Working device and excavator

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a working device and an excavator. The working device comprises a bucket arm, a bucket, a pressing plate and a first connecting assembly. The bucket arm is used for being connected with an excavator body. The bucket is rotationally arranged on the bucket arm, and the bucket rotates relative to the bucket arm so as to dig up objects to be cleaned; the pressing plate is rotationally arranged on the bucket. The first connecting assembly comprises at least one first connecting rod, at least one second connecting rod and at least one third connecting rod, and the first connecting rods are rotationally arranged on the pressing plate; the second connecting rod is rotationally arranged on the bucket, and the third connecting rod is rotationally arranged on the bucket arm. The second connecting rod rotates relative to the bucket, and the third connecting rod rotates relative to the bucket arm, so that the first connecting rod pushes the pressing plate to rotate relative to the bucket, and the pressing plate extrudes objects to be cleaned in the bucket. According to the working device and the excavator, the water content of sludge can be reduced through the working device, and stacking and transportation are convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical equipment, and in particular to a working device and an excavator. BACKGROUND

[0002] Due to rainfall, weathering and other natural phenomena, soil erosion in the riverbank and upstream areas will cause silt to be washed into the river channel and gradually deposited to form sludge. Excessive accumulation of sludge can affect the navigability, water quality and ecosystem of the river channel, and therefore, a regular dredging of the river channel is required using an excavator.

[0003] In the prior art, the excavator includes an excavator body, a boom and a bucket, the bucket is connected to the excavator body through the boom, the excavator body drives the boom to extend to the sludge area, so that the bucket contacts the sludge, and then the bucket is driven to rotate relative to the boom, so that the bucket digs up the sludge, and finally the bucket is moved to a designated unloading area to unload the sludge.

[0004] However, the sludge has a high water content and is difficult to stack and transport. CONTENT OF THE INVENTION

[0005] The present application provides a working device and an excavator, which can reduce the water content of sludge, facilitate stacking and facilitate transportation.

[0006] In a first aspect, the present application provides a working device, comprising: a boom, a bucket, a pressing plate and a first connecting assembly, the boom is used to connect with an excavator body; the bucket is rotationally arranged on the boom, and the bucket rotates relative to the boom to dig up the material to be cleaned; the pressing plate is rotationally arranged on the bucket.

[0007] The first connecting assembly comprises: at least one first connecting rod, at least one second connecting rod and at least one third connecting rod, the first connecting rod is rotationally arranged on the pressing plate; the second connecting rod is rotationally arranged on the bucket, and the first connecting rod is rotationally connected with the second connecting rod; the third connecting rod is rotationally arranged on the boom, and the third connecting rod is rotationally connected with the second connecting rod.

[0008] The second connecting rod rotates relative to the bucket, and the third connecting rod rotates relative to the boom, so as to push the pressing plate to rotate relative to the bucket through the first connecting rod, so that the pressing plate extrudes the material to be cleaned in the bucket.

[0009] In a possible implementation, the working device provided by the present application, the first connecting rod and the third connecting rod are connected at the same position of the second connecting rod.

[0010] In a possible implementation, the working device provided in the present application includes two first connecting rods, two second connecting rods and two third connecting rods, and the two first connecting rods, the two second connecting rods and the two third connecting rods are symmetrically arranged on two sides of the bucket arm.

[0011] In a possible implementation, the working device provided in the present application includes at least one cutting edge arranged on the edge of the pressing plate, and the cutting edge is used for cutting the plants around the periphery of the material to be cleaned.

[0012] In a possible implementation, the working device provided in the present application includes two cutting edges, and the two cutting edges are respectively arranged on opposite sides of the pressing plate.

[0013] In a possible implementation, the working device provided in the present application includes at least one drainage groove arranged on the bucket.

[0014] In a possible implementation, the working device provided in the present application includes an inclined surface arranged on the bucket, and the inclined surface is inclined towards a side away from the bucket arm.

[0015] In a possible implementation, the working device provided in the present application further includes a driving member, the driving member is connected to the bucket arm and the bucket, and the driving member drives the bucket to rotate relative to the bucket arm.

[0016] In a possible implementation, the working device provided in the present application further includes a second connecting assembly, the second connecting assembly includes a first connecting member and a second connecting member, the first connecting member is rotationally connected to the bucket, the second connecting member is rotationally connected to the bucket arm, and the second connecting member and the driving member are both rotationally connected to the first connecting member.

[0017] In a second aspect, the present application also provides a excavator, which includes a excavator body and any of the working devices provided in the first aspect and arranged on the excavator body.

[0018] The working device and the excavator provided in the present application include the bucket arm, the bucket, the pressing plate and the first connecting assembly, the bucket arm is used for being connected to the excavator body, the bucket is rotationally arranged on the bucket arm, and the pressing plate is rotationally arranged on the bucket. The first connecting assembly includes at least one first connecting rod, at least one second connecting rod and at least one third connecting rod, the first connecting rod is rotationally arranged on the pressing plate, the second connecting rod is rotationally arranged on the bucket, and the third connecting rod is rotationally arranged on the bucket arm. The first connecting rod and the third connecting rod are both rotationally connected to the second connecting rod. When the bucket rotates relative to the bucket arm, the bucket can dig up the sludge; at the same time, the bucket can drive the second connecting rod and the third connecting rod to synchronously rotate, thereby driving the first connecting rod to synchronously move, and the first connecting rod can drive the pressing plate to rotate relative to the bucket, so that the pressing plate extrudes the sludge in the bucket, thereby reducing the water content of the sludge, facilitating stacking and convenient transportation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 The structural schematic diagram of the working device provided by the embodiments of the present application is shown in the following figure.

[0021] Figure 2 The structural schematic diagram of the working device provided by the embodiments of the present application is shown in the following figure. Figure 1 The structural schematic diagram of the working device provided by the embodiments of the present application is shown in the following figure.

[0022] Explanation of reference signs:

[0023] 100 - bucket arm

[0024] 200 - bucket; 210 - drainage groove; 220 - inclined surface

[0025] 300 - pressing plate; 310 - cutting edge

[0026] 400 - first connecting assembly; 410 - first connecting rod; 420 - second connecting rod; 430 - third connecting rod

[0027] 500 - driving member

[0028] 600 - second connecting assembly; 610 - first connecting piece; 620 - second connecting piece

[0029] The specific embodiments of the present application have been shown by the above-mentioned drawings, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] Firstly, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0031] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] As shown in the background section, in the prior art, an excavator includes an excavator body, a stick, and a bucket. The bucket is connected to the excavator body via the stick. The excavator body drives the stick to extend to the silt area, so that the bucket contacts the silt. Then, the excavator body drives the bucket to rotate relative to the stick, so that the bucket digs up the silt. Finally, the bucket is moved to a designated unloading area to unload the silt.

[0035] However, the silt has a high water content, making it difficult to pile up and transport.

[0036] Based on this, the working device and excavator provided in this application include a bucket arm, a bucket, a pressure plate, and a first connecting assembly. The bucket arm is connected to the excavator body, the bucket is rotatably mounted on the bucket arm, and the pressure plate is rotatably mounted on the bucket. The first connecting assembly includes at least one first connecting rod, at least one second connecting rod, and at least one third connecting rod. The first connecting rod is rotatably mounted on the pressure plate, the second connecting rod is rotatably mounted on the bucket, and the third connecting rod is rotatably mounted on the bucket arm. Both the first and third connecting rods are rotatably connected to the second connecting rod. When the bucket rotates relative to the bucket arm, it can scoop up silt. Simultaneously, the bucket can drive the second and third connecting rods to rotate synchronously, thereby driving the first connecting rod to move synchronously. The first connecting rod can push the pressure plate to rotate relative to the bucket, so that the pressure plate squeezes the silt inside the bucket, thereby reducing the water content of the silt, making it easier to stack and transport.

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0038] Figure 1 This is a schematic diagram of the working device provided in the embodiments of this application; Figure 2 for Figure 1 A structural diagram of another state. It should be noted that... Figure 1 and Figure 2 These are all schematic diagrams of a front shovel. The working device provided in this application embodiment is also applicable to backhoes, and each component can be arranged symmetrically with the front shovel.

[0039] The working device provided in this application refers to... Figure 1 and Figure 2 As shown, it includes: a boom 100, a bucket 200, a pressure plate 300, and a first connecting assembly 400. The boom 100 is used to connect to an excavator; the bucket 200 is rotatably mounted on the boom 100 and rotates relative to the boom 100 to dig up the object to be cleaned; the pressure plate 300 is rotatably mounted on the bucket 200.

[0040] The first connecting assembly 400 includes: at least one first connecting rod 410, at least one second connecting rod 420, and at least one third connecting rod 430. The first connecting rod 410 is rotatably mounted on the pressure plate 300; the second connecting rod 420 is rotatably mounted on the bucket 200, and the first connecting rod 410 and the second connecting rod 420 are rotatably connected; the third connecting rod 430 is rotatably mounted on the boom 100, and the third connecting rod 430 is rotatably connected to the second connecting rod 420.

[0041] The second connecting rod 420 rotates relative to the bucket 200, and the third connecting rod 430 rotates relative to the boom 100, so as to push the pressure plate 300 to rotate relative to the bucket 200 through the first connecting rod 410, so that the pressure plate 300 squeezes the material to be cleaned in the bucket 200.

[0042] It should be noted that the material to be cleaned can be silt, mud, soil, and garbage with high water content, or other substances. This application embodiment does not impose too many restrictions on this. This application embodiment uses silt as an example to illustrate the working device.

[0043] Specifically, the boom 100 connects the bucket 200 to the excavator, and the boom 100 provides support and power transmission for the bucket 200 to extend the bucket 200 to the target area and enable the bucket 200 to move and rotate within a certain range.

[0044] The bucket 200 is used to excavate and contain silt. The bucket 200 rotates relative to the boom 100 to adjust the angle during the excavation and unloading of silt, enabling it to quickly scoop up the silt and dump it to a designated location.

[0045] It should be noted that the pressure plate 300 is rotatably mounted on the bucket 200. The pressure plate 300 squeezes the sludge inside the bucket 200, which can remove excess water from the sludge, reduce the water content of the sludge, and improve its convenience for stacking and transportation.

[0046] Since the second connecting rod 420 connects to the bucket 200 and the third connecting rod 430 connects to the boom 100, and the third connecting rod 430 is rotatably connected to the second connecting rod 420, when the bucket 200 rotates relative to the boom 100, it can drive the second connecting rod 420 and the third connecting rod 430, which are located between the bucket 200 and the boom 100, to rotate synchronously. Furthermore, since the first connecting rod 410 is rotatably connected to the second connecting rod 420, the second connecting rod 420 can drive the first connecting rod 410 to move synchronously. Since the first connecting rod 410 connects to the pressure plate 300, and the pressure plate 300 is rotatably connected to the bucket 200, the first connecting rod 410 can push the pressure plate 300 to rotate relative to the bucket 200, allowing the pressure plate 300 to rotate flexibly within the bucket 200 relative to its own axis. This allows the pressure plate 300 to compress the silt within the bucket 200, thereby reducing the water content of the silt, facilitating stacking, and making transportation easier.

[0047] For example, the pressure plate 300 can be hinged to the bucket 200, the first connecting rod 410 can be hinged to the pressure plate 300 and the second connecting rod 420 respectively, the third connecting rod 430 can be hinged to the boom 100 and the second connecting rod 420 respectively, and the second connecting rod 420 can be hinged to the bucket 200.

[0048] Reference Figure 1 As shown, when sludge needs to be dredged, the bucket 200 rotates clockwise relative to the boom 100, and the bucket 200 dredges the sludge. At the same time, the bucket 200 drives the second connecting rod 420 to rotate clockwise and the third connecting rod 430 to rotate counterclockwise. Thus, the second connecting rod 420 pushes the pressure plate 300 to rotate counterclockwise through the first connecting rod 410 until the pressure plate 300 comes into contact with the sludge inside the bucket 200. The pressure plate 300 squeezes the sludge to reduce its water content.

[0049] Reference Figure 2 As shown, when it is necessary to unload sludge, the bucket 200 rotates counterclockwise relative to the boom 100. The bucket 200 drives the second connecting rod 420 to rotate counterclockwise, and the third connecting rod 430 to rotate clockwise. Thus, the second connecting rod 420 pulls the pressure plate 300 to rotate clockwise through the first connecting rod 410. The pressure plate 300 moves away from the sludge in the bucket 200, and the sludge is removed from the bucket 200.

[0050] Understandably, compared to the high water content of silt when using excavators for dredging in existing technologies, the working device and excavator provided in this application embodiment have a working device consisting of a boom 100, a bucket 200, a pressure plate 300, and a first connecting assembly 400. The boom 100 is used to connect to the excavator body, the bucket 200 is rotatably mounted on the boom 100, and the pressure plate 300 is rotatably mounted on the bucket 200. The first connecting assembly 400 includes at least one first connecting rod 410, at least one second connecting rod 420, and at least one third connecting rod 430. The first connecting rod 410 is rotatably mounted on the pressure plate 300, the second connecting rod 420 is rotatably mounted on the bucket 200, and the third connecting rod 430 is rotatably mounted on the boom 100. Both the first connecting rod 410 and the third connecting rod 430 are rotatably connected to the second connecting rod 420. When the bucket 200 rotates relative to the boom 100, the bucket 200 can scoop up silt. At the same time, the bucket 200 can drive the second connecting rod 420 and the third connecting rod 430 to rotate synchronously. Thus, the second connecting rod 420 drives the first connecting rod 410 to move synchronously. The first connecting rod 410 can push the pressure plate 300 to rotate relative to the bucket 200, so that the pressure plate 300 squeezes the silt in the bucket 200, thereby reducing the water content of the silt, making it easier to stack and transport.

[0051] In some embodiments, refer to Figure 1 As shown, the first connecting rod 410 and the third connecting rod 430 are both connected to the same position of the second connecting rod 420.

[0052] Specifically, connecting at the same location can reduce the relative movement between different connection points, making the force transmission path more direct, improving the force transmission efficiency, reducing energy loss, ensuring that the movement of the pressure plate 300 within the bucket 200 is more synchronized and precise, and improving the squeezing effect.

[0053] By reducing the number of connection points, the structure can be simplified, and the complexity of manufacturing and maintenance can be reduced.

[0054] In some embodiments, refer to Figure 1 As shown, there are two of each of the first connecting rod 410, the second connecting rod 420, and the third connecting rod 430. The two first connecting rods 410, the two second connecting rods 420, and the two third connecting rods 430 are symmetrically arranged on both sides of the bucket arm 100.

[0055] It should be noted that the symmetrical arrangement can effectively balance the forces exerted on the bucket 200 and the pressure plate 300 during operation, reduce tilting or deformation caused by unilateral force, reduce the possibility of material fatigue and damage, and improve the stability and durability of the entire working device.

[0056] It should also be noted that, due to the symmetrical distribution of force, the bucket 200 and the pressure plate 300 can maintain a stable trajectory during operation, reducing vibration and swaying, thereby improving operational accuracy and efficiency. The symmetrical arrangement also provides better motion control, allowing the pressure plate 300 to maintain consistent pressure and angle when squeezing sludge, improving dewatering efficiency.

[0057] In some embodiments, refer to Figure 1 and Figure 2 As shown, the edge of the pressure plate 300 is provided with at least one cutting edge 310, which is used to cut the plants around the object to be cleaned.

[0058] Specifically, the vegetation surrounding the object to be cleaned can be aquatic plants, which may entangle and accumulate inside the bucket 200, causing equipment blockage and operational interruptions. The cutting edge 310 can promptly cut and remove aquatic plants inside the bucket 200, preventing them from tangling on the equipment, reducing the risk of blockage, ensuring continuous operation of the equipment, reducing wear and tear and failure rates, thereby reducing maintenance and repair costs. By promptly cutting the aquatic plants, the need for operators to manually clean the equipment is reduced, thus improving operational safety.

[0059] It should be noted that by cutting aquatic plants, the pressure plate 300 can more directly contact and compress the silt, improving the dewatering effect and the quality of silt treatment.

[0060] In some embodiments, refer to Figure 1 and Figure 2 As shown, there are two cutting edges 310, which are located on opposite sides of the pressure plate 300.

[0061] In a specific implementation, the pressure plate 300 can be rectangular. If the side of the pressure plate 300 closest to the bucket arm 100 is the first side, the side opposite to the first side is the second side, and the other two sides are the third and fourth sides respectively, then a cutting edge 310 can be set on the third and fourth sides.

[0062] In some embodiments, cutting edges 310 may be provided on the second, third and fourth sides of the pressure plate 300. This application embodiment does not impose too many restrictions on this.

[0063] In some embodiments, refer to Figure 1 As shown, the bucket 200 is provided with at least one drainage groove 210.

[0064] Understandably, by setting a drainage trough 210 on the bucket 200, a drainage channel is provided for the water in the sludge inside the bucket 200. When the pressure plate 300 squeezes the sludge, some of the water in the sludge can be discharged from the bucket 200 through the drainage trough 210, thereby reducing the water content of the sludge.

[0065] For example, the number of drainage channels 210 can be one or more, and this application embodiment does not impose too many restrictions on this.

[0066] For example, the shape of the drainage trough 210 can be rectangular, circular, or triangular, or other shapes. This application embodiment does not impose too many restrictions on this.

[0067] In some embodiments, refer to Figure 1 As shown, the bucket 200 has an inclined surface 220, which is inclined toward the side away from the boom 100.

[0068] It should be noted that by setting an inclined surface 220 on the bucket 200, when the bucket 200 digs up silt, the inclined surface 220 contacts the river channel, which can reduce the resistance encountered by the bucket 200 during the digging process, making it easier for the bucket 200 to cut into the silt and improve digging efficiency.

[0069] In some embodiments, refer to Figure 1 and Figure 2 As shown, the working device also includes a drive unit 500, which connects the boom 100 and the bucket 200. The drive unit 500 drives the bucket 200 to rotate relative to the boom 100.

[0070] Specifically, by setting up a drive unit 500, power is provided to the bucket 200. The drive unit 500 can drive the bucket 200 to rotate at different angles relative to the boom 100, allowing the operator to adjust the position and angle of the bucket 200 more flexibly. By precisely positioning the bucket 200, the digging and unloading of silt can achieve better results and improve the accuracy of the operation.

[0071] For example, the drive component 500 can be a hydraulic cylinder or other drive device, and the embodiments of this application do not impose too many restrictions on it.

[0072] In some embodiments, refer to Figure 1 and Figure 2 As shown, the working device also includes a second connecting assembly 600, which includes a first connecting member 610 and a second connecting member 620. The first connecting member 610 is rotatably connected to the bucket 200, and the second connecting member 620 is rotatably connected to the boom 100. The second connecting member 620 and the drive member 500 are both rotatably connected to the first connecting member 610.

[0073] Understandably, through the coordinated action of the first connector 610 and the second connector 620, the force from the drive unit 500 can be transmitted more effectively, ensuring that the bucket 200 can operate precisely at the required angle and position, thereby improving work efficiency.

[0074] The first connector 610 and the second connector 620 can also achieve a smoother motion transition, reduce impact and vibration during movement, and improve the stability of operation.

[0075] This application also provides an excavator, including an excavator body and any working device disposed on the excavator body.

[0076] The specific structure and working method of the working device have been described in detail in the above embodiments, and will not be repeated here.

[0077] Those skilled in the art will understand that the working device and excavator provided in this application include a boom 100, a bucket 200, a pressure plate 300, and a first connecting assembly 400. The boom 100 is connected to the excavator body, the bucket 200 is rotatably mounted on the boom 100, and the pressure plate 300 is rotatably mounted on the bucket 200. The first connecting assembly 400 includes at least one first connecting rod 410, at least one second connecting rod 420, and at least one third connecting rod 430. The first connecting rod 410 is rotatably mounted on the pressure plate 300, the second connecting rod 420 is rotatably mounted on the bucket 200, and the third connecting rod 430 is rotatably mounted on the boom 100. Both the first connecting rod 410 and the third connecting rod 430 are rotatably connected to the second connecting rod 420. When the bucket 200 rotates relative to the boom 100, the bucket 200 can scoop up silt. At the same time, the bucket 200 can drive the second connecting rod 420 and the third connecting rod 430 to rotate synchronously. Thus, the second connecting rod 420 drives the first connecting rod 410 to move synchronously. The first connecting rod 410 can push the pressure plate 300 to rotate relative to the bucket 200, so that the pressure plate 300 squeezes the silt in the bucket 200, thereby reducing the water content of the silt, making it easier to stack and transport.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0080] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A working device, characterized in that, include: The boom (100) is used to connect to the excavator body; A bucket (200) is rotatably mounted on the boom (100), and the bucket (200) rotates relative to the boom (100) to dig up the object to be cleaned; The pressure plate (300) is rotatably mounted on the bucket (200); The first connection component (400) includes: At least one first connecting rod (410) is rotatably mounted on the pressure plate (300); At least one second connecting rod (420) is rotatably mounted on the bucket (200), and the first connecting rod (410) is rotatably connected to the second connecting rod (420); At least one third connecting rod (430) is rotatably mounted on the bucket arm (100), and the third connecting rod (430) is rotatably connected to the second connecting rod (420); The second connecting rod (420) rotates relative to the bucket (200), and the third connecting rod (430) rotates relative to the bucket arm (100) so as to push the pressure plate (300) to rotate relative to the bucket (200) through the first connecting rod (410), so that the pressure plate (300) squeezes the object to be cleaned in the bucket (200).

2. The working device according to claim 1, characterized in that, The first connecting rod (410) and the third connecting rod (430) are both connected to the same position of the second connecting rod (420).

3. The working device according to claim 2, characterized in that, The number of the first connecting rod (410), the second connecting rod (420) and the third connecting rod (430) are all two, and the two first connecting rods (410), the two second connecting rods (420) and the two third connecting rods (430) are symmetrically arranged on both sides of the bucket arm (100).

4. The working device according to any one of claims 1 to 3, characterized in that, The edge of the pressure plate (300) is provided with at least one cutting edge (310), which is used to cut the plants around the object to be cleaned.

5. The working device according to claim 4, characterized in that, The number of the cutting edges (310) is two, and the two cutting edges (310) are located on opposite sides of the pressure plate (300).

6. The working device according to any one of claims 1 to 3, characterized in that, The bucket (200) is provided with at least one drainage trough (210).

7. The working device according to claim 6, characterized in that, The bucket (200) has an inclined surface (220) that is inclined toward the side away from the boom (100).

8. The working device according to any one of claims 1 to 3, characterized in that, It also includes a drive unit (500) that connects the boom (100) and the bucket (200) and drives the bucket (200) to rotate relative to the boom (100).

9. The working device according to claim 8, characterized in that, It also includes a second connecting assembly (600), which includes a first connecting member (610) and a second connecting member (620). The first connecting member (610) is rotatably connected to the bucket (200), and the second connecting member (620) is rotatably connected to the boom (100). The second connecting member (620) and the drive member (500) are both rotatably connected to the first connecting member (610).

10. An excavator, characterized in that, It includes an excavator body and a working device as described in any one of claims 1 to 9, which is mounted on the excavator body.

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