Marine engine shafting torsional vibration damper shell with double-layer structure

Abstract

The utility model discloses a marine engine shafting torsional vibration damper shell with a double-layer structure, which comprises an inner shell and an outer shell, and the inner shell is clamped on the outer shell; four positioning insertion blocks are installed on the outer side of the inner shell at equal intervals in a surrounding mode, positioning insertion openings matched with the positioning insertion blocks are formed in the positions, corresponding to the positioning insertion blocks, of the outer shell, connecting clamping grooves communicated with the positioning insertion openings are symmetrically formed in the two sides, corresponding to the positioning insertion openings, of the outer shell, and a fixing shaft is fixedly installed in one connecting clamping groove. The marine engine shafting torsional vibration damper shell of the double-layer structure is reasonable in structural design, the double-layer type torsional vibration damper shell design is adopted, so that the marine engine shafting torsional vibration damper shell has high strength and is not prone to deformation or abrasion, even if one of the outer shell and the inner shell is damaged, rapid disassembly and replacement can be achieved, and the service life of the marine engine shafting torsional vibration damper shell is prolonged. And therefore, the service life is longer, the use effect is better, and popularization and use are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of torsional vibration dampers, in particular to a torsional vibration damper housing of a marine engine shaft system with a double-layer structure. Background Art

[0002] Torsional vibration dampers can be divided into two categories according to the damping medium used: viscous (silicone oil) torsional vibration dampers and (rubber) elastic torsional vibration dampers. Their functional basic structure consists of three parts (components): a housing or a hub, a damping element (silicone oil or rubber) and an inertia wheel with a certain moment of inertia. The housing or the hub is connected to the front end of the engine crankshaft that needs to be damped. Torsional vibration will inevitably occur when the engine crankshaft is running, and the damping element causes the inertia wheel and the housing or the hub to produce a movement that is opposite to the torsional vibration phase, thereby achieving the purpose of offsetting or weakening the torsional vibration of the engine shaft system.

[0003] At present, most of the existing marine engine shaft torsional vibration damper housings adopt a single-layer structure, which does not have high strength and is prone to deformation or wear, affecting the service life and use effect, and increasing the cost of use. For this reason, we propose a marine engine shaft torsional vibration damper housing with a double-layer structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a double-layer structure of a marine engine shaft system torsional vibration damper housing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-layer structure marine engine shaft system torsional vibration damper housing, comprising an inner housing and an outer housing, wherein the inner housing is clamped on the outer housing;

[0006] Four positioning blocks are installed around the outer side of the inner shell at equal distances, and the outer shell is provided with positioning sockets matching the positioning blocks, and the outer shell is symmetrically provided with connecting slots connected to each other on both sides of the corresponding positioning sockets, a fixed shaft is fixedly installed in one of the connecting slots, and a clamping rotating plate is rotatably connected to the fixed shaft.

[0007] Furthermore, an annular groove is provided on one side of the inner shell, and a flange is integrally formed and connected to the inner side of the inner shell corresponding to the annular groove.

[0008] Furthermore, a first positioning hole is provided on the front side of the clamping rotating plate, and a second positioning hole is provided on a side of the inner shell corresponding to the annular groove.

[0009] Furthermore, the first positioning hole and the second positioning hole are both screw holes and are arranged around with equal distances.

[0010] Furthermore, the front and rear sides of the clamping rotating plate are respectively fitted with the front and rear sides of the inner wall of the connecting slot.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] When the torsional vibration damper shell is assembled, the utility model embeds the inner shell into the outer shell so that the positioning plug is inserted into the positioning socket to form a preliminary connection. Then, under the connection of the fixed shaft, the clamping rotating plate in one of the connecting slots can be rotated so that the other end thereof is rotated into the inside of the other connecting slot and is kept in a horizontal state and pressed and fixed from the front side of the positioning plug. Finally, the sealed cover plate can be tightened and fixed by bolts in cooperation with the first positioning hole and the second positioning hole, so as to realize the final fixation of the inner shell. The double-layer structure of the torsional vibration damper shell for the shaft system of the marine engine has a reasonable structural design and adopts a double-layer torsional vibration damper shell design, so that it has a high strength and is not easy to be deformed or worn. Even when one of the external or internal shells is damaged, it can be quickly disassembled and replaced, so that it has a high service life and a good use effect, which is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the inner shell of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the outer shell of the utility model;

[0016] Figure 4 It is a partial structural cross-sectional view of the outer shell of the utility model.

[0017] In the figure: 1 inner housing, 2 outer housing, 3 positioning plug, 4 positioning socket, 5 connecting slot, 6 fixing shaft, 7 clamping rotating plate, 8 annular groove, 9 flange, 10 first positioning hole, 11 second positioning hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4A double-layer structure marine engine shaft torsional vibration damper housing comprises an inner housing 1 and an outer housing 2, wherein the inner housing 1 is clamped on the outer housing 2.

[0020] Four positioning blocks 3 are installed around the outer side of the inner shell 1 at equal distances, and the outer shell 2 is provided with positioning sockets 4 matched with the positioning blocks 3. The outer shell 2 is symmetrically provided with connecting slots 5 connected with each other on both sides corresponding to the positioning sockets 4, and a fixed shaft 6 is fixedly installed in one of the connecting slots 5, and a clamping rotating plate 7 is rotatably connected to the fixed shaft 6.

[0021] Specifically, an annular groove 8 is opened on one side of the inner shell 1, and a cover plate can be installed at the annular groove 8 to protect the internal structure. The inner side of the inner shell 1 corresponding to the annular groove 8 is integrally connected with a flange 9, and the flange 9 can form a connection with the marine engine shaft.

[0022] Specifically, a first positioning hole 10 is opened on the front of the clamping rotating plate 7, and a second positioning hole 11 is opened on a side of the inner shell 1 corresponding to the annular groove 8. The first positioning hole 10 and the second positioning hole 11 can be used in conjunction with bolts to tighten and fix the cover plate.

[0023] Specifically, the first positioning hole 10 and the second positioning hole 11 are both screw holes and are arranged around with equal distances.

[0024] Specifically, the front and rear sides of the clamping rotating plate 7 are respectively fitted with the front and rear sides of the inner wall of the connecting clamping slot 5 .

[0025] The double-layer structure of the marine engine shaft system torsional vibration damper housing has a reasonable structural design and adopts a double-layer torsional vibration damper housing design, so that it has high strength and is not easy to deform or wear. Even when one of the external or internal housings is damaged, it can be quickly disassembled and replaced, thereby having a long service life and good use effect, which is conducive to popularization and use.

[0026] During use, when assembling the torsional vibration damper housing, the inner housing 1 is embedded in the outer housing 2, so that the positioning block 3 is inserted into the positioning socket 4 to form a preliminary connection, and then under the connection of the fixed shaft 6, the clamping turn plate 7 in one of the connecting slots 5 can be rotated so that the other end is turned into the inside of the other connecting slot 5, and kept in a horizontal state and pressed and fixed from the front side of the positioning block 3, finally, the sealed cover plate can be tightened and fixed with the first positioning hole 10 and the second positioning hole 11 by bolts, thereby realizing the final fixation of the inner housing 1.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layered marine engine shaft torsional vibration damper housing, comprising an inner housing (1) and an outer housing (2), characterized in that: The inner shell (1) is clamped onto the outer shell (2); Four positioning blocks (3) are equidistantly mounted around the outer side of the inner shell (1); positioning sockets (4) adapted to the positioning blocks (3) are provided on the outer shell (2) at positions corresponding to the positioning sockets (3); connecting slots (5) communicating with the positioning sockets (4) are symmetrically provided on both sides of the outer shell (2) corresponding to the positioning sockets (4); a fixed shaft (6) is fixedly mounted in one of the connecting slots (5); and a clamping rotating plate (7) is rotatably connected to the fixed shaft (6).

2. A double-layered marine engine shaft torsional vibration damper housing according to claim 1, characterized in that: An annular groove (8) is provided on one side of the inner shell (1), and a flange (9) is integrally formed and connected to the inner side of the inner shell (1) corresponding to the annular groove (8).

3. A double-layered marine engine shaft torsional vibration damper housing according to claim 2, characterized in that: A first positioning hole (10) is provided on the front side of the clamping rotating plate (7), and a second positioning hole (11) is provided on a side of the inner shell (1) corresponding to the annular groove (8).

4. A double-layered marine engine shaft torsional vibration damper housing according to claim 3, characterized in that: The first positioning hole (10) and the second positioning hole (11) are both screw holes and are arranged around each other at equal distances.

5. A double-layered marine engine shaft torsional vibration damper housing according to claim 4, characterized in that: The front and rear sides of the clamping rotating plate (7) are respectively fitted with the front and rear sides of the inner wall of the connecting clamping slot (5).

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