Axial flow casing positioning bush assembly and method

Abstract

The application discloses an axial flow casing positioning bushing assembling and disassembling device which is used for inserting or separating a bushing from a casing hole, and comprises an operating mechanism, a fixing mechanism and an auxiliary assembling mechanism. The operating mechanism comprises a screw rod and a positioning part arranged at one end of the screw rod. The positioning part comprises a matching part for being sleeved in the bushing and a supporting part for abutting against any end of the bushing. The matching part and the supporting part are coaxially arranged. A guide column is fixedly connected to one end of the matching part away from the screw rod. The fixing mechanism is used for being fixed with a casing flange. The screw rod is connected with the fixing mechanism through threads. The auxiliary assembling mechanism is detachably connected with the fixing mechanism. The auxiliary assembling mechanism comprises a guide pin. The guide pin is adapted to the casing hole and coaxial with the matching part. A guide cavity is formed in the guide pin. The matching part is driven to move axially by rotating the screw rod, so that the guide column is inserted into the guide cavity and the bushing is inserted into the casing hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aircraft engine mounting device, in particular to an axial flow casing positioning bush assembly and disassembly device. Furthermore, the present application also relates to an axial flow casing positioning bush assembly and disassembly method comprising the above axial flow casing positioning bush assembly and disassembly device. BACKGROUND

[0002] As Figure 1 and Figure 2 described, the axial flow casing is a combination of two half casings, the flanges on the sides of the two half casings are provided with corresponding openings, the two corresponding openings are combined to form a casing hole, and the two corresponding flanges are combined to form a casing flange. The two half casings are connected by a bush passing through the casing hole, and the bush is in interference fit with the casing hole. Due to the complex shape of the casing and the large number of various special-shaped bosses, it is difficult to find a position on the half casing to fix the clamp. The only method is to use a copper rod to knock the positioning bush to realize the combination and disassembly of the two half casings. Since there is no corresponding stop centering on the two half casings, the two half casings are easily misaligned during assembly, and it is difficult to assemble and disassemble the positioning bush. When knocking, the joint surface is easy to be scratched. SUMMARY

[0003] The present application provides an axial flow casing positioning bush assembly and disassembly device to solve the technical problem of difficult assembly and disassembly of the positioning bush on the two half casings.

[0004] According to one aspect of the present application, an axial flow casing positioning bush assembly and disassembly device is provided for inserting or separating the bush from the casing hole, comprising an operating mechanism, a fixing mechanism and an auxiliary assembly mechanism. The operating mechanism comprises a screw rod and a positioning part provided at one end of the screw rod. The positioning part comprises a matching part for being sleeved in the bush and a supporting part for abutting against either end of the bush. The matching part and the supporting part are coaxially arranged. The supporting part is also used for gap fit with the casing hole. A guide column is fixedly connected to the end of the matching part away from the screw rod. The radial dimension of the guide column is smaller than that of the matching part, and the guide column is coaxially arranged with the matching part. The fixing mechanism is used for fixing the casing flange of the axial flow casing. The screw rod is connected with the fixing mechanism through threads. The auxiliary assembly mechanism is detachably connected with the fixing mechanism. The auxiliary assembly mechanism comprises a guide pin for extending into the casing hole. The guide pin is adapted to the casing hole and coaxially arranged with the matching part. A guide cavity is provided on the guide pin and coaxially arranged with the guide pin.

[0005] Further, the fixing mechanism comprises a clamp and a first screw for fixing the clamp on the casing flange, the clamp comprises a connecting part and two clamping parts, the two clamping parts are correspondingly arranged on the two sides of the connecting part, and the two clamping parts are spaced apart to form an avoiding area for the positioning one end, a clamping groove for clamping the casing flange is arranged on the clamping part, and the first screw is threadedly connected with the clamping part and extends into the clamping groove to abut against the casing flange.

[0006] Further, the auxiliary assembly mechanism further comprises a containing shell with a containing cavity, the containing shell is detachably connected between the two clamping parts, the guide pin penetrates through the containing shell, the containing cavity comprises a first cavity wall and a second cavity wall which are oppositely arranged along the axial direction of the guide pin, the first end of the guide pin extends out of the first cavity wall to form a guide part which is connected with the guide column and is adapted to the casing hole, the guide cavity is located on the side of the guide part which is towards the guide column, the second end of the guide pin extends out of the second cavity wall to form a pulling part, and a limiting ring is further fixed on the guide pin and abuts against the first cavity wall.

[0007] Further, the containing cavity is provided with an elastic member, the elastic member is sleeved on the guide pin, and the two ends of the elastic member abut against the limiting ring and the second cavity wall respectively.

[0008] Further, a guide inclined surface is arranged on the side of the guide part which is towards the guide column.

[0009] Further, a connecting flange is fixedly connected to the outer side wall of the containing shell, the connecting flange is detachably connected with the clamping part through a second screw, and the connecting flange is located on the side of the clamping part which is away from the connecting part.

[0010] Further, a supporting ring is detachably arranged on the supporting part, and the supporting ring is used for abutting against the flange surface of the bushing.

[0011] Further, a handle is detachably connected to the end of the screw rod which is away from the positioning part.

[0012] The application further provides an assembly method of the axial flow casing positioning bushing, the bushing is inserted into the casing hole through the assembly device of the axial flow casing positioning bushing, and the assembly method comprises the following steps:

[0013] The auxiliary assembly mechanism and the operating mechanism are assembled with the fixing mechanism respectively;

[0014] The guide pin is inserted into the casing hole for positioning, and then the fixing mechanism is fixedly connected with the casing flange, so that the matching part is coaxial with the casing hole.

[0015] sleeve into the matching part and make the shaft shoulder of the sleeve abut against the abutting part;

[0016] rotating the screw to push the matching part to move axially, drive the guide column to extend into the guide cavity, so that the sleeve enters the casing hole to push the guide pin to separate from the casing hole, and the sleeve moves to the point that the shaft shoulder of the sleeve completely abuts against the end surface of the casing flange, and the assembly of the sleeve is completed.

[0017] The application also provides a method for disassembling the positioning sleeve of the axial flow casing, which separates the sleeve from the casing hole through the assembly and disassembly device of the positioning sleeve of the axial flow casing.

[0018] assembling the operating mechanism and the fixing mechanism;

[0019] inserting the matching part into the end of the sleeve without the shaft shoulder and making the abutting part abut against the end of the sleeve without the shaft shoulder;

[0020] connecting the fixing mechanism and the casing flange fixedly;

[0021] rotating the screw to push the matching part to move axially, so that the abutting part pushes the sleeve to move axially and separate from the casing hole.

[0022] The application has the following beneficial effects:

[0023] In the assembly and disassembly device of the positioning sleeve of the axial flow casing, when the sleeve is assembled, the auxiliary assembly mechanism and the operating mechanism are assembled with the fixing mechanism respectively, specifically, the screw is connected with the positioning mechanism through threads, the auxiliary assembly mechanism is detachably connected with the fixing mechanism, then the guide pin is inserted into the casing hole where the sleeve needs to be installed to be positioned, the fixing mechanism is fixedly connected with the casing flange to ensure that the operating mechanism works stably, at this time, the matching part coaxial with the guide pin is also coaxial with the casing hole, then the sleeve is inserted into the matching part and the shaft shoulder of the sleeve abuts against the abutting part, finally, the matching part is pushed to move axially by rotating the screw, so that the guide column extends into the guide cavity, thereby ensuring that the matching part keeps coaxial with the casing hole when the matching part moves, at this time, the sleeve enters the casing hole and pushes the guide pin to separate from the casing hole, until the sleeve moves to the point that the shaft shoulder of the sleeve abuts against the end surface of the casing flange, and the assembly of the sleeve is completed. Through the above-mentioned auxiliary assembly device, the sleeve keeps coaxial with the casing hole when the sleeve moves, so that when the sleeve is installed, the sleeve can be assembled on the casing only by rotating the screw, and the assembly operation is simple and convenient, which avoids that the casing may be scratched by impact and knocking during the process of assembling the sleeve by knocking, and greatly reduces the risk of damaging the casing.

[0024] When the bushing is separated, the operating mechanism is assembled with the fixing mechanism, specifically, the screw rod is connected with the positioning mechanism through thread, then the matching part is inserted along the one end of the bushing without shaft shoulder, and the abutting part is abutted with the one end of the bushing without shaft shoulder, then the fixing mechanism is fixedly connected with the casing flange, finally the screw rod is rotated to push the matching part to move axially, so that the abutting part pushes the bushing to move axially, and the bushing is separated from the casing hole. The bushing is pushed out of the casing hole by the abutting part through the operation of the screw rod, and the separation of the bushing is simply, stably and efficiently completed, and the impact and scratch of the casing caused by knocking in the process of separating the bushing by knocking is avoided, so that the risk of damage of the casing is greatly reduced.

[0025] In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate embodiments of the application and assist in explaining the application. In the drawings:

[0027] Figure 1 is a structural schematic view of an axial flow casing in the prior art;

[0028] Figure 2 is a structural schematic view of an axial flow casing positioning bushing assembly and disassembly device in the preferred embodiment of the present application;

[0029] Figure 3 is a structural schematic view of an axial flow casing positioning bushing assembly and disassembly device combined with an auxiliary assembly mechanism in the preferred embodiment of the present application;

[0030] Figure 4 is an axial view of an axial flow casing positioning bushing assembly and disassembly device combined with an auxiliary assembly mechanism in the preferred embodiment of the present application;

[0031] Figure 5 is a structural schematic view of a fixing mechanism in the preferred embodiment of the present application;

[0032] Figure 6 is a structural schematic view of an auxiliary assembly mechanism in the preferred embodiment of the present application.

[0033] LEGEND

[0034] 100, axial flow casing; 101, casing flange; 102, casing hole;

[0035] 200, bushing; 201, shaft shoulder;

[0036] 300. Operating mechanism; 301. Screw; 302. Handle; 303. Positioning part; 304. Mating part; 305. Support part; 306. Guide column; 307. Support ring;

[0037] 400. Fixing mechanism; 401. Clamp; 402. Connecting part; 403. Clamping part; 404. Clamping groove; 405. Clearance area; 406. First screw;

[0038] 500. Auxiliary assembly mechanism; 501. Receiving shell; 502. Receiving cavity; 503. Guide pin; 504. Guide part; 505. Guide cavity; 506. Pulling part; 507. Limiting ring; 508. Elastic element; 509. Connecting flange; 510. Second screw. Detailed Implementation

[0039] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0040] like Figures 1-4 As shown, this embodiment of an axial flow casing positioning bushing assembly and disassembly device is used to insert or separate the bushing 200 into the casing hole 102. It includes an operating mechanism 300, a fixing mechanism 400, and an auxiliary assembly mechanism 500. The operating mechanism includes a screw 301 and a positioning part 303 disposed at one end of the screw 301. The positioning part 303 includes a mating part 304 for fitting inside the bushing 200 and a support part 305 for abutting against either end of the bushing 200. The mating part 304 and the support part 305 are coaxially arranged. The support part 305 is also used for clearance fitting with the casing hole 102. A guide post 306 is fixedly connected to the end of the mating part 304 away from the screw 301. The radial dimension of the guide post 306 is smaller than the radial dimension of the mating part 304, and the guide post 306 and the mating part 306 are... 04. Coaxial arrangement; the fixing mechanism 400 is used to fix with the casing flange 101 of the axial flow casing 100, and the screw 301 is threadedly connected to the fixing mechanism 400; the auxiliary assembly mechanism 500 is detachably connected to the fixing mechanism 400, and the auxiliary assembly mechanism 500 includes a guide pin 503 for extending into the casing hole 102. The guide pin 503 is adapted to the casing hole 102 and coaxially arranged with the mating part 304. The guide pin 503 has a guide cavity 505 that is adapted to the guide post 306 and coaxially arranged with the guide pin 503. By rotating the screw 301, the mating part 304 is driven to move axially, so that the guide post 306 extends into the guide cavity 505, and the bushing 200 enters the casing hole 102 and pushes the guide pin 503 out of the casing hole 102.

[0041] In the embodiment, the screw rod 301 is connected with the fixing mechanism 400 through thread connection, and the screw rod 301 can be separated from the fixing mechanism 400 by rotating the screw rod 301. The outer wall of the matching part 304 is attached to the inner wall of the bushing 200, so that the bushing 200 and the matching part 304 are coaxially arranged. The radius of the abutting part 305 is greater than the radius of the inner circle of the bushing 200 and less than or equal to the radius of the machine case hole 102. In this way, the abutting part 305 can form an abutting relationship with both ends of the bushing 200. At the same time, when the bushing 200 needs to be separated from the machine case hole 102, the abutting part 305 can extend into the machine case hole 102 to push the bushing 200 out of the machine case hole 102.

[0042] In the specific implementation, when the bushing 200 is assembled, the auxiliary assembly mechanism 500 and the operating mechanism 300 are assembled with the fixing mechanism 400 respectively. Specifically, the screw rod 301 is connected with the positioning mechanism through thread connection, and the auxiliary assembly mechanism 500 is detachably connected with the fixing mechanism 400. Then the guide pin 503 is inserted into the machine case hole 102 where the bushing 200 needs to be installed for positioning. Then the fixing mechanism 400 is fixedly connected with the machine case flange 101 to ensure that the operating mechanism 300 works stably. At this time, the matching part 304 coaxially arranged with the guide pin 503 is also coaxial with the machine case hole 102. Then the bushing 200 is sleeved into the matching part 304, and the shaft shoulder 201 of the bushing 200 abuts against the abutting part 305. Finally, the matching part 304 is moved along the axial direction by rotating the screw rod 301 to drive the guide column 306 to extend into the guide cavity 505, so as to ensure that the matching part 304 is coaxial with the machine case hole 102 during movement. At this time, the bushing 200 enters the machine case hole 102 and pushes the guide pin 503 to separate from the machine case hole 102, until the shaft shoulder 201 of the bushing 200 abuts against the end face of the machine case flange 101, and the assembly of the bushing 200 is completed. Through the above-mentioned auxiliary assembly device, the bushing 200 can be kept coaxial with the machine case hole 102 during movement, so that the bushing 200 can be assembled on the machine case only by rotating the screw rod 301 during installation. The assembly operation is simple and convenient, and the risk of damage to the machine case caused by impact and knocking during the process of assembling the bushing 200 by knocking is greatly reduced.

[0043] When the bushing 200 is separated, the operating mechanism 300 is assembled with the fixing mechanism 400, specifically, the screw rod 301 is connected with the positioning mechanism through screw connection, then the matching part 304 is inserted along the one end of the bushing 200 without the shaft shoulder 201, and the abutting part 305 is abutted with the one end of the bushing 200 without the shaft shoulder 201, then the fixing mechanism 400 is fixedly connected with the casing flange 101, finally the screw rod 301 is rotated to push the matching part 304 to move axially, so that the abutting part 305 pushes the bushing 200 to move axially, and the bushing 200 is separated from the casing hole 102. The bushing 200 is pushed out of the casing hole 102 by the abutting part 305 through the operation of the screw rod 301, and the separation of the bushing 200 is simply, stably and efficiently completed, and the impact and scratch of the casing caused by knocking in the process of separating the bushing 200 is avoided, and the risk of damage to the casing is greatly reduced.

[0044] Referring to Figure 5 The fixing mechanism 400 comprises a clamp 401 and a first screw 406 for fixing the clamp 401 on the casing flange 101, the clamp 401 comprises a connecting part 402 and two clamping parts 403, the two clamping parts 403 are correspondingly arranged on the two sides of the connecting part 402, and the two clamping parts 403 are spaced apart to form an avoiding area 405 for the positioning end, a clamping groove 404 for clamping the casing flange 101 is formed on the clamping part 403, and the first screw 406 is threadedly connected with the clamping part 403 and extends into the clamping groove 404 to abut against the casing flange 101.

[0045] In the embodiment, the first screw 406 is a knurled flat head screw, the connecting part 402 is provided with a threaded hole matched with the screw rod 301, the clamp 401 further comprises an elastic abutting plate, the connecting part 402 and the two clamping parts 403 are fixed on the elastic abutting plate, and the two clamping parts 403 are located on the two sides of the connecting part 402. The two clamping parts 403 are correspondingly arranged on the two sides of the connecting part 402 and are spaced apart to form the avoiding area 405 for the movement of the positioning part 303. Specifically, the screw rod 301 is rotated first to make the positioning part 303 move out of the space connected by the two clamping grooves 404, then the casing flange 101 is embedded in the clamping groove 404, the position of the clamp 401 is adjusted to make the positioning part 303 coaxial with the casing hole 102, then the first screw 406 is screwed to make the screw extend into the clamping groove 404 to abut against the casing flange 101, so that the clamp 401 is fixed on the casing flange 101, and the assembly or separation of the bushing 200 is completed by rotating the screw rod 301.

[0046] Referring to Figure 6The auxiliary assembling mechanism 500 further comprises an elastic member 508 and a containing shell 501 with a containing cavity 502, the containing shell 501 is detachably connected between the two clamping portions 403, the guide pin 503 penetrates the containing shell 501, the containing cavity 502 comprises a first cavity wall and a second cavity wall which are oppositely arranged along the axial direction of the guide pin 503, the first end of the guide pin 503 extends out of the first cavity wall to form a guide portion 504 which is connected with the guide column 306, the guide cavity 505 is located on the side of the guide portion 504 which is towards the guide column 306, the second end of the guide pin 503 extends out of the second cavity wall to form a pulling portion 506, a limiting ring 507 is further fixed on the guide pin 503, the limiting ring 507 abuts against the first cavity wall, the elastic member 508 is sleeved on the guide pin 503, and the two ends of the elastic member 508 respectively abut against the limiting ring 507 and the second cavity wall.

[0047] In the embodiment, the elastic member 508 is a compression spring, is sleeved on the guide pin 503 and located in the containing cavity 502, the two ends of the elastic member 508 respectively abut against the limiting ring 507 and the second cavity wall, the guide pin 503 penetrates the containing shell 501 and is slidably arranged on the containing shell 501, the first end of the guide pin 503 extends out of the containing shell 501 to form the guide portion 504 which is connected with the guide column 306, the guide cavity 505 is located on the side of the guide portion 504 which is towards the guide column 306, the second end of the guide pin 503 extends out of the containing shell 501 to form the pulling portion 506, since the guide portion 504 is coaxially arranged with the cooperating portion 304 and the guide pin 503 is coaxially arranged with the guide column 306, the guide pin 503 provides auxiliary guidance for the movement of the guide column 306, so that it can be ensured that the bushing 200 can be pressed into the cylinder hole 102 along the correct direction and position during assembly.

[0048] In actual implementation, when the bushing 200 needs to be assembled, the auxiliary assembly mechanism 500 is first fixed on the clamp 401, specifically, the accommodating shell 501 is detachably connected between the two clamping portions 403, then the pulling portion 506 is pulled to move the guide pin 503 towards the direction away from the guide column 306 and to the space outside the two-side clamping grooves 404, then the clamping portion 403 is assembled into the casing flange 101, the guide column 306 is coaxial with the casing hole 102, then the pulling portion 506 is loosened, the elastic member 508 pushes the limiting ring 507 to rebound to drive the guide portion 504 to move towards the guide column 306, at this time, the guide portion 504 extends into the casing hole 102, the first screw 406 is screwed to fix the clamp 401 on the casing flange 101, the bushing 200 to be assembled is sleeved on the matching portion 304, and the abutting portion 305 is abutted with the shaft shoulder 201 of the bushing 200, the screw is rotated to move the positioning portion 303, at this time, the guide column 306 partially extends into the guide cavity 505 to cooperate with the guide pin 503 to center, the screw 301 is continuously rotated to push the bushing 200 to move towards the casing hole 102, at this time, the bushing 200 pushes the guide pin 503 to fall off the casing hole 102, until the bushing 200 completely extends into the casing hole 102, at this time, the shaft shoulder 201 of the bushing 200 is completely abutted with the end surface of the casing flange 101. Since the guide column 306 cooperates with the guide pin 503 to center before the bushing 200 contacts the casing hole 102, the bushing 200 can be pressed into the casing hole 102 in the correct direction and position, thereby improving the assembly accuracy, preventing the bushing 200 from being difficult to be completely pressed into the casing hole 102 due to the failure to keep coaxial movement with the casing hole 102 when the bushing 200 is pressed into the casing hole 102, and reducing the difficulty of assembling the bushing 200.

[0049] Further, the guide portion 504 is adapted to the casing hole 102. In the embodiment, the guide portion 504 is adapted to the casing hole 102, so that when the guide portion 504 extends into the casing hole 102, the outer wall of the guide portion 504 is abutted with the hole wall of the casing hole 102, which enables the guide portion 504 to keep coaxial with the casing hole 102, thereby improving the accuracy of guiding the guide column 306.

[0050] Further, the side of the guide portion 504 towards the guide column 306 is provided with a guide inclined surface. The guide inclined surface is provided to guide the guide portion 504 when extending into the casing hole 102, thereby facilitating the assembly and positioning of the guide pin 503 and the casing hole 102.

[0051] Further, the outer wall of the accommodating shell 501 is fixedly connected with a connecting flange 509, the connecting flange 509 is detachably connected with the clamping portion 403 through a second screw 510, and the connecting flange 509 is located on the side of the clamping portion 403 away from the connecting portion 402.

[0052] In the embodiment, the outer side wall of the containing shell 501 is fixedly connected with a connecting flange 509, the connecting flange 509 is attached to the clamping part 403, and the clamping part 403 and the connecting flange 509 are detachably connected through the second screw 510, so that the containing shell 501 and the clamping part 403 are fixedly connected.

[0053] Further, the abutting ring 307 is detachably arranged on the abutting part 305, and the abutting ring 307 is used to abut against the shaft shoulder 201 of the bushing 200. In the embodiment, the abutting ring 307 is arranged on the abutting part 305 through interference fit, so as to provide a complete support surface for the shaft shoulder 201 of the bushing 200, so that the bushing 200 can be more stably attached to the casing flange 101 during assembly.

[0054] Further, the handle 302 is detachably connected to the end of the screw rod 301 away from the positioning part 303.

[0055] In the embodiment, the handle 302 is arranged to facilitate the rotation of the screw rod 301, so that the force can be better applied when the screw rod 301 is rotated. In specific implementation, the handle 302 is detachably arranged on the screw rod 301 through threaded connection, so as to facilitate the disassembly of the screw rod 301 and the handle 302. When needed, the screw rod 301 and the handle 302 can be assembled again, so as to save storage space and facilitate the storage of the screw rod 301 and the handle 302.

[0056] The application also provides an axial flow casing positioning bushing assembly method. The bushing 200 is inserted into the casing hole 102 through the axial flow casing positioning bushing assembly disassembly device, and the method comprises the following steps:

[0057] The auxiliary assembly mechanism 500 and the operation mechanism 300 are respectively assembled with the fixing mechanism 400;

[0058] The guide pin 503 is inserted into the casing hole 102 for positioning, and then the fixing mechanism 400 is fixedly connected with the casing flange 101, so that the matching part 304 is coaxial with the casing hole 102;

[0059] The bushing 200 is sleeved on the matching part 304, and the shaft shoulder 201 of the bushing 200 abuts against the abutting part 305;

[0060] The screw rod 301 is rotated to push the matching part 304 to move in the axial direction, so that the guide column 306 extends into the guide cavity 505, so that the bushing 200 enters the casing hole 102 to push the guide pin 503 to separate from the casing hole 102, and the shaft shoulder 201 of the bushing 200 is completely attached to the end surface of the casing flange 101, so that the assembly of the bushing 200 is completed.

[0061] For the assembly method of the bushing 200, in actual implementation, first check whether the assembly and disassembly device of the axial flow casing 100 for positioning the bushing 200 is abnormal, clean the parts and clamps, and ensure that the bushing 200 can be sleeved into the matching part 304 and the shaft shoulder 201 of the bushing 200 can abut against the bearing surface. Before assembling the bushing 200, the two half casings are combined to ensure the accurate positional relationship of the two half casings after being combined. In specific installation, first assemble the auxiliary assembly mechanism 500 and the operating mechanism 300 with the fixing mechanism 400 respectively, specifically, threadedly connect the screw rod 301 with the positioning mechanism, detachably connect the auxiliary assembly mechanism 500 with the fixing mechanism 400, then insert the guide pin 503 into the casing hole 102 of the casing in which the bushing 200 needs to be installed for positioning, and then fixedly connect the fixing mechanism 400 with the casing flange 101 to ensure the stable operation of the operating mechanism 300 in the subsequent process. At this time, the matching part 304 coaxially arranged with the guide pin 503 also realizes coaxial arrangement with the casing hole 102, then sleeve the bushing 200 into the matching part 304 and make the shaft shoulder 201 of the bushing 200 abut against the bearing part 305, finally rotate the screw rod 301 to push the matching part 304 to move along the axial direction, drive the guide column 306 to extend into the guide cavity 505, so as to ensure that the matching part 304 keeps coaxial with the casing hole 102 during movement. At this time, the bushing 200 enters the casing hole 102 and pushes the guide pin 503 to separate from the casing hole 102, until the shaft shoulder 201 of the bushing 200 abuts against the end surface of the casing flange 101, and the assembly of the bushing 200 is completed. After all the bushings 200 are installed, rotate the first screw 406 to separate the clamp 401 from the casing flange 101, then unscrew the screw rod 301 to separate the screw rod 301 from the clamp 401, and then clean and check each part, and store each part of the device in a classified manner after no error is found, for convenient use next time. Through the above auxiliary assembly device, the bushing 200 keeps coaxial with the casing hole 102 during movement, so that the bushing 200 only needs to be rotated to be assembled on the casing when being installed, and the assembly operation is simple and convenient, and the risk of damage to the casing caused by impact and knocking during the process of assembling the bushing 200 by knocking is avoided.

[0062] In the process of assembling the bushing 200, the specific process of assisting the assembly of the bushing 200 by the auxiliary assembly mechanism 500 is as follows: the accommodating shell 501 is detachably connected between the two clamping parts 403, then the pulling part 506 is pulled to move the guide pin 503 towards the direction away from the guide column 306 and to the space communicated by the two side clamping grooves 404, then the clamping part 403 is assembled into the casing flange 101, the guide column 306 is coaxial with the casing hole 102, the pulling part 506 is loosened, the elastic piece 508 pushes the limiting ring 507 to rebound to drive the guide part 504 to move towards the guide column 306, at this time, the guide part 504 extends into the casing hole 102, the first screw 406 is screwed to fix the clamp 401 on the casing flange 101, the bushing 200 to be assembled is sleeved on the matching part 304, and the abutting part 305 is abutted with the shaft shoulder 201 of the bushing 200, the positioning part 303 is rotated to move, at this time, the guide column 306 partially extends into the guide cavity 505 to cooperate with the guide pin 503 to center, the screw 301 is continuously rotated to push the bushing 200 to move towards the casing hole 102, until the bushing 200 completely extends into the casing hole 102, at this time, the shaft shoulder 201 of the bushing 200 is completely abutted with the end surface of the casing flange 101. Since the guide column 306 and the guide pin 503 cooperate to center before the bushing 200 contacts the casing hole 102, the bushing 200 can be pressed into the casing hole 102 in the correct direction and position, thereby improving the assembly accuracy, preventing the bushing 200 from being difficult to be completely pressed into the casing hole 102 due to the failure to keep coaxial movement with the casing hole 102 when the bushing 200 is pressed into the casing hole 102, and reducing the difficulty of assembling the bushing 200.

[0063] The application also provides a method for disassembling the axial flow casing positioning bushing, which separates the bushing 200 from the casing hole 102 by the axial flow casing positioning bushing assembly and disassembly device, and comprises the following steps:

[0064] Assembling the operating mechanism 300 and the fixing mechanism 400;

[0065] Inserting the matching part 304 into the end of the bushing 200 without the shaft shoulder 201, and abutting the abutting part 305 with the end of the bushing 200 without the shaft shoulder 201;

[0066] Fixing the fixing mechanism 400 and the casing flange 101;

[0067] Rotating the screw 301 to push the matching part 304 to move axially, so that the abutting part 305 pushes the bushing 200 to move axially and separates from the casing hole 102.

[0068] For the separation method of the bushing 200, in specific implementation, the operating mechanism 300 is assembled with the fixing mechanism 400, specifically, the screw rod 301 is connected with the positioning mechanism through thread, then the matching part 304 is inserted along the one end of the bushing 200 without the shaft shoulder 201, and the abutting part 305 is abutted with the one end of the bushing 200 without the shaft shoulder 201, then the fixing mechanism 400 is fixedly connected with the casing flange 101, finally the screw rod 301 is rotated to push the matching part 304 to move axially, so that the abutting part 305 pushes the bushing 200 to move axially, and the bushing 200 is separated from the casing hole 102. The screw rod 301 is operated to make the abutting part 305 push the bushing 200 out of the casing hole 102, the separation of the bushing 200 is simply, stably and efficiently completed, and the impact and scratch of the casing caused by knocking in the process of knocking the bushing 200 apart is avoided, and the risk of damage of the casing is greatly reduced.

[0069] The above only describes the preferred embodiments of the present application and is not used to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An axial flow casing location bush assembly disassembly device for inserting a bush (200) into a casing bore (102) or separating the bush (200) from the casing bore (102), characterised in that, include: An operating mechanism (300) includes a screw (301) and a positioning part (303) disposed at one end of the screw (301). The positioning part (303) includes a mating part (304) for fitting inside the bushing (200) and a support part (305) for abutting against either end of the bushing (200). The mating part (304) and the support part (305) are coaxially arranged. The support part (305) is also used for clearance fitting with the housing hole (102). A guide post (306) is fixedly connected to one end of the mating part (304) away from the screw (301). The radial dimension of the guide post (306) is smaller than the radial dimension of the mating part (304), and the guide post (306) and the mating part (304) are coaxially arranged. A fixing mechanism (400) is used to fix the casing flange (101) of the axial flow casing (100), and the screw (301) is threadedly connected to the fixing mechanism (400); An auxiliary assembly mechanism (500) is detachably connected to the fixing mechanism (400). The auxiliary assembly mechanism (500) includes a guide pin (503) for extending into the housing hole (102). The guide pin (503) is adapted to the housing hole (102) and coaxially arranged with the mating part (304). The guide pin (503) has a guide cavity (505) adapted to the guide post (306) and coaxially arranged with the guide pin (503).

2. The axial flow casing location bushing assembly disassembly apparatus of claim 1, wherein, The fixing mechanism (400) includes a clamp (401) and a first screw (406) for fixing the clamp (401) to the casing flange (101). The clamp (401) includes a connecting part (402) and two clamping parts (403). The two clamping parts (403) are correspondingly arranged on both sides of the connecting part (402) and the two clamping parts (403) are spaced apart to form a clearance area (405) for the positioning part (303) to move. The clamping part (403) is provided with a clamping groove (404) for clamping the casing flange (101). The first screw (406) is threaded to the clamping part (403) and extends into the clamping groove (404) to abut against the casing flange (101).

3. The axial flow casing location bushing assembly disassembly apparatus of claim 2, wherein, The auxiliary assembly mechanism (500) further comprises a containing shell (501) with a containing cavity (502), the containing shell (501) is detachably connected between the two clamping portions (403), the guide pin (503) penetrates through the containing shell (501), the containing cavity (502) comprises a first cavity wall and a second cavity wall oppositely arranged along the axial direction of the guide pin (503), the first end of the guide pin (503) extends out of the first cavity wall to form a guide portion (504) connected with the guide column (306) and used for adapting with the casing hole (102), the guide cavity (505) is located on the side of the guide portion (504) towards the guide column (306), the second end of the guide pin (503) extends out of the second cavity wall to form a pulling portion (506), a limiting ring (507) is further fixed on the guide pin (503), and the limiting ring (507) abuts against the first cavity wall.

4. The axial flow casing location bushing assembly disassembly apparatus of claim 3, wherein, An elastic member (508) is arranged in the containing cavity (502), the elastic member (508) is sleeved on the guide pin (503), and the two ends of the elastic member (508) abut against the limiting ring (507) and the second cavity wall respectively.

5. The axial flow casing location bushing assembly disassembly apparatus of claim 4, wherein, A guide inclined surface is formed on the side of the guide portion (504) towards the guide column (306).

6. The axial flow casing location bushing assembly disassembly apparatus of claim 5, wherein, A connecting flange (509) is fixedly connected to the outer side wall of the containing shell (501), the connecting flange (509) is detachably connected with the clamping portion (403) through a second screw (510), and the connecting flange (509) is located on the side of the clamping portion (403) away from the connecting portion (402).

7. The axial flow casing location bushing assembly disassembly apparatus of claim 1, wherein, A supporting ring (307) is detachably arranged on the supporting portion (305), and the supporting ring (307) is used for abutting against the shaft shoulder (201) of the bushing (200).

8. The axial flow casing location bushing assembly disassembly apparatus of claim 1, wherein, A handle (302) is detachably connected to the end of the screw rod (301) away from the positioning portion (303).

9. A method of assembling a positioning bushing for a axial flow casing, by the assembly and disassembly device for a positioning bushing for a axial flow casing according to any one of claims 1 to 8, wherein the bushing (200) is assembled into the casing hole (102), characterized in that, The steps include: Assembling the auxiliary assembly mechanism (500) and the operating mechanism (300) with the fixing mechanism (400) respectively; Inserting the guide pin (503) into the casing hole (102) for positioning, and then fixedly connecting the fixing mechanism (400) with the casing flange (101) to make the matching portion (304) coaxial with the casing hole (102); Sleeving the bushing (200) into the matching portion (304) and abutting the shaft shoulder (201) of the bushing (200) against the supporting portion (305); Rotating the screw rod (301) to push the matching portion (304) to move along the axial direction, drive the guide column (306) to extend into the guide cavity (505), and make the bushing (200) enter the casing hole (102) to push the guide pin (503) to separate from the casing hole (102), and move the bushing (200) to the position where the shaft shoulder (201) of the bushing (200) completely abuts against the end face of the casing flange (101), thereby completing the assembly of the bushing (200).

10. A method of disassembling a positioning bushing of a axial flow casing by using the assembly and disassembly device of the positioning bushing of the axial flow casing according to any one of claims 1 to 8, wherein the bushing (200) is separated from the casing hole (102), characterized in that, The steps include: Assembling the operating mechanism (300) with the fixing mechanism (400); Inserting the matching part (304) along the shaft shoulder-free end of the bushing (200) and making the abutting part (305) abut against the shaft shoulder-free end of the bushing (200); Fixing the fixing mechanism (400) with the casing flange (101); Rotating the screw rod (301) to push the matching part (304) to move axially, so that the abutting part (305) pushes the bushing (200) to move axially and separate from the casing hole (102).

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