Excavator bucket tooth

Abstract

The utility model belongs to the technical field of excavator accessories, and particularly relates to an excavator bucket tooth which comprises a tooth holder, a tooth tip, a limiting groove, a limiting block and a locking piece, a first extending block is arranged at one end of the tooth holder, and a positioning groove is formed in the first extending block; a second extension block is arranged at one end of the tooth tip, and a positioning block matched with the positioning groove is arranged on the second extension block; the limiting groove is formed in the tooth holder, and the forming direction of the limiting groove is perpendicular to the forming direction of the positioning groove; the limiting block is arranged on the tooth tip and can be clamped into the limiting groove after the positioning block is clamped into the positioning groove; the locking piece is arranged on the tooth holder and can lock the limiting block in the limiting groove; compared with the prior art, the excavator bucket tooth is easy to disassemble and assemble and stable in structure, and the connecting structure is not prone to being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavator accessories, and particularly relates to an excavator bucket tooth. Background Art

[0002] An excavator bucket tooth is a wear-resistant component installed at the front end of an excavator bucket, mainly used for breaking and excavating materials such as soil and rock.

[0003] Chinese Patent with publication number CN210562383U discloses an excavator bucket tooth, which includes a tooth base and a tooth tip. The tooth base includes a connecting seat that cooperates with the tooth tip. The connecting seat has a first through hole arranged horizontally and a through groove arranged vertically; one end of the tooth tip close to the tooth base is provided with a connecting groove sleeved outside the connecting seat. Second through holes coaxially arranged with the first through hole are provided on both side walls of the connecting groove. A connecting plate embedded in the through groove is arranged in the connecting groove. A third through hole coaxially arranged with the first through hole and having a diameter equivalent to that of the first through hole is provided on the connecting plate; A connecting component for relatively fixing the tooth base and the tooth tip is sleeved in the first through hole, the second through hole and the third through hole; The connecting component includes a first rod and a second rod connected by threads. The design of this technology can slow down the wear at the connection position of the tooth tip, increase the service life, and at the same time, the replacement and disassembly of the tooth tip are more convenient;

[0004] This technology connects the tooth base and the tooth tip through simple threaded connection. We know that threaded connection relies on appropriate pre-tightening force to ensure the reliability of the connection. During the working process of the bucket tooth, it is necessary to continuously impact soil, rock, etc. A great impact will be generated on the tooth tip during this process. If the pre-tightening force is insufficient, the tooth base and the tooth tip may become loose; If the pre-tightening force is too large, the threaded structure may break or be damaged. Therefore, a more appropriate pre-tightening force needs to be applied, but it is difficult to accurately control the pre-tightening force during the installation process. Therefore, this excavator bucket tooth needs to be improved. Content of the Utility Model

[0005] The purpose of the utility model is to provide an excavator bucket tooth for the above-mentioned existing technical problems. This excavator bucket tooth is simple to disassemble and assemble, has a stable structure, and the connection structure is not easily damaged.

[0006] In view of this, the utility model provides an excavator bucket tooth, including:

[0007] A tooth base, one end of the tooth base is provided with a first extension block, and a positioning groove is opened on the first extension block;

[0008] A tooth tip, one end of the tooth tip is provided with a second extension block, and a positioning block adapted to the positioning groove is provided on the second extension block;

[0009] A limiting groove is opened on the tooth base, and the opening direction of the limiting groove is perpendicular to the opening direction of the positioning groove;

[0010] A limiting block is provided on the tooth tip. The limiting block can be inserted into the limiting groove after the positioning block is inserted into the positioning groove.

[0011] A locking member is provided on the tooth base. The locking member can lock the limiting block in the limiting groove.

[0012] In this technical solution, in the assembled state of the bucket tooth, the positioning block is stuck in the positioning groove, the limiting block is stuck in the limiting groove, and the locking member locks the limiting block so that the limiting block will not withdraw from the limiting groove. In this way, the cooperation between the limiting block and the limiting groove restricts the longitudinal displacement between the tooth base and the tooth tip, and the cooperation between the positioning block and the positioning groove restricts the transverse displacement between the tooth base and the tooth tip. Moreover, the restrictions on the tooth base and the tooth tip in the transverse and longitudinal directions are related. The transverse restriction needs to be released after the longitudinal restriction is released first. The impact on the bucket tooth is instantaneous and unidirectional, and will not damage the restrictions in the two perpendicular directions, nor will it damage the overall structure of the bucket tooth.

[0013] In the above technical solution, further, a hidden groove is formed in the end wall of the tooth tip. The limiting block is slidably arranged in the hidden groove. One end of the limiting block can extend out of the hidden groove and then be inserted into the limiting groove, and the limiting block can be completely hidden in the hidden groove.

[0014] In the above technical solution, further, a pushing groove is formed in the side wall of the hidden groove. The pushing groove penetrates through the side wall of the hidden groove. A pushing block is provided on the limiting block, and the pushing block is slidably arranged in the pushing groove.

[0015] In the above technical solution, further, a force-applying inclined surface is provided at one end of the pushing block away from the limiting block.

[0016] In the above technical solution, further, an inserting groove is provided on the tooth base perpendicular to the opening direction of the limiting groove. A retreating groove is formed in the side wall of the limiting groove on the side away from the inserting groove. The locking member includes a locking block and a connecting rod. The contour of the locking block is adapted to the opening of the inserting groove. The connecting rod can rotate in the inserting groove, and the locking block can enter the retreating groove. A groove is formed at one end of the limiting block close to the locking member, and the groove can allow the connecting rod to pass through. A locking groove for the locking block to be inserted into is provided on the bottom surface of the limiting block. When the locking block rotates to be misaligned with the inserting groove and withdraws from the retreating groove, it can be inserted into the locking groove.

[0017] In the above technical solution, further, an extrusion block is provided in the retreating groove, and a spring is connected between the extrusion block and the bottom surface of the retreating groove.

[0018] In the above technical solution, further, a receiving groove is formed in the side wall of the inserting groove close to the tooth base surface, and the end of the connecting rod can be completely hidden in the receiving groove.

[0019] In the above technical solution, further, a plurality of protruding portions are provided on the side wall of the positioning groove, and recessed portions adapted to these protruding portions are provided on the side wall of the positioning block.

[0020] In the above technical solution, further, mounting holes and mounting grooves are formed in the tooth base.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1. Through the cooperation of the tooth base, the first extension block, the positioning groove, the limiting groove, the tooth tip, the second extension block, the positioning block, the limiting block, and the locking member, two sets of mutually perpendicular limiting structures are formed between the tooth base and the tooth tip to keep the tooth base and the tooth tip stably connected, which can improve the structural stability of the bucket tooth during use; at the same time, these two sets of limiting structures between the tooth base and the tooth tip are formed in sequence. During the disassembly of the bucket tooth, only by releasing the two sets of limiting structures in sequence, the tooth base and the tooth tip can be disassembled, making the bucket tooth have good interchangeability and reducing the use cost.

[0023] 2. By providing a hidden groove at the end of the tooth tip for the limiting block to hide, the limiting block can be hidden in the hidden groove during the process of snapping the positioning block into the positioning groove, and then the limiting block slides out of the hidden groove and snaps into the limiting groove after the positioning block and the positioning groove are cooperated. In this way, the end faces of the tooth base and the tooth tip can be fitted after assembly, reducing the gap between the tooth base and the tooth tip, and further improving the stability of the overall structure of the bucket tooth.

[0024] 3. By designing the locking member as a connecting rod and a locking block, and providing an insertion groove and a retraction groove on the tooth base to cooperate with the connecting rod and the locking block, only by rotating the connecting rod and the locking block by a certain angle and moving axially by a certain distance, the locking and unlocking of the limiting block can be achieved. The operation is simple, and it is convenient to take out the locking member, reducing the difficulty of disassembling the bucket tooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the split state of the present utility model.

[0027] Figure 2 It is a three-dimensional structural schematic diagram of the assembled state of the present utility model.

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the tooth base and the locking member in the present utility model.

[0029] Figure 4 This is a top view structural schematic diagram of the tooth base in the present utility model.

[0030] Figure 5 This is a longitudinal sectional structural schematic diagram of the middle part of the tooth base in the present utility model.

[0031] Figure 6 This is a three-dimensional structural schematic diagram of the bottom of the tooth tip in the present utility model.

[0032] Figure 7 This is a schematic diagram of the position and structure where the locking groove is opened in the present utility model.

[0033] The markings in the figure are indicated as:

[0034] 1. Tooth base; 2. First extension block; 3. Positioning groove; 301. Protruding part; 4. Tooth tip; 5. Second extension block; 6. Positioning block; 601. Depressed part; 7. Limiting groove; 8. Limiting block; 9. Locking member; 901. Locking block; 902. Connecting rod; 10. Hidden groove; 11. Pushing groove; 12. Pushing block; 1201. Force-applying inclined surface; 13. Insertion groove; 14. Retreating groove; 15. Groove; 16. Locking groove; 17. Extrusion block; 18. Spring; 19. Accommodating groove; 20. Mounting hole; 21. Mounting groove; Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the terms used here are only for describing specific embodiments, rather than intending to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] Embodiment 1

[0038] like Figures 1-6 As shown, this embodiment provides an excavator bucket tooth, including: a tooth seat 1, a tooth tip 4, a limiting groove 7, a limiting block 8, a locking member 9,

[0039] See also Figure 3 A first extension block 2 is provided at the bottom of one end of the gear holder 1, a positioning groove 3 is provided in the longitudinal direction of the first extension block 2, and a mounting hole 20 and a mounting groove 21 for connecting with an excavator bucket are provided at the other end of the gear holder 1;

[0040] See also Figure 6 The top of one end of the tooth tip 4 is provided with a second extension block 5, and the bottom of the second extension block 5 is provided with a positioning block 6 adapted to the positioning groove 3. The positioning block 6 can be inserted into the positioning groove 3 along the longitudinal direction. The other end of the tooth tip 4 is a tip. During the working process of the bucket tooth, the tip of the tooth tip 4 contacts with soil, rock and other materials. Please refer to Figure 2 When the gear holder 1 and the tooth tip 4 are assembled, the upper surface of the first extension block 2 fits with the bottom surface of the second extension block 5. At this time, the upper surface of the gear holder 1 is flush with the upper surface of the tooth tip 4, and the bottom surface of the gear holder 1 is flush with the bottom surface of the tooth tip 4;

[0041] See also Figure 3 The limiting groove 7 is provided on the end surface of the first extension block 2 provided on the gear seat 1, and the opening direction of the limiting groove 7 is perpendicular to the opening direction of the positioning groove 3, that is, it is opened in the horizontal direction;

[0042] The limiting block 8 is arranged at one end of the tooth tip 4 where the second extension block 5 is arranged. The limiting block 8 can be inserted into the limiting groove 7 in the transverse direction after the positioning block 6 is inserted into the positioning groove 3.

[0043] The locking member 9 is arranged on the gear seat 1, and the locking member 9 can lock the limit block 8 in the limit groove 7, so that the limit block 8 cannot be separated from the limit groove 7;

[0044] In this embodiment, the positioning block 6 can limit the lateral displacement between the tooth seat 1 and the tooth tip 4 after being inserted into the positioning groove 3, and the limiting block 8 can limit the longitudinal displacement between the tooth seat 1 and the tooth tip 4 after being locked in the limiting groove 7;

[0045] In this embodiment, when the bucket tooth is assembled, the positioning block 6 is stuck in the positioning groove 3, the limit block 8 is stuck in the limit groove 7, and the locking piece 9 locks the limit block 8 so that the limit block 8 will not withdraw from the limit groove 7. In this way, the cooperation between the limit block 8 and the limit groove 7 limits the longitudinal displacement of the tooth seat 1 and the tooth tip 4, and the positioning block 6 cooperates with the positioning groove 3 to limit the lateral displacement of the tooth seat 1 and the tooth tip 4. The lateral and longitudinal restrictions on the tooth seat 1 and the tooth tip 4 are related, and the longitudinal restriction needs to be released before the lateral restriction can be released. The impact on the bucket tooth is instantaneous and unidirectional, and will not destroy the restrictions in the two vertical directions, nor will it destroy the overall structure of the bucket tooth.

[0046] Example 2

[0047] This embodiment provides a bucket tooth for an excavator. In addition to including the technical solutions of the above embodiment, it also has the following technical features;

[0048] Please refer to Figure 1 , a hidden groove 10 is formed on the end wall of the second extension block 5 provided at the tooth tip 4. The limiting block 8 is slidably arranged in the hidden groove 10 in the transverse direction. One end of the limiting block 8 can extend out of the hidden groove 10 and then be snapped into the limiting groove 7, and the limiting block 8 can be completely hidden in the hidden groove 10;

[0049] In addition, a pushing groove 11 is formed on the side wall of the hidden groove 10. The pushing groove 11 penetrates through the side wall of the hidden groove 10. A pushing block 12 is provided on the limiting block 8, and the pushing block 12 is slidably arranged in the pushing groove 11; Please refer to Figure 2 , the end of the pushing block 12 is close to the surface of the tooth tip 4. The operator can insert a finger into the pushing groove 11 to apply a force to the pushing block 12, so that the limiting block 8 slides in the hidden groove 10;

[0050] In this embodiment, please refer to Figure 7 , a force-applying inclined surface 1201 is provided at one end of the pushing block 12 away from the limiting block 8, which is convenient for the operator to apply a force to the pushing block 12.

[0051] Example 3

[0052] This embodiment provides a bucket tooth for an excavator. In addition to including the technical solutions of the above embodiment, it also has the following technical features;

[0053] Please refer to Figure 5 , an insertion groove 13 is provided on the tooth seat 1 perpendicular to the opening direction of the limiting groove 7. A retreat groove 14 is formed on the side wall of the limiting groove 7 away from the insertion groove 13. For the three-dimensional structure of the retreat groove 14, please refer to Figure 3 , the retreat groove 14 is a cylindrical groove. For the structure of the insertion groove 13, please refer to Figure 4 , the transverse cross-section of the insertion groove 13 is rectangular;

[0054] Please refer to Figure 3 , the locking member 9 includes a locking block 901 and a connecting rod 902, so as to drive the locking block 901 to adjust the angle on the horizontal plane. The contour of the locking block 901 is adapted to the opening of the insertion groove 13. The locking block 901 can only move longitudinally in the insertion groove, the connecting rod 902 can rotate in the insertion groove 13, the locking block 901 can enter the retreat groove 14, and the locking block 901 can adjust the angle on the horizontal plane in the retreat groove 14. A tool groove connected to a wrench is provided at the end of the connecting rod 902, and the connecting rod 902 can be rotated by connecting a wrench through the tool groove;

[0055] Please refer to Figure 7, a groove 15 is formed at one end of the limit block 8 close to the locking member 9. The groove 15 can allow the connecting rod 902 to pass through. A locking groove 16 for the locking block 901 to engage with is provided on the bottom surface of the limit block 8. When the locking block 901 rotates to be misaligned with the insertion groove 13 and exits from the retraction groove 14, it can engage with the locking groove 16;

[0056] In this embodiment, when assembling the bucket tooth, first insert the locking member 9 into the tooth seat 1 through the insertion groove 13, so that the locking block 901 enters the retraction groove 14, and adjust the horizontal angle of the locking block 901 to the angle that matches the locking groove 16. Then, cooperate the tooth seat 1 with the tooth tip 4, engage the positioning block 6 into the positioning groove 3, and engage the limit block 8 into the limit groove 7. During the process of the limit block 8 entering the limit groove 7, the upper surface of the locking block 901 is lower than the bottom surface of the limit groove 7, so that the limit block 8 can smoothly enter the limit groove 7. During this process, the connecting rod 902 enters the groove 15. When the limit block 8 is installed in place with the limit groove 7, the locking block 901 is opposite to the locking groove 16. At this time, pull the connecting rod 902 outwards, so that the locking block 901 engages with the locking groove 16;

[0057] In this embodiment, please refer to Figure 5 , an extrusion block 17 is provided in the retraction groove 14, and a spring 18 is connected between the extrusion block 17 and the bottom surface of the retraction groove 14; when the locking block 901 enters the retraction groove 14, it will first contact the extrusion block 17. At this time, apply a force to the connecting rod 902 to push the locking block 901 into the retraction groove 14. During this process, the spring 18 will be compressed, and the locking block 901 can completely enter the retraction groove 14. In this way, when the limit block 8 is installed in place with the limit groove 7, remove the force on the connecting rod 902, and the locking block 901 will be pushed out of the retraction groove 14 under the elastic force of the spring 18, so that the locking block 901 engages with the locking groove 16 to lock the limit block 8;

[0058] When it is necessary to disassemble the bucket tooth, first apply a force to the connecting rod 902 to push the locking block 901 into the retraction groove 14, then retract the limit block 8 into the hidden groove 10, and then remove the force on the connecting rod 902, and the positioning block 6 can be withdrawn from the positioning groove 3 to complete the disassembly of the tooth seat 1 and the tooth tip 4.

[0059] Embodiment 4

[0060] This embodiment provides an excavator bucket tooth. In addition to including the technical solutions of the above embodiments, it also has the following technical features;

[0061] Please refer to Figure 3, a receiving groove 19 is formed on the side wall of the insertion groove 13 close to the surface of the tooth base 1. The end of the connecting rod 902 can be completely hidden in the receiving groove 19. In this way, in the assembled state of the bucket tooth, the end of the connecting rod 902 does not protrude beyond the surface of the tooth base 1, and external objects are not likely to interfere with the connecting rod 902, further ensuring the stability of the bucket tooth structure.

[0062] Embodiment 5

[0063] This embodiment provides an excavator bucket tooth. In addition to including the technical solutions of the above embodiments, it also has the following technical features;

[0064] Please refer to Figure 3 , a plurality of protrusions 301 are provided on the side wall of the positioning groove 3. Please refer to Figure 6 , and a recess 601 adapted to these protrusions 301 is provided on the side wall of the positioning block 6;

[0065] In this way, after the positioning block 6 is inserted into the positioning groove 3, the contact area between the positioning block 6 and the positioning groove 3 can be increased, the displacement limiting ability of the tooth base 1 and the tooth tip 4 in the transverse direction can be improved, and the stability of the bucket tooth structure can be further improved.

[0066] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, all of which belong to the protection scope of the present application.

Claims

1. An excavator bucket tooth, characterized in that, Comprising: A tooth base (1), one end of the tooth base (1) is provided with a first extension block (2), and a positioning groove (3) is formed on the first extension block (2); A tooth tip (4), one end of the tooth tip (4) is provided with a second extension block (5), and a positioning block (6) adapted to the positioning groove (3) is provided on the second extension block (5); A limiting groove (7) is formed on the tooth base (1), and the opening direction of the limiting groove (7) is perpendicular to the opening direction of the positioning groove (3); A limiting block (8) is arranged on the tooth tip (4), and the limiting block (8) can be inserted into the limiting groove (7) after the positioning block (6) is inserted into the positioning groove (3); A locking member (9) is arranged on the tooth base (1), and the locking member (9) can lock the limiting block (8) in the limiting groove (7).

2. The excavator bucket tooth according to claim 1, characterized in that: A hidden groove (10) is formed on the end wall of the tooth tip (4), the limiting block (8) is slidably arranged in the hidden groove (10), one end of the limiting block (8) can extend out of the hidden groove (10) and then be inserted into the limiting groove (7), and the limiting block (8) can be completely hidden in the hidden groove (10).

3. The excavator bucket tooth according to claim 2, wherein: A pushing groove (11) is formed on the side wall of the hidden groove (10), the pushing groove (11) penetrates through the side wall of the hidden groove (10), a pushing block (12) is arranged on the limiting block (8), and the pushing block (12) is slidably arranged in the pushing groove (11).

4. The excavator bucket tooth according to claim 3, characterized in that: One end of the pushing block (12) away from the limiting block (8) is provided with a force-applying inclined surface (1201).

5. The excavator bucket tooth according to claim 1, characterized in that: On the tooth base (1), an insertion groove (13) is arranged in a direction perpendicular to the opening direction of the limiting groove (7), a retreat groove (14) is formed on the side wall of the limiting groove (7) away from the insertion groove (13), the locking member (9) includes a locking block (901) and a connecting rod (902), the contour of the locking block (901) is adapted to the opening of the insertion groove (13), the connecting rod (902) can rotate in the insertion groove (13), and the locking block (901) can enter the retreat groove (14); a groove (15) is formed at one end of the limiting block (8) close to the locking member (9), the groove (15) can allow the connecting rod (902) to pass through, and a locking groove (16) for the locking block (901) to be inserted into is arranged on the bottom surface of the limiting block (8). When the locking block (901) rotates to be misaligned with the insertion groove (13) and exits from the retreat groove (14), it can be inserted into the locking groove (16).

6. The excavator bucket tooth according to claim 5, characterized in that: An extrusion block (17) is arranged in the retreat groove (14), and a spring (18) is connected between the extrusion block (17) and the bottom surface of the retreat groove (14).

7. The excavator bucket tooth according to claim 5, characterized in that: A receiving groove (19) is formed on the side wall of the insertion groove (13) close to the surface of the tooth base (1), and the end of the connecting rod (902) can be completely hidden in the receiving groove (19).

8. The bucket tooth of an excavator according to claim 1, characterized in that: A plurality of protrusion portions (301) are provided on the side wall of the positioning groove (3), and a recessed portion (601) adapted to the protrusion portions (301) is provided on the side wall of the positioning block (6).

9. The excavator tooth according to claim 1, wherein: Mounting holes (20) and mounting grooves (21) are formed in the tooth seat (1).

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