Rotor wing power system test bed elevation angle adjusting device

Abstract

The utility model discloses an elevation angle adjusting device for a rotor wing power system test bed, and solves the technical problems that a lead screw of an existing test bed is easy to bend and deform and is weak in bearing capacity. The elevation angle adjusting device comprises an elevation angle adjusting assembly. An auxiliary support assembly; the elevation angle adjusting assembly and the auxiliary supporting assembly are both arranged on the base. The elevation angle adjusting assembly comprises a lead screw, a sliding block and a connecting rod, the lead screw is in threaded fit with the sliding block, the upper end of the sliding block is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to the lower portion of the inclined platform, one end of the lead screw is connected with an output shaft of a driving motor, and the inclined platform is hinged to the base; the auxiliary supporting assembly is arranged below the sliding block, and the sliding block is connected with the auxiliary supporting assembly in a sliding mode. The utility model has the advantages of strong bearing capacity and the like.

Description

Technical Field

[0001] This utility model relates to the field of rotor performance testing technology, specifically to a rotor power system test bench elevation angle adjustment device. Background Technology

[0002] A test bench is a fundamental infrastructure in a laboratory used to support and conduct experimental operations. It combines a test bench, instruments, and various auxiliary tools to meet the experimental needs of different fields, such as chemistry, physics, biology, medicine, and materials science. In industrial production, test benches are used to test and verify products and conduct quality inspections to ensure that the quality and performance of products meet standards. In the testing of rotor power systems, test benches are also essential equipment. They can simulate various parameters under actual flight conditions, such as rotational speed and lift, to evaluate the aerodynamic characteristics, dynamic characteristics, and flight mechanical performance of the rotor system. By comparing with the theoretical design, the differences between the actual performance of the rotor system and the theoretical design can be found, and the rotor system can be optimized to improve its performance. In particular, in order to test the performance of the rotor system under different attitudes, the angle of the rotor system needs to be adjusted.

[0003] Although existing technologies have applied rotor system attitude adjustment to rotor performance test benches, such as the patent with publication number CN 105083588 A entitled "A Multi-rotor Unmanned Aerial Vehicle Performance Test Platform and Method," which discloses that the upper and lower ends of the column are connected to the top frame and base through universal bearings, allowing the column to swing flexibly in space, and the angle of the rotor system can be adjusted by adjusting the universal bearings to measure the performance of the rotor system in different attitudes, this method only adjusts the angle of the rotor system by adjusting the column. After adjusting to the corresponding position, the slider is only fixed by bolts to restrict its sliding in the slide rail, while the universal bearing can still be adjusted, which is not conducive to the stable operation of the test platform.

[0004] In other existing angle-adjustable devices, a screw-slider structure is installed on the base plate. The screw rotates, causing the slider to move along it. A connecting rod is hinged to the slider and to the bottom end of a support plate hinged to the base plate. Therefore, as the slider moves along the screw, the connecting rod pushes the support plate upwards. Since one end of the support plate is hinged to the base plate, the angle of the support plate can be adjusted. When this structure is applied to a rotor system performance test bench, the pitch angle of the rotor test bench can be adjusted, thereby changing the rotor system's attitude. However, In the existing device, the sliding of the slider is not supported by any structure. As a result, the weight of the connecting rod and the upper device (including the rotor system) hinged to the connecting rod is partially borne by the hinge between the support plate and the base plate, and the rest of the gravity is applied to the slider through the connecting rod. In the performance test of the rotor system, due to the large weight of the rotor power system, a large pressure will be applied to the slider, and the weight borne by the slider will be entirely borne by the lead screw. Therefore, the connecting rod and the lead screw are very prone to bending deformation, which affects the movement of the slider and leads to damage to the angle adjustment device.

[0005] Based on the problems existing in the above-mentioned patents, it is necessary to study a test bench elevation angle adjustment device with stable elevation angle adjustment and stronger load-bearing capacity. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the existing test bench lead screw is prone to bending deformation and has weak load-bearing capacity.

[0007] This utility model is achieved through the following technical solution:

[0008] A rotor propulsion system test bench elevation angle adjustment device, comprising:

[0009] Tilting angle adjustment component;

[0010] Auxiliary support components;

[0011] Both the elevation angle adjustment component and the auxiliary support component are mounted on the base of the test bench;

[0012] The elevation adjustment assembly includes a lead screw, a slider, and a connecting rod. The lead screw is threadedly engaged with the slider. The upper end of the slider is movably connected to one end of the connecting rod. The other end of the connecting rod is hinged below the tilting platform. One end of the lead screw is connected to the output shaft of the drive motor. The tilting platform is movably connected to the base.

[0013] The auxiliary support component is disposed below the slider, and the slider is slidably connected to the auxiliary support component.

[0014] This invention achieves adjustment of the pitch angle of the test bench by setting up an elevation angle adjustment component, and provides support for the elevation angle adjustment component by setting up an auxiliary support component. The movable connection described in this invention adopts a pin hinge method, specifically implemented as follows:

[0015] The test platform's elevation angle is adjusted by setting up a lead screw and a slider that cooperates with the lead screw to form a lead screw-slider structure. The lead screw is driven to rotate by a drive motor. Since the slider is slidably mounted on an auxiliary support component, its rotation is restricted. Therefore, the rotation of the lead screw is converted into the movement of the slider. During the movement of the slider, the connecting rod will tilt. The further the slider slides outward, the closer the connecting rod is to horizontal. The tilt of the connecting rod will then drive the tilting platform to tilt synchronously. With the base hinged to the tilting platform, the elevation angle of the tilting platform can be adjusted to meet the different posture changes during rotor system experiments.

[0016] Support for the slider and lead screw: To support the slider and lead screw and prevent deformation of the lead screw due to the weight of the upper part of the slider, an auxiliary support component is installed on the base. It should be noted that the auxiliary support component is located directly below the lead screw and along the axis of the lead screw, so that the slider can slide smoothly along the auxiliary support component while cooperating with the lead screw. Therefore, after the rotor system is installed on the tilting platform, the weight of the upper component on the slider will be directly applied to the slider through the connecting rod. The slider then transfers the upper weight to the auxiliary support component, thereby dispersing the pressure, improving the load-bearing capacity, and preventing the lead screw from deforming and affecting the movement of the slider. This achieves the technical effect of improving the stability of the elevation angle adjustment.

[0017] Furthermore, the auxiliary support assembly includes a lead screw base, which is disposed above the base along the lead screw axis, and the lower end of the slider is slidably connected to the upper end of the lead screw base.

[0018] After adopting this technical solution, it should be noted that the slider and the upper end of the lead screw base can be connected by any of the following structures: slide rail, slide groove, or ball bearing. The slider is supported by the lead screw base, and further limited by the sliding structure, so as to achieve stable support for the slider and the lead screw.

[0019] The present invention provides a preferred embodiment of a rotor power system test bench elevation angle adjustment device, wherein the upper end of the lead screw base is provided with at least one slide rail, and the lower end of the slider is provided with a sliding part corresponding to the slide rail, the sliding part slidingly engaging with and limiting the slide rail.

[0020] After adopting this technical solution, it should be noted that the slide rail has a stronger load-bearing capacity than the sliding structure of the slide groove and ball bearing. In this utility model, the slide rail adopts an I-shaped slide rail, and the sliding part matches the shape of the I-shaped slide rail to achieve stable sliding of the slider. In addition, the cooperation between the sliding part and the slide rail prevents the lead screw from driving the slider to rotate, making the transmission efficiency of the lead screw slider structure higher.

[0021] The present invention provides a preferred embodiment of a rotor power system test bench elevation angle adjustment device, wherein two slide rails are provided on the lead screw base, and two sliding parts are provided at the lower end of the slider to cooperate and slide in conjunction with the two slide rails, so as to further enhance the load-bearing capacity of the slider and further reduce the deformation of the lead screw.

[0022] The present invention provides a preferred embodiment of a rotor power system test bench elevation angle adjustment device, wherein the connecting rod has a Y-shaped design and the open end of the connecting rod is hinged to the lower end of the inclined platform.

[0023] After adopting this technical solution, it should be noted that the connecting rod includes a first connecting part, a second connecting part, and a third connecting part. The first connecting part, the second connecting part, and the third connecting part are interconnected to form a Y-shaped structure. In order to enhance the load-bearing capacity of the connecting rod and prevent the connecting rod from deforming due to the combined force of the heavy weight of the tilting platform and the upper components, as well as the downwash airflow generated by the rotor during rotor system performance testing, the connecting rod is set into a Y-shaped structure. The second connecting part and the third connecting part are hinged to the tilting platform to form a double-point support, so that the weight of the upper components is distributed on two support points, reducing the pressure on a single support point and making the pressure distribution more uniform. In addition, the double-point support also enhances the stability of the tilting platform and ensures the accuracy during rotor system performance testing.

[0024] Furthermore, the slider is provided with a connecting groove, and one end of the connecting rod is disposed in the connecting groove and hinged to the connecting groove, which facilitates the installation of the connecting rod.

[0025] After adopting this technical solution, it should be noted that the connecting rod and the connecting groove are hinged by a pin. When the slider moves, it will drive the connecting rod to adjust the elevation angle.

[0026] Furthermore, at least one lower side plate is provided at one end of the upper surface of the base, and an upper side plate is provided below one end of the inclined platform, the upper side plate and the lower side plate being hinged to each other.

[0027] After adopting this technical solution, it should be noted that the upper and lower side plates are located at the end closest to the drive motor, and the hinge structure between the upper and lower side plates is consistent with the hinge structure between the slider and the connecting rod. A connecting groove is also provided on the lower side plate, and the upper side plate is set in the connecting groove and hinged to the connecting groove to enhance the load-bearing capacity and stability. In addition, it should be noted that the hinge between the base and the tilting platform will cooperate with the tilt angle adjustment component to adjust the tilt angle of the tilting platform. Finally, it should be noted that the hinge between the base and the tilting platform and the hinge between the tilting platform and the connecting rod will not cause the tilting platform to be unstable. This is because even after the drive motor stops, a self-locking mechanism will be formed between the lead screw and the slider, restricting the sliding of the slider. The hinge point of the connecting rod will not rotate in this state, so the tilt angle of the connecting rod will also be fixed, thereby maintaining the stability of the tilting platform.

[0028] The present invention provides a preferred embodiment of a rotor power system test bench elevation angle adjustment device, wherein two lower side plates are provided, which are respectively located on both sides of one end of the base, and two upper side plates are also provided accordingly. The load-bearing capacity of the tilting platform is further enhanced by the mutual hinge of the two upper side plates and the two lower side plates.

[0029] Furthermore, a limiting block is connected to the outside of the lead screw base, and a limiting plate is provided at one end of the tilting platform corresponding to the limiting block. When the tilting platform is horizontal, the limiting block supports and limits the limiting plate.

[0030] After adopting this technical solution, it should be noted that in order to prevent the tilting platform from rotating at a negative angle, i.e., tilting, which could cause the tilting base to collide with the lead screw, motor, and other transmission components and cause damage, a limiting block is set on the outside of the lead screw base to form an L-shape. This, together with the limiting plate set on the tilting platform, ensures that when the tilting platform is in a horizontal state, the limiting plate is exactly located on and in contact with the limiting block. At this time, the limiting block will support the limiting plate (this state can be regarded as the initial state of the device, at which time the maximum elevation angle of the connecting rod is close to horizontal, and the elevation angle of the tilting platform is 0). In this state, the upper and lower side plates, the connecting rod, and the limiting block will jointly distribute the weight of the upper part of the tilting platform, achieving stable support.

[0031] Furthermore, the elevation adjustment assembly also includes a lead screw support and a coupling. The lead screw support is provided at both ends of the upper surface of the lead screw base. The lead screw passes through the lead screw support, and the output shaft of the drive motor is connected to the lead screw through the coupling.

[0032] After adopting this technical solution, it should be noted that the lead screw support supports the lead screw. Two lead screw supports are set to prevent the lead screw from bending due to lack of support, keeping the lead screw in a straight state and facilitating the sliding of the slider. In addition, the lead screw support also participates in the distribution of pressure. After the connecting rod transmits the upper gravity to the slider, part of the gravity acts on the slide rail and the lead screw base, and the other part of the pressure acts on the lead screw. The pressure on the lead screw is then transmitted to the lead screw support, further reducing the stress on the lead screw, maintaining the efficient operation of the lead screw, and increasing the life of the lead screw.

[0033] Furthermore, the drive motor is mounted on the base and positioned at one end near the lower side plate.

[0034] Furthermore, the inclined platform has a hollowed-out section.

[0035] After adopting this technical solution, it should be noted that, on the one hand, the hollowing out reduces the weight of the tilting platform, and on the other hand, when conducting performance tests of the rotor system, it reduces the collision area of ​​the downwash airflow generated by the tilting platform and the rotor, thereby reducing the additional pressure brought by the downwash airflow.

[0036] The working principle of this utility model:

[0037] Initial state: The default initial state is when the tilting platform is in a horizontal state. At this time, the limit plate is just on the limit block and just in contact. The upper and lower side plates, connecting rods, and limit blocks will jointly distribute the weight of the upper part of the tilting platform, so as to achieve stable support for the tilting platform and its upper components. At this time, the tilting platform has an elevation angle of 0 and the connecting rod has an elevation angle of maximum.

[0038] Tilt Angle Adjustment: The drive motor rotates the lead screw. Since the slider is mounted on the auxiliary support assembly, its rotation is restricted. Therefore, the rotation of the lead screw is converted into movement of the slider. Initially, the slider moves towards the drive motor. During this movement, the slider causes the connecting rod to tilt. As the slider moves towards the drive motor, the tilt angle of the connecting rod decreases, approaching vertical and then horizontal. This tilting of the connecting rod then causes the tilting platform to tilt synchronously. Combined with the hinged connection between the base and the tilting platform, this achieves tilt angle adjustment of the tilting platform. From the initial state to the point where the slider drives the connecting rod to a vertical state, the tilting platform's elevation angle will increase from a small value, reaching its maximum tilt angle when the connecting rod is perpendicular to the base. If the slider continues to slide at this point, the connecting rod's elevation angle will continuously decrease, and the tilting platform's elevation angle will also decrease. In short, starting from the initial position, as the slider slides towards the drive motor, the connecting rod's elevation angle continuously decreases from its maximum, while the tilting platform's elevation angle increases from 0, reaching its maximum when the connecting rod is vertical, and then continuing to decrease. This satisfies the need for different attitude changes during rotor system experiments.

[0039] Slider and lead screw support: In the initial state, the upper and lower side plates, connecting rods and lead screw base, and limit blocks will jointly distribute the weight of the upper part of the tilting platform, achieving stable support for the tilting platform and its upper components. During the sliding of the slider, the tilting platform's elevation angle changes. At this time, the limit blocks will no longer bear pressure. Part of the weight of the upper components on the slider will act directly on the slider through the connecting rod, while the slider will transfer part of the upper weight to the lead screw base, thereby dispersing pressure, improving load-bearing capacity, and making the lead screw less prone to deformation that would affect the slider's movement. In addition, the lead screw support will also participate in dispersing pressure, further reducing the stress on the lead screw, maintaining its efficient operation, and increasing its lifespan.

[0040] This utility model has the following advantages and beneficial effects:

[0041] 1. This utility model achieves the adjustment of the pitch angle of the test platform by setting up an elevation angle adjustment component, and achieves the support of the elevation angle adjustment component by setting up an auxiliary support component.

[0042] 2. By setting a lead screw base, part of the weight of the upper component on the slider will be directly applied to the slider through the connecting rod, and the slider will transfer part of the upper weight to the lead screw base, thereby dispersing the pressure, improving the load-bearing capacity, and making the lead screw less prone to deformation that would affect the movement of the slider.

[0043] 3. By setting the connecting rod in a Y-shape, this utility model enables the connecting rod and the tilting platform to form a double-point support, which distributes the weight of the upper component to two support points, reducing the pressure on a single support point and making the pressure distribution more uniform. In addition, the double-point support also enhances the stability of the tilting platform and ensures the accuracy during the rotor system performance testing process.

[0044] 4. This utility model hollows out the tilting platform. On the one hand, the hollowing out reduces the weight of the tilting platform. On the other hand, when the performance of the rotor system is tested, the collision area of ​​the downwash airflow generated by the tilting platform and the rotor is reduced, thus reducing the additional pressure brought by the downwash airflow. Attached Figure Description

[0045] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0046] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0047] Figure 2 This is a front view of the overall structure of this utility model;

[0048] Figure 3 This is a partial structural diagram of the elevation angle adjustment component of this utility model.

[0049] The component names in the attached diagram are as follows:

[0050] 1-Base, 101-Lower side plate; 2-Tilting platform, 201-Hinge, 202-Upper side plate, 203-Limiting plate; 3-Elevation adjustment assembly, 301-Drive motor, 302-Lead screw, 303-Slider, 304-Connecting rod, 305-Coupling, 306-Lead screw support; 4-Auxiliary support assembly, 401-Lead screw base, 402-Slide rail, 403-Limiting block. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0052] Example 1

[0053] like Figures 1-3 As shown, a rotor propulsion system test bench elevation angle adjustment device includes:

[0054] Tilt adjustment component 3;

[0055] Auxiliary support component 4;

[0056] Both the elevation angle adjustment component 3 and the auxiliary support component 4 are mounted on the base 1 of the test bench;

[0057] The elevation angle adjustment assembly 3 includes a lead screw 302, a slider 303, and a connecting rod 304. The lead screw 302 is threadedly engaged with the slider 303. The upper end of the slider 303 is hinged to one end of the connecting rod 304. The other end of the connecting rod 304 is movably connected to the underside of the inclined platform 2 of the test bench. One end of the lead screw 302 is connected to the output shaft of the drive motor 301. The inclined platform 2 is movably connected to the base 1.

[0058] The auxiliary support component 4 is disposed below the slider 303, and the slider 303 is slidably connected to the auxiliary support component 4.

[0059] The auxiliary support assembly 4 includes a lead screw base 401, which is axially disposed above the base 1 along the lead screw 302, and the lower end of the slider 303 is slidably connected to the upper end of the lead screw base 401.

[0060] The slider 303 and the upper end of the lead screw base 401 are slidably connected by any structure such as slide rail 402, slide groove, or ball bearing sliding.

[0061] The slider 303 is provided with a connecting groove, and one end of the connecting rod 304 is disposed in the connecting groove and hinged to the connecting groove.

[0062] At least one lower side plate 101 is provided at one end of the upper surface of the base 1, and an upper side plate 202 is provided below one end of the inclined platform 2. The upper side plate 202 and the lower side plate 101 are hinged to each other.

[0063] The lead screw base 401 is connected to a limiting block 403 on the outside. The inclined platform 2 is provided with a limiting plate 203 at one end corresponding to the limiting block 403. When the inclined platform 2 is horizontal, the limiting block 403 supports and limits the limiting plate 203.

[0064] The elevation adjustment assembly 3 also includes a lead screw support 306 and a coupling 305. The lead screw support 306 is provided at both ends of the upper surface of the lead screw base 401. The lead screw 302 passes through the lead screw support 306. The output shaft of the drive motor 301 is connected to the lead screw 302 through the coupling 305.

[0065] The drive motor 301 is connected to the base 1 and is located at one end near the lower side plate 101.

[0066] Example 2

[0067] The difference between this embodiment and Embodiment 1 is that, as Figure 3 As shown, the upper end of the lead screw base 401 is provided with at least one slide rail 402, and the lower end of the slider 303 is provided with a sliding part corresponding to the slide rail 402. The sliding part slides and is limited by the slide rail 402.

[0068] Compared to sliding structures such as grooves and balls, slide rail 402 has a stronger load-bearing capacity. In this embodiment, slide rail 402 adopts an I-shaped slide rail 402, and the sliding part matches the shape of the I-shaped slide rail 402 to achieve stable sliding of slider 303. In addition, the cooperation between the sliding part and slide rail 402 prevents the lead screw 302 from driving slider 303 to rotate, making the transmission efficiency of the lead screw 302 slider 303 structure higher.

[0069] The remaining structure of this embodiment is the same as that of Embodiment 1, and will not be described again here.

[0070] Example 3

[0071] The difference between this embodiment and Embodiment 2 is that, as Figure 3 As shown, the lead screw base 401 is provided with two slide rails 402, and the lower end of the slider 303 is provided with two sliding parts that are respectively connected to the two slide rails 402 to further enhance the load-bearing capacity of the slider 303 and further reduce the deformation of the lead screw 302.

[0072] Example 4

[0073] The difference between this embodiment and embodiment 3 is that, as Figure 1 As shown, the connecting rod 304 has a Y-shaped design. The open end of the connecting rod 304 is hinged to the lower end of the tilting platform 2. The Y-shaped structure makes the connecting rod 304 and the tilting platform 2 form a double-point support, which distributes the weight of the upper component to two support points, reduces the pressure on a single support point, and makes the pressure distribution more uniform. In addition, the double-point support also enhances the stability of the tilting platform 2 and ensures the accuracy during the rotor system performance testing process.

[0074] Example 5

[0075] The difference between this embodiment and embodiment 4 is that, as Figure 1 As shown, there are two lower side plates 101, which are located on both sides of one end of the base 1. There are also two upper side plates 202, which further enhance the load-bearing capacity of the inclined platform 2.

[0076] Example 6

[0077] The difference between this embodiment and embodiment 5 is that, as Figure 1 As shown, the tilting platform 2 has a hollowed-out section. The hollowed-out section reduces the weight of the tilting platform 2 and reduces the collision area between the tilting platform 2 and the downwash airflow generated by the rotor system during performance testing, thereby reducing the additional pressure brought by the downwash airflow.

[0078] The working principle of this utility model:

[0079] Initial state: The default initial state is when the tilting platform 2 is in a horizontal state. At this time, the limiting plate 203 is just on the limiting block 403 and just in contact. The upper side plate 202, the lower side plate 101, the connecting rod 304, and the limiting block 403 will jointly distribute the weight of the upper part of the tilting platform 2, so as to achieve stable support for the tilting platform 2 and its upper components. At this time, the tilt angle of the tilting platform 2 is 0, and the tilt angle of the connecting rod 304 is at its maximum.

[0080] Tilt Angle Adjustment: Driven by the drive motor 301, the lead screw 302 rotates. Since the slider 303 is slidably mounted on the auxiliary support assembly 4, its rotation is restricted. Therefore, the rotation of the lead screw 302 is converted into movement of the slider 303. Initially, the slider 303 moves towards the drive motor 301. During this movement, the slider 303 causes the connecting rod 304 to tilt. As the slider 303 moves towards the drive motor 301, the elevation angle of the connecting rod 304 decreases, approaching vertical and then horizontal. This tilting of the connecting rod 304 then causes the tilting platform 2 to tilt synchronously. Combined with the hinged connection between the base 1 and the tilting platform 2, this achieves the tilting of the platform 2. The tilt angle adjustment, from the initial state to the process of slider 303 driving connecting rod 304 to a vertical state, the tilt angle of tilt platform 2 will increase from small to large. When connecting rod 304 is perpendicular to base 1, the tilt angle of tilt platform 2 reaches its maximum. If slider 303 continues to slide at this time, the tilt angle of connecting rod 304 will continue to decrease, and the tilt angle of tilt platform 2 will also decrease. In short, starting from the initial position, as slider 303 slides towards drive motor 301, the tilt angle of connecting rod 304 continuously decreases from its maximum, and the tilt angle of tilt platform 2 increases from 0. When connecting rod 304 is vertical, the tilt angle of tilt platform 2 reaches its maximum, and then continues to decrease, thus satisfying the change of different attitudes during rotor system experiments.

[0081] Support for slider 303 and lead screw 302: In the initial state, the upper side plate 202 and lower side plate 101, connecting rod 304, lead screw base 401, and limit block 403 will jointly distribute the weight of the upper part of the tilting platform 2, achieving stable support for the tilting platform 2 and its upper components. During the sliding of slider 303, the tilt angle of the tilting platform 2 changes. At this time, the limit block 403 will no longer bear pressure. Part of the weight of the upper components on slider 303 will be directly applied to slider 303 through connecting rod 304. Slider 303 will transfer part of the upper weight to lead screw base 401, thereby dispersing pressure and improving load-bearing capacity, making it less likely for lead screw 302 to deform and affect the movement of slider 303. In addition, lead screw support 306 will also participate in dispersing pressure, further reducing the force on lead screw 302, maintaining the efficient operation of lead screw 302, and increasing the service life of lead screw 302.

[0082] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rotor propulsion system test bench elevation angle adjustment device, characterized in that, include: Elevation adjustment component (3); Auxiliary support components (4); The elevation angle adjustment component (3) and the auxiliary support component (4) are both mounted on the base (1) of the test bench; The elevation adjustment assembly (3) includes a lead screw (302), a slider (303), a connecting rod (304), and a drive motor (301). The lead screw (302) is threadedly engaged with the slider (303). The upper end of the slider (303) is movably connected to one end of the connecting rod (304). The other end of the connecting rod (304) is movably connected to the underside of the inclined platform (2) of the test bench. One end of the lead screw (302) is connected to the output shaft of the drive motor (301). The inclined platform (2) is hinged to the base (1). The auxiliary support component (4) is disposed below the slider (303), and the slider (303) is slidably connected to the auxiliary support component (4).

2. The tilt angle adjustment device for a rotor power system test bench according to claim 1, characterized in that, The auxiliary support assembly (4) includes a lead screw base (401), which is axially positioned above the base (1) along the lead screw (302), and the lower end of the slider (303) is slidably connected to the upper end of the lead screw base (401).

3. The tilt angle adjustment device for a rotor power system test bench according to claim 2, characterized in that, The upper end of the lead screw base (401) is provided with at least one slide rail (402), and the lower end of the slider (303) is provided with a sliding part corresponding to the slide rail (402). The sliding part slides and is limited in place with the slide rail (402).

4. The tilt angle adjustment device for a rotor power system test bench according to any one of claims 1-3, characterized in that, The connecting rod (304) has a Y-shaped design, and the open end of the connecting rod (304) is hinged to the lower end of the inclined platform (2).

5. The tilt angle adjustment device for a rotor power system test bench according to claim 4, characterized in that, The slider (303) is provided with a connecting groove, and one end of the connecting rod (304) is disposed in the connecting groove and hinged to the connecting groove.

6. The tilt angle adjustment device for a rotor power system test bench according to any one of claims 1-3, characterized in that, At least one lower side plate (101) is provided at one end of the upper surface of the base (1), and an upper side plate (202) is provided below one end of the inclined platform (2). The upper side plate (202) and the lower side plate (101) are hinged to each other.

7. The tilt angle adjustment device for a rotor power system test bench according to claim 6, characterized in that, There are two lower side plates (101), which are located on both sides of one end of the base (1), and there are also two upper side plates (202).

8. The tilt angle adjustment device for a rotor power system test bench according to claim 2 or 3, characterized in that, The upper end of the lead screw base (401) is connected to a limiting block (403), and the tilting platform (2) is provided with a limiting plate (203) at one end corresponding to the limiting block (403). When the tilting platform (2) is horizontal, the limiting block (403) supports and limits the limiting plate (203).

9. The tilt angle adjustment device for a rotor power system test bench according to claim 2, characterized in that, The elevation adjustment assembly (3) further includes a lead screw support (306) and a coupling (305). The lead screw base (401) has a lead screw support (306) at each end of its upper surface. The lead screw (302) passes through the lead screw support (306). The output shaft of the drive motor (301) is connected to the lead screw (302) through the coupling (305).

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