阅读说明：本技术 一种飞机发动机的拆装方法 (Dismounting method of aircraft engine ) 是由 谭敬华 邱小欢 任金盛 伍晖 席小华 翁洋 于 2020-10-14 设计创作，主要内容包括：本发明公开了一种飞机发动机的拆装方法,采用的拆装设备包括：托架,提升机构,所述提升机构包括升降柱及安装在所述升降柱上的吊链,所述吊链连接有拉力控制器,以及用于所述提升机构的吊链与所述托架之间连接的适配器,发动机的拆装方法包括以下步骤：S1：用具有激光定位器的牵引器移动托架至发动机安装位置下方,匹配托架位置,S2：托架与牵引器脱开,S3：将各个适配器固定安装在托架上,S4：各个适配器连接对应提升机构上的吊链,S5：通过所述提升机构将所述托架提升至拆卸或安装发动机的高度位置,S6：通过拉力控制器加载各吊链所需的拉力,调节或保持发动机的姿态。本发明降低了劳动强度,同时提高了工作效率。(The invention discloses a method for disassembling and assembling an aircraft engine, which adopts disassembling and assembling equipment comprising the following steps: the engine assembling and disassembling method comprises the following steps of: s1: moving the carriage with a tractor having a laser positioner to below the engine mount location, matching the carriage position, S2: the carrier is disengaged from the retractor, S3: fixedly mounting each adapter on the bracket, S4: each adapter is connected with a sling chain on the corresponding lifting mechanism, S5: lifting the bracket to a height position for detaching or installing an engine by the lifting mechanism, S6: and the tension controller is used for loading the tension required by each hanging chain and adjusting or keeping the posture of the engine. The invention reduces the labor intensity and improves the working efficiency.)

1. A method for disassembling and assembling an aircraft engine is characterized in that disassembling and assembling equipment adopted by the method comprises the following steps:

a bracket which is matched with the engine is arranged on the engine,

the lifting mechanism comprises a lifting column and a sling chain arranged on the lifting column, the sling chain is connected with a tension controller,

an adapter for connection between a hoist chain of the lifting mechanism and the carriage,

the number of the lifting mechanisms and the number of the adapters are the same as that of the engine hoisting points;

the engine assembling and disassembling method comprises the following steps:

s1: moving the bracket to the position below the engine mounting position by using a tractor with a laser positioner, aligning the laser positioner with the engine mounting point to match the bracket position,

s2: the carrier is disengaged from the retractor and,

s3: each adapter is fixedly mounted on the bracket,

s4: each adapter is connected with a sling chain on the corresponding lifting mechanism,

s5: the bracket is lifted to a height position for detaching or installing an engine by the lifting mechanism,

s6: and the tension controller is used for loading the tension required by each hanging chain and adjusting or keeping the posture of the engine.

2. A method of removing an aircraft engine as defined in claim 1, wherein: in the process of transferring the weight of the engine from the airplane to the bracket when the engine is detached in the step S6, the lifting columns of the lifting mechanism are lifted synchronously relative to the airplane body to hold the lifting bracket and the engine.

3. A method of removing an aircraft engine as defined in claim 2, wherein: two sets of hoisting mechanisms are integrated into a whole to form a hoisting device, a base of the hoisting device is provided with an X-direction chute, two hoisting columns are vertically arranged in the X-direction chute, and a base of the hoisting device is arranged on a Y-direction guide rail.

4. A method of removing an aircraft engine as defined in claim 3, wherein: the dismounting device comprises two lifting devices, and the two lifting devices are respectively arranged on two sides of the engine.

5. The method of removing an aircraft engine as defined in claim 4, wherein: and a tension sensor is connected to a lifting chain of the lifting mechanism.

6. A method of dismounting an aircraft engine according to any one of claims 1 to 5, characterised in that: the bracket is provided with a slot for connecting the adapter.

7. A method of removing an aircraft engine as defined in claim 6, wherein: the adapter is provided with a connecting end for connecting the sling chain and an inserting end for connecting the bracket.

8. A method of removing an aircraft engine as defined in claim 6, wherein: the bottom of the bracket is provided with a roller capable of being locked.

Technical Field

The invention relates to the technical field of aircraft maintenance, in particular to a method for disassembling and assembling an aircraft engine.

Background

When the airplane is overhauled, airplane maintenance personnel need to detach the engine for deep maintenance, and then install the engine back after the maintenance work is completed. In the process of assembling and disassembling the engine, the operations of aligning, transferring, lifting, posture adjusting and the like of the engine need to be finished.

Referring to fig. 1, the conventional engine disassembly steps are as follows:

1. opening the engine jacket 1, and installing a lifting appliance 4 on each of front and rear lifting points on the engine hanger 3;

2. manually pushing the brackets 5a and 5b to the lower part of the engine 2, and carrying out primary alignment on the brackets 5a and 5b and the engine 2 by a visual inspection method;

3. the sling chain/rope 4b of the sling 4 is connected with the lifting part 5a of the bracket;

4. controlling a hand hoist 4a of the lifting appliance 4 to lift the lifting part 5a of the bracket to the height of the engine 2;

5. the lifting part 5a of the bracket is connected with the engine 2;

6. the engine 2 is detached from the engine hanger 3;

7. controlling a hand hoist 4a of the lifting appliance 4 to move a lifting part 5a of the bracket down to a fixed part 5b of the bracket;

8. the brackets 5a, 5b and the engine 2 thereon are manually pushed away.

The front and back positions of the engine hanger 3 are generally four hanging points, because the posture of the engine 2 needs to be kept in the dismounting process, the tension of each hanging point needs to be strictly controlled, the conventional dismounting method is to adjust the tension of each hanging point through a hand-operated hoist, and meanwhile, the tension meter display result on each hanger is observed manually to confirm whether the tension of each hanging point meets the requirement. In the process that the engine suspends in midair, take place to rock easily, it is big to appear that the risk that the engine was scraped and is bumped, in addition, the hoist of pre-installation on the engine gallows is about several hundred jin of weights, and the installation is wasted time and energy, and whole dismouting process operating personnel's intensity of labour is big, and work efficiency is low.

Disclosure of Invention

The invention aims to solve the technical problem that the method for disassembling and assembling the aircraft engine is provided, and the operations of aligning, transferring, lifting, posture adjusting and maintaining and the like of the engine are finished through a reasonable process flow and matched disassembling and assembling equipment, so that the labor intensity of personnel is reduced, and the working efficiency is improved.

The technical scheme adopted by the invention is as follows,

a method for disassembling and assembling an aircraft engine, wherein the disassembling and assembling device adopted by the method comprises the following steps:

a bracket which is matched with the engine is arranged on the engine,

the lifting mechanism comprises a lifting column and a sling chain arranged on the lifting column, the sling chain is connected with a tension controller,

an adapter for connection between a hoist chain of the lifting mechanism and the carriage,

the number of the lifting mechanisms and the number of the adapters are the same as that of the engine hoisting points;

the engine assembling and disassembling method comprises the following steps:

s1: moving the bracket to the position below the engine mounting position by using a tractor with a laser positioner, aligning the laser positioner with the engine mounting point to match the bracket position,

the bracket with the engine or empty can realize the movement in different directions such as turning, advancing, retreating and the like under the leading of the tractor, so that the heavy equipment can freely walk to approach to a preset position in a narrow space, the laser positioner upwards projects light which is always vertical, the bracket can be helped to accurately stop at the position where the engine is ready to be installed,

s2: the carrier is disengaged from the retractor and,

s3: each adapter is fixedly mounted on the bracket,

s4: each adapter is connected with a sling chain on the corresponding lifting mechanism,

s5: the bracket is lifted to a height position for detaching or installing the engine by the lifting mechanism, which is realized by the lifting movement of the lifting column,

s6: the tension controller loads the tension required by each hanging chain, the posture of the engine is adjusted or kept, the specific tension value required by each hanging point of the engine can be obtained by a corresponding aircraft maintenance technical manual, and the tension value on each hanging chain can be intelligently controlled through programs such as the tension controller in the prior art.

By adopting the method for dismounting the aircraft engine, the engine weight originally borne by the aircraft is changed to be borne by an external lifting mechanism in the dismounting process, before the engine is dismounted, a heavy lifting appliance does not need to be arranged on an engine lifting frame, the tension of each lifting point of the engine can be accurately controlled through a tension controller on the lifting mechanism, and the attitude of the engine can be adjusted or kept.

In the process of transferring the weight of the engine from the airplane to the bracket when the engine is detached in the step S6, the airplane may ascend due to the weight of the engine being removed, and in this process, the lifting column of the lifting mechanism ascends synchronously relative to the airplane body to keep lifting the bracket and the engine.

According to the dismounting device, two groups of lifting mechanisms are integrated into a whole to form a lifting device, an X-direction sliding groove is formed in a base of the lifting device, two lifting columns are vertically arranged in the X-direction sliding groove, the base of the lifting device is installed on a Y-direction guide rail, the two lifting columns can be adjusted in position along the X-direction sliding groove, the whole lifting device can be adjusted in position along the Y-direction guide rail, and translation and horizontal rotation of an engine on a bracket can be achieved through horizontal movement of the lifting columns, so that the posture of the engine can be adjusted.

The dismounting device comprises two lifting devices, and the two lifting devices are respectively arranged on two sides of the engine.

And a tension sensor is connected to a lifting chain of the lifting mechanism. Can cooperate the tension controller to set for the load restriction and avoid the pulling force value to overload, guarantee dismouting in-process security.

The bracket of the present invention is provided with a slot for connecting the adapter.

The adapter is provided with a connecting end for connecting the sling chain and an inserting end for connecting the bracket.

The specific shape and structure of the adapter are selected according to the engine to be disassembled and assembled, so that the adapter is fixedly connected with the bracket, and the adapter is connected with a hanging chain of the lifting mechanism.

The bottom of the bracket is provided with a roller capable of being locked, so that the bracket is convenient to move.

The invention has the following advantages:

1. according to the method for dismounting the aircraft engine, the lifting mechanism bears the weight of the engine in the dismounting process, a heavy lifting appliance does not need to be arranged on the engine lifting frame, the tractor replaces manpower to move the bracket, the laser positioner is used for accurate alignment, the position of the bracket is prevented from being adjusted back and forth, the labor intensity is reduced, and the working efficiency is improved.

2. According to the lifting device, the position of the lifting column can be adjusted along the X direction and the Y direction, the two lifting devices are matched with each other to realize translation and horizontal rotation of the engine on the bracket, the rolling of the engine can be realized by combining the lifting of the lifting column, the posture of the engine is accurately adjusted and maintained, and the engine is convenient to disassemble and assemble.

3. The lifting mechanism can accurately control the tension of the lifting chain by arranging the tension controller, and compared with the prior art in which an operator controls the tension of each lifting point of an engine through visual observation and manual adjustment, the problems of overload and the like caused by human errors are reduced.

In conclusion, the engine dismounting method disclosed by the invention reduces the labor intensity, improves the working efficiency, bears the weight of the engine through the lifting device, adjusts the posture of the engine, can accurately control the tension of each lifting point of the engine, keeps the posture of the engine, can reduce the shaking of the engine in the whole dismounting process, avoids scraping the engine, replaces manpower with machinery, and improves the safety of equipment and personnel.

Drawings

The invention is described in further detail below with reference to the following figures and specific examples:

FIG. 1 is a schematic illustration of a prior art aircraft engine shown disassembled;

FIG. 2 is a schematic illustration of the transfer of a tractor traction carriage according to the present invention;

FIG. 3 is a schematic view of the position of the dismounting device and the aircraft during the dismounting process of the engine according to the present invention;

FIG. 4 is an enlarged view of the engine mounting and dismounting apparatus and engine of FIG. 3;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a lifting device for use with the present invention;

FIG. 7 is a bracket for use with the present invention;

FIG. 8 is an adapter for use with the present invention;

description of reference numerals:

prior art fig. 1:

a. an engine jacket; 2. an engine; 3. an engine hanger, 4 and a lifting appliance; 4a, manually cranking a gourd; 4b, a sling chain/rope; 5a, a lifting part of the bracket; 5b, a fixing part of the bracket;

FIGS. 2 to 8 of the present invention

1. An engine jacket; 2. an engine; 5. a bracket; 51. a slot; 6. a retractor; 7. a laser locator; 8. a lifting device; 81. a first lifting column; 81a, a first sling chain; 82. a second lifting column; 82a, a second sling chain; 83. a lifting column moving wheel; 84. an X-direction chute; 85. a Y-direction guide rail; 9. an adapter; 91. a connecting end; 92. and (7) inserting the terminals.

Detailed Description

As shown in fig. 2 to 8, the disassembling and assembling apparatus employed in the present invention includes:

a bracket 5 adapted to the engine 2 is provided,

the lifting mechanism comprises a lifting column and a sling chain arranged on the lifting column, the sling chain is connected with a tension controller,

specifically, in this embodiment, as shown in fig. 6, two sets of lifting mechanisms are integrated into a whole to form a lifting device 8, a base of the lifting device 8 is provided with an X-direction chute 84, a first lifting column 81 and a second lifting column 82 are erected in the X-direction chute 84, the first lifting column 81 is provided with a first hanging chain 81a, the second lifting column 82 is provided with a second hanging chain 82a, the bottoms of the two lifting columns are provided with lifting column moving wheels 83 installed in the X-direction chute 84, a base of the lifting device 8 is installed on a Y-direction rail 85, the two lifting columns can perform position adjustment along the X-direction chute, the whole lifting device can perform position adjustment along the Y-direction rail, the dismounting device includes two lifting devices 8, the two lifting devices 8 are respectively arranged at two sides of the engine 2, and translation and horizontal rotation of the engine on the bracket can be realized through horizontal movement of the lifting columns, the rolling of the engine can be realized by combining the lifting of the lifting column, and the posture of the engine can be adjusted.

An adapter 9 for connection between the hoist chain of the lifting mechanism and the carrier 5,

in particular, referring to fig. 7 and 8, the bracket 5 is provided with a slot 51 for connecting the adapter 9, the adapter 9 having a connecting end 91 for connecting the sling chain and a plug end 92 for connecting the bracket 5.

The number of the lifting mechanisms and the number of the adapters 9 are the same as the number of the engine hoisting points;

the engine assembling and disassembling method comprises the following steps:

s1: a tractor 6 with a laser locator 7 is used for moving the bracket 5 to the position below the installation position of the engine 2, the laser locator 7 is aligned with the installation point of the engine 2, the position of the bracket 5 is matched,

the bracket with the engine or empty can realize the movement in different directions such as turning, advancing, retreating and the like under the leading of the tractor 2, so that the heavy equipment can freely approach to a preset position in a narrow space, the laser positioner upwards projects light which is always vertical, the bracket can be helped to accurately stop at the position where the engine is ready to be installed,

s2: the carrier is disengaged from the retractor and,

s3: each adapter is fixedly mounted on the bracket,

s4: each adapter is connected with a hanging chain on a corresponding lifting mechanism, the lifting mechanism needs to be moved to a set position in advance,

s5: the bracket is lifted to a height position for detaching or installing the engine by the lifting mechanism, which is realized by the lifting movement of the lifting column,

s6: the tension controller loads the tension required by each hanging chain, the posture of the engine is adjusted or kept, the specific tension value required by each hanging point of the engine can be obtained by a corresponding aircraft maintenance technical manual, and the tension value on each hanging chain can be intelligently controlled through programs such as the tension controller in the prior art.

When the engine in the step S6 is detached, the engine 2 is connected to the bracket 5, and the weight of the engine is transferred from the airplane to the bracket 5, and the airplane may ascend due to the weight of the engine being removed, and during this process, the lifting columns of the lifting mechanism are lifted synchronously relative to the airplane body to hold the lifting bracket and the engine. Then the engine 2 is detached from the engine hanger 3, the lifting mechanism is controlled to enable the engine 2 to stably descend to the ground along with the bracket 5, after the engine 2 is separated from the airplane, the adapter 9 is taken down to enable the bracket 5 to be separated from the lifting mechanism, and the tractor 6 is connected with the bracket 5 to transfer away the engine 2.

During the engine installation, translation, the horizontal rotation of engine 2 on bracket 5 can be realized to two hoisting device 8 mutually supporting, and the roll that combines the lift of lift post can realize engine 2 accurately adjusts and keeps the gesture of engine 2, conveniently installs engine 2 on engine gallows 3, and the back of finishing the installation, engine 2 and bracket 5 separation, then bracket 5 descends.

And a tension sensor is connected to a lifting chain of the lifting mechanism. Can cooperate the tension controller to set for the load restriction and avoid the pulling force value to overload, guarantee dismouting in-process security.

The specific shape and structure of the adapter are selected according to the engine to be disassembled and assembled, so that the adapter is fixedly connected with the bracket, and the adapter is connected with a hanging chain of the lifting mechanism.

The bottom of the bracket 5 is provided with a roller capable of being locked, so that the bracket is convenient to move.

The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.