Corrosion-resistant and wear-resistant grab bucket oil cylinder

Abstract

The utility model discloses a corrosion-resistant and wear-resistant grab bucket oil cylinder, and particularly relates to the technical field of grab bucket oil cylinders, the corrosion-resistant and wear-resistant grab bucket oil cylinder comprises a cylinder body, a piston rod and a protection assembly, the piston rod is arranged in an inner cavity of the cylinder body, a cylinder cover is arranged at the upper end of the cylinder body, and the protection assembly is arranged at the upper end of the cylinder cover; lubricating oil can be continuously provided for the exposed surface of the metal piston rod through the oil absorption sponge of the simulated protection assembly, a protective film is formed, external moisture and saline water are isolated, the occurrence rate of oxidation reaction is reduced, corrosion is effectively avoided, corrosion of the metal surface can be effectively prevented in the dry and severe environment, and the service life of the piston rod is prolonged. Meanwhile, friction between metal surfaces is reduced, so that abrasion is reduced, the exposed surface of the piston rod can be prevented from being frozen or dewed at low temperature in a humid or cold environment through a heating ring of the protection assembly, the heating ring can provide continuous heat, the temperature of lubricating oil is increased, the viscosity of the lubricating oil is reduced, and the service life of the lubricating oil is prolonged. The flowability of the lubricating oil is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of grab bucket oil cylinders, and more specifically, to a corrosion-resistant and wear-resistant grab bucket oil cylinder. Background Art

[0002] The hydraulic cylinder has a simple structure and reliable operation. In the reciprocating motion, there is no transmission gap, so the movement is smooth. It is widely used in various mechanical hydraulic systems.

[0003] After searching, the existing patent (publication number: CN218760710U) discloses a variable speed grab bucket cylinder, including a cylinder barrel, a piston and a piston rod arranged in the cylinder barrel, a front chamber oil port and a rear chamber oil port arranged on the cylinder barrel, a front chamber oil circuit connected to the front chamber oil port, a rear chamber oil circuit connected to the rear chamber oil port, and a one-way valve connected to the front chamber oil circuit. An oil chamber is provided in the cylinder barrel, and the piston divides the oil chamber into a rod area and a rodless area. The front chamber oil circuit is connected to the rod area, and the rear chamber oil circuit is connected to the rodless area; an electromagnetic valve is provided on the front chamber oil port, and the oil outlet of the one-way valve is connected to the rear chamber oil circuit. The front chamber oil circuit, the one-way valve, and the rear chamber oil circuit form a passage, and the oil in the rod chamber is introduced into the rodless chamber through the passage. The utility model can speed up the speed of the piston moving to the rod chamber, speed up the forward extension speed of the grab bucket, and improve the grabbing efficiency of the grab bucket. In the process of realizing the utility model, the inventor found that the existing technology has the following problems:

[0004] When existing grab bucket hydraulic cylinders are exposed to high humidity, salt water, or chemicals, the exposed metal parts of the piston will corrode, affecting its overall performance and safety. The higher the corrosion risk, the lower the service life and reliability of the cylinder. Corrosion can also cause wear between the cylinder piston and cylinder barrel, reducing working efficiency and even causing cylinder failure. In extremely high or low temperatures, the viscosity of the hydraulic oil will change, affecting the cylinder's response speed and power output, resulting in impacts on the use of the grab bucket cylinder.

[0005] Therefore, in response to the above problems, a corrosion-resistant and wear-resistant grab bucket cylinder is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a corrosion-resistant and wear-resistant grab bucket cylinder to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the utility model provides the following technical solution: a corrosion-resistant and wear-resistant grab bucket cylinder, comprising a cylinder body, a piston rod and a protective assembly, wherein the piston rod is arranged in the inner cavity of the cylinder body, a cylinder cover is arranged at the upper end of the cylinder body, and the protective assembly is arranged at the upper end of the cylinder cover;

[0008] The protective assembly includes a fixing frame, which is respectively arranged on both sides of the upper end of the cylinder head. A fixing ring is provided on one side of the opposite surfaces of the two groups of fixing frames. Four groups of fixing rings are provided, and the opposite surfaces of two groups of the fixing rings are installed with oil-absorbing sponges, and the opposite surfaces of the other two groups of the fixing rings are installed with heating rings. Bolts are installed at the lower end of the fixing frame.

[0009] Preferably, a dust removal ring is provided on the inner surface of the cylinder head, a main seal is provided below the dust removal ring, a buffer ring is sleeved on the lower end of the piston rod, a secondary seal is provided on the lower end of the buffer ring, a threaded head is provided on the lower end of the secondary seal, and a nut is sleeved on the outer surface of the threaded head.

[0010] Preferably, an oil storage tank is installed on the left side of the cylinder body, and an oil extraction pipe is provided in the inner cavity of the oil storage tank, and a micro oil pump is provided above the oil storage tank, and an oil delivery pipe is provided at the output end of the micro oil pump.

[0011] Preferably, the two groups of oil-absorbing sponges and the two groups of heating rings are combined into a circular ring structure, the two groups of oil-absorbing sponges abut against the outer surface of the upper end of the piston rod, and the diameter between the two groups of heating rings is larger than the diameter of the piston rod.

[0012] Preferably, threaded holes are provided on both sides of the upper end of the cylinder body, the bolts are threadedly connected to the threaded holes, and the positions of the two groups of threaded holes are mirror-symmetrical.

[0013] Preferably, an oil inlet hole is provided below one group of the threaded holes, and an oil outlet hole is provided on the right side of the lower end of the cylinder body.

[0014] The technical effects and advantages of this utility model are:

[0015] 1. Compared with the existing technology, the corrosion-resistant and wear-resistant grab bucket cylinder can continuously provide lubricating oil to the exposed metal piston rod surface through the oil-absorbing sponge of the imitation protective component, forming a protective film to isolate external moisture and salt water, reduce the incidence of oxidation reaction, and thus effectively avoid corrosion. It can effectively prevent corrosion of metal surfaces in dry and harsh environments, and also reduce friction between metal surfaces, thereby reducing wear.

[0016] 2. Compared with the existing technology, the corrosion-resistant and wear-resistant grab bucket cylinder can provide continuous heat in humid or cold environments through the heating ring of the protective component, preventing the exposed surface of the piston rod from freezing or condensing at low temperatures, reducing corrosion and wear caused by moisture, and increasing the temperature of the lubricating oil, thereby reducing its viscosity and enhancing the fluidity of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the front cross-section structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the protective component of the utility model.

[0019] Figure 3 For this utility model Figure 1 Schematic diagram of the locally enlarged structure at point A in the figure.

[0020] Figure 4 This is a schematic diagram of the front cross-section structure of the oil storage tank of the present utility model.

[0021] The accompanying drawings are marked as follows: 1. Cylinder body; 2. Piston rod; 3. Cylinder head; 4. Dust removal ring; 5. Main seal; 6. Buffer ring; 7. Secondary seal; 8. Threaded head; 9. Nut; 10. Protective assembly; 1001. Fixing bracket; 1002. Fixing ring; 1003. Oil-absorbing sponge; 1004. Heating ring; 1005. Bolt; 11. Micro oil pump; 12. Oil pipeline; 13. Oil storage tank; 14. Oil extraction pipe; 15. Oil inlet hole; 16. Oil outlet hole; 17. Threaded hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] As attached Figures 1 to 4 The corrosion-resistant and wear-resistant grab bucket cylinder shown in the figure includes a cylinder body 1, a piston rod 2 and a protective assembly 10. The piston rod 2 is arranged in the inner cavity of the cylinder body 1, a cylinder cover 3 is arranged at the upper end of the cylinder body 1, and the protective assembly 10 is arranged at the upper end of the cylinder cover 3;

[0025] The protective assembly 10 includes a fixing frame 1001, which is respectively arranged on both sides of the upper end of the cylinder head 3. A fixing ring 1002 is provided on one side of the opposite surfaces of the two groups of fixing frames 1001. There are four groups of fixing rings 1002. The opposite surfaces of two groups of fixing rings 1002 are installed with oil-absorbing sponges 1003, and the opposite surfaces of the other two groups of fixing rings 1002 are installed with heating rings 1004. The lower end of the fixing frame 1001 is installed with a bolt 1005.

[0026] Among them: when the grab cylinder starts to work and the piston rod 2 retracts and contracts in the cylinder body 1, the protective component 10 at the upper end of the cylinder cover 3 protects the surface of the piston rod 2 exposed to the environment, and the two sets of heating rings 1004 in the two sets of fixing rings 1002 continuously apply lubricating oil to the outer surface of the piston rod 2, thereby forming an effective anti-corrosion coating, which can effectively block the erosion of moisture and chemicals, and improve the service life of the piston rod 2. By reducing corrosion and wear, the oil-absorbing sponge helps to maintain the sealing performance of the grab cylinder, and the two sets of heating rings 1004 heat the outer surface of the piston rod 2. In a humid or cold environment, the heating ring 1004 can provide continuous heat to prevent moisture on the surface of the piston rod 2 from freezing or condensing at low temperatures. When disassembly is required, the two sets of fixing frames only need to be disassembled by bolts 1005, which is convenient for maintenance.

[0027] Example 2

[0028] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 4 As shown, see the following description for details:

[0029] As a preferred embodiment, a dust removal ring 4 is provided on the inner surface of the cylinder head 3, a main seal 5 is provided below the dust removal ring 4, a buffer ring 6 is sleeved on the lower end of the piston rod 2, a secondary seal 7 is provided on the lower end of the buffer ring 6, a threaded head 8 is provided at the lower end of the secondary seal 7, a nut 9 is sleeved on the outer surface of the threaded head 8; furthermore, the dust removal ring 4 prevents pollutants from entering the interior of the cylinder body, thereby improving the cleanliness of the hydraulic oil. The double sealing design of the main seal 5 and the secondary seal 7 improves the sealing performance of the piston rod 2 and the cylinder body 1, effectively prevents leakage of hydraulic oil, and ensures the efficient operation of the hydraulic system. The buffer ring 6 can provide additional buffering effect, reduce the impact force of the piston rod 2 during movement, and protect the hydraulic cylinder and other components from excessive impact or vibration. The tight connection between the threaded head 8 and the nut 9 prevents the parts on the surface of the hydraulic cylinder from loosening during operation.

[0030] As a preferred embodiment, an oil storage tank 13 is installed on the left side of the cylinder body 1, and an oil extraction pipe 14 is provided in the inner cavity of the oil storage tank 13, and a micro oil pump 11 is provided above the oil storage tank 13, and an oil delivery pipe 12 is provided at the output end of the micro oil pump 11; further, the oil storage tank 13 stores lubricating oil, and the oil extraction pipe 14 is connected to the micro oil pump 11, so as to facilitate the micro oil pump 11 to extract the lubricating oil from the oil storage tank 13 and send it into the oil-absorbing sponge 1003 through the oil delivery pipe 12 at the output end.

[0031] As a preferred embodiment, the two groups of oil-absorbing sponges 1003 and the two groups of heating rings 1004 are combined into a circular ring structure, the two groups of oil-absorbing sponges 1003 abut against the outer surface of the upper end of the piston rod 2, and the diameter between the two groups of heating rings 1004 is larger than the diameter of the piston rod 2; further, the oil-absorbing sponges 1003 abut against the outer surface of the piston rod 2, thereby continuously coating the piston rod 2 with lubricating oil. Since the heating ring 1004 is larger than the piston rod 2, it will not abut against the surface of the piston rod 2 to affect its use, and provides a gentle heating effect.

[0032] As a preferred embodiment, threaded holes 17 are provided on both sides of the upper end of the cylinder body 1, and the bolts 1005 are threadedly connected to the threaded holes 17, and the positions of the two groups of threaded holes 17 are mirror-symmetrical; furthermore, the two groups of threaded holes 17 respectively provide installation positions for the bolts 1005, and the two groups of bolts 1005 are connected to the threaded holes 17, thereby installing the fixing frame 1001 on the upper end of the cylinder body 1.

[0033] As a preferred embodiment, an oil inlet hole 15 is opened below one group of threaded holes 17, and an oil outlet hole 16 is opened on the right side of the lower end of the cylinder body 1; further, the hydraulic oil enters the cylinder through the oil inlet hole 15 and is discharged through the oil outlet hole 16. By controlling the inflow and outflow of oil, the telescopic movement of the piston rod 2 can be realized.

[0034] The working process of the utility model is as follows: first, when the grab cylinder starts working, the hydraulic oil enters the cylinder through the oil inlet hole 15 and is discharged through the oil outlet hole 16. By controlling the inflow and outflow of oil, the expansion and contraction of the piston rod 2 is controlled. The double sealing design of the main seal 5 and the secondary seal 7 improves the sealing performance of the piston rod 2 and the cylinder body 1, effectively preventing the leakage of hydraulic oil and ensuring the efficient operation of the hydraulic system. The buffer ring 6 reduces the impact force of the piston rod 2 during the movement. The threaded head 8 is tightly connected to the nut 9. The dust removal ring 4 prevents pollutants from entering the interior of the cylinder body 1, thereby improving the cleanliness of the hydraulic oil. After the piston rod 2 passes through the cylinder head 3, it expands and contracts in the cylinder body 1.

[0035] The oil tank 13 stores lubricating oil, and the oil extraction pipe 14 is connected to the micro oil pump 11, so that the micro oil pump 11 can extract the lubricating oil from the oil tank 13 and send it into the oil-absorbing sponge 1003 through the oil delivery pipe 12 at the output end. The two groups of oil-absorbing sponges 1003 in the two groups of fixing rings 1002 continuously apply the lubricating oil to the outer surface of the piston rod 2, and can be evenly coated on its surface through the expansion and contraction of the piston rod 2, thereby forming an effective anti-corrosion coating. The bolts 1005 engage with the threaded holes 17, thereby installing the two groups of fixing frames 1001 on the upper end of the cylinder body 1, and the two groups of heating rings 1004 heat the outer surface of the piston rod 2. Since the heating ring 1004 is larger than the piston rod 2, it will not abut against the surface of the piston rod 2 and affect its use. Through the expansion and contraction movement of the piston rod 2, the heating ring 1004 can provide continuous heat in a humid or cold environment, or can be set to intermittent heating. The above is the working principle of this corrosion-resistant and wear-resistant grab cylinder.

Claims

1. A corrosion-resistant and wear-resistant grab bucket cylinder, comprising a cylinder body (1), a piston rod (2) and a protective assembly (10), characterized in that: The piston rod (2) is arranged in the inner cavity of the cylinder body (1), a cylinder cover (3) is arranged at the upper end of the cylinder body (1), and the protective component (10) is arranged at the upper end of the cylinder cover (3); The protection assembly (10) includes a fixing frame (1001), and the fixing frames (1001) are respectively arranged on both sides of the upper end of the cylinder head (3). A fixing ring (1002) is arranged on one side of the opposite surface of two groups of the fixing frames (1001). Four groups of the fixing rings (1002) are provided, wherein the opposite surfaces of two groups of the fixing rings (1002) are installed with oil-absorbing sponges (1003), and the opposite surfaces of the other two groups of the fixing rings (1002) are installed with heating rings (1004). Bolts (1005) are installed at the lower end of the fixing frame (1001).

2. The corrosion-resistant and wear-resistant grab bucket cylinder according to claim 1, characterized in that: The inner surface of the cylinder cover (3) is provided with a dust removal ring (4), a main seal (5) is provided below the dust removal ring (4), the lower end of the piston rod (2) is sleeved with a buffer ring (6), the lower end of the buffer ring (6) is provided with a secondary seal (7), the lower end of the secondary seal (7) is provided with a threaded head (8), and the outer surface of the threaded head (8) is sleeved with a nut (9).

3. The corrosion-resistant and wear-resistant grab bucket cylinder according to claim 2, characterized in that: An oil storage tank (13) is installed on the left side of the cylinder body (1), and an oil extraction pipe (14) is provided in the inner cavity of the oil storage tank (13). A micro oil pump (11) is provided above the oil storage tank (13), and an oil delivery pipe (12) is provided at the output end of the micro oil pump (11).

4. The corrosion-resistant and wear-resistant grab bucket cylinder according to claim 2, characterized in that: The two groups of oil-absorbing sponges (1003) and the two groups of heating rings (1004) are combined into a circular ring structure. The two groups of oil-absorbing sponges (1003) are in contact with the outer surface of the upper end of the piston rod (2). The diameter between the two groups of heating rings (1004) is larger than the diameter of the piston rod (2).

5. The corrosion-resistant and wear-resistant grab bucket cylinder according to claim 4, characterized in that: Threaded holes (17) are provided on both sides of the upper end of the cylinder body (1), the bolts (1005) are threadedly connected to the threaded holes (17), and the positions of the two groups of threaded holes (17) are mirror-symmetrical.

6. The corrosion-resistant and wear-resistant grab bucket cylinder according to claim 5, characterized in that: An oil inlet hole (15) is provided below one group of the threaded holes (17), and an oil outlet hole (16) is provided on the right side of the lower end of the cylinder body (1).

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