CN108801106B

CN108801106B - Device and method for measuring dead-point-free stroke of interlocking mechanism

Info

Publication number: CN108801106B
Application number: CN201810849324.0A
Authority: CN
Inventors: 唐斌; 郝明; 连林平; 姚广超; 孙霄; 朱杰; 周继平
Original assignee: State Run Wuhu Machinery Factory
Current assignee: State Run Wuhu Machinery Factory
Priority date: 2018-07-28
Filing date: 2018-07-28
Publication date: 2020-07-03
Anticipated expiration: 2038-07-28
Also published as: CN108801106A

Abstract

The invention relates to a dead-point-free stroke measuring device and a dead-point-free stroke measuring method for an interlocking mechanism, wherein the measuring device comprises a main body, a hoop, a cylindrical pin, an eyelet bolt, a threaded sleeve, a screw rod, a locking nut, a spiral sleeve and a positioning nut; the measuring method comprises the following steps: after the position of the spiral sleeve is adjusted to be opposite to and close to a switch-on rocker arm of a tested product, the measuring device is fixed on the tested product; II, secondly: adjusting the spiral sleeve to enable the spiral sleeve to be in a critical state of contact with a switch-on rocker arm of a tested product and not to be jacked, and measuring a distance L1 from the lower end face of the positioning nut to the upper end face of the main body by using a vernier caliper; thirdly, the method comprises the following steps: adjusting a spiral sleeve to gradually jack up the switching-on rocker arm to be in a mechanical unlocking state, and stopping adjustment at the moment, wherein a vernier caliper measures a distance L2 from the lower end face of the positioning nut to the upper end face of the main body; fourthly, the method comprises the following steps: and obtaining the working dead-center-free stroke L which is L2-L1. The invention solves the problem that the stroke of the interlocking mechanism without a dead point cannot be accurately measured; the method has the advantages of accurate measurement and high efficiency.

Description

Device and method for measuring dead-point-free stroke of interlocking mechanism

Technical Field

The invention relates to the technical field of aircraft maintenance measurement, in particular to a device and a method for measuring a dead-point-free stroke of an interlocking mechanism.

Background

At present, when an interlocking mechanism of an aircraft rocket ejection seat is manufactured and repaired, the working stroke of a switch-on rocker arm in the interlocking mechanism needs to be measured, the function of the switch-on rocker arm is to switch on an electric door device in the interlocking mechanism and transmit an electric signal to start a system to work, the working stroke of the switch-on rocker arm determines whether the electric door device in the interlocking mechanism can be switched on or not, and the working stroke of the electric door device determines whether the rocket seat ejection working link is continuous and effective or not, if the interlocking mechanism is switched on and the rocker arm cannot meet the specified working stroke, the serious consequence that the rocket ejection seat cannot be safely saved is possibly caused.

In the existing measuring mode, a vernier caliper is generally adopted to directly measure the working stroke of a switching rocker arm in an interlocking mechanism. However, the switching-on rocker arm has no working dead point after the interlocking mechanism electric door device is switched on, namely the movement stroke end of the switching-on rocker arm is not coincident with the mechanical unlocking switching-on position, and the rocker arm does not stop moving after the mechanical unlocking switching-on, so that the method for directly measuring the working stroke of the switching-on rocker arm by using the vernier caliper has the defect of large measurement error.

Disclosure of Invention

In order to avoid and solve the technical problems, the invention provides a device and a method for measuring the dead-center-free stroke of an interlocking mechanism.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides an interlock mechanism does not have dead point stroke measurement device, includes that the left end portion is the main part of semicircle form, articulates on the left end portion of main part and be semicircular clamp, the left end portion upside of main part is connected with the cylindric lock, install the swing bolt that passes the clamp on the cylindric lock, the cooperation has the swivel nut on the swing bolt, the right-hand member portion of main part is equipped with the screw rod along clamp axial distribution, the front end cooperation that lies in the main part on the screw rod has lock nut, is located the rear end cooperation spiral sleeve of main part, be equipped with spacing spiral sleeve's set nut on the screw rod.

Preferably, a handle for rotation is mounted on the screw sleeve perpendicular to the axial direction of the screw sleeve.

Preferably, the cambered surface that left end portion is the semicircle form on the main part, the cambered surface that is the semicircle form on the clamp all is equipped with the cushion.

A method of measurement using an interlock mechanism dead center free stroke measurement device, comprising:

the method comprises the following steps: and (3) mounting the measuring device on the product to be measured, adjusting the position of the spiral sleeve to be over against and close to the switch-on rocker arm of the product to be measured, and fixing the measuring device on the product to be measured.

Step two: and adjusting the spiral sleeve to enable the spiral sleeve to be in a critical state of contact with a switch-on rocker arm of a tested product and not to be jacked, and measuring and recording a distance L1 from the lower end face of the positioning nut to the upper end face of the main body protruding lug seat through a vernier caliper.

Step three: and adjusting the spiral sleeve to gradually jack up the switching-on rocker arm of the product to be measured, stopping adjustment at the moment when the switching-on rocker arm moves to a mechanical unlocking state, and measuring and recording the distance L2 from the lower end face of the positioning nut to the upper end face of the main body protruding lug seat through a vernier caliper.

Step four: and calculating to obtain the working dead point-free stroke L of the switching rocker arm from L2 to L1.

The invention has the beneficial effects that: the invention solves the problem that the dead-point-free stroke of the interlocking mechanism cannot be accurately measured because the movement stroke of the rocker arm of the interlocking mechanism is dead-point-free when the electric switch is switched on; the method has the advantages of accurate measurement, simple operation, high positioning speed and high efficiency, and realizes the engineering measurement of the dead-point-free stroke without the interlocking mechanism.

Drawings

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

FIG. 1 is a front view of the structure of the present invention;

fig. 2 is a top view of the structure used in conjunction with the interlock mechanism of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.

As shown in fig. 1 to 2, an interlocking mechanism no-dead-point stroke measuring device comprises a main body 3 with a semicircular left end part, a semicircular hoop 6 hinged on the left end part of the main body 3, a cylindrical pin 10 connected with the upper side of the left end part of the main body 3, an eyelet bolt 9 passing through the hoop 6 mounted on the cylindrical pin 10, a threaded sleeve 8 matched on the eyelet bolt 9, a screw rod 5 axially distributed along the hoop 6 arranged at the right end part of the main body 3, a locking nut 4 matched at the front end of the main body 3 on the screw rod 5, a spiral sleeve 1 matched at the rear end of the main body 3, and a positioning nut 2 arranged on the screw rod 5 and used for limiting the spiral sleeve 1. The locking nut 4 is used for locking and positioning the screw rod 5 and the main body 3 after the length of the screw rod 5 is properly adjusted, so that the position of the screw rod 5 is not changed when the screw sleeve 1 is subsequently adjusted

And a handle 7 for rotation is arranged on the screw sleeve 8 and is perpendicular to the axis direction of the screw sleeve. The function of the bolt is to increase the tightening torque of the threaded sleeve 8, ensure the tightening degree of the threaded sleeve 8 on the swing bolt 9 and realize the function of a force application lever.

The cambered surface that left end portion is semicircle on main part 3, the cambered surface that is semicircle on the clamp 6 all is equipped with cushion 11. The clamping end a for protecting the tested product is not damaged when the clamp is clamped.

the method comprises the following steps: the screw sleeve 8 is unscrewed, the clamp 6 and the body 3 are separated, the measuring device is installed on the clamping end a of the measured product, the position of the measuring device is adjusted, the position of the screw sleeve 1 is enabled to be just opposite to and close to the switch-on rocker arm b of the measured product, the clamp 6 and the body 3 are closed, and the measuring device is fixed on the measured product by screwing the screw sleeve 8.

Step two: by rotating the screw 5, the length of the lug projecting from the body 3 is adjusted so that it is close to the product switch-on rocker but not in contact with the switch-on rocker b, and the locking nut 4 is tightened to lock the position of the screw 5 relative to the body 3. Adjusting the position of the spiral sleeve 1 on the screw rod 5 to enable the spiral sleeve to be in a critical state that the spiral sleeve is in contact with and does not jack up the switching-on rocker arm b of the tested product, and recording the critical state as the initial position S of the switching-on rocker arm b; and then the positioning nut 2 is screwed down, the position of the spiral sleeve 1 relative to the screw rod 5 is locked, and the distance L1 from the lower end face of the positioning nut 2 to the upper end face of the lug seat protruded out of the main body 3 is measured and recorded by a vernier caliper.

Step three: loosening the positioning nut 2, continuing to rotate the spiral sleeve 1, enabling the spiral sleeve to gradually jack up a switch-on rocker arm b of a tested product, recording the stop position S' of the switch-on rocker arm b at the moment when the switch-on rocker arm b moves to a mechanical unlocking state (namely the tail end of a dead-point-free stroke is characterized in that the rocker arm has no movement constraint force and the interlocking mechanism is switched on), stopping rotating the spiral sleeve 1, screwing the positioning nut 2, locking the position of the spiral sleeve 1, keeping the position of the spiral sleeve 1 stable when paying attention to locking, and measuring and recording the distance L2 from the lower end face of the positioning nut 2 to the upper end face of the protruding lug seat of the main body 3 through a vernier caliper.

In conclusion, the invention solves the problem that the stroke without the dead point of the interlocking mechanism cannot be accurately measured because the rocker arm of the interlocking mechanism has no dead point when the electric door is switched on; the method has the advantages of accurate measurement, simple operation, high positioning speed and high efficiency, and realizes the engineering measurement of the dead-point-free stroke without the interlocking mechanism.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an interlock mechanism does not have dead point stroke measurement device which characterized in that: the novel bolt comprises a main body (3) with a semicircular left end part, a hoop (6) hinged to the left end part of the main body (3) and in a semicircular shape, wherein a cylindrical pin (10) is connected to the upper side of the left end part of the main body (3), an eyelet bolt (9) penetrating through the hoop (6) is installed on the cylindrical pin (10), a threaded sleeve (8) is matched on the eyelet bolt (9), a screw rod (5) axially distributed along the hoop (6) is arranged at the right end part of the main body (3), a locking nut (4) is matched at the front end of the main body (3) on the screw rod (5), a rear end of the main body (3) is matched with the spiral sleeve (1), and a positioning nut (2) of the limiting spiral sleeve (1) is arranged on the screw rod (5).

2. The interlocking mechanism dead-center-free stroke measuring device of claim 1, wherein: and a handle (7) for rotation is arranged on the screw sleeve (8) and is vertical to the axis direction of the screw sleeve.

3. The interlocking mechanism dead-center-free stroke measuring device of claim 1, wherein: the cambered surface that left end portion is semicircle form on main part (3), the cambered surface that is semicircle form on clamp (6) all is equipped with cushion (11).

4. A measuring method using the interlock mechanism dead-center-free stroke measuring device according to claim 1, characterized in that: the method comprises the following steps:

the method comprises the following steps: the measuring device is arranged on a product to be measured, and the measuring device is fixed on the product to be measured after the position of the spiral sleeve (1) is adjusted to be over against and close to a switch-on rocker arm of the product to be measured;

step two: adjusting the spiral sleeve (1) to enable the spiral sleeve to be in a critical state of contact with a switch-on rocker arm of a tested product and not to be jacked, and measuring and recording a distance L1 from the lower end face of the positioning nut (2) to the upper end face of the main body (3) protruding out of the lug seat through a vernier caliper;

step three: adjusting the spiral sleeve (1) to gradually jack up a switch-on rocker arm of a tested product, stopping adjustment at the moment when the switch-on rocker arm moves to a mechanical unlocking state, and measuring and recording a distance L2 from the lower end surface of the positioning nut (2) to the upper end surface of the lug seat protruded out of the main body (3) through a vernier caliper;