CN111318873B

CN111318873B - Staggered hole correcting equipment and staggered hole correcting method

Info

Publication number: CN111318873B
Application number: CN201811527366.9A
Authority: CN
Inventors: 孙国晶; 拜亮; 常宝军
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2023-06-16
Anticipated expiration: 2038-12-13
Also published as: CN111318873A

Abstract

The invention provides a staggered hole correcting device and a staggered hole correcting method, wherein the staggered hole correcting device comprises a correcting device, and the correcting device comprises: the correcting rod comprises a large-diameter part, a small-diameter part and a frustum part positioned between the large-diameter part and the small-diameter part; the correction sleeve can be sleeved on the correction rod, the minimum inner diameter of the correction sleeve is larger than the outer diameter of the small-diameter portion, the correction sleeve is provided with an inner cone portion corresponding to the frustum portion, the inner cone portion is in contact with the frustum portion, and thrust can be applied to the frustum portion, and the taper of the frustum portion is different from that of the inner cone portion. According to the staggered hole correcting device and the staggered hole correcting method, the staggered hole correcting efficiency can be improved, the correcting precision is improved, the error is reduced, the safety risk is reduced, in addition, the damage caused by the connection of bolts can be avoided by adopting the integral clamping structure, and the reliability is improved.

Description

Staggered hole correcting equipment and staggered hole correcting method

Technical Field

The invention relates to a staggered hole correcting device and a staggered hole correcting method.

Background

In wind generating sets, during installation and use, a phenomenon of misplacing may occur between the connection holes of the pitch bearing and the blades and between the pitch bearing and the connection holes of the hub, which has the direct consequence of breaking the connection bolts.

The known method for correcting the staggered holes is to adjust the dislocation of the pitch bearing by using a jack plus a square, however, in the method, the jack force application point is not firm, the adjustment is inaccurate, and the method is time-consuming and labor-consuming.

Disclosure of Invention

In order to solve the problems of infirm force application points, inaccurate adjustment, time and labor waste in the correction of the staggered holes, the invention provides staggered hole correction equipment and a staggered hole correction method, wherein the force application in the correction process is stable and safe, and the correction of the staggered holes is accurate, simple and reliable.

An aspect of the present invention provides a misalignment correction apparatus, the misalignment correction apparatus comprising a correction means comprising: the correcting rod comprises a large-diameter part, a small-diameter part and a frustum part positioned between the large-diameter part and the small-diameter part; the correction sleeve can be sleeved on the correction rod, the minimum inner diameter of the correction sleeve is larger than the outer diameter of the small-diameter portion, the correction sleeve is provided with an inner cone portion corresponding to the frustum portion, the inner cone portion is in contact with the frustum portion, and thrust can be applied to the frustum portion, and the taper of the frustum portion is different from that of the inner cone portion.

Preferably, the taper of the frustoconical portion may be greater than the taper of the inner frustoconical portion, or the taper of the frustoconical portion may be less than the taper of the inner frustoconical portion.

Preferably, the error correction apparatus may further include a driving device, which may include a first driving part and a second driving part capable of relatively linearly moving, the correction rod may be fixedly connected to the first driving part, and the correction sleeve may be connected to the second driving part, in linkage with the second driving part.

Preferably, the driving means may be a hydraulic cylinder, the first driving portion may be a piston rod, and the second driving portion may be a cylinder.

Preferably, the misalignment correction apparatus may include a sleeve coupling body, one end of which may be coupled to the second driving portion and the other end of which may be sleeved on an end of the correction sleeve, the sleeve coupling body may form an inner cavity, and a coupling position of the correction rod and the first driving portion may be located in the inner cavity, the correction sleeve being movable in the sleeve coupling body in a direction perpendicular to a length direction of the correction sleeve and being restricted from being movable in the length direction of the correction sleeve.

Preferably, an end of the correction sleeve facing away from the inner cone portion may be formed with an outwardly protruding flange portion, and the sleeve connecting body may include stopper walls located at both sides of the flange portion in a length direction of the correction sleeve, and the flange portion may be restricted from moving in the length direction of the correction sleeve.

Preferably, the staggered hole correcting device may further include a floating pressing plate embedded in the inner cavity of the sleeve connecting body, a first end face of the floating pressing plate may be in surface contact with an end face of the flange portion, which faces away from the inner cone portion, and a second end face of the floating pressing plate may be in contact with the limiting wall.

Preferably, the sleeve connector may be of a split-up and down construction.

Preferably, the misalignment correction apparatus may further include a rod connection device, the rod connection device may include a connection block, the connection block may be fixed to the first driving portion, a clamping groove may be formed in the connection block, an end of the small diameter portion may be provided with an outwardly protruding diameter increasing portion, and the diameter increasing portion may be capable of being embedded in the clamping groove.

Preferably, the lever connection device may further include a blocking plate which may be provided on the connection block and can open or block at least a portion of the card slot.

Preferably, one end of the baffle is connected to the connection block by a pivot shaft, capable of rotating about the pivot shaft.

Preferably, the misalignment correction apparatus may further comprise a fixing ring, which may be connected to the second driving part, disposed between the sleeve connecting body and the second driving part, and the sleeve connecting body may be coupled to the fixing ring to be rotatable with respect to the fixing ring.

Preferably, the securing ring may comprise a circumferentially extending receiving groove, in which an end of the sleeve connection body facing the drive means may extend radially inwards, being receivable.

Preferably, the error hole correcting apparatus may further include a coaxial measuring device for measuring a degree of deviation of the correcting rod from the correcting sleeve, the coaxial measuring device may include a dial indicator and a sleeve rod, the sleeve rod may be sleeved between the small diameter portion and the correcting sleeve, the dial indicator may be disposed on the sleeve rod, and a probe of the dial indicator may be in contact with an inner wall of the correcting sleeve.

Preferably, the taper of the frustum portion may be less than 1:10, the taper of the inner taper portion may be less than 1:13, and the large diameter portion may be formed with external threads.

Another aspect of the present invention provides a method for correcting a staggered hole, the method comprising: installing the error hole correcting equipment on the first member and the second member to be corrected, combining the large-diameter part of the correcting rod into the first hole of the first member, and enabling the small-diameter part of the correcting rod to extend outwards from the second hole of the second member, wherein the correcting sleeve is sleeved on the correcting rod and extends into the second hole of the second member; the correction sleeve is driven to move along the length direction of the correction rod relative to the correction rod so as to correct.

Preferably, the misalignment correction method may further include: after correction, the degree of deviation of the correction rod and the correction sleeve of the staggered hole correction device is measured to determine whether the corrected first hole and second hole reach a predetermined coaxiality.

Another aspect of the present invention provides a misalignment correction apparatus comprising a correction means, a drive means, a retaining ring, a rod connection means, a sleeve connection, the correction means comprising: the correcting rod comprises a large-diameter part, a small-diameter part and a frustum part positioned between the large-diameter part and the small-diameter part; the correction sleeve can be sleeved on the correction rod, the minimum inner diameter of the correction sleeve is larger than the outer diameter of the small-diameter portion, the correction sleeve is provided with an inner cone portion corresponding to the frustum portion, the inner cone portion is in contact with the frustum portion and can apply thrust to the frustum portion, the driving device comprises a first driving portion and a second driving portion which can move linearly relatively, the fixing ring is connected to the second driving portion, the rod connecting device comprises a connecting block, the connecting block is fixed to the first driving portion, a clamping groove is formed in the connecting block, the end portion of the small-diameter portion is provided with an outwards protruding diameter increasing portion, the diameter increasing portion can be embedded in the clamping groove, one end of the sleeve connecting body is combined to the fixing ring and is linked with the fixing ring, the other end of the sleeve connecting body is sleeved on the end portion of the correction sleeve, the correction sleeve can move in the direction perpendicular to the length direction of the correction sleeve in the sleeve connecting body and is limited to move in the length direction of the correction sleeve, the sleeve connecting body is formed with an inner cavity, and the diameter increasing portion and the connecting block are located in the inner cavity.

Preferably, the sleeve connector can rotate relative to the fixing ring, and the sleeve connector can be of an upper-lower split type structure.

Preferably, an end of the correction sleeve facing away from the inner cone portion may be formed with an outwardly protruding flange portion, the sleeve connection body may include limiting walls located at both sides of the flange portion in a length direction of the correction sleeve, the limiting walls may be limited to move along the length direction of the correction sleeve, the staggered hole correction apparatus may further include a floating pressure plate embedded in an inner cavity of the sleeve connection body, a first end surface of the floating pressure plate may be in surface contact with an end surface of the flange portion facing away from the inner cone portion, and a second end surface of the floating pressure plate may be in contact with the limiting walls.

According to the staggered hole correcting device and the staggered hole correcting method, the staggered hole correcting efficiency can be improved, the correcting precision can be improved, the error can be reduced, and the safety risk can be reduced.

In addition, according to the staggered hole correcting device and the staggered hole correcting method, the pushing-in and pulling-out actions of the correcting rod and the correcting sleeve can be smoothly realized, and the correcting rod and the correcting sleeve are prevented from being damaged.

Further, according to the misalignment correction apparatus and the misalignment correction method of the present invention, the phenomenon that the bolts of the apparatus such as the pitch bearing are loosened to cause the apparatus to shift can be eliminated by correcting the misalignment.

In addition, according to the staggered hole correcting device and the staggered hole correcting method, the coaxiality of the pitch bearing and the threaded hole of the hub in assembly can be measured, and corresponding data support is provided for safe operation of the wind generating set.

In addition, according to the misalignment correction apparatus and the misalignment correction method of the present invention, accurate measurement of coaxiality of corrected holes such as screw holes and through holes after completion of misalignment correction can be achieved, ensuring correction accuracy.

In addition, according to the staggered hole correcting device and the staggered hole correcting method, the integral clamping structure is adopted, so that the number of the bolt connections can be reduced, the damage of the staggered Kong Jiaozheng device caused by the bolt connection is avoided, and the reliability is improved.

Drawings

Fig. 1 is a schematic diagram illustrating a misalignment correction apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating a correction rod of a staggered hole correction device in accordance with an embodiment of the present invention.

Fig. 3 is a schematic diagram illustrating a correction sleeve of a staggered hole correction apparatus in accordance with an embodiment of the present invention.

Fig. 4 is a perspective view illustrating a socket connector of a staggered hole correcting apparatus according to an embodiment of the present invention.

Fig. 5 is a perspective view showing a connection block of the rod connection means of the misalignment correction apparatus according to the embodiment of the present invention.

Fig. 6 is a schematic view showing a connection relationship of a correction lever and a lever connection device of the misalignment correction apparatus according to the embodiment of the present invention.

Fig. 7 and 8 are schematic views showing a coaxial measuring device of the misalignment correction apparatus according to the embodiment of the present invention.

Fig. 9 to 15 are schematic views illustrating an installation process of the misalignment correction apparatus according to the embodiment of the present invention.

Fig. 16 is a schematic diagram illustrating a misalignment correction method using multiple sets of misalignment correction apparatus according to an embodiment of the invention.

Reference numerals illustrate:

100: correction bar, 110: large diameter portion, 120: small diameter portion, 121: lever force receiving portion, 122: diameter increasing portion, 130: frustum portion, 200: correction sleeve, 210: inner taper, 220: flange portion, 300: drive device, 310: cylinder barrel, 320: piston rod, 410: sleeve connection, 411: floating platen, 412: end limiting wall, 413: fixing rib, 420: rod connection means 421: connection block, 422: clamping groove 423: baffle, 424: spacing member, 425: threaded connection, 430: fixing ring, 431: holding tank, 500: coaxial measuring device, 510: percentage table, 520: loop bar, 521: cut-out portion, 522: incision portion sidewall, 610: hydraulic station, 620: oil delivery pipe, 621: quick-change connector, 622: total oil delivery pipe, 623: branch oil delivery pipe, 630: a dispensing valve.

Detailed Description

Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. Although the hub and the pitch bearing of the wind turbine generator system will be described below as examples, the scope of application of the misalignment correction apparatus according to the present invention is not limited thereto, and it may be applied to various occasions where misalignment correction is required, not to the field of wind power generation or to the misalignment Kong Jiaozheng between the hub and the pitch bearing. Furthermore, the misalignment correction apparatus according to the present invention is applicable to both Kong Jiaozheng alignment during the assembly of the apparatus and to the case of misalignment of the holes that occurs after a period of operation of the apparatus.

A specific configuration of the misalignment correction apparatus according to the embodiment of the present invention will be described in detail below with reference to fig. 1 to 8.

The misalignment correction apparatus according to an embodiment of the present invention includes a correction means including a correction rod 100 and a correction sleeve 200.

As shown in fig. 1 and 2, the correction rod 100 may include a large diameter portion 110, a small diameter portion 120, and a frustum portion 130 between the large diameter portion 110 and the small diameter portion 120. The correction rod 100 may have an overall long rod shape. During the straightening process, the large diameter portion 110 of the straightening rod 100 may be inserted into the first hole H1 to be straightened, and the frustum portion 130 and the small diameter portion 120 may be positioned in the second hole H2 to be straightened.

The large diameter portion 110 of the correction lever 100 can be inserted into the first hole H1 (e.g., a screw hole of a hub) so as to be held stationary at least in a direction perpendicular to the length direction of the correction lever 100. For this reason, preferably, in the case where the first hole H1 to be corrected is a screw hole, as shown in fig. 2, an external screw thread may be formed on the large diameter portion 110 to be engaged with the internal screw thread of the first hole H1, thereby being screwed into the first hole H1 to enable the correction rod 100 to be well fixed. Alternatively, the large diameter portion 110 may be formed in a cylindrical shape having an outer diameter approximately equal to the inner diameter of the first hole H1, in which case no external thread may be formed. Further, the length of the large diameter portion 110 may be set according to the depth of the first hole H1, and preferably, the length of the large diameter portion 110 is approximately equal to the depth of the first hole H1 to better position the correction rod 100 in the first hole H1.

The frustum portion 130 may include a large diameter end and a small diameter end, with the outer diameter of the frustum portion 130 gradually decreasing from the large diameter end to the small diameter end along the length of the correction rod 100 such that the frustum portion 130 is tapered in overall. The large diameter portion 110 is connected to the large diameter end of the frustum portion 130, and the outer diameter thereof may be the same as that of the large diameter end.

The small diameter portion 120 may extend from a small diameter end of the frustum portion 112. The small diameter portion 120 may be inserted into the second hole H2 together with the frustum portion 130, and when the correction rod 100 is inserted into the first and second holes H1 and H2, the free end of the small diameter portion 120 may protrude to the outside from the second hole H2 so as to facilitate pulling out the correction rod 100 from the hole. The shape of the small diameter portion 120 is not particularly limited as long as it can be inserted into the second hole H2 and does not interfere with insertion of the correction sleeve 200, which will be described later, into the second hole H2, and preferably the maximum outer diameter of the small diameter portion 120 does not exceed the outer diameter of the small diameter end of the frustum portion 130, for example, the small diameter portion 120 may have a cylindrical shape having an outer diameter approximately equal to the outer diameter of the small diameter end of the frustum portion 130.

In addition, in the case where the male screw is formed on the large diameter portion 110, the small diameter portion 120 may be formed with the rod receiving portion 121. For example, as shown in fig. 2, the rod receiving portion 121 may be an internal hexagonal groove formed in an end portion of the small diameter portion 120 so as to be forcibly screwed with a screwing member such as a wrench (e.g., an internal hexagonal wrench T6) to ensure screwing of the correction rod 100 to a reliable position. However, the construction of the lever receiving portion 121 is not limited thereto, and it may be realized by forming a prismatic shape for facilitating gripping of a wrench on a part of the end of the small diameter portion 120, for example.

The orthotic sleeve 200 can be placed over the orthotic rod 100. And may have an inner cone 210 formed to correspond to the frustum portion 130, and the inner cone 210 may be in contact with the frustum portion 130 and may be capable of applying a pushing force to the frustum portion 130. The minimum inner diameter of the orthotic sleeve 200 may be greater than the outer diameter of the small diameter portion 120. The shape of the outer surface of the orthotic sleeve 200 is not limited. Preferably, the correction sleeve 200 may be formed in a cylindrical shape having an outer diameter slightly smaller than an inner diameter of the second hole H2.

The inner cone 210 may be formed on an inner surface of the end of the correction sleeve 200 inserted into the hole H2 to be corrected and have a tapered shape corresponding to that of the frustum portion 130 of the correction rod 100 to be pressed against each other with the frustum portion 130 during correction, thereby achieving correction. Specifically, the correction sleeve 200 is movable from the small diameter portion 120 of the correction rod 100 toward the frustum portion 130 in the longitudinal direction of the correction rod 100 relative to the correction rod 100, so that the inner taper portion 210 of the correction sleeve 200 contacts the frustum portion 130 and can apply thrust to the frustum portion 130.

As shown in fig. 1, when there is a misalignment between the first hole H1 and the second hole H2, the correction rod 100 may be inserted from right to left, the large diameter portion 110 may be inserted into the first hole H1 to be corrected, then the correction sleeve 200 may be pushed in along the gap between the small diameter portion 120 and the second hole H2, and the thrust force may be continuously applied when the inner cone portion 210 of the correction sleeve 200 is in contact with the frustum portion 130, and the frustum portion 130 may be pressed by the thrust force, thereby converting the axial force into the radial force, thereby providing the radial force and the radial displacement required for correcting the misalignment to move together with the member in which the second hole H2 is located (e.g., move in the downward direction as shown in fig. 1), thereby eliminating the misalignment and realizing the correction function.

Here, the correction rod 100 may be fixed, and the correction rod 100 may provide a guide connection function when the correction sleeve 200 moves toward the inside of the second hole H2, so that the correction sleeve 200 moves while being radially displaced. The correction sleeve 200 is moved by the action of external force, the correction is performed by the mutual cooperation and extrusion of the correction sleeve 200 and the correction rod 100, the correction sleeve 200 is responsible for correction, and the correction rod 100 is used for centering the misplaced device. In the above-described correcting process, the correcting rod 100 is kept stationary, and the member in which the second hole H2 is located is moved together with respect to the first hole H1 by the movement of the correcting sleeve 200, so that the misalignment is eliminated, however, the correcting process of the misalignment correcting apparatus according to the present invention is not limited thereto, and the member in which the second hole H2 is located may be kept stationary during the pushing of the correcting sleeve 200, and the correcting rod 100 is moved in a direction perpendicular to the length direction thereof by the pushing force of the correcting sleeve 200 to the frustum portion 130, so that the member in which the first hole H1 is located is moved with respect to the second hole H2, so that the misalignment is eliminated.

Further, as shown in fig. 3, an end portion of the correction sleeve 200 protruding outside the second hole H2 (i.e., an end portion facing away from the inner cone portion 210) may be formed with an outwardly protruding flange portion 220 to increase a force receiving area, facilitate pushing the correction sleeve 200 into the second hole H2, and also facilitate pulling out the correction sleeve 200 from the second hole H2 after the correction is completed, and the flange portion 220 may be connected to a driving device 300 to be described below as a force receiving portion receiving a pushing force or a pulling force provided by the driving device 300. In addition, the flange portion 220 may also act as a stop to prevent the orthotic sleeve 200 from fully entering the second bore H2.

Here, since a certain pushing force (e.g., a hydraulic pushing force up to 150 KN) is applied to the correction sleeve 200 during the correction, the inner taper portion 210 of the correction sleeve 200 may closely adhere to the frustum portion 130 of the correction rod 100 after the correction is completed, and thus, a seizing phenomenon may occur between the correction rod 100 and the correction sleeve 200, resulting in that the correction sleeve 200 cannot be smoothly withdrawn or the forced withdrawal is required to damage the force-receiving end (e.g., the flange portion 220) of the correction sleeve 200. Accordingly, the taper of the frustoconical portion 130 of the orthotic stem 100 may be made different from the taper of the inner taper 210 of the orthotic sleeve 200.

Specifically, as shown in fig. 2 and 3, the cone angle of the truncated cone portion 130 is 2θ ₁ The cone angle of the inner cone 210 is 2θ ₂ The taper of the frustum portion 130 is tan theta ₁ The taper of the inner cone 210 is tan θ ₂ . Here, the taper refers to a ratio of a difference in radius of a circular section at both ends of the frustum portion (or the inner cone portion) to a length of the frustum portion (or the inner cone portion). To facilitate withdrawal of the orthotic sleeve 200 after the correction, the taper of the frustoconical portion 130 may be less than or greater than the taper of the inner frustoconical portion 210, that is, the angle θ ₁ May be less than or greater than the angle θ of the inner cone 210 ₂ 。

As described above, the matching parts (i.e., the frustum portion 130 and the inner cone portion 210) of the correction rod 100 and the correction sleeve 200 can be processed into different tapers, and a certain gap exists during the matching, so that the pushing and withdrawing actions of the correction rod and the correction sleeve are facilitated, the blocking phenomenon of the correction rod and the correction sleeve is effectively avoided, and the operation is facilitated.

Further, in the staggered hole correcting apparatus according to the present invention, the amounts of taper of the frustum portion 130 and the inner cone portion 210 may be limited according to the maximum axial force that the frustum portion 130 and the inner cone portion 210 can withstand. Specifically, radial force/axial force = taper, where radial force is the force of the pitch bearing in the radial direction, axial force is the thrust pushing the orthotic sleeve 200 in the axial direction, i.e. radial force and axial force are the component forces of the thrust applied to the orthotic sleeve 200 at the inner taper 210, split in the radial and axial directions, respectively. In order to ensure that the frustoconical portion 130 and the inner cone portion 210 are not damaged during the application of the pushing force, there is a limit to the axial force, that is, the axial force component should be less than the maximum axial force that can be sustained by the frustoconical portion 130 and the inner cone portion 210 when the pushing force is applied at a certain time, which can be achieved by adjusting the taper of the frustoconical portion 130 and the inner cone portion 210. Preferably, the taper of the frustoconical portion 130 may be less than 1:10 and the taper of the inner cone 210 may be less than 1:13 to ensure that the frustoconical portion 130 and the inner cone 210 are not damaged by excessive axial forces.

Further, the length of the orthotic sleeve 200 inserted into the second hole H2 is confirmed according to the depth of the second hole H2 (e.g., the thickness of the pitch bearing), and preferably, 2/3 of the total length of the orthotic sleeve 200 may be inserted.

The material of the correction rod 100 and the correction sleeve 200 according to the present invention may be alloy steel, but is not limited thereto as long as the compressive strength and the bending strength thereof can be ensured.

The error correction apparatus according to the embodiment of the present invention may further include a driving device 300, and the driving device 300 may drive the correction sleeve 200 to move along the length direction of the correction rod 100 with respect to the correction rod 100.

As an example, as shown in fig. 1, the driving device 300 may be a hydraulic cylinder, which may include a cylinder tube 310 and a piston rod 320, the correction rod 100 is fixedly connected to the piston rod 320, and the correction sleeve 200 is connected to the cylinder tube 310 in linkage with the cylinder tube 310.

The cylinder 310 may be used to drive the correction sleeve 200 toward the first hole H1 during the correction of the misalignment to apply a pushing force to the frustum portion 130 through the correction sleeve 200. The piston rod 320 may be used to secure the drive device 300 to support the cylinder 310 as the cylinder 310 applies a force to the correction sleeve 200. For example, in the case where the correction rod 100 is fixed in the first hole H1, the piston rod 320 may be fixed to the free end of the small diameter portion 120 of the correction rod 100 to remain stationary in the length direction of the correction rod 100 while the correction sleeve 200 is advanced. The connection between the piston rod 320 and the correction rod 100 may be a threaded connection or other removable rigid connection. Specifically, during the correction, the correction rod 100 is fixed to the piston rod 320, and when the high-pressure fluid is injected into the rod chamber of the cylinder tube 310, the position of the piston rod 320 in the longitudinal direction of the correction rod 100 is fixed, and the cylinder tube 310 is movable relative to the piston rod 320 along with the injection of the hydraulic oil, so that the correction sleeve 200 is pushed by the cylinder tube 310.

The driving device 300 is not limited to the above example, and may be any manually/electrically driven linear actuator such as a jack. That is, the driving device 300 may include a first driving part and a second driving part that are relatively linearly movable. When the driving device 300 is a hydraulic cylinder as described above, the cylinder tube 310 is the second driving portion, and the piston rod 320 is the first driving portion. Further, the driving device 300 is not necessarily required, and the thrust force may be applied by striking the correction sleeve 200 with a tool during operation.

The misalignment correction apparatus according to embodiments of the present invention may further comprise a sleeve connection 410. One end of the socket connector 410 is connected to the second driving part of the driving device 300, and the other end thereof is sleeved on the end of the correction socket 200 to transmit the force provided by the driving device 300, and the socket connector 410 forms an inner cavity in which a coupling position of the correction rod 100 and the first driving part, which will be described later, is located. Further, the correction sleeve 200 is movable in the sleeve joint 410 in a direction perpendicular to the longitudinal direction of the correction sleeve 200, and is restricted from moving in the longitudinal direction of the correction sleeve 200.

Specifically, the sleeve connector 410 may be sleeved on the flange portion 220 of the orthotic sleeve 200, and the sleeve connector 410 includes limiting walls located on both sides of the flange portion 220 in the longitudinal direction of the orthotic sleeve 200, to limit movement of the flange portion 220 in the longitudinal direction of the orthotic sleeve 200. That is, the flange portion 220 is movable in the sleeve connecting body 410 in a direction perpendicular to the longitudinal direction of the correction sleeve 200, and the sleeve connecting body 410 restricts the movement of the flange portion 220 in the longitudinal direction of the correction sleeve 200.

As an example, the misalignment correction apparatus may further include a floating pressure plate 411, as shown in fig. 1, the floating pressure plate 411 may be embedded in the inner cavity of the sleeve connection body 410, a first end surface (front surface) of the floating pressure plate 411 making surface contact with an end surface of the flange portion 220 facing away from the inner cone portion 210, and a second end surface (rear surface) of the floating pressure plate 411 making contact with a stopper wall protruding from the sleeve connection body 410 to prevent the floating pressure plate 411 from being unnecessarily displaced. The floating pressing plate 411 forms a limiting space with the end limiting wall 412 of the sleeve connecting body 410, in which the flange portion 220 may be accommodated, when the sleeve connecting body 410 receives the pushing force of the driving device 300, the flange portion 220 may be pushed by the floating pressing plate 411, and when the sleeve connecting body 410 receives the pulling force of the driving device 300, the flange portion 220 may be caught by the end limiting wall 412 of the sleeve connecting body 410, thereby pulling out the correction sleeve 200. The spacing wall and end spacing wall 412 that are in contact with the back of the floating platen 411 may be collectively referred to as a spacing wall.

However, the structure of restricting the movement of the end portion of the correction sleeve 200 in the sleeve joint 410 is not limited thereto, and for example, the above-described floating pressing plate 411 may be omitted, and may be replaced with an annular plate protruding from the inner wall of the sleeve joint 410 or a plurality of protrusions separated in the circumferential direction, as long as the movement of the end portion of the correction sleeve 200 in the longitudinal direction can be restricted.

In addition, the restricted space may leave a certain margin space with the correction sleeve 200 in a direction perpendicular to the length direction of the correction sleeve 200, so as to allow the correction sleeve 200 to be movable with respect to the sleeve coupling body 410 in a direction perpendicular to the length direction of the correction sleeve 200 during the pushing of the correction sleeve 200.

As shown in fig. 4, the sleeve connection body 410 is of a split-up and down type structure, preferably formed as two semi-cylindrical structures, to facilitate installation. The two semi-cylindrical structures may be respectively fitted over the ends of the orthotic sleeve 200, spliced to each other to form the complete sleeve connection 410, and then secured together by fastening means such as screws, bolts, or the like. As described above, in order to catch the end of the orthotic sleeve 200 by the end stop wall 412 of the sleeve connector 410, the inner wall of the end of the sleeve connector 410 may be formed in a shape corresponding to the end of the orthotic sleeve 200.

Further, in order to facilitate fixing the two semi-cylindrical structures, the two semi-cylindrical structures may have fixing ribs 413 formed on sidewalls thereof, the fixing ribs 413 of the two semi-cylindrical structures may be formed corresponding to each other, and bolt holes may be formed on the fixing ribs 413, fastening by aligning the corresponding bolt holes of the two semi-cylindrical structures.

The fixing rib 413 may protrude from the inner wall of the socket connector 410 as shown in fig. 4, in which case an opening may be formed on the side wall of the two half cylinders to expose a fixing portion (e.g., a bolt hole) formed on the fixing rib 413 for fixing the two half cylinders together, so that a fastening member such as a bolt may be inserted into the bolt hole of the fixing rib 413 from the opening. In addition, the fixing rib 413 may protrude outward from the outer wall of the sleeve coupling body 410, in which case an opening may not be formed.

With the above-described sleeve joint 410, the sleeve joint 410 brings the correction sleeve 200 out when the cylinder 310 of the driving device 300 is returned, and the sleeve joint 410 can perform a stroke protection function when the cylinder 310 of the driving device 300 is pushed toward the inside of the hole.

In addition, the end of the sleeve coupling body 410 facing the driving device 300 may be coupled to the driving device 300 by any suitable means, and the coupling manner is not particularly limited as long as the pushing force applied by the cylinder tube 310 can be transmitted.

Preferably, as shown in fig. 1 and 6, the misalignment correction apparatus may further comprise a securing ring 430. The fixing ring 430 is disposed between the sleeve joint body 410 and the cylinder tube 310 of the driving device 300, and connects the sleeve joint body 410 to the cylinder tube 310. For example, both end portions of the fixing ring 430 may be coupled to the sleeve coupling body 410 and the cylinder tube 310 by means of a snap fit, screw connection, or the like, respectively.

Preferably, as shown in fig. 1, one end of the fixing ring 430 is connected to the cylinder 310 by a screw, and the other end thereof is snap-coupled to the sleeve coupling body 410, so that the sleeve coupling body 410 can rotate relative to the fixing ring 430. In this way, the sleeve connection body 410 may not be mechanically and statically connected to the fixing ring 430 and the cylinder 310, but when the cylinder 310 is unevenly applied to cause the pushing force to be not completely along the axial direction during the correction process, the sleeve connection body 410 may have a certain movement allowance with respect to the cylinder 310 through the rotatable connection with the fixing ring 430, so that the sleeve connection body 410 is not deformed or damaged by uneven stress under the condition that the cylinder 310 applies the force deviating from the axial direction. Preferably, the fixing ring 430 includes a receiving groove 431 extending in a circumferential direction, and an end of the socket connector 410 facing the driving device 300 extends radially inward and can be received in the receiving groove 431.

The misalignment correction apparatus may further comprise a rod connection means 420, wherein the rod connection means 420 may be disposed in the sleeve connection body 410, and the rod connection means 420 may connect the correction rod 100 to the piston rod 320 and drive the correction rod 100 to move along the length direction of the correction rod 100 with respect to the sleeve connection body 410. The rod connection means 420 may be connected to the ends of the correction rod 100 and the piston rod 320, respectively, by means of a snap fit, a screw connection, etc., but is not limited thereto.

Preferably, as shown in fig. 5 and 6, the rod connection means 420 may include a connection block 421, and a side of the connection block 421 facing the piston rod 320 may be formed with a screw connection portion 425 having an external screw thread, and a corresponding internal screw thread structure is formed on the piston rod 320 to fix the connection block 421 to the piston rod 320 by screwing the screw connection portion 425 into the internal screw thread of the piston rod 320. The connection block 421 may have a catching groove 422 formed therein, the end of the small diameter portion 120 of the correction lever 100 is provided with an outwardly protruding diameter-increasing portion 122, the diameter-increasing portion 122 can be fitted in the catching groove 422, and the catching groove 422 may restrict movement (e.g., movement in the radial and length directions) of the correction lever 100.

The card slot 422 is formed in a U-shape in cross section, and the diameter-increasing portion 122 is inserted into the card slot 422 and is restrained in the card slot 422. The card slot 422 may have a T-shape (i.e., have a T-shaped opening) to limit the diameter-increasing portion 122 by the head of the T-shaped card slot 422.

The diameter-increasing portion 122 may be a structure integrally formed with the small diameter portion 120, in which case the maximum outer diameter of the diameter-increasing portion 122 is smaller than the minimum inner diameter of the correction sleeve 200 to allow the correction sleeve 200 to be end-capped onto the correction rod 100 from the diameter-increasing portion 122 of the correction rod 100.

Preferably, the diameter-increasing portion 122 may be a member separately coupled to an end of the small diameter portion 120, and as shown in fig. 6 and fig. 11 to be described later, the small diameter portion 120 may have external threads (e.g., M16 threads) thereon, and the diameter-increasing portion 122 may have internal threads and be fastened to the end of the small diameter portion 120 by screw coupling and then may be inserted into the clamping groove 422 to couple the correction rod 100 to the rod coupling device 420.

The lever connection means 420 may further include a blocking plate 423, one end of the blocking plate 423 being connected to the connection block 421 through a pivot shaft and being rotatable about the pivot shaft. The shutter 423 may be disposed over the opening of the card slot 422 and may be capable of opening the card slot 422 or blocking at least a portion of the card slot 422.

As an example, the baffle 423 may be formed as a piece fixed to the rod connection device 420 by a screw, and the baffle 423 protrudes from the outer wall of the rod connection device 420 above the opening of the catching groove 422 to block at least a portion of the opening, preventing the diameter-increasing part 122 from being removed from the catching groove 422. Further, the shutter 423 may be rotated about the screw as a fixed point by adjusting the tightness of the screw, for example, as shown in fig. 6, before the diameter-increasing portion 122 is inserted into the locking groove 422, the shutter 423 is rotated to a position where the locking groove is opened (for example, a direction 90 degrees from the direction shown in fig. 6); after the diameter-increasing portion 122 is installed, the flap 423 may be pulled back over the catch (e.g., the position shown in fig. 6).

In addition, the connection block 421 may be formed with a limiting member 424, and the limiting member 424 limits the movement of the shutter 423 when the shutter 423 is positioned at a position to block at least a portion of the card slot 422. As an example, the limiting member 424 may be a spring limiting pin that may protrude into a hole formed on the shutter 423 to limit the movement of the shutter 423 when the shutter 423 is moved to above the catching groove; when the clamping groove needs to be opened, the baffle 423 can be pushed by the pushing force to press the spring limiting pin to separate the spring limiting pin from the hole, so that the baffle 423 is pulled to a position for opening the clamping groove.

However, the moving manner of the shutter 423 is not limited thereto, and for example, the shutter 423 may be formed in a folded, push-pull form as long as it can open or block at least a portion of the card slot 422.

As described above, the piston rod 320 and the correction rod 100 can be connected by the engagement of the engagement groove 422 with the diameter-increasing portion 122 and the baffle 423, and the correction device as a whole can be connected in the axial direction.

The misalignment correction apparatus according to the present invention further comprises an in-line measuring means 500 for measuring the degree of deviation of the correction rod 100 from the correction sleeve 200.

The coaxial measuring device 500 includes a dial gauge 510 and a sleeve 520, the dial gauge 510 may be disposed on the sleeve 520, and the sleeve 520 may be sleeved between the small diameter portion 120 and the correction sleeve 200. Specifically, as shown in fig. 7 and 8, the sleeve rod 520 can be fitted between the small diameter portion 120 and the correction sleeve 200, and the probe of the dial gauge 510 is inserted between the sleeve rod 520 and the correction sleeve 200 and contacts the inner wall of the correction sleeve 200. In order to fix the dial 510, a cut-out 521 may be formed at an end of the stem 520 exposed to the outside of the correction sleeve 200, and a probe of the dial 510 may be inserted into the cut-out 521 obliquely with respect to an axial direction of the stem 520, and two cut-out side walls 522 of the stem 520 forming the cut-out 521 may be fastened together by bolts (not shown) to sandwich the probe of the dial 510 between the two cut-out side walls 522, thereby fixing the dial 510 to the stem 520.

The end of the probe of the dial gauge 510 may be bent to be inserted between the stem 520 and the orthotic sleeve 200 and contact the inner wall of the orthotic sleeve 200. The sleeve rod 520 is rotated, the end of the probe of the dial indicator 510 slides along the inner wall of the correction sleeve 200 along with the rotation of the sleeve rod 520, and the numerical jump amount of the dial indicator 510 is read, so that the coaxiality of the sleeve rod 520 sleeved on the correction rod 100 and the correction sleeve 200 is measured, and whether the correction meets the preset requirement is judged. For example, the sleeve 520 may be rotated one revolution, and reading the average of the maximum and minimum values of the dial 510 to obtain coaxiality, preferably less than 0.5mm, may determine that accurate correction is achieved.

After correction using the misalignment correction apparatus, if coaxiality is calculated by estimating whether to align only by naked eyes or by measuring the degree of deviation between the correction rod and the correction sleeve by using only the fitting relation of the correction rod and the correction sleeve, the result may be inaccurate, resulting in failure to determine the correction effect after correction. The correction effect can be accurately determined by using the coaxial measuring device 500.

As shown in fig. 1, in the case where the driving device 300 is formed as a hydraulic cylinder, the misalignment correction apparatus may further include a hydraulic station 610 and an oil pipe 620, and the hydraulic station 610 may provide hydraulic pressure and include a pressure adjusting nut, a pressure gauge, and the like. The oil delivery pipe 620 may be connected to the hydraulic station 610 and the driving device 300 through quick-change joints 621, respectively, and deliver hydraulic oil from the hydraulic station 610 to the cylinder 310 of the driving device 300.

Referring to fig. 16, in the actual correction, a plurality of groups of the staggered hole correcting apparatuses may be used at the same time, and correction may be performed simultaneously by using a plurality of groups of the correcting devices.

In the case of using multiple sets of offset hole correcting devices, the oil delivery pipe 620 may include a total oil delivery pipe 622, a plurality of branch oil delivery pipes 623, and a distribution valve 630 (see fig. 16), and as an example, the plurality of branch oil delivery pipes 623 may be 6 (see fig. 16). The total oil delivery pipe 621 is connected to the hydraulic station 610, since the cylinder tube 310 may be divided into two chambers by the piston rod 320 to achieve extension and retraction of the piston rod 320 with respect to the cylinder tube 310 by delivering hydraulic oil to the two chambers, respectively, the total oil delivery pipe 622 may include two total oil delivery pipes 622 delivering hydraulic oil to the two chambers, respectively, each total oil delivery pipe 622 may correspond to a group of branch oil delivery pipes 623 including a plurality of branch oil delivery pipes 623, the plurality of branch oil delivery pipes 623 in the group of branch oil delivery pipes 623 being connected to the hydraulic cylinders, respectively, and at this time, a distribution valve 630 may be further included, the distribution valve 630 being connected between the total oil delivery pipe 622 and the plurality of branch oil delivery pipes 623 to distribute hydraulic oil from the total oil delivery pipe 622 to the plurality of branch oil delivery pipes 623 to achieve simultaneous correction of the plurality of sets of correction devices. The distribution valve 630 may include a plurality of upper oil inlet distribution valve blocks and a plurality of lower oil inlet distribution valve blocks, and the plurality of branch oil delivery pipes 623 may be connected to the corresponding upper oil inlet distribution valve blocks and lower oil inlet distribution valve blocks, respectively.

Here, the oil delivery pipe 620 may be a high pressure hose, and when the high pressure hose is disposed, excessive bending and knotting of the high pressure hose, which may generate a large back pressure, should be avoided.

The installation process of the misalignment correction apparatus according to the embodiment of the present invention will be described below with reference to fig. 9 to 15 by taking a hub and a pitch bearing of a wind turbine generator set as an example.

As shown in fig. 9 and 10, the large diameter portion of the correction rod 100 is first screwed into the first hole H1 having the internal thread of the hub, and then the correction sleeve 200 and the floating pressure plate 411 are sequentially fitted over the correction rod 100.

Next, as shown in fig. 11, a diameter-increasing portion 122 formed separately from the small diameter portion 120 is attached to an end portion of the small diameter portion 120.

Next, as shown in fig. 12, the rod connection device 420 is connected to the piston rod 320 of the driving device 300 formed as a hydraulic cylinder, and the fixing ring 430 is connected to the cylinder tube 310 of the driving device 300, and here, an assembled structure in which the rod connection device 420, the fixing ring 430 and the driving device 300 are connected together may be formed in advance. Then, before the above-described assembly structure is mounted on the correction lever 100, the shutter 423 is adjusted to a position where the catch 422 is opened, for example, in a direction 90 degrees from the direction in which the shutter 423 is shown in fig. 12, and then the catch 422 is aligned with the diameter-increasing portion 122 mounted on the small diameter portion 120, so that the diameter-increasing portion 122 is caught in the groove. After the diameter-increasing portion 122 is installed, the shutter 423 may be adjusted to a position above the card slot 422 (e.g., a position as shown in fig. 12) to block at least a portion of the card slot 422 to prevent the diameter-increasing portion 122 from being removed from the card slot 422.

Next, as shown in fig. 13 and 14, two semi-cylindrical structures of the sleeve connection body 410 having a split structure may be respectively installed between the correction sleeve 200 and the driving device 300, for example, both ends of the two semi-cylindrical structures may be respectively snap-coupled with the flange portion 220 of the correction sleeve 200 and the receiving groove 431 of the fixing ring 430 fixed to the driving device 300 thereon to assemble the complete sleeve connection body 410. Here, the floating pressing plate 411, which has been fitted over the small diameter portion 120, may be caught on the inner wall of the sleeve connecting body 410 when the sleeve connecting body 410 is mounted. Furthermore, before performing the installation of this step, it may be preferable to extend the piston rod 320 entirely, to avoid that in case the piston rod 320 is retracted into the cylinder tube 310, the distance between the cylinder tube 310 and the correction sleeve 200 is too small to accommodate the sleeve connection 410.

Next, as shown in fig. 15, the two semi-cylindrical structures may be secured together using bolts (e.g., 2-M8 bolts). Preferably, after the two semi-cylindrical structures are fixed together, the wall portion of the sleeve connection body 410 can be made to rotate freely with respect to the correction rod 100, the correction sleeve 200 and the driving device 300, so as to prevent the sleeve connection body 410 from being damaged by non-axial stress in the case where the force applied by the driving device 300 is uneven, in which case both end portions of the sleeve connection body 410 need to be connected to the correction sleeve 200 and the cylinder tube 310 of the driving device 300 by snap-fit connection means, respectively, to allow the rotation of the sleeve connection body 410.

To this end, the installation process of the body of the misalignment correction apparatus is completed, and next, the driving device 300 formed as a hydraulic cylinder may be connected to the hydraulic station 610 through the oil pipe 620, the hydraulic station 610 is operated, and correction is performed.

After the correction is completed, the offset hole correction device may be disassembled by a reverse process to the procedure described above. And the coaxiality of the corrected holes may be measured by the coaxiality measuring device 500.

It should be understood that the above description with reference to fig. 9 to 15 is merely one of the ways of installing and uninstalling the hole-correcting device as exemplified by the structure of the hole-correcting device shown in the drawings, wherein the hole-correcting device is not limited to the structure shown in fig. 9 to 15, but may include various realizable configurations of the respective members of the hole-correcting device described herein and combinations of the equivalent configurations thereof, and the method and sequence of installing the hole-correcting device are not limited to the above steps and sequences, and may be modified and changed according to the various feasible configurations of the hole-correcting device described herein or the equivalent configurations thereof and actual installation needs thereof, as long as the installation of the hole-correcting device can be realized.

According to embodiments of the present invention, multiple sets of corrective devices may be used to correct a first member and a second member (e.g., a hub and a pitch bearing of a wind turbine) formed with a plurality of holes. A method of correcting a misalignment using the misalignment correction apparatus will be described below with reference to fig. 16.

A misalignment correction method using the misalignment correction apparatus as described above may include:

installing the staggered hole correcting device on the first member and the second member to be corrected, combining the large-diameter part 110 of the correcting rod 100 in the first hole of the first member, and extending the small-diameter part 120 of the correcting rod 100 outwards from the second hole of the second member, wherein the correcting sleeve 200 is sleeved on the correcting rod 100 and extends into the second hole of the second member; the correction sleeve 200 is driven to move along the length direction of the correction rod 100 with respect to the correction rod 100 to perform correction.

In the process of correcting the plurality of holes, preferably, an initial hole is selected from the plurality of holes to be corrected, the error hole correction device is installed in the initial Kong Zhongan hole, then the auxiliary correction holes are sequentially selected at predetermined hole number intervals with the initial hole as a starting point (preferably, in the case that the plurality of holes to be corrected are distributed in a circumferential form (for example, in a pitch bearing), the plurality of auxiliary correction holes can be arranged at positions symmetrical to the center of the circumference), the error hole correction device is installed respectively, and then the error hole correction device is started to correct the initial hole and the auxiliary correction holes simultaneously.

After correction of the plurality of holes, the degree of deviation of the correction rod from the correction sleeve installed in each hole may be measured by a coaxial measuring device such as described above, and whether each hole reaches a predetermined coaxiality may be determined, thereby ensuring accurate correction of the correction device, where the coaxiality may be corrected to each hole in a range of 0mm to 0.5mm, so that a certain distance may be provided between the fastened hub and the pitch bearing, and the bolt and the installation hole, thereby avoiding the situation in which the bolt is crushed due to the erroneous hole.

As shown in fig. 16, when there is misalignment of one hole on a device having a plurality of holes, there may be a different degree of misalignment of a plurality of holes adjacent to the one hole due to the rigidity of the device itself, and in the correction process, when correction is performed only for the one hole, there may be a case where misalignment of other holes formed on the device as the one hole is corrected. Thus, according to embodiments of the present invention, multiple sets of corrective devices may be used simultaneously to correct to ensure alignment of multiple holes throughout the device.

According to another embodiment of the present invention, it may not be required that the taper of the frustoconical portion 130 be different from the taper of the inner frustoconical portion 210. At this time, the error correction device may include the correction device, the driving device 300, the fixing ring 430, the rod connection device 420, and the sleeve connection body 410, wherein the correction device may include the correction rod 100 and the correction sleeve 200, but the taper of the frustum portion 130 may be the same as or different from the taper of the inner cone portion 210. The driving device 300, the fixing ring 430, the rod connection device 420, and the socket connection body 410 may have the same structure as described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims

1. A staggered hole correction apparatus, comprising an orthotic device comprising:

a correction rod (100), the correction rod (100) comprising a large diameter portion (110), a small diameter portion (120), and a frustum portion (130) between the large diameter portion (110) and the small diameter portion (120);

a correction sleeve (200), the correction sleeve (200) being capable of being sleeved on the correction rod (100), the minimum inner diameter of the correction sleeve (200) being larger than the outer diameter of the small diameter portion (120), the correction sleeve (200) having an inner cone portion (210) corresponding to the frustum portion (130), the inner cone portion (210) being in contact with the frustum portion (130) and being capable of applying a pushing force to the frustum portion (130),

wherein the taper of the frustum portion (130) is different from the taper of the inner cone portion (210), wherein the large diameter portion (110) is used for being inserted into a first hole to be corrected, the frustum portion (130) and the small diameter portion (120) are used for being inserted into a second hole to be corrected, and the correction sleeve (200) can generate radial displacement with the correction rod (100) while moving axially so as to eliminate dislocation between the first hole and the second hole.

2. The misalignment correction apparatus according to claim 1 wherein the taper of the frustum portion (130) is greater than the taper of the inner taper (210) or the taper of the frustum portion (130) is less than the taper of the inner taper (210).

3. The device according to claim 1, characterized in that it further comprises a driving means (300), said driving means (300) comprising a first driving portion and a second driving portion capable of relative linear movement, said correction rod (100) being fixedly connected to said first driving portion, said correction sleeve (200) being connected to said second driving portion, in linkage with said second driving portion.

4. A misalignment correction apparatus according to claim 3 wherein the drive means (300) is a hydraulic cylinder, the first drive portion is a piston rod (320) and the second drive portion is a cylinder (310).

5. A device according to claim 3, characterized in that the device comprises a sleeve connection body (410), one end of the sleeve connection body (410) is connected to the second driving part, the other end is sleeved at the end of the correction sleeve (200), the sleeve connection body (410) forms an inner cavity, the combined position of the correction rod (100) and the first driving part is located in the inner cavity, and the correction sleeve (200) can move in the sleeve connection body (410) along the direction perpendicular to the length direction of the correction sleeve (200) and is limited to move along the length direction of the correction sleeve (200).

6. The misalignment correction apparatus according to claim 5 wherein an end of the correction sleeve (200) facing away from the inner cone (210) is formed with an outwardly protruding flange portion (220), the sleeve connection (410) including limiting walls on both sides of the flange portion (220) in a length direction of the correction sleeve (200) limiting movement of the flange portion (220) in the length direction of the correction sleeve (200).

7. The misalignment correction apparatus according to claim 6 further comprising a floating platen (411) embedded in an inner cavity of the sleeve connection (410), a first end face of the floating platen (411) making surface contact with an end face of the flange portion (220) facing away from the inner cone portion (210), a second end face of the floating platen (411) making contact with the limiting wall.

8. The misalignment correction apparatus according to claim 5 wherein said sleeve connection (410) is a split-up and split-down structure.

9. A device according to claim 3, characterized in that the device further comprises a rod connection means (420), the rod connection means (420) comprising a connection block (421), the connection block (421) being fixed to the first driving part, a clamping groove (422) being formed in the connection block (421), the end of the small diameter part (120) being provided with an outwardly protruding diameter increasing part (122), the diameter increasing part (122) being capable of being embedded in the clamping groove (422).

10. The misalignment correction apparatus according to claim 9 wherein the rod connection (420) further comprises a baffle (423), the baffle (423) being disposed on the connection block (421) and being capable of opening or blocking at least a portion of the clamping groove (422).

11. The misalignment correction apparatus according to claim 10 wherein one end of the baffle (423) is connected to the connection block (421) through a pivot shaft, being rotatable about the pivot shaft.

12. The device according to claim 5, further comprising a stationary ring (430), the stationary ring (430) being connected to the second drive part, being arranged between the sleeve connection body (410) and the second drive part, the sleeve connection body (410) being coupled to the stationary ring (430) rotatable with respect to the stationary ring (430).

13. The misalignment correction apparatus according to claim 12 wherein the securing ring (430) includes a circumferentially extending receiving groove (431), an end of the collet connector (410) facing the drive means (300) extending radially inward and receivable in the receiving groove (431).

14. The misalignment correction apparatus according to claim 1 further comprising a coaxial measuring device (500) measuring the degree of deviation of the correction rod (100) from the correction sleeve (200), the coaxial measuring device (500) comprising a dial gauge (510) and a sleeve rod (520), the sleeve rod (520) being able to be sleeved between the small diameter portion (120) and the correction sleeve (200), the dial gauge (510) being provided on the sleeve rod (520), a probe of the dial gauge (510) being able to be in contact with an inner wall of the correction sleeve (200).

15. The misalignment correction apparatus according to claim 1 wherein taper of the frustum portion (130) is less than 1:10 and taper of the inner taper portion (210) is less than 1:13, the large diameter portion (110) being formed with external threads.

16. A method of correcting a miscell, the method comprising:

mounting the staggered hole correcting device according to any one of claims 1-15 on a first member and a second member to be corrected, so that the large diameter portion (110) of the correcting rod (100) is combined in a first hole of the first member, the small diameter portion (120) of the correcting rod (100) protrudes outwards from a second hole of the second member, and the correcting sleeve (200) is sleeved on the correcting rod (100) and protrudes into the second hole of the second member;

The correction sleeve (200) is driven to move along the length direction of the correction rod (100) relative to the correction rod (100) so as to correct.

17. The method of correcting a miscell of claim 16, further comprising: after correction, the degree of deviation of the correction rod (100) from the correction sleeve (200) of the miscell correction apparatus is measured to determine whether the corrected first and second holes reach a predetermined coaxiality.

18. A device for correcting a wrong hole is characterized by comprising a correcting device, a driving device (300), a fixing ring (430), a rod connecting device (420) and a sleeve connecting body (410),

the orthotic device comprises:

The driving device (300) comprises a first driving part and a second driving part which can relatively linearly move,

the stationary ring (430) is connected to the second driving part,

the rod connection device (420) comprises a connection block (421), the connection block (421) is fixed to the first driving part, a clamping groove (422) is formed in the connection block (421), the end part of the small-diameter part (120) is provided with an outward protruding diameter-increasing part (122), the diameter-increasing part (122) can be embedded in the clamping groove (422),

one end of the sleeve connecting body (410) is combined to the fixed ring (430) and is linked with the fixed ring (430), the other end of the sleeve connecting body (410) is sleeved at the end part of the correction sleeve (200), the correction sleeve (200) can move in the sleeve connecting body (410) along the direction perpendicular to the length direction of the correction sleeve (200) and is limited to move along the length direction of the correction sleeve (200), an inner cavity is formed in the sleeve connecting body (410), and the diameter-increasing part (122) and the connecting block (421) are located in the inner cavity.

19. The misalignment correction apparatus according to claim 18 wherein the sleeve connection (410) is rotatable relative to the stationary ring (430), the sleeve connection (410) being of a split-up and split-down construction.

20. The misalignment correction apparatus according to claim 19 wherein the drive means (300) is a hydraulic cylinder, the first drive portion is a piston rod (320) and the second drive portion is a cylinder (310).

21. The misalignment correction apparatus according to claim 20 wherein an end of the correction sleeve (200) facing away from the inner cone (210) is formed with an outwardly protruding flange (220), the sleeve connection (410) includes limiting walls on both sides of the flange (220) in a length direction of the correction sleeve (200), movement of the flange (220) in the length direction of the correction sleeve (200) is limited, the misalignment correction apparatus further includes a floating platen (411) embedded in an inner cavity of the sleeve connection (410), a first end face of the floating platen (411) is in surface contact with an end face of the flange (220) facing away from the inner cone (210), and a second end face of the floating platen (411) is in contact with the limiting walls.

22. The hole-misplacing correction apparatus as defined in claim 18, further comprising an in-line measurement device (500) for measuring the degree of deviation of the correction rod (100) from the correction sleeve (200), the in-line measurement device (500) comprising a dial gauge (510) and a sleeve rod (520), the sleeve rod (520) being capable of being sleeved between the small diameter portion (120) and the correction sleeve (200), the dial gauge (510) being disposed on the sleeve rod (520), a probe of the dial gauge (510) being capable of contacting an inner wall of the correction sleeve (200).