Tail shaft state monitoring system of steering oar

Abstract

The invention discloses a tail shaft state monitoring system of a full-rotation steering oar, and relates to the technical field of steering oar monitoring, the tail shaft state monitoring system comprises a signal transmission device, a temperature sensor and a junction box, the signal transmission device is divided into a static ring part and a moving ring part which are connected through a bearing, the moving ring part is arranged on a cone-shaped body, the static ring part is arranged on an upper gear box bearing seat, and the temperature sensor is arranged on the junction box. The static coil part and the moving coil part are connected with signal transmission cables. The junction box is arranged on the cone-shaped body, the temperature sensor is arranged in the lower gear box body and the stern shaft bearing seat, the temperature sensor is connected with a sensor cable, the sensor cable penetrates through the steering stand column and extends into the junction box, and a signal transmission cable of the moving coil part extends into the junction box and is connected with the sensor cable. And a signal transmission cable of the static ring part is connected with an external control box. According to the invention, the lubricating oil quality, tail shaft wear, bearing temperature and the like of the steering oar can be monitored in real time, the ship stop time is reduced, and the utilization rate of ships and equipment is improved.

Description

Technical Field

[0001] The invention relates to a stern shaft state monitoring system of an omni-rotational propeller, belonging to the technical field of propeller monitoring. Background Art

[0002] Rudder propellers are widely used in ships with high maneuverability requirements because they can make ships have good maneuverability. Rudder propellers on existing ships cannot measure the state of their lubricating oil, the wear state of internal parts, the wear amount of the stern shaft bearing and the bearing temperature, resulting in frequent and regular docking for maintenance, which causes a huge waste of maintenance manpower and material resources, greatly increases the downtime of ships, and reduces the utilization rate of ships and equipment.

[0003] At present, the bearing temperature sensor for the full-rotating propeller is generally arranged on the stationary upper gearbox bearing seat, but since the underwater component rotates 360°, the problem of the entanglement of the stern shaft bearing temperature sensor cable cannot be solved. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a stern shaft status monitoring system for an azimuth propeller, which can monitor the lubricating oil quality, stern shaft wear, bearing temperature, etc. of the azimuth propeller in real time, reduce the ship's downtime, and improve the utilization rate of ships and equipment.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: The present invention provides a stern shaft state monitoring system of an azimuth rudder propeller, wherein the azimuth rudder propeller comprises an upper gear box assembly, a well box assembly, a rudder column and a lower gear box assembly; The upper gearbox assembly is partially embedded in the well box assembly, the lower end of the steering column is connected to the lower gearbox assembly, and the upper end extends into the well box assembly and is connected to the cone, and the cone can drive the steering column and the lower gearbox assembly to rotate together; the lower gearbox assembly is provided with a stern shaft bearing seat, and the stern shaft bearing seat is sleeved with a stern shaft; The monitoring system comprises a signal transmission device, a temperature sensor and a junction box, wherein the signal transmission device is divided into a stationary coil part and a dynamic coil part, wherein the stationary coil part and the dynamic coil part are rotationally connected, wherein the dynamic coil part is arranged on a cone, wherein the stationary coil part is arranged on the upper gearbox assembly, and wherein both the stationary coil part and the dynamic coil part are connected with a signal transmission cable; The junction box is arranged on the cone, the temperature sensor is arranged in the stern shaft bearing seat, the temperature sensor is connected with a sensor cable, the sensor cable passes through the steering column and extends into the junction box, the signal transmission cable of the moving coil part extends into the junction box and is connected with the sensor cable, and the signal transmission cable of the stationary coil part is connected with an external control box.

[0006] Furthermore, one end of the stern shaft extends to the outside of the lower gearbox assembly and is connected to the propeller, and the stern shaft is connected to the power mechanism, and can drive the propeller to rotate together when driven by the power mechanism; The power mechanism includes an input shaft and a transmission shaft. The input shaft is arranged in the upper gear box assembly through a bearing, and is circumferentially sleeved with a first conical wheel. The transmission shaft is arranged in a steering column, and the upper ends of the transmission shaft extend into the upper gear box assembly to be connected with the second conical wheel, and the lower ends extend into the lower gear box assembly to be connected with the third conical wheel. The stern shaft is circumferentially sleeved with a fourth conical wheel, the first conical wheel is meshed with the second conical wheel, and the third conical wheel is meshed with the fourth conical wheel.

[0007] Furthermore, the transmission shaft is provided with an upper gearbox bearing seat at the junction of the upper gearbox assembly and the well box assembly, the stationary ring part is arranged on the upper gearbox bearing seat, and the dynamic ring part is connected to the cone through a support ring.

[0008] Furthermore, the signal transmission cable of the static ring part is connected to the external control box through a scarf cover stuffing box.

[0009] Furthermore, a protective sleeve is provided on the outer sheath of the sensor cable, and the sensor cable and the protective sleeve pass through the steering column and the support ring in sequence and then extend into the junction box through the stuffing box.

[0010] Furthermore, a stern seal assembly is sleeved on the stern shaft, and the stern seal assembly includes a shell and a bushing, and a lip seal is used between the shell and the bushing; The bushing is arranged on the stern shaft, the shell is sleeved on the outer periphery of the bushing and is connected to the lower gear box assembly. A protective cover is provided at the place where the stern shaft extends to the outside of the lower gear box assembly. A measuring hole is opened on the protective cover. The measuring hole is used to insert a measuring tool. The measuring tool is used to measure the gap between the shell and the bushing.

[0011] Furthermore, a screw pump is provided in the steering column, and the screw pump is used to drive the lubricating oil to circulate continuously in the lower gear box assembly, the well box assembly and the upper gear box assembly; An oil pump is provided outside the well box assembly, and the oil pump is connected to a well box oil suction pipe, and the well box oil suction pipe extends into the interior of the well box assembly. The oil pump is also provided with a sampling port, and the oil pump can draw the lubricating oil in the well box assembly to the sampling port through the well box oil suction pipe, and the sampling port is used to sample the lubricating oil to detect the state of the lubricating oil.

[0012] Furthermore, the temperature sensor is arranged in the stern shaft bearing seat through a fixing bracket.

[0013] Furthermore, a liquid level gauge is embedded in the side wall of the upper gear box assembly, and a liquid level sensor is provided on the top of the well box assembly. The liquid level gauge and the liquid level sensor are used to observe and monitor the amount of lubricating oil in the upper gear box assembly and the well box assembly, respectively.

[0014] Furthermore, the liquid level meter and the liquid level sensor are both equipped with an audible and visual alarm device, and the audible and visual alarm device is used to give an audible and visual alarm when the amount of lubricating oil exceeds a range value.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides temperature sensors in the lower gear box and the stern shaft bearing seat. When the rudder propeller rotates 360 degrees underwater, the temperature sensor can transmit the electrical signal to the external control box in real time through the signal transmission device, so that the wiring of the temperature sensor will not be entangled due to the rotation while monitoring the bearing temperature, and the sealing of the wiring of the temperature sensor is ensured; The lubricating oil of the present invention is transported to the sampling port through a screw pump and an oil pump. Since the lubrication is continuously circulated inside, the stern shaft lubricating oil sample can be extracted in real time, on the move, and without stopping the machine, thereby realizing the monitoring of the lubricating oil status. The present invention can detect the bearing wear state through the measuring hole without disassembling the stern shaft or the propeller, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a stern shaft state monitoring system of an omni-rotating propeller in an embodiment of the present invention; In the figure: 1-upper gearbox assembly, 2-well box assembly, 3-lower gearbox assembly, 4-temperature sensor, 5-fixed bracket, 6-rudder column, 7-support ring, 8-stern seal assembly, 801-bushing, 802-housing, 9-junction box, 10-signal transmission device, 11-scarf cover stuffing box, 12-liquid level gauge, 13-liquid level sensor, 14-stern shaft, 15-measuring hole, 16-stern shaft bearing seat, 17-screw pump, 18-propeller, 19-conical body, 20-upper gearbox bearing seat, 21-oil pump, 22-well box suction pipe, 23-sampling port, 24-input shaft, 25-transmission shaft, 26-first conical wheel, 27-second conical wheel, 28-third conical wheel, 29-fourth conical wheel. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] Example 1

[0019] like Figure 1 As shown, an embodiment of the present invention provides a stern shaft state monitoring system for an azimuth propeller. In this embodiment, the azimuth propeller includes an upper gearbox assembly 1, a well box assembly 2, a rudder column 6 and a lower gearbox assembly 3 from top to bottom, and the upper gearbox assembly 1 is partially embedded in the well box assembly 2. The upper end of the rudder column 6 extends into the well box assembly 2 and is connected to the cone 19, and the lower end is connected to the lower gearbox assembly 3, and the rudder column 6 and the lower gearbox assembly 3 can be driven to rotate together through the cone 19.

[0020] A screw pump 17 is provided in the steering column 6 , and the screw pump 17 allows the lubricating oil to circulate continuously in the lower gear box assembly 3 , the well box assembly 2 , and the upper gear box assembly 1 .

[0021] A stern shaft bearing seat 16 is provided in the lower gearbox assembly 3, and a stern shaft 14 is sleeved in the stern shaft bearing seat 16. One end of the stern shaft 14 extends to the outside of the lower gearbox assembly 3 and is connected to the propeller 18. The stern shaft 14 is also connected to the power mechanism, and can drive the propeller 18 to rotate together when driven by the power mechanism.

[0022] The power mechanism specifically includes an input shaft 24 and a transmission shaft 25. The input shaft 24 is arranged in the upper gearbox assembly 1, and is sleeved with a first conical wheel 26 in the circumferential direction. The transmission shaft 25 is arranged in the steering column 6, and the upper end extends into the upper gearbox assembly 1 to connect with the second conical wheel 27, and the lower end extends into the lower gearbox assembly 3 to connect with the third conical wheel 28. The stern shaft 14 is sleeved with a fourth conical wheel 29, the first conical wheel 26 is meshed with the second conical wheel 27, and the third conical wheel 28 is meshed with the fourth conical wheel 29. The transmission shaft 25 is located at the junction of the upper gearbox assembly 1 and the well box assembly 2 and is sleeved with an upper gearbox bearing seat 20, which can provide good support for the transmission shaft 25.

[0023] Therefore, the input shaft 24 is driven by external power to rotate, thereby driving the first conical wheel 26 to rotate. Since the first conical wheel 26 is meshed with the second conical wheel 27, the first conical wheel 26 drives the transmission shaft 25 to rotate through the second conical wheel 27. The transmission shaft 25 drives the fourth conical wheel 29 meshed with the third conical wheel 28 to rotate through the third conical wheel 28, thereby finally transmitting the stern shaft 14 and the propeller 18. On the basis of the above structure, the stern shaft state monitoring system of this embodiment includes a signal transmission device 10, a temperature sensor 4 and a junction box 9. The signal transmission device 10 is divided into a stationary ring part and a dynamic ring part. The stationary ring part and the dynamic ring part are rotationally connected. In this embodiment, the rotation connection method is a bearing connection. The stationary ring part is arranged on the upper gear box bearing seat 20. The upper gear box bearing seat 20 is provided with a key. The stationary ring part is arranged in the key to ensure that the stationary ring part remains stationary. The dynamic ring part is arranged on the cone 19 through the support ring 7, and it rotates 360° with the cone 19.

[0024] The junction box 9 is arranged on the cone 19, and the temperature sensor 4 is installed in the stern shaft bearing seat 16 through a fixed bracket. The temperature sensor 4 is connected to a sensor cable, and a protective cover is arranged outside the sensor cable to avoid friction between the cable and internal parts, and to avoid contact between the cable and oil. The sensor cable and the protective cover pass through the steering column 6 and the support ring 7 in turn and extend to the junction box 9 through the stuffing box. The provision of the stuffing box can avoid contact between the sensor terminal and oil. The static coil part and the dynamic coil part are also connected to the signal transmission cable. The signal transmission cable of the dynamic coil part extends to the junction box 9 and is connected to the sensor cable, and the signal transmission cable of the static coil part is connected to the external control box through the scarf cover stuffing box 11.

[0025] The above wiring method can prevent the sensor cable and terminal of the temperature sensor from contacting the oil, which ensures smooth signal transmission and effectively improves the service life of the sensor. The sensor cable will not be entangled due to the rotation of the rudder propeller, and the overall safety of the system is improved.

[0026] The working principle of this embodiment includes: the temperature sensor 4 monitors the temperature inside the lower gear box assembly 3 and the stern shaft bearing seat 16, and transmits the monitoring signal to the dynamic part of the signal transmission device through the sensor cable, and then transmits it to the external control box through the static ring part of the signal transmission device 10 for the staff to check.

[0027] Example 2

[0028] On the basis of Example 1, in the actual operation of the azimuth propeller, the stern shaft may experience abnormal vibration, and when it vibrates abnormally, it may collide with the bearing sleeved on the stern shaft, thereby causing wear to the bearing.

[0029] Therefore, the present embodiment also includes a stern seal assembly 8, which includes a shell 802 and a bushing 801. The bushing 801 is arranged on the stern shaft 14, and the shell 802 is sleeved on the outer periphery of the bushing 801 and is connected to the lower gear box assembly 3. A protective cover is provided at the location where the stern shaft 14 extends to the outside of the lower gear box assembly 3. A measuring hole 15 is provided on the protective cover. The measuring hole 15 is used to insert a measuring tool. The gap between the shell 802 and the bushing 801 is measured by the measuring tool. In the present embodiment, the measuring tool is a vernier caliper. The degree of wear of the bearing can be known through the gap between the shell 802 and the bushing 801, thereby realizing the monitoring of abnormal vibration of the stern shaft to a certain extent.

[0030] In this embodiment, a lip seal is used between the housing 802 and the bushing 801, and the lip seal is a split seal, so that the lip seal at any position can be easily replaced.

[0031] Example 3

[0032] On the basis of Example 2, this embodiment further provides an oil pump 21 outside the well box assembly 2, the oil pump 21 is connected to the well box oil suction pipe 22, the well box oil suction pipe 22 extends to the inside of the well box assembly 2, and the oil pump 21 is also provided with a sampling port 23. The oil pump 21 can draw the lubricating oil in the well box assembly 2 to the sampling port 23 through the well box oil suction pipe 22, and the staff can sample the lubricating oil through the sampling port 23 to detect the state of the lubricating oil.

[0033] Example 4

[0034] On the basis of Example 3, a liquid level meter 12 is also embedded in the side wall of the upper gearbox assembly 1 of this embodiment, and a liquid level sensor 13 is provided on the top of the well box assembly 2. The liquid level meter 12 and the liquid level sensor 13 are used to observe and monitor the amount of lubricating oil in the upper gearbox assembly 1 and the well box assembly 2 respectively.

[0035] In some embodiments, the liquid level meter 12 and the liquid level sensor 13 are both equipped with an audible and visual alarm device, which can give an audible and visual alarm when the amount of lubricating oil exceeds a range value.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A stern shaft state monitoring system for an omni-rotating propeller, characterized in that: The fully rotating rudder propeller comprises an upper gearbox assembly, a well box assembly, a rudder column and a lower gearbox assembly; The upper gearbox assembly is partially embedded in the well box assembly, the lower end of the steering column is connected to the lower gearbox assembly, and the upper end extends into the well box assembly and is connected to the cone, and the cone can drive the steering column and the lower gearbox assembly to rotate together; the lower gearbox assembly is provided with a stern shaft bearing seat, and the stern shaft bearing seat is sleeved with a stern shaft; The monitoring system comprises a signal transmission device, a temperature sensor and a junction box, wherein the signal transmission device is divided into a stationary coil part and a dynamic coil part, wherein the stationary coil part and the dynamic coil part are rotationally connected, wherein the dynamic coil part is arranged on a cone, wherein the stationary coil part is arranged on the upper gearbox assembly, and wherein both the stationary coil part and the dynamic coil part are connected with a signal transmission cable; The junction box is arranged on the cone, the temperature sensor is arranged in the stern shaft bearing seat, the temperature sensor is connected with a sensor cable, the sensor cable passes through the steering column and extends into the junction box, the signal transmission cable of the moving coil part extends into the junction box and is connected with the sensor cable, and the signal transmission cable of the stationary coil part is connected with an external control box.

2. The stern shaft state monitoring system of the fully rotating propeller according to claim 1 is characterized in that: One end of the stern shaft extends to the outside of the lower gear box assembly and is connected to the propeller. The stern shaft is connected to the power mechanism and can drive the propeller to rotate together when driven by the power mechanism. The power mechanism includes an input shaft and a transmission shaft. The input shaft is arranged in the upper gear box assembly through a bearing, and is circumferentially sleeved with a first conical wheel. The transmission shaft is arranged in a steering column, and the upper ends of the transmission shaft extend into the upper gear box assembly to be connected with the second conical wheel, and the lower ends extend into the lower gear box assembly to be connected with the third conical wheel. The stern shaft is circumferentially sleeved with a fourth conical wheel, the first conical wheel is meshed with the second conical wheel, and the third conical wheel is meshed with the fourth conical wheel.

3. The stern shaft state monitoring system of the fully rotating propeller according to claim 2 is characterized in that: The transmission shaft is located at the junction of the upper gear box assembly and the well box assembly and is sleeved with an upper gear box bearing seat. The stationary ring part is arranged on the upper gear box bearing seat, and the dynamic ring part is connected to the cone through a support ring.

4. The stern shaft state monitoring system of the fully rotating propeller according to claim 1 is characterized in that: The signal transmission cable of the static ring part is connected to the external control box through a scarf cover stuffing box.

5. The stern shaft state monitoring system of the fully rotating propeller according to claim 1, characterized in that: The sensor cable is covered with a protective sleeve, and the sensor cable and the protective sleeve pass through the steering column and the support ring in sequence and then extend into the junction box through the stuffing box.

6. The stern shaft state monitoring system of the fully rotating propeller according to claim 1 is characterized in that: The stern shaft is sleeved with a stern sealing assembly, the stern sealing assembly comprises a shell and a bushing, and a lip seal is used between the shell and the bushing; The bushing is arranged on the stern shaft, the shell is sleeved on the outer periphery of the bushing and is connected to the lower gear box assembly. A protective cover is provided at the place where the stern shaft extends to the outside of the lower gear box assembly. A measuring hole is opened on the protective cover. The measuring hole is used to insert a measuring tool. The measuring tool is used to measure the gap between the shell and the bushing.

7. The stern shaft state monitoring system of the fully rotating propeller according to claim 1 is characterized in that: A screw pump is provided in the steering column, and the screw pump is used to drive the lubricating oil to circulate continuously in the lower gear box assembly, the well box assembly and the upper gear box assembly; An oil pump is provided outside the well box assembly, and the oil pump is connected to a well box oil suction pipe, and the well box oil suction pipe extends into the interior of the well box assembly. The oil pump is also provided with a sampling port, and the oil pump can draw the lubricating oil in the well box assembly to the sampling port through the well box oil suction pipe, and the sampling port is used to sample the lubricating oil to detect the state of the lubricating oil.

8. The stern shaft state monitoring system of the fully rotating propeller according to claim 1, characterized in that: The temperature sensor is arranged in the stern shaft bearing seat through a fixing bracket.

9. The stern shaft state monitoring system of the fully rotating propeller according to claim 1, characterized in that: A liquid level gauge is embedded in the side wall of the upper gear box assembly, and a liquid level sensor is provided on the top of the well box assembly. The liquid level gauge and the liquid level sensor are used to observe and monitor the amount of lubricating oil in the upper gear box assembly and the well box assembly respectively.

10. The stern shaft state monitoring system of the fully rotating propeller according to claim 9, characterized in that: The liquid level meter and the liquid level sensor are both equipped with an audible and visual alarm device, which is used to give an audible and visual alarm when the amount of lubricating oil exceeds a range value.

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