Engine throttle control lever locking mechanism and engine control system

Abstract

The invention provides an engine throttle operating lever locking mechanism which is characterized in that friction plates are arranged on two sides of each pulley, the right side of each pulley is fixedly connected with a throttle operating lever, and a brake lever is mounted on a shaft and positioned on the left side of the throttle operating lever on the outermost side; the stop pin is mounted on the lower side of the bracket; two locking pieces are arranged at the lower end of the brake rod and coaxially installed on the shaft, the two locking pieces are provided with clamping parts matched with each other, the outer locking piece is fixedly connected with the brake rod, the inner locking piece makes contact with the pulley on the leftmost side, the inner locking piece can move in the axial direction of the shaft, and the inner locking piece is provided with a plug pin notch structure matched with the stop pin. The stop pin limits the radial rotation of the inner side locking sheet; when the brake rod rotates forwards around the shaft, the outer side locking piece rotates, the inner side locking piece moves rightwards in the axial direction of the shaft, the pulley and the friction plate are extruded, the friction force between the pulley and the friction plate is increased, the accelerator control rod cannot rotate under the action of external force and enters a brake state, and the accelerator control rod is simple in structure and good in reliability and maintainability.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft engine control systems, and in particular relates to an engine throttle control lever locking mechanism and an engine control system. Background Art

[0002] When the aircraft is flying in a fixed state such as cruising, the throttle lever should be firmly fixed at the required throttle angle position. The throttle lever locking mechanism is to ensure that the throttle lever can be firmly fixed at any position within its range of motion when the engine throttle console is in a locked and braked state.

[0003] In the prior art, the throttle lever locking mechanism of a multi-engine aircraft engine has a complex structure and poor maintainability. Therefore, it is necessary to provide a simple and reliable engine throttle lever locking mechanism. Summary of the invention

[0004] In order to solve the technical problems of the complicated structure and poor maintainability of the engine throttle lever locking mechanism in the related art, the present invention provides an engine throttle lever locking mechanism, which has a simple structure and good maintainability. The technical solution is as follows:

[0005] In a first aspect, an engine throttle lever locking mechanism is provided, comprising: a bracket 1, a brake lever 2, n throttle levers 3, n pulleys 5, a bushing 6, a stop pin 8, and a shaft 10.

[0006] A shaft 10 is provided on the bracket 1, and m bushings 6 are sleeved on the outer side of the shaft 10, and n pulleys 5 are coaxially installed on the shaft 10 with the bushings 6. Friction plates 7 are provided on both sides of each pulley 5. A throttle lever 3 is fixedly connected to the right side of each pulley 5. The m bushings 6 are used to space the n throttle levers 3. The brake lever 2 is installed on the shaft 10 and is located on the left side of the outermost throttle lever 3. The brake lever 2 is coaxial with the pulley 5, and n is equal to 2, 4, 6, and m=n-1;

[0007] The stop pin 8 is installed on the lower side of the bracket 1; two locking plates 4 are provided at the lower end of the brake rod 2, and the two locking plates 4 are coaxially installed on the shaft 10, and the two locking plates 4 are provided with mutually matching clamping parts, the outer locking plate is fixedly connected to the brake rod 2, and the inner locking plate is in contact with the leftmost pulley 5, and the inner locking plate can move along the axial direction of the shaft 10, and the inner locking plate is provided with a latch notch structure that cooperates with the stop pin 8, and the stop pin 8 is used to limit the radial rotation of the inner locking plate;

[0008] When the brake lever 2 rotates forward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft 10, squeezing the pulley 5 and the friction plate 7. The friction between the pulley 5 and the friction plate 7 increases, so that the throttle lever 3 cannot rotate when subjected to external force, enters a braking state, and achieves the purpose of locking.

[0009] Optionally, the two locking plates 4 are provided with tooth structures that cooperate with each other and are in the form of inclined projections. When the brake lever 2 rotates forward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft 10 under the action of the tooth structures.

[0010] Optionally,

[0011] When the brake lever 2 rotates backward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the left along the shaft 10. The friction between the pulley 5 and the friction plate 7 is reduced, so that the throttle lever 3 can rotate when subjected to external force, and the braking state is released.

[0012] Optionally, the locking plate 4 , the pulley 5 , the friction plate 7 , and the bushing 6 are installed on the shaft 10 by applying a pre-tightening force by the locking nut 9 .

[0013] Optionally, the throttle lever 3 is fixed to the pulley 5 by riveting.

[0014] Optionally, the outer locking plate is fixed to the brake rod 2 by riveting.

[0015] Optionally, a handle ball is provided at one end of the throttle lever 3 away from the pulley 5 to facilitate operation by personnel.

[0016] Optionally, the bushing 6 is a metal bushing.

[0017] In a second aspect, an engine control system is provided, comprising the engine throttle lever locking mechanism as described in any one of the first aspects.

[0018] The beneficial effects of the present invention are at least:

[0019] The engine throttle lever locking mechanism comprises: a bracket 1, a brake lever 2, n throttle levers 3, n pulleys 5, a bushing 6, a stop pin 8, and a shaft 10.

[0020] A shaft 10 is provided on the bracket 1, and m bushings 6 are sleeved on the outer side of the shaft 10, and n pulleys 5 are coaxially installed on the shaft 10 with the bushings 6. Friction plates 7 are provided on both sides of each pulley 5. A throttle lever 3 is fixedly connected to the right side of each pulley 5. The m bushings 6 are used to space the n throttle levers 3. The brake lever 2 is installed on the shaft 10 and is located on the left side of the outermost throttle lever 3. The brake lever 2 is coaxial with the pulley 5, and n is equal to 2, 4, 6, and m=n-1;

[0021] The stop pin 8 is installed on the lower side of the bracket 1; two locking plates 4 are provided at the lower end of the brake rod 2, and the two locking plates 4 are coaxially installed on the shaft 10, and the two locking plates 4 are provided with mutually matching clamping parts, the outer locking plate is fixedly connected to the brake rod 2, and the inner locking plate is in contact with the leftmost pulley 5, and the inner locking plate can move along the axial direction of the shaft 10, and the inner locking plate is provided with a latch notch structure that cooperates with the stop pin 8, and the stop pin 8 is used to limit the radial rotation of the inner locking plate;

[0022] When the brake lever 2 rotates forward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft 10, squeezing the pulley 5 and the friction plate 7. The friction between the pulley 5 and the friction plate 7 increases, so that the throttle lever 3 cannot rotate when subjected to external force, enters the braking state, and achieves the purpose of locking.

[0023] Simple structure, good reliability and maintainability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of an engine throttle lever locking mechanism provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the locking piece structure provided in an embodiment of the present invention.

[0026] Among them: 1- bracket, 2- brake lever, 3- throttle lever assembly, 4- locking plate, 5- pulley, 6- bushing, 7- friction plate, 8- stop pin, 9- locking nut, 10- shaft. DETAILED DESCRIPTION

[0027] The present application is further described in detail below through specific implementation methods and drawings.

[0028] Example 1

[0029] See also Figure 1 The embodiment of the present invention provides an engine throttle lever locking mechanism, comprising: a bracket 1, a brake lever 2, n throttle levers 3, n pulleys 5, a bushing 6, a stop pin 8, and a shaft 10.

[0030] A shaft 10 is provided on the bracket 1, and m bushings 6 are sleeved on the outer side of the shaft 10, and n pulleys 5 are coaxially installed on the shaft 10 with the bushings 6. Friction plates 7 are provided on both sides of each pulley 5. A throttle lever 3 is fixedly connected to the right side of each pulley 5. The m bushings 6 are used to space the n throttle levers 3. The brake lever 2 is installed on the shaft 10 and is located on the left side of the outermost throttle lever 3. The brake lever 2 is coaxial with the pulley 5, and n is equal to 2, 4, 6, and m=n-1;

[0031] The stop pin 8 is installed on the lower side of the bracket 1; two locking plates 4 are provided at the lower end of the brake rod 2, and the two locking plates 4 are coaxially installed on the shaft 10, and the two locking plates 4 are provided with mutually matching clamping parts, the outer locking plate is fixedly connected to the brake rod 2, and the inner locking plate is in contact with the leftmost pulley 5, and the inner locking plate can move along the axial direction of the shaft 10, and the inner locking plate is provided with a latch notch structure that cooperates with the stop pin 8, and the stop pin 8 is used to limit the radial rotation of the inner locking plate;

[0032] When the brake lever 2 rotates forward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft 10, squeezing the pulley 5 and the friction plate 7. The friction between the pulley 5 and the friction plate 7 increases, so that the throttle lever 3 cannot rotate when subjected to external force, enters a braking state, and achieves the purpose of locking.

[0033] In the embodiment of the present invention, friction plates are alternately installed between the pulleys 5 to provide sufficient friction in the moving direction of the throttle lever.

[0034] Example 2

[0035] See also Figure 1 The embodiment of the present invention provides an engine throttle lever locking mechanism, comprising: a bracket 1, a brake lever 2, four throttle levers 3, four pulleys 5, a bushing 6, a stop pin 8, and a shaft 10.

[0036] A shaft 10 is provided on the bracket 1, and three bushings 6 are sleeved on the outer side of the shaft 10. n pulleys 5 are coaxially installed on the shaft 10 with the bushings 6. Friction plates 7 are provided on both sides of each pulley 5. A throttle lever 3 is fixedly connected to the right side of each pulley 5. The three bushings 6 are used to space the four throttle levers 3. The brake lever 2 is installed on the shaft 10 and is located on the left side of the outermost throttle lever 3. The brake lever 2 is coaxial with the pulley 5.

[0037] The stop pin 8 is installed on the lower side of the bracket 1; two locking plates 4 are provided at the lower end of the brake rod 2, and the two locking plates 4 are coaxially installed on the shaft 10, and the two locking plates 4 are provided with mutually matching clamping parts, the outer locking plate is fixedly connected to the brake rod 2, and the inner locking plate is in contact with the leftmost pulley 5, and the inner locking plate can move along the axial direction of the shaft 10, and the inner locking plate is provided with a latch notch structure that cooperates with the stop pin 8, and the stop pin 8 is used to limit the radial rotation of the inner locking plate;

[0038] When the brake lever 2 rotates forward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft 10, squeezing the pulley 5 and the friction plate 7. The friction between the pulley 5 and the friction plate 7 increases, so that the throttle lever 3 cannot rotate when subjected to external force, enters a braking state, and achieves the purpose of locking.

[0039] The locking plate 4, the pulley 5, the friction plate 7, and the bushing 6 are installed on the shaft 10 by applying a pre-tightening force by the locking nut 9. The operating force of the throttle control lever 3 can be adjusted by rotating the locking nut 9.

[0040] The throttle lever 3 is fixed to the pulley 5 by riveting.

[0041] The outer locking plate is fixed to the brake rod 2 by riveting.

[0042] A handle ball is provided at one end of the throttle lever 3 away from the pulley 5 to facilitate operation by personnel.

[0043] The bushing 6 is a metal bushing.

[0044] See also Figure 2 The two locking plates 4 are provided with tooth structures that cooperate with each other and are in the form of inclined projections. When the brake lever 2 rotates forward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft 10 under the action of the tooth structures.

[0045] When the brake lever 2 rotates backward around the shaft 10, the outer locking plate rotates, and the inner locking plate moves axially to the left along the shaft 10. The friction between the pulley 5 and the friction plate 7 is reduced, so that the throttle lever 3 can rotate when subjected to external force, and the braking state is released.

[0046] An embodiment of the present invention further provides an engine control system, including the engine throttle control lever locking mechanism provided by the embodiment of the present invention.

[0047] The above only expresses the implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. In addition, the parts that are not detailed in this application are all conventional technologies.

Claims

1. An engine throttle lever locking mechanism, characterized in that: include: A bracket (1), a brake lever (2), n throttle levers (3), n pulleys (5), a bushing (6), a stop pin (8), and a shaft (10). A shaft (10) is arranged on the bracket (1), and m bushings (6) are sleeved on the outer side of the shaft (10). n pulleys (5) are coaxially mounted on the shaft (10) with the bushings (6), and friction plates (7) are arranged on both sides of each pulley (5). A throttle lever (3) is fixedly connected to the right side of each pulley (5), and the m bushings (6) are used to space the n throttle levers (3). A brake lever (2) is mounted on the shaft (10) and is located on the left side of the outermost throttle lever (3). The brake lever (2) is coaxial with the pulley (5), and n is equal to 2, 4, or 6, and m=n-1. The stop pin (8) is installed on the lower side of the bracket (1); two locking plates (4) are provided at the lower end of the brake rod (2), and the two locking plates (4) are coaxially installed on the shaft (10), and the two locking plates (4) are provided with mutually matching clamping parts, the outer locking plate is fixedly connected to the brake rod (2), and the inner locking plate is in contact with the leftmost pulley (5), and the inner locking plate can move axially along the shaft (10), and the inner locking plate is provided with a latch notch structure that cooperates with the stop pin (8), and the stop pin (8) is used to limit the radial rotation of the inner locking plate; When the brake lever (2) rotates forward around the shaft (10), the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft (10), squeezing the pulley (5) and the friction plate (7). The friction between the pulley (5) and the friction plate (7) increases, so that the throttle lever (3) cannot rotate when subjected to external force, enters a braking state, and achieves the purpose of locking.

2. The engine throttle lever locking mechanism according to claim 1, characterized in that: The two locking plates (4) are provided with tooth-like structures that are mutually matched and are in the form of inclined projections. When the brake rod (2) rotates forward around the shaft (10), the outer locking plate rotates, and the inner locking plate moves axially to the right along the shaft (10) under the action of the tooth-like structures.

3. The engine throttle lever locking mechanism according to claim 1, characterized in that: When the brake lever (2) rotates backward around the shaft (10), the outer locking plate rotates, and the inner locking plate moves axially to the left along the shaft (10), and the friction between the pulley (5) and the friction plate (7) is reduced, so that the throttle lever (3) can rotate when subjected to external force, and the braking state is released.

4. The engine throttle lever locking mechanism according to claim 1, characterized in that: The locking plate (4), the pulley (5), the friction plate (7) and the bushing (6) are installed on the shaft (10) by applying a pre-tightening force by the locking nut (9).

5. The engine throttle lever locking mechanism according to claim 1, characterized in that: The throttle control lever (3) is fixed to the pulley (5) by riveting.

6. The engine throttle lever locking mechanism according to claim 1, characterized in that: The outer locking plate is fixed to the brake rod (2) by riveting.

7. The engine throttle lever locking mechanism according to claim 1, characterized in that: A handle ball is arranged at one end of the throttle lever (3) away from the pulley (5).

8. The engine throttle lever locking mechanism according to claim 1, characterized in that: The bushing (6) is a metal bushing.

9. An engine control system, characterized in that: It comprises the engine throttle lever locking mechanism as described in any one of claims 1 to 8.

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