Propeller for testing mooring power of outboard engine
By designing a propeller for mooring power for outboard engines with shock absorption structure and water-spraying blades, the problem of increasing engine load and lower speed in the mooring test is solved, and accurate judgment is achieved under mooring conditions The effect of engine power.
Patent Information
- Application Number
- CN202421313211.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In the mooring test of outboard engines, the propeller cannot move forward like when sailing naturally, resulting in an increase in the load of the engine, and the maximum speed is lower than the rated speed at the maximum power. It is impossible to accurately determine whether the engine's power meets the production requirements. .
A propeller for mooring power testing of outboard units including an internal tooth core and an external paddle disc was designed. The surface of the internal tooth core was equipped with a shock absorbing structure, and the center of the external paddle disc had a mounting hole, and the internal tooth core passed through the shock absorbing structure. Fixed in the installation hole of the outer paddle disc, the outer edge of the outer paddle disc extends out of the outer ring, and several stirring blades are provided on the inner diameter of the outer ring.
With this design, the outboard can provide the same torque during mooring test as when the general propeller is pushed forward, allowing the engine to reach the rated speed at maximum power, thereby accurately determining whether the engine's power meets the standard.
Smart Images
Figure CN222432567U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of outboard motors, and particularly relates to a propeller for testing the mooring power of an outboard motor. Background Art
[0002] At present, the power test method for outboard motors is bench testing, which is only for testing sample machines. How to test the power of each engine during mass production is something that manufacturers must consider. During the mooring test, the outboard motor is fixed on the test stand and will not move forward like it does during natural sailing. This will increase the reaction force on the propeller when pushing the water flow, increase the load on the engine, and at the same time, the maximum speed of the engine will be lower than the rated speed at maximum power, making it impossible to determine whether the engine power meets production requirements. Utility Model Content
[0003] The utility model aims to provide a propeller for testing the mooring power of an outboard motor, so that the engine of the outboard motor can reach the rated speed under the maximum power during the mooring test.
[0004] The technical solution of the utility model is:
[0005] A propeller for testing the mooring power of an outboard motor comprises an inner gear core and an outer propeller disc, wherein the surface of the inner gear core is provided with a shock absorbing structure, the center of the outer propeller disc is provided with a mounting hole, and the inner gear core is fixedly mounted in the mounting hole of the outer propeller disc through the shock absorbing structure.
[0006] Preferably, an outer ring is extended to one side from the outer edge of the outer paddle disk, and a plurality of evenly distributed water stirring blades are arranged on the inner diameter of the outer ring.
[0007] Preferably, the water stirring blade points toward the mounting hole of the outer paddle disc.
[0008] Preferably, the joints between the water stirring blades and the outer ring and the outer paddle disc are provided with chamfered corners.
[0009] Preferably, the end of the water stirring blade is provided with a chamfer.
[0010] Preferably, the disc body, outer ring and water stirring blades of the outer paddle disc are integrally formed.
[0011] Preferably, the shock absorbing structure adopts a rubber sleeve.
[0012] The advantages of the utility model are:
[0013] The utility model discloses a propeller for testing the mooring power of an outboard motor, which is composed of an inner gear core with a shock-absorbing structure and an outer propeller disc. Through the structural design of the outer propeller disc, when the outboard motor is installed with the test propeller for the mooring power test, the same torque as that of a general propeller when it is propelled forward is provided, so that the engine of the outboard motor can reach the rated speed under the maximum power during the mooring test. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0015] Figure 1 It is a cross-sectional view of the propeller of the utility model;
[0016] Figure 2 It is a three-dimensional diagram of the outer propeller disc of the propeller of the utility model. DETAILED DESCRIPTION
[0017] like Figure 1 As shown, the propeller for mooring power test of an outboard motor proposed in the utility model comprises an inner gear core 1 and an outer propeller disc 2, the inner gear core surface is provided with a shock absorbing structure 3, the outer propeller disc center is provided with a mounting hole 21, and the inner gear core 1 is fixedly mounted in the mounting hole 3 of the outer propeller disc through the shock absorbing structure 3. The inner gear core 1 is connected to the motor drive shaft of the outboard motor to drive the outer propeller disc 2 to rotate, and the shock absorbing structure 3 is a rubber sleeve.
[0018] like Figure 2 As shown, an outer ring 22 is extended to one side from the outer edge of the outer paddle disk 2, and a plurality of evenly distributed water stirring blades 23 are arranged on the inner diameter of the outer ring 22.
[0019] The disc body, outer ring 22 and water-stirring blades 23 of the outer propeller disc 2 are integrally formed. The water-stirring blades 23 point to the mounting hole 21 of the outer propeller disc. The joints between the water-stirring blades 23, the outer ring 22 and the outer propeller disc 2 are provided with rounded corners. The ends of the water-stirring blades 23 are provided with chamfers. Through the structural design of the outer propeller disc 2, when the outboard motor is installed with a test propeller for mooring power test, the same torque as that of a general propeller when it is propelled forward is provided, so that the engine of the outboard motor can reach the rated speed at maximum power during the mooring test.
[0020] The propeller of the utility model can be used for batch quality consistency inspection of outboard motors. The outboard motor to be inspected is installed with a test propeller to perform a mooring power test. If the rated speed can be reached at the maximum power of the outboard motor, it is determined that the power meets the standard and the tested product is a qualified product.
[0021] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any modifications made according to the spirit of the main technical solution of the utility model should be included in the protection scope of the utility model.
Claims
1. A propeller for testing the mooring power of an outboard motor, characterized in that: It comprises an inner tooth core and an outer propeller disc, wherein the surface of the inner tooth core is provided with a shock absorbing structure, the center of the outer propeller disc is provided with a mounting hole, and the inner tooth core is fixedly mounted in the mounting hole of the outer propeller disc through the shock absorbing structure.
2. The propeller for testing the mooring power of an outboard motor according to claim 1, characterized in that: The outer edge of the outer paddle disc extends to one side to form an outer ring, and a plurality of evenly distributed water stirring blades are arranged on the inner diameter of the outer ring.
3. The propeller for testing the mooring power of an outboard motor according to claim 2, characterized in that: The water stirring blade points to the mounting hole of the outer paddle disc.
4. The propeller for testing the mooring power of an outboard motor according to claim 3, characterized in that: The joints between the water stirring blades, the outer ring and the outer paddle disc are provided with rounded corners.
5. The propeller for testing the mooring power of an outboard motor according to claim 4, characterized in that: The end of the water stirring blade is provided with a chamfer.
6. The propeller for testing the mooring power of an outboard motor according to claim 5, characterized in that: The disc body, the outer ring and the water stirring blades of the outer paddle disc are integrally formed.
7. The propeller for testing the mooring power of an outboard motor according to claim 1, characterized in that: The shock absorbing structure adopts a rubber sleeve.