CN115076051A

CN115076051A - Barring gear and wind generating set

Info

Publication number: CN115076051A
Application number: CN202210772417.4A
Authority: CN
Inventors: 鹿良杰; 闫孟; 郝晓磊; 韩小岗
Original assignee: Shanghai Electric Wind Power Group Co Ltd
Current assignee: Shanghai Electric Wind Power Group Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-20

Abstract

The invention discloses a barring device and a wind generating set, wherein the barring device comprises a barring body, a switching disc and a torsion arm, one end of the switching disc is connected to a first output shaft of the barring body, and the other end of the switching disc is used for being connected with a high-speed end rotor of a driving chain of the wind generating set, so that the barring body is fixedly arranged on the high-speed end rotor of the driving chain of the wind generating set through the switching disc; the middle part of the torque arm is connected with the barring body, and two ends of the torque arm are respectively used for being movably connected with a stator of the wind generating set within a preset range. The turning gear is composed of a turning gear body, a switching disc and a torsion arm, wherein the turning gear body is fixedly arranged on a driving chain high-speed end rotor of a wind generating set through the switching disc, the switching disc transmits the driving force of the turning gear body to the driving chain high-speed end rotor and also plays a role in supporting and fixing the turning gear body, the torsion arm does not need to support the weight of the turning gear body, only one large torsion is provided, and the structure setting is simplified.

Description

Barring gear and wind generating set

Technical Field

The invention relates to a barring gear and a wind generating set.

Background

The single-blade installation of a large-scale wind driven generator is an important link of the wind driven generator installation, and the single-blade installation has the problems of large blade weight, high hoisting height, more hoisting equipment for use, high coordination difficulty and the like. In the installation process of a single blade, in order to conveniently install the blade, the generator needs to be rotated, and a common method is to additionally arrange an additional barring gear or a hydraulic driving device on the generator, wherein the barring gear is arranged according to the weight of the blade, and the larger the blade is, the larger the barring gear is.

In addition, when the wind generating set is overhauled and the blades are maintained, the blades are required to be rotated to a specified position through the barring gear in a fan stop state. The diameter of a wind wheel of an existing large-scale wind generating set exceeds 100 meters, the weight of the wind wheel can reach 100-200 tons, the sum of the weight of a rotating shaft and the weight of a bearing also reaches 20-40 tons, a barring gear for driving a hub needs to bear inertial load caused by the wind wheel, a rotating shaft of an engine room and the bearing and pneumatic load caused by external wind power, and the barring gear also needs to have high strength and driving force to drive the wind wheel to rotate.

In the existing driving system, a push-pull hydraulic oil cylinder is arranged at the low-speed end of a driving chain, so that the linear reciprocating motion of the hydraulic oil cylinder is converted into the circular motion of a wind wheel, the requirement of large torque under the working condition of single-blade hoisting is met, and the wind wheel is rotated to a specified position and locked at a proper position. The existing driving system II is additionally provided with a barring gear in a combined structure form of a speed reducer and a hydraulic motor through the high-speed end of a driving chain, the torque of the hydraulic motor is reduced and increased through a reduction gear box, the high-speed end of the driving chain is directly driven to rotate, and further the reverse reduction and increase of the torque through a unit gear box are realized to realize the single-blade hoisting working condition so as to rotate a wind wheel to a specified position and lock the wind wheel at the required position. However, these two types of drive systems capable of outputting a large torque have complicated equipment, require many pieces of equipment, and are high in economic cost.

Disclosure of Invention

The invention aims to overcome the defect that a barring gear which outputs large torque in the prior art is high in economic cost, and provides a barring gear and a wind generating set.

The invention solves the technical problems through the following technical scheme:

a barring gear for a wind generating set, comprising:

turning a gear body;

one end of the adapter disc is connected to the first output shaft of the barring body, and the other end of the adapter disc is used for being connected with a driving chain high-speed end rotor of the wind generating set, so that the barring body is fixedly installed on the driving chain high-speed end rotor of the wind generating set through the adapter disc;

the middle part of the torsion arm is connected to the barring body, and two ends of the torsion arm are respectively used for being movably connected to the stator of the wind generating set within a preset range, wherein the preset range is a range in which the connecting part of the torsion arm can slide relative to the stator in the radial direction and the circumferential direction.

In the scheme, the barring device consists of a barring body, a switching disc and a torsion arm, wherein the barring body is fixedly arranged on a driving chain high-speed end rotor of the wind generating set through the switching disc, the switching disc not only transmits the driving force of the barring body to the driving chain high-speed end rotor, but also plays a role in supporting and fixing the barring body, the structural arrangement of the barring device is simplified, wherein the torsion arm does not need to support the weight of the barring body, the torsion arm only provides a larger torsion force, when the torsion arm is under a large torsion working condition, the torsion arm can rotate within a preset range (or the torsion arm has small-amplitude rigid deformation), and at the moment, two ends of the passing torsion arm are movably connected, so that the torsion arm slides within the preset range in the radial direction and the circumferential direction, the torsion arm is prevented from being damaged due to rigid connection between the torsion arm and the stator, and the reliability of the turning gear is improved. The connecting portion is a connecting position between the torsion arm and the stator, and is slidable in the radial direction and the circumferential direction with respect to the stator.

In other alternative schemes, two ends of the torsion arm can be connected to the box body of the wind generating set.

Preferably, the torsion arm comprises an arm body and a connecting unit, the middle part of the arm body is connected to the barring body, and two ends of the arm body are respectively connected to the stator of the wind generating set through the connecting unit;

the connecting unit comprises a connecting piece and a pin shaft assembly, the connecting piece is connected to the rear end cover of the stator of the wind generating set, an adjusting hole is formed in the connecting piece, a connecting hole is formed in the end portion of the arm body, the pin shaft assembly is used for penetrating through the connecting hole and the adjusting hole, and the pin shaft assembly can be arranged in the adjusting hole or the connecting hole and can slide along the radial direction of the pin shaft assembly within a preset range.

In this scheme, the both ends of arm body are connected in wind generating set's stator through the linkage unit respectively, need not additionally to set up unnecessary part and structure on the stator, are convenient for be connected between arm body and the stator. Furthermore, the pin shaft assembly penetrates through the connecting hole and the adjusting hole, so that the arm body is connected with the stator, and the torsion arm can provide torsion; when the pin shaft assembly is pulled out from the connecting hole and the adjusting hole, the arm body is separated from the stator, the arm body is convenient to disassemble and assemble, and the assembling efficiency is improved. The pin shaft assembly and the hole are matched, so that the pin shaft assembly can slide in the radial direction and the circumferential direction conveniently, and the torsion arm is not easy to damage the structure when providing large torque. The inner diameter of the adjusting hole or the connecting hole is larger than the diameter of the pin shaft assembly, so that the pin shaft assembly can rotate in the adjusting hole or the connecting hole and slide along the radial direction of the pin shaft assembly within a preset range.

Preferably, the pin shaft assembly comprises a pin shaft and a sliding block, the sliding block is embedded in the adjusting hole and can slide in the preset range in the adjusting hole, and two ends of the pin shaft penetrate through the sliding block and the connecting hole respectively.

In this scheme, the round pin axle wear the hole on the slider and with the hole adaptation, the round pin axle of being convenient for can rotate for the slider, also increases the area of contact of round pin axle and slider simultaneously. The pin shaft is embedded in the adjusting hole through the sliding block, connection with the connecting piece is achieved, sliding and abrasion are achieved between the sliding block and the connecting piece, abrasion of the pin shaft is reduced, and the service life of the pin shaft is prolonged. The inner diameter of the adjusting hole is larger than the outer diameter of the sliding block, so that the sliding block can slide in the adjusting hole in the radial direction of the pin shaft within a preset range.

Preferably, the pin shaft assembly further comprises a buffer member, and the buffer member is arranged between the sliding block and the inner wall of the adjusting hole.

In this scheme, the bolster is used for reducing the impact between slider and the connecting piece to reduce the friction between the two, improve life. Typically the buffer is made of a flexible material, such as rubber or polyurethane.

Preferably, the sliding block is a rectangular block, the adjusting hole is a rectangular hole, and the inner diameter of the rectangular hole is larger than the outer diameter of the rectangular block.

In this scheme, the cooperation mode of rectangular block and rectangular hole for the rectangular block slides along the direction in rectangular hole, increases the lifting surface between slider and connecting piece, and even slider bears the load and reduces the slider and receives the bending stress concentration.

Preferably, the number of the buffer members is two, and the two buffer members are respectively fixed to two sides of the rectangular block in the circumferential direction.

In this scheme, when the torque arm is transmitting torsion, its main stress point is in torque arm circumference direction's both sides, sets up the bolster in the both sides of rectangle piece in circumference direction, and the volume that reducible bolster set up simplifies the structure setting.

Preferably, a blocking wall extending towards the inside is further arranged on the inner wall surface of the adjusting hole, and the blocking wall is arranged on one side close to the stator and used for limiting the sliding block to slide out from one side of the adjusting hole;

the pin shaft assembly further comprises a limiting part, and the limiting part is detachably connected to the connecting piece and used for limiting the sliding block to slide out from the other side of the adjusting hole.

In this scheme, adopt above-mentioned structure setting, be convenient for install the slider to the regulation hole in, locating part and stop wall resultant force limit the slider in the regulation hole simultaneously to avoid the slider to follow the near-end or the distal end roll-off of regulation hole.

Preferably, the two ends of the connecting piece in the circumferential direction are also provided with hanging rings.

In this scheme, rings mainly used hoists the connecting piece, the erection joint spare of being convenient for.

Preferably, the turning gear body includes a reduction gear box, the arm body includes a first member and a second member, the first member and the second member form a mounting hole, and the arm body is sleeved and mounted on a housing of the reduction gear box through the mounting hole.

In this scheme, adopt above-mentioned structure setting, be convenient for arm body cover establish and install to reduction gear's casing on. To increase the coupling strength, the first member and the second member are coupled to a housing of the reduction gear box.

Preferably, the first part and the second part are far away from one end of the mounting hole and are provided with lug seats, two of the pin shafts are provided with locking holes, and each pin shaft penetrates through the locking hole and the lug seat through a pin so as to lock one pin shaft in the first part and the other pin shaft in the second part.

In this scheme, adopt above-mentioned structure setting, prevent that the round pin axle from droing from the slider.

Preferably, the number of the locking holes is two, the two locking holes are arranged at intervals along the length direction of the pin shaft, one of the locking holes is arranged corresponding to the position of the pin shaft in the locking state, and the other locking hole is arranged corresponding to the position of the pin shaft in the unlocking state.

In this scheme, adopt above-mentioned structure setting, when round pin axle is in connected state or non-connected state with the slider, all can be through the pin quilt locking in the position of difference, improve and accomodate and fixed effect.

Preferably, the barring body comprises a driving motor and a reduction gear box, an output shaft of the driving motor is connected to an input end of the reduction gear box, the reduction gear box is provided with the first output shaft, one end of the adapter disc is connected to the first output shaft, and the other end of the adapter disc is used for being connected with a rotor at a high-speed end of a driving chain of the wind generating set.

In this scheme, provide drive power through driving motor, compare with hydraulic drive device, saved hydraulic cylinder and pipeline setting, reduced the cost of barring device. Reduction gear can reduce driving motor's rotational speed to provide great moment of torsion at the output, the demand of big torsion when satisfying the installation of single blade.

Preferably, the barring body further comprises a mechanical locking unit, one end of the mechanical locking unit is connected to the housing of the reduction gear box, and the other end of the mechanical locking unit is detachably connected to the second output shaft of the reduction gear box, so that the drive chain high-speed end rotor is locked or unlocked.

In the scheme, when the driving motor drives the high-speed end rotor, the mechanical locking unit is unlocked, and the driving motor drives the driving chain high-speed end rotor to rotate through the first output shaft. When the high-speed end rotor needs to be fixed at a certain position, the mechanical locking unit locks the second output shaft of the reduction gearbox, all the output shafts of the reduction gearbox are locked at the moment due to the meshing relation of the internal gears of the reduction gearbox, and the high-speed end rotor of the drive chain connected with the first output shaft is locked at the same time. The second output shaft may be provided at the high speed end of the gearbox, at the sub-high speed end or at any other rotational axis.

Preferably, the mechanical locking unit includes a supporting seat, a locking disk and a locking shaft, the supporting seat is connected to the casing of the reduction gear box, the locking disk is mounted on the second output shaft, a plurality of locking holes are formed in the locking disk at intervals along the circumferential direction, a fixing hole is formed in the supporting seat, and the locking shaft penetrates through the fixing hole and is inserted into any one of the locking holes to lock the locking disk.

In this scheme, adopt above-mentioned structure setting, simple structure, simple to operate.

In other alternative schemes, the first output shaft and the second output shaft can be the same shaft, and the adapter plate and the mechanical locking unit are respectively arranged at two ends of the same shaft.

A wind power generator set comprising a barring gear as described above.

In the scheme, the barring gear is mainly used for mounting a single blade of the wind driven generator and is used for rotating the hub to a required position so as to mount the blade; the barring gear is also used in the working condition of maintaining the wind generating set, such as replacing blades and the like.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows: the barring device consists of a barring body, a switching disc and a torsion arm, wherein the barring body is fixedly arranged on a driving chain high-speed end rotor of the wind generating set through the switching disc, the switching disc not only transmits the driving force of the barring body to the driving chain high-speed end rotor, but also plays a role in supporting and fixing the barring body, the structural arrangement of the barring device is simplified, wherein the torsion arm does not need to support the weight of the barring body, the torsion arm only provides a larger torsion force, when the torsion arm is under a large torsion working condition, the torsion arm can rotate within a preset range (or the torsion arm has small-amplitude rigid deformation), and at the moment, two ends of the passing torsion arm are movably connected, so that the torsion arm slides within the preset range in the radial direction and the circumferential direction, the torsion arm is prevented from being damaged due to rigid connection between the torsion arm and the stator, and the reliability of the turning gear is improved.

Drawings

Fig. 1 is a schematic structural diagram of a barring gear according to a preferred embodiment of the invention.

Fig. 2 is a schematic structural diagram of a torsion arm according to a preferred embodiment of the invention.

Fig. 3 is a schematic structural diagram of an arm body according to a preferred embodiment of the invention.

Fig. 4 is a schematic structural diagram of a connection unit according to a preferred embodiment of the invention.

Fig. 5 is a cross-sectional view of a connection unit according to a preferred embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a connecting member and a slider according to a preferred embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a slider according to a preferred embodiment of the present invention.

Fig. 8 is a schematic structural diagram of the mechanical locking unit after the shield is hidden according to the preferred embodiment of the invention.

Fig. 9 is a schematic structural diagram of a mechanical locking unit according to a preferred embodiment of the invention.

Description of reference numerals:

barring body 1

Drive motor 11

Reduction gear box 12

First output shaft 121

Second output shaft 122

Mechanical locking unit 13

Supporting seat 131

Locking disk 132

Lock shaft 133

Shield 134

Switching disk 2

Torsion arm 3

Arm body 31

First part 31a

Second member 31b

Connection hole 311

Ear mount 312

Connection unit 32

Connecting piece 321

Adjusting hole 3211

Blocking wall 3212

Pin shaft assembly 322

Pin 3221

Slider 3222

Buffer 3223

Locating part 3224

Locking hole 3225

Radial direction 100

Circumferential direction 200

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 to 9, the present embodiment discloses a barring apparatus for use in a single blade mount of a wind turbine generator set for driving a hub to rotate to a designated position. The barring gear comprises a barring body 1, an adapter disc 2 and a torsion arm 3. One end of the adapter disc 2 is connected to the first output shaft 121 of the barring body 1, and the other end of the adapter disc 2 is used for being connected with a driving chain high-speed end rotor of the wind generating set, so that the barring body 1 is fixedly mounted on the driving chain high-speed end rotor of the wind generating set through the adapter disc 2. The middle part of the torsion arm 3 is connected to the barring body 1, and two ends of the torsion arm 3 are respectively used for being movably connected to a stator of the wind generating set within a preset range. Wherein the preset range is a range in which the connecting portion of the torsion arm 3 is slidable in the radial direction 100 and the circumferential direction 200 with respect to the stator. The connecting portion of the torsion arm 3, that is, the connecting position between the torsion arm 3 and the stator, is slidable in the radial direction and the circumferential direction with respect to the stator.

In the embodiment, the barring device is composed of a barring body 1, an adapter disc 2 and a torsion arm 3, the barring body 1 is mounted and fixed on a driving chain high-speed end rotor of a wind generating set through the adapter disc 2, the adapter disc 2 not only transmits the driving force of the barring body 1 to the driving chain high-speed end rotor, but also the adapter disc 2 plays a role of supporting and fixing the barring body 1, the structural arrangement of the barring device is simplified, wherein the torsion arm 3 does not need to support the weight of the barring body 1, the torsion arm 3 only provides a large torsion force, when the torsion arm 3 is in a large torsion working condition, the torsion arm 3 can rotate within a preset range (or the torsion arm 3 has a small-amplitude rigid deformation), at the moment, two ends through which the torsion arm 3 passes are movably connected, so as to realize the sliding in a radial direction 100 and a circumferential direction 200 within the preset range, and avoid the rigid connection between the torsion arm 3 and a stator from being damaged, the reliability of the barring gear is improved.

In other alternative embodiments, the two ends of the torsion arm can be connected to the box body of the wind generating set.

As shown in fig. 1 and 2, the torsion arm 3 includes an arm body 31 and a connection unit 32, the arm body 31 is connected to the barring body 1 at a middle portion thereof, and both ends of the arm body 31 are connected to the stator of the wind turbine generator set through the connection unit 32, respectively. Two ends of the arm body 31 are respectively connected to the stator of the wind generating set through the connecting unit 32, and extra parts and structures do not need to be additionally arranged on the stator, so that the arm body 31 and the stator are conveniently connected.

As shown in fig. 4 to 6, the connection unit 32 includes a connection member 321 and a pin shaft assembly 322, the connection member 321 is connected to the rear end cover of the stator of the wind turbine generator system, an adjustment hole 3211 is formed in the connection member 321, a connection hole 311 is formed in an end portion of the arm body 31, the pin shaft assembly 322 is used for penetrating through the connection hole 311 and the adjustment hole 3211, and the pin shaft assembly 322 can slide in the adjustment hole 3211 along a radial direction of the pin shaft assembly 322 within a preset range. The pin shaft assembly 322 is inserted into the connecting hole 311 and the adjusting hole 3211, so that the arm body 31 is connected with the stator, and the torque arm 3 can provide torque. When the pin shaft assembly 322 is pulled out from the connecting hole 311 and the adjusting hole 3211, the arm body 31 is disconnected from the stator, so that the arm body 31 can be conveniently disassembled and assembled, and the assembly efficiency is improved. The inner diameter of the adjustment hole 3211 is larger than the diameter of the pin assembly 322, so that the pin assembly 322 can rotate in the adjustment hole 3211 and slide in the radial direction of the pin assembly 322 within a predetermined range. The pin assembly 322 is engaged with the hole in such a manner that the pin assembly 322 is easily slid in the radial direction 100 and the circumferential direction 200, and is not easily structurally damaged when the torsion arm 3 provides a large torque.

In other alternative embodiments, the inner diameter of the connecting hole may be larger than the diameter of the pin assembly, so that the pin assembly can rotate in the adjusting hole and slide in the radial direction of the pin assembly within a preset range.

As shown in fig. 4-7, the pin assembly 322 includes a pin 3221 and a slider 3222, the slider 3222 is embedded in the adjusting hole 3211 and can slide in a preset range in the adjusting hole 3211, and two ends of the pin 3221 respectively penetrate through the slider 3222 and the connecting hole 311. The pin 3221 penetrates through the hole in the slider 3222 and is adapted to the hole, so that the pin 3221 can rotate relative to the slider 3222, and the contact area between the pin 3221 and the slider 3222 is increased. The pin 3221 is embedded in the adjusting hole 3211 through the slider 3222, so that the connection with the connecting element 321 is realized, the sliding and the abrasion are both between the slider 3222 and the connecting element 321, the abrasion of the pin 3221 is reduced, and the service life of the pin 3221 is prolonged. The inner diameter of the adjusting hole 3211 is larger than the outer diameter of the slider 3222, so that the slider 3222 can slide within the adjusting hole 3211 within a preset range in the radial direction of the pin 3221.

In order to reduce the impact between the slider 3222 and the connecting member 321, the pin shaft assembly 322 further includes a buffer member 3223, and the buffer member 3223 is disposed between the slider 3222 and the inner wall of the adjusting hole 3211, so as to reduce the friction therebetween and improve the service life. Typically, the buffer 3223 is made of a flexible material, such as rubber or polyurethane.

In this embodiment, as shown in fig. 6 and 7, the slider 3222 is a rectangular block, the adjusting hole 3211 is a rectangular hole, and an inner diameter of the rectangular hole is larger than an outer diameter of the rectangular block, so that the rectangular block is in line contact with the connecting member 321 and slides along an inner wall direction of the rectangular hole, a force-bearing area between the slider 3222 and the connecting member 321 is increased, a sliding directionality of the slider is ensured, and the load of the slider 3222 is equalized and the stress concentration of the slider caused by bending is reduced.

Since the torsion arm 3 transmits the torsion force, the main force points are on both sides of the torsion arm 3 in the circumferential direction 200. In this embodiment, as shown in fig. 7, the number of the buffer members 3223 is two, and the two buffer members 3223 are respectively fixed to two sides of the rectangular block in the circumferential direction 200, so that the amount of the buffer members 3223 is reduced, and the structural arrangement is simplified.

As shown in fig. 5, in order to prevent the slider 3222 from sliding out of the adjusting hole 3211, a blocking wall 3212 extending toward the inside is further disposed on an inner wall surface of the adjusting hole 3211, the blocking wall 3212 is disposed at a side close to the stator for limiting the slider 3222 from sliding out of one side of the adjusting hole 3211, the pin assembly 322 further includes a limiting member 3224, and the limiting member 3224 is detachably connected to the connecting member 321 for limiting the slider 3222 from sliding out of the other side of the adjusting hole 3211. The stop member 3224 and the stop wall 3212 cooperate to limit the slider 3222 within the adjustment hole 3211 to prevent the slider 3222 from sliding out of the proximal or distal end of the adjustment hole 3211. The position-limiting member 3224 is detachably connected to the connecting member 321, so that the sliding block 3222 is conveniently installed in the adjusting hole 3211.

In order to facilitate hoisting of the connecting member 321, the connecting member 321 is further provided with hanging rings at both ends in the circumferential direction 200.

As shown in fig. 1 to 3, the barring body 1 includes the reduction gear box 12, the arm body 31 includes a first member 31a and a second member 31b, the first member 31a and the second member 31b form a mounting hole, and the arm body 31 is fitted in and mounted to the housing of the reduction gear box 12 through the mounting hole. The arm body 31 is separately provided in a combined form of the first member 31a and the second member 31b, and the arm body 31 is easily sleeved and mounted to the housing of the reduction gear box 12. To increase the coupling strength, the first member 31a and the second member 31b are flange-coupled to the housing of the reduction gear box 12.

As shown in fig. 3 and 5, the first part 31a and the second part 31b are provided with an ear seat 312 at ends far away from the mounting hole, two pins 3221 are provided with locking holes 3225, each pin 3221 passes through the locking hole 3225 and the ear seat 312 through a pin, so as to lock one pin 3221 to the first part 31a and the other pin 3221 to the second part 31b, and thus prevent the pin 3221 from falling off from the slider 3222.

As shown in fig. 5, the number of the locking holes 3225 is two, two locking holes 3225 are arranged at intervals along the length direction of the pin 3221, one locking hole 3225 is arranged corresponding to a position of the pin 3221 in the locking state, and the other locking hole 3225 is arranged corresponding to a position of the pin 3221 in the unlocking state. When the pin 3221 and the slider 3222 are in a connected state or a disconnected state, the pin can be locked at different positions through the pin, so that the receiving and fixing effects of the pin are improved.

As shown in fig. 1, the barring body 1 further includes a driving motor 11, an output shaft of the driving motor 11 is connected to an input end of a reduction gear box 12, the reduction gear box 12 has a first output shaft 121, one end of the adapter disc 2 is connected to the first output shaft 121, and the other end of the adapter disc 2 is used for flange connection with a rotor at a high-speed end of a driving chain of the wind generating set. In this embodiment, the driving force is provided by the driving motor 11, and compared with a hydraulic driving device, a hydraulic oil cylinder and a pipeline are omitted, so that the cost of the barring gear is reduced. The reduction gear box 12 can reduce the rotating speed of the driving motor 11 to provide larger torque at the output end, and the requirement of large torque force during single-blade installation is met.

As shown in fig. 1, the barring body 1 further includes a mechanical locking unit 13, one end of the mechanical locking unit 13 is connected to a housing of the reduction gear box 12, and the other end of the mechanical locking unit 13 is detachably connected to a second output shaft 122 of the reduction gear box 12, so that the drive train high speed end rotor is locked or unlocked. When the driving motor 11 drives the high-speed end rotor, the mechanical locking unit 13 is unlocked, and the driving motor 11 drives the driving chain high-speed end rotor to rotate through the first output shaft 121. Due to the meshing relationship of the internal gears of the reduction gear box 12, when the mechanical locking unit 13 locks the second output shaft 122 of the reduction gear box 12, at which all the output shafts of the reduction gear box 12 are locked, the high speed side rotor of the drive train connected to the first output shaft 121 is simultaneously locked to fix the high speed side rotor at a certain position. The second output shaft may be arranged at the high speed end of the gear box, the sub-high speed end or any other rotating shaft.

As shown in fig. 8, the mechanical locking unit 13 includes a support seat 131, a locking disk 132 and a locking shaft 133, the support seat 131 is connected to the casing of the reduction gear box 12, the locking disk 132 is mounted on the second output shaft 122, a plurality of locking holes 3225 are formed in the locking disk 132 at intervals in the circumferential direction, a fixing hole is formed in the support seat 131, and the locking shaft 133 passes through the fixing hole and is inserted into any one of the locking holes 3225 to lock the locking disk 132.

In other alternative embodiments, the first output shaft and the second output shaft may be the same shaft, and the adapter plate and the mechanical locking unit are respectively disposed at two ends of the same shaft.

As shown in fig. 9, the mechanical locking unit 13 further includes a protective cover 134, the protective cover 134 is connected to the support base 131 through a bracket, and the protective cover 134 covers the locking disk 132.

The embodiment also discloses a wind generating set, which comprises the barring gear. The barring gear is mainly used in the working condition of single-blade installation of the wind driven generator and used for rotating the hub to a required position so as to install the blades conveniently. Of course, the barring device can also be used in other working conditions of the wind generating set, for example, when the wind generating set is repaired, the blades are replaced.

While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The utility model provides a barring gear, its is used for wind generating set which characterized in that, it includes:

turning a gear body;

2. The barring device according to claim 1, wherein the torsion arm includes an arm body and a connection unit, a middle portion of the arm body is connected to the barring body, and both ends of the arm body are connected to a stator of the wind turbine generator set through the connection unit, respectively;

3. The turning gear according to claim 2, wherein the pin assembly comprises a pin and a slider, the slider is embedded in the adjusting hole and can slide in the adjusting hole within the preset range, and two ends of the pin respectively penetrate through the slider and the connecting hole.

4. The turning gear according to claim 3, characterized in that the pin assembly further comprises a buffer member disposed between the slider and an inner wall of the adjustment hole.

5. The turning gear of claim 4, wherein the sliding block is a rectangular block, and the adjusting hole is a rectangular hole having an inner diameter larger than an outer diameter of the rectangular block.

6. A jigger unit according to claim 5, wherein the number of the buffer members is two, and two of the buffer members are fixed to both sides of the rectangular block in the circumferential direction, respectively.

7. The turning gear according to claim 3, characterized in that the inner wall surface of the adjusting hole is further provided with a blocking wall extending towards the inside, the blocking wall is arranged at one side close to the stator and used for limiting the sliding block from sliding out of one side of the adjusting hole;

8. The barring device according to claim 3, wherein the barring body comprises a reduction gear box, the arm body comprises a first member and a second member, the first member and the second member form a mounting hole, and the arm body is fitted over and mounted to a housing of the reduction gear box through the mounting hole.

9. A barring gear as claimed in claim 8 wherein the ends of the first and second parts remote from the mounting hole are each provided with an ear mount and two of the pins are each provided with a locking hole, each pin passing through the locking hole and the ear mount by a pin to lock one pin to the first part and the other pin to the second part.

10. The barring gear according to claim 9 wherein the number of the locking holes is two, two of the locking holes being spaced apart along the length of the pin, one of the locking holes being located corresponding to a position of the pin in the locked state and the other locking hole being located corresponding to a position of the pin in the unlocked state.

11. Barring gear according to any of the claims 1-10, characterized in that the barring body comprises a drive motor and a reduction gearbox, the output shaft of the drive motor being connected to the input of the reduction gearbox, the reduction gearbox having the first output shaft, one end of the adapter disc being connected to the first output shaft, the other end of the adapter disc being adapted to be connected to a drive train high speed end rotor of the wind turbine.

12. The barring device according to claim 11 wherein the barring body further comprises a mechanical locking unit, one end of the mechanical locking unit is connected to a housing of the reduction gear box, and the other end of the mechanical locking unit is detachably connected to a second output shaft of the reduction gear box, so that the drive train high speed end rotor is locked or unlocked.

13. The barring device according to claim 12, wherein the mechanical locking unit includes a support base connected to a housing of the reduction gear box, a lock disk mounted to the second output shaft, and a lock shaft inserted through any one of the lock holes to lock the lock disk, the lock disk being provided with a plurality of lock holes at intervals in a circumferential direction, the support base being provided with a fixing hole.

14. Wind park according to any of claims 1 to 13, characterised in that it comprises a barring gear according to any of claims 1 to 13.