A quick replacement device for excavator bucket teeth

Abstract

The utility model discloses a quick replacement device of excavator bucket tooth, including machine bucket, the front side of machine bucket is provided with the installation tooth, and the tooth is opposite installation tooth and is provided with the plug -in slot, the upper side of tooth is provided with first slot body, the surface of installation tooth is opposite first slot body and is provided with second slot body, be provided with internal thread in first slot body, be screwed in thread column in first slot body and second slot body, the bottom of second slot body is provided with first chamber, first chamber with second slot body intercommunication, be provided with transmission mechanism in first chamber, one end of transmission mechanism is contacted or separates with thread column, and the other end is connected with locking block, the inside of plug -in slot is opposite locking block and is provided with second chamber, adopt this design, need only in the process of vertical installation thread column, can realize horizontal fixed simultaneously, need not between the narrow installation tooth gap and carry out the bolt fixing.

Description

Technical Field

[0001] This utility model relates to a bucket tooth replacement device, specifically a quick bucket tooth replacement device for excavators, and belongs to the field of excavator parts installation technology. Background Technology

[0002] Bucket teeth are among the fastest-wearing components of an excavator, requiring frequent replacement. Installing bucket teeth typically requires both lateral and longitudinal fixation to prevent horizontal and vertical displacement during operation. However, due to the small spacing between each mounting tooth, lateral fixation is extremely inconvenient. If only bolts are used for longitudinal fixation from the top of the mounting tooth downwards, the bucket teeth are prone to horizontal rotation, compromising stability. For example, a bucket tooth replacement method disclosed in Chinese Patent Document CN206706886U requires the fixing pin 7 to be inserted laterally between two adjacent mounting teeth, which is extremely inconvenient. Therefore, there is a need to design a bucket tooth structure that can simultaneously perform vertical bolt fixation and horizontal locking to improve the ease of assembly and disassembly. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a quick-change device for excavator bucket teeth, which is convenient and quick to disassemble and assemble, has a simple and reasonable structure, and is stable and firm to install.

[0004] The technical solution adopted by this utility model is as follows: a quick-change device for excavator bucket teeth, including a bucket; the front side of the bucket is provided with mounting teeth, and the bucket teeth are provided with insertion grooves relative to the mounting teeth; a first groove is provided on the upper side of the bucket teeth; a second groove is provided on the surface of the mounting teeth relative to the first groove; an internal thread is provided in the first groove; a threaded post is screwed into the first groove and the second groove; a first chamber is provided at the bottom of the second groove; the first chamber is connected to the second groove; a transmission mechanism is provided in the first chamber; one end of the transmission mechanism is in contact with or separate from the threaded post, and the other end is connected to a locking block; a second chamber is provided on the inner side of the insertion groove relative to the locking block.

[0005] Furthermore, the transmission mechanism includes a lifting column; the lifting column is located in the second groove; first protrusions are provided on both sides of the lifting column; a first guide groove is provided on the inner wall of the second groove relative to the first protrusions; the bottom end of the lifting column is wedge-shaped; the top end of the lifting column is in contact with or separate from the threaded column.

[0006] Furthermore, the transmission mechanism also includes a translation column; the translation column is disposed in the first chamber; second protrusions are provided on both sides of the translation column; a second guide groove is provided on the side wall of the first chamber opposite to the second protrusion; a spring is also provided in the second guide groove; the spring is connected to the second protrusion.

[0007] Furthermore, push blocks are provided on the upper and lower sides of the translation column; slots are provided on the upper and lower sides of the first chamber opposite to the push blocks; the mounting teeth are provided with vertical grooves opposite to the locking blocks; the slots are connected to the vertical grooves.

[0008] Furthermore, the locking block is connected to the vertical groove by a spring; the bottom of the locking block is wedge-shaped and contacts or separates from the push block.

[0009] Furthermore, the upper end of the locking block is inserted into the second chamber or located in the vertical groove.

[0010] This invention offers the following advantages: During bucket tooth installation, simply align the insertion slot with the mounting tooth and insert it. After insertion, screw the threaded post into the first groove. The threaded post tightens within the first groove and continues to descend into the second groove during rotation. The threaded post, positioned within both the first and second grooves, secures the verticality of the bucket tooth. Simultaneously, as the threaded post descends, it drives the lifting column to descend as well, which in turn drives the translation column to move horizontally within the first chamber. This horizontal movement of the translation column causes the push block to move within the slot, eventually contacting the locking block. This causes the locking block to unfold outwards and insert into the second chamber, thus fixing the horizontal position of the bucket tooth and preventing horizontal movement (such as swaying around the threaded post). This design achieves simultaneous horizontal fixation during the vertical installation of the threaded post, eliminating the need for pin fixation between the narrow mounting teeth. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is an enlarged schematic diagram of part A.

[0013] Figure 3 This is an enlarged schematic diagram of part B.

[0014] Wherein: 1 is the bucket, 2 is the mounting tooth, 2-1 is the second groove, 3 is the bucket tooth, 3-1 is the insertion groove, 3-2 is the first groove, 3-3 is the second chamber, 4 is the threaded column, 5 is the first chamber, 6 is the locking block, 7 is the lifting column, 7-1 is the first protrusion, 8 is the translation column, 8-1 is the second protrusion, 9 is the spring, 10 is the slot, 11 is the vertical groove, and 12 is the push block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] See Figures 1-2 This application discloses a quick-change device for excavator bucket teeth, including a bucket 1; the front side of the bucket 1 is provided with mounting teeth 2, and bucket teeth 3 are provided with insertion grooves 3-1 relative to the mounting teeth 2; the upper side of the bucket teeth 3 is provided with a first groove 3-2; the surface of the mounting teeth 2 is provided with a second groove 2-1 relative to the first groove 3-2; the first groove 3-2 is provided with internal threads; a threaded post 4 is screwed into the first groove 3-2 and the second groove 2-1; the bottom of the second groove 2-1 is provided with a first chamber 5; the first chamber 5 is connected to the second groove 2-1; a transmission mechanism is provided in the first chamber 5; one end of the transmission mechanism is in contact with or separate from the threaded post 4, and the other end is connected to a locking block 6; the inner side of the insertion groove 3-1 is provided with a second chamber 3-3 relative to the locking block 6.

[0017] Furthermore, the transmission mechanism includes a lifting column 7; the lifting column is located inside the second groove 2-1; the lifting column 7 has first protrusions 7-1 on both sides; the inner wall of the second groove 2-1 has a first guide groove relative to the first protrusions 7-1; the bottom end of the lifting column 7 is wedge-shaped; the top end of the lifting column 7 is in contact with or separate from the threaded column 4.

[0018] Furthermore, the transmission mechanism also includes a translation column 8; the translation column 8 is disposed in the first chamber 5; second protrusions 8-1 are provided on both sides of the translation column 8; a second guide groove is provided on the side wall of the first chamber 5 opposite to the second protrusions 8-1; a spring 9 is also provided in the second guide groove; the spring 9 is connected to the second protrusions 8-1.

[0019] Furthermore, push blocks 12 are provided on the upper and lower sides of the translation column 8; slots 10 are provided on the upper and lower sides of the first chamber 5 opposite to the push blocks 9; the mounting teeth 2 are provided with vertical grooves 11 opposite to the locking blocks 6; the slots 10 and the vertical grooves 11 are connected.

[0020] Furthermore, the locking block 6 is connected to the vertical groove 11 by a spring; the bottom of the locking block 11 is wedge-shaped and contacts or separates from the push block 12.

[0021] Furthermore, the upper end of the locking block 6 is inserted into the second chamber 3-3 or located in the vertical groove 11.

[0022] Working principle: After the mounting tooth 2 is aligned and inserted into the insertion slot 3-1, the threaded column 4 is screwed into the first slot 3-2. As the threaded column 4 rotates, it gradually descends, and its bottom enters the second slot 2-1, exerting downward pressure on the top of the lifting column 7, causing the lifting column 7 to move downward. Due to the downward movement of the lifting column 7, its wedge-shaped end at the bottom will push the translation column 8 to overcome the elastic force of the spring 9 and move horizontally in the first chamber 5, while the push block 9 moves synchronously in the slot 10. When the push block 9 reaches the position of the locking block 6, it will squeeze against the wedge-shaped end of the locking block 6, causing the locking block 6 to move outward and insert into the second chamber 3-3. After the locking block 6 is in the second chamber 3-3, it can ensure the horizontal fixation between the bucket tooth 3 and the mounting tooth 2, and the bucket tooth 3 will not rotate horizontally. Using this method, it is not necessary to lock the horizontal position of the bucket tooth 3 with a pin in the gap between the mounting teeth 2.

[0023] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A quick-change device for excavator bucket teeth, comprising a bucket (1); wherein mounting teeth (2) are provided on the front side of the bucket (1), characterized in that: The bucket tooth (3) has a slot (3-1) relative to the mounting tooth (2); a first groove (3-2) is provided on the upper side of the bucket tooth (3); a second groove (2-1) is provided on the surface of the mounting tooth (2) relative to the first groove (3-2); an internal thread is provided in the first groove (3-2); a threaded post (4) is screwed into the first groove (3-2) and the second groove (2-1); a first chamber (5) is provided at the bottom of the second groove (2-1); the first chamber (5) is connected to the second groove (2-1); a transmission mechanism is provided in the first chamber (5); one end of the transmission mechanism is in contact with or separate from the threaded post (4), and the other end is connected to the locking block (6); a second chamber (3-3) is provided on the inner side of the slot (3-1) relative to the locking block (6).

2. The excavator bucket tooth quick-change device according to claim 1, characterized in that: The transmission mechanism includes a lifting column (7); the lifting column is located in the second groove (2-1); the lifting column (7) has a first protrusion (7-1) on both sides; the inner wall of the second groove (2-1) has a first guide groove relative to the first protrusion (7-1); the bottom end of the lifting column (7) is wedge-shaped; the top end of the lifting column (7) is in contact with or separate from the threaded column (4).

3. The excavator bucket tooth quick-change device according to claim 2, characterized in that: The transmission mechanism further includes a translation column (8); the translation column (8) is disposed in the first chamber (5); the translation column (8) has second protrusions (8-1) on both sides; a second guide groove is provided on the side wall of the first chamber (5) opposite to the second protrusion (8-1); a spring (9) is also provided in the second guide groove; the spring (9) is connected to the second protrusion (8-1).

4. The excavator bucket tooth quick-change device according to claim 3, characterized in that: Push blocks (12) are provided on the upper and lower sides of the translation column (8); slots (10) are provided on the upper and lower sides of the first chamber (5) opposite to the push blocks (12); the mounting teeth (2) are provided with vertical grooves (11) opposite to the locking block (6); the slots (10) and the vertical grooves (11) are connected.

5. The excavator bucket tooth quick-change device according to claim 4, characterized in that: The locking block (6) is connected to the vertical groove (11) by a spring; the bottom of the locking block (6) is wedge-shaped and contacts or separates from the push block (12).

6. The excavator bucket tooth quick-change device according to claim 5, characterized in that: The upper end of the locking block (6) is inserted into the second chamber (3-3) or located in the vertical groove (11).

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