Working device of wheel excavator

Abstract

The working device of the wheel excavator comprises a movable arm, a bucket rod and an excavator bucket which are rotationally connected to an excavator body, one end of the movable arm is rotationally connected with the bucket rod, the other end of the bucket rod is rotationally connected with the excavator bucket through a swing assembly, and swing of the movable arm, swing of the bucket rod and swing of the excavator bucket are driven by a first oil cylinder, a second oil cylinder and a third oil cylinder respectively. According to the structure, the upper plate piece, the lower plate piece, the side plate pieces, the longitudinal reinforcing plate, the connecting plate, the first side plate, the second side plate, the third side plate, the fourth side plate, the connector, the first connecting reinforcing plate, the second connecting reinforcing plate and the transverse reinforcing rib of the movable arm are matched, so that the overall structural strength of the movable arm can be improved; through cooperation of the bucket rod rear reinforcing plate, the bucket rod front reinforcing plate and the bucket rod inner reinforcing plate of the bucket rod, the structural strength of the end of the bucket rod can be improved, and therefore the problems of deformation, cracking and other faults in the using process can be prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of working devices for excavators, and in particular to a working device for a wheeled excavator. Background Technology

[0002] The working device of an excavator includes a boom, stick, and bucket, all driven by hydraulic cylinders. The boom and stick are primarily used to control the digging and loading actions of the bucket. The boom, which is connected to the frame, is longer and is commonly referred to as the boom; the boom, which is connected to the bucket, is shorter and is commonly referred to as the arm.

[0003] However, the boom of traditional working devices is mostly made by welding the edges of multiple plates together. Since excavators are mostly used for high-intensity digging in engineering construction scenarios, the working device is prone to deformation, cracking and other failures at the welded joints during use. Utility Model Content

[0004] This utility model discloses a working device for a wheeled excavator, which mainly solves the problem that the working device of a traditional excavator is prone to deformation and cracking at the weld joints during construction.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a working device for a wheeled excavator, including a boom, a stick, and a bucket rotatably connected to the excavator body. One end of the boom is rotatably connected to the stick, and the other end of the stick is rotatably connected to the bucket via a swing assembly. The swinging of the boom, stick, and bucket is driven by a first hydraulic cylinder, a second hydraulic cylinder, and a third hydraulic cylinder, respectively.

[0007] The boom has a frame connection area, a bending area, and a rod connection area arranged sequentially in the direction near the stick. The boom includes an upper plate, a lower plate, side plates welded to both sides between the upper and lower plates, and a main connecting shaft located at the end of the boom corresponding to the frame connection area. The upper and lower plates are integrally bent. The side plates corresponding to the frame connection area are composed of a first side plate and a second side plate. The side plates corresponding to the bending area are composed of a third side plate. The side plates corresponding to the main connection area are composed of a fourth side plate and a connector. A first connecting reinforcing plate is provided between the second, third, and fourth side plates. A second connecting reinforcing plate is provided between the first and second side plates. A transverse reinforcing rib is provided between the first side plates of the two side plates. A longitudinal reinforcing plate is provided between the upper and lower plates at the positions corresponding to the frame connection area, bending area, and rod connection area. A connecting plate is provided at the end of the upper and lower plates corresponding to the frame connection area.

[0008] A rear reinforcing plate is welded to one end of the stick that is rotatably connected to the boom, and a front reinforcing plate is welded to one end of the stick that is connected to the bucket. An inner reinforcing plate is provided inside the stick near the boom, and the inner reinforcing plate is welded to the side plate of the stick.

[0009] In one embodiment, a reinforcing support is provided at one end of the boom near the stick. The reinforcing support includes a lower support plate and an upper support plate. The two ends of the lower support plate and the upper support plate are respectively fixed by bolts. The lower support plate is supported on the lower surface of the lower plate and the upper support plate is supported on the upper surface of the upper plate.

[0010] In one embodiment, the bucket includes a bucket body, on which a reinforcing connection assembly is provided. The reinforcing connection assembly includes ear plates symmetrically welded to the bucket body, and two connecting columns are provided between the two ear plates. The two connecting columns are rotatably connected to a swing assembly and a boom, respectively. Reinforcing cross plates are welded to the two ear plates, and multiple arc-shaped reinforcing plates are provided on the reinforcing cross plates along the arc surface of the bucket body.

[0011] In one embodiment, the swing assembly includes a first link rotatably connected to the boom and a second link rotatably connected to the connecting column, the first link and the second link being rotatably connected.

[0012] In one embodiment, the upper support plate is provided with a hanging component, and the hanging component is provided with a hanging hole.

[0013] In one embodiment, the hanger is provided with a protective plate, which is attached to the side plate.

[0014] The advantages or beneficial effects of the above technical solution include at least the following: the overall structural strength of the boom can be increased by the cooperation of the upper plate, lower plate, side plate, longitudinal reinforcing plate, connecting plate, first side plate, second side plate, third side plate, fourth side plate, connector, first connecting reinforcing plate, second connecting reinforcing plate and transverse reinforcing rib; and the structural strength of the stick end can be increased by the cooperation of the stick rear reinforcing plate, stick front reinforcing plate and stick inner reinforcing plate, thereby preventing deformation, cracking and other failure problems during use. Attached Figure Description

[0015] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0016] Figure 1 A schematic diagram of a working device according to an exemplary embodiment of the present invention is shown;

[0017] Figure 2 An exploded view of a boom according to an exemplary embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of a pole according to an exemplary embodiment of the present invention is shown;

[0019] Figure 4 A cross-sectional schematic diagram of a boom according to an exemplary embodiment of the present invention is shown;

[0020] Figure 5 An exploded view of a bucket according to an exemplary embodiment of the present invention is shown;

[0021] Figure 6 A schematic diagram of a reinforcing support member according to an exemplary embodiment of the present invention is shown.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Boom; 1A. Frame connection area; 1B. Bending area; 1C. Pole connection area;

[0024] 11. Upper plate; 12. Lower plate; 13. Side plate; 131. First side plate; 132. Second side plate; 133. Third side plate; 134. Fourth side plate; 135. Connector; 136. First connecting reinforcement plate; 137. Second connecting reinforcement plate; 138. Transverse reinforcing rib; 14. Main connecting shaft;

[0025] 15. Longitudinal reinforcing plate; 16. Connecting plate;

[0026] 2. Fighting pole;

[0027] 21. Rear reinforcing plate of the stick; 22. Front reinforcing plate of the stick; 23. Inner reinforcing plate of the stick;

[0028] 3. Excavator bucket;

[0029] 31. Bucket body; 32. Reinforcing connecting assembly; 321. Ear plate; 322. Connecting column; 323. Reinforcing cross plate; 324. Arc-shaped reinforcing plate;

[0030] 4. Swing component;

[0031] 41. First link; 42. Second link;

[0032] 5. Strengthen supporting components;

[0033] 51. Lower support plate; 52. Upper support plate; 53. U-bolt; 54. Hanger; 541. Hanging hole; 55. Protective plate;

[0034] 6. First hydraulic cylinder;

[0035] 7. Second hydraulic cylinder;

[0036] 8. Third oil cylinder. Detailed Implementation

[0037] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0038] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0040] It should be noted that the terms "a" and "a plurality of" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0041] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0042] See Figures 1 to 4 The present invention provides a working device for a wheeled excavator, including a boom 1, a stick 2 and a bucket 3 rotatably connected to the excavator body. One end of the boom 1 is rotatably connected to the stick 2, and the other end of the stick 2 is rotatably connected to the bucket 3 through a swing assembly 4. The swing of the boom 1, the stick 2 and the bucket 3 is driven by a first hydraulic cylinder 6, a second hydraulic cylinder 7 and a third hydraulic cylinder 8, respectively.

[0043] The boom 1, near the stick 2, is sequentially provided with a frame connection area 1A, a bending area 1B, and a stick connection area 1C. The boom 1 includes an upper plate 11, a lower plate 12, side plates 13 welded to both sides between the upper plate 11 and the lower plate 12, and a main body connecting shaft 14 located at the end of the frame connection area 1A corresponding to the boom 1. The upper plate 11 and the lower plate 12 are both integrally bent. The side plate 13 corresponding to the frame connection area 1A is composed of a first side plate 131 and a second side plate 132. The side plate 13 corresponding to the bending area 1B is composed of a third side plate 133. The side plate 13 corresponding to the main body connection area 1C is composed of a fourth side plate 132. The device consists of a side plate 134 and a connector 135. A first connecting reinforcing plate 136 is provided between the second side plate 132, the third side plate 133 and the fourth side plate 134. A second connecting reinforcing plate 137 is provided between the first side plate 131 and the second side plate 132. A transverse reinforcing rib 138 is provided between the first side plates 131 of the two side plate members 13. A longitudinal reinforcing plate 15 is provided between the upper plate member 11 and the lower plate member 12 at the positions corresponding to the frame connection area 1A, the bending area 1B and the pole connection area 1C. A connecting plate 16 is provided between the upper plate member 11 and the lower plate member 12 at the positions corresponding to the ends of the frame connection area 1A.

[0044] A rear reinforcing plate 21 is welded to one end of the stick 2 that is rotatably connected to the boom 1, and a front reinforcing plate 22 is welded to one end of the stick 2 that is connected to the bucket 3. An inner reinforcing plate 23 is provided inside the stick 2 near the boom 1, and the inner reinforcing plate 23 is welded to the side plate of the stick 2.

[0045] By adopting the above structure, the overall structural strength of the boom 1 can be increased through the cooperation of the upper plate 11, lower plate 12, side plate 13, longitudinal reinforcing plate 15, connecting plate 16, first side plate 131, second side plate 132, third side plate 133, fourth side plate 134, connector 135, first connecting reinforcing plate 136, second connecting reinforcing plate 137 and transverse reinforcing rib 138. The structural strength of the end of the stick 2 can be increased through the cooperation of the rear reinforcing plate 21, front reinforcing plate 22 and inner reinforcing plate 23 of the stick 2, thereby preventing deformation, cracking and other failures during use.

[0046] In one embodiment, see Figure 1 and Figure 6A reinforcing support 5 is provided at the end of the boom 1 near the stick 2. The reinforcing support 5 includes a lower support plate 51 and an upper support plate 52. The two ends of the lower support plate 51 and the upper support plate 52 are fixed by U-bolts 53. The lower support plate 51 is supported on the lower surface of the lower plate 12, and the upper support plate 52 is supported on the upper surface of the upper plate 11. In practical application, the cooperation of the lower support plate 51 and the upper support plate 52 of the reinforcing support 5 can improve the strength of the end where the boom 1 is connected to the stick 2, thus protecting this position and preventing deformation, cracking, and other malfunctions.

[0047] The upper support plate 52 is provided with a hanger 54, and the hanger 54 is provided with a hanging hole 541. In practical applications, the hanging hole 541 of the hanger 54 makes it easy to hang a lifting rope to lift heavy objects.

[0048] A protective plate 55 is provided on the hanger 54, and the protective plate 55 is in contact with the side plate 13. In actual use, the protective plate 55 can support the hanger 54 and protect the side of the boom 1.

[0049] In one embodiment, see Figure 1 and Figure 5 The bucket 3 includes a bucket body 31, on which a reinforcing connection assembly 32 is provided. The reinforcing connection assembly 32 includes ear plates 321 symmetrically welded to the bucket body 31, and two connecting posts 322 are provided between the two ear plates 321. The two connecting posts 322 are rotatably connected to the swing assembly 4 and the boom 2, respectively. Reinforcing cross plates 323 are welded to the two ear plates 321, and multiple arc-shaped reinforcing plates 324 are provided on the reinforcing cross plates 323 along the arc surface of the bucket body 31. In practical applications, by providing reinforcing cross plates 323 and arc-shaped reinforcing plates 324 on the two ear plates 321, the connection stability between the ear plates 321 and the bucket body 31 can be improved, and the bucket body 31 can be supported and protected, thereby improving the support capacity of the bucket body 31.

[0050] In one embodiment, see Figure 1 The swing assembly 4 includes a first connecting rod 41 rotatably connected to the boom 2 and a second connecting rod 42 rotatably connected to the connecting column 322. The first connecting rod 41 and the second connecting rod 42 are rotatably connected. The output end of the third hydraulic cylinder 8 is rotatably connected to the connection between the first connecting rod 41 and the second connecting rod 42. In practical application, the cooperation between the first connecting rod 41 and the second connecting rod 42 enables the third hydraulic cylinder 8 to drive the bucket 3 to swing.

[0051] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0052] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above-described invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A working device for a wheeled excavator, characterized in that, It includes a boom, stick, and bucket rotatably connected to the body of the excavator. One end of the boom is rotatably connected to the stick, and the other end of the stick is rotatably connected to the bucket through a swing assembly. The swing of the boom, stick, and bucket is driven by a first hydraulic cylinder, a second hydraulic cylinder, and a third hydraulic cylinder, respectively. The boom has a frame connection area, a bending area, and a rod connection area arranged sequentially in the direction near the stick. The boom includes an upper plate, a lower plate, side plates welded to both sides between the upper and lower plates, and a main connecting shaft located at the end of the boom corresponding to the frame connection area. The upper and lower plates are integrally bent. The side plates corresponding to the frame connection area are composed of a first side plate and a second side plate. The side plates corresponding to the bending area are composed of a third side plate. The side plates corresponding to the main connection area are composed of a fourth side plate and a connector. A first connecting reinforcing plate is provided between the second, third, and fourth side plates. A second connecting reinforcing plate is provided between the first and second side plates. A transverse reinforcing rib is provided between the first side plates of the two side plates. A longitudinal reinforcing plate is provided between the upper and lower plates at the positions corresponding to the frame connection area, bending area, and rod connection area. A connecting plate is provided at the end of the upper and lower plates corresponding to the frame connection area. A rear reinforcing plate is welded to one end of the stick that is rotatably connected to the boom, and a front reinforcing plate is welded to one end of the stick that is connected to the bucket. An inner reinforcing plate is provided inside the stick near the boom, and the inner reinforcing plate is welded to the side plate of the stick.

2. The working device of the wheeled excavator as described in claim 1, characterized in that, A reinforcing support is provided at one end of the boom near the stick. The reinforcing support includes a lower support plate and an upper support plate. The two ends of the lower support plate and the upper support plate are respectively fixed by U-bolts. The lower support plate is supported on the lower surface of the lower plate, and the upper support plate is supported on the upper surface of the upper plate.

3. The working device of the wheeled excavator as described in claim 1, characterized in that, The bucket includes a bucket body, on which a reinforcing connection assembly is provided. The reinforcing connection assembly includes ear plates symmetrically welded to the bucket body. Two connecting columns are provided between the two ear plates. The two connecting columns are rotatably connected to the swing assembly and the bucket stick, respectively. Reinforcing cross plates are welded to the two ear plates. Multiple arc-shaped reinforcing plates are provided on the reinforcing cross plates along the arc surface of the bucket body.

4. The working device of the wheeled excavator as described in claim 3, characterized in that, The swing assembly includes a first link rotatably connected to the boom and a second link rotatably connected to the connecting column, wherein the first link and the second link are rotatably connected.

5. The working device of the wheeled excavator as described in claim 2, characterized in that, The upper support plate is provided with a hanging device, and the hanging device is provided with a hanging hole.

6. The working device of the wheeled excavator as described in claim 5, characterized in that, The hanger is equipped with a protective plate, which is attached to the side panel.

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