CN214112822U - Ship propeller looseness early warning and monitoring system - Google Patents
Ship propeller looseness early warning and monitoring system Download PDFInfo
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- CN214112822U CN214112822U CN202022067829.7U CN202022067829U CN214112822U CN 214112822 U CN214112822 U CN 214112822U CN 202022067829 U CN202022067829 U CN 202022067829U CN 214112822 U CN214112822 U CN 214112822U
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- propeller
- sensor
- monitoring system
- propeller shaft
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Abstract
The utility model discloses a not hard up early warning monitoring system of boats and ships screw, monitoring system includes: a sensor for measuring the relative displacement of the propeller and the propeller shaft; the data acquisition box is in signal connection with the sensor, and a signal transmission cable of the data acquisition box penetrates through oil grooves in front and rear bearings of the propeller shaft; and the monitoring device is connected with the data acquisition box. The utility model discloses whether screw and propeller shaft relative displacement have taken place, the not hard up condition of screw hydraulic nut has taken place in time judging or discovering.
Description
Technical Field
The utility model belongs to the shipbuilding field, concretely relates to not hard up early warning monitoring system of boats and ships screw.
Background
In general shipbuilding, a propeller and a propeller shaft are assembled by adopting hydraulic nuts, after the propeller is confirmed to be installed without sliding, special technological equipment is used for screwing and fastening the hydraulic nuts, if the screw fitting work of the propeller and the propeller shaft is not good, the pressing-in amount, the pressing-in force and the like of the hydraulic assembly of the propeller have problems, after the shipbuilding is finished and delivered to a shipowner, in the actual operation process of a ship, the propeller and the propeller shaft may be loosened, the hydraulic nuts may also be loosened accordingly, and the more serious situation may be that: in the sailing process of the ship, the propeller is separated from the propeller shaft and even falls into the sea, so that the ship loses sailing power and seriously threatens the sailing safety of the ship.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a not hard up early warning monitoring system of boats and ships screw.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a ship propeller loosening early warning monitoring system, the monitoring system includes: a sensor for measuring the relative displacement of the propeller and the propeller shaft; the data acquisition box is in signal connection with the sensor, and a signal transmission cable of the data acquisition box penetrates through oil grooves in front and rear bearings of the propeller shaft; and the monitoring device is connected with the data acquisition box.
Preferably, the number of said sensors is 2.
Preferably, the sensor is provided on the propeller or propeller shaft.
Preferably, the sensor is a strain gauge.
Preferably, the sensors are divided into a main sensor and a back-up sensor, which are symmetrically distributed on both sides of the propeller shaft.
Compared with the prior art, the beneficial effects of the utility model are that: the measuring device (i.e. sensor) mounting position does not need special consideration, and the existing position can be utilized: the measuring device is arranged on a propeller shaft or a propeller near a stern seal (near the end surface of a stern shaft tube steel casting); the existing oil grooves on the front bearing and the rear bearing of the stern shaft tube can be utilized for measuring lines such as signal cables; real-time data of the relative displacement of the propeller and the propeller shaft obtained by measurement are transmitted to a monitoring system such as a cabin centralized control room and the like through a signal cable and other lines, so that the monitoring, the recording, the management, the analysis, the risk assessment and the like are facilitated; through monitoring real-time data, whether screw and propeller shaft relative displacement have taken place can be in time judged or discover, whether the not taken place the not hard up condition of screw hydraulic nut, especially can adopt corresponding measure at the boats and ships navigation in-process, and the emergent host computer that stops or SOS takes effective measure, can avoid the emergence of the bigger problem of shafting, ensures the normal operation and the safe navigation of boats and ships.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the installation of the sensor in the embodiment of the present invention.
Fig. 2 is an installation schematic diagram of the overall structure of the embodiment of the present invention.
A propeller-1; a propeller shaft-2; a sensor-3; signal transmission cable-4.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-2, the present embodiment provides a monitoring system including: the on-line monitoring device, the data acquisition box, the junction box, the electric power distribution box, the centralized control room cabinet and the like.
First, a force (torque) measuring strain gauge or other sensor may be used to monitor the relative displacement of the propeller and the propeller shaft.
The second and above measuring device is installed near the stern seal (near the end surface of the stern shaft tube steel casting), and the lines of the measuring device such as signal cables and the like are installed by utilizing oil grooves on the front bearing and the rear bearing of the stern shaft tube.
And thirdly, transmitting the measured real-time data (relative displacement data of the propeller and the propeller shaft) to a monitoring system such as a cabin centralized control room through a signal cable and other lines.
Fourthly, according to the actual requirements of ship construction and operation, whether a spare force (torque) measuring strain gauge or other sensors and other measuring devices are added can be selected.
Based on the technical scheme, the method for monitoring the relative displacement of the ship propeller and the propeller shaft has the following technical advantages:
1. the basic principle is as follows: in ship construction and actual operation, a torque value (force) in a normal operation range of a shafting is set firstly, if a propeller and a propeller shaft are loosened (generate relative displacement), a propeller hydraulic nut is loosened, the torque value (force) measured by a measuring device is rapidly reduced, and if the propeller hydraulic nut is loosened seriously, the torque value (force) measured by the measuring device has a trend of developing towards a lowest set value or a lower value (zero value);
2. the measuring device can be selected from measuring devices with high measuring precision: measuring torque (force measuring) strain gauges or other sensors and the like;
3. the installation position of the measuring device does not need special consideration, and the existing position can be utilized: the measuring device is arranged on a propeller shaft or a propeller near a stern seal (near the end surface of a stern shaft tube steel casting); the existing oil grooves on the front bearing and the rear bearing of the stern shaft tube can be utilized for measuring lines such as signal cables;
4. real-time data of the relative displacement of the propeller and the propeller shaft obtained by measurement are transmitted to a monitoring system such as a cabin centralized control room and the like through a signal cable and other lines, so that the monitoring, the recording, the management, the analysis, the risk assessment and the like are facilitated;
5. through monitoring real-time data, whether screw and propeller shaft relative displacement have taken place can be in time judged or discover, whether the not taken place the not hard up condition of screw hydraulic nut, especially can adopt corresponding measure at the boats and ships navigation in-process, and the emergent host computer that stops or SOS takes effective measure, can avoid the emergence of the bigger problem of shafting, ensures the normal operation and the safe navigation of boats and ships.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention can be made without departing from the spirit and scope of the present invention, and these modifications and improvements are within the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a boats and ships screw is not hard up early warning monitoring system which characterized in that, monitoring system includes:
a sensor for measuring the relative displacement of the propeller and the propeller shaft;
the data acquisition box is in signal connection with the sensor, and a signal transmission cable of the data acquisition box penetrates through oil grooves in front and rear bearings of the propeller shaft;
and the monitoring device is connected with the data acquisition box.
2. The marine propeller loosening warning and monitoring system of claim 1 wherein the number of sensors is 2.
3. The marine propeller loosening warning and monitoring system of claim 1 wherein the sensor is disposed on the propeller or propeller shaft.
4. The marine propeller loosening warning and monitoring system of claim 1 wherein the sensor is a strain gauge.
5. The system of claim 2, wherein the sensors are divided into a main sensor and a backup sensor, and the main sensor and the backup sensor are symmetrically distributed on two sides of the propeller shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022067829.7U CN214112822U (en) | 2020-09-21 | 2020-09-21 | Ship propeller looseness early warning and monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022067829.7U CN214112822U (en) | 2020-09-21 | 2020-09-21 | Ship propeller looseness early warning and monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214112822U true CN214112822U (en) | 2021-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022067829.7U Active CN214112822U (en) | 2020-09-21 | 2020-09-21 | Ship propeller looseness early warning and monitoring system |
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| Country | Link |
|---|---|
| CN (1) | CN214112822U (en) |
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2020
- 2020-09-21 CN CN202022067829.7U patent/CN214112822U/en active Active
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