Oil cylinder cover assembly and oil cylinder

Abstract

The utility model relates to the technical field of oil cylinders, in particular to an oil cylinder cover assembly and an oil cylinder, which comprises an oil cylinder cover body, a containing groove is arranged on the top surface of the oil cylinder cover body, a cover plate is sleeved on the top surface of the oil cylinder cover body, an oil filling port is arranged on the surface of the cover plate, and an oil absorption cotton ring is embedded on the inner ring surface of the top of the oil cylinder cover body. A cotton core is fixed to the outer ring face of the oil absorption cotton ring, the bottom end of the cotton core extends into the bottom of the containing groove, and lubricating oil is contained in the containing groove. The sealing device has the beneficial effects that through the design of the first embedding groove and the sealing ring, tight sealing with the top of the oil cylinder is achieved, and leakage of hydraulic oil is effectively prevented. And the inner ring diameter of the sealing ring is smaller than that of the oil cylinder cover body, so that close contact between the sealing ring and the piston rod is ensured, and the sealing performance is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, and specifically relates to an oil cylinder head assembly and an oil cylinder. Background Art

[0002] In a hydraulic system, an oil cylinder is a key component used to convert hydraulic energy into mechanical energy and drive a piston rod to perform linear motion. As an important part of the oil cylinder, the oil cylinder head not only needs to ensure the sealing performance of the oil cylinder to prevent hydraulic oil leakage, but also needs to consider the lubrication problem of the piston rod during reciprocating motion.

[0003] Traditional oil cylinder head designs often only focus on sealing performance and use sealing elements such as sealing rings to ensure that the hydraulic oil inside the oil cylinder does not leak. However, this design often ignores the lubrication problem of the piston rod. During the reciprocating motion of the piston rod, if there is insufficient lubrication, it will lead to increased friction and wear, and even affect the normal operation of the hydraulic system.

[0004] To solve the lubrication problem of the piston rod, some oil cylinder head designs adopt an external lubrication method, that is, a lubrication device is set outside the oil cylinder, and lubricating oil is applied regularly to lubricate the piston rod. However, this method has disadvantages such as cumbersome operation and uneven lubrication, and it is difficult to ensure that the lubricating oil can be continuously and stably applied to the piston rod.

[0005] Therefore, there is a need in the market for an oil cylinder head assembly that can both ensure the sealing performance of the oil cylinder and achieve automatic lubrication of the piston rod. Content of the Utility Model

[0006] The purpose of the utility model is to provide an oil cylinder head assembly and an oil cylinder to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solution: An oil cylinder head assembly includes an oil cylinder head body. A storage groove is formed on the top surface of the oil cylinder head body. A cover plate is sleeved on the top surface of the oil cylinder head body. An oil injection port is formed on the surface of the cover plate. An oil absorption cotton ring is embedded on the inner ring surface at the top of the oil cylinder head body. A cotton core is fixed to the outer ring surface of the oil absorption cotton ring. The bottom end of the cotton core extends into the bottom of the storage groove. Lubricating oil is contained inside the storage groove.

[0008] Preferably, the oil cylinder head body is in the shape of a "zhong" - shaped circular tube, and a plurality of bolt holes are formed on the surface of the oil cylinder head body.

[0009] Preferably, an embedding groove one is formed on the inner ring surface of the oil cylinder head body. The embedding groove one is an annular groove. There are two embedding grooves one, and the two embedding grooves one are respectively distributed at the upper and lower ends of the oil cylinder head body. A sealing ring is fixed inside the embedding groove one. The inner ring diameter of the sealing ring is smaller than the inner ring diameter of the oil cylinder head body.

[0010] ​Preferably, the storage groove is an annular groove, the cover plate is an annular plate with an "L" shaped cross section, the surface of the cover plate has multiple through holes, a screw is inserted into the inside of the through holes, the height of the screw is greater than the thickness of the top plate of the cover plate, and a nut is screwed onto the top of the screw.

[0011] Preferably, the top and bottom surfaces of the cover plate are integrally formed with a plug ring, which is a circular ring plate with an inverted isosceles trapezoidal cross-section, and the bottom end of the plug ring is inserted into the storage groove.

[0012] Preferably, the oil inlet passes through the top plate of the plug ring and the cover plate, the inner wall of the oil inlet is provided with internal threads, the screw-in end cap is a "T" shaped cylinder, the surface of the screw-in end cap is provided with external threads, and the external threads and internal threads are connected in a mating manner.

[0013] Preferably, the inner wall of the top of the cylinder head body is provided with an insert groove 2, which is an annular groove. The oil-absorbing cotton ring is fixed in the insert groove 2. The inner annular diameter of the oil-absorbing cotton ring is smaller than the inner annular diameter of the cylinder head body. The cotton core passes through a through hole, which is opened on the side wall of the insert groove 2 and connects the insert groove 2 and the storage groove.

[0014] A hydraulic cylinder, including a cylinder cover assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The cylinder head assembly and cylinder proposed in this utility model achieve a tight seal with the top of the cylinder through the design of the insert groove and the sealing ring, effectively preventing hydraulic oil leakage. The inner ring diameter of the sealing ring is smaller than that of the cylinder head body, ensuring tight contact between the sealing ring and the piston rod, further improving the sealing performance. By setting a storage groove and an oil-absorbing cotton ring on the top of the cylinder head body, automatic lubrication of the piston rod is achieved. Lubricating oil penetrates into the oil-absorbing cotton ring through the cotton core. When the piston rod reciprocates, the lubricating oil on the surface of the oil-absorbing cotton ring is coated on the piston rod, ensuring continuous lubrication of the piston rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a top view of the structure of this utility model;

[0019] Figure 3 for Figure 2 Sectional view of the structure at point AA;

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0021] In the figure: oil cylinder head body 1, bolt hole 2, first embedding groove 3, sealing ring 4, storage groove 5, cover plate 6, plug ring 7, through hole 8, screw rod 9, nut 10, second embedding groove 11, oil absorption cotton ring 12, through hole 13, cotton core 14, oil injection port 15, screwed封头 16. Detailed implementation manner

[0022] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0023] Embodiment 1, please refer to Figures 1 to 4 , the present utility model provides a technical solution: an oil cylinder head assembly, including an oil cylinder head body 1, the oil cylinder head body 1 is a "middle"-shaped circular tube, the surface of the oil cylinder head body 1 is provided with a plurality of bolt holes 2, the inner ring surface of the oil cylinder head body 1 is provided with a first embedding groove 3, the first embedding groove 3 is an annular groove, there are two first embedding grooves 3, and the two first embedding grooves 3 are respectively distributed at the upper and lower ends of the oil cylinder head body 1. A sealing ring 4 is fixed inside the first embedding groove 3, and the inner ring diameter of the sealing ring 4 is smaller than the inner ring diameter of the oil cylinder head body 1. Insert the bottom end of the oil cylinder head body 1 into the top opening of the oil cylinder. After passing a bolt through the bolt hole 2, fix the oil cylinder head body 1 at the top end of the oil cylinder. The oil cylinder head body 1 is sleeved on the piston rod, and the sealing ring 4 is clamped between the piston rod and the oil cylinder head body 1.

[0024] The top surface of the cylinder head body 1 has a storage groove 5, and a cover plate 6 is fitted onto the top surface of the cylinder head body 1. An oil inlet 15 is provided on the surface of the cover plate 6. An oil-absorbing cotton ring 12 is embedded in the inner ring of the top of the cylinder head body 1, and a cotton core 14 is fixed to the outer ring of the oil-absorbing cotton ring 12. The bottom end of the cotton core 14 extends into the bottom of the storage groove 5, which is filled with lubricating oil. The storage groove 5 is an annular groove. The cover plate 6 is an L-shaped annular plate. Multiple through holes 8 are provided on the surface of the cover plate 6, and screws 9 are inserted into the through holes 8. The height of the screws 9 is greater than the thickness of the top plate of the cover plate 6, and a nut 10 is screwed onto the top of the screws 9. A plug ring 7 is integrally formed on the bottom surface of the top plate of the cover plate 6. The plug ring 7 is a circular plate with an inverted isosceles trapezoidal cross-section, and the bottom end of the plug ring 7 is inserted into the receiving groove 5. The oil filling port 15 passes through the plug ring 7 and the top plate of the cover plate 6. The inner wall of the oil filling port 15 is provided with internal threads. The screw-on end cap 16 is a "T"-shaped cylinder. The surface of the screw-on end cap 16 is provided with external threads, and the external threads and internal threads are connected. The top inner wall of the cylinder head body 1 is provided with an insert groove 2 11. The insert groove 2 11 is an annular groove. The oil-absorbing cotton ring 12 is fixed in the insert groove 2 11. The inner ring diameter of the oil-absorbing cotton ring 12 is smaller than the inner ring diameter of the cylinder head body 1. The cotton core 14 passes through the through hole 13. The through hole 13 is opened on the side wall of the insert groove 2 11. The through hole 13 connects the insert groove 2 11 and the receiving groove 5.

[0025] The cover plate 6 is pre-installed on the top of the cylinder head body 1. At this time, the screw 9 passes through the corresponding through hole 8, and the nut 10 is screwed onto the top of the screw 9. The cover plate 6 then seals the storage groove 5. Lubricating oil is injected into the storage groove 5 through the oil inlet 15, and the screw cap 16 is screwed into the oil inlet 15. The lubricating oil inside the storage groove 5 permeates the cotton core 14 and the oil-absorbing cotton ring 12. During the extension and retraction of the piston rod, the lubricating oil on the surface of the oil-absorbing cotton ring 12 is applied to the piston rod. Lubricating oil can be stored in the storage groove 5 periodically as needed. In this way, the cylinder head body 1 not only seals the top of the cylinder but also lubricates the piston rod.

[0026] Example 2, based on Example 1, proposes a hydraulic cylinder, including a hydraulic cylinder cover assembly.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cylinder head assembly, comprising a cylinder head body (1), characterized in that: The top surface of the cylinder head body (1) is provided with a storage groove (5). A cover plate (6) is sleeved on the top surface of the cylinder head body (1). An oil injection port (15) is provided on the surface of the cover plate (6). An oil absorption cotton ring (12) is embedded on the inner ring surface at the top of the cylinder head body (1). A cotton core (14) is fixed on the outer ring surface of the oil absorption cotton ring (12). The bottom end of the cotton core (14) extends into the bottom of the storage groove (5). Lubricating oil is contained inside the storage groove (5).

2. The cylinder head assembly according to claim 1, characterized in that: The cylinder head body (1) is in the shape of a "middle" - shaped circular tube. A plurality of bolt holes (2) are provided on the surface of the cylinder head body (1).

3. A cylinder head assembly according to claim 1, characterized in that: An embedding groove one (3) is provided on the inner ring surface of the cylinder head body (1). The embedding groove one (3) is in the shape of an annular groove. There are two embedding grooves one (3), and the two embedding grooves one (3) are respectively distributed at the upper and lower ends of the cylinder head body (1). A sealing ring (4) is fixed inside the embedding groove one (3). The inner ring diameter of the sealing ring (4) is smaller than the inner ring diameter of the cylinder head body (1).

4. A cylinder head assembly according to claim 1, characterized in that: The storage groove (5) is in the shape of an annular groove. The cover plate (6) is in the shape of a circular ring plate with an "L" - shaped cross - section. A plurality of through holes (8) are provided on the surface of the cover plate (6). A screw rod (9) is inserted into the through hole (8). The height of the screw rod (9) is greater than the thickness of the top plate of the cover plate (6). A nut (10) is sleeved and screwed on the top end of the screw rod (9).

5. A cylinder head assembly according to claim 1, characterized in that: A plug ring (7) is integrally formed on the bottom surface of the top plate of the cover plate (6). The plug ring (7) is in the shape of a circular ring plate with an inverted isosceles trapezoid cross - section. The bottom end of the plug ring (7) is inserted into the storage groove (5).

6. A cylinder head assembly according to claim 1, characterized in that: The oil injection port (15) penetrates through the plug ring (7) and the top plate of the cover plate (6). Internal threads are provided on the inner wall of the oil injection port (15). The screwed - on head (16) is in the shape of a "T" - shaped cylinder. External threads are provided on the surface of the screwed - on head (16). The external threads and the internal threads are in mating connection.

7. A cylinder head assembly according to claim 1, characterized in that: An embedding groove two (11) is provided on the inner wall at the top end of the cylinder head body (1). The embedding groove two (11) is in the shape of an annular groove. The oil absorption cotton ring (......) 8. A hydraulic cylinder, characterized in that: Including the cylinder head assembly according to any one of the above - mentioned claims 1 - 7. It should be noted that there is an ellipsis in the translation of in the original text you provided. Please check and correct it if necessary. The complete translation of should be: "所述油缸盖本体(1)的顶端内壁开设有嵌装槽二(11),嵌装槽二(11)呈环形槽,吸油棉圈(12)固定在嵌装槽二(11)中,吸油棉圈(12)的内环径小于油缸盖本体(1)的内环径,棉芯(14)贯穿通孔(13),通孔(13)开设在嵌装槽二(11)的侧壁,通孔(13)连通嵌装槽二(11)和收纳槽(5)。" The translated text is: "An embedding groove two (11) is provided on the inner wall at the top end of the cylinder head body (1). The embedding groove two (11) is in the shape of an annular groove. The oil absorption cotton ring (12) is fixed in the embedding groove two (11). The inner ring diameter of the oil absorption cotton ring (12) is smaller than the inner ring diameter of the cylinder head body (..."

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