Pod propulsor detection test bench

Abstract

The utility model discloses a pod propulsor detection test bench which comprises a propulsor hanging bracket, a propulsor main shaft loading device and a drive loading device. The pod propeller is installed on the gantry crane in a lifting mode, loading is carried out in all directions through the oil cylinder, resistance from all different directions can be simulated, torque loading is carried out through the motor, the loading end is connected through the universal joint to protect a motor main shaft, installation is easy and convenient, the structure is simple and reliable, and simulation of various different complex working conditions can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of marine propeller detection, in particular to a podded propeller detection test bench. Background Technique

[0002] Ship electric propulsion is a propulsion method that converts the mechanical energy generated by the ship propulsion prime mover into electrical energy and drives the ship propeller with an electric motor. There are two forms: conventional propellers and podded propellers. For podded propellers, the motor and the propeller are directly connected and can rotate horizontally by 360 degrees, forming an independent propulsion module, which is hung at the bottom of the hull. It can be divided into front propeller (traction) type, rear propeller (push) type, tandem type, etc., and there are also various types of propellers such as contra-rotating propellers and ducted propellers.

[0003] The structure of the podded propeller is complex and the technical differences are extremely large. The marine podded propeller is calculated, designed and manufactured by the manufacturer. Generally, the manufacturer does not conduct equipment joint tests before leaving the factory, and only verifies through computer simulation. However, simple computer simulation is not comprehensive for verifying the software and hardware functions of the entire propulsion device. First of all, any simulation model can only approximate the actual system and cannot be completely consistent, and the simulation method cannot expose the defects in the production and manufacturing process of the equipment; and directly conducting sea trials will be severely restricted by factors such as the shipbuilding cycle, cost, and test conditions. Especially for large marine podded propellers above 10MW, the trial-and-error cost is extremely high. Secondly, at present, the manufacturer has not fully mastered the technical characteristics of the marine podded propeller. Therefore, tests must be carried out before the marine podded propeller is installed on the ship. At present, there are few support devices that can be applied to the test methods of large marine podded propellers with various different heights. Content of the Utility Model

[0004] The utility model provides a podded propeller detection test bench, which is installed by a lifting method, loaded by an oil cylinder and a motor, and performs performance detection on the marine podded propeller. It is simple to install, the structure is simple and reliable, and it can simulate a variety of different complex working conditions.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] The podded propeller detection test bench includes a propeller mounting frame, a propeller motor spindle loading device, and a propeller motor drive loading device; the propeller spindle loading device and the propeller drive loading device are connected by a universal joint, and the propeller spindle loading device is rigidly connected to the podded propeller spindle;

[0007] Further, the thruster mounting frame includes a thruster mounting base, a thruster mounting lifting platform, a thruster gantry, a gantry lifting platform, and a thruster lifting frame. The thruster lifting platform is installed on the convex platform of the thruster mounting base and moves back and forth through a slider guide rail. The thruster gantry is fixed to the thruster mounting base. The gantry lifting platform is installed on the thruster gantry and moves back and forth through a guide rail. The thruster lifting frame is installed on the gantry lifting platform and can move up and down through a guide rail. The pod thruster is installed on the thruster lifting frame.

[0008] Further, the thruster motor spindle loading device includes a coupling, a coupling base, a coupling support, and an oil cylinder. The coupling base and the coupling support are connected by 10 of the oil cylinders. The coupling connects to the pod thruster spindle. The telescoping of the oil cylinder can apply a load to the thruster spindle.

[0009] Further, the thruster drive loading device includes a loading motor base, a loading motor, and a coupling universal joint. The loading motor is installed on the loading motor base. The loading motor spindle is connected to the coupling through the coupling universal joint, which can prevent the loading motor spindle from being damaged by excessive radial loads.

[0010] Further, the thruster lifting platform is installed on the thruster mounting base through a guide rail and can lift the pod thruster to move back and forth to assist in docking with the thruster lifting frame. The thruster lifting frame and the gantry lifting platform are installed on the thruster gantry through a guide rail and can move back and forth and up and down to assist in docking with the coupling of the thruster spindle loading device.

[0011] Further, in the thruster motor spindle loading device, the coupling support is loaded from different directions by 10 of the oil cylinders to achieve the loading of the thruster motor spindle.

[0012] Further, in the thruster drive loading device, the loading motor spindle is connected to the coupling through the coupling universal joint. When the thruster spindle is subjected to a radial load, it will deform and become eccentric. The coupling universal joint can prevent the load from being transmitted to the spindle of the loading motor to avoid damage.

[0013] Further, the thruster lifting platform lifts the pod thruster to move it directly below the thruster lifting frame. The thruster lifting frame descends to dock and install with the pod thruster. After the thruster lifting frame moves the pod thruster to a designated position, its spindle is docked and installed with the coupling.

[0014] Further, in the propeller motor main shaft loading device, the coupling support is installed in the coupling base through 10 oil cylinders. The coupling is located at the center of the coupling support, and the oil cylinders apply load to it.

[0015] Further, in the propeller drive loading device, the loading motor main shaft is connected to the coupling through the coupling universal joint to achieve flexible connection and protect the loading motor main shaft.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] For the podded propeller test bench of the present utility model, the propeller is sent under the hoisting frame by the lifting platform, and the installation is simple; the main shaft loading adopts the method of installing oil cylinders at multiple positions, which can simulate the resistance from various directions; the loading end adopts a universal joint to form a flexible connection to protect the loading motor main shaft; the overall structure is simple, safe and reliable. Description of the Drawings

[0018] Figure 1 is the external structure schematic diagram of the present utility model;

[0019] Figure 2 is the structure schematic diagram of the propeller mounting frame of the present utility model;

[0020] Figure 3 is the schematic diagram of the propeller motor main shaft loading device of the present utility model;

[0021] Figure 4 is the schematic diagram of the propeller motor drive loading device of the present utility model.

[0022] In the figure: 1. Mounting frame base; 2. Guide rail; 3. Propeller lifting platform; 4. Podded propeller; 5. Propeller gantry; 6. Propeller hoisting frame; 7. Gantry hoisting platform; 8. Coupling base; 9. Oil cylinder; 10. Coupling support; 11. Coupling; 12. Drive loading bottom plate; 13. Loading motor base; 14. Coupling universal joint; 15. Loading motor main shaft; 16. Loading motor. Detailed Embodiments

[0023] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figures 1 to 4As shown in the figure, a pod thruster detection test bench includes a thruster mounting frame, a thruster motor spindle loading device, and a thruster motor drive loading device; the thruster spindle loading device is connected to the thruster drive loading device through a universal joint, and the thruster spindle loading device is rigidly connected to the pod thruster spindle;

[0025] The thruster mounting frame includes a thruster mounting base 1, a thruster mounting lifting platform 3, a thruster gantry 5, a gantry lifting platform 7, and a thruster lifting frame 6. The thruster lifting platform 3 is installed on the convex platform of the thruster mounting base 1; the thruster gantry 5 is fixed to the thruster mounting base 1. The gantry lifting platform 7 is installed on the thruster gantry 5 and can move back and forth through a guide rail. The thruster lifting frame 6 is installed on the gantry lifting platform 7 and can move up and down through a guide rail. The pod thruster 4 is installed on the thruster lifting frame 6; the thruster lifting platform 3 is installed on the thruster mounting base 1 through a guide rail 2 and can lift the pod thruster 4 to move back and forth to assist in docking with the thruster lifting frame 6; the thruster lifting frame 6 and the gantry lifting platform 7 are installed on the thruster gantry 5 through a guide rail and can move back and forth and up and down to assist in docking with the coupling 11 of the thruster spindle loading device.

[0026] The thruster motor spindle loading device includes a coupling 11, a coupling base 8, a coupling support 10, and an oil cylinder 9. The coupling base 8 and the coupling support 10 are connected by ten oil cylinders 9. The coupling 11 is connected to the spindle of the pod thruster 4; the telescopic movement of the oil cylinder 9 can apply a load to the thruster spindle, and the ten oil cylinders 9 can load the coupling support 10 from different directions to achieve the loading of the thruster motor spindle.

[0027] The thruster drive loading device includes a loading motor base 13, a loading motor 16, and a coupling universal joint 14; the loading motor 16 is installed on the loading motor base 13, and the loading motor spindle 15 is connected to the coupling 11 through the coupling universal joint 14. When the thruster spindle is subjected to a radial load, it will deform and become eccentric. The coupling universal joint 14 can prevent excessive radial load from being transmitted to the loading motor spindle 15 to avoid damage.

[0028] The thruster lifting platform 3 lifts the pod thruster 4 and moves it to directly below the thruster lifting frame 6. The thruster lifting frame 6 descends and docks with the pod thruster 4 for installation. After the thruster lifting frame 6 moves the pod thruster 4 to a designated position, its spindle is docked and installed with the coupling 11.

[0029] In the propeller motor spindle loading device, the coupling support 10 is installed in the coupling base 8 through ten oil cylinders 9. The coupling 11 is located at the center of the coupling support 10, and the oil cylinders 9 apply load to it.

[0030] In the propeller drive loading device, the loading motor spindle 15 is connected to the coupling 11 through the coupling universal joint 14 to achieve flexible connection and protect the loading motor spindle 15.

[0031] The podded propeller detection and test method of the present invention includes the following steps:

[0032] Step 1: The podded propeller is hoisted to the propeller lifting platform 3 by a traveling crane. The propeller lifting platform 3 moves the podded propeller to directly below the propeller hoisting frame 6, and the propeller hoisting frame 6 descends to complete the docking and installation with the podded propeller 4.

[0033] Step 2: The propeller hoisting frame 6 rises and moves to the propeller motor spindle installation position along with the gantry hoisting platform 7 to complete the docking of the propeller motor spindle and the coupling 11.

[0034] Step 3: After the installation is completed, the oil cylinders 9 are used to load the motor spindle of the podded propeller 4 in all directions according to requirements to simulate the resistance of water flow from all directions to the propeller in water. The drive loading motor 15 is used to perform torsional loading on the spindle of the podded propeller 4 to simulate the reaction force of water flow on the propeller during the working process of the propeller.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pod propulsion test bench, characterized in that: It includes a propeller mounting frame, a propeller motor main shaft loading device, and a propeller motor drive loading device; the propeller motor main shaft loading device is connected to the propeller drive loading device through a universal joint, and the propeller main shaft loading device is rigidly connected to the pod propeller main shaft; The thruster mounting frame includes a thruster mounting base, a thruster mounting lifting platform, a thruster gantry, a gantry hoisting platform, and a thruster hoisting frame. The thruster lifting platform is mounted on the boss of the thruster mounting base and moves forward and backward through a slider guide rail; the thruster gantry is fixed on the thruster mounting base, the gantry hoisting platform is mounted on the thruster gantry and moves forward and backward through a guide rail, the thruster hoisting frame is mounted on the gantry hoisting platform and can move up and down through the guide rail, and the pod thruster is mounted on the thruster hoisting frame; The thruster motor main shaft loading device comprises a coupling, a coupling base, a coupling support, and an oil cylinder. The coupling base and the coupling support are connected via 10 oil cylinders. The coupling is connected to the pod thruster main shaft. The extension and retraction of the oil cylinder can apply load to the thruster main shaft. The thruster driven loading device includes a loading motor base, a loading motor, and a coupling universal joint; the loading motor is installed on the loading motor base, and the loading motor main shaft is connected to the coupling through the coupling universal joint, which can prevent the loading motor main shaft from being damaged by excessive radial load.

2. The pod propulsion test bench according to claim 1, characterized in that: The thruster lifting platform is installed on the thruster mounting base through guide rails, and can lift the pod thruster to move forward and backward, and assist in docking with the thruster lifting frame; the thruster lifting frame and the gantry lifting platform are installed on the thruster gantry through guide rails, and can move forward and backward and up and down, and assist in docking with the coupling of the thruster main shaft loading device.

3. The pod propulsion test bench according to claim 1, characterized in that: In the thruster motor main shaft loading device, the thruster motor main shaft is loaded by loading the coupling support from different directions through the 10 oil cylinders.

4. The pod propulsion test bench according to claim 1, characterized in that: In the thruster driven loading device, the loading motor main shaft is connected to the coupling via the coupling universal joint. When the thruster main shaft is subjected to radial load, deformation and eccentricity will occur. The coupling universal joint can prevent the load from being transmitted to the loading motor main shaft to avoid damage.

5. The pod propulsion test bench according to claim 2, characterized in that: The propeller lifting platform lifts the pod propeller and moves it to just below the propeller lifting frame, and the propeller lifting frame descends to dock and install with the pod propeller. After the propeller lifting frame moves the pod propeller to a specified position, its main shaft and coupling are docked and installed.

6. The pod propulsion test bench according to claim 3, characterized in that: In the thruster motor main shaft loading device, the coupling support is installed in the coupling base through 10 oil cylinders, the coupling is located at the center of the coupling support, and the oil cylinders apply load to it.

7. The pod propulsion test bench according to claim 4, characterized in that: In the thruster driven loading device, the main shaft of the loading motor is connected to the coupling via the coupling universal joint to achieve a flexible connection and protect the main shaft of the loading motor.

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