Bucket rod structure
By welding the side plates in the stick and adjusting the weld position, and removing the bent plates, the problem of insufficient strength of the existing stick structure is solved, which significantly improves the overall strength of the stick and the stability of the weld.
Patent Information
- Application Number
- CN202422127111.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-30
AI Technical Summary
Existing excavator sticks are prone to break due to cracking of welds when they are subjected to large stresses, resulting in insufficient structural strength.
By welding the side plates from the front side plates and the rear side plates, the number of welds is reduced, and the welds between the front side plates and the rear side plates are close to the middle support to keep them away from the rear support, thereby reducing the number of welds around the rear support. At the same time, one end of the bottom plate close to the tail plate extends to the rear side of the rear support and bends upwards to weld and fix it with the bottom end of the tail plate, removing the bent plate and reducing the risk of welds.
It effectively improves the overall structural strength of the rod, reduces the risk of weld cracking, and avoids the phenomenon of the rod breaking when under heavy stress.
Smart Images
Figure CN223034092U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of excavators, and particularly relates to a boom structure. Background Art
[0002] Hydraulic excavators are widely used in mechanized construction in many fields, such as transportation, water conservancy, farmland renovation, urban construction, and mine excavation. It mainly consists of a traveling device, a slewing device, a working device, and a hydraulic control circuit. Among them, the working device realizes various operation tasks, such as excavation, leveling, and lifting. The working device is composed of a bucket, a boom, and a boom. The boom is connected to the slewing device, and each part is driven by a corresponding hydraulic cylinder to realize corresponding operations.
[0003] Among them, the boom connects the bucket and the boom and is an important component of the excavator. As Figure 2 shown, the existing excavator boom is enclosed by a top plate, a bottom plate, side plates, a gusset plate, and a bent plate to form a box structure. The box structure is also provided with a front support, a middle support, and a rear support. The side plates include a front side plate, a middle side plate, and a rear side plate. Among them, the weld (at point A) between the middle side plate and the rear side plate, the weld (at point B) between the bent plate and the bottom plate, the weld (at point C) between the bent plate and the tail plate, and the weld (at point D) between the top plate and the tail plate are all located around the rear support. The rear support is connected to the boom and needs to bear a large stress. There are many welds around the rear support, which reduces the structural strength here and is prone to cracking from the welds when bearing a large stress, resulting in boom fracture. Summary of the Utility Model
[0004] Aiming at the defects or deficiencies in the prior art, the utility model provides a boom structure, which can improve the overall structural strength of the boom and avoid boom fracture when bearing a large stress.
[0005] To achieve the above object, the utility model adopts the following technical solutions:
[0006] An embodiment of the utility model provides a boom structure, including a top plate, a bottom plate, a tail plate, and two side plates. The top plate, the bottom plate, the tail plate, and the two side plates enclose a box structure, and the box structure is also provided with a front support, a middle support, and a rear support;
[0007] The side plate is formed by welding a front side plate and a rear side plate, and the weld between the front side plate and the rear side plate is located between the middle support and the rear support and is close to the middle support.
[0008] Further, the top plate and the bottom plate are respectively located on the upper and lower sides of the two side plates and are welded and fixed to the two side plates, and the tail plate is welded and fixed to the rear ends of the two side plates.
[0009] Further, the front support is welded and fixed to the front end of the box structure, and the front support is used to connect with the excavator bucket.
[0010] Furthermore, the middle support is arranged close to the front support, and both ends of the middle support are fixedly welded to the two side plates respectively.
[0011] Furthermore, the rear support is located at the rear end of the box structure, and both ends of the rear support are fixedly welded to the two side plates respectively. The rear support is used to connect with the boom of the excavator.
[0012] Furthermore, two supports are fixedly welded to the outer surface of the tail plate, and the two supports are arranged in parallel.
[0013] Furthermore, two first shaft holes are symmetrically arranged at one end of the two supports close to the top plate, and are connected to the bucket cylinder through the two first shaft holes.
[0014] Furthermore, two second shaft holes are symmetrically arranged at one end of the two supports close to the bottom plate, and are connected to the arm cylinder through the two second shaft holes.
[0015] Furthermore, both ends of the middle support are fixedly welded to the front side plate respectively, and both ends of the rear support are fixedly welded to the rear side plate respectively.
[0016] Furthermore, one end of the bottom plate close to the tail plate extends to the rear side of the rear support and bends upward to be fixedly welded to the bottom end of the tail plate.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0018] 1. In the present utility model, the side plate is formed by butt-welding the front side plate and the rear side plate, reducing the number of side plate welds. Moreover, the weld between the front side plate and the rear side plate is close to the middle support, making the weld away from the rear support, thus avoiding excessive welds around the rear support from affecting the overall structural strength.
[0019] 2. In the present utility model, one end of the bottom plate close to the tail plate extends to the rear side of the rear support and bends upward to be fixedly welded to the bottom end of the tail plate, removing the bent plate in the arm of the prior art. While reducing the welds, the weld between the bottom plate and the tail plate is away from the rear support, thereby reducing the risk of weld cracking. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic diagram of the structure of the arm in the embodiment of the present utility model;
[0021] Figure 2 is a schematic diagram of the structure of the arm in the prior art;
[0022] Among them, 1. top plate; 2. bottom plate; 3. tail plate; 4. front support; 5. middle support; 6. rear support; 7. support; 8. first shaft hole; 9. second shaft hole; 10. front side plate; 11. rear side plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0024] A typical embodiment of the present utility model is as follows Figure 1 As shown, a boom structure includes a top plate 1, a bottom plate 2, side plates, and a tail plate 3. There are two side plates, and the two side plates are arranged in parallel. The top plate 1 and the bottom plate 2 are respectively located on the upper and lower sides of the two side plates and are welded and fixed to the two side plates. The tail plate 3 is welded and fixed to the rear ends of the two side plates. The top plate 1, the bottom plate 2, the tail plate 3, and the two side plates enclose a box structure.
[0025] The box structure is further provided with a front support 4, a middle support 5, and a rear support 6. The front support 4 is welded and fixed to the front end of the box structure. The front support 4 is used to connect with the excavator bucket. The middle support 5 is arranged close to the front support 4. The two ends of the middle support 5 are respectively welded and fixed to the two side plates. The rear support 6 is located at the rear end of the box structure. The two ends of the rear support 6 are respectively welded and fixed to the two side plates. The rear support 6 is used to connect with the excavator boom.
[0026] Two supports 7 are welded and fixed to the outer surface of the tail plate 3. The two supports 7 are arranged in parallel. Two first shaft holes 8 are symmetrically arranged at one end of the two supports 7 close to the top plate 1 and are connected with the bucket cylinder through the two first shaft holes 8. Two second shaft holes 9 are symmetrically arranged at one end of the two supports 7 close to the bottom plate 2 and are connected with the boom cylinder through the two second shaft holes 9.
[0027] The side plate is formed by welding a front side plate 10 and a rear side plate 11. The two ends of the middle support 5 are respectively welded and fixed to the front side plate 10, and the two ends of the rear support 6 are respectively welded and fixed to the rear side plate 11. The weld between the front side plate 10 and the rear side plate 11 is located between the middle support 5 and the rear support 6 and is arranged close to the middle support 5.
[0028] The side plate in the present utility model is formed by welding a front side plate 10 and a rear side plate 11, which reduces the number of side plate welds. Moreover, the weld between the front side plate 10 and the rear side plate 11 is close to the middle support 5, making the weld far from the rear support 6, thus avoiding excessive welds around the rear support 6 from affecting the overall structural strength.
[0029] One end of the bottom plate 2 close to the tail plate 3 extends to the rear side of the rear support 6 and bends upward to be welded and fixed to the bottom end of the tail plate 3. While reducing the welds, the weld between the bottom plate 2 and the tail plate 3 is far from the rear support 6, thereby reducing the risk of weld cracking.
[0030] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various modifications and changes can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A boom structure, characterized in that: It includes a top plate, a bottom plate, a tail plate and two side plates, which together form a box structure, and the box structure is also provided with a front support, a middle support and a rear support; The side plate is formed by welding a front side plate and a rear side plate, and the weld between the front side plate and the rear side plate is located between the middle support and the rear support, and is arranged close to the middle support.
2. A boom structure according to claim 1, characterized in that: The top plate and the bottom plate are respectively located at the upper and lower sides of the two side plates and are welded and fixed to the two side plates. The tail plate is welded and fixed to the rear ends of the two side plates.
3. A boom structure according to claim 1, characterized in that: The front support is welded and fixed to the front end of the box structure, and the front support is used to be connected to the excavator bucket.
4. A boom structure according to claim 1, characterized in that: The middle support is arranged close to the front support, and two side plates at both ends of the middle support are respectively welded and fixed.
5. A boom structure according to claim 1, characterized in that: The rear support is located at the rear end of the box structure, and the two ends of the rear support are respectively welded and fixed to the two side plates. The rear support is used to be connected to the excavator boom.
6. A boom structure according to claim 1, characterized in that: Two supports are welded and fixed on the outer surface of the tail plate, and the two supports are arranged in parallel.
7. A boom structure according to claim 6, characterized in that: Two first shaft holes are symmetrically arranged at one end of the two supports close to the top plate, and are connected to the bucket cylinder through the two first shaft holes.
8. A boom structure according to claim 6, characterized in that: Two second shaft holes are symmetrically arranged at one end of the two supports close to the bottom plate, and are connected to the boom oil cylinder through the two second shaft holes.
9. A boom structure according to claim 1, characterized in that: The two ends of the middle support are respectively welded and fixed to the front side plate, and the two ends of the rear support are respectively welded and fixed to the rear side plate.
10. The arm structure according to claim 1, characterized in that: One end of the bottom plate close to the tail plate extends to the rear side of the rear support, and is bent upward and welded to the bottom end of the tail plate.