Quick-release bucket tooth for construction machinery

Abstract

The utility model discloses an engineering machinery technical field's engineering machinery excavator quick disassembly bucket tooth, including excavator, bucket tooth and tooth root, the tooth root is welded on excavator, and the installation groove is set up in bucket tooth left half, the installation groove is matched with tooth root, and the mounting hole is set up in bucket tooth upper portion, and the fixed post is set up in the mounting hole, and the arc plate fixed connection is in fixed post bottom right side, and the limiting ring fixed mounting is in the mounting hole inner upper portion, and the limiting groove is set up in fixed post side surface middle part, and the eccentric column fixed setting is on tooth root, and the fixed post drives the arc plate counterclockwise to rotate to the eccentric column left side in the process, and the eccentric column is matched with arc plate, makes arc plate left displacement in the rotating process, and drives bucket tooth to move left, eliminates the installation gap between bucket tooth and tooth root, and when the friction torque that the contour of eccentric column and arc plate contact point generates is greater than the external moment, forms the self -locking effect, and need not the sustained force just can keep the clamping state.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a quick-release bucket tooth for an engineering machinery excavator. Background Technology

[0002] As a core and vulnerable component of the excavator's working device, the reliability of the bucket teeth's installation method directly affects the equipment's working efficiency and operating costs. Currently, the connection between the bucket teeth and the tooth holder is generally achieved using a pin installation method (i.e., fixing the bucket teeth and tooth holder with a transverse pin). During operation, excavators are subjected to high-frequency impacts and vibrations, causing the clearance between the pin and the bucket teeth / tooth holder to gradually increase, leading to loosening or even detachment of the pin. Traditional pins require hammering or hydraulic tools for installation / removal, which is difficult to operate in field conditions. Especially when the pin is rusted or deformed, replacement efficiency is extremely low. Some designs use snap rings or locking pins for auxiliary fixing, but these structures are prone to failure and increase the complexity of the parts. The fit tolerance between the pin and the bucket teeth / tooth holder must be strictly controlled. Insufficient machining accuracy (such as hole position deviation) can lead to installation difficulties or localized stress concentration, accelerating wear.

[0003] Therefore, we propose a quick-release bucket tooth for engineering machinery buckets. Utility Model Content

[0004] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-release bucket tooth for an engineering machinery bucket, comprising a bucket, bucket teeth, and tooth roots, wherein the tooth roots are welded to the bucket; The mounting slot is located on the left half of the bucket tooth and mates with the tooth root. Mounting holes are provided on the upper part of the bucket teeth; A fixing post is provided inside the mounting hole; An arc-shaped plate is fixedly connected to the bottom right side of the fixed column; A limiting ring is fixedly installed in the upper part of the mounting hole; A limiting groove is provided in the middle of the side of the fixed column; An eccentric column is fixedly mounted on the tooth root.

[0006] Preferably, the top of the fixing column is provided with a fixing hole, which is a regular hexagon.

[0007] Preferably, the thickness of the tooth root gradually decreases from left to right.

[0008] Preferably, the height of the mounting groove gradually decreases from left to right.

[0009] Preferably, the limiting ring and the limiting groove cooperate with each other, and the limiting ring is slidably connected to the inner wall of the limiting groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: During the process of the fixed column driving the arc plate to rotate counterclockwise to the left of the eccentric column, the eccentric column and the arc plate cooperate to make the arc plate move to the left during the rotation, which drives the bucket teeth to move to the left, eliminating the installation gap between the bucket teeth and the tooth root. The bucket teeth will not be subjected to local stress, thus extending the service life of the bucket teeth. When the frictional torque generated at the contact point between the contour of the eccentric column and the arc plate is greater than the external torque, a self-locking effect is formed, and the clamping state can be maintained without continuous force. The bucket teeth can be installed or removed by the fixed column driving the arc plate to rotate, thus completing the rapid replacement of the bucket teeth. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the bucket of this utility model; Figure 2 This is a schematic diagram of the bucket tooth installation structure of this utility model; Figure 3 This is an enlarged view of section A of this utility model; Figure 4 This is a schematic diagram of the eccentric column installation structure of this utility model; Figure 5 This is an enlarged view of section B of this utility model.

[0012] In the diagram: 1. Bucket; 2. Bucket teeth; 3. Tooth root; 4. Mounting groove; 5. Mounting hole; 6. Fixing column; 7. Arc plate; 8. Limiting ring; 9. Limiting groove; 10. Eccentric column; 11. Fixing hole. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5 This utility model provides a technical solution: a quick-release bucket tooth for an engineering machinery bucket, including a bucket 1, a bucket tooth 2 and a tooth root 3. The tooth root 3 is welded to the bucket 1. An installation groove 4 is provided on the left half of the bucket tooth 2 and cooperates with the tooth root 3. An installation hole 5 is provided on the upper part of the bucket tooth 2. A fixing column 6 is provided in the installation hole 5. An arc plate 7 is fixedly connected to the bottom right side of the fixing column 6. A limiting ring 8 is fixedly installed in the upper part of the installation hole 5. A limiting groove 9 is provided in the middle of the side of the fixing column 6. An eccentric column 10 is fixedly provided on the tooth root 3. When installing the bucket tooth 2, use a tool (Hex wrench) to rotate the fixing post 6 so that the arc plate 7 at the bottom of the fixing post 6 is in the right half of the mounting hole 5. Move the bucket tooth 2 and install it on the tooth root 3. When the arc plate 7 contacts the eccentric post 10, rotate the fixing post 6. During the process of the fixing post 6 driving the arc plate 7 to rotate counterclockwise to the left of the eccentric post 10, the eccentric post 10 and the arc plate 10 cooperate, causing the arc plate 7 to shift to the left during the rotation, which drives the bucket tooth 2 to move to the left, eliminating the installation gap between the bucket tooth 2 and the tooth root 3. When the frictional torque generated at the contact point between the contour of the eccentric post 10 and the arc plate 7 is greater than the external torque, a self-locking effect is formed, and the clamping state can be maintained without continuous force, thus quickly fixing the bucket tooth 2. When disassembling the bucket tooth 2, simply rotate the fixing post 6 in the opposite direction to quickly disassemble the bucket tooth 2. The fixing post 6 drives the arc plate 7 to rotate to install or remove the bucket tooth 2, completing the quick replacement of the bucket tooth 2.

[0015] Reference embodiment: The top of the fixing column 6 is provided with a fixing hole 11, which is a regular hexagon, so that the fixing column 6 can be rotated using a tool (Hex wrench). The fixing column 6 drives the arc plate 7 to rotate and fix the bucket teeth 2.

[0016] Reference embodiment: The thickness of the tooth root 3 gradually decreases from left to right, and the height of the mounting groove 4 gradually decreases from left to right. After the bucket tooth 2 is installed on the tooth root 3, the fixing column 6 drives the arc plate 7 to rotate. The arc plate 7 rotates and cooperates with the eccentric column 10 to remove the position of the rotating arc plate 7. The arc plate 7 is displaced to the left, and at the same time, the fixing column 6 drives the bucket tooth 2 to displace to the left, eliminating the installation gap between the tooth root 3 and the mounting groove 4.

[0017] Reference embodiment: The limiting ring 8 and the limiting groove 9 cooperate with each other, and the limiting ring 8 and the inner wall of the limiting groove 9 are slidably connected. The limiting ring 8 and the limiting groove 9 cooperate to restrict the fixing post 6 within the mounting hole 5. At the same time, the fixing post 6 rotates through the sliding connection between the limiting groove 9 and the limiting ring 8.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release bucket tooth for an engineering machinery bucket, characterized in that, It includes a bucket (1), bucket teeth (2) and tooth roots (3), wherein the tooth roots (3) are welded to the bucket (1); The mounting groove (4) is located on the left half of the bucket tooth (2), and the mounting groove (4) cooperates with the tooth root (3); Mounting hole (5) is provided on the upper part of the bucket tooth (2); A fixing post (6) is provided inside the mounting hole (5); Arc-shaped plate (7) is fixedly connected to the bottom right side of the fixed column (6); A limiting ring (8) is fixedly installed in the upper part of the mounting hole (5); Limiting groove (9) is set in the middle of the side of the fixed column (6); An eccentric column (10) is fixedly mounted on the tooth root (3).

2. The quick-release bucket teeth for an engineering machinery bucket according to claim 1, characterized in that: The top of the fixing column (6) is provided with a fixing hole (11), and the fixing hole (11) is set as a regular hexagon.

3. The quick-release bucket teeth for an engineering machinery bucket according to claim 1, characterized in that: The thickness of the tooth root (3) gradually decreases from left to right.

4. The quick-release bucket teeth for an engineering machinery bucket according to claim 1, characterized in that: The height of the mounting slot (4) gradually decreases from left to right.

5. The quick-release bucket teeth for an engineering machinery bucket according to claim 1, characterized in that: The limiting ring (8) and the limiting groove (9) cooperate with each other, and the limiting ring (8) and the inner wall of the limiting groove (9) are slidably connected.

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