CN216975027U - Marine diesel engine and free end power output device thereof - Google Patents
Marine diesel engine and free end power output device thereof Download PDFInfo
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- CN216975027U CN216975027U CN202122965046.5U CN202122965046U CN216975027U CN 216975027 U CN216975027 U CN 216975027U CN 202122965046 U CN202122965046 U CN 202122965046U CN 216975027 U CN216975027 U CN 216975027U
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Abstract
The utility model belongs to the technical field of engines, and particularly relates to a marine diesel engine and a free end power output device thereof, wherein the free end power output device comprises: one end of the output shaft is fixedly connected with a crankshaft and a shock absorber of the marine diesel engine respectively, and an oil supply cavity is defined by the end face of the end of the output shaft and the crankshaft; the oil duct is arranged on the output shaft and communicated with the oil supply cavity; the oil seal assembly is arranged at the joint of the output shaft and the shock absorber; the pressing plate is arranged at the other end of the output shaft; and the flange is arranged at the other end of the output shaft and is in transmission connection with the power receiving component through the flange. According to the free end power output device, the technical problems that lubricating oil of the shock absorber is difficult to supply and the shock absorber is seriously abraded are solved.
Description
Technical Field
The utility model belongs to the technical field of engines, and particularly relates to a marine diesel engine and a free end power output device thereof.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
An engine is a machine capable of converting other forms of energy into mechanical energy, and includes gasoline engines, diesel engines, and the like, and diesel engines are widely used in ships.
Free-end power take-offs are an important component of diesel engines. The existing free end power output device has poor transmission efficiency of output torque, and the lubricating oil of the shock absorber is difficult to supply, so that the shock absorber is seriously abraded.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a marine diesel engine and a free end power output device thereof so as to at least partially solve the problems in the prior art. The purpose is realized by the following technical scheme:
a first aspect of the present invention provides a free-end power output apparatus for a diesel engine, comprising:
one end of the output shaft is fixedly connected with a crankshaft and a shock absorber of the marine diesel engine respectively, and an oil supply cavity is defined by the end face of the one end of the output shaft and the crankshaft;
the oil duct is arranged on the output shaft and communicated with the oil supply cavity;
the oil seal assembly is arranged at the joint of the output shaft and the shock absorber;
the pressing plate is arranged at the other end of the output shaft;
and the flange is arranged at the other end of the output shaft and is in transmission connection with the power receiving component through the flange.
According to the free end power output device provided by the utility model, the output shaft is tightly matched with the crankshaft and is in transmission connection with the downstream power receiving component through the flange, so that the effective output of power is realized, meanwhile, the device can reliably press the vibration absorber and the pump driving gear onto the crankshaft, and forms a closed oil supply cavity of vibration absorber lubricating oil together with the crankshaft, so that lubricating oil is provided for the vibration absorber, the vibration absorption of the crankshaft is realized, and the technical problems of difficult supply of the lubricating oil of the vibration absorber and serious abrasion of the vibration absorber are solved.
In addition, the free-end power output device according to the present invention may further have the following additional technical features:
in some embodiments of the utility model, the one end of the output shaft is provided with a locating boss against which a pump drive gear of the diesel engine radially abuts.
In some embodiments of the utility model, further comprising:
the shaft neck is arranged in the circumferential direction of the output shaft;
and the bearing bush is circumferentially arranged on the output shaft and is matched with the journal.
In some embodiments of the utility model, the oil seal assembly comprises:
a slinger circumferentially mounted to the output shaft.
In some embodiments of the utility model, the oil seal assembly further comprises:
and the shaft seal is circumferentially arranged on the output shaft, the oil retainer is abutted against the end surface of the bearing bush, and the shaft seal is a labyrinth shaft seal.
In some embodiments of the utility model, the oil seal assembly further comprises:
the oil seal shaft neck is circumferentially arranged on the output shaft, and the shaft seal is sleeved outside the oil seal shaft neck.
In some embodiments of the utility model, a sinking surface is provided on the compression surface between the pressure plate and the damper.
In some embodiments of the utility model, the sinking plane is disposed at the periphery of the platen.
In some embodiments of the present invention, the output shaft is provided with a flange positioning shoulder, the flange axially abuts against the flange positioning shoulder, and the flange is connected with the output shaft key through a flat key.
A second aspect of the utility model provides a marine diesel engine including a free-end power take off as claimed in any one of the preceding claims.
The marine diesel engine according to the embodiment of the utility model has the same advantages as the free end power output device, and the details are not repeated herein.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a cross-sectional view of one embodiment of a free-end power take-off provided by the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic diagram of an output shaft of the free-end power output apparatus shown in FIG. 1;
FIG. 4 is a side cross-sectional view of the output shaft of FIG. 3;
FIG. 5 is an enlarged view of portion B of FIG. 4;
fig. 6 is an enlarged view of a portion C in fig. 4.
The reference symbols in the drawings denote the following:
1-output shaft, 2-crankshaft, 3-vibration absorber, 4-oil supply cavity, 5-oil duct, 6-pressure plate and 7-flange;
8-positioning boss, 9-pump driving gear, 10-shaft neck, 11-bearing bush, 12-oil retainer and 13-shaft seal;
14-oil seal shaft neck, 15-pressing surface, 16-sinking surface, 17-flange positioning shoulder, 18-flat key and 19-key groove; 20-slinger retainer shoulder.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In one embodiment, the present invention provides a free end power take off for a marine diesel engine, as shown in fig. 1-6, comprising an output shaft 1, an oil gallery 5, an oil seal assembly, a pressure plate 6 and a flange 7. One end of the output shaft 1 is fixedly connected with a crankshaft 2 and a shock absorber 3 of the marine diesel engine respectively, and an oil supply cavity 4 is defined by the end face of the one end of the output shaft 1 and the crankshaft 2. In order to realize oil supply of the oil supply cavity 4, an oil duct 5 is formed on the output shaft 1, the oil duct 5 is communicated with the oil supply cavity 4, and an oil hole is formed in the output shaft 1 and can be regarded as an oil inlet of the oil duct 5.
After the oil supply cavity 4 is arranged, in order to avoid lubricating oil leakage, the device is also provided with an oil sealing assembly which is arranged at the joint of the output shaft 1 and the shock absorber 3 so as to realize the sealing of the oil supply cavity 4.
The pressure plate 6 is arranged at the other end of the output shaft 1, the flange 7 is arranged at the other end of the output shaft 1 and is in transmission connection with the power receiving component through the flange 7, namely, the device is connected with other components through the flange 7, and therefore power output is achieved.
According to the free end power output device provided by the utility model, the output shaft 1 is tightly matched with the crankshaft 2 and is in transmission connection with a downstream power receiving component through the flange 7, so that the effective output of power is realized, meanwhile, the device can reliably press the shock absorber 3 and the pump driving gear 9 onto the crankshaft 2, and form the closed oil supply cavity 4 of the lubricating oil of the shock absorber 3 together with the crankshaft 2, so that the lubricating oil is provided for the shock absorber 3, the shock absorption of the crankshaft 2 is realized, and the technical problems that the lubricating oil of the shock absorber 3 is difficult to supply and the shock absorber 3 is seriously worn are solved.
In some embodiments, the one end of the output shaft 1 is provided with a positioning boss 8, and the pump driving gear 9 of the marine diesel engine radially abuts against the positioning boss 8, so that the radial positioning of the pump driving gear 9 is realized, and the reliability of the radial positioning of the pump driving gear 9 is improved.
Specifically, two positioning bosses 8 may be provided, the two positioning bosses 8 are respectively provided on two sides of the output shaft 1, and the two positioning bosses 8 respectively radially position the output shaft 1 and the pump driving gear 9, so that the output shaft 1 is concentric with the rotation center of the crankshaft 2. Meanwhile, the pump driving gear 9 is axially positioned through the axial thickness of the positioning boss 8, so that the pump driving gear 9 and a gear of the pump are accurately meshed for transmission.
Further, the device also comprises a shaft neck 10 and a bearing bush 11, wherein the shaft neck 10 is arranged on the circumference of the output shaft 1, and the bearing bush 11 is circumferentially arranged on the output shaft 1 and is matched with the shaft neck 10. Therefore, the shaft neck 10 and the bearing bush 11 are matched to form a bearing structure, so that the swing of the output shaft 1 in the running process is reduced, and the rotation stability is improved.
In some embodiments, the oil seal assembly includes at least one of a slinger 12, a shaft seal 13, and an oil seal journal 14. The oil retainer 12 is circumferentially mounted on the output shaft 1, the shaft seal 13 is circumferentially mounted on the output shaft 1, the oil retainer 12 abuts against an end face of the bearing bush 11, the shaft seal 13 is a labyrinth shaft seal, the oil seal journal 14 is circumferentially arranged on the output shaft 1, and the shaft seal 13 is sleeved outside the oil seal journal 14. The output shaft 1 is provided with a slinger positioning shoulder 20 for positioning and mounting the slinger 12.
Preferably, the oil seal assembly seals oil through the oil deflector ring 12, the labyrinth shaft seal 13 and the oil seal journal 14, so as to more effectively prevent the lubricating oil from leaking to the outside of the machine and improve the oil sealing effect.
In order to further reduce the difficulty of the machining process, a sinking surface 16 is arranged on a pressing surface 15 between the pressing plate 6 and the damper 3. That is to say, the pressing surfaces 15 on the two sides of the pressing plate 6 are provided with the sinking surfaces 16, and the area of the pressing surface 15 is reduced, so that the finish machining area is reduced, the machining cost is reduced, and the form and position tolerance of the pressing surface 15 is easy to guarantee.
Specifically, the sinking plane 16 is provided on the outer periphery of the pressure plate 6. In this way, the pressing surface 15 is concentrated on the periphery of the pressure plate 6, and under the condition of the same large bolt axial force, the acting radius of the friction force is increased, so that higher torque transmission can be provided for the pump driving gear 9.
In order to realize the positioning of the flange 7, a flange positioning shoulder 17 is arranged on the output shaft 1, the flange 7 axially abuts against the flange positioning shoulder 17, and the flange 7 is connected with the output shaft 1 through a flat key 18. The flange positioning shoulder 17, together with the pressure plate 6, effects the axial positioning of the flange 7. Two key grooves 19 are formed in the output shaft 1, flat keys 18 are mounted on the key grooves 19, and the flange 7 is assembled with the output shaft 1 through the flat keys 18.
Further, the device also comprises a connecting bolt hole, a pressing plate 6 bolt hole and a torsional vibration testing tool mounting hole, wherein the connecting bolt hole is used for mounting the connecting bolt, and the pressing plate 6 bolt hole is used for mounting the pressing plate 6 bolt. The torsional vibration test tool can be installed in the torsional vibration test tool installation hole so as to test the torsional vibration condition of the free end of the diesel engine.
The above-mentioned specific implementation has the following technical effects:
(1) through the close cooperation of the output shaft, the pressure plate, the oil supply cavity, the bearing structure, the shaft seal and other structures, the effective power output of the free end of the diesel engine can be realized, and the power output effect is improved.
(2) On the outer circumference of the flange surface is tightly pressed on the contact structure, the processing difficulty is reduced by reducing the area of a high-precision processing surface, and the product quality is easy to ensure; the pressing contact surface is arranged on the outer circumference of the flange surface, so that higher torque transfer capacity can be realized under the condition of the same large bolt axial force; the outer circumference of the flange surface is pressed tightly, so that the processing manufacturability is improved, and the torque output capacity is improved.
(3) Through designing axial and radial oil ducts and skillfully matching with a crankshaft structure, continuous and stable oil supply of the shock absorber and the bearing can be synchronously realized, and reliable operation of the diesel engine is ensured.
(4) The oil seal is realized by the combined action of the oil retainer positioning shoulder, the oil retainer, the labyrinth shaft seal and the oil seal shaft neck, and the problem of lubricating oil leakage can be solved.
(5) Through setting up structures such as double key groove, clamp plate mounting hole, realize the axial and the circumferencial direction location of flange, and then realized reliable power output.
(6) Through setting up torsional vibration test fixture mounting hole, can realize the quick test of the diesel engine shafting free end torsional vibration condition.
The utility model provides a marine diesel engine, which comprises the free end power output device in any technical scheme.
The marine diesel engine according to the embodiment of the utility model has the same advantages as the free end power output device, and the details are not repeated herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A free-end power take-off for a diesel engine, comprising:
one end of the output shaft is fixedly connected with a crankshaft and a shock absorber of the marine diesel engine respectively, and the end face of the one end of the output shaft and the crankshaft enclose an oil supply cavity;
the oil duct is arranged on the output shaft and communicated with the oil supply cavity;
the oil seal assembly is arranged at the joint of the output shaft and the shock absorber;
the pressing plate is arranged at the other end of the output shaft;
and the flange is arranged at the other end of the output shaft and is in transmission connection with the power receiving component through the flange.
2. The free end power take off of claim 1 wherein the one end of the output shaft is provided with a locating boss against which a pump drive gear of the diesel engine radially abuts.
3. The free-end power output apparatus according to claim 2, further comprising:
the shaft neck is arranged in the circumferential direction of the output shaft;
and the bearing bush is circumferentially arranged on the output shaft and is matched with the journal.
4. The free end power take off of claim 3, wherein the oil seal assembly comprises:
a slinger circumferentially mounted to the output shaft.
5. The free end power take off of claim 4, wherein the oil seal assembly further comprises:
and the shaft seal is circumferentially arranged on the output shaft, the oil retainer is abutted against the end surface of the bearing bush, and the shaft seal is a labyrinth shaft seal.
6. The free end power take off of claim 5, wherein the oil seal assembly further comprises:
the oil seal shaft neck is circumferentially arranged on the output shaft, and the shaft seal is sleeved outside the oil seal shaft neck.
7. The free end power take off of claim 1, wherein a compression surface between the pressure plate and the damper is provided with a sunken surface.
8. The free end power take off of claim 7, wherein the sinking plane is disposed at an outer periphery of the pressure plate.
9. The free end power take off of claim 1, wherein the output shaft is provided with a flange locating shoulder against which the flange axially abuts, and the flange is keyed to the output shaft by a flat key.
10. A marine diesel engine comprising a free-end power take-off as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122965046.5U CN216975027U (en) | 2021-11-29 | 2021-11-29 | Marine diesel engine and free end power output device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122965046.5U CN216975027U (en) | 2021-11-29 | 2021-11-29 | Marine diesel engine and free end power output device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975027U true CN216975027U (en) | 2022-07-15 |
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ID=82345214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122965046.5U Active CN216975027U (en) | 2021-11-29 | 2021-11-29 | Marine diesel engine and free end power output device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975027U (en) |
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2021
- 2021-11-29 CN CN202122965046.5U patent/CN216975027U/en active Active
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