CN115519315A

CN115519315A - Temperature difference method dismouting device of preceding baffle

Info

Publication number: CN115519315A
Application number: CN202211301773.4A
Authority: CN
Inventors: 覃莺; 曾振旋; 邓乐富; 曹立廷
Original assignee: AECC South Industry Co Ltd
Current assignee: AECC South Industry Co Ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2022-12-27

Abstract

The invention discloses a temperature difference method dismounting device of a front baffle, which is used for dismounting the front baffle on a turbine disc and comprises a base, a cooling mechanism and a heating dismounting mechanism, wherein the base is used for supporting and fixing the turbine disc, the cooling mechanism comprises a refrigerator and a cooling shaft connected with the refrigerator, the cooling shaft is used for penetrating through a shaft hole of the turbine disc, a plurality of cooling holes respectively facing different positions of the turbine disc are distributed on the periphery of the cooling shaft, the heating dismounting mechanism comprises a heater and a heating wrench, the heating wrench comprises a hot gas distributor and a handle connected with the hot gas distributor, the hot gas distributor is connected with the heater and is used for surrounding the periphery of the front baffle, a plurality of heating holes are distributed on the hot gas distributor along the circumferential direction of the hot gas distributor, and the handle is used for driving the front baffle to move relative to the turbine disc. The temperature difference method dismounting device for the front baffle can ensure the safety of dismounting, ensure the smoothness of dismounting, improve the assembly precision, and avoid extrusion deformation and even abrasion among parts, thereby ensuring the stable performance of the parts.

Description

Temperature difference method dismouting device of preceding baffle

Technical Field

The invention relates to the technical field of assembly of aero-engines, in particular to a temperature difference method dismounting device for a front baffle.

Background

At present, because the requirement of an aircraft engine on the machining precision of parts is extremely high, the disassembly resistance is large for two interference fit parts, and the parts are assembled by adopting a temperature difference method. For example, a turbine disc and a front baffle of an aircraft engine need to be heated in a heating box during assembly, and then assembled in the turbine disc after the assembly part of the front baffle is heated and expanded, and need to be cooled in a cooling box by dry ice or liquid nitrogen during decomposition, and then decomposed after the matching structure between the turbine disc and the front baffle is sufficiently cooled.

However, the conventional dismounting method does not consider that the parts can continuously exchange heat with the external environment in the processes of carrying, clamping and assembling, and particularly for a turbine disc with larger mass and diameter, a large number of auxiliary tools are required in the processes of carrying, clamping and assembling, so that more time is consumed, the temperature of the parts deviates from a preset value when the dismounting is actually started, so that the assembling clearance is reduced or the parts are in interference, and the parts are easily extruded and deformed or even abraded due to forcible dismounting of the parts. To this, in practical application, in order to guarantee that the temperature of part accords with the dismouting demand, need heat the part to higher temperature or cool off to lower temperature in advance, can bury the potential safety hazard of scald, frostbite for the dismouting operation.

Disclosure of Invention

The invention provides a temperature difference method dismounting device for a front baffle, which aims to solve the technical problem that the front baffle of the conventional aircraft engine is difficult to dismount relative to a turbine disc.

A temperature difference method dismounting device of a front baffle is used for dismounting the front baffle on a turbine disc and comprises a base, a cooling mechanism and a heating dismounting mechanism, wherein the cooling mechanism and the heating dismounting mechanism are respectively arranged on the base;

the base is used for supporting and fixing a turbine disc;

the cooling mechanism comprises a refrigerator and a cooling shaft, the cooling shaft is arranged on the base and is used for penetrating through a shaft hole of the turbine disc, a cooling channel connected with the refrigerator is arranged inside the cooling shaft, and a plurality of cooling holes which respectively face different positions of the turbine disc and are communicated with the cooling channel are distributed on the periphery of the cooling shaft;

the dismouting mechanism of heating includes the heater and heats the spanner, heat the spanner include hot gas distributor and with the handle that hot gas distributor connects, hot gas distributor with heater connection is used for encircleing the periphery setting of preceding baffle, hot gas distributor has laid a plurality of heating holes along its circumference, the handle is used for leaning on preceding baffle and drive preceding baffle is relative the turbine dish removes.

Preferably, the cooling shaft comprises a first segment and a second segment, the first segment is used for penetrating into a shaft hole of the turbine disc, and the second segment is used for penetrating out of one end of the turbine disc facing the front baffle;

the cooling hole is including laying in first cooling hole on the first section and laying in second cooling hole on the second section, first cooling hole orientation the inner wall setting in the shaft hole of turbine dish, the second cooling hole orientation be used for on the turbine dish with preceding baffle complex assembly structure sets up.

Preferably, the first segment is provided with a plurality of rows of cooling hole groups at intervals along the axial direction, each cooling hole group comprises a plurality of first cooling holes distributed along the circumferential direction of the first segment, and the first cooling holes in two adjacent rows of cooling hole groups are arranged along the axial direction of the first segment in a staggered manner.

More preferably, the first cooling holes in the plurality of rows of cooling hole sets are arranged in a spiral shape along the axial direction of the first segment.

Preferably, the heating and dismounting mechanism further comprises a ring-shaped pipe connected with the heater and a plurality of pipe nipples arranged on the ring-shaped pipe at intervals along the circumferential direction of the ring-shaped pipe, the pipe nipples being connected with the hot gas distributor and used for guiding the hot gas in the ring-shaped pipe into the hot gas distributor.

Preferably, the heating and dismounting mechanism further comprises a bleed air pipe, a first end of the bleed air pipe is connected with the heat dissipation port of the refrigerator, and a second end of the bleed air pipe is connected with the air inlet of the heater.

Preferably, the heating wrench further comprises a pulling claw which is sleeved on the handle and is used for moving along the handle, the pulling claw is used for moving in a direction close to or far away from the front baffle plate, and the pulling claw hooks the front baffle plate when moving below the front baffle plate.

Furthermore, the heating wrench also comprises a locking component which is connected with the pulling claw and used for locking and fixing the pulling claw relative to the handle.

Further, the temperature difference method dismouting device of preceding baffle still includes elastic support mechanism, be equipped with on the base and be used for supporting fixedly the screens of turbine disc, go towards on the base the mounting hole has been seted up to one side of screens, elastic support mechanism is including locating supporting spring and butt in the mounting hole supporting spring and with mounting hole rotatable coupling's support frame, the support frame includes the horizontal support arm that extends along the horizontal direction, the support frame is used for relatively the mounting hole rotates to the below of preceding baffle or breaks away from preceding baffle to pass through when rotating to the below of preceding baffle supporting spring elastic support preceding baffle.

Furthermore, the device for disassembling and assembling the front baffle by the temperature difference method further comprises a pressing sleeve, a guide rod is arranged at the top end of the cooling shaft, the pressing sleeve is sleeved on the guide rod, and the pressing sleeve is used for abutting against the top surface of the front baffle and moving along the guide rod under the action of external force to press the front baffle downwards.

The invention has the following beneficial effects:

in the temperature difference method dismounting device for the front baffle plate, the base supports and fixes the turbine disc, the cooling shaft continuously cools the turbine disc from the shaft hole position of the turbine disc, and the heating wrench continuously heats the front baffle plate, so that the outer diameter of the turbine disc is cooled down, and the inner diameter of the front baffle plate is heated and expanded. Secondly, because the handle and the hot gas distributor of spanner of heating are connected, the handle can drive hot gas distributor synchronous motion at the in-process that drives preceding baffle removal, make hot gas distributor can last to heat and keep warm the mounted position of preceding baffle, and the cooling shaft also can last to cool off the turbine disc, thereby make preceding baffle and turbine disc can both maintain preset temperature at whole dismouting in-process, guarantee that the dismouting is smooth and easy, effectively promote the assembly precision, avoid producing extrusion deformation between the part and appear wearing and tearing even, thereby ensure the stable performance of part.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a top view of a thermal method dismounting device for a front baffle according to an embodiment of the present invention;

fig. 2 isbase:Sub>A sectional view of the front fender temperature difference attachment/detachment apparatus shown in fig. 1 taken along the directionbase:Sub>A-base:Sub>A.

Illustration of the drawings:

1. a base; 11. clamping; 12. mounting holes; 2. a cooling mechanism; 21. a refrigerator; 22. cooling the shaft; 221. the cooling channels are communicated; 222. a cooling hole; 2221. a first cooling hole; 2222. a second cooling hole; 23. a guide bar; 24. a first blower; 3. a heating and dismounting mechanism; 31. a heater; 32. heating the wrench; 321. a hot gas distributor; 322. a handle; 323. pulling out and disassembling the claw; 324. a locking assembly; 33. an annular tube; 34. a pipe connector; 35. a bleed pipe; 36. a second blower; 4. an elastic support mechanism; 41. a support spring; 42. a support frame; 421. a horizontal support arm; 5. pressing a sleeve; 6. positioning pins; 7. and (5) positioning the blocks.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Fig. 1 and fig. 2 collectively show a temperature difference method dismounting device for a front baffle, which is provided by an embodiment of the present invention, and is used in assembly work of an aircraft engine, specifically, used for dismounting the front baffle on a turbine disc, and capable of maintaining both the turbine disc and the front baffle at a preset temperature during dismounting work, thereby realizing temperature difference method assembly, ensuring smooth assembly, ensuring safety, and improving assembly accuracy.

Referring to fig. 1 and 2, the front bezel mounting/dismounting device using a temperature difference method includes a base 1, a cooling mechanism 2, and a heating/dismounting mechanism 3, wherein the cooling mechanism 2 and the heating/dismounting mechanism 3 are respectively disposed on the base 1. The base 1 is provided with a clamping position 11 for supporting and fixing the turbine disc 100. The cooling mechanism 2 includes a refrigerator 21 and a cooling shaft 22, the cooling shaft 22 is mounted on the base 1 and is used for being inserted into a central shaft hole of the turbine disc 100, a cooling channel 221 connected with the refrigerator 21 is arranged inside the cooling shaft 22, a plurality of cooling holes 222 are distributed on the periphery of the cooling shaft 22, and the plurality of cooling holes 222 are respectively arranged towards different positions of the turbine disc 100 and are all communicated with the cooling channel 221. The dismouting mechanism of warming 3 includes heater 31 and spanner 32 of warming, the spanner 32 of warming include hot gas distributor 321 and with the handle 322 that hot gas distributor 321 is connected, hot gas distributor 321 with heater 31 is connected and is used for encircleing the periphery setting of preceding baffle 200, a plurality of heating holes have been laid along its circumference to hot gas distributor 321, handle 322 is used for supporting lean on preceding baffle 200 and drive preceding baffle 200 is relative the turbine disc 100 removes.

Specifically, the refrigerator 21 serves to prepare and deliver cold air into the cooling passage 221 of the cooling shaft 22, thereby injecting the cold air toward different positions of the turbine disk 100 through the plurality of cooling holes 222, respectively, to lower the overall temperature of the turbine disk 100. The heater 31 is used to prepare hot air and deliver the hot air into the hot air distributor 321, so that the hot air is respectively injected toward different positions of the front baffle 200 through a plurality of hot air holes on the hot air distributor 321, thereby increasing the overall temperature of the front baffle 200. Therefore, in the apparatus for mounting and dismounting the front baffle by using the temperature difference method, the base 1 supports and fixes the turbine disc 100, the cooling shaft 22 continuously cools the turbine disc 100 from the shaft hole position of the turbine disc 100, and the heating wrench 32 continuously heats the front baffle 200, so that the outer diameter of the turbine disc 100 is cooled down and the inner diameter of the front baffle 200 is heated and expanded, compared with a method of heating or cooling only one part, the assembling clearance of the front baffle 200 relative to the turbine disc 100 can be effectively increased without heating the part to a higher temperature or cooling the part to a lower temperature, the safety of the mounting and dismounting operation is ensured, the problems of scalding, frostbite and the like of an operator are avoided, and the cooling shaft 22 and the heating wrench 32 are independently arranged, so that the cooling process and the heating process cannot interfere with each other. Secondly, because the handle 322 and the hot gas distributor 321 of spanner 32 that heats are connected, the handle 322 drives the in-process that preceding baffle 200 removed can drive hot gas distributor 321 synchronous motion makes hot gas distributor 321 relatively baffle 200 keeps static relatively before, thereby can continuously be right the assembly position of preceding baffle 200 heats and keeps warm, and cooling shaft 22 also can continuously right turbine disc 100 cools off, and then makes preceding baffle 200 with turbine disc 100 can both maintain preset temperature in whole dismouting process, guarantees that the dismouting is smooth and easy, effectively promotes the assembly precision, avoids preceding baffle 200 with produce extrusion deformation or even wearing and tearing appear between the turbine disc 100, ensures the stable performance of part.

As shown in fig. 2, the cooling shaft 22 includes a first segment for being inserted into the axial hole of the turbine disc 100 and a second segment disposed coaxially with the first segment for being inserted out of one end of the turbine disc 100 facing the front baffle 200, and the cooling channel 221 extends along the first segment to the second segment.

Preferably, the cooling holes 222 include a plurality of first cooling holes 2221 and a plurality of second cooling holes 2222, the plurality of first cooling holes 2221 are arranged on the first segment and around the outer circumference of the first segment, the plurality of second cooling holes 2222 are arranged on the second segment and around the outer circumference of the second segment, the first cooling holes 2221 are arranged towards the inner wall of the shaft hole of the turbine disc 100, and the second cooling holes 2222 are arranged towards the fitting structure on the turbine disc 100 for matching with the front baffle plate 200. The cooling shaft 22 cools the turbine disc 100 from the inside of the turbine disc 100 through the first cooling holes 2221, so that the overall temperature of the turbine disc 100 can be stably lowered, and then the assembly structure of the turbine disc 100 is cooled through the second cooling holes 2222, so that the assembly structure of the turbine disc 100 can be maintained in a low-temperature state meeting the assembly requirements, smooth assembly is ensured, and the cooling effect of the turbine disc 100 is effectively improved by optimizing the arrangement mode of the cooling holes 222.

More preferably, the first segment is provided with a plurality of rows of cooling hole groups at intervals along the axial direction thereof, a single row of cooling hole group includes a plurality of first cooling holes 2221 arranged along the circumferential direction of the first segment, and the first cooling holes 2221 in two adjacent rows of cooling hole groups are arranged along the axial direction of the first segment in a staggered manner, so as to avoid cold air from being concentrated in the same direction in the turbine disc 100, and thus uniform cooling is achieved.

More preferably, the first cooling holes 2221 in the multiple rows of cooling hole groups are arranged spirally along the axial direction of the first segment, that is, the first cooling holes 2221 in each row of cooling hole groups are rotated at a certain angle relative to the first cooling holes 2221 in the previous row of cooling hole groups along the circumferential direction of the first segment. This structure can make the cooling gas that first cooling hole 2221 in the multirow cooling hole group blew out join the back and be the heliciform and flow, makes cooling gas can evenly adhere to on the turbine disc 100, can also improve cooling gas's velocity of flow, effectively promote the cooling effect.

In fig. 1, the heating and disassembling mechanism 3 further comprises a ring pipe 33 and a plurality of pipe nipples 34, the ring pipe 33 is arranged around the front baffle 200 and the heater 31 is connected, the plurality of pipe nipples 34 are arranged on the ring pipe 33 at equal intervals along the circumference of the ring pipe 33, and the pipe nipples 34 are connected to the hot gas distributor 321 and are used for guiding the hot gas in the ring pipe 33 into the hot gas distributor 321. High-temperature gas of heater 31 output gets into earlier evenly fill in the annular pipe 33 follows again annular pipe 33's circumference different positions is leading-in simultaneously in the steam distributor 321, make the steam evenly distributed of steam distributor 321 makes a plurality of heating holes on the steam distributor 321 can be simultaneously and stably spout high-temperature gas, guarantee that the heating is even.

Preferably, the warming disassembly and assembly mechanism 3 further comprises a bleed air pipe 35, a first end of the bleed air pipe 35 is connected with a heat dissipation port of the refrigerator 21, and a second end of the bleed air pipe 35 is connected with an air inlet port of the heater 31. The air-entraining pipe 35 is used for guiding high-temperature gas discharged during heat dissipation of the refrigerator 21 into the heater 31, so that the refrigerator 21 and the heater 31 cooperate to operate, heating treatment of the heater 31 is facilitated, load of the heater 31 is reduced, and heating temperature can reach design requirements.

Further, the cooling mechanism 2 further comprises a first blower 24 connected with an air inlet of the refrigerator 21, the heating and disassembling mechanism 3 further comprises a second blower 36 arranged on the air guide pipe 35, the refrigerator 21 conveys air through the first blower 24, and the heating and disassembling mechanism 3 conveys air through the second blower 36 to ensure sufficient air inlet.

As shown in fig. 2, the warming wrench 32 further includes a pulling claw 323, the pulling claw 323 is sleeved on the handle 322 and is configured to move along the handle 322, the handle 322 is radially extended along the front baffle 200, so that the pulling claw 323 can move in a direction close to or away from the front baffle 200, the pulling claw 323 is configured to move below the front baffle 200 and hook the front baffle 200, so that when the handle 322 is lifted up, the front baffle 200 can be pulled out upwards by the pulling claw 323, and the detachment operation of the front baffle 200 is achieved. Next, since the removal claw 323 is provided movably with respect to the handle 322, it can be moved away from the front bezel 200, and interference with the movement of the warming wrench 32 can be avoided.

Further, the warming wrench 32 further comprises a locking assembly 324 connected with the removal claw 323, wherein the locking assembly 324 is used for locking and fixing the removal claw 323 relative to the handle 322.

Further, at least a section of the handle 322 is provided with an external thread, and a position-limiting flange is provided on the handle 322. The locking assembly 324 comprises a locking nut which is sleeved on the handle 322 and is in threaded connection with the handle 322, the limiting flange is used for blocking the first end of the pulling claw 323, the locking nut is used for blocking the second end of the pulling claw 323, and the pulling claw 323 can be clamped and fixed on the limiting flange by spirally adjusting the position of the locking nut, so that the positioning and fixing of the pulling claw 323 are realized.

Further, the front bezel dismounting device by using the temperature difference method further comprises an elastic supporting mechanism 4, a mounting hole 12 is formed in one side of the base 1 facing the clamping position 11, the elastic supporting mechanism 4 comprises a supporting spring 41 and a supporting frame 42, the supporting spring 41 is arranged in the mounting hole 12, the supporting frame 42 abuts against one end, close to the opening of the mounting hole 12, of the supporting spring 41 and is rotatably connected with the mounting hole 12, the supporting frame 42 comprises a horizontal supporting arm 431 extending along the horizontal direction, and the supporting frame 42 is used for rotating below the front bezel 200 relative to the mounting hole 12 or separating from the front bezel 200 and elastically supporting the front bezel 200 through the supporting spring 41 when rotating below the front bezel 200. The front baffle 200 is temporarily supported by the elastic support mechanism 4 before the front baffle 200 is assembled, and the front baffle 200 can be driven to displace upwards and reset by the support spring 41 when the heating wrench 32 removes the downward pressure, so that the front baffle 200 can be conveniently installed and positioned.

Furthermore, the device for dismounting and mounting the front baffle by the temperature difference method further comprises a pressing sleeve 5, a guide rod 23 is arranged at the top end of the cooling shaft 22, the pressing sleeve 5 is sleeved on the guide rod 23, and the pressing sleeve 5 is used for abutting against the top surface of the front baffle 200 and moving along the guide rod 23 under the action of external force to press the front baffle 200 downwards.

The disassembly and assembly process of the temperature difference method disassembly and assembly device of the front baffle is as follows: the front baffle 200 is temporarily supported by the elastic supporting mechanism 4, the front baffle 200 is pressed downwards by the heating wrench 32 to be attached to the turbine disc 100, then the front baffle 200 is rotated to enable the assembling structures of the front baffle 200 and the turbine disc 100 to be arranged right opposite to each other, the axial acting force of the heating wrench 32 is slowly cancelled, the front baffle 200 is enabled to rise under the elastic force action of the elastic supporting mechanism 4, finally, the pressing sleeve 5 is pressed downwards by a driving device such as an oil pump, and the front baffle 200 is pressed in place by the pressing sleeve 5, so that the assembling operation is completed, and the positioning and assembling processes are convenient and fast.

Further, the device for dismounting and mounting the front baffle by using the temperature difference method further comprises a positioning pin 6 and a positioning block 7, wherein the positioning pin 6 is used for being sequentially inserted into pin holes preset in the front baffle 200 and the turbine disc 100, so that the positioning connection of the front baffle 200 relative to the turbine disc 100 is realized. The positioning block 7 is used for being cushioned between the front baffle 200 and the turbine disc 100, so that a fixed gap is kept between the front baffle 200 and the turbine disc 100 during assembly, and the front baffle 200 is convenient to mount and position.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A temperature difference method dismounting device of a front baffle is used for dismounting a front baffle (200) on a turbine disc (100), and is characterized by comprising a base (1), a cooling mechanism (2) and a heating dismounting mechanism (3) which are respectively arranged on the base (1);

the base (1) is used for supporting a fixed turbine disc (100);

the cooling mechanism (2) comprises a refrigerating machine (21) and a cooling shaft (22), the cooling shaft (22) is installed on the base (1) and used for being arranged in a shaft hole of the turbine disc (100) in a penetrating mode, a cooling channel (221) connected with the refrigerating machine (21) is arranged inside the cooling shaft (22), and a plurality of cooling holes (222) facing different positions of the turbine disc (100) and communicated with the cooling channel (221) are distributed in the periphery of the cooling shaft (22);

the heating disassembly and assembly mechanism (3) comprises a heater (31) and a heating wrench (32), the heating wrench (32) comprises a hot air distributor (321) and a handle (322) connected with the hot air distributor (321), the hot air distributor (321) is connected with the heater (31) and used for surrounding the periphery of the front baffle plate (200), a plurality of heating holes are distributed in the hot air distributor (321) along the circumferential direction of the hot air distributor, and the handle (322) is used for abutting against the front baffle plate (200) and driving the front baffle plate (200) to move relative to the turbine disc (100).

2. The front baffle temperature differential dismounting device according to claim 1, wherein the cooling shaft (22) comprises a first segment and a second segment, the first segment is used for being arranged in a shaft hole of the turbine disc (100) in a penetrating mode, and the second segment is used for being arranged out of one end, facing the front baffle (200), of the turbine disc (100) in a penetrating mode;

the cooling holes (222) comprise first cooling holes (2221) distributed on the first section and second cooling holes (2222) distributed on the second section, the first cooling holes (2221) are arranged towards the inner wall of the shaft hole of the turbine disc (100), and the second cooling holes (2222) are arranged towards the assembling structure which is used for being matched with the front baffle plate (200) and arranged on the turbine disc (100).

3. The device for dismounting the front baffle according to the temperature difference method of the claim 2, characterized in that the first segment is provided with a plurality of rows of cooling hole groups at intervals along the axial direction, the cooling hole groups comprise a plurality of first cooling holes (2221) arranged along the circumferential direction of the first segment, and the first cooling holes (2221) in two adjacent rows of cooling hole groups are arranged along the axial direction of the first segment in a staggered way.

4. The apparatus for thermally disassembling and assembling a front bezel according to claim 3, wherein the first cooling holes (2221) in the plurality of rows of cooling hole groups are arranged spirally in an axial direction of the first segment.

5. The front bezel temperature differential dismounting device according to claim 1, wherein said warming dismounting mechanism (3) further comprises a ring pipe (33) connected to said heater (31) and a plurality of pipe nipples (34) arranged on said ring pipe (33) at intervals along a circumference of said ring pipe (33), said pipe nipples (34) being connected to said hot gas distributor (321) and serving to guide the hot gas inside said ring pipe (33) into said hot gas distributor (321).

6. The device for the disassembly and assembly of the front bezel by means of the temperature difference method according to claim 1, characterized in that said heating and disassembly and assembly means (3) further comprise a bleed air pipe (35), a first end of said bleed air pipe (35) being connected to a heat sink of said refrigerator (21), a second end of said bleed air pipe (35) being connected to an air inlet of said heater (31).

7. The front bezel disassembling and assembling device according to claim 1, wherein the heating wrench (32) further comprises a disassembling claw (323) sleeved on the handle (322) and moving along the handle (322), the disassembling claw (323) is used for moving in a direction approaching to or departing from the front bezel (200) and hooking and pulling the front bezel (200) when moving below the front bezel (200).

8. The front baffle temperature difference method dismounting device according to claim 7, wherein the heating wrench (32) further comprises a locking assembly (324) connected with the dismounting claw (323) and used for locking and fixing the dismounting claw (323) relative to the handle (322).

9. The device for dismounting the front baffle according to the temperature difference method of claim 1, wherein the device for dismounting the front baffle further comprises an elastic support mechanism (4), a clamping position (11) for supporting and fixing the turbine disc (100) is arranged on the base (1), a mounting hole (12) is formed in one side of the base (1) facing the clamping position (11), the elastic support mechanism (4) comprises a support spring (41) arranged in the mounting hole (12) and a support frame (42) abutted to the support spring (41) and rotatably connected with the mounting hole (12), the support frame (42) comprises a horizontal support arm (421) extending along the horizontal direction, and the support frame (42) is used for rotating to the lower side of the front baffle (200) relative to the mounting hole (12) or separating from the front baffle (200) and elastically supporting the front baffle (200) through the support spring (41) when rotating to the lower side of the front baffle (200).

10. The front baffle temperature difference method dismounting device according to claim 1, further comprising a pressing sleeve (5), wherein a guide rod (23) is arranged at the top end of the cooling shaft (22), the pressing sleeve (5) is sleeved on the guide rod (23), and the pressing sleeve (5) is used for abutting against the top surface of the front baffle (200) and moving along the guide rod (23) to press the front baffle (200) downwards under the action of external force.