Disc type steering column based on soft transmission

Abstract

The utility model discloses a disc type steering column based on soft transmission. The disc type steering column comprises a steering wheel, a steel cable, a column body and a control rocker arm. The bottom of the steering wheel is connected with an adapter which is in spline connection with a drum wheel, the drum wheel is connected with the top of a rod body through a bearing, the bottom of the rod body is connected with a control rocker arm, and the control rocker arm is hinged to an elevator control pull rod. Decoupling pulleys are symmetrically arranged on the two sides of the rod body, and the top ends of the two steel cables are fixed to the drum wheel and wound around the decoupling pulleys to be connected with the aileron control line system. The occupied space of a cockpit is reduced, the man-machine interaction effect is good, and steel cable maintenance operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of flight control system, and relates to a disc type control column based on soft transmission. BACKGROUND

[0002] The hand control device belongs to a central control mechanism and is used for controlling the elevator and aileron of an airplane. The elevator and aileron control is required to have "independence" in structure, that is, when the elevator is controlled alone, the aileron will not be deflected; and when the aileron is controlled alone, the elevator should not be deflected. The disc type control column of a traditional large and medium-sized transport aircraft is provided with a chain wheel, a steel cable and a plurality of groups of pulleys in the column body, the steel cable is changed in direction through the pulleys, and the aileron control cable is passed through the elevator control shaft to realize independent control. However, the design has the following disadvantages: the column body structure is complex and the outer shape is large, the space of the cockpit is large, the human-machine interaction effect is seriously affected, and the steel cable arranged in the column body makes the maintenance operation difficult. CONTENT

[0003] The utility model aims at overcoming the defects of the prior art, providing a disc type control column based on soft transmission, reducing the space of the cockpit, having a good human-machine interaction effect and facilitating the maintenance operation of the steel cable.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A disc type control column based on soft transmission, comprising a control disc, a steel cable, a column body and a control rocker arm.

[0006] The control disc is connected with an adapter at the bottom, the adapter is connected with a drum wheel through a spline, the drum wheel is connected with the top of the column body through a bearing, the bottom of the column body is connected with the control rocker arm, and the control rocker arm is hingedly connected with an elevator control pull rod.

[0007] The column body is symmetrically provided with a decoupling pulley at both sides, and the two steel cables are fixed to the drum wheel at the top and connected with the aileron control cable through the decoupling pulley.

[0008] Preferably, the column body is in the shape of an I-beam.

[0009] Preferably, the two steel cables are located in the left and right grooves of the column body, and the column body is connected with left and right shells at both sides.

[0010] Preferably, the control rocker arm is provided with a cavity at the left and right sides, and the cavity is provided with a counterweight.

[0011] Preferably, the control rocker arm is provided with a protruding shaft end at the left and right sides, respectively, the two protruding shaft ends are rotatably connected with left and right mounting supports through rolling bearings, and the left and right mounting supports are fixedly connected with the machine body through lateral flanges.

[0012] Preferably, the control rocker arm is provided with an ear fork at one end and a second ear fork at the other end.

[0013] Preferably, the drum wheel and the decoupling pulley are provided with anti-drop pieces and anti-drop pins.

[0014] Preferably, the top of the rod body is provided with a bearing seat, and the bearing seat is provided with rolling bearings at the front and back thereof and connected with the drum wheel.

[0015] Preferably, the bottom end of the steel cable is provided with a tensioning screw sleeve.

[0016] Preferably, the drum wheel is a single-groove pulley, and the steel cable is fixed to the surface of the drum wheel through a spherical joint.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses a symmetrical arrangement decoupling pulley, and the effective radius passes through the rotation center of the driving rod, and only needs two sides symmetrical steel cable to directly realize the independent control of elevator and aileron, does not need the complex pulley group in the rod in traditional layout, reduces the space occupied in the cockpit, and the man-machine interaction effect is good, and the steel cable maintenance operation is convenient.

[0019] The rod body section adopts an I-shaped type, compared with the thick column structure of the traditional driving rod, the I-shaped section significantly reduces the thickness of the rod body while ensuring the bending strength, and saves the longitudinal space.

[0020] The driving rod is designed with left and right sheaths, and the steel cable and the cable wire pass through between the rod body and the left and right sheaths of the driving rod, so that only the left and right sheaths need to be disassembled when the steel cable is checked and replaced, and the maintenance is convenient. The design of the left and right sheaths can effectively prevent foreign matters from entering and improve the system reliability.

[0021] The left and right mounting supports of the driving rod are integrated LRU, and the left and right mounting supports are connected and fixed with the machine body through lateral flanges. The mounting can be directly from the cockpit floor from top to bottom, and finally connected through bolts, which greatly improves the on-machine mounting efficiency and maintainability. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the front view of the disc type driving rod of the utility model;

[0023] Figure 2 It is the shaft side view of the disc type driving rod of the utility model.

[0024] 1 - driving disc, 2 - adapter, 3 - drum wheel, 4 - rolling bearing, 5 - bearing seat, 6 - steel cable, 7 - rod body, 8 - decoupling pulley, 9 - control rocker arm, 10 - left and right sheaths, 11 - top cover, 12 - counterweight, 13 - cover plate, 14 - vibration rod device, 15 - neutral pin, 16 - steel cable anti-drop piece, 17 - left and right mounting supports, 18 - tensioning screw sleeve, 9-a: convex shaft end, 9-b: pull rod hinged point, 9-c: cavity, 9-d: vibration rod device mounting interface. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terms “installation,” “connection,” and “linkage” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection, an electrical connection, or a connection that allows communication; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements or an interaction between two elements. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items. Those skilled in the art will understand the specific meaning of the above terms in this invention according to the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature therebetween. Moreover, the first feature "on", "above" and "on top of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0029] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0030] As Figure 1 and Figure 2 shown, a disc type driving rod based on soft transmission is described in the present application, which realizes aileron control by using a steel cable pulley, but the decoupling mode of the steel cable pulley is different from that of the traditional driving rod. It comprises a steering wheel 1, an adapter 2, a drum 3, a rolling bearing 4, a bearing seat 5, a steel cable 6, a rod body 7, a decoupling pulley 8, a control rocker arm 9, left and right protective shells 10, a top protective cover 11, a counterweight 12, a cover plate 13, a vibration rod device 14, a neutral pin 15, a steel cable anti-drop piece 16, left and right mounting brackets 17 and a loose nut 18.

[0031] The steering wheel 1 is arranged with a machine internal voice communication button, a horizontal stabilizer trim switch, an automatic pilot synchronization switch, an automatic pilot disconnect switch and the like. The bottom of the steering wheel 1 is connected with the adapter 2 flange through four M6 screws, and the adapter 2 is connected with the drum 3 through rectangular splines to transmit the torsional force generated when the steering wheel 1 is controlled. The adapter 2 and the drum 3 are fixed through the upper and lower clamps to realize the axial positioning when the driving rod is pushed and pulled. The bearing seat 5 is provided with two rolling bearings 4 connected with the drum 3 at the front and rear, which is used to provide rotary support for the steering wheel 1.

[0032] In order to enhance the bending resistance, the rod body 7 is in the shape of an I-beam, the upper part of the rod body 7 is fixedly connected with the bearing seat 5 through four cross steel rivets, the lower part of the rod body 7 is connected with the operating rocker arm 9 through two steel bolts in the X direction and four steel rivets in the Z direction, and the two parts are cross-connected.

[0033] The operating rocker arm 9 is provided with a convex shaft end 9-a on each of the left and right sides, which is the rotation center of the driving rod, and is installed and connected with the left and right mounting brackets 17 provided with rolling bearings in a clearance fit, the left and right mounting brackets 17 are fixed on the airplane, and the left and right mounting brackets 17 provide support for the rotation of the driving rod. The operating rocker arm 9 is designed with a first ear fork 9-b at one end, which is used to provide the hinged point of the elevator operating pull rod, and is designed with a second ear fork 9-d in the -X direction, which is used to provide the mounting interface of the vibration rocker. Due to the influence of the gravity of the driving rod itself, it is necessary to balance the unbalanced force. Therefore, the operating rocker arm 9 is designed with a cavity 9-c on each of the left and right sides, a lead weight 12 is installed in the cavity 9-c, and a cover plate 13 is further provided on the outside of the lead weight 12, and the cover plate 13, the lead weight 12 and the operating rocker arm 9 are fixedly connected through three bolts. Meanwhile, the vibration rocker 14 is arranged near the lead weight 12 to play a counterweight role, so that the driving rod can be balanced in the specified operating stroke range. The volume of the lead weight 12 is adjusted according to the unbalanced force requirement of the driving rod in different positions in the operating stroke range and the gravity center of the driving rod.

[0034] The driving rod body 7 is designed with one longitudinal and horizontal operating decoupling pulley 8 mounting point on each side, and two mounting points are provided with decoupling pulleys 8. In order to realize the decoupling function of the elevator and aileron operating, the effective radius of the decoupling pulley 8 must pass through the rotation center of the driving rod. The steel cable 6 is symmetrically arranged on both sides of the rod body 7, the upper part is wound around the drum 3 and fixed on the drum 3, and the lower part is wound around the decoupling pulley 8 and extended to the outside along the rotation center of the driving rod and connected with the aileron operating line system. The steel cable 6 is wrapped by the left and right shells 10, and the left and right shells 10 and the rod body 7 together form an overall structure with a circular cross section.

[0035] The rod body 7 is provided with mounting holes for the left and right shells 10, the top cover 11 and the cable fixing clamp. In order to improve the service life of the connecting threads of aluminum parts, steel wire bushings are installed in the mounting holes. The driving rod body 7 is connected with the left and right split shells 10 and the top dust cover 11 through a plurality of screws, which is convenient for quick installation and disassembly. When the steel cable 6 needs to be repaired or replaced, only the fixed screws need to be disassembled to remove the shell.

[0036] The top drum 3 of the driving rod is a single-groove pulley, and the fixing form of the steel cable 6 on the drum 3 is a ball joint. The drum 3 and the decoupling pulley 8 are respectively provided with anti-falling pieces 16 and anti-falling pins to prevent the steel cable 6 from falling off during movement. The tension adjustment of the steel cable 6 can be realized through a tension adjusting sleeve 18. In order to facilitate ground maintenance and installation, a center pin 15 is designed at the top of the driving rod and the left and right installation supports, the center pin hole of the left and right installation supports 17 is a waist-shaped hole, and the center pin hole of the operating rocker arm 9 is a circular hole, so as to be flexible to plug and unplug. The fitting size of the center pin 15 is Φ8M7 / h6.

[0037] The left and right installation supports 17 are arranged on both sides of the driving rod rotating shaft and are fixed by lateral flanges. Compared with the traditional driving rod and installation support which are divided into two independent LRUs and finally connected and installed on the aircraft, the driving rod of the application is installed from top to bottom on the cockpit floor as a separate LRU, and finally connected by bolts, which greatly improves the installation efficiency and maintainability on the aircraft. In addition, the driving rod is designed with a protective shell and a dust cover, which can effectively prevent foreign matter from entering and improve reliability; when the steel cable is checked or replaced, only the external protective shell needs to be removed, which greatly facilitates the maintenance operation.

[0038] LRU refers to a component, assembly or the like with independent function which can be directly replaced on the aircraft during route maintenance by using standard tools. These components usually do not include standard parts such as bolts, nuts and general components.

[0039] The vibration rod device 14 is integrated and installed on the driving rod, and when the aircraft approaches a stall state, a vibration rod warning signal is sent to the pilot to realize the stall protection function.

[0040] The driving rod is provided with a counterweight 12 to realize the balance function of the unbalanced force generated by the self-weight within the arbitrary operating stroke of the driving rod.

[0041] The convex shaft end 9-a on both sides of the driving rod operating rocker arm 9 rotates around the bearing on the left and right installation supports 17, one end of the operating rocker arm 9 is hingedly connected with the elevator control rod to realize the elevator control, and the steel cable 6 is fixed around the decoupling pulley 8 and extends to the outside aileron control system to realize the aileron control. Since the effective radius of the decoupling pulley 8 passes through the driving rod rotating center with the common tangent point of the steel cable, the elevator control and the aileron control are independent of each other and do not interfere with each other.

[0042] The above-mentioned sequence numbers of the embodiments of the application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0043] In the above-mentioned embodiments of the application, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0044] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0045] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0046] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

[0047] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this patent should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. A disc-type steering column based on soft drive, characterized in that, The utility model relates to a kind of aircraft control wheel, including steering wheel (1), cable (6), pole body (7) and control rocker (9); Steering wheel (1) bottom is connected with adapter (2), adapter (2) spline connection has drum wheel (3), drum wheel (3) is connected with pole body (7) top by bearing, pole body (7) bottom is connected with control rocker (9), control rocker (9) is articulated with elevator control pull rod; Pole body (7) both sides are symmetrically provided with decoupling pulley (8), two cables (6) top are fixed to drum wheel (3) and pass through decoupling pulley (8) and are connected with aileron control line system.

2. The soft drive based disc drive lever of claim 1, wherein, Pole body (7) section is I-shaped.

3. The soft drive based disc drive lever of claim 2, wherein, Two cables (6) are located in pole body (7) left and right recesses, and pole body (7) both sides are connected with left and right shell (10).

4. The soft drive based disc drive lever of claim 1, wherein, Control rocker (9) left and right sides are provided with cavity (9-c), and counterweight (12) is installed in cavity (9-c).

5. The soft drive based disc joystick according to claim 1, wherein, Control rocker (9) left and right sides each have one convex shaft end (9-a), and two convex shaft ends (9-a) are rotatably connected left and right mounting bracket (17) using rolling bearing, and left and right mounting bracket (17) are fixedly connected with machine body using lateral flange.

6. The soft drive based disc joystick according to claim 1, wherein, Control rocker (9) one end is provided with ear fork (9-b), and the other end is provided with second ear fork (9-d).

7. The soft drive based disc drive lever of claim 1, wherein, Drum wheel (3) and decoupling pulley (8) are both provided with anti-drop piece (16) and anti-drop pin.

8. The soft drive based disc drive lever of claim 1, wherein, Pole body (7) top is provided with bearing seat (5), and rolling bearing (4) is installed in bearing seat (5) front and back and connected with drum wheel (3).

9. The soft drive based disc drive lever of claim 1, wherein, Cable (6) bottom end is provided with tension nut (18).

10. The soft drive based disc joystick according to claim 1, wherein, Drum wheel (3) is single-groove pulley, and cable (6) is fixed to the surface of drum wheel (3) through spherical joint.

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