A device and method for cleaning oil stains from the rack of a ship lift.

Abstract

A device and method for cleaning oil stains from a ship lift rack mainly includes a base mounted on a rack guard, which is installed on the ship compartment and moves up and down with the compartment. A tooth surface scraping mechanism is mounted on the base, contacting the tooth surface of the ship lift rack and adjusting the clamping force via a torque adjustment mechanism. Below the tooth surface scraping mechanism is an end face scraping mechanism that receives oil stains and adjusts its contact with and disengagement from the tooth tip surface of the ship lift rack using an end face scraping adjustment component. This invention provides a device and method for automatically cleaning oil stains from a ship lift rack, eliminating the need for manual cleaning and significantly reducing the maintenance costs and workload of the ship lift.

Description

Technical Field

[0001] This invention relates to the field of ship lift maintenance technology, and in particular to a device and method for cleaning oil stains from the rack of a ship lift. Background Technology

[0002] The Three Gorges Ship Lift, a crucial navigation facility of the Three Gorges Dam, is an essential component of the Three Gorges Project. It primarily provides a rapid passage for passenger ships, cargo ships, and special vessels to pass under the dam, with a throughput capacity of 3,000 tons. It is currently the world's largest and most technically challenging vertical ship lift. The Three Gorges Ship Lift is a rack and pinion vertical single-stage ship lift. The rack is the load-bearing element of the drive system. Under normal operating conditions, the pinion gear of the drive mechanism meshes with the rack, and the load of the drive mechanism is transmitted to the concrete structure through the rack. The maximum lifting height of the ship lift is 113 meters, and the rack is positioned at an elevation of 118 meters along the tower column. During the vertical movement of the ship's cargo compartment, the rack and pinion are intermittently lubricated by a centralized dry grease lubrication system. Because the rack and pinion system uses open lubrication, excess grease accumulates at both ends of the rack. With the long-term operation of the ship lift, a large amount of oil sludge accumulates on the rack and pinion, dripping downwards due to factors such as rising temperature and strong winds. This oil sludge splashes onto the water surface, ship decks, railings, etc., causing environmental pollution. Furthermore, the oil is highly viscous, and hard particles easily adhere to the working surface of the rack and pinion, potentially causing equipment damage. Therefore, timely cleaning of waste oil sludge is necessary. Currently, manual cleaning is the primary method, which is difficult and labor-intensive. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device and method for cleaning oil stains on the rack of a ship lift. The device is fixedly installed on the rack cover on the ship compartment. As the ship compartment rises or falls, the device can automatically remove oil stains from the rack and its end face. The device can effectively and automatically clean the oil stains on the rack without manual cleaning, which greatly reduces the maintenance cost and workload of the ship lift.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A device for cleaning oil stains from a ship lift rack includes a base mounted on a rack guard, the rack guard being mounted on a ship compartment and moving up and down with the ship compartment; a tooth surface scraping mechanism is mounted on the base, the tooth surface scraping mechanism contacts the tooth surface of the ship lift rack and the clamping force is adjusted by a torque adjustment mechanism; an end face scraping mechanism is mounted below the tooth surface scraping mechanism, the end face scraping mechanism receives oil stains and adjusts the contact and disengagement with the tooth tip surface of the ship lift rack through an end face scraping adjustment component.

[0005] The toothed surface oil scraping mechanism includes a toothed surface oil scraping plate, which is mounted on a bracket via a scraping plate fixing shaft. The toothed surface oil scraping plate and the bracket are locked together by a toothed locking piece. The lower end of the bracket is fixedly connected to the bracket fixing shaft, which is rotatably mounted on a fixed frame. The fixed frame is fixedly mounted on a machine base, and the connection between the bracket fixing shaft and the fixed frame is adjusted by a torque adjustment mechanism.

[0006] The toothed locking plate includes a first bevel tooth and a second bevel tooth. The first bevel tooth is fixedly installed on the bracket, and the second bevel tooth is fixedly installed on the side of the toothed oil scraper. The first bevel tooth and the second bevel tooth are locked together by a nut and a spring.

[0007] The torque adjustment mechanism includes a ratchet disc, which is fixedly mounted on the machine base and freely passes through the bracket fixing shaft. The ratchet disc engages with a pawl, the upper end of which is connected to a pull handle. The pull handle slides with a pull handle sleeve and is pushed upward by a spring. The pull handle sleeve is fixed on the bracket fixing shaft.

[0008] The end-face oil scraping mechanism includes a tooth-top oil scraper plate, which contacts the tooth-top surface of the ship lift rack. End-face oil scrapers are fixed at both ends of the tooth-top oil scraper plate, and the end-face oil scrapers contact the two sides of the ship lift rack. An oil groove is fixed at the lower end of the tooth-top oil scraper plate.

[0009] The end-face scraper has a V-shaped structure.

[0010] A guide plate is fixedly installed at the lower end of the tooth-top oil scraper.

[0011] The end face oil scraping adjustment assembly includes an adjustment screw, one end of which is connected to an oil groove, and the lower end of the oil groove is slidably mounted on a guide rail via a slider, the guide rail being fixed to the machine base; the other end of the adjustment screw freely passes through a support and is threadedly connected to an adjustment nut; a compression spring is fitted on the adjustment screw between the connecting plate and the support.

[0012] Both the tooth surface scraper and the tooth top scraper are non-metallic carbon fiber boards, and the surface of the fiber board is coated with an oleophobic coating.

[0013] A method for cleaning oil stains from the rack of a ship lift includes the following steps: Step 1, Initial Positioning and Installation: After raising the ship lift cabin to its highest position, install this device on the corresponding position on the rack and pinion guard on the cabin. Step 2: Adjust the end face oil scraping mechanism: Rotate the adjusting nut clockwise. Driven by the adjusting screw, the slider at the bottom of the oil tank of the end face oil scraping mechanism moves outward along the guide rail, the spring is compressed, and the toothed oil scraping plate on the end face oil scraping mechanism disengages from the toothed surface of the rack of the ship lift; Rotate the adjusting nut counterclockwise. Under the tension of the spring, the end face oil scraping mechanism pushes the slider at the bottom of the oil tank to move inward along the guide rail, and the toothed oil scraping plate on the end face oil scraping mechanism contacts the toothed surface of the rack. Step 3: Adjust the toothed oil scraping mechanism: Press down the pull handle to disengage the pawl from the ratchet wheel, turn the pull handle sleeve to the left to increase the pressure between the toothed oil scraping plate and the toothed surface of the ship lift rack; turn the pull handle sleeve to the right to decrease the pressure between the toothed oil scraping plate and the toothed surface of the rack; after the pressure between the toothed oil scraping plate and the toothed surface of the rack is adjusted appropriately, release the pull handle. The pawl will lock itself with the ratchet wheel under the action of the spring, so that the toothed oil scraping plate and the toothed surface of the ship lift rack maintain a fixed clamping force. Step 4, Oil Stain Cleaning: As the ship lift descends, this device moves down with it. The toothed scraper scrapes oil from the roots, surfaces, and tips of the ship lift's racks, which then fall into the oil trough under gravity. During the descent, the lower V-shaped section of the end-face scraper scrapes oil from the sides and tips of the ship lift's racks, which then fall into the oil trough under gravity. Step 5: When there is not much oil on the tooth root and tooth surface, and only the oil on the side and tooth top surfaces of the rack needs to be cleaned, press the lever in the torque adjustment mechanism to disengage the pawl from the ratchet disc. Then rotate the lever sleeve to the far right and release the lever to lock the pawl and ratchet disc. At this time, the entire tooth surface oil scraping mechanism is disengaged from the ship lift rack, and only the end face oil scraping mechanism works. When the ship chamber rises or falls, the upper or lower end face of the V-shaped oil scraper on the end face oil scraper scrapes the oil on both sides and tooth top surfaces of the ship lift rack into the oil trough.

[0014] This invention provides a device and method for cleaning oil stains from the rack of a ship lift, which has the following technical advantages: 1) By installing this device on the rack cover of the ship lift, the oil stains on the rack can be quickly cleaned as the ship chamber rises or falls, eliminating the need for manual cleaning and effectively reducing the workload of maintenance personnel and improving the efficiency of cleaning oil stains from the ship lift rack.

[0015] 2) The structure is simple and reliable, and the operation is convenient. The device has no power mechanism. It cleans the oil stains on the rack by raising or lowering the cabin. Both the tooth surface scraper and the tooth top scraper are equipped with safety protection mechanisms, so the rack will not be damaged during use.

[0016] 3) By setting a toothed locking plate, it is possible to prevent the toothed oil scraper from getting caught on the toothed surface of the ship lift rack, which would cause the toothed oil scraper mechanism to break due to excessive force, and the fragments would fall onto the ship lift rack, affecting the normal operation of the ship lift; or damage the toothed surface of the ship lift rack during the operation of the ship lift.

[0017] 4) By setting up a torque adjustment mechanism, the clamping force between the oil scraper blade and the rack teeth of the ship lift can be adjusted, as well as whether it contacts the rack teeth. One function of the torque adjustment mechanism is that when the device is not in use, the mechanism can be pulled back and fixed in place using a lever. Another function is that the torsion spring acts as a buffer mechanism. During the oil sludge cleaning process, the torsion spring rotates within a small range, allowing the oil scraper blade to scrape oil from the top of the rack teeth to the root of the teeth and then from the root of the teeth to the top of the teeth as the ship lift descends. Without the torque adjustment mechanism, oil sludge cannot be scraped.

[0018] 5) By setting up an end-face oil scraping mechanism, it is possible to collect the oil scraped off by the tooth surface oil scraping mechanism and the tooth top oil scraping plate; at the same time, it is also possible to clean the oil on both sides and the tooth top surface of the ship lift rack.

[0019] 6) By setting the end face oil scraping adjustment component, the end face oil scraping mechanism can be elastically slid forward and backward, so that the tooth top oil scraping plate on the end face oil scraping mechanism always maintains elastic contact with the tooth top surface of the ship lift rack. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the installation of the present invention (first view).

[0021] Figure 2 This is a schematic diagram of the structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the tooth surface oil scraping mechanism and torque adjustment mechanism in this invention.

[0023] Figure 4 for Figure 3 A schematic diagram of the structure at point I.

[0024] Figure 5 This is a schematic diagram of the end-face oil scraping mechanism in this invention.

[0025] Figure 6 This is the end-face oil scraping adjustment component in the present invention.

[0026] Figure 7 This is a front view of the toothed locking piece in this invention.

[0027] Figure 8 This is a schematic diagram of the structure of the first planar bevel tooth in this invention.

[0028] Figure 9 This is a schematic diagram of the pawl and handle in this invention.

[0029] Figure 10 This is a schematic diagram of the torque adjustment mechanism in this invention.

[0030] Figure 11 This is a partially enlarged schematic diagram of the tooth surface oil scraper in this invention.

[0031] Figure 12 This is a schematic diagram of the installation of the present invention (second view).

[0032] In the diagram: 1. Base; 2. Tooth surface oil scraping mechanism; 3. End face oil scraping mechanism; 4. End face oil scraping adjustment assembly; 5. Torque adjustment mechanism; 6. Ship lift rack; 7. Rack cover; 201. Tooth surface oil scraping plate; 202. Scraper plate fixing shaft; 203. Tooth-shaped locking plate; 204. Bracket; 205. Fixing frame; 206. Bracket fixing shaft; 301. End face oil scraping plate; 302. Oil groove; 303. Guide plate; 304. Tooth top oil scraping plate; 401. Connecting plate; 402. Spring; 403. Adjusting nut; 404. Adjusting screw; 405. Support; 406. Slider; 407. Guide rail; 501. Pull handle; 502. Pull handle sleeve; 503. Ratchet disc; 504. Pawl; 505. Torsion spring. Detailed Implementation

[0033] like Figure 1-2 As shown, a rack oil cleaning device for a ship lift includes a base 1, which is bolted to a rack cover 7. A tooth surface scraping mechanism 2 is mounted on the base 1. The tooth surface scraping mechanism 2 adjusts the clamping force between the tooth surface scraping plate 201 and the tooth surface of the ship lift rack 6 via a torque adjusting mechanism 5. Below the tooth surface scraping mechanism 2 is an end face scraping mechanism 3, on which an oil trough 302 is fixedly mounted. The end face scraping mechanism 3 adjusts the contact force between the tooth tip scraping plate 304 and the tooth tip surface via an end face scraping adjusting component 4. When the ship compartment descends, the tooth surface scraping mechanism 2 and the end face scraping mechanism 3 automatically scrape off the oil from the tooth end faces and both sides of the ship lift rack 6. The oil automatically falls into the oil trough 302 under gravity.

[0034] Furthermore, the base 1 is welded from square steel tubes and is fixedly mounted on the rack cover 7 on the ship compartment by bolts, rising or falling together with the ship compartment.

[0035] The device is installed on the ship's compartment and can be raised and lowered along with the compartment, allowing the compartment to use the device to clean the oil stains on the rack during operation without requiring additional crawling power.

[0036] like Figure 3 As shown, the tooth surface oil scraping mechanism 2 further includes a tooth surface oil scraping plate 201, an oil scraping plate fixing shaft 202, a toothed locking piece 203, a bracket 204, a fixing frame 205, and a bracket fixing shaft 206.

[0037] Both ends of the toothed scraper 201 and the top of the bracket 204 are provided with through holes. The scraper fixing shaft 202 passes through the holes on the toothed scraper 201 and the bracket 204 and can be locked with nuts 2033 to complete the installation.

[0038] To prevent the toothed oil scraper 201 from getting caught on the toothed surface of the ship lift rack 6, which could cause the toothed oil scraper mechanism 2 to break due to excessive force and fragments falling onto the ship lift rack 6 and damaging the toothed surface of the rack 6 during ship lift operation, a toothed locking piece 203 is installed between the toothed oil scraper 201 and the bracket 204 as a safety device. The toothed oil scraper 201 and the bracket 204 are locked together by the toothed locking pieces 203 at both ends.

[0039] like Figure 7-8 As shown, the toothed locking piece 203 consists of a pair of planar bevel teeth, namely a first planar bevel tooth 2031 and a second planar bevel tooth 2032. The first planar bevel tooth 2031 is fixedly mounted on the toothed scraper plate 201, and the second planar bevel tooth 2032 is fixedly mounted on the bracket 204. When the scraper plate fixing shaft 202 passes through the holes on the toothed scraper plate 201 and the bracket 204, the first planar bevel tooth 2031 and the second planar bevel tooth 2032 engage. A spring 2034 is fitted on the scraper plate fixing shaft 202 outside the bracket 204, and a nut is threaded onto the scraper plate fixing shaft 202 outside the spring 2034, further locking the device through the nut and the spring 2034.

[0040] Under normal operating conditions, the first planar bevel gear 2031 and the second planar bevel gear 2032 are in a meshing and locking state, and the tooth surface scraper 201 and the scraper fixed shaft 202 remain relatively fixed. The tooth surface scraper 201 scrapes away the oil stains on the surface of the rack 6 as the ship lift moves downward.

[0041] When the downward pulling force of the toothed scraper 201 is greater than the locking force of the toothed locking plate 203 itself, the first planar bevel tooth 2031 installed on the toothed scraper 201 will rotate relative to the second planar bevel tooth 2032, and the toothed scraper 201 will flip upward and disengage from the toothed surface of the ship lift rack 6, protecting the toothed surface of the ship lift rack 6 from being scratched.

[0042] The lower end of the bracket 204 is fitted onto the bracket fixing shaft 206, and the bracket 204 and the bracket fixing shaft 206 are connected by a torsion spring 505. One end of the torsion spring 505 is fixedly installed on the lower end of the bracket 204, and the other end is fixed on the bracket fixing shaft 206.

[0043] The function of the torsion spring 505 is to keep the bracket 204 and the bracket fixing shaft 206 relatively fixed, and the torsion of the torsion spring 505 can enable the bracket 204 to rotate within a small range relative to the bracket fixing shaft 206. This allows the toothed oil scraper 201 to scrape oil from the tooth tip to the tooth root surface and then from the tooth root surface to the tooth tip surface as the ship chamber descends.

[0044] The bracket fixing shaft 206 is rotatably mounted on the fixing frame 205, which is fixed to the base 1. The fixing frame 205 is provided with a limiting plate on the side near the ship lift rack 6, which can support and limit the position of the bracket 204 facing the ship lift rack 6.

[0045] The contact force between the tooth surface scraper 201 and the tooth surface can be adjusted by the torque adjustment mechanism 5.

[0046] The torque adjustment mechanism 5 includes a handle 501, a handle sleeve 502, a ratchet disc 503, a pawl 504, and a torsion spring 505. The handle sleeve 502 is fixed to the bracket fixing shaft 206, and the handle 501 is installed inside the handle sleeve 502 and slides in cooperation with the handle sleeve 502. A spring is installed inside the handle sleeve 502, and the spring pushes the handle 501 upward. A pawl 504 is installed at the lower end of the handle 501, and the pawl 504 engages with the ratchet disc 503, which is fixedly installed on the machine base 1.

[0047] When the pull handle 501 is pressed to disengage the pawl 504 from the ratchet disc 503, rotating the pull handle sleeve 502 will drive the bracket fixing shaft 206 to rotate, and the bracket fixing shaft 206 will drive the bracket 204 to rotate. After adjusting the pressure between the toothed oil scraper 201 and the toothed surface of the ship lift rack 6, the pull handle 501 is released. Under the upward pushing action of the spring, the pull handle 501 moves upward and drives the pawl 504 to engage with the ratchet disc 503, thus locking itself and maintaining a fixed clamping force between the toothed oil scraper 201 on the toothed oil scraper mechanism 2 and the toothed surface of the ship lift rack 6.

[0048] The end face oil scraping mechanism 3 includes an end face oil scraping plate 301, an oil groove 302, a guide plate 303, and a tooth top oil scraping plate 304.

[0049] The end-face oil scraper 301 has a V-shaped structure and includes an oil scraping part 3011. A limiting part 3012 is provided on the outer side of the oil scraping part 3011. The oil scraping part 3011 and the limiting part 3012 are perpendicular to each other and work together to divert oil sludge. Oil can be scraped during the upward or downward movement of the ship compartment, and the oil sludge can be scraped into the oil tank 302.

[0050] The end faces of the end scraper 301 contact the two sides of the rack, and the end face of the tooth top scraper 304 in the middle contacts the tooth top surface of the rack 6 of the ship lift. When the ship chamber rises or falls, the end face scraper 301 and the tooth top scraper 304 can simultaneously scrape off the oil stains on the two sides and the tooth top surface of the rack. The scraped oil stains automatically fall into the oil tank 302 under the action of gravity.

[0051] Preferably, a guide plate 303 is fixedly installed on the toothed scraper 304. The guide plate 303 can maintain a safe distance between the toothed scraper 304 and the rack, preventing the toothed scraper 304 from getting stuck during the rising or falling process.

[0052] The end face oil scraping mechanism 3 can adjust the contact force between the tooth tip oil scraping plate 304 and the tooth tip surface of the ship lift rack 6 through the end face oil scraping adjustment component 4.

[0053] The end face oil scraping adjustment assembly 4 includes a connecting plate 401, a compression spring 402, an adjusting nut 403, an adjusting screw 404, a support 405, a slider 406, and a guide rail 407.

[0054] One end of the adjusting screw 404 is fixedly welded to the connecting plate 401, which is bolted to the oil tank 302. The other end of the adjusting screw 404 freely passes through the support 405 and is threadedly connected to the adjusting nut 403. The support 405 is fixedly connected to the machine base 1. A compression spring 402 is fitted on the adjusting screw 404 between the connecting plate 401 and the support 405. Under the elastic force of the compression spring 402, the toothed oil scraper 304 on the end face oil scraper mechanism 3 is pressed tightly against the toothed surface. The end face of the adjusting nut 403 is in contact with the outer end face of the support 405.

[0055] There are two guide rails 407, which are fixedly installed on the base 1. There are four sliders 406 in total, with two sliders 406 installed on each guide rail 407. The top surface of each slider 406 is fixedly connected to the bottom surface of the oil tank 302. When the adjusting nut 403 is rotated, the tension of the spring 402 keeps the toothed scraper plate 304 on the end face scraper mechanism 3 in contact with the toothed surface.

[0056] Furthermore, the tooth surface scraper 201 and the tooth top scraper 304 are both non-metallic carbon fiber boards, and the surface of the fiber board is coated with an oleophobic coating to prevent grease from adhering.

[0057] A method for cleaning oil stains from the rack of a ship lift includes the following steps: Step 1, Initial positioning and installation of the device: After raising the ship lift cabin to its highest position, install this device on the corresponding position on the rack and pinion guard 7 on the cabin.

[0058] Step 2: Adjust the end face oil scraping mechanism 3: Rotate the adjusting nut 403 clockwise. Driven by the adjusting screw 404, the slider 406 at the bottom of the oil tank 302 of the end face oil scraping mechanism 3 moves outward along the guide rail 407, compressing the spring 402. The toothed scraper 304 on the end face oil scraping mechanism 3 disengages from the toothed surface of the rack 6 of the ship lift. Rotate the adjusting nut 403 counterclockwise. Under the tension of the spring 402, the slider 406 at the bottom of the oil tank 302 of the end face oil scraping mechanism 3 moves inward along the guide rail 407, and the toothed scraper 304 on the end face oil scraping mechanism 3 contacts the toothed surface of the rack. By rotating the adjusting nut 403, the contact between the toothed scraper 304 and the toothed surface of the rack can be adjusted. The spring 402 can eliminate gaps during operation, ensuring that the toothed scraper 304 and the toothed surface of the rack are always in contact.

[0059] Step 3: Adjust the toothed oil scraping mechanism 2: Press the pull handle 501 to disengage the pawl 504 from the ratchet disc 503. Turning the pull handle sleeve 502 to the left will increase the pressure between the toothed oil scraping plate 201 and the toothed surface of the ship lift rack 6; turning the pull handle sleeve 502 to the right will decrease the pressure between the toothed oil scraping plate 201 and the toothed surface of the rack. After the pressure between the toothed oil scraping plate 201 and the toothed surface of the rack is adjusted appropriately, after releasing the pull handle 501, the pawl 504 and the ratchet disc 503 can self-lock, so that the toothed oil scraping plate 201 and the toothed surface of the rack maintain a fixed clamping force.

[0060] Step 4, Oil Stain Cleaning: As the ship lift descends, this device moves down with it. The toothed scraper 201 collects and scrapes the oil stains on the root, surface, and top of the ship lift rack 6 downwards. The oil stains automatically fall into the oil trough 302 under gravity. During the descent of the ship lift, the lower V-shaped end face of the end face scraper 301 and the top of the rack 6 scrapes the oil stains on both sides and the top of the rack 6 downwards. The oil stains automatically fall into the oil trough 302 under gravity.

[0061] Step 5: When there is not much oil on the tooth root and tooth surface, and only the oil on the side and tooth top surfaces of the rack needs to be cleaned, press the lever 501 in the torque adjustment mechanism 5 to disengage the pawl 504 from the ratchet disc 503. Then rotate the lever sleeve 502 to the rightmost end and release the lever 501 to lock the pawl 504 from the ratchet disc 503. At this time, the entire tooth surface oil scraping mechanism 2 is disengaged from the ship lift rack 6, and only the end face oil scraping mechanism 3 can work. When the ship compartment rises or falls, the upper or lower end face of the V-shaped oil scraper on the end face oil scraping mechanism 3 can scrape the oil on both sides and tooth top surfaces of the ship lift rack 6 into the oil trough.

Claims

1. A device for cleaning oil stains from the rack of a ship lift, characterized in that: The system includes a base (1), which is mounted on a rack cover (7). The rack cover (7) is mounted on the ship compartment and moves up and down with the ship compartment. A tooth surface oil scraping mechanism (2) is mounted on the base (1). The tooth surface oil scraping mechanism (2) contacts the tooth surface of the ship lift rack (6) and adjusts the clamping force through a torque adjustment mechanism (5). An end face oil scraping mechanism (3) is mounted below the tooth surface oil scraping mechanism (2). The end face oil scraping mechanism (3) receives oil and adjusts the contact and disengagement with the tooth top surface of the ship lift rack (6) through an end face oil scraping adjustment component (4). The toothed surface oil scraping mechanism (2) includes a toothed surface oil scraping plate (201), which is mounted on a bracket (204) via an oil scraping plate fixing shaft (202). The toothed surface oil scraping plate (201) and the bracket (204) are locked together by a toothed locking piece (203). The lower end of the bracket (204) is fixedly connected to a bracket fixing shaft (206), which is rotatably mounted on a fixed frame (205). The fixed frame (205) is fixedly mounted on a machine base (1), and the connection between the bracket fixing shaft (206) and the fixed frame (205) is adjusted by a torque adjustment mechanism (5). The toothed locking plate (203) includes a first bevel tooth (2031) and a second bevel tooth (2032). The first bevel tooth (2031) is fixedly installed on the bracket (204), and the second bevel tooth (2032) is fixedly installed on the side of the toothed oil scraper (201). The first bevel tooth (2031) and the second bevel tooth (2032) are locked by the spring through the nut (2033).

2. The oil stain cleaning device for a ship lift rack according to claim 1, characterized in that: The torque adjustment mechanism (5) includes a ratchet disc (503), which is fixedly mounted on the base (1) and freely passes through the bracket fixing shaft (206). The ratchet disc (503) engages with a pawl (504), the upper end of which is connected to a pull handle (501). The pull handle (501) slides with a pull handle sleeve (502) and is pushed upward by a spring. The pull handle sleeve (502) is fixed on the bracket fixing shaft (206).

3. The oil stain cleaning device for a ship lift rack according to claim 2, characterized in that: The end-face oil scraping mechanism (3) includes a tooth-top oil scraper (304), which contacts the tooth-top surface of the ship lift rack (6). End-face oil scrapers (301) are fixed at both ends of the tooth-top oil scraper (304), and the end-face oil scrapers (301) contact the two sides of the ship lift rack (6). An oil groove (302) is fixed at the lower end of the tooth-top oil scraper (304).

4. The oil stain cleaning device for a ship lift rack according to claim 3, characterized in that: The end face scraper (301) has a V-shaped structure.

5. The oil stain cleaning device for a ship lift rack according to claim 3, characterized in that: A guide plate (303) is fixedly installed at the lower end of the toothed scraper (304).

6. The oil stain cleaning device for a ship lift rack according to claim 3, characterized in that: The end face oil scraping adjustment assembly (4) includes an adjustment screw (404), one end of which is connected to the oil groove (302). The lower end of the oil groove (302) is slidably mounted on the guide rail (407) via a slider (406). The guide rail (407) is fixed on the base (1). The other end of the adjustment screw (404) freely passes through the support (405) and is threadedly connected to the adjustment nut (403). A compression spring (402) is sleeved on the adjustment screw (404) between the connecting plate (401) and the support (405).

7. The oil stain cleaning device for a ship lift rack according to claim 6, characterized in that: The tooth surface scraper (201) and the tooth top scraper (304) are both non-metallic carbon fiber boards, and the surface of the fiber board is coated with an oleophobic coating.

8. A method for cleaning oil stains using a ship lift rack oil stain cleaning device according to claim 7, comprising the following steps: Step 1, Initial positioning and installation: After raising the ship lift cabin to the highest position, install this device on the corresponding position on the rack cover (7) on the cabin; Step 2, Adjust the end face oil scraping mechanism (3): Rotate the adjusting nut (403) clockwise. Under the drive of the adjusting screw (404), the slider (406) at the bottom of the oil tank (302) of the end face oil scraping mechanism (3) moves outward along the guide rail (407). The compression spring (402) is compressed, and the toothed scraper (304) on the end face oil scraping mechanism (3) disengages from the toothed surface of the rack (6) of the ship lift. Rotate the adjusting nut (403) counterclockwise. Under the tension of the compression spring (402), the slider (406) at the bottom of the oil tank (302) of the end face oil scraping mechanism (3) moves inward along the guide rail (407), and the toothed scraper (304) on the end face oil scraping mechanism (3) contacts the toothed surface of the rack. Step 3, Adjust the tooth surface scraping mechanism (2): Press the pull handle (501) to disengage the pawl (504) from the ratchet disc (503), turn the pull handle sleeve (502) to the left to increase the pressure between the tooth surface scraping plate (201) and the tooth surface of the ship lift rack (6); turn the pull handle sleeve (502) to the right to decrease the pressure between the tooth surface scraping plate (201) and the tooth surface of the rack; when the pressure between the tooth surface scraping plate (201) and the tooth surface of the rack is adjusted appropriately, release the pull handle (501), and the pawl (504) will self-lock with the ratchet disc (503) under the action of the spring, so that the tooth surface scraping plate (201) and the tooth surface of the ship lift rack (6) maintain a fixed clamping force; Step 4, Oil Stain Cleaning: Operate the ship lift cabin to descend. During the descent of the cabin, this device descends with the cabin. The toothed oil scraper (201) collects and scrapes the oil stains on the root, tooth surface and tooth top surface of the ship lift rack (6) downwards. The oil stains automatically fall into the oil tank (302) under the action of gravity. During the descent of the cabin, the lower half of the V-shaped end face of the end face oil scraper (301) scrapes the oil stains on both sides and tooth top surface of the ship lift rack (6) downwards. The oil stains automatically fall into the oil tank (302) under the action of gravity. Step 5: When there is not much oil on the tooth root and tooth surface, and only the oil on the side and tooth top surfaces of the rack needs to be cleaned, press the lever (501) in the torque adjustment mechanism (5) to disengage the pawl (504) from the ratchet disc (503), then rotate the lever sleeve (502) to the rightmost end, release the lever (501) to lock the pawl (504) from the ratchet disc (503), at this time the entire tooth surface scraping mechanism (2) is disengaged from the ship lift rack (6), and only the end face scraping mechanism (3) works; when the ship compartment rises or falls, the upper or lower end face of the V-shaped scraping plate on the end face scraping mechanism (3) scrapes the oil on both sides and tooth top surfaces of the ship lift rack (6) into the oil trough.

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