Protection mechanism and bucket wheel machine body unattended control cabinet

By designing circulating fans and air circulation components in the bucket turbine to prevent dust from accumulating heat at the cable connection, and simplifying the maintenance process through hinges and flipable mounting plates, the heat accumulation and maintenance problems at the cable connection are solved and the stability of the equipment is improved Sex and work efficiency.

CN222235185UActive Publication Date: 2024-12-24INNER MONGOLIA DATANG INT TUOKETUO POWER GENERATION
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Patent Information

Application Number
CN202323011997.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-11-08
Publication Date
2024-12-24
Estimated Expiration
2033-11-08

AI Technical Summary

Technical Problem

The bucket turbine is prone to heat accumulation at the cable connections in humid and dusty environments, which are difficult to repair, and is prone to corrosion, affecting the normal operation and working efficiency of the equipment.

Method used

A protective mechanism is designed, including circulating fans, air circulation components, guide blocks, air intake fans, exhaust fans, filter elements and guide grooves, etc., to prevent dust from accumulation of heat through air circulation and filtration functions, and can be used to prevent heat from being accumulated through hinges and The flipped mounting plate simplifies the maintenance process.

Benefits of technology

Effectively prevent dust from heat accumulation, improve heat dissipation effect at cable connections, reduce corrosion risks, facilitate staff to carry out maintenance, and improve the stability and service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a protection mechanism and an unattended control cabinet of a bucket wheel machine body in the technical field of bucket wheel machines, and the protection mechanism comprises a heat dissipation part which comprises a cabinet body, a circulating fan arranged at the top of the inner wall of the cabinet body, an air circulation assembly arranged in the cabinet body, and a flow guide block arranged at the bottom of the inner wall of the cabinet body; the installation part comprises a terminal strip arranged in the cabinet body, a supporting assembly arranged at the bottom of the terminal strip and sliding assemblies arranged on the two sides of the supporting assembly, air in the cabinet body is driven to flow through the circulating fan, dust does not stay on the surface of the terminal strip, external air can be sucked into the cabinet body through the air inlet fan, and therefore the dust can be prevented from entering the cabinet body. External air dissipates heat of the terminal strip, hot air in the cabinet body is discharged out of the cabinet body through the exhaust fan, and air in the cabinet body circulates through cooperation of the circulating fan, the air inlet fan and the exhaust fan, so that the heat dissipation effect is enhanced.
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Description

Technical Field

[0001] The utility model relates to the technical field of bucket wheel machines, in particular to a protection mechanism. Background Art

[0002] Bucket wheel excavator, also known as bucket wheel stacker and reclaimer, is a large mobile machinery used for stacking, conveying and leveling bulk materials. It is widely used in coal, thermal power plants, ports, steel, cement and other industries as well as large water conservancy construction sites.

[0003] Bucket wheel machine requires a large number of cable connections for operation. Since the working environment of the coal yard is humid and filled with a lot of dust, dust easily accumulates at the cable connections, causing heat accumulation, affecting the normal operation of the bucket wheel machine. It is inconvenient for staff to check the cable connections, which makes maintenance work difficult. The cable connections of the bucket wheel machine are prone to corrosion. The internal space of a general control cabinet is relatively blocked and the wiring harness is messy. Therefore, a control cabinet with dustproof, moisture-proof and water-flushing functions is required to uniformly manage a large number of cable connections. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the fact that the above-mentioned prior art has the problem that the coal yard working environment is humid and filled with a large amount of dust, and the dust is easily accumulated at the cable connection, causing heat accumulation, the present utility model is proposed.

[0006] Therefore, the utility model aims to provide a protection mechanism, the purpose of which is to remove dust and prevent dust from accumulating at the cable connection to cause heat accumulation.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a protection mechanism, including a heat dissipation component, including a cabinet, a circulating fan arranged at the top of the inner wall of the cabinet, an air circulation component arranged in the cabinet, and a guide block arranged at the bottom of the inner wall of the cabinet; an installation component, including a terminal block arranged in the cabinet, a supporting component arranged at the bottom of the terminal block, and a sliding component arranged on both sides of the supporting component.

[0008] As a preferred solution of the protection mechanism described in the utility model, the air circulation component includes an air inlet opened on one side of the cabinet, an exhaust port opened on the other side of the cabinet, an air inlet member arranged at the air inlet, and an exhaust member arranged at the exhaust port.

[0009] As a preferred solution of the protection mechanism described in the utility model, the air intake component includes an air intake baffle arranged on the outside of the air inlet, a filter element arranged in the air intake baffle, a pressure plate arranged on the filter element, an air intake pipe arranged on the inside of the air inlet, an air intake fan arranged inside the air intake pipe, and a dust box arranged at the bottom of the air intake pipe.

[0010] As a preferred solution of the protection mechanism described in the utility model, the exhaust component includes an exhaust baffle arranged on the outside of the exhaust port, an exhaust pipe arranged on the inside of the exhaust port, and an exhaust fan arranged in the exhaust pipe.

[0011] As a preferred solution of the protection mechanism described in the utility model, the support assembly includes a mounting plate arranged at the bottom of the terminal block, ventilation holes opened on the mounting plate, and telescopic parts arranged on both sides of the mounting plate.

[0012] As a preferred solution of a protection mechanism described in the utility model, the telescopic part includes a sliding rod arranged on one side of the mounting plate, a sliding sleeve arranged on the end of the sliding rod away from the mounting plate, a limit block arranged on the outside of the sliding rod, a sliding groove opened on the inner wall of the sliding sleeve and matching with the limit block, a threaded pin that is movable and passes through the sliding rod, a nut threadedly arranged on the outer wall of the threaded pin, a first slot opened on the sliding rod and matching with the threaded pin, and a second slot opened on the sliding sleeve and matching with the threaded pin, and the first slot is provided with multiple groups.

[0013] As a preferred solution of the protection mechanism described in the utility model, the sliding assembly includes guide blocks arranged on both sides of the inner wall of the cabinet, guide grooves opened on the guide blocks, sliding columns arranged in the guide grooves, and studs threadedly arranged in the guide blocks, the studs abut against the outer wall of the sliding columns, and the side of the sliding column away from the guide blocks is movably connected to the sliding sleeve.

[0014] The beneficial effects of the utility model are as follows: the air flow inside the cabinet is driven by the circulating fan, so that dust does not stay on the surface of the terminal row, the external air can be sucked into the cabinet through the intake fan, and the external air dissipates the heat to the terminal row, and the hot air in the cabinet is discharged out of the cabinet through the exhaust fan, and the air inside the cabinet is circulated through the cooperation of the circulating fan, the intake fan, and the exhaust fan, so that the heat dissipation effect is enhanced, and the setting of the air intake baffle and the exhaust baffle can reduce most of the objects from entering the cabinet through the air inlet and exhaust ports to affect the operation of the intake fan and the exhaust fan, and the filter element can block most of the solid objects from entering the cabinet, and the cooperation of the air intake baffle and the dust box can further block and collect the debris entering the cabinet, and the cooperation of the sliding rod and the sliding sleeve can make the mounting plate quickly installed inside the cabinet, and the guide groove and the guide block can make the mounting plate flip over, so that the staff can inspect and repair the cable connection conveniently and improve the work efficiency.

[0015] In view of the above-mentioned problems that it is inconvenient for the staff of the prior art to check the cable connection, which causes difficulties in maintenance work, and the cable connection of the bucket wheel machine is easily corroded, the present utility model is proposed.

[0016] Therefore, the utility model aims to provide a protection mechanism, the purpose of which is to facilitate the staff to inspect and repair the cable connection.

[0017] In order to solve the above technical problems, the utility model provides the following technical solutions: an unattended control cabinet for a bucket wheel excavator body, comprising a bottom plate arranged on the cabinet body, a hinge arranged on the inner wall of the cabinet body, and a cabinet door arranged on the other side of the hinge.

[0018] As a preferred solution of the unattended control cabinet for a bucket wheel excavator body described in the utility model, wherein: a wire inlet groove is opened on the bottom plate, and two groups of the wire inlet grooves are provided.

[0019] As a preferred solution of the unattended control cabinet for a bucket wheel excavator body described in the utility model, a conductive door sealing strip is provided on one side of the cabinet door close to the cabinet body.

[0020] The beneficial effects of the utility model are as follows: by setting the hinges on the inner wall of the cabinet, the exposure of the hinges to the air can be effectively reduced, the erosion of the hinges by the humid environment can be greatly reduced, and the service life can be improved; through the two sets of cable entry troughs, all cables can be connected from under the bottom plate, which can provide good protection for the cables; by setting the conductive door sealing strip on the cabinet door, the anti-radio interference capability is greatly improved, and the stability of equipment operation is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 The utility model is a schematic diagram of the overall structure of a protection mechanism.

[0023] Figure 2 The utility model is a schematic diagram of the internal structure of a cabinet of a protection mechanism.

[0024] Figure 3 The utility model is a schematic diagram of a cabinet structure of a protection mechanism.

[0025] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of an air intake member of a protection mechanism.

[0026] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of an exhaust component of a protection mechanism.

[0027] Figure 6 The utility model is a schematic diagram of the mounting plate structure of a protection mechanism.

[0028] Figure 7 For this utility model Figure 2 A magnified view of the structure in the middle.

[0029] Figure 8 The utility model is a structural schematic diagram of a slide bar of a protection mechanism.

[0030] Fig. 9 The utility model is a schematic diagram of the structure of a sliding sleeve of a protection mechanism.

[0031] Fig.10 The utility model is a structural schematic diagram of a bottom plate of an unattended control cabinet for a bucket wheel excavator body.

[0032] Fig.11 The utility model is a schematic diagram of the structure of a cabinet door of an unattended control cabinet for a bucket wheel excavator body.

[0033] Fig.12 For this utility model Fig.11 Enlarged view of the structure at point B in the middle. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] 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 term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Example 1

[0039] Reference Figure 1-Figure 5 , which is the first embodiment of the utility model, provides a protection mechanism, the device includes, a heat dissipation component 100, including a cabinet 101, the cabinet 101 is made of stainless steel, the material is not less than 304, the thickness is not less than 2mm, it is convenient for the staff to flush the cabinet 101, a circulating fan 102 arranged on the top of the inner wall of the cabinet 101, used to move the air inside the cabinet 101, an air circulation component 103 arranged in the cabinet 101, used to exchange the air inside and outside the cabinet 101 to achieve heat dissipation, and a guide block 104 arranged at the bottom of the inner wall of the cabinet 101, the guide block 104 is arranged in the middle of the air circulation component 103, and the two sides of the guide block 104 are arc surfaces, which are used to guide the sucked air upward to enhance the heat dissipation effect;

[0040] The installation component 200 includes a terminal block 201 arranged in the cabinet 101 for connecting cables, a support component 202 arranged at the bottom of the terminal block 201 for setting the terminal block 201, and a sliding component 203 arranged on both sides of the support component 202 for realizing the movement of the support component 202.

[0041] Among them, the air circulation component 103 includes an air inlet 103a opened on one side of the cabinet 101, an exhaust port 103b opened on the other side of the cabinet 101, an air inlet member 103c arranged at the air inlet 103a, the air inlet member 103c is used to filter and inhale external air, and an exhaust member 103d is arranged at the exhaust port 103b, and the exhaust member 103d is used to discharge the hot air inside the cabinet 101.

[0042] The air intake member 103c includes an air intake baffle 103c-1 arranged on the outside of the air inlet 103a, and the grille in the air intake baffle 103c-1 is tilted downward to reduce the possibility of water flowing into the cabinet 101 from the air intake baffle when personnel are in contact with the cabinet 101, thereby playing a protective role; a filter element 103c-2 arranged in the air intake baffle 103c-1, and the filter element 103c-2 is used to intercept most of the particles in the inhaled air from entering the cabinet 101; and a pressure plate 103c-3 arranged on the filter element 103c-2, and the pressure plate 103c-3 is fixed to the filter element 103c-2 by screws for fixing A fixed filter element 103c-2, an air intake pipe 103c-4 arranged on the inner side of the air inlet 103a, the air intake pipe 103c-4 is used as a channel for external air to enter the cabinet 101, a filter plate is arranged on the side of the air intake pipe 103c-4 away from the air inlet 103a, which is used for secondary filtering of the air entering the cabinet 101, an air intake fan 103c-5 arranged inside the air intake pipe 103c-4, the air intake fan 103c-5 is used to inhale external air, and a dust box 103c-6 is arranged at the bottom of the air intake pipe 103c-4, the dust box 103c-6 is used to further collect particles intercepted by the filter plate.

[0043] Furthermore, the exhaust component 103d includes an exhaust baffle 103d-1 arranged on the outside of the exhaust port 103b, and the grille in the exhaust baffle 103d-1 is tilted downward to reduce the possibility of water flowing into the cabinet 101 from the air intake baffle when people approach the cabinet 101, thereby playing a protective role; an exhaust pipe 103d-2 arranged on the inside of the exhaust port 103b, the exhaust pipe 103d-2 is used as a channel for exhausting the air inside the cabinet 101 to the outside; and an exhaust fan 103d-3 arranged in the exhaust pipe 103d-2, the exhaust fan 103d-3 is used to exhaust the hot air inside the cabinet 101.

[0044] During use, when the bucket wheel excavator starts to work, the cable connections in the cabinet 101 will generate a lot of heat due to long-term work. At this time, the circulating fan 102 starts, driving the air inside the cabinet 101 to move and dissipate heat for the cable connections. At the same time, the air intake fan 103c-5 and the exhaust fan 103d-3 start, and the air intake fan 103c-5 draws external air into the cabinet 101. At this time, the external air is filtered by the filter element 103c-2 and the filter plate, and the magazine particles fall into the ash box 103c-6. At this time, the external air enters the cabinet 101, is guided upward by the guide plate, and flows inside the cabinet 101 under the action of the circulating fan 102. At this time, the exhaust fan 103d-3 attracts the hot air inside the cabinet 101, and discharges it to the outside of the cabinet 101 through the exhaust port 103b, and cooperates with the air intake fan 103c-5 to form gas exchange, thereby improving the heat dissipation effect of the terminal block 201.

[0045] When the ash box 103c-6 is full, the staff only needs to enter the cabinet 101 to pull out the ash box 103c-6, pour out the internal magazine particles, and then return the ash box 103c-6 to its original position.

[0046] When the filter element 103c-2 needs to be cleaned and replaced, the staff only needs to loosen the screws on the pressure plate 103c-3 to pull out the filter element 103c-2, insert the new filter element 103c-2 into the air intake baffle 103c-1, and then tighten the screws on 103c-3 to complete the replacement.

[0047] Example 2

[0048] Reference Figure 2 and Figure 6-Figure 9 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that it is convenient for staff to inspect and repair the cable connection.

[0049] Compared with Example 1, further, the support assembly 202 includes a mounting plate 202a arranged at the bottom of the terminal block 201, the mounting plate 202a is used to install the terminal block 201, ventilation holes 202b are opened on the mounting plate 202a, the ventilation holes 202b are used to cooperate with the circulating fan 102 to improve the heat dissipation effect, and telescopic parts 202c are arranged on both sides of the mounting plate 202a, the telescopic parts 202c are used to adjust the position of the mounting plate 202a, so as to facilitate the installation of the mounting plate 202a.

[0050] The telescopic member 202c includes a slide bar 202c-1 disposed on one side of the mounting plate 202a, a slide sleeve 202c-2 disposed on one end of the slide bar 202c-1 away from the mounting plate 202a, a limit block 202c-3 disposed outside the slide bar 202c-1, and a slide groove 202c-4 provided on the inner wall of the slide sleeve 202c-2 and matching with the limit block 202c-3. The slide sleeve 202c-2 can prevent back and forth movement and activity on the slide bar 202c-1 through the cooperation of the limit block 202c-3 and the slide groove 202c-4 and penetrate the slide bar 202c-1. A threaded pin 202c-5, a nut 202c-6 threadedly arranged on the outer wall of the threaded pin 202c-5, a first slot 202c-7 opened on the slide rod 202c-1 and matching with the threaded pin 202c-5, and a second slot 202c-8 opened on the sleeve 202c-2 and matching with the threaded pin 202c-5, wherein the first slot 202c-7 is provided with multiple groups, and the relative positions of the slide rod 202c-1 and the sleeve 202c-2 can be controlled by plugging the threaded pin 202c-5 into the first slot 202c-7 and the second slot 202c-8.

[0051] Among them, the sliding component 203 includes guide blocks 203a arranged on both sides of the inner wall of the cabinet 101, guide grooves 203b opened on the guide blocks 203a, and sliding columns 203c arranged in the guide grooves 203b. The guide blocks 203a are used to support the sliding columns 203c. The guide grooves 203b are divided into horizontal grooves and vertical grooves for sliding of the sliding columns 203c. The side of the sliding column 203c away from the guide blocks 203a is movably connected with the sliding sleeve 202c-2, and there are studs 203d threadedly arranged in the guide blocks 203a. The studs 203d abut against the outer wall of the sliding columns 203c to fix the position of the sliding columns 203c.

[0052] During use, when the staff needs to inspect the cable connection, loosen the stud 203d and pull the mounting plate 202a to the side close to the staff through the horizontal groove. When the two sets of sliding columns 203c close to the staff side enter the vertical groove, pull the mounting plate 202a downward. At this time, the mounting plate 202a is deflected toward the staff side, making it convenient for the staff to observe and inspect the cable connection.

[0053] When the inspection is completed, the mounting plate 202a is lifted up, and when the two sets of slide posts 203c on the side close to the staff enter the horizontal groove, the mounting plate 202a is pushed into the cabinet 101, and when it is pushed to the bottom, the studs 203d are tightened to fix the slide posts 203c.

[0054] The remaining structures are the same as those of Example 1.

[0055] Example 3

[0056] Reference Figure 1 and Figure 11-Figure 12 , which is the third embodiment of the utility model. This embodiment is different from the second embodiment in that it realizes the bundling of the connecting cables.

[0057] Compared with Example 2, further, an unattended control cabinet for a bucket wheel excavator body includes a bottom plate 300 arranged on the cabinet body 101, the bottom plate 300 is used to fix the position of the cabinet body 101, the bottom plate 300 is made of stainless steel, the material is not less than 304, the thickness is not less than 2 mm, a hinge 400 is arranged on the inner wall of the cabinet body 101, the area of ​​the hinge 400 exposed to the outside is reduced, the erosion of the hinge 400 by the external humid air is reduced, and the service life is improved; a cabinet door 500 is arranged on the other side of the hinge 400, which is used for staff to enter the cabinet body 101 and protect the internal cable connections.

[0058] Among them, the bottom plate 300 is provided with a wire entry groove 600, and two groups of the wire entry groove 600 are provided for connecting the cables and bundling the connected cables, so as to facilitate the staff to carry out unified maintenance, improve work efficiency, and protect the connected cables.

[0059] During use, a conductive door sealing strip 700 is provided on one side of the cabinet door 500 close to the cabinet body 101 . The conductive door sealing strip 700 is used to improve the cabinet door 500's ability to resist radio frequency interference and protect the internal equipment of the cabinet body 101 .

[0060] During use, when the cable needs to be connected, the cabinet door 500 is opened, the stud 203d is loosened, and the mounting plate 202a is pulled to deflect the mounting plate 202a toward the staff side. At this time, the connecting cable enters the cabinet 101 through the cable entry groove 600. At this time, the staff connects the cable to the terminal block 201. After the connection is completed, the mounting plate 202a is lifted up, the mounting plate 202a is pushed back to its original position, the stud 203d is tightened, and the cabinet door 500 is closed.

[0061] When the connecting cable needs to be removed, open the cabinet door 500, repeat the above steps to flip the installation plate 202a, remove the target cable from the terminal block 201, and then pull the target cable out of the cabinet 101 through the cable entry slot 600. At this time, the installation plate 202a returns to its original position, tighten the stud 203d, and close the cabinet door 500 to complete the operation.

[0062] The remaining structure is the same as that of Example 2.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A protection mechanism, characterized in that: include, A heat dissipation component (100) comprises a cabinet (101), a circulation fan (102) arranged at the top of the inner wall of the cabinet (101), an air circulation component (103) arranged in the cabinet (101), and a guide block (104) arranged at the bottom of the inner wall of the cabinet (101); The mounting component (200) comprises a terminal block (201) arranged in the cabinet (101), a support assembly (202) arranged at the bottom of the terminal block (201), and sliding assemblies (203) arranged at both sides of the support assembly (202).

2. The protection mechanism according to claim 1, characterized in that: The air circulation component (103) comprises an air inlet (103a) opened on one side of the cabinet (101), an air outlet (103b) opened on the other side of the cabinet (101), an air inlet member (103c) arranged at the air inlet (103a), and an air outlet member (103d) arranged at the air outlet (103b).

3. The protection mechanism according to claim 2, characterized in that: The air intake component (103c) comprises an air intake baffle (103c-1) arranged on the outside of the air intake port (103a), a filter element (103c-2) arranged in the air intake baffle (103c-1), a pressure plate (103c-3) arranged on the filter element (103c-2), an air intake pipe (103c-4) arranged on the inside of the air intake port (103a), an air intake fan (103c-5) arranged inside the air intake pipe (103c-4), and an ash collection box (103c-6) arranged at the bottom of the air intake pipe (103c-4).

4. The protection mechanism according to claim 3, characterized in that: The exhaust component (103d) comprises an exhaust baffle (103d-1) arranged outside the exhaust port (103b), an exhaust pipe (103d-2) arranged inside the exhaust port (103b), and an exhaust fan (103d-3) arranged in the exhaust pipe (103d-2).

5. The protection mechanism according to claim 4, characterized in that: The support assembly (202) comprises a mounting plate (202a) arranged at the bottom of the terminal block (201), a ventilation hole (202b) opened on the mounting plate (202a), and telescopic parts (202c) arranged on both sides of the mounting plate (202a).

6. The protection mechanism according to claim 5, characterized in that: The telescopic member (202c) comprises a sliding rod (202c-1) arranged on one side of the mounting plate (202a), a sliding sleeve (202c-2) arranged on an end of the sliding rod (202c-1) away from the mounting plate (202a), a limiting block (202c-3) arranged outside the sliding rod (202c-1), a sliding groove (202c-4) provided on the inner wall of the sliding sleeve (202c-2) and matching with the limiting block (202c-3), and a movable member (202c-4) extending through the sliding rod (202c-1). A threaded pin (202c-5) (202c-1), a nut (202c-6) threadedly arranged on the outer wall of the threaded pin (202c-5), a first slot (202c-7) opened on the sliding rod (202c-1) and matching with the threaded pin (202c-5), and a second slot (202c-8) opened on the sliding sleeve (202c-2) and matching with the threaded pin (202c-5), wherein the first slot (202c-7) is provided in multiple groups.

7. The protection mechanism according to claim 6, characterized in that: The sliding assembly (203) comprises guide blocks (203a) arranged on both sides of the inner wall of the cabinet (101), guide grooves (203b) opened on the guide blocks (203a), sliding columns (203c) arranged in the guide grooves (203b), and studs (203d) threadedly arranged in the guide blocks (203a), wherein the studs (203d) abut against the outer wall of the sliding columns (203c), and the side of the sliding columns (203c) away from the guide blocks (203a) is movably connected to the sliding sleeve (202c-2).

8. An unattended control cabinet for a bucket wheel excavator, characterized in that: It comprises the protection mechanism as claimed in claim 7, and also comprises a bottom plate (300) arranged on the cabinet body (101), a hinge (400) arranged on the inner wall of the cabinet body (101), and a cabinet door (500) arranged on the other side of the hinge (400).

9. The unattended control cabinet for the bucket wheel excavator according to claim 8, characterized in that: The bottom plate (300) is provided with a wire inlet groove (600), and two groups of the wire inlet grooves (600) are provided.

10. The unattended control cabinet for the bucket wheel excavator according to claim 9, characterized in that: A conductive door sealing strip (700) is provided on a side of the cabinet door (500) close to the cabinet body (101).