Locking device and wind generating set

Abstract

The invention provides a locking device and a wind generating set, and the locking device comprises a locking part which comprises a pin sleeve installation part; the pin sleeve is arranged in the pin sleeve mounting part and is provided with a locking hole; the insertion end of the locking pin can be inserted into the locking hole of the pin sleeve, so that the locking pin is locked through the locking part; and the pin sleeve supporting part is arranged on the outer side of the pin sleeve so as to support the pin sleeve to rotate around the central axis of the pin sleeve relative to the locking part. According to the locking device disclosed by the invention, the self-adaptive adjustment capability of device operation is improved.

Description

Technical Field

[0001] The invention relates to the field of wind energy, and in particular to a locking device and a wind generator set. Background Art

[0002] A wind turbine is a clean energy device that converts wind energy into electrical energy. When the transmission system is assembled or when maintenance is performed in various devices containing the transmission system, maintenance personnel must lock the transmission system to prevent its rotating parts from rotating in order to ensure the safety of the personnel.

[0003] In the locking device used to lock the rotation system in the prior art, the locking device includes a locking pin and a locking part, a locking hole is directly formed on the locking part, or a pin sleeve can be embedded in the locking part (a bolt hole is provided on the outer periphery of the pin sleeve, and is fixedly connected to the locking part by bolts) and has a locking hole in the center of the pin sleeve, and the locking pin can be inserted into the locking hole to realize the locking operation of the locking device.

[0004] During the locking operation, in order to allow the locking pin to be smoothly inserted into the pin sleeve, it is necessary to ensure that the locking pin and the locking hole of the locking device are kept accurately aligned.

[0005] However, in actual operation, since multiple sets of locking devices are usually provided in the peripheral direction of the transmission system (such as the main shaft, etc.), it is difficult to simultaneously ensure that the locking pins and locking holes of the multiple sets of locking devices are precisely aligned. In addition, due to operational errors during installation and operation, displacement or deformation of the associated devices, the locking pins or locking parts may also be tilted, making it difficult to precisely align.

[0006] The above phenomenon of being unable to accurately align seriously affects the operational stability of the locking device, increases the difficulty of the locking operation, and also brings hidden dangers to the operational stability and reliability of the wind turbine generator set. Summary of the invention

[0007] One of the main purposes of the present invention is to provide a locking device and a wind turbine generator set having the locking device, wherein the locking device has a pin sleeve adaptive adjustment structure.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] According to one aspect of the present invention, a locking device is provided, comprising: a locking portion, the locking portion comprising a pin sleeve mounting portion; a pin sleeve, the pin sleeve being arranged in the pin sleeve mounting portion and having a locking hole; a locking pin, the insertion end of the locking pin being capable of being inserted into the locking hole of the pin sleeve so that the locking pin is locked by the locking portion; and a pin sleeve supporting portion, the pin sleeve supporting portion being arranged on the outside of the pin sleeve to support the pin sleeve so that it can rotate relative to the locking portion around the central axis of the pin sleeve.

[0010] The pin sleeve supporting portion may include a first bearing assembly disposed between a radially outer side of the pin sleeve and the locking portion to support the pin sleeve to rotate in the pin sleeve mounting portion.

[0011] The locking device may also include a first fixing plate, which is fixedly attached to the axial first side of the locking portion and limits the pin sleeve and the first bearing assembly in the pin sleeve mounting portion, wherein the pin sleeve mounting portion is formed in a hole shape and has an opening located on the axial first side of the locking portion, and the axial first side is close to the locking pin.

[0012] The inner ring of the first bearing assembly can be sleeved on the radial outer side of the pin sleeve, and the outer ring of the first bearing assembly can be installed to the radial inner side of the pin sleeve mounting portion of the locking portion; the locking device may also include a second fixing plate and a third fixing plate, the second fixing plate can be fixedly attached to the axial first side of the locking portion and abut against the outer ring of the first bearing assembly, and the third fixing plate can be fixedly attached to the axial first side of the pin sleeve and abut against the inner ring of the first bearing assembly.

[0013] The axial first side and the axial second side of the outer ring of the first bearing assembly can be limited by the second fixing plate and the locking portion respectively, and the locking portion includes a first step portion, which abuts against the axial second side of the outer ring of the first bearing assembly. The axial first side and the axial second side of the inner ring of the first bearing assembly can be limited by the third fixing plate and the pin sleeve respectively, and the pin sleeve includes a second step portion, which abuts against the axial second side of the inner ring of the first bearing assembly.

[0014] The pin sleeve supporting portion may further include a third bearing assembly disposed between the first axial side of the pin sleeve and the first fixing plate.

[0015] The pin sleeve supporting portion may further include a third bearing assembly disposed between the first fixing plate and the third fixing plate.

[0016] The first bearing assembly may include a tapered roller bearing, a deep groove ball bearing, or an angular contact ball bearing.

[0017] The pin sleeve supporting portion may further include a second bearing assembly disposed between an axial second side of the pin sleeve and the locking portion.

[0018] The axial first side of the second bearing assembly may be embedded in the axial first side of the pin sleeve, and the axial second side of the second bearing assembly may be embedded in the axial inner side surface of the pin sleeve mounting portion of the locking portion.

[0019] The pin sleeve and the pin sleeve mounting portion may be clearance-fitted, and the pin sleeve supporting portion may further include a self-lubricating coating, wherein the self-lubricating coating is disposed on at least one of the surfaces of the pin sleeve and the pin sleeve mounting portion that contact each other.

[0020] The pin sleeve supporting portion may include a ball, which is arranged between the pin sleeve and the locking portion. A rolling groove may be formed on at least one of the pin sleeve and the locking portion to accommodate the ball, and the pin sleeve is supported to rotate relative to the locking portion by the ball.

[0021] The locking device may also include a rotation limit piece for rotationally limiting the pin sleeve. A limiting groove may be formed on the second axial side of the pin sleeve, and the limiting groove has an arc-shaped track. The rotation limit piece may be in the shape of a rod, one end of which is inserted into the limiting groove and the other end is connected to the locking part.

[0022] The pin sleeve may be in the shape of an annular cylinder, the radial outer side wall of the annular cylinder may have a cylindrical shape, the inner hollow space of the annular cylinder may be a locking hole, having a conical shape, with the side with a larger opening facing the locking pin, and the insertion end of the locking pin may have a corresponding conical shape.

[0023] The radial inner surface of the locking hole of the pin sleeve may have a chamfered corner portion connected to the end surface of the axial first side of the pin sleeve, and the radial outer peripheral surface of the insertion end may have a chamfered corner portion connected to the axial end surface of the insertion end.

[0024] According to one aspect of the present invention, a wind turbine generator set is provided, comprising the locking device as described above, wherein the locking portion is arranged on one of the fixed axis and the moving axis of the wind turbine generator set, and the locking pin is arranged on the other of the fixed axis and the moving axis of the wind turbine generator set.

[0025] The locking device and the wind turbine generator set according to the present invention have a pin sleeve self-adaptive adjustment structure.

[0026] According to the locking device and wind turbine generator set of the present invention, the pin sleeve can be adaptively rotated according to the inclination angle or insertion angle of the locking pin and / or the locking hole during the locking and insertion operation, thereby realizing adaptive adjustment. In addition, even if surface deformation is formed on the surface of the locking pin and / or the locking hole due to friction, the pin sleeve can be adaptively rotated, thereby realizing adaptive adjustment.

[0027] According to the locking device and wind turbine generator set of the present invention, during the locking operation, even if the pin sleeve or the locking pin is tilted or misaligned, the insertion and locking operation can be successfully completed, thereby reducing the difficulty of aligning and adjusting the locking device and improving the stability of the locking operation.

[0028] The locking device and the wind turbine generator set according to the present invention can reduce wear and noise during the locking operation, thereby increasing the service life.

[0029] The locking device and wind turbine generator set according to the present invention can prevent damage such as jamming or crushing during the locking process, thereby reducing operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or other objects and advantages of the present invention will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 A schematic assembly diagram of a locking device of a transmission system of a wind turbine generator system according to an exemplary embodiment of the present invention is shown.

[0032] Figure 2 yes Figure 1 A cross-sectional view taken along line AA to show the cross-section of the locking device.

[0033] Figure 3 yes Figure 2 An enlarged view of part I is provided to illustrate the structure of the locking device.

[0034] Figure 4 yes Figure 3 An enlarged view of part J is provided to show the local structure of the locking device.

[0035] Figure 5 yes Figure 3 A cross-sectional view of the locking device taken along line BB.

[0036] Figure 6 It is a perspective view of a locking pin of a locking device.

[0037] Figure 7 It is a three-dimensional view of the pin sleeve of the locking device.

[0038] Figure 8 yes Figure 7A side view of the pin sleeve viewed from the F direction.

[0039] Fig. 9 yes Figure 7 A cross-sectional view of the pin sleeve taken along line CC.

[0040] Fig.10 yes Figure 7 A cross-sectional view of the pin sleeve taken along line DD.

[0041] Fig.11 and Fig.12 Schematic diagram of pin sleeve force analysis in various exemplary states of a locking device according to an exemplary embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 3-locking device, 10-locking part, 11-pin sleeve mounting part, 15-first step part, 16-third step part, 20-pin sleeve, 21-locking hole, 22-main body, 23-second step part, 24-bolt hole, 25-limiting groove, 26-first mounting groove, 30-locking pin, 31-insertion end, 32-locking pin mounting part, 40-pin sleeve supporting part, 41-first bearing assembly, 42-second bearing assembly, 43-third bearing assembly, 51-first fixing plate, 52-second fixing plate, 53-third fixing plate, 61-first bolt, 62-second bolt, 63-third bolt, 65-limiting member, 7-outer shaft, 71-first mounting flange, 8-inner shaft, 81-second mounting flange. DETAILED DESCRIPTION

[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that embodiments of the present invention are limited to the embodiments set forth herein. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0045] For the convenience of description, directional terms such as front, back, up, down, inside, and outside are used to describe the structure and operation method of the device. Front and back may respectively refer to the positive direction and negative direction of the axial direction in the accompanying drawings, up and down may respectively refer to the positive direction and negative direction of the height direction or thickness direction in the accompanying drawings, and radial directions outward and inward may respectively refer to the direction away from the central axis and the direction toward the central axis in the radial direction.

[0046] The X direction of the component (e.g., the pin sleeve) in the drawings may be the first direction, the thickness direction, or the axial direction, the Y direction is perpendicular to the X direction and may be the second direction or the radial direction, and the Z direction is perpendicular to the X direction and the Y direction and may be the third direction or the tangential direction. However, the device is not limited to this, and the device may be flipped forward and backward, upside down, or positioned at other angles.

[0047] In the prior art, during the assembly, maintenance or shutdown of a wind turbine generator set, it is usually necessary to lock the rotating parts of the transmission system.

[0048] As for the locking devices of the transmission systems of wind turbines in the prior art, multiple sets of locking devices are usually arranged on the periphery of the transmission system of the wind turbine, which makes it difficult to simultaneously achieve complete axial alignment of the mating parts of the multiple sets of locking devices, and during the operation of the transmission system, the operation of the transmission system itself or the interaction of other components will inevitably cause deflection or displacement, or even wear, of the relevant mating parts of the locking devices, making it even more difficult to achieve complete alignment and stable insertion and locking of the mating parts during the locking operation.

[0049] Since the locking hole of the locking device of the prior art is directly formed on the locking part or provided by a fixed pin sleeve, when performing the locking operation, once the central axis of the locking pin and / or the locking hole is tilted or the central axis of the locking pin and the locking hole is misaligned, or the surface deformation caused by the wear of the locking pin and the locking hole occurs, it is difficult to smoothly insert and lock. Moreover, during the locking process of inserting the locking pin, it is also easy to cause further wear or noise problems of the locking pin and the pin sleeve, or even problems such as jamming or crushing.

[0050] According to the embodiments of the present invention, the structure of the locking device is improved, so that the above-mentioned problems can be effectively solved.

[0051] A wind turbine generator set and a locking device thereof according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] Reference Figure 1 , a wind turbine generator set according to an embodiment of the present invention may include a transmission system and a locking device 3 for locking the transmission system.

[0053] The transmission system of the wind turbine generator set may include an outer shaft 7 and an inner shaft 8. The outer shaft 7 may be sleeved on the outer side of the inner shaft 8, and a transmission bearing assembly (not shown) may be provided between the outer shaft 7 and the inner shaft 8. For example, the transmission bearing assembly may be provided at two ends in the axial direction of the shaft system transmission structure to support the rotation between the outer shaft 7 and the inner shaft 8.

[0054] According to an embodiment of the present invention, one of the outer shaft 7 and the inner shaft 8 may be a movable shaft, and the other may be a fixed shaft. As an example, the outer shaft 7 may be a movable shaft, and the inner shaft 8 may be a fixed shaft, or the outer shaft 7 may be a fixed shaft, and the inner shaft 8 may be a movable shaft. The outer shaft 7 and the inner shaft 8 may have different forms, and their lengths and cross-sectional forms are not limited.

[0055] The moving shaft can be connected to the impeller and rotate along with the impeller, and the fixed shaft can be connected to the nacelle of the wind turbine generator set.

[0056] In other words, the outer shaft 7 may be connected to one of the impeller and the nacelle of the wind turbine generator set, and the inner shaft 8 may be connected to the other of the impeller and the nacelle of the wind turbine generator set.

[0057] The locking device according to the embodiment of the present invention can be used to achieve locking of the transmission system between the outer shaft 7 and the inner shaft 8 .

[0058] Reference Figure 1 The wind turbine generator set according to the embodiment of the present invention may include one or more sets of locking devices 3. The multiple sets of locking devices 3 may be arranged at one end of the outer shaft 7 and may be located on the outer periphery of the inner shaft 8.

[0059] Specifically, a first mounting flange 71 may be provided at one end of the outer shaft 7 , and a second mounting flange 81 may be provided on the outer periphery of the inner shaft 8 . Therefore, the locking device 3 may be installed by means of the mounting flanges 71 and 81 .

[0060] The following will refer to Figures 2 to 10 The composition structure and installation method of the locking device 3 according to the embodiment of the present invention will be described in detail.

[0061] Reference Figure 2 The locking device 3 according to the embodiment of the present invention may include a locking portion 10 , a pin sleeve 20 , a locking pin 30 and a pin sleeve supporting portion 40 .

[0062] Specifically, the locking portion 10 may include a pin sleeve installation portion 11. The pin sleeve 20 may be disposed in the pin sleeve installation portion 11 and have a locking hole 21. The insertion end 31 of the locking pin 30 can be inserted into the locking hole 21 of the pin sleeve 20, so that the locking pin 30 is locked by the locking portion 10.

[0063] In addition, the pin sleeve supporting portion 40 may be disposed outside the pin sleeve 20 to support the pin sleeve 20 so as to be rotatable relative to the locking portion 10 around the central axis of the pin sleeve 20 .

[0064] With the locking device provided by the embodiment of the present invention, the pin sleeve 20 can be installed on the locking part 10, and when the locking pin 30 can be inserted into the pin sleeve 20, the transmission system is locked, and when the locking pin 30 is removed from the pin sleeve 20, the transmission system is unlocked. At the same time, in the case where the locking pin and / or the pin sleeve is tilted, worn or otherwise difficult to be accurately aligned and inserted, the pin sleeve support part 40 provided on the outside of the pin sleeve 20 can support the pin sleeve 20 to rotate as the locking pin is inserted into the pin sleeve during the locking action.

[0065] The specific structure and installation method of each component of the locking device 3 (locking part 10, pin sleeve 20, locking pin 30, pin sleeve supporting part 40, etc.) will be described in detail below.

[0066] As described above, the transmission system of the wind turbine generator set may include a fixed shaft and a movable shaft. Therefore, when the locking device 3 is applied to the locking of the transmission system of the wind turbine generator set, the locking portion 10 may be arranged on one of the fixed shaft and the movable shaft of the wind turbine generator set, and the locking pin 30 may be arranged on the other of the fixed shaft and the movable shaft.

[0067] For example, the locking portion 10 of the locking device 3 may be disposed at the end of the outer shaft 7 and may be disposed on the first mounting flange 71 of the outer shaft 7. The locking pin 30 of the locking device 3 may be disposed on the outer circumference of the inner shaft 8 and may be disposed on the second mounting flange 81 of the inner shaft 8.

[0068] As an example, a plurality of locking portions 10 may be disposed at predetermined intervals on the first mounting flange 71 , and correspondingly, a plurality of locking pins 30 may be disposed at predetermined intervals on the second mounting flange 81 .

[0069] The locking portion 10 and the first mounting flange 71 may be formed integrally with each other, that is, a portion of the first mounting flange 71 may serve as the locking portion 10 .

[0070] According to an embodiment of the present invention, the pin sleeve 20 is rotatably disposed in the pin sleeve mounting portion 11 , and the pin sleeve 20 has a locking hole 21 so that the locking pin 30 can be inserted into the locking hole 21 .

[0071] The locking pin 30 can move in its axial direction, that is, move toward the locking portion 10, or move away from the locking portion 10. The locking portion 10 may be provided with a locking hole 21 (which will be referred to below). Figure 4 Detailed description) for the insertion of the locking pin 30, thereby achieving a locked state.

[0072] As an example, in order to realize the installation of the locking pin 30, a locking pin installation portion 32 may be provided on the second installation flange 81, and the locking pin installation portion 32 may include a through hole, so that the locking pin 30 can pass through the locking pin installation portion 32 and perform linear movement along the axial direction thereof. The axial direction of the locking pin 30 may be parallel to the axial direction of the rotating system, that is, the axial direction of the inner shaft 8.

[0073] The pin bushing 20 of the locking device 3 according to the embodiment of the present invention is rotatable on the locking portion 10 around the central axis of the pin bushing 20 .

[0074] Therefore, when the locking pin 30 is inserted into the locking hole 21 for a locking operation, the pin sleeve 20 can adjust the contact fit between the locking pin 30 and the pin sleeve 20 by adaptively rotating, thereby easily inserting the locking pin 30 .

[0075] Therefore, even if misalignment occurs due to wear, tilt or other reasons, the locking pin can be easily inserted into the locking hole of the pin sleeve, reducing friction or noise between the locking pin and the pin sleeve, and avoiding jamming or crushing of the locking pin and the pin sleeve.

[0076] The effect of the pin sleeve 20 and the locking pin 30 of the locking device 3 according to the embodiment of the present invention being inserted in cooperation through the pin sleeve supporting portion 40 will be described in detail below.

[0077] The locking device 3 according to the embodiment of the present invention includes a pin sleeve support portion 40, which can be arranged outside the pin sleeve 20 to support the pin sleeve 20 so that it can rotate relative to the locking portion 10 around the central axis of the pin sleeve 20. Here, the central axis of the pin sleeve 20 can refer to the central axis of the radial outer peripheral surface of the pin sleeve 20, which can coincide with the central axis of the radial inner surface of the pin sleeve mounting portion 11.

[0078] By providing the pin sleeve support portion 40, when the insertion end 31 of the locking pin 30 is driven to be inserted into the locking hole 21, the relative position or angle between the insertion end 31 of the locking pin 30 and the locking hole 21 of the pin sleeve 20 can be adaptively adjusted by rotating the pin sleeve 20, thereby avoiding wear, noise and jamming of the pin sleeve 20 and the locking pin 30 that may be caused by tilted or misaligned insertion.

[0079] Specifically, when wear or inclination or misalignment in the insertion direction occurs, for example, the central axis of at least one of the inner surface of the locking hole 21 and the radial outer surface of the insertion end 31 is inclined relative to the central axis of the pin sleeve 20, so that when the locking pin 30 and the pin sleeve 20 are in contact during the insertion locking operation, the rotation of the pin sleeve 20 can be driven by the torsional torque provided by the contact between the two (hereinafter referred to as Fig.11 and Fig.12 To perform force analysis for an exemplary situation), release the extrusion force and adaptively adjust the alignment of the pin sleeve 20 and the locking pin 30 to avoid possible friction, noise, jamming and other problems.

[0080] The configurations of the pin bushing 20 and the locking pin 30 will be described in detail below.

[0081] As a preferred example, the pin sleeve 20 may be an annular cylinder, the radial outer side wall of which has a cylindrical shape, and the inner hollow space of the annular cylinder is the locking hole 21. The locking hole 21 may have a conical shape, and the side with a larger opening faces the locking pin 30.

[0082] In addition, as an example, the insertion end 31 of the locking pin 30 may have a corresponding tapered shape. That is, the insertion end 31 of the locking pin 30 may be adapted to the tapered shape of the locking hole 21 so that the insertion end 31 of the locking pin 30 can be fully inserted into the locking hole 21.

[0083] When the locking hole 21 of the pin sleeve 20 and / or the insertion end 31 of the locking pin 30 have a tapered shape, since the locking hole 21 of the pin sleeve 20 and the insertion end 31 of the locking pin 30 are formed with an inclined portion, when the locking pin 30 is inserted and the insertion end 31 and the locking hole 21 come into contact, it is easier to cause the central axis of the locking hole 21 and / or the central axis of the insertion end 31 of the locking pin 30 to tilt relative to the central axis of the pin sleeve 20, or misalignment between the central axis of the locking hole 21 and the central axis of the insertion end 31 of the locking pin 30. Therefore, it is easy to form an inclined pressure to provide a torsional moment to drive the rotation of the pin sleeve 20, and therefore, the adaptive adjustment of the pin sleeve 20 can be achieved more easily and more sensitively.

[0084] As an example, the corner portion where the inner surface (radial inner surface) of the locking hole 21 of the pin sleeve 20 is connected to the end surface (left end surface in the figure) of the first axial side of the pin sleeve 20 may have a rounded shape to facilitate the insertion operation of the insertion end 31 of the locking pin 30. In addition, the corner portion formed by the rounding can be used to contact and interact with the radial outer peripheral surface of the insertion end 31 to facilitate the adaptive adjustment of the pin sleeve 20 and improve the sensitivity of the adjustment.

[0085] As another example, the corner portion where the radial outer peripheral surface of the insertion end 31 of the locking pin 30 is connected to the axial end surface (right end surface in the figure) of the insertion end 31 may have a rounded shape to facilitate the insertion operation of the insertion end 31 of the locking pin 30. In addition, the rounded corner portion can be used to contact and interact with the radial inner surface of the pin sleeve 20 to facilitate the adaptive adjustment of the pin sleeve 20 and improve the sensitivity of the adjustment.

[0086] The following will refer to Fig.11 and Fig.12 A force analysis of an exemplary mode of action of the adaptive adjustment of the bushing 20 is described in detail.

[0087] During the locking and inserting operation, the central axis of the locking pin 30 may be tilted relative to the central axis of the pin sleeve 20, or the central axis of the locking hole 21 may be tilted relative to the central axis of the pin sleeve 20 due to wear, installation or processing, or the insertion direction of the locking pin 30 may be tilted relative to the central axis of the pin sleeve 20 during insertion. Therefore, as the insertion operation proceeds, when the insertion end 31 of the locking pin 30 comes into contact with the locking hole 21, the radial outer surface of the insertion end 31 and the inner surface of the locking hole 21 squeeze each other to generate pressure and friction. In this case, the pressure and friction applied to the pin sleeve 20 by the locking pin 30 can cause the pin sleeve 20 to rotate around its central axis.

[0088] exist Fig.11In the example of FIG. 1 , the radial outer surface of the insertion end 31 of the locking pin 30 includes an inclined portion and the radial outer surface contacts the outer area of ​​the inner surface of the locking hole 21 of the pin sleeve 20. Fig.11 As shown, the outer area of ​​the inner surface of the locking hole 21 may have a rounded shape to facilitate the alignment and insertion of the insertion end 31 and to prevent damage caused by edges of right angles. However, the embodiment is not limited thereto.

[0089] As another example, the shape of the radial outer surface of the insertion end 31 of the locking pin 30 may not include an inclined portion (for example, the insertion end 31 may have a cylindrical shape), or the shape of the inner surface of the locking hole 21 of the pin sleeve 20 may include an inclined portion (for example, the insertion end 31 may have a conical shape). Regardless of how the shape of the radial outer surface of the insertion end 31 and the shape of the inner surface of the locking hole 21 are changed, as long as a torsional torque can be provided to the pin sleeve 20 to achieve rotation of the pin sleeve 20 when the locking pin 30 is inserted.

[0090] As an example, the torsional moment may be provided by applying an inclined pressure to the locking hole 21 of the pin sleeve 20. For example, during the insertion operation, if the central axis of the insertion end 31 of the locking pin 30 or the central axis of the locking hole 21 is inclined relative to the central axis of the pin sleeve 20, as the insertion end 31 contacts the locking hole 21 of the pin sleeve 20, an inclined pressure may be applied to the pin sleeve 20.

[0091] In this case, with respect to the tilting pressure applied by the insertion end 31 of the locking pin 30 to the pin sleeve 20, the tilting pressure F can be decomposed into three components in three directions perpendicular to each other (i.e., F 轴向 、F 径向 and F 切向 ), F 轴向 、F 径向 and F 切向 The pin sleeve 20 may be parallel to the axial direction, radial direction and tangential direction (ie, Fig.11 The X, Y and Z directions in the figure).

[0092] F 切向 It can be the driving force that causes the pin sleeve 20 to rotate. 轴向 and F 径向 The compressive forces applied to the pin bushing 20 may be axial and radial.

[0093] In addition, in order to prevent the extrusion force F applied to the pin sleeve 20 轴向 and F 径向 To solve the problems of increased rotational friction or even jamming, a pin sleeve support portion (such as a bearing assembly, a ball or a self-lubricating coating, etc.) can be provided on the outer side of the pin sleeve 20 to support the pin sleeve 20 to rotate around its central axis.

[0094] For example, the pin sleeve support portion may be disposed between the radial periphery of the pin sleeve 20 and the locking portion 10, i.e., the axial inner side of the pin sleeve, and / or a pin sleeve support portion may also be disposed on the axial outer side of the pin sleeve 20 to facilitate the rotation of the pin sleeve 20 around its central axis.

[0095] although Fig.11 Only an example is shown in which the pin bushing 20 is rotated due to the tilting pressure, but the embodiment is not limited thereto.

[0096] As another example, the pin sleeve 20 can also be rotated by the inclined friction force. For example, the direction of the friction force can be inclined, and similar to the above analysis of the inclined pressure F, the inclined friction force can be decomposed into a tangential component (the axial direction and diameter perpendicular to the central axis of the pin sleeve 20), thereby providing a rotational torque (the tangential component of the friction force×the vertical distance from the force point to the central axis of the pin sleeve), so that the pin sleeve 20 can rotate.

[0097] although Fig.11 FIG. 2 shows a case where the central area of ​​the inner surface of the locking hole 21 of the pin sleeve 20 does not have an inclined portion, but the embodiment is not limited thereto. For example, the central area of ​​the inner surface of the locking hole 21 may also have an inclined portion (see, for example, FIG. 21 ). Fig.12 ), and can interact with the insertion end 31 of the locking pin 30 in a similar manner as described above to generate a driving force that causes the pin sleeve 20 to rotate.

[0098] exist Fig.12 In the example of FIG. 1 , the inner surface of the locking hole 21 of the pin sleeve 20 includes an inclined portion, and the inclined portion of the inner surface of the locking hole 21 contacts the outer region (region facing the locking hole 21) of the radial outer surface of the insertion end 31 of the locking pin 30. As an example, the edge of the outer region of the radial outer surface of the insertion end 31 may have a rounded shape to facilitate the alignment and insertion of the insertion end 31 and to prevent damage problems that may be caused by edges of right-angle shapes.

[0099] exist Fig.12 In the example of , a portion of the insertion end 31 of the locking pin 30 may be inserted into the locking hole 21 of the pin sleeve 20 and come into contact with the inner surface of the locking hole 21. Therefore, when the insertion continues, the insertion end 31 of the locking pin 30 may apply an inclined pressure F to the pin sleeve 20.

[0100] As for the tilting pressure F applied by the insertion end 31 of the locking pin 30 to the pin sleeve 20, the tilting pressure F can be decomposed into three components in three directions perpendicular to each other (i.e., F 轴向 、F 径向 and F 切向 ), F 轴向 、F 径向 and F 切向The pin sleeve 20 may be parallel to the axial direction, radial direction and tangential direction (ie, Fig.12 The X, Y and Z directions in the figure).

[0101] F 切向 It can be the driving force that causes the pin sleeve 20 to rotate. 轴向 and F 径向 The compressive forces applied to the pin bushing 20 may be axial and radial.

[0102] In addition, in order to prevent the extrusion force F applied to the pin sleeve 20 轴向 and F 径向 To solve the problems of increased rotational friction or even jamming, a pin sleeve support portion (such as a bearing assembly, a ball or a self-lubricating coating) can be provided on the outer side of the pin sleeve 20 to support the pin sleeve 20 to rotate around its central axis.

[0103] For example, the pin sleeve support portion may be disposed between the radial periphery of the pin sleeve 20 and the locking portion 10, i.e., the axial inner side of the pin sleeve, and / or a pin sleeve support portion may also be disposed on the axial outer side of the pin sleeve 20 to facilitate the rotation of the pin sleeve 20 around its central axis.

[0104] although Fig.12 Only an example is shown in which the pin bushing 20 is rotated due to the tilting pressure, but the embodiment is not limited thereto.

[0105] As another example, the pin sleeve 20 can also be rotated by the inclined friction force. For example, the direction of the friction force can be inclined, and similar to the above analysis of the inclined pressure F, the inclined friction force can be decomposed into a tangential component (the axial direction and diameter perpendicular to the central axis of the pin sleeve 20), thereby providing a rotational torque (the tangential component of the friction force×the vertical distance from the force point to the central axis of the pin sleeve), so that the pin sleeve 20 can rotate.

[0106] Despite Fig.12 FIG. 2 shows a case where the radial outer surface of the insertion end 31 of the locking pin 30 includes an inclined portion, but the embodiment is not limited thereto. The radial outer surface of the insertion end 31 of the locking pin 30 may also be parallel to the axial direction of the locking pin 30. Even when the radial outer surface of the insertion end 31 of the locking pin 30 is parallel to the axial direction, as long as the inner side surface of the pin sleeve 20 includes an inclined portion, a driving force (F) sufficient to rotate the pin sleeve 20 can still be generated. 切向 ).

[0107] According to the above reference Fig.11 and Fig.12As can be seen from the description, according to the locking device 3 of the embodiment of the present invention, even when the insertion end 31 of the locking pin 30 is tilted or misaligned, the angle of the pin sleeve can be adaptively adjusted by rotating the pin sleeve 20 when inserting the insertion end 31 of the locking pin 30, so that the insertion end 31 of the locking pin 30 can be easily inserted into the locking hole 21 of the pin sleeve 20.

[0108] In order to make the pin sleeve 20 rotate easily and avoid problems such as rotation wear, noise or jamming, a pin sleeve support portion 40 may be provided in the mounting portion of the pin sleeve 20 .

[0109] The installation structure of the pin sleeve 20 and its matching structure with the locking pin 30 and the pin sleeve supporting portion 40 will be described in detail below with reference to the accompanying drawings.

[0110] like Figures 3 to 5 As shown, the pin sleeve 20 according to the embodiment of the present invention can be embedded in the locking portion 10. The locking portion 10 can have a pin sleeve mounting portion 11 for accommodating the pin sleeve 20 and supporting the pin sleeve 20 at least in the radial direction.

[0111] like Figure 3 and Figure 5 As shown, the pin sleeve mounting portion 11 may be located on the axial first side (left side in the figure) of the locking portion 10, and the pin sleeve mounting portion 11 may be formed in a hole shape with an opening toward the locking pin 30. In other words, the pin sleeve mounting portion 11 may be formed in a hole shape and have an opening located on the axial first side of the locking portion 10, and the axial first side may be close to the locking pin 30.

[0112] As an example, the pin sleeve mounting portion 11 may be configured as a groove opening toward the axial first side, the groove may have a substantially cylindrical shape, and may include an axial bottom surface and a cylindrical side surface. Therefore, the pin sleeve mounting portion 11 may support the radial outer side and the axial inner side (axial second side) of the pin sleeve 20. As an example, the pin sleeve mounting portion 11 may form a gap with the support pin sleeve 20, and be supported by the pin sleeve support portion 40 (e.g., bearing assemblies 41 and 42, which will be described later) interposed therebetween.

[0113] Although in the locking portion 10 of the accompanying drawings, the pin sleeve mounting portion 11 is configured to be open toward one side, the embodiment is not limited thereto, and the pin sleeve mounting portion 11 may also be configured to be open toward both axial sides, such as a through hole.

[0114] In this case, the first opening of the axial first side of the pin sleeve mounting portion 11 may face the locking pin 30 and may be used for inserting the locking pin 30. The second opening of the axial second side of the pin sleeve mounting portion 11 may correspond to the first opening and have a size smaller than the first opening, so that the pin sleeve mounting portion 11 may still include an axial bottom surface and a cylindrical side surface, so that the locking portion 10 can simultaneously support the radial outer side and the axial inner side of the pin sleeve 20.

[0115] However, the embodiment is not limited thereto, and fixing plates may be further provided on both sides of the locking portion 10 to assist in supporting the inner side of the pin sleeve 20 in the axial direction. The fixing plates may be used to limit the pin sleeve 20 in the pin sleeve installation portion 11.

[0116] In addition, the fixing plate can also be used to limit the position of the pin sleeve supporting portion 40 , so as to limit the pin sleeve supporting portion 40 in the pin sleeve mounting portion 11 .

[0117] The arrangement and construction of the pin sleeve supporting portion 40 will be described in detail below.

[0118] As an example, the pin sleeve supporting portion 40 may include a first bearing assembly 41. The first bearing assembly 41 may be disposed between a radially outer portion of the pin sleeve 20 and the locking portion 10 to support the pin sleeve 20 to rotate in the pin sleeve mounting portion 11.

[0119] In this case, even if friction, tilting or misalignment occurs during the insertion and locking operation, causing the locking pin 30 to apply a tilting pressure F to the pin sleeve 20, because the first bearing assembly 41 is provided on the radial outer side of the pin sleeve 20, the pin sleeve 20 will not be compressed and stuck due to the tilting pressure F, and can easily rotate when subjected to the tilting pressure F, thereby appropriately releasing the pressure and adaptively adjusting the relative angle or position between the pin sleeve 20 and the locking pin 30, which is facilitating the insertion and locking operation.

[0120] As an example, the first bearing assembly 41 may include a radial bearing to mainly bear a radial load so that the pin sleeve 20 can be easily rotated even when it is subjected to the tilting pressure F. However, the embodiment is not limited thereto.

[0121] As a more preferred example, the first bearing assembly 41 may also include a tapered roller bearing, a deep groove ball bearing or an angular contact ball bearing, etc., to simultaneously bear radial loads and axial loads, thereby achieving a higher load capacity with fewer component arrangements.

[0122] like Figure 4 As shown, a step structure may be provided on the inner surface of the pin sleeve mounting portion 11 of the locking portion 10 for positioning the radial outer ring of the first bearing assembly 41, and / or a step structure may be provided on the radial outer surface of the pin sleeve 20 for positioning the radial inner ring of the first bearing assembly 41.

[0123] In this case, the axial inner side (axial first side) of the first bearing assembly 41 can be positioned by the step structure of the pin sleeve mounting portion 11 and the pin sleeve 20, while the axial outer side (axial second side) of the first bearing assembly 41 can be fixed by a separately arranged bearing limit plate.

[0124] As an example, the locking device according to an embodiment of the present invention may also include a first fixing plate 51 (also referred to as a pin sleeve fixing plate), which is fixedly attached to the axial first side of the locking part 10 and limits the pin sleeve 20 and the first bearing assembly 41 in the pin sleeve mounting part 11, wherein the pin sleeve mounting part 11 is formed in a hole shape and has an opening located on the axial first side of the locking part 10.

[0125] In other words, the first fixing plate 51 can have multiple fixing functions. On the one hand, the first fixing plate 51 can be used to axially limit the pin sleeve 20, and limit the pin sleeve 20 in the pin sleeve mounting portion 11. On the other hand, the first fixing plate 51 can be used to axially limit the first bearing assembly 41, and limit the first bearing assembly 41 in the pin sleeve mounting portion 11.

[0126] The first bearing assembly 41 may include an inner ring, an outer ring, and rollers disposed between the inner ring and the outer ring.

[0127] The inner ring of the first bearing assembly 41 may be sleeved on the radial outer side of the pin sleeve 20 , and the outer ring of the first bearing assembly 41 may be installed to the radial inner side of the pin sleeve installation portion 11 of the locking portion 10 .

[0128] As an example, the first fixing plate 51 can directly or indirectly press the axial outer side (first side) of the first bearing assembly 41, thereby positioning the first bearing assembly 41 at a predetermined position to avoid axial movement. At the same time, the first fixing plate 51 can directly or indirectly press the axial outer side (axial first side) of the pin sleeve 20, thereby positioning the pin sleeve 20 at a predetermined position to avoid axial movement.

[0129] For example, the side of the first fixing plate 51 facing the locking portion 10 can directly abut against the axial outer side (first side) of the outer ring of the first bearing assembly 41, and can also directly abut against the axial outer side (first side) of the pin sleeve 20 at the same time, so as to simplify the installation process of the bearing assembly. In addition, the axial outer side (first side) of the inner ring of the first bearing assembly 41 can abut against a step portion provided on the outer peripheral surface of the pin sleeve 20, or can abut against an additional step portion provided on the outer peripheral surface of the pin sleeve 20, so as to prevent axial movement or displacement.

[0130] In this case, one end of the first fixing plate 51 may be provided with a mounting hole for being mounted and fixed to the locking portion 10 .

[0131] Specifically, the locking device 3 may further include a first bolt 61. The first fixing plate 51 may be fixed to the locking portion 10 by the first bolt 61 passing through the mounting hole of the first fixing plate 51. The end of the first bolt 61 passing through the first fixing plate 51 may be coupled to a corresponding threaded hole of the locking portion 10.

[0132] Therefore, due to the axial limiting effect of the first fixing plate 51 on the pin sleeve 20 , the pin sleeve 20 can rotate relative to the locking portion 10 without falling off from the pin sleeve mounting portion 11 of the locking portion 10 .

[0133] Although the above describes an example in which the first fixing plate 51 directly contacts and limits the first bearing assembly 41 and / or the pin sleeve, the embodiment is not limited thereto.

[0134] As another example, the first bearing assembly 41 and / or the pin sleeve 20 may also be compressed by an intermediate pressure plate (eg, a second fixing plate 52 and a third fixing plate 53 , which will be described in detail later).

[0135] In this case, the first bearing assembly 41 and / or the pin sleeve 20 may directly contact another intermediate pressure plate and be fixed and limited by the intermediate pressure plate or a combination of the intermediate pressure plate and the first fixing plate 51 .

[0136] According to the embodiment of the present invention, by providing a plurality of fixing plates such as a first fixing plate, a second fixing plate and a third fixing plate, the manufacturing difficulty can be reduced, thereby reducing the manufacturing cost. In addition, according to the different number and positions of the bearing assembly, the assembly process can also be simplified.

[0137] As an example, the locking device 3 according to an embodiment of the present invention may also include a second fixing plate 52 and a third fixing plate 53, wherein the second fixing plate 52 is fixedly attached to the axial first side of the locking portion 10 and abuts against the outer ring of the first bearing assembly 41, and the third fixing plate 53 is fixedly attached to the axial first side of the pin sleeve 20 and abuts against the inner ring of the first bearing assembly 41.

[0138] Preferably, the axial first side and the axial second side of the outer ring of the first bearing assembly 41 can be respectively limited by the second fixing plate 52 and the locking portion 10, and the locking portion 10 includes a first step portion 15 (see Figure 4 ), the first step portion 15 abuts against the axial second side of the outer ring of the first bearing assembly 41, the axial first side and the axial second side of the inner ring of the first bearing assembly 41 can be limited by the third fixing plate 53 and the pin sleeve 20 respectively, and the pin sleeve 20 includes a second step portion 23 (see Figure 4 ), the second step portion 23 abuts against the axial second side of the inner ring of the first bearing assembly 41.

[0139] However, the embodiment is not limited thereto, and the locking device 3 according to the embodiment of the present invention may also include only one of the second fixing plate 52 and the third fixing plate 53, or may include more fixing plates to reduce the difficulty of processing and simplify assembly.

[0140] As an example, the locking device 3 according to an embodiment of the present invention may include a first fixing plate 51 and a second fixing plate 52, and the first fixing plate 51 and the second fixing plate 52 may respectively abut the inner ring and outer ring of the first bearing assembly 41 for fixing and limiting the first bearing assembly 41.

[0141] Similar to the above example, the first fixing plate 51 can be fixed to the locking portion 10 by the first bolt 61, and is used to limit the axial position of the pin sleeve 20. As an example, the first fixing plate 51 can have a T-shaped cross section.

[0142] In addition, the second fixing plate 52 may have an L-shaped cross section, and may include a connecting portion having a mounting hole (for fixed mounting to the locking portion 10 ) and a stopper abutting against the outer ring of the first bearing assembly 41 .

[0143] The limiting portion of the second fixing plate 52 may extend from the connecting portion along the axial direction toward the first bearing assembly 41 .

[0144] The second fixing plate 52 may be fixed to the locking portion 10 by means of second bolts 62 penetrating through the mounting holes thereof.

[0145] In this case, the first axial side (left side in the figure) of the locking portion 10 may be formed with a step structure for installation and fixation of the first fixing plate 51 and the second fixing plate 52. Specifically, the first fixing plate 51 may be located on the first axial side (left side in the figure) of the second fixing plate 52, the first fixing plate 51 may be installed to the outermost surface of the first axial side of the locking portion 10, and the second fixing plate 52 may be installed to the third step portion 16 of the locking portion 10.

[0146] As an example, the first fixing plate 51 and the second fixing plate 52 may be fixedly installed by the first bolt 61 and the second bolt 62, respectively, and spaced apart from each other by a predetermined distance. However, the embodiment is not limited thereto, and as an example, the first fixing plate 51 and the second fixing plate 52 may have overlapping portions overlapping each other, in which case the first fixing plate 51 and the second fixing plate 52 may be fixed to the locking portion 10 at the same time by the same fixing bolt (e.g., the first bolt 61).

[0147] The above description is based on an example with a first bearing assembly 41, but the locking device according to an exemplary embodiment of the present invention may also include more bearing assemblies to improve the reliability and stability of the rotational support of the pin sleeve 20, avoid rotation restriction of the pin sleeve 20 as much as possible, and prevent noise friction, noise, and jamming.

[0148] As a preferred example, the sleeve support portion 40 of the locking device 3 according to the embodiment of the present invention may further include a second bearing assembly 42. The second bearing assembly 42 may be disposed between the axial second side of the sleeve 20 and the locking portion 10, and the axial second side may be away from the locking pin 30.

[0149] In this case, even if friction, tilt or misalignment occurs during the insertion and locking operation, causing the locking pin 30 to apply a tilting pressure F to the pin sleeve 20, the pin sleeve 20 will not be pressed and stuck due to the tilting pressure F, because the bearing assembly is provided on the axial second side (inner side) of the pin sleeve 20. 切向 The pin sleeve 20 can be easily rotated, thereby appropriately releasing the pressure on the pin sleeve 20 and adaptively adjusting the relative angle or position between the pin sleeve 20 and the locking pin 30, which is beneficial to the insertion and locking operation.

[0150] As an example, the second bearing assembly 42 may include a thrust bearing to mainly bear the axial load, so that even when the pin sleeve 20 is subjected to the tilting pressure F, it will not be compressed, rubbed or even stuck, and can be easily rotated.

[0151] As for the installation of the second bearing assembly 42, the axial first side of the second bearing assembly 42 can be embedded in the axial second side of the pin sleeve 20, and the axial second side of the second bearing assembly 42 can be embedded in the axial inner surface of the pin sleeve mounting portion 11 of the locking portion 10.

[0152] Specifically, a first mounting groove and a second mounting groove may be formed in the axial second side (inner side) of the pin sleeve 20 and the pin sleeve mounting portion 11 of the locking portion 10, respectively, for fixing and limiting two bearing rings opposite to each other in the axial direction of the second bearing assembly 42. For example, the axial inner ring (seat ring) of the second bearing assembly 42 may be disposed in the first mounting groove, and the axial outer ring (shaft ring) of the second bearing assembly 42 may be disposed in the second mounting groove.

[0153] As a more preferred example, the pin sleeve support portion 40 of the locking device 3 according to the embodiment of the present invention may further include a third bearing assembly 43. The third bearing assembly 43 may be disposed between the axial first side (outer side) of the pin sleeve 20 and the first fixing plate 51 (pin sleeve fixing plate), and the axial first side of the pin sleeve 20 may face the locking pin 30.

[0154] In this case, the pin sleeve 20 can be easily rotated to avoid the first side of the pin sleeve 20 being restricted in rotation due to friction or jamming of the surface. As described above, by rotating the pin sleeve 20, the pressure on the pin sleeve 20 can be appropriately released, and the relative angle or position between the pin sleeve 20 and the locking pin 30 can be adaptively adjusted, which is conducive to the insertion and locking operation.

[0155] As an example, the third bearing assembly 43 may include a thrust bearing to mainly bear the axial load so that the pin bushing 20 can easily rotate.

[0156] Regarding the installation of the third bearing assembly 43 , the third bearing assembly 43 may be directly disposed on the axial first side (outer side) of the pin bushing 20 .

[0157] In this case, a third mounting groove may be formed on the axial first side (outer side) of the pin sleeve 20, and a fourth mounting groove may be provided on the side of the first fixing plate 51 facing the locking portion 10, and the third mounting groove and the fourth mounting groove may be respectively used for the installation and positioning of two bearing rings in the axial direction of the third bearing assembly 43. For example, the axial inner ring (seat ring) of the third bearing assembly 43 may be provided in the third mounting groove, and the axial outer ring (shaft ring) of the third bearing assembly 43 may be provided in the fourth mounting groove.

[0158] However, the embodiment is not limited thereto, and the third bearing assembly 43 may also be indirectly connected to the axial first side (outer side) of the pin bushing 20 .

[0159] In this case, the locking device according to the embodiment of the present invention may further include a third fixing plate 53. That is, the third bearing assembly 43 may be spaced apart from the pin sleeve 20 by the third fixing plate 53.

[0160] For example, the third bearing assembly 43 may be disposed between the first fixing plate 51 and the third fixing plate 53 , and thus, a third mounting groove and a fourth mounting groove for fixing the third bearing assembly 43 may be formed on surfaces of the first fixing plate 51 and the third fixing plate 53 that are opposite to each other, respectively.

[0161] As an example, the third fixing plate 53 may have a substantially L-shaped cross section, and may include a connection portion having a mounting hole (for connection and fixing to the pin sleeve 20 or the locking portion 10) and a stopper portion abutting against the inner ring of the first bearing assembly 41. The stopper portion of the third fixing plate 53 may extend from the connection portion toward the first bearing assembly 41 in the axial direction. The third fixing plate 53 may be fixed to the axial first side (outer side, left side in the figure) of the pin sleeve 20 by a third bolt 63 penetrating the mounting hole thereof.

[0162] According to an embodiment of the present invention, by setting up multiple fixing plates, the manufacturing process of the fixing plates can be simplified and the manufacturing cost can be reduced. At the same time, since the structure of each fixing plate is simplified, the possibility of failure is reduced. Moreover, in later operation and maintenance, even if a failure occurs, each fixing plate can be replaced individually, thereby reducing operation and maintenance costs.

[0163] In addition, according to the embodiment of the present invention, the above-mentioned fixing plate can be in the shape of a ring so as to be used in conjunction with the pin sleeve and bearing assembly having an annular shape. This can not only realize the fixation of the pin sleeve and the bearing assembly, but also enable the axial second side (outer side) and inner side surface (side surface of the locking hole) of the pin sleeve to be fully exposed for the insertion of the locking pin.

[0164] Figures 7 to 10 The structure of the pin sleeve 20 according to the preferred embodiment of the present invention is shown. The pin sleeve 20 can be applied to the installation mode of multiple bearing assemblies to provide rotation support forces from different directions. The structure of the pin sleeve 20 will be described in detail with reference to the accompanying drawings.

[0165] The pin sleeve 20 may be in the shape of an annular cylinder. The pin sleeve 20 according to the embodiment of the present invention may include a main body 22 and various mounting holes (eg, mounting holes for mounting the third fixing plate 53) located on the main body 22.

[0166] For example, the pin sleeve 20 may include a locking hole 21 located at the center thereof for inserting the insertion end 31 of the locking pin 30. Figure 6 and Figure 7 As an example, the insertion end 31 of the locking pin 30 and the locking hole 21 of the pin sleeve 20 may both have a rectangular cross-section (in a cross-section perpendicular to the axial direction).

[0167] In addition, the insertion end 31 of the locking pin 30 and the locking hole 21 of the pin sleeve 20 may both be in a pyramid shape, but the embodiment is not limited thereto, and may also be formed in a conical shape or a combination of various conical shapes.

[0168] For example, the insertion end 31 of the locking pin 30 may include one or more inclined portions (see Figure 6 ), and / or the locking hole 21 of the pin sleeve 20 may include one or more inclined portions (refer to Figure 7 ), here, the inclined portion may refer to the inclination relative to the central axis of the locking pin 30 or the pin sleeve 20 (i.e., the central axis of the locking hole 21). The inclined portion may be realized by processing and manufacturing, or may be an inclined state formed by component inclination, component friction or other external forces during the operation and locking process of the rotating system.

[0169] exist Figure 7 and Figure 8 In the embodiment of the present invention, the locking hole 21 of the pin sleeve 20 may be rectangular and include inclined surfaces opposite to each other. However, the embodiment is not limited thereto. As another example, the locking hole 21 may also be cylindrical or conical. Preferably, the locking hole 21 may have a conical shape to facilitate the insertion of the locking pin 30.

[0170] Even if the shape of the locking hole 21 changes in any way, as long as the locking pin 30 is inserted obliquely to apply a rotational torque to the pin sleeve 20 , the pin sleeve 20 can be rotated to achieve adaptive adjustment of the pin sleeve.

[0171] In addition, the locking device 3 according to the embodiment of the present invention may further include a rotation limiting member 65 (see Figure 5 ) is used to limit the rotation angle of the pin sleeve 20.

[0172] In this case, the second axial side of the pin sleeve 20 may be formed with a limiting groove 25 (see Figure 7 and Fig. 9 ), the limiting groove 25 may have an arc track.

[0173] The rotation limiter 65 is in the shape of a rod, one end of which is inserted into the limiter groove 25, and the other end is connected to the locking part 10. As an example, the rotation limiter 65 can be a pin rod or a screw rod. Specifically, a limiter mounting hole extending in the axial direction can be formed in the locking part 10, and the other end of the rotation limiter 65 can be inserted into the limiter mounting hole of the locking part 10 and fixed to the locking part 10 by threaded connection to prevent the limiter 65 from moving in the axial direction and slipping out of the limiter groove 25.

[0174] The limiting groove 25 may be formed to be recessed to a predetermined depth toward the inside of the body 22 in the axial direction (X direction) to accommodate one end in the length direction of the rotation limiting member 65. Moreover, the limiting groove 25 may be formed to have an arc shape to serve as a moving track of the rotation limiting member 65. The central axis of the arc shape of the limiting groove 25 may be coaxial with the central axis of the locking hole 21 of the pin sleeve 20.

[0175] In addition, a first installation groove 26 may be provided in the axial second side of the pin sleeve 20 for installation and positioning of the second bearing assembly 42. The first installation groove 26 may be recessed to a predetermined depth in the axial direction toward the inside of the body 22 and may have a circular ring shape.

[0176] Accordingly, other mounting grooves for mounting a bearing assembly according to an embodiment of the present invention may also have a shape similar to that of the first mounting groove 26 .

[0177] Optionally, a bolt hole 24 for mounting the third fixing plate 53 may be provided in the axial first side (opposite to the second side) of the pin sleeve 20. However, the embodiment is not limited thereto, and if the third fixing plate 53 is omitted, the bolt hole 24 may be omitted accordingly.

[0178] For example, despite Figure 4The example shows a structure in which the axial first side (opposite to the second side) of the pin sleeve 20 is separated from the third bearing assembly 43 by a third fixing plate 53, but the embodiment is not limited to this, and the third fixing plate 53 can be omitted, and the bolt hole 24 can be omitted accordingly.

[0179] When the third fixing plate 53 is omitted, the third bearing assembly 43 can be directly set on the axial first side of the pin sleeve 20. Accordingly, a third mounting groove (not shown) for mounting the third bearing assembly 43 can be formed in the axial first side of the pin sleeve 20.

[0180] In addition, refer to Figures 7 to 10 A protruding bearing limiter, namely a second step portion 23, may be formed on the radial outer side of the pin sleeve 20. The second step portion 23 may protrude outward by a predetermined distance in the radial direction relative to the main body 22 of the pin sleeve 20 to limit and fix the first bearing assembly 41 in the axial direction.

[0181] Although the figure shows an example in which the second step portion 23 is located on the second axial side of the pin sleeve 20, the embodiment is not limited thereto, and the position of the second step portion 23 can be adaptively adjusted according to the setting position of the bearing assembly.

[0182] Although the drawings illustrate an example in which the second step portion 23 is formed in an annular shape around the entire outer shaft surface of the pin bushing 20 , the embodiment is not limited thereto.

[0183] Although examples of the arrangement of the bearing assembly and the fixing plate are described above, the embodiments of the present invention are not limited thereto, and more or fewer bearing assemblies may be provided, and the fixing plate may be decomposed or combined accordingly.

[0184] Although it is described above that the friction, noise or jamming problem is prevented by providing a bearing assembly, the embodiments of the present invention are not limited thereto, and the rotation of the pin sleeve may also be promoted by providing a coating.

[0185] As another example, the pin sleeve support portion 40 may include a self-lubricating coating. As an example, the self-lubricating coating may include a metal coating or a non-metal coating. The non-metal coating may include a carbon material coating (e.g., a graphite coating, a graphene coating, or a carbon fiber coating), a disulfide (e.g., MoS2, WS2, etc.), a ceramic material coating, or an organic material coating, etc.

[0186] According to the embodiment of the present invention, the pin sleeve 20 and the locking portion 10 may be clearance-fitted, and a self-lubricating coating may be provided on at least one of the surfaces of the pin sleeve 20 and the pin sleeve mounting portion 11 facing each other.

[0187] In addition, a self-lubricating coating may be provided on at least one of the surfaces of the pin bushing 20 and the fixing plate (eg, the first fixing plate 51 or the third fixing plate 43 ) that are opposite to each other and may contact each other.

[0188] According to an embodiment of the present invention, since the carbon material coating has excellent friction reducing self-lubricating properties and stable physical and chemical properties (such as resistance to cold and hot shock, thermal shock, etc.), the self-lubricating coating may preferably include a carbon material coating such as a graphite coating, a graphene coating or a carbon fiber coating.

[0189] As another example, the pin sleeve supporting portion 40 may include a ball. For example, the ball may be disposed between the pin sleeve 20 and the locking portion 10.

[0190] In this case, a rolling groove may be formed on at least one of the pin sleeve 20 and the locking portion 10 to accommodate a ball, and the pin sleeve 20 may be supported to rotate relative to the locking portion 10 by the ball.

[0191] As an example, a rolling groove for a ball may be formed in a manner similar to the first to fourth mounting grooves described above.

[0192] In addition, the pin sleeve 20 and the locking portion 10 may be clearance-fitted, and rolling grooves for balls may also be provided on the radial outer surface of the pin sleeve 20 and the radial inner surface of the locking portion 10 .

[0193] The rolling groove may be formed in an annular form so that the balls may be disposed on the entire outer circumference of the radial outer surface of the pin bushing 20 and in the entire annular groove portion on the axial outer surface of the pin bushing 20 .

[0194] As an example, the ball bearings may be spherical ball bearings or cylindrical ball bearings, but the embodiment is not limited thereto, as long as the rotation of the pin sleeve 20 can be supported in a rotational manner.

[0195] The locking device and the wind turbine generator set according to the present invention have a pin sleeve adaptive adjustment structure to achieve adaptive adjustment of the pin sleeve.

[0196] According to the locking device and wind turbine generator set of the present invention, the pin sleeve can be adaptively rotated according to the tilt angle or insertion angle during the locking and insertion operation, thereby realizing adaptive adjustment. In addition, even if an inclined portion is formed on the surface of the locking pin and / or the pin sleeve due to processing or operating friction, the pin sleeve can be adaptively rotated, thereby realizing adaptive adjustment.

[0197] According to the locking device and wind turbine generator set of the present invention, during the locking operation, even if the pin sleeve or the locking pin is tilted, the insertion and locking operation can be successfully completed, thereby reducing the difficulty of aligning and adjusting the locking device and improving the stability of the locking operation.

[0198] The locking device and the wind turbine generator set according to the present invention can reduce wear and noise during the locking operation, thereby increasing the service life.

[0199] The locking device and wind turbine generator set according to the present invention can prevent damage such as jamming or crushing during the locking process, thereby reducing operation and maintenance costs.

[0200] In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0201] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0202] The features, structures or characteristics described in the present invention may be combined in one or more embodiments in any suitable manner. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring various aspects of the present invention.

Claims

1. A locking device (3), characterized in that: The locking device (3) comprises: A locking portion (10), wherein the locking portion (10) comprises a pin sleeve mounting portion (11), A pin sleeve (20), wherein the pin sleeve (20) is arranged in the pin sleeve mounting portion (11) and has a locking hole (21), a locking pin (30), wherein the insertion end (31) of the locking pin (30) can be inserted into the locking hole (21) of the pin sleeve (20), so that the locking pin (30) is locked by the locking portion (10), A pin sleeve supporting portion (40) is arranged outside the pin sleeve (20) to support the pin sleeve (20) so as to be rotatable relative to the locking portion (10) around a central axis of the pin sleeve (20).

2. The locking device (3) according to claim 1, characterized in that: The pin sleeve supporting portion (40) comprises a first bearing assembly (41), which is arranged between the radial outer side of the pin sleeve (20) and the locking portion (10) to support the pin sleeve (20) to rotate in the pin sleeve mounting portion (11).

3. The locking device (3) according to claim 2, characterized in that: The locking device (3) also includes a first fixing plate (51), which is fixedly attached to the axial first side of the locking portion (10) and limits the pin sleeve (20) and the first bearing assembly (41) in the pin sleeve mounting portion (11), wherein the pin sleeve mounting portion (11) is formed in a hole shape and has an opening located on the axial first side of the locking portion (10), and the axial first side is close to the locking pin (30).

4. The locking device (3) according to claim 3, characterized in that: in, The inner ring of the first bearing assembly (41) is sleeved on the radial outer side of the pin sleeve (20), and the outer ring of the first bearing assembly (41) is mounted on the radial inner side of the pin sleeve mounting portion (11) of the locking portion (10); The locking device (3) further comprises a second fixing plate (52) and a third fixing plate (53), The second fixing plate (52) is fixedly attached to the first axial side of the locking portion (10) and abuts against the outer ring of the first bearing assembly (41). The third fixing plate (53) is fixedly attached to the first axial side of the pin sleeve (20) and abuts against the inner ring of the first bearing assembly (41).

5. The locking device (3) according to claim 4, characterized in that: The axial first side and the axial second side of the outer ring of the first bearing assembly (41) are respectively limited by the second fixing plate (52) and the locking portion (10), and the locking portion (10) comprises a first step portion (15), and the first step portion (15) abuts against the axial second side of the outer ring of the first bearing assembly (41). The axial first side and the axial second side of the inner ring of the first bearing assembly (41) are respectively limited by the third fixing plate (53) and the pin sleeve (20), and the pin sleeve (20) includes a second step portion (23), and the second step portion (23) abuts against the axial second side of the inner ring of the first bearing assembly (41).

6. The locking device (3) according to claim 3, characterized in that: The pin sleeve support portion (40) further comprises a third bearing assembly (43), wherein the third bearing assembly (43) is arranged between the first axial side of the pin sleeve (20) and the first fixing plate (51).

7. The locking device (3) according to claim 4, characterized in that The pin sleeve supporting portion (40) further comprises a third bearing assembly (43), wherein the third bearing assembly (43) is arranged between the first fixing plate (51) and the third fixing plate (53).

8. The locking device (3) according to claim 2, characterized in that: The first bearing assembly (41) comprises a tapered roller bearing, a deep groove ball bearing or an angular contact ball bearing.

9. The locking device (3) according to any one of claims 1 to 8, characterized in that: The pin sleeve supporting portion (40) further comprises a second bearing assembly (42), wherein the second bearing assembly (42) is arranged between the second axial side of the pin sleeve (20) and the locking portion (10).

10. The locking device (3) according to claim 9, characterized in that The axial first side of the second bearing assembly (42) is embedded in the axial second side of the pin sleeve (20), and the axial second side of the second bearing assembly (42) is embedded in the axial inner surface of the pin sleeve mounting portion (11) of the locking portion (10).

11. The locking device (3) according to claim 1, characterized in that The pin sleeve (20) and the pin sleeve mounting portion (11) are clearance-fitted. The pin sleeve supporting portion (40) includes a self-lubricating coating, and the self-lubricating coating is provided on at least one of the surfaces of the pin sleeve (20) and the pin sleeve mounting portion (11) that are in contact with each other.

12. The locking device (3) according to claim 1, characterized in that The pin sleeve supporting portion (40) comprises a ball, and the ball is arranged between the pin sleeve (20) and the locking portion (10). A rolling groove is formed on at least one of the pin sleeve (20) and the locking portion (10) to accommodate the ball bearings, and the pin sleeve (20) is supported by the ball bearings to rotate relative to the locking portion (10).

13. The locking device (3) according to any one of claims 1 to 8, characterized in that: The locking device (3) further comprises a rotation limiting member (65) for limiting the rotation of the pin sleeve (20). A limiting groove (25) is formed on the second axial side of the pin sleeve (20), and the limiting groove (25) has an arc-shaped track. The rotation limiting member (65) is in the shape of a rod, one end of which is inserted into the limiting groove (25) and the other end of which is connected to the locking portion (10).

14. The locking device (3) according to any one of claims 1 to 8, characterized in that: The pin sleeve (20) is in the shape of an annular cylinder, the radial outer side wall of the annular cylinder has a cylindrical shape, the inner hollow space of the annular cylinder is a locking hole (21), has a conical shape, and the side with a larger opening faces the locking pin (30). The insertion end (31) of the locking pin (30) has a corresponding tapered shape.

15. The locking device (3) according to any one of claims 1 to 8, characterized in that: The corner portion where the radial inner surface of the locking hole (21) of the pin sleeve (20) connects with the end surface of the first axial side of the pin sleeve (20) has a rounded shape, A corner portion where the radial outer peripheral surface of the insertion end (31) connects to the axial end surface of the insertion end (31) has a rounded shape.

16. A wind turbine generator set, characterized in that: The wind turbine generator set comprises a locking device (3) according to any one of claims 1 to 15, the locking portion (10) being arranged on one of the fixed axis and the moving axis of the wind turbine generator set, and the locking pin (30) being arranged on the other of the fixed axis and the moving axis of the wind turbine generator set.

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