Grader swing ring device, working method thereof, and grader

Abstract

This invention belongs to the field of grader technology, specifically relating to a grader slewing device and its working method, as well as the grader itself. The grader slewing device includes a slewing ring and two box-shaped structures. Each box-shaped structure is connected to the side wall of the slewing ring via an independent connecting plate assembly. The side wall of the slewing ring has a downwardly extending protrusion, and the two box-shaped structures are symmetrically arranged on both sides of the protrusion. The two sides of the curved plate in the connecting plate assembly are respectively connected to the triangular area formed by the box-shaped structure and the slewing ring. The side of the curved plate connected to the slewing ring has a dovetail portion connected to the protrusion. This grader slewing device uses a curved plate with a dovetail portion, and the dovetail portion extends into the protrusion of the slewing ring for connection, thereby improving the bending and torsional resistance of the curved plate. Simultaneously, the presence of the dovetail portion allows a concave buffer arc area to be formed on the curved plate.

Description

Technical Field

[0001] This invention belongs to the field of grader technology, specifically relating to graders with scrapers, and more particularly to a grader rotary device and its working method, as well as the grader itself. Background Technology

[0002] A grader is a high-speed, high-efficiency, high-precision, and multi-purpose earthmoving and mining machine.

[0003] As the main load-bearing component, the slewing ring of a grader is subjected to significant impact, bending moment, and torque during heavy-duty operation. Currently, the bending and torsional resistance of the slewing ring used in graders is mainly borne by the box-shaped structures on the left and right sides of the slewing ring. For example, a grader slewing ring mechanism and grader with publication number "CN111305294B" strengthens the bending and torsional resistance of the box-shaped structure by adopting a multi-layer structure.

[0004] However, in actual use, when the box-shaped structure is subjected to force, some of the force will act on the connecting plate assembly between the box-shaped structure and the rotating ring, causing the arc plate in the connecting plate assembly to break.

[0005] Therefore, how to solve the above problems is a problem that urgently needs to be solved by those skilled in the art.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0007] This disclosure provides at least one grader rotary device and its working method, as well as a grader.

[0008] In a first aspect, embodiments of this disclosure provide a grader slewing device, comprising: a slewing ring and two box-shaped structures, each of the box-shaped structures being connected to the side wall of the slewing ring via an independent connecting plate assembly, the side wall of the slewing ring having a downwardly extending protrusion, and the two box-shaped structures being symmetrically arranged on both sides of the protrusion; the two sides of the curved plate in the connecting plate assembly being connected to the triangular area formed by the box-shaped structure and the slewing ring respectively; wherein, the side of the curved plate connected to the slewing ring has a dovetail portion connected to the protrusion.

[0009] In one alternative embodiment, the side of the arc plate connected to the rotating ring has a dovetail portion connected to the protrusion, and a concave buffer arc area is formed on the arc plate.

[0010] In one alternative embodiment, the top view of the curved plate is approximately "triangular"; wherein the curved plate has a first side, a second side, and a third side; the first side is connected to the rotating ring, the second side is connected to the box-shaped structure, the dovetail is located at the junction of the first side and the third side, and the buffer curved area is located on the third side.

[0011] In one alternative embodiment, the box-shaped structure is J-shaped; wherein the box-shaped structure has a curved portion; and the second side of the curved plate is connected to the curved portion of the box-shaped structure.

[0012] In one optional embodiment, the bending angle α of the arc plate is in the range of 90° to 100°.

[0013] In one alternative embodiment, the curved plate has a bend; wherein the dovetail portion is located in the middle of the bend.

[0014] In one optional embodiment, the connecting plate assembly further includes: a wedge block and a connecting plate; wherein the wedge block is connected to the box-shaped structure and the rotating ring, and the thick end of the wedge block faces the curved plate; the connecting plate is connected to the box-shaped structure and the rotating ring, and the connecting plate is located below the curved plate.

[0015] Secondly, this disclosure also provides a method for operating a grader rotary ring device, comprising: providing a downwardly extending protrusion on the side wall of the rotary ring; using two box-shaped structures connected to the rotary ring and symmetrically arranged on both sides of the protrusion; connecting the box-shaped structures to the side wall of the rotary ring through an independent connecting plate assembly; and providing a dovetail portion connected to the protrusion on the arc plate in the connecting plate assembly.

[0016] In an alternative implementation, a dovetail portion is provided on the curved plate to form a concave buffer curved area on the curved plate.

[0017] Thirdly, this disclosure also provides a grader, including: a grader slewing device.

[0018] The beneficial effects of this invention are that the grader rotary device and its working method, as well as the grader itself, use an arc plate with a dovetail portion, and the dovetail portion extends into the protrusion of the rotary ring for connection, thereby improving the bending and torsional resistance of the arc plate, reducing the stress level of the dovetail weld, and improving the fatigue life of the weld; at the same time, by forming a concave buffer arc area on the arc plate, the stress on the arc plate can be more evenly distributed to the side of the arc plate used for connection.

[0019] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a grader rotary device provided in an embodiment of the present disclosure;

[0023] Figure 2 This is an exploded structural diagram of a grader rotary device provided in an embodiment of the present disclosure;

[0024] Figure 3 This is a schematic diagram of the structure of an arc plate provided in an embodiment of the present disclosure;

[0025] Figure 4 This is a side view of a grader rotary device provided in an embodiment of the present disclosure;

[0026] Figure 5 A side view of an arcuate plate provided in an embodiment of this disclosure;

[0027] Figure 6 This is a rear view structural schematic diagram of a grader rotary device provided in an embodiment of the present disclosure;

[0028] Figure 7 This is a schematic diagram of the structure of a grader provided in an embodiment of this disclosure.

[0029] In the picture:

[0030] Rotating ring 1, protrusion 11;

[0031] Box-shaped structure 2, bending section 21;

[0032] Connecting plate assembly 3, curved plate 31, dovetail 311, buffer curved area 312, first side 313, second side 314, third side 315, bending part 316, wedge block 32, connecting plate 33. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions 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, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.

[0035] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] like Figure 1 As shown, at least one embodiment provides a grader slewing device, including: a slewing ring 1 and two box-shaped structures 2, each box-shaped structure 2 being connected to the side wall of the slewing ring 1 via an independent connecting plate assembly 3.

[0037] In this embodiment, the connecting plate assembly 3 is used to connect the box-shaped structure 2 to the rotary ring 1. The lower ends of the two box-shaped structures 2 are used to install bulldozer blades, so that the bulldozer blades can adjust their angles by rotating the rotary ring 1. When the bulldozer blades are subjected to force, the box-shaped structure 2 will be subjected to a large impact and torque. Some of the force will act on the connecting plate assembly 3 between the box-shaped structure 2 and the rotary ring 1, causing the arc plate 31 in the connecting plate assembly 3 to break.

[0038] To solve the above problems, such as Figure 1 , Figure 2 As shown, in some embodiments, the sidewall of the rotating ring 1 has a downwardly extending protrusion 11, and two box-shaped structures 2 are symmetrically arranged on both sides of the protrusion 11; the two sides of the arc plate 31 in the connecting plate group 3 are respectively connected to the triangular area formed by the box-shaped structure 2 and the rotating ring 1; wherein, the side of the arc plate 31 connected to the rotating ring 1 has a dovetail portion 311 connected to the protrusion 11.

[0039] In this embodiment, an arc plate 31 with a dovetail portion 311 is used, and the dovetail portion 311 is connected to the protrusion 11 of the rotating ring 1, thereby improving the bending and torsional resistance of the arc plate 31 and reducing the stress level of the weld of the dovetail portion 311, so as to improve the fatigue life of the weld.

[0040] like Figure 3 As shown, in some embodiments, the side of the arc plate 31 connected to the rotating ring 1 has a dovetail portion 311 connected to the protrusion 11, and a concave buffer arc area 312 is formed on the arc plate 31.

[0041] In this embodiment, if the curved plate 31 does not have a concave buffer curved area 312 and adopts an approximately straight side, stress will concentrate at this point, which will easily cause cracks when operating under heavy load conditions. Therefore, this embodiment increases the connection area by providing a dovetail portion 311 on the curved plate 31 and forming a concave buffer curved area 312, so that when the curved plate 31 is subjected to force, the stress on it can be more evenly distributed to the side of the curved plate 31 used for connection.

[0042] like Figure 3 As shown, in some embodiments, the top view of the curved plate 31 is approximately "triangular"; wherein the curved plate 31 has a first side 313, a second side 314 and a third side 315; the first side 313 is connected to the rotating ring 1, the second side 314 is connected to the box structure 2, the dovetail portion 311 is located at the junction of the first side 313 and the third side 315, and the buffer curved area 312 is located on the third side 315.

[0043] In this embodiment, the approximately "triangular" arc plate 31 has a more stable structure, which allows the stress on the arc plate 31 to be distributed more evenly.

[0044] like Figures 4 to 6 As shown, in some embodiments, the box structure 2 is J-shaped; wherein the box structure 2 has a bent portion 21; the second side 314 of the arc plate 31 is connected to the bent portion 21 of the box structure 2.

[0045] In this embodiment, since the rotating ring 1 is circular, the front end of the box-shaped structure 2 can be directly welded to the rotating ring 1 for fixation. There is a large gap between the rear end of the box-shaped structure 2 and the rotating ring 1, which needs to be connected by the connecting plate assembly 3. The underside of the curved part 21 of the box-shaped structure 2 is used to install a bulldozer blade. By connecting the arc plate 31 in the connecting plate assembly 3 to the curved part 21 of the box-shaped structure 2, the bending and torsional resistance of the box-shaped structure 2 can be improved.

[0046] like Figure 4 , Figure 5 As shown, in some embodiments, the bending angle α of the arc plate 31 is in the range of 90° to 100°; preferably, the bending angle α of the arc plate 31 is in the range of 94° to 98°.

[0047] like Figure 5 , Figure 6As shown, in some embodiments, the curved plate 31 has a bend 316; wherein the dovetail portion 311 is located in the middle of the bend 316.

[0048] In this embodiment, the dovetail portion 311 is located in the middle of the bending portion 316, so that when the curved plate 31 is subjected to force, the stress on it can be distributed more evenly.

[0049] In some embodiments, the connecting plate assembly 3 further includes: a wedge block 32 and a connecting plate 33; wherein the wedge block 32 is connected to the box structure 2 and the rotating ring 1, and the thick end of the wedge block 32 faces the arc plate 31; the connecting plate 33 is connected to the box structure 2 and the rotating ring 1, and the connecting plate 33 is located below the arc plate 31.

[0050] In this embodiment, the wedge block 32 is set in the triangular region formed by the box structure 2 and the rotating ring 1, and is located in the small space at the junction of the box structure 2 and the rotating ring 1; the connecting plate 33 and the arc plate 31 form a stable connection structure by being set up vertically.

[0051] At least one embodiment also provides a method for operating the grader rotary device as described above, comprising: providing a downwardly extending protrusion 11 on the side wall of the rotary ring 1; using two box-shaped structures 2 connected to the rotary ring 1 and symmetrically arranged on both sides of the protrusion 11; connecting the box-shaped structures 2 to the side wall of the rotary ring 1 through an independent connecting plate assembly 3; and providing a dovetail portion 311 connected to the protrusion 11 on the arc plate 31 in the connecting plate assembly 3.

[0052] For the specific structure and implementation process of the grader's rotary device, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0053] In some embodiments, a dovetail portion 311 is provided on the arc plate 31 to form a concave buffer arc area 312 on the arc plate 31.

[0054] like Figure 7 As shown, at least one embodiment also provides a grader, including: a grader rotary device as described above.

[0055] For the specific structure and implementation process of the grader's rotary device, please refer to the relevant discussion in the above embodiments, which will not be repeated here.

[0056] In summary, the rotary ring device and its working method of this grader, as well as the grader's use of an arc plate 31 with a dovetail portion 311, and the dovetail portion 311 extending into the protrusion 11 of the rotary ring 1 for connection, thereby increasing the connection area between the arc plate 31 and the rotary ring 1, thereby improving the bending and torsional resistance of the arc plate 31; at the same time, by forming a concave buffer arc area 312 on the arc plate 31, the stress on the arc plate 31 can be more evenly distributed to the side of the arc plate 31 used for connection.

[0057] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.

[0058] In this document, when an element or layer is referred to as being “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be an intermediate element or layer.

[0059] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0060] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the apparatus in use or operation.

[0061] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A rotary device for a grader, comprising: A rotating ring (1) and two box-shaped structures (2), each of the box-shaped structures (2) being connected to the side wall of the rotating ring (1) via an independent connecting plate assembly (3), characterized in that, The sidewall of the rotating ring (1) has a downwardly extending protrusion (11), and the two box-shaped structures (2) are symmetrically arranged on both sides of the protrusion (11). The two sides of the arc plate (31) in the connecting plate group (3) are respectively connected to the triangular area formed by the box structure (2) and the rotating ring (1); The arc plate (31) has a dovetail portion (311) connected to the rotating ring (1) on the side that is connected to the protrusion (11).

2. The grader rotary device as described in claim 1, characterized in that, The side of the arc plate (31) connected to the rotating ring (1) has a dovetail (311) connected to the protrusion (11), and a concave buffer arc area (312) is formed on the arc plate (31).

3. The grader rotary device as described in claim 2, characterized in that, The top view of the curved plate (31) is approximately "triangular"; wherein The arc plate (31) has a first side (313), a second side (314) and a third side (315); The first side (313) is connected to the rotating ring (1), the second side (314) is connected to the box structure (2), the dovetail (311) is located at the junction of the first side (313) and the third side (315), and the buffer arc area (312) is located on the third side (315).

4. The grader rotary device as described in claim 3, characterized in that, The box-shaped structure (2) is J-shaped; wherein The box-shaped structure (2) has a curved section (21); The second side (314) of the arc plate (31) is connected to the curved part (21) of the box structure (2).

5. The grader rotary device as described in claim 1, characterized in that, The range of the bending angle α of the arc plate (31) is 90° to 100°.

6. The grader rotary device as described in claim 1, characterized in that, The curved plate (31) has a bent portion (316); wherein The dovetail portion (311) is located in the middle of the bent portion (316).

7. The grader rotary device as described in claim 2, characterized in that, The connecting plate assembly (3) further includes: a wedge block (32) and a connecting plate (33); wherein The wedge block (32) is connected to the box structure (2) and the rotating ring (1), and the thick end of the wedge block (32) faces the arc plate (31). The connecting plate (33) is connected to the box structure (2) and the rotating ring (1), and the connecting plate (33) is located below the arc plate (31).

8. A method for operating the rotary device of a grader as described in any one of claims 1-7, characterized in that, include: A downwardly extending protrusion (11) is provided on the side wall of the rotating ring (1). Two box-shaped structures (2) are connected to the rotating ring (1) and are symmetrically arranged on both sides of the protrusion (11); The box-shaped structure (2) is connected to the side wall of the rotating ring (1) through an independent connecting plate assembly (3); A dovetail (311) connected to the protrusion (11) is provided on the arc plate (31) in the connecting plate group (3).

9. The grader rotary device as described in claim 8, characterized in that, By providing a dovetail (311) on the arc plate (31), a concave buffer arc area (312) is formed on the arc plate (31).

10. A grader, characterized in that, include: The grader rotary device as described in any one of claims 1-7.

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