An anti-torsion shaft deformation connection structure used when hoisting a through-shaft gear set

Abstract

The present invention relates to the field of ship gear transmission device repair, and specifically to an anti-torsion shaft deformation connection structure used when lifting a through-shaft structure gear set. In order to solve the problem that the gap between the large and small gears may cause the torsion shaft to bend and deform under stress when lifting the large and small gears and then lifting the gear set as a whole without disassembling the torsion shaft, the connection structure includes two half rings, and the half rings include an outer half ring and an inner half ring; the two half rings are symmetrically arranged, and each end of a half ring is connected to the other half ring by at least one bolt. The outer half rings of the two half rings are spliced ​​together to form an outer ring, and the inner wall of the outer ring is sleeved on the second-level small gear and the first-level large gear. The inner half rings of the two half rings are spliced ​​together to form an inner ring, and one side wall of the inner ring is clearance-matched with the second-level small gear, and the other side wall of the inner ring is clearance-matched with the first-level large gear. By connecting the half rings of the split upper and lower structures, the first-level large gear and the second-level small gear are combined into a whole, which effectively solves the practical problem of gear lifting.

Description

Technical Field

[0001] The present invention relates to the field of ship gear transmission device repair, and in particular to an anti-torsion shaft deformation connection structure used when hoisting a gear set with a through-shaft structure. Background Art

[0002] Currently, large domestic ship power transmission systems widely use a two-stage reduction power branch transmission. This transmission type features a through-shaft structure, where a torque shaft connects the first-stage large gear and the second-stage small gear into a single unit. This gear transmission system has the remarkable advantages of high power transmission and small size and weight.

[0003] In order to prevent the torsion shaft from bending and deforming due to stress during the maintenance and disassembly process of the gear transmission device of this structure, the torsion shaft needs to be pulled out from the inner hole of the gear shaft before the large and small gears can be removed. The disassembly process involves the disassembly of the front and rear connections of the torsion shaft. Due to the space limitations on the ship, the disassembly process is time-consuming and difficult, and is prone to the risk of damage and falling of parts. In order to avoid the above problems, the large and small gears can be lifted without removing the torsion shaft, and then the gear set can be lifted as a whole. However, when lifting the gear set, the gap between the large and small gears may cause the torsion shaft to bend and deform due to stress. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that when lifting the large and small gears and then lifting the gear set as a whole without disassembling the torsion shaft, the gap between the large and small gears may cause the torsion shaft to bend and deform under the force. The present invention proposes an anti-torsion shaft deformation connection structure used when lifting the through-shaft structure gear set.

[0005] A through-shaft gear set with an anti-torsion shaft deformation connection structure used during hoisting, the through-shaft gear set comprising a coupling, a second-stage pinion, a torsion shaft, and a first-stage gear; the coupling, the second-stage pinion, and the first-stage gear are sequentially mounted on the torsion shaft from front to back, the coupling and the second-stage pinion are detachably connected, the torsion shaft and the first-stage gear are detachably connected, and a gap is left between the second-stage pinion and the first-stage gear;

[0006] The connecting structure includes two half rings, which include an outer half ring and an inner half ring; the outer half ring and the inner half ring are arranged as one body, the inner half ring is located in the inner middle part of the outer half ring, the two half rings are arranged symmetrically, each end of a half ring is connected to the other half ring by at least one bolt, the outer half rings of the two half rings are spliced ​​together to form an outer ring, the inner wall of the outer ring is sleeved on the stage II small gear and the stage I large gear, the inner half rings of the two half rings are spliced ​​together to form an inner ring, one side wall of the inner ring is clearance-matched with the stage II small gear, and the other side wall of the inner ring is clearance-matched with the stage I large gear.

[0007] Furthermore, when the connecting structure is installed to the through-shaft structure gear set, the gap between the second-stage small gear and the adjacent side wall b of the inner ring and the gap between the first-stage large gear and the adjacent side wall b of the inner ring are both 1-2 mm.

[0008] Furthermore, when the connecting structure is installed on the through-shaft gear set, the journals of the second-stage small gear and the first-stage large gear are both in contact with the inner wall a of the outer ring.

[0009] Furthermore, each end of one half ring is connected to the other half ring via a bolt.

[0010] Furthermore, the half ring is made of stainless steel.

[0011] Beneficial effects:

[0012] This invention features a simple structure, rational design, easy installation, low cost, economical applicability, and ease of large-scale application. By connecting the split upper and lower halves, the primary gear and secondary gear are integrated into a single unit, effectively solving the practical problem of gear lifting. Its simple, compact, and reliable connection meets the requirements for gear set lifting. Furthermore, this solution offers a solution for inspecting and repairing gear sets with through-shaft structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic front view and cross-sectional view of an anti-torsion shaft deformation connection structure used when hoisting a through-shaft gear set according to the present invention;

[0014] Figure 2 It is a side cross-sectional schematic diagram of an anti-torsion shaft deformation connection structure used when hoisting a through-shaft structure gear set of the present invention;

[0015] Figure 3 is a schematic diagram of a shaft-through structure gear set of the present invention;

[0016] Figure 4 This is a schematic diagram of the use of an anti-torsion shaft deformation connection structure used when hoisting a through-shaft structure gear set according to the present invention;

[0017] In the figure: 1. Coupling; 2. Level II small gear; 3. Torque shaft; 4. Level I large gear; 5. Half rings; 5-1. Including outer half ring; 5-2. Inner half ring; 6. Bolt; A. Lifting rope. DETAILED DESCRIPTION

[0018] Specific embodiment 1: A through-shaft structure gear set used for hoisting an anti-torsion shaft deformation connection structure, the through-shaft structure gear set includes a coupling 1, a second-stage pinion 2, a torsion shaft 3 and a first-stage large gear 4; the coupling 1, the second-stage pinion 2 and the first-stage large gear 4 are sequentially mounted on the torsion shaft 3 from front to back, the coupling 1 and the second-stage pinion 2 are detachably connected, the torsion shaft 3 and the first-stage large gear 4 are detachably connected, and a gap is left between the second-stage pinion 2 and the first-stage large gear 4;

[0019] The connecting structure includes two half rings 5, and the half rings 5 ​​include an outer half ring 5-1 and an inner half ring 5-2; the outer half ring 5-1 and the inner half ring 5-2 are arranged as a whole, and the inner half ring 5-2 is located in the inner middle part of the outer half ring 5-1. The two half rings 5 ​​are symmetrically arranged, and each end of a half ring 5 is connected to the other half ring 5 by at least one bolt 6. The outer half rings 5-1 of the two half rings 5 ​​are spliced ​​to form an outer ring, and the inner wall of the outer ring is sleeved on the second-level pinion 2 and the first-level large gear 4. The inner half rings 5-2 of the two half rings 5 ​​are spliced ​​to form an inner ring, and one side wall of the inner ring is clearance-fitted with the second-level pinion 2, and the other side wall of the inner ring is clearance-fitted with the first-level large gear 4.

[0020] In this embodiment: one side wall of the inner ring is in clearance fit with the stage II pinion, and the other side wall of the inner ring is in clearance fit with the stage I gear, so that the inner ring can be inserted between the stage II pinion and the stage I gear easily. The inner ring almost fills the gap between the stage II pinion and the stage I gear, preventing the stage II pinion and the stage I gear from bending the torsion shaft. The outer ring clamps the stage II pinion and the stage I gear at the same time to prevent the outer ring and the torsion shaft from guiding the stage II pinion and the stage I gear at the same time when the stage II pinion and the stage I gear are lifted, preventing the stage II pinion and the stage I gear from bending the torsion shaft.

[0021] Specific embodiment 2: An anti-torsion shaft deformation connection structure used when hoisting a through-shaft structure gear set. When the connection structure is installed to the through-shaft structure gear set, the gap between the second-stage small gear 2 and the adjacent side wall b of the inner ring and the gap between the first-stage large gear 4 and the adjacent side wall b of the inner ring are both 1-2mm.

[0022] In this embodiment: when the connecting structure is installed to the through-shaft structure gear set, the gap between the second-stage pinion and the adjacent side wall of the inner ring and the gap between the first-stage large gear and the adjacent side wall b of the inner ring are both 1-2 mm, which facilitates the insertion of the inner ring between the second-stage pinion and the first-stage large gear. The inner ring almost fills the gap between the second-stage pinion and the first-stage large gear, preventing the second-stage pinion and the first-stage large gear from bending the torsion shaft.

[0023] Other implementations are the same as the first specific implementation.

[0024] Specific embodiment three: An anti-torsion shaft deformation connection structure used when hoisting a through-shaft structure gear set. When the connection structure is installed to the through-shaft structure gear set, the shaft necks of the second-stage small gear 2 and the first-stage large gear 4 are both in contact with the inner wall a of the outer ring.

[0025] In this embodiment: when the connecting structure is installed to the through-shaft structure gear set, the shaft necks of the second-level pinion and the first-level large gear are both in contact with the inner wall a of the outer ring, and the outer ring clamps the second-level pinion and the first-level large gear at the same time to prevent the outer ring and the torque shaft from guiding the second-level pinion and the first-level large gear at the same time when the second-level pinion and the first-level large gear are lifted to prevent the second-level pinion and the first-level large gear from bending the torsion shaft.

[0026] Other implementations are the same as the first specific implementation.

[0027] Specific embodiment 4: An anti-torsion shaft deformation connection structure used when hoisting a through-shaft gear set, each end of a half ring 5 is connected to the other half ring 5 by a bolt 6.

[0028] In this embodiment, each end of a half ring is connected to the other half ring by a bolt, and is fixed by only one bolt, so the installation is quick.

[0029] Other implementations are the same as the first specific implementation.

[0030] Specific embodiment 5: An anti-torsion shaft deformation connection structure used when hoisting a through-shaft structure gear set, the half ring 5 is made of stainless steel.

[0031] In this embodiment, the half ring is made of stainless steel, which is low in cost, durable, very suitable, and has good wear resistance.

[0032] Other implementations are the same as the first specific implementation.

Claims

1. A torsion shaft deformation prevention connection structure used when hoisting a through-shaft structure gear set, the through-shaft structure gear set comprising a coupling (1), a second-stage pinion (2), a torsion shaft (3) and a first-stage gear (4); the coupling (1), the second-stage pinion (2) and the first-stage gear (4) are sequentially mounted on the torsion shaft (3) from front to back, the coupling (1) and the second-stage pinion (2) are detachably connected, the torsion shaft (3) and the first-stage gear (4) are detachably connected, and a gap is left between the second-stage pinion (2) and the first-stage gear (4); Its characteristics are: The connection structure comprises two half rings (5), wherein the half rings (5) comprise an outer half ring (5-1) and an inner half ring (5-2); the outer half ring (5-1) and the inner half ring (5-2) are integrally arranged, the inner half ring (5-2) is located in the inner middle of the outer half ring (5-1), the two half rings (5) are symmetrically arranged, each end of one half ring (5) is connected to the other half ring (5) by at least one bolt (6), the outer half rings (5-1) of the two half rings (5) are spliced ​​together to form an outer ring, the inner wall of the outer ring is sleeved on the second-stage small gear (2) and the first-stage large gear (4), the inner half rings (5-2) of the two half rings (5) are spliced ​​together to form an inner ring, one side wall of the inner ring is clearance-matched with the second-stage small gear (2), and the other side wall of the inner ring is clearance-matched with the first-stage large gear (4).

2. The anti-torsion shaft deformation connection structure used in the hoisting of a through-shaft gear set according to claim 1, characterized in that: When the connecting structure is installed on the through-shaft gear set, the gap between the second-stage small gear (2) and the adjacent side wall b of the inner ring and the gap between the first-stage large gear (4) and the adjacent side wall b of the inner ring are both 1-2 mm.

3. The anti-torsion shaft deformation connection structure used in the hoisting of a through-shaft gear set according to claim 1, characterized in that: When the connecting structure is installed on the through-shaft gear set, the journals of the second-stage small gear (2) and the first-stage large gear (4) are both fitted with the inner wall a of the outer ring.

4. The anti-torsion shaft deformation connection structure used in the hoisting of a through-shaft gear set according to claim 1, characterized in that: Each end of one half ring (5) is connected to the other half ring (5) by a bolt (6).

5. The anti-torsion shaft deformation connection structure used in the hoisting of a through-shaft gear set according to claim 1, characterized in that: The half ring (5) is made of stainless steel.

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