Hydraulic cylinder body for storing lubricating oil

Abstract

The utility model belongs to the technical field of hydraulic cylinder bodies, and particularly relates to a hydraulic cylinder body for storing lubricating oil, which comprises a cylinder body, a rod hole is arranged at the center of one end of the cylinder body, an oil bin is integrally formed on the cylinder body, and a lubricating oil cavity for storing lubricating grease is arranged at the top of the oil bin. An air inlet communicated with the lubricating oil cavity is formed in the end, away from the rod hole, of the oil bin, two oil outlet holes are formed in the oil bin and located in an inner cavity of the lubricating oil cavity, and one-way valves are installed in the oil outlet holes. According to the hydraulic cylinder body with the stored lubricating oil, the lubricating oil is directly stored in the hydraulic cylinder body, automatic supply is achieved through a specific lubricating mechanism, continuity and uniformity of the lubricating oil are guaranteed, and friction and abrasion of parts in the hydraulic cylinder can be remarkably reduced through the good lubricating effect; the design of the hydraulic cylinder body in which lubricating oil is stored can adapt to various working conditions and environmental conditions, and particularly, good lubricating performance is kept under high-temperature, high-pressure or severe working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder with lubricating oil stored in it. Background Art

[0002] Hydraulic cylinders, as core actuators in hydraulic transmission systems, are widely used in a variety of industries, including aerospace, mining and metallurgy, petrochemicals, public construction, and automotive manufacturing. Their performance stability and reliability directly impact the efficiency and safety of the entire hydraulic system. However, during prolonged and intensive use, friction and wear within the cylinder's internal components often reduce efficiency and even cause failures.

[0003] Existing solutions for lubrication mainly rely on external oil supply systems or adding lubricating oil during regular maintenance, which will cause the following problems in actual operation:

[0004] This method not only increases the complexity and maintenance costs of the system, but also makes it difficult to ensure the continuity and uniformity of the lubricating oil. Especially under high temperature, high pressure or harsh working conditions, traditional lubrication methods often cannot meet the lubrication performance requirements of hydraulic cylinders. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the inventors have conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0006] Specifically, the technical problem to be solved by the present invention is to provide a hydraulic cylinder body with internal lubricating oil to solve the current technical problem of mainly relying on an external oil supply system for lubrication or adding lubricating oil during regular maintenance.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A hydraulic cylinder storing lubricating oil comprises a cylinder body, a rod hole is formed at the center of one end of the cylinder body, an oil tank is integrally formed on the cylinder body, a lubricating oil cavity for storing lubricating grease is formed at the top of the oil tank, and a tank cover for shielding the lubricating oil cavity is detachably mounted on the top of the oil tank;

[0009] An air inlet connected to the lubricating oil chamber is provided at one end of the oil tank away from the rod hole. Two oil outlet holes are provided on the oil tank and in the inner cavity of the lubricating oil chamber. The oil outlet holes connect the lubricating oil chamber with the inside of the rod hole, and a one-way valve is installed inside the oil outlet hole.

[0010] As an improved technical solution, a threaded pipe coaxial with the air inlet is welded to one end of the oil tank away from the rod hole, and the threaded pipe is connected to the interior of the lubricating oil chamber through the air inlet.

[0011] As an improved technical solution, threaded holes are provided on the oil tank and at the four corners of the lubricating oil chamber, and fixing holes are provided at the four corner ends of the tank cover, and fixing bolts threadedly connected to the threaded holes are provided inside the fixing holes.

[0012] As an improved technical solution, a sealing groove is provided at the top of the oil tank and between the lubricating oil chamber and the four threaded holes. A molding that matches the sealing groove is welded on one side of the tank cover close to the oil tank, and the bottom end of the molding is located inside the sealing groove.

[0013] As an improved technical solution, a sealing ring is placed in the inner cavity of the sealing groove, and the thickness of the sealing ring is one centimeter.

[0014] As an improved technical solution, a U-shaped plate is welded to one end of the cylinder body away from the rod hole, and side holes are opened on both sides of the U-shaped plate.

[0015] As an improved technical solution, a through hole is provided on the cylinder body at one end away from the rod hole, and an arc-shaped edge is provided at a corner end of the cylinder body close to the through hole.

[0016] After adopting the above technical solution, the beneficial effects of the utility model are:

[0017] 1. In this utility model, the lubricating oil is directly stored in the hydraulic cylinder body and is automatically supplied through a specific lubrication mechanism. There is no need for an external oil supply system or the addition of lubricating oil during regular maintenance, which ensures the continuity and uniformity of the lubricating oil. The good lubrication effect can significantly reduce the friction and wear of the internal components of the hydraulic cylinder. The hydraulic cylinder body design with stored lubricating oil can adapt to various working conditions and environmental conditions, especially under high temperature, high pressure or harsh working conditions, and can still maintain good lubrication performance and working condition.

[0018] 2. According to the utility model, when installing the tank cover, the pressure strip is firstly made to correspond to the inside of the sealing groove, and then the fixing bolt is passed through the fixing through-hole on the tank cover and is threadedly connected with the threaded hole. The clamping connection between the pressure strip and the sealing groove serves to limit the position of the tank cover, thereby promoting the self-alignment of the fixing through-hole and the threaded hole on the tank cover, making it easier for the fixing bolt to pass through the fixing through-hole and be threadedly connected with the threaded hole. At the same time, when the tank cover is installed on the oil tank, the pressure strip will squeeze the sealing ring inside the sealing groove, and the sealing ring will expand and deform under pressure, thereby avoiding a gap between the pressure strip and the sealing groove, thereby ensuring the sealing of the lubricating oil chamber when the tank cover blocks the lubricating oil chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder body with lubricating oil stored in it according to the present invention.

[0021] Figure 2 This is a structural schematic diagram of an oil outlet hole of a hydraulic cylinder body storing lubricating oil in the utility model.

[0022] Figure 3 This is a schematic diagram of the separation structure of a cylinder body and a compartment cover of a hydraulic cylinder storing lubricating oil in the present invention.

[0023] Figure 4 The utility model is a bottom view of the structure of a compartment cover of a hydraulic cylinder body storing lubricating oil.

[0024] Description of reference numerals:

[0025] 1. Cylinder body; 11. Through hole; 12. Rod hole; 13. Side hole; 14. U-shaped plate; 2. Oil tank; 21. Tank cover; 22. Fixing bolt; 23. Threaded hole; 24. Lubricating oil chamber; 25. Sealing groove; 26. Sealing ring; 27. Threaded pipe; 28. Air inlet; 29. ​​Oil outlet; 210. One-way valve; 211. Pressure strip. DETAILED DESCRIPTION

[0026] 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.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0029] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0030] like Figures 1 to 4 As shown together, this embodiment provides a hydraulic cylinder with lubricating oil storage, which includes a cylinder body 1, a rod hole 12 is formed at the center of one end of the cylinder body 1, an oil tank 2 is integrally formed on the cylinder body 1, a lubricating oil chamber 24 for storing lubricating grease is formed at the top of the oil tank 2, and a tank cover 21 is detachably installed on the top of the oil tank 2 for covering the lubricating oil chamber 24;

[0031] An air inlet 28 connected to the lubricating oil chamber 24 is provided at one end of the oil tank 2 away from the rod hole 12. Two oil outlet holes 29 are provided on the oil tank 2 and in the inner cavity of the lubricating oil chamber 24. The oil outlet holes 29 connect the lubricating oil chamber 24 with the inside of the rod hole 12, and a one-way valve 210 is installed inside the oil outlet hole 29.

[0032] The lubricating oil is directly stored in the hydraulic cylinder and is automatically supplied through a specific lubrication mechanism. There is no need for an external oil supply system or to add lubricating oil during regular maintenance, which ensures the continuity and uniformity of the lubricating oil. Good lubrication can significantly reduce the friction and wear of the internal components of the hydraulic cylinder. The hydraulic cylinder design with internal lubricating oil can adapt to various working conditions and environmental conditions, especially under high temperature, high pressure or harsh working conditions, and can still maintain good lubrication performance and working condition.

[0033] like Figures 2 to 3 As shown together, in this embodiment, a threaded pipe 27 coaxial with the air inlet 28 is welded to one end of the oil tank 2 away from the rod hole 12 , and the threaded pipe 27 is connected to the interior of the lubricating oil chamber 24 through the air inlet 28 .

[0034] like Figures 1 to 3 As shown in the figure, in this embodiment, threaded holes 23 are provided on the oil tank 2 and at the four corners of the lubricating oil chamber 24, and fixing holes are provided at the four corner ends of the tank cover 21, and fixing bolts 22 threadedly connected to the threaded holes 23 are provided inside the fixing holes.

[0035] like Figures 2 to 4As shown together, in this embodiment, a sealing groove 25 is provided at the top of the oil tank 2 and between the lubricating oil chamber 24 and the four threaded holes 23. A pressure strip 211 that is compatible with the sealing groove 25 is welded on one side of the tank cover 21 close to the oil tank 2, and the bottom end of the pressure strip 211 is located inside the sealing groove 25. When installing the tank cover 21, the pressure strip 211 is first made to enter the inside of the sealing groove 25, and then the fixing bolts 22 are passed through the fixing through-holes on the tank cover 21 and are threadedly connected to the threaded holes 23. The clamping connection between the pressure strip 211 and the sealing groove 25 serves to limit the position of the tank cover 21, thereby prompting the fixing through-holes on the tank cover 21 to self-align with the threaded holes 23, making it easier for the fixing bolts 22 to pass through the fixing through-holes and be threadedly connected to the threaded holes 23.

[0036] like Figures 2 to 3 As shown together, in this embodiment, a sealing ring 26 is placed in the inner cavity of the sealing groove 25, and the thickness of the sealing ring 26 is one centimeter. When the tank cover 21 is installed on the oil tank 2, the pressure strip 211 will squeeze the sealing ring 26 located inside the sealing groove 25, and the sealing ring 26 will expand and deform under pressure, thereby avoiding a gap between the pressure strip 211 and the sealing groove 25, ensuring the sealing of the lubricating oil chamber 24 when the tank cover 21 blocks the lubricating oil chamber 24.

[0037] like Figure 1 and Figure 3 As shown together, in this embodiment, a U-shaped plate 14 is welded to one end of the cylinder body 1 away from the rod hole 12 , and side holes 13 are formed on both sides of the U-shaped plate 14 .

[0038] like Figure 1 As shown, in this embodiment, a through hole 11 is provided on the cylinder body 1 at one end away from the rod hole 12 , and an arc-shaped edge is provided at a corner end of the cylinder body 1 close to the through hole 11 .

[0039] During use, a lubricating oil chamber 24 is installed above the cylinder body 1. Lubricating grease is pre-stored in the inner cavity of the lubricating oil chamber 24. An external press is connected through the threaded pipe 27. When the hydraulic rod needs to be lubricated, the hydraulic rod is first completely retracted into the rod hole 12. The press presses into the lubricating oil chamber 24. The pressure in the lubricating oil chamber 24 becomes higher, which will prompt the hydraulic grease stored in the lubricating oil chamber 24 to be transported to the inside of the rod hole 12 through the one-way valve 210, thereby lubricating the outer wall of the hydraulic rod. After closing the press, the inner cavity of the lubricating oil chamber 24 is depressurized to stop transporting the hydraulic grease.

[0040] It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention. In addition, it should be understood that after reading the technical content of the present invention, those skilled in the art may make various changes, modifications and / or variations to the present invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims of this application.

Claims

1. A hydraulic cylinder with lubricating oil stored in it, characterized in that: The invention comprises a cylinder body (1), a rod hole (12) is provided at the center of one end of the cylinder body (1), an oil tank (2) is integrally formed on the cylinder body (1), a lubricating oil cavity (24) for storing lubricating grease is provided at the top of the oil tank (2), and a tank cover (21) for shielding the lubricating oil cavity (24) is detachably installed at the top of the oil tank (2); An air inlet (28) communicating with the lubricating oil chamber (24) is provided at one end of the oil bin (2) away from the rod hole (12). Two oil outlet holes (29) are provided on the oil bin (2) and located in the inner cavity of the lubricating oil chamber (24). The oil outlet holes (29) communicate the lubricating oil chamber (24) with the interior of the rod hole (12). A one-way valve (210) is installed inside the oil outlet hole (29).

2. The hydraulic cylinder body with lubricating oil stored in it according to claim 1, characterized in that: A threaded pipe (27) coaxial with the air inlet (28) is welded to one end of the oil tank (2) away from the rod hole (12), and the threaded pipe (27) is connected to the interior of the lubricating oil chamber (24) through the air inlet (28).

3. The hydraulic cylinder body with lubricating oil stored in it according to claim 2, characterized in that: Threaded holes (23) are provided on the oil bin (2) and at the four corners of the lubricating oil chamber (24), and fixing holes are provided at the four corner ends of the bin cover (21), and fixing bolts (22) threadedly connected to the threaded holes (23) are provided inside the fixing holes.

4. The hydraulic cylinder body with lubricating oil stored in it according to claim 3, characterized in that: A sealing groove (25) is provided at the top of the oil bin (2) and between the lubricating oil cavity (24) and the four threaded holes (23); a pressure strip (211) adapted to the sealing groove (25) is welded on one side of the bin cover (21) close to the oil bin (2), and the bottom end of the pressure strip (211) is located inside the sealing groove (25).

5. The hydraulic cylinder body with lubricating oil storage according to claim 4, characterized in that: A sealing ring (26) is placed in the inner cavity of the sealing groove (25), and the thickness of the sealing ring (26) is one centimeter.

6. The hydraulic cylinder body with lubricating oil stored in it according to claim 5, characterized in that: A U-shaped plate (14) is welded to one end of the cylinder body (1) away from the rod hole (12), and side holes (13) are provided on both sides of the U-shaped plate (14).

7. The hydraulic cylinder body with lubricating oil stored in it according to claim 6, characterized in that: A through hole (11) is provided on the cylinder body (1) at one end away from the rod hole (12), and an arc-shaped edge is provided at the corner end of the cylinder body (1) close to the through hole (11).

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