阅读说明：本技术 电动螺旋桨测试平台 (Electric propeller test platform ) 是由 张杰超 杨先将 朱成钢 张世隆 张凯 邢文彦 魏文菲 岳文德 王谦 王传松 邓丽 于 2019-10-23 设计创作，主要内容包括：本发明涉及螺旋桨测试领域,提供一种电动螺旋桨测试平台,其中,所述电动螺旋桨测试平台包括支撑台和测试组件,所述测试组件包括轴状的电机安装座、扭矩传动部、推拉力传动部、扭矩传感器、推拉力传感器,电机安装座能够相对于所述推拉力传动部围绕中心轴线自由地转动,电机安装座能够向所述推拉力传动部传递推力和拉力,所述电机安装座和所述扭矩传动部能够沿轴向方向自由地相对移动,所述电机安装座能够向所述扭矩传动部传递扭矩。本发明所述的电动螺旋桨测试平台,通过扭矩传动部和推拉力传动部与电机安装座的配合,可以将电机安装座传递的螺旋桨的作用力分解为独立的扭矩和推拉力作用,避免两种作用力彼此影响,从而提高了测量的准确性。(The invention relates to the field of propeller testing, and provides an electric propeller testing platform which comprises a supporting table and a testing assembly, wherein the testing assembly comprises a shaft-shaped motor mounting seat, a torque transmission part, a push-pull force transmission part, a torque sensor and a push-pull force sensor, the motor mounting seat can freely rotate around a central axis relative to the push-pull force transmission part, the motor mounting seat can transmit thrust and tension to the push-pull force transmission part, the motor mounting seat and the torque transmission part can freely move relatively along the axial direction, and the motor mounting seat can transmit torque to the torque transmission part. According to the electric propeller testing platform, the torque transmission part and the push-pull force transmission part are matched with the motor mounting seat, so that the acting force of the propeller transmitted by the motor mounting seat can be decomposed into independent torque and push-pull force, the two acting forces are prevented from influencing each other, and the measuring accuracy is improved.)

1. The electric propeller test platform is characterized by comprising a support platform (601) and a test assembly arranged on the support platform (601), wherein the test assembly comprises a shaft-shaped motor installation seat (401), a torque transmission part, a push-pull force transmission part, a torque sensor (408) coupled with the torque transmission part, and a push-pull force sensor (503) coupled with the push-pull force transmission part, the motor installation seat (401) can freely rotate around a central axis relative to the push-pull force transmission part, the motor installation seat (401) can transmit pushing force and pulling force to the push-pull force transmission part, the motor installation seat (401) and the torque transmission part can freely and relatively move along the axial direction, and the motor installation seat (401) can transmit torque to the torque transmission part.

2. The electric propeller test platform of claim 1, wherein the push-pull force transmission portion comprises a bearing seat (402) sleeved on the motor mounting seat (401), an annular protruding portion is arranged on an inner circumferential surface of the bearing seat (402), and the motor mounting seat (401) can apply acting force to the annular protruding portion along an axial direction.

3. The motorized propeller test platform of claim 2, wherein a first end of the motor mount (401) is removably connectable to a motor, and the torque transmission portion includes a first flange (406) connected to a second end of the motor mount (401), a second flange (407) connected to the torque sensor (408), and a pin (405) axially movably passing through the first flange (406) and the second flange (407).

4. The motorized propeller test platform of claim 3, wherein the push-pull force transmission portion comprises a first bearing (404) connected between the annular boss and the first flange (406) and a second bearing (403) connected between the annular boss and the motor mount (401).

5. The motorized propeller test platform of claim 4, wherein the test assembly includes a support arm (501), the bearing block (402) and the torque sensor (408) being coupled to the support arm (501).

6. The motorized propeller test platform of claim 5, wherein the test assembly includes a mount (502), the support arm (501) is pivotally mounted to the mount (502), and the push-pull force sensor (503) is coupled between the support arm (501) and the mount (502).

7. The motorized propeller test platform of claim 6, wherein the bearing block (402) and the torque sensor (408) are located at an upper end of the support arm (501), the push-pull force sensor (503) is connected to a lower end of the support arm (501), and a middle portion of the support arm (501) is hinged to the mount (502).

8. The motorized propeller test platform of claim 7, wherein two sets of the test assemblies are disposed on the support platform (601) and the two motor mounts (401) are opposite to each other.

9. The test platform of claim 8, wherein said support platform (601) is provided with a main slide rail (602), and said support (502) is slidably arranged on said main slide rail (602).

10. The motorized propeller test platform of claim 9, wherein the support platform (601) is provided with a limit slide rail (603) parallel to the main slide rail (602), and the support (502) is provided with a slide block (504) capable of sliding on the limit slide rail (603), and the slide block (504) is capable of being locked to the limit slide rail (603).

Technical Field

The invention relates to the technical field of propeller testing, in particular to an electric propeller testing platform.

Background

An electrically driven propeller propulsion system (electric propulsion system for short) is a system which takes electric power as energy and drives a motor to rotate through a motor driver so as to drive a propeller to generate thrust/tension.

Electrically driven propeller propulsion systems can be divided into single-propeller and twin-propeller propulsion systems, depending on the arrangement. The single-propeller electric propulsion system is composed of a motor driver for driving a motor, and the motor drives a propeller connected with the motor to rotate so as to generate thrust/pull. The double-paddle electric propulsion system is a system with two sets of single-paddle electric propulsion systems in a paddle coaxial layout, and comprises two sets of independent single-paddle electric propulsion systems.

In order to achieve a more efficient and safer operation of an electrically driven propeller propulsion system, it is necessary to test the operational parameters of the propeller to achieve a more targeted improvement. In which the propeller inevitably generates torque and thrust-pull forces when rotating, which need to be accurately measured as an improvement reference, however, these two forces interact with each other, resulting in unsatisfactory accuracy of the measurement results.

Disclosure of Invention

In view of the above, the present invention is directed to a testing platform for an electric propeller, so as to solve the problem of inaccurate measurement of the torque and the push-pull force generated by the propeller.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the utility model provides an electric propeller test platform, wherein, electric propeller test platform includes the brace table and sets up test assembly on the brace table, test assembly includes motor mount pad, moment of torsion transmission portion, push-pull force transmission portion of axle form, couple in torque sensor of moment of torsion transmission portion, couple in push-pull force sensor of push-pull force transmission portion, the motor mount pad can for push-pull force transmission portion freely rotates around the central axis, the motor mount pad can to push-pull force transmission portion transmission thrust and pulling force, the motor mount pad with moment of torsion transmission portion can be along axial direction relative movement freely, the motor mount pad can to moment of torsion transmission portion transmission moment of torsion.

Furthermore, the push-pull force transmission part comprises a bearing seat sleeved on the motor installation seat, an annular bulge part is arranged on the inner circumferential surface of the bearing seat, and the motor installation seat can apply acting force to the annular bulge part along the axial direction.

Furthermore, the first end of motor mount pad can detachably connect in the motor, torque transmission portion is including connecting the first flange of the second end of motor mount pad, connect in torque sensor's second flange and the axially movable round pin axle that passes first flange with the second flange.

Further, the push-pull force transmission part comprises a first bearing connected between the annular boss and the first flange and a second bearing connected between the annular boss and the motor mounting seat.

Further, the test assembly includes a support arm, and the bearing mount and the torque sensor are coupled to the support arm.

Further, the test assembly comprises a support, the support arm is pivotally mounted on the support, and the push-pull force sensor is connected between the support arm and the support.

Furthermore, the bearing seat and the torque sensor are positioned at the upper end of the supporting arm, the push-pull force sensor is connected to the lower end of the supporting arm, and the middle part of the supporting arm is hinged to the support.

Further, two groups of the test assemblies are arranged on the supporting platform, and the two motor mounting seats are opposite to each other.

Furthermore, a main slide rail is arranged on the support platform, and the support can be slidably arranged on the main slide rail.

Furthermore, a limiting slide rail parallel to the main slide rail is arranged on the support table, and the support is provided with a slide block capable of sliding on the limiting slide rail and locking the slide block on the limiting slide rail.

Compared with the prior art, the electric propeller test platform has the following advantages:

according to the electric propeller testing platform, the torque transmission part and the push-pull force transmission part are matched with the motor mounting seat, so that the acting force of the propeller transmitted by the motor mounting seat can be decomposed into independent torque and push-pull force action, the two acting forces are prevented from influencing each other, and the measuring accuracy is improved; in addition, the sliding rail can adjust the distance between the coaxial double propellers so as to realize the optimal distance of the coaxial double propeller pitch.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of an electric propeller test platform according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a support arm and support according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a motor mount and bearing block portion according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a portion of a motor mount and bearing housing according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a limiting slide rail and a support part according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a motor mounting seat and a bearing seat portion according to an embodiment of the present invention.

Description of reference numerals:

100-propeller, 200-motor, 401-motor mounting seat, 402-bearing seat, 403-second bearing, 404-first bearing, 405-pin shaft, 406-first flange, 407-second flange, 408-torque sensor, 501-supporting arm, 502-support, 503-push-pull force sensor, 504-limit slider, 505-bolt, 601-support table, 602-main slide rail, 603-limit slide rail and 700-driver.

Detailed Description

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

In the present invention, the axial direction refers to the axial direction of the motor mount 401, that is, the propeller 100.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The invention provides an electric propeller testing platform which comprises a supporting table 601 and a testing assembly arranged on the supporting table 601, wherein the testing assembly comprises a shaft-shaped motor mounting seat 401, a torque transmission part, a push-pull force transmission part, a torque sensor 408 coupled with the torque transmission part and a push-pull force sensor 503 coupled with the push-pull force transmission part, the motor mounting seat 401 can freely rotate around a central axis relative to the push-pull force transmission part, the motor mounting seat 401 can transmit pushing force and pulling force to the push-pull force transmission part, the motor mounting seat 401 and the torque transmission part can freely move relatively in the axial direction, and the motor mounting seat 401 can transmit torque to the torque transmission part.

The electric propeller test platform of the present invention is intended to test various parameters when the propeller rotates, the motor mount 401 may be connected to the motor 200 with the propeller 100, and the propeller 100 rotates to generate a torque and a thrust (or a pulling force), i.e., a force around the axial direction and a force along the axial direction, and the torque and the thrust (or the pulling force) are transmitted to the motor mount 401 through the motor 200. Through the cooperation of the motor mounting seat 401, the torque transmission part and the push-pull force transmission part, the torque and the push-pull force can be transmitted and tested independently from each other, and particularly, the motor mounting seat 401 can freely rotate around a central axis relative to the push-pull force transmission part, so that the motor mounting seat 401 cannot transmit the torque to the push-pull force transmission part, but only transmits the push force or the pull force to the push-pull force transmission part, and the push-pull force sensor 503 coupled with the push-pull force transmission part can more accurately measure the push force or the pull force from the motor mounting seat 401; the motor mount 401 and the torque transmission part can relatively freely move along the axial direction, so that the motor mount 401 cannot transmit an axial pushing or pulling force to the torque transmission part but can transmit only a torque, and thus the torque from the motor mount 401 can be measured by the torque sensor 408 coupled to the torque transmission part.

In the measurement of the torque and the push-pull force of the propeller, the forces of two different forms are separated from each other, and the torque and the push-pull force are independently measured by corresponding sensors, so that a more accurate measurement result can be obtained.

Specifically, the push-pull force transmission portion includes a bearing seat 402 sleeved on the motor mounting seat 401, an annular protrusion portion is arranged on an inner circumferential surface of the bearing seat 402, and the motor mounting seat 401 can apply an acting force to the annular protrusion portion along an axial direction. Referring to fig. 3 and 4, the bearing housing 402 is of generally tubular configuration, with the motor mount 401 inserted therein, and when thrust is generated by the propeller, the second bearing 403 is mounted between the motor mount 401 and the bearing housing 402, with the motor mount 401 transmitting thrust through the second bearing 403 to the bearing housing 402 for transmission to the push-pull force sensor 503. Meanwhile, if the propeller 100 generates pulling force, the first bearing 404 is installed between the first flange 406 and the bearing seat 402, the motor installation seat 401 transmits the pulling force to the first flange 406 through bolts, the whole body moves in the direction of the motor installation seat 401 in the axial direction, the pulling force is transmitted to the bearing seat 402 through the first bearing 404, the mounting modes and positions of the pulling and pushing force sensor 503, the first flange 406, the motor installation seat 401 and the like can be changed, and the pulling and pushing force can be transmitted through relative rotation, so long as the relative rotation can be realized, and the changes belong to the protection range of the scheme.

Wherein a first end of the motor mounting base 401 can be detachably connected to a motor, and the torque transmission part comprises a first flange 406 connected to a second end of the motor mounting base 401, a second flange 407 connected to the torque sensor 408, and a pin 405 axially movably passing through the first flange 406 and the second flange 407. Referring to fig. 6, the first flange 406 and the second flange 407 can rotate synchronously by the action of the pin 405, and since the pin 405 can move freely axially, the second flange 407 is not subjected to the action of a pushing force when the first flange 406 moves axially, so that only a torque is transmitted between the two flanges to measure a corresponding torque by the torque sensor 408.

Further, the push-pull force transmission portion includes a first bearing 404 connected between the annular protrusion and the first flange 406, and a second bearing 403 connected between the annular protrusion and the motor mount 401. Referring to fig. 4, the bearing housing 402 and the motor mount 401 can freely rotate relative to each other through the first bearing 404 and the second bearing 403 without transmitting a torque action. It will be appreciated that the bearing comprises two parts that are capable of relative rotation, which are connected to the first flange 406 and the bearing housing 402, or to the motor mount 401 and the bearing housing 402, respectively, and that the bearing may take a variety of forms and may be of a compound bearing construction.

In addition, the test assembly includes a support arm 501, and the bearing housing 402 and the torque sensor 408 are coupled to the support arm 501. The torque sensor 408 is connected to the support arm 501, that is, two ends of the torque sensor 408 are respectively connected to the support arm 501 and the second flange 407, so that the torque transmitted by the second flange 407 can be measured; the bearing block 402, in turn, transmits the push-pull force to the support arm 501 and further directly or indirectly to a push-pull force sensor 503, as will be described in more detail below.

In addition, the test assembly includes a support base 502, the support arm 501 is pivotally mounted to the support base 502, and the push-pull force sensor 503 is coupled between the support arm 501 and the support base 502. The support arm 501 is pivotally connected to the support 502 so that it can rotate relative to the support 502 under the action of the push-pull force from the bearing block 402 (i.e., from the propeller 100), and the push-pull force sensor 503 between the support arm 501 and the support 502 can measure the magnitude of the push-pull force according to the rotation of the support arm 501.

The bearing seat 402 and the torque sensor 408 are located at the upper end of the support arm 501, the push-pull force sensor 503 is connected to the lower end of the support arm 501, and the middle portion of the support arm 501 is hinged to the support 502. Referring to fig. 1 and 2, the supporting arm 501 extends substantially in a vertical direction, and the upper end of the supporting arm 501 is provided with the torque sensor 408 and the bearing seat 402, of course, the motor mount 401 is also located at the upper end of the supporting arm 501, the supporting arm 501 can be driven to pivot relative to the support 502 by the push-pull force transmitted by the motor mount 401, and the lower end of the supporting arm 501 swings, so that the force can act on the push-pull force sensor 503 to measure the force. The support arm 501 is configured as a lever, which can convert the push-pull force into rotation of the support arm 501, thereby increasing the amount of change in the position of the support arm 501 caused by the push-pull force, and allowing the push-pull force sensor 503 to more accurately measure the corresponding push-pull force.

In addition, two sets of the test assemblies are disposed on the supporting platform 601, and the two motor mounts 401 are opposite to each other. Referring to fig. 1, two sets of motors 200 and propellers 100 mounted on two motor mounts 401 are opposed to each other and the air currents generated by the two propellers 100 interact with each other, such interaction being measurable by the test assembly described above. The support platform 601 is further provided with a driver 700, and a power supply is connected to the motor 200 and the driver 700 to supply power.

In addition, a main slide rail 602 is disposed on the support platform 601, and the support 502 is slidably disposed on the main slide rail 602. The distance between the two supports 502 can be adjusted, i.e. the distance between the mounted propellers 100 can be adjusted, to meet the test requirements, and further verify the influence of the distance between the paddles on the efficiency of the paddles.

Further, a limit slide rail 603 parallel to the main slide rail 602 is disposed on the support 601, and the support 502 is provided with a slider 504 capable of sliding on the limit slide rail 603, and the slider 504 can be locked to the limit slide rail 603. Referring to fig. 5, a bolt 505 is screwed on the sliding block 504, the head of the bolt 505 and the sliding block 504 can be respectively located at two sides of a part of the limit slide 603, and the head of the bolt 505 and the sliding block 504 clamp the part of the limit slide 603 by screwing the bolt, so that the sliding block 504 is fastened to the limit slide 603, that is, the support 502 is fixed on the limit slide 603.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.