Improved bucket tooth structure

Abstract

The utility model belongs to the field of wear-resistant metal structures, and particularly relates to an improved bucket tooth structure. The bucket tooth comprises a bucket tooth reinforcing shell, a bucket tooth inner filling body, a bucket tooth base and a connecting structure, one end of the bucket tooth reinforcing shell is closed, the other end of the bucket tooth reinforcing shell is open, the outer contour of the bucket tooth inner filling body is matched with the inner contour of the bucket tooth reinforcing shell, the bucket tooth inner filling body is arranged at the top of the bucket tooth base, and the open end of the bucket tooth reinforcing shell is provided with a first fixing piece extending towards the inner side; a containing groove used for containing the first fixing piece is formed in the corresponding position of the outer side of the bucket tooth inner filling body, the bucket tooth reinforcing shell is arranged on the outer side of the bucket tooth inner filling body in a sleeving mode, the first fixing piece stretches into the containing groove, and a gap between the first fixing piece and the containing groove is filled with the connecting structure. The bucket tooth structure is firm in overall structure, long in service life, suitable for long-time operation in a severe working condition environment, capable of greatly reducing use of high-abrasion-resistant materials such as hard alloy and the like, and low in manufacturing cost.

Description

Technical Field

[0001] The utility model belongs to the field of wear-resistant equipment, and particularly relates to an improved bucket tooth structure. Background Art

[0002] A bucket tooth is an important component installed on the bucket or shovel of construction machinery such as excavators, loaders, bulldozers, etc. Its main function is to directly cut, tear, and break objects during excavation, loading, or bulldozing operations. Bucket teeth are usually made of high wear-resistant materials, such as special steel or composite materials, to ensure their long working life under harsh working conditions. In terms of design, the front end of the bucket tooth is sharp to make it easier to cut into the soil or rock.

[0003] Bucket teeth not only require wear resistance, but also excellent comprehensive properties such as hardness and high-temperature resistance. Cemented carbide is widely used in high-wear environments in fields such as mining and metallurgy due to its high hardness and wear resistance. However, cemented carbide materials are often costly. Summary of the Utility Model

[0004] In view of the above problems, in order to achieve a bucket tooth structure with low cost and high strength, the utility model proposes an improved bucket tooth structure.

[0005] The utility model provides an improved bucket tooth structure, which includes: a bucket tooth reinforcement shell, a connection structure, a bucket tooth inner filler, and a bucket tooth seat. One end of the bucket tooth reinforcement shell is closed and the other end is open. The outer contour of the bucket tooth inner filler matches the inner contour of the bucket tooth reinforcement shell. The bucket tooth inner filler is arranged on the top of the bucket tooth seat. The open end of the bucket tooth reinforcement shell has a first fixing member extending inward. The outer side of the bucket tooth inner filler has a receiving groove at the corresponding position for receiving the first fixing member. The size of the receiving groove is larger than the size of the first fixing member. The bucket tooth reinforcement shell is sleeved on the outer side of the bucket tooth inner filler, and the first fixing member extends into the receiving groove. The connection structure is filled in the gap between the first fixing member and the receiving groove.

[0006] Further, the bucket tooth reinforcement shell is made of a material with wear resistance superior to that of the bucket tooth inner filler.

[0007] Further, the bucket tooth reinforcement shell is formed by splicing two half shells or more partial shells, and the connection structure is cast in the gap between the first fixing member and the receiving groove.

[0008] Further, the first fixing member surrounds the open end of the tooth bucket reinforcement shell and includes a laterally extending portion and a reversely extending portion. The laterally extending portion extends towards the inner side of the tooth bucket reinforcement shell, and the reversely extending portion is connected to the innermost side of the laterally extending portion and extends towards the closed end of the tooth bucket reinforcement shell.

[0009] Further, a second fixing member is provided at the outer wall of the inner filling body of the tooth bucket below the accommodation groove. The second fixing member extends from the outer wall of the inner filling body of the tooth bucket into the accommodation groove and maintains a predetermined interval from the first fixing member. The coupling structure is filled in the gap between the first fixing member, the second fixing member and the accommodation groove.

[0010] Further, the cross-section of the tooth bucket structure is generally rectangular, and the cross-sectional areas of the tooth bucket reinforcement shell, the inner filling body of the tooth bucket and the tooth bucket seat gradually decrease from one end to the other end.

[0011] Further, the inner filling body of the tooth bucket and the tooth bucket seat are integrally formed, or are separately formed and tightly fixed together.

[0012] Further, the tooth bucket reinforcement shell is made of hard alloy, ceramic or special alloy steel, the coupling structure is made of stainless steel, high manganese steel, cast iron, copper alloy, titanium alloy or aluminum alloy, and the inner filling body of the tooth bucket and the tooth bucket seat are made of low carbon steel, ductile iron, stainless steel or high manganese steel.

[0013] Further, the front view section of the tooth bucket reinforcement shell is rectangular or trapezoidal, the side view section is conical or frustum-shaped, and the top end face and the side are directly and smoothly transitioned.

[0014] Beneficial Effects

[0015] 1. The present utility model proposes an improved tooth bucket structure. In this patent, an interlocking structure is adopted between the inner filling body of the tooth bucket and the tooth bucket reinforcement shell to ensure the tight combination of the hard shell and the filling body. The inner filling body of the tooth bucket tightly supports the tooth bucket reinforcement shell, and the coupling structure is used to firmly fix and lock the inner filling body of the tooth bucket and the tooth bucket reinforcement shell, which can greatly reduce the use of high wear-resistant materials such as hard alloy. At the same time, through internal support and locking, the fragmentation of the surface material is avoided, and the two complement each other. The structure of the present utility model is simple and reasonable in design, which is beneficial to industrial production.

[0016] 2. In the preferred implementation mode, fixing members are provided at both the upper and lower ends of the coupling structure of the present utility model, which improves the locking stability of the coupling structure, further ensures the tight combination of the inner filling body of the tooth bucket and the tooth bucket reinforcement shell, and improves the operation intensity under harsh working conditions.

[0017] 3. In a preferred implementation, the tooth tip reinforcement shell of the present utility model is formed by splicing two or more partial shells, which is convenient for compensating for the installation difficulty caused by too small a gap between the inner cavity of the tooth tip reinforcement shell and the inner filling body of the tooth tip, and ensuring that the tooth tip reinforcement shell is smoothly sleeved outside the inner filling body of the tooth tip.

[0018] 4. In a preferred implementation, the inner filling body of the tooth tip and the tooth tip seat of the present utility model are fixedly connected in a split manner, which is convenient for mold manufacturing and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic exploded view of the tooth tip structure of Embodiment 1 of the present utility model;

[0020] Figure 2 is a three-dimensional structure diagram of the tooth tip reinforcement shell of Embodiment 1 of the present utility model;

[0021] Figure 3 is a three-dimensional structure diagram of the connection structure of Embodiment 1 of the present utility model;

[0022] Figure 4 is a side view of the tooth tip reinforcement shell of Embodiment 1 of the present utility model;

[0023] Figure 5 is Figure 4 a cross-sectional view taken along A-A of

[0024] Figure 6 is a schematic exploded view of the tooth tip structure of a variant of Embodiment 2 of the present utility model;

[0025] Figure 7 is Figure 6 a partial enlarged view of

[0026] Figure 8 is a three-dimensional structure diagram of the connection structure of a variant of Embodiment 2 of the present utility model;

[0027] Figure 9 in which (a) and (b) are schematic structural diagrams of the assembled states of the two tooth tip structures of Embodiment 1 and Embodiment 2 of the present utility model respectively.

[0028] Wherein, 1 - tooth tip reinforcement shell; 10 - first fixing member; 100 - transverse extension part; 101 - reverse extension part; 2 - connection structure; 3 - inner filling body of tooth tip; 4 - tooth tip seat; 5 - receiving groove; 50 - second fixing member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present utility model will be further described in detail below in conjunction with the embodiments and the drawings, but the implementation manners of the present utility model are not limited thereto.

[0030] The present utility model provides an improved tooth tip structure.

[0031] Example 1

[0032] As Figures 1-3 shown, the tooth structure of the utility model includes a tooth reinforcement shell 1, a connection structure 2, a tooth inner filling body 3 and a tooth seat 4.

[0033] One end of the tooth reinforcement shell 1 is closed and the other end is open. The outer contour of the tooth inner filling body 3 matches the inner contour of the tooth reinforcement shell 1. The tooth inner filling body 3 is arranged at the top of the tooth seat 4 (the two are integrally formed). A first fixing member 10 extends inward from the open end of the tooth reinforcement shell 1. A receiving groove 5 for receiving the first fixing member 10 is provided at a corresponding position on the outer side of the tooth inner filling body 3. The size of the receiving groove 5 is larger than the size of the first fixing member 10. The tooth reinforcement shell 1 is sleeved on the outer side of the tooth inner filling body 3. The first fixing member 10 extends into the receiving groove 5, and the connection structure 2 is filled in the gap between the first fixing member 10 and the receiving groove 5.

[0034] In this embodiment, the tooth reinforcement shell 1 is formed by splicing two half shells. During installation, the first fixing member 10 slides into place along the receiving groove 5 from the open end of the tooth reinforcement shell 1.

[0035] The first fixing member 10 surrounds the open end of the tooth reinforcement shell 1 ( Figure 2 in the lower middle part, and no fixing member is provided in the area for splicing on the side part), and includes a transverse extension part 100 and a reverse extension part 101. The transverse extension part 100 extends toward the inner side of the tooth reinforcement shell 1, and the reverse extension part 101 is connected to the innermost side of the transverse extension part 100 and extends toward the closed end of the tooth reinforcement shell 1.

[0036] The connection structure 2 enters the gap between the first fixing member 10 and the receiving groove 5 by casting and solidifies after cooling. The connection structure 2 realizes interlocking connection with the tooth reinforcement shell 1 and the tooth seat 4 in terms of geometric structure.

[0037] Preferably, the tooth reinforcement shell 1 is made of hard alloy, ceramic or special alloy steel.

[0038] Preferably, the connection structure 2 is made of stainless steel, high manganese steel, cast iron, copper alloy, titanium alloy or aluminum alloy.

[0039] Preferably, the tooth inner filling body 3 and the tooth seat 4 are made of low carbon steel, ductile iron, stainless steel or high manganese steel.

[0040] Preferably, the tooth reinforcement shell 1 is made of a material with wear resistance superior to that of the tooth inner filling body 3.

[0041] As Figures 4-5As shown, the front view cross-section of the bucket tooth reinforcement shell 1 is rectangular or trapezoidal, the side view cross-section is conical or frustum-shaped, and the top end face and the side are directly and smoothly transitioned.

[0042] In the structure of this embodiment, an interlocking structure is adopted between the bucket tooth filling body and the bucket tooth reinforcement shell to ensure the tight combination of the hard shell and the filling body. The bucket tooth filling body tightly supports the bucket tooth reinforcement shell, and the connecting structure is used to firmly fix and lock the bucket tooth filling body and the bucket tooth reinforcement shell. The overall structure is firm, not only has high hardness performance, but also has high wear resistance performance, high temperature resistance performance, high service life, and is suitable for long-term operation in harsh working conditions. It can greatly reduce the use of high wear-resistant materials such as cemented carbide, and the manufacturing cost is low.

[0043] Embodiment 2

[0044] Figures 6-8 It is a bucket tooth structure which is a variant of Embodiment 1. A second fixing member 50 is provided below the receiving groove 5 and on the outer wall of the inner filling body 3 of the bucket tooth. The second fixing member 50 extends from the outer wall of the inner filling body 3 of the bucket tooth into the receiving groove 5, and a predetermined interval is maintained between it and the first fixing member 10. The connecting structure 2 is filled in the gap between the first fixing member 10, the second fixing member 50 and the receiving groove 5.

[0045] Since the connecting structure 2 is formed by casting, it can also be adaptively adjusted.

[0046] In the structure of this embodiment, fixing members are provided at both the upper and lower ends of the connecting structure, which improves the locking stability of the connecting structure, further ensures the tight combination of the bucket tooth filling body and the bucket tooth reinforcement shell, and improves the working strength under harsh working conditions.

[0047] Embodiment 3

[0048] Figure 9 In (a) and (b) of this embodiment are respectively the schematic structural diagrams of the assembled states of the bucket tooth structures of Embodiment 1 and Embodiment 2. The cross-sections of the two bucket tooth structures are generally rectangular, and the cross-sectional areas of the bucket tooth reinforcement shell 1, the inner filling body 3 of the bucket tooth and the bucket tooth seat 4 gradually decrease from one end to the other end.

[0049] Embodiment 4

[0050] This embodiment is a variant of the inner filling body 3 of the bucket tooth and the bucket tooth seat 3 of Embodiment 1. The inner filling body 3 of the bucket tooth and the bucket tooth seat 3 are formed separately and tightly fixed together, which is convenient for mold manufacturing and installation.

[0051] Application examples:

[0052] This bucket tooth structure of the present utility model composed of a bucket tooth reinforcement shell, a connecting material and a bucket tooth seat can be applied to:

[0053] 1. Mining and tunneling: High-wear-resistant tool components used in mining and tunneling equipment, such as bucket teeth, drill bits, tunneling teeth, etc.

[0054] 2. Machining: Cutting tool components used for manufacturing those requiring high wear resistance, such as milling cutters, turning tools, etc.

[0055] 3. Construction engineering: High-stress and high-wear components used in construction engineering machinery, such as crushers, bucket teeth, etc.

[0056] Although the principles of the present invention have been described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are only explanations of the illustrative implementation modes of the present invention and do not limit the scope of the present invention. The details in the embodiments do not constitute a limitation on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple substitutions based on the technical solution of the present invention all fall within the protection scope of the present invention.

Claims

1. An improved bucket tooth structure, characterized in that: The bucket tooth structure comprises: A bucket tooth reinforcement shell (1), a connection structure (2), a bucket tooth inner filling body (3) and a bucket tooth seat (4), wherein one end of the bucket tooth reinforcement shell (1) is closed and the other end is open, the outer contour of the bucket tooth inner filling body (3) matches the inner contour of the bucket tooth reinforcement shell (1), the bucket tooth inner filling body (3) is arranged on the top of the bucket tooth seat (4), the open end of the bucket tooth reinforcement shell (1) has a first fixing member (10) extending toward the inside, the outer side of the bucket tooth inner filling body (3) has a receiving groove (5) for receiving the first fixing member (10) at a corresponding position, the size of the receiving groove (5) is larger than the size of the first fixing member (10), the bucket tooth reinforcement shell (1) is sleeved on the outer side of the bucket tooth inner filling body (3), the first fixing member (10) extends into the receiving groove (5), and the connection structure (2) fills the gap between the first fixing member (10) and the receiving groove (5).

2. The improved bucket tooth structure according to claim 1, characterized in that: The bucket tooth reinforcement shell (1) is made of a material having a wear resistance that is superior to the wear resistance of the filling body (3) in the bucket tooth.

3. The improved bucket tooth structure according to claim 1, characterized in that: The bucket tooth reinforcement shell (1) is formed by splicing two half shells, or by splicing more partial shells, and the connecting structure (2) is cast in the gap between the first fixing member (10) and the accommodating groove (5).

4. The improved bucket tooth structure according to claim 1, characterized in that: The first fixing member (10) surrounds the open end of the bucket tooth reinforcement shell (1) and comprises a lateral extension portion (100) and a reverse extension portion (101), wherein the lateral extension portion (100) extends toward the inner side of the bucket tooth reinforcement shell (1), and the reverse extension portion (101) is connected to the innermost side of the lateral extension portion (100) and extends toward the closed end of the bucket tooth reinforcement shell (1).

5. The improved bucket tooth structure according to claim 1, characterized in that: A second fixing member (50) is provided below the receiving groove (5) and at the outer wall of the filling body (3) in the bucket tooth. The second fixing member (50) extends from the outer wall of the filling body (3) in the bucket tooth into the receiving groove (5) and maintains a predetermined interval with the first fixing member (10). The connecting structure (2) is filled in the gap between the first fixing member (10), the second fixing member (50) and the receiving groove (5).

6. The improved bucket tooth structure according to claim 4, characterized in that: The cross-section of the bucket tooth structure is generally rectangular, and the cross-sectional areas of the bucket tooth reinforcement shell (1), the bucket tooth inner filling body (3) and the bucket tooth seat (4) all gradually decrease from one end toward the other end.

7. The improved bucket tooth structure according to claim 4, characterized in that: The bucket tooth inner filling body (3) and the bucket tooth seat (4) are formed in one piece, or the two are formed separately and are tightly connected.

8. The improved bucket tooth structure according to claim 1, characterized in that: The bucket tooth reinforcement shell (1) is made of hard alloy, ceramic or special alloy steel, the connecting structure (2) is made of stainless steel, high manganese steel, cast iron, copper alloy, titanium alloy or aluminum alloy, and the bucket tooth inner filling body (3) and bucket tooth seat (4) are made of low carbon steel, ductile iron, stainless steel or high manganese steel.

9. The improved bucket tooth structure according to claim 1, characterized in that: The bucket tooth reinforcement shell (1) has a rectangular or trapezoidal main view cross section, a conical or frustum cross section, and a direct and smooth transition between the top end face and the side face.

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