A small excavator shovel
By introducing a movable plate structure and threaded connection design into the bucket of a mini excavator, the problem of sticky soil adhesion is solved, achieving efficient self-cleaning and sealing, and improving the operating efficiency and structural adaptability of mini excavators.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGXIN (WULIAN) ENGINEERING MACHINERY CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-03
Smart Images

Figure CN224451744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of small excavator bucket. Background Technology
[0002] Mini excavator buckets are buckets installed on small excavators for digging operations. They are an indispensable accessory for excavator use and are widely used on various mini excavators.
[0003] However, when using the bucket, some soil easily adheres to the inner wall, bottom, and root of the bucket teeth during excavation of sticky soil or unloading of materials. This adhesion not only causes incomplete unloading and affects loading efficiency, but also leads to increased bucket weight and center of gravity shift in subsequent operations. To solve the problem of adhesion residue, traditional methods usually require operators to stop work and manually clean it with external force. This not only interrupts the continuity of work and significantly increases downtime for cleaning, reducing overall work efficiency, but also increases the labor intensity of operators and the complexity of equipment maintenance. At the same time, existing scraping mechanisms designed to improve cleaning effect often have problems such as complex structure, excessive size, or occupying effective loading space, making it difficult to adapt to the compact structure requirements of small excavators. Some structures may have poor sealing during operation, causing small materials to leak from the side gaps, further reducing the effective loading capacity and cleaning efficiency. Utility Model Content
[0004] The main objective of this invention is to provide a small excavator bucket that can effectively solve the technical problems mentioned in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A small excavator bucket includes a bucket body, bucket claws, and a bucket mounting plate. Multiple bucket claws are welded to the front end of the bucket body, and the bucket mounting plate is welded to the top of the bucket body. An mounting collar is integrally formed on the inner side of the bucket mounting plate. Mounting slots are provided on both sides of the bucket body, and screw positioning blocks are fixedly installed on both sides of the bucket body. A movable plate structure is provided inside the bucket body.
[0007] As a further embodiment of this utility model, a protective plate is welded to the ground of the bucket body, a screw positioning block is located on one side of the protective plate, and multiple bucket claws are arranged in a straight line.
[0008] As a further embodiment of this utility model, the number of bucket mounting plates is two, and the mounting collar passes through the bucket mounting plate.
[0009] As a further embodiment of this utility model, the movable plate structure includes a positive and negative threaded screw, screw ends, a sealing movable plate, and a bulldozer blade. The outer ends of the positive and negative threaded screw are movably installed in the screw positioning block. The two screw ends are welded to the two ends of the positive and negative threaded screw. The two sealing movable plates are embedded in the two mounting through slots. The bulldozer blade is welded to one side of the sealing movable plate.
[0010] As a further embodiment of this utility model, the positive and negative threaded screws penetrate the interior of the bucket body, the sealing moving plate is sleeved on the outside of the positive and negative threaded screws and threadedly connected to them, and the bulldozer blade is fitted and connected to the inner wall of the bucket body.
[0011] As a further embodiment of this utility model, the positive and negative threaded screw drives the sealing moving plate to move into the bucket body, and the bulldozer blades on both sides are symmetrically arranged and installed.
[0012] Compared with the prior art, this utility model has the following beneficial effects: the sealing moving plates and bulldozer blades on both sides are driven to move symmetrically into the bucket body by the positive and negative threaded screws. The bulldozer blades fit tightly against the inner wall of the bucket, which can thoroughly scrape off the adhering soil and avoid material residue. Compared with the traditional bucket that requires manual cleaning, it significantly reduces downtime for cleaning and improves the continuity of operation. At the same time, the threaded installation structure of the moving plate is also easy to disassemble. The fixing of the sealing moving plate by the positive and negative threaded screws ensures the stability of the seal of the installation through groove. It solves the problem of material adhesion and cleaning difficulties in traditional buckets. While ensuring structural strength, it improves self-cleaning efficiency, which is especially suitable for the needs of small excavators in narrow or delicate operation scenarios. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of a small excavator bucket according to the present invention;
[0014] Figure 2 This is a rear view of a small excavator bucket according to the present invention;
[0015] Figure 3 This is a structural diagram of the moving sealing plate in the bucket of a small excavator according to the present invention;
[0016] Figure 4 This is an exploded view of the movable plate structure in the bucket of a small excavator according to this utility model.
[0017] In the diagram: 1. Bucket body; 2. Bucket claws; 3. Bucket mounting plate; 4. Mounting collar; 5. Mounting through groove; 6. Screw positioning block; 7. Moving plate structure; 8. Positive and negative thread screws; 9. Screw end; 10. Sealing moving plate; 11. Bulldozer blade; 12. Protective plate. Detailed Implementation
[0018] 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.
[0019] like Figures 1-4 As shown, a small excavator bucket is shown; please refer to it carefully. Figures 1-4 The bucket body includes a bucket body 1, bucket claws 2, and bucket mounting plate 3. Multiple bucket claws 2 are welded to the front end of the bucket body 1, and the bucket mounting plate 3 is welded to the top of the bucket body 1. An installation collar 4 is integrally formed on the inner side of the bucket mounting plate 3. Installation through slots 5 are opened on both sides of the bucket body 1. Screw positioning blocks 6 are fixedly installed on both sides of the bucket body 1. A movable plate structure 7 is provided inside the bucket body 1.
[0020] Please refer to this carefully. Figure 1 and Figure 2 The bucket body 1 has a protective plate 12 welded to the ground, the screw positioning block 6 is located on one side of the protective plate 12, and multiple bucket claws 2 are arranged in a straight line.
[0021] Please refer to this carefully. Figures 1-4 There are two bucket mounting plates 3, and the mounting collar 4 passes through the bucket mounting plate 3.
[0022] Specifically, the protective plate 12 serves to protect the bottom surface of the bucket body 1 from friction, and the excavator's mounting rod passes through the mounting collar 4 to install and fix the bucket.
[0023] Please refer to this carefully. Figure 1 , Figure 3 and Figure 4 The movable plate structure 7 includes a positive and negative threaded screw 8, screw end 9, sealing movable plate 10 and bulldozer blade 11. The outer ends of the positive and negative threaded screw 8 are movably installed in the screw positioning block 6. The two screw ends 9 are welded to the two ends of the positive and negative threaded screw 8. The two sealing movable plates 10 are embedded in the two mounting through slots 5. The bulldozer blade 11 is welded to one side of the sealing movable plate 10.
[0024] Please refer to this carefully. Figure 1 , Figure 3 and Figure 4 The positive and negative threaded screw 8 penetrates the interior of the bucket body 1, the sealing moving plate 10 is sleeved on the outside of the positive and negative threaded screw 8 and threadedly connected to it, and the bulldozer blade 11 is fitted and connected to the inner wall of the bucket body 1.
[0025] Please refer to this carefully. Figure 1 , Figure 3 and Figure 4 The positive and negative threaded screws 8 drive the sealing moving plate 10 to move into the bucket body 1, and the bulldozer blades 11 on both sides are symmetrically arranged and installed.
[0026] Specifically, when the bucket body 1 is in use, the sealing moving plate 10 seals the mounting slot 5. When the screw end 9 rotates the positive and negative thread screw 8, the positive and negative thread screw 8 moves through the threaded connection with the sealing moving plate 10. Since the threads of the positive and negative thread screw 8 are set to positive and negative, it drives the two sealing moving plates 10 to move in opposite directions, causing the two sealing moving plates 10 to move closer to the inside of the bucket body 1. Then, the sealing moving plate 10 drives the bulldozer blade 11 to move against the inner wall of the bucket body 1, removing the soil adhering to the inside of the bucket body 1.
[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A small excavator bucket, comprising a bucket body (1), bucket claws (2), and a bucket mounting plate (3), wherein a plurality of said bucket claws (2) are welded to the front end of the bucket body (1), and said bucket mounting plate (3) is welded to the top of the bucket body (1), characterized in that: The inner side of the bucket mounting plate (3) is integrally formed with a mounting collar (4), and both sides of the bucket body (1) are provided with mounting through grooves (5). Both sides of the bucket body (1) are fixedly installed with screw positioning blocks (6), and the inside of the bucket body (1) is provided with a movable plate structure (7).
2. A small excavator bucket according to claim 1, characterised in that: The bucket body (1) has a protective plate (12) welded to the ground, the screw positioning block (6) is located on one side of the protective plate (12), and multiple bucket claws (2) are arranged in a line.
3. A small excavator bucket according to claim 1, characterized in that: The number of bucket mounting plates (3) is two, and the mounting collar (4) passes through the bucket mounting plate (3).
4. A small excavator bucket according to claim 1, characterized in that: The movable plate structure (7) includes a positive and negative thread screw (8), screw end (9), sealing movable plate (10) and bulldozer blade (11). The outer ends of the positive and negative thread screw (8) are movably installed in the screw positioning block (6). The two screw ends (9) are welded to the two ends of the positive and negative thread screw (8). The two sealing movable plates (10) are embedded in the two mounting through slots (5). The bulldozer blade (11) is welded to one side of the sealing movable plate (10).
5. A small excavator bucket according to claim 4, characterised in that: The positive and negative threaded screw (8) penetrates the interior of the bucket body (1), the sealing moving plate (10) is sleeved on the outside of the positive and negative threaded screw (8) and threadedly connected to it, and the bulldozer blade (11) is fitted and connected to the inner wall of the bucket body (1).
6. A small excavator bucket according to claim 4, characterised in that: The positive and negative threaded screws (8) drive the sealing moving plate (10) to move into the bucket body (1), and the bulldozer blades (11) on both sides are symmetrically arranged and installed.