Piston aeroengine test bed

Abstract

This utility model discloses a piston-type aero-engine test bench, including a device frame, a support foot at the bottom of the device frame, casters movably connected to the bottom of the support foot, a protective plate movably connected to the outer top of the device frame, a support plate at the top of the device frame, and two sets of positioning components symmetrically connected to the top of the support plate. A support component is movably connected to the top of the support plate. Movable crossbars are fixedly connected to the bottom of both the support component and the positioning component. This utility model includes auxiliary support feet movably connected to the bottom of the protective plate. One end of each of the two protective plates has a protrusion, and the other end has grooves on both sides. The two protective plates are engaged with the protrusions and grooves of the first end. When the protective plates rotate downwards, they are locked together. The auxiliary support feet at the bottom protrude downwards through threaded rotation, thus providing auxiliary support for the stability of the device.

Description

Technical Field

[0001] This utility model relates to the field of engine testing technology, and in particular to a piston-type aero-engine test bench. Background Technology

[0002] From design finalization to mature product development, bench testing is an essential step in engine development and testing. For conventional engines, start-up tests, ignition tests, and performance tests are required. Before being put into operation, aero-engines undergo dynamic and thermal tests under various operating conditions on an engine bench. Fixed-wing UAVs typically use small piston engines as their power unit, providing thrust and pull for flight. Engine performance directly affects the performance, reliability, and economy of the UAV. Therefore, it is necessary to obtain parameters such as engine speed control stability, thrust, torque, and fuel consumption during the testing phase.

[0003] A search revealed Chinese patent publication number CN202420123226.X, which includes: a support base; a housing fixed to the upper surface of the support base; an engine mounting plate that slides back and forth relative to the housing along the axial direction via a motion guiding mechanism, the engine mounting plate including a first mounting plate and a second mounting plate symmetrically arranged on both sides of the housing, each with mounting holes for mounting and fixing the engine; and a fixing structure that fixes the position of the engine mounting plate and the housing after sliding adjustment. This utility model can install two engines simultaneously, reducing disassembly work. However, adjusting the engine position after installation and fixing is cumbersome in this application. Utility Model Content

[0004] The purpose of this invention is to provide a piston-type aero-engine test bench to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a piston-type aero-engine test bench, comprising:

[0006] The device frame has a supporting foot at the bottom, and a caster wheel is movably connected to the bottom end of the supporting foot. A protective plate is movably connected to the outer top of the device frame. A support plate is provided at the top of the device frame. Positioning components are symmetrically and movably connected to the top of the support plate. There are two sets of positioning components, which are symmetrically arranged. Support components are movably connected to the top of the support plate.

[0007] Both the support component and the positioning component are fixedly connected to a movable crossbar at their bottoms. The device frame has a driving structure inside. A movable pull rod is rotatably connected to one side of the support foot. An auxiliary support foot is movably connected to the bottom of the protective plate. Two sets of auxiliary support feet are provided and are arranged symmetrically.

[0008] Preferably, the support component and the positioning component are provided with a lifting rod at their bottom ends, and the support component and the positioning component are movably connected to the movable crossbar through the lifting rod.

[0009] Preferably, the top surface of the support plate is symmetrically provided with sliding grooves, and the inner side of the connection between the support assembly and the positioning assembly and the lifting rod is provided with sliding grooves. The size of one side of the sliding groove is adapted to the size of the sliding groove, and the lifting rod is slidably connected to the support plate through the sliding groove.

[0010] Preferably, guide rail sliders are symmetrically fixedly connected to both sides of the bottom of the movable crossbar, and a threaded slider is fixedly connected to the middle of the bottom of the movable crossbar.

[0011] Preferably, a drive screw is rotatably connected inside the drive structure, and a rotating shaft seat is fixedly provided at both ends inside the drive structure. The drive screw is rotatably connected to the drive structure through the rotating shaft seat. Guide slide rails are fixedly connected to both sides of the top of the drive structure, and a motor for driving is fixedly connected to one end of the drive screw.

[0012] Preferably, the threaded slider has a threaded groove adapted to the drive screw, the drive screw is connected to the threaded slider through the threaded groove, the size of the guide rail slider is adapted to the size of the guide rail, and the movable crossbar is slidably connected to the guide rail through the guide rail slider.

[0013] Preferably, the positioning component has symmetrically arranged abutment rods on its top, one end of which is rotatably connected to an abutment plate via a fastening pivot, and the support component has a fixedly installed support arc plate on its top.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features a lifting rod at the bottom of a support assembly and a positioning assembly. The support assembly and the positioning assembly are movably connected to a movable crossbar via the lifting rod. The lifting rod allows adjustment of the height of the support assembly and the positioning assembly to meet different usage requirements. A threaded slider has a threaded groove adapted to a drive screw. When the motor rotates, the drive screw drives the threaded slider through the threaded groove. The movable crossbar is limited on the guide rail by the guide rail slider's dimensions, allowing the movable crossbar to slide on the guide rail when the motor drives the threaded slider. This allows for simultaneous adjustment of the positions of the support assembly and the positioning assembly, thereby changing the position of the engine supported on them.

[0016] This utility model features two sets of auxiliary support feet movably connected to the bottom of the protective plate. The protective plates are symmetrically arranged with protrusions at one end and grooves on both sides. The protective plates are engaged with the protrusions and grooves of the protective plate at one end. When the device moves, the protective plate rotates upward to prevent the engine from being hit. When the device is placed, the protective plate rotates downward, and the bottom auxiliary support feet protrude downward through screws, thereby providing auxiliary support for the stability of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the unfolded structure of the overall protective plate of this utility model;

[0020] Figure 3 This is a schematic diagram of the movable crossbar structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the driving structure of this utility model.

[0022] As indicated by the labels in the diagram: 1. Device frame; 2. Support base; 3. Casters; 4. Protective plate; 401. Auxiliary support foot; 5. Support plate; 501. Sliding groove; 6. Positioning assembly; 601. Support rod; 602. Support plate; 7. Support assembly; 701. Support arc plate; 8. Movable crossbar; 801. Guide rail slider; 802. Threaded slider; 9. Drive structure; 901. Rotary shaft seat; 902. Drive screw; 903. Guide rail; 10. Sliding groove; 11. Movable tie rod; 12. Lifting rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0024] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] It should be understood that although the terms "first," "second," "third," etc., may be used to describe various components in this invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of this invention, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0030] refer to Figures 1 to 4 A piston-type aero-engine test bench includes: a device frame 1, a support foot 2 at the bottom of the device frame 1, a caster wheel 3 movably connected to the bottom end of the support foot 2, a protective plate 4 movably connected to the outer side of the top of the device frame 1, a support plate 5 at the top of the device frame 1, positioning components 6 symmetrically and movably connected to the top of the support plate 5, two sets of positioning components 6 symmetrically arranged, and a support component 7 movably connected to the top of the support plate 5.

[0031] Both the support component 7 and the positioning component 6 are fixedly connected to a movable crossbar 8 at their bottoms. The device frame 1 has a drive structure 9 on its inner side, and a movable pull rod 11 is rotatably connected to one side of the support foot 2.

[0032] Specifically, the support component 7 and the positioning component 6 are provided with a lifting rod 12 at their bottom ends, and the support component 7 and the positioning component 6 are movably connected to the movable crossbar 8 through the lifting rod 12.

[0033] Specifically, the top surface of the support plate 5 is symmetrically provided with sliding grooves 501, and the inner side of the connection between the support component 7 and the positioning component 6 and the lifting rod 12 is provided with sliding grooves 10. The size of the sliding grooves 10 is adapted to the size of the support plate 5, and the lifting rod 12 is slidably connected to the support plate 5 through the sliding grooves 10.

[0034] Specifically, guide rail sliders 801 are symmetrically fixedly connected to both sides of the bottom of the movable crossbar 8, and threaded sliders 802 are fixedly connected to the middle of the bottom of the movable crossbar 8.

[0035] Specifically, a drive screw 902 is rotatably connected inside the drive structure 9, and a rotating shaft seat 901 is fixedly provided at both ends inside the drive structure 9. The drive screw 902 is rotatably connected to the drive structure 9 through the rotating shaft seat 901. Guide slide rails 903 are fixedly connected to both sides of the top of the drive structure 9, and a motor for driving is fixedly connected to one end of the drive screw 902.

[0036] Specifically, the threaded slider 802 is provided with a threaded groove that matches the drive screw 902. The drive screw 902 is connected to the threaded slider 802 through the threaded groove. The size of the guide rail slider 801 is the same as the size of the guide rail 903. The movable crossbar 8 is slidably connected to the guide rail 903 through the guide rail slider 801.

[0037] Specifically, the positioning component 6 is symmetrically provided with abutment rods 601 on its top, and one end of the abutment rod 601 is rotatably connected to abutment plate 602 through a fastening pivot. The support component 7 is fixedly installed with a support arc plate 701 on its top.

[0038] In this embodiment, to facilitate the movement of the engine supported on the device, movable crossbars 8 are fixedly connected to the bottom of both the central support assembly 7 and the two side positioning assemblies 6. Guide rail sliders 801 are symmetrically fixedly connected to the bottom sides of the movable crossbars 8, and a threaded slider 802 is fixedly connected to the middle of the bottom of the movable crossbars 8. A drive screw 902 is rotatably connected inside the drive structure 9. Rotary shaft seats 901 are fixedly installed at both ends inside the drive structure 9. The drive screw 902 is rotatably connected to the drive structure 9 through the rotary shaft seats 901. Guide rails 903 are fixedly connected to the top sides of the drive structure 9. One end of 902 is fixedly connected to a motor for driving. The threaded slider 802 has a threaded groove that matches the drive screw 902. When the motor rotates, the drive screw 902 drives the threaded slider 802 through the threaded groove. The movable crossbar 8 is limited on the guide rail 903 by the guide slider 801 through the guide slider 801. When the motor drives the threaded slider 802, the movable crossbar 8 slides on the guide rail 903, which can simultaneously adjust the position of the support component 7 and the positioning component 6, thereby changing the position of the engine supported on them.

[0039] It should be noted that the support assembly 7 and the positioning assembly 6 are provided with lifting rods 12 at their bottom ends. The support assembly 7 and the positioning assembly 6 are movably connected to the movable crossbar 8 through the lifting rods 12. The height of the support assembly 7 and the positioning assembly 6 can be adjusted by the lifting rods 12 to meet different usage requirements. The top surface of the support plate 5 is symmetrically provided with sliding grooves 501. The inner side of the connection between the support assembly 7 and the positioning assembly 6 and the lifting rods 12 is provided with sliding grooves 10. The size of the sliding grooves 10 is adapted to the size of the support plate 5. The bottom of the lifting rods 12 extends through the sliding grooves 501 and is slidably connected to the movable crossbar 8. The lifting rods 12 are slidably connected to the support plate 5 through the sliding grooves 10, so that the support assembly 7 and the positioning assembly 6 can move stably on the support plate 5, thereby facilitating the adjustment of the position of the engine supported on it.

[0040] As a further limitation of this technical solution, auxiliary support feet 401 are movably connected to the bottom end of the protective plate 4. Two sets of auxiliary support feet 401 are provided and are arranged symmetrically. One end of the two protective plates 4 is provided with a protrusion, and the two sides of the one-end protective plate 4 are provided with grooves. The two protective plates 4 are engaged with the grooves of the one-end protective plate 4 through the protrusions. When the device moves, the protective plate 4 rotates upward to prevent the engine from being hit. When the device is placed, the protective plate 4 rotates downward, and the bottom auxiliary support feet 401 protrude downward through the screw rotation, thereby providing auxiliary support for the stability of the device.

[0041] Based on the above embodiments, it can be concluded that: the support component 7 and the positioning component 6 are fixed by the support component 7 and the positioning component 6. When the position of the engine needs to be changed, the motor drives the screw 902 to drive the threaded slider 802 through the threaded groove. The movable crossbar 8 is limited on the guide rail 903 by the guide rail slider 801 through the guide rail slider 801. When the motor drives the threaded slider 802, the movable crossbar 8 slides on the guide rail 903, which can simultaneously adjust the position of the support component 7 and the positioning component 6, thereby changing the position of the engine supported on them. Moreover, when the device moves, the protective plate 4 rotates upward and is fixed by the protrusion and groove to prevent the engine from being hit. When the device is placed, the protective plate 4 rotates downward and is fixed by the protrusion and groove. The bottom auxiliary support foot 401 protrudes downward by the threaded rotation, thereby providing auxiliary support for the stability of the device.

[0042] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0043] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A piston-type aero-engine test bench, characterized in that, include: The device frame (1) has a support foot (2) at the bottom, and a caster wheel (3) is movably connected to the bottom end of the support foot (2). A protective plate (4) is movably connected to the outer top of the device frame (1). A support plate (5) is provided on the top of the device frame (1). A positioning component (6) is symmetrically connected to the top of the support plate (5). There are two sets of positioning components (6) arranged symmetrically. A support component (7) is movably connected to the top of the support plate (5). The bottom of the support component (7) and the positioning component (6) are both fixedly connected with movable crossbars (8). The inner side of the device frame (1) has a driving structure (9). The support foot (2) is rotatably connected to a movable pull rod (11). The bottom of the protective plate (4) is movably connected with an auxiliary support foot (401). The auxiliary support foot (401) is provided in two sets and is arranged symmetrically.

2. The piston-type aero-engine test bench according to claim 1, characterized in that, The support component (7) and the positioning component (6) are provided with lifting rods (12) at their bottom ends. The support component (7) and the positioning component (6) are movably connected to the movable crossbar (8) through the lifting rods (12).

3. The piston-type aero-engine test bench according to claim 1, characterized in that, The top surface of the support plate (5) is symmetrically provided with sliding grooves (501). The inner side of the connection between the support component (7) and the positioning component (6) and the lifting rod (12) is provided with sliding grooves (10). The size of the sliding groove (10) is adapted to the size of the support plate (5). The lifting rod (12) is slidably connected to the support plate (5) through the sliding groove (10).

4. The piston-type aero-engine test bench according to claim 1, characterized in that, The movable crossbar (8) has guide rail sliders (801) fixedly connected symmetrically on both sides of its bottom, and a threaded slider (802) fixedly connected in the middle of its bottom.

5. The piston-type aero-engine test bench according to claim 4, characterized in that, The drive structure (9) is rotatably connected to a drive screw (902). The drive structure (9) has a rotating shaft seat (901) fixedly installed at both ends. The drive screw (902) is rotatably connected to the drive structure (9) through the rotating shaft seat (901). The top two sides of the drive structure (9) are fixedly connected to guide rails (903). One end of the drive screw (902) is fixedly connected to a motor for driving.

6. The piston-type aero-engine test bench according to claim 5, characterized in that, The threaded slider (802) is provided with a threaded groove that is compatible with the drive screw (902). The drive screw (902) is connected to the threaded slider (802) through the threaded groove. The size of the guide rail slider (801) is the same as that of the guide rail (903). The movable crossbar (8) is slidably connected to the guide rail (903) through the guide rail slider (801).

7. The piston-type aero-engine test bench according to claim 6, characterized in that, The positioning component (6) is symmetrically provided with abutment rods (601) on the top. One end of the abutment rod (601) is rotatably connected to abutment plate (602) through a fastening pivot. The support component (7) is fixedly installed with a support arc plate (701) on the top.

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