Turboshaft engine throttle control structure for bench test

Abstract

The utility model relates to a turboshaft engine throttle control structure for bench test, which is connected with a servo motor assembly and an engine and comprises a driving rocker arm assembly and a multi-stage connecting rod assembly, the engine comprises an engine body and an engine throttle control assembly, and the servo motor assembly comprises a servo motor, a servo motor output shaft and a servo motor mounting seat. The multi-stage connecting rod assembly comprises a first connecting rod connector, an adjustable push rod, a second connecting rod connector, a connecting rod rocker arm, a connecting rod installation base, a third connecting rod connector and an accelerator rocker arm connecting rod, and the engine accelerator control assembly comprises a pull rod bearing, an installation ball head and an accelerator rocker arm. And the other tail end of the connecting rod rocker arm is connected with one tail end of the accelerator rocker arm connecting rod, and the other tail end of the accelerator rocker arm connecting rod is connected with the accelerator rocker arm and used for converting a voltage signal of a rack control console accelerator lever into a circular motion load of the servo motor and transmitting the circular motion load to the accelerator rocker arm, so that the oil supply amount of an engine is further controlled.

Description

Technical fields:

[0001] This utility model relates to a throttle control structure for a turboshaft engine used in bench testing, which belongs to the field of aero-engine technology. Background technology:

[0002] In small aircraft, traditional solutions often use mechanical linkages or flexible steel cables to drive the throttle. Mechanical linkage control systems transmit operating forces through rigid linkages, which suffers from problems such as large installation space, complex structure, and poor adaptability (e.g., Figure 1 The flexible cable control system is simple in structure, lightweight, and can bend naturally, enabling linear movement. However, its length is generally not adjustable (e.g., ...). Figure 2 The latter is widely used in modern small aircraft, applied to throttle control within a few meters.

[0003] Unlike helicopters, the various systems on a turboshaft engine test bench are located in different spaces and are far apart. The throttle lever is located on the control panel, while the turboshaft engine and its throttle control mechanism are located on the engine mounting frame. The two are tens of meters apart and need to pass through walls and be laid in cable trays. Using traditional mechanical linkages or soft steel cables for control results in complex structures, large cable requirements, and low control precision.

[0004] Therefore, it is indeed necessary to improve existing technologies to address their shortcomings. Utility Model Content:

[0005] This utility model provides a throttle control structure for a turboshaft engine used in bench testing in order to solve the problems existing in the prior art.

[0006] The technical solution adopted in this utility model is as follows: a throttle control structure for a turboshaft engine used in bench testing, which connects a servo motor assembly and an engine, including a drive rocker arm assembly and a multi-stage linkage assembly. The engine includes an engine body and an engine throttle control assembly mounted on the engine body. The servo motor assembly includes a servo motor, a servo motor output shaft, and a servo motor mounting base. The servo motor is connected to a servo motor controller via a cable. The servo motor controller is communicatively connected to a bench control throttle lever. The servo motor controller receives voltage signals output by the bench control throttle lever. The drive rocker arm assembly is fixed on the servo motor output shaft. The multi-stage linkage assembly includes... The engine throttle control assembly comprises a first connecting rod joint, an adjustable push rod, a second connecting rod joint, a connecting rod rocker arm, a connecting rod mounting base, a third connecting rod joint, and a throttle rocker arm connecting rod. The connecting rod rocker arm is mounted on the engine body via the connecting rod mounting base. One end of the connecting rod rocker arm is connected to the adjustable push rod via the second connecting rod joint. The other end of the connecting rod rocker arm is connected to one end of the throttle rocker arm connecting rod via the third connecting rod joint. The other end of the throttle rocker arm connecting rod is connected to the throttle rocker arm via the connecting rod bearing and the mounting ball head. This assembly is used to convert the voltage signal of the throttle lever on the control panel into a servo motor circular motion load and transmit it to the throttle rocker arm.

[0007] Furthermore, the drive rocker arm assembly includes a drive rocker arm and a clamping bolt, wherein the drive rocker arm is fixed to the output shaft of the servo motor by the clamping bolt.

[0008] Furthermore, the adjustable push rod includes a first push rod, a second push rod, and a push rod mounting component threaded to the outside of the first push rod and the second push rod.

[0009] Furthermore, the throttle rocker arm connecting rod includes a first connecting rod, a second connecting rod, and a connecting rod mounting component threaded to the outside of the first connecting rod and the second connecting rod.

[0010] Furthermore, the threads at both ends of the push rod mounting component and the connecting rod mounting component are positive and negative threads, with the threads rotating in opposite directions, in order to adjust the length of the adjustable push rod and the throttle rocker arm connecting rod.

[0011] Furthermore, the throttle lever is operated at 120°, the servo motor output shaft rotates at 120°, and the throttle rocker arm rotates at 60°. The ratio between the angle of the throttle lever operation, the angle of the servo motor output shaft rotation, and the angle of the throttle rocker arm rotation is 2:1.

[0012] This utility model has the following beneficial effects:

[0013] (1) High-precision throttle control: The rigid connection mechanism is driven by a servo motor to eliminate soft drive operation errors;

[0014] (2) Universal design: The length of the connecting rod structure is adjustable in multiple sections to meet the bench test requirements of different types of turboshaft engines;

[0015] (3) The throttle lever and the servo controller are connected by communication. The throttle lever outputs a voltage signal to the servo controller, which drives the servo motor to rotate, which in turn drives the rocker arm assembly, the multi-stage linkage assembly and the throttle rocker arm to rotate, thereby achieving the purpose of controlling the engine throttle opening and simulating the engine stop position, start position, idle position and flight position. Attached image description:

[0016] Figure 1 This is a schematic diagram of an existing mechanical linkage control system.

[0017] Figure 2 This is a schematic diagram of an existing flexible cable-operated control system.

[0018] Figure 3 This is a schematic diagram showing the relationship between the throttle control structure and the engine of the turboshaft engine used in bench testing of this utility model.

[0019] Figure 4 This is a schematic diagram of the throttle control structure of the turboshaft engine used for bench testing of this utility model.

[0020] Figure 5 for Figure 4 A diagram from another angle. Detailed implementation method:

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] This utility model relates to a throttle control structure for a turboshaft engine used in bench testing. It connects a servo motor assembly 1 and the engine, and includes a drive rocker arm assembly 2 and a multi-stage linkage assembly 3. The engine includes an engine body and an engine throttle control assembly 4 mounted on the engine body.

[0023] The servo motor assembly 1 includes a servo motor 11, a servo motor output shaft 12, and a servo motor mounting base 13. The servo motor 11 is connected to the servo motor controller via a cable.

[0024] The drive rocker arm assembly 2 includes a drive rocker arm 21 and a clamping bolt 22. The drive rocker arm 21 is fixed to the output shaft 12 of the servo motor by the clamping bolt 22.

[0025] The multi-stage linkage assembly 3 includes a first linkage joint 31, an adjustable push rod 32, a second linkage joint 33, a linkage rocker arm 34, a linkage mounting base 35, a third linkage joint 36, a throttle rocker arm connecting rod 37, and a linkage connecting bolt 38. The engine throttle control assembly 4 includes a tie rod bearing 41, a mounting ball joint 42, and a throttle rocker arm 43. The adjustable push rod 32 includes a first push rod 320, a second push rod 321, and a push rod mounting member 322 threadedly connected to the outside of the first push rod 320 and the second push rod 321. The throttle rocker arm connecting rod 37 includes a first connecting rod 370, a second connecting rod 371, and a connecting rod mounting member 372 threadedly connected to the outside of the first connecting rod 370 and the second connecting rod 371. The threads at both ends of the push rod mounting member 322 and the connecting rod mounting member 372 are positive and negative threads, respectively, with opposite rotation directions, used to adjust the length of the adjustable push rod 32 and the throttle rocker arm connecting rod 37. The connecting rod bolt 38 is used to connect the adjustable push rod 32, the connecting rod rocker arm 34 and other components.

[0026] The connecting rod rocker arm 34 is mounted on the engine body via the connecting rod mounting seat 35. One end of the connecting rod rocker arm 34 is connected to the adjustable push rod 32 via the second connecting rod joint 33. The other end of the connecting rod rocker arm 34 is connected to one end of the throttle rocker arm connecting rod 37 via the third connecting rod joint 36. The other end of the throttle rocker arm connecting rod 37 is connected to the throttle rocker arm 43 via the tie rod bearing 41 and the mounting ball head 42, for transmitting the circumferential motion load of the servo motor assembly 1 to the throttle rocker arm 43.

[0027] The working principle of this utility model's turboshaft engine throttle control structure for bench testing is as follows: The bench operator pushes the throttle lever (from 0° to 120°) to the target position, linearly outputting a 0-10V voltage signal. The servo motor controller receives the voltage signal and controls the servo motor output shaft 12 to rotate, which in turn drives the rocker arm 21 to rotate. The operator pushing the throttle lever to the target position and then outputting a voltage signal to the servo motor controller is common knowledge in the field and will not be elaborated upon here. In one specific embodiment, assuming the throttle lever is operated at 120°, the servo motor output shaft rotates 120°, and the rocker arm rotates 60°, the ratio of the throttle lever operation angle, the servo motor output shaft rotation angle, and the rocker arm rotation angle is 2:1. In other embodiments, the ratio of these ratios can be set according to actual conditions. Finally, by setting different throttle rocker arm rotation angles to match different throttle openings, the throttle opening size is controlled to enter the stop, start, idle, and flight positions.

[0028] The multi-stage connecting rod assembly 3 can adapt to the different installation heights of engines with different power outputs and the differences in the axial installation positions of the upper and lower engine platforms by adjusting the length of the adjustable push rod 32, the throttle rocker arm connecting rod 37 and the position of the connecting rod mounting seat 35.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A throttle control structure for a turboshaft engine used in bench testing, which connects a servo motor assembly (1) and the engine, characterized in that: The system includes a drive rocker arm assembly (2) and a multi-stage linkage assembly (3). The engine includes an engine body and an engine throttle control assembly (4) mounted on the engine body. The servo motor assembly (1) includes a servo motor (11), a servo motor output shaft (12), and a servo motor mounting base (13). The servo motor (11) is connected to a servo motor controller via a cable. The servo motor controller is communicatively connected to a bench control throttle lever. The servo motor controller receives voltage signals output by the bench control throttle lever. The drive rocker arm assembly (2) is fixed on the servo motor output shaft (12). The multi-stage linkage assembly (3) includes a first linkage joint (31), an adjustable push rod (32), a second linkage joint (33), a linkage rocker arm (34), a linkage mounting base (35), and a third linkage. The engine throttle control assembly (4) includes a rod joint (36) and a throttle rocker arm connecting rod (37). The engine throttle control assembly (4) includes a tie rod bearing (41), a mounting ball (42), and a throttle rocker arm (43). The connecting rod rocker arm (34) is mounted on the engine body via a connecting rod mounting seat (35). One end of the connecting rod rocker arm (34) is connected to an adjustable push rod (32) via a second connecting rod joint (33). The other end of the connecting rod rocker arm (34) is connected to one end of the throttle rocker arm connecting rod (37) via a third connecting rod joint (36). The other end of the throttle rocker arm connecting rod (37) is connected to the throttle rocker arm (43) via a tie rod bearing (41) and a mounting ball (42). This is used to convert the voltage signal of the throttle lever on the control panel into a circumferential motion load of the servo motor and transmit it to the throttle rocker arm (43).

2. The throttle control structure for a turboshaft engine used in bench testing as described in claim 1, characterized in that: The drive rocker arm assembly (2) includes a drive rocker arm (21) and a clamping bolt (22), wherein the drive rocker arm (21) is fixed to the output shaft (12) of the servo motor by the clamping bolt (22).

3. The throttle control structure for a turboshaft engine used in bench testing as described in claim 2, characterized in that: The adjustable push rod (32) includes a first push rod (320), a second push rod (321), and a push rod mounting part (322) threaded to the outside of the first push rod (320) and the second push rod (321).

4. The throttle control structure for a turboshaft engine used in bench testing as described in claim 3, characterized in that: The throttle rocker arm connecting rod (37) includes a first connecting rod (370), a second connecting rod (371), and a connecting rod mounting piece (372) threaded to the outside of the first connecting rod (370) and the second connecting rod (371).

5. The throttle control structure for a turboshaft engine used in bench testing as described in claim 4, characterized in that: The threads at both ends of the push rod mounting part (322) and the connecting rod mounting part (372) are positive and negative threads, respectively, with the threads rotating in opposite directions, in order to adjust the length of the adjustable push rod (32) and the throttle rocker arm connecting rod (37).

6. The throttle control structure for a turboshaft engine used in bench testing as described in claim 5, characterized in that: The throttle lever is operated at 120°, the servo motor output shaft rotates at 120°, and the throttle rocker arm rotates at 60°. The ratio of the throttle lever operation angle, the servo motor output shaft rotation angle, and the throttle rocker arm rotation angle is 2:1.

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