CN214748830U - Hub centrifugal load test device - Google Patents
Hub centrifugal load test device Download PDFInfo
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- CN214748830U CN214748830U CN202121229558.9U CN202121229558U CN214748830U CN 214748830 U CN214748830 U CN 214748830U CN 202121229558 U CN202121229558 U CN 202121229558U CN 214748830 U CN214748830 U CN 214748830U
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Abstract
The utility model discloses a propeller hub centrifugal load test device, which comprises a base, a connecting bracket, a propeller hub, a blade simulation piece, a pulley, a steel wire rope and a test oil cylinder, wherein the connecting bracket is fixedly connected with the top of the base, and the propeller hub is fixed at the top of the connecting bracket; the blade simulation pieces are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub; the end, far away from the propeller hub, of each blade simulation piece is rotatably provided with a pulley, the number of the test oil cylinders is two, the test oil cylinders are respectively in one-to-one correspondence with the two blade simulation pieces, the free end part of each test oil cylinder is fixedly provided with a tension sensor, an elastic body of each tension sensor is provided with a connecting roller, and the tension sensor is fixedly connected with the pulley, close to the end of the propeller hub, of the corresponding tension sensor through the steel wire rope in a pulling mode; test hydro-cylinder and force sensor are connected with outside servo control system electricity respectively, the utility model discloses it is experimental convenient, and measuring result is accurate.
Description
Technical Field
The utility model relates to a centrifugal load test device, concretely relates to propeller hub centrifugal load test device.
Background
The hub is an important moving part in the working process of the propeller and bears most of centrifugal load generated by the rotation of the propeller, so the strength performance of the hub needs to be verified through tests. During the processes of fatigue test, static test and stress-strain distribution test of the propeller hub, the propeller hub of the propeller is fixed, so that centrifugal load cannot be generated in a rotating mode.
In the process of the static test of the propeller hub, such as a fatigue test, a static test, a stress-strain distribution test and the like, a reliable applying mode of the centrifugal load test of the propeller hub is important.
Therefore, how to provide a centrifugal load testing device without the need of rotating a hub is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a propeller hub centrifugal load test device just can test the fatigue strength who learns the propeller hub under the propeller hub static state.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a centrifugal load test device for a propeller hub comprises a base, a connecting bracket, the propeller hub, a blade simulation piece, a pulley, a steel wire rope and a test oil cylinder, wherein the connecting bracket is fixedly connected to the top of the base, and the propeller hub is fixedly connected to the top of the connecting bracket; the blade simulation pieces are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub; the end, far away from the propeller hub, of each blade simulation piece is rotatably provided with a pulley, the number of the test oil cylinders is two, the test oil cylinders are respectively arranged in one-to-one correspondence with the two blade simulation pieces, the free end part of each test oil cylinder is fixedly provided with a tension sensor, an elastic body of each tension sensor is provided with a connecting roller, and the tension sensor is fixedly connected with the pulley, close to the end of the propeller hub, of the corresponding pulley through a steel wire rope; and the test oil cylinder and the tension sensor are respectively and electrically connected with an external servo control system.
The utility model has the advantages that: with propeller hub fixed connection on the base, the linking bridge replaces the propeller shaft effect, can reduce test cost, simplify test structure, the relative both sides face of propeller hub sets up the test hydro-cylinder, the paddle simulation piece on the free end of test hydro-cylinder passes through wire rope joint propeller hub, build the rotatory experimental environment of paddle, during the test, only need through the application force load of servo control system control test hydro-cylinder, and two test hydro-cylinders of relative setting alternate action, the simulation produces centrifugal load, accomplish the fatigue strength and detects. The test operation is simple, the results of the fatigue test, the static test and the stress-strain distribution test of the hub can be obtained through the test without actually rotating the hub, the efficiency is high, and the cost is low.
Preferably, the rotating surface of the propeller hub is parallel to the plane where the free end of the test oil cylinder extends and retracts; the rotating surface is a horizontal plane on which the hub and the blades rotate; the installation axis of the connecting roller and the installation axis of the pulley are both horizontally positioned on the rotating surface of the propeller hub.
Preferably, the connecting bracket is of a cylindrical structure, and two ends of the connecting bracket are respectively provided with a connecting flange and are respectively fixedly connected with the base and the propeller hub.
Preferably, a rod frame is fixedly connected to the shell of the test oil cylinder, and the rod frame is fixedly connected to the ground.
Preferably, the steel wire rope is elliptical and is sleeved on the pulley and the connecting roller.
Preferably, the test oil cylinders are horizontally arranged, and the telescopic directions of the free ends of the two corresponding test oil cylinders are collinear with the center of the propeller hub.
Preferably, the test oil cylinder is a servo hydraulic oil cylinder.
Drawings
Fig. 1 is an overall view of a hub centrifugal load test device according to the present invention.
The test platform comprises a base 1, a connecting support 2, a propeller hub 3, a blade simulator 4, a pulley 5, a steel wire rope 6, a test oil cylinder 7, a tension sensor 8, a connecting roller 9 and a rod frame 10.
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 creative work belong to the protection scope of the present invention.
Referring to the attached drawing 1 of the utility model, according to the embodiment of the utility model, a propeller hub centrifugal load test device comprises a base 1, a connecting bracket 2, a propeller hub 3, a blade simulation piece 4, a pulley 5, a steel wire rope 6 and a test oil cylinder 7, wherein the connecting bracket 2 is fixedly connected to the top of the base 1, and the propeller hub 3 is fixedly connected to the top of the connecting bracket 2; the blade simulation pieces 4 are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub 3; the end, far away from the propeller hub 3, of each blade simulation piece 4 is rotatably provided with a pulley 5, two groups of test oil cylinders 7 are arranged and correspond to the two blade simulation pieces 4 one by one respectively, a tension sensor 8 is fixedly arranged at the free end part of each test oil cylinder 7, a connecting roller 9 is arranged on an elastic body of each tension sensor 8, and the tension sensor is fixedly connected with the pulley at the end, close to the propeller hub 3, of each tension sensor through a steel wire rope 6; the test oil cylinder 7 and the tension sensor 8 are respectively electrically connected with an external servo control system.
Specifically, the tension sensor is any one of an S-shaped tension sensor and a plate ring type tension sensor.
In some embodiments, the rotation plane of the hub 3 is parallel to the plane of the free end of the test cylinder 7 in the telescopic direction; the rotating surface is a horizontal plane on which the hub and the blades rotate; the mounting axis of the connecting roller 9 and the mounting axis of the pulley 5 are both horizontally located on the plane of rotation of the hub 3 in order to obtain a measurement of the actual hub rotation.
In some embodiments, the connecting bracket 2 is a cylindrical structure, and has two ends respectively provided with a connecting flange, and is fixedly connected with the base 1 and the hub 3 respectively.
In other embodiments, the rod frame 10 is fixedly connected to the outer shell of the testing cylinder 7, and the rod frame 10 is fixedly connected to the ground, so that the height of the testing cylinder can be conveniently adjusted, and the lead can be conveniently led out.
In other embodiments, the cable 6 is elliptical and is looped over the pulley 5 and the connecting roller 9.
Specifically, the method comprises the following steps. Due to the arrangement of the steel wire rope, the tension of the test oil cylinder is ensured to be collinear with the rotating surface of the propeller hub in the tensile test process, and an accurate test result is obtained.
In other embodiments, the test cylinders 7 are arranged horizontally, and the telescopic directions of the two corresponding test cylinders 7 are collinear with the center of the hub 3, so that an accurate centrifugal load result is ensured.
Specifically, the test oil cylinder 7 is a servo hydraulic oil cylinder, and the size of the centrifugal load can be conveniently adjusted through a servo control system.
The utility model relates to a propeller hub centrifugal load test device produces centrifugal load through two test hydro-cylinder simulations of relative setting, measures fatigue strength, static test and the stress strain distribution of propeller hub. Compared with the traditional rotation test, the limit of torque and motor power is reduced, a larger centrifugal force can be quickly reached, and a measurement result is obtained.
The method comprises the specific test steps that a propeller hub is arranged on a base through a connecting support, the connecting support plays a role of a propeller shaft simulation piece, a propeller sleeve of the propeller hub is provided with a propeller blade simulation piece, the propeller shaft simulation piece is connected with a test oil cylinder through a pulley, a steel wire rope and a tension sensor, the tension sensor can measure the centrifugal load, and the test oil cylinder can control the output load through a servo control system. The pulley can ensure that the stress of the upper steel wire rope and the stress of the lower steel wire rope are consistent, so that the centrifugal load is coaxial with the axis of the hub and the sleeve.
For the device and the using method disclosed by the embodiment, the description is simple because the device and the using method correspond to the method disclosed by the embodiment, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The centrifugal load test device for the propeller hub is characterized by comprising a base (1), a connecting bracket (2), the propeller hub (3), a blade simulation piece (4), a pulley (5), a steel wire rope (6) and a test oil cylinder (7), wherein the connecting bracket (2) is fixedly connected to the top of the base (1), and the propeller hub (3) is fixed to the top of the connecting bracket (2); the blade simulation pieces (4) are grouped in pairs and are respectively and oppositely and fixedly connected to two sides of the propeller hub (3); pulleys (5) are rotatably arranged at one end, far away from the propeller hub (3), of each blade simulation piece (4), two groups of test oil cylinders (7) are arranged and are respectively arranged in one-to-one correspondence with the two blade simulation pieces (4), tension sensors (8) are fixedly arranged at the free end parts of the test oil cylinders (7), connecting rollers (9) are arranged on elastomers of the tension sensors (8), and the tension sensors are fixedly connected with the pulleys at one end, close to the propeller hub (3), of the blade simulation pieces through the steel wire ropes (6); and the test oil cylinder (7) and the tension sensor (8) are respectively and electrically connected with an external servo control system.
2. A hub centrifugal load test device according to claim 1, characterized in that the rotation plane of the hub (3) is parallel to the plane of the free end of the test cylinder (7) in the telescopic direction; the rotating surface is a horizontal plane on which the hub and the blades rotate; the mounting axis of the connecting roller (9) and the mounting axis of the pulley (5) are both horizontally positioned on the rotating surface of the hub (3).
3. A hub centrifugal load test device according to claim 1, wherein the connecting bracket (2) is a cylindrical structure, and two ends of the connecting bracket are respectively provided with a connecting flange and are respectively fixedly connected with the base (1) and the hub (3).
4. A hub centrifugal load test device according to claim 1, characterized in that a rod frame (10) is fixedly connected to the housing of the test cylinder (7), and the rod frame (10) is fixedly connected to the ground.
5. A hub centrifugal load test device according to claim 1, wherein said wire rope (6) is elliptical and is sleeved on said pulley (5) and connection roller (9).
6. A hub centrifugal load test device according to claim 1, characterized in that the test cylinders (7) are arranged horizontally, and the telescopic direction of the free ends of the corresponding two test cylinders (7) is collinear with the center of the hub (3).
7. A hub centrifugal load test device according to any one of claims 1 to 6, characterized in that the test cylinder (7) is a servo hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121229558.9U CN214748830U (en) | 2021-05-31 | 2021-05-31 | Hub centrifugal load test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121229558.9U CN214748830U (en) | 2021-05-31 | 2021-05-31 | Hub centrifugal load test device |
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| Publication Number | Publication Date |
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| CN214748830U true CN214748830U (en) | 2021-11-16 |
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| CN202121229558.9U Active CN214748830U (en) | 2021-05-31 | 2021-05-31 | Hub centrifugal load test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420478A (en) * | 2021-05-31 | 2022-12-02 | 惠阳航空螺旋桨有限责任公司 | Hub centrifugal load test device |
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2021
- 2021-05-31 CN CN202121229558.9U patent/CN214748830U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115420478A (en) * | 2021-05-31 | 2022-12-02 | 惠阳航空螺旋桨有限责任公司 | Hub centrifugal load test device |
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