JP2014111448A - Ladder propeller propulsion unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ladder propeller propulsion unit which is improved for being manufactured and operated at low costs.SOLUTION: An output shaft of a driving motor 1 is operatively connected with a shaft 9 of a propeller P through a power transmission device A, and a propeller shaft is housed in a ladder propeller housing 6 that may be provided at the exterior of a hull. The propeller provided at the propeller shaft is disposed at the exterior of the ladder propeller housing. A lubrication and/or cooling device is provided for the propeller shaft and/or a power transmission device region located at the upstream of the propeller shaft. A power transmission device further includes a fluid clutch or a fluid torque converter 3. The fluid clutch or the fluid torque converter uses a functional fluid that is also used for the lubrication and/or cooling device.

Description

  The present invention relates to a ladder propeller propulsion device and a ladder propeller propulsion method according to the premise of claim 1.

  For example, in particular, a rudder propeller propulsion device, which is specified in the preamble of claim 1 and has a driving prime mover, is known from German utility model DE 200 21 466 U1. It is also well known in practice to use a fluid clutch that is connected to the marine propulsion device, that is, incorporated in the power transmission of the propulsion unit. However, the fluid clutch is also an independent element and has its own filling fluid such as a sealed casing and oil.

  The present invention has and aims to improve known ladder propeller propulsion devices in a particularly inexpensive manner to manufacture and operate.

  The purpose of this is a ladder propeller propulsion device having a drive prime mover, the output shaft of the drive prime mover being operatively connected to the shaft of the propeller via a power transmission device, the propeller shaft being provided outside the hull A propeller shaft housed in a possible rudder propeller housing and provided on the propeller shaft is provided outside the rudder propeller housing and lubricates for the propeller shaft and / or the power transmission device region upstream of the propeller shaft And / or a cooling device, wherein the power transmission device further includes a fluid clutch or a fluid torque converter, and the power transmission device has a functionality common to the fluid clutch or the fluid torque converter and the lubrication and / or cooling device. In a mode where fluid is used, This is achieved by a ladder propeller propulsion device combined with or integrated with the lubrication and / or cooling device.

  Thus, the functional fluid of the lubrication and / or cooling device and the functional fluid of the fluid clutch or fluid torque converter are advantageously realized by supplying the same fluid.

  An advantageous improvement is that the lubrication and / or cooling device comprises the interior of the ladder propeller housing, that the functional fluid is contained within the ladder propeller housing, and / or that the fluid clutch or fluid torque converter is in the ladder propeller housing. More preferably, a fluid contact is made in the interior of the substrate. The latter can be advantageously realized by providing a fluid clutch or a fluid torque converter within the ladder propeller housing or in an extension within the ship hull of the ladder propeller housing. Such an extension is structurally referred to as a conical support tube or support cone.

  Yet another preferred configuration of the present invention provides for the fluid clutch or fluid torque converter to lubricate and / or cool the device in such a manner that the fluid clutch or fluid torque converter ensures delivery of the functional fluid within the lubrication and / or cooling device. Or combining the lubrication and / or cooling device with the lubrication and / or cooling device.

  It can also be advantageously performed that the fluid clutch comprises several fluid clutch units or that the fluid torque converter comprises several fluid converters. Alternatively or additionally, an elastic clutch and / or a shiftable clutch may be provided in the power transmission device.

  Furthermore, the drive prime mover can be advantageously arranged in the hull.

  In the ladder propeller propulsion method according to the present invention, the output shaft of the driving prime mover is operatively connected to the shaft of the propeller via a power transmission device, and the propeller shaft is in a ladder propeller housing arranged outside the hull. And the propeller shaft is disposed on the propeller shaft outside the ladder propeller housing, and the propeller shaft and / or the power transmission device region upstream thereof is lubricated and / or cooled with a functional fluid, and the power The transmission device includes a fluid clutch or a fluid torque converter, which is used to lubricate and / or cool the propeller shaft and / or the power transmission device region upstream of the propeller shaft. Some functional flows of the same functional fluid There is supplied.

  An advantageous improvement is that the lubrication and / or cooling device includes the inside of the ladder propeller housing and that the fluid clutch or fluid torque converter is in fluid connection with the inside of the ladder propeller housing, these improvements. In particular, a functional fluid may be contained within the ladder propeller housing, and more preferably, a fluid clutch or fluid torque converter is provided within the ladder propeller housing, or an extension within the ladder propeller housing, for example, It is arranged in a conical support tube or support cone in the hull.

  Preferably, the fluid clutch or fluid torque converter is combined with the lubrication and / or cooling device in such a manner that the fluid clutch or fluid torque converter ensures the transfer of the functional fluid within the lubrication and / or cooling device or It is further adapted to be integrated into a lubrication and / or cooling device.

  According to a particular configuration, the present invention forms a ship propulsion device of the ladder propeller type, which propulsion device has, for example, an integrated vertically arranged drive prime mover and particularly preferably lubrication and cooling. It has a fluid clutch or fluid torque converter integrated within the ladder propeller housing, which is a component of the device, or within an extension of the housing. Integration of the fluid clutch or the fluid torque converter into the inside of the ladder propeller housing or an extension of the housing enables the construction of a compact propulsion system. By disposing the fluid clutch or the fluid torque converter in the functional fluid filled, in particular, the oil filling of the ladder propeller housing, the lubricant and coolant of the power transmission device of the ladder propeller, and the fluid clutch or fluid torque converter Can be realized by the same fluid. This obviates the need for a fluid clutch or fluid torque converter seal to the surrounding environment that is required for a conventionally arranged fluid clutch or fluid torque converter. The extension described above is referred to as a conical support tube or support cone.

  A fluid clutch or fluid torque converter has a naturally occurring pumping effect from the inside to the outside. This pumping effect is used by the present invention to provide an underwater portion of the ladder propeller propulsion device that is very well cooled by the surrounding water during a voyage, such as seawater, and an upper portion that is cooled little or not at all. In the meantime, a fluid exchange, in particular a lubricating oil exchange, can take place. In currently known designs, a separate pump is required for this purpose.

  The fluid clutch or fluid torque converter may be configured as what is referred to as a double clutch or double converter, which produces twice the transmittable torque for the same clutch or converter diameter. Torque in a given rotational direction is also increased by using a fluid clutch or a fluid clutch turbine wheel having blades angled in the tangential direction in the pump. This preferably takes place in the forward direction with respect to the propeller propulsion. The blade tilt condition results in low transmittable torque in reverse rotation or reverse propulsion, but reverse propulsion is only required in the limited operating situation of the ladder propeller propulsion device.

Further advantages of the present invention are:
-Vibration isolation between the driving machine and the working machine in a compact space;
-Particularly quiet operation is possible by isolating the drive motor from the mechanical structure;
-Reduction of the starting torque of the drive motor, i.e. achieving a preferred or particularly low starting torque of the drive engine
-Reduction of types of operating elements by lubrication / cooling of the ladder propeller and filling of the fluid clutch or the fluid torque converter with a single fluid,
-Removal of the pump device by circulating the lubrication / coolant or lubrication / cooling fluid, utilizing the pumping effect of the fluid clutch or the fluid torque converter,
-As little maintenance and inspection as possible by removing seals and removing worn parts of the clutch,
-Protection of ladder propellers against heavy shock caused by ship landing, underwater foreign matter, ice, etc.
It is.

  Further preferred and / or advantageous embodiments of the invention will be understood from the claims and the entire specification of the present application.

  The invention is explained in more detail below on the basis of embodiments with reference to the accompanying drawings.

It is a longitudinal cross-sectional view of the 1st Example of a ladder propeller device. It is a longitudinal cross-sectional view of the 2nd Example of a ladder propeller device. It is a longitudinal cross-sectional view of the 3rd Example of a ladder propeller device. It is a longitudinal cross-sectional view of the 4th Example of a ladder propeller device.

  The invention will be described in more detail by way of example with reference to the examples and applications described below and shown in the accompanying drawings. That is, the present invention is not limited to these examples or applications, or a combination of these examples and applications. The characteristics of the method and device are also understood from the characteristics of the device or method, respectively.

  Individual features described and / or illustrated with respect to a particular embodiment are not limited to that embodiment or any combination of other features of that embodiment, and such individual features are described herein. Although not described separately, it can be combined with other modifications within the scope of technical possibilities.

  The same reference numbers in different drawings indicate the same or similar components or components that perform the same or similar operations. In the reference to the drawings, the features to which reference numerals are not given are also clear regardless of whether they are described below. On the other hand, features that are included herein but not shown in the drawings will be readily apparent to those skilled in the art.

  FIG. 1 shows a longitudinal sectional view of a first embodiment of a ladder propeller propulsion device R having a drive motor 1 and a ladder propeller housing G and provided on a hull. A ladder propeller propulsion device R having a "simple" fluid clutch 3, i.e. one pump wheel 3a and one turbine wheel 3b is shown. The fluid clutch shown in connection with the embodiments is to be understood as merely illustrative and a fluid torque converter can be used in place of the fluid clutch within the scope of the present invention to achieve the same results and advantages. . Although a fluid clutch is referred to below, it will be clearly understood by those skilled in the art that a fluid torque converter can be provided using individual technical adaptation means without repeated description. Will. The rotational speed slip in the conventional fluid clutch is constant or adjusted by the amount of functional fluid, but the torque transmission in the torque converter is not adjusted by the change of the filling amount of the functional fluid. Rather, it is done by adjusting the guide vane.

  The description of the ladder propeller propulsion device R having the propeller P in the nozzle D is also given here for illustrative purposes only. A drive prime mover 1 such as an electric motor provided vertically should also be understood as an example. The fluid clutch 3 may also be used in a ladder propeller propulsion device R that is mechanically driven in other manners, such as using a bevel gear in the power transmission device A, for example.

  Additional components of the rudder propeller propulsion device include an internal space 4 filled with oil in the ladder propeller housing G, a vertical shaft 5, a power transmission device A, a ladder propeller housing base movable around the vertical shaft 5, and a power transmission device A. A vertical shaft 7, a water surface lower part 8 having a gear box (not shown) of a ladder propeller housing G, a propeller shaft 9, an azimuth adjusting device 10, and a nozzle D.

  In this embodiment of the rudder propeller propulsion device R, the fluid clutch 3 is used inside a rudder propeller housing G filled with oil. Specifically, the rudder propeller housing G is an extension E to the inside of the hull 2. And a fluid clutch is accommodated in the extension E. Accordingly, since the interior 4 of the ladder propeller housing G communicates with the interior 4 'of the extension E, oil that can be generally regarded as a lubricating fluid and a cooling fluid, that is, the functional fluid B in short, is converted into the fluid clutch 3 Functional fluid B or functional medium for In more detail, the fluid clutch 3 is operated by the same functional fluid as the lubrication and / or cooling device SK, which is substantially formed by the ladder propeller housing G and supplied with the functional fluid B. Such an extension E may have a structure such as a conical support tube or a support cone.

  The pumping effect of the fluid clutch 3 is additionally shown in FIG. This pumping effect, usually by an additional impeller or external pump, is fully or partially used to circulate a functional fluid B such as oil in the ladder propeller housing G.

  Effective alternative arrangements of fluid clutches or fluid torque converters on the propeller shaft 9 are also possible in principle.

  2-4, the same reference numerals as those in FIG. 1 are used for components and parts. In order to avoid restatement, only the differences of the embodiment of FIGS. 2-4 to the embodiment of FIG.

  FIG. 2, which is a longitudinal sectional view similar to FIG. 1, shows a ladder propeller propulsion device R having a double fluid clutch 3, that is, a ladder propeller propulsion device R having two pump wheels 3a and two turbine wheels 3b. This is shown as an additional example. A clutch having three or more pump wheels 3a and three or more turbine wheels 3b is also possible.

  FIG. 3, which is a longitudinal sectional view similar to FIGS. 1 and 2, shows still another embodiment of the ladder propeller propulsion device R. The ladder propeller propulsion device R includes the fluid clutch 3 and the open clutch. It has a rotating propeller P, in other words, it does not have the nozzle D in the first and second embodiments.

  FIG. 4, which is a longitudinal sectional view similar to FIGS. 1-3, shows a propeller propulsion device R having a fluid clutch in a two-propeller structure, that is, having two propellers P.

  As described above, a specific description has been given in the description of the fluid clutch embodiment, but it should be understood that this description is merely exemplary. In the scope of the present invention, a fluid torque converter can be used instead of the fluid clutch. Accordingly, since the fluid torque converter is in principle suitable for use in the present application, those skilled in the art have used it in the examples without using their own originality and without departing from the scope of the present invention. Instead of fluid clutches, devices and methods using fluid torque converters can be readily provided, possibly with necessary adjustments of the apparatus and method.

  The present invention is shown by way of illustration only and not by way of limitation, based on the description herein and the examples in the accompanying drawings. Rather, the present invention falls within the scope of the specification, particularly the claims, the general description and examples in the introductory portion of the specification, and any combination of the expert knowledge and prior art. Includes all variations, modifications, substitutions and combinations thereof that can be derived. In particular, all the individual features and feasibility of the present invention and embodiments of the present invention can be combined.

DESCRIPTION OF SYMBOLS 1 Drive prime mover 2 Hull 3 Fluid clutch 3a Pump wheel 3b Turbine wheel 4 Internal space 4 'filled with oil of ladder propeller housing Internal space 5' of extended part Vertical axis 6 Ladder propeller housing 7 which can operate around a vertical axis 7 Power transmission Vertical shaft 8 of the apparatus Lower surface portion 9 having a gear box of the ladder propeller housing 9 Propeller shaft 10 Azimuth adjusting device A Power transmission device B Functional fluid D Nozzle E Expansion portion F Arrow G Ladder propeller housing P Propeller R Ladder propeller propulsion device SK Lubrication and / or cooling device

Claims (9)

Rudder propeller propulsion device der having a drive motor,
The drive prime mover shaft is disposed in a power transmission device region and can be operatively connected to a propeller shaft via a power transmission device having a fluid clutch or a fluid torque converter , the propeller shaft being external to the hull. The propeller housed in a ladder propeller housing that can be disposed on the propeller shaft is disposed outside the ladder propeller housing ,
One common space is formed by the ladder propeller housing and the power transmission device region, and one functional fluid is filled in the space, and the one functional fluid is the fluid torque converter or the fluid clutch. A propulsion device characterized by acting as a working fluid and acting as a lubricating fluid and a cooling fluid in the space . The ladder propeller propulsion device according to claim 1, wherein the space includes an inside of a ladder propeller housing.   2. The ladder propeller propulsion device according to claim 1, wherein the fluid clutch or the fluid torque converter is fluidly connected to the inside of the ladder propeller housing, and the fluid clutch or the fluid torque converter is disposed inside the ladder propeller housing. A propulsion device characterized by being arranged.   2. The ladder propeller propulsion device according to claim 1, wherein the fluid clutch or the fluid torque converter is fluidly connected to the inside of the ladder propeller housing, and the fluid clutch or the fluid torque converter is disposed inside the ladder propeller housing. A propulsion device arranged in an expansion section, wherein the expansion section is inside the hull. The ladder propeller propulsion device according to any one of claims 1 to 4, wherein the fluid clutch or the fluid torque converter ensures that the fluid clutch or the fluid torque converter conveys a functional fluid in the space . The propulsion device is arranged in the space .   The ladder propeller propulsion device according to any one of claims 1 to 5, wherein the fluid clutch includes a number of fluid clutch units, or the fluid torque converter includes a number of fluid converter elements. Propulsion device characterized by.   The ladder propeller propulsion device according to any one of claims 1 to 6, wherein an elastic clutch is additionally provided in the power transmission device.   The ladder propeller propulsion device according to any one of claims 1 to 7, wherein a movable clutch is additionally provided in the power transmission device.   The ladder propeller propulsion device according to any one of claims 1 to 8, wherein the driving prime mover is disposed inside the hull.

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