An underwater rolling guide mechanism

Abstract

The application relates to the technical field of mechanical structures and discloses an underwater rolling guide rail mechanism which comprises a guide rail, a fixed base, a linear bearing and a sealing assembly, the guide rail is movably connected to the inside of the fixed base, the two ends of the guide rail extend outward to the outside of the fixed base, the inside of the fixed base is further provided with the linear bearing and the sealing assembly, the sealing assembly is divided into a first sealing assembly and a second sealing assembly, the first sealing assembly and the second sealing assembly are respectively arranged on the two sides of the linear bearing, a first multilayer wave spring is arranged on the left side of the first sealing piece, a second multilayer wave spring is arranged on the right side of the second sealing piece, hydraulic oil is filled between the first sealing assembly and the second sealing assembly, and the linear bearing is arranged in the hydraulic oil. In the application, the linear bearing is used as guide rail support, and compared with the traditional underwater sliding guide rail, the application has the advantages of small frictional resistance and high transmission precision.

Description

Technical Field

[0001] This invention relates to the field of mechanical structure technology, and more specifically, to an underwater rolling guide mechanism. Background Technology

[0002] Existing underwater guide rails typically employ a sliding support method, with the sliding ring usually made of materials such as polytetrafluoroethylene (PTFE). This results in high frictional resistance and deformation after prolonged immersion, leading to problems like creeping and wear when used in conjunction with a power transmission system, making it difficult to achieve efficient and reliable operation. Traditional linear rolling bearings, when directly applied to seawater, suffer from corrosion, compromising long-term reliable operation.

[0003] Therefore, how to achieve low frictional resistance and high contact accuracy during the movement of underwater guide rails has become a problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide an underwater rolling guide mechanism to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides an underwater rolling guide rail mechanism, comprising: a guide rail, a fixed base, a linear bearing, and a first sealing assembly and a second sealing assembly. The guide rail is sleeved on the fixed base, and both ends of the guide rail extend outward to the outside of the fixed base. The fixed base is further provided with the linear bearing, the first sealing assembly, and the second sealing assembly. The first sealing assembly and the second sealing assembly are respectively located on both sides inside the fixed base. The linear bearing is located between the first sealing assembly and the second sealing assembly, and is sleeved between the guide rail and the fixed base.

[0006] Furthermore, hydraulic oil is filled between the first sealing assembly and the second sealing assembly, and the linear bearing is disposed in the hydraulic oil.

[0007] Furthermore, it also includes a left end cap and a right end cap disposed at both ends of the fixed base, the first sealing component and the second sealing component being located between the left end cap and the right end cap, the left end cap being directly provided with a first multi-layer wave spring and the first sealing component being provided with a second multi-layer wave spring between the right end cap and the second sealing component.

[0008] Furthermore, the first sealing assembly is disposed on the left side of the linear bearing. The first sealing assembly includes a first cover, a sealing ring, an O-ring, a step seal, a second cover, and a locking ring. The sealing ring is disposed between the first cover and the second cover, the O-ring is disposed outside the sealing ring, and the locking ring is disposed outside the sealing ring and the second cover.

[0009] Furthermore, the second sealing assembly is disposed on the right side of the linear bearing. The second sealing assembly includes a third cover, a sealing ring, an O-ring, a step seal, and a fourth cover. The sealing ring is disposed between the third cover and the fourth cover, the O-ring is disposed on the outside of the sealing ring, and the step seal is disposed on the inside of the sealing ring.

[0010] Furthermore, both the left and right end caps are connected to the fixing base by screws.

[0011] Furthermore, the first cover is provided on the right side of the first multi-layer wave spring, and the fourth cover is provided on the left side of the second multi-layer wave spring.

[0012] Furthermore, hydraulic oil is filled between the second cover and the third cover, and the linear bearing is disposed in the hydraulic oil, with the right side of the linear bearing in contact with the third cover.

[0013] Furthermore, the locking ring is composed of two concave semicircular rings, and the sealing ring and the outer side of the second cover are provided with grooves, through which the locking ring achieves locking.

[0014] Furthermore, a retaining ring for the hole is provided on the left side of the linear bearing, and a retaining ring for the shaft is provided on the left side of the guide rail.

[0015] The present invention discloses the following technical effects:

[0016] In this invention, the linear bearing is sleeved on the outside of the guide rail and located inside the fixed base. A first sealing component and a second sealing component are provided inside the fixed base. The linear bearing is sealed by the first sealing component and the second sealing component. By placing the linear bearing between the guide rail and the fixed base, and using the linear bearing as the guide rail support, it has advantages such as low frictional resistance and high transmission accuracy compared with the traditional underwater sliding guide rail. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. 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 creative effort.

[0018] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3This is an assembly diagram of the locking ring, sealing ring, and second cover in this invention;

[0021] The components are as follows: 1. Shaft retaining ring; 2. Guide rail; 3. Left end cover; 4. Screw; 5. First multi-layer wave spring; 6. Fixed base; 7. First cover; 8. Step seal; 9. O-ring seal; 10. Sealing ring; 11. Locking ring; 12. Second cover; 13. Hole retaining ring; 14. Linear bearing; 15. Third cover; 16. Fourth cover; 17. Second multi-layer wave spring; 18. Right end cover. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1-3 As shown, the present invention provides an underwater rolling guide rail mechanism, including: a guide rail 2, a fixed base 6, a linear bearing 14, and a first sealing assembly and a second sealing assembly. The guide rail 2 is sleeved inside the fixed base 6, and both ends of the guide rail 2 extend outward to the outside of the fixed base 6. The fixed base 6 is also provided with the linear bearing 14, the first sealing assembly, and the second sealing assembly. The first sealing assembly and the second sealing assembly are respectively located on both sides of the fixed base 6. The linear bearing 14 is located between the first sealing assembly and the second sealing assembly, and the linear bearing 14 is sleeved between the guide rail 2 and the fixed base 6.

[0025] The guide rail 2 has a diameter of 25mm, and the linear bearing 14 selected is model SKFLBCR25D-2LS. The fixed base 6 and the guide rail 2 are in direct contact with the external water medium, and the guide rail 2 passes through the inner hole of the fixed base 6. A shaft retaining ring 1 is provided on the left side of the guide rail 2. When the shaft retaining ring 1 contacts the left end cover 3, it can realize the linear movement limit of the guide rail 2. The fixed base 6 has a cavity inside. In this invention, the direction of the fixed base 6 closer to the guide rail 2 is the inner side, and the direction away from the guide rail 2 is the outer side.

[0026] The first sealing assembly is located on the left side of the linear bearing 14. The first sealing assembly includes a first cover 7, a sealing ring 10, an O-ring seal 9, a step seal 8, a second cover 12, and a locking ring 11. The sealing ring 10 is located between the first cover 7 and the second cover 12. The O-ring seal 10 is located outside the sealing ring 10 to ensure the sealing of the right cavity of the step seal 8 inside the fixed base 6. There are two step seals 8, both located inside the sealing ring 10, to ensure dynamic sealing when the guide rail 2 reciprocates. The locking ring 11 is located outside the sealing ring 10 and the second cover 12. The locking ring 11 is composed of two concave semicircular rings. The outer sides of the sealing ring 10 and the second cover 12 are provided with grooves. The locking ring 11 cooperates with the grooves to realize the connection and locking between the sealing ring 10 and the second cover 12.

[0027] The second sealing assembly is located on the right side of the linear bearing 14. The second sealing assembly includes a third cover 15, a sealing ring 10, an O-ring seal 9, a step seal 8, and a fourth cover 16. The sealing ring 10 is located between the third cover 15 and the fourth cover 16. The O-ring seal 9 is located outside the sealing ring 10. There are two step seals 8, which are located inside the sealing ring 10 to ensure dynamic sealing during the reciprocating motion of the guide rail 2. The linear bearing 14 releases itself from the third cover 15 after compressing the second multi-layer wave spring 17.

[0028] A left end cover 3 and a right end cover 18 are respectively provided on both sides of the fixed base 6. The left end cover 3 is located on the left side of the fixed base 6, and the right end cover 18 is located on the right side of the fixed base 6, and both are fixed by screws 4. A first multi-layer wave spring 5 is provided on the right side of the left end cover 3. The first multi-layer wave spring 5 is in a compressed state. The right side of the first multi-layer wave spring 5 is a first sealing component. The right side of the first multi-layer wave spring 5 is in contact with the first stop cover 7. A second multi-layer wave spring 17 is provided on the left side of the right end cover 18. The second multi-layer wave spring 17 is in a compressed state. The left side of the second multi-layer wave spring 17 is a second sealing component. The left side of the second multi-layer wave spring 17 is in contact with the fourth stop cover 16. A linear bearing 14 is located on the left side of the second sealing component and is in contact with the third stop cover 15.

[0029] Hydraulic oil is filled between the second cover 12 and the third cover 15. The linear bearing 14 is located in the hydraulic oil, which can prevent contact with water and avoid corrosion of the linear bearing 14.

[0030] The elastic force provided by the first multi-layer wave spring 5 is transmitted to the internal oil through the first sealing component, which can realize the pressure compensation of the internal oil of the fixed base 6 at different water depths. When there is a small amount of oil leakage during the reciprocating motion of the guide rail 2, the first multi-layer wave spring 5 can push the first sealing component to move to the right to achieve automatic compensation.

[0031] The elastic force provided by the second multi-layer wave spring 17 is transmitted to the linear bearing 14 through the second sealing assembly. A retaining ring 13 with a limiting hole is provided on the left side of the linear bearing 14. A retaining ring groove is provided on the inner wall of the fixed base 6. The retaining ring 13 with the hole is embedded in the retaining ring groove, which can realize the axial limiting of the linear bearing 14 inside the fixed base 6.

[0032] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An underwater rolling guide mechanism, characterized in that, include: The guide rail (2), the fixed base (6), the linear bearing (14), and the first sealing assembly and the second sealing assembly are provided inside the fixed base (6). The first sealing assembly and the second sealing assembly are respectively located on both sides inside the fixed base (6). The linear bearing (14) is located between the first sealing assembly and the second sealing assembly. The linear bearing (14) is sleeved between the guide rail (2) and the fixed base (6). Hydraulic oil is filled between the first sealing assembly and the second sealing assembly, and the linear bearing (14) is disposed in the hydraulic oil; It also includes a left end cap (3) and a right end cap (18) disposed at both ends of the fixed base (6), the first sealing component and the second sealing component are located between the left end cap (3) and the right end cap (18), a first multi-layer wave spring (5) is disposed between the left end cap (3) and the first sealing component, and a second multi-layer wave spring (17) is disposed between the right end cap (18) and the second sealing component; The first sealing assembly is disposed on the left side of the linear bearing (14). The first sealing assembly includes a first cover (7), a sealing ring (10), an O-ring (9), a step seal (8), a second cover (12), and a locking ring (11). The sealing ring (10) is disposed between the first cover (7) and the second cover (12). The O-ring (10) is disposed outside the sealing ring (10). The locking ring (11) is disposed outside the sealing ring (10) and the second cover (12). The second sealing assembly is disposed on the right side of the linear bearing (14). The second sealing assembly includes a third cover (15), a sealing ring (10), an O-ring seal (9), a step seal (8), and a fourth cover (16). The sealing ring (10) is disposed between the third cover (15) and the fourth cover (16). The O-ring seal (9) is disposed on the outside of the sealing ring (10), and the step seal (8) is disposed on the inside of the sealing ring (10). The first multi-layer wave spring (5) is provided with the first cover (7) on the right side, and the second multi-layer wave spring (17) is provided with the fourth cover (16) on the left side; The locking ring (11) is composed of two concave semicircular rings. The sealing ring (10) and the outer side of the second cover (12) are provided with grooves. The locking ring (11) is locked through the grooves.

2. The underwater rolling guide mechanism according to claim 1, characterized in that: The left end cap (3) and the right end cap (18) are both connected to the fixed base (6) by screws (4).

3. The underwater rolling guide mechanism according to claim 1, characterized in that: Hydraulic oil is filled between the second cover (12) and the third cover (15).

4. The underwater rolling guide mechanism according to claim 1, characterized in that: The linear bearing (14) is provided with a retaining ring (13) for the hole on the left side, and the guide rail (2) is provided with a retaining ring (1) for the shaft on the left side.

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