CN102635495A

CN102635495A - Automatic pitch-adjusting wind wheel

Info

Publication number: CN102635495A
Application number: CN201210109250XA
Authority: CN
Inventors: 史宏; 张理罡; 刘延飞
Original assignee: JIANGYIN GIANSUN PRECISION MACHINERY PARTS CO Ltd
Current assignee: JIANGYIN GIANSUN PRECISION MACHINERY PARTS CO Ltd
Priority date: 2012-04-16
Filing date: 2012-04-16
Publication date: 2012-08-15
Anticipated expiration: 2032-04-16
Also published as: CN102635495B

Abstract

The invention relates to a wind wheel capable of automatically adjusting the pitch by the centrifugal force generated by a blade when the wind wheel of a wind motor rotates. The wind wheel comprises a hub sliding sleeve mechanism, disc spring mechanisms, spiral groove mechanisms, a synchronous connecting rod mechanism and a damping buffer gear, wherein the hub sliding sleeve mechanism comprises a main shaft (1), a hub body (2), cantilever shafts (3), sliding sleeves (4), the blade (5) and a fixed sleeve (9); the three sets of disc spring mechanisms are respectively arranged at the ends of the three cantilever shafts (3) and the three sliding sleeves (4), and extend into the blade (5); the three sets of spiral groove mechanisms are available; and each set of spiral groove mechanism comprises two pin shafts (18), four needle roller bearings (19), a sleeve (20) and two-way spiral grooves (21) arranged at the ends of the sliding sleeves (4). The wind wheel not only can reduce the start-up wind speed, but also can adjust the pitch forward during strong wind, thus being beneficial to reducing the load of the blade; and a reliable damping buffer device is available during the pitch-adjusting process, so that a whole machine is simple in structure, small in volume, long in service life and good in machining technology.

Description

Automatically become the oar wind wheel

Technical field

The present invention relates to technical field of wind power generator, is a kind of wind wheel that utilizes the centrifugal force that produces on wind-powered electricity generation machine wind wheel when revolution blade to become automatically oar specifically.

Background technique

Wind-driven generator need be installed in wind-resources area plentifully; These areas are awful weather often; Wind-force changes violent variable; This just makes wind-driven generator must have the ability that adapts to various different wind speed (comprising typhoon), and we hope that wind-driven generator starts at low wind speed, can high efficiency generate electricity at rated wind speed; Under strong wind, fitful wind, typhoon situation, still can move and can not damage---can reach this purpose through changing the propeller pitch angle of wind wheel blade under different wind speed, the common change oar technology of paying close attention to of wind-powered electricity generation industry that Here it is.

Relevant therewith both at home and abroad patent is a lot, and some are through detecting wind direction, wind speed signal change wind wheel blade through electrical control actuator after software program is handled propeller pitch angle, being referred to as initiatively to become oar; The propeller pitch angle that other centrifugal force that are blade produces when directly utilizing the suffered blast of wind wheel perhaps to utilize wind wheel to rotate change blade is called passive paddle changing.All there is mechanism's complicacy in known passive paddle changing patented technology, volume is big, the life-span is short, cost is high, does not have shortcomings such as damping buffering device, and known passive paddle changing technology all can only become oar by negative sense.

Summary of the invention

The objective of the invention is to overcome above-mentioned deficiency, provide a kind of can negative sense and forward become oar and become in the oar process and have reliable damping buffering device, and simple for structure, volume is little, the automatic change oar wind wheel of long service life.

The objective of the invention is to realize like this: a kind of automatic change oar wind wheel is characterized in that said wind wheel comprises totally five mechanisms of wheel hub slider mechanism, dish spring mechanism, spiral chute mechanism, synchronization link mechanism and damping buffering mechanism;

Said wheel hub slider mechanism; Comprise main shaft, hub body, cantilevered axle, sliding sleeve, blade, fixed cover and round nut; In the middle of the hub body is a tri-prismoid; By protruding three cantilevered axle of three side planes of tri-prismoid, three cantilevered axle and hub body are linked to be an integral body, and three sliding sleeves are enclosed within respectively and both can have rotated also on three cantilevered axle and can move axially; Three blades are connected on three sliding sleeves; Round nut is pressed on the hub body, and taper hole in the middle of the hub body closely is connected with outer cone on the main shaft, and fixed cover covers on outside the sliding sleeve and the flange through the fixed cover end is fixed on the tri-prismoid side plane; The length of fixed cover is greater than the outside stroke of motion of sliding sleeve, simultaneously because slide in the fixed cover and when moving on the cantilevered axle gas of sliding sleeve back annular space can only be from the gap between fixed cover and the sliding sleeve turnover and can produce damping function (being similar to inflator);

There are three covers in said dish spring mechanism; Every cover dish spring mechanism be contained in said hub body three cantilevered axle and three sliding sleeves the end and extend into the inside of blade; Every cover dish spring mechanism comprises big socket head screw, leader casing, dish spring, filler ring, ball and lock screw; A plurality of balls are contained in and form a thrust bearing between filler ring and the sliding sleeve breech face, and this thrust bearing makes to slide under the dish spring compressive state and still can on the cantilevered axle of hub body, rotate flexibly, and the leader casing small end has two boss; When big socket head screw is pushed down leader casing; Two boss stretch into terminal two of cantilevered axle recessed poor in, leader casing can not be rotated, the lock screw on the leader casing withstands big socket head screw again, and that socket head screw can not be rotated is loosening;

There are three covers in said spiral chute mechanism; Every cover spiral chute mechanism comprises the two-way spiral groove (there are four two-way spiral grooves each sliding sleeve end) of two bearing pins, four needle bearings, sleeve pipe and sliding sleeve ends; The center line of two-way spiral groove is the curve that satisfies the best two-way change oar function of blower fan; Two orthogonal cantilevered axle afterbodys that pass said hub body of bearing pin, the termination of bearing pin is equipped with needle bearing and is extend in the two-way spiral groove of sliding sleeve end; Because two bearing pins are fixed on the cantilevered axle of hub body; When sliding sleeve moves axially; Because the effect of sliding sleeve end convolution groove, sliding sleeve will be promoted rotation by bearing pin and needle bearing, and sleeve pipe wraps in outside the cylindrical of sliding sleeve end and all covers spiral chute mechanism; It stops grease to leak, and makes needle bearing and two-way spiral groove long-term work in lubricant oil.

Said synchronization link mechanism is made up of three connecting rods, six roots of sensation pin, six plain radial bearings, six screws, six large washers, six pressure rings, Screw, Cock screw and synchronous flanges.Six roots of sensation pin has three to be installed on three sliding sleeves, and is locking with three Cock screws; There are three to be installed on the synchronous flange, use three Cock screws locking equally.Every connecting rod one end is enclosed within on the sliding sleeve through plain radial bearing, and the other end is enclosed within on the synchronous flange through plain radial bearing, makes the plain radial bearing location with screw, large washer, pressure ring and Screw.Because flange can only be that rotate at the center with the main shaft synchronously, such three sliding sleeves are synchronized flange and pin and can only be synchronized with the movement within the specific limits through connecting rod;

Said damping buffering mechanism comprises preceding supporting ring, back supporting ring, two moving dividing plates and a static baffle; Preceding supporting ring makes synchronous flange main shaft upper limit (can only rotate) with the back supporting ring on the one hand; Enclose seal action through the O shape in the middle of the forward and backward supporting ring endoporus on the other hand; Pass the elongated slot of static baffle in the middle of spindle nose and be divided into two halves to annular space; Two moving dividing plates are fixed in the synchronous flange inner chamber and rotate together in company with the footwork orchid; The moving dividing plate of each piece is divided into two little annular spaces to the annular space that static baffle is divided into two halves more again; When synchronous flange rotates, will drive two moving dividing plates and rotate,, thereby make the rotation of synchronous flange realize damping buffering because the grease in two little annular spaces that the moving dividing plate of each piece separates can only flow to another little annular space from a little annular space through the damping hole on the moving dividing plate.

The present invention becomes the oar wind wheel automatically, and said moving dividing plate is made by spring steel plate, and the centre cuts out a H shape, and damping hole just is drilled in the centermost of H.When high-voltage oil cavity pressure is excessive, can be crooked behind the two ㄩ shape tongue piece pressurizeds that form by H shape slot to pressure circlet shape cavity direction, the damp channel area is strengthened and the restriction oil pressure, protection blower fan main shaft and synchronization link mechanism and damping buffering mechanism.

Wind wheel of the present invention is when static, and blade angle is in position, optimum start-up angle (between blade windward side and the wind wheel rotation card angle promptly facing the wind angle be about 12 ~ 15 °).After wind wheel begins rotation; Blade can overcome disc spring force along with the rising of rotating speed and outwards throw away (must throw away blower fan synchronously just can not vibrate) synchronously under action of centrifugal force; Because the effect of the spiral chute mechanism on the blade seat makes the rotation of three blade synchronization negative senses; The angle that facings the wind reduces (negative sense change oar) along with blade throws away gradually, become the optimum efficiency angle (being about 0 ~ 2 °) that facings the wind during to rated speed.When wind-force continue to become big, wind speed round continues to rise, when blade continues to overcome spring force and outwards moves; Spiral chute mechanism on the blade seat of the present invention makes blade forward rotate (forward become oar, blade facings the wind the angle change greatly, is beneficial to and reduces blade loads); When wind speed is increased to 25m/s; Blade facing the wind the angle can reach+20 ° ~+25 °, blade lift effect this moment disappears, rotating speed no longer rises.Damping buffering mechanism can effectively avoid vibration and the shake in the above-mentioned change oar process, and prolongs the life-span of blower fan.

With known passive paddle changing compared with techniques, the invention has the beneficial effects as follows:

1, can two-way change oar, not only can reduce to start wind speed but also when strong wind, forward become oar and realize the strong wind protection, be beneficial to the minimizing blade loads.

2, has reliable damping buffering device.

3, mechanism is succinct, and volume is little, long service life, and technology capability is good.

Description of drawings

Fig. 1 is plan view of the present invention (pressing B-B direction complete section among Fig. 2)

Fig. 2 for Fig. 1 cut open and open by A-A air guide sleeve right elevation.

Fig. 3 is the C-C sectional view of Fig. 1.

Fig. 4 is the D-D sectional view of Fig. 1.

Fig. 5 is the parts drawing of hub body.

Fig. 6 is the E-E cut-away view of Fig. 5.

Fig. 7 is the parts drawing of sliding sleeve.

Fig. 8 is the F-F cut-away view of Fig. 7.

Main shaft 1, hub body 2, cantilevered axle 3, sliding sleeve 4, blade 5, socket head screw 6, round nut 7, locking pad 8, fixed cover 9, Screw 10, air guide sleeve 11;

Big socket head screw 12, leader casing 13, dish spring 14, filler ring 15, ball 16 and lock screw 17;

Bearing pin 18, needle bearing 19, sleeve pipe 20, two-way spiral groove 21;

Connecting rod 22, pin 23, plain radial bearing 24, screw 25, large washer 26, pressure ring 27, Screw 28, Cock screw 29, synchronous flange 30;

Preceding supporting ring 31, back supporting ring 32, moving dividing plate 33, static baffle 34, seal ring 35, O shape circle 36, Cock screw 37,38, socket head screw 39, packing ring 40, air guide sleeve support 41.

Embodiment

Can find out that by Fig. 1 ~ 8 the present invention becomes the oar wind wheel automatically, form by wheel hub slider mechanism, dish spring mechanism, spiral chute mechanism, five mechanisms of synchronization link mechanism and damping buffering mechanism.

Said wheel hub slider mechanism is made up of main shaft 1, hub body 2, cantilevered axle 3, sliding sleeve 4, blade 5, socket head screw 6, round nut 7, locking pad 8, fixed cover 9 and Screw 10 and air guide sleeve 11, air guide sleeve support 41.In the middle of the hub body 2 is a tri-prismoid, is linked to be an integral body by 3, three cantilevered axle of protruding three cantilevered axle of three side planes of tri-prismoid 3 and hub body 2.Three sliding sleeves 4 are enclosed within respectively and both can have rotated also on three cantilevered axle 3 and can move axially; Three blades 5 are connected on three sliding sleeves 4 through a plurality of socket head screws 6; Two round nuts 7 are pressed on the hub body 2, and taper hole in the middle of the hub body 2 closely is connected with outer cone on the main shaft 1, and there is locking pad 8 two round nuts 7 centres.Fixed cover 9 covers on outside the sliding sleeve and the flange through the fixed cover end is fixed on the tri-prismoid side plane with Screw 10; It all covers sliding sleeve 3 afterbodys (stroke that the length of fixed cover 9 is outwards moved greater than sliding sleeve 4); Fixed cover 9 stops greases to leak, simultaneously since the gas of sliding sleeve 4 sliding sleeve 4 back annular spaces when moving fixed cover 9 in and on the cantilevered axle 3 can only pass in and out from the gap between fixed cover 9 and the sliding sleeve 4 and can produce damping function (being similar to inflator); Air guide sleeve 11 is fixed on the hub body 2 through air guide sleeve support 41.

There are three covers in said dish spring mechanism; Every cover dish spring mechanism be contained in said hub body 2 three cantilevered axle 3 and three sliding sleeves 4 the end and extend into the inside of blade 5 ends, form by big socket head screw 12, leader casing 13, dish spring 14, filler ring 15, ball 16 and lock screw 17.A plurality of balls 16 are contained in and form a thrust bearing between filler ring 15 and sliding sleeve 4 breech faces, and this thrust bearing still can rotate sliding sleeve 4 flexibly on the cantilevered axle 3 at hub body 2 under dish spring 14 compressive states; Leader casing 13 small ends have two boss; When big socket head screw 12 is pushed down leader casing 13; Boss stretch into terminal two of cantilevered axle 3 recessed poor in, leader casing 13 can not be rotated, the lock screw 17 on the leader casing 13 withstands big socket head screw 12 again, and that socket head screw 12 can not be rotated is loosening.

There are three covers in said spiral chute mechanism; Every cover spiral chute mechanism is by two bearing pins 18; Four needle bearings 19; The two-way spiral groove 21 (there are four two-way spiral grooves each sliding sleeve end) of sleeve pipe 20 and sliding sleeve 4 ends is formed (center line of two-way spiral groove 21 is the curves that satisfy the best two-way change oar function of blower fan); Two bearing pin 18 orthogonal cantilevered axle 3 afterbodys (position, a hole of staggering) that pass said hub body 2; The termination of bearing pin 18 is equipped with needle bearing and is extend in the two-way spiral groove 21 of sliding sleeve 4 ends BecauseTwo bearing pins 18 are fixed on the cantilevered axle 3 of hub body 2, and when sliding sleeve 4 moved axially, because the effect of the spiral chute 21 of sliding sleeve 4 ends, sliding sleeve 4 will be promoted rotation by bearing pin 18 and needle bearing 19.Sleeve pipe 20 wraps in outside the sliding sleeve 4 end cylindricals and all covers spiral chute mechanism, and it stops grease to leak, and makes needle bearing 19 and spiral chute 21 long-term works in lubricant oil.

Said synchronization link mechanism comprises three connecting rods 22, six roots of sensation pin 23, six plain radial bearings 24, six screws 25, six large washers 26, six pressure rings 27, Screw 28, Cock screw 29 and flange 30 synchronously; Six roots of sensation pin 23 has three to be installed on three sliding sleeves 4, and is locking with three Cock screws 29; There are three to be installed on the synchronous flange 30; Same locking with three Cock screws 29; Every connecting rod 22 1 ends are enclosed within on the sliding sleeve 3 through plain radial bearing 24; The other end is enclosed within on the synchronous flange 30 through plain radial bearing 24, makes plain radial bearing 24 location with screw 25, large washer 26, pressure ring 27 and Screw 28.Because flange 30 can only be that rotate at the center with main shaft 1 synchronously, such three sliding sleeves 3 are synchronized flange 30 and pin and can only be synchronized with the movement within the specific limits through connecting rod 22.

Said damping buffering mechanism is made up of preceding supporting ring 31, back supporting ring 32, two moving dividing plates 33, static baffle 34, seal ring 35, two O shape circles 36, Cock screw 37,38, socket head screw 39 and packing rings 40.Preceding supporting ring 31 makes synchronous flange 30 main shaft 1 upper limit (can only rotate) with back supporting ring 32 on the one hand, encloses 36 through the O shape in the middle of the forward and backward supporting ring endoporus on the other hand and seals; Static baffle 34 passes from the elongated slot of main shaft 1 and is divided into two halves to annular space; Two moving dividing plates 33 are fixed in synchronous flange 30 inner chambers and rotate together in company with footwork blue 30, and the moving dividing plate 33 of each piece is divided into two little annular spaces to the annular space that static baffle 34 is divided into two halves more again.When synchronous flange 30 rotates, will drive two moving dividing plates 33 and rotate,

Because the grease in two little annular spaces that the moving dividing plate 33 of each piece separates can only flow to another little annular space from a little annular space through the damping hole on the moving dividing plate 33 of moving each piece, thereby makes the rotation of synchronous flange 30 realize damping buffering.Moving dividing plate 33 is made by spring steel plate, middlely cuts out a H shape by line, and damping hole just is drilled in the centermost of H; When high-voltage oil cavity pressure is excessive, can be crooked behind the two ㄩ shape tongue piece pressurizeds that form by H shape slot to pressure circlet shape cavity direction, the damp channel area is strengthened and the restriction oil pressure, protection blower fan main shaft and synchronization link mechanism and damping buffering mechanism.

Claims

1. one kind becomes the oar wind wheel automatically, it is characterized in that said wind wheel comprises totally five mechanisms of wheel hub slider mechanism, dish spring mechanism, spiral chute mechanism, synchronization link mechanism and damping buffering mechanism;

Said wheel hub slider mechanism; Comprise main shaft (1), hub body (2), cantilevered axle (3), sliding sleeve (4), blade (5), fixed cover (9) and round nut (7); In the middle of the hub body (2) is a tri-prismoid; Protruding three cantilevered axle of three side planes (3) by tri-prismoid; Three cantilevered axle (3) are linked to be an integral body with hub body (2), and three sliding sleeves (4) are enclosed within respectively and both can have rotated also on three cantilevered axle (3) and can move axially, and three blades (5) are connected on three sliding sleeves (4); Round nut (7) is pressed on the hub body (2); Taper hole in the middle of the hub body (2) closely is connected with outer cone on the main shaft (1), and fixed cover (9) covers on outside the sliding sleeve and the flange through the fixed cover end is fixed on the tri-prismoid side plane stroke that the length of fixed cover (9) is outwards moved greater than sliding sleeve (4);

There are three covers in said dish spring mechanism; Every cover dish spring mechanism be contained in said hub body (2) three cantilevered axle (3) and three sliding sleeves (4) the end and extend into the inside of blade (5); Every cover dish spring mechanism comprises big socket head screw (12), leader casing (13), dish spring (14), filler ring (15), ball (16) and lock screw (17); A plurality of balls (16) are contained in and form a thrust bearing between filler ring (15) and sliding sleeve (4) breech face; This thrust bearing still can be gone up flexibly sliding sleeve (4) in the cantilevered axle (3) of hub body (2) and is rotated under dish spring (14) impaction state; Leader casing (13) small end has two boss, and when big socket head screw (12) was pushed down leader casing (13), two boss stretched in two terminal recessed being pickled with grains or in wine of cantilevered axle (3); Leader casing (13) can not be rotated, and the lock screw (17) on the leader casing (13) withstands big socket head screw (12) again makes socket head screw (12) can not rotate loosening;

There are three covers in said spiral chute mechanism; Every cover spiral chute mechanism comprises the two-way spiral groove (21) of two bearing pins (18), four needle bearings (19), sleeve pipe (20) and sliding sleeve (4) end; There are four two-way spiral grooves each sliding sleeve end; The center line of two-way spiral groove (21) is to satisfy the best curve that becomes the oar function of blower fan; Orthogonal cantilevered axle (3) afterbody that passes said hub body (2) of two bearing pins (18), the termination of bearing pin (18) extend in the two-way spiral groove (21) of sliding sleeve (4) end, because the cantilevered axle (3) of two bearing pins (18) in hub body (2) goes up fixed; When sliding sleeve (4) when moving axially; Because the effect of the spiral chute (21) of sliding sleeve (4) end, sliding sleeve (4) will be promoted rotation by bearing pin (18) and needle bearing (19), and sleeve pipe (20) wraps in outside the cylindrical of sliding sleeve (4) end and all covers spiral chute mechanism;

Said synchronization link mechanism comprises three connecting rods (22), six roots of sensation pin (23), six plain radial bearings (24), six screws (25), six large washers (26), six pressure rings (27), Screw (28), Cock screw (29) and synchronous flange (30); Six roots of sensation pin (23) has three to be installed on three sliding sleeves (4), and is locking with three Cock screws (29); There are three to be installed on the synchronous flange (30); Same locking with three Cock screws (29); Every connecting rod (22) one ends are enclosed within on the sliding sleeve (3) through plain radial bearing (24); The other end is enclosed within on the synchronous flange (30) through plain radial bearing (24), makes plain radial bearing (24) location with screw (25), large washer (26), pressure ring (27) and Screw (28);

Said damping buffering mechanism comprises preceding supporting ring (31), back supporting ring (32), two moving dividing plates (33) and a static baffle (34); Preceding supporting ring (31) and back supporting ring (32) make synchronous flange (30) can only rotate at main shaft (1) upper limit on the one hand; Seal through the circle of the O shape in the middle of the forward and backward supporting ring endoporus (36) on the other hand; Static baffle (34) passes from the elongated slot of main shaft (1) and is divided into two halves to annular space; Two moving dividing plates (33) are fixed in synchronous flange (30) inner chamber and rotate together in company with footwork blue (30); Each piece moves dividing plate (33) and is divided into two little annular spaces to the annular space that static baffle (34) is divided into two halves more again; When synchronous flange (30) rotates, will drive two moving dividing plates (33) and rotate, the grease that each piece move in two little annular spaces that dividing plate (33) separates can only flow to another little annular space from a little annular space through the damping hole that each piece moves on the dividing plate (33).

2. a kind of automatic change oar wind wheel according to claim 1 is characterized in that said moving dividing plate (33) made by spring steel plate, and the centre cuts out a H shape, and damping hole just is drilled in the centermost of H.

3. a kind of automatic change oar wind wheel according to claim 1 is characterized in that said round nut (7) has two, and locking pad (8) is arranged in the middle of two round nuts (7).