Marine gear with axial locking mechanism

Abstract

The marine gear with the axial locking mechanism comprises a transmission shaft, an outer spline and a transmission gear body, inner key grooves are formed in the inner circumference of the transmission gear body in an array mode, a connecting ring groove is formed in one end of the transmission gear body, and an outer protection ring and an inner protection ring are installed at the other end of the transmission gear body; an inner buckling groove is formed in the surface of the inner protection ring, a locking mechanism is arranged between the outer protection ring and the inner protection ring, and a positioning mechanism is arranged on the surface of the transmission shaft. When the outer spline on the outer protection ring enters the inner key groove, the outer spline extends to the dislocation groove through the inner top ring on the outer ring to limit the transmission shaft, the buckle pin is clamped into the inner buckle groove, and then the buckle pin and the outer ring are fixed and locked in the mode that the outer abutting ring is in threaded connection with the connecting groove to abut against the buckle pin and the outer ring.

Description

Technical Field

[0001] The utility model relates to the technical field of marine gears, in particular to a marine gear with an axial locking mechanism. Background Art

[0002] The Chinese patent "CN201821541170.0 A axial fixing structure for clutch gears of marine gearboxes" discloses a round nut locking device for mechanical transmission, which adopts a round nut with a thin-walled ring axially away from the clamping end, a slot on the shaft, and a limit and anti-loosening structure for riveting and locking. It can be reliably locked and accurately limited, but because the thin-walled ring needs to be knocked out when it is disassembled after riveting, the thread on the shaft will be damaged after being knocked out, which seriously affects the assembly of the nut and the shaft and the speed of disassembly, and may even damage the shaft and make it impossible to use it again.

[0003] Therefore, we have made improvements to this and proposed a marine gear with an axial locking mechanism. Utility Model Content

[0004] The utility model aims to solve the problem that the structure of the shaft connection is damaged and the disassembly speed is affected during the disassembly process.

[0005] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0006] The invention discloses a marine gear with an axial locking mechanism to improve the above problems.

[0007] The specific application is as follows:

[0008] It includes a transmission shaft, an external spline and a transmission gear. The internal circumferential array of the transmission gear is provided with an internal keyway. One end of the transmission gear is provided with a connecting ring groove. The other end of the transmission gear is installed with an outer protective ring and an inner protective ring. The surface of the inner protective ring is provided with an inner buckle groove. A locking mechanism is provided between the outer protective ring and the inner protective ring. The surface of the transmission shaft is provided with a positioning mechanism.

[0009] When the external spline on the outer protective ring enters into the inner keyway and extends to the offset groove through the inner top ring on the external ring, the transmission shaft is limited, and the buckle pin is inserted into the inner buckle groove. Then, the buckle pin and the external ring are fixed and locked by the outer retaining ring and the connecting groove thread connection.

[0010] As a preferred embodiment of the marine gear with an axial locking mechanism provided by the utility model, the locking mechanism includes an external ring and an external retaining ring, a connecting groove is formed between the external retaining ring and the inner retaining ring, a buckle pin is provided on the surface of the external ring, the buckle pin is rotatably connected to the external ring through a connecting shaft, the buckle pin is clamped in the inner buckle groove, and the connecting groove is threadedly connected to the external retaining ring.

[0011] As a preferred embodiment of the marine gear with an axial locking mechanism provided by the utility model, a gasket groove is provided on the surface of the inner protective ring, a sealing ring is placed on the surface of the gasket groove, and a bearing is placed inside the inner protective ring at one end of the inner keyway.

[0012] As a preferred embodiment of the marine gear with an axial locking mechanism provided by the utility model, an offset groove is provided at one end of the inner keyway, an inner top ring is installed inside the outer ring, and the inner top ring extends to the offset groove.

[0013] As a preferred embodiment of the marine gear with axial locking mechanism provided by the utility model, the positioning mechanism includes an external key and an internal limit ring, an internal groove is formed inside the internal limit ring, and the external key is plugged into the internal groove.

[0014] As a preferred embodiment of the marine gear with an axial locking mechanism provided by the utility model, the outer surface of the inner limit ring is rotatably connected to an external ring, the side surface of the transmission gear is provided with a connecting ring groove, and the external ring is threadedly connected to the connecting ring groove.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] When the external spline on the outer protective ring enters into the inner keyway and extends to the offset groove through the inner top ring on the external ring, the transmission shaft is limited, and the buckle pin is inserted into the inner buckle groove. Then, the buckle pin and the external ring are fixed and locked by the outer retaining ring and the connecting groove thread connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a marine gear with an axial locking mechanism provided in this application;

[0018] Figure 2 A schematic diagram of the structure of an external ring of a marine gear with an axial locking mechanism provided in the present application;

[0019] Figure 3 A schematic structural diagram of an outer protective ring of a marine gear with an axial locking mechanism provided in the present application;

[0020] Figure 4 A schematic structural diagram of the inner keyway of a marine gear with an axial locking mechanism provided in the present application.

[0021] Indicated in the figure:

[0022] 1. Transmission shaft; 11. External key; 12. External spline; 13. Internal limit ring; 14. Internal groove; 15. External ring; 2. External protective ring; 21. Transmission gear; 22. Connecting ring groove; 23. Internal key groove; 24. Internal protective ring; 25. Gasket groove; 26. Connecting groove; 27. Internal buckle groove; 28. Offset groove; 3. Bearing; 4. Sealing ring; 5. Inner top ring; 6. External ring; 7. Buckle pin; 8. External abutment ring. DETAILED DESCRIPTION

[0023] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0024] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] As described in the background art, the disassembly process may cause damage to the structure of the shaft connection and affect the disassembly speed.

[0029] In order to solve this technical problem, the utility model provides a marine gear with an axial locking mechanism.

[0030] Specifically, please refer to Figure 1-4 The marine gear with an axial locking mechanism specifically includes: a transmission shaft 1, an external spline 12 and a transmission gear 21, the internal circumferential array of the transmission gear 21 is provided with an internal keyway 23, one end of the transmission gear 21 is provided with a connecting ring groove 22, the other end of the transmission gear 21 is installed with an outer protective ring 2 and an inner protective ring 24, the surface of the inner protective ring 24 is provided with an inner buckle groove 27, a locking mechanism is provided between the outer protective ring 2 and the inner protective ring 24, and a positioning mechanism is provided on the surface of the transmission shaft 1.

[0031] When the external spline 12 on the outer protective ring 2 enters into the inner keyway 23 and extends to the offset groove 28 through the inner top ring 5 on the external ring 6, the transmission shaft 1 is limited, and the buckle pin 7 is inserted into the inner buckle groove 27. Then, the buckle pin 7 and the external ring 6 are fixed and locked by the outer support ring 8 and the connecting groove 26.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Example 1

[0036] Please refer to Figure 1-4 A marine gear with an axial locking mechanism comprises a transmission shaft 1, an external spline 12 and a transmission gear 21, wherein an inner keyway 23 is provided in an inner circumferential array of the transmission gear 21, a connecting ring groove 22 is provided at one end of the transmission gear 21, an outer guard ring 2 and an inner guard ring 24 are installed at the other end of the transmission gear 21, an inner buckle groove 27 is provided on the surface of the inner guard ring 24, a locking mechanism is provided between the outer guard ring 2 and the inner guard ring 24, and a positioning mechanism is provided on the surface of the transmission shaft 1. The locking mechanism comprises an external ring 6 and an external abutment ring 8, a connecting groove 26 is formed between the outer guard ring 2 and the inner guard ring 24, a buckle pin 7 is provided on the surface of the external ring 6, the buckle pin 7 is rotatably connected to the external ring 6 through a connecting shaft, the buckle pin 7 is engaged with the inner buckle groove 27, and the connecting groove 26 is threadedly connected to the external abutment ring 8.

[0037] During the implementation process, when the external spline 12 on the outer protective ring 2 enters into the inner keyway 23, it extends to the offset groove 28 through the inner top ring 5 on the external ring 6 to limit the transmission shaft 1, and the buckle pin 7 is inserted into the inner buckle groove 27. Then, the outer support ring 8 is threadedly connected with the connecting groove 26 to fix and lock the buckle pin 7 and the external ring 6.

[0038] Example 2

[0039] The surface of the inner protective ring 24 is provided with a gasket groove 25, and a sealing ring 4 is placed on the surface of the gasket groove 25. The inner part of the inner protective ring 24 is located at one end of the inner key groove 23 and a bearing 3 is placed. An offset groove 28 is opened at one end of the inner key groove 23, and an inner top ring 5 is installed inside the outer ring 6, and the inner top ring 5 extends to the offset groove 28.

[0040] During the implementation process, the sealing ring 4 is placed on the gasket groove 25, and the bearing 3 is placed in the gap between the offset groove 28 and the gasket groove 25. When the buckle pin 7 on the external ring 6 is inserted into the inner buckle groove 27, the inner top ring 5 will extend to the offset groove 28 to block the external spline 12 from limiting it.

[0041] Example 3

[0042] The positioning mechanism includes an external key 11 and an internal limit ring 13. An internal groove 14 is provided inside the internal limit ring 13, and the external key 11 is plugged into the internal groove 14. An external ring 15 is rotatably connected to the outer surface of the internal limit ring 13, and a connecting ring groove 22 is provided on the side surface of the transmission gear 21, and the external ring 15 is threadedly connected to the connecting ring groove 22.

[0043] During the implementation process, when the transmission shaft 1 extends into the transmission gear 21, the external spline 12 enters the internal keyway 23, and then the internal limit ring 13 is placed on the transmission shaft 1, the internal groove 14 is connected to the external key 11, the external ring 15 is blocked by the internal limit ring 13, and the external ring 15 is threadedly connected to the connecting ring groove 22.

[0044] During the installation process, the transmission shaft 1 is inserted into the transmission gear 21, and the external spline 12 enters the internal keyway 23. Then the internal limit ring 13 is placed on the transmission shaft 1, the internal groove 14 is connected to the external key 11, and the external ring 15 is blocked by the internal limit ring 13. The external ring 15 is threadedly connected to the connecting ring groove 22. Then the bearing 3 is placed on the gap between the dislocation groove 28 and the gasket groove 25, and the sealing ring 4 is placed on the gasket groove 25. When the buckle pin 7 on the external ring 6 is inserted into the internal buckle groove 27, the inner top ring 5 will extend to the dislocation groove 28, blocking the external spline 12 from limiting it, and the buckle pin 7 is inserted into the internal buckle groove 27. Then, the external support ring 8 is threadedly connected to the connecting groove 26 to fix and lock the buckle pin 7 and the external ring 6.

[0045] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A marine gear with an axial locking mechanism, comprising a transmission shaft (1), an external spline (12) and a transmission gear (21), characterized in that: The transmission gear (21) is provided with an inner keyway (23) in an inner circumferential array, one end of the transmission gear (21) is provided with a connecting ring groove (22), the other end of the transmission gear (21) is provided with an outer protective ring (2) and an inner protective ring (24), the surface of the inner protective ring (24) is provided with an inner buckle groove (27), a locking mechanism is provided between the outer protective ring (2) and the inner protective ring (24), and a positioning mechanism is provided on the surface of the transmission shaft (1).

2. A marine gear with an axial locking mechanism according to claim 1, characterized in that: The locking mechanism comprises an external ring (6) and an external retaining ring (8); a connecting groove (26) is formed between the external retaining ring (2) and the internal retaining ring (24); a buckle pin (7) is provided on the surface of the external ring (6); the buckle pin (7) is rotatably connected to the external ring (6) via a connecting shaft; the buckle pin (7) is snap-fitted with the internal buckle groove (27); and the connecting groove (26) is threadedly connected to the external retaining ring (8).

3. A marine gear with an axial locking mechanism according to claim 2, characterized in that: A gasket groove (25) is provided on the surface of the inner protective ring (24), a sealing ring (4) is placed on the surface of the gasket groove (25), and a bearing (3) is placed at one end of the inner key groove (23) inside the inner protective ring (24).

4. A marine gear with an axial locking mechanism according to claim 3, characterized in that: An offset groove (28) is formed at one end of the inner key groove (23), an inner top ring (5) is installed inside the outer ring (6), and the inner top ring (5) extends to the offset groove (28).

5. A marine gear with an axial locking mechanism according to claim 4, characterized in that: The positioning mechanism comprises an external key (11) and an internal limit ring (13); an internal groove (14) is provided inside the internal limit ring (13); and the external key (11) is plugged into the internal groove (14).

6. A marine gear with an axial locking mechanism according to claim 5, characterized in that: The outer surface of the inner limit ring (13) is rotatably connected to an outer connecting ring (15), a connecting ring groove (22) is provided on the side surface of the transmission gear (21), and the outer connecting ring (15) is threadedly connected to the connecting ring groove (22).

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