Marine atmosphere corrosion resistant protective device for hydraulic cylinder

Abstract

The invention relates to the field of hydraulic cylinders, in particular to a marine atmosphere corrosion resistant hydraulic cylinder protection device which comprises a telescopic rod, a cylinder body and the like. A telescopic rod is slidably connected into the cylinder body. The cylinder body and the telescopic rod are covered through cooperation of the protective cover, the heat dissipation cover, the rotating plate and the fixing disc, salt cannot be directly attached to the surfaces of the cylinder body and the telescopic rod, and it is prevented that salt is accumulated on the cylinder body and the telescopic rod to affect heat dissipation and be corroded; salt crystals on the surface of the protective cover can be cracked by stretching and compressing the protective cover, and the salt crystals attached to the protective cover fall off, so that workers do not need to regularly clean the protective cover, and the self-cleaning capability of the device is realized; by arranging the protruding parts on the protective cover, more wrinkles are formed in the compressed state of the protective cover, and therefore salt crystals can be separated from the protective cover more easily.

Description

Technical Field

[0001] The invention relates to the field of hydraulic cylinders, and in particular to a protective device for hydraulic cylinders that is resistant to marine atmospheric corrosion. Background Art

[0002] When the hydraulic cylinder is used in scenarios such as the seaside and offshore platforms, the salt in the sea breeze will adhere to the surface of the hydraulic cylinder to form salt crystals. As the hydraulic cylinder is used for a longer time, the salt crystals adhered to the surface of the hydraulic cylinder will gradually thicken, affecting the heat dissipation of the hydraulic cylinder when it continues to work. At the same time, the salt crystals adhered to the surface of the hydraulic cylinder will corrode the hydraulic cylinder, affecting the service life of the hydraulic cylinder. Although, an anti-corrosion coating is usually applied to the surface of the hydraulic cylinder to avoid erosion by the salt in the sea breeze, the surface of the hydraulic cylinder is eroded by salt for a long time, and the anti-corrosion coating will lose its effect, that is, the hydraulic cylinder coated with the anti-corrosion coating will still be corroded by salt. Therefore, it is usually necessary to manually clean the hydraulic cylinder frequently to ensure the service life of the hydraulic cylinder, but the number of hydraulic cylinders used at the seaside and offshore platforms is large, and manual cleaning one by one is troublesome and labor-intensive. Summary of the invention

[0003] In order to overcome the disadvantages that salt crystals will hinder the normal heat dissipation of the hydraulic cylinder and corrode the surface of the hydraulic cylinder, resulting in workers having to frequently clean the salt crystals, the present invention provides a protective device for a hydraulic cylinder that is resistant to marine atmospheric corrosion.

[0004] The technical implementation scheme of the present invention is: a protective device for a hydraulic cylinder resistant to marine atmospheric corrosion, comprising a telescopic rod and a cylinder body; the cylinder body is slidably connected with the telescopic rod; it also comprises a protective cover, a heat dissipation cover, a rotating plate, a fixed plate and a locking block; a protective cover is installed between the telescopic rod and the cylinder body to prevent salt from adhering to the telescopic rod and the cylinder body; the protective cover is made of elastic rubber; a heat dissipation cover for heat exchange is arranged on the cylinder body, the protective cover is detachably connected to the heat dissipation cover, and the surface of the heat dissipation cover is coated with a metallic silver coating; a rotating cover is rotatably connected to the protective cover The rotating plate is provided with a plurality of slots; a fixed plate is fixedly connected to the telescopic rod; a plurality of locking blocks are fixedly connected to the fixed plate for workers to maintain and observe the cylinder body; each locking block slides in an adjacent slot; the rotating plate is locked with the fixed plate through the locking blocks; the protective cover, the heat dissipation cover, the rotating plate and the fixed plate jointly form a first air cavity, and the cylinder body is located in the first air cavity; a plurality of connecting ports are provided on the side of the heat dissipation cover facing the protective cover, and the connecting ports are connected with the first air cavity; a second air cavity is provided in the heat dissipation cover, and the second air cavity is connected with all the connecting ports.

[0005] Optionally, the protective cover is provided with a plurality of protrusions for facilitating the detachment of salt crystals.

[0006] Optionally, a sliding portion is provided on the heat dissipation cover to prevent salt crystallization from interfering with heat dissipation.

[0007] Optionally, the protective cover is made of heat-insulating material.

[0008] Optionally, the sliding part slides on the side wall of the heat dissipation cover.

[0009] Optionally, each protrusion is made of rubber.

[0010] Optionally, a scraper is also included; a scraper is fixedly connected to the left side of the cylinder body to prevent oil and dirt from accumulating on the telescopic rod and the cylinder body; the telescopic rod passes through the scraper.

[0011] Optionally, the scraper is made of oil-absorbing material; the left side of the scraper is set as a collecting part; the right side of the scraper is set as a storage part, and the diameter of the storage part is larger than that of the collecting part.

[0012] Optionally, the scraper is snap-fitted to the cylinder body.

[0013] Optionally, cotton threads are also included; a plurality of cotton threads are fixedly connected to the scraper for facilitating rapid absorption and storage of hydraulic oil.

[0014] The beneficial effects are as follows: the present invention realizes that the cylinder body and the telescopic rod are covered by the protective cover, the heat dissipation cover, the rotating plate and the fixing plate, so that salt cannot directly adhere to the surface of the cylinder body and the telescopic rod, and the cylinder body and the telescopic rod are prevented from accumulating salt to affect heat dissipation and being corroded; By stretching and compressing the protective cover, the salt crystals on its surface can be cracked, and the salt crystals attached to the protective cover can fall off, thereby eliminating the need for workers to clean the protective cover regularly, thus achieving the self-cleaning ability of the device; By providing a convex portion on the protective cover, the protective cover forms more folds in a compressed state, thereby making it easier for salt crystals to separate from the protective cover; By adding a heat dissipation cover, the metal silver coating on the surface of the heat dissipation cover is used to exchange heat with the outside world. At the same time, the outside air cannot enter the protective cover and the heat dissipation cover, so that the salt in the air cannot corrode the cylinder body; The sliding part is stored inside the heat dissipation cover when not in use, so that salt cannot adhere to the sliding part. Even if salt adheres to the surface of the heat dissipation cover, it does not affect the heat dissipation of the device. The scraper removes the residual hydraulic oil on the surface of the cylinder body and prevents the hydraulic oil from dripping onto the protective cover to prevent the protective cover from being contaminated. The scraper that absorbs the hydraulic oil can also provide lubrication during the movement of the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the protective device for a hydraulic cylinder resistant to marine atmospheric corrosion of the present invention; Figure 2 It is a combined cross-sectional view of the protective cover and the heat dissipation cover of the present invention; Figure 3It is a schematic diagram of the combined three-dimensional structure of the protective cover, the heat dissipation cover and the cylinder body of the present invention; Figure 4 It is a schematic diagram of the combined three-dimensional structure of the rotating plate, the fixing plate and the locking block of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the scraper and the cotton thread of the present invention from a first viewing angle; Figure 6 This is a schematic diagram of the three-dimensional structure of the scraper and cotton thread of the present invention from a second viewing angle.

[0016] Markings in the accompanying drawings: 1-telescopic rod, 2-protective cover, 2001-protrusion, 2002-first air cavity, 3-heat dissipation cover, 3001-sliding part, 3002-connecting port, 3003-second air cavity, 4-cylinder body, 5-rotating plate, 5001-slot, 101-fixed plate, 102-locking block, 103-scraper, 10301-collecting part, 10302-storage part, 104-cotton thread. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0018] like Figure 1-Figure 4 As shown, a protective device for a hydraulic cylinder resistant to marine atmospheric corrosion comprises a telescopic rod 1 and a cylinder body 4; the telescopic rod 1 is slidably connected in the cylinder body 4; It also includes a protective cover 2, a heat dissipation cover 3, a rotating plate 5, a fixed disk 101 and a locking block 102; a protective cover 2 is installed between the telescopic rod 1 and the cylinder body 4; the protective cover 2 is made of elastic rubber; a heat dissipation cover 3 is arranged on the cylinder body 4, the protective cover 2 is bolted to the heat dissipation cover 3, and the surface of the heat dissipation cover 3 is coated with a metallic silver coating; a rotating plate 5 is rotatably connected to the protective cover 2; two card slots 5001 are provided on the rotating plate 5; a fixed disk 101 is fixedly connected to the telescopic rod 1; two locking blocks 102 are fixedly connected to the fixed disk 101; each locking block 102 is ... The blocks 102 all slide in the adjacent slots 5001; the rotating plate 5 is locked with the fixed plate 101 through the locking block 102; the protective cover 2, the heat dissipation cover 3, the rotating plate 5 and the fixed plate 101 together form a first air cavity 2002, and the cylinder body 4 is located in the first air cavity 2002; the heat dissipation cover 3 is provided with a plurality of connecting ports 3002 on the side facing the protective cover 2, and the connecting ports 3002 are connected with the first air cavity 2002; a second air cavity 3003 is opened in the heat dissipation cover 3, and the second air cavity 3003 is connected with all the connecting ports 3002.

[0019] The protective cover 2 is provided with a plurality of protrusions 2001 .

[0020] The heat dissipation cover 3 is provided with a sliding portion 3001 .

[0021] The protective cover 2 is made of heat-insulating material to prevent high temperature from the outside from invading the cylinder body 4, while ensuring the operating temperature of the cylinder body 4 at a low temperature.

[0022] The sliding part 3001 is slidably attached to the side wall of the heat dissipation cover 3 .

[0023] Each protrusion 2001 is made of rubber material to prevent the protrusion 2001 from damaging the protective cover 2, thereby extending the service life of the protective cover 2.

[0024] During use of the present invention, the protective cover 2, the heat dissipation cover 3, the rotating plate 5 and the fixed plate 101 cooperate to cover the cylinder body 4 and the telescopic rod 1, so that salt cannot directly adhere to the surface of the cylinder body 4 and the telescopic rod 1, and the cylinder body 4 and the telescopic rod 1 are prevented from accumulating salt and affecting heat dissipation and being corroded. At the same time, after the protective cover 2 is added, the long-term use process is prone to cause the crystallization of salt accumulated on the surface of the protective cover 2. Therefore, when the telescopic rod 1 is extended to the left, the telescopic rod 1 drives the fixed plate 101 to move to the left. It should be noted that: at this time, the fixed plate 101 is in a locked state with the rotating plate 5 through the locking block 102, and then in the process of the fixed plate 101 moving to the left, the fixed plate 101 drives the protective cover 2 to stretch to the left through the locking block 102 and the rotating plate 5, and the salt crystals on the surface of the protective cover 2 are cracked by stretching the protective cover 2. During the process of retracting the telescopic rod 1 to the right, the protective cover 2 is deformed back to the initial state and then gradually compressed, thereby squeezing the cracked salt crystals and causing the salt crystals attached to the protective cover 2 to fall off, thereby eliminating the need for workers to regularly clean the protective cover 2, thereby achieving the self-cleaning ability of the device. Furthermore, by providing a protrusion 2001 on the protective cover 2, the protective cover 2 forms more wrinkles in a compressed state, thereby making it easier for the salt crystals to separate from the protective cover 2. Finally, the worker can rotate the rotating plate 5 to loosen the locking block 102 from the slot 5001, and then separate the fixed disk 101 from the rotating plate 5. When the worker needs to maintain and observe the use status of the cylinder body 4 later, he only needs to pull the rotating plate 5 to move to the right to shrink the protective cover 2 and leak out of the cylinder body 4, thereby facilitating the worker's subsequent maintenance and observation of the cylinder body 4.

[0025] After the telescopic rod 1 and the cylinder body 4 are covered by the protective cover 2, in order to prevent the external high temperature from directly acting on the telescopic rod 1 and the cylinder body 4, the heat-insulating material of the protective cover 2 is used to insulate the external temperature, so as to ensure that the telescopic rod 1 and the cylinder body 4 are not affected by the high temperature during operation. At the same time, in cold climates, the protective cover 2 with the heat-insulating material can also lock the temperature generated when the telescopic rod 1 and the cylinder body 4 are working, so that the hydraulic oil in the cylinder body 4 does not become sticky due to the low temperature, and the telescopic rod 1 and the cylinder body 4 can run more smoothly; but due to the protective cover 2 made of the heat-insulating material, the heat emitted by the telescopic rod 1 and the cylinder body 4 will be isolated in the first air cavity 2002, so that the heat generated by the telescopic rod 1 and the cylinder body 4 cannot be directly dissipated into the air, and in order to prevent salt from affecting the normal heat dissipation of the device, it is necessary to isolate the outside air from entering the protective cover 2 to prevent the outside air from contacting the telescopic rod 1 and the cylinder body 4. The rod 1 is in direct contact with the cylinder body 4. Therefore, by adding a heat dissipation cover 3, the second air cavity 3003 is connected with the first air cavity 2002 through the connecting port 3002. Whenever the telescopic rod 1 compresses the protective cover 2, the gas in the first air cavity 2002 is compressed, so that the gas flows into the second air cavity 3003 through the connecting port 3002. The hot air in the first air cavity 2002 is replaced into the second air cavity 3003. At this time, the heat is exchanged with the outside by utilizing the high thermal conductivity of the metal silver coating on the surface of the heat dissipation cover 3. When the protective cover 2 is stretched, the gas in the second air cavity 3003 returns to the first air cavity 2002, thereby dissipating heat for the telescopic rod 1 and the cylinder body 4. Through this heat exchange method, under the premise of achieving heat dissipation, the outside air cannot enter the protective cover 2 and the heat dissipation cover 3, so that the salt in the air cannot corrode the cylinder body 4.

[0026] After the heat dissipation cover 3 is added, considering that salt also adheres to the surface of the heat dissipation cover 3, in order to prevent the heat dissipation effect of the heat dissipation cover 3 from being affected by the salt, when the protective cover 2 is compressed, the gas rushes to the second air cavity 3003. At this time, the protective cover 2 continues to be compressed, so that the gas in the first air cavity 2002 continues to be poured into the second air cavity 3003 filled with gas, and then the sliding part 3001 is pushed out to the left, so that the sliding part 3001 leaks out and directly contacts the outside world, and the sliding part 3001 is used to replace the heat. When the protective cover 2 is stretched, the gas flows out from the second air cavity 3003. The sliding part 3001 moves into the first air cavity 2002. At this time, the sliding part 3001 is retracted into the heat dissipation cover 3 under the action of air pressure. During the process of retracting the sliding part 3001, the sliding part 3001 contacts the side of the heat dissipation cover 3, and the side of the heat dissipation cover 3 is used to scrape off the salt crystals attached to the sliding part 3001. Then, when not in use, the sliding part 3001 is stored in the heat dissipation cover 3, so that the salt cannot adhere to the sliding part 3001. At the same time, no salt remains on the sliding part 3001 after use during the retraction process. Even if salt adheres to the surface of the heat dissipation cover 3, it does not affect the heat dissipation of the device.

[0027] It should be noted that a mounting opening may be provided on the heat dissipation cover 3 so that the pipeline of the external hydraulic pump connected to the cylinder body 4 may pass through the heat dissipation cover 3 and be connected to the cylinder body 4 . Example 2

[0028] On the basis of Example 1, Figure 5 and Figure 6 As shown, a scraper 103 is also included; the scraper 103 is fixedly connected to the left side of the cylinder body 4; and the telescopic rod 1 passes through the scraper 103.

[0029] The scraper 103 is made of oil-absorbing material; the left side of the scraper 103 is set as a collecting part 10301; the right side of the scraper 103 is set as a storage part 10302, and the diameter of the storage part 10302 is larger than that of the collecting part 10301.

[0030] The scraper 103 is detachably connected to the cylinder body 4 .

[0031] It also includes cotton threads 104 ; a plurality of cotton threads 104 are fixedly connected to the scraper 103 .

[0032] When the telescopic rod 1 slides back and forth in the cylinder body 4, it is considered that the hydraulic oil remaining on the surface of the telescopic rod 1 is scraped off by the left side of the cylinder body 4 when the telescopic rod 1 contracts, resulting in residual hydraulic oil on the left side of the cylinder body 4, and the residual hydraulic oil is easily contaminated by dust, which will cause the telescopic rod 1 to contact and rub with the contaminated hydraulic oil during telescopic work, thereby affecting the service life of the telescopic rod 1. At the same time, the contaminated hydraulic oil is also easily brought directly into the cylinder body 4 to contaminate the intact hydraulic oil. Therefore, the cylinder body 4 and the telescopic rod 1 are covered by the protective cover 2, the heat dissipation cover 3, the rotating plate 5 and the fixed plate 101, so that external dust cannot contact the hydraulic oil on the telescopic rod 1, thereby avoiding contamination of the hydraulic oil on the telescopic rod 1.

[0033] When the telescopic rod 1 is retracted, the hydraulic oil attached to the telescopic rod 1 is scraped off by the scraper 103, and the oil-absorbing material of the scraper 103 is used to make the collecting part 10301 absorb the hydraulic oil remaining on the telescopic rod 1, so as to prevent the scraped hydraulic oil from falling down and contaminating the protective cover 2 and making it inconvenient for subsequent collection and reuse. Furthermore, by arranging a cotton thread 104 on the scraper 103, when the hydraulic oil absorbed by the collecting part 10301 contacts the cotton thread 104, the hydraulic oil will be absorbed by the cotton thread 104 and guided to the storage part 10302, that is, the cotton thread 104 is used to absorb the hydraulic oil into the storage part 10302 of the scraper 103 more quickly, thereby ensuring the collection. The part 10301 absorbs the hydraulic oil remaining on the telescopic rod 1, so as to avoid the long time required for the hydraulic oil absorbed by the collecting part 10301 to diffuse to the storage part 10302. Furthermore, since the hydraulic oil stored in the scraper 103 is not polluted by dust, during the movement of the telescopic rod 1, the hydraulic oil absorbed by the collecting part 10301 can also be applied to the surface of the telescopic rod 1 to achieve a lubrication effect. When it is necessary to clean the hydraulic oil collected by the scraper 103 for reuse, the worker can remove the protective cover 2, take out the scraper 103, and then press out the pollution-free hydraulic oil stored in the scraper 103, collect it for reuse, so as to avoid waste of hydraulic oil.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion, comprising a telescopic rod (1) and a cylinder body (4); the telescopic rod (1) is slidably connected inside the cylinder body (4); the characteristics are: The invention also comprises a protective cover (2), a heat dissipation cover (3), a rotating plate (5), a fixed disk (101) and a locking block (102); a protective cover (2) is installed between the telescopic rod (1) and the cylinder body (4) to prevent salt from adhering to the telescopic rod (1) and the cylinder body (4); the protective cover (2) is made of elastic rubber; a heat dissipation cover (3) for heat exchange is arranged on the cylinder body (4); the protective cover (2) and the heat dissipation cover (3) are detachably connected, and the surface of the heat dissipation cover (3) is coated with a metallic silver coating; a rotating plate (5) is rotatably connected to the protective cover (2); a plurality of slots (5001) are provided on the rotating plate (5); a fixed disk (101) is fixedly connected to the telescopic rod (1); a A plurality of locking blocks (102); each locking block (102) slides in an adjacent slot (5001); the rotating plate (5) is mutually locked with the fixed plate (101) through the locking blocks (102); the protective cover (2), the heat dissipation cover (3), the rotating plate (5) and the fixed plate (101) together form a first air cavity (2002), and the cylinder body (4) is located in the first air cavity (2002); a plurality of connecting ports (3002) are provided on a side of the heat dissipation cover (3) facing the protective cover (2), and the connecting ports (3002) are connected to the first air cavity (2002); a second air cavity (3003) is provided in the heat dissipation cover (3), and the second air cavity (3003) is connected to all the connecting ports (3002).

2. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 1, characterized in that: The protective cover (2) is provided with a plurality of protrusions (2001) for facilitating the separation of salt crystals.

3. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 1, characterized in that: The heat dissipation cover (3) is provided with a sliding portion (3001) for preventing salt crystallization from interfering with heat dissipation.

4. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 1, characterized in that: The protective cover (2) is made of heat-insulating material.

5. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 3, characterized in that: The sliding portion (3001) slides on the side wall of the heat dissipation cover (3).

6. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 2, characterized in that: Each protrusion (2001) is made of rubber.

7. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 1, characterized in that: It also includes a scraper (103); the scraper (103) is fixedly connected to the left side of the cylinder body (4) to prevent oil and dirt from accumulating on the telescopic rod (1) and the cylinder body (4); the telescopic rod (1) passes through the scraper (103).

8. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 7, characterized in that: The scraper (103) is made of an oil-absorbing material; the left side of the scraper (103) is provided as a collecting portion (10301); the right side of the scraper (103) is provided as a storage portion (10302), and the storage portion (10302) has a larger diameter than the collecting portion (10301).

9. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 8, characterized in that: The scraper (103) is detachably connected to the cylinder body (4).

10. A protective device for a hydraulic cylinder resistant to marine atmospheric corrosion according to claim 9, characterized in that: It also includes cotton threads (104); a plurality of cotton threads (104) are fixedly connected to the scraper (103) for facilitating rapid absorption and storage of hydraulic oil.

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