Aviation piston type supercharged engine supercharger servo motor calibration device and method

Abstract

The invention belongs to the technical field of superchargers of aviation piston supercharged engines, and particularly relates to a device and a method for calibrating a servo motor of a supercharger of an aviation piston supercharged engine. The calibration device comprises a supercharger and a servo motor, an inhaul cable adjusting support is connected to the supercharger, a wastegate inhaul cable is arranged in the inhaul cable adjusting support in a penetrating mode, the two sides of the inhaul cable adjusting support are locked with the wastegate inhaul cable through a first adjusting nut and a second adjusting nut respectively, and a rotating wheel is rotationally connected to the servo motor. An inhaul cable pressing bolt is connected between the rotating wheel and a shell of the servo motor, and a waste gate inhaul cable is wound around the rotating wheel. The device further comprises a handheld inhaul cable steering device, a dynamometer and a gap adjusting tool. The dynamometer is provided with an inhaul cable fixing device. The wastegate inhaul cable is wound out of a rotating wheel of the servo motor, steered by the handheld inhaul cable steering device and then connected to the inhaul cable fixing device. The gap adjusting tool is clamped on the waste gate inhaul cable and located between the first adjusting nut and the inhaul cable adjusting support. The invention provides an aviation piston type supercharged engine supercharger servo motor calibration device and method.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of superchargers of aviation piston supercharged engines, and particularly relates to a supercharger servo motor calibration device and method for an aviation piston supercharged engine. BACKGROUND

[0002] With the development of navigation technology and "low-altitude economy", the unmanned aerial vehicle industry has become a star in high-tech enterprises. Unmanned aerial vehicles not only serve as a new type of information acquisition carrier, but also inject new vitality into low-altitude economy. They have high mobility, operability and adaptability to operating environments, and are increasingly used in various industries.

[0003] Power is the core professional part of unmanned aerial vehicles, which limits the use of unmanned aerial vehicles in many ways. At present, the power source of large unmanned aerial vehicles is mainly a piston engine + propeller. In order to improve the performance indicators of the piston engine at high altitudes, a waste gas turbocharger is often used to increase the intake pressure of the engine. However, after the engine is integrated and installed on the unmanned aerial vehicle, the position of the wastegate cable needs to be calibrated, so a supercharger wastegate cable calibration method is designed.

[0004] Existing piston engine superchargers are mostly mechanical, and need to be matched with a servo motor and a wastegate cable to realize supercharging pressure control. However, the servo motor does not have an automatic calibration method and needs to be calibrated manually. In addition, due to the differences in installation position and installation method of the engine matched with different unmanned aerial vehicle models, the calibration of the servo motor lacks a unified execution standard, greatly increasing the operation difficulty. With the prosperity of the aviation industry, the use of aviation piston engines is further increasing, and the calibration of the supercharger is closely related to the performance of the engine. Without a unified method, the product consistency is poor, there are flight safety hazards, and a lot of manpower, material resources and financial resources are wasted. SUMMARY

[0005] In order to solve the above problems existing in the prior art, the purpose of the present application is to provide a servo motor calibration device and method for an aviation piston supercharged engine supercharger.

[0006] The technical solution adopted by the present application is: The application discloses a kind of aviation piston supercharged engine supercharger servo motor calibration device, including supercharger and servo motor, supercharger is connected with cable adjustment support, cable adjustment support is arranged with waste gate cable, the two sides of cable adjustment support are locked with waste gate cable by first adjusting nut and second adjusting nut respectively, rotating wheel is rotatably connected on servo motor, rotating wheel is connected with servo motor shell with cable compression bolt, waste gate cable is wound from rotating wheel;It further includes handheld cable steering device, dynamometer and gap adjustment tool, and cable fixing device is arranged on the dynamometer;After waste gate cable is wound from rotating wheel of servo motor, it is connected to cable fixing device after steering by handheld cable steering device;Gap adjustment tool is clamped on waste gate cable, and gap adjustment tool is located between first adjusting nut and cable adjustment support.

[0007] The calibration device of the application is adapted to different specifications of servo motor and cable, and is simple to operate and good in compatibility.The gap adjustment tool can adjust the gap size required for calibration according to requirements, and is convenient to operate, simple in structure, reliable, short in manufacturing period, low in production cost, good in compatibility, and can be used in different quantities to adapt to different use requirements.The handheld cable steering device can match different servo motor installation positions, adjust the direction of waste gate cable to a direction convenient for operation, and is compatible with different specifications of waste gate cable, and is convenient to operate, simple in structure, reliable, short in manufacturing period, low in production cost, and can meet use requirements in various environments.The tension test tool composed of dynamometer and cable fixing device can quantitatively calibrate cable tension, avoid over-looseness or over-tightness, and ensure the consistency of product calibration.

[0008] As a preferred scheme of the application, the servo motor is fixed to a guide block, and the guide block is provided with a first guide hole and a second guide hole;The waste gate cable passes through the first guide hole, is wound around the rotating wheel for half a turn, and then passes out of the second guide hole.

[0009] As a preferred scheme of the application, the first guide hole and the second guide hole are parallel.

[0010] As a preferred scheme of the application, the gap adjustment tool is provided with a wedge-shaped gap, and the gap adjustment tool is clamped on the waste gate cable through the wedge-shaped gap.

[0011] As a preferred scheme of the application, the handheld cable steering device comprises a handheld handle, two support rods are fixed to one end of the handheld handle, a steering wheel is rotatably connected between the two support rods, a cable groove is arranged on the circumferential surface of the steering wheel, and the waste gate cable is overlapped on a section of the cable groove.

[0012] As a preferred scheme of the application, the dynamometer comprises a force measuring shell, a pull ring is fixed to the force measuring shell, a force spring is connected in the force measuring shell, and the cable fixing device is connected to the other end of the force spring.

[0013] As a preferred scheme of the present application, a pointer is connected to the end of the force spring, and a tension value mark is arranged on the force shell, and the pointer indicates the tension value on the tension value mark.

[0014] As a preferred scheme of the present application, the cable fixing device comprises a fixing block connected to the end of the force spring, a cable fixing hole arranged on the fixing block, the waste gate cable passing through the cable fixing hole, a compression bolt threadedly connected to the fixing block, and a copper block fixed on the compression bolt, and the waste gate cable is compressed between the copper block and the inner wall of the fixing block.

[0015] A method for calibrating a servo motor of a turbocharger of an aviation piston supercharged engine, comprising the following steps: S1: installing the servo motor to a specified installation position of the unmanned aerial vehicle, and adjusting the opening of the servo motor to the maximum; S2: loosening the first adjusting nut and the second adjusting nut, and adjusting the cable adjusting bracket to the central position of the screw rod of the turbocharger; S3: clamping the waste gate cable between the first adjusting nut and the cable adjusting bracket by using a gap adjusting tool, keeping the position of the cable adjusting bracket unchanged, and tightening the first adjusting nut and the second adjusting nut; S4: winding the other end of the waste gate cable around the rotating wheel on the servo motor, adjusting the direction of the waste gate cable to a direction convenient for operation by using a handheld cable steering tool, and fixing the waste gate cable to the cable fixing device of the force gauge; S5: pulling the force gauge along the direction of the waste gate cable, keeping the value of the force gauge in the required range, and fixing the waste gate cable and the servo motor; S6: keeping the position of the first adjusting nut unchanged, loosening the second adjusting nut, taking out the gap adjusting tool, adjusting the cable adjusting bracket to be in close contact with the first adjusting nut, and tightening the second adjusting nut; S7: loosening the waste gate cable from the cable fixing device, taking out the waste gate cable, and completing the calibration work.

[0016] The method for calibrating the servo motor of the turbocharger of the aviation piston supercharged engine is simple in operation, good in consistency, and high in reliability, can quantitatively reserve the size of the gap, and can adjust the size of the reserved gap according to the actual situation, can adjust the direction of the waste gate cable, is convenient for calibration under various installation conditions, can quantitatively ensure the size of the tensioning force, is simple in operation, and ensures the consistency of the calibrated products.

[0017] As a preferred scheme of the present application, in step S3, the depth of clamping of the gap adjusting tool into the waste gate cable is different according to the thickness of the waste gate cable; and in step S4, the depth of clamping of the waste gate into the handheld cable steering device is different according to the thickness of the waste gate cable.

[0018] The beneficial effects of the present application are: The present application is adapted to different specifications of servo motors and cables, and has simple operation, good compatibility. The gap adjustment tool can adjust the required gap size according to the demand, and has convenient operation, simple and reliable structure, short manufacturing period, low production cost, good compatibility, and can be matched with different quantities to adapt to different use requirements. The handheld cable steering device can match different servo motor installation positions, adjust the exhaust valve cable direction to a direction convenient for operation, and can be compatible with different specifications of exhaust valve cables, and has convenient operation, simple and reliable structure, short manufacturing period, low production cost, and can meet the use requirements in various environments. The tension test tool composed of the force gauge and the cable fixing device can quantitatively calibrate the cable tension, avoid the problems of over-looseness or over-tightness, and ensure the consistency of product calibration. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a partial enlarged view of A in Figure 1 Figure 3 is a partial enlarged view of B in Figure 1 Figure 4 is a structural schematic diagram of the gap adjustment tool; Figure 5 is a structural schematic diagram of the handheld cable steering device; Figure 6 is a structural schematic diagram of the force gauge.

[0020] In the figure: 1 - supercharger; 2 - servo motor; 3 - cable adjustment support; 4 - exhaust valve cable; 5 - handheld cable steering device; 6 - force gauge; 7 - gap adjustment tool; 8 - cable fixing device; 21 - rotating wheel; 22 - cable compression bolt; 23 - guide block; 41 - first adjusting nut; 42 - second adjusting nut; 51 - handheld handle; 52 - support rod; 53 - steering wheel; 61 - force gauge shell; 62 - pull ring; 63 - pointer; 71 - wedge-shaped notch; 81 - fixed block; 82 - cable fixing hole; 83 - compression bolt; 84 - copper block; 231 - first guide hole; 232 - second guide hole; 531 - cable groove. DETAILED DESCRIPTION

[0021] ​​To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the invention can be combined with each other.

[0023] like Figures 1-3 As shown, the turbocharger servo motor calibration device for an aviation piston turbocharged engine in this embodiment includes a turbocharger 1 and a servo motor 2. A cable adjustment bracket 3 is connected to the turbocharger 1, and an exhaust valve cable 4 passes through the cable adjustment bracket 3. The two sides of the cable adjustment bracket 3 are locked to the exhaust valve cable 4 by a first adjusting nut 41 and a second adjusting nut 42, respectively. A rotating wheel 21 is rotatably connected to the servo motor 2, and a cable clamping bolt 22 is connected between the rotating wheel 21 and the housing of the servo motor 2. The exhaust valve cable 4 passes over the rotating wheel 21. The device also includes a handheld cable steering device 5, a force gauge 6, and a gap adjustment fixture 7. A cable fixing device 8 is provided on the force gauge 6. After the exhaust valve cable 4 passes over the rotating wheel 21 of the servo motor 2, it is turned by the handheld cable steering device 5 and then connected to the cable fixing device 8. The gap adjustment fixture 7 is clamped on the exhaust valve cable 4 and is located between the first adjusting nut 41 and the cable adjustment bracket 3.

[0024] The calibration device of this invention is compatible with servo motors 2 and cables of different specifications, and is simple to operate and highly compatible. The gap adjustment fixture 7 can adjust the gap size required for calibration according to needs, is easy to operate, has a simple and reliable structure, a short manufacturing cycle, low production cost, and good compatibility; it can be used in different quantities to adapt to different usage requirements. The handheld cable steering device 5 can be matched with different servo motor 2 installation positions to adjust the direction of the exhaust valve cable 4 to a direction convenient for operation. It is also compatible with exhaust valve cables 4 of different specifications, is easy to operate, has a simple and reliable structure, a short manufacturing cycle, low production cost, and can meet the usage needs in various environments. The tension force testing fixture composed of the force gauge 6 and the cable fixing device 8 can quantitatively calibrate the cable tension force, avoiding problems of being too loose or too tight, and ensuring the consistency of product calibration.

[0025] Furthermore, the servo motor 2 is fixed to the guide block 23, which has a first guide hole 231 and a second guide hole 232. The exhaust valve cable 4 passes through the first guide hole 231, wraps half a turn around the rotating wheel 21, and then exits through the second guide hole 232. The first guide hole 231 and the second guide hole 232 are parallel.

[0026] Specifically, such as Figure 4 As shown, the gap adjustment fixture 7 is provided with a wedge-shaped notch 71, and the gap adjustment fixture 7 is locked onto the exhaust valve cable 4 through the wedge-shaped notch 71.

[0027] like Figure 5 As shown, the handheld cable steering device 5 includes a handheld handle 51, one end of which is fixed with two support rods 52, and a steering wheel 53 is rotatably connected between the two support rods 52. A cable groove 531 is provided on the circumferential surface of the steering wheel 53, and the exhaust valve cable 4 overlaps a section of the cable groove 531.

[0028] like Figure 6 As shown, the force gauge 6 includes a force measuring housing 61, a pull ring 62 fixed on the force measuring housing 61, a force measuring spring connected inside the force measuring housing 61, and a cable fixing device 8 connected to the other end of the force measuring spring. A pointer 63 is connected to the end of the force measuring spring, and a tension value mark is provided on the force measuring housing 61. The pointer 63 indicates the tension value on the tension value mark.

[0029] The cable fixing device 8 includes a fixing block 81, which is connected to the end of the force measuring spring. The fixing block 81 is provided with a cable fixing hole 82, through which the exhaust valve cable 4 passes. A clamping bolt 83 is threadedly connected to the fixing block 81, and a copper block 84 is fixed on the clamping bolt 83. The exhaust valve cable 4 is pressed between the copper block 84 and the inner wall of the fixing block 81.

[0030] The calibration method for the turbocharger servo motor of the aviation piston turbocharger in this embodiment includes the following steps: S1: Install servo motor 2 into the designated installation position on the drone, and adjust the opening of servo motor 2 to the maximum; S2: Loosen the first adjusting nut 41 and the second adjusting nut 42, and adjust the cable adjusting bracket 3 to the center position of the screw of the booster 1; S3: Use the gap adjustment tool 7 to lock onto the exhaust valve cable 4 between the first adjusting nut 41 and the cable adjustment bracket 3; depending on the thickness of the exhaust valve cable 4, the gap adjustment tool 7 is inserted into the exhaust valve cable 4 to different depths; keep the cable adjustment bracket 3 in the center position and tighten the first adjusting nut 41 and the second adjusting nut 42. S4: the other end of the wastegate cable 4 is clamped in the rotating wheel 21 of the servo motor 2 after passing through the first guide hole 231 of the guide block 23 on the servo motor 2, and then is pulled out through the second guide hole 232 of the guide block 23; the direction of the wastegate cable 4 is adjusted to a convenient direction by using a hand-held cable steering tool, and the wastegate cable 4 is fixed on the cable fixing device 8 of the dynamometer 6; according to the different thickness of the wastegate cable 4, the depth of the wastegate clamped on the steering wheel 53 is different; S5: the dynamometer 6 is pulled along the direction of the wastegate cable 4, so that the value of the dynamometer 6 is stabilized in the required range, the cable compression screw 22 of the servo motor 2 is tightened, and the wastegate cable 4 is fixed with the servo motor 2; S6: the position of the first adjusting nut 41 is kept unchanged, the second adjusting nut 42 is loosened, the gap adjusting tool 7 is taken out, the cable adjusting bracket 3 is adjusted to be in contact with the first adjusting nut 41, and the second adjusting nut 42 is tightened; S7: the wastegate cable 4 is loosened from the cable fixing device 8, the wastegate cable 4 is taken out, and the tool is collected to complete the calibration work.

[0031] The aviation piston supercharged engine supercharger servo motor calibration method of the present application is simple to operate, good in consistency, and high in reliability; the size of the quantified reserved gap can be adjusted according to the actual situation; the direction of the wastegate cable 4 can be adjusted, which is convenient for calibration under various installation conditions; the tensioning force size can be quantitatively guaranteed, the operation is simple, and the consistency of the calibrated products is guaranteed.

[0032] The present application is not limited to the above-mentioned optional embodiments, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any changes in shape or structure, any technical solution falling within the scope defined by the claims of the present application falls within the protection scope of the present application.

Claims

1. A calibration device for a servo motor of a supercharger in an aircraft piston supercharger engine, comprising a supercharger (1) and a servo motor (2), wherein a cable adjustment bracket (3) is connected to the supercharger (1), an exhaust valve cable (4) is inserted through the cable adjustment bracket (3), and the two sides of the cable adjustment bracket (3) are respectively locked to the exhaust valve cable (4) by a first adjustment nut (41) and a second adjustment nut (42), a rotating wheel (21) is rotatably connected to the servo motor (2), and a cable clamping bolt (22) is connected between the rotating wheel (21) and the housing of the servo motor (2), and the exhaust valve cable (4) passes over the rotating wheel (21); characterized in that: It also includes a handheld cable steering device (5), a force gauge (6) and a gap adjustment fixture (7). The force gauge (6) is equipped with a cable fixing device (8). The exhaust valve cable (4) is wound around the rotating wheel (21) of the servo motor (2), and after being turned by the handheld cable steering device (5), it is connected to the cable fixing device (8). The gap adjustment fixture (7) is locked on the exhaust valve cable (4). The gap adjustment fixture (7) is located between the first adjusting nut (41) and the cable adjusting bracket (3).

2. The calibration device for the servo motor of the turbocharger of an aero-piston turbocharged engine according to claim 1, characterized in that: The servo motor (2) is fixed to the guide block (23), and the guide block (23) is provided with a first guide hole (231) and a second guide hole (232). After the exhaust valve cable (4) passes through the first guide hole (231), it wraps half a turn on the rotating wheel (21) and then passes out through the second guide hole (232).

3. The calibration device for the servo motor of the turbocharger of an aero-piston turbocharged engine according to claim 2, characterized in that: The first guide hole (231) and the second guide hole (232) are parallel.

4. The calibration device for the supercharger servo motor of an aircraft piston supercharged engine according to claim 1, characterized in that: The gap adjustment fixture (7) is provided with a wedge-shaped notch (71), and the gap adjustment fixture (7) is locked onto the exhaust valve cable (4) through the wedge-shaped notch (71).

5. The calibration device for the supercharger servo motor of an aero-piston supercharged engine according to claim 1, characterized in that: The handheld cable steering device (5) includes a handheld handle (51), one end of which is fixed with two support rods (52), and a steering wheel (53) is rotatably connected between the two support rods (52). A cable groove (531) is provided on the circumferential surface of the steering wheel (53), and the exhaust valve cable (4) overlaps a section of the cable groove (531).

6. The calibration device for the servo motor of the turbocharger of an aero-piston turbocharged engine according to claim 1, characterized in that: The force gauge (6) includes a force measuring housing (61), a pull ring (62) is fixed on the force measuring housing (61), a force measuring spring is connected inside the force measuring housing (61), and a cable fixing device (8) is connected to the other end of the force measuring spring.

7. A calibration device for a turbocharger servo motor of an aircraft piston turbocharged engine according to claim 6, characterized in that: The end of the force measuring spring is connected to a pointer (63), and the force measuring housing (61) is provided with a tension value mark. The pointer (63) indicates the tension value on the tension value mark.

8. A calibration device for a turbocharger servo motor of an aircraft piston turbocharged engine according to claim 6, characterized in that: The cable fixing device (8) includes a fixing block (81), which is connected to the end of the force measuring spring. The fixing block (81) is provided with a cable fixing hole (82), through which the exhaust valve cable (4) passes. A clamping bolt (83) is threaded onto the fixing block (81), and a copper block (84) is fixed on the clamping bolt (83). The exhaust valve cable (4) is pressed between the copper block (84) and the inner wall of the fixing block (81).

9. A method for calibrating the servo motor of a turbocharger in an aircraft piston turbocharged engine, using the servo motor calibration device for a turbocharger in an aircraft piston turbocharged engine as described in any one of claims 1 to 8, characterized in that: Includes the following steps: S1: Install the servo motor (2) to the specified installation position of the UAV and adjust the opening of the servo motor (2) to the maximum; S2: Loosen the first adjusting nut (41) and the second adjusting nut (42), and adjust the cable adjusting bracket (3) to the center position of the screw of the booster (1); S3: Use the gap adjustment tool (7) to lock onto the exhaust valve cable (4) between the first adjustment nut (41) and the cable adjustment bracket (3); keep the cable adjustment bracket (3) in the center position and tighten the first adjustment nut (41) and the second adjustment nut (42). S4: Wrap the other end of the exhaust valve cable (4) around the rotating wheel (21) on the servo motor (2), use the hand-held cable steering tool to adjust the direction of the exhaust valve cable (4) to a direction that is easy to operate, and fix the exhaust valve cable (4) on the cable fixing device (8) of the force gauge (6); S5: Pull the force gauge (6) along the direction of the exhaust valve cable (4) to stabilize the value of the force gauge (6) within the required range, and fix the exhaust valve cable (4) to the servo motor (2); S6: Keep the position of the first adjusting nut (41) unchanged, loosen the second adjusting nut (42), take out the gap adjustment fixture (7), adjust the cable adjustment bracket (3) to fit with the first adjusting nut (41), and tighten the second adjusting nut (42). S7: Loosen the exhaust valve cable (4) from the cable fixing device (8), remove the exhaust valve cable (4), and tidy up the tooling to complete the calibration work.

10. A calibration method for a turbocharger servo motor of an aero-piston turbocharged engine according to claim 9, characterized in that: In step S3, the gap adjustment tool (7) is inserted into the exhaust valve cable (4) to different depths depending on the thickness of the exhaust valve cable (4); in step S4, the exhaust valve is inserted into the hand-held cable steering device (5) to different depths depending on the thickness of the exhaust valve cable (4).

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