A viscous damper oil cylinder oil filling hole device

Abstract

The present invention discloses a viscous damper oil cylinder oil filling hole device, including an outer sleeve and a perforated ejector sleeve, an oil filling hole is formed through the axial middle part of the outer sleeve, the perforated ejector sleeve is arranged in the oil filling hole and slidably cooperates with the oil filling hole, a spring is arranged on the inner side of the perforated ejector sleeve, one end of the spring is inserted into the inner side of the perforated ejector sleeve and is pressed against the inner end of the perforated ejector sleeve, and an end cover for positioning the other end of the spring is arranged at the end of the oil filling hole; the perforated ejector sleeve includes a round tube with an open end. The beneficial effect is that the viscous damper structure is composed of the outer sleeve, the perforated ejector sleeve and the spring, and during the oil filling process, the oil pressure at both ends of the device is balanced or the oil receiving end pressure is stabilized, and the oil filling can be automatically stopped to achieve self-sealing, thereby improving the convenience and safety of the oil filling operation; when the structure is used for oil filling, not only can the oil receiving end be continuously filled with oil, but also the oil receiving end can be filled with high pressure oil.

Description

Technical Field

[0001] The invention relates to the technical field of energy dissipation and shock absorption, and in particular to an oil filling hole device of a viscous damper cylinder. Background Art

[0002] Oil cylinders are widely used in various types of equipment, such as hydraulic devices, oil dampers in the field of energy dissipation and shock absorption, etc. The common method of filling a closed oil cylinder is direct pouring, and then closing the oil cylinder after the pouring is completed. Or open a small hole in the oil cylinder, use a funnel or other tools to fill it, and close the oil filling port with bolts after the filling is completed. However, these oil filling methods are difficult to ensure that the oil chamber is completely filled, and high-pressure oil filling of the oil cylinder cannot be achieved. Therefore, the applicant proposes an oil filling hole device that is convenient for high-pressure oil filling and can automatically stop after the oil chamber is filled. Summary of the invention

[0003] The purpose of the present invention is to provide a viscous damper cylinder oil filling hole device in order to solve the above-mentioned problems. The preferred technical solution among the many technical solutions provided by the present invention has the following technical effects: adopting a viscous damper structure, which can automatically stop after the oil chamber is full, and can meet the needs of high-pressure oil filling, and is easy to use, safe and convenient, etc., as described below in detail.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a viscous damper oil cylinder oil injection hole device, comprising an outer sleeve and a perforated ejector sleeve, wherein an oil injection through hole is formed through the axial middle portion of the outer sleeve, the ejector sleeve with a hole is arranged in the oil injection through hole and slidably cooperates with the oil injection through hole, a spring is arranged on the inner side of the ejector sleeve with a hole, one end of the spring is inserted into the inner side of the ejector sleeve with a hole and is pressed tightly against the inner end of the ejector sleeve with a hole, and an end cap for positioning the other end of the spring is arranged at the end of the oil injection through hole;

[0006] The perforated push rod sleeve comprises a round tube with an opening at one end, a sealing portion is arranged at the other end of the round tube, an oil through hole is formed on the round tube, and a locking structure matching the sealing portion to seal the oil injection through hole is arranged inside the oil injection through hole. In the initial state, the sealing portion is in close contact with the locking structure, and after the two are in contact, the oil injection through hole is divided into two independent sections;

[0007] An oil injection cavity is arranged inside the oil injection through hole corresponding to the oil through hole, and the diameter of the oil injection cavity is larger than the diameter of the circular tube.

[0008] Preferably, the outer sleeve consists of an external thread section and a smooth surface section, and the surface of the external thread section is formed with external threads.

[0009] Preferably, an end cap is provided at the end of the smooth surface segment, and the end cap is threadably matched with the oil injection through hole.

[0010] Preferably, the end cover surface is provided with an external thread, the oil injection through hole is provided with an internal thread corresponding to the external thread, and the end cover is axially penetrated with an oil outlet hole; the oil outlet hole is composed of a circular hole portion and a locking hole which are interconnected, and the locking hole is a hexagonal hole.

[0011] Preferably, a dust cover is provided at the end of the threaded section, and the dust cover comprises a plug-in portion and a cover plate. After the plug-in portion is inserted into the oil injection through hole, the cover plate is connected to the end of the external threaded section.

[0012] Preferably, the oil injection through hole includes a sliding part, the round tube is inserted into the sliding part, and is gap-fitted with the sliding part and can slide relatively, the locking structure is located at the end of the sliding part, and the spring is located inside the sliding part.

[0013] Preferably, the oil injection chamber is an annular groove formed on the sliding portion, the oil injection chamber coincides with the axis of the sliding portion, and the oil injection chamber is located between the locking structure and the end cover.

[0014] Preferably, the locking structure is an annular inclined surface, the larger diameter end of the inclined surface is consistent with the diameter of the sliding portion, and a sealing surface is formed on the sealing portion corresponding to the inclined surface. In an initial state, the sealing surface is in close contact with the inclined surface.

[0015] Preferably, the sealing portion is a truncated cone-shaped structure formed at the end of the circular tube, and the sealing surface is an inclined surface of the sealing portion.

[0016] Preferably, a plurality of oil holes are provided and are evenly distributed on the same circular ring outside the circular tube.

[0017] In summary, the beneficial effects of the present invention are as follows: 1. The viscous damper structure is composed of an outer sleeve, a perforated mandrel sleeve and a spring. During the oil filling process, the oil pressure at both ends of the device is balanced or the oil receiving end pressure is stabilized, and the oil filling is automatically stopped to achieve self-sealing, thereby improving the convenience and safety of the oil filling operation;

[0018] 2. When this structure is used for oil injection, not only can oil be continuously injected into the oil receiving end, but also oil can be injected into the oil receiving end under high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram of the left view structure;

[0022] Figure 3 yes Figure 1 A right view structural diagram of ;

[0023] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 6 It is a schematic diagram of the explosion structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the dust cover of the present invention;

[0027] Figure 8 It is a schematic structural diagram of a top rod sleeve with a hole of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the end cover of the present invention.

[0029] The following are the descriptions of the reference numerals:

[0030] 1. Outer sleeve; 11. External thread section; 12. Smooth section; 13. Sliding part; 14. Oil filling chamber; 15. Locking structure; 2. Ejector sleeve with hole; 21. Sealing part; 22. Oil hole; 23. Round tube; 3. Spring; 4. End cover; 41. Round hole part; 42. Locking hole; 5. Dust cover; 51. Cover plate; 52. Connecting part. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9As shown, the present invention provides an oil filling hole device for a viscous damper cylinder, comprising an outer sleeve 1 and a perforated push rod sleeve 2, wherein the outer sleeve 1 is formed with an oil filling hole in the axial middle part, the push rod sleeve 2 with a hole is arranged in the oil filling hole and slidably cooperates with the oil filling hole, a spring 3 is arranged on the inner side of the push rod sleeve 2 with a hole, one end of the spring 3 is inserted into the inner side of the push rod sleeve 2 with a hole and is pressed tightly against the inner end of the push rod sleeve 2 with a hole, and an end cover 4 for positioning the other end of the spring 3 is arranged at the end of the oil filling hole; the push rod sleeve 2 with a hole comprises a circular tube 23 with an opening at one end, a sealing portion 21 is arranged at the other end of the circular tube 23, an oil through hole 22 is formed on the circular tube 23, and a locking structure 15 matching the sealing portion 21 for pressing and sealing is arranged inside the oil filling hole, and in the initial state, the The sealing portion 21 is in close contact with the locking structure 15, and after the two are in contact, the oil injection through hole is divided into two independent sections. In this state, the oil injection through hole is in a closed state; when the pressure of the external threaded section 11 of the oil injection through hole increases, the perforated top rod sleeve 2 slides under the squeeze of the oil pressure, the sealing portion 21 is separated from the locking structure 15, and the oil enters the oil injection cavity 14 after passing through the sealing structure, and enters the circular tube 23 through the oil through hole 22, and finally is output through the sliding portion 13 and the end cover 4 until the oil pressure at both ends of the oil injection through hole is balanced; an oil injection cavity 14 is provided on the inner side of the oil injection through hole corresponding to the oil through hole 22, and the diameter of the oil injection cavity 14 is larger than the diameter of the circular tube 23. In this way, a gap for oil transportation to the inside of the oil through hole 22 can be reserved to facilitate the oil to enter the circular tube 23 through the oil through hole 22 and be output.

[0033] As an optional embodiment, the outer sleeve 1 is composed of an external thread segment 11 and a smooth surface segment 12, and the surface of the external thread segment 11 is formed with external threads;

[0034] An end cap 4 is provided at the end of the smooth section 12, and the end cap 4 is threadedly matched with the oil injection through hole, and the end cap 4 is used to fix the end of the spring 3 to prevent the spring 3 from popping out from the inside of the oil injection through hole; the surface of the end cap 4 is provided with an external thread, and the oil injection through hole is provided with an internal thread corresponding to the external thread, and the end cap 4 is axially penetrated with an oil outlet hole; the oil outlet hole is composed of a circular hole portion 41 and a locking hole 42 that are interconnected, and the locking hole 42 is a hexagonal hole; the locking hole 42 is used to use a tool to tighten the end cap 4 and the oil injection through hole;

[0035] The end of the threaded section is provided with a dust cover 5, and the dust cover 5 includes a plug-in portion 52 and a cover plate 51. After the plug-in portion 52 is inserted into the oil injection through hole, the cover plate 51 is connected to the end of the external threaded section 11; the dust cover 5 is installed at the end of the oil injection through hole to prevent dust from entering the oil injection through hole, and needs to be pulled out when in use;

[0036] The oil injection through hole includes a sliding part 13, the round tube 23 is inserted into the sliding part 13, and is in clearance fit with the sliding part 13 and can slide relatively, the locking structure 15 is located at the end of the sliding part 13, and the spring 3 is located inside the sliding part 13; the round tube 23 can make a linear motion along the axial direction of the sliding part 13 under the action of oil pressure, and reset under the action of the spring 3 after the oil pressure at both ends is balanced; the oil injection chamber 14 is an annular groove formed on the sliding part 13, the oil injection chamber 14 coincides with the axis of the sliding part 13, and the oil injection chamber 14 is located between the locking structure 15 and the end cover 4 ; After the oil pressure pushes the sealing part 21 to separate from the locking structure 15, the sealing part 21 is pushed into the oil filling chamber 14. There is an oil flow path between the oil filling chamber 14 and the locking structure 15. At this time, the oil enters the oil filling chamber 14 and enters the circular tube 23 through the oil hole 22; the locking structure 15 is an annular inclined surface, and the larger diameter end of the inclined surface is consistent with the diameter of the sliding part 13. A sealing surface is formed on the sealing part 21 corresponding to the inclined surface. In the initial state, the sealing surface is in close contact with the inclined surface; the sealing part 21 is a truncated cone-shaped structure formed at the end of the circular tube 23, and the sealing surface is the inclined surface of the sealing part 21;

[0037] There are multiple oil holes 22 evenly distributed on the same circular ring outside the circular tube 23 . The multiple oil holes 22 can improve the uniformity of oil entering the circular tube 23 from the oil injection cavity 14 .

[0038] By adopting the above structure, a viscous damper structure is formed by an outer sleeve 1, a perforated top rod sleeve 2 and a spring 3. During the oil filling process, the oil pressure at both ends of the device is balanced or the oil receiving end pressure is stabilized, and the oil filling is automatically stopped to achieve self-sealing, thereby improving the convenience and safety of the oil filling operation. When adopting this structure for oil filling, not only can the oil receiving end be continuously filled with oil, but also the oil receiving end can be filled with high pressure oil.

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A viscous damper oil cylinder oil filling hole device, characterized in that: It comprises an outer sleeve (1) and a push rod sleeve with a hole (2), wherein an oil injection hole is formed through the axial middle of the outer sleeve (1), the push rod sleeve with a hole (2) is arranged in the oil injection hole and slidably cooperates with the oil injection hole, a spring (3) is arranged on the inner side of the push rod sleeve with a hole (2), one end of the spring (3) is inserted into the inner side of the push rod sleeve with a hole (2) and is pressed tightly against the inner end of the push rod sleeve with a hole (2), and an end cover (4) for positioning the other end of the spring (3) is arranged at the end of the oil injection hole; The perforated push rod sleeve (2) comprises a round tube (23) with an opening at one end, a sealing portion (21) being provided at the other end of the round tube (23), an oil through hole (22) being formed on the round tube (23), and a locking structure (15) matching the sealing portion (21) for sealing the oil injection through hole being provided inside the oil injection through hole, wherein in an initial state, the sealing portion (21) is in close contact with the locking structure (15), and after the two are in contact, the oil injection through hole is divided into two independent sections; An oil injection cavity (14) is provided on the inner side of the oil injection through hole corresponding to the oil through hole (22), and the diameter of the oil injection cavity (14) is greater than the diameter of the circular tube (23).

2. The oil filling hole device of the viscous damper cylinder according to claim 1, characterized in that: The outer sleeve (1) is composed of an external thread section (11) and a smooth surface section (12), and the surface of the external thread section (11) is formed with external threads.

3. The oil filling hole device of the viscous damper cylinder according to claim 2, characterized in that: An end cover (4) is provided at the end of the smooth surface segment (12), and the end cover (4) is threadably matched with the oil injection through hole.

4. The oil filling hole device of the viscous damper cylinder according to claim 3, characterized in that: The surface of the end cover (4) is provided with an external thread, the oil injection through hole is provided with an internal thread corresponding to the external thread, and the end cover (4) is formed with an oil outlet hole axially extending therethrough; the oil outlet hole is composed of a circular hole portion (41) and a locking hole (42) which are interconnected, and the locking hole (42) is a hexagonal hole.

5. The oil filling hole device of the viscous damper cylinder according to claim 2, characterized in that: A dust cover (5) is provided at the end of the threaded section, the dust cover (5) comprising an inserting portion (52) and a cover plate (51), and after the inserting portion (52) is inserted into the oil injection through hole, the cover plate (51) is connected to the end of the external threaded section (11).

6. The oil filling hole device of the viscous damper cylinder according to claim 1, characterized in that: The oil injection through hole comprises a sliding portion (13), the round tube (23) is inserted into the sliding portion (13), and is clearance-matched with the sliding portion (13) and can slide relatively therewith, the locking structure (15) is located at the end of the sliding portion (13), and the spring (3) is located inside the sliding portion (13).

7. The oil filling hole device of the viscous damper cylinder according to claim 6, characterized in that: The oil injection chamber (14) is an annular groove formed on the sliding portion (13), the oil injection chamber (14) coincides with the axis of the sliding portion (13), and the oil injection chamber (14) is located between the locking structure (15) and the end cover (4).

8. The oil filling hole device of the viscous damper cylinder according to claim 6, characterized in that: The locking structure (15) is an annular inclined surface, the larger diameter end of the inclined surface is consistent with the diameter of the sliding portion (13), and a sealing surface is formed on the sealing portion (21) corresponding to the inclined surface. In the initial state, the sealing surface is in close contact with the inclined surface.

9. The oil filling hole device of the viscous damper cylinder according to claim 8, characterized in that: The sealing portion (21) is a truncated cone-shaped structure formed at the end of the circular tube (23), and the sealing surface is the inclined surface of the sealing portion (21).

10. The oil filling hole device of a viscous damper cylinder according to claim 1, characterized in that: A plurality of oil holes (22) are provided and are evenly distributed on the same circular ring outside the circular tube (23).

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