Bucket tooth connecting mechanism and excavator bucket

Abstract

The utility model discloses a bucket tooth connecting mechanism and an excavator bucket, the bucket tooth connecting mechanism is used for being matched with an excavator bucket body, and the bucket tooth connecting mechanism comprises a mounting plate and a connecting plate, and one end of the mounting plate is detachably connected with the excavator bucket body; and the multiple bucket tooth assemblies are arranged, and the multiple bucket tooth assemblies are arranged on the mounting plate at intervals. The bucket tooth assemblies are installed on the installation plate in advance to form a whole, during replacement, only the installation plate needs to be integrally disassembled, the bucket tooth assemblies do not need to be replaced one by one, the bucket tooth assemblies are not directly connected with the excavator bucket body, the replacement steps and difficulty are reduced, and the maintenance workload and the downtime are reduced.

Description

Technical Field

[0001] This application relates to the field of excavator technology, and more specifically to a bucket tooth connection mechanism and a bucket. Background Technology

[0002] An excavator is an earthmoving machine that uses a bucket to dig materials above or below the machine's bearing surface and load them into transport vehicles or unload them into a stockpile. Excavator bucket teeth are important consumable parts on an excavator. Similar to human teeth, they are a combination of tooth bases and tooth tips connected by a pin.

[0003] Firstly, different tooth shapes are used depending on the application scenario, including earthmoving teeth, rock teeth, and conical teeth. Earthmoving teeth (used for excavating soil, sand, gravel, and other light industrial environments) are generally used with buckets with large opening areas, providing a large stacking surface and thus a high filling coefficient, saving operation time and increasing efficiency. Rock teeth (used for ore and stone mining) are used for loading after blasting, made of heavy-duty wear-resistant steel, offering better digging performance and superior economy. Conical teeth (used in coal and geological mining) are mainly suitable for drilling rock formations with low hardness and high impact force. As the materials being excavated change during use, replacement is inevitable; delaying replacement will cause severe wear on the bucket teeth. Traditional bucket tooth replacement methods cannot quickly switch between tooth types, often requiring the individual reinstallation of compatible teeth on each bucket, which undoubtedly increases equipment maintenance costs and operational complexity.

[0004] Therefore, there is an urgent need for a technical structure that allows for convenient and quick replacement of bucket teeth, in order to improve the operating efficiency of construction machinery, reduce maintenance costs, and enhance the equipment's adaptability to various working conditions. Utility Model Content

[0005] The purpose of this application is to provide a bucket tooth connection mechanism and a bucket to improve the convenience of replacing the bucket tooth assembly.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a bucket tooth connection mechanism is provided, the bucket tooth connection mechanism being adapted to the bucket body, the bucket tooth connection mechanism comprising: a mounting plate, one end of the mounting plate being detachably connected to the bucket body; and multiple bucket tooth assemblies, the multiple bucket tooth assemblies being spaced apart on the mounting plate.

[0007] As a preferred embodiment, the mounting plate includes a plate body and a connecting portion, the connecting portion being disposed on both sides of the plate body and detachably connected to the bucket body via the connecting portion; the plate body includes two oppositely disposed ends, the thickness of the end of the plate body used for connecting with the bucket tooth assembly is greater than the thickness of the other end.

[0008] As another preferred embodiment, the bucket tooth assembly includes a mounting base and a bucket tooth body. One end of the bucket tooth assembly is connected to the mounting base, and the mounting base is connected to the mounting plate, so that the bucket tooth body is fixed relative to the mounting plate.

[0009] Further preferably, the bucket tooth body includes a tooth base and a tooth tip, the tooth base and the tooth tip are integrally formed, the end of the tooth tip is provided with an abutment plane, and an inclined first stepped tough surface is provided adjacent to the abutment plane and extending toward the tooth base.

[0010] In a further preferred embodiment, the tooth tip is also provided with a second stepped ductile surface, the second stepped ductile surface adjoining the first stepped ductile surface and extending toward the tooth seat, the second stepped ductile surface being inclined relative to the first stepped ductile surface.

[0011] Preferably, the tooth tip is further provided with a backflow surface, one end of which is in contact with the surface of the tooth seat, and the other end is in contact with the second stepped ductile surface.

[0012] Preferably, at least two tooth tips are provided on the same side of the tooth base, and a raised surface is provided at the bifurcation of the at least two tooth tips.

[0013] Preferably, a bucket is provided, comprising: a bucket body and a bucket tooth connecting mechanism as described in any one of the above, wherein the bucket body is connected to the bucket tooth connecting mechanism.

[0014] Further preferably, the bucket body is provided with a reinforcing member, which abuts against the mounting plate.

[0015] In a further preferred embodiment, the bucket body has a clearance portion, and the mounting plate is placed in the clearance portion to connect with the bucket body, so that the bottom of the mounting plate is flush with the bottom of the bucket body.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] Multiple bucket tooth assemblies are pre-installed on the mounting plate to form a whole. When replacing them, only the mounting plate needs to be removed as a whole, without replacing each bucket tooth assembly individually. Furthermore, the bucket tooth assemblies are not directly connected to the bucket body, which reduces the number of replacement steps and the difficulty, and reduces maintenance workload and downtime.

[0018] Specifically, regarding the structure of the bucket tooth body provided in this application, the contact surface of the tooth tip can disperse the impact force and reduce wear, while the first-step tough surface can guide the force to cut into the material. The combination of the two reduces wear and ensures the digging function, thereby improving the reliability and adaptability of the bucket tooth under harsh working conditions. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the bucket tooth connection mechanism.

[0020] Figure 2 This is a side sectional view of the bucket tooth connecting mechanism.

[0021] Figure 3 This is a schematic diagram of the bucket tooth assembly.

[0022] Figure 4 This is another structural schematic diagram of the bucket tooth assembly.

[0023] Figure 5 This is a schematic diagram of the excavator bucket.

[0024] Figure 6 This is a schematic diagram of the structure of the excavator bucket body.

[0025] Figure 7 This is a side sectional view of the excavator bucket.

[0026] Figure 8 A schematic diagram of the structure for adapting U-shaped bucket teeth to the bucket body.

[0027] Figure 9 This is a schematic diagram of the structure of a U-shaped bucket tooth.

[0028] In the diagram: 1. Bucket tooth connection mechanism; 2. Bucket; 3. Bucket body; 31. Cavity; 32. Bucket body bottom plate; 4. Reinforcing component; 5. Clearance part; 6. U-shaped bucket tooth; 10. Mounting plate; 11. Plate body; 12. Connecting part; 20. Bucket tooth assembly; 21. Mounting seat; 22. Bucket tooth body; 221. Tooth seat; 222. Tooth tip; 223. Abutment plane; 224. First step tough surface; 225. Second step tough surface; 226. Backflow surface; 227. Lifting surface. Detailed Implementation

[0029] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0031] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0032] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0033] In a preferred embodiment, see Figures 1 to 7 A bucket tooth connection mechanism 1 is provided, which is used to adapt to the bucket body 3. The bucket tooth connection mechanism 1 includes: a mounting plate 10, one end of which is detachably connected to the bucket body 3; and multiple bucket tooth assemblies 20, which are spaced apart on the mounting plate 10.

[0034] In this design, multiple bucket tooth assemblies 20 are pre-installed at intervals on the mounting plate 10. That is, the bucket tooth connecting mechanism 1 is regarded as a whole. The bucket tooth mounting mechanism is assembled to the digging area at the front end of the bucket body 3 through the mounting plate 10. Therefore, when the bucket tooth assembly 20 is worn out, it is not necessary to replace each bucket tooth assembly 20 on the bucket body 3 one by one. Instead, it is only necessary to remove the mounting plate 10 as a whole from the bucket body 3. Since the bucket tooth assembly 20 is only connected to the mounting plate 10 and is not directly connected to the bucket body 3, after the mounting plate 10 is removed, the bucket tooth assembly 20 is also removed from the bucket body 3 along with the mounting plate 10. Thus, only the bucket tooth connecting mechanism 1 needs to be replaced as a whole, which reduces the difficulty of replacing the bucket tooth assembly 20.

[0035] As a preferred embodiment, the mounting plate 10 includes a plate body 11 and a connecting portion 12. The connecting portion 12 is located on both sides of the plate body 11 and is detachably connected to the bucket body 3 via metal connectors provided in the connecting portion 12. The plate body 11 includes two oppositely disposed ends, see [reference needed]. Figure 2 The thickness of the end of the plate body 11 used to connect with the bucket tooth assembly 20 is greater than the thickness of the other end, so as to improve the stability of the connection between the bucket tooth assembly 20 and the plate body 11.

[0036] As another preferred embodiment, the bucket tooth assembly 20 includes a mounting base 21 and a bucket tooth body 22. One end of the bucket tooth assembly 20 is connected to the mounting base 21 and is connected to the mounting plate 10 through the mounting base 21, so that the bucket tooth body 22 is fixed relative to the mounting plate 10. Preferably, the bucket tooth assembly 20 is also connected to the mounting plate 10 through the mounting base 21 in a replaceable manner, that is, the mounting base 21 and the mounting plate 10 are detachably connected. In different operating conditions, the bucket tooth assembly 20 with different structures can be temporarily replaced to adapt to the usage scenario, thereby improving the application range of the bucket tooth connection mechanism 1 in this application.

[0037] In a further preferred embodiment, the tooth body 22 includes a tooth base 221 and a tooth tip 222, which are integrally formed. The side wall of the tooth base 221 is provided with a through hole. A pin is inserted into the through hole of the side wall of the tooth base 221 to connect with the mounting base 21. Therefore, under certain circumstances, if only a few individual tooth bodies 22 in the tooth connection mechanism 1 are damaged, the pin on the tooth base 221 can be pulled out to separate the tooth base 221 from the mounting base 21, and then the individual tooth body 22 can be replaced.

[0038] The tip of the tooth 222 has an abutment surface 223 at its end. A first stepped tough surface 224, inclined and extending towards the tooth base 221, adjoins the abutment surface 223. The abutment surface 223 is vertically positioned. When the tooth body 22 performs excavation operations, the abutment surface 223 of the tip of the tooth 222 first contacts the frozen soil or ore. Because the abutment surface 223 is vertically positioned, it can withstand the impact force from the frozen soil or ore over a larger area, thus evenly distributing the external force and preventing stress concentration at a single point on the tip of the tooth 222. This effectively reduces excessive wear caused by a single strong impact or continuous friction, significantly extending the service life of the tip of the tooth 222.

[0039] Meanwhile, the first stepped tough surface 224, which is inclined and adjoins the contact plane 223, can guide the force during digging along the direction of the tough surface, based on the dispersion of external force by the contact plane 223. This allows the tooth tip 222 to have both stability and smooth cutting into the material when in contact with it. Even if the contact plane 223 may slightly reduce the initial sharpness of the tooth tip 222, the first stepped tough surface 224 can gradually adjust the direction of the force during digging due to its special inclined structure, allowing the tooth tip 222 to gradually penetrate into the material, like a transitional cutting edge. This ensures that the bucket tooth can reduce wear without losing digging effectiveness. While ensuring the structural strength and durability of the bucket tooth body 22, it does not affect its normal digging and crushing functions, thereby improving the reliability and adaptability of the entire bucket tooth body 22 under harsh working conditions. This allows the bucket tooth to better cope with various complex digging scenarios, whether it is hard frozen soil or blocky ore, and can complete the task efficiently and stably.

[0040] In a further preferred embodiment, the tooth tip 222 is also provided with a second stepped ductile surface 225, which is adjacent to the first stepped ductile surface 224 and extends toward the tooth seat 221. The second stepped ductile surface 225 is inclined relative to the first stepped ductile surface 224.

[0041] The second-step ductile surface 225 borders the first-step ductile surface 224 and extends towards the tooth base 221, while being inclined relative to the first-step ductile surface 224. During the excavation operation, after the first-step ductile surface 224 initially cuts into the material, the second-step ductile surface 225 further plays its role. Its inclination angle is different from that of the first-step ductile surface 224, which can change the direction and distribution of the force, allowing the tooth tip 222 to adapt to different resistance changes when penetrating deeper into the material. For example, when excavating ores with uneven hardness, as the excavation depth increases and harder parts are encountered, the second-step ductile surface 225 can better adjust the force, dispersing the impact force over a wider area, preventing the tooth tip 222 from being damaged due to excessive local stress, further enhancing the wear resistance and digging ability of the tooth tip 222, and improving the adaptability of the bucket teeth to materials of different hardness under complex working conditions.

[0042] Preferably, the tooth tip 222 is also provided with a backflow surface 226, one end of which is in contact with the surface of the tooth seat 221, and the other end is in contact with the second step tough surface 225.

[0043] Regarding the design of the backflow surface 226 in this application, during the digging process, the backflow surface 226 can guide debris, soil, or small ore particles generated during digging to slide off its surface, preventing these materials from accumulating at the connection between the tooth tip 222 and the tooth base 221. If these materials accumulate, it may increase the weight and resistance of the tooth tip 222, affecting digging efficiency, and may even cause wear or damage to the connection structure between the tooth tip 222 and the tooth base 221 during subsequent digging. By ensuring the smooth sliding of materials, the backflow surface 226 maintains the cleanliness and lightness of the tooth tip 222, enabling the bucket teeth to work continuously and efficiently. It also indirectly protects the structural integrity of the connection between the tooth tip 222 and the tooth base 221, extending the overall service life of the bucket teeth. Preferably, the backflow surface 226 is a double-triangular reinforcing structure, located on both sides of the tooth tip 222, further optimizing material detachment while ensuring the strength of the tooth tip 222.

[0044] Preferably, at least two tooth tips 222 are provided on the same side of the tooth base 221, and raised surfaces 227 are provided at the bifurcation of the at least two tooth tips 222.

[0045] The lifting surfaces 227, located at the bifurcation points of at least two tooth tips 222 on the same side of the tooth base 221, play a crucial role in excavation operations. When the bucket teeth insert into the material pile, the lifting surfaces 227, as the tooth tips 222 are raised, lift and throw the material upwards. This helps improve the unloading efficiency of the excavation operation, allowing the material to exit the bucket tooth assembly 20 more quickly and reducing material residue within the assembly. For example, when loading loose materials such as sand or coal, the lifting surfaces 227 allow the material to enter transport vehicles or other designated locations more smoothly, reducing the number of times the bucket tooth assembly 20 needs repeated excavation and cleaning.

[0046] Preferably, a bucket 2 is provided, comprising: a bucket body 3 and a bucket tooth connecting mechanism 1 as described above, wherein the bucket body 3 is connected to the bucket tooth connecting mechanism 1.

[0047] It should be noted that the connecting part 12 has a trapezoidal structure, which can effectively ensure the structural stability of the connecting part 12. At the same time, the bucket body 3 is provided with a reinforcing member 4, which is connected to the inner wall of the cavity 31 of the bucket body 3 and is located at the digging position of the bucket body 3. Since the bucket body 3 in this application needs to be used in conjunction with the bucket tooth connecting assembly, the part of the bucket body 3 used for digging has a large hollow area. In order to ensure the strength of the digging position of the bucket body 3, the reinforcing member 4 is provided. When the bucket tooth connecting mechanism 1 is connected to the bucket body 3, the reinforcing member 4 abuts against the mounting plate 10 to further improve the strength of the end of the bucket body 3 used for digging.

[0048] Further optimization involves providing a clearance portion 5 for the bucket body 3, see [reference]. Figure 6and Figure 7 The clearance portion 5 is recessed towards the cavity 31 of the bucket body 3, and the mounting plate 10 is placed in the clearance portion 5 to connect with the bucket body 3, so that the bottom of the mounting plate 10 is flush with the bottom of the bucket body 3.

[0049] The bottom of the mounting plate 10 is flush with the bottom plate 32 of the bucket body, which facilitates the smooth sliding and transfer of materials during excavation and loading. The mounting plate 10's protrusion or depression will not cause uneven material accumulation or jamming within the bucket 2. Whether excavating lumpy or loose materials, it ensures that the material enters and exits the cavity 31 of the bucket body 3 along the expected trajectory, reducing material residue and spillage, and improving the accuracy and integrity of material loading and unloading. Furthermore, the clearance portion 5 provides some protection for the mounting plate 10, preventing it from protruding and reducing the risk of external collisions and wear in complex operating environments.

[0050] Further, see Figures 8 to 9 The bucket tooth connecting mechanism 1 in this application can also be applied to the U-shaped bucket tooth 6. The U-shaped bucket tooth 6 is connected to the mounting base 21 via the tooth seat 221 and then assembled onto the mounting plate 10. The above embodiment describes a V-shaped bucket tooth, specifically a double-headed ice-breaking tooth suitable for ice breaking. The U-shaped bucket tooth 6 is a double-headed rock tooth used for blasting and ore loading. It is made of heavy-duty wear-resistant steel with better digging performance and more outstanding economic benefits. Different types of bucket tooth structures can be selected according to different working conditions. At the same time, when replacing different types of bucket tooth components 20 under different working conditions, only the mounting plate 10 needs to be completely disassembled and replaced, without having to disassemble each bucket tooth component 20 individually, which is convenient and quick.

[0051] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A bucket tooth connection mechanism characterized by, The tooth connecting mechanism is used for adapting to a bucket body, and the tooth connecting mechanism comprises: a mounting plate, one end of the mounting plate being detachably connected with the bucket body; a plurality of tooth assemblies, the plurality of tooth assemblies being spaced apart on the mounting plate; the mounting plate comprising a plate body and connecting portions, the connecting portions being arranged on both sides of the plate body and being detachably connected with the bucket body through the connecting portions; the plate body comprising two opposite ends, the thickness of the end of the plate body for connecting with the tooth assembly being greater than the thickness of the other end.

2. The tooth connecting mechanism according to claim 1, wherein the tooth assembly comprising a mounting seat and a tooth body, one end of the tooth body being connected with the mounting seat and being connected with the mounting plate through the mounting seat so that the tooth body is fixed relative to the mounting plate.

3. The tooth connecting mechanism according to claim 2, wherein the tooth body comprising a tooth base and a tooth tip, the tooth base and the tooth tip being integrally formed, the tooth tip being provided with an abutting plane at one end, and a first inclined stepped surface being arranged at the end of the abutting plane and extending towards the tooth base.

4. The tooth connecting mechanism according to claim 3, wherein the tooth tip is further provided with a second stepped surface, the second stepped surface being arranged at the end of the first stepped surface and extending towards the tooth base, and the second stepped surface being arranged to be inclined relative to the first stepped surface.

5. The tooth connecting mechanism according to claim 4, wherein the tooth tip is further provided with a reverse flow surface, one end of the reverse flow surface being connected with the surface of the tooth base, and the other end of the reverse flow surface being connected with the second stepped surface.

6. The tooth connecting mechanism according to any one of claims 3-5, wherein at least two tooth tips are arranged on the same side of the tooth base, and a lifting surface is arranged at the bifurcation of the at least two tooth tips.

7. An excavating bucket, characterized by comprising: a bucket body; the tooth connecting mechanism according to any one of claims 1-6, the bucket body being connected with the tooth connecting mechanism.

8. The bucket according to claim 7, wherein the bucket body is provided with a reinforcing member, and the reinforcing member abuts against the mounting plate.

9. The bucket according to claim 7, wherein the bucket body is provided with a recessed portion, the mounting plate being arranged in the recessed portion to be connected with the bucket body, and the bottom of the mounting plate being flush with the bottom of the bucket body.

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