leading to product quality redundancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the assembly relationship of a typical bucket in the prior art;

[0022] Figure 2 The schematic diagram of the bucket's stress state;

[0023] Figure 3 It is a local schematic diagram of the stress state of a single shovel tooth;

[0024] Figure 4 for Figure 3 AA section diagram of ;

[0025] Figure 5 for Figure 3 Schematic diagram of BB section;

[0026] Figure 6 is a schematic diagram of the bucket described in the first embodiment;

[0027] Figure 7 for Figure 6 The structural schematic diagram of the shovel teeth shown in;

[0028] Figure 8A schematic diagram of the force state analysis of the shovel teeth adapted to the arc-shaped valley is shown;

[0029] Fig. 9 The figure shows the strain trend diagram of the bottom edge area of ​​the bucket due to the force;

[0030] Fig.10 for Figure 6 C-direction view;

[0031] Fig.11 for Figure 6 D-direction view;

[0032] Fig.12 for Figure 7 The schematic diagram of the structure formed by longitudinal sectioning of the shovel teeth shown;

[0033] Fig.13 for Fig.12 A side profile of

[0034] Fig.14 is a schematic diagram of the bucket described in the second embodiment;

[0035] Fig.15 for Fig.14 The structural schematic diagram of the shovel teeth shown in;

[0036] Fig.16 for Fig.14 EE cross-sectional view;

[0037] Fig.17 for Fig.14 F-direction view;

[0038] Fig.18 for Fig.14 G-direction view;

[0039] Fig.19 for Fig.15 H-direction view;

[0040] Fig. 20 is a schematic diagram of the bucket described in the third embodiment;

[0041] Fig.21 for Fig. 20 The structural schematic diagram of the shovel teeth shown in;

[0042] Fig. 22 for Fig. 20 II sectional view;

[0043] Fig.23 for Fig. 22 J-direction view;

[0044] Fig.24 for Fig. 22 K-direction view;

[0045] Fig.25 for Fig.21 The schematic diagram of the structure formed by longitudinal sectioning of the shovel teeth shown;

[0046] Fig.26 It is a schematic diagram of the overall structure of the bucket body described in the fourth embodiment.

[0047] Figure 6-Figure 26 middle:

[0048] Bucket body 1, bottom edge 11, valley 111, peak 112, positioning hole 113, shovel mouth side area 114, flat plate 115, reinforcing rib 1151, shovel tooth 2, adapter groove 21, upper groove wall 211, positioning column 2111, side wing 2112, lower groove wall 212, positioning column 2121, plug block 2122, slot 22, threaded fastener 3. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The core of the embodiment of the present invention is to provide a bucket structure with optimized tooth assembly geometry, thereby weakening the demanding requirements for material mechanical properties, thereby effectively reducing the requirements for high-cost materials and structural dimensions. Without loss of generality, this embodiment uses the bucket body shown in the figure as the description basis to describe the tooth assembly structure in detail; it should be understood that the size and contour of the bucket body and other self-shape are not the core invention of this application, and do not constitute a substantial limitation on the technical solution requested for protection in this application.

[0051] Embodiment 1:

[0052] See also Figure 6 , which shows a schematic diagram of the overall structure of the bucket described in this embodiment.

[0053] The bucket includes a bucket body 1 for accommodating materials to be processed, and a plurality of shovel teeth 2 are fixedly arranged at a bottom edge 11 of a shovel opening of the bucket body 1. Specifically, the plurality of shovel teeth 2 are fixedly arranged at intervals in sequence along the bottom edge 11. Here, the number and spacing of the shovel teeth 2 can be designed according to the overall performance parameters of the actual bucket.

[0054] like Figure 6 As shown, along the width direction of the bucket body 1, the bottom edge 11 has a plurality of spaced lower concave valleys 111 for assembling and setting corresponding shovel teeth 2; Figure 7, the figure is Figure 2 As shown in the structural schematic diagram of the shovel tooth, an adapting groove 21 is opened at the tooth tail of the shovel tooth 2, and the upper groove wall 211 and the lower groove wall 212 of the adapting groove are respectively adapted to the upper and lower surfaces of the bottom edge 11 at the valley 111 area.

[0055] In actual use, the bending moment M formed by the load causes the normal stress formed by the shovel teeth on the concave section of the bottom edge of the bucket shovel mouth that matches it, and the shear stress formed on the edge to generate a stress component a1 along the tangent direction. Taking the arc-shaped valley 111 as a preferred example, the distribution of the stress component a1 increases from both sides to the center of the concave valley, and the normal stress a2 perpendicular to the material thickness direction decreases accordingly, while the shear stress at the assembly edge of the front end of the bucket is the smallest, which weakens the possibility of shear damage (including tearing) of the front end of the bucket by the shovel teeth. Please refer to Figure 8 , which shows a schematic diagram of the force state analysis of the shovel teeth adapted to the arc-shaped valley. This solution optimizes the fixed adaptation structure of the shovel teeth to construct a change in the geometric shape of the bucket, thereby weakening the demanding requirements on the mechanical properties of the material, thereby effectively reducing the selection of high-cost materials and avoiding the defect of product quality redundancy caused by ensuring the bucket load-bearing capacity through component size.

[0056] As a preferred example, in this solution, the bottom edge 11 between two adjacent valleys 111 is configured as an upper convex peak 112. The positive stress generated by the above-mentioned shovel tooth bending moment M not only forms Figure 8 The normal stress shown also forms a Fig. 9 The strain trend of the sinking bending is shown in Fig. 9 The diagram of the strain trend of the bottom edge area under stress is shown. Based on the constraints of the two ends of the bottom edge 11, the middle area is bent downward, and accordingly, the valley 111 and the peak 112 are deformed by the strain to further improve the ability to resist the shear damage of the shovel teeth to the bottom edge of the front end of the bucket.

[0057] The geometric shape of the bottom edge 11 has no stress concentration area between adjacent structures, and compression and stretching compensate each other, ensuring a wide range of continuous strain and smooth stress distribution of the structure; at the same time, this ability to continuously distribute stress under strain provides better adaptability for the bucket to withstand dynamic loads when vector changes and the loads of each shovel tooth are not synchronized (i.e., when excavation work starts, from only one shovel tooth to all shovel teeth carrying the load at the same time), making up for the lack of mechanical properties of materials using traditional structural steel (such as Q345b structural steel). In other words, it weakens the demanding requirements for material mechanical properties.

[0058] In this solution, along the depth direction of the bucket body 1, the cross-section of each valley 111 and its concave space is configured to change in a gradually decreasing trend, that is, gradually decreases from front to back, so as to obtain a better stress state. Figure 6 , Fig.10 and Fig.11 As shown, Fig.10 for Figure 6 C-direction view, Fig.11 for Figure 6 D-direction view.

[0059] As shown in the figure, the matching surfaces of the upper groove wall 211 and the lower groove wall 212 with the bottom edge 11 are gradually decreasing. For the convenience of assembly, the lower groove wall 212 of this solution and the body of the shovel tooth 2 are split structures, please refer to Fig.12 and Fig.13 , Fig.12 for Figure 7 The schematic diagram of the structure formed by longitudinal sectioning of the shovel teeth is shown in FIG. Fig.13 for Fig.12 Side cross-sectional view of .

[0060] Among them, the front end face of the lower groove wall 212 has an insert block 2122, and the rear end face of the body of the shovel tooth 2 has a slot 22, thereby forming the assembly positioning of the lower groove wall 212 and the body of the shovel tooth 2. It can be understood that the front end face of the lower groove wall 212 and the rear end face of the body of the shovel tooth 2 are matched, and the slot and the insert block are also arranged in reverse, that is, the slot is opened on the front end face of the lower groove wall 212, and the insert block is arranged on the body of the shovel tooth 2, which can also achieve the functional role of assembly positioning.

[0061] During assembly, after the upper groove wall 211 of the shovel tooth 2 is inserted into place along the valley 111 of the bottom edge 11, the lower groove portion 212 is snapped in place and the insert block 2122 on it is inserted into the main body slot 22 of the shovel tooth 2; at the same time, threaded fasteners are used to fix the upper groove wall 211, the bottom edge and the lower groove wall 212 to further fix them and avoid deflection during load-bearing.

[0062] Furthermore, a positioning column 2111 is extended from the rear end of the upper groove wall 211, and correspondingly, a positioning hole 113 adapted to the corresponding positioning column 2111 is formed on the upper surface of the bucket body 1 on the rear side of the bottom edge 11. After insertion, the positioning column 2111 of each shovel tooth 2 is inserted into the corresponding positioning hole 113, and the matching surface with decreasing cross-section forms a good basic positioning.

[0063] In addition, the upper groove wall 211 of the tooth tail has side wings 2112 extending to both sides. Figure 7As shown, the side wing 2112 is fitted with the upper surface of the corresponding side peak portion 112 to cover the upper surface of the peak portion 112, thereby avoiding working wear at the corresponding position of the top of the peak portion 112 and enhancing the load resistance of the shovel teeth. Further, the lower groove wall 212 may also have side wings 2122 extending to both sides, and the side wings 2122 are matched with the lower surface of the corresponding side peak portion 112 to avoid working wear at the corresponding position of the bottom of the peak portion 112.

[0064] Specifically, the bucket body 1 and the shovel teeth 2 can be processed by casting technology respectively, wherein the thickness of the bottom edge 11 area is reduced by about 30% to 50% compared with the original thickness when NM400 is used, changing the original state of great disparity in thickness between the bucket body material and the bucket body 1. The bucket using ordinary structural steel (such as Q345b) also has good bearing capacity. Among them, the shovel teeth 2 can be cast by low-cost austempered ductile iron with a surface hardness of about HRC50 and a yield strength of 600 to 700Mpa (its material price is only one-fifth of ZG30CrNi2Mo, ZG35CrMo, 35CrMn6Mo materials), which can ensure that the shovel teeth have the feeding ability to dig the target material.

[0065] In particular, due to the characteristics of casting technology, the geometric shape of the corrugated skirt (including the connection between arc and straight line), whether the peak, trough arc height, chord length or curvature, curvature radius of equal section or gradient section can be widely selected according to different usage requirements. Of course, the bucket described in this solution can also be formed by 3D printing.

[0066] It should be noted that the structural part forming the positioning hole 113 is also another lever arm fulcrum for resisting bending load, which is more conducive to the shovel tooth 2 to apply the bending load it bears to the front end area of ​​the bucket with a large strain and stress distribution range and strong capacity.

[0067] Embodiment 2:

[0068] See also Fig.14 and Fig.15 ,in, Fig.14 is a schematic diagram of the bucket described in this embodiment, Fig.15 for Fig.14 In order to clearly show the difference and connection between this solution and the first embodiment, the same functional components and structures are marked with the same symbols in the figure.

[0069] Compared with the bucket of the first embodiment, the difference of this solution is that: along the depth direction of the bucket body, the cross section of the concave space of the valley 111 is configured to change in a gradually decreasing trend, the cross section of the near-shovel-mouth side area 114 of the valley 111 adapted to the lower groove wall 212 is configured to change in a gradually increasing trend, and the bottom outer contour of the near-shovel-mouth side area 114 is configured to be consistent along the depth direction. Please refer to Fig.16 , Fig.17 , Fig.18 and Fig.19 ,in, Fig.16 for Fig.14 EE cross-sectional view, Fig.17 for Fig.14 F-direction view, Fig.18 for Fig.14 G-direction view, Fig.19 for Fig.15 H-direction view.

[0070] As shown in the figure, the body of the shovel tooth 2 is an integrated structure with the upper groove wall 211 and the lower groove wall 212. That is to say, along the depth direction of the bucket body 1, the bottom contour of the cross section of the valley 111 is of equal height. Here, "equal height" means that the height direction dimensions of the cross section of the valley 111 with decreasing cross section are the same. Among them, the matching surface of the upper groove wall 211 and the bottom edge 11 is a cross section with a gradually decreasing trend, that is, it is the same as the shape of the upper surface of the valley 111; among them, the matching surface of the lower groove wall 212 and the bottom edge 11 are both of equal cross section, and the generatrix at the lowest position is on the same line as the generatrix of the outer contour of the valley 111, so as to facilitate the rapid insertion of the shovel tooth 2.

[0071] After the basic assembly is completed, the fixing method between the shovel tooth 2 and the bottom edge 11 can be selected according to the needs, such as but not limited to the structure shown in the figure. As a preference, the size of the shovel tooth groove wall and the valley adaptation interval of the present solution is easy to coordinate and control.

[0072] The other structures and connection relationships are the same as those in the first embodiment and will not be described in detail here.

[0073] Embodiment three:

[0074] See also Fig. 20 and Fig.21 ,in, Fig. 20 is a schematic diagram of the bucket described in this embodiment, Fig.21 for Fig. 20 In order to clearly show the difference and connection between this solution and the first and second embodiments, the same functional components and structures are marked with the same symbols in the figure.

[0075] Compared with the second embodiment, the present solution is different in that the bottom edge between two adjacent valleys 111 on the bottom edge 11 of the bucket is configured as a flat plate 115. Fig. 22 , Fig.23 , Fig.24 and Fig.25 ,in, Fig. 22 for Fig. 20 II sectional view, Fig.23 for Fig. 22 J-direction view, Fig.24 for Fig. 22 K-direction view, Fig.25 for Fig.21 The schematic diagram of the structure formed by longitudinal sectioning of the shovel teeth shown.

[0076] In this solution, the body of the shovel tooth 2 is also an integrated structure with the upper groove wall 211 and the lower groove wall 212. The cross section of the concave space of the valley 111 is configured to change in a gradually decreasing trend. The cross section of the near-shovel-mouth side area 114 of the valley 111 adapted to the lower groove wall 212 is configured to change in a gradually increasing trend, and the bottom outer contour of the near-shovel-mouth side area 114 is configured to be a uniform cross section. In order to obtain good bearing strength, the middle position of the flat plate 115 can also be configured with a reinforcing rib 1151 extending in the bucket depth direction.

[0077] Similarly, the upper and lower groove walls of the tooth tail may also have side wings (not shown in the figure) extending to both sides, and respectively fit with the upper and lower surfaces of the corresponding flat plate portion 115 to cover the flat plate portion 115 to prevent working wear at the corresponding positions. Of course, the side wings should also be adapted to the flat plate portion 115 to be flat.

[0078] The other structures and connection relationships are the same as those of the first and second embodiments and will not be described in detail here.

[0079] Embodiment 4:

[0080] See also Fig.26 , which shows a schematic diagram of the overall structure of the bucket body of this embodiment. In order to clearly show the difference and connection between this solution and embodiments 1, 2 and 3, the same functional components and structures in the figure are marked with the same symbols.

[0081] In the first three embodiments, the cross section of each valley 111 on the bottom edge 11 is configured to change in a gradually decreasing trend along the depth direction of the bucket body. The difference of this solution is that the cross section of the valley is a uniform cross section along the depth direction of the bucket body.

[0082] In this solution, along the depth direction of the bucket body 1, the cross section of the valley 111 is configured with equal cross sections and the outer contour of the cross section of the lower surface of the valley that constitutes the thickness of the valley is also of the same size and geometric shape. When used, it can also present a technical effect based on geometric optimization and weakening the demanding requirements on the mechanical properties of the material.

[0083] The other structures and connection relationships are the same as those in the above-mentioned embodiment and will not be described in detail here.

[0084] In addition to the aforementioned bucket, this embodiment also provides an excavator using the aforementioned bucket. It should be understood that other functions of the excavator are not the core invention of this application, and can be implemented by ordinary technicians in this field based on existing technologies, so they will not be described in detail herein.

[0085] It should be noted that the terms "comprises", "includes" or any other variations thereof used in this document are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0086] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bucket, comprising a bucket body and a plurality of shovel teeth fixed on the bottom edge of the shovel mouth of the bucket body, wherein the plurality of shovel teeth are fixedly arranged in sequence along the bottom edge; characterized in that: Along the width direction of the bucket body, the bottom edge has a plurality of spaced concave valleys for setting the corresponding shovel teeth, and along the depth direction of the bucket body, the cross-section of the valleys and the concave spaces thereof is configured to change in a gradually decreasing trend; The tooth tail of the shovel tooth is provided with an adapting groove, and the upper and lower groove walls of the adapting groove are respectively adapted to the upper and lower surfaces of the bottom edge at the valley area; The matching surfaces of the upper groove wall and the lower groove wall with the bottom edge both change in a gradually decreasing trend. The lower groove wall and the body of the shovel tooth are split structures. The matching front end face of the lower groove wall and the rear end face of the body of the shovel tooth, one of them has a slot and the other has an insert block; the rear end of the upper groove wall extends to form a positioning column, and the upper surface of the bucket body on the rear side of the bottom edge is formed with a positioning hole matching the corresponding positioning column, and the upper groove wall, the bottom edge and the lower groove wall are fixed by threaded fasteners or pins.

2. The bucket according to claim 1, characterized in that: The bottom edge between two adjacent valley portions is configured as an upper convex peak portion.

3. The bucket according to claim 1, characterized in that: The bottom edge between two adjacent valley portions is configured as a flat plate portion.

4. The bucket according to claim 2, characterized in that: The cross-sections of the valley and the peak are both arc-shaped; the upper groove wall of the tooth tail has side wings extending to both sides, and the side wings are in contact with the upper surface of the peak on the corresponding side; the bucket body and the shovel teeth are processed by metal liquid forming technology.

5. An excavator, comprising a bucket, characterized in that: The bucket is the bucket according to any one of claims 1 to 4.

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