CN109677583B

CN109677583B - Adjustable limiting device

Info

Publication number: CN109677583B
Application number: CN201811483714.7A
Authority: CN
Inventors: 姚东磊; 朱楠; 孙岩
Original assignee: Taiyuan Aero Instruments Co Ltd
Current assignee: Taiyuan Aero Instruments Co Ltd
Priority date: 2018-12-05
Filing date: 2018-12-05
Publication date: 2022-05-17
Anticipated expiration: 2038-12-05
Also published as: CN109677583A

Abstract

The invention belongs to the technical field of mechanical structures, and relates to an adjustable limiting device for an airplane unfolding mechanism. The high-precision adjustable limiting device comprises an adjusting cover plate assembly (1) and an adjusting support assembly (4), wherein the periphery of the adjusting cover plate assembly (1) penetrates through a waist-shaped hole in a fixing frame (3) through screws (2) to be connected with the adjusting support assembly (4) on the other side, so that the adjusting support assembly (4) can be adjusted in position along with the cover plate assembly (1) along the waist-shaped hole in the fixing frame (3). The high-precision adjustable limiting device can realize independent regulation of the limiting position and independent regulation of the switch position after installation by specific structural design of the adjusting cover plate assembly and the adjusting support assembly, thereby effectively improving the position regulation precision of the unfolding mechanism.

Description

Adjustable limiting device

Technical Field

The invention belongs to the technical field of mechanical structures, and relates to an adjustable limiting device for an airplane unfolding mechanism.

Background

In the unfolding mechanism used by a certain airplane, the precision requirement on the in-place position of the rotation of the mechanism is high and is +/-0.4 mm according to actual requirements, so that the unfolding position of the mechanism needs to be accurately limited. The limiting device of the traditional aircraft unfolding mechanism generally adopts a plurality of fixed limiting blocks for limiting, and the in-place precision of the mechanism is ensured by means of the mounting precision of the limiting blocks. However, because the accumulated error is large in the machining and assembling processes of other parts such as the mechanism mounting frame, if the traditional limiting device is adopted, the in-place precision of the mechanism is difficult to ensure.

Disclosure of Invention

The purpose of the invention is: the high-precision adjustable limiting device is simple in structure and convenient to adjust.

The technical scheme of the invention is as follows: the utility model provides an adjustable stop device of high accuracy, its includes adjustment apron subassembly 1, adjustment support subassembly 4, wherein, adjustment apron subassembly 1 passes the waist shape hole on the mount through the screw all around and is connected with the adjustment support subassembly 4 of opposite side for adjustment support subassembly 4 can carry out position control along with apron subassembly 1 along mount waist shape hole.

Adjusting cover plate assembly 1's adjusting block apron 13 middle part is provided with switch adjustment piece 11 and micro-gap switch 14, and wherein, switch adjustment piece 11 and micro-gap switch 14 are located adjusting block apron both sides respectively, fix on adjusting block apron 13 waist shape hole through the screw for micro-gap switch 14 can carry out the position adjustment along with the switch adjustment piece, and the mount of micro-gap switch position department is hollow out construction, avoids mutual interference.

The adjusting support component 4 comprises an adjusting support 41, an outer shifting piece 42, an inner shifting piece 43 and a spring 44, wherein the outer shifting piece 42 is coaxial with the inner shifting piece 43 and can be in contact with the rotating arm of the unfolding mechanism, the spring 44 is sleeved on the outer shifting piece and is positioned in the inner cavity of the inner shifting piece, and the inner shifting piece can press the microswitch 14.

And the adjusting support assembly 4 is also provided with a limiting blocking piece 5 for limiting the position of the rotating arm of the unfolding mechanism.

The screws penetrating through the waist-shaped holes of the fixing frame and the screws penetrating through the waist-shaped holes of the adjusting block cover plate are both positioned on the same side of the adjusting block cover plate.

The invention has the technical effects that: the high-precision adjustable limiting device can realize independent regulation of the limiting position and independent regulation of the switch position after installation by specific structural design of the adjusting cover plate assembly and the adjusting support assembly, thereby effectively improving the position regulation precision of the unfolding mechanism.

Drawings

FIG. 1 is a schematic structural view of a high-precision adjustable limiting device of the invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic structural view of the adjustable cover assembly 1;

FIG. 4 is a schematic view of the adjustment mount assembly 4;

FIG. 5 is a top view of the adjustment mount assembly 4;

FIG. 6 is a schematic view of the initial state of the high-precision adjustable limiting device of the present invention;

FIG. 7 is a left side view of the high precision adjustable stop device of the present invention in an initial state;

FIG. 8 is a schematic view of the high-precision adjustable stop device of the present invention in position;

FIG. 9 is a left side view of the high precision adjustable stop device of the present invention in position;

the adjustable cover plate assembly comprises a base, an adjustable cover plate assembly 1, an adjustable cover plate assembly 2, a screw 3, a fixed frame 4, an adjustable support assembly 5, a limiting blocking piece 11, a switch adjusting piece 12, a screw 13, an adjustable block cover plate 14, a microswitch 41, an adjustable support 42, an outer shifting piece 43, an inner shifting piece 44, a spring 45 and a rotating arm.

Detailed Description

The invention is further illustrated with reference to the following figures and examples:

referring to fig. 1 and fig. 2, the high-precision adjustable limiting device of the present invention is composed of an adjusting cover plate assembly 1 and an adjusting support assembly 4. The two parts of assemblies are respectively positioned at two sides of the fixing frame 3 and are fixed on the unfolding fixing frame 3 through the screws 2, the unfolding fixing frame 3 is provided with a waist-shaped hole, when the position of the limiting device needs to be adjusted, the screws 2 are unscrewed, the cover plate assembly 1 is adjusted in an up-and-down moving mode, and the adjusting support assembly 4 can move up and down in a certain range along with the screws.

Referring to fig. 3, a switch adjustment sheet 11 and a micro switch 14 are disposed in the middle of an adjustment block cover plate 13 of the adjustment cover plate assembly 1, wherein the switch adjustment sheet 11 and the micro switch 14 are respectively located at two sides of the adjustment block cover plate and fixed on a waist-shaped hole of the adjustment block cover plate 13 through screws, when the switch position needs to be adjusted, the micro switch 14 unscrews the screws 12, moves the switch adjustment sheet 11 up and down, and the micro switch 14 can move up and down in a certain range along with the switch position, thereby achieving adjustment of the switch position. In addition, the fixing frame at the position of the microswitch 14 is of a hollow structure, so that mutual interference is avoided.

Referring to fig. 4 and 5, the adjusting support assembly 4 includes an adjusting support 41, an outer shifting piece 42, an inner shifting piece 43, a spring 44 and a limiting baffle 5. The outer shifting piece 42 is coaxial with the inner shifting piece 43 and can be in contact with the rotating arm of the unfolding mechanism, the spring 44 is sleeved on the outer shifting piece and is located in the inner cavity of the inner shifting piece, and the inner shifting piece can press the microswitch 14.

After the rotary arm 45 of the unfolding mechanism rotates to the right position, the limit blocking piece limits the continuous rotation of the rotary arm, at this time, the outer poking piece 42 is pushed by the rotary arm 45 to rotate, the inner poking piece 43 rotates along with the rotary arm, the reed of the microswitch 14 is pressed, the switch is in a closed state, after the rotary arm 45 of the unfolding mechanism leaves, the spring 44 pushes the inner poking piece 43 to return to the initial position, and the outer poking piece 42 rotates along with the rotary arm to return to the initial position, as shown in fig. 6, 7, 8 and 9.

When the rotating arm of the unfolding mechanism rotates to the right position, the rotating arm contacts with the limit stop 5, so that the rotating position of the unfolding mechanism is limited, as shown in fig. 9.

The high-precision adjustable limiting device is arranged on a fixing frame of the unfolding mechanism, after the limiting device is arranged, independent adjustment of the limiting position and independent adjustment of the opening and closing position can be realized through adjusting the cover plate assembly and the adjusting support assembly, accumulated errors in the machining and assembling processes of other parts such as a mechanism mounting frame can be effectively eliminated, the position adjusting precision of the unfolding mechanism can be effectively improved, the position adjusting precision can reach +/-0.1 mm, and the requirement of the position adjusting precision of the unfolding mechanism is met. In addition, the screw penetrating through the waist-shaped hole of the fixing frame and the screw penetrating through the waist-shaped hole of the adjusting block cover plate are both positioned on the same side of the adjusting block cover plate, so that the adjusting device is convenient to adjust, easy to popularize and apply and has a large practical application value.

Claims

1. An adjustable limiting device is characterized by comprising an adjusting cover plate assembly (1) and an adjusting support assembly (4), wherein the periphery of the adjusting cover plate assembly (1) penetrates through a waist-shaped hole in a fixing frame (3) through screws (2) to be connected with the adjusting support assembly (4) on the other side, so that the adjusting support assembly (4) can be adjusted in position along with the cover plate assembly (1) along the waist-shaped hole in the fixing frame (3);

the adjusting support assembly (4) is also provided with a limiting blocking piece (5) for limiting the position of the rotating arm of the unfolding mechanism;

a switch adjusting sheet (11) and a microswitch (14) are arranged in the middle of an adjusting block cover plate (13) of the adjusting cover plate assembly (1), wherein the switch adjusting sheet (11) and the microswitch (14) are respectively positioned on two sides of the adjusting block cover plate (13) and are fixed on a waist-shaped hole of the adjusting block cover plate (13) through screws (12), so that the microswitch (14) can be adjusted along with the switch adjusting sheet (11), and a fixing frame at the position of the microswitch (14) is of a hollow structure, thereby avoiding mutual interference;

the adjusting support assembly (4) comprises an adjusting support (41), an outer shifting piece (42), an inner shifting piece (43) and a spring (44), wherein the outer shifting piece (42) is coaxial with the inner shifting piece (43) and can be in contact with a rotating arm (45) of the unfolding mechanism, the spring (44) is sleeved on the outer shifting piece and is positioned in an inner shifting piece inner cavity, and the inner shifting piece can press the microswitch (14).

2. The adjustable limiting device according to claim 1, wherein the screw (2) passing through the waist-shaped hole of the fixing frame (3) and the screw (12) passing through the waist-shaped hole of the adjusting block cover plate (13) are both positioned on the same side of the adjusting block cover plate (13).