An oil stain cleaning device for mechanical equipment maintenance

Abstract

The application provides an oil stain cleaning device for mechanical equipment maintenance, and relates to the field of oil stain cleaning in mechanical maintenance.The oil stain cleaning device comprises a handle, a receiving sleeve is hingedly connected to the front end of the handle, an electric cylinder is connected between the top of the rear end of the receiving sleeve and the top of the front end of the handle, an electric motor is fixedly installed on the inner wall of the front side of the receiving sleeve, a protective sleeve is connected to the outer wall of the front side of the receiving sleeve through connecting bolts, a limiting rod is connected to the top of the front end of the protective sleeve, a reciprocating sleeve is slidably connected in the protective sleeve, a connecting rod is threadedly connected to the front end of the reciprocating sleeve, a fixing sleeve is slidably connected to the outer side wall of the connecting rod, a connecting head is hingedly connected to the front end of the connecting rod, and a brush disc is clamped to the bottom of the connecting head.The electric cylinder can be used for adjusting the included angle between the handle and the receiving sleeve, the oil stain cleaning device can adapt to various cleaning environments, the use convenience of the oil stain cleaning device is improved, the contact between the maintenance workers and the mechanical equipment is reduced, and the problem that the oil stain is not easy to handle and is repeatedly smeared when the oil stain is manually cleaned is solved.

Description

Technical Field

[0001] This invention relates to the field of oil stain cleaning technology for mechanical maintenance, and in particular to an oil stain cleaning device for mechanical equipment maintenance. Background Technology

[0002] During the use of machinery, lubricating oil is applied to the joints to reduce mechanical wear and protect bearings and sleeves. As the machinery is used, the lubricating oil may leak due to high temperature and pressure. Also, oil stains may remain on the equipment after maintenance. Therefore, it is necessary to clean the oil stains on the machinery in a timely manner to avoid affecting its use. Thus, an oil stain cleaning device for machinery maintenance is a device used to clean residual oil stains on machinery.

[0003] When repairing existing machinery, especially when dealing with machines that cannot be disassembled and are heavily soiled with oil, the connection points are covered in oil. When maintenance workers try to clean them manually, their cloths quickly become soaked with oil, resulting in poor cleaning effectiveness. It is difficult to clean the oil in hard-to-reach areas, and the oil on the machinery also sticks to the maintenance workers' clothes. When the maintenance workers come into contact with the machinery again, the oil is smeared back on, causing the oil cleaning process to be repeated repeatedly and making it extremely difficult to clean thoroughly. Summary of the Invention

[0004] This disclosure relates to an oil stain cleaning device for mechanical equipment maintenance. The device can adjust the angle between the handle and the receiving sleeve via an electric cylinder. The oil stain cleaning device can adapt to various cleaning environments, which helps to improve the ease of use of the oil stain cleaning device, reduces the contact between maintenance workers and mechanical equipment, and the connector sprays cleaning liquid onto the bristles through the spray head while reciprocating at high speed, so as to ensure the supply of cleaning liquid during oil stain cleaning, which greatly improves the oil stain cleaning efficiency and cleaning effect.

[0005] In a first aspect, this disclosure provides an oil stain cleaning device for mechanical equipment maintenance, specifically comprising: a handle; a power cord connected to the rear end of the handle, a receiving sleeve hinged to the front end of the handle, an electric cylinder connected between the top of the rear end of the receiving sleeve and the top of the front end of the handle, an electric motor fixedly installed on the inner front wall of the receiving sleeve, a protective sleeve connected to the outer front wall of the receiving sleeve by connecting bolts, a limit rod connected to the top of the front end of the protective sleeve, a reciprocating slide sleeve slidably connected inside the protective sleeve, a connecting rod threadedly connected to the front end of the reciprocating slide sleeve, a fixing sleeve slidably connected to the outer side wall of the connecting rod, an angle limiting structure provided inside the front end of the connecting rod, a connector hinged to the front end of the connecting rod, and a brush plate snapped into the bottom of the connector.

[0006] Furthermore, the front end of the motor is connected to a rotating head, and a continuous S-shaped guide rail groove is opened in the outer wall of the rotating head. A reciprocating sleeve is sleeved on the outside of the rotating head. The left and right rear ends of the reciprocating sleeve are threaded with fixing bolts. The inner ends of the fixing bolts are slidably connected in the guide rail groove. A slide rod is fixedly connected to the front end of the reciprocating sleeve, and a threaded rod is fixedly connected to the front end of the slide rod. Strip-shaped limiting grooves are opened in the upper and lower side walls of the slide rod and the threaded rod.

[0007] Furthermore, the protective sleeve has guide grooves on the left and right inner sidewalls at the rear end, and the fixing bolts connected to the rear ends of the reciprocating slide sleeve are slidably connected in the guide grooves. The protective sleeve has a sliding hole in the middle of the front sidewall, and a limit groove is formed at the top middle of the sliding hole. A limit rod is connected to the top middle of the limit groove, and the bottom of the limit rod is threaded to a fixed limit block and stuck in the limit groove. The fixed limit block is slidably connected in the limit groove at the top of the front slide rod of the reciprocating slide sleeve. The protective sleeve has four rotating holes in a rectangular array on the front outer sidewall, and each rotating hole is rotatably connected to a magnetic limit block.

[0008] Furthermore, the rear end of the connecting rod is provided with a threaded groove to connect to the threaded rod at the front end of the reciprocating slide sleeve. Eight guide sliders are evenly arranged on the annular inner sidewall of the front end of the connecting rod. A fixing block is provided in the middle of the arc-shaped upper and lower inner sidewalls of the fixed sleeve. The fixing block is slidably connected in the limiting groove at the top of the front slide rod of the reciprocating slide sleeve. A connecting piece is provided in the middle of the upper and lower outer sidewalls at the rear end of the fixed sleeve. The connecting piece is locked on the rear side of the magnetic limiting block that is rotatably connected to the front sidewall of the protective sleeve.

[0009] Furthermore, the angle limiting structure consists of a pressure plate, a guide groove, an inner hole, a support spring, and limiting teeth. The pressure plate has two symmetrically arranged circular holes that are slidably connected to the front end of the connecting rod. Eight guide grooves are evenly spaced on the outer side wall of the pressure plate. The guide grooves are slidably connected to the guide slider on the annular inner wall of the front end of the connecting rod. Inner holes are opened in the opposite side walls of the two pressure plates. Guide rods are slidably connected in the inner holes. A support spring is provided between the two pressure plates. Limiting teeth are opened in the opposite side walls of the two pressure plates.

[0010] Furthermore, the connector has a limiting toothed disc on the left and right inner walls at the rear end, which meshes with the limiting teeth of the angle limiting structure. The connector has a spray head with three side openings on the bottom end face, a fixing hook on the bottom rear side, and a connector and liquid supply pipe connection on the top rear side.

[0011] Furthermore, a movable hook is rotatably connected inside the front end of the connector. The movable hook is in a position symmetrical to the fixed hook, and a torsion spring is sleeved on the pivot in the middle of the left and right side walls of the movable hook.

[0012] Furthermore, the bottom of the brush disk is provided with bristles that are arc-shaped in the middle, and the inner walls of the front and rear ends of the brush disk are engaged with the fixed hook at the rear end of the bottom of the connector and the movable hook at the front end of the connector.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. When using this oil stain cleaning device, the angle between the handle and the receiving sleeve can be adjusted by the electric cylinder. The oil stain cleaning device can adapt to various cleaning environments, which helps to improve the ease of use of the oil stain cleaning device, reduce the contact between maintenance workers and mechanical equipment, and the connector sprays cleaning liquid onto the bristles through the spray head while reciprocating at high speed, so as to ensure the supply of cleaning liquid during oil stain cleaning, which greatly improves the oil stain cleaning efficiency and cleaning effect.

[0015] 2. The structures of this invention are detachable from each other, allowing for the combination of different cleaning tools to improve the versatility of the device. The connecting rod is connected to the threaded rod of the reciprocating sleeve via a threaded groove, which facilitates the replacement of the connecting rod. The brush disc is connected to the bottom of the connector head by a snap-fit ​​mechanism, so that it can be replaced in a timely manner when the brush bristles cannot clean the area.

[0016] 3. The fixing sleeve is secured by a magnetically connected magnetic limiting block to ensure the firmness of the connection between the connecting rod and the threaded rod and to prevent the connecting rod from accidentally falling off during high-speed movement.

[0017] 4. By pressing the two pressure plates simultaneously, the two pressure plates compress the support springs and move closer to each other, thereby releasing the engagement of the limiting teeth and the limiting tooth plate. This allows the connector to be adjusted in angle so that the brush plate connected to the bottom of the connector can better contact the mechanical equipment to be cleaned of oil stains, improving the ease of use of the cleaning device and enhancing the oil stain cleaning effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the right front side axial view of the mechanical oil stain cleaning device according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall disassembled structure of the mechanical oil stain cleaning device according to an embodiment of the present invention;

[0023] Figure 3This is a cross-sectional structural diagram of the receiving sleeve and protective sleeve of the mechanical oil stain cleaning device according to an embodiment of the present invention;

[0024] Figure 4 This is a cross-sectional view of the protective sleeve of the mechanical oil stain cleaning device according to an embodiment of the present invention;

[0025] Figure 5 This is a longitudinal section diagram of the protective sleeve of the mechanical oil stain cleaning device according to an embodiment of the present invention;

[0026] Figure 6 This is an embodiment of the mechanical oil stain cleaning device of the present invention. Figure 5 A magnified structural diagram at point A;

[0027] Figure 7 This is a longitudinal section diagram of the connector of the mechanical oil stain cleaning device according to an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the connection structure of the connecting rod and the fixing sleeve of the mechanical oil stain cleaning device according to an embodiment of the present invention.

[0029] List of reference numerals

[0030] 1. Handle; 2. Receiving sleeve; 3. Electric cylinder;

[0031] 4. Electric motor; 401. Rotating head; 402. Guide rail groove;

[0032] 5. Protective sleeve; 501. Sliding hole; 502. Limiting groove; 503. Rotary hole; 504. Guide groove;

[0033] 6. Reciprocating sleeve; 601. Slide rod; 602. Threaded rod; 603. Limiting groove; 7. Fixing bolt;

[0034] 8. Connecting rod; 801. Threaded groove; 802. Guide slider;

[0035] 9. Fixing sleeve; 901. Fixing strip; 902. Connecting piece;

[0036] 10. Magnetic limiting block;

[0037] 11. Limiting rod; 1101. Fixed limiting block;

[0038] 12. Connecting bolts;

[0039] 13. Connector; 1301. Limiting gear plate; 1302. Spray head; 1303. Fixing hook;

[0040] 14. Brush plate; 1401. Brush bristles; 15. Movable hook; 1501. Torsion spring; 16. Angle limiting structure;

[0041] 1601, Pressure plate; 1602, Guide groove; 1603, Inner hole; 1604, Support spring; 1605, Limiting engagement teeth; 17, Guide rod;

[0042] 18. Liquid supply pipe. Detailed Implementation

[0043] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0044] Example 1: Please refer to Figures 1 to 8 As shown:

[0045] This invention provides an oil stain cleaning device for mechanical equipment maintenance, including a handle 1; a power cord is connected to the rear end of the handle 1, a receiving sleeve 2 is hinged to the front end of the handle 1, an electric cylinder 3 is connected between the top of the rear end of the receiving sleeve 2 and the top of the front end of the handle 1, an electric motor 4 is fixedly installed on the inner front wall of the receiving sleeve 2, a protective sleeve 5 is connected to the outer front wall of the receiving sleeve 2 by a connecting bolt 12, a limit rod 11 is connected to the top of the front end of the protective sleeve 5, a reciprocating slide sleeve 6 is slidably connected inside the protective sleeve 5, a connecting rod 8 is threadedly connected to the front end of the reciprocating slide sleeve 6, a fixing sleeve 9 is slidably connected to the outer side wall of the connecting rod 8, an angle limiting structure 16 is provided inside the front end of the connecting rod 8, a connector 13 is hinged to the front end of the connecting rod 8, and a brush plate 14 is snapped into the bottom of the connector 13.

[0046] Among them, the front end of the motor 4 is connected to the rotating head 401, and the outer side wall of the rotating head 401 is provided with a continuous S-shaped guide rail groove 402. The reciprocating sleeve 6 is sleeved on the outside of the rotating head 401. The left and right rear ends of the reciprocating sleeve 6 are threadedly connected to the fixing bolts 7. The inner end of the fixing bolts 7 is slidably connected in the guide rail groove 402. The front end of the reciprocating sleeve 6 is fixedly connected to the slide rod 601, and the front end of the slide rod 601 is fixedly connected to the threaded rod 602. The upper and lower side walls of the slide rod 601 and the threaded rod 602 are both provided with strip-shaped limiting grooves 603.

[0047] Among them, the protective sleeve 5 has guide grooves 504 in the left and right inner side walls of the rear end, and the fixing bolts 7 connected to the rear ends of the left and right side walls of the reciprocating slide sleeve 6 are slidably connected in the guide grooves 504. The protective sleeve 5 has a sliding hole 501 in the middle of the front side wall, and a limit groove 502 is opened in the middle of the top of the sliding hole 501. A limit rod 11 is connected to the middle of the top of the limit groove 502. The bottom of the limit rod 11 is threaded to the fixed limit block 1101 and is stuck in the limit groove 502. The fixed limit block 1101 is slidably connected in the limit sliding groove 603 at the top of the front slide rod 601 of the reciprocating slide sleeve 6. The protective sleeve 5 has four rotating holes 503 in a rectangular array on the front outer side wall, and each rotating hole 503 is rotatably connected to a magnetic limit block 10.

[0048] Using the above technical solution, the electric cylinder 3 controls the connection between the handle 1 and the receiving sleeve 2 to adjust the angle between them, allowing the front connector 13 to better reach the area of ​​the machinery where oil stains need to be cleaned. This increases the ease of use of the device and improves the ability to clean oil stains in hard-to-reach areas of the machinery. The electric motor 4 drives the rotating head 401 to rotate. The rotating head 401 is connected to the reciprocating sleeve 6 via the guide rail groove 402 and the fixing bolt 7. When the rotating head 401 rotates at high speed, the fixing bolt 7 slides in the guide rail groove 402 to control the reciprocating sleeve 6 to move back and forth. This controls the high-speed reciprocating motion of the connector 13, allowing the brush 14 to scrub the oil stains. The reciprocating sleeve 6 is slidably connected in the protective sleeve 5. The fixing limiting block 1101, which is engaged in the top limiting groove 502 of the sliding hole 501, cooperates with the limiting groove 603 of the reciprocating sleeve 6 to ensure the stability of the reciprocating sleeve 6's forward and backward sliding.

[0049] Example 2:

[0050] Based on the oil stain cleaning device for mechanical equipment maintenance provided in Embodiment 1, the device adjusts the included angle between the receiving sleeve 2 and the handle 1 by setting an electric cylinder 3 between the handle 1 and the receiving sleeve 2, so as to increase the convenience of use of the device and improve the ability to clean oil stains in dead corners of mechanical equipment. The reciprocating sliding sleeve 6 is controlled by the motor 4 to move back and forth at high speed, which facilitates the improvement of oil stain cleaning efficiency. The oil stain cleaning device for mechanical equipment maintenance also includes: a threaded groove 801 at the rear end of the connecting rod 8 is connected to the threaded rod 602 at the front end of the reciprocating sliding sleeve 6; eight guide sliders 802 are evenly arranged on the annular inner side wall at the front end of the connecting rod 8; a fixing strip 901 is provided in the middle of the arc-shaped upper and lower inner side walls of the fixing sleeve 9; the fixing strip 901 is slidably connected in the limiting groove 603 at the top of the front sliding rod 601 of the reciprocating sliding sleeve 6; a connecting piece 902 is provided in the middle of the upper and lower outer walls at the rear end of the fixing sleeve 9; the connecting piece 902 is stuck on the rear side of the magnetic limiting block 10 rotatably connected to the front side wall of the protective sleeve 5.

[0051] The angle limiting structure 16 consists of a pressure plate 1601, a guide groove 1602, an inner hole 1603, a support spring 1604, and a limiting engagement tooth 1605. The pressure plate 1601 has two symmetrically arranged circular holes that are slidably connected to the front end of the connecting rod 8. Eight guide grooves 1602 are opened at equal intervals on the outer side wall of the pressure plate 1601. The guide grooves 1602 are slidably connected to the guide slider 802 on the annular inner wall of the front end of the connecting rod 8. An inner hole 1603 is opened in the opposite side wall of the two pressure plates 1601. A guide rod 17 is slidably connected in the inner hole 1603. A support spring 1604 is arranged between the two pressure plates 1601. Limiting engagement teeth 1605 are opened in the opposite side wall of the two pressure plates 1601.

[0052] By adopting the above technical solution, the connecting rod 8 with the threaded groove 801 and the threaded rod 602 at the front end of the reciprocating sliding sleeve 6 are connected to increase the convenience of replacing the connecting rod 8. The fixed sleeve 9, which is slidably connected to the outside of the connecting rod 8, is connected to the front side wall of the protective sleeve 5 through the connecting piece 902, and is fixed by the magnetic limit block 10 connected by magnetic attraction to ensure the firmness of the connection between the connecting rod 8 and the threaded rod 602 and to prevent the connecting rod 8 from accidentally falling off during high-speed movement. By pressing the two pressure plates 1601 at the same time, the two pressure plates 1601 compress the support spring 1604 and move closer to each other, thereby releasing the engagement of the limit engagement tooth 1605 and the limit tooth plate 1301. This allows the angle adjustment of the connecting head 13 to be controlled so that the brush plate 14 connected to the bottom of the connecting head 13 can better contact the mechanical equipment to be cleaned of oil stains, thereby improving the convenience of using the cleaning device and improving the oil stain cleaning effect.

[0053] Example 3:

[0054] Based on the oil stain cleaning device for mechanical equipment maintenance provided in Embodiment 1, the device adjusts the included angle between the receiving sleeve 2 and the handle 1 by setting an electric cylinder 3 between the handle 1 and the receiving sleeve 2, so as to increase the convenience of use of the device and improve the ability to clean oil stains in dead corners of mechanical equipment. The reciprocating sliding sleeve 6 is controlled by the motor 4 to move back and forth at high speed, which facilitates the improvement of oil stain cleaning efficiency. The oil stain cleaning device for mechanical equipment maintenance also includes: a limiting toothed disc 1301 is provided on the left and right inner walls of the rear end of the connector 13, the limiting toothed disc 1301 and the limiting biting teeth 1605 of the angle limiting structure 16 are engaged, a spray head 1302 with three side openings is provided in the bottom end face of the connector 13, a fixing hook 1303 is provided on the bottom rear side of the connector 13, and a connector and liquid supply pipe 18 are provided on the top rear side of the connector 13.

[0055] The connector 13 has a movable hook 15 rotatably connected to its front end. The movable hook 15 is located symmetrically to the fixed hook 1303. A torsion spring 1501 is sleeved on the pivot in the middle of the left and right side walls of the movable hook 15.

[0056] The bottom of the brush plate 14 is provided with bristles 1401 that are arc-shaped in the middle, and the inner walls of the front and rear ends of the brush plate 14 are engaged with the fixed hook 1303 at the rear end of the bottom of the connector 13 and the movable hook 15 at the front end of the connector 13.

[0057] Using the above technical solution, the brush plate 14 is fixed to the bottom of the connector 13 by the fixing hook 1303 and the movable hook 15 at the front end of the connector 13, thereby improving the convenience of replacing the brush plate 14. Then, the connector at the rear of the top of the connector 13 and the liquid supply pipe 18 are connected so that the cleaning liquid can be evenly sprayed onto the bristles 1401 of the brush plate 14 from the spray head 1302 at the bottom of the connector 13. When the connector 13 reciprocates at high speed, the oil stains from mechanical maintenance can be quickly cleaned to keep the mechanical equipment clean.

[0058] The specific usage and function of this embodiment: In this invention, the angle between the receiving sleeve 2 and the handle 1 is first adjusted by the electric cylinder 3 so that the front connector 13 can better reach the position of the mechanical equipment that needs to be cleaned of oil stains. Then, the motor 4 controls the reciprocating sliding sleeve 6 to move back and forth through the high-speed rotating head 401. It is connected to the connector 13 through the connecting rod 8. The brush plate 14 at the bottom of the connector 13 is controlled to clean the oil stains left by the maintenance of the mechanical equipment. At the same time, the two pressure plates 1601 are pressed, and the two pressure plates 1601 compress the support spring 1604 and move closer to each other, thereby releasing the engagement of the limiting engagement tooth 1605 and the limiting tooth plate 1301. The angle of the connector 13 can be adjusted so that the brush plate 14 connected to the bottom of the connector 13 can better contact the mechanical equipment to be cleaned of oil stains. During the brushing and cleaning, the spray head 1302 at the bottom of the connector 13 sprays the cleaning liquid evenly onto the bristles 1401 of the brush plate 14, saving cleaning liquid while ensuring a good cleaning effect.

[0059] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. An oil stain cleaning device for mechanical equipment maintenance, comprising a handle (1); characterized in that: The handle (1) is connected to a power cord at its rear end and a receiving sleeve (2) is hinged to the front end of the handle (1). An electric cylinder (3) is connected between the top of the rear end of the receiving sleeve (2) and the top of the front end of the handle (1). An electric motor (4) is fixedly installed on the inner wall of the front side of the receiving sleeve (2). The protective sleeve (5) is connected to the outer wall of the front side of the receiving sleeve (2) by a connecting bolt (12). A limit rod (11) is connected to the top of the front end of the protective sleeve (5). A reciprocating slide sleeve (6) is slidably connected inside the protective sleeve (5). A connecting rod (8) is threadedly connected to the front end of the reciprocating slide sleeve (6). A fixing sleeve (9) is slidably connected to the outer wall of the connecting rod (8). An angle limiting structure (16) is provided inside the front end of the connecting rod (8). A connector (13) is hinged to the front end of the connecting rod (8). A brush plate (14) is snapped into the bottom of the connector (13). The front end of the motor (4) is connected to a rotating head (401). A continuous S-shaped guide rail groove (402) is opened in the outer side wall of the rotating head (401). The reciprocating sleeve (6) is sleeved on the outside of the rotating head (401). The left and right rear ends of the reciprocating sleeve (6) are threaded with fixing bolts (7). The inner end of the fixing bolt (7) is slidably connected in the guide rail groove (402). The front end of the reciprocating sleeve (6) is fixedly connected with a slide rod (601). The front end of the slide rod (601) is fixedly connected with a threaded rod (602). The upper and lower side walls of the slide rod (601) and the threaded rod (602) are both provided with strip-shaped limiting grooves (603). The protective sleeve (5) has guide grooves (504) in the left and right inner sidewalls at the rear end. The fixing bolts (7) connected to the rear ends of the left and right sidewalls of the reciprocating sleeve (6) are slidably connected in the guide grooves (504). The protective sleeve (5) has a sliding hole (501) in the middle of the front sidewall. The sliding hole (501) has a limit groove (502) in the middle of the top of the sliding hole (501). The limit rod (11) is connected to the middle of the top of the limit groove (502). The bottom of the limit rod (11) is threaded to the fixed limit block (1101) and is stuck in the limit groove (502). The fixed limit block (1101) is slidably connected in the limit groove (603) at the top of the front sliding rod (601) of the reciprocating sleeve (6). The protective sleeve (5) has four rotating holes (503) in a rectangular array on the front outer sidewall. Each rotating hole (503) is rotatably connected to a magnetic limit block (10).

2. The oil stain cleaning device for mechanical equipment maintenance as described in claim 1, characterized in that: The rear end of the connecting rod (8) is provided with a threaded groove (801) connected to the threaded rod (602) at the front end of the reciprocating sleeve (6). Eight guide sliders (802) are evenly arranged on the annular inner wall of the front end of the connecting rod (8). A fixing block (901) is provided in the middle of the arc-shaped upper and lower inner walls of the fixed sleeve (9). The fixing block (901) is slidably connected in the limiting groove (603) at the top of the front slide rod (601) of the reciprocating sleeve (6). A connecting piece (902) is provided in the middle of the upper and lower outer walls at the rear end of the fixed sleeve (9). The connecting piece (902) is stuck on the rear side of the magnetically attached limiting block (10) that is rotatably connected to the front wall of the protective sleeve (5).

3. The oil stain cleaning device for mechanical equipment maintenance as described in claim 1, characterized in that: The angle limiting structure (16) consists of a pressure plate (1601), a guide groove (1602), an inner hole (1603), a support spring (1604), and a limiting engagement tooth (1605). The pressure plate (1601) is symmetrically provided with two circular holes that are slidably connected to the front end of the connecting rod (8). Eight guide grooves (1602) are provided at equal intervals on the outer sidewall of the pressure plate (1601). The guide grooves (1602) are slidably connected to the guide slider (802) on the annular inner wall of the front end of the connecting rod (8). An inner hole (1603) is provided in the opposite sidewall of the two pressure plates (1601). A guide rod (17) is slidably connected in the inner hole (1603). A support spring (1604) is provided between the two pressure plates (1601). A limiting engagement tooth (1605) is provided in the opposite sidewall of the two pressure plates (1601).

4. The oil stain cleaning device for mechanical equipment maintenance as described in claim 1, characterized in that: The connector (13) has a limiting toothed disc (1301) on the left and right inner walls at the rear end. The limiting toothed disc (1301) and the limiting teeth (1605) of the angle limiting structure (16) mesh with each other. The connector (13) has a spray head (1302) with three side openings in the bottom end face. The connector (13) has a fixing hook (1303) on the bottom rear side. The connector (13) has a connector and a liquid supply pipe (18) connected to the top rear side.

5. The oil stain cleaning device for mechanical equipment maintenance as described in claim 1, characterized in that: The connector (13) has a movable hook (15) rotatably connected to its front end. The movable hook (15) is located symmetrically to the fixed hook (1303). A torsion spring (1501) is sleeved on the pivot in the middle of the left and right side walls of the movable hook (15).

6. The oil stain cleaning device for mechanical equipment maintenance as described in claim 1, characterized in that: The bottom of the brush plate (14) is provided with bristles (1401) that are arc-shaped in the middle. The inner walls of the front and rear ends of the brush plate (14) are engaged with the fixed hook (1303) at the rear end of the bottom of the connector (13) and the movable hook (15) at the front end of the connector (13).

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