Quick-change excavator bucket

Abstract

The utility model discloses a quick replacement's excavator bucket relates to excavator bucket replacement technical field, including the bucket structure contains bucket main part and connecting lug, and two connecting lug symmetrical fixed mounting are installed on the outer wall of bucket main part, and a plurality of drag reduction ball are rotatably installed in connecting lug, and two connecting lug are rotatably connected with excavator mechanical arm through an installation structure, and the installation structure is composed of arc plate and pin shaft, and two pin shafts are symmetrical fixed mounting in one end of arc plate, and the drag reduction ball is arranged in the first spherical groove of connecting lug, and the drag reduction ball is in contact with pin shaft, avoids the direct contact of pin shaft and the inner wall of axle hole on connecting lug, and when pushing and pulling pin shaft, the contact ball in contact with pin shaft will be rubbed autorotation, and the traditional sliding friction is changed into rolling friction, and the friction resistance when pin shaft is pushed and pulled in axle hole is reduced greatly, and the insertion and extraction operation of pin shaft is more relaxed and labor saving, and the human consumption in the dismounting process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of excavator bucket replacement technology, and in particular to an excavator bucket that can be quickly replaced. Background Technology

[0002] The excavator bucket is the core component that enables excavators to perform digging, loading, and transporting operations. Its structure and performance directly affect the excavator's operating efficiency and applicable scenarios. Depending on the operational requirements, excavator buckets can be divided into various types, such as earthmoving buckets, rock buckets, and crushing buckets, and are widely used in construction, mining, road construction, and agricultural irrigation. During long-term operation, the bucket is prone to problems such as blade damage and bucket deformation due to material wear, impacts, and collisions, requiring regular maintenance or replacement. Furthermore, different types of buckets need to be used for different operational scenarios to ensure operational efficiency. Therefore, the ease of disassembling and replacing the bucket is crucial for the excavator's continuous operating capability.

[0003] Traditionally, the connection between the excavator bucket and the excavator boom relies on two independent pins. The installation method involves creating shaft holes on the connecting lugs on both sides of the bucket and the corresponding connection points on the boom. Two pins are then passed through these holes, creating a rotating connection between the bucket and boom to allow the bucket to tilt during operation. To prevent the pins from dislodging due to vibration, impact, or other external forces during operation, each pin requires a separate locking structure (such as a cotter pin, retaining ring, or locking bolt). However, this installation method presents several inconveniences for bucket disassembly and replacement: disassembly requires first releasing the locking mechanisms on both pins (e.g., pulling out the cotter pin, removing the retaining ring, or bolt), and then pulling each pin out of the shaft hole; installation requires first inserting the two pins into their corresponding shaft holes, adjusting the bucket position, and then installing the locking structures to secure the pins. On the other hand, when pushing and pulling the pin, the pin will come into contact with the shaft hole of the connecting lug and rub against each other. Due to this frictional resistance, pushing and pulling the pin will be difficult and require a lot of effort. As a result, the entire disassembly and assembly process is cumbersome, consumes more time and manpower, and ultimately leads to a slower speed of bucket disassembly and replacement, which seriously affects the operating efficiency of the excavator. Utility Model Content

[0004] The main objective of this invention is to provide a quick-change excavator bucket, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A quick-change excavator bucket includes a bucket structure comprising a bucket body and connecting lugs. Two connecting lugs are symmetrically and fixedly mounted on the outer wall of the bucket body. Several drag-reducing ball bearings are rotatably installed within each connecting lug. The two connecting lugs are rotatably connected to the excavator's robotic arm via an mounting structure. The mounting structure consists of an arc-shaped plate and pins. Two pins are symmetrically and fixedly mounted on one end of the arc-shaped plate. A limiting structure is mounted on each of the two pins. The limiting structure consists of a guide rod, a connecting ball, a fixing ring, a spring, and a sleeve. The connecting ball is fixedly mounted on one end of the guide rod. The fixing ring, spring, and sleeve are all sleeved on the guide rod, with the fixing ring fixedly connected to the guide rod. The spring and sleeve are movably connected to the guide rod. The spring is located between the fixing ring and the sleeve, with both ends of the spring fixedly connected to the fixing ring and the sleeve, respectively.

[0007] Preferably, the two connecting ears on the bucket structure are located on both sides of the excavator's robotic arm, and the connecting ears have two shaft holes, with a plurality of first spherical grooves arranged in a ring on the inner wall of the shaft holes.

[0008] Preferably, the drag-reducing ball bearings are rotatably mounted in the first spherical groove.

[0009] Preferably, the pin on the mounting structure is movably inserted into the shaft holes opened on the two connecting ears, and the pin is simultaneously movably inserted into the hole opened on the excavator's robotic arm. The pin is in contact with the drag-reducing ball bearings, and the arc-shaped plate is located on the outside of one of the connecting ears.

[0010] Preferably, each of the two pins on the mounting structure has a notch at the end furthest from the arc plate, one of the pins has a second spherical groove inside, the second spherical groove communicating with the notch on the pin, and the other pin has a slot on its outer wall, the slot communicating with the notch on the pin.

[0011] Preferably, the connecting ball on the limiting structure is rotatably installed in the second spherical groove, the guide rod is movably installed in the two notched grooves opened on the two pins, and the sleeve is inserted into the slot under the elastic force of the spring.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting drag-reducing balls in the first spherical groove of the connecting ear, the drag-reducing balls contact the pin, avoiding direct contact between the pin and the inner wall of the shaft hole on the connecting ear. When pushing and pulling the pin, the contact balls in contact with the pin will rotate due to friction, transforming traditional sliding friction into rolling friction. This significantly reduces the frictional resistance of the pin when pushing and pulling in the shaft hole, making the insertion and removal of the pin easier and less labor-intensive, reducing manpower consumption during disassembly and assembly. By setting an installation structure consisting of an arc plate and two pins, the bucket structure is connected to the excavator's robotic arm. The installation structure is limited by a limiting structure consisting of a guide rod, connecting ball, fixing ring, spring, and sleeve. Unlike the traditional method, there is no need to set and operate the limiting components for each pin individually. The synchronous limiting and unlocking of the two pins can be completed simply by adjusting the position of the sleeve in the limiting structure and rotating the limiting structure. This simplifies the disassembly and assembly steps, significantly shortens the overall time for replacing the bucket structure, and improves the excavator's operating efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 A magnified view of point A;

[0016] Figure 3 This is a schematic diagram showing the positional relationship between the bucket structure, the mounting structure, and the limiting structure of this utility model.

[0017] Figure 4 This is a schematic diagram showing the positional relationship between the bucket structure and the drag-reducing balls of this utility model.

[0018] Figure 5 This is an exploded view of the installation structure and the limiting structure of this utility model.

[0019] In the diagram: 1. Bucket structure; 2. Excavator arm; 3. Drag-reducing ball bearing; 4. Mounting structure; 5. Limiting structure; 6. Bucket body; 7. Connecting lug; 8. Shaft hole; 9. First spherical groove; 10. Arc plate; 11. Pin; 12. Notch groove; 13. Second spherical groove; 14. Slot; 15. Guide rod; 16. Connecting ball; 17. Retaining ring; 18. Spring; 19. Sleeve. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a quick-change excavator bucket includes a bucket structure 1 comprising a bucket body 6 and connecting ears 7. Two connecting ears 7 are symmetrically and fixedly installed on the outer wall of the bucket body 6. Several drag-reducing ball bearings 3 are rotatably installed inside the connecting ears 7. The two connecting ears 7 are rotatably connected to the excavator arm 2 via a mounting structure 4. The mounting structure 4 consists of an arc-shaped plate 10 and pins 11. Two pins 11 are symmetrically and fixedly installed at one end of the arc-shaped plate 10. A limiting structure 5 is installed on each of the two pins 11. The structure 5 consists of a guide rod 15, a connecting ball 16, a fixing ring 17, a spring 18, and a sleeve 19. The connecting ball 16 is fixedly installed at one end of the guide rod 15. The fixing ring 17, spring 18, and sleeve 19 are all sleeved on the guide rod 15, with the fixing ring 17 fixedly connected to the guide rod 15. The spring 18 and sleeve 19 are movably connected to the guide rod 15. The spring 18 is located between the fixing ring 17 and the sleeve 19, and both ends of the spring 18 are fixedly connected to the fixing ring 17 and the sleeve 19, respectively. The connection is achieved by setting a first spherical groove 9 in the connecting ear 7. The drag-reducing ball bearing 3 contacts the pin 11, preventing direct contact between the pin 11 and the inner wall of the shaft hole 8 on the connecting lug 7. When the pin 11 is pushed or pulled, the drag-reducing ball bearing 3 in contact with the pin 11 will rotate due to friction, transforming traditional sliding friction into rolling friction. This significantly reduces the frictional resistance of the pin 11 when it is pushed or pulled in the shaft hole 8, making the insertion and removal of the pin 11 easier and less strenuous, and reducing the manpower consumption during disassembly and assembly. The bucket structure is further enhanced by setting up an installation structure 4 consisting of an arc plate 10 and two pins 11. 1. Connected to the excavator's robotic arm 2, the limiting structure 5, consisting of a guide rod 15, a connecting ball 16, a fixing ring 17, a spring 18, and a sleeve 19, limits the installation structure 4. Unlike traditional methods, there is no need to set and operate limiting components for each pin 11 individually. The two pins 11 can be simultaneously limited and unlocked simply by adjusting the position of the sleeve 19 in the limiting structure 5 and rotating the limiting structure 5. This simplifies the disassembly and assembly steps, significantly shortens the overall replacement time of the bucket structure 1, and improves the excavator's operating efficiency.

[0022] Specifically, the two connecting ears 7 on the bucket structure 1 are located on both sides of the excavator arm 2. Two shaft holes 8 are formed on the connecting ears 7. Several first spherical grooves 9 are annularly formed on the inner wall of the shaft holes 8. Drag-reducing balls 3 are rotatably installed in the first spherical grooves 9. The pin 11 on the mounting structure 4 is movably inserted into the shaft holes 8 on the two connecting ears 7. The pin 11 is also movably inserted into the hole on the excavator arm 2, contacting the drag-reducing balls 3. An arc-shaped plate 10 is located outside one of the connecting ears 7. A notch 12 is formed at the end of each of the two pins 11 on the mounting structure 4 away from the arc-shaped plate 10. A second spherical groove 12 is formed inside one of the pins 11. The second spherical groove 13 is connected to the notch 12 on the pin 11. The outer wall of the other pin 11 is provided with a slot 14, which is connected to the notch 12 on the pin 11. The connecting ball 16 on the limiting structure 5 is rotatably installed in the second spherical groove 13. The guide rod 15 is movably installed in the two notches 12 on the two pins 11. The sleeve 19 is inserted into the slot 14 under the elastic force of the spring 18. When using the quick-change excavator bucket, the excavator arm 2 drives the bucket body 6 of the bucket structure 1 to perform digging, loading and other operations during the operation. At this time, the excavator arm 2 can flexibly rotate around the pin 11.

[0023] When the bucket structure 1 needs to be replaced, the disassembly operation only requires pulling the sleeve 19 of the limiting structure 5 to compress the spring 18 and disengage it from the slot 14 on the corresponding pin 11. Then, rotate the limiting structure 5 around the connecting ball 16 on it to keep it parallel to the pin 11 with the second spherical groove 13. Then, directly grasp the arc plate 10 and use the arc plate 10 to pull the two pins 11 out simultaneously from the shaft hole 8 on the connecting ear 7 and the hole on the excavator arm 2. At this time, the drag-reducing ball 3 will contact the pin 11. As the pin 11 moves, the drag-reducing ball 3 rotates in the first spherical groove 9. During this process, the limiting structure 5 will also pass through the shaft hole 8 on the connecting ear 7 and the hole on the excavator arm 2. Then, the old bucket structure 1 can be removed. When installing the new bucket structure 1, first place the connecting ear 7 of the new bucket structure 1 on both sides of the excavator arm 2, ensuring that the shaft hole 8 on the connecting ear 7 is aligned with the hole on the excavator arm 2. Then, in the limiting... With the positioning structure 5 parallel to the pin 11 with the second spherical groove 13, the two pins 11 are simultaneously inserted into the shaft hole 8 on the connecting ear 7 and the hole on the excavator arm 2 through the arc plate 10. At this time, the drag-reducing ball 3 will contact the pin 11. As the pin 11 moves, the drag-reducing ball 3 rotates in the first spherical groove 9. During this process, the limiting structure 5 will also pass through the shaft hole 8 on the connecting ear 7 and the hole on the excavator arm 2. Then, the limiting structure 5 is rotated with the connecting ball 16 on it as the center point. At the same time, the sleeve 19 is pushed to compress the spring 18, so that the guide rod 15 of the limiting structure 5 is simultaneously in the two notch grooves 12 on the two pins 11. Finally, the sleeve 19 is released, so that the sleeve 19 is automatically inserted back into the slot 14 under the elastic force of the spring 18 restoring its deformation, thereby completing the limiting of the pin 11. Finally, the new bucket structure 1 and the excavator arm 2 are stably connected, and the replacement of the bucket structure 1 is completed.

[0024] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A quick-change excavator bucket, comprising a bucket structure (1) including a bucket body (6) and connecting ears (7), the connecting ears (7) being two and symmetrically fixedly installed on the outer wall of the bucket body (6), characterized in that: Several drag-reducing ball bearings (3) are rotatably installed inside the connecting lug (7). The two connecting lugs (7) are rotatably connected to the excavator arm (2) through a mounting structure (4). The mounting structure (4) consists of an arc-shaped plate (10) and pins (11). There are two pins (11) which are symmetrically fixed at one end of the arc-shaped plate (10). A limiting structure (5) is installed on the two pins (11). The limiting structure (5) consists of a guide rod (15), a connecting ball (16), a fixing ring (17), and a spring (18). The system consists of a sleeve (19), a connecting ball (16) fixedly installed at one end of a guide rod (15), a fixing ring (17), a spring (18) and a sleeve (19) all sleeved on the guide rod (15), and the fixing ring (17) is fixedly connected to the guide rod (15), the spring (18) and the sleeve (19) are movably connected to the guide rod (15), the spring (18) is located between the fixing ring (17) and the sleeve (19), and the two ends of the spring (18) are fixedly connected to the fixing ring (17) and the sleeve (19) respectively.

2. A quickly replaceable excavator bucket according to claim 1, characterized in that: The two connecting ears (7) on the bucket structure (1) are located on both sides of the excavator arm (2). The connecting ears (7) have two shaft holes (8). The inner wall of the shaft holes (8) is provided with a number of first spherical grooves (9) in a ring shape.

3. A quickly replaceable excavator bucket according to claim 2, characterized in that: The drag-reducing ball (3) is rotatably installed in the first spherical groove (9).

4. A quickly replaceable excavator bucket according to claim 3, characterized in that: The pin (11) on the mounting structure (4) is movably inserted into the shaft hole (8) opened on the two connecting ears (7). The pin (11) is also movably inserted into the hole opened on the excavator arm (2). The pin (11) is in contact with the drag-reducing ball (3). The arc plate (10) is located outside one of the connecting ears (7).

5. A quickly replaceable excavator bucket according to claim 4, characterized in that: A notch (12) is provided at the end of each of the two pins (11) on the mounting structure (4) away from the arc plate (10). A second spherical groove (13) is provided in one of the pins (11), and the second spherical groove (13) is connected to the notch (12) on the pin (11). A slot (14) is provided on the outer wall of the other pin (11), and the slot (14) is connected to the notch (12) on the pin (11).

6. A quickly replaceable excavator bucket according to claim 5, characterized in that: The connecting ball (16) on the limiting structure (5) is rotatably installed in the second spherical groove (13), the guide rod (15) is movably installed in the two notch grooves (12) opened on the two pins (11), and the sleeve (19) is inserted into the slot (14) under the elastic force of the spring (18).

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