Hydraulic auxiliary equipment for aviation exhaust nozzle welding

Abstract

The utility model discloses hydraulic auxiliary equipment for aviation exhaust nozzle welding, which comprises a supporting mechanism, three annular connecting seats are adjustably sleeved outside the supporting mechanism, and the upper parts of the three annular connecting seats are respectively provided with a tensioning mechanism, namely an upper-layer tensioning mechanism, a middle-layer tensioning mechanism and a lower-layer tensioning mechanism; each tensioning mechanism is a linkage type fixing mechanism; an external control box body is connected through a power supply control line; meanwhile, a lifting control mechanism is arranged on the upper end face of the upper-layer tensioning mechanism, the linkage type fixing mechanism is adopted, and the inner wall of the exhaust nozzle can be well tensioned, fixed and adjusted through a linkage type driving insert structure and a linkage type driven insert structure; and the exhaust nozzle fixedly connected to the annular connecting base can be adjusted up and down, the welding convenience is improved, and the working intensity of welding workers is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation equipment parts processing, in particular to a hydraulic auxiliary device for aviation tail nozzle welding. Background Art

[0002] The tail nozzle in aviation equipment is a conical tubular structure, which requires welders to weld the annular material section by section to form a complete structure. The tail nozzle needs to be connected and fixed during welding to facilitate welding. At the same time, due to the need to weld different parts, the fixing equipment is required to be able to lift and rotate (rotation is achieved by connecting to the welding positioner). It is difficult for existing equipment to fix and lift this type of product well, and there is no existing product that can be installed on the welding positioner to achieve rotation adjustment. Utility Model Content

[0003] The utility model aims at the above problems and proposes a hydraulic auxiliary device for aviation tail nozzle welding to solve the above problems.

[0004] In order to solve the above technical problems, the utility model provides a hydraulic auxiliary equipment for aviation tail nozzle welding, which is installed on the upper part of the welding positioner, including a cylindrical support mechanism, a connecting machine base that can be connected to the welding positioner is provided at the bottom of the support mechanism, and three annular connecting seats are adjustable on the outside of the support mechanism, namely a first annular connecting seat, a second annular connecting seat and a third annular connecting seat; the upper parts of the first annular connecting seat, the second annular connecting seat and the third annular connecting seat are respectively provided with an annular tensioner for tightening and fixing the inner wall of the aviation tail nozzle The structures are: an upper tensioning mechanism located at the upper end of the first annular connecting seat, a middle tensioning mechanism located at the upper end of the second annular connecting seat, and a lower tensioning mechanism located at the upper end of the third annular connecting seat; the upper tensioning mechanism, the middle tensioning mechanism and the lower tensioning mechanism are all linkage fixing mechanisms based on overall linkage tensioning and opening; the linkage fixing mechanism is connected to an external control box through a power control line; at the same time, a lifting control mechanism is provided on the upper end surface of the upper tensioning mechanism, which can control the lifting and lowering of the upper tensioning mechanism, the middle tensioning mechanism and the lower tensioning mechanism respectively.

[0005] As a preferred embodiment of the present invention, the linkage fixing mechanism comprises: a combined hydraulic telescopic mechanism located on the upper end surface of the upper tensioning mechanism, the middle tensioning mechanism or the lower tensioning mechanism;

[0006] The combined hydraulic expansion and contraction mechanism comprises: a first active insert assembly and a first driven insert assembly for connecting and tightening the aviation tail nozzle; a second active insert assembly and a second driven insert assembly; a third active insert assembly and a third driven insert assembly; a fourth active insert assembly and a fourth driven insert assembly; the above four pairs of assemblies are all installed on the upper end of an annular connecting piece at the upper end of the first annular connecting seat, the second annular connecting seat and the third annular connecting seat, and form a circular structure, which together form a tensioning mechanism;

[0007] The first active insert assembly and the first driven insert assembly include: a first active insert assembly consisting of a first hydraulic cylinder, a first guide rail slider, and a second guide rail slider, wherein the first guide rail slider and the second guide rail slider are respectively located on both sides of the first hydraulic cylinder, and the first hydraulic cylinder is extended and retracted forward and backward to drive the first guide rail slider and the second guide rail slider to move forward and backward; a first driven insert assembly consisting of a third guide rail slider, a fourth guide rail slider, a first spring, and a second spring, wherein the third guide rail slider and the first spring form a tensile connection, and the fourth guide rail slider and the second spring form a tensile connection, and when the first hydraulic cylinder is extended and retracted forward and backward, the first spring drives the third guide rail slider, and the second spring drives the fourth guide rail slider to move forward and backward;

[0008] The second active insert assembly and the second driven insert assembly include: a second active insert assembly consisting of a second hydraulic cylinder, a fifth guide rail slider, and a sixth guide rail slider, wherein the fifth guide rail slider and the sixth guide rail slider are respectively located on both sides of the second hydraulic cylinder, and the fifth guide rail slider and the sixth guide rail slider are driven to move forward and backward by the front and rear extension of the second hydraulic cylinder; a second driven insert assembly consisting of a seventh guide rail slider, an eighth guide rail slider, a third spring, and a fourth spring, wherein the seventh guide rail slider and the third spring form a tensile connection, and the eighth guide rail slider and the fourth spring form a tensile connection, and when the second hydraulic cylinder extends and retracts forward and backward, the third spring drives the seventh guide rail slider, and the fourth spring drives the eighth guide rail slider to move forward and backward;

[0009] Among them, the third active insert assembly and the third driven insert assembly include: a third active insert assembly composed of a third hydraulic cylinder, a ninth guide rail slider, and a tenth guide rail slider, wherein the ninth guide rail slider and the tenth guide rail slider are respectively located on both sides of the third hydraulic cylinder, and the third hydraulic cylinder is extended and retracted forward and backward to drive the ninth guide rail slider and the tenth guide rail slider to move forward and backward; a third driven insert assembly composed of an eleventh guide rail slider, a twelfth guide rail slider, a fifth spring, and a sixth spring, wherein the eleventh guide rail slider and the fifth spring form a tensile connection, and the twelfth guide rail slider and the sixth spring form a tensile connection, and when the third hydraulic cylinder is extended and retracted forward and backward, the fifth spring drives the eleventh guide rail slider, and the sixth spring drives the twelfth guide rail slider to move forward and backward;

[0010] Among them, the fourth active insert combination and the fourth driven insert combination include: the fourth active insert combination composed of a fourth hydraulic cylinder, a thirteenth guide slider and a fourteenth guide slider, wherein the thirteenth guide slider and the fourteenth guide slider are respectively located on both sides of the fourth hydraulic cylinder, and the thirteenth guide slider and the fourteenth guide slider are driven to move forward and backward through the forward and backward extension and contraction of the fourth hydraulic cylinder; the fourth driven insert combination composed of a fifteenth guide slider, a sixteenth guide slider, a seventh spring and an eighth spring, wherein the fifteenth guide slider and the seventh spring form a tensile connection, and the sixteenth guide slider and the eighth spring form a tensile connection, and when the fourth hydraulic cylinder extends and contracts forward and backward, the seventh spring drives the fifteenth guide slider, and the eighth spring drives the sixteenth guide slider to move forward and backward.

[0011] Furthermore, the supporting mechanism is provided with a lifting mechanism on the outside thereof, which can lift up and down the first annular connecting seat, the second annular connecting seat and the third annular connecting seat respectively; the lifting mechanisms are: a first lifting mechanism combination that can lift up and down the first annular connecting seat; a second lifting mechanism combination that can lift up and down the second annular connecting seat; and a third lifting mechanism combination that can lift up and down the third annular connecting seat;

[0012] The first lifting mechanism combination, the second lifting mechanism combination and the third lifting mechanism combination include six screw guide mechanisms, namely: a first screw guide mechanism, a second screw guide mechanism, a third screw guide mechanism, a fourth screw guide mechanism, a fifth screw guide mechanism and a sixth screw guide mechanism arranged vertically and equidistantly on the outside of the support mechanism;

[0013] Among them, the first screw guide mechanism, the fourth screw guide mechanism and the first annular connecting seat form a lifting motion connection; the second screw guide mechanism, the fifth screw guide mechanism and the second annular connecting seat form a lifting motion connection; the third screw guide mechanism, the sixth screw guide mechanism and the third annular connecting seat form a lifting motion connection;

[0014] The upper end of the first screw guide mechanism is provided with a first square-shaped adjusting bolt; the upper end of the second screw guide mechanism is provided with a second square-shaped adjusting bolt; the upper end of the third screw guide mechanism is provided with a third square-shaped adjusting bolt; the upper end of the fourth screw guide mechanism is provided with a fourth square-shaped adjusting bolt; the upper end of the fifth screw guide mechanism is provided with a fifth square-shaped adjusting bolt; the upper end of the sixth screw guide mechanism is provided with a sixth square-shaped adjusting bolt;

[0015] The first hand wheel and the second hand wheel can form a rotationally matched connection with the first adjusting bolt, the second adjusting bolt, the third adjusting bolt, the fourth adjusting bolt, the fifth adjusting bolt and the sixth adjusting bolt, and can be connected to any two of the first adjusting bolt, the second adjusting bolt, the third adjusting bolt, the fourth adjusting bolt, the fifth adjusting bolt or the sixth adjusting bolt as needed.

[0016] As a further preferred embodiment of the present invention, the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are all electrically controlled hydraulic cylinders, and the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are all connected to an external control box through a power control line, so that the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are controlled by control buttons on the external control box.

[0017] After adopting the above technical improvements, the utility model has the following advantages:

[0018] 1. The utility model adopts a linkage fixing mechanism, and through the linkage active insert structure and the driven insert structure, the inner wall of the tail nozzle can be tightened, fixed and adjusted well;

[0019] 2. The utility model uses six longitudinally arranged screw guide rail mechanisms on the annular connecting seat and adopts manual adjustment to adjust the tail nozzle fixedly connected to the annular connecting seat up and down, thereby improving the convenience of welding and reducing the work intensity of welding workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 What is shown is the overall structure diagram of the utility model;

[0021] Figure 2 Shown is the upper end surface structure diagram of the linkage type fixing mechanism in the utility model;

[0022] Among them: 1. Support mechanism; 2. Connecting base; 3. First annular connecting seat; 4. Second annular connecting seat; 5. Third annular connecting seat; 6. Upper tensioning mechanism; 7. Middle tensioning mechanism; 8. Lower tensioning mechanism; 9. External control box; 10. First hydraulic cylinder; 11. First guide rail slider; 12. Second guide rail slider; 13. Third guide rail slider; 14. Fourth guide rail slider; 15. First spring; 16. Second spring; 17. Second hydraulic cylinder; 18. Fifth guide rail slider; 19. Sixth guide rail slider; 20. Seventh guide rail slider; 21. Eighth guide rail slider; 22. Third spring; 23. Fourth spring; 24. Third hydraulic cylinder; 25. Ninth guide rail slider; 26. Tenth guide rail slider; 27. Eleventh guide rail slider; 28. twelfth guide rail slider; 29. ​​fifth spring; 30. sixth spring; 31. fourth hydraulic cylinder; 32. thirteenth guide rail slider; 33. fourteenth guide rail slider; 34. fifteenth guide rail slider; 35. sixteenth guide rail slider; 36. seventh spring; 37. eighth spring; 38. annular connecting piece; 39. first screw guide mechanism; 40. second screw guide mechanism; 41. third screw guide mechanism; 42. fourth screw guide mechanism; 43. fifth screw guide mechanism; 44. sixth screw guide mechanism; 45. first adjusting bolt; 46. second adjusting bolt; 47. third adjusting bolt; 48. fourth adjusting bolt; 49. fifth adjusting bolt; 50. sixth adjusting bolt; 51. first hand wheel; 52. second hand wheel. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Combination Figure 1 and Figure 2 It can be seen that a hydraulic auxiliary equipment for aviation tail nozzle welding is installed on the upper part of the welding positioner, including a cylindrical support mechanism 1, and the bottom of the support mechanism 1 is provided with a connecting base 2 that can be connected to the welding positioner. By connecting the connecting base 2 and the upper end of the welding positioner, the connecting base 2 can be rotated.

[0025] Three annular connecting seats are adjustably sleeved on the outside of the supporting mechanism 1, namely the first annular connecting seat 3, the second annular connecting seat 4 and the third annular connecting seat 5; an annular tensioning mechanism for tightening and fixing the inner wall of the aviation tail nozzle is respectively provided on the upper part of the first annular connecting seat 3, the second annular connecting seat 4 and the third annular connecting seat 5, namely: an upper tensioning mechanism 6 located at the upper end of the first annular connecting seat 3, a middle tensioning mechanism 7 located at the upper end of the second annular connecting seat 4 and a lower tensioning mechanism 8 located at the upper end of the third annular connecting seat 5; the upper tensioning mechanism 6, the middle tensioning mechanism 7 and the lower tensioning mechanism 8 are all a linkage fixing mechanism based on overall linkage tightening and opening; in the utility model, the linkage fixing mechanism is connected to an external control box 9 through a power control line.

[0026] In the present utility model, the preferred linkage fixing mechanism includes: a combined hydraulic telescopic mechanism located on the upper end surface of the upper tensioning mechanism 6, the middle tensioning mechanism 7, or the lower tensioning mechanism 8;

[0027] In the utility model, the preferred combined hydraulic telescopic mechanism includes: a first active insert combination and a first driven insert combination for connecting and tightening the aviation tail nozzle; a second active insert combination and a second driven insert combination; a third active insert combination and a third driven insert combination; a fourth active insert combination and a fourth driven insert combination; the above four pairs of combinations are all installed on the upper end of an annular connecting piece 38 at the upper end of the first annular connecting seat 3, the second annular connecting seat 4 and the third annular connecting seat 5, and form a circular structure, together forming a tensioning mechanism; wherein the first active insert combination and the first driven insert combination include: a first hydraulic cylinder 10, a first guide rail slider 11, a second guide rail slider 1 2, wherein the first guide rail slider 11 and the second guide rail slider 12 are respectively located on both sides of the first hydraulic cylinder 10, and the first hydraulic cylinder 10 is extended and retracted forward and backward to drive the first guide rail slider 11 and the second guide rail slider 12 to move forward and backward; a first driven insert assembly composed of a third guide rail slider 13, a fourth guide rail slider 14, a first spring 15, and a second spring 16, wherein the third guide rail slider 13 and the first spring 15 form a tensile connection, and the fourth guide rail slider 14 and the second spring 16 form a tensile connection. When the first hydraulic cylinder 10 is extended and retracted forward and backward, the first spring 15 drives the third guide rail slider 13, and the second spring 16 drives the fourth guide rail slider 14 to move forward and backward.

[0028] Among them, the second active insert combination and the second driven insert combination include: a second active insert combination composed of a second hydraulic cylinder 17, a fifth guide rail slider 18, and a sixth guide rail slider 19, wherein the fifth guide rail slider 18 and the sixth guide rail slider 19 are respectively located on both sides of the second hydraulic cylinder 17, and the fifth guide rail slider 18 and the sixth guide rail slider 19 are driven to move forward and backward through the forward and backward extension of the second hydraulic cylinder 17; a second driven insert combination composed of a seventh guide rail slider 20, an eighth guide rail slider 21, a third spring 22, and a fourth spring 23, wherein the seventh guide rail slider 20 and the third spring 22 form a tensile connection, and the eighth guide rail slider 21 and the fourth spring 23 form a tensile connection. When the second hydraulic cylinder 17 extends and retracts forward and backward, the third spring 22 drives the seventh guide rail slider 20, and the fourth spring 23 drives the eighth guide rail slider 21 to move forward and backward.

[0029] Among them, the third active insert combination and the third driven insert combination include: a third active insert combination composed of a third hydraulic cylinder 24, a ninth guide rail slider 25, and a tenth guide rail slider 26, wherein the ninth guide rail slider 25 and the tenth guide rail slider 26 are respectively located on both sides of the third hydraulic cylinder 24, and the third hydraulic cylinder 24 is extended and retracted forward and backward to drive the ninth guide rail slider 25 and the tenth guide rail slider 26 to move forward and backward; a third driven insert combination composed of an eleventh guide rail slider 27, a twelfth guide rail slider 28, a fifth spring 29, and a sixth spring 30, wherein the eleventh guide rail slider 27 and the fifth spring 29 form a tensile connection, and the twelfth guide rail slider 28 and the sixth spring 30 form a tensile connection. When the third hydraulic cylinder 24 is extended and retracted forward and backward, the fifth spring 29 drives the eleventh guide rail slider 27, and the sixth spring 30 drives the twelfth guide rail slider 28 to move forward and backward.

[0030] Among them, the fourth active insert combination and the fourth driven insert combination include: a fourth active insert combination composed of a fourth hydraulic cylinder 31, a thirteenth guide rail slider 32, and a fourteenth guide rail slider 33, wherein the thirteenth guide rail slider 32 and the fourteenth guide rail slider 33 are respectively located on both sides of the fourth hydraulic cylinder 31, and the thirteenth guide rail slider 32 and the fourteenth guide rail slider 33 are driven to move forward and backward through the forward and backward extension of the fourth hydraulic cylinder 31; a fourth driven insert combination composed of a fifteenth guide rail slider 34, a sixteenth guide rail slider 35, a seventh spring 36, and an eighth spring 37, wherein the fifteenth guide rail slider 34 and the seventh spring 36 form a tensile connection, and the sixteenth guide rail slider 35 and the eighth spring 37 form a tensile connection. When the fourth hydraulic cylinder 31 is extended and retracted forward and backward, the seventh spring 36 drives the fifteenth guide rail slider 34, and the eighth spring 37 drives the sixteenth guide rail slider 35 to move forward and backward.

[0031] On the upper end surface of the upper tensioning mechanism 6, there are provided lifting control mechanisms capable of controlling the lifting of the upper tensioning mechanism 6, the middle tensioning mechanism 7 and the lower tensioning mechanism 8 respectively; they are: a first lifting mechanism combination capable of lifting the first annular connecting seat 3 up and down; a second lifting mechanism combination capable of lifting the second annular connecting seat 4 up and down; and a third lifting mechanism combination capable of lifting the third annular connecting seat 5 up and down;

[0032] In the utility model, the first lifting mechanism combination, the second lifting mechanism combination and the third lifting mechanism combination include six screw guide rail mechanisms, namely: a first screw guide rail mechanism 39, a second screw guide rail mechanism 40, a third screw guide rail mechanism 41, a fourth screw guide rail mechanism 42, a fifth screw guide rail mechanism 43 and a sixth screw guide rail mechanism 44, which are vertically and equidistantly arranged on the outside of the support mechanism.

[0033] In the above structure, the first screw guide mechanism 39, the fourth screw guide mechanism 42 and the first annular connecting seat 3 form a lifting motion connection; the second screw guide mechanism 40, the fifth screw guide mechanism 43 and the second annular connecting seat 4 form a lifting motion connection; and the third screw guide mechanism 41, the sixth screw guide mechanism 44 and the third annular connecting seat 5 form a lifting motion connection.

[0034] In the above structure, the upper end of the first screw guide mechanism 39 is provided with a first square adjusting bolt 45; the upper end of the second screw guide mechanism 40 is provided with a second square adjusting bolt 46; the upper end of the third screw guide mechanism 41 is provided with a third square adjusting bolt 47; the upper end of the fourth screw guide mechanism 42 is provided with a fourth square adjusting bolt 48; the upper end of the fifth screw guide mechanism 43 is provided with a fifth square adjusting bolt 49; the upper end of the sixth screw guide mechanism 44 is provided with a sixth square adjusting bolt 50.

[0035] In the present invention, a first hand wheel 51 and a second hand wheel 52 are provided, which can form a rotational cooperation connection with the first adjusting bolt 45, the second adjusting bolt 46, the third adjusting bolt 47, the fourth adjusting bolt 48, the fifth adjusting bolt 49, and the sixth adjusting bolt 50, and can be connected to any two of the first adjusting bolt 45, the second adjusting bolt 46, the third adjusting bolt 47, the fourth adjusting bolt 48, the fifth adjusting bolt 49, or the sixth adjusting bolt 50 as required. For example, when the first hand wheel 51 and the second hand wheel 52 are respectively fixed to the first adjusting bolt 45 and the fourth adjusting bolt 48, the first annular connecting seat 3 can be raised and lowered by manually adjusting the first screw guide mechanism 39 and the fourth screw guide mechanism 42. Similarly, when the first hand wheel 51 and the second hand wheel 52 are respectively fixed to the second adjusting bolt 46 and the fifth adjusting bolt 49, the second annular connecting seat 4 can be raised and lowered by manually adjusting the second screw guide mechanism 40 and the fifth screw guide mechanism 43. Furthermore, when the first hand wheel 51 and the second hand wheel 52 are fixed to the third adjusting bolt 47 and the sixth adjusting bolt 50 respectively, the third annular connecting seat 5 can be raised and lowered by manually adjusting the third screw guide mechanism 41 and the sixth screw guide mechanism 44 .

[0036] In the utility model, the first hydraulic cylinder 10, the second hydraulic cylinder 17, the third hydraulic cylinder 24 and the fourth hydraulic cylinder 31 are all electrically controlled hydraulic cylinders, and the first hydraulic cylinder 10, the second hydraulic cylinder 17, the third hydraulic cylinder 24 and the fourth hydraulic cylinder 31 are all connected to an external control box 9 through a power control line, so that the first hydraulic cylinder 10, the second hydraulic cylinder 17, the third hydraulic cylinder 24 and the fourth hydraulic cylinder 31 are controlled by the control buttons on the external control box 9.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hydraulic auxiliary equipment for aviation tail nozzle welding, installed on the upper part of the welding positioner, characterized in that: The invention comprises a cylindrical support mechanism, wherein a connection base which can be connected to a welding positioner is provided at the bottom of the support mechanism, and three annular connection seats are adjustablely sleeved on the outside of the support mechanism, namely, a first annular connection seat, a second annular connection seat and a third annular connection seat; the upper parts of the first annular connection seat, the second annular connection seat and the third annular connection seat are respectively provided with an annular tensioning mechanism for tightening and fixing the inner wall of the aviation tail nozzle, namely: an upper tensioning mechanism located at the upper end of the first annular connection seat; The upper layer tensioning mechanism, the middle layer tensioning mechanism located at the upper end of the second annular connecting seat and the lower layer tensioning mechanism located at the upper end of the third annular connecting seat; the upper layer tensioning mechanism, the middle layer tensioning mechanism and the lower layer tensioning mechanism are all linkage fixing mechanisms based on overall linkage tensioning and opening; the linkage fixing mechanism is connected to an external control box through a power control line; at the same time, a lifting control mechanism is provided on the upper end surface of the upper layer tensioning mechanism, which can control the lifting and lowering of the upper layer tensioning mechanism, the middle layer tensioning mechanism and the lower layer tensioning mechanism respectively; The linkage fixing mechanism comprises: a combined hydraulic telescopic mechanism located on the upper end surface of the upper tensioning mechanism, the middle tensioning mechanism or the lower tensioning mechanism; The combined hydraulic expansion and contraction mechanism comprises: a first active insert assembly and a first driven insert assembly for connecting and tightening the aviation tail nozzle; a second active insert assembly and a second driven insert assembly; a third active insert assembly and a third driven insert assembly; a fourth active insert assembly and a fourth driven insert assembly; the above four pairs of assemblies are all installed on the upper end of an annular connecting piece at the upper end of the first annular connecting seat, the second annular connecting seat and the third annular connecting seat, and form a circular structure, which together form a tensioning mechanism; The first active insert assembly and the first driven insert assembly include: a first active insert assembly consisting of a first hydraulic cylinder, a first guide rail slider, and a second guide rail slider, wherein the first guide rail slider and the second guide rail slider are respectively located on both sides of the first hydraulic cylinder, and the first hydraulic cylinder is extended and retracted forward and backward to drive the first guide rail slider and the second guide rail slider to move forward and backward; a first driven insert assembly consisting of a third guide rail slider, a fourth guide rail slider, a first spring, and a second spring, wherein the third guide rail slider and the first spring form a tensile connection, and the fourth guide rail slider and the second spring form a tensile connection, and when the first hydraulic cylinder is extended and retracted forward and backward, the first spring drives the third guide rail slider, and the second spring drives the fourth guide rail slider to move forward and backward; The second active insert assembly and the second driven insert assembly include: a second active insert assembly consisting of a second hydraulic cylinder, a fifth guide rail slider, and a sixth guide rail slider, wherein the fifth guide rail slider and the sixth guide rail slider are respectively located on both sides of the second hydraulic cylinder, and the fifth guide rail slider and the sixth guide rail slider are driven to move forward and backward by the front and rear extension of the second hydraulic cylinder; a second driven insert assembly consisting of a seventh guide rail slider, an eighth guide rail slider, a third spring, and a fourth spring, wherein the seventh guide rail slider and the third spring form a tensile connection, and the eighth guide rail slider and the fourth spring form a tensile connection, and when the second hydraulic cylinder extends and retracts forward and backward, the third spring drives the seventh guide rail slider, and the fourth spring drives the eighth guide rail slider to move forward and backward; Among them, the third active insert assembly and the third driven insert assembly include: a third active insert assembly composed of a third hydraulic cylinder, a ninth guide rail slider, and a tenth guide rail slider, wherein the ninth guide rail slider and the tenth guide rail slider are respectively located on both sides of the third hydraulic cylinder, and the third hydraulic cylinder is extended and retracted forward and backward to drive the ninth guide rail slider and the tenth guide rail slider to move forward and backward; a third driven insert assembly composed of an eleventh guide rail slider, a twelfth guide rail slider, a fifth spring, and a sixth spring, wherein the eleventh guide rail slider and the fifth spring form a tensile connection, and the twelfth guide rail slider and the sixth spring form a tensile connection, and when the third hydraulic cylinder is extended and retracted forward and backward, the fifth spring drives the eleventh guide rail slider, and the sixth spring drives the twelfth guide rail slider to move forward and backward; Among them, the fourth active insert combination and the fourth driven insert combination include: the fourth active insert combination composed of a fourth hydraulic cylinder, a thirteenth guide slider and a fourteenth guide slider, wherein the thirteenth guide slider and the fourteenth guide slider are respectively located on both sides of the fourth hydraulic cylinder, and the thirteenth guide slider and the fourteenth guide slider are driven to move forward and backward through the forward and backward extension and contraction of the fourth hydraulic cylinder; the fourth driven insert combination composed of a fifteenth guide slider, a sixteenth guide slider, a seventh spring and an eighth spring, wherein the fifteenth guide slider and the seventh spring form a tensile connection, and the sixteenth guide slider and the eighth spring form a tensile connection, and when the fourth hydraulic cylinder extends and contracts forward and backward, the seventh spring drives the fifteenth guide slider, and the eighth spring drives the sixteenth guide slider to move forward and backward.

2. The hydraulic auxiliary equipment for aviation tail nozzle welding according to claim 1, characterized in that: The supporting mechanism is provided with lifting mechanisms on the outside thereof, which can respectively lift up and down the first annular connecting seat, the second annular connecting seat and the third annular connecting seat; they are: a first lifting mechanism combination that can lift up and down the first annular connecting seat; a second lifting mechanism combination that can lift up and down the second annular connecting seat; and a third lifting mechanism combination that can lift up and down the third annular connecting seat; The first lifting mechanism combination, the second lifting mechanism combination and the third lifting mechanism combination include six screw guide mechanisms, namely: a first screw guide mechanism, a second screw guide mechanism, a third screw guide mechanism, a fourth screw guide mechanism, a fifth screw guide mechanism and a sixth screw guide mechanism arranged vertically and equidistantly on the outside of the support mechanism; Among them, the first screw guide mechanism, the fourth screw guide mechanism and the first annular connecting seat form a lifting motion connection; the second screw guide mechanism, the fifth screw guide mechanism and the second annular connecting seat form a lifting motion connection; the third screw guide mechanism, the sixth screw guide mechanism and the third annular connecting seat form a lifting motion connection; The upper end of the first screw guide mechanism is provided with a first square-shaped adjusting bolt; the upper end of the second screw guide mechanism is provided with a second square-shaped adjusting bolt; the upper end of the third screw guide mechanism is provided with a third square-shaped adjusting bolt; the upper end of the fourth screw guide mechanism is provided with a fourth square-shaped adjusting bolt; the upper end of the fifth screw guide mechanism is provided with a fifth square-shaped adjusting bolt; the upper end of the sixth screw guide mechanism is provided with a sixth square-shaped adjusting bolt; The first hand wheel and the second hand wheel can form a rotationally matched connection with the first adjusting bolt, the second adjusting bolt, the third adjusting bolt, the fourth adjusting bolt, the fifth adjusting bolt and the sixth adjusting bolt, and can be connected to any two of the first adjusting bolt, the second adjusting bolt, the third adjusting bolt, the fourth adjusting bolt, the fifth adjusting bolt or the sixth adjusting bolt as needed.

3. The hydraulic auxiliary equipment for aviation tail nozzle welding according to claim 1, characterized in that: The first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are all electrically controlled hydraulic cylinders, and the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are all connected to an external control box through a power control line, so that the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are controlled by control buttons on the external control box.

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