Wear-resistant bucket tooth

Abstract

A wear-resistant bucket tooth is used for solving the technical problem that when part of existing bucket teeth are replaced, only the whole tooth head can be replaced, and a bucket cannot work for a long time. Comprising a tooth holder, a tooth head is detachably arranged on the tooth holder, a tooth tip is arranged on the tooth head, a rotating rod is fixedly arranged on the tooth tip, a connecting block with the outer wall of a threaded structure is fixedly arranged at the end, away from the tooth tip, of the rotating rod, a connecting groove is formed in the inner bottom of the tooth head, a connecting hole communicated with the connecting groove is formed in the tooth head, and internal threads are arranged on the inner wall of the connecting hole. A first spring is fixedly arranged in the connecting groove, a buffer plate is fixedly arranged on the first spring, the connecting block penetrates through the connecting hole in a threaded mode, is arranged in the connecting groove and abuts against the buffer plate, the rotating rod is arranged in the connecting hole in a sliding mode along with the connecting block, a wear-resisting layer is arranged on the outer wall of the tooth tip, and a plurality of crushing teeth opposite to the rotating rod are fixedly arranged on the tooth tip. A limiting assembly is connected between the tooth tip and the tooth head. The tool is simple in structure and mainly used for dismounting and replacing the tooth head.

Description

Technical Field

[0001] The utility model relates to the technical field of bucket teeth, in particular to a wear-resistant bucket tooth. Background Art

[0002] The bucket teeth of an excavator are an important part of the excavator. They are a combination of tooth seats and tooth tips. When the excavator is working, the bucket teeth are first inserted into the soil or rock, so that the excavated soil or rock enters the bucket to complete the excavation. The bucket teeth play an important role in the excavation work.

[0003] There are some bucket teeth in the prior art, such as the utility model patent document with authorization announcement number "CN219157826U" and patent name "A safe, stable and wear-resistant excavator bucket tooth", which discloses a bucket tooth including a tooth head, a pulling head, a plug rod, a tooth tail, a connecting block, a compression spring and a tension spring.

[0004] When the tooth head in the patent document needs to be replaced, the insertion rod is moved by pulling the pull head to separate the insertion rod from the tooth tail. At this time, the insertion rod drives the connecting block to move synchronously, so that the connecting block compresses the compression spring and expands the tension spring, and then the tooth head and the tooth tail are disassembled and replaced. However, when some existing bucket teeth need to be replaced after long-term use, only the entire tooth head can be replaced, which wastes the material and cost of the tooth head, reduces the service life of the tooth head, and is not conducive to long-term bucket work. Utility Model Content

[0005] The utility model aims to address the deficiencies of the prior art and propose a wear-resistant bucket tooth to solve the technical problem mentioned in the background technology that when some of the existing bucket teeth need to be replaced after long-term use, only the entire tooth head can be replaced, thereby causing a waste of tooth head material and cost, reducing the service life of the tooth head, and being unfavorable for the bucket to work for a long time.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wear-resistant bucket tooth comprises a tooth seat, a tooth head is detachably provided on the tooth seat, a tooth tip is provided on the tooth head, a rotating rod is fixedly provided on the tooth tip, a connecting block with a threaded outer wall is fixedly provided on the end of the rotating rod away from the tooth tip, a connecting groove is provided on the inner bottom of the tooth head, a connecting hole communicated with the connecting groove is provided on the tooth head, an internal thread is provided on the inner wall of the connecting hole, a first spring is fixedly provided in the connecting groove, a buffer plate is fixedly provided on the first spring, the connecting block is threadedly passed through the connecting hole and arranged in the connecting groove and abuts against the buffer plate, and the rotating rod is slidably arranged in the connecting hole along with the connecting block, a wear-resistant layer is provided on the outer wall of the tooth tip, and a plurality of crushing teeth opposite to the rotating rod are fixedly provided on the tooth tip, and a limiting component is connected between the tooth tip and the tooth head.

[0008] Working principle:

[0009] When the tooth tip is worn and needs to be replaced, the operator releases the limit between the tooth head and the tooth tip through the limit assembly. Then the tooth tip is pulled down, and the connecting block is driven to abut against the connecting hole through the rotating rod. Then the operator rotates the tooth tip, thereby driving the connecting block to rotate through the rotating rod, and then the connecting block is rotated out of the connecting groove through the connecting hole, and the buffer plate is separated from the connecting block.

[0010] The beneficial effects of the utility model are:

[0011] During the use of the utility model, the operator realizes the positioning connection between the tooth tip and the tooth head through the cooperation between the connecting block and the connecting hole, which makes the disassembly and installation of the tooth tip faster and more convenient, and the structure is simple and the effect is better. The buffer plate and the first spring cooperate to provide buffer protection for the rotating rod and the connecting block, thereby increasing the service life of the tooth tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the embodiment of the utility model;

[0014] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.

[0015] Explanation of the accompanying drawings: tooth seat 1, tooth head 2, tooth tip 3, rotating rod 4, connecting block 5, connecting groove 6, connecting hole 7, first spring 8, buffer plate 9, wear-resistant layer 10, crushing tooth 11, sliding groove 12, sleeve 13, mounting groove 14, limit groove 15, limit block 16, mounting part 17, screw rod 18, mounting cavity 19, second spring 20, push plate 21, plug-in part 22, third spring 23, positioning part 24, nut 25, reinforcing rib 26, wear-resistant tungsten steel plate 27, bolt 28, bearing 29. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, a wear-resistant bucket tooth comprises a tooth seat 1, on which a tooth head 2 is detachably provided, on which a tooth tip 3 is provided, on which a rotating rod 4 is fixedly provided, and on which an end of the rotating rod 4 away from the tooth tip 3 is fixedly provided a connecting block 5 with a threaded outer wall, a connecting groove 6 is provided at the inner bottom of the tooth head 2, a connecting hole 7 communicating with the connecting groove 6 is provided on the tooth head 2, and an inner thread is provided on the inner wall of the connecting hole 7, a first spring 8 is fixedly provided in the connecting groove 6, and a buffer plate 9 is fixedly provided on the first spring 8, the connecting block 5 is threadedly passed through the connecting hole 7 and is arranged in the connecting groove 6 and abuts against the buffer plate 9, and the rotating rod 4 is slidably arranged in the connecting hole 7 along with the connecting block 5, a wear-resistant layer 10 is provided on the outer wall of the tooth tip 3, and a plurality of crushing teeth 11 opposite to the rotating rod 4 are fixedly provided on the tooth tip 3, and a limiting component is connected between the tooth tip 3 and the tooth head 2. As shown Figure 2 As shown, the wear-resistant layer 10 is a high manganese steel coating, and the hard material is convenient for wear-resistant protection of the tooth tip 3. Figure 2 As shown, a reinforcing rib 26 is provided inside the tooth head 2 to improve the hardness of the tooth head 2 and provide a better bucket effect.

[0018] During the use of the utility model, the operator realizes the positioning connection between the tooth tip 3 and the tooth head 2 through the cooperation between the connecting block 5 and the connecting hole 7, so that the disassembly and installation of the tooth tip 3 is faster and more convenient, and the structure is simple and the effect is better. The buffer plate 9 and the first spring 8 cooperate to provide buffer protection for the rotating rod 4 and the connecting block 5, so that the service life of the tooth tip 3 is increased.

[0019] like Figure 2 and Figure 3 As shown, the limit assembly includes an annular sliding groove 12, two sleeves 13 and two mounting grooves 14 provided on the tooth tip 3. The sliding groove 12 is provided at the end adjacent to the tooth head 2 and the tooth tip 3. The sliding groove 12 is connected to the end adjacent to the tooth tip 3 with a limit groove 15 smaller than the notch of the sliding groove 12. The two sleeves 13 slide through the limit groove 15, and the inner wall of the sleeve 13 is a threaded structure. Each sleeve 13 is fixed with a limit block 16 slidingly provided in the sliding groove 12. The mounting groove 14 is provided at the end adjacent to the tooth tip 3 and the tooth head 2. A mounting piece 17 is rotatably provided in the mounting groove 14. A screw rod 18 is fixed on the mounting piece 17. The two screw rods 18 are correspondingly threaded into the two sleeves 13. Figure 2 and Figure 3As shown, a bearing 29 is fixed in the mounting groove 14, and the mounting member 17 passes through the center hole of the bearing 29 and the two are fixedly connected. The bottom end of the mounting member 17 is a smooth round rod section and is rotated and inserted into the bottom of the mounting groove 14. When the worn tooth tip 3 needs to be disassembled, the operator slides the tooth tip 3 away from the tooth head 2, and then rotates the two screws 18 to make the two screws 18 slide out of the two sleeves 13. Then the operator rotates the tooth tip 3 again to drive the connecting block 5 to rotate out of the connecting groove 6 through the rotating rod 4, thereby disassembling the tooth tip 3. This design method is convenient for disassembly and installation between the tooth tip 3 and the tooth head 2, and the structure is simple and easy to operate. At the same time, the bearing 29 facilitates the smooth rotation of the screw 18, and the rotation and replacement of the tooth tip 3 is easy.

[0020] like Figure 2 As shown, a mounting cavity 19 is provided in the gear seat 1, a second spring 20 is fixed in the mounting cavity 19, a push plate 21 is fixed on the second spring 20, a plug-in piece 22 which is horizontal with the push plate 21 is slidably penetrated on the gear seat 1, the plug-in piece 22 is slidably penetrated into the mounting cavity 19, and a third spring 23 is wound around the plug-in piece 22, one end of the third spring 23 is fixed on the inner wall of the mounting cavity 19, the other end of the third spring 23 is fixed on the plug-in piece 22, and one end of the plug-in piece 22 which is arranged in the mounting cavity 19 is a wedge-shaped surface, which faces away from the push plate 21, a positioning piece 24 is fixed on the tooth head 2, the top surface of the positioning piece 24 is a wedge-shaped surface, and a through hole which matches the plug-in piece 22 is opened on the positioning piece 24, the plug-in piece 22 is inserted through the through hole and is inserted on the positioning piece 24, the third spring 23 is elastically stretched, and the positioning piece 24 abuts against the push plate 21. As shown Figure 1 and Figure 2 As shown, the end of the plug-in 22 away from its wedge-shaped surface is provided with an external thread. When the plug-in 22 is plugged into the positioning member 24, the external thread on the plug-in 22 is arranged outside the tooth seat 1, and a nut 25 is threadedly sleeved on the plug-in 22. When the tooth head 2 needs to be disassembled and installed, the operator unscrews the nut 25 and separates it from the plug-in 22, and then slides and pulls the plug-in 22 outward to separate the plug-in 22 from the positioning member 24. At this time, the second spring 20 pushes the positioning member 24 out of the installation cavity 19 through the push plate 21. Next, the operator inserts the positioning piece 24 on the new tooth head 2 into the installation cavity 19 in the tooth seat 1. When the wedge-shaped surface of the positioning piece 24 is inserted into the installation cavity 19 and abuts against the wedge-shaped surface of the plug-in piece 22, the third spring 23 elastically pushes the plug-in piece 22 to slide and abut against the wedge-shaped surface of the positioning piece 24 until it passes through the through hole and is plugged into the plug-in piece 22. Then, the nut 25 is screwed on the plug-in piece 22. This design method facilitates the installation and disassembly of the tooth head 2, and the structure is simple and easy to operate.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, the tooth head 2 is surrounded by a wear-resistant tungsten steel plate 27, and the wear-resistant tungsten steel plate 27 is threaded with a bolt 28 threadedly connected to the tooth head 2. This design method is convenient for installing and disassembling the wear-resistant tungsten steel plate 27, and the material is hard and easy to protect the tooth head 2.

[0022] Working principle:

[0023] When the tooth tip 3 needs to be disassembled, the operator slides the tooth tip 3 away from the tooth head 2, and then rotates the two screw rods 18 to make the two screw rods 18 slide out of the two sleeves 13, and then the operator rotates the tooth tip 3 again to drive the connecting block 5 to rotate out of the connecting groove 6 through the rotating rod 4. Then, the two screw rods 18 on the new tooth tip 3 are opposite to the two sleeves 13, and then the two screw rods 18 are rotated to make the two screw rods 18 correspondingly threaded into the two sleeves 13. During this process, the mounting member 17 is always rotated in the bearing 29. Then, the operator rotates the tooth tip 3, and drives the connecting block 5 to rotate through the connecting hole 7 and slide in the connecting groove 6 through the rotating rod 4, and the first spring 8 elastically pushes the buffer plate 9 to abut against the connecting block 5.

[0024] When the tooth head 2 needs to be disassembled and installed, the operator unscrews the nut 25 and separates it from the plug-in component 22, then slides and pulls the plug-in component 22 outward to separate the plug-in component 22 from the positioning component 24. At this time, the second spring 20 pushes the positioning component 24 out of the installation cavity 19 through the push plate 21. Next, the operator inserts the positioning component 24 on the new tooth head 2 into the installation cavity 19 in the tooth seat 1. When the wedge-shaped surface of the positioning component 24 is inserted into the installation cavity 19 and abuts against the wedge-shaped surface of the plug-in component 22, the third spring 23 elastically pushes the plug-in component 22 to slide and abut against the wedge-shaped surface of the positioning component 24 until it penetrates the through hole and is plugged into the plug-in component 22. Then, the nut 25 is screwed on the plug-in component 22.

[0025] When the wear-resistant tungsten steel plate 27 needs to be installed, the operator sleeves it on the tooth head 2 and then screws in the bolt 28 so that the bolt 28 is threaded through the wear-resistant tungsten steel plate 27 and is threadedly connected with the tooth head 2 .

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A wear-resistant bucket tooth, comprising a tooth seat (1), characterized in that: The tooth seat (1) is provided with a detachable tooth head (2), the tooth head (2) is provided with a tooth tip (3), the tooth tip (3) is fixedly provided with a rotating rod (4), the end of the rotating rod (4) away from the tooth tip (3) is fixedly provided with a connecting block (5) with an outer wall having a threaded structure, the inner bottom of the tooth head (2) is provided with a connecting groove (6), the tooth head (2) is provided with a connecting hole (7) which is in communication with the connecting groove (6), the inner wall of the connecting hole (7) is provided with an internal thread, and a first spring (8) is fixedly provided in the connecting groove (6). ), a buffer plate (9) is fixedly provided on the first spring (8), the connecting block (5) is threadedly passed through the connecting hole (7) and is arranged in the connecting groove (6) and abuts against the buffer plate (9), and the rotating rod (4) is slidably arranged in the connecting hole (7) along with the connecting block (5), a wear-resistant layer (10) is provided on the outer wall of the tooth tip (3), and a plurality of crushing teeth (11) opposite to the rotating rod (4) are fixedly provided on the tooth tip (3), and a limit assembly is connected between the tooth tip (3) and the tooth head (2).

2. The wear-resistant bucket tooth according to claim 1, characterized in that: The limiting assembly comprises an annular sliding groove (12), two sleeves (13) and two mounting grooves (14) arranged on the tooth tip (3); the sliding groove (12) is arranged at one end of the tooth head (2) adjacent to the tooth tip (3); the sliding groove (12) is connected to one end adjacent to the tooth tip (3) with a limiting groove (15) smaller than the notch of the sliding groove (12); the two sleeves (13) are slidably arranged through the limiting grooves (15), and the sleeves (13) are arranged to slide through the limiting grooves (15). The inner wall of the toothed sleeve (13) is a threaded structure. Each sleeve (13) is fixedly provided with a limit block (16) which is slidably arranged in the sliding groove (12). The mounting groove (14) is arranged at an end adjacent to the tooth tip (3) and the tooth head (2). A mounting member (17) is rotatably arranged in the mounting groove (14). A screw rod (18) is fixedly arranged on the mounting member (17). The two screw rods (18) are correspondingly threadedly arranged in the two sleeves (13).

3. The wear-resistant bucket tooth according to claim 1, characterized in that: The tooth holder (1) is provided with a mounting cavity (19), a second spring (20) is fixedly provided in the mounting cavity (19), a push plate (21) is fixedly provided on the second spring (20), a plug-in component (22) which is horizontal to the push plate (21) is slidably provided on the tooth holder (1), the plug-in component (22) is slidably provided in the mounting cavity (19), and a third spring (23) is wound around the plug-in component (22), one end of the third spring (23) is fixedly provided on the inner wall of the mounting cavity (19), and the other end of the third spring (23) is fixedly provided on the inner wall of the mounting cavity (19). The connector (22) is arranged on the connector (22), and one end of the connector (22) arranged in the installation cavity (19) is a wedge-shaped surface, and the wedge-shaped surface is away from the push plate (21). A positioning member (24) is fixed on the tooth head (2), and the top surface of the positioning member (24) is a wedge-shaped surface and a through hole matched with the connector (22) is opened on the positioning member (24). The connector (22) is inserted into the positioning member (24) through the through hole. The third spring (23) is elastically stretched, and the positioning member (24) abuts against the push plate (21).

4. The wear-resistant bucket tooth according to claim 3, characterized in that: The plug-in component (22) is provided with an external thread at one end away from its wedge-shaped surface. When the plug-in component (22) is plugged into the positioning component (24), the external thread on the plug-in component (22) is arranged outside the gear seat (1), and a nut (25) is threadedly sleeved on the plug-in component (22).

5. The wear-resistant bucket tooth according to claim 1, characterized in that: The wear-resistant layer (10) is a high manganese steel coating.

6. The wear-resistant bucket tooth according to claim 1, characterized in that: A reinforcing rib (26) is provided inside the tooth head (2).

7. The wear-resistant bucket tooth according to claim 1, characterized in that: The upper enclosure of the tooth head (2) is provided with a wear-resistant tungsten steel plate (27), and the wear-resistant tungsten steel plate (27) is threadedly penetrated with a bolt (28) threadedly connected to the tooth head (2).

8. The wear-resistant bucket tooth according to claim 2, characterized in that: A bearing (29) is fixedly arranged in the installation groove (14), the installation member (17) passes through the center hole of the bearing (29) and the two are fixedly connected, and the bottom end of the installation member (17) is a smooth round rod segment and is rotatably inserted into the bottom of the installation groove (14).

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