Chassis docking guide device and usage method

Abstract

This invention discloses a casing docking guide device and its usage method, which is applied to a casing. The casing includes a first casing and a second casing. The first casing has a first mounting hole, and the second casing has a second mounting hole. The casing docking guide device passes through the first and second mounting holes to guide and align the first and second casings. The casing docking guide device includes a guide shaft and a support frame, with the support frame rotatably connected to the guide shaft. The support frame has an unfolded state and a folded state. When the support frame is in the unfolded state, it forms an angle with the guide shaft and abuts against the first casing to fix the guide shaft. When the support frame is in the folded state, it retracts into the guide shaft, and both the support frame and the guide shaft can pass through the first and second mounting holes. This achieves reliable installation and fixation through the casing docking guide device itself. After casing docking is completed, the casing docking guide device can be directly removed from the first and second mounting holes.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, specifically to a casing docking guide device and its usage method. Background Technology

[0002] An aero-engine consists of four main parts: the fan unit, the core engine unit, the low-pressure turbine unit, and the external accessories and piping unit. The core engine unit is further divided into several sub-units, such as the compressor unit, the combustion chamber unit, and the high-pressure turbine unit. There are numerous requirements for casing docking between the various units and during the assembly of the high-pressure compressor.

[0003] The clearance between parts in the housings is extremely small. To improve docking efficiency and avoid scratches during the docking process, a guide tool must be used. The two housings to be assembled are generally fastened together with bolts and nuts. The mounting holes on both sides of the housings are plain holes of the same diameter, which makes it difficult to install and fix the guide shaft.

[0004] In existing technologies, the mounting structure is typically fixed by utilizing other auxiliary features of the casing, such as additional mounting holes, mounting edges, or upper and lower flanges of the casing, and then the guide shaft is fixed by the mounting structure. However, this increases the installation process of the mounting structure and guide shaft, making assembly and disassembly cumbersome and reducing efficiency. Furthermore, when the casing lacks other auxiliary features, it is impossible to fix the guide shaft. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art that require the use of other auxiliary features of the casing to install and fix the mounting structure for installing the guide shaft, and to provide a casing docking guide device and a method of use.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A casing docking guide device is applied to a casing, the casing including a first casing and a second casing, the first casing having a first mounting hole, and the second casing having a second mounting hole, the casing docking guide device passing through the first mounting hole and the second mounting hole to guide and align the first casing and the second casing, the casing docking guide device comprising:

[0008] Guide shaft;

[0009] A support frame, which is rotatably connected to the guide shaft;

[0010] The support frame has an unfolded state and a folded state. When the support frame is in the unfolded state, the support frame forms an angle with the guide shaft, and the support frame abuts against the first housing or the second housing to fix the guide shaft. When the support frame is in the folded state, the support frame is folded into the guide shaft, and the support frame and the guide shaft can pass through the first mounting hole and the second mounting hole.

[0011] In this design, the support frame is in an unfolded state before the casing is docked. By using the support frame unfolded relative to the guide shaft to abut against the first casing, the guide shaft can be fixed to the first casing. This achieves reliable installation and fixation solely through the casing docking guide device itself, without relying on other features of the casing or other mounting structures. After the casing is docked, the support frame is in a folded state, i.e., the support frame is folded into the guide shaft. At this time, the casing docking guide device can be directly removed from the first and second mounting holes, allowing for convenient and quick disassembly. This enables the removal of the casing docking guide device without affecting the docking process, thus improving assembly efficiency.

[0012] Preferably, the support frame includes at least two support sides, which are rotatably connected to the guide shaft, and at least one end of the support side is configured to extend out of the guide shaft and abut against the first housing or the second housing.

[0013] In this design, two supporting edges are deployed relative to the guide shaft and abut against the first housing, which improves the stability of the guide shaft fixation.

[0014] Preferably, the guide shaft is provided with a receiving groove to allow the support frame to retract into the guide shaft. When the support frame is in the unfolded state, the support side has a first end located in the receiving groove. The first end has a limiting surface. In the unfolded state, the limiting surface abuts against the wall of the receiving groove to limit the continuous unfolding of the support frame.

[0015] In this design, the receiving groove ensures that the size of the guide shaft is not affected, thereby ensuring the alignment effect during the casing docking process; the wall of the receiving groove prevents the support edge from expanding further, avoiding the situation where the support edge expands too much and becomes unstable.

[0016] Preferably, when the support frame is in the unfolded state, the support edge has a second end located outside the receiving groove, the second end having a support surface that fits against the first housing or the second housing, the support surface being parallel to the limiting surface.

[0017] In this design, the second end is in surface-to-surface contact with the first housing, which improves the stability of the connection between the support edge and the first housing. The parallelism between the support surface and the limiting surface ensures that the support edge will not wobble when deployed, thus guaranteeing its stability.

[0018] Preferably, during the process of the support frame changing from an unfolded state to a folded state, the plurality of support edges have abutting surfaces that abut against each other, and the abutting surfaces transition smoothly between each other.

[0019] In this solution, the above-mentioned structural form is adopted so that when the support edges are retracted, the multiple support edges will not interfere with each other and will not affect the inward rotation of the support edges.

[0020] Preferably, the contact surface is arc-shaped.

[0021] Preferably, the casing docking guide includes a first connector that passes through the guide shaft and the support frame to rotatably connect the guide shaft and the support frame.

[0022] Preferably, the casing docking guide device further includes an elastic element fixedly connected to the guide shaft, the elastic element applying a force to the support frame in a direction away from the guide shaft.

[0023] In this solution, the support frame can be opened by elastic elements when it is not subjected to any other external forces, thus realizing the self-opening of the support frame. There is no need to manually operate the support frame to be in the unfolded state, which improves the assembly efficiency.

[0024] Preferably, the cross-section of the elastic element is V-shaped.

[0025] Preferably, the support frame is configured such that when the support frame is subjected to a radial force along the guide axis, the support frame changes from the unfolded state to the folded state.

[0026] In this design, as the second housing gradually comes into contact with the first housing along the guide shaft, the support frame can be pressed back through the second mounting hole of the second housing. After the first and second housings are fully in contact, the support frame is completely retracted into the guide shaft and can be directly removed, thus achieving automatic retraction of the support frame without manual operation, further improving assembly efficiency.

[0027] Preferably, the guide shaft includes a threaded section, the housing docking guide includes a fastener, the first housing has a first surface facing the second housing and a second surface opposite to the first surface, the support abuts against the first surface, the threaded section extends from the second surface in a direction away from the second surface, and the fastener engages with the threaded section and fits against the second surface so that the support fits against the first surface.

[0028] In this design, fasteners and support frames press the first housing against the middle, thus fixing the housing docking guide device on the first housing. After being tightened by the fasteners, the housing docking guide device can still be fixed in place after being subjected to axial and radial misalignment forces, ensuring that the housing does not misalign during the guiding process.

[0029] Preferably, the first housing includes a first flange, the first flange having the first mounting hole, the support frame abutting against one surface of the first flange, and the fastener cooperating with the guide shaft and fitting against the other surface of the first flange to fit the support frame against the first flange.

[0030] In this solution, the above-mentioned structural form is adopted, and the guiding alignment of the casing can be achieved by using one of the flanges of the first casing.

[0031] A method of using the casing docking guide device as described above, the method comprising the following steps:

[0032] S1. Securely install the casing docking guide device onto the first casing;

[0033] S2. Pass the guide shaft through the second mounting hole of the second housing;

[0034] S3. Move the second housing along the axial direction of the guide shaft so that the second housing and the first housing gradually approach each other;

[0035] S4. When the first casing and the second casing are fully abutted, remove the casing docking guide device.

[0036] Preferably, the first housing includes a first flange having a first mounting hole, the guide shaft has a threaded section extending from the first flange in a direction away from the first flange, the housing docking guide includes fasteners, and step S1 includes:

[0037] S11. Pass the guide shaft through the first mounting hole of the first flange;

[0038] S12. Place the support frame against the side of the first flange closest to the second casing;

[0039] S13. From the side of the first flange away from the second housing, install the fastener onto the threaded section and make the fastener fit against the first flange.

[0040] In this scheme, before the casing is docked, the support frame is in the unfolded state and abuts against the first flange. The fasteners are tightened, and the fasteners and support frame press the first flange against the middle, thus fixing the casing docking guide device on the first casing.

[0041] Preferably, in step S3, when the second housing moves to the position of the support frame, the fastener is first loosened, and then the second housing continues to move so that the first housing and the second housing gradually move closer together.

[0042] In this solution, the above-mentioned sequence of steps ensures that the support frame can be smoothly retracted after being subjected to the force of the second housing.

[0043] Preferably, in step S4, after the first casing and the second casing are fully abutted, the first casing and the second casing are first fixedly installed using fasteners, and then the casing docking guide device is removed.

[0044] In this solution, the above-mentioned sequence of steps is adopted to avoid misalignment caused by displacement of the first and second casings after the casing docking guide device is removed, which helps to ensure the smooth completion of casing docking.

[0045] The positive and progressive effects of this invention are as follows:

[0046] Before the casing is docked, the support frame is in an unfolded state. By using the support frame unfolded relative to the guide shaft to abut against the first casing, the guide shaft can be fixed to the first casing. This achieves reliable installation and fixation solely through the casing docking guide device itself, without relying on other features of the casing or other mounting structures. After the casing is docked, the support frame is in a folded state, i.e., the support frame is folded into the guide shaft. At this time, the casing docking guide device can be directly removed from the first mounting hole and the second mounting hole, which can be conveniently and quickly disassembled. This allows the casing docking guide device to be removed without affecting the docking process, thus improving assembly efficiency. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the initial docking of the first and second casings according to a preferred embodiment of the present invention.

[0048] Figure 2 This is a schematic diagram showing the first and second casings of a preferred embodiment of the present invention after docking.

[0049] Figure 3 This is an exploded view of the casing docking guide device according to a preferred embodiment of the present invention.

[0050] Figure 4 This is a schematic diagram of the guide shaft according to a preferred embodiment of the present invention.

[0051] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the guide shaft in the diagram.

[0052] Figure 6This is a schematic diagram of the support edge structure according to a preferred embodiment of the present invention.

[0053] Figure 7 This is a flowchart illustrating a preferred embodiment of the method of use of the present invention.

[0054] Explanation of reference numerals in the attached figures

[0055] Casing docking guide device 100

[0056] First Casing 1

[0057] First mounting hole 11

[0058] First surface 12

[0059] Second surface 13

[0060] Second Casing 2

[0061] Second mounting hole 21

[0062] Guide shaft 3

[0063] Receiving tank 31

[0064] Thread section 32

[0065] Support frame 4

[0066] Support edge 41

[0067] Limiting surface 411

[0068] Support surface 412

[0069] Surface 413

[0070] First end 414

[0071] Second end 415

[0072] First connector 5

[0073] Elastic element 6

[0074] Fastener 7

[0075] Second connector 8 Detailed Implementation

[0076] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0077] like Figures 1-6As shown, this embodiment discloses a casing docking guide device 100, which is applied to a casing. The casing includes a first casing 1 and a second casing 2. The first casing 1 is provided with a first mounting hole 11, and the second casing 2 is provided with a second mounting hole 21. The casing docking guide device 100 passes through the first mounting hole 11 and the second mounting hole 21 to guide and align the first casing 1 and the second casing 2. The casing docking guide device 100 includes a guide shaft 3 and a support frame 4. The support frame 4 is rotatably connected to the guide shaft 3. The support frame 4 has an unfolded state and a folded state. When the support frame 4 is in the unfolded state, the support frame 4 forms an angle with the guide shaft 3, and the support frame 4 abuts against the first casing 1 to fix the guide shaft 3. When the support frame 4 is in the folded state, the support frame 4 is folded into the guide shaft 3, and the support frame 4 and the guide shaft 3 can pass through the first mounting hole 11 and the second mounting hole 21.

[0078] Before the casing is docked, the support frame 4 is in the unfolded state. The support frame 4, which is unfolded relative to the guide shaft 3, abuts against the first casing 1, and the guide shaft 3 can be fixed to the first casing 1. This achieves reliable installation and fixation by the casing docking guide device 100 itself without relying on other features of the casing or other installation structures. After the casing is docked, the support frame 4 is in the folded state, that is, the support frame 4 is folded into the guide shaft 3. At this time, the casing docking guide device 100 can be directly removed from the first mounting hole 11 and the second mounting hole 21. This allows for convenient and quick disassembly, and the casing docking guide device 100 can be removed without affecting the docking process, thus improving assembly efficiency.

[0079] In this embodiment, the support frame 4 abuts against the side of the first housing 1 facing the second housing 2. The support frame 4 is configured to change from an unfolded state to a folded state when it is subjected to a radial force along the guide shaft 3. Thus, when the second housing 2 gradually comes into contact with the first housing 1 along the guide shaft 3, the support frame 4 can be pressed back through the second mounting hole 21 of the second housing 2. After the first housing 1 and the second housing 2 are completely in contact, the support frame 4 is completely retracted into the guide shaft 3 and can be directly removed. This achieves automatic retraction of the support frame 4 without manual operation, further improving assembly efficiency.

[0080] Specifically, the support frame 4 includes at least two support edges 41, which are rotatably connected to the guide shaft 3. One end of each support edge 41 is configured to extend out of the guide shaft 3 and abut against the first housing 1. By having the two support edges 41 unfold relative to the guide shaft 3 and abut against the first housing 1, the stability of the guide shaft 3 is improved. In the unfolded state, the distance between the ends of the two support edges 41 extending out of the guide shaft 3 is greater than the diameter of the first mounting hole 11. In other embodiments, the support frame 4 may include three or more support edges 41, which are arranged circumferentially along the guide shaft 3.

[0081] The casing docking guide device 100 includes a first connector 5, which passes through the guide shaft 3 and the support frame 4 to rotatably connect the guide shaft 3 and the support frame 4. Specifically, the first connector 5 can be a rotating shaft, pin, or other structure that enables the support frame 4 to be rotatably connected to the guide shaft 3.

[0082] In this embodiment, the first connector 5 is disposed at one end of the support edge 41, and the other end of the support edge 41 can extend out of the guide shaft 3 and abut against the first housing 1. This will increase the rotation range of the support edge 41, and at the same time, it will not occupy too much space inside the guide shaft 3 when rotating.

[0083] In other embodiments, the first connector 5 may also be disposed in the middle of the support edge 41. Depending on different needs, different ends of the support edge 41 can extend out of the guide shaft 3. That is, when the first connector 5 is disposed in the middle of the support edge 41, the end of the support edge 41 near the first housing 1 can extend out of the guide shaft 3 and abut against the first housing 1 to fix the guide shaft 3 to the first housing 1; or the end of the support edge 41 near the second housing 2 can extend out of the guide shaft 3 and abut against the second housing 2 to fix the guide shaft 3 to the second housing 2.

[0084] To ensure that the dimensions of the guide shaft 3 are not affected, the guide shaft 3 is provided with a receiving groove 31 so that the support frame 4 can be retracted into the guide shaft 3, thereby ensuring the alignment effect during the casing docking process. If the dimensions of the guide shaft 3 are reduced in order to allow the support frame 4 to extend directly out of the first mounting hole 11 and the second mounting hole 21 after retraction, the alignment effect of the casing will be affected.

[0085] When the support frame 4 is in the unfolded state, the support edge 41 has a first end 414 located in the receiving groove 31. The first end 414 has a limiting surface 411. In the unfolded state, the limiting surface 411 abuts against the wall of the receiving groove 31, thereby using the wall of the receiving groove 31 to prevent the support edge 41 from continuing to unfold, thus avoiding the situation where the support edge 41 unfolds too much and becomes unstable.

[0086] When the support frame 4 is in the unfolded state, the support edge 41 has a second end 415 located outside the receiving groove 31. The second end 415 has a support surface 412 that fits against the first housing 1, and the support surface 412 is parallel to the limiting surface 411. The second end 415 and the first housing 1 are in surface-to-surface contact, which helps to improve the stability of the connection between the support edge 41 and the first housing 1. The parallelism between the support surface 412 and the limiting surface 411 ensures that the support edge 41 will not wobble when unfolded, thus contributing to the stability of the support edge 41.

[0087] During the transition of the support frame 4 from the unfolded state to the folded state, multiple support edges 41 have mutually abutting surfaces 413, with a smooth transition between the abutting surfaces 413. This ensures that when the support edges 41 are folded up, the multiple support edges 41 do not interfere with each other and do not affect the inward rotation of the support edges 41. Specifically, the abutting surfaces 413 are arc-shaped.

[0088] In this embodiment, the casing docking guide device 100 further includes an elastic element 6. The elastic element 6 is fixedly connected to the guide shaft and located between the two support edges 41. The elastic element 6 applies a force to the support frame 4 in a direction away from the guide shaft, so that the support frame 4 can naturally open the two support edges 41 without other external forces, realizing the self-opening of the support frame 4 without manual operation to put the support frame 4 in the unfolded state, thus improving assembly efficiency. At the same time, it also realizes that the support frame 4 will naturally retract under pressure after being subjected to the force of the second casing 2, without manual operation. Specifically, the elastic element 6 can be a spring, a bent leaf spring, a straight leaf spring, etc. In this embodiment, the cross-section of the elastic element 6 is V-shaped, and the two sides apply forces to the two support edges 41 respectively to open the two support edges 41.

[0089] The guiding device includes a second connector 8, which passes through the guide shaft 3 and the elastic member 6 to fix the guide shaft 3 and the elastic member 6. Specifically, the second connector 8 can be a bolt, screw, stud, or other structure that can fix the guide shaft 3 and the elastic member 6.

[0090] The guide shaft 3 includes a threaded section 32, and the casing docking guide device 100 includes a fastener 7. The first casing 1 has a first surface 12 facing the second casing 2 and a second surface 13 opposite to the first surface 12. The support frame 4 abuts against the first surface 12. The threaded section 32 extends from the second surface 13 in a direction away from the second surface 13. The fastener 7 mates with the threaded section 32 and fits against the second surface 13, so that the support frame 4 fits against the first surface 12. Before casing docking, the guide shaft 3 passes through the first mounting hole 11, the support frame 4 is in an unfolded state and abuts against the first surface 12, and the fastener 7 is tightened. The fastener 7 and the support frame 4 press the first casing 1 against the middle, thus fixing the casing docking guide device 100 on the first casing 1. Furthermore, after being tightened by the fastener 7, the casing docking guide device 100 can remain fixed in place after being subjected to axial and radial misalignment forces, ensuring that the casing does not misalign during the guiding process. Specifically, the fastener 7 can be a bolt, stud, screw, etc.

[0091] Specifically, the first housing 1 includes a first flange with a first mounting hole 11. A support frame 4 abuts against one surface of the first flange. A fastener 7 cooperates with the guide shaft 3 and fits against the other surface of the first flange to fit the support frame 4 against the first flange. Thus, the guide alignment of the housing can be achieved using one of the flanges of the first housing 1.

[0092] like Figure 7 As shown, this embodiment also discloses a method of using the casing docking guide device 100 as described above. The method includes the following steps: S1, fixing the casing docking guide device 100 on the first casing 1; S2, passing the guide shaft 3 through the second mounting hole 21 of the second casing 2; S3, moving the second casing 2 along the axial direction of the guide shaft 3 so that the second casing 2 and the first casing 1 gradually approach each other; S4, when the first casing 1 and the second casing 2 are completely in contact, removing the casing docking guide device 100.

[0093] Step S1 includes: S11, passing the guide shaft 3 through the first mounting hole 11 of the first flange; S12, abutting the support frame 4 against the side of the first flange near the second housing 2; S13, from the side of the first flange away from the second housing 2, installing the fastener 7 onto the threaded section 32, and ensuring the fastener 7 fits against the first flange. Before housing docking, the support frame 4 is in the unfolded state and abuts against the first flange. Tightening the fastener 7 presses the first flange between the fastener 7 and the support frame 4, thus fixing the housing docking guide device 100 onto the first housing 1.

[0094] To ensure the stability of the guiding process, multiple casing docking guiding devices 100 can be installed according to step S1.

[0095] In step S3, when the second housing 2 moves to the position of the support frame 4, the fastener 7 is loosened first, and then the second housing 2 continues to move so that the first housing 1 and the second housing 2 gradually approach each other, thereby ensuring that the support frame 4 can be smoothly retracted after being subjected to the force of the second housing 2. Alternatively, the fastener 7 can be loosened after the second housing 2 and the first housing 1 are initially connected.

[0096] In step S4, after the first housing 1 and the second housing 2 are fully attached, the first housing 1 and the second housing 2 are first fixedly installed with fasteners, and then the housing docking guide device 100 is taken out. This avoids the situation where the first housing 1 and the second housing 2 are misaligned after the housing docking guide device 100 is taken out, which helps to ensure the smooth completion of housing docking.

[0097] This embodiment describes the case where the casing docking guide device 100 is fixedly installed on the first casing 1. In other embodiments, the casing docking guide device 100 can also be installed on the second casing 2, and the docking guide process is the same.

[0098] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A casing docking guide device, characterized in that, It is applied to a casing, the casing including a first casing and a second casing, the first casing having a first mounting hole, the second casing having a second mounting hole, the casing docking guide passing through the first mounting hole and the second mounting hole to guide and align the first casing and the second casing, the casing docking guide comprising: Guide shaft; A support frame, which is rotatably connected to the guide shaft; The support frame has an unfolded state and a folded state. When the support frame is in the unfolded state, the support frame forms an angle with the guide shaft, and the support frame abuts against the first housing or the second housing to fix the guide shaft. When the support frame is in the folded state, the support frame is folded into the guide shaft, and the support frame and the guide shaft can pass through the first mounting hole and the second mounting hole. The guide shaft includes a threaded section, the housing docking guide device includes a fastener, the first housing has a first surface facing the second housing and a second surface opposite to the first surface, the support frame abuts against the first surface, the threaded section extends from the second surface in a direction away from the second surface, and the fastener cooperates with the threaded section and fits against the second surface so that the support frame fits against the first surface.

2. The casing docking guide device as described in claim 1, characterized in that, The support frame includes at least two support sides, which are rotatably connected to the guide shaft. At least one end of the support side is configured to extend out of the guide shaft and abut against the first housing or the second housing.

3. The casing docking guide device as described in claim 2, characterized in that, The guide shaft is provided with a receiving groove so that the support frame can be retracted into the guide shaft. When the support frame is in the unfolded state, the support side has a first end located in the receiving groove. The first end has a limiting surface. In the unfolded state, the limiting surface abuts against the wall of the receiving groove to limit the continuous unfolding of the support frame.

4. The casing docking guide device as described in claim 3, characterized in that, When the support frame is in the unfolded state, the support edge has a second end located outside the receiving groove, the second end has a support surface that fits into the first casing or the second casing, and the support surface is parallel to the limiting surface.

5. The casing docking guide device as described in claim 2, characterized in that, During the process of the support frame changing from an unfolded state to a folded state, the multiple support edges have abutting surfaces that abut against each other, and the abutting surfaces transition smoothly between each other.

6. The casing docking guide device as described in claim 5, characterized in that, The contact surface is arc-shaped.

7. The casing docking guide device as described in claim 1, characterized in that, The casing docking guide includes a first connector that passes through the guide shaft and the support frame to rotatably connect the guide shaft and the support frame.

8. The casing docking guide device as described in claim 1, characterized in that, The casing docking guide device also includes an elastic element, which is fixedly connected to the guide shaft and applies a force to the support frame in a direction away from the guide shaft.

9. The casing docking guide device as described in claim 8, characterized in that, The cross-section of the elastic element is V-shaped.

10. The casing docking guide device as claimed in claim 1, characterized in that, The support frame is configured such that when the support frame is subjected to a radial force along the guide axis, the support frame changes from the unfolded state to the folded state.

11. The casing docking guide device as claimed in claim 1, characterized in that, The first housing includes a first flange with a first mounting hole. The support frame abuts against one surface of the first flange, and the fastener cooperates with the guide shaft and fits against the other surface of the first flange to fit the support frame against the first flange.

12. A method of using the casing docking guide device as described in any one of claims 1-11, characterized in that, The method of use includes the following steps: S1. Securely install the casing docking guide device onto the first casing; S2. Pass the guide shaft through the second mounting hole of the second housing; S3. Move the second housing along the axial direction of the guide shaft so that the second housing and the first housing gradually approach each other; S4. When the first casing and the second casing are fully abutted, remove the casing docking guide device.

13. The method of use as described in claim 12, characterized in that, The first housing includes a first flange having a first mounting hole, the guide shaft has a threaded section extending from the first flange in a direction away from the first flange, the housing docking guide includes fasteners, and step S1 includes: S11. Pass the guide shaft through the first mounting hole of the first flange; S12. Place the support frame against the side of the first flange closest to the second casing; S13. From the side of the first flange away from the second housing, install the fastener onto the threaded section and make the fastener fit against the first flange.

14. The method of use as described in claim 13, characterized in that, In step S3, when the second housing moves to the position of the support frame, the fastener is first loosened, and then the second housing continues to move so that the first housing and the second housing gradually move closer together.

15. The method of use as described in claim 12, characterized in that, In step S4, after the first casing and the second casing are fully attached, the first casing and the second casing are first fixedly installed with fasteners, and then the casing docking guide device is taken out.

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