Oil stain self-cleaning device for cylinder head of hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinder cleaning, in particular to a hydraulic oil cylinder head oil stain self-cleaning device which comprises two shells and two rotating cores, the two shells and the two rotating cores are semicircular, positioning grooves are formed in the inner walls of the two shells, the two rotating cores are rotationally connected in the positioning grooves, and the two rotating cores are arranged in the positioning grooves. The two ends of the two shells are fixedly connected with connecting plates, and one sides of the two shells are fixedly connected with a plurality of positioning plates. The self-cleaning device has the advantages that after the self-cleaning device is installed on the cylinder head of the hydraulic oil cylinder, in the process that the piston rod of the hydraulic oil cylinder shrinks to the cylinder barrel, the air pump conveys high-pressure air into the U-shaped groove, so that the blade plate drives the rotating core to rotate in the shell, and the scraping plate scrapes stains on the surface of the piston rod; therefore, the possibility that the sealing assembly in the cylinder head is abraded by stains is reduced, the sealing performance of the sealing assembly in the cylinder head is ensured, the service life is long, and the problems that the sealing assembly in the cylinder head is difficult to maintain and construct and high in cost are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder cleaning, and particularly relates to an automatic cleaning device for the oil stain on the cylinder head of a hydraulic cylinder. Background Art

[0002] The gates of a ship lock often rely on hydraulic cylinders to control opening and closing. The cylinder head of the hydraulic cylinder, that is, the end of the piston rod for connecting the actuator, will extend out of or retract into the cylinder barrel as the piston rod extends and retracts. When the piston rod of the hydraulic cylinder retracts into the cylinder barrel, the surface of the piston rod will contact the hydraulic oil in the cylinder barrel. Therefore, when the cylinder head extends out of the cylinder barrel, although the sealing components in the cylinder barrel can scrape off most of the hydraulic oil on the surface of the cylinder head, there is still a thin oil film attached to the surface of the cylinder head. The oil film is difficult to observe with the naked eye, but can be felt by touching with the hand. At the same time, the oil film is sticky, so the surface of the cylinder head with the oil film is prone to being stained with dirt. As the oil film thickens, the friction force on the sealing components in the cylinder barrel increases when the cylinder head extends and retracts, causing wear of the sealing components.

[0003] For the hydraulic cylinders used in ship lock gates, due to their large volume, when the surface of the cylinder head is attached with an oil film and stained with dust, the problems of long maintenance cycle, high maintenance cost, and great maintenance difficulty highlighted by the aggravated wear of the sealing components in the cylinder barrel are more significant, and it will also affect the normal opening and closing of the ship lock gate and the realization of the ship lock control water level and lockage function. Content of the Utility Model

[0004] The purpose of the utility model aims to solve at least one of the technical defects described in the background art.

[0005] To this end, an object of the utility model is to propose an automatic cleaning device for the oil stain on the cylinder head of a hydraulic cylinder, aiming to solve the problem that in the prior art, when the hydraulic cylinder used in a ship lock gate is in use, the sealing components in the cylinder head are easily worn by the stains on the surface of the piston rod, resulting in a decline in sealing performance, difficult later maintenance, and high cost.

[0006] To achieve the above object, an embodiment of one aspect of the utility model provides an automatic cleaning device for the oil stain on the cylinder head of a hydraulic cylinder, including two outer shells and two rotating cores. Both the two outer shells and the two rotating cores are semi-circular. The inner walls of the two outer shells are provided with positioning grooves, and the two rotating cores are rotatably connected in the positioning grooves. Both ends of the two outer shells are fixedly connected with connecting plates. A plurality of positioning plates are fixedly connected to one side of the two outer shells. A U-shaped groove is fixedly connected to one side of the two outer shells. A plurality of blade plates are fixedly connected to one side of the two rotating cores. The blade plates are inserted into the interior of the U-shaped groove. An air inlet pipe and an exhaust pipe are arranged on one of the U-shaped grooves. A plurality of scraping plates are arranged on the inner wall of the rotating core.

[0007] Preferably, according to any of the above solutions, a plurality of receiving grooves are formed in the inner wall of the positioning groove. A roller shaft is rotatably connected inside the receiving groove. The outer surface of the rotating core abuts against the roller shaft, and the rotating core and the roller shaft are in rolling friction, reducing the frictional force and thus prolonging the service life.

[0008] Preferably, according to the above solution, grooves communicating with the receiving grooves are formed on one side of the two outer shells away from the positioning plate. Two positioning rings are inserted into the grooves. Positioning holes are formed on one side of the positioning rings and one side of the receiving grooves. The two ends of the roller shaft are fixedly connected with rotating shafts, and the roller shaft is rotatably connected in the positioning holes through the rotating shafts at both ends. A first clamping groove is formed in the inner wall of the groove, and a first clamping spring is clamped in the first clamping groove. During production, it is convenient for the assembly and positioning of the roller shaft and the replacement of the damaged roller shaft in the later stage.

[0009] Preferably, according to any of the above solutions, a sliding groove is formed in the inner wall of the rotating core. One side of the scraping plate is fixedly connected with a sliding block, and the sliding block is slidably connected in the sliding groove. Two retaining rings are inserted into the inner wall of the positioning ring. A second clamping groove is formed in the inner wall of the positioning ring, and a second clamping spring is clamped in the second clamping groove. It is convenient to replace the damaged scraping plate in the later stage.

[0010] Compared with the prior art, the advantages and beneficial effects of the present utility model are as follows:

[0011] 1. After installing the self-cleaning device on the cylinder head of the hydraulic cylinder, when the piston rod of the hydraulic cylinder retracts into the cylinder barrel, the air pump conveys high-pressure gas into the U-shaped groove, causing the leaf plate to drive the rotating core to rotate in the outer shell, so that the scraping plate scrapes the stains on the surface of the piston rod, thereby reducing the possibility of the stains wearing the sealing components in the cylinder head, ensuring the sealing performance of the sealing components in the cylinder head, and having a long service life. Thus, the problems of difficult maintenance construction and high cost of the sealing components in the cylinder head are solved.

[0012] 2. For the existing ship locks, there is no need to disassemble the hydraulic cylinders on the gates, and there is no need to disassemble or replace the existing hydraulic cylinders, achieving the purpose of being easy to install and easy to promote.

[0013] 3. During the rotation of the rotating core, the roller shaft rotates accordingly, with rolling friction, so the frictional force is small, making the rotating core easy to rotate and having little wear. Therefore, the service life of the rotating core can be prolonged.

[0014] 4. During assembly, after installing the roller shaft in the receiving groove, then put the two positioning rings into the groove and limit the positioning rings through the first clamping spring. The structure is simple and convenient for assembly during production.

[0015] 5. The scraper is slidably connected to the chute on the inner wall of the rotating core through a slider. Therefore, when the scraper is severely worn and the scraping effect is reduced, the second snap ring can be removed, and then the retaining ring can be removed, and the scraper can be pulled out of the chute for replacement, thus achieving the purpose of facilitating the replacement of the scraper.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic structural diagram according to the present invention.

[0019] Figure 2 is a schematic structural diagram of the disassembled structure according to the present invention.

[0020] Figure 3 is a schematic structural diagram of two outer shells according to the present invention.

[0021] Figure 4 is a schematic structural diagram of two rotating cores according to the present invention.

[0022] Figure 5 is a schematic structural diagram of two positioning rings according to the present invention.

[0023] Figure 6 is a schematic structural diagram of installing the present invention on the cylinder head.

[0024] Wherein: 1. Outer shell, 11. Positioning groove, 12. Connecting plate, 13. Positioning plate, 14. U-shaped groove, 15. Air inlet pipe, 16. Exhaust pipe, 2. Rotating core, 21. Blade, 22. Chute, 3. Scraper, 31. Slider, 4. Accommodating groove, 41. Roller, 411. Rotating shaft, 42. Groove, 43. Positioning ring, 44. Positioning hole, 45. First clamping groove, 46. First snap ring, 5. Retaining ring, 51. Second clamping groove, 52. Second snap ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0026] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] The present utility model provides a hydraulic cylinder head oil stain self-cleaning device.

[0028] Embodiment 1:

[0029] As Figure 1 、 Figure 3 and Figure 4 shown, it includes two outer shells 1 and two rotating cores 2. The two outer shells 1 and the two rotating cores 2 are both semi-circular. Positioning grooves 11 are provided on the inner walls of the two outer shells 1. The two rotating cores 2 are rotatably connected in the positioning grooves 11. Connecting plates 12 are fixedly connected to both ends of the two outer shells 1. As Figure 3 shown, through holes are provided on the connecting plates 12. Bolts can be used to pass through the through holes, and then nuts are connected to the bolts, so that the two outer shells 1 can be assembled into a circular housing. A plurality of positioning plates 13 are fixedly connected to one side of the two outer shells 1. Hole grooves are provided on the positioning plates 13. During use, as Figure 6 shown, the hole grooves on the positioning plates 13 are sleeved on the surfaces of the bolts on the hydraulic cylinder head, and then the outer shell 1 can be fixed on the hydraulic cylinder head. A U-shaped groove 14 is fixedly connected to one side of the two outer shells 1. A plurality of blade plates 21 are fixedly connected to one side of the two rotating cores 2. The blade plates 21 are inserted into the inside of the U-shaped groove 14. One side of the opening of the U-shaped groove 14 abuts against one side of the rotating core 2. The rotating core 2 is used to block the opening side of the U-shaped groove 14. An air inlet pipe 15 and an exhaust pipe 16 are provided on one of the U-shaped grooves 14. A high-pressure hose is connected to the air inlet pipe 15, and the other end of the high-pressure hose is connected to an air pump. High-pressure gas is conveyed into the U-shaped groove 14 through the high-pressure hose and the air inlet pipe 15. During the flow of the gas, the blade plates 21 can be pushed, so that the rotating core 2 rotates. A plurality of scraping plates 3 are provided on the inner wall of the rotating core 2. The scraping plates 3 are in contact with the surface of the piston rod of the hydraulic cylinder. Therefore, when the rotating core 2 rotates, the scraping plates 3 can scrape the stains on the surface of the piston rod.

[0030] Embodiment 2:

[0031] As Figures 2 - 5As shown, on the basis of the first embodiment, a plurality of receiving grooves 4 are opened on the inner wall of the positioning groove 11, and a roller 41 is rotatably connected inside the receiving groove 4. The outer surface of the rotating core 2 is in contact with the roller 41, and the roller 41 supports the rotating core 2. When the rotating core 2 rotates, the roller 41 follows the rotation, and rolling friction is generated, so that the friction force is small, so that the rotating core 2 is easy to rotate, and the wear is small, thereby extending the service life of the rotating core 2.

[0032] Specifically, a groove 42 connected to the accommodating groove 4 is formed on one side of the two shells 1 away from the positioning plate 13, and two positioning rings 43 are inserted inside the groove 42. The two positioning rings 43 can form a circle, and a positioning hole 44 is formed on one side of the positioning ring 43 and one side of the accommodating groove 4. The two ends of the roller shaft 41 are fixedly connected with a rotating shaft 411, and the roller shaft 41 is rotatably connected in the positioning hole 44 through the rotating shafts 411 at both ends. A first clamping groove 45 is formed on the inner wall of the groove 42, and a first retaining spring 46 is clamped inside the first clamping groove 45. The first retaining spring 46 blocks the positioning ring 43 so that the positioning ring 43 will not detach from the groove 42. The structural design is simple and it is convenient to assemble the roller shaft 41 during production.

[0033] Embodiment three:

[0034] like Figures 2 - 5 As shown, on the basis of Example 2, a slide groove 22 is provided on the inner wall of the rotating core 2, and a slider 31 is fixedly connected to one side of the scraper 3. The slider 31 is slidably connected in the slide groove 22. The sliding connection method is convenient for replacing the scraper 3 that is severely worn. Two retaining rings 5 ​​are inserted into the inner wall of the positioning ring 43. The retaining ring 5 blocks the opening on one side of the slide groove 22 to avoid the problem of the slider 31 slipping out of the slide groove 22 during use. A second clamping groove 51 is provided on the inner wall of the positioning ring 43. A second retaining spring 52 is clamped inside the second clamping groove 51. The second retaining spring 52 blocks the retaining ring 5 to avoid the problem of the retaining ring 5 being separated from the positioning ring 43.

[0035] The working principle of the utility model is as follows: when in use, Figure 6As shown, remove the bolts on the cylinder head of the hydraulic cylinder, slip the housing 1 over the surface of the piston rod of the hydraulic cylinder, and align the holes and slots on the positioning plate 13 with the screw holes on the cylinder head. Then, pass the bolts through the holes and slots on the positioning plate 13 and thread them into the screw holes on the cylinder head to clamp the positioning plate 13 and fix the housing 1 to the cylinder head of the hydraulic cylinder. At this time, the rotating core 2 is sleeved on the outer surface of the piston rod of the hydraulic cylinder, and the scraper 3 inside the rotating core 2 abuts against the surface of the piston rod. The inlet pipe 15 is connected to a high-pressure hose, and the high-pressure hose is then connected to an air pump. When the piston rod of the hydraulic cylinder retracts into the cylinder barrel, the air pump delivers high-pressure gas into the U-shaped groove 14, causing the gas to push the vane 21, thereby driving the rotating core 2 to rotate inside the housing 1, enabling the scraper 3 to scrape the stains on the surface of the piston rod, thus reducing the possibility of the stains wearing the sealing components inside the cylinder head and extending the service life of the sealing components inside the cylinder head of the hydraulic cylinder.

[0036] Compared with the prior art, the present utility model has the following beneficial effects over the prior art:

[0037] 1. After installing this self-cleaning device on the cylinder head of the hydraulic cylinder, the inlet pipe 15 is connected to a high-pressure hose, and the high-pressure hose is then connected to an air pump. During the process of the piston rod of the hydraulic cylinder retracting into the cylinder barrel, the air pump delivers high-pressure gas into the U-shaped groove 14, causing the gas to push the vane 21, thereby driving the rotating core 2 to rotate inside the housing 1, enabling the scraper 3 to scrape the stains on the surface of the piston rod, thus reducing the possibility of the stains wearing the sealing components inside the cylinder head, ensuring the sealing performance of the sealing components inside the cylinder head and having a long service life, thereby solving the problems of difficult maintenance construction and high cost of the sealing components inside the cylinder head.

[0038] 2. For the existing ship locks, only need to remove a few bolts on the cylinder head of the hydraulic cylinder on the gate, then slip a housing 1 over the surface of the piston rod of the hydraulic cylinder, and align the holes and slots on the positioning plate 13 with the screw holes on the cylinder head. Then, pass the bolts through the holes and slots on the positioning plate 13 and thread them into the screw holes on the cylinder head to clamp the positioning plate 13, thereby fixing a housing 1, and then fix another housing 1 in the same way. There is no need to disassemble the hydraulic cylinder on the gate and no need to disassemble or replace the existing hydraulic cylinder, thus achieving the purpose of being easy to install and easy to promote.

[0039] 3. By providing the roller shaft 41 to support the rotating core 2, during the rotation of the rotating core 2, the roller shaft 41 rotates along with it, with rolling friction, so the friction force is small, making it easy for the rotating core 2 to rotate and having little wear, thus the service life of the rotating core 2 can be extended.

[0040] 4. During assembly, after installing the roller shaft 41 in the receiving groove 4, then place two positioning rings 43 into the groove 42 and limit the positioning rings 43 with the first circlip 46. The structure is simple and convenient for assembly during production.

[0041] 5. The scraper 3 is slidably connected to the inner wall of the rotating core 2 through the slider 31. Therefore, when the scraper 3 is severely worn and the scraping effect is reduced, the second retaining ring 52 can be removed, and then the retaining ring 5 can be removed. After that, the scraper 3 can be pulled out from the chute 22 for replacement, thus achieving the purpose of facilitating the replacement of the scraper 3.

Claims

1. A hydraulic cylinder head oil self-cleaning device, comprising two housings (1) and two rotating cores (2), characterized in that: The two shells (1) and the two rotating cores (2) are both semicircular, the inner walls of the two shells (1) are provided with positioning grooves (11), the two rotating cores (2) are rotatably connected in the positioning grooves (11), both ends of the two shells (1) are fixedly connected with connecting plates (12), one side of the two shells (1) is fixedly connected with a plurality of positioning plates (13), one side of the two shells (1) is fixedly connected with a U-shaped groove (14), one side of the two rotating cores (2) is fixedly connected with a plurality of blades (21), the blades (21) are plugged into the inside of the U-shaped groove (14), one of the U-shaped grooves (14) is provided with an air intake pipe (15) and an exhaust pipe (16), and the inner wall of the rotating core (2) is provided with a plurality of scrapers (3).

2. The hydraulic cylinder head oil self-cleaning device according to claim 1, characterized in that: The inner wall of the positioning groove (11) is provided with a plurality of accommodating grooves (4), the interior of the accommodating groove (4) is rotatably connected to a roller shaft (41), and the outer surface of the rotating core (2) is in contact with the roller shaft (41).

3. The hydraulic cylinder head oil self-cleaning device according to claim 2, characterized in that: A groove (42) communicating with the receiving groove (4) is formed on one side of the two shells (1) away from the positioning plate (13); two positioning rings (43) are inserted into the groove (42); a positioning hole (44) is formed on one side of the positioning ring (43) and one side of the receiving groove (4); rotating shafts (411) are fixedly connected at both ends of the roller shaft (41); and the roller shaft (41) is rotatably connected in the positioning hole (44) via the rotating shafts (411) at both ends.

4. The hydraulic cylinder head oil self-cleaning device according to claim 3 is characterized in that: The inner wall of the groove (42) is provided with a first clamping groove (45), and the interior of the first clamping groove (45) is clamped with a first clamping spring (46).

5. The hydraulic cylinder head oil self-cleaning device according to claim 3 is characterized in that: The inner wall of the rotating core (2) is provided with a sliding groove (22), one side of the scraper (3) is fixedly connected with a sliding block (31), and the sliding block (31) is slidably connected in the sliding groove (22).

6. The hydraulic cylinder head oil self-cleaning device according to claim 5, characterized in that: Two retaining rings (5) are inserted into the inner wall of the positioning ring (43), a second clamping groove (51) is formed on the inner wall of the positioning ring (43), and a second clamping spring (52) is clamped inside the second clamping groove (51).

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