Single coupling hole honing device and honing method thereof

Abstract

The invention relates to the technical field of coupling hole honing, in particular to a single coupling hole honing device and a construction technology thereof.The single coupling hole honing device comprises a guider and a honing head, the guider comprises a centering sleeve and a guide sleeve, the centering sleeve is used for being installed and fixed in a bolt hole of an old rotor coupling, and a blocking piece is arranged in the guide sleeve; the honing head comprises a driving part, a honing part and a guide rod, the guide rod is arranged at one end of the honing part, and the driving part is arranged at the other end of the honing part and used for driving the honing part to conduct honing operation in a bolt hole of a new rotor coupling centered with an old rotor coupling so that the guide rod can axially slide in the guide sleeve; when the honing part hones to the end point of the bolt hole of the new rotor coupling, the guide rod abuts against the blocking piece so as to prevent the honing part from entering the bolt hole of the old rotor coupling, and the technical defect that the bolt hole of the old rotor coupling can be enlarged due to honing operation of the bolt hole of an existing new rotor coupling is overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coupling hole honing, in particular to a single coupling hole honing device and a honing method thereof. BACKGROUND

[0002] Turbine is the main equipment of thermal power plant. In northern China, low-pressure rotor in the low-pressure cylinder of the turbine needs to be lightened for energy-saving and heating modification in autumn to improve the heating capacity of the unit. After the spring ends, the lightened rotor in the low-pressure cylinder is replaced by a blade rotor, and the unit returns to the original pure condensing operation mode. During the above-mentioned modification of the low-pressure rotor, the low-pressure rotor coupling needs to be replaced twice a year, i.e. the lightened rotor coupling and the blade rotor coupling. The first time is to connect the lightened rotor coupling (new rotor coupling) with the generator rotor coupling (old rotor coupling), and the second time is to connect the original blade rotor coupling with the generator rotor coupling.

[0003] The above-mentioned connection of the couplings needs to be achieved by bolt tensioning and fixing. Since the lightened rotor coupling is produced and processed later, the bolt hole of the lightened rotor coupling needs to be 0.5-2mm smaller than the bolt hole of the generator rotor coupling. That is, the lightened rotor coupling needs to have a 0.5-2mm allowance for the on-site reaming operation with the bolt hole of the generator rotor coupling to finally ensure the consistency of the size of the bolt hole of the lightened rotor coupling with that of the generator rotor coupling.

[0004] In order to ensure the consistency of the hole position, hole diameter and hole pitch of the bolt hole (light hole) of the new rotor coupling with those of the bolt hole (light hole) of the old rotor coupling, the new rotor coupling and the old rotor coupling usually need to be honed together after being centered. However, since the honing head will enter the bolt hole of the old rotor coupling for honing after honing the bolt hole of the new rotor coupling, the bolt hole of the old rotor coupling will be directly enlarged, so that the original connecting bolt cannot be used again and needs to be replaced with a new one, resulting in an increase in the cost of the low-pressure lightened heating modification project.

[0005] In summary, the honing operation of the bolt hole of the new rotor coupling will cause the bolt hole of the old rotor coupling to be enlarged, resulting in the original bolt being unable to be used again and an increase in the cost of the low-pressure lightened heating modification project. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application aims to provide a single coupling hole honing device and a construction process thereof, and aims to solve the technical problem that the honing operation of the bolt hole of the new rotor coupling in the prior art causes the bolt hole of the old rotor coupling to be enlarged, resulting in the original bolt being unable to be used again.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A single-coupling hole honing device comprises a guide and a honing head, the guide comprises a guide sleeve, the guide sleeve is fixedly installed in the bolt hole of the old rotor coupling, and a blocking piece is arranged in the guide sleeve; the honing head comprises a driving part, a honing part and a guide rod, the guide rod is arranged at one end of the honing part, the guide rod is slidably matched with the guide sleeve along the axial direction of the guide sleeve, and the driving part is arranged at the other end of the honing part and used for driving the honing part to perform honing operation in the bolt hole of the new rotor coupling after the new rotor coupling is fixedly centered with the old rotor coupling. The honing part performs honing operation along the axial direction of the bolt hole from the new rotor coupling to the old rotor coupling, and when the honing part is honed from the starting point of the bolt hole of the new rotor coupling to the ending point of the bolt hole of the new rotor coupling, the guide rod is in abutment with the blocking piece to block the honing part from entering the bolt hole of the old rotor coupling.

[0008] The single-coupling hole honing device has the following beneficial effects: In use, the single-coupling hole honing device performs online honing operation on the fixed new rotor coupling based on the old rotor coupling hole, and during the honing operation, the guide rod of the honing head moves axially in the guide sleeve of the guide, and when the honing part is honed to the ending point of the bolt hole of the new rotor coupling, the guide rod is blocked by the blocking piece in the guide sleeve, thereby preventing the honing part from entering the bolt hole of the old rotor coupling and preventing the honing part from honing the bolt hole of the old rotor coupling. That is, the bolt hole of the old rotor coupling is not damaged during the entire honing operation, and the technical defect that the honing operation of the bolt hole of the new rotor coupling causes the bolt hole of the old rotor coupling to increase and the original bolt for connecting the new rotor coupling and the old rotor coupling cannot be used is overcome, thereby greatly reducing the cost of low-pressure optical axis heating reform engineering.

[0009] Further, the blocking piece comprises a pin body and a spring, the pin body is connected with the spring, the pin body can slide relative to the guide sleeve along the axial direction of the guide sleeve, and the spring is fixed in the guide sleeve along the axial direction of the guide sleeve.

[0010] Further, the guide further comprises a centering sleeve, the centering sleeve is fixedly installed in the bolt hole of the old rotor coupling, the guide sleeve is arranged in the centering sleeve, the outer circle of the guide sleeve is a conical structure, the inner cavity of the centering sleeve is a conical through-hole structure, the outer circle of the guide sleeve is conically matched with the inner cavity of the centering sleeve, and the large end of the guide sleeve is close to the honing part.

[0011] Further, a plurality of long slots are formed on the outer wall of the centering sleeve, the long slots are arranged at intervals along the circumference of the centering sleeve, each of the long slots extends along the axial direction of the centering sleeve, and one end of the long slot near the end face of the honing part is an open end.

[0012] Further, the small end of the guide sleeve is integrally connected with a connecting part which extends out of the bolt hole of the old rotor coupling along the axial direction of the guide sleeve, the outer wall of the centering sleeve is provided with a positioning ring which is pressed against the end face of the old rotor coupling away from the new rotor coupling, the outer wall of the connecting part is threadedly connected with a locking piece which presses the positioning ring to lock the centering sleeve on the old rotor coupling.

[0013] Further, the connecting part is further provided with a pusher which is used to push the connecting part to drive the centering sleeve to move along the axial direction of the centering sleeve, so that the centering sleeve is expanded to be supported against the inner wall of the bolt hole of the old rotor coupling.

[0014] Further, the pusher comprises an internally threaded sleeve, a piston sleeve and a fixing sleeve, the internally threaded sleeve is threadedly connected with the outer wall of the connecting part, the piston sleeve is sleeved on the outer wall of the internally threaded sleeve, the fixing sleeve is sleeved on the outer wall of the piston sleeve, a sealing structure is arranged between the piston sleeve and the fixing sleeve, the piston sleeve can move along the axial direction of the fixing sleeve relative to the fixing sleeve, the fixing sleeve is provided with an oil inlet channel which communicates with the piston sleeve and is used to inject hydraulic oil, the hydraulic oil drives the piston sleeve to drive the internally threaded sleeve to drive the connecting part to move along the axial direction of the fixing sleeve.

[0015] Further, a supporting ring is arranged between the pusher and the positioning ring, the supporting ring is sleeved on the outer wall of the locking piece, and the two ends of the supporting ring are respectively abutted against the positioning ring and the fixing sleeve.

[0016] Further, a through hole is formed on the outer wall of the supporting ring, a positioning hole is formed on the outer wall of the locking piece, the positioning hole communicates with the through hole coaxially, and the through hole and the positioning hole form a channel for inserting and pulling the poking stick.

[0017] A honing method of a single-coupling-hole honing device, comprising the following steps: S1, establishing a reference: taking the bolt hole of the old rotor coupling as the reference; S2, determining the honing operation direction: the honing part is honed in the direction along the axial direction of the bolt hole and from the new rotor coupling to the old rotor coupling; S3, honing operation: the honing part is driven by the driving part to perform online honing operation in the bolt hole of the new rotor coupling, when the honing part is honed from the starting point of the bolt hole of the new rotor coupling to the ending point of the bolt hole of the new rotor coupling along the honing operation direction, the guide rod and the blocking piece abut to block the honing part from entering the bolt hole of the old rotor coupling.

[0018] Compared with the prior art, the application has the beneficial effects that: 1. The bolt hole of the new rotor coupling is honed online based on the bolt hole of the old rotor coupling, the bolt hole of the old rotor coupling is not damaged during the whole honing operation, and the honing operation of the bolt hole of the new rotor coupling does not cause the bolt hole of the old rotor coupling to increase, thereby effectively reducing the cost of the low-pressure optical axis heat supply reconstruction project.

[0019] 2. The outer circle of the guide sleeve is matched with the inner cavity taper of the centering sleeve, so that the guide sleeve is locked in the centering sleeve; based on this, a plurality of long grooves are formed in the outer wall of the centering sleeve in the circumferential direction, so that the expansion amount of the centering sleeve can be effectively increased, the centering sleeve can be quickly expanded and abut against the inner wall of the bolt hole of the old rotor coupling, and the centering sleeve is quickly positioned and fixed in the bolt hole of the old rotor coupling while ensuring that the bolt hole of the old rotor coupling is concentrically positioned with the centering sleeve and the guide sleeve, and the concentricity is high.

[0020] 3. The high-pressure oil is injected into the pusher to drive the inner threaded sleeve to drive the guide sleeve to move along the axial direction of the centering sleeve, and the centering sleeve is automatically expanded and abutted against the inner wall of the bolt hole of the old rotor coupling. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The application is applied to the structure of the new and old rotor couplings; Figure 2 The application is applied to the structure of the new and old rotor couplings; Figure 3 The application is applied to the structure of the new and old rotor couplings; Figure 2 The application is applied to the structure of the new and old rotor couplings; Figure 4 The application is applied to the structure of the new and old rotor couplings; Figure 5 The application is applied to the structure of the new and old rotor couplings; Figure 6 The application is applied to the structure of the new and old rotor couplings; Figure 7 The application is applied to the structure of the new and old rotor couplings Figure 1 ; Figure 8Structure diagram of new rotor coupling and old rotor coupling in the state of alignment and fixation Figure 2 .

[0022] Reference numerals in the drawings: 1, guide; 10, guide sleeve; 101, guide hole; 11, centering sleeve; 110, long slot; 111, positioning ring; 12, blocking piece; 120, pin body; 121, spring; 13, check ring; 14, connecting part; 2, pusher; 20, internally threaded sleeve; 21, piston sleeve; 22, fixing sleeve; 23, oil inlet; 24, sealing structure; 3, honing head; 30, driving part; 31, universal joint; 32, honing part; 320, honing body; 321, honing strip; 33, guide rod; 34, driving shaft; 4, locking piece; 40, positioning hole; 5, support ring; 50, through hole; 6, shift lever; 7, old rotor coupling; 8, new rotor coupling; 9, bolt hole. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are merely exemplary for the purpose of explanation and are not intended to limit the present application.

[0024] In the description of the present application, it is to be understood that the terms "width", "upper", "lower", "front", "back", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them.

[0026] Please refer to Figures 1-6 , in the first aspect, the present application provides a single coupling hole honing device, which comprises a guide 1, a pusher 2 and a honing head 3.

[0027] Refer to Figures 1-3 and Figure 5The guide 1 comprises a guide sleeve 10 and a centering sleeve 11, the centering sleeve 11 is arranged in the bolt hole 9 (a light hole) of the old rotor coupling 7, the guide sleeve 10 is arranged in the centering sleeve 11 along the axial direction of the centering sleeve 11, and the guide sleeve 10 can slide relative to the centering sleeve 11. The outer circle of the guide sleeve 10 is a conical structure, the inner cavity of the centering sleeve 11 is a conical through hole structure, the outer circle of the guide sleeve 10 is taperedly matched with the inner cavity of the centering sleeve 11, the large end of the guide sleeve 10 is close to the honing head 3, and the small end of the guide sleeve 10 is close to the pusher 2. Therefore, when the guide sleeve 10 retreats along the axial direction of the centering sleeve 11, the guide sleeve 10 is locked in the centering sleeve 11.

[0028] It should be noted that the retreat of the embodiment refers to the movement in the direction away from the old rotor coupling 7 along the axial direction of the centering sleeve 11.

[0029] In addition, referring to Figure 6 , a plurality of long grooves 110 are arranged on the outer wall of the centering sleeve 11, the long grooves 110 are arranged at intervals along the circumferential direction of the centering sleeve 11, each long groove 110 extends along the axial direction of the centering sleeve 11, and one end of the long groove 110 close to the end face of the honing part 32 is an open end. The long grooves 110 in the circumferential direction of the outer wall of the centering sleeve 11 can effectively increase the expansion amount of the centering sleeve 11. When the guide sleeve 10 retreats, the centering sleeve 11 is expanded and abuts against the inner wall of the bolt hole 9 of the old rotor coupling 7, so that the centering sleeve 11 is quickly positioned and fixed in the bolt hole 9 of the old rotor coupling 7, and the bolt hole 9 of the old rotor coupling 7 is concentrically positioned with the centering sleeve 11 and the guide sleeve 10, and the concentricity is high.

[0030] Referring to Figures 1-3 , Figure 5 and Figure 6 , the small end of the guide sleeve 10 is integrally connected with a connecting part 14, the connecting part 14 extends out of the bolt hole 9 of the old rotor coupling 7 along the axial direction of the guide sleeve 10, the right end outer wall of the centering sleeve 11 is provided with a positioning ring 111, the positioning ring 111 abuts against the end face of the old rotor coupling 7 away from the new rotor coupling 8, a locking piece 4 is threadedly connected to the outer wall of the connecting part 14, the locking piece 4 is a nut, the locking piece 4 extrudes the positioning ring 111, and the centering sleeve 11 is locked on the old rotor coupling 7.

[0031] Referring to Figures 1-3The blocking piece 12 is arranged in the guide sleeve 10 and includes a pin body 120 and a spring 121. The pin body 120 is connected with the spring 121, and the spring is fixed in the guide sleeve in the axial direction of the guide sleeve. The connecting part 14 is in a cylindrical structure and is hollow inside. The inner cavity of the connecting part 14 is coaxially arranged with the guide hole 101 of the guide sleeve 10. The right end of the connecting part 14 is open and detachably connected with a check ring 13. The spring is fixed on the check ring 13 and is arranged in the inner cavity of the connecting part 14 in the axial direction of the guide sleeve 10. Thus, the pin body can be slid relative to the guide sleeve 10 in the axial direction of the guide sleeve and can effectively avoid occupying space in the guide hole 101 of the guide sleeve 10.

[0032] With reference to Figure 2 and Figure 3 The pusher 2 is arranged on the connecting part 14 and is used to push the connecting part to drive the centering sleeve 11 to move in the axial direction of the centering sleeve 11, so that the centering sleeve 11 is expanded and supported against the inner wall of the bolt hole 9 of the old rotor coupling 7.

[0033] With reference to Figure 2 and Figure 3 The pusher 2 includes an internally threaded sleeve 20, a piston sleeve 21 and a fixing sleeve 22. The internally threaded sleeve 20 is threadedly connected with the outer wall of the connecting part. The piston sleeve 21 is sleeved and fixed on the outer wall of the internally threaded sleeve 20. The fixing sleeve 22 is sleeved on the outer wall of the piston sleeve 21. A sealing structure 24 is arranged between the piston sleeve 21 and the fixing sleeve 22. The sealing structure 24 is a sealing ring. The piston sleeve 21 can move relative to the fixing sleeve 22 in the axial direction of the fixing sleeve 22. In addition, the fixing sleeve 22 is provided with an oil inlet channel 23 which is communicated with the piston sleeve 21. The oil inlet channel 23 is used to inject high-pressure hydraulic oil. The hydraulic oil entering the oil inlet channel 23 drives the piston sleeve 21 to drive the internally threaded sleeve 20 to drive the connecting part to move in the axial direction of the fixing sleeve 22. Thus, after the high-pressure hydraulic oil is injected into the oil inlet channel 23, the piston sleeve 21 is forced to retreat with the internally threaded sleeve 20, thereby driving the connecting part to retreat with the guide sleeve 10. The centering sleeve 11 is automatically expanded and supported against the inner wall of the bolt hole 9 of the old rotor coupling 7, and the centering sleeve 11 is quickly positioned and fixed in the bolt hole 9 of the old rotor coupling 7.

[0034] The sealing structure 24 between the piston sleeve 21 and the fixing sleeve 22 can prevent the hydraulic oil from leaking out of the gap between the piston sleeve 21 and the fixing sleeve 22, thereby preventing oil leakage and causing the hydraulic oil to fail to drive the piston sleeve 21 to retreat with the internally threaded sleeve 20. It should be noted that the right end surface of the locking piece 4 does not contact the internally threaded sleeve 20, the piston sleeve 21 and the fixing sleeve 22 in the locked state or the unlocked state.

[0035] With reference to Figure 2 andFigure 3 A supporting ring 5 is arranged between the pusher 2 and the positioning ring 111, the supporting ring 5 is sleeved on the outer wall of the locking piece 4, and the two ends of the supporting ring 5 abut against the positioning ring 111 and the fixed sleeve 22 respectively. Therefore, it can be understood that the left end of the pusher 2 realizes that the end face of the centering sleeve 11 is pressed on the end face of the old rotor coupling 7 through the supporting ring 5. In addition, a through hole 50 is formed in the outer wall of the supporting ring 5, and a positioning hole 40 is formed in the outer wall of the locking piece 4, the positioning hole 40 is coaxially arranged with the through hole 50, and the through hole 50 and the positioning hole 40 are communicated to form a channel for inserting and pulling the poking stick 6. One end of the poking stick 6 is inserted into the channel and abuts against the locking piece 4, and the other end of the poking stick 6 is a free end. An operator rotates the free end of the poking stick around the circumference of the connecting part, so that the locking piece 4 can press the end face of the centering sleeve 11, and the centering sleeve 11 is fixed on the old rotor coupling 7. In addition, the locking piece 4 effectively locks the centering sleeve 11 by releasing the pressure of the pusher 2.

[0036] It should be noted that when the guide sleeve 10 is subjected to the hydraulic thrust of the pusher 2, the guide sleeve 10 is axially retracted and quickly realizes zero-gap fitting along the taper of the centering sleeve 11. At the same time, based on the long slot 110 of the centering sleeve 11, the taper of the centering sleeve 11 generates a radial expansion component, which deforms the outer circle to tighten the bolt hole 9 of the old rotor coupling 7, so as to ensure that the bolt hole 9 of the old rotor coupling 7 is concentrically positioned with the centering sleeve 11 and the guide sleeve 10.

[0037] Referring to Figure 1 The honing head 3 comprises a driving part 30, a universal joint 31, a honing part 32 and a guide rod 33. The guide rod 33 is slidably fitted in the guide sleeve 10 along the axial direction of the guide sleeve 10, the guide rod 33 is fixed at one end of the honing part 32, and the driving part 30 is fixed at the other end of the honing part 32. After the new rotor coupling 8 and the old rotor coupling 7 are centered and fixed, the honing part is driven by the driving part 30 to reciprocate in the bolt hole 9 of the new rotor coupling 8 for honing operation. The honing part 32 comprises a honing body 320 and a plurality of honing strips 321, and the plurality of honing strips 321 are uniformly arranged on the honing body 320 along the circumference of the honing body 320. The honing strips 321 of the honing part 32 are in zero-gap fitting with the bolt hole 9 of the new rotor coupling, and in the process of rotating the honing head 3, the honing strips 321 realize honing processing of the bolt hole 9 of the new rotor coupling 8.

[0038] The universal joint 31 is connected with the driving part 30, the universal joint 31 is connected with the driving shaft 34, the driving shaft 34 is used for being connected with a power mechanism to form a high-speed rotation input end of the honing head 3, and the guide rod 33 is inserted into the guide hole in the guide sleeve 10 to form a high-speed rotation output end of the honing head 3. Therefore, the guide rod 33 moves along the inner hole of the guide sleeve 10 in the axial direction, the radial runout of the honing head 3 is limited, the input end of the honing head 3 can drive the honing head 3 to rotate in all directions, the jamming caused by resistance in the high-speed honing process of the honing strip 321 in the bolt hole 9 of the new rotor coupling is eliminated in real time, and therefore the single-coupling-hole honing operation is smoothly performed.

[0039] During the honing operation of the honing part 32 in the bolt hole 9 of the new rotor coupling 8, the guide rod 33 slides in the axial direction in the guide sleeve 10; the honing part 32 is honed in the axial direction of the bolt hole 9 and from the new rotor coupling 8 to the old rotor coupling 7, when the honing part 32 is honed to the end point of the bolt hole 9 of the new rotor coupling 8, the guide rod 33 abuts against the blocking piece 12 to block the honing part 32 from entering the bolt hole 9 of the old rotor coupling 7.

[0040] Therefore, the working principle of the single-coupling-hole honing device is as follows: The single-coupling hole honing device of the application, in use, injects high-pressure hydraulic oil into the pusher 2 to force the piston sleeve 21 to retreat, thereby driving the inner threaded sleeve 20 to retreat, and further driving the guide sleeve 10 to retreat; the retreat of the guide sleeve 10 will make the centering sleeve 11 expand and open to press against the inner wall of the bolt hole 9 of the old rotor coupling 7, realizing the rapid positioning and fixing of the centering sleeve 11 in the bolt hole 9 of the old rotor coupling 7, while ensuring the bolt hole 9 of the old rotor coupling 7 to be concentrically positioned with the centering sleeve 11 and the guide sleeve 10, with high concentricity; then, the handle 6 is manually rotated to tighten the locking member 4, and then the pusher 2 is depressurized; since the locking member 4 has been manually tightened in advance, and the connecting part is a rigid part, when the connecting part is stretched by the tension, the threads on the outer wall of the connecting part elastically deform and stretch; after the pusher 2 is depressurized, the piston sleeve 21 returns to drive the inner threaded sleeve 20 and the connecting part 14 connected with the inner threaded sleeve 20 to move forward, the tension of the connecting part is released, the elastic deformation of the threads on the outer wall of the connecting part is retracted, thereby making the locking member produce a locking effect, satisfying the final locking of the locking member 4, and making the positioning ring 111 press and lock on the right end surface of the old rotor coupling 7. Based on this, the guide rod 33 of the honing head 3 is inserted into the guide hole of the guide sleeve 10, so that the bolt hole 9 of the old rotor coupling 7 is taken as a reference, the honing head 3 is driven by an external power mechanism to screw into the bolt hole 9 (a light hole) of the new rotor coupling, and the new rotor coupling well positioned and fixed with the old rotor coupling 7 is subjected to online honing operation; the guide rod 33 of the honing head 3 moves axially along the guide hole of the guide sleeve 10, and the honing part performs honing operation along the axial direction of the bolt hole and from the new rotor coupling to the old rotor coupling; during the honing operation, when the honing part is honed from the beginning of the bolt hole of the new rotor coupling to the end of the bolt hole of the new rotor coupling, the guide rod abuts against the blocking member to block the honing part from entering the bolt hole of the old rotor coupling, preventing the honing part 32 from honing the bolt hole 9 of the old rotor coupling 7, and at the same time, the blocking member plays a role of buffering the guide rod 33. The bolt hole 9 of the old rotor coupling 7 is not damaged during the whole honing operation, overcoming the problem that the existing honing operation of the bolt hole 9 of the new rotor coupling will cause the bolt hole 9 of the old rotor coupling 7 to increase, and avoiding the original bolts used for connecting the new rotor coupling and the old rotor coupling 7 from being unable to continue to be used.

[0041] When the honing operation is completed, the pusher is pressurized, the handle 6 is manually rotated to loosen the locking member 4; then, the pusher is depressurized, and the pusher and the guide are disassembled.

[0042] It is worth noting that, in use, the single-coupling hole honing device of the application, whether the bolt hole 9 of the new rotor coupling is concentrically aligned with the bolt hole 9 of the old rotor coupling 7 (such as Figure 7or the bolt hole 9 of the new rotor coupling is eccentrically aligned with the bolt hole 9 of the old rotor coupling (as shown in FIG. 2B), both of which can satisfy the honing operation of the bolt hole 9 of the new rotor coupling based on the bolt hole 9 of the old rotor coupling. Figure 8 or the bolt hole 9 of the new rotor coupling is eccentrically aligned with the bolt hole 9 of the old rotor coupling (as shown in FIG. 2B), both of which can satisfy the honing operation of the bolt hole 9 of the new rotor coupling based on the bolt hole 9 of the old rotor coupling.

[0043] In a second aspect, the present application further provides a honing method of the single-coupling-hole honing device, comprising the following steps: S1, establishing a reference: taking the bolt hole of the old rotor coupling as the reference; S2, determining the honing operation direction: the honing part is honed in the axial direction of the bolt hole and from the new rotor coupling to the old rotor coupling; S3, honing operation: the honing part is driven by the driving part to perform the online honing operation in the bolt hole of the new rotor coupling, when the honing part is honed from the starting point of the bolt hole of the new rotor coupling to the ending point of the bolt hole of the new rotor coupling along the honing operation direction, the guide rod and the blocking piece are in abutment to block the honing part from entering the bolt hole of the old rotor coupling.

[0044] Further, the assembly process of the single-coupling hole honing device is described as follows: after the blocking piece 12 is fixedly installed in the guide sleeve 10 of the guide 1, the guide sleeve 10 is arranged in the inner cavity of the centering sleeve 11, at this time, the centering sleeve 11 is inserted into the bolt hole 9 of the old rotor coupling 7; then the locking piece 4 which is threadedly connected with the outer wall of the connecting portion is sleeved on the connecting portion of the guide sleeve 10, and at the same time, the supporting ring 5 is sleeved on the locking piece 4; then the inner threaded sleeve 20 of the pusher 2 is threadedly connected with the connecting portion, the action of installing the pusher 2 on the connecting portion is completed, and at the same time, the locking piece 4 and the supporting ring 5 press the positioning ring 111 of the centering sleeve 11; then after the new rotor coupling is centered and fixed with the old rotor coupling 7, the guide rod 33 of the honing head 3 is inserted into the guide hole of the guide sleeve 10; at this time, high-pressure hydraulic oil is injected into the pusher 2, so as to force the piston sleeve 21 to retreat, thereby driving the inner threaded sleeve 20 to retreat, and further driving the guide sleeve 10 to retreat; the retreat of the guide sleeve 10 causes the centering sleeve 11 to expand and press against the inner wall of the bolt hole 9 of the old rotor coupling 7, so as to realize the rapid positioning and fixation of the centering sleeve 11 in the bolt hole 9 of the old rotor coupling 7, at this time, the manual handle 6 is inserted and screwed with the locking piece 4, so as to ensure that the locking piece 4 presses the positioning ring 111, then the pusher is depressurized, the locking piece 4 locks the positioning ring 111 and the end face of the old rotor coupling 7, and the bolt hole 9 of the old rotor coupling 7 is concentrically positioned with the centering sleeve 11 and the guide sleeve 10. Based on this, the guide rod 33 of the honing head 3 is inserted into the guide hole of the guide sleeve 10, so that the bolt hole 9 of the old rotor coupling 7 is taken as a reference, and the honing head 3 is driven by an external power mechanism to screw into the bolt hole 9 (a light hole) of the new rotor coupling, so as to perform online honing operation on the new rotor coupling which is centered and fixed with the old rotor coupling 7.

[0045] During the honing operation, the guide rod 33 of the honing head 3 moves axially along the guide hole of the guide sleeve 10, when the honing portion 32 is honed to the end point of the bolt hole 9 of the new rotor coupling, the guide rod 33 is blocked by the spring pin in the guide sleeve 10, so as to prevent the honing portion 32 from entering the bolt hole 9 of the old rotor coupling 7, and further prevent the honing portion 32 from damaging or expanding the bolt hole 9 of the old rotor coupling 7.

[0046] From the above, the application solves the problem that the traditional honing head can only simultaneously hone the bolt holes of new and old rotor couplings, generates a track with axial positioning by setting the guide slide rod to reciprocate along the installed guide, solves the technical problem of honing only the bolt holes of the new rotor coupling under the premise of taking the old rotor coupling hole as the reference, effectively reduces the difficulty and workload of rotor coupling bolt hole processing, thereby meeting the original coupling bolt installation and fastening, eliminating the cost increase caused by the enterprise's re-purchase of bolts, and also solving the connection interchangeability of the original blade rotor coupling with the generator rotor coupling and the light shaft rotor coupling, thereby eliminating the repeated honing operation caused by the mutual connection between different rotor couplings.

[0047] The above is only the preferred embodiment of the application, and does not limit the patent scope of the application, and any equivalent structure or equivalent flow transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A honing device for a single coupling bore, characterized in that, The device includes a guide and a honing head. The guide includes a guide sleeve, which is installed and fixed in the bolt holes of the old rotor coupling. A blocking element is provided inside the guide sleeve. The honing head includes a drive unit, a honing part, and a guide rod. The guide rod is located at one end of the honing part and is slidably adapted to the guide sleeve along the axial direction. The drive unit is located at the other end of the honing part and is used to drive the honing part to perform honing operations in the bolt holes of the new rotor coupling after it has been aligned and fixed with the old rotor coupling. The honing part hones along the axial direction of the bolt hole and from the new rotor coupling toward the old rotor coupling. When the honing part hones from the starting point of the bolt hole of the new rotor coupling to the ending point of the bolt hole of the new rotor coupling along the honing operation direction, the guide rod abuts against the blocking member to prevent the honing part from entering the bolt hole of the old rotor coupling.

2. The honing device for a single coupling bore according to claim 1, characterized in that, The blocking element includes a pin and a spring. The pin is connected to the spring and can slide relative to the guide sleeve along the axial direction of the guide sleeve. The spring is fixed inside the guide sleeve along the axial direction of the guide sleeve.

3. The honing device for a single coupling bore according to claim 1, characterized in that, The guide also includes a centering sleeve, which is installed and fixed in the bolt hole of the old rotor coupling. The guide sleeve is disposed inside the centering sleeve. The outer circle of the guide sleeve is a conical structure, and the inner cavity of the centering sleeve is a conical through hole structure. The outer circle of the guide sleeve and the inner cavity of the centering sleeve are taper-fitted, and the large end of the guide sleeve is close to the honing part.

4. The honing device for a single coupling bore according to claim 3, characterized in that, The outer wall of the centering sleeve is provided with a plurality of elongated grooves, which are spaced apart along the circumference of the centering sleeve. Each elongated groove extends along the axial direction of the centering sleeve, and one end of the elongated groove near the end face of the honing part is an open end.

5. A honing device for a single coupling bore according to claim 4, characterized in that, The guide sleeve has a connecting part integrally connected to its small end. The connecting part extends axially out of the bolt hole of the old rotor coupling. A positioning ring is provided on the outer wall of the centering sleeve. The positioning ring presses against the end face of the old rotor coupling facing away from the new rotor coupling. A locking member is threaded on the outer wall of the connecting part. The locking member squeezes the positioning ring, so that the centering sleeve is locked on the old rotor coupling.

6. A honing device for a single coupling bore according to claim 5, characterized in that, The connecting part is also provided with a pusher, which is used to push the connecting part to drive the centering sleeve to move along the axial direction of the centering sleeve, so that the centering sleeve expands and presses against the inner wall of the bolt hole of the old rotor coupling.

7. A honing device for a single coupling bore according to claim 6, characterized in that, The actuator includes an internal threaded sleeve, a piston sleeve, and a fixed sleeve. The internal threaded sleeve is threadedly connected to the outer wall of the connecting part. The piston sleeve is fitted onto the outer wall of the internal threaded sleeve, and the fixed sleeve is fitted onto the outer wall of the piston sleeve. A sealing structure is provided between the piston sleeve and the fixed sleeve, and the piston sleeve can move relative to the fixed sleeve along the axial direction of the fixed sleeve. The fixed sleeve is provided with an oil inlet passage communicating with the piston sleeve. The oil inlet passage is used to inject hydraulic oil. The hydraulic oil drives the piston sleeve to drive the internal threaded sleeve to drive the connecting part to move along the axial direction of the fixed sleeve.

8. A honing device for a single coupling bore according to claim 7, characterized in that, A support ring is provided between the pusher and the positioning ring. The support ring is sleeved on the outer wall of the locking member, and the two ends of the support ring abut against the positioning ring and the fixing sleeve, respectively.

9. A honing device for a single coupling bore according to claim 8, characterized in that, The outer wall of the support ring has a through hole, and the outer wall of the locking member has a positioning hole. The positioning hole and the through hole are connected and coaxial. The through hole and the positioning hole are connected to form a channel for inserting and removing the lever.

10. A honing method for a single coupling bore honing apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Establish a reference: Use the bolt holes of the old rotor coupling as the reference; S2. Determine the honing operation direction: The honing part is honing along the axial direction of the bolt hole and from the new rotor coupling toward the old rotor coupling. S3. Honing operation: The honing part is driven by the drive unit to perform online honing operation in the bolt holes of the new rotor coupling. When the honing part hones from the starting point of the bolt hole of the new rotor coupling to the ending point of the bolt hole of the new rotor coupling along the honing operation direction, the guide rod abuts against the blocking member to prevent the honing part from entering the bolt hole of the old rotor coupling.

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