Dismounting device and auxiliary maintenance system

Abstract

The utility model discloses a dismounting device and an auxiliary maintenance system, and after a crane in the dismounting device hoists and transfers a fan-shaped section, an upper frame and a lower frame in the fan-shaped section connected by a plurality of pin shafts need to be separated. The lifting appliance of the crane is then connected with a cylinder base of a telescopic cylinder, the telescopic cylinder comprises a supporting sleeve which coaxially sleeves a telescopic rod, one end of the supporting sleeve is connected with the cylinder base, the supporting sleeve is provided with a through hole penetrating through the supporting sleeve in the radial direction, and the other end of the supporting sleeve can be used for abutting against a fan-shaped section and is matched with a plurality of disassembling heads which are connected with pin shafts in a one-to-one correspondence mode in a disassembling device. The dismounting heads are provided with stretching-in parts capable of stretching into the supporting sleeves, the stretching-in parts are connected with the telescopic rods through pull rods, and the stretching-in parts and the pull rods are connected in an inserted mode through connecting columns penetrating through the through holes of the supporting sleeves. The supporting sleeve of the telescopic cylinder abuts against the fan-shaped section, and the telescopic rod retracts to pull the pin shaft to be separated from the upper frame and the lower frame. Different pin shafts are separated from the position of the lifting telescopic cylinder of the crane, so that the separation efficiency of the upper frame and the lower frame is improved, and the maintenance efficiency of the fan-shaped section is improved.

Description

Technical Field

[0001] This application belongs to the technical field of disassembly devices and auxiliary maintenance systems, and particularly relates to a disassembly device and an auxiliary maintenance system. Background Art

[0002] The segment is a core component of the continuous casting machine. When the continuous casting machine needs to be maintained, the segment also needs to be maintained. The segment includes upper and lower frames connected by a plurality of pins at different heights, as well as other related structures provided on the upper and lower frames. During maintenance, it is necessary to separate the upper and lower frames of the segment to maintain the upper and lower frames and related structures.

[0003] Currently, due to the relatively large mass of the upper and lower frames and the relatively tight connection through the pins, the separation of the upper and lower frames is mainly achieved by manually cutting the pins. However, this separation method is time-consuming and inefficient, which will affect the overall maintenance efficiency of the segment. Utility Model Content

[0004] This application aims to at least solve to some extent the technical problem that the maintenance efficiency of the segment is affected. For this purpose, this application provides a disassembly device and an auxiliary maintenance system.

[0005] The embodiments of this application provide one.

[0006] Beneficial effects provided according to one or more embodiments of this application:

[0007] When the fan-shaped segment needs to be overhauled, the fan-shaped segment can be separated from the frame of the continuous casting machine, and the fan-shaped segment can be hoisted and transferred to an appropriate position or platform using a crane in the disassembly device. After the position of the fan-shaped segment is supported, it is necessary to separate the multiple pins of the upper and lower frames of the fan-shaped segment to overhaul the upper and lower frames separately. If the upper and lower frames connected by multiple pins need to be separated, the crane's hoist can be connected to the cylinder seat of the telescopic cylinder, and the crane can control the lifting of the hoist to lift the telescopic cylinder and disassemble the pins at different heights. The telescopic cylinder includes a support sleeve coaxially sleeved on the telescopic rod and connected to the cylinder seat at one end. The support sleeve has a through hole radially penetrating the support sleeve and the other end can be used to abut the fan-shaped segment. The disassembly heads in the disassembly device are connected to the pin shaft in a one-to-one correspondence. The disassembly heads are provided with an insertion portion that can be inserted into the support sleeve. The disassembly head can facilitate the connection between the pin shaft and the telescopic rod. The insertion portion of the disassembly head can be inserted into the support sleeve as an extension structure of the pin shaft, providing a fulcrum for the pin shaft. The insertion portion inserted into the support sleeve is connected to the telescopic rod through a pull rod, and the insertion portion and the pull rod are connected by a connecting column inserted through the through hole of the support sleeve. The telescopic cylinder is lifted by a hoist, and the other end of the support sleeve abuts against the fan-shaped segment, and the telescopic rod is connected to the pin shaft through the pull rod and the disassembly head. The telescopic cylinder is positioned, and the telescopic cylinder drives the telescopic rod to extend and retract. The support sleeve provides a reaction for the telescopic cylinder. The telescopic rod can pull the pin shaft into the support sleeve through the pull rod and the disassembly head to complete the disassembly of the pin shaft. After the pin shaft is separated from the fan-shaped segment, the crane controls the telescopic cylinder to be lowered, the connecting column is pulled out to separate the pull rod from the insertion part of the disassembly head, and the pin shaft is separated from the support sleeve. Each pin shaft is connected to the disassembly head, and the position of the telescopic cylinder can be adjusted by lifting the crane to achieve the separation of the pin shafts at different heights and positions, and the separation of the upper and lower frames in the fan-shaped segment is completed. The efficiency of separating the upper and lower frames in the fan-shaped segment is high, which is conducive to the subsequent maintenance steps to improve the maintenance efficiency. The pull rod and the telescopic rod are detachably connected, which is convenient for adjusting the position of the pull rod to achieve connection with the disassembly head on different pin shafts, which is also conducive to improving the separation efficiency of the upper and lower frames, and also conducive to improving the maintenance efficiency of the fan-shaped segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 A schematic structural diagram of a disassembly device in some embodiments or certain embodiments of the present application is shown.

[0010] Figure 2 A schematic diagram of the use status of a disassembly device in some embodiments or certain embodiments of the present application is shown.

[0011] Figure 3 Shows a schematic structural diagram of a support sleeve in some embodiments or certain embodiments of the present application.

[0012] Figure 4 Shows a schematic structural diagram of a disassembly head in some embodiments or certain embodiments of the present application

[0013] Figure 5 Shows a schematic structural diagram of a pull rod in some embodiments or certain embodiments of the present application.

[0014] Figure 6 Shows a simplified schematic structural diagram of a crane in some embodiments or certain embodiments of the present application.

[0015] Figure 7 Shows a schematic structural diagram of an auxiliary maintenance system in some embodiments or certain embodiments of the present application.

[0016] Explanation of reference numerals: 1, crane; 11, lifting appliance; 12, support; 121, running track; 13, overhead crane; 14, sliding member; 2, telescopic cylinder; 21, cylinder seat; 22, telescopic rod; 23, support sleeve; 231, through hole; 232, annular flange; 2321, rabbet; 3, disassembly head; 31, extending portion; 311, positioning through groove; 32, connecting portion; 4, pull rod; 41, insertion portion; 42, adjusting portion; 411, jack; 5, connecting column; 6, disassembly platform; 10, maintenance platform; 100, pin shaft; 200, upper frame; 300, lower frame. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0018] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.

[0019] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0021] In the related art, the connection between the upper and lower frames of the segment of the continuous casting machine is realized by connecting the lifting cylinder plug of the upper frame and the connecting rod of the lower frame together through four pins with a diameter of Φ110. Therefore, when disassembling and overhauling the upper and lower frames of the segment, multiple pins need to be disassembled. Manually disassembling these pins with larger specifications and tight connections easily affects the subsequent overhaul efficiency of the segment. The embodiment of the present application provides a disassembling device and an auxiliary overhaul system, which can at least solve the above technical problems to a certain extent.

[0022] The present application will be described below with reference to the accompanying drawings:

[0023] Figure 1 FIG. shows the structural schematic diagram of a disassembling device in some embodiments or certain embodiments of the present application. Figure 2 FIG. shows the schematic diagram of the use state of a disassembling device in some embodiments or certain embodiments of the present application. Refer to Figure 1 and Figure 2 The present application provides a disassembling device for disassembling multiple pins 100 of a segment, including:

[0024] A crane 1 is provided with a liftable sling 11.

[0025] A telescopic cylinder 2, the cylinder base 21 of which is connected to the sling 11. The telescopic cylinder 2 includes a support sleeve 23 coaxially sleeved on the telescopic rod 22 and connected to the cylinder base 21 at one end. The support sleeve 23 has a through hole 231 radially penetrating itself and is used to abut against the segment at the other end.

[0026] A plurality of disassembly heads 3, which are used to be connected to the pin shafts 100 in a one-to-one correspondence, and each is provided with an insertion portion 31 that can extend into the support sleeve 23.

[0027] A pull rod 4 and a connecting column 5. The pull rod 4 is detachably connected to the telescopic rod 22. The connecting column 5 passes through the through hole 231 and is inserted into the pull rod 4 and the insertion portion 31 to connect the pull rod 4 and the disassembly head 3.

[0028] When the fan-shaped segment needs to be repaired, the fan-shaped segment can be separated from the frame of the continuous casting machine, and the crane 1 in the disassembly device can be used to hoist and transfer the fan-shaped segment to an appropriate position or platform. After the position of the fan-shaped segment is supported, it is necessary to separate the multiple pins 100 of the upper frame 200 and the lower frame 300 of the fan-shaped segment to inspect the upper and lower frames separately. If the upper frame 200 and the lower frame 300 connected by the multiple pins 100 need to be separated, the lifting device 11 of the crane 1 can be connected to the cylinder seat 21 of the telescopic cylinder 2, and the crane 1 can control the lifting device 11 to lift and lower the telescopic cylinder 2, and the pins 100 of different heights can be disassembled. The telescopic cylinder 2 includes a support sleeve 23 which is coaxially sleeved on the telescopic rod 22 and one end of which is connected to the cylinder seat 21. The support sleeve 23 has a through hole 231 radially penetrating through itself and the other end can be used to abut the fan-shaped segment, and cooperates with a plurality of disassembly heads 3 in the disassembly device which are connected to the pin shaft 100 one by one. The disassembly heads 3 are all provided with an insertion portion 31 which can be inserted into the support sleeve 23. The disassembly heads 3 can facilitate the connection between the pin shaft 100 and the telescopic rod 22. The insertion portion 31 of the disassembly head 3 can be inserted into the support sleeve 23 as an extension structure of the pin shaft 100, providing a fulcrum for the pin shaft 100. The insertion portion 31 inserted into the support sleeve 23 is connected to the telescopic rod 22 through the pull rod 4, and the insertion portion 31 and the pull rod 4 are connected by inserting a connecting column 5 which passes through the through hole 231 of the support sleeve 23. The telescopic cylinder 2 is lifted by the lifting device 11, the other end of the support sleeve 23 is abutted against the fan-shaped segment, and the telescopic rod 22 is connected to the pin 100 through the pull rod 4 and the disassembly head 3, the telescopic cylinder 2 is positioned, the telescopic cylinder 2 drives the telescopic rod 22 to extend and retract, the support sleeve 23 provides a reaction for the telescopic cylinder 2, and the telescopic rod 22 can pull the pin 100 into the support sleeve 23 through the pull rod 4 and the disassembly head 3, completing the disassembly of the pin 100. After the pin 100 is separated from the fan-shaped segment, the crane 1 controls the telescopic cylinder 2 to be lowered, and the connecting column 5 is pulled out to separate the pull rod 4 and the extension portion 31 of the disassembly head 3, and the pin 100 is separated from the support sleeve 23. Each pin shaft 100 is connected to the disassembly head 3. By lifting and adjusting the position of the telescopic cylinder 2 through the crane 1, the pin shafts 100 at different heights and positions can be separated, and the upper frame 200 and the lower frame 300 in the fan-shaped segment are separated. The efficiency of separating the upper frame 200 and the lower frame 300 in the fan-shaped segment is high, which is beneficial to the subsequent maintenance steps to improve the maintenance efficiency. The pull rod 4 is detachably connected to the telescopic rod 22, which is convenient for adjusting the position of the pull rod 4 to achieve connection with the disassembly head 3 on different pin shafts 100, which is also beneficial to improving the separation efficiency of the upper frame 200 and the lower frame 300, and also beneficial to improving the maintenance efficiency of the fan-shaped segment.

[0029] And for the segment with a relatively large specification, the upper frame 200 and the lower frame 300 of the segment are disassembled and separated in cooperation with the crane 1. After disassembly, the pin shafts 100 can be reused, which also reduces the maintenance cost of the segment. The multiple disassembly heads 3 are arranged in one-to-one correspondence with the multiple pin shafts 100, which also facilitates adjusting the position of each disassembly head 3 relative to the pin shaft 100, so that the positions of each disassembly head 3 are relatively consistent. Then, by only adjusting the lifting of the telescopic cylinder 2, the disassembly heads 3 at different positions can be connected to disassemble the pin shafts 100.

[0030] In some embodiments, the support sleeve 23 has two opposite through holes 231, and both ends of the connecting column 5 extend out of the two through holes 231 respectively. The through holes 231 are waist-shaped holes whose length direction extends along the axial direction of the support sleeve 23.

[0031] The support sleeve 23 has two opposite through holes 231, and both ends of the connecting column 5 extend out of the two through holes 231 respectively, which facilitates the disassembly and assembly of the connecting column 5, so as to realize the connection and separation between the pull rod 4 and the disassembly head 3, which is beneficial to improving the separation of the multiple pin shafts 100 between the upper frame 200 and the lower frame 300, so as to improve the maintenance efficiency of the segment. The through holes 231 are waist-shaped holes whose length direction extends along the axis of the support sleeve 23. On the one hand, the space of the waist-shaped hole is relatively large, and the connection situation between the connecting column 5, the pull rod 4 and the extending part 31 of the disassembly head 3 can be judged through the waist-shaped hole. On the other hand, the waist-shaped hole can play a role in supporting and guiding the connecting column 5, making the disassembly process of the pin shaft 100 more stable.

[0032] Figure 3 The structural schematic diagram of a support sleeve in some embodiments of the present application is shown. Refer to Figure 3 In some embodiments, annular flanges 232 coaxial with each other can be provided at both ends of the support sleeve 23. One of the annular flanges 232 can be provided with a rabbet 2321. The annular flange 232 provided with the rabbet 2321 can be matched with the protrusion of the cylinder block 21 of the telescopic cylinder 2 through the rabbet 2321. This is beneficial to realizing the rapid positioning and cooperation between the telescopic cylinder 2 and the support sleeve 23, and can also reduce the movement of the support sleeve 23 relative to the cylinder block 21 in its own radial direction.

[0033] In some embodiments, the disassembly device further includes a disassembly platform 6 spaced from the crane 1 and used for placing the segment.

[0034] The disassembly platform 6 can provide an operation space for the separation between the upper frame 200 and the lower frame 300 of the segment, and is also convenient for cooperating with the crane 1.

[0035] Figure 4 The structural schematic diagram of a disassembly head in some embodiments of the present application is shown. Refer to Figure 4, in some embodiments, a positioning through groove 311 is provided on the extending portion 31 of the disassembly head 3, and the pull rod 4 is provided with an insertion portion 41 for inserting into the positioning through groove 311.

[0036] The positioning through groove 311 on the extending portion 31 of the disassembly head 3 cooperates with the insertion portion 41 of the pull rod 4, which can achieve rapid positioning of the disassembly head 3 and the pull rod 4, facilitating the connection column 5 to connect the disassembly head 3 and the pull rod 4 again.

[0037] In some embodiments, the connecting column 5 is connected to the extending portion 31 and the insertion portion 41 located within the positioning through groove 311, facilitating the connection between the pull rod 4 and the insertion portion 41.

[0038] In some embodiments, both the extending portion 31 and the insertion portion 41 are plate-shaped and are provided with insertion holes 411 for cooperating with the connecting column 5, which is convenient for preparation and also for realizing the connection and cooperation with the connecting column 5.

[0039] In some embodiments, the extending portion 31 can be U-shaped plate-shaped and the inner peripheral wall forms the positioning through groove 311. The opening of the extending portion 31 can be connected to the pin shaft 100 away from the pin shaft 100. The disassembly head 3 can also include a plate-shaped connecting portion 32. The connecting portion 32 is fixed to the side of the extending portion 31 away from the opening. The connecting portion 32 and the extending portion 31 can be integrally formed. The side of the connecting portion 32 away from the extending portion 31 is fixed to one end of the pin shaft 100, facilitating the connection between the disassembly head 3 and the pin shaft 100, so as to facilitate the subsequent disassembly work of the pin shaft 100.

[0040] In some embodiments, the disassembly head 3 and one end of the pin shaft 100 can be welded. For example, after the segment has been transferred to the disassembly platform 6, a plurality of disassembly heads 3 are connected to a plurality of pin shafts 100 one by one, and the connecting portion 32 of each disassembly head 3 can be horizontally arranged, and the insertion hole 411 can penetrate the connecting portion 32 along the normal direction of the plate surface of the connecting portion 32, facilitating the connection between the disassembly head 3 and the pull rod 4, and the position of the telescopic cylinder 2 is convenient to adjust, which is beneficial to improving the overall maintenance efficiency.

[0041] Figure 5 The structural schematic diagram of a pull rod in some embodiments or certain embodiments of the present application is shown. Refer to Figure 5 , in some embodiments, the pull rod 4 includes:

[0042] An adjusting portion 42, the adjusting portion 42 is in the shape of a cylinder with one end closed and coaxially sleeved on one end of the telescopic rod 22, and the adjusting portion 42 is in threaded cooperation with the telescopic rod 22.

[0043] An insertion portion 41, which is connected to the closed end of the adjusting portion 42 and cooperates with the connecting column 5.

[0044] The adjusting portion 42 of the pull rod 4 is a tubular shape with one end closed, and is coaxially sleeved on one end of the telescopic rod 22. The adjusting portion 42 is in threaded cooperation with the telescopic rod 22. By rotating the adjusting portion 42, the position of the adjusting portion 42 relative to the telescopic rod 22 can be changed. Adjusting the position of the adjusting portion 42 adjusts the position of the insertion portion 41. By rotating the adjusting portion 42 until the position of the insertion portion 41 is appropriate, it is convenient to connect the insertion portion 41 to the disassembly head 3.

[0045] In some embodiments, the insertion portion 41 can be in the shape of a U-shaped plate or a C-shaped plate. The insertion hole 411 on the insertion portion 41 that cooperates with the connecting column 5 can penetrate through both sides of the insertion portion 41. This facilitates the cooperation with the disassembly head 3 and the connecting column 5.

[0046] Figure 6 The simplified structural schematic diagram of a crane in some embodiments or certain embodiments of the present application is shown. Refer to Figure 6 , in some embodiments or certain embodiments, the crane 1 includes:

[0047] A bracket 12 and at least two running tracks 121 spaced apart from each other on the bracket 12, and a trolley 13 or a sliding member 14 movably disposed on the corresponding running track 121. At least one lifting appliance 11 is connected to the trolley 13 or the sliding member 14.

[0048] With the above structure of the crane 1, structures such as the upper frame 200 and the lower frame 300 can be transferred by the crane 1, and it can be carried out below the bracket 12 or the running track 121 of the crane 1. The crane 1 transfers structures such as the upper frame 200 and the lower frame 300 relatively quickly, which is beneficial to improving the maintenance efficiency.

[0049] In some embodiments, a trolley 13 and a sliding member 14 can be movably disposed on the two running tracks 121 of the crane 1 respectively. The sliding member 14 can be a moving frame that moves on the running track 121 through rollers, etc. The lifting appliance 11 can be set as an electric hoist or a hook. The electric hoist and the hook are connected to the trolley 13 or the sliding member 14 through a steel wire rope, etc. This is convenient for the transfer and position adjustment of different weights and structures.

[0050] Figure 7 The structural schematic diagram of an auxiliary maintenance system in some embodiments or certain embodiments of the present application is shown. Refer to Figure 7 It can be known that based on the same inventive concept, the present application provides an auxiliary maintenance system, including:

[0051] The disassembly device as described above, and the crane 1 includes at least two lifting appliances 11 spaced apart from each other.

[0052] At least two maintenance platforms 10 spaced apart from the crane 1.

[0053] The structure of the disassembling device and its corresponding technical effects will not be elaborated here. With the addition of the maintenance platform 10, after the upper frame 200 and the lower frame 300 are separated on the disassembling platform 6, the upper frame 200 and the lower frame 300 can be transferred to the maintenance platform 10 by the crane 1, and then relevant maintenance or reassembly work can be carried out on the maintenance platform 10, which is also beneficial to improving the overall maintenance efficiency of the segment.

[0054] In some or certain embodiments, the disassembling platform in the disassembling device and at least two maintenance platforms 10 can be spaced apart along the same horizontal direction, and the brackets 12 of the crane 1 can be distributed on both sides of the disassembling platform 6 and at least one maintenance platform 10. The occupied space is small and the transfer and maintenance efficiency is high.

[0055] It should be noted that in this application, coaxial means that the relevant structural axes extend in the same direction. The plate surface is the surface with the largest area corresponding to the plate-like structure.

[0056] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0057] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0058] Although the embodiments of this application have been shown and described, those of ordinary skill in the art can understand that: various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of this application, and the scope of this application is defined by the claims and their equivalents.

Claims

1. A disassembly device, characterized in that: Multiple pins for disassembling segments, including: A crane, provided with a lifting device that can be raised or lowered; A telescopic cylinder, a cylinder seat connected to the sling, the telescopic cylinder comprising a support sleeve coaxially sleeved on the telescopic rod and connected to the cylinder seat at one end, the support sleeve having a through hole radially penetrating the support sleeve and the other end being used to abut against the sector segment; A plurality of disassembly heads, used for correspondingly connecting with the pin shafts one by one, and each of which is provided with an insertion portion that can be inserted into the support sleeve; A pull rod and a connecting column, wherein the pull rod and the telescopic rod are detachably connected, and the connecting column passes through the through hole and is inserted into the pull rod and the extending portion to connect the pull rod and the disassembly head.

2. The disassembly device according to claim 1, characterized in that: The support sleeve has two opposite through holes, and the two ends of the connecting column extend out of the two through holes respectively. The through holes are waist-shaped holes whose length direction extends along the axial direction of the support sleeve.

3. The disassembly device according to claim 1, characterized in that: The support sleeve is tightly connected to the cylinder seat and is matched with the stopper.

4. The disassembly device according to any one of claims 1 to 3, characterized in that: The disassembling device further includes a disassembling platform which is spaced apart from the crane and is used for placing the sector.

5. The disassembly device according to any one of claims 1 to 3, characterized in that: The extending portion is provided with a positioning through slot, and the pull rod is provided with an inserting portion for inserting into the positioning through slot.

6. The disassembly device according to claim 5, characterized in that: The connecting post is connected to the extending portion and to the inserting portion located in the positioning through slot.

7. The disassembly device according to claim 5, characterized in that: The extending portion and the inserting portion are both plate-shaped and are both provided with a plug hole for cooperating with the connecting column.

8. The disassembly device according to any one of claims 1 to 3, characterized in that: The pull rod comprises: An adjusting part, which is in the shape of a tube with one end closed and is coaxially sleeved on one end of the telescopic rod, and the adjusting part is threadedly matched with the telescopic rod; The inserting portion is connected to the closed end of the adjusting portion and cooperates with the connecting column.

9. The disassembly device according to any one of claims 1 to 3, characterized in that: The crane comprises: A bracket and at least two running tracks which are spaced apart from each other on the bracket, and a crane or a sliding member which is movably arranged on the corresponding running tracks, and at least one of the hangers is connected to the crane or the sliding member.

10. An auxiliary maintenance system, characterized in that: include: The disassembly device according to any one of claims 1 to 9, wherein the crane comprises at least two of the spreaders spaced apart from each other; At least two maintenance platforms are spaced apart from the crane.

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