Split type generator rotor expansion support for ship transmission shaft

Abstract

The utility model provides a split type generator rotor expansion support for a ship transmission shaft, relates to the technical field of ship power generation, and is mainly used for solving the problem that a locking ring cannot form a complete inner conical surface after being assembled in the prior art. The split type generator rotor expansion support for the ship transmission shaft comprises a power output ring and a locking ring. The locking ring is composed of a split body A and a split body B, two I-shaped grooves are formed between the split body A and the split body B, I-shaped key strips are installed in the I-shaped grooves, and the split body A and the split body B are connected into an annular body through the I-shaped key strips. When the expansion bracket is assembled, the split body A and the split body B can be connected into an annular body through the two I-shaped key strips, so that the influence of the kerf width on the assembly is eliminated, a complete inner conical surface can be formed after the locking ring is assembled, the tightening force applied to the power output ring by the locking ring is improved, and the service life of the power output ring is prolonged. And the output torque of the whole expansion bracket is increased.

Description

TECHNICAL FIELD

[0001] The utility model discloses a split type generator rotor expansion support for ship transmission shaft relates to ship power generation technical field. BACKGROUND

[0002] The ship transmission shaft is thick and long, and usually uses expansion support to output power outward. The expansion support is a keyless coupling structure relying on friction to realize power transmission. Compared with the key structure, the expansion support transmits large torque, and has a protective effect on the long shaft, and will not damage the long shaft when overloaded.

[0003] Referring to the drawings Figure 1 The latest expansion support is mainly composed of a power output ring 1 and a pair of locking rings 2. The locking ring 2 is used to tightly clamp the power output ring 1 on the transmission shaft 3 through taper surface cooperation. In order to facilitate assembly, the power output ring and the locking ring are both split structure. The specific method is to cut the machined power output ring and locking ring into two parts by wire cutting. The existing problem is that due to the existence of cutting gap, the locking ring cannot form a complete inner taper surface after assembly, which reduces the clamping force applied to the power output ring and the output torque of the expansion support. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiencies in the background art, the utility model discloses a split type generator rotor expansion support for ship transmission shaft, which aims to solve the problem that the locking ring cannot form a complete inner taper surface after assembly.

[0005] The utility model adopts the following technical scheme:

[0006] A split type generator rotor expansion support for ship transmission shaft, comprising a power output ring and a locking ring, the locking ring is composed of split body A and split body B, two I-shaped grooves are arranged between the split body A and the split body B, and an I-shaped key strip is installed in the I-shaped groove, and the I-shaped key strip connects the split body A and the split body B into an annular body.

[0007] Further improved technical scheme: the power output ring is composed of split body C and split body D, two I-shaped grooves are arranged between the split body C and the split body D, and an I-shaped key strip is installed in the I-shaped groove, and the I-shaped key strip connects the split body C and the split body D into an annular body.

[0008] Further improved technical scheme: the split surfaces of the power output ring and the split surfaces of the locking ring are staggered.

[0009] Further improved technical scheme: a pair of inclined surfaces are symmetrically arranged at both ends of the I-shaped groove.

[0010] Further improved technical solutions: A threaded hole is arranged axially at the junction of the I-shaped key and the split body A, and a bolt is screwed in the threaded hole.

[0011] Further improved technical solutions: A threaded hole is arranged axially at the junction of the I-shaped key and the split body B, and a bolt is screwed in the threaded hole.

[0012] Further improved technical solutions: The split body A and the split body B are arranged symmetrically about the axial plane of the expansion support.

[0013] Further improved technical solutions: The two I-shaped grooves are arranged symmetrically about the axial plane of the expansion support.

[0014] After implementing the above technical solutions, compared with the background art, the utility model has the beneficial effects that:

[0015] The locking ring of the expansion support is composed of the split body A and the split body B, two I-shaped grooves are arranged between the split body A and the split body B, and I-shaped keys are installed in the I-shaped grooves. During assembly, the split body A and the split body B are connected into an annular body through the two I-shaped keys. In this way, the influence of the slit width on assembly is eliminated, the locking ring can form a complete inner conical surface after assembly, and the tightening force of the locking ring on the power output ring and the output torque of the entire expansion support are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] ATTACHED Figure 1 The structure of the prior art expansion support is shown.

[0017] ATTACHED Figure 2 The overall structure of the expansion support in one perspective is shown.

[0018] ATTACHED Figure 3 The overall structure of the expansion support in another perspective is shown.

[0019] ATTACHED Figure 4 The structure of the split body A and the split body B is shown.

[0020] ATTACHED Figure 5 The installation structure of the I-shaped key is shown.

[0021] ATTACHED Figure 6 The structure of the power output ring is shown.

[0022] In the drawings: 1, power output ring; 1.1, split body C; 1.2, split body D; 2, locking ring; 2.1, split body A; 2.2, split body B; 2.3, I-shaped groove; 2.4, threaded hole; 3, transmission shaft; 4, I-shaped key; 5, bolt. DETAILED DESCRIPTION

[0023] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] A segmented generator rotor expansion bracket for marine drive shafts relates to the field of marine power generation technology and is mainly used to solve the problem in existing technologies where the locking ring cannot form a complete inner conical surface after assembly. The composition and working principle of this expansion bracket are described in detail below.

[0025] See attached document Figure 2 and attached Figure 3 From the appendix Figure 2 and attached Figure 3 As can be seen, this expansion bracket mainly consists of a power output ring 1 and two locking rings 2. The power output ring 1 is located between the two locking rings 2, and the power output ring 1 and the locking rings 2 are connected as one piece by bolts 5. For ease of assembly, both the power output ring 1 and the locking rings 2 adopt a split structure, and the processed power output ring 1 and locking ring 2 are cut into two pieces by wire cutting.

[0026] See attached document Figure 4 , attached Figure 4 The diagram shows the structural schematics of the segmented body A2.1 and segmented body B2.2. (See attached diagram.) Figure 4 As can be seen, the locking ring 2 is composed of a segmented body A2.1 and a segmented body B2.2. Two I-shaped grooves 2.3 are provided between the segmented bodies A2.1 and B2.2, and these two I-shaped grooves 2.3 are symmetrically arranged about the axial plane of the tensioning bracket. In this embodiment, a pair of inclined surfaces are symmetrically provided at both ends of the I-shaped grooves 2.3, and the segmented bodies A2.1 and B2.2 are symmetrically arranged about the axial plane of the tensioning bracket.

[0027] Referring to the drawings Figure 5 , the drawings Figure 5 show the installation structure diagram of the I-shaped key bar 4. As can be seen from the drawings Figure 5 , an I-shaped key bar 4 is installed in the I-shaped slot 2.3, the processing shape of the I-shaped key bar 4 is the same as the shape of the I-shaped slot 2.3, and the split body A2.1 and the split body B2.2 are connected into an annular body by two I-shaped key bars 4 during assembly. In this way, the influence of the slit width on assembly is eliminated, so that the locking ring 2 can form a complete inner conical surface after assembly, thereby improving the tightening force of the locking ring 2 on the power output ring 1 and the output torque of the entire expansion support.

[0028] In order to prevent the I-shaped key bar 4 from falling off during work, a threaded hole 2.4 is provided axially at the junction of the I-shaped key bar 4 and the split body A2.1, and a bolt 5 is screwed in the threaded hole 2.4. Similarly, a threaded hole 2.4 is provided axially at the junction of the I-shaped key bar 4 and the split body B2.2, and a bolt 5 is screwed in the threaded hole 2.4.

[0029] Referring to the drawings Figure 6 , the drawings Figure 6 show the structure diagram of the power output ring 1. Similarly, the power output ring 1 is composed of a split body C1.1 and a split body D1.2, two I-shaped slots 2.3 are provided between the split body C1.1 and the split body D1.2, and I-shaped key bars 4 are installed in the I-shaped slots 2.3, and the split body C1.1 and the split body D1.2 are connected into an annular body by two I-shaped key bars 4 during assembly.

[0030] In order to disperse stress, the split surfaces of the power output ring 1 and the split surfaces of the locking ring 2 are arranged at 90° staggered.

[0031] It is worth noting that the contents not described in detail in the above embodiments are prior art. It is also worth noting that any addition, replacement and improvement made by those skilled in the art under the structure and principle of the present application should be included in the protection scope of the present application.

Claims

1. A split generator rotor expansion bracket for a marine drive shaft, comprising a power output ring and a locking ring, characterized in that: The locking ring is composed of a split body A and a split body B, two I-shaped grooves are arranged between the split body A and the split body B, and I-shaped key strips are installed in the I-shaped grooves, and the I-shaped key strips connect the split body A and the split body B into an annular body.

2. A split generator rotor expansion bracket for a marine drive shaft as claimed in claim 1, characterised in that: The power output ring is composed of a split body C and a split body D, two I-shaped grooves are arranged between the split body C and the split body D, and I-shaped key strips are installed in the I-shaped grooves, and the I-shaped key strips connect the split body C and the split body D into an annular body.

3. A split generator rotor expansion bracket for a marine drive shaft as claimed in claim 1, characterised in that: The split surfaces of the power output ring and the split surfaces of the locking ring are staggered.

4. A split generator rotor expansion bracket for a marine drive shaft as claimed in claim 1, characterized in that: A pair of inclined surfaces are symmetrically arranged at two ends of the I-shaped groove.

5. A split generator rotor expansion bracket for a marine drive shaft as claimed in claim 1, characterized in that: A threaded hole is arranged axially at the junction of the I-shaped key strip and the split body A, and a bolt is screwed in the threaded hole.

6. A split generator rotor expansion bracket for a marine drive shaft as claimed in claim 1 or 5 wherein: A threaded hole is arranged axially at the junction of the I-shaped key strip and the split body B, and a bolt is screwed in the threaded hole.

7. A split generator rotor expansion bracket for a marine drive shaft as claimed in claim 1, characterized in that: The split body A and the split body B are symmetrically arranged about the axial plane of the expansion support.

8. A split generator rotor expansion bracket for a marine drive shaft as defined in claim 1 wherein: The two I-shaped grooves are symmetrically arranged about the axial plane of the expansion support.

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