CN113237403A - Engine engine room lower cover support detection device and method - Google Patents

Engine engine room lower cover support detection device and method Download PDF

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Publication number
CN113237403A
CN113237403A CN202110338518.6A CN202110338518A CN113237403A CN 113237403 A CN113237403 A CN 113237403A CN 202110338518 A CN202110338518 A CN 202110338518A CN 113237403 A CN113237403 A CN 113237403A
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CN
China
Prior art keywords
lower cover
engine room
detection device
engine
joint
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Pending
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CN202110338518.6A
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Chinese (zh)
Inventor
郑康
蒋立
朱会景
井少杰
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Shaanxi Aircraft Industry Co Ltd
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Shaanxi Aircraft Industry Co Ltd
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Priority to CN202110338518.6A priority Critical patent/CN113237403A/en
Publication of CN113237403A publication Critical patent/CN113237403A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/003Measuring of motor parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automatic Assembly (AREA)

Abstract

The invention belongs to the assembly technology of engine room lower covers, and discloses a detection device for determining an engine room lower cover bracket and a engine room lower cover in the installation process. The detection device comprises a long rod, a joint and a pin; the two ends of the long rod are respectively provided with a joint which is welded into a whole. The joint is in a double-lug form and is connected with the lower cover support of the engine room through a single lug, and whether the size requirements of the lower cover support of the engine room and the drawing are consistent or not is detected. According to the invention, by analyzing the design technical requirements of the nacelle, combing the technical quality problems in conventional assembly, formulating a reasonable assembly process scheme, planning a reasonable assembly process flow, and adopting a reasonable assembly method, the assembly difficulty of the lower cover of the nacelle is reduced, and the technical indexes and performances of the nacelle are ensured to meet the design requirements.

Description

Engine engine room lower cover support detection device and method
Technical Field
The invention belongs to the technical field of assembly of lower covers of engine houses of aircraft. The device is used for checking the size of the lower cover of the engine room and the mounting size of the lower cover bracket of the engine room when the engine of the three-type platform aircraft is mounted with the engine room cover, so as to ensure that the engine room cover meets the technical condition requirements during mounting and eliminate the step difference of the engine room cover after mounting.
Background
The three-class platform aircraft engine nacelle consists of a nacelle front section, a nacelle upper cover, a nacelle side cover and a nacelle lower cover, and the four parts are simultaneously connected with an engine. In the installation process of the house sending port cover, the technical condition requirements of the house sending port cover are as follows: after the engine room opening cover is installed, the step difference between the engine room opening cover and the tail cabin is +/-2 mm, and the engine room pin can be smoothly plugged and pulled out. Because the engine room flap is the sheet metal component, the engine size does not have the control requirement, and after the engine level measurement, the problem of jump and difficult plug of engine room pin all can appear in the engine lower cover, does not have effectual detection device to detect now.
Disclosure of Invention
The device can effectively determine the mounting size of the engine room lower cover support and the size of the engine room lower cover, solves the problems of step difference and difficulty in pin plugging and unplugging, and achieves the purpose that the assembly requirement meets the technical conditions.
Technical scheme
In order to solve the technical problems, the invention is realized by the following technical scheme: the invention comprises an engine bracket installation detection device and a lower cover detection device of a power house, and the engine bracket installation detection device and the lower cover detection device of the power house have the same size, so that zero-to-zero matching of hole sites can be realized.
The detection device for the lower cover bracket of the engine compartment comprises a long rod 1, a connector 2 and a pin 3; two ends of the long rod 1 are respectively provided with a joint 2 which are welded into a whole. The joint 2 is in a double-lug form and is connected with the engine room lower cover support through a single lug to detect whether the engine room lower cover support meets the drawing size requirement or not.
The welding part of the joint 2 and the long rod 1 is also provided with a reinforcing rib.
The joint 2 is in a detachable form.
The long rod 1 can be set to be a hollow structure under the condition of meeting the strength requirement.
The height of the joint 2 should not interfere with the lower engine products.
The detection device is made of stainless steel.
The detection device can also be applied to detection of the lower cover of the engine room.
The aperture of the joint 2 of the detection device is consistent with that of the lower cover bracket of the engine room.
The method for detecting the lower cover bracket of the engine room comprises the following specific steps
Step 1, one end of the device is connected with a lower cover bracket of an engine room and fixed by a pin 3.
And 2, rotating the device, connecting the other end of the device with a lower cover support of the engine room, and observing whether step difference exists between the hole site of the device and the hole site of the lower cover support of the engine room.
And 3, inserting the pin 3 into the pin hole, wherein if the pin 3 can be inserted smoothly, the engine room lower cover support meets the installation requirement, and if the pin 3 cannot be inserted smoothly, the engine room lower cover support is out of tolerance in size or the engine room lower cover support is manufactured in size.
In the step 3, if the pin 3 cannot be inserted smoothly, the installation size of the engine and the manufacturing size of the engine room lower cover support need to be rechecked, and whether the design requirements are met or not is judged.
Technical effects
1. The problem of three kinds of platform airplanes can't guarantee the jump and the difficult installation of pin when installation send out the room lower cover now is solved.
2. The operation is simple and convenient.
3. The operation is carried out by one person, and the detection effect is obvious.
Drawings
FIG. 1 is a schematic view of a mounting and detecting device for a lower cover bracket of an engine room
FIG. 2 is an installation schematic diagram of a lower cover bracket detection device of an engine room
FIG. 3 is a schematic view of a detecting device for a lower cover of a hair-house
FIG. 4 is a schematic view of the installation of the detecting device for the lower cover of the hair-house
FIG. 5 is a schematic view showing the assembly process of the lower cover of the hair-house
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments:
1. defining the assembly requirements of the lower cover of the house
Fig. 1 and fig. 2 respectively show the structure of the nacelle and the structural form of the mounting of the lower cover and the engine, and by studying design patterns and related technical requirements, the technical requirements for the mounting of the lower cover of the nacelle are defined as follows:
a. the gap step difference between the delivery room opening cover and the delivery room tail cabin is +/-2 mm.
b. The locking mechanism of the hatch should be able to be smoothly locked and unlocked.
c. The connecting pin of the hatch cover can be smoothly plugged and pulled out.
d. The hatch cover can flexibly rotate and can not be blocked.
2. Planning assembly process flow
And reasonably planning the assembly process flow of the hatch cover according to the design pattern and the assembly requirement of the nacelle.
3. Method for formulating and assembling process
1. The size of the hole site of the engine is 8.5mm, the connecting bolt of the lower cover bracket of the engine room is 8mm, and a hole shaft gap exists to a certain extent, so that the lower cover bracket of the engine room is arranged on the lower cover bracket of the engine room after being arranged on the engine, the lower cover bracket detection device of the engine room is arranged on the lower cover bracket of the engine room, then the bolt for connecting the lower cover bracket of the engine room and the engine is adjusted, and when the pin of the lower cover bracket detection device of the engine room can be smoothly arranged on the lower cover bracket of the engine room, the nut is screwed, and the assembly of the lower cover bracket of the engine room is completed.
2. The detecting device for the lower cover of the engine room is installed to the lower cover of the engine room for detection, two ends of the detecting device are connected in the form of pins respectively, if two pins can be inserted smoothly, the lower cover of the engine room is required to be repaired, and after the lower cover of the engine room is repaired qualified, the lower cover of the engine room is connected with a support of the lower cover of the engine room, so that the lower cover of the engine room is assembled.
Frock is measured to send out room lower cover
Send out room flap when the installation, should be 746.889mm according to drawing dimensional requirement, because send out room flap is the sheet metal component, produces the deformation easily after the riveting, consequently carries out design detection device to this size, and the device includes 1 stock, 2 joints, 3 pins, and 2 joints pass through the welding with 1 stock, and the size of 1 stock is 746.889 mm. Install 1 stock and 2 joints to send out room lower cover joint department together, then insert the pinhole with 3 pins, if 3 pins can not normally insert, then judge that send out room lower cover size does not conform to technical requirement, concrete operating procedure is as follows:
1. one end of the device is connected with a joint of a lower cover of the hair-sending house and is fixed by a pin.
2. The device is rotated, the other end of the device is connected with the joint of the lower cover of the hair-saving house, and whether step difference exists between the hole site of the device and the hole site of the joint of the lower cover of the hair-saving house or not is observed.
3. And inserting the pin into the pin hole, wherein if the pin can be inserted smoothly, the manufacturing of the lower cover of the delivery room meets the technical requirement, and if the pin cannot be inserted smoothly, the size of the lower cover of the delivery room does not meet the technical requirement.
Examples
Engine support installation detection device
When the engine support is installed, should be 746.889mm according to drawing size requirement, the engine support is connected by the bolt with the engine, and engine self hole site size is 8.5mm, connecting bolt is 8mm, so will produce the hole axle clearance, consequently when control engine support installation size, be difficult to detect the support and whether satisfy the requirement, consequently design detection device to this size, the device includes 1 stock, 2 joints, 3 pins, 2 joints pass through the welding with 1 stock, and the size of 1 stock is 746.889 mm. Installing 1 stock and 2 joints to engine room lower cover support position together, then inserting the pinhole with 3 pins, if 3 pins can not insert normally, then judge that there is the discrepancy in engine size or there is the discrepancy in engine room lower cover support manufacturing size, specific operating procedure is as follows:
1. one end of the device is connected with a lower cover bracket of the engine room and fixed by a pin.
2. The device is rotated, the other end of the device is connected with the engine room lower cover support, and whether step difference exists between the hole site of the device and the hole site of the engine room lower cover support or not is observed.
3. And inserting the pin into the pin hole, wherein if the pin can be inserted smoothly, the engine room lower cover support meets the installation requirement, and if the pin cannot be inserted smoothly, the engine size or the engine room lower cover support is manufactured in an out-of-tolerance mode.

Claims (9)

1. Engine send out room lower cover support detection device, its characterized in that: comprises a long rod (1), a joint (2) and a pin (3); two ends of the long rod (1) are respectively provided with a joint (2) which are welded into a whole; the joint (2) is in a double-lug form and is connected with the lower cover bracket of the engine room through a single lug.
2. The engine room lower cover bracket detection device according to claim 1, characterized in that: and reinforcing ribs are arranged at the welding part of the joint (2) and the long rod (1).
3. The engine room lower cover bracket detection device according to claim 1, characterized in that: the joint (2) is detachable.
4. The engine room lower cover bracket detection device according to claim 1, characterized in that: the long rod (1) is arranged to be of a hollow structure under the condition of meeting the strength requirement.
5. The engine room lower cover bracket detection device according to claim 1, characterized in that: the height of the joint (2) does not interfere with the lower engine part.
6. The engine room lower cover bracket detection device according to claim 1, characterized in that: the detection device is made of stainless steel.
7. The engine room lower cover bracket detection device according to claim 1, characterized in that: the aperture of the detection device joint (2) is consistent with that of the lower cover bracket of the engine room.
8. The detection method of the engine room lower cover support is characterized by comprising the following specific steps:
step 1, connecting one end of a detection device with a lower cover bracket of an engine room, and fixing the detection device by using a pin (3);
step 2, rotating the detection device, connecting the other end of the detection device with the engine room lower cover support, and observing whether a step difference exists between the hole site of the detection device and the hole site of the engine room lower cover support;
and 3, inserting the pin (3) into the pin hole, wherein if the pin (3) can be smoothly inserted, the engine room lower cover support meets the installation requirement, and if the pin (3) cannot be smoothly inserted, the engine size or the manufacturing size of the engine room lower cover support is out of tolerance.
9. The engine room lower cover bracket detection method according to claim 8, wherein in the step (3), if the pin (3) cannot be inserted smoothly, the engine installation size and the engine room lower cover bracket manufacturing size need to be reviewed to determine whether the design requirements are met.
CN202110338518.6A 2021-03-26 2021-03-26 Engine engine room lower cover support detection device and method Pending CN113237403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110338518.6A CN113237403A (en) 2021-03-26 2021-03-26 Engine engine room lower cover support detection device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110338518.6A CN113237403A (en) 2021-03-26 2021-03-26 Engine engine room lower cover support detection device and method

Publications (1)

Publication Number Publication Date
CN113237403A true CN113237403A (en) 2021-08-10

Family

ID=77130676

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110338518.6A Pending CN113237403A (en) 2021-03-26 2021-03-26 Engine engine room lower cover support detection device and method

Country Status (1)

Country Link
CN (1) CN113237403A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020104924A1 (en) * 2001-02-08 2002-08-08 Sebastien Roszak Device for attachment of an engine onto an aircraft nacelle stub
CN200975873Y (en) * 2006-09-22 2007-11-14 比亚迪股份有限公司 Engine bracket detecting table
CN203053365U (en) * 2013-01-24 2013-07-10 山重建机有限公司 Device for detecting segment difference between engine bracket mounting surface and rotary platform
WO2015120749A1 (en) * 2014-02-14 2015-08-20 哈尔滨工业大学 Aircraft engine rotor assembly method and device
CN108317930A (en) * 2018-02-13 2018-07-24 中核(天津)科技发展有限公司 The hole-distance detecting device and detection method of steelframe long range circular hole

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020104924A1 (en) * 2001-02-08 2002-08-08 Sebastien Roszak Device for attachment of an engine onto an aircraft nacelle stub
CN200975873Y (en) * 2006-09-22 2007-11-14 比亚迪股份有限公司 Engine bracket detecting table
CN203053365U (en) * 2013-01-24 2013-07-10 山重建机有限公司 Device for detecting segment difference between engine bracket mounting surface and rotary platform
WO2015120749A1 (en) * 2014-02-14 2015-08-20 哈尔滨工业大学 Aircraft engine rotor assembly method and device
CN108317930A (en) * 2018-02-13 2018-07-24 中核(天津)科技发展有限公司 The hole-distance detecting device and detection method of steelframe long range circular hole

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