Excavator bucket with protective structure
By designing sliding rails, threaded columns, and other structures on the excavator bucket and installing stone-removing components to prevent sharp stones from scratching it, the problem of deepening scratches on the bucket surface has been solved, thus improving the service life and safety of the bucket.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏国润机械制造有限公司
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-12
AI Technical Summary
Existing excavator buckets scrape against soil mixed with sharp stones, causing deeper scratches, weakening the metal structure, potentially leading to cracks, and affecting service life and safety.
An excavator bucket with a protective structure was designed. Through the cooperation of slide rails, threaded columns, guide grooves, strip grooves and threaded tubes, a stone-dispelling component is installed to push away sharp stones and prevent scratches. At the same time, it can be converted into a flat plate for leveling soil.
It effectively prevents sharp stones from scratching the bucket, extends its service life, improves work efficiency, and reduces safety hazards.
Smart Images

Figure CN224227888U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of excavator technology, specifically relating to an excavator bucket with a protective structure. Background Technology
[0002] The excavator bucket, also known as a digging bucket, is an important working device of an excavator, used for digging materials such as soil, rock, and gravel. An excavator bucket consists of components such as a tooth base plate, bottom plate, side plates, wall plates, lug plates, back plate, bucket lug plates, bucket lug sleeves, bucket teeth, tooth bases, and guard plates or bucket corners. Welding is the most critical manufacturing process for the bucket, and the quality of the welding directly affects the structural strength and service life of the bucket.
[0003] The manufacturing process of excavator buckets includes material preparation, turning, milling, drilling, forming, welding, grinding, sandblasting, and painting. Buckets are specialized industrial equipment structural components that require professional processing and manufacturing equipment, such as CNC plasma cutting machines, beveling machines, plate rolling machines, welding positioners, and boring machines, to achieve high-efficiency and high-quality manufacturing.
[0004] In existing excavator operation scenarios, when an excavator swings its powerful mechanical arm to dig, the bucket, as a key component that directly contacts the soil, bears enormous pressure and friction. During the digging process, the soil often contains various sharp stones of different sizes, shapes, and hard textures. When the bucket cuts into the soil, these sharp stones act like blades, constantly scraping and scratching the surface of the bucket.
[0005] As the excavator continues to work, the bucket comes into contact with the soil and stones very frequently. Each dig may make the scratches deeper. The tiny scratches gradually accumulate and deepen, and may eventually evolve into obvious gullies.
[0006] More seriously, because the bucket needs to withstand enormous impact and vibration during digging, these deepening scratches gradually weaken the metal structure on the bucket's surface. Under continuous stress, the metal fatigue at the scratches intensifies, eventually leading to cracks. Once a crack appears in the bucket, it not only affects the excavator's normal operating efficiency and reduces the bucket's service life, but it can also pose safety hazards, such as the bucket suddenly breaking during digging, threatening the excavator operator and the surrounding environment. Utility Model Content
[0007] The purpose of this invention is to provide an excavator bucket with a protective structure, aiming to solve the problem in existing excavator operation scenarios where various sharp stones mixed in with the soil constantly scrape and scratch the surface of the bucket. As the excavator continues to work, the frequency of contact between the bucket and the soil and stones is extremely high, leading to obvious grooves on the bucket surface. These deepening scratches gradually weaken the metal structure of the bucket surface. Under continuous stress, the metal fatigue at the scratches intensifies, eventually potentially causing cracks. Once cracks appear in the bucket, it not only affects the normal working efficiency of the excavator and reduces the service life of the bucket, but also may pose safety hazards, such as sudden bucket breakage during excavation, threatening the excavator operator and the surrounding environment.
[0008] To achieve the above objectives, this utility model provides the following technical solution: an excavator bucket with a protective structure, comprising a bucket body, bucket ears, tooth seats, and tooth tips, wherein the bucket ears are connected to the upper surface of the bucket body, an assembly assembly is provided between the bucket body and the tooth seats, and tooth tips are connected to the end of the tooth seats;
[0009] The lower surface of the bucket body is connected to a slide rail, the lower surface of the bucket body is connected to a threaded column, the lower surface of the bucket body is provided with a stone discharge component, the upper surface of the stone discharge component near the slide rail is provided with a guide groove, the surface of the stone discharge component near the threaded column is provided with a strip groove, and the surface of the threaded column is fitted with a threaded tube.
[0010] As a preferred embodiment of the excavator bucket with protective structure of this utility model, the slide rail and guide groove are provided in three sets, and the stone discharge component is slidably connected to the slide rail through the guide groove.
[0011] As a preferred embodiment of the excavator bucket with protective structure of this utility model, two sets of strip grooves are provided on the surface of the stone-discharging component. The positions of the strip grooves and the threaded columns are matched. The cross-section of the end of the strip groove is the center of a circle. The circular dimension of the end of the strip groove matches the circular dimension of the end of the threaded tube.
[0012] As a preferred embodiment of the excavator bucket with protective structure of this utility model, two sets of threaded tubes and threaded columns are provided, and the threaded tubes and threaded columns are connected by threads.
[0013] As a preferred embodiment of the excavator bucket with protective structure of this utility model, the assembly component includes a threaded hole, a sliding groove, a fixing hole and a fixing bolt. The end of the bucket body is provided with a threaded hole, the tooth seat side surface near the end of the bucket body is provided with a sliding groove, the surface of the tooth seat is provided with a fixing hole, and a fixing bolt passes through the interior of the fixing hole and the threaded hole.
[0014] As a preferred embodiment of the excavator bucket with protective structure of this utility model, the toothed seat is slidably connected to the edge of the bucket body through a sliding groove.
[0015] In the preferred embodiment of the excavator bucket with protective structure of this utility model, the fixing bolt and the threaded hole are connected by a thread.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] This utility model allows for the installation of a stone-discharging component at the bottom of the bucket body through the combined use of a slide rail, threaded column, guide groove, strip groove, and threaded tube. This allows the sharp stones to be pushed away during digging by the stone-discharging component, thus preventing the sharp stones from scratching the bucket body and protecting it.
[0018] In this invention, when the fixing bolt rotates inside the threaded hole, it can move away from the bucket body. When the fixing bolt moves to the outside of the threaded hole, the toothed seat can be pulled laterally and removed. At this time, the end of the bucket body is flat, which can be used to level muddy ground, thereby improving the practicality and applicability of the bucket. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a schematic diagram of the structure of this utility model from below;
[0022] Figure 3 This is an exploded view of the installation structure of the stone-removing component of this utility model;
[0023] Figure 4 This is a schematic diagram of the stone-discharging component of this utility model;
[0024] Figure 5 This is a schematic diagram of the threaded pipe structure of this utility model;
[0025] Figure 6 This is an exploded view of the assembly component structure of this utility model;
[0026] Figure 7 This utility model Figure 1 Schematic diagram of the structure at point A in the middle.
[0027] In the diagram: 1. Bucket body; 2. Bucket ear; 3. Tooth seat; 4. Tooth tip; 5. Slide rail; 6. Threaded post; 7. Stone ejector; 8. Guide groove; 9. Strip groove; 10. Threaded pipe; 11. Threaded hole; 12. Slide groove; 13. Fixing hole; 14. Fixing bolt. Detailed Implementation
[0028] 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.
[0029] Please see Figures 1-7 The present invention provides the following technical solution: an excavator bucket with a protective structure, including a bucket body 1, a bucket ear 2, a tooth seat 3 and a tooth tip 4. The bucket ear 2 is connected to the upper surface of the bucket body 1. An assembly assembly is provided between the bucket body 1 and the tooth seat 3. The tooth tip 4 is connected to the end of the tooth seat 3.
[0030] The lower surface of the bucket body 1 is connected to a slide rail 5, the lower surface of the bucket body 1 is connected to a threaded post 6, the lower surface of the bucket body 1 is provided with a stone discharge component 7, the upper surface of the stone discharge component 7 near the slide rail 5 is provided with a guide groove 8, the surface of the stone discharge component 7 near the threaded post 6 is provided with a strip groove 9, and the surface of the threaded post 6 is fitted with a threaded tube 10.
[0031] First, park the excavator on a flat, stable surface, ensuring the boom and stick are in the correct positions. Then, use a lifting device or the excavator's own boom to lift the bucket body 1 and slowly move it to the front of the excavator, aligning it with the stick connection point. Next, align the connecting holes of the bucket lugs 2 on the surface of the bucket body 1 with the connecting holes on the stick, ensuring the pin can be easily inserted. After inserting the pin, use bolts or other fasteners to secure the bucket to the stick. The bucket body 1 can then be driven by the excavator's power mechanism to perform digging operations.
[0032] Preferably, the slide rail 5 and the guide groove 8 are provided in three sets, and the stone-discharging component 7 is slidably connected to the slide rail 5 through the guide groove 8.
[0033] In actual use, the stone-discharging component 7 slides on the surface of the slide rail 5 through the guide groove 8, which can limit the movement direction of the stone-discharging component 7.
[0034] Preferably, two sets of strip grooves 9 are provided on the surface of the stone-discharging component 7. The positions of the strip grooves 9 and the threaded post 6 are matched. The cross-section of the end of the strip groove 9 is the center of a circle. The size of the circular groove at the end of the strip groove 9 matches the size of the circular tube at the end of the threaded tube 10.
[0035] In practical use, the threaded tube 10 can be fixed in the circular groove at the end of the strip groove 9 after being inserted and fixed, which can fix the position of the stone-discharging component 7.
[0036] Preferably, there are two sets of threaded tubes 10 and threaded posts 6, and the threaded tubes 10 and threaded posts 6 are connected by threads.
[0037] In practical use, the position of the threaded tube 10 can be fixed by connecting it with the threaded post 6.
[0038] Preferably, the assembly includes a threaded hole 11, a groove 12, a fixing hole 13 and a fixing bolt 14. The end of the bucket body 1 is provided with a threaded hole 11, the side surface of the tooth seat 3 near the end of the bucket body 1 is provided with a groove 12, the surface of the tooth seat 3 is provided with a fixing hole 13, and the fixing hole 13 and the threaded hole 11 are penetrated by a fixing bolt 14.
[0039] Preferably, the toothed seat 3 is slidably connected to the edge of the bucket body 1 via the sliding groove 12.
[0040] In actual use, the toothed seat 3 can drive the slide groove 12 to slide at the edge of the bucket body 1, so that the position of the toothed seat 3 can be adjusted.
[0041] Preferably, the fixing bolt 14 and the threaded hole 11 are connected by a thread.
[0042] In practical use, when the fixing bolt 14 passes through the fixing hole 13 and is threadedly connected to the threaded hole 11, the tooth seat 3 can be installed on the outer ring of the bucket body 1 through the fixing bolt 14.
[0043] Working principle: When using the excavator bucket, the stone ejector 7 first drives the guide groove 8 to slide on the surface of the slide rail 5. During the sliding process, the stone ejector 7 can drive the strip groove 9 to slide on the outside of the threaded column 6. When the center of the circular groove at the end of the strip groove 9 driven by the stone ejector 7 is in the same straight line as the central axis of the threaded column 6, the threaded tube 10 can be sleeved on the surface of the threaded column 6 and rotated. When the threaded tube 10 rotates, it can move towards the bucket body 1. When the threaded tube 10 is inside the circular groove at the end of the strip groove 9, the position of the stone ejector 7 can be fixed by the threaded tube 10, thus realizing the installation of the stone ejector 7. When the bucket body 1 is installed on the excavator for use, when the bucket body 1 is inserted into the ground, the sharp stones can be squeezed out by the inclined surface of the tip of the stone ejector 7, thus avoiding the sharp stones from leaving scratches on the surface of the bucket body 1 and causing damage.
[0044] When the excavator with the bucket body 1 installed needs to be used for leveling dirt roads, the fixing bolt 14 can be rotated first. When the fixing bolt 14 rotates inside the threaded hole 11, it can move away from the bucket body 1. When the fixing bolt 14 moves to the outside of the threaded hole 11, the tooth seat 3 can be pulled laterally and removed. At this time, the end of the bucket body 1 is flat, so it can be used to level dirt roads.
[0045] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.
Claims
1. An excavator bucket with a protective structure, comprising a bucket body (1), bucket ears (2), tooth seats (3), and tooth tips (4), characterized in that: The upper surface of the bucket body (1) is connected to the bucket ear (2), and an assembly assembly is provided between the bucket body (1) and the tooth seat (3). The end of the tooth seat (3) is connected to the tooth tip (4). The lower surface of the bucket body (1) is connected to a slide rail (5), the lower surface of the bucket body (1) is connected to a threaded column (6), the lower surface of the bucket body (1) is provided with a stone discharge component (7), the upper surface of the stone discharge component (7) near the slide rail (5) is provided with a guide groove (8), the surface of the stone discharge component (7) near the threaded column (6) is provided with a strip groove (9), and the surface of the threaded column (6) is fitted with a threaded tube (10).
2. The excavator bucket with a protective structure according to claim 1, characterized in that: The slide rail (5) and guide groove (8) are provided in three sets, and the stone-discharging component (7) is slidably connected to the slide rail (5) through the guide groove (8).
3. The excavator bucket with a protective structure according to claim 1, characterized in that: Two sets of the strip groove (9) are provided on the surface of the stone-discharging component (7). The position of the strip groove (9) matches that of the threaded column (6). The cross-section of the end of the strip groove (9) is the center of the circle. The circular dimension of the end of the strip groove (9) matches the dimension of the circular tube at the end of the threaded tube (10).
4. The excavator bucket with a protective structure according to claim 1, characterized in that: There are two sets of threaded tubes (10) and threaded columns (6), and the threaded tubes (10) and threaded columns (6) are connected by threads.
5. The excavator bucket with a protective structure according to claim 1, characterized in that: The assembly includes a threaded hole (11), a groove (12), a fixing hole (13), and a fixing bolt (14). The end of the bucket body (1) is provided with a threaded hole (11), the side surface of the tooth seat (3) near the end of the bucket body (1) is provided with a groove (12), the surface of the tooth seat (3) is provided with a fixing hole (13), and the fixing hole (13) and the threaded hole (11) are connected by a fixing bolt (14).
6. The excavator bucket with a protective structure according to claim 5, characterized in that: The tooth seat (3) is slidably connected to the edge of the bucket body (1) via the sliding groove (12).
7. The excavator bucket with a protective structure according to claim 6, characterized in that: The fixing bolt (14) is threadedly connected to the threaded hole (11).