阅读说明：本技术 基于一种找正恢复组件的偏心衬套找正恢复方法 (Eccentric bushing alignment recovery method based on alignment recovery assembly ) 是由 蒋智华 曾馨靓 汪东明 于 2021-09-26 设计创作，主要内容包括：本发明涉及零件装配技术领域,尤其是涉及基于一种找正恢复组件的偏心衬套找正恢复方法,将衬套内孔定位销依次穿过第一层耳片上的交点衬套Ⅰ内孔和第二层耳片上的底孔；将转接衬套插入衬套内孔定位销与第二层耳片上的底孔之间；将标位衬套设于转接衬套上,再将待恢复衬套套在衬套内孔定位销上,旋转待恢复衬套至可以完全进入标位衬套内部；将待恢复衬套压入第二层耳片上的底孔2/3后拆卸标位衬套,再将恢复衬套完全压入第二层耳片上的底孔；最后将找正恢复组件剩下的结构从飞机交点的插耳结构上拆卸下来。本技术方案极大的简化了针对飞机插耳结构的偏心衬套恢复及更换工艺流程,并可有效缩短操作时间,且找正恢复组件结构简单、轻便,便于携带。(The invention relates to the technical field of part assembly, in particular to an eccentric bushing alignment recovery method based on an alignment recovery assembly, wherein a bushing inner hole positioning pin sequentially passes through an inner hole of an intersection point bushing I on a first layer of lug and a bottom hole on a second layer of lug; inserting the adapter bushing between the bushing inner hole positioning pin and the bottom hole on the lug plate of the second layer; arranging a positioning bushing on the adapter bushing, sleeving a bushing to be recovered on the positioning pin of the inner hole of the bushing, and rotating the bushing to be recovered until the bushing to be recovered can completely enter the positioning bushing; pressing the bush to be recovered into the bottom hole 2/3 on the second layer of lug, then disassembling the positioning bush, and then completely pressing the recovery bush into the bottom hole on the second layer of lug; and finally, disassembling the rest structure of the alignment recovery assembly from the lug structure of the aircraft intersection point. This technical scheme has greatly simplified the eccentric bush to the aircraft ear of inserting structure and has resumeed and change process flow to can effectively shorten operating time, and the alignment resumes subassembly simple structure, light, portable.)

1. An eccentric bushing aligning and recovering method based on an aligning and recovering assembly is characterized in that: the alignment recovery assembly comprises a bushing inner hole positioning pin (1), a switching bushing (2) and a positioning bushing (3);

the adapter bushing (2) is of a hollow cylindrical structure with two open ends, and the inner diameter of the adapter bushing (2) is larger than the diameter of the bushing inner hole positioning pin (1);

the position marking bushing (3) is of a hollow cylinder structure, and the internal structure of the position marking bushing (3) is matched with the bushing (9) to be recovered; one end of the positioning bush (3) is provided with an opening, the axis of the other end of the positioning bush (3) is provided with a centering hole (3.1) matched with the adapter bush (2), and the side surface of the positioning bush (3) is provided with at least two cracking grooves (3.2);

the eccentric bushing alignment recovery method comprises the following steps:

s1, preparing a bushing inner hole positioning pin (1) matched with the inner hole size of a first layer of lug plate (5) intersection point bushing I (7), an adapter bushing (2) and a positioning bushing (3) matched with the bushing inner hole positioning pin (1) based on the insertion lug structure of the airplane intersection point, wherein the adapter bushing (2) is matched with a bottom hole (6.1) in a second layer of lug plate (6);

s2, one end of the bushing inner hole positioning pin (1) sequentially penetrates through an inner hole of the intersection point bushing I (7) on the first layer lug (5) and a bottom hole (6.1) on the second layer lug (6) from one side of the first layer lug (5);

s3, sleeving the adapter bushing (2) on the bushing inner hole positioning pin (1), and pushing the adapter bushing (2) to enable the adapter bushing (2) to axially move along the bushing inner hole positioning pin (1) until one end of the adapter bushing (2) is inserted into a bottom hole (6.1) in the second layer of lug plate (6);

s4, aligning one end of the positioning bush (3) provided with the centering hole (3.1) with the bush inner hole positioning pin (1), and axially moving the positioning bush (3) along the bush inner hole positioning pin (1) from one end of the bush inner hole positioning pin (1) provided with the thread structure (1.1) until the positioning bush (3) is sleeved on the adapter bush (2) through the centering hole (3.1);

s5, sleeving the bush (9) to be recovered on the bush inner hole positioning pin (1), then rotating the bush (9) to be recovered until the bush (9) to be recovered can completely enter the inside of the position marking bush (3), and stopping rotating the bush (9) to be recovered;

s6, applying axial pressure to the bush to be recovered (9), and pressing the bush to be recovered (9) into the bottom hole (6.1) on the lug (6) of the second layer until the bush to be recovered (9) is inserted into the bottom hole (6.1) 2/3 on the lug (6) of the second layer;

s7, disassembling the positioning bushing (3) through the splitting cracking groove (3.2);

s8, continuing to apply axial pressure on the liner to be recovered (9) until the liner to be recovered (9) is completely inserted into the bottom hole (6.1) of the second layer of lug (6), and separating the adapter liner (2) from the bottom hole (6.1) of the second layer of lug (6);

and S9, detaching the rest structure of the alignment restoration assembly from the insert lug structure of the aircraft intersection, namely, restoring the installation work of the intersection bushing II (8) on the second layer of the lugs (6).

2. The eccentric bushing aligning and recovering method based on an aligning and recovering assembly according to claim 1, wherein: the alignment recovery assembly further comprises a falling prevention nut (4); the top of bush hole locating pin (1) is provided with screens structure (1.2), and bush hole locating pin (1) is close to the one end of bottom and is provided with and is used for preventing weighing down nut (4) complex helicitic texture (1.1).

3. The eccentric bushing aligning and recovering method based on an aligning and recovering assembly according to claim 2, wherein: in the step S5, after the rotation of the bush (9) to be recovered is stopped, the anti-falling nut (4) is installed on the thread structure (1.1) of the bush inner hole positioning pin (1); in the steps S6 and S8, the anti-falling nut (4) is rotated to apply axial pressure to the to-be-recovered bushing (9) under the action of the thread structure (1.1) by the anti-falling nut (4).

4. The method for recovering the alignment of the eccentric bushing based on the alignment recovering assembly as claimed in claim 3, wherein in step S9, the remaining structure for disassembling the alignment recovering assembly is to disassemble the anti-drop nut (4) from the bushing inner hole positioning pin (1), and then to sequentially pull the bushing inner hole positioning pin (1) away from the inner hole of the intersection bushing II (8) on the second layer of the lug (6) and the inner hole of the intersection bushing I (7) on the first layer of the lug (5).

5. The eccentric bushing aligning and restoring method based on an aligning and restoring assembly according to claim 3, wherein: two cracking grooves (3.2) are formed in the side face of the mark position lining (3), and in the step S7, the mark position lining (3) is divided into two halves equally based on the two cracking grooves (3.2).

Technical Field

The invention relates to the technical field of part assembly, in particular to an eccentric bushing alignment and recovery method based on an alignment and recovery assembly.

Background

The current wing body of military aircraft combines nodical the universal adoption to insert ear structural style, for improving anti extrusion strength and life and subsequent maintainability, can install the steel bush in aluminium system matrix structure usually, and the bush hole is coaxial on in order to guarantee each auricle, can join in marriage the hinge processing to the bush hole usually, and there is certain eccentric value in the bottom outlet on bush hole and the base member, and this eccentric value generally is 1 ~ 2 mm.

Stress deformation is easily generated at the joint of the wing body of the airplane after flying, so that the bushings are easy to fall off when the parts of the airplane body and the wings are decomposed, and the worn bushings can be replaced in the maintenance process of the airplane. Because of the eccentric amount that there is 1 ~ 2mm in bush hole and excircle, do not have the mature technique now and be used for alignment eccentric amount when resumeing the installation bush to guarantee the axiality of bush on each layer auricle, consequently, the precision that the bush was changed can't be ensured, and can't improve the change efficiency of bush.

Disclosure of Invention

The invention aims to solve the technical problems in the prior art, and provides an eccentric bushing alignment recovery method based on an alignment recovery assembly, which can adapt to the recovery and replacement conditions of eccentric bushings at multiple intersection points.

The invention is realized by the following technical scheme:

an eccentric bushing aligning and recovering method based on an aligning and recovering assembly comprises a bushing inner hole positioning pin, a transfer bushing and a positioning bushing;

the adapter bushing is of a hollow cylindrical structure with two open ends, and the inner diameter of the adapter bushing is larger than that of the positioning pin of the inner hole of the bushing;

the position marking bushing is of a hollow cylinder structure, and the internal structure of the position marking bushing is matched with the bushing to be recovered; one end of the positioning bushing is provided with an opening, the axis of the other end of the positioning bushing is provided with a centering hole matched with the adapter bushing, and the side surface of the positioning bushing is provided with at least two cracking grooves;

the eccentric bushing alignment recovery method comprises the following steps:

s1, preparing a bushing inner hole positioning pin matched with the size of an inner hole of the intersection point bushing I on the first layer of lug plate, and an adapter bushing and a positioning bushing matched with the bushing inner hole positioning pin, wherein the adapter bushing is matched with a bottom hole on the second layer of lug plate;

s2, one end of the bushing inner hole positioning pin sequentially penetrates through the inner hole of the intersection point bushing I on the first layer of lug and the bottom hole on the second layer of lug from one side of the first layer of lug;

s3, sleeving the adapter bushing on the bushing inner hole positioning pin, and pushing the adapter bushing to enable the adapter bushing to axially move along the bushing inner hole positioning pin until one end of the adapter bushing is inserted into the bottom hole in the second layer of lug;

s4, aligning one end of the positioning bush, which is provided with the centering hole, with the bushing inner hole positioning pin, axially moving the positioning bush along the bushing inner hole positioning pin from one end of the bushing inner hole positioning pin, which is provided with the threaded structure, until the positioning bush is sleeved on the adapter bush through the centering hole;

s5, sleeving the bush to be recovered on the inner hole locating pin of the bush, then rotating the bush to be recovered until the bush to be recovered can completely enter the inside of the position marking bush, and stopping rotating the bush to be recovered;

s6, applying axial pressure to the bush to be recovered, and pressing the bush to be recovered into the bottom hole in the second layer of lug plate until the bush to be recovered is inserted into the bottom hole 2/3 in the second layer of lug plate;

s7, disassembling the position marking bushing through splitting and cracking the groove;

s8, continuing to apply axial pressure on the bush to be recovered until the bush to be recovered is completely inserted into the bottom hole in the lug of the second layer, and separating the adapter bush from the bottom hole in the lug of the second layer;

and S9, detaching the rest structure of the alignment restoration assembly from the insert lug structure of the aircraft intersection, namely, restoring the installation work of the intersection bushing II on the second layer of the lugs.

Preferably, the alignment restoration assembly further comprises a drop nut; the top of bush hole locating pin is provided with the screens structure, and the one end that the bush hole locating pin is close to the bottom is provided with and is used for preventing weighing down nut complex helicitic texture.

Preferably, in the step S5, after the rotation of the bush to be recovered is stopped, the anti-falling nut is mounted on the thread structure of the positioning pin in the inner hole of the bush; in the steps S6 and S8, the anti-drop nut is rotated to apply an axial pressure to the bush to be restored under the action of the thread structure.

Preferably, in step S9, the remaining structure of the detachment and alignment recovery assembly is to detach the anti-drop nut from the bushing inner hole positioning pin, and then sequentially pull the bushing inner hole positioning pin away from the intersection bushing ii inner hole on the second layer of tabs and the intersection bushing i inner hole on the first layer of tabs.

Preferably, two cracking grooves are formed in the side surface of the position marking bushing, and in the step S7, the position marking bushing is divided into two halves on the basis of the two cracking grooves.

The invention has the following beneficial effects:

1) compared with the method of reserving allowance for the inner diameter of the bushing and then performing matching and reaming processing after the bushing is installed in the prior art, the technical scheme greatly simplifies the process flow of recovering and replacing the eccentric bushing aiming at the insertion lug structure of the airplane and can effectively shorten the operation time.

2) According to the technical scheme, the cracking groove is formed in the position marking bushing, so that the position marking bushing can be detached on the premise of not influencing the bushing to be recovered.

3) The anti-falling nut is rotated to apply axial pressure to the to-be-recovered bushing, so that the to-be-recovered bushing is more convenient, easier and faster to implement, and the to-be-recovered bushing can be prevented from falling off in the installation process.

Drawings

FIG. 1 is a schematic diagram of the implementation state of the present technical solution;

FIG. 2 is a schematic view of an insert lug structure of an aircraft intersection point;

FIG. 3 is a schematic view of the indexing bushing;

in the figure:

1. a bushing inner hole positioning pin; 1.1, a thread structure; 1.2, a clamping structure; 2. a transfer bushing; 3. a position marking lining; 3.1, centering a hole; 3.2, cracking the groove; 4. the anti-falling nut; 5. a first layer of ears; 6. a second layer of ears; 6.1, bottom hole; 7. an intersection point bushing I; 8. an intersection point bushing II; 9. the liner is to be recovered.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of the present invention, as generally described in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In order to make the technical means, the creation features, the achievement objects and the effects of the invention easy to understand, the structure and the working principle of the invention are further explained in the following with the accompanying drawings and the detailed implementation mode, but the protection scope of the invention is not limited thereto.

Example 1

The embodiment discloses an eccentric bushing alignment recovery method based on an alignment recovery assembly, and as a basic embodiment of the invention, the alignment recovery assembly comprises a bushing inner hole positioning pin 1, an adapter bushing 2 and a positioning bushing 3, wherein the outer diameter precision of the positioning pin is not lower than h 7; the adapter bushing 2 is of a hollow cylindrical structure with two open ends, and the inner diameter of the adapter bushing 2 is larger than the diameter of the bushing inner hole positioning pin 1; the position marking lining 3 is in a hollow cylinder structure, and the internal structure of the position marking lining 3 is matched with the lining 9 to be recovered; one end of the positioning bush 3 is provided with an opening, the axis of the other end of the positioning bush 3 is provided with a centering hole 3.1 matched with the adapter bush 2, and the side surface of the positioning bush 3 is provided with at least two cracking grooves 3.2;

the eccentric bushing alignment recovery method comprises the following steps:

s1, preparing a bushing inner hole positioning pin 1 matched with the size of an inner hole of an intersection point bushing I7 on a first layer of lug plate 5, an adapter bushing 2 and a marking bushing 3 matched with the bushing inner hole positioning pin 1, wherein the adapter bushing 2 is matched with a bottom hole 6.1 on a second layer of lug plate 6 based on an insert lug structure of an airplane intersection point;

s2, one end of the bushing inner hole positioning pin 1 sequentially penetrates through an inner hole of an intersection point bushing I7 on the first layer lug 5 and a bottom hole 6.1 on the second layer lug 6 from one side of the first layer lug 5;

s3, sleeving the adapter bushing 2 on the bushing inner hole positioning pin 1, and pushing the adapter bushing 2 to enable the adapter bushing 2 to axially move along the bushing inner hole positioning pin 1 until one end of the adapter bushing 2 is inserted into the bottom hole 6.1 on the second layer of lug 6;

s4, aligning one end of the positioning bush 3, which is provided with the centering hole 3.1, with the bush inner hole positioning pin 1, and axially moving the positioning bush 3 along the bush inner hole positioning pin 1 from one end of the bush inner hole positioning pin 1, which is provided with the thread structure 1.1, until the positioning bush 3 is sleeved on the adapter bush 2 through the centering hole 3.1;

and S5, sleeving the bush to be recovered 9 on the bush inner hole positioning pin 1, then rotating the bush to be recovered 9 until the bush to be recovered 9 can completely enter the inside of the positioning bush 3, and stopping rotating the bush to be recovered 9. At this time, the eccentric direction of the bush 9 to be restored has been aligned;

s6, applying axial pressure to the bush to be recovered 9, and pressing the bush to be recovered 9 into the bottom hole 6.1 on the second layer of lug 6 until the bush to be recovered 9 is inserted into the bottom hole 6.12/3 on the second layer of lug 6;

s7, disassembling the positioning bush 3 through the splitting cracking groove 3.2;

s8, continuing to apply axial pressure to the bush to be recovered 9 until the bush to be recovered 9 is completely inserted into the bottom hole 6.1 of the second layer of tabs 6, and the adaptor bush 2 is detached from the bottom hole 6.1 of the second layer of tabs 6;

and S9, detaching the rest structure of the alignment restoration assembly from the insert lug structure of the airplane intersection, namely, the restoration installation work of the intersection bushing II 8 on the second layer of the lugs 6. The intersection point bushing II 8 on the second layer of lugs 6 is the state of the bushing 9 to be recovered after being recovered.

Compared with the method of reserving allowance for the inner diameter of the bushing and then performing matching and reaming processing after the bushing is installed in the prior art, the technical scheme greatly simplifies the process flow of recovering and replacing the eccentric bushing aiming at the insertion lug structure of the airplane and can effectively shorten the operation time.

In addition, according to the technical scheme, the cracking grooves 3.2 are formed in the position lining 3, so that the position lining 3 can be detached on the premise of not influencing the lining 9 to be recovered.

Example 2

The embodiment discloses an eccentric bushing alignment recovery method based on an alignment recovery assembly, which is used as a basic embodiment of the invention, wherein the alignment recovery assembly comprises a bushing inner hole positioning pin 1, an adapter bushing 2, a positioning bushing 3 and a falling-proof nut 4, wherein a clamping structure 1.2 is arranged at the top of the bushing inner hole positioning pin 1, and a thread structure 1.1 used for being matched with the falling-proof nut 4 is arranged at one end, close to the bottom, of the bushing inner hole positioning pin 1; the adapter bushing 2 is of a hollow cylindrical structure with two open ends, and the inner diameter of the adapter bushing 2 is larger than the diameter of the bushing inner hole positioning pin 1; the position marking lining 3 is in a hollow cylinder structure, and the internal structure of the position marking lining 3 is matched with the lining 9 to be recovered; one end of the positioning bush 3 is provided with an opening, the axis of the other end of the positioning bush 3 is provided with a centering hole 3.1 matched with the adapter bush 2, and the side surface of the positioning bush 3 is provided with at least two cracking grooves 3.2;

the eccentric bushing alignment recovery method comprises the following steps:

s1, preparing a bushing inner hole positioning pin 1 matched with the size of an inner hole of an intersection point bushing I7 on a first layer of lug plate 5, an adapter bushing 2 and a marking bushing 3 matched with the bushing inner hole positioning pin 1, wherein the adapter bushing 2 is matched with a bottom hole 6.1 on a second layer of lug plate 6 based on an insert lug structure of an airplane intersection point;

s2, arranging one end of the bushing inner hole positioning pin 1 with a thread structure 1.1, and sequentially penetrating an inner hole of an intersection point bushing I7 on the first layer of lug 5 and a bottom hole 6.1 on the second layer of lug 6 from one side of the first layer of lug 5;

s3, sleeving the adapter bushing 2 on the bushing inner hole positioning pin 1 from the end, provided with the thread structure 1.1, of the bushing inner hole positioning pin 1, and pushing the adapter bushing 2 to enable the adapter bushing 2 to axially move along the bushing inner hole positioning pin 1 until one end of the adapter bushing 2 is inserted into the bottom hole 6.1 in the second layer of lug 6;

s4, aligning one end of the positioning bush 3, which is provided with the centering hole 3.1, with the bush inner hole positioning pin 1, and axially moving the positioning bush 3 along the bush inner hole positioning pin 1 from one end of the bush inner hole positioning pin 1, which is provided with the thread structure 1.1, until the positioning bush 3 is sleeved on the adapter bush 2 through the centering hole 3.1;

s5, sleeving the to-be-recovered bush 9 on the bush inner hole positioning pin 1 from one end, provided with the thread structure 1.1, of the bush inner hole positioning pin 1, then rotating the to-be-recovered bush 9 until the to-be-recovered bush 9 can completely enter the inside of the index position bush 3, stopping rotating the to-be-recovered bush 9, and then installing the anti-falling nut 4 on the thread structure 1.1 of the bush inner hole positioning pin 1;

s6, rotating the anti-falling nut 4 to enable the anti-falling nut 4 to exert axial pressure on the bush to be recovered 9 under the action of the thread structure 1.1, and pressing the bush to be recovered 9 into the bottom hole 6.1 on the second layer of lug 6 until the bush to be recovered 9 is inserted into the bottom hole 6.12/3 on the second layer of lug 6;

s7, disassembling the positioning bush 3 through the splitting cracking groove 3.2;

s8, continuing to apply axial pressure to the bush to be recovered 9 by rotating the anti-falling nut 4 until the bush to be recovered 9 is completely inserted into the bottom hole 6.1 on the second layer of lug 6, and separating the adapter bush 2 from the bottom hole 6.1 on the second layer of lug 6;

s9, the anti-falling nut 4 is detached from the bushing inner hole positioning pin 1, then the bushing inner hole positioning pin 1 is sequentially pulled away from an inner hole of the intersection point bushing II 8 on the second layer of lug 6 and an inner hole of the intersection point bushing I7 on the first layer of lug 5, and the adapter bushing 2 automatically falls off in the pulling away process of the bushing inner hole positioning pin 1, so that the recovery installation work of the intersection point bushing II 8 on the second layer of lug 6 is completed.

The embodiment optimizes the structure of the alignment recovery assembly, and in the eccentric bushing alignment recovery method, axial pressure is applied to the to-be-recovered bushing 9 by rotating the anti-falling nut 4, so that the method is more convenient, easier and quicker to implement, and the to-be-recovered bushing 9 can be prevented from falling off in the installation process.

Example 3

The embodiment discloses an eccentric bushing alignment recovery method based on an alignment recovery assembly, which is used as a basic embodiment of the invention, wherein the alignment recovery assembly comprises a bushing inner hole positioning pin 1, an adapter bushing 2, a positioning bushing 3 and a falling-proof nut 4, wherein a clamping structure 1.2 is arranged at the top of the bushing inner hole positioning pin 1, and a thread structure 1.1 used for being matched with the falling-proof nut 4 is arranged at one end, close to the bottom, of the bushing inner hole positioning pin 1; the adapter bushing 2 is of a hollow cylindrical structure with two open ends, and the inner diameter of the adapter bushing 2 is larger than the diameter of the bushing inner hole positioning pin 1; the position marking lining 3 is in a hollow cylinder structure, and the internal structure of the position marking lining 3 is matched with the lining 9 to be recovered; one end of the positioning bush 3 is provided with an opening, the axis of the other end of the positioning bush 3 is provided with a centering hole 3.1 matched with the adapter bush 2, and the side surface of the positioning bush 3 is provided with two cracking grooves 3.2;

the eccentric bushing alignment recovery method comprises the following steps:

s1, preparing a bushing inner hole positioning pin 1 matched with the size of an inner hole of an intersection point bushing I7 on a first layer of lug plate 5, an adapter bushing 2 and a marking bushing 3 matched with the bushing inner hole positioning pin 1, wherein the adapter bushing 2 is matched with a bottom hole 6.1 on a second layer of lug plate 6 based on an insert lug structure of an airplane intersection point;

s2, arranging one end of the bushing inner hole positioning pin 1 with a thread structure 1.1, and sequentially penetrating an inner hole of an intersection point bushing I7 on the first layer of lug 5 and a bottom hole 6.1 on the second layer of lug 6 from one side of the first layer of lug 5;

s3, sleeving the adapter bushing 2 on the bushing inner hole positioning pin 1 from the end, provided with the thread structure 1.1, of the bushing inner hole positioning pin 1, and pushing the adapter bushing 2 to enable the adapter bushing 2 to axially move along the bushing inner hole positioning pin 1 until one end of the adapter bushing 2 is inserted into the bottom hole 6.1 in the second layer of lug 6;

s4, aligning one end of the positioning bush 3, which is provided with the centering hole 3.1, with the bush inner hole positioning pin 1, and axially moving the positioning bush 3 along the bush inner hole positioning pin 1 from one end of the bush inner hole positioning pin 1, which is provided with the thread structure 1.1, until the positioning bush 3 is sleeved on the adapter bush 2 through the centering hole 3.1;

s5, sleeving the to-be-recovered bush 9 on the bush inner hole positioning pin 1 from one end, provided with the thread structure 1.1, of the bush inner hole positioning pin 1, then rotating the to-be-recovered bush 9 until the to-be-recovered bush 9 can completely enter the inside of the index position bush 3, stopping rotating the to-be-recovered bush 9, and then installing the anti-falling nut 4 on the thread structure 1.1 of the bush inner hole positioning pin 1;

s6, rotating the anti-falling nut 4 to enable the anti-falling nut 4 to exert axial pressure on the bush to be recovered 9 under the action of the thread structure 1.1, and pressing the bush to be recovered 9 into the bottom hole 6.1 on the second layer of lug 6 until the bush to be recovered 9 is inserted into the bottom hole 6.12/3 on the second layer of lug 6;

s7, based on the two cracking grooves 3.2, the positioning bush 3 is divided into two halves in a halving mode, so that the positioning bush 3 can be detached from the adapter bush 2;

s8, continuing to apply axial pressure to the bush to be recovered 9 by rotating the anti-falling nut 4 until the bush to be recovered 9 is completely inserted into the bottom hole 6.1 on the second layer of lug 6, and separating the adapter bush 2 from the bottom hole 6.1 on the second layer of lug 6;

s9, the anti-falling nut 4 is detached from the bushing inner hole positioning pin 1, then the bushing inner hole positioning pin 1 is sequentially pulled away from an inner hole of the intersection point bushing II 8 on the second layer of lug 6 and an inner hole of the intersection point bushing I7 on the first layer of lug 5, and the adapter bushing 2 automatically falls off in the pulling away process of the bushing inner hole positioning pin 1, so that the recovery installation work of the intersection point bushing II 8 on the second layer of lug 6 is completed.

This technical scheme is through setting up two and cracking groove 3.2 and dividing mark position bush 3 into two halves equally, has not only realized quick effectual dismantlement work, still avoids producing tiny piece.