Bucket wheel and wheel bucket excavator

Abstract

The application provides a wheel bucket excavator and a wheel bucket excavator. The wheel bucket excavator comprises a bucket lip and a bucket tooth. A tooth edge of the bucket tooth is used for excavating materials. An end of the bucket tooth away from the tooth edge is fixedly connected with the bucket lip. The bucket tooth has a first surface, which is a surface facing the materials. An included angle between a projection of a movement direction of the tooth edge on the first surface and the tooth edge is between 85 degrees and 95 degrees. According to the scheme, the bucket tooth is arranged on the bucket lip. The bucket lip drives the bucket tooth to move, so that the tooth edge of the bucket tooth excavates the materials. When the included angle between the projection of the movement direction of the tooth edge on the first surface and the tooth edge is between 85 degrees and 95 degrees, the tooth edge has small eccentric wear, and the tooth edge is not prone to wear and breakage.

Description

Excavator bucket wheels and bucket excavators Technical Field

[0001] This invention relates to the field of bucket wheel excavator technology, and more specifically, to an excavator bucket wheel and a bucket wheel excavator. Background Technology

[0002] During the operation of a bucket wheel excavator, the cutting edges of the bucket teeth wear down as they cut the material. If the teeth wear unevenly, the contact area between the teeth and the material gradually increases during digging, leading to increased resistance and making the teeth more prone to breakage. Therefore, an excavator bucket wheel design is needed that prevents uneven wear of the bucket teeth's cutting edges. Summary of the Invention

[0003] This invention provides a bucket wheel for a bucket excavator and a bucket excavator in general, to solve the problem of uneven wear of the bucket teeth in existing bucket excavators.

[0004] To address the aforementioned problems, according to one aspect of the present invention, an excavator bucket wheel is provided, comprising a bucket lip and bucket teeth, wherein the cutting edge of the bucket teeth is used for digging material, and the end of the bucket teeth away from the cutting edge is fixedly connected to the bucket lip, and the bucket teeth have a first surface, the first surface being the surface facing the material; wherein the angle between the projection of the movement direction of the cutting edge onto the first surface and the cutting edge is between 85° and 95°.

[0005] Furthermore, the angle between the first surface and the normal to the direction of tooth movement is the rake angle, which is between 40° and 50°.

[0006] Furthermore, the bucket tooth has a second surface opposite to the first surface, and the angle between the second surface and the tangent in the direction of tooth movement is the back angle, which is between 10° and 15°.

[0007] Furthermore, the bucket teeth include interconnected cutting sections and connecting sections, with the end of the connecting section away from the cutting section connected to the bucket lip, and the cutting section having cutting edges.

[0008] Furthermore, the length of the bucket teeth is between 380mm and 420mm, the width of the bucket teeth is between 110mm and 150mm, and the thickness of the bucket teeth is between 100mm and 140mm.

[0009] Furthermore, there are multiple bucket teeth, which are arranged along the circumferential edge of the bucket lip, and the multiple bucket teeth dig out materials in sequence.

[0010] Furthermore, the bucket lip includes at least one bent plate having multiple bends to form a ring structure, and bucket teeth are disposed on the bent plate.

[0011] Furthermore, the bending of the bending plate has a positioning angle, which is used to position the direction of movement of the blades of the bucket teeth.

[0012] Furthermore, the bending plate is made of steel, and the bucket teeth are also made of steel.

[0013] According to another aspect of the present invention, a bucket wheel excavator is provided, including a support arm and the excavator bucket wheel described above, one end of the support arm being rotatable about a set axis, and the excavator bucket wheel being rotatably disposed at the other end of the support arm.

[0014] The present invention provides an excavator bucket wheel, comprising a bucket lip and bucket teeth. The cutting edges of the bucket teeth are used for digging material. The end of the bucket teeth away from the cutting edges is fixedly connected to the bucket lip. The bucket teeth have a first surface, which faces the material. The angle between the projection of the cutting edge's movement direction onto the first surface and the cutting edge is between 85° and 95°. With this solution, the bucket teeth are mounted on the bucket lip, and the bucket lip drives the bucket teeth to move, causing the cutting edges of the bucket teeth to dig material. When the angle between the projection of the cutting edge's movement direction onto the first surface and the cutting edge is between 85° and 95°, the uneven wear of the cutting edges is minimal, making it less prone to wear and breakage. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0016] Figure 1 shows a partial structural schematic diagram of an excavator bucket wheel provided in an embodiment of the present invention;

[0017] Figure 2 shows a structural schematic diagram of the excavator bucket wheel in Figure 1 from another angle;

[0018] Figure 3 shows a top view of the excavator bucket wheel in Figure 1;

[0019] Figure 4 shows a side view of the excavator bucket wheel in Figure 1;

[0020] Figure 5 shows a schematic diagram of the structure of the bent steel plate of the excavator bucket wheel in Figure 1;

[0021] Figure 6 shows a schematic diagram of the structure of the bent steel plate 2 of the excavator bucket wheel in Figure 1;

[0022] Figure 7 shows a schematic diagram of the structure of the bent steel plate three of the excavator bucket wheel in Figure 1;

[0023] Figure 8 shows a schematic diagram of the structure of the bucket teeth of the excavator bucket wheel in Figure 1;

[0024] Figure 9 shows a schematic diagram of the structure of a bucket excavator provided in an embodiment of the present invention.

[0025] The above figures include the following reference numerals:

[0026] 110. Verbal sparring;

[0027] 120. Teeth; 121. First surface; 122. Second surface; 123. Edges;

[0028] 131. Front corner; 132. Back corner;

[0029] 13. Bending steel plate one; 14. Bending steel plate two; 15. Bending steel plate three;

[0030] 16. Bending line of steel plate; 17. Adjustment angle of steel plate; 18. Adjustment edge of steel plate; 19. Adjustment angle of steel plate; 20. Inclination angle of steel plate; 21. Inclination angle of steel plate; 22. Adjustment angle of steel plate;

[0031] 23. Adjustment angle one for bent steel plate II; 24. Adjustment edge one for bent steel plate II; 25. Adjustment angle two for bent steel plate II; 26. Adjustment angle three for bent steel plate II; 27. Adjustment edge two for bent steel plate II; 28. Adjustment angle four for bent steel plate II; 29. ​​Adjustment angle five for bent steel plate II; 30. Adjustment edge three for bent steel plate II; 31. Adjustment angle six for bent steel plate II; 32. Inclination angle one for bent steel plate II; 33. Adjustment angle seven for bent steel plate II; 34. Inclination angle two for bent steel plate II; 35. Adjustment angle eight for bent steel plate II; 36. Inclination angle three for bent steel plate II; 37. Adjustment angle nine for bent steel plate II; 38. Bending line one for bent steel plate II; 39. Bending line two for bent steel plate II;

[0032] 40. Adjustment angle one for bending steel plate three; 41. Adjustment edge one for bending steel plate three; 42. Adjustment angle two for bending steel plate three; 43. Adjustment angle three for bending steel plate three; 44. Adjustment edge two for bending steel plate three; 45. Adjustment angle four for bending steel plate three; 46. Inclination angle one for bending steel plate three; 47. Adjustment angle five for bending steel plate three; 48. Inclination angle two for bending steel plate three; 49. Adjustment angle six for bending steel plate three; 50. Bending line one for bending steel plate three; 51. Bending line two for bending steel plate three. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] As shown in Figures 1 to 9, an embodiment of the present invention provides an excavator bucket wheel, including a bucket lip 110 and bucket teeth 120. The cutting edge 123 of the bucket teeth 120 is used for digging materials. The end of the bucket teeth 120 away from the cutting edge 123 is fixedly connected to the bucket lip 110. The bucket teeth 120 have a first surface 121, which is the surface facing the material. The angle between the projection of the movement direction of the cutting edge 123 onto the first surface 121 and the cutting edge 123 is between 85° and 95°.

[0035] In this design, the bucket teeth 120 are mounted on the bucket lip 110. The bucket lip 110 drives the bucket teeth 120 to move, causing the cutting edges 123 of the bucket teeth 120 to dig for material. When the angle between the projection of the cutting edge 123 onto the first surface 121 and the cutting edge 123 is between 85° and 95°, the uneven wear of the cutting edge 123 is minimal, making it less prone to wear and breakage.

[0036] As shown in Figure 1, the angle between the first surface 121 and the normal to the direction of movement of the tooth cutting edge 123 is the rake angle 131, which is between 40° and 50°.

[0037] This setting ensures that the front angle 131 is within the optimal range of 40° to 50°. Within this range, the resistance of the bucket teeth 120 in digging materials is relatively small, thus extending the service life of the bucket teeth 120.

[0038] As shown in Figure 1, the bucket tooth 120 has a second surface 122 opposite to the first surface 121. The angle between the second surface 122 and the tangent in the direction of movement of the tooth blade 123 is the rear angle 132, which is between 10° and 15°.

[0039] This setting ensures that the rear angle 132 is within the optimal range of 10° to 15°, resulting in less resistance to the bucket teeth 120 during digging, making them less prone to breakage and increasing their service life.

[0040] As shown in Figure 1, the bucket tooth 120 includes a cutting section and a connecting section connected to each other. The end of the connecting section away from the cutting section is connected to the bucket lip 110. The cutting section has a toothed edge 123.

[0041] With this configuration, the connecting section is connected to the bucket lip 110, so that the cutting section is fixedly connected to the bucket lip 110. The bucket lip 110 drives the bucket teeth 120 to move, so that the tooth blades 123 cut and excavate materials.

[0042] In one specific embodiment of the present invention, the length of the bucket teeth 120 is between 380mm and 420mm, the width of the bucket teeth 120 is between 110mm and 150mm, and the thickness of the bucket teeth 120 is between 100mm and 140mm. This configuration makes the dimensions of the bucket teeth 120 suitable for cutting materials and more suitable for connection with the bucket lip 110.

[0043] As shown in Figure 3, there are multiple bucket teeth 120, which are arranged along the circumferential edge of the bucket lip 110, and the multiple bucket teeth 120 dig materials in sequence.

[0044] With this configuration, multiple bucket teeth 120 are arranged along the circumferential edge of the bucket lip 110, so that the multiple bucket teeth 120 cut and excavate the material in sequence as the bucket lip 110 moves, and excavate the material efficiently and quickly.

[0045] As shown in Figure 3, the bucket lip 110 includes at least one bending plate with multiple bends to form a ring structure, and the bucket teeth 120 are disposed on the bending plate.

[0046] With this configuration, at least one bending plate is bent to form a ring structure, so that the angle of the tooth 120 changes with the angle of the bending plate, ensuring that the angle between the projection of the tooth 123 on the first surface 121 and the tooth 123 is between 85° and 95°.

[0047] As shown in Figures 5 to 7, the bending of the bending plate has a positioning angle, which is used to position the movement direction of the cutting edge 123 of the bucket tooth 120.

[0048] With this configuration, the bending of the bending plate has a positioning angle. The change in the positioning angle causes the direction of the blade 123 of the bucket tooth 120 to change as well, so that the angle between the projection of the blade 123 onto the first surface 121 and the blade 123 is between 85° and 95°.

[0049] Furthermore, both the bending plate and the bucket teeth 120 are made of steel. The fact that both the bending plate and the bucket teeth 120 are made of steel improves their wear resistance and allows them to withstand greater resistance during excavation.

[0050] According to another aspect of the present invention, a bucket wheel excavator is provided, including a support arm and the excavator bucket wheel described above, one end of the support arm being rotatable about a set axis, and the excavator bucket wheel being rotatably disposed at the other end of the support arm.

[0051] With this configuration, the support arm rotates around a set axis, and the excavator bucket wheel rotates at the other end of the support arm, causing the excavator bucket wheel to dig forward in a spiral direction.

[0052] In one specific embodiment of the present invention, as shown in Figures 3 to 9, the length of the support arm is L, and ω n The angular velocity is horizontally clockwise; the radius of the excavator bucket wheel is r, and it rotates with ω. s The angular velocity rotates clockwise; the angle between the line connecting one bucket tooth 120 and the center of the excavator bucket wheel and the support arm is θ.

[0053] Thus, we obtain the speed V generated by the bucket tooth 120 due to the rotation of the excavator bucket wheel. s For V s =r·ω s The direction is tangential to the bucket wheel at position 120. The speed V generated by the clockwise horizontal rotation of the support arm on bucket tooth 120 is... n For V n =(L+r·cosθ)ω n The direction is the tangent direction of a circle with the distance from the tooth edge position to the rotation center of the support arm as the radius and the rotation center of the support arm as the center at the position of the bucket tooth.

[0054] The speed V of the bucket tooth 120 is the speed V generated by the rotation of the excavator bucket wheel. s The speed V generated by the horizontal clockwise rotation of the support arm of the bucket tooth 120 n As shown in Figure 8, the angle λ between the velocity V and the horizontal direction is λ = arctan(V). s / V n The adjustment angle γ of the bucket teeth is γ = λ - β.

[0055] Then, based on the adjustment angle γ of the bucket tooth 120, the length of each side and the position of the bending line of the corresponding bucket lip are calculated, so as to ensure that the front angle 131 and rear angle 132 of each bucket tooth 120 are within the optimal range. After the direction of the bucket tooth speed V is determined, the angle of the bucket tooth 120 is adjusted so that the angle between the projection of the movement direction of the tooth blade 123 on the first surface 121 and the tooth blade 123 is between 85° and 95°.

[0056] As shown in Figures 3 to 7, the bucket lip 110 is composed of three bent plates: bent steel plate one 13, bent steel plate two 14, and bent steel plate three 15. Bent steel plate one 13 has a bending line 16, an adjustment angle one 17, an adjustment edge 18, an adjustment angle two 19, an inclination angle one 20, an inclination angle two 21, and an adjustment angle three 22. By adjusting the bending line, adjustment angle, adjustment edge, and inclination angle on bent steel plate one 13, the bucket teeth 120 on bent steel plate one 13 can be installed at a suitable angle, so that the angle between the projection of the movement direction of the tooth blade 123 onto the first surface 121 and the tooth blade 123 is between 85° and 95°.

[0057] The bent steel plate 2 has the following adjustment angles: 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, and 35. Adjusting angle 8 35, bending angle 3 36, bending angle 9 37, bending line 1 38, and bending line 2 39 on bending steel plate 2, by adjusting the bending line, adjustment angle, adjustment edge, and bending angle on bending steel plate 2 14, the bucket teeth 120 on bending steel plate 2 14 can be installed at a suitable angle, so that the angle between the projection of the movement direction of the tooth blade 123 on the first surface 121 and the tooth blade 123 is between 85° and 95°.

[0058] The bent steel plate 15 has three adjustment angles: 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, and 51°. By adjusting the bending line, adjustment angle, adjustment edge, and inclination angle on the bent steel plate 15, the bucket teeth 120 on the bent steel plate 15 can be installed at a suitable angle, so that the angle between the projection of the tooth blade 123 on the first surface 121 and the tooth blade 123 is between 85° and 95°.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0062] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0063] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0064] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

Claims

1. A bucket wheel for an excavator, characterized in that, include: The bucket has a lip (110) and a tooth (120). The tooth (123) of the tooth (120) is used to dig materials. The end of the tooth (120) away from the tooth (123) is fixedly connected to the lip (110). The tooth (120) has a first surface (121) which is the surface facing the material. The angle between the projection of the movement direction of the tooth (123) onto the first surface (121) and the tooth (123) is between 85° and 95°. The angle between the first surface (121) and the normal of the movement direction of the tooth (123) is the rake angle (131), which is between 40° and 50°.

2. The excavator bucket wheel according to claim 1, characterized in that, The bucket tooth (120) has a second surface (122) opposite to the first surface (121), and the angle between the second surface (122) and the tangent in the direction of movement of the tooth edge (123) is the back angle (132), which is between 10° and 15°.

3. The excavator bucket wheel according to claim 1, characterized in that, The bucket tooth (120) includes a cutting section and a connecting section connected to each other. The end of the connecting section away from the cutting section is connected to the bucket lip (110). The cutting section has the cutting edge (123).

4. The excavator bucket wheel according to claim 1, characterized in that, The length of the bucket tooth (120) is between 380mm and 420mm, the width of the bucket tooth (120) is between 110mm and 150mm, and the thickness of the bucket tooth (120) is between 100mm and 140mm.

5. The excavator bucket wheel according to claim 1, characterized in that, There are multiple bucket teeth (120), which are arranged along the circumferential edge of the bucket lip (110) and dig materials in sequence.

6. The excavator bucket wheel according to claim 1, characterized in that, The bucket lip (110) includes at least one bent plate having multiple bends to form a ring structure, and the bucket teeth (120) are disposed on the bent plate.

7. The excavator bucket wheel according to claim 6, characterized in that, The bending of the bending plate has a positioning angle, which is used to position the movement direction of the cutting edge (123) of the bucket tooth (120).

8. The excavator bucket wheel according to claim 6, characterized in that, The bending plate is made of steel, and the bucket teeth (120) are made of steel.

9. A bucket wheel excavator, characterized in that, It includes a support arm and an excavator bucket wheel as described in any one of claims 1 to 8, wherein one end of the support arm is rotatable about a set axis, and the excavator bucket wheel is rotatably disposed at the other end of the support arm.

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