Auxiliary device for propeller static balance test
By designing the auxiliary device for propeller static balance testing, and using auxiliary brackets and internal bearings to simulate the ship's drive shaft, the problem of low efficiency of propeller static balance testing is solved, and the test effect of high accuracy and wide adaptation range is achieved.
Patent Information
- Application Number
- CN202323558721.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The prior art is difficult to quickly and accurately detect whether the propeller is in a static equilibrium state, resulting in low maintenance efficiency.
Design an auxiliary device for the static balance test of propeller, including two symmetrical auxiliary brackets, shaft support seats, shaft, support bearings and internal bearings. These components simulate the ship's drive shaft to ensure that the propeller rotates stably during the test, using support and Connecting rods improve measurement accuracy.
It realizes the propeller static balance test with simple structure, convenient operation, high measurement accuracy and wide adaptation range, and can quickly detect the static balance state of the propeller and improve maintenance efficiency.
Smart Images
Figure CN222336642U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of propeller balance testing, in particular to an auxiliary device for propeller static balance testing. Background Art
[0002] The propeller is generally the driving rotor structure of the ship. The static balance of the propeller is an important parameter standard for testing whether the propeller is qualified. The propeller will experience certain wear and tear when running for a long time. Every certain running time, the propeller structure needs to be regularly maintained. After the maintenance is completed, the propeller needs to be statically balanced. In order to quickly detect whether the propeller is in static balance, it is necessary to design an auxiliary device that can quickly test the propeller. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide an auxiliary device for propeller static balance test, which has the characteristics of simple structure, convenient operation, high measurement accuracy, wide adaptation range, etc.
[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide an auxiliary device for static balance test of a propeller, comprising an auxiliary bracket, a rotating shaft support seat and a rotating shaft, wherein there are two auxiliary brackets arranged symmetrically on the left and right, and the upper ends of the auxiliary brackets are each provided with a rotating shaft support seat, and the upper ends of the rotating shaft support seats are provided with a horizontally penetrating rotating shaft installation groove, and a bearing installation groove is provided in the middle of the rotating shaft installation groove, and a rotating shaft is provided between the two rotating shaft support seats, and support bearings are installed at both ends of the rotating shaft, and the support bearings are installed in the bearing installation groove, and a propeller is sleeved and installed in the middle of the rotating shaft, and a first internal bearing is installed in the right end of the propeller, and a second internal bearing is installed in the left part of the propeller.
[0005] In the technical solution, two auxiliary brackets are used to support the rotating shaft, and the rotating shaft is used to simulate the driving rotating shaft of a ship. A rotating shaft support seat is provided to install and position the two ends of the rotating shaft so that the rotating shaft can rotate stably. Two supporting bearings are installed on the two ends of the rotating shaft so that the rotating shaft can rotate stably. The first internal bearing and the second internal bearing are installed so that the propeller can rotate stably.
[0006] As a supplement to the present technical solution, the first internal bearing is sleeved on the rotating shaft, and the outer ring support of the first internal bearing is fitted with the inner ring of the propeller. In the present technical solution, the first internal bearing is provided to fit and support the inner ring of the propeller.
[0007] As a supplement to the present technical solution, a bearing clamp is installed on the left side of the propeller, and the right side of the bearing clamp is in contact with the left side of the propeller. In the present technical solution, the bearing clamp is provided to support the second internal bearing to prevent the second internal bearing from shifting during rotation.
[0008] As a supplement to the present technical solution, a plurality of connecting rods are provided between the bearing clamp plate and the second inner bearing, and the connecting rods are provided to ensure the firmness of the connection between the bearing clamp plate and the second inner bearing.
[0009] Beneficial effects: The utility model relates to an auxiliary device for propeller static balance test, in which two auxiliary brackets are used to support the rotating shaft, the rotating shaft is used to simulate the driving rotating shaft of a ship, and a rotating shaft support seat is provided to install and position the two ends of the rotating shaft so that the rotating shaft can rotate stably, and two supporting bearings are installed on the two ends of the rotating shaft so that the rotating shaft can rotate stably, and a first internal bearing and a second internal bearing are installed so that the propeller can rotate stably, and the utility model has the characteristics of simple structure, convenient operation, high measurement accuracy, wide adaptation range, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural view of the utility model.
[0011] Illustration: 1. Auxiliary bracket, 2. Rotating shaft support seat, 3. Rotating shaft, 4. Support bearing, 5. First internal bearing, 6. Bearing clamp, 7. Second internal bearing, 8. Connecting rod, 9. Propeller. DETAILED DESCRIPTION
[0012] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.
[0013] The embodiment of the utility model relates to an auxiliary device for propeller static balance test, such as Figure 1As shown, it includes an auxiliary bracket 1, a shaft support seat 2 and a shaft 3. There are two auxiliary brackets 1 arranged symmetrically on the left and right. The upper ends of the auxiliary brackets 1 are each provided with a shaft support seat 2. The upper ends of the shaft support seats 2 are provided with a transversely penetrating shaft mounting groove, and a bearing mounting groove is provided in the middle of the shaft mounting groove. A shaft 3 is provided between the two shaft support seats 2. Support bearings 4 are installed at both ends of the shaft 3, and the support bearings 4 are installed in the bearing mounting grooves. A propeller 9 is sleeved and installed in the middle of the shaft 3. A first internal bearing 5 is installed in the right end of the propeller 9, and a second internal bearing 7 is installed in the left part of the propeller 9.
[0014] In the present technical solution, two auxiliary brackets 1 are used to support the rotating shaft 3, and the rotating shaft 3 is used to simulate the driving rotating shaft of the ship. The rotating shaft support seat 2 is provided to install and position the two ends of the rotating shaft 3, so that the rotating shaft 3 can rotate stably. Two supporting bearings 4 are installed on the two ends of the rotating shaft 3 to enable the rotating shaft 3 to rotate stably. The first internal bearing 5 and the second internal bearing 7 are installed to enable the propeller 9 to rotate stably.
[0015] As a supplement to the present technical solution, the first internal bearing 5 is sleeved on the rotating shaft 3, and the outer ring support of the first internal bearing 5 is in contact with the inner ring of the propeller 9. In the present technical solution, the first internal bearing 5 is provided to provide in contact support for the inner ring of the propeller 9.
[0016] As a supplement to the present technical solution, a bearing clamp 6 is installed on the left side of the propeller 9, and the right side of the bearing clamp 6 is in contact with the left side of the propeller 9. In the present technical solution, the bearing clamp 6 is provided to support the second internal bearing 7 to prevent the second internal bearing 7 from shifting during rotation.
[0017] As a supplement to the present technical solution, a plurality of connecting rods 8 are provided between the bearing clamp plate 6 and the second inner bearing 7 , and the connecting rods 8 are provided to ensure the firmness of the connection between the bearing clamp plate 6 and the second inner bearing 7 .
[0018] Example
[0019] When conducting a static balance test on the propeller 9, first install the first internal bearing 5 and the second internal bearing 7 on both ends of the propeller 9, then install the bearing clamp 6 on the right side of the propeller 9, and after completion, connect the bearing clamp 6 and the second internal bearing 7 through a connecting rod 8, and then pass the rotating shaft horizontally through the bearing clamp 6, the second internal bearing 7 and the first internal bearing 5. After completion, lift the entire assembly between the two auxiliary brackets 1 through a gantry crane, and then install two support bearings 4 on both ends of the rotating shaft 3, and finally lower the assembly so that the two support bearings 4 can be installed on the rotating shaft support seat 2.
[0020] After the installation is completed, a test is carried out, with one blade of the propeller 9 as the reference for the 0° angle, and then the safety performance of the device is checked. After completion, the propeller 9 is manually rotated, and the propeller 9 rotates freely for at least one circle. Wait for the propeller 9 to stop rotating, record the static angle, and then rotate the propeller 9 multiple times, measure the static angles multiple times. If the static angles are irregularly distributed, the propeller 9 is statically balanced; if the static angles are within a relatively small range of variation, the propeller 9 is statically unbalanced. According to the angle of the propeller when it is statically unbalanced, adjust the propeller static balancing auxiliary device, or repair the propeller until the propeller is statically balanced.
[0021] A plurality of multi-layered pads arranged in a stacked manner are installed on the bottom of the rotating shaft support seat 2, so that the height of the rotating shaft support seat 2 can be adjusted to ensure that the propeller 9 can be arranged horizontally.
[0022] The above is a detailed introduction to an auxiliary device for propeller static balance test provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. An auxiliary device for propeller static balance test, characterized in that: The invention comprises an auxiliary bracket (1), a rotating shaft support seat (2) and a rotating shaft (3). The auxiliary brackets (1) are arranged symmetrically on the left and right. The upper ends of the auxiliary brackets (1) are each provided with a rotating shaft support seat (2). The upper ends of the rotating shaft support seats (2) are provided with a rotating shaft installation groove which is transversely penetrated. A bearing installation groove is provided in the middle of the rotating shaft installation groove. A rotating shaft (3) is provided between the two rotating shaft support seats (2). Support bearings (4) are installed at both ends of the rotating shaft (3). The support bearings (4) are installed in the bearing installation groove. A propeller (9) is sleeved and installed in the middle of the rotating shaft (3). A first internal bearing (5) is installed in the right end of the propeller (9), and a second internal bearing (7) is installed in the left part of the propeller (9).
2. The auxiliary device for propeller static balance test according to claim 1, characterized in that: The first internal bearing (5) is sleeved on the rotating shaft (3), and the outer ring of the first internal bearing (5) is in contact with the inner ring of the propeller (9).
3. The auxiliary device for propeller static balance test according to claim 1, characterized in that: A bearing clamp (6) is installed on the left side of the propeller (9), and the right side of the bearing clamp (6) is in contact with the left side of the propeller (9).
4. The auxiliary device for propeller static balance test according to claim 3, characterized in that: A plurality of connecting rods (8) are arranged between the bearing clamping plate (6) and the second inner bearing (7).