Novel thin-wall type hydraulic oil cylinder resistant to salt and corrosion

Abstract

The utility model discloses a novel thin-wall type hydraulic oil cylinder resistant to salt and corrosion, and belongs to the field of thin-wall type hydraulic oil cylinders. Comprising a cylinder barrel, a piston moving in the cylinder barrel in the axial direction, a front end cover installed at the front end of the cylinder barrel, a rear end cover arranged at the rear end of the cylinder barrel, a first oil nozzle fixedly connected to the side face of the rear end of the cylinder barrel and a second oil nozzle fixedly connected to the front end cover and extending into the front end of the cylinder barrel. According to the novel thin-wall type hydraulic oil cylinder resistant to salt and corrosion, the cylinder barrel is made of the aluminum alloy material, the characteristics of compact structure and light weight of the hydraulic oil cylinder are kept, the hydraulic oil cylinder is suitable for occasions with strict requirements for weight, meanwhile, the protective sleeve made of the stainless steel material is added, the salt and corrosion resistance of the hydraulic oil cylinder is remarkably improved, and the service life of the hydraulic oil cylinder is prolonged. And the coating can be used for a long time in a high-corrosion environment.

Description

Technical Field

[0001] The present application relates to the technical field of thin-walled hydraulic cylinders, and in particular to a novel thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant. Background Art

[0002] Thin-walled hydraulic cylinders are high-performance, compact hydraulic components. These are cylindrical containers with thin walls, typically made from high-strength, lightweight materials such as aluminum or titanium alloys. The ratio of inner diameter to wall thickness is typically less than 0.1, a crucial factor in ensuring the cylinder's strength and rigidity.

[0003] Because thin-walled cylinders have large diameters, thin walls, and a high diameter-to-thickness ratio, they are often made of lightweight alloys such as aluminum alloy. Although aluminum alloys and other alloy materials have certain salt and corrosion resistance, they are lower in strength and rigidity than stainless steel. They are only suitable for applications with strict weight requirements and mild corrosion. In environments with weight requirements and high corrosion, their service life is shortened.

[0004] Therefore, the present application provides a novel thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant to solve the above problems. Utility Model Content

[0005] The present application provides a novel thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant, aiming to solve the problem in the background art that the existing thin-walled hydraulic cylinder is only suitable for occasions with strict weight requirements and not particularly strong corrosiveness, and cannot be used for a long time in a highly corrosive environment.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a new type of salt-resistant and corrosion-resistant thin-walled hydraulic cylinder, comprising a cylinder barrel, a piston that moves axially in the cylinder barrel, a front end cover installed at the front end of the cylinder barrel, a rear end cover arranged at the rear end of the cylinder barrel, a first oil nozzle fixedly connected to the rear end side of the cylinder barrel, and a second oil nozzle fixedly connected to the front end cover and extending to the interior of the front end of the cylinder barrel.

[0007] The front end of the cylinder has a connecting plate that fits over the outside of the piston connecting rod. A protective sleeve is fitted over the outside of the cylinder and the rear end cover. The connecting plate, on a side near the rear end cover, has a slot for inserting the edge of the protective sleeve. The rear end cover has a bolt head that passes through the protective sleeve. A nut is threaded onto the bolt head, which contacts the protective sleeve and locks the sleeve. The cylinder is made of aluminum alloy, and the protective sleeve is made of stainless steel. The inner wall of the protective sleeve is in contact with the outer wall of the cylinder. Thus, the cylinder is made of aluminum alloy, maintaining the compact and lightweight structure of the hydraulic cylinder, making it suitable for applications with strict weight requirements. At the same time, the addition of the stainless steel protective sleeve significantly improves the hydraulic cylinder's salt and corrosion resistance, enabling long-term use in highly corrosive environments.

[0008] Preferably, the rear end cover is welded to the rear end of the cylinder.

[0009] Preferably, the card slot has a concave-shaped sealing ring for covering the opening edge of the protective sleeve.

[0010] Preferably, an anti-slip gasket sleeved on the bolt head is provided between the nut and the protective sleeve.

[0011] Preferably, the front end cover has a plurality of hexagon socket bolts that are screwed to the connecting plate and distributed in a circular array.

[0012] Preferably, a sealing gasket groove is provided on a side of the connecting plate close to the front end cover, and a sealing gasket is provided in the sealing gasket groove and contacts a side of the front end cover close to the connecting plate.

[0013] Preferably, the sealing gasket has a clearance hole corresponding to the hexagon socket bolt and the second oil nozzle.

[0014] This new salt-resistant and corrosion-resistant thin-walled hydraulic cylinder has a cylinder made of aluminum alloy, which maintains the compact structure and lightweight characteristics of the hydraulic cylinder and is suitable for occasions with strict weight requirements. At the same time, by adding a stainless steel protective cover, the salt and corrosion resistance of the hydraulic cylinder is significantly improved, enabling it to be used for a long time in a highly corrosive environment.

[0015] This new salt-resistant and corrosion-resistant thin-walled hydraulic cylinder has a stainless steel protective sleeve attached to the outer wall of the cylinder, which not only plays a protective role but also provides indirect support for the cylinder wall, thereby improving pressure resistance and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a new type of thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant;

[0017] Figure 2This is a schematic diagram of the explosion structure of a new type of thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant;

[0018] Figure 3 This is a schematic diagram of the side truncated structure of a new type of salt-resistant and corrosion-resistant thin-walled hydraulic cylinder;

[0019] Figure 4 for Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0020] In the picture:

[0021] 1. Cylinder; 11. Connecting plate; 111. Clamping groove; 112. Sealing gasket groove; 12. First oil nozzle;

[0022] 13. Second oil nozzle;

[0023] 2. Piston;

[0024] 3. Rear end cover; 31. Bolt head; 32. Nut; 33. Anti-slip washer;

[0025] 4. Front cover; 5. Hexagon socket bolt;

[0026] 6. Sealing gasket; 61. Give way hole;

[0027] 7. Protective cover; 8. Concave sealing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] This embodiment provides a novel thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant. Figure 1-Figure 4 As shown, the new salt-resistant and corrosion-resistant thin-walled hydraulic cylinder includes a cylinder barrel 1, a piston 2 that moves axially in the cylinder barrel 1, a front end cover 4 installed at the front end of the cylinder barrel 1, a rear end cover 3 arranged at the rear end of the cylinder barrel 1, a first oil nozzle 12 fixedly connected to the rear end side of the cylinder barrel 1, and a second oil nozzle 13 fixedly connected to the front end cover 4 and extending to the interior of the front end of the cylinder barrel 1.

[0030] The front end of the cylinder 1 has a connecting plate 11 that is sleeved on the outside of the connecting rod of the piston 2, and a protective sleeve 7 is sleeved on the outside of the cylinder 1 and the rear end cover 3. The side of the connecting plate 11 close to the rear end cover 3 has a slot 111 for accommodating the insertion of the opening edge of the protective sleeve 7. The rear end cover 3 has a bolt head 31 that passes through the protective sleeve 7. The bolt head 31 is threaded with a nut 32 that contacts the protective sleeve 7 for locking the protective sleeve 7. The cylinder 1 is made of aluminum alloy, the protective sleeve 7 is made of stainless steel, and the inner wall of the protective sleeve 7 is in contact with the outer wall of the cylinder 1.

[0031] During use, when the hydraulic oil enters the cylinder 1 through the first oil nozzle 12 or the second oil nozzle 13, the piston 2 moves axially along the cylinder 1 under the action of the liquid pressure, thereby realizing the telescopic function of the hydraulic cylinder; the protective sleeve 7, as a protective layer made of stainless steel material, can effectively resist the salt corrosion and other corrosive substances in the external environment, thereby extending the service life of the hydraulic cylinder; the card groove 111 on the connecting plate 11 cooperates with the opening edge of the protective sleeve 7, and the locking effect of the bolt head 31 and the nut 32 ensures the firm connection between the protective sleeve 7 and the cylinder 1, preventing the protective sleeve 7 from loosening or falling off during long-term use. At the same time, it also facilitates the disassembly and assembly of the protective sleeve 7, and facilitates later maintenance and replacement.

[0032] Among them, the rear end cover 3 is welded to the rear end of the cylinder 1; the rear end cover 3 is firmly connected to the rear end of the cylinder 1 by welding, which improves the connection strength between the rear end cover 3 and the cylinder 1 and ensures that the hydraulic cylinder will not leak or loosen during operation.

[0033] Furthermore, the card slot 111 has a concave sealing ring 8 for covering the opening edge of the protective sleeve 7; the concave sealing ring 8 is installed in the card slot 111 and tightly covers the opening edge of the protective sleeve 7, forming an additional sealing barrier to prevent external corrosive substances from penetrating into the protective sleeve 7 through the gap and corroding the cylinder 1.

[0034] Furthermore, an anti-slip washer 33 is provided between the nut 32 and the protective sleeve 7 and is sleeved on the bolt head 31 ; when the nut 32 is tightened, the anti-slip washer 33 prevents the nut from loosening by friction between the two sides.

[0035] Specifically, the front end cover 4 has a plurality of hexagon socket bolts 5 that are screwed to the connecting plate 11 and distributed in a circular array; the front end cover 4 is screwed to the connecting plate 11 through the plurality of hexagon socket bolts 5 to form a stable connection structure, thereby improving the connection strength between the front end cover 4 and the connecting plate 11 and ensuring the overall stability of the hydraulic cylinder.

[0036] Furthermore, a sealing gasket groove 112 is provided on one side of the connecting plate 11 close to the front end cover 4, and a sealing gasket 6 is provided in the sealing gasket groove 112 to contact the side of the front end cover 4 close to the connecting plate 11; the sealing gasket 6 is installed in the sealing gasket groove 112 and closely contacts the corresponding part of the front end cover 4, forming an additional sealing barrier, thereby enhancing the sealing performance between the front end cover 4 and the connecting plate 11 and preventing hydraulic oil leakage.

[0037] It can be understood that the sealing gasket 6 has a clearance hole 61 corresponding to the hexagon socket bolt 5 and the second oil nozzle 13; the clearance hole 61 on the sealing gasket 6 allows the hexagon socket bolt 5 to pass through and fix the connecting plate 11 and the front end cover 4 without affecting the normal operation of the second oil nozzle 13.

[0038] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A novel thin-walled hydraulic cylinder that is salt-resistant and corrosion-resistant, comprising a cylinder barrel (1), a piston (2) that moves axially in the cylinder barrel (1), a front end cover (4) mounted at the front end of the cylinder barrel (1), a rear end cover (3) disposed at the rear end of the cylinder barrel (1), a first oil nozzle (12) fixedly connected to the rear end side of the cylinder barrel (1), and a second oil nozzle (13) fixedly connected to the front end cover (4) and extending to the interior of the front end of the cylinder barrel (1), characterized in that: The front end of the cylinder (1) has a connecting plate (11) which is sleeved on the outside of the connecting rod of the piston (2); the cylinder (1) and the rear end cover (3) are sleeved on the outside with a protective sleeve (7); the side of the connecting plate (11) close to the rear end cover (3) has a slot (111) for accommodating the insertion of the opening edge of the protective sleeve (7); the rear end cover (3) has a bolt head (31) which passes through the protective sleeve (7); the bolt head (31) is screwed with a nut (32) which contacts the protective sleeve (7) for locking the protective sleeve (7); wherein, the cylinder (1) is made of aluminum alloy material, the protective sleeve (7) is made of stainless steel material, and the inner wall of the protective sleeve (7) is in contact with the outer wall of the cylinder (1).

2. The novel thin-walled hydraulic cylinder with salt and corrosion resistance according to claim 1 is characterized in that: The rear end cover (3) is welded to the rear end of the cylinder barrel (1).

3. The novel salt-resistant and corrosion-resistant thin-walled hydraulic cylinder according to claim 2 is characterized in that: The card slot (111) contains a concave-shaped sealing ring (8) for covering the opening edge of the protective sleeve (7).

4. The novel salt-resistant and corrosion-resistant thin-walled hydraulic cylinder according to claim 3 is characterized in that: An anti-slip washer (33) sleeved on the bolt head (31) is provided between the nut (32) and the protective sleeve (7).

5. The novel thin-walled hydraulic cylinder with salt and corrosion resistance according to claim 4 is characterized in that: The front end cover (4) is provided with a plurality of hexagon socket bolts (5) which are screwed to the connecting plate (11) and are distributed in a circular array.

6. The novel salt-resistant and corrosion-resistant thin-walled hydraulic cylinder according to claim 5 is characterized in that: A sealing gasket groove (112) is provided on one side of the connecting plate (11) close to the front end cover (4), and a sealing gasket (6) is provided in the sealing gasket groove (112) and contacts the side of the front end cover (4) close to the connecting plate (11).

7. The novel salt-resistant and corrosion-resistant thin-walled hydraulic cylinder according to claim 6 is characterized in that: The sealing gasket (6) is provided with a clearance hole (61) corresponding to the hexagon socket bolt (5) and the second oil nozzle (13).

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