A steel cable type throttle lever control connection mechanism for aircraft engine test

Abstract

A cable-type throttle lever control connection mechanism for aircraft engine testing belongs to the field of aircraft engine testing technology. The overall structure adopts a left-right mirror symmetric structure, including a support and attitude adjustment unit, a quick-install adapter unit, a friction-reducing and sliding unit, a cable, and a connecting rod; the quick-install adapter unit is arranged on the support and attitude adjustment unit; the friction-reducing and sliding unit is arranged on the quick-install adapter unit; one end of the cable is connected to the quick-install adapter unit, and the other end of the cable is connected to the friction-reducing and sliding unit; one end of the connecting rod is connected to the friction-reducing and sliding unit, and the other end of the connecting rod is connected to the engine throttle lever. The cable-type throttle lever control connection mechanism for aircraft engine testing of the present invention can meet the requirement that the push-pull force of the engine throttle lever is greater than 500N, can meet the requirement that the positioning accuracy of the throttle lever does not exceed 0.1 degrees under the condition of variable installation angles, and can meet the requirement of a rapid push-pull of 0.6 seconds when the throttle lever is pushed from the slow position to the maximum position.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation engine test running, and in particular relates to a steel cable type throttle lever control connection mechanism for aviation engine test running. Background Art

[0002] During the test run of an aircraft engine, a large amount of residual oil usually flows to the bottom of the engine. The motor in the traditional throttle lever control mechanism is also installed under the engine. The residual oil flowing onto the motor will seriously affect its safety. Once the motor fails due to the residual oil, it may cause the throttle lever control to fail, or even cause a major quality accident.

[0003] To this end, technicians proposed the use of a steel cable throttle lever control system. However, there are technical difficulties in connecting the steel cable to the engine. How to meet the push and pull force requirements of the engine throttle lever while also meeting the needs of variable installation angles and rapid pushing and pulling has become a technical problem that needs to be solved urgently. Summary of the Invention

[0004] In response to the problems existing in the prior art, the present invention provides a steel cable-type throttle lever control connection mechanism for aircraft engine testing, which can meet the requirement that the push-pull force of the engine throttle lever is greater than 500N, and can meet the requirement that the positioning accuracy of the throttle lever does not exceed 0.1 degrees under the condition of variable installation angles. In the process of pushing the throttle lever from the slow position to the maximum position, it can meet the rapid push-pull requirement of 0.6 seconds.

[0005] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a steel cable-type throttle lever control connection mechanism for aircraft engine testing, which adopts a left-right mirror-symmetrical structure as a whole, including a support and attitude adjustment unit, a quick-install adapter unit, a friction-reducing and sliding unit, a steel cable and a connecting rod; the quick-install adapter unit is arranged on the support and attitude adjustment unit; the friction-reducing and sliding unit is arranged on the quick-install adapter unit; one end of the steel cable is connected to the quick-install adapter unit, and the other end of the steel cable is connected to the friction-reducing and sliding unit; one end of the connecting rod is connected to the friction-reducing and sliding unit, and the other end of the connecting rod is connected to the engine throttle lever.

[0006] The support and posture adjustment unit includes a lower support plate, an upper support plate, a first support bolt assembly, a second support bolt assembly and a third support bolt assembly; the lower support plate and the upper support plate are arranged in parallel, and the upper support plate is located directly above the lower support plate; the first support bolt assembly, the second support bolt assembly and the third support bolt assembly are vertically installed between the lower support plate and the upper support plate and are distributed in a triangular pattern; the lower ends of the screws of the first support bolt assembly and the second support bolt assembly are directly screwed and fixed to the lower support plate through threaded holes, and the upper ends of the screws of the first support bolt assembly and the second support bolt assembly are connected to the upper support plate through long holes; the upper end of the screw of the third support bolt assembly is directly screwed and fixed to the upper support plate through threaded holes, and the lower end of the screw of the third support bolt assembly is connected to the lower support plate through long holes.

[0007] The elongated holes on the lower support plate and the elongated holes on the upper support plate have the same size and are distributed in parallel.

[0008] The quick-release adapter unit includes a lower quick-release adapter seat, an upper quick-release adapter seat, a first quick-release ring first pin and a second quick-release ring first pin; the lower quick-release adapter seat is fixedly installed above the upper support plate; the upper quick-release adapter seat is arranged above the lower quick-release adapter seat, one end of the lower quick-release adapter seat is fixedly connected to the upper quick-release adapter seat through the first quick-release ring first pin, and the other end of the lower quick-release adapter seat is fixedly connected to the upper quick-release adapter seat through the second quick-release ring first pin.

[0009] The first pin of the first quick-release ring and the first pin of the second quick-release ring are oriented in opposite directions and are distributed in parallel.

[0010] The friction-reducing sliding unit includes a slide rail, a slider and a steel cable adapter; the slide rail is horizontally fixedly installed above the upper quick-release adapter; the slider is slidably connected to the slide rail; the steel cable adapter is fixedly installed on the slider; one end of the steel cable is screwed and fixed to the steel cable adapter, and the other end of the steel cable is screwed and fixed to the upper quick-release adapter, and the steel cable is distributed parallel to the slide rail.

[0011] An elastic reset assembly is provided between the lower quick-release adapter and the slider; the elastic reset assembly includes a first constant-force spring rod, a second constant-force spring rod, a first force transmission extension rod, a second force transmission extension rod, a first spring rod support seat, a second spring rod support seat and a spring rod adapter plate; the first spring rod support seat is vertically fixed on the lower quick-release adapter; the first constant-force spring rod is horizontally fixed on the top of the first spring rod support seat; the second spring rod support seat is vertically fixed on the lower quick-release adapter, and the second spring rod support seat and the first spring rod support seat are located on both sides of the upper quick-release adapter; the second constant-force spring rod is horizontally fixed on the top of the second spring rod support seat; the spring rod adapter plate is fixedly installed on the steel cable adapter; the first force transmission extension rod is fixedly connected between the first constant-force spring rod and the spring rod adapter plate; the second force transmission extension rod is fixedly connected between the second constant-force spring rod and the spring rod adapter plate.

[0012] The first constant force spring rod, the second constant force spring rod, the first force transmission extension rod and the second force transmission extension rod are distributed parallel to the slide rail.

[0013] The rear end of the connecting rod is connected to an adapter through a first fisheye bearing, and the adapter is screwed and fixed on the steel cable adapter seat; the front end of the connecting rod is connected to the swing arm of the engine throttle lever through a second fisheye bearing.

[0014] Beneficial effects of the present invention:

[0015] The cable-type throttle lever control connection mechanism for aircraft engine testing of the present invention can meet the requirement that the push-pull force of the engine throttle lever is greater than 500N, can meet the requirement that the positioning accuracy of the throttle lever does not exceed 0.1 degrees under the condition of variable installation angles, and can meet the rapid push-pull requirement of 0.6 seconds when the throttle lever is pushed from the slow position to the maximum position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a cable-type throttle lever control connection mechanism for aircraft engine testing according to the present invention;

[0017] In the figure, 1 is a steel cable, 2 is a connecting rod, 3 is a lower support plate, 4 is an upper support plate, 5 is a first support bolt assembly, 6 is a second support bolt assembly, 7 is a third support bolt assembly, 8 is a lower quick-release adapter, 9 is an upper quick-release adapter, 10 is a first quick-release ring pin, 11 is a first quick-release ring pin, 12 is a slide rail, 13 is a slider, 14 is a steel cable adapter, 15 is a first constant force spring rod, 16 is a second constant force spring rod, 17 is a first force transmission extension rod, 18 is a second force transmission extension rod, 19 is a first spring rod support seat, 20 is a second spring rod support seat, 21 is a spring rod adapter plate, 22 is an adapter, and 23 is a second fisheye bearing. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 As shown, a cable-type throttle lever control connection mechanism for aircraft engine testing adopts a left-right mirror-symmetrical structure as a whole, including a support and attitude adjustment unit, a quick-install adapter unit, a friction-reducing and sliding unit, a cable 1 and a connecting rod 2; the quick-install adapter unit is arranged on the support and attitude adjustment unit; the friction-reducing and sliding unit is arranged on the quick-install adapter unit; one end of the cable 1 is connected to the quick-install adapter unit, and the other end of the cable 1 is connected to the friction-reducing and sliding unit; one end of the connecting rod 2 is connected to the friction-reducing and sliding unit, and the other end of the connecting rod 2 is connected to the engine throttle lever.

[0020] The support and posture adjustment unit includes a lower support plate 3, an upper support plate 4, a first support bolt assembly 5, a second support bolt assembly 6 and a third support bolt assembly 7; the lower support plate 3 and the upper support plate 4 are arranged in parallel, and the upper support plate 4 is located directly above the lower support plate 3; the first support bolt assembly 5, the second support bolt assembly 6 and the third support bolt assembly 7 are vertically installed between the lower support plate 3 and the upper support plate 4 and are distributed in a triangular shape; the lower ends of the screws of the first support bolt assembly 5 and the second support bolt assembly 6 are directly screwed and fixed to the lower support plate 3 through threaded holes, and the upper ends of the screws of the first support bolt assembly 5 and the second support bolt assembly 6 are connected to the upper support plate 4 through long holes; the upper end of the screw of the third support bolt assembly 7 is directly screwed and fixed to the upper support plate 4 through threaded holes, and the lower end of the screw of the third support bolt assembly 7 is connected to the lower support plate 3 through long holes.

[0021] The elongated holes on the lower support plate 3 and the elongated holes on the upper support plate 4 have the same size and are distributed in parallel.

[0022] The quick-release adapter unit includes a lower quick-release adapter seat 8, an upper quick-release adapter seat 9, a first quick-release ring first pin 10 and a second quick-release ring first pin 11; the lower quick-release adapter seat 8 is fixedly installed above the upper support plate 4; the upper quick-release adapter seat 9 is arranged above the lower quick-release adapter seat 8, one end of the lower quick-release adapter seat 8 is fixedly connected to the upper quick-release adapter seat 9 through the first quick-release ring first pin 10, and the other end of the lower quick-release adapter seat 8 is fixedly connected to the upper quick-release adapter seat 9 through the second quick-release ring first pin 11.

[0023] The first quick-release ring first pin 10 and the second quick-release ring first pin 11 face in opposite directions and are distributed in parallel.

[0024] The friction-reducing sliding unit includes a slide rail 12, a slider 13 and a steel cable adapter 14; the slide rail 12 is horizontally fixedly installed above the upper quick-install adapter 9; the slider 13 is slidably connected to the slide rail 12; the steel cable adapter 14 is fixedly installed on the slider 13; one end of the steel cable 1 is screwed and fixed to the steel cable adapter 14, and the other end of the steel cable 1 is screwed and fixed to the upper quick-install adapter 9, and the steel cable 1 is distributed parallel to the slide rail 12.

[0025] An elastic reset assembly is provided between the lower quick-release adapter 8 and the slider 13; the elastic reset assembly includes a first constant-force spring rod 15, a second constant-force spring rod 16, a first force transmission extension rod 17, a second force transmission extension rod 18, a first spring rod support seat 19, a second spring rod support seat 20 and a spring rod adapter plate 21; the first spring rod support seat 19 is vertically fixed on the lower quick-release adapter 8; the first constant-force spring rod 15 is horizontally fixed on the top of the first spring rod support seat 19; the second spring rod support seat 20 is fixed on the top of the first spring rod support seat 19; the second spring rod support seat 20 is fixed on the top of the first spring rod support seat 19; the second spring rod support seat 20 is fixed on the top of the first spring rod support seat 19; the first spring rod support seat 19 is fixed on the top of the second spring rod support seat 20. It is vertically fixed on the lower quick-release adapter seat 8, and the second spring rod support seat 20 and the first spring rod support seat 19 are located on both sides of the upper quick-release adapter seat 9; the second constant-force spring rod 16 is horizontally fixed on the top of the second spring rod support seat 20; the spring rod adapter plate 21 is fixedly installed on the steel cable adapter seat 14; the first force transmission extension rod 17 is fixedly connected between the first constant-force spring rod 15 and the spring rod adapter plate 21; the second force transmission extension rod 18 is fixedly connected between the second constant-force spring rod 16 and the spring rod adapter plate 21.

[0026] The first constant force spring rod 15 , the second constant force spring rod 16 , the first force transmission extension rod 17 and the second force transmission extension rod 18 are distributed parallel to the slide rail 12 .

[0027] The rear end of the connecting rod 2 is connected to an adapter 22 via a first fisheye bearing, and the adapter 22 is screwed and fixed on the cable adapter seat 14; the front end of the connecting rod 2 is connected to the swing arm of the engine throttle lever via a second fisheye bearing 23.

[0028] The following describes an installation process of the present invention in conjunction with the accompanying drawings:

[0029] First, pre-weld the lower support plate 3 to the pre-prepared gantry bracket, and the gantry bracket serves as the fixed foundation of the entire mechanism. Then, install the first support bolt assembly 5, the second support bolt assembly 6 and the third support bolt assembly 7 on the lower support plate 3 in sequence, and then install the upper support plate 4 to the first support bolt assembly 5, the second support bolt assembly 6 and the third support bolt assembly 7. Then, fine-tune the left and right installation positions of the upper support plate 4 through the long holes on the support plate until it is adjusted to the appropriate position. Then, fine-tune the height position of the upper support plate 4 through three sets of support bolt assemblies until it is adjusted to the appropriate height. Lock the three sets of support bolt assemblies, and the installation of the support posture adjustment unit is completed. At this time, it can be ensured that when the connecting rod 2 is installed later, the connecting rod 2 and the swing arm of the engine throttle lever are in the same plane, and it can be ensured that the slider 13 will not contact other parts of the engine when moving along the slide rail 12.

[0030] After the support and posture adjustment unit is installed, the lower quick-install adapter 8 is first fixed to the upper support plate 4. The upper quick-install adapter 9 is then placed into the lower quick-install adapter 8, so that the connecting pin holes on the upper quick-install adapter 9 and the lower quick-install adapter 8 are precisely aligned. The first quick-install ring first pin 10 and the second quick-install ring first pin 11 are then distributed and inserted into the connecting pin holes. The first quick-install ring first pin 10 and the second quick-install ring first pin 11 achieve rapid installation of the lower quick-install adapter 8 and the upper quick-install adapter 9 through the first quick-install ring first pin 10 and the second quick-install ring first pin 11. At this point, the quick-install adapter unit installation is complete. In addition, the anti-friction slip unit has been pre-installed on the upper quick-install adapter 9.

[0031] After the quick-release adapter unit is installed, install the steel cable 1. First, screw the rear end of the steel cable 1 to the upper quick-release adapter seat 9, but do not lock the rear end of the steel cable 1. Then screw the front end of the steel cable 1 to the steel cable adapter seat 14. Then, lock the front end of the steel cable 1 first, and then lock the rear end of the steel cable 1. At this time, the installation of the steel cable 1 is completed.

[0032] After the installation of the steel cable 1 is completed, the connecting rod 2 is installed. First, the adapter 22 is screwed to the steel cable adapter seat 14, and then the rear end of the connecting rod 2 is connected to the adapter 22 through the first fisheye bearing. Then, the front end of the connecting rod 2 is connected to the swing arm of the engine throttle lever through the second fisheye bearing 23.

[0033] After the connecting rod 2 is connected, the rotation angle of the adapter 22 is fine-tuned, and then the spatial posture of the connecting rod 2 is fine-tuned until the connecting rod 2 and the swing arm of the engine throttle lever are more accurately in the same plane, so as to ensure that the connecting rod 2 and the swing arm of the engine throttle lever can swing smoothly and avoid mechanical jamming.

[0034] After the above installation work is completed, manual debugging is carried out. Specifically, the slider 13 is manually controlled to move along the slide rail 12 to determine whether the swing angle of the engine throttle lever can meet all angle ranges, and to determine whether the process of manually pushing and pulling the drive slider 13 is smooth during the change of the swing angle of the engine throttle lever from 0 degrees to the maximum angle. When the debugging results are all qualified, the debugging is completed.

[0035] After the manual debugging is completed, the swing angle of the engine throttle lever is manually adjusted to the 0 degree position, and then the steel cable 1 is tightened and connected to the actuator of the throttle lever control system. During the subsequent engine test, the actuator of the throttle lever control system pulls the steel cable 1 to control the engine throttle lever. When the tension on the steel cable 1 is released, the reset of the steel cable 1 and the engine throttle lever is achieved by the elastic thrust of the first constant force spring rod 15 and the second constant force spring rod 16 pushing the slider 13.

[0036] The solutions in the embodiments are not intended to limit the scope of protection of the present invention. All equivalent implementations or modifications that do not depart from the scope of protection of the present invention are included in the scope of protection of the present invention.

Claims

1. A cable-type throttle lever control connection mechanism for aircraft engine testing, characterized by: The whole adopts a left-right mirror-symmetrical structure, including a support and posture adjustment unit, a quick-install adapter unit, a friction-reducing and sliding unit, a steel cable and a connecting rod; the quick-install adapter unit is arranged on the support and posture adjustment unit; the friction-reducing and sliding unit is arranged on the quick-install adapter unit; one end of the steel cable is connected to the quick-install adapter unit, and the other end of the steel cable is connected to the friction-reducing and sliding unit; one end of the connecting rod is connected to the friction-reducing and sliding unit, and the other end of the connecting rod is connected to the engine throttle lever; The support and posture adjustment unit includes a lower support plate, an upper support plate, a first support bolt assembly, a second support bolt assembly and a third support bolt assembly; the lower support plate and the upper support plate are arranged in parallel, and the upper support plate is located directly above the lower support plate; the first support bolt assembly, the second support bolt assembly and the third support bolt assembly are vertically installed between the lower support plate and the upper support plate and are distributed in a triangular shape; the lower ends of the screws of the first support bolt assembly and the second support bolt assembly are directly screwed and fixed to the lower support plate through threaded holes, and the upper ends of the screws of the first support bolt assembly and the second support bolt assembly are connected to the upper support plate through long holes; the upper end of the screw of the third support bolt assembly is directly screwed and fixed to the upper support plate through threaded holes, and the lower end of the screw of the third support bolt assembly is connected to the lower support plate through the long hole; The quick-release adapter unit includes a lower quick-release adapter seat, an upper quick-release adapter seat, a first quick-release ring first pin and a second quick-release ring first pin; the lower quick-release adapter seat is fixedly installed above the upper support plate; the upper quick-release adapter seat is arranged above the lower quick-release adapter seat, one end of the lower quick-release adapter seat is fixedly connected to the upper quick-release adapter seat through the first quick-release ring first pin, and the other end of the lower quick-release adapter seat is fixedly connected to the upper quick-release adapter seat through the second quick-release ring first pin.

2. The cable-type throttle lever control connection mechanism for aircraft engine testing according to claim 1, characterized in that: The elongated holes on the lower support plate and the elongated holes on the upper support plate have the same size and are distributed in parallel.

3. The cable-type throttle lever control connection mechanism for aircraft engine testing according to claim 1, characterized in that: The first pin of the first quick-release ring and the first pin of the second quick-release ring are oriented in opposite directions and are distributed in parallel.

4. The cable-type throttle lever control connection mechanism for aircraft engine testing according to claim 1, characterized in that: The friction-reducing sliding unit includes a slide rail, a slider and a steel cable adapter; the slide rail is horizontally fixedly installed above the upper quick-release adapter; the slider is slidably connected to the slide rail; the steel cable adapter is fixedly installed on the slider; one end of the steel cable is screwed and fixed to the steel cable adapter, and the other end of the steel cable is screwed and fixed to the upper quick-release adapter, and the steel cable is distributed parallel to the slide rail.

5. The cable-type throttle lever control connection mechanism for aircraft engine testing according to claim 4, characterized in that: An elastic reset assembly is provided between the lower quick-release adapter and the slider; the elastic reset assembly includes a first constant-force spring rod, a second constant-force spring rod, a first force transmission extension rod, a second force transmission extension rod, a first spring rod support seat, a second spring rod support seat and a spring rod adapter plate; the first spring rod support seat is vertically fixed on the lower quick-release adapter; the first constant-force spring rod is horizontally fixed on the top of the first spring rod support seat; the second spring rod support seat is vertically fixed on the lower quick-release adapter, and the second spring rod support seat and the first spring rod support seat are located on both sides of the upper quick-release adapter; the second constant-force spring rod is horizontally fixed on the top of the second spring rod support seat; the spring rod adapter plate is fixedly installed on the steel cable adapter; the first force transmission extension rod is fixedly connected between the first constant-force spring rod and the spring rod adapter plate; the second force transmission extension rod is fixedly connected between the second constant-force spring rod and the spring rod adapter plate.

6. The cable-type throttle lever control connection mechanism for aircraft engine testing according to claim 5, characterized in that: The first constant force spring rod, the second constant force spring rod, the first force transmission extension rod and the second force transmission extension rod are distributed parallel to the slide rail.

7. The cable-type throttle lever control connection mechanism for aircraft engine testing according to claim 4, characterized in that: The rear end of the connecting rod is connected to an adapter through a first fisheye bearing, and the adapter is screwed and fixed on the steel cable adapter seat; the front end of the connecting rod is connected to the swing arm of the engine throttle lever through a second fisheye bearing.

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