Bucket lug and bucket shaft connecting assembly
By using tapered bolt holes and shaft sleeve design in the bucket ear and bucket shaft connection assembly, the shaking problem of the bucket ear and bucket shaft is solved, and the working efficiency and safety of the excavator are improved.
Patent Information
- Application Number
- CN202422369287.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-27
AI Technical Summary
There is a large shaking when the existing bucket ears are connected to the bucket shaft, which affects the working efficiency and safety of the excavator.
The bucket ear and bucket shaft connection assembly are designed, where the bolt holes of the bucket ear and bucket shaft are tapered, and the upper half of the bolt is intersected with the tapered hole to ensure no gap connection, and a shaft sleeve is provided on the bucket shaft to reduce wear.
The stable connection between the bucket ear and the bucket shaft is achieved, avoiding shaking, and improving the working efficiency and safety of the excavator.
Smart Images
Figure CN223189748U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of excavator accessories, in particular to a bucket ear and bucket shaft connection assembly. Background Art
[0002] An excavator bucket lug is a metal, ear-shaped component used to secure and connect the bucket. Its robust structure and reliable connection are designed to withstand the immense forces and pressures of the bucket during digging and loading. It must possess sufficient strength, rigidity, and wear resistance to handle the excavation, loading, and transportation tasks of heavy-duty construction. The bucket lug plays a crucial role in connecting the bucket to the excavator boom, directly impacting the excavator's operating efficiency and safety.
[0003] The bucket lug is typically connected to a bucket shaft that passes through a horse-drawn head or I-beam. The lug is welded to the bucket lug plate of the bucket. The lug is equipped with a vertically extending bolt hole, and one end of the bucket shaft also has a vertically extending bolt hole. After the shaft is inserted into the lug, a bolt is passed through both the lug and shaft bolt holes, and the bolt is locked with a nut. In existing lug and shaft configurations, both the lug and shaft bolt holes are vertical holes with a constant inner diameter, while the bolts have a constant outer diameter. After the bolts pass through the lug and shaft bolt holes, a gap exists between the bolts and the lug and shaft bolt holes. This causes significant wobble in the lug relative to the shaft, which in turn causes significant wobble in the bucket during operation. Utility Model Content
[0004] The utility model provides a bucket ear and bucket shaft connection assembly, the main purpose of which is to overcome the problem that the existing bucket ear may cause large shaking relative to the bucket shaft.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0006] The cam is threaded with a threaded hole that is adapted to engage the camshaft and engage with the camshaft when the camshaft is in engagement with the camshaft.
[0007] Furthermore, a shaft sleeve is provided in the right half of the shaft hole, and the left part of the bucket shaft passes through the shaft sleeve.
[0008] Furthermore, the right half of the shaft hole is a tapered shaft hole, the inner diameter of the tapered shaft hole gradually decreases from right to left, the inner diameter of the left half of the shaft hole remains unchanged, and a step surface is provided at the junction between the left half of the shaft hole and the right half of the shaft hole. The shaft sleeve is a tapered shaft sleeve, the outer diameter of the shaft sleeve gradually decreases from right to left, the shaft sleeve is interference fit with the right half of the shaft hole, and the left end face of the shaft sleeve conflicts with the step surface.
[0009] Furthermore, there are two middle bolt tapered holes, which are arranged on the left and right.
[0010] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages: the utility model has a novel structure and ingenious design. When the bucket ear and the bucket shaft are connected, the bolts are passed through the upper bolt tapered hole, the middle bolt tapered hole and the lower bolt hole in sequence, and then the bolts are tightened so that the upper half of the bolt and the upper bolt tapered hole and the middle bolt tapered hole are interference fit. At this time, there is no gap between the bolt and the upper bolt tapered hole and the middle bolt tapered hole, and no shaking will occur between the bucket ear and the bucket shaft after being connected by bolts. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a structural diagram of the utility model.
[0012] Figure 2 This is a structural exploded view of the present invention.
[0013] Figure 3 This is a structural exploded view of the present invention from another angle.
[0014] Figure 4 It is a cross-sectional view of the present utility model. DETAILED DESCRIPTION
[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0016] Reference Figures 1 to 4A bucket lug and bucket shaft connection assembly includes a bucket lug 1, a bucket shaft 2, and a bolt 3. The bucket lug 1 is provided with a shaft hole 4 extending therethrough. The bucket lug 1 is provided with an upper bolt tapered hole 5 and a lower bolt hole 6 connected to the shaft hole 4. The upper bolt tapered hole 5 and the lower bolt hole 6 are located above and below the shaft hole 4, respectively. The inner diameter of the upper bolt tapered hole 5 gradually decreases from top to bottom, while the inner diameter of the lower bolt hole 6 remains unchanged. A middle bolt tapered hole 7 is provided on the left side of the bucket shaft 2. The inner diameter of the middle bolt tapered hole 7 gradually decreases from top to bottom. The left side of the bucket shaft 2 is located within the shaft hole 4. The upper half of the bolt 3 is a tapered section 31, and the lower half 32 of the bolt 3 is a vertical section. The bolt 3 sequentially passes through the upper bolt tapered hole 5, the middle bolt tapered hole 7, and the lower bolt hole 6. The height of the upper half 31 of the bolt 3 is greater than the sum of the lengths of the upper and middle bolt tapered holes 5 and 7. The upper half 31 of the bolt 3 has an interference fit with the upper and middle bolt tapered holes 5 and 7. The lower half 32 of the bolt 3 is provided with a threaded section 33 that connects to the nut 8. In this embodiment, two middle bolt tapered holes 7 are provided, arranged on the left and right sides. The provision of two middle bolt tapers 7 allows bucket shafts 2 of different lengths to be connected to the shaking ear 1. If the taper of one middle bolt 7 is more severe, the other middle bolt taper 7 can be used to connect with the bucket shaft.
[0017] Reference Figures 1 to 4 A shaft sleeve 9 is provided in the right half 41 of the shaft hole 4, and the left part of the bucket shaft 2 passes through the shaft sleeve 9. The right half 41 of the shaft hole 4 is a tapered shaft hole, and the inner diameter of the tapered shaft hole gradually decreases from right to left. The inner diameter of the left half 42 of the shaft hole 4 remains unchanged. A step surface 43 is provided at the junction between the left half 42 of the shaft hole 4 and the right half 41 of the shaft hole 4. The shaft sleeve 9 is a tapered shaft sleeve, and the outer diameter of the shaft sleeve 9 gradually decreases from right to left. The shaft sleeve 9 is interference fit with the right half 41 of the shaft hole 4, and the left end face of the shaft sleeve 9 conflicts with the step surface 43. When the shaft sleeve 9 is assembled with the shaft hole 4, the shaft sleeve 9 is first inserted into the right half 41 of the shaft hole 4, and then the shaft sleeve 9 is further tightened to the right half 41 of the shaft hole 4. After the shaft sleeve 9 is tightened, its left end surface contacts the step surface 43. The shaft sleeve 9 can prevent wear between the bucket ear 1 and the bucket shaft 2. Compared with replacing the bucket ear 1, the process of replacing the shaft sleeve 9 is simpler.
[0018] Reference Figures 1 to 4 The design principle of the present utility model is as follows: when the bucket ear 1 is connected to the bucket shaft 2, the bolt 3 is sequentially passed through the upper bolt tapered hole 5, the middle bolt tapered hole 7 and the lower bolt hole 6, and then the bolt 3 is tightened so that the upper half 31 of the bolt 3 and the upper bolt tapered hole 5 and the middle bolt tapered hole 7 have an interference fit. At this time, there is no gap between the bolt 3 and the upper bolt tapered hole 5 and the middle bolt tapered hole 7, and the bucket ear 1 and the bucket shaft 2 will not shake after being connected by the bolt 3.
[0019] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.
Claims
1. A bucket ear and bucket shaft connection assembly, characterized by: The cam is provided with a plurality of camming holes, each of which is connected to the camming hole by a threaded hole, and a plurality of camming holes are connected to the camming hole by a threaded hole.
2. The bucket ear and bucket shaft connection assembly according to claim 1, characterized in that: A shaft sleeve is arranged in the right half of the shaft hole, and the left part of the bucket shaft passes through the shaft sleeve.
3. The bucket ear and bucket shaft connection assembly according to claim 2, characterized in that: The right half of the shaft hole is a tapered shaft hole, the inner diameter of which decreases gradually from right to left, the inner diameter of the left half of the shaft hole remains unchanged, a step surface is provided at the junction between the left half of the shaft hole and the right half of the shaft hole, the shaft sleeve is a tapered shaft sleeve, the outer diameter of which decreases gradually from right to left, the shaft sleeve is interference fit with the right half of the shaft hole, and the left end face of the shaft sleeve conflicts with the step surface.
4. The bucket ear and bucket shaft connection assembly according to claim 1, characterized in that: There are two middle bolt tapered holes, which are arranged on the left and right.