Crane cab top automatic anticorrosive coating maintenance device and use method

Abstract

The invention relates to the technical field of crane cab top cleaning, in particular to a crane cab top automatic anti-corrosion coating maintaining device and a using method.The crane cab top automatic anti-corrosion coating maintaining device comprises a positioning frame, a first positioning mechanism and a second positioning mechanism are installed on the two sides of the positioning frame respectively, and fixing columns are arranged at one end of the first positioning mechanism and one end of the second positioning mechanism; a triangular block is arranged on the scraper arranged between the first positioning mechanism and the second positioning mechanism, when the scraper is driven by the driving motor to move towards the end, provided with the fixing column, of the second positioning mechanism, the side wall of the fixing column makes contact with the inclined face of the triangular block, slides on the inclined face and then breaks away from the inclined face of the triangular block, and therefore the scraper shakes. Sand dust attached to the surface of the scraper blade is shaken off while sand wind at the top of the crane cab is cleaned, the cleaning effect is guaranteed, and the situation that the sand dust is mixed between the scraper blade and the top of the crane, and consequently a coating is damaged is prevented.

Description

Technical Field

[0001] The present invention belongs to the technical field of cleaning the top of a crane cab, and in particular relates to an automatic anti-corrosion coating maintenance device for the top of a crane cab and a use method thereof. Background Art

[0002] The automatic anti-corrosion coating maintenance device for the top of the crane cab is an anti-corrosion coating maintenance device used for the top of the crane cab. It uses automation technology to achieve regular maintenance and protection of the anti-corrosion coating on the top of the crane cab, ensuring the effectiveness and durability of the anti-corrosion coating;

[0003] The cab of a crane installed for external operation is subject to long-term erosion by rain and wind and sand, which will reduce the service life of the anti-corrosion coating. If it is not discovered in time, the top of the crane cab will be corroded. Therefore, installing a cleaning device on the top of the crane cab and regularly cleaning the top of the crane cab can solve the above problem.

[0004] When cleaning the top of a crane cab simply by using a cleaning mechanism in the form of a conventional automobile wiper, the cleaning brush always maintains close contact with the top of the crane cab, making it difficult to handle the sand and dust trapped between the cleaning brush and the top of the crane cab. This not only affects the subsequent cleaning effect, but also causes the trapped sand and dust to move with the cleaning brush and scratch the coating on the top of the crane cab. Therefore, in order to address the above problems, an automatic anti-corrosion coating maintenance device for the top of a crane cab and a method for use are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic anti-corrosion coating maintenance device for the top of a crane cab and a method for using the device, so as to solve the problem that when the top of the crane cab is cleaned simply by a cleaning mechanism in the form of a conventional automobile wiper, the cleaning brush always maintains close contact with the top of the crane cab, making it difficult to handle the sand and dust trapped between the cleaning brush and the top of the crane cab. This not only affects the subsequent cleaning effect, but also causes the trapped sand and dust to move with the cleaning brush and scratch the coating on the top of the crane cab. An automatic anti-corrosion coating maintenance device for the top of a crane cab comprises a positioning frame for connecting to the top of the crane cab, a first positioning mechanism and a second positioning mechanism are respectively provided on both sides of the positioning frame, one side of the second positioning mechanism is fixedly connected to a dustproof housing, the end of the second positioning mechanism is fixedly connected to a motor positioning block, one side of the motor positioning block is installed with a drive motor, the top end of the drive motor main shaft is fixedly connected to a threaded rod, and the outer side of the threaded rod is spirally connected to a bent plate;

[0006] A cleaning unit and a decontamination unit are provided between the first positioning mechanism and the second positioning mechanism, and a fixing column is fixedly connected to one side of the first positioning mechanism and the second positioning mechanism;

[0007] The cleaning unit includes a cleaning roller, a rotating shaft is fixedly connected in the middle of the cleaning roller, and one end of the rotating shaft is rotatably connected to the bent plate;

[0008] The dirt removal unit includes a scraper, a comb groove is provided at the bottom end of the scraper, and limiting grooves are provided at both ends of the scraper. Connecting blocks are slidably connected to the inside of the limiting grooves through reset springs. Fixed blocks are fixedly connected to the upper ends of the side surfaces of both ends of the scraper, and an end face of the fixed block away from the center point of the scraper is fixedly connected to a triangular block; when the scraper moves toward one end of the fixed column provided with the second positioning mechanism under the drive of the driving motor, the side wall of the fixed column contacts the inclined surface of the triangular block and disengages from the inclined surface of the triangular block after sliding on it.

[0009] According to the above-described automatic anti-corrosion coating maintenance device for the top of a crane cab, the first positioning mechanism includes a first positioning plate, a first slide groove is opened in the middle of the first positioning plate, and the second positioning mechanism includes a second positioning plate, a second slide groove is opened on the inner side of the second positioning plate, and a tooth plate is fixedly connected to the lower end of the inner side of the second slide groove.

[0010] According to the above-mentioned automatic anti-corrosion coating maintenance device for the top of a crane cab, the bottom ends of the first positioning plate and the second positioning plate are both made of magnetic material, and the first positioning plate and the second positioning plate are tightly attached to the top of the crane cab.

[0011] According to the above-described automatic anti-corrosion coating maintenance device for the top of a crane cab, both ends of the first positioning plate and the second positioning plate are exposed on both sides of the top of the crane cab, and the bottom ends of the first positioning plate and the second positioning plate are arranged on the same horizontal plane.

[0012] According to the above-described automatic anti-corrosion coating maintenance device for the top of a crane cab, the vertical cross-sections of the first slide groove and the second slide groove are both T-shaped, the first slide groove and the second slide groove are both through grooves, and the first slide groove and the second slide groove are slidably connected to one end of the rotating shaft and the connecting block.

[0013] According to the above-mentioned automatic anti-corrosion coating maintenance device for the top of a crane cab, a gear is fixedly connected to the outer side of one end of the rotating shaft, and the gear is meshed with the gear plate.

[0014] According to the above-described automatic anti-corrosion coating maintenance device for the top of a crane cab, the bent plate is L-shaped, the bent plate is fixedly connected to a connecting block provided on one side of the scraper, the bent plate is slidably connected to the second positioning plate through a second slide groove, and the bent plate is provided on the upper side of the tooth plate.

[0015] According to the above-mentioned automatic anti-corrosion coating maintenance device for the top of a crane cab, the triangular blocks correspond to the fixed columns one by one, and the midpoint of the inclined surface of the triangular block and the center point of the end surface of the fixed column on the same side are arranged in the same horizontal plane.

[0016] According to the above-mentioned automatic anti-corrosion coating maintenance device for the top of the crane cab, the cleaning roller and the lower ends of the scraper are both in close contact with the top of the crane cab.

[0017] The method for using the automatic anti-corrosion coating maintenance device for the top of a crane cab is characterized by comprising the following steps:

[0018] Step S1: Device installation: The first positioning mechanism and the second positioning mechanism are installed on the top of the crane cab through the positioning frame. During the installation process, the bottom end surfaces of the first positioning mechanism and the second positioning mechanism are in the same horizontal plane, and the ends of the first positioning mechanism and the second positioning mechanism extend out of the top of the crane cab;

[0019] Step S2: Power on: After installation is complete, connect the drive motor to the crane power supply via wires, a controller, and a leakage protection device. The controller is installed inside the reserved mounting hole on the crane workbench.

[0020] Step S3: Start trial operation: The controller controls the driving motor to rotate the threaded rod, which drives the bending plate to move back and forth in a cycle. During the reciprocating movement of the bending plate, the cleaning roller and the scraper are driven to move to clean the top of the crane cab;

[0021] When the triangular block fixedly connected to one side of the fixed block moves to contact the fixed column, the inclined surface of the triangular block contacts the fixed column, so that the scraper is lifted as a whole. After the triangular block and the fixed column are separated, the scraper moves down rapidly under the drive of the reset spring, generating vibration. At this time, the drive motor will pause for 10 seconds. After the scraper is stabilized in the initial position, it rotates in the opposite direction to reset the scraper.

[0022] Step S4: Later maintenance: When the scraper and cleaning roller need to be maintained later, the entire equipment is disassembled from the top of the crane cab through the positioning frame.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention utilizes a cleaning unit, a drive motor, a dirt removal unit, and a fixed column. During cleaning of the crane cab roof, the comb-tooth groove structure enhances the ability to scrape away stubborn stains. The return spring within the limit groove causes the scraper to vibrate when pressed downward, shaking off attached dust and preventing secondary scratches on the coating. When the scraper moves to the fixed column, the inclined surface of the triangular block lifts the scraper. Once it detaches from the surface, the return spring rapidly presses downward, creating periodic vibrations that prevent dust accumulation and reduce coating wear. This also prevents dust from becoming trapped between the scraper and the crane roof, potentially damaging the coating.

[0025] 2. In the present invention, the gear is driven by the tooth plate to rotate, and the reciprocating linear movement of the cleaning roller is utilized to achieve the dual effects of rolling cleaning and linear scraping, which can further improve the cleaning effect on the top of the crane cab and remove sand and dust more thoroughly.

[0026] 3. The bottom ends of the first positioning plate and the second positioning plate of the present invention are made of magnetic material. The first positioning plate and the second positioning plate are tightly attached to the top of the crane cab and adsorbed on the top of the cab through the magnetic material, ensuring that the device is firmly installed without drilling, avoiding damage to the coating; the driving motor converts the rotational motion into linear reciprocating motion through the threaded rod, pushing the cleaning roller and scraper to cover the entire top surface of the crane cab, thereby improving cleaning efficiency; the T-shaped slide groove limits the displacement direction of the rotating shaft and the connecting block, ensuring the stable operation of the cleaning unit and the decontamination unit, reducing component wear and extending service life.

[0027] 4. The positioning frame provided in the present invention facilitates the connection of the entire device to the top of the crane cab, and the device adopts a modular structure, which makes it easy to replace components individually after they are damaged, thereby improving the convenience of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0030] Figure 3 This is a schematic structural diagram of the decontamination unit of the present invention;

[0031] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at C in the middle;

[0032] Figure 5 This is a cross-sectional view of the first positioning plate of the present invention;

[0033] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0034] Figure 7 Schematic diagram of the structure of the second positioning mechanism of the present invention;

[0035] Figure 8 This is a schematic diagram of the scraper structure of the present invention;

[0036] Figure 9 For the present invention Figure 8 Schematic diagram of the structure at point D in the middle.

[0037] In the figure: 1- positioning frame, 2- first positioning mechanism, 21- first positioning plate, 22- first slide, 3- second positioning mechanism, 31- second positioning plate, 32- second slide, 33- tooth plate, 4- dustproof housing, 5- drive motor, 6- motor positioning block, 7- cleaning unit, 71- cleaning roller, 72- rotating shaft, 8- decontamination unit, 81- scraper, 82- fixed block, 83- connecting block, 84- return spring, 85- triangular block, 86- limiting groove, 87- comb tooth groove, 9- fixed column, 10- threaded rod, 11- gear, 12- bent plate. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] like Figures 1 to 9 As shown, an automatic anti-corrosion coating maintenance device for the top of a crane cab includes a positioning frame 1 for connecting to the top of the crane cab, a first positioning mechanism 2 and a second positioning mechanism 3 are respectively provided on both sides of the positioning frame 1, a dustproof housing 4 is fixedly connected to one side of the second positioning mechanism 3, a motor positioning block 6 is fixedly connected to the end of the second positioning mechanism 3, a drive motor 5 is installed on one side of the motor positioning block 6, a threaded rod 10 is fixedly connected to the top end of the main shaft of the drive motor 5, and a bent plate 12 is spirally connected to the outer side of the threaded rod 10;

[0040] A cleaning unit 7 and a decontamination unit 8 are provided between the first positioning mechanism 2 and the second positioning mechanism 3. A fixing column 9 is fixedly connected to one side of each of the first positioning mechanism 2 and the second positioning mechanism 3.

[0041] The cleaning unit 7 includes a cleaning roller 71, a rotating shaft 72 is fixedly connected to the middle of the cleaning roller 71, and one end of the rotating shaft 72 is rotatably connected to the bent plate 12;

[0042] The decontamination unit 8 includes a scraper 81, a comb groove 87 is provided at the bottom end of the scraper 81, and a limiting groove 86 is provided at both ends of the scraper 81. The limiting groove 86 is slidably connected to a connecting block 83 through a reset spring 84. The upper ends of the side surfaces of both ends of the scraper 81 are fixedly connected to a fixed block 82, and the end face of the fixed block 82 away from the center point of the scraper 81 is fixedly connected to a triangular block 85; when the scraper 81 moves toward one end of the fixed column 9 set in the second positioning mechanism 3 under the drive of the driving motor 5, the side wall of the fixed column 9 contacts the inclined surface of the triangular block 85 and slides on it and then disengages from the inclined surface of the triangular block 85.

[0043] The first positioning mechanism 2 includes a first positioning plate 21 with a first sliding groove 22 in the middle. The second positioning mechanism 3 includes a second positioning plate 31 with a second sliding groove 32 on the inner side of the second positioning plate 31 . A tooth plate 33 is fixedly connected to the lower inner end of the second sliding groove 32 .

[0044] The bottom ends of the first positioning plate 21 and the second positioning plate 31 are made of magnetic materials, and the first positioning plate 21 and the second positioning plate 31 are in close contact with the top of the crane cab.

[0045] Both ends of the first positioning plate 21 and the second positioning plate 31 are exposed on both sides of the top of the crane cab, and the bottom ends of the first positioning plate 21 and the second positioning plate 31 are arranged on the same horizontal plane.

[0046] The vertical sections of the first slide groove 22 and the second slide groove 32 are both T-shaped. The first slide groove 22 and the second slide groove 32 are both through grooves. The first slide groove 22 and the second slide groove 32 are slidably connected to one end of the rotating shaft 72 and the connecting block 83.

[0047] A gear 11 is fixedly connected to the outer side of one end of the rotating shaft 72 , and the gear 11 is meshed with the gear plate 33 .

[0048] The bent plate 12 is L-shaped and is fixedly connected to a connecting block 83 provided on one side of the scraper 81 . The bent plate 12 is slidably connected to the second positioning plate 31 through the second sliding groove 32 . The bent plate 12 is provided on the upper side of the tooth plate 33 .

[0049] There is a one-to-one correspondence between the triangular block 85 and the fixed column 9 , and the midpoint of the inclined surface of the triangular block 85 and the center point of the end surface of the fixed column 9 on the same side are arranged in the same horizontal plane.

[0050] The lower ends of the cleaning roller 71 and the scraper 81 are both in close contact with the top of the crane cab.

[0051] A method for using the automatic anti-corrosion coating maintenance device for the top of a crane cab is implemented in the present invention.

[0052] Step 1: Device Installation

[0053] Positioning frame 1 installation

[0054] First, place the positioning frame 1 in contact with the top surface of the crane cab. Made of high-strength aluminum alloy, the positioning frame 1 secures the first and second positioning mechanisms 2 and 3 to its sides. Before installation, ensure the cab top surface is clean, dry, and free of oil, dirt, or rust to ensure secure attachment of the magnetic first and second positioning plates 21 and 31.

[0055] Positioning mechanism adjustment

[0056] The first positioning mechanism 2 includes a first positioning plate 21, the bottom of which is made of a magnetic material and magnetically attached to the left edge of the cab roof. The second positioning mechanism 3 has a second positioning plate 31 fixed to the right edge in the same manner. Use a level to calibrate the bottoms of the first and second positioning plates 21, 31 to ensure they are aligned with a level within 1mm to prevent subsequent shifting of the cleaning unit 7.

[0057] Adjust the direction of the first chute 22 and the second chute 32 so that they are parallel to the long side of the cab top. The two ends of the first positioning plate 21 and the second positioning plate 31 need to be exposed on both sides of the cab top for subsequent dust disposal.

[0058] Cleaning unit and decontamination unit pre-installed

[0059] The cleaning roller 71 of the cleaning unit 7 is connected to the rotating end of the bent plate 12 via the rotating shaft 72 , ensuring that the gear 11 at one end of the rotating shaft 72 is engaged with the toothed plate 33 in the second sliding groove 32 .

[0060] The scraper 81 of the dirt removal unit 8 is fixed to the bent plate 12 by a connecting block 83. During installation, it is necessary to check whether the return spring 84 in the limit groove 86 is clamped to prevent the scraper 81 from falling off during operation.

[0061] Step 2: Power on

[0062] Controller Installation

[0063] Insert the controller into the pre-installed mounting hole on the crane platform, ensuring it is flush with the operator panel. The controller must be waterproof to an IP65 rating to withstand outdoor environments.

[0064] Circuit Connection

[0065] The power line of the drive motor 5 is connected to the crane power supply through the terminal block in the dustproof housing 4. When wiring, the main power of the crane must be turned off and the insulation of the line must be checked with a multimeter.

[0066] A leakage protection device with a rated current of 10A is connected in series in the circuit, and an emergency stop button is set to ensure that the power can be quickly cut off when the equipment is abnormal.

[0067] Functional testing

[0068] After power on, send a start command through the controller to observe whether the drive motor 5 is running normally at no load and the speed is 30r / min. If the motor makes abnormal noise or heats up, check whether the screw fit of the threaded rod 10 and the bent plate 12 is smooth.

[0069] Step 3: Start the test run

[0070] The cleaning roller 71 and the scraper 81 work together

[0071] When the drive motor 5 is activated, the threaded rod 10 drives the curved plate 12 to perform a reciprocating linear motion along the second chute 32, with a stroke length corresponding to the long side of the cab roof. As the curved plate 12 moves, the cleaning roller 71 rotates at 50 rpm in engagement with the gear 11 and the toothed plate 33, sweeping away dust and sand from the surface.

[0072] Scraper 81 moves synchronously with curved plate 12, with comb grooves 87 on its bottom scraping away stubborn dirt. When the inclined surface of triangular block 85 of fixed block 82 contacts fixed column 9, the inclined surface lifts scraper 81 5mm, clearing the cab surface. After release, return spring 84 drives scraper 81 downward rapidly, generating high-frequency vibrations at 3Hz, which shake off attached sand and dust.

[0073] Run parameter settings

[0074] A single cleaning cycle is 10 minutes, including 5 minutes of forward cleaning and 5 minutes of reverse reset. The drive motor 5 pauses for 10 seconds when the scraper 81 vibrates, and switches direction after the reset spring 84 stabilizes.

[0075] The controller can set a scheduled cleaning mode, such as once a day or on demand, and displays the operating status through an LED indicator.

[0076] Exception handling

[0077] If the cleaning roller 71 is stuck, the machine needs to be stopped to check the clearance between the rotating shaft 72 and the first and second chute grooves 22 and 32. The standard clearance is 0.5 mm, and any stuck foreign objects need to be cleared.

[0078] When the vibration amplitude of the scraper 81 is insufficient, the preload force of the return spring 84 can be adjusted, and the recommended compression amount is 8 mm.

[0079] Step 4: Post-maintenance

[0080] Regular inspections

[0081] Check the wear of the bristles of the cleaning roller 71 every month. If the wear exceeds 50% and the length is ≤15mm, replace the roller with a new one.

[0082] The comb grooves 87 of the scraper 81 are cleaned once every quarter to prevent dust accumulation from affecting the scraping effect.

[0083] Disassembly and maintenance

[0084] After turning off the power, loosen the magnetic fixing bolts of the positioning bracket 1 and remove the entire device from the top of the cab.

[0085] When disassembling, be careful to protect the dustproof housing 4 to prevent bumps and moisture from getting into the internal motor 5.

[0086] Lubrication of key components

[0087] The contact surfaces between the rotating shaft 72 and the first and second chute grooves 22 and 32 are smeared with NLGI grade 2 lithium-based grease every six months to reduce friction loss.

[0088] The meshing portion between the gear 11 and the tooth plate 33 is sprayed with anti-rust oil to prevent rust from affecting the transmission accuracy.

[0089] Technical effect verification

[0090] After implementing this solution, field measurements showed a 60% increase in cab roof cleaning efficiency and a reduction in coating wear to 0.5% per year, down from 2%. The vibrating design of the scraper 81 effectively eliminated secondary scratching caused by sand and dust, and its modular structure reduced maintenance time by 40%.

[0091] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. An automatic anti-corrosion coating maintenance device for a crane cab top, comprising a positioning frame (1) for connecting to the crane cab top, characterized in that: A first positioning mechanism (2) and a second positioning mechanism (3) are respectively provided on both sides of the positioning frame (1); a dustproof housing (4) is fixedly connected to one side of the second positioning mechanism (3); a motor positioning block (6) is fixedly connected to the end of the second positioning mechanism (3); a driving motor (5) is installed on one side of the motor positioning block (6); a threaded rod (10) is fixedly connected to the top end of the main shaft of the driving motor (5); and a bent plate (12) is spirally connected to the outer side of the threaded rod (10); A cleaning unit (7) and a decontamination unit (8) are provided between the first positioning mechanism (2) and the second positioning mechanism (3); and a fixing column (9) is fixedly connected to one side of each of the first positioning mechanism (2) and the second positioning mechanism (3); The cleaning unit (7) comprises a cleaning roller (71), a rotating shaft (72) is fixedly connected in the middle of the cleaning roller (71), and one end of the rotating shaft (72) is rotatably connected to the bent plate (12); The decontamination unit (8) comprises a scraper (81), a comb tooth groove (87) is provided at the bottom end of the scraper (81), and a limiting groove (86) is provided at both ends of the scraper (81), and a connecting block (83) is slidably connected to the inside of the limiting groove (86) via a return spring (84), and a fixed block (82) is fixedly connected to the upper end of the side surfaces of both ends of the scraper (81), and an end surface of the fixed block (82) away from the center point of the scraper (81) is fixedly connected to a triangular block (85); when the scraper (81) moves toward one end of the fixed column (9) provided with the second positioning mechanism (3) under the drive of the driving motor (5), the side wall of the fixed column (9) contacts the inclined surface of the triangular block (85) and slides on it and then disengages from the inclined surface of the triangular block (85).

2. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 1 is characterized by: The first positioning mechanism (2) includes a first positioning plate (21), a first sliding groove (22) is provided in the middle of the first positioning plate (21), and the second positioning mechanism (3) includes a second positioning plate (31), a second sliding groove (32) is provided on the inner side of the second positioning plate (31), and a tooth plate (33) is fixedly connected to the lower end of the inner side of the second sliding groove (32).

3. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 2 is characterized by: The bottom ends of the first positioning plate (21) and the second positioning plate (31) are both made of magnetic materials, and the first positioning plate (21) and the second positioning plate (31) are in close contact with the top of the crane cab.

4. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 2 is characterized by: Both ends of the first positioning plate (21) and the second positioning plate (31) are exposed on both sides of the top of the crane cab, and the bottom ends of the first positioning plate (21) and the second positioning plate (31) are arranged on the same horizontal plane.

5. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 2 is characterized by: The vertical cross-sections of the first slide groove (22) and the second slide groove (32) are both T-shaped, and the first slide groove (22) and the second slide groove (32) are both through grooves. The first slide groove (22), the second slide groove (32) and one end of the rotating shaft (72) and the connecting block (83) are slidably connected.

6. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 1 is characterized by: A gear (11) is fixedly connected to the outer side of one end of the rotating shaft (72), and the gear (11) is meshed with the toothed plate (33).

7. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 1 is characterized by: The bent plate (12) is L-shaped, and is fixedly connected to a connecting block (83) provided on one side of the scraper (81). The bent plate (12) is slidably connected to the second positioning plate (31) through a second sliding groove (32), and the bent plate (12) is provided on the upper side of the tooth plate (33).

8. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 1 is characterized by: The triangular blocks (85) correspond to the fixed columns (9) in a one-to-one manner, and the midpoint of the inclined surface of the triangular block (85) on the same side and the center point of the end surface of the fixed column (9) are arranged on the same horizontal plane.

9. The automatic anti-corrosion coating maintenance device for the top of a crane cab according to claim 1, characterized in that: The lower ends of the cleaning roller (71) and the scraper (81) are both in close contact with the top of the crane cab.

10. A method for using the automatic anti-corrosion coating maintenance device for a crane cab top according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step S1: Device installation: The first positioning mechanism (2) and the second positioning mechanism (3) are installed on the top of the crane cab through the positioning frame (1). During the installation process, the bottom end surfaces of the first positioning mechanism (2) and the second positioning mechanism (3) are in the same horizontal plane, and the ends of the first positioning mechanism (2) and the second positioning mechanism (3) extend out of the top of the crane cab; Step S2: Power on: After installation is complete, the drive motor (5) is connected to the crane power supply via wires, a controller, and a leakage protection device, wherein the controller is installed inside a reserved mounting hole on the crane workbench; Step S3: Start trial operation: the controller controls the driving motor (5) to drive the threaded rod (10) to rotate, and the threaded rod (10) drives the bent plate (12) to move back and forth in a cycle. During the reciprocating movement of the bent plate (12), the cleaning roller (71) and the scraper (81) are driven to move, so as to clean the top of the crane cab; When the triangular block (85) fixedly connected to one side of the fixed block (82) moves to contact the fixed column (9), the inclined surface of the triangular block (85) contacts the fixed column (9), so that the scraper (81) is lifted as a whole. After the triangular block (85) and the fixed column (9) are separated, the scraper (81) moves downward rapidly under the drive of the reset spring (84), generating vibration. At this time, the driving motor (5) pauses for 10 seconds. After the scraper (81) is stably located at the initial position, it rotates in the reverse direction, so that the scraper (81) is reset. Step S4: Later maintenance: When the scraper (81) and the cleaning roller (71) need to be maintained later, the entire device is disassembled from the top of the crane cab through the positioning frame (1).

Images