Excavator bucket quick-change connecting device

Abstract

The utility model belongs to the technical field of excavators, and relates to an excavator bucket quick-change connecting device which comprises an excavator bucket body and a conversion connector, a first fixing shaft and a second fixing shaft are fixedly arranged at the end of the excavator bucket body, and the conversion connector is in a cover shape. A first fixing groove and a second fixing groove are formed in the two ends of an opening of the adapter respectively, the first fixing shaft is movably arranged in the first fixing groove, the second fixing shaft is movably arranged in the second fixing groove, a clamping plate is rotationally arranged at the second fixing groove, and the second fixing shaft is movably arranged on one side of the clamping plate. And a first fixing piece and a second fixing piece are arranged in the conversion connector in a sliding mode, the first fixing piece is matched with the first fixing shaft in an abutting mode, and the second fixing piece is matched with the clamping plate in a sliding mode. The fixing device has the advantages that the first fixing shaft and the second fixing shaft are fixed together through the back-to-back sliding of the sliding plate and the clamping plate, multiple operations are not needed, and the operation is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of excavator technology and relates to a quick-change connection device for excavator buckets. Background Technology

[0002] Excavators use their buckets to excavate materials above or below the machine's bearing surface. During operation, different types of buckets need to be changed depending on the working environment. For example, standard buckets are suitable for excavating and loading clay, sand, and other earth and rock materials, while rock buckets are suitable for heavy-duty environments such as excavating hard rock and moderately hard rock. Therefore, a quick-change bucket connection device for excavators is needed.

[0003] A quick conversion adapter for excavator buckets disclosed in Chinese patent CN221989422U includes two symmetrical bucket connecting seats fixedly connected to the top of the bucket body. A left fixed shaft and a right fixed shaft are fixedly connected to both sides of the bucket connecting seats. A conversion adapter frame is provided above the bucket connecting seats. A left connecting hole and a right connecting hole are respectively opened on both sides of the conversion adapter frame. The left connecting hole and the right connecting hole cooperate with the left fixed shaft and the right fixed shaft, respectively.

[0004] When installing this adapter onto the bucket body, the hydraulic cylinder is first activated to secure the left fixed shaft, and then the adapter frame is controlled to rotate relative to the right fixed shaft. This requires separate operations to secure both fixed shafts, making the process rather cumbersome.

[0005] To address the aforementioned problems, this utility model proposes a quick-change connection device for excavator buckets. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a quick-change connection device for excavator buckets.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a bucket body and a conversion joint, wherein a first fixed shaft and a second fixed shaft are fixedly provided at the end of the bucket body, and the first fixed shaft and the second fixed shaft are parallel.

[0008] The adapter is cover-shaped, with a first fixing groove and a second fixing groove respectively opened at both ends of the adapter opening. The first fixing shaft is movably disposed in the first fixing groove, and the second fixing shaft is movably disposed in the second fixing groove. A retaining plate is rotatably disposed at the second fixing groove, and the second fixing shaft is movably disposed on one side of the retaining plate.

[0009] The adapter is internally slidably provided with a first fixing member and a second fixing member. The first fixing member abuts against the first fixing shaft, and the second fixing member slides against the clamping plate.

[0010] The adapter is equipped with a drive assembly, which drives the first fixing member and the second fixing member to slide towards each other or away from each other.

[0011] Furthermore, two connecting seats are symmetrically fixedly connected to the end of the bucket body, and the first fixed shaft and the second fixed shaft are both fixedly connected between the two connecting seats. The conversion joint is slidably disposed between the two connecting seats.

[0012] Furthermore, the first fixing member includes a clamp plate, which is slidably connected to the inside of the adapter. A slot is provided on one side of the end of the clamp plate. The slot, the first fixing slot, and the second fixing slot are all arc-shaped. The slot is movably engaged with the first fixing shaft.

[0013] The adapter has two slide rods symmetrically fixedly connected inside, and the end of the clamp plate away from the slot is slidably sleeved on the two slide rods.

[0014] Furthermore, the adapter is internally fixedly connected to a fixed post, and the clamping plate is Z-shaped, with the middle part of the clamping plate rotatably sleeved on the fixed post;

[0015] Both ends of the fixed column are fitted with torsion springs, and the clamping plate is located between the two torsion springs. One end of the torsion spring is fixedly connected to the inner wall of the conversion joint, and the other end of the torsion spring is fixedly connected to the side of the clamping plate.

[0016] Furthermore, the second fixing member includes a sliding plate, which is slidably connected to the inside of the adapter and slidably sleeved on two sliding rods;

[0017] The end of the slide plate slides into the side of the middle part of the card plate, and the end of the slide plate that mates with the card plate is provided with a bevel.

[0018] Furthermore, the drive assembly includes a dual-axis motor, which is fixedly connected to the middle of the adapter. A first lead screw is fixedly connected to the end of one output shaft of the dual-axis motor, and the other end of the first lead screw is rotatably connected to the inner wall of the adapter. A second lead screw is fixedly connected to the end of the other output shaft of the dual-axis motor, and the other end of the second lead screw is rotatably connected to the inner wall of the adapter.

[0019] The first lead screw and the second lead screw are both parallel to the slide rod, and the first lead screw and the second lead screw are both located between the two slide rods. The clamping plate is threaded on the second lead screw, and the sliding plate is threaded on the first lead screw.

[0020] Furthermore, the adapter has two mounting holes, one of which houses a first connecting shaft, and the other has a second connecting shaft.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The excavator bucket quick-change connection device is equipped with a sliding plate and a clamping plate. After the second fixed shaft is clamped in the second fixed groove and the first fixed shaft is clamped in the first fixed groove, the dual-axis motor drives the first lead screw and the second lead screw to rotate, causing the sliding plate and the clamping plate to slide back and forth. The clamping plate moves to the first fixed groove to clamp the first fixed shaft, and the sliding plate moves to the end of the clamping plate to restrict the rotation of the clamping plate, so that the clamping plate limits the second fixed shaft, realizing the installation of the bucket body. It eliminates the need for multiple operations to fix the first fixed shaft and the second fixed shaft, making the operation more convenient.

[0023] 2. The excavator bucket quick-change connection device is equipped with a clamping plate, which is Z-shaped. By moving the bucket body, the second fixed shaft presses against one end of the clamping plate in the second fixed groove, causing one end of the clamping plate to rotate into the second fixed groove. This moves the second fixed shaft into the second fixed groove, while the clamping plate rotates to the outside of the second fixed groove under the action of the torsion spring, positioning the second fixed shaft in the second fixed groove for subsequent fixing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the bucket body in this utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the adapter in this utility model;

[0027] Figure 4 This is a schematic diagram of the card plate in this utility model.

[0028] In the diagram: 1. Bucket body; 2. Connecting seat; 3. First fixed shaft; 4. Second fixed shaft; 5. First connecting shaft; 6. Second connecting shaft; 7. Adapter joint; 8. Clamping plate; 9. Card plate; 10. First lead screw; 11. Slide plate; 12. Dual-axis motor; 13. Slide rod; 14. Second lead screw; 15. Torsion spring; 16. Fixed column; 17. First fixed groove; 18. Second fixed groove. Detailed Implementation

[0029] 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.

[0030] like Figures 1-4As shown, the technical solution adopted by this utility model is as follows: A quick-change connection device for excavator buckets includes a bucket body 1 and a conversion joint 7. A first fixed shaft 3 and a second fixed shaft 4 are fixedly provided at the end of the bucket body 1, and the first fixed shaft 3 and the second fixed shaft 4 are parallel.

[0031] Two connecting seats 2 are symmetrically fixedly connected to the end of the bucket body 1. The first fixed shaft 3 and the second fixed shaft 4 are both fixedly connected between the two connecting seats 2. The adapter 7 is slidably disposed between the two connecting seats 2. The bucket body 1 is positioned on one side of the adapter 7 by the two connecting seats 2 to facilitate subsequent installation.

[0032] The adapter 7 has two mounting holes. A first connecting shaft 5 is housed inside one mounting hole, and a second connecting shaft 6 is mounted in the other mounting hole. The adapter 7 can be secured to the bucket mounting area of ​​the excavator using the first connecting shaft 5 and the second connecting shaft 6 through these two mounting holes.

[0033] The adapter 7 is cover-shaped, with a first fixing groove 17 and a second fixing groove 18 respectively at both ends of the opening. The first fixing shaft 3 is movably disposed in the first fixing groove 17, and the second fixing shaft 4 is movably disposed in the second fixing groove 18. A retaining plate 9 is rotatably disposed at the second fixing groove 18, and the second fixing shaft 4 is movably disposed on one side of the retaining plate 9. The retaining plate 9 positions the second fixing shaft 4 within the second fixing groove 18.

[0034] The adapter 7 has a first fixing member and a second fixing member that are slidably arranged inside. The first fixing member abuts against the first fixing shaft 3, and the second fixing member slides against the clamping plate 9.

[0035] The first fixing component includes a clamping plate 8, which is slidably connected inside the adapter 7. A slot is provided on one side of the end of the clamping plate 8. The slot, the first fixing slot 17, and the second fixing slot 18 are all arc-shaped. The slot is movably engaged with the first fixing shaft 3. The first fixing shaft 3 is fixed by the cooperation between the slot and the first fixing slot 17.

[0036] The adapter 7 has two slide rods 13 symmetrically fixedly connected inside. The end of the clamping plate 8 away from the slot is slidably sleeved on the two slide rods 13. The two clamping plates 8 are used to position the slide rods 13.

[0037] The adapter 7 has a fixed internal connection with a fixed post 16, which is perpendicular to the slide rod 13. The clamping plate 9 is Z-shaped, and the middle part of the clamping plate 9 is rotatably sleeved on the fixed post 16.

[0038] Both ends of the fixing post 16 are fitted with torsion springs 15, and the clamping plate 9 is located between the two torsion springs 15. One end of the torsion spring 15 is fixedly connected to the inner wall of the adapter 7, and the other end of the torsion spring 15 is fixedly connected to the side of the clamping plate 9. In the initial state, the torsion spring 15 drives the clamping plate 9 to rotate to the second fixing groove 18.

[0039] The second fixing component includes a slide plate 11, which is slidably connected to the inside of the adapter 7 and slidably mounted on two slide rods 13. This allows both the slide plate 11 and the clamping plate 8 to slide along the slide rods 13.

[0040] The end of the slide plate 11 slides into the side of the middle part of the clamping plate 9, and the end of the slide plate 11 that mates with the clamping plate 9 is provided with a slope. The slope facilitates the rotation of the clamping plate 9.

[0041] The adapter 7 is equipped with a drive assembly, which drives the first fixing member and the second fixing member to slide towards each other or away from each other.

[0042] The drive assembly includes a dual-axis motor 12, which is fixedly connected to the center of the adapter 7. A first lead screw 10 is fixedly connected to the end of one output shaft of the dual-axis motor 12, and the other end of the first lead screw 10 is rotatably connected to the inner wall of the adapter 7. A second lead screw 14 is fixedly connected to the end of the other output shaft of the dual-axis motor 12, and the other end of the second lead screw 14 is rotatably connected to the inner wall of the adapter 7. The dual-axis motor 12 is a motor with two protruding shafts and is a conventional product. The dual-axis motor 12 is capable of driving the first lead screw 10 and the second lead screw 14 to rotate synchronously.

[0043] Both the first lead screw 10 and the second lead screw 14 are parallel to the slide rod 13, and both are located between the two slide rods 13. The clamping plate 8 is threaded onto the second lead screw 14, and rotation of the second lead screw 14 will drive the clamping plate 8 to slide on the slide rod 13. The sliding plate 11 is threaded onto the first lead screw 10, and rotation of the first lead screw 10 will drive the sliding plate 11 to slide on the slide rod 13.

[0044] Working principle:

[0045] In use, the adapter 7 is fixed to the bucket connection on the excavator via the first connecting shaft 5 and the second connecting shaft 6.

[0046] Move the bucket body 1 so that both connecting seats 2 are located outside the adapter 7. Push the bucket body 1 to move the second fixed shaft 4 towards the second fixed groove 18.

[0047] The second fixed shaft 4 presses against one end of the clamping plate 9, causing the end of the clamping plate 9 to rotate into the second fixed groove 18, while the torsion spring 15 twists. After the second fixed shaft 4 moves past the clamping plate 9 into the second fixed groove 18, the torsion spring 15 drives the clamping plate 9 to rotate to the outside of the second fixed groove 18 until the clamping plate 9 returns to its initial state. At this point, the second fixed shaft 4 is positioned within the second fixed groove 18.

[0048] Rotate the bucket body 1 to move the first fixed shaft 3 into the first fixed groove 17. At this time, the bucket body 1 is positioned on the adapter 7.

[0049] Start the dual-axis motor 12. The two output shafts of the dual-axis motor 12 drive the first lead screw 10 and the second lead screw 14 to rotate. The first lead screw 10 drives the slide plate 11 to slide on the two slide rods 13, and the second lead screw 14 drives the clamping plate 8 to slide on the two slide rods 13.

[0050] The slide plate 11 and the clamping plate 8 move in opposite directions, and the slide plate 11 rotates towards the other end of the clamping plate 9, so that the slide plate 11 abuts against the clamping plate 9, preventing the end of the clamping plate 9 located in the second fixing groove 18 from rotating away from the second fixing groove 18. This limits the second fixing shaft 4.

[0051] The clamping plate 8 moves towards the first fixing groove 17, so that the slot at the end of the clamping plate 8 engages with the first fixing shaft 3, thereby fixing the first fixing shaft 3. The bucket body 1 is then fixed onto the adapter 7, achieving a quick connection to the bucket body 1.

[0052] During disassembly, the dual-axis motor 12 drives the slide plate 11 and the clamping plate 8 to slide towards each other, causing the clamping plate 8 to move away from the first fixed shaft 3. With the slide plate 11 no longer restricting the rotation of the clamping plate 9, the second fixed shaft 4 can then push the clamping plate 9 to rotate, thus removing the second fixed shaft 4.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-change connection device for excavator buckets, characterized in that: It includes a bucket body (1) and a conversion joint (7). The bucket body (1) is fixedly provided with a first fixed shaft (3) and a second fixed shaft (4) at its end. The first fixed shaft (3) and the second fixed shaft (4) are parallel. The adapter (7) is in the shape of a cover. The two ends of the opening of the adapter (7) are respectively provided with a first fixing groove (17) and a second fixing groove (18). The first fixing shaft (3) is movably disposed in the first fixing groove (17), and the second fixing shaft (4) is movably disposed in the second fixing groove (18). A clamping plate (9) is rotatably disposed at the second fixing groove (18), and the second fixing shaft (4) is movably disposed on one side of the clamping plate (9). The adapter (7) is internally slidably provided with a first fixing member and a second fixing member. The first fixing member abuts against the first fixing shaft (3), and the second fixing member slides against the clamping plate (9). The adapter (7) is provided with a drive assembly, which drives the first fixing member and the second fixing member to slide towards each other or away from each other.

2. The quick-change connection device for excavator buckets according to claim 1, characterized in that: The bucket body (1) has two connecting seats (2) symmetrically fixedly connected to its end. The first fixed shaft (3) and the second fixed shaft (4) are both fixedly connected between the two connecting seats (2). The conversion joint (7) is slidably disposed between the two connecting seats (2).

3. The quick-change connection device for excavator buckets according to claim 1, characterized in that: The first fixing member includes a clamp (8), which is slidably connected to the inside of the adapter (7). A slot is provided on one side of the end of the clamp (8). The slot, the first fixing slot (17), and the second fixing slot (18) are all arc-shaped. The slot is movably engaged with the first fixing shaft (3). The adapter (7) has two slide rods (13) symmetrically fixedly connected inside, and the end of the clamp (8) away from the slot is slidably sleeved on the two slide rods (13).

4. The quick-change connection device for excavator buckets according to claim 3, characterized in that: The adapter (7) is internally fixedly connected to a fixed post (16), and the clamping plate (9) is set in a Z-shape, with the middle part of the clamping plate (9) rotatably sleeved on the fixed post (16); Both ends of the fixed column (16) are fitted with torsion springs (15), and the clamping plate (9) is located between the two torsion springs (15). One end of the torsion spring (15) is fixedly connected to the inner wall of the conversion joint (7), and the other end of the torsion spring (15) is fixedly connected to the side of the clamping plate (9).

5. The quick-change connection device for excavator buckets according to claim 4, characterized in that: The second fixing member includes a sliding plate (11), which is slidably connected to the inside of the adapter (7) and is slidably sleeved on two sliding rods (13); The end of the slide plate (11) slides in cooperation with the side of the middle part of the card plate (9), and the end of the slide plate (11) that cooperates with the card plate (9) is provided with a slope.

6. The quick-change connection device for excavator buckets according to claim 5, characterized in that: The drive assembly includes a dual-axis motor (12), which is fixedly connected to the middle of the adapter (7). One output shaft of the dual-axis motor (12) is fixedly connected to a first lead screw (10), and the other end of the first lead screw (10) is rotatably connected to the inner wall of the adapter (7). The other output shaft of the dual-axis motor (12) is fixedly connected to a second lead screw (14), and the other end of the second lead screw (14) is rotatably connected to the inner wall of the adapter (7). The first lead screw (10) and the second lead screw (14) are both parallel to the slide rod (13), and the first lead screw (10) and the second lead screw (14) are both located between the two slide rods (13). The clamping plate (8) is threaded on the second lead screw (14), and the sliding plate (11) is threaded on the first lead screw (10).

7. The quick-change connection device for excavator buckets according to claim 1, characterized in that: The adapter (7) has two mounting holes, one of which is equipped with a first connecting shaft (5), and the other is equipped with a second connecting shaft (6).

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