CN213318763U - Bolt multipoint synchronous fastening machine for variable pitch mechanism of wind driven generator - Google Patents
Bolt multipoint synchronous fastening machine for variable pitch mechanism of wind driven generator Download PDFInfo
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- CN213318763U CN213318763U CN202020983553.4U CN202020983553U CN213318763U CN 213318763 U CN213318763 U CN 213318763U CN 202020983553 U CN202020983553 U CN 202020983553U CN 213318763 U CN213318763 U CN 213318763U
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Abstract
The utility model discloses a bolt multipoint synchronous fastening machine of a variable pitch mechanism of a wind driven generator, which comprises a positioning support component and a bolt fastening component, wherein the positioning support component is used for being fixed with the variable pitch mechanism of the wind driven generator; the bolt fastening assembly can be rotatably installed on the positioning support assembly and comprises a plurality of electric wrenches which are arranged at intervals along the rotating direction of the bolt fastening assembly and used for fastening bolts on the variable pitch mechanism of the wind driven generator. In the technical scheme provided by the utility model, the electric wrench replaces a hydraulic torque wrench, so that the structure of a crank block of the hydraulic wrench is simplified into multi-stage or multi-stage planetary gear train transmission, and the structure is simple; the idle stroke which is invalid in the driving movement of the hydraulic wrench is removed, and the utilization rate of energy can be improved.
Description
Technical Field
The utility model relates to a bolt fastening technical field, in particular to aerogenerator becomes synchronous fastening machine of oar mechanism bolt multiple spot.
Background
The fastening requirements of the existing variable-pitch mechanism of the wind driven generator are that a plurality of hydraulically-driven torque wrenches are adopted to perform bolt fastening operation. In the operation process, each hydraulic wrench needs an operator to manually adjust the moving position (corresponding bolt) and align and position. In addition, in addition to a correspondingly configured hydraulic torque wrench, the entire system also needs to be provided with a separate hydraulic pump station. In the whole process of bolt fastening of the variable pitch mechanism, an operator is required to continuously and repeatedly move the hydraulic wrench and adjust the output pressure of the hydraulic pump station.
Besides the operation method of manually moving the hydraulic torque wrench, a hydraulic wrench special tool designed by a certain manufacturer is also provided. Not only a plurality of wrenches are fixed on a special tool, but also the synchronous locking of the bolts by the wrenches and the work of aligning the positions of the bolts by indexing are realized. This type of operation can reduce the labor intensity of the operator compared to the former type, but the fastening accuracy and the fastening repetition accuracy of the hydraulic torque wrench to the bolt are poor in efficiency and quality due to the difference in mechanical characteristics and machining accuracy of the hydraulic torque wrench itself.
Because the hydraulic torque wrench is adopted for fastening the bolt, power is converted into oil pressure by electric energy, then pressure is converted into bolt fastening torque (mechanical energy), the power conversion links are multiple, the energy loss is large, and in-process monitoring and data acquisition (higher cost) are not easy to carry out. The mechanical action principle of the hydraulic torque wrench is a crank-slider mechanism, in the mechanism, the action of a slider (a piston) is reciprocating, namely the action efficiency of the part is only 50%, half of the part is a working stroke, the return stroke is an idle stroke (no action is generated), and the mechanical transmission efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a aerogenerator becomes synchronous tightener of oar mechanism bolt multiple spot aims at solving the problem of the present a great deal of drawback that adopts hydraulic torque wrench to carry out bolt-up's mode and exists.
In order to achieve the above object, the utility model provides a wind-driven generator becomes synchronous fastening machine of oar mechanism bolt multiple spot, include:
the positioning support assembly is used for being fixed with a variable pitch mechanism of the wind driven generator; and the number of the first and second groups,
the bolt fastening assembly can be rotatably installed on the positioning support assembly and comprises a plurality of electric wrenches which are arranged at intervals along the rotating direction of the bolt fastening assembly and used for fastening bolts on the wind driven generator variable pitch mechanism.
Optionally, the positioning support assembly includes a plurality of positioning arms arranged along the rotation direction and capable of extending and retracting along a radial direction, one end of each of the plurality of positioning arms close to the rotation axis of the bolt fastening assembly is connected, and the other end of each of the plurality of positioning arms far away from the rotation axis is used for fixing with the wind turbine pitch control mechanism, wherein the radial direction is a direction perpendicular to the rotation axis.
Optionally, the positioning arm includes a fixed arm and a telescopic arm, both the fixed arm and the telescopic arm extend along the radial direction, one end of the telescopic arm close to the rotation axis is movably sleeved in one end of the fixed arm away from the rotation axis along the radial direction, one end of the telescopic arm away from the rotation axis is used for being fixed with the wind turbine variable pitch mechanism, and a telescopic arm positioning hole is formed;
the positioning arm is provided with an extending state in which the telescopic arm extends out and is fixed with the variable pitch mechanism of the wind driven generator and a contracting state opposite to the extending state, a positioning arm bolt is installed on the fixed arm, a plurality of positioning arm bolt holes are formed in the telescopic arm corresponding to the positioning arm bolt, and when the positioning arm is in the extending state and the contracting state, the positioning arm bolt penetrates through the fixed arm and forms positioning fit with the corresponding positioning arm bolt holes.
Optionally, the positioning support assembly further comprises a reinforcing beam and a hanging ring, the reinforcing beam is connected between any two adjacent fixing arms, and the hanging ring is arranged on the reinforcing beam.
Optionally, the positioning support assembly further includes a rotation center shaft extending in the direction of the rotation axis, the rotation center shaft is connected to the plurality of positioning arms, and the bolt fastening assembly is mounted at the rotation center shaft; and/or the positioning arms are three, and the included angles of any two adjacent positioning arms are distributed according to the fan variable-pitch rotary support hole positions.
Optionally, the bolt fastening assembly includes a rotation center base rotatably mounted on the positioning support assembly, and a plurality of wrench mounting arms extending in a radial direction, the wrench mounting arms being arranged in the rotation direction, and being detachably mounted on the rotation center base at an end close to a rotation axis of the bolt fastening assembly, and the electric wrenches being respectively mounted at ends of the wrench mounting arms away from the rotation axis, wherein the radial direction is a direction perpendicular to the rotation axis.
Optionally, the wrench mounting arm comprises:
the telescopic arm fixing sleeve extends along the radial direction, and one end of the telescopic arm fixing sleeve is detachably arranged on the rotary center seat;
the telescopic guide rail extends along the radial direction, one end of the telescopic guide rail can be movably sleeved in the other end of the telescopic arm fixing sleeve along the radial direction, and the other end of the telescopic guide rail is provided with a mounting seat; (ii) a
The lifting platform can be movably arranged on the mounting seat along the direction of the rotation axis;
the telescopic driving device is used for driving the mounting seat to move along the radial direction, and the lifting driving device is used for driving the lifting table to move along the direction of the rotating axis;
wherein the plurality of electric wrenches are respectively mounted on the lifting tables of the plurality of wrench mounting arms.
Optionally, the telescopic driving device includes a telescopic driving motor, a pulley transmission mechanism, and a ball screw transmission mechanism arranged along the radial direction, the telescopic driving motor is mounted on the telescopic arm fixing sleeve, a transmission shaft of the telescopic driving motor is in transmission connection with a screw nut of the ball screw transmission mechanism through the pulley transmission mechanism, so as to drive a driving screw of the ball screw transmission mechanism to move along the radial direction, and one end of the driving screw is connected with the mounting seat; and/or the bolt fastening assembly further comprises an inclined strut, and the inclined strut is connected between any two adjacent telescopic arm fixing sleeves; and/or a protective guard is arranged on the mounting seat and is wound on the periphery of the lifting platform and the electric wrench on the mounting seat.
Optionally, the wrench mounting arms are four, an included angle between any two adjacent wrench mounting arms is 90 °, the rotation center base is correspondingly provided with four mounting surfaces, the four wrench mounting arms are respectively mounted on the four mounting surfaces, and each wrench mounting arm is provided with one electric wrench; and/or the presence of a gas in the gas,
and a bearing is arranged on the rotary center seat.
Optionally, a torque sensor is mounted on the electric wrench.
In the technical scheme provided by the utility model, the electric wrench replaces a hydraulic torque wrench, so that the structure of a crank block of the hydraulic wrench is simplified into multi-stage or multi-stage planetary gear train transmission, and the structure is simple; the idle stroke which is invalid in the driving movement of the hydraulic wrench is removed, and the utilization rate of energy can be improved. The multi-point synchronous bolt fastening machine for the variable pitch mechanism of the wind driven generator simplifies operation requirements, reduces labor intensity of workers, and can reduce the number of operators and labor cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of a bolt multipoint synchronous fastening machine of a pitch mechanism of a wind turbine provided by the present invention;
FIG. 2 is a schematic structural view of a bolt multi-point synchronous fastening machine of a pitch mechanism of the wind turbine generator in FIG. 1, wherein a positioning support assembly and a bolt fastening assembly are in a contracted state;
FIG. 3 is a schematic structural view of a bolt multi-point synchronous fastening machine of a pitch mechanism of the wind turbine generator in FIG. 1, wherein a positioning support assembly and a bolt fastening assembly are in an extended state;
FIG. 4 is a schematic structural view of the positioning support assembly of FIG. 3, wherein the positioning support assembly is in a retracted state;
FIG. 5 is a schematic view of the positioning support assembly of FIG. 3, wherein the positioning support assembly is in an extended position;
FIG. 6 is a schematic structural view of the bolt fastening assembly of FIG. 3, wherein the bolt fastening assembly is in a contracted state;
FIG. 7 is a schematic structural view of the bolt fastening assembly of FIG. 3, wherein the bolt fastening assembly is in an extended state;
FIG. 8 is an exploded view of FIG. 7;
fig. 9 is a schematic structural view of a part of fig. 7.
The reference numbers illustrate: the multi-point synchronous bolt fastening machine 100 for the pitch mechanism of the wind driven generator, a positioning support component 110, a bolt fastening component 120, an electric wrench 1, a torque sensor 11, an electric wrench motor 12, a floating sleeve component 13, a positioning arm 2, a telescopic arm 22, a telescopic arm positioning hole 221, a positioning arm bolt hole 222, a positioning arm bolt 23, a reinforcing beam 3, a lifting ring 31, a rotary central shaft 4, a rotary central seat 5, a bearing 51, a fixing hole 52, a wrench mounting arm 6, a telescopic arm fixing sleeve 61, a positioning bottom plate 611, a mounting hole 612, a linear bearing 613, a telescopic guide rail 62, a mounting seat 63, a protective guard 631, a lifting platform 64, a telescopic driving device 65, a telescopic driving motor 651, a belt wheel transmission mechanism 652, a lead screw nut 653, a driving lead screw 654, a diagonal brace 7 and the pitch mechanism 200 of the wind driven.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The fastening requirements of the existing variable-pitch mechanism of the wind driven generator are that a plurality of hydraulically-driven torque wrenches are adopted to perform bolt fastening operation. In the operation process, each hydraulic wrench needs an operator to manually adjust the moving position (corresponding bolt) and align and position. In addition, in addition to a correspondingly configured hydraulic torque wrench, the entire system also needs to be provided with a separate hydraulic pump station. In the whole process of bolt fastening of the variable pitch mechanism, an operator is required to continuously and repeatedly move the hydraulic wrench and adjust the output pressure of the hydraulic pump station.
Besides the operation method of manually moving the hydraulic torque wrench, a hydraulic wrench special tool designed by a certain manufacturer is also provided. Not only a plurality of wrenches are fixed on a special tool, but also the synchronous locking of the bolts by the wrenches and the work of aligning the positions of the bolts by indexing are realized. This type of operation can reduce the labor intensity of the operator compared to the former type, but the fastening accuracy and the fastening repetition accuracy of the hydraulic torque wrench to the bolt are poor in efficiency and quality due to the difference in mechanical characteristics and machining accuracy of the hydraulic torque wrench itself.
Because the hydraulic torque wrench is adopted for fastening the bolt, power is converted into oil pressure by electric energy, then pressure is converted into bolt fastening torque (mechanical energy), the power conversion links are multiple, the energy loss is large, and in-process monitoring and data acquisition (higher cost) are not easy to carry out. The mechanical action principle of the hydraulic torque wrench is a crank-slider mechanism, in the mechanism, the action of a slider (a piston) is reciprocating, namely the action efficiency of the part is only 50%, half of the part is a working stroke, the return stroke is an idle stroke (no action is generated), and the mechanical transmission efficiency is low.
In view of this, the utility model provides a aerogenerator becomes synchronous fastening machine of oar mechanism bolt multiple spot, fig. 1 to fig. 9 do the utility model discloses an aerogenerator becomes synchronous fastening machine of oar mechanism bolt multiple spot's an embodiment.
Specifically, referring to fig. 1 to 3, in the present embodiment, the bolt multipoint synchronous fastening machine 100 of the pitch mechanism of the wind turbine includes a positioning support assembly 110 and a bolt fastening assembly 120.
The positioning support assembly 110 is used for fixing with the wind turbine pitch mechanism 200. Referring to fig. 1, the positioning support assembly 110 is fixed on an end surface of the wind turbine pitch mechanism 200. In order to enable the positioning support assembly 110 to be applied to the wind turbine pitch-changing mechanism 200 with different specifications and models, please refer to fig. 4 and 5, in this embodiment, the positioning support assembly 110 includes a plurality of positioning arms 2 arranged along the rotation direction and capable of extending and retracting along the radial direction (the specific number of the positioning arms 2 may not be specially limited, specifically, refer to fig. 4, in this embodiment, three positioning arms 2 are provided, and the included angles of any two adjacent positioning arms 2 are distributed according to the fan pitch-changing rotation support hole positions, so that the structure of the positioning support assembly 110 is simple and the overall strength is good), one end of the positioning arms 2 close to the rotation axis of the bolt fastening assembly 120 is connected, and the other end far away from the rotation axis is used for fixing with the wind turbine pitch-changing mechanism 200, wherein the radial direction is a direction perpendicular to the axis of rotation. Therefore, the positioning arm 2 can be adjusted in a telescopic manner according to different specifications and models of the wind turbine pitch-changing mechanism 200, so that the positioning support assembly 110 can be fixed on the end surface of the wind turbine pitch-changing mechanism 200.
Specifically, referring to fig. 1 to 3, in this embodiment, the positioning arm 2 includes a fixed arm and a telescopic arm 22, both the fixed arm and the telescopic arm 22 extend along the radial direction, one end of the telescopic arm 22 close to the rotation axis is movably sleeved in one end of the fixed arm away from the rotation axis along the radial direction, one end of the telescopic arm 22 away from the rotation axis is used for fixing with the wind turbine pitch varying mechanism 200, and is provided with a telescopic arm positioning hole 221; the positioning arm 2 has an extending state in which the telescopic arm 22 extends out and is fixed with the wind turbine pitch control mechanism 200, and a contracting state opposite to the extending state, the fixing arm is provided with a positioning arm bolt 23, the telescopic arm 22 is provided with a plurality of positioning arm bolt holes 222 corresponding to the positioning arm bolt 23, and when the positioning arm 2 is in the extending state and the contracting state, the positioning arm bolt 23 penetrates through the fixing arm and forms positioning fit with the corresponding positioning arm bolt hole 222. Thus, the proper size can be preset for the pitch of the positioning holes 221 of the telescopic arm with different diameters, and corresponding positioning arm pin holes 222 can be machined; when the telescopic arm 22 is extended to a proper position, the positioning arm bolt 23 is inserted, and the telescopic arm can be accurately fixed on a correct positioning size.
Specifically, referring to fig. 1 to 3, in this embodiment, the positioning support assembly 110 further includes a reinforcing beam 3 and a hanging ring 31, the reinforcing beam 3 is connected between any two adjacent fixing arms, and the hanging ring 31 is disposed on the reinforcing beam 3. The reinforcing beam 3 is provided to improve the overall strength of the positioning support assembly 110. By arranging the hanging ring 31, the bolt multi-point synchronous fastening machine 100 of the variable pitch mechanism of the wind driven generator can be hoisted through the hanging ring 31.
The bolt fastening assembly 120 is rotatably mounted on the positioning support assembly 110 (specifically, please refer to fig. 2 and 4, in this embodiment, the positioning support assembly 110 further includes a rotation center shaft 4 extending along the direction of the rotation axis, the rotation center shaft 4 is connected to the plurality of positioning arms 2, the bolt fastening assembly 120 is mounted at the rotation center shaft 4, the bolt fastening assembly 120 is conveniently rotatably mounted on the positioning support assembly 110 by the rotation center shaft 4, the bolt fastening assembly 120 includes a plurality of electric wrenches 1, and the electric wrenches 1 are arranged at intervals along the rotation direction of the bolt fastening assembly 120 for fastening bolts on the wind turbine pitch control mechanism 200. The bolt multipoint synchronous fastening machine 100 for the variable pitch mechanism of the wind driven generator fastens bolts through the electric wrench 1, and compared with a hydraulic torque wrench, the energy conversion of the electric wrench 1 is changed into electric energy which is directly converted into torque (mechanical energy), so that intermediate transition links are reduced, and the torque output is more direct; referring to fig. 6 and 7, the power input of the electric wrench 1 is the electric wrench motor 12, the movement mode of the electric wrench motor is consistent with the rotation direction of the bolt, and the electric wrench motor 12 does not have redundant ineffective action during the rotation. The energy loss is small, and the transmission efficiency is high; referring to fig. 6 and 7, in this embodiment, the torque sensor 11 is installed on the electric wrench 1, so that a torque value during a bolt fastening process can be monitored in real time, and closed-loop control of a bolt fastening torque can be completed by detecting real-time power of operation of the electric wrench motor 12 and comparing and calculating an actual torque value at a torque output end. The bolt fastening precision and the repetition precision are very high, and intelligent quality management and control are easily realized, namely the bolt fastening process is controllable, the intelligence is high, and a manufacturer can conveniently use the bolt fastening process to carry out quality monitoring and process management.
Referring to fig. 6 to 9, in the present embodiment, the bolt fastening assembly 120 includes a rotation center base 5 and a plurality of wrench mounting arms 6 extending in a radial direction, the rotation center base 5 is rotatably mounted on the positioning support assembly 110, the wrench mounting arms 6 are arranged along the rotation direction, and one end of the wrench mounting arm close to the rotation axis of the bolt fastening assembly 120 is detachably mounted on the rotation center base 5 (the specific arrangement manner of the wrench mounting arm 6 detachably mounted on the rotation center base 5 may not be particularly limited, and specifically, referring to fig. 8 and 9, in the present embodiment, one end of the wrench mounting arm 6 close to the rotation axis of the bolt fastening assembly 120 is provided with a positioning bottom plate 611, and the positioning bottom plate 611 is mounted on the rotation center base 5 through a screw, the positioning bottom plate 611 and the rotation center base 5 are respectively provided with a mounting hole 612 and a fixing hole 52 corresponding to the screw connector, and the plurality of electric wrenches 1 are respectively mounted at one ends of the wrench mounting arms 6 far away from the rotation axis, wherein the radial direction is perpendicular to the rotation axis. The bolt fastening assembly 120 adopts a tooling structure with a modular design. For the variable pitch components 200 of the wind power generators of different specifications and models, the construction requirements of different sizes of the rotation centers of the bolts or the synchronous locking quantity can be met by replacing the rotation center base 5 (see fig. 6, in this embodiment, the bearing 51 is installed on the rotation center base 5, and the rotation center shaft 4 is installed at the bearing 51). By doing so, the cost of purchasing the equipment again by the user is reduced, and the trial-manufacture period for developing new models by the user is also reduced.
Further, referring to fig. 6, 7 and 9, in the present embodiment, the wrench installation arm 6 includes a telescopic arm fixing sleeve 61, a telescopic guide rail 62, a lifting platform 64, a telescopic driving device 65 and a lifting driving device; the telescopic arm fixing sleeve 61 extends along the radial direction, and one end of the telescopic arm fixing sleeve 61 is detachably mounted on the rotary center base 5; the telescopic guide rail 62 extends along the radial direction, one end of the telescopic guide rail 62 is movably sleeved in the other end of the telescopic arm fixing sleeve 61 along the radial direction (please refer to fig. 9, in this embodiment, a linear bearing 613 is installed on the telescopic arm fixing sleeve 61 corresponding to the telescopic guide rail 62), and an installation seat 63 is installed at the other end of the telescopic guide rail 62; the lifting platform 64 is movably mounted on the mounting base 63 along the direction of the rotation axis; the telescopic driving device 65 is used for driving the mounting base 63 to move along the radial direction, and the lifting driving device is used for driving the lifting table 64 to move along the direction of the rotation axis; wherein the plurality of electric wrenches 1 are respectively mounted on the lifting tables 64 of the plurality of wrench mounting arms 6. The wrench mounting arm 6 is an adjustable telescopic arm, and can meet the positioning requirements of different sizes (bolt center distance size). Moreover, the lifting and extending actions of the electric wrench 1 are electrically controlled, so that the great labor intensity caused by manual operation can be avoided, and the intelligent operation can be realized more easily.
Further, referring to fig. 7 and 9, in this embodiment, the telescopic driving device 65 includes a telescopic driving motor 651, a pulley transmission mechanism 652, and a ball screw transmission mechanism disposed along the radial direction, the telescopic driving motor 651 is mounted on the telescopic arm fixing sleeve 61, a transmission shaft of the telescopic driving motor 651 is in transmission connection with a screw nut 653 of the ball screw transmission mechanism through the pulley transmission mechanism 652 to drive a driving screw 654 of the ball screw transmission mechanism to move along the radial direction, and one end of the driving screw 654 is connected with the mounting base 63. The telescopic driving device 65 adopts a screw rod transmission mode and a linear guide rail sliding mode. The driving unit is a servo motor, and the synchronous change of any size of the wrench mounting arm 6 can be realized through program or manual setting. In this way, whatever the final size of the consumer product (or design change) can be set as desired in the control program.
Referring to fig. 7 and 8, in the present embodiment, the bolt fastening assembly 120 further includes a diagonal brace 7, and one diagonal brace 7 is connected between any two adjacent telescopic arm fixing sleeves 61. By the arrangement of the sprags 7, the overall strength of the bolt fastening assembly 120 can be improved.
Referring to fig. 7, in the present embodiment, a guard rail 631 is mounted on the mounting base 63, and the guard rail 631 surrounds the lifting platform 64 and the electric wrench 1 on the mounting base 63. The guard rail 631 can perform a protection function.
As for the specific number of the wrench mounting arms 6 arranged on the bolt fastening assembly 120, it is not particularly limited, and specifically, please refer to fig. 6 to 8, in this embodiment, four wrench mounting arms 6 are arranged, an included angle between any two adjacent wrench mounting arms 6 is 90 °, the rotation center base 5 is correspondingly provided with four mounting surfaces, the four wrench mounting arms 6 are respectively mounted on the four mounting surfaces, and each wrench mounting arm 6 is mounted with one electric wrench 1. Thus, the bolt fastening assembly 120 has a simple overall structure and high working efficiency.
In the technical scheme provided by the utility model, the electric wrench 1 replaces a hydraulic torque wrench, so that the structure of a crank block of the hydraulic wrench is simplified into multi-stage or multi-stage planetary gear train transmission, and the structure is simple; the idle stroke which is invalid in the driving movement of the hydraulic wrench is removed, and the utilization rate of energy can be improved. The multi-point synchronous bolt fastening machine 100 for the variable pitch mechanism of the wind driven generator simplifies operation requirements, reduces labor intensity, and can reduce the number of operators and labor cost.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a synchronous tightener of aerogenerator becomes oar mechanism bolt multiple spot which characterized in that includes:
the positioning support assembly is used for being fixed with a variable pitch mechanism of the wind driven generator; and the number of the first and second groups,
the bolt fastening assembly can be rotatably installed on the positioning support assembly and comprises a plurality of electric wrenches which are arranged at intervals along the rotating direction of the bolt fastening assembly and used for fastening bolts on the wind driven generator variable pitch mechanism.
2. The wind turbine pitch mechanism bolt multipoint synchronous fastening machine according to claim 1, wherein the positioning support assembly comprises a plurality of positioning arms which are arranged along the rotation direction and can be extended and retracted along a radial direction, one ends of the positioning arms, which are close to the rotation axis of the bolt fastening assembly, are connected, and the other ends, which are far away from the rotation axis, are used for being fixed with the wind turbine pitch mechanism, wherein the radial direction is a direction perpendicular to the rotation axis.
3. The wind driven generator pitch mechanism bolt multipoint synchronous fastening machine as claimed in claim 2, wherein the positioning arm comprises a fixed arm and a telescopic arm, the fixed arm and the telescopic arm both extend along the radial direction, one end of the telescopic arm close to the rotation axis is movably sleeved in one end of the fixed arm far away from the rotation axis along the radial direction, one end of the telescopic arm far away from the rotation axis is used for fixing with the wind driven generator pitch mechanism, and a telescopic arm positioning hole is arranged;
the positioning arm is provided with an extending state in which the telescopic arm extends out and is fixed with the variable pitch mechanism of the wind driven generator and a contracting state opposite to the extending state, a positioning arm bolt is installed on the fixed arm, a plurality of positioning arm bolt holes are formed in the telescopic arm corresponding to the positioning arm bolt, and when the positioning arm is in the extending state and the contracting state, the positioning arm bolt penetrates through the fixed arm and forms positioning fit with the corresponding positioning arm bolt holes.
4. The wind turbine pitch mechanism bolt multipoint synchronous fastening machine according to claim 3, wherein the positioning support assembly further comprises a reinforcing beam and a lifting ring, the reinforcing beam is connected between any two adjacent fixing arms, and the lifting ring is arranged on the reinforcing beam.
5. The wind turbine pitch mechanism bolt multipoint synchronous fastening machine as claimed in claim 2, wherein said positioning support assembly further comprises a rotation center shaft extending in the direction of said rotation axis, said rotation center shaft being connected to said plurality of positioning arms, said bolt fastening assembly being mounted at said rotation center shaft; and/or the positioning arms are three, and the included angles of any two adjacent positioning arms are distributed according to the fan variable-pitch rotary support hole positions.
6. The wind turbine pitch mechanism bolt multipoint synchronous fastening machine as claimed in claim 1, wherein said bolt fastening assembly comprises a rotation center base rotatably mounted on said positioning support assembly and a plurality of wrench mounting arms extending in a radial direction, said plurality of wrench mounting arms being arranged in said rotation direction and detachably mounted on said rotation center base at an end close to a rotation axis of said bolt fastening assembly, said plurality of electric wrenches being respectively mounted on an end of said plurality of wrench mounting arms away from said rotation axis, wherein said radial direction is a direction perpendicular to said rotation axis.
7. The wind turbine pitch mechanism bolt multipoint synchronous fastener machine of claim 6, wherein said wrench mounting arm comprises:
the telescopic arm fixing sleeve extends along the radial direction, and one end of the telescopic arm fixing sleeve is detachably arranged on the rotary center seat;
the telescopic guide rail extends along the radial direction, one end of the telescopic guide rail can be movably sleeved in the other end of the telescopic arm fixing sleeve along the radial direction, and the other end of the telescopic guide rail is provided with a mounting seat;
the lifting platform can be movably arranged on the mounting seat along the direction of the rotation axis;
the telescopic driving device is used for driving the mounting seat to move along the radial direction, and the lifting driving device is used for driving the lifting table to move along the direction of the rotating axis;
wherein the plurality of electric wrenches are respectively mounted on the lifting tables of the plurality of wrench mounting arms.
8. The wind turbine pitch mechanism bolt multipoint synchronous fastening machine according to claim 7, wherein the telescopic driving device comprises a telescopic driving motor, a pulley transmission mechanism and a ball screw transmission mechanism arranged along the radial direction, the telescopic driving motor is mounted on the telescopic arm fixing sleeve, a transmission shaft of the telescopic driving motor is in transmission connection with a screw nut of the ball screw transmission mechanism through the pulley transmission mechanism and is used for driving a driving screw of the ball screw transmission mechanism to move along the radial direction, and one end of the driving screw is connected with the mounting seat; and/or the presence of a gas in the gas,
the bolt fastening assembly further comprises an inclined strut, and the inclined strut is connected between any two adjacent telescopic arm fixing sleeves; and/or the presence of a gas in the gas,
the protective guard is arranged on the mounting seat and wound on the peripheries of the lifting platform and the electric wrench on the mounting seat.
9. The wind driven generator pitch mechanism bolt multipoint synchronous fastening machine as claimed in claim 6, wherein there are four wrench mounting arms, the included angle between any two adjacent wrench mounting arms is 90 °, the rotation center seat is correspondingly provided with four mounting surfaces, the four wrench mounting arms are respectively mounted on the four mounting surfaces, and each wrench mounting arm is mounted with one electric wrench; and/or the presence of a gas in the gas,
and a bearing is arranged on the rotary center seat.
10. The wind turbine pitch mechanism bolt multipoint synchronous fastening machine as claimed in claim 1, wherein a torque sensor is mounted on the electric wrench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020983553.4U CN213318763U (en) | 2020-06-02 | 2020-06-02 | Bolt multipoint synchronous fastening machine for variable pitch mechanism of wind driven generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020983553.4U CN213318763U (en) | 2020-06-02 | 2020-06-02 | Bolt multipoint synchronous fastening machine for variable pitch mechanism of wind driven generator |
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| CN202020983553.4U Active CN213318763U (en) | 2020-06-02 | 2020-06-02 | Bolt multipoint synchronous fastening machine for variable pitch mechanism of wind driven generator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601156A (en) * | 2021-08-05 | 2021-11-05 | 江苏扬子鑫福造船有限公司 | Hydraulic nut locking device for marine propeller |
| CN114378754A (en) * | 2022-02-15 | 2022-04-22 | 上海电气风电集团股份有限公司 | Auxiliary tool for installing wind turbine generator gearbox expansion sleeve |
-
2020
- 2020-06-02 CN CN202020983553.4U patent/CN213318763U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113601156A (en) * | 2021-08-05 | 2021-11-05 | 江苏扬子鑫福造船有限公司 | Hydraulic nut locking device for marine propeller |
| CN113601156B (en) * | 2021-08-05 | 2022-05-13 | 江苏扬子鑫福造船有限公司 | Hydraulic nut locking device for marine propeller |
| CN114378754A (en) * | 2022-02-15 | 2022-04-22 | 上海电气风电集团股份有限公司 | Auxiliary tool for installing wind turbine generator gearbox expansion sleeve |
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