Helicopter main reducer supporting frame positioner

Abstract

The utility model provides a helicopter main reducer supporting frame positioner which comprises a support fixedly connected with a frame cross beam; one end of the guide column is connected with the support in a sliding manner; the positioning plate is connected with the other end of the guide column, and the positioning plate is used for positioning the helicopter main reducer supporting frame; according to the invention, man-machine interaction is fully considered, so that enough space is provided for an assembler to operate. The relative position precision of the front and rear bulkheads of the machine body and the main reduction supporting frame is guaranteed through the integrally-machined positioning plate precision holes, and the accuracy and convenience of overall positioning and opening are guaranteed through vertical movement of the guide columns.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of helicopter assembly process equipment, and particularly relates to a helicopter main reduction support frame mounting device. BACKGROUND

[0002] The positioning and mounting of the main reduction support frame on the top of the fuselage of a certain type of aircraft need to ensure the relative positions of the support joints of the front and rear frames on the basis of the original prototype aircraft, and the support frame test piece and the 3-frame test piece barrel nut hole and boss are used as positioning references to set the positioner to ensure the frame plane and joint hole position, so as to ensure the installation position of the main reducer on the aircraft. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a device for assembling the main reduction support frame test piece and the fuselage spacer frame test piece.

[0004] The application provides a helicopter main reduction support frame positioner, which comprises:

[0005] a support fixedly connected with a frame cross beam;

[0006] a guide column, one end of which is in sliding connection with the support;

[0007] a positioning plate connected with the other end of the guide column, the positioning plate being used for positioning the helicopter main reduction support frame.

[0008] Preferably, the support and the frame cross beam are connected through fine adjustment of the thickness of a gasket to ensure the theoretical installation position controlled in this direction.

[0009] The support and the frame cross beam are connected through screw and cylindrical pin combination.

[0010] Preferably, the support is a double fork ear structure, and the inside is provided with a cross-shaped groove, the dimensions of which are precisely machined.

[0011] Preferably, the guide column is cross-shaped in the column part, and the outer dimensions are precisely machined. The guide column is used as a connecting piece for controlling the up-down movement of the structure, and is connected with the support through small-gap movable cooperation. The theoretical position is fixed through a precision pin, and the free state is fixed through a suspension hole.

[0012] Preferably, the positioning plate is the main piece of the positioning part of the structure, and is provided with a stepped contact surface with the positioning end surface of the main reduction support frame, which can better ensure the dimensional position and smoothness of the positioning surface. Four precision holes corresponding to the boss on the main reduction support frame are formed on the positioning plate, which are used for ensuring the relative position of the main reduction front support frame and the fuselage spacer frame.

[0013] Preferably, the guide column has a suspended section, which can be used as an operating handle.

[0014] The beneficial technical effects of the present application are:

[0015] The present application fully considers human-computer interaction, so that there is sufficient space for the assembler to operate. The relative position accuracy of the front and rear bulkheads and the main reduction support frame is ensured through the precision holes of the integrally machined positioning plate, and the accuracy and convenience of overall positioning and opening are ensured through the up and down movement of the guide column. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural diagram of a helicopter main reduction support frame positioner provided by an embodiment of the present application Figure One ;

[0017] Figure 2 is a structural diagram of a helicopter main reduction support frame positioner provided by an embodiment of the present application Figure Two ;

[0018] Among them, 1 - support; 2 - positioning plate; 3 - guide column; 4 - gasket; 5 - tension pin; 6 - first fixed nut; 7 - second fixed nut; 8 - precision pin; 9 - screw; 10 - cylindrical pin; 11 - suspension hole; 12 - main reduction support frame; 13 - frame cross beam. DETAILED DESCRIPTION

[0019] The structure of the present application is used for the assembly of the main reduction support frame test piece and the fuselage bulkhead test piece.

[0020] Among them, the support is used to be fixed on the frame cross beam to ensure stability, and the position between the support and the frame cross beam is adjusted through the gasket, and the support and the frame cross beam are connected by screw and cylindrical pin combination.

[0021] Among them, the inside of the support is provided with a cross-shaped groove, the cross-shaped outer shape of the guide column is movably connected with the support with a small gap, the theoretical position is fixed by using the pin, and the free state is fixed by using the suspension hole. The guide column is provided with a hanging handle for convenient use. The positioning plate and the positioning end surface of the main reduction support frame adopt a stepped contact surface, and the positioning plate has four corresponding precision holes for ensuring the relative position of the main reduction front support frame and the fuselage bulkhead. The fuselage bulkhead is provided with a tension pin and a fixed nut for connecting and positioning on the front and rear sides, and the connection and fixation can ensure the assembly position requirement between the two connecting pieces.

[0022] The present application fully considers human-computer interaction, so that there is sufficient space for the assembler to operate. The relative position accuracy of the front and rear bulkheads and the main reduction support frame is ensured through the precision holes of the integrally machined positioning plate, and the accuracy and convenience of overall positioning and opening are ensured through the up and down movement of the guide column.

[0023] In other embodiments of the present application, please refer to Figure 1 and Figure 2, the support 1 is used for fixing the structure on the frame beam 13 to ensure stability, and the support 1 and the frame beam 15 are connected through the fine adjustment of the thickness of the gasket 4 to ensure the theoretical installation position controlled in this direction, and the support 1 and the frame beam are connected by the combination of the screw 9 and the cylindrical pin 10.

[0024] Wherein, the support 1 is a double fork ear structure, and the inside is provided with a cross-shaped groove, the dimensions of which are precisely machined to ensure that the guide column 3 connected with the support 1 is also cross-shaped, and the outer dimensions are precisely machined, the guide column 3 is used as a connecting piece for controlling the up-down movement of the structure, and is connected with the support 1 in a small gap movable connection, the theoretical position is fixed by using the precision plug 8, and the free state is fixed by using the hanging hole 11. The guide column 3 has a hanging section which can be used as an operating handle.

[0025] Wherein, the positioning plate 2 is the main part of the positioning part of the structure, and is connected with the positioning end face of the main reducer support frame 12 in a stepped contact surface, which can better ensure the size position and smoothness of the positioning face, four precision holes corresponding to the bosses on the main reducer support frame 12 are made on the positioning plate, which are used to ensure the relative position of the main reducer front support frame body partition frame (tolerance 0.05mm).

[0026] Wherein, there is a group of cylindrical nuts in front of and behind the body partition frame, the main reducer support frame 12 and the body partition frame are positioned by the barrel-shaped nut holes and bosses thereon, the front and rear sides are provided with the tension pin 5 and the first fixed nut 6 and the second fixed nut 7 for connecting and positioning, the light rod outer diameter of the tension pin 5 is matched with the outer hole diameter of the positioning plate and the cylindrical nut, the sharp part is processed with external threads, the corresponding nut transverse position is made into a threaded hole, the first fixed nut 6 and the second fixed nut 7 are also pin type structures, which are respectively extended from the outside of the body partition frame web plate to the bottom hole of the cylindrical nut from the front and rear sides, and the corresponding threaded holes are made at the intersection with the tension pin 5 for the fixation of the tension pin.

[0027] Wherein, the tension pin 5 is provided with a shaft shoulder at the positioning shaft to control the tension direction stress, and the end of the extending rod is provided with a plate type handle, the first fixed nut 6 and the second fixed nut 7 are designed with different lengths of handles and cutting sides due to the different corresponding thread diameters, so as to be convenient for distinguishing and using.

Claims

1. A helicopter main reduction support frame positioner, characterized by, The positioner comprises: a support fixedly connected with the frame beam; a guide column, one end of which is in sliding connection with the support; a positioning plate connected with the other end of the guide column, the positioning plate being used for positioning the helicopter main reduction support frame.

2. The positioner of claim 1, wherein, The support and the frame beam are connected through fine adjustment of the thickness of the gasket to ensure the theoretical installation position controlled in this direction; The support and the frame beam are connected by screw and cylindrical pin combination.

3. The positioner of claim 2, wherein, The support is a double fork ear structure, and the inside is provided with a cross-shaped recess, the dimensions of which are precisely machined.

4. The positioner of claim 3, wherein, The guide column is cross-shaped in the column part, and the dimensions are precisely machined. The guide column is a connecting piece for controlling the up-down movement of the structure, and is in loose fit connection with the support. The theoretical position is fixed by using precision pins, and the free state is fixed by using suspension holes.

5. The positioner of claim 4, wherein, The positioning plate is the main part of the structure, and is in step contact with the positioning end surface of the main reduction support frame, so that the dimensional position and smoothness of the positioning surface can be better ensured. Four precision holes corresponding to the bosses on the main reduction support frame are formed on the positioning plate, and are used for ensuring the relative position of the main reduction front support frame body spacer frame.

6. The positioner of claim 5, wherein, The guide column has a suspended section, which can be used as an operating handle.

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