Torsion shaft deformation preventing connecting structure used during hoisting of shaft penetrating structure gear set

Abstract

The invention relates to the field of ship gear transmission device repairing, in particular to a torsion shaft deformation preventing connecting structure used during shaft penetrating structure gear set hoisting, and aims to achieve the purpose that under the condition that a torsion shaft is not disassembled, a large gear and a small gear are hoisted, and then the whole gear set is hoisted. In order to solve the problem that a torsion shaft is stressed to be bent and deformed due to a gap between a large gear and a small gear, a connecting structure comprises two semi-rings, and each semi-ring comprises an outer semi-ring and an inner semi-ring; the two semi-rings are symmetrically arranged, each end of one semi-ring is connected with the other semi-ring through at least one bolt, the outer semi-rings of the two semi-rings are spliced to form an outer ring, the inner wall of the outer ring is arranged on the II-stage pinion and the I-stage gearwheel in a sleeving mode, the inner semi-rings of the two semi-rings are spliced to form an inner ring, one side wall of the inner ring is in clearance fit with the II-stage pinion, and the other side wall of the inner ring is in clearance fit with the I-stage gearwheel. The other side wall of the inner ring is in clearance fit with the I-level large gear, the I-level large gear and the II-level small gear are combined into a whole by connecting the half rings of the split upper half structure and the split lower half structure, and the actual problem of gear lifting is effectively solved.

Description

Technical Field

[0001] The 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 shaft-penetrating structure gear set. Background Art

[0002] At present, the power transmission device of large domestic ships widely uses the two-stage reduction power branch transmission form. The structural feature of this transmission form is that it has a through-shaft structure, that is, a torque shaft is used to connect the first-stage large gear and the second-stage small gear into a whole. This gear transmission device has the remarkable characteristics of large 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 component damage and falling. 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 the gap between the large and small gears may cause the torsion shaft to bend and deform due to the force when lifting the large and small gears and then lifting the gear set as a whole without disassembling the torsion shaft. The present invention proposes an anti-torsion shaft deformation connection structure used when lifting the through-shaft structure gear set.

[0005] A torsion shaft deformation prevention connection structure used when hoisting a through-shaft structure gear set, the through-shaft structure gear set comprises a coupling, a second-level pinion, a torsion shaft and a first-level gear; the coupling, the second-level pinion and the first-level gear are sequentially mounted on the torsion shaft from front to back, the coupling and the second-level pinion are detachably connected, the torsion shaft and the first-level gear are detachably connected, and a gap is left between the second-level pinion and the first-level 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 integrally, 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 level II small gear and the level 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 level II small gear, and the other side wall of the inner ring is clearance-matched with the level 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 to the through-shaft structure 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 a half ring is connected to the other half ring via a bolt.

[0010] Furthermore, the half rings are made of stainless steel material.

[0011] Beneficial effects:

[0012] The present invention has a simple structure, reasonable design, easy installation, low cost, economical and applicable, and easy to promote and apply on a large scale. By connecting the half rings of the upper and lower structures of the split body, 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. Its connection structure is simple, compact, and reliable, and can meet the requirements of gear set lifting. At the same time, this solution is also one of the means to solve the inspection and repair of the through-shaft structure gear set. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a front cross-section of an anti-torsion shaft deformation connection structure used when hoisting a shaft-through structure gear set of 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 shaft-through 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 It is a schematic diagram of the use of an anti-torsion shaft deformation connection structure used when hoisting a shaft-through structure gear set of 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 implementation method 1: A torsion shaft deformation prevention connection structure used when hoisting a through-shaft structure gear set, the through-shaft structure gear set includes a coupling 1, a second-level pinion 2, a torsion shaft 3 and a first-level large gear 4; the coupling 1, the second-level pinion 2 and the first-level large gear 4 are sequentially mounted on the torsion shaft 3 from front to back, the coupling 1 and the second-level pinion 2 are detachably connected, the torsion shaft 3 and the first-level large gear 4 are detachably connected, and a gap is left between the second-level pinion 2 and the first-level 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 integrally, and the inner half ring 5-2 is located in the inner middle part of the outer half ring 5-1, and 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, and 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, and 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-matched with the second-level pinion 2, and the other side wall of the inner ring is clearance-matched with the first-level large gear 4.

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

[0021] Specific implementation method 2: A torsional shaft deformation prevention 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 1-2mm, which facilitates the inner ring to be inserted 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 torque shaft.

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

[0024] Specific implementation method three: A torsional shaft deformation prevention 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 journals 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 stage II pinion and the stage I large gear are both in contact with the inner wall a of the outer ring, and the outer ring clamps the stage II pinion and the stage I large gear at the same time to prevent the stage II pinion and the stage I large gear from being lifted. The outer ring and the torque shaft guide the stage II pinion and the stage I large gear at the same time to prevent the stage II pinion and the stage I large gear from bending the torque shaft.

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

[0027] Specific implementation method 4: An anti-torsion shaft deformation connection structure used when hoisting a shaft-through structure 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 implementation method 5: An anti-torsion shaft deformation connection structure used when hoisting a shaft-through structure gear set, the half ring 5 is made of stainless steel material.

[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-level pinion (2), a torsion shaft (3) and a first-level gear (4); the coupling (1), the second-level pinion (2) and the first-level gear (4) are sequentially mounted on the torsion shaft (3) from front to back, the coupling (1) and the second-level pinion (2) are detachably connected, the torsion shaft (3) and the first-level gear (4) are detachably connected, and a gap is left between the second-level pinion (2) and the first-level gear (4); Features: 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 at the inner middle part 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 assembled to form an outer ring, the inner wall of the outer ring is sleeved on the second-level pinion (2) and the first-level gear (4), the inner half rings (5-2) of the two half rings (5) are assembled to form an inner ring, one side wall of the inner ring is clearance-matched with the second-level pinion (2), and the other side wall of the inner ring is clearance-matched with the first-level gear (4).

2. According to claim 1, the anti-torsion shaft deformation connection structure used in the hoisting of the shaft-through structure gear set is characterized by: When the connecting structure is installed on 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 1-2 mm.

3. The anti-torsion shaft deformation connection structure used in the hoisting of the shaft-through structure gear set according to claim 1, characterized in that: When the connection structure is installed on the shaft-penetrating gear set, the journals 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.

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

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