A walking cleaning device for a wheel-bucket excavator of an open-pit coal mine

Abstract

The present application relates to the technical field of excavator, and more particularly to a walking cleaning device for wheel-bucket excavator in open-pit coal mine, which comprises the following steps: determining the form of the cleaning device according to the amount and distribution position of coal blocks scattered below the wheel-bucket excavator in open-pit coal mine; changing the inclination angle of the cleaning device to change the form of the cleaning device; and controlling the cleaning device to clean the coal blocks below the wheel-bucket excavator in open-pit coal mine, wherein the form of the cleaning device has a bucket form and a shovel form, wherein the bucket form is that the connecting point of the bucket rod part is located on the upper side of the bucket body part, and the shovel form is that the connecting point of the bucket rod part is located on the lower side of the bucket body part. The installation seat is moved along the upper surface of the arc-shaped plate by the power element, so that the position of the bucket rod part fixed with the installation seat on the bucket body part is different, thereby switching the use form of the bucket body part, and the coal blocks during the use of the wheel-bucket excavator in open-pit coal mine are cleaned and collected.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, and more particularly to a walking and cleaning device for an open-pit coal mine bucket wheel excavator. Background Technology

[0002] Bucket wheel excavators are a type of rock and soil stripping equipment used in open-pit coal mines. During open-pit mining operations, the bucket wheel excavates, carrying material into the receiving hopper, and then transfers it to the lower conveyor belt system via the receiving arm and discharge arm. Because the bucket wheel excavator excavates material using the bucket on the bucket wheel, the bucket wheel carries the material upwards to the receiving hopper during excavation.

[0003] When the bucket wheel is in operation, it spills material from the bucket wheel and bucket, which falls to the ground and forms a mound. When the bucket wheel excavator finishes mining and moves forward, the mound will affect the movement of the tracks, requiring the bucket wheel excavator to be removed from the working face and leveled and maintained by engineering machinery before it can continue to move forward, which seriously affects the operating efficiency of the bucket wheel excavator. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the existing open-pit coal mine bucket wheel excavator walking and cleaning devices, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a walking cleaning device for open-pit coal mine bucket wheel excavators, which aims to clean and collect coal blocks generated during the operation of the bucket wheel excavator.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for cleaning using a bucket wheel excavator in an open-pit coal mine, comprising the following steps, The form of the cleaning device is determined based on the amount and location of coal chunks scattered under the bucket wheel excavator in the open-pit coal mine. Changing the tilt angle of the cleaning device alters its shape. When the bucket wheel excavator in the open-pit coal mine is moving, the control cleaning device cleans the coal mine below the bucket wheel excavator.

[0008] As a preferred embodiment of the open-pit coal mine bucket excavator walking and cleaning method of the present invention, the cleaning device has the form of a digging bucket and a shovel bucket, wherein in the digging bucket form, the connection point of the stick component is located on the upper side of the bucket body component; and in the shovel bucket form, the connection point of the stick component is located on the lower side of the bucket body component.

[0009] The beneficial effects of the open-pit coal mine bucket wheel excavator walking and cleaning method of the present invention are as follows: When there is a large amount of coal scattered under the open-pit coal mine bucket wheel excavator and it is relatively concentrated, the bucket form can be used to scoop up the accumulated coal and put it back into the transportation equipment. When the amount of scattered coal is small and not very concentrated, the bucket form can be used to collect the coal.

[0010] The present invention also provides the following technical solution: a walking and cleaning device for an open-pit coal mine bucket wheel excavator, comprising the aforementioned walking and cleaning method for an open-pit coal mine bucket wheel excavator, and further comprising a bucket body component, which includes a toothed seat and toothed plates installed on the upper and lower sides of the toothed seat, a connecting plate provided between the two toothed plates, and a switching component installed on the back of the bucket body component, which includes an arc-shaped plate installed on the back of the toothed seat, and a mounting seat that moves along the outer wall of the arc-shaped plate. The mounting seat moves on a rack inside the arc-shaped plate through a power component. When the power component moves to either end of the arc-shaped plate, it connects with a transmission component provided at that end to drive the connecting plate to move, thereby switching the toothed plates to expand or contract. The contraction of the toothed plates locks the position of the mounting seat through a self-locking component.

[0011] As a preferred embodiment of the open-pit coal mine bucket excavator walking and cleaning device of the present invention, wherein: the upper and lower sides of the tooth seat are provided with receiving grooves, and the tooth plate is hinged in the receiving groove for folding and receiving therein; the tooth seat has a moving cavity for connecting the two receiving grooves, and the connecting plate moves along the moving cavity.

[0012] As a preferred embodiment of the open-pit coal mine bucket excavator walking and cleaning device of the present invention, wherein: the arc-shaped plate has an arc-shaped cavity inside, the mounting base moves along the arc-shaped cavity by means of a sliding foot, the rack is installed inside the arc-shaped cavity, the power component includes a first gear, the first gear meshes with the rack, a motor is installed on the mounting base, and the output end of the motor is fixedly connected to the first gear.

[0013] As a preferred embodiment of the open-pit coal mine bucket excavator walking and cleaning device of the present invention, wherein: a second gear of the transmission component is provided at each end of the arc-shaped cavity, the second gear meshes with the first gear, and the second gear meshes with the first tooth groove opened on the back of the connecting plate.

[0014] As a preferred embodiment of the open-pit coal mine bucket excavator walking and cleaning device of the present invention, wherein: a second tooth groove is provided at each end of the outer wall of the connecting plate, and a third gear is provided on the hinge shaft of the tooth plate, the third gear meshing with the second tooth groove to drive the tooth plate to rotate.

[0015] As a preferred embodiment of the open-pit coal mine bucket wheel excavator walking and cleaning device of the present invention, wherein: the tooth seat is further provided with a cavity, the self-locking member is rotatably disposed in the cavity, the self-locking member includes an arc-shaped lever and a plug rod disposed at one end of the arc-shaped lever, the plug rod is inserted into the locking hole inside the mounting base, and the other end of the arc-shaped lever is disposed in the receiving groove.

[0016] As a preferred embodiment of the open-pit coal mine bucket excavator walking and cleaning device of the present invention, it further includes a stick component installed on the switching component. The stick component includes a stick body and a hydraulic cylinder installed on the stick body. Mounting rings are also installed on the outer wall of the mounting base at both ends, and the stick body is installed on the mounting rings.

[0017] The beneficial effects of the present invention are as follows: the power component drives the mounting base to move along the upper surface of the arc plate, so that the position of the stick component fixed to the mounting base on the bucket body component is different, thereby switching the usage mode of the bucket body component and cleaning and collecting coal blocks when the open-pit mine bucket excavator is used. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the open-pit coal mine bucket wheel excavator walking and cleaning device of the present invention.

[0019] Figure 2 This is a schematic diagram of the bucket body and switching components of the open-pit coal mine bucket excavator traveling and cleaning device of the present invention. Figure 1 .

[0020] Figure 3 This is a schematic diagram of the bucket body and switching components of the open-pit coal mine bucket excavator traveling and cleaning device of the present invention. Figure 2 .

[0021] Figure 4 This is a cross-sectional schematic diagram of the bucket body component and switching component structure of the open-pit coal mine bucket excavator traveling and cleaning device of the present invention. Figure 1 .

[0022] Figure 5 This is a cross-sectional schematic diagram of the bucket body component and switching component structure of the open-pit coal mine bucket excavator traveling and cleaning device of the present invention. Figure 2 .

[0023] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0024] Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0025] Figure 8 for Figure 4 Enlarged schematic diagram of the structure at point C. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] Example 1 Reference Figure 1-3 This is the first embodiment of the present invention, which provides a method for cleaning using a bucket wheel excavator in an open-pit coal mine, comprising the following steps. The form of the cleaning device is determined based on the amount and location of coal chunks scattered under the bucket wheel excavator in the open-pit coal mine. The tilt angle of the cleaning device is changed, which changes the shape of the cleaning device. The cleaning device has two shapes: a digging bucket shape and a shovel bucket shape. In the digging bucket shape, the connection point of the stick component 300 is located on the upper side of the bucket body component 100. In the shovel bucket shape, the connection point of the stick component 300 is located on the lower side of the bucket body component 100.

[0031] When the bucket wheel excavator in the open-pit coal mine is moving, the control cleaning device cleans the coal mine below the bucket wheel excavator.

[0032] In this embodiment, when there is a large amount of coal scattered below the bucket excavator in an open-pit coal mine, and the coal is relatively concentrated, the bucket can be used directly to scoop up the piled coal and put it back into the transport equipment. When there is a small amount of scattered coal, and the coal is not very concentrated, the bucket can be used to collect the coal.

[0033] Example 2 Reference Figure 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that: a walking and cleaning device for an open-pit coal mine bucket excavator includes a bucket body component 100, which includes a toothed seat 101 and toothed plates 102 installed on the upper and lower sides of the toothed seat 101. A connecting plate 103 is provided between the two toothed plates 102. A switching component 200 is installed on the back of the bucket body component 100, which includes an arc-shaped plate 201 installed on the back of the toothed seat 101 and a mounting seat 202 that moves along the outer wall of the arc-shaped plate 201. The mounting seat 202 moves on a rack 204 inside the arc-shaped plate 201 via a power component 203. When the power component 203 moves to any end of the arc-shaped plate 201, it is connected to a transmission component 205 provided at that end to drive the connecting plate 103 to move and switch the toothed plates 102 to expand or contract. The contraction of the toothed plates 102 is locked to the position of the mounting seat 202 by a self-locking component 206.

[0034] In this embodiment, the power component 203 drives the mounting base 202 to move along the upper surface of the arc plate 201, so that the position of the boom component 300 fixed to the mounting base 202 on the bucket body component 100 is different, thereby switching the usage mode of the bucket body component 100 and cleaning and collecting coal blocks when the open-pit mine bucket excavator is used.

[0035] Example 3 Reference Figure 2-7This is the third embodiment of the present invention, which differs from the second embodiment in that: a walking and cleaning device for an open-pit coal mine bucket wheel excavator, wherein an arc-shaped cavity 201a is provided inside the arc-shaped plate 201, the mounting base 202 moves along the arc-shaped cavity 201a via the sliding foot 202a, a rack 204 is installed inside the arc-shaped cavity 201a, the power component 203 includes a first gear 203a, the first gear 203a meshes with the rack 204, and a motor 203b is installed on the mounting base 202, the output end of the motor 203b is fixedly connected to the first gear 203a.

[0036] It should be noted that the mounting base 202 has a T-shaped sliding foot 202a inside, and the arc-shaped cavity 201a inside the arc-shaped plate 201 also has a T-shaped cross-section. This allows the mounting base 202 to move within the arc-shaped cavity 201a via the sliding foot 202a, ensuring stability and smooth movement of the mounting base 202 on the arc-shaped plate 201. Simultaneously, a rack 204 is provided on the bottom surface inside the arc-shaped cavity 201a, and the first gear 203a meshes and rotates on this rack 204, thereby driving the mounting base 202 to move along the arc-shaped plate 201. The arc-shaped plate 201 is designed to have a certain degree of flexibility, allowing for a small range of bending, similar to a steel plate.

[0037] In this embodiment, the motor 203b is started to rotate, and the motor 203b drives the first gear 203a to rotate through the output shaft. The first gear 203a rotates on the rack 204. The first gear 203a is mounted on the mounting base 202, so the mounting base 202 moves along the upper surface of the arc plate 201, moving the mounting base 202 between the upper and lower ends of the arc plate 201.

[0038] Example 4 Reference Figure 2-7 This is the fourth embodiment of the present invention, which differs from the third embodiment in that: a walking and cleaning device for an open-pit coal mine bucket wheel excavator, wherein a second gear 205a of a transmission component 205 is provided at each end of the arc-shaped cavity 201a, the second gear 205a meshes with a first gear 203a, and the second gear 205a meshes with a first tooth groove 103a opened on the back of the connecting plate 103. A second tooth groove 103b is opened at each end of the outer wall of the connecting plate 103, and a third gear 205b is provided on the hinge shaft 102a of the toothed plate 102, the third gear 205b meshing with the second tooth groove 103b, for driving the toothed plate 102 to rotate. The tooth base 101 has receiving grooves 104 on both its upper and lower sides, and the tooth plate 102 is hinged in the receiving groove 104 for folding and being stored therein. The tooth base 101 has a moving cavity 101a inside for connecting the two receiving grooves 104, and the connecting plate 103 moves along the moving cavity 101a. It should be noted that each end of the connecting plate 103 is provided with a second tooth groove 103b, which is used to mesh with the corresponding third gear 205b, thereby driving the hinged tooth plate 102 in the receiving groove 104 to flip over, so as to flip the tooth plate 102 in or out of the receiving groove 104, so as to realize the use of the tooth plate 102 in different positions under different forms.

[0039] The connecting plate 103 is provided with two first tooth grooves 103a. The first tooth grooves 103a mesh with the second gear 205a. When the first gear 203a drives the second gear 205a to rotate, the second gear 205a drives the connecting plate 103 to move through the first tooth grooves 103a on the connecting plate 103. This controls the toothed plates 102 at both ends of the connecting plate 103, thereby achieving the flipping control of the two toothed plates 102 at both ends.

[0040] Since the toothed plate 102 is rotatably mounted in the receiving groove 104 via the hinge shaft 102a102a, when the toothed plate 102 comes into contact with the coal block during the use of the toothed seat 101, the force is transmitted through the hinge shaft 102a102a, ensuring the normal use of the toothed plate 102 on the toothed seat 101, thus ensuring that the toothed plate 102 can be used in either the digging bucket state or the shovel bucket state.

[0041] In this embodiment, when the motor 203b drives the first gear 203a to rotate counterclockwise, the first gear 203a moves along the rack 204 to the upper end, moving the mounting base 202 from the lower end of the arc-shaped plate 201 to the upper end. When the first gear 203a reaches the upper end of the rack 204, it meshes with the second gear 205a at that location, thus driving the second gear 205a to rotate. The second gear 205a also meshes with the first tooth groove 103a on the outer surface of the connecting plate 103, causing the clockwise rotating second gear 205a to move along the first tooth groove 103a, thus moving the connecting plate 103 along the moving cavity 101a, thereby connecting the... The connecting plate 103 moves upward. The upward movement of the connecting plate 103 drives the third gear 205b on the upper gear plate 102 to rotate through the second tooth groove 103b at the front end. The rotation of the third gear 205b drives the upper gear plate 102 to rotate through the hinge shaft 102a, thereby flipping the gear plate 102 and storing it inside the receiving groove 104. At the same time, the second tooth groove 103b at the lower end drives the third gear 205b on the lower gear plate 102 to rotate. The rotation of the third gear 205b drives the lower gear plate 102 to rotate through the hinge shaft 102a, thereby flipping the gear plate 102 out of the receiving groove 104, thus changing the shape of the bucket component 100 into a bucket shape.

[0042] When motor 203b drives the first gear 203a to rotate clockwise, the first gear 203a moves along the rack 204 to the lower end, moving the mounting base 202 from the upper end to the lower end of the arc-shaped plate 201. When the first gear 203a reaches the lower end of the rack 204, it meshes with the second gear 205a at that point, causing the first gear 203a to drive the second gear 205a to rotate. The second gear 205a also meshes with the first tooth groove 103a on the outer surface of the connecting plate 103, causing the counterclockwise rotating second gear 205a to move along the first tooth groove 103a, thus moving the connecting plate 103 along the moving cavity 101a. As the connecting plate 103 moves downward, the second toothed groove 103b at the front end drives the third gear 205b on the upper toothed plate 102 to rotate. The rotation of the third gear 205b drives the upper toothed plate 102 to rotate via the hinge shaft 102a, thereby flipping the toothed plate 102 out of the receiving groove 104. At the same time, the second toothed groove 103b at the lower end drives the third gear 205b on the lower toothed plate 102 to rotate as well. The rotation of the third gear 205b drives the lower toothed plate 102 to rotate via the hinge shaft 102a, thereby flipping the toothed plate 102 back into the receiving groove 104, thus changing the shape of the bucket component 100 into a bucket shape.

[0043] Example 5 Reference Figure 2-7 This is the sixth embodiment of the present invention, which differs from the fourth embodiment in that: a walking and cleaning device for an open-pit coal mine bucket wheel excavator, wherein a cavity 101b is further provided inside the tooth seat 101, and a self-locking member 206 is rotatably disposed in the cavity 101b. The self-locking member 206 includes an arc-shaped lever 206a and a plug rod 206b disposed at one end of the arc-shaped lever 206a. The plug rod 206b is inserted into the locking hole 202b inside the mounting base 202, and the other end of the arc-shaped lever 206a is disposed in the receiving groove 104.

[0044] In this embodiment, when the toothed plate 102 is flipped and received into the receiving groove 104, the toothed plate 102 presses down on one end of the arc-shaped lever 206a located in the receiving groove 104, so that the other end of the arc-shaped lever 206a moves in the opposite direction under the rotation of the shaft, thereby moving the other end of the arc-shaped lever 206a upward, inserting the plug rod 206b of the arc-shaped lever 206a into the internal locking hole 202b of the mounting base 202, thereby locking the position of the mounting base 202 on the arc-shaped plate 201, and only then will the motor 203b stop rotating.

[0045] Conversely, when the motor 203b reverses, since the mounting base 202 is locked, the first gear 203a still only meshes with the second gear 205a, driving the second gear 205a to rotate in the opposite direction. The second gear 205a drives the connecting plate 103 to move in the opposite direction through the first tooth groove 103a. The reverse movement of the connecting plate 103 drives the toothed plate 102 to rotate in the opposite direction, so that the toothed plate 102 flips out from the receiving groove 104 and disengages from one end of the arc-shaped lever 206a. As a result, the arc-shaped lever 206a reverses under the action of the internal torsion spring, disengaging the plug rod 206b from the lock hole 202b, thus unlocking the mounting base 202 from the arc-shaped plate 201. At this time, the first gear 203a can move along the rack 204 to the other side, realizing the form switching of the bucket body component 100.

[0046] Example 6 Reference Figure 1 This is the seventh embodiment of the present invention. The difference between this embodiment and the fifth embodiment is that: a walking and cleaning device for an open-pit coal mine bucket excavator, which further includes a stick component 300 installed on the switching component 200. The stick component 300 includes a stick body 301 and a hydraulic cylinder 302 installed on the stick body 301. Mounting rings 202c are also installed on the outer wall of the mounting base 202 near both ends. The stick body 301 is installed on the mounting rings 202c.

[0047] It should be noted that by controlling the hydraulic cylinder 302 on the boom assembly 300 to extend and retract to different degrees, the angle between the two mounting rings 202c on the mounting base 202 is changed, thereby changing the tilt angle of the mounting base 202 and the angle of the tooth seat 101, so as to cooperate with the bucket body assembly 100 of different shapes for the equipment to shovel and dig.

[0048] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0049] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A walking and cleaning device for an open-pit coal mine bucket wheel excavator, characterized in that: include, The bucket body component (100) includes a toothed seat (101) and toothed plates (102) installed on the upper and lower sides of the toothed seat (101), and a connecting plate (103) is provided between the two toothed plates (102). A switching component (200) is installed on the back of the bucket body component (100). It includes an arc plate (201) installed on the back of the toothed seat (101) and a mounting seat (202) that moves along the outer wall of the arc plate (201). The mounting seat (202) moves on the rack (204) inside the arc plate (201) via a power component (203). When the power component (203) moves to any end of the arc plate (201), it is connected to a transmission component (205) provided at that end to drive the connecting plate (103) to move and switch the toothed plate (102) to unfold or retract. The retraction of the toothed plate (102) locks the position of the mounting seat (202) through a self-locking component (206).

2. The open-pit coal mine bucket wheel excavator walking and cleaning device according to claim 1, characterized in that: The tooth base (101) has receiving grooves (104) on both its upper and lower sides, and the tooth plate (102) is hinged in the receiving grooves (104) for folding and receiving therein.

3. The open-pit coal mine bucket wheel excavator walking and cleaning device according to claim 2, characterized in that: The toothed seat (101) has a movable cavity (101a) for connecting the two receiving slots (104), and the connecting plate (103) moves along the movable cavity (101a).

4. The open-pit coal mine bucket wheel excavator walking and cleaning device according to claim 3, characterized in that: The arc-shaped plate (201) has an arc-shaped cavity (201a) inside. The mounting base (202) moves along the arc-shaped cavity (201a) via a sliding foot (202a). The rack (204) is installed inside the arc-shaped cavity (201a). The power component (203) includes a first gear (203a) that meshes with the rack (204). A motor (203b) is installed on the mounting base (202), and the output end of the motor (203b) is fixedly connected to the first gear (203a).

5. The open-pit coal mine bucket wheel excavator walking and cleaning device according to claim 4, characterized in that: At each end of the arc-shaped cavity (201a), there is a second gear (205a) of the transmission component (205). The second gear (205a) meshes with the first gear (203a) and meshes with the first tooth groove (103a) opened on the back of the connecting plate (103).

6. The walking and cleaning device for an open-pit coal mine bucket wheel excavator according to claim 5, characterized in that: The outer wall of the connecting plate (103) is provided with a second tooth groove (103b) at both ends, and a third gear (205b) is provided on the hinge shaft (102a) of the tooth plate (102). The third gear (205b) meshes with the second tooth groove (103b) to drive the tooth plate (102) to rotate.

7. The open-pit coal mine bucket wheel excavator walking and cleaning device according to claim 3 or 6, characterized in that: The toothed seat (101) is further provided with a cavity (101b), and the self-locking member (206) is rotatably disposed in the cavity (101b). The self-locking member (206) includes an arc-shaped lever (206a) and a plug rod (206b) disposed at one end of the arc-shaped lever (206a). The plug rod (206b) is inserted into the locking hole (202b) inside the mounting base (202), and the other end of the arc-shaped lever (206a) is disposed in the receiving groove (104).

8. The open-pit coal mine bucket wheel excavator walking and cleaning device according to claim 5 or 6, characterized in that: It also includes a boom assembly (300) mounted on the switching component (200), the boom assembly (300) including a boom body (301) and a hydraulic cylinder (302) mounted on the boom body (301), and mounting rings (202c) are also mounted on the outer wall of the mounting base (202) at both ends, and the boom body (301) is mounted on the mounting rings (202c).

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