CN103047179B - The outer Primary regulation device of axial-flow fan blade angle machine - Google Patents
The outer Primary regulation device of axial-flow fan blade angle machine Download PDFInfo
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- CN103047179B CN103047179B CN201210552196.6A CN201210552196A CN103047179B CN 103047179 B CN103047179 B CN 103047179B CN 201210552196 A CN201210552196 A CN 201210552196A CN 103047179 B CN103047179 B CN 103047179B
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Abstract
The outer Primary regulation device of a kind of axial-flow fan blade angle machine.It mainly solves large, the existing controlling device complex structure of existing axial-flow fan blade angular adjustment difficulty and high in cost of production technical problem, and technological points of the present invention is: it is made up of Worm gear case (8), connecting rod (12), bearing pin (14), pushing disk (18), driven disc (27), wheel hub (19), regulating handle (20) etc.It has and is skillfully constructed, novel structure, low cost of manufacture, regulates and quick and precisely facilitates, the features such as reliable operation.It is mainly applied on big-and-middle-sized propeller fan, do not need to dismantle Blower Housing, outward just can the angle of adjusting vane (2) by regulating handle (20) and driving mechanism at machine, thus reach change fan performance value, adapt to the object of different working condition requirement.
Description
Technical field
The present invention relates to a kind of controlling device, particularly a kind of blade control device for axial-flow blower.
Background technique
Propeller fan is large because having flow, and volume is little, the feature that pressure head is low, is widely used in the ventilation system of large discharge in various needs.By multistage-combination, improve pressure, and be applied to the ventilation system of mine, then more general.In mine ventilation, due to the continuous extension in tunnel and the continuous increase of driving face, working condition constantly changes, and this just requires that the performance number of axial-flow blower constantly adapts to this working condition.Change the performance number of blower fan, way the most basic at present has two kinds, and one is the rotating speed being changed blower fan by frequency control of motor speed, and two is angles of adjusting vane, suitably changes flow and the pressure of blower fan.A kind of comparatively large because investing above, seldom adopt.At present, most mining axial blowers is all adopt the way of adjusting vane angle to change performance number.
Adjusting vane angle has dynamic and static state two kinds of forms.What is called is exactly dynamically that blower fan regulates in running.The mechanism of this regulative mode is more complicated, and fabricating cost is very high, applies less.So-called Static adjust is at blower fan static time, is regulated by a series of mechanism manual.Static adjust has individual blade to regulate one by one and all blade integrals regulate (i.e. Primary regulation) two kinds of modes of operation.Individual blade regulates one by one, casing is needed to disintegrate, or blower fan is dragged away from mounting point, to loosen blade fixing device, lock after angle of swing one by one again, and return to original mounting point, the labor intensity of this regulative mode operator is large, operating time is also long, and the angular error that individual blade regulates is also larger.Primary regulation device again can in extension set and the outer two kinds of different structure modes of machine, Primary regulation device in machine, although do not need blade one by one to regulate respectively, degree of regulation also increases, still blower fan to be disintegrated or drag mounting point away from.During current adjustment fan blade, do not dismantle Blower Housing and blade, blower fan disintegration or mobile position can not realized the equipment that outside machine, disposable adjustment puts in place and yet there are no maturation yet, because realize this purpose, its structural design is very complicated, and manufacture cost is high, functional reliability is also difficult to reach, therefore has no and apply.
Summary of the invention
For the series of problems that existing axial-flow blower exists in adjustment of blade angle process, the object of this invention is to provide that a kind of structure is relatively simple and operation is reliable, can not dismantle Blower Housing and blade, also do not need blower fan to disintegrate or mobile position, Primary regulation device outside the axial-flow fan blade angle machine that just can change fan blade at machine outward.
The technical solution adopted for the present invention to solve the technical problems is: it comprises Worm gear case 8, connecting rod 12, pushing disk 18, pushing disk 27, wheel hub 19, regulating handle 20, wheel hub 11, reel 5; The Worm gear case 8 of the parts such as worm gear 24, worm screw 25 is installed, is bolted on impeller former; The internal thread of worm gear 24 axis hole, coordinates with the pushing disk 18 of external thread structure; The disk surrounding of pushing disk 18 one end is welded with several axle sleeves corresponding with blade 2 quantity, and one end bearing pin 14 of connecting rod 12 is hinged on axle sleeve; The other end of connecting rod 12 and blade 2 petiole afterbody, fixed by key pin; At machine external application handle 20 rotary worm 25, by the driving mechanism transmission campaign of device, blade 2 petiole is rotated.The geometrical center of described worm gear 24 and Worm gear case 8 overlaps with the geometrical center of wheel hub 19; Also overlap with the geometrical center of pushing disk 18.Worm gear 24 is supported by two sliding bearings 23, and one of them sliding bearing is arranged on Worm gear case 8, and another sliding bearing is arranged on Worm gear case cover plate 22, and Worm gear case cover plate 22 to be coordinated with Worm gear case 8 by flange locates.Also multiple through hole can be had on pushing disk 18, and corresponding with the installation otic placode quantity on Worm gear case 8.
Pushing disk 18 side of the present invention is outside thread axle sleeve, and opposite side is disc structure, disk has several be fixedly connected with the screw of pin; Be clearance sliding fit between reel on pushing disk 18 endoporus and wheel hub 19, feather key 7 is fixed on reel, and pushing disk is along feather key 7 moving linearly; Pushing disk 18 disc-shaped structure end surrounding is welded with several axle sleeves corresponding with blade 2 quantity, each axle sleeve center line and corresponding petiole centerline hole parallel to an axis, but has certain distance L at axial plane, has certain distance B in radial direction.
Described worm screw 25 two ends are square head structures, coordinate with the inside square toes of regulating handle 20 one end; Be tube-in-tube structure outside the bearing gland 30 at worm screw 25 two ends, coordinate with the outer circle column cap of regulating handle 20.
Worm screw 25 of the present invention forms a transmission with worm gear 24, and worm gear 24 endoporus is internal thread, matches with outside thread on pushing disk 18, forms a power screw pair; Worm gear 24, in two transmissions, is driving link, is again driven member.
The present invention also can enclose on 1 at cylinder and have hand hole, and has hand hole cover plate 26, is screwed on cylindrical shell; On cylinder circle, also symmetry has two holes be convenient to regulating handle 20 and inserted, and two centerline holes and worm screw 25 center line are at grade.
The bearing pin 14 that the present invention is fixed on pushing disk 18 periphery axle sleeve is socket cap with axle sleeve mating part, be square or oblate with connecting rod 12 mating part, the part that petiole is connected with connecting rod 12 is be with the cylindrical hole of opening, employing sliding bearing between the petiole of each blade 2 and petiole seat, petiole axle head round nut is fixed.
Pushing disk 18 of the present invention also can design mix body structure, and pushing disk 18 and Worm gear case 8 homonymy, driven disc 27 is arranged in the opposite side of former, connects between pushing disk 18 with driven disc 27 with connecting pin 28 and nut 29
The invention has the beneficial effects as follows: be applied on big-and-middle-sized axial-flow blower, when impeller state of rest, do not need dismounting Blower Housing and blade, do not need blower fan to disintegrate or mobile position yet, by the handle outside machine, rotate inner driving mechanism, vaned angle is regulated simultaneously, thus change the performance number of blower fan, the needs of adaptation condition condition change, and it is quick and easy, accurate to reach adjustment, reduce the labor intensity regulated, save the object of operating time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the dextrad A-A sectional structure schematic diagram of Fig. 1.
Fig. 3 is the left-hand B-B sectional structure schematic diagram of Fig. 1.
Fig. 4 is Fig. 1 " I " place structure for amplifying schematic diagram.
Fig. 5 is Fig. 1 " II " place structure for amplifying schematic diagram.
Fig. 6 is the forward structure schematic diagram of connecting rod 12.
Fig. 7 is the plan structure schematic diagram of Fig. 6.
Fig. 8 is the forward structure schematic diagram of pushing disk 18.
Fig. 9 is that A-A sectional structure schematic diagram is looked on a left side of Fig. 8.
Figure 10 is the F-F sectional structure schematic diagram from Worm gear case parts.
Figure 11 is that Figure 10 " E-E " is to sectional structure schematic diagram.
Figure 12 is the forward appearance schematic diagram of Worm gear case 8.
Figure 13 is that Figure 12 " C " is to structural representation.
Figure 14 is the cross-sectional view of Figure 12.
Figure 15 is Figure 14 " D-D " generalized section.
Figure 16 is the schematic diagram that pushing disk adopts Split type structure.
In figure: 1-cylinder circle, 2-blade, 3-copper sheathing (), 4-round nut, 5-back-up ring (), 6-floor clip, 7-feather key, 8-Worm gear case, 9-bolt, 10-front shroud, 11-back shroud, 12-connecting rod, 13-shaft end ring, 14-bearing pin, 15-copper sheathing (two), 16-back-up ring (two), 17-round nut, 18-pushing disk, 19-wheel hub, 20-regulating handle, 21-dial, 22-Worm gear case cover plate, 23-copper sheathing, 24-worm gear, 25-worm screw, 26-hand hole cover plate, 27-driven disc, 28-connecting pin, 29-nut, 30-bearing gland.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.
Embodiment 1, the present invention includes Worm gear case 8, connecting rod 12, pushing disk 18, pushing disk 27, wheel hub 19, regulating handle 20, wheel hub 11 and reel 5; The incomplete formula cylinder base plate structure of the Worm gear case 8 of the parts such as worm gear 24, worm screw 25 is installed, is fixed on impeller former by bolt assembly; The two end part of worm screw 25 are cross sections is square structure, and matches with the inside square toes of regulating handle 20; The internal thread of worm gear 24 axis hole, coordinates with the pushing disk 18 of external thread structure; The disk surrounding of pushing disk 18 one end is welded with several axle sleeves corresponding with blade 2 quantity, and one end bearing pin 14 of connecting rod 12 is hinged on axle sleeve; The other end of connecting rod 12 and blade 2 petiole afterbody, fixed by key pin.When needing the angle of adjusting vane 2, inserting on the square toes of controlling device worm screw 25 end, rotary worm 25 with regulating handle 20, driving worm gear 24 to rotate, worm gear 24, as the driving link of power screw, drives again pushing disk 18 to produce and moves axially.Pushing disk 18 Upper shaft sleeve and bearing pin 14 will make connecting rod 12 produce swing, and because connecting rod 12 and petiole are fixedly connected with, petiole can rotate because the swing of connecting rod 12 produces, thus reach the object of adjusting vane angle.Consult Fig. 1 to Figure 15.
Embodiment 2, Worm gear case 8 body is installed the structure of worm screw 25 and two axle heads of worm screw 25, symmetrical relative to the center line of worm gear 8, for reducing weight that worm screw 25 and mounting structure increase to the dynamically balanced impact of vane rotary, Worm gear case 8 body centrally can be made laterally zygomorphic structure.But, only processing wherein a pair for installing the structure division of worm screw 25.Worm screw 25 adopts tapered roller bearing to be bearing on casing, and bearing gland 30 is outside, is designed to tube-in-tube structure, protects on the one hand to the end of worm screw 25, is conducive to the insertion of regulating handle 20 on the other hand.Consult Fig. 1 to Figure 15, all the other are with embodiment 1.
Embodiment 3, and the geometrical center of worm gear 24 and Worm gear case 8 overlaps with the geometrical center of wheel hub 19; Also overlap with the geometrical center of pushing disk 18.Worm gear 24 is supported by two sliding bearings 23, and one of them sliding bearing is arranged on Worm gear case 8, and another sliding bearing is arranged on Worm gear case cover plate 22, and Worm gear case cover plate 22 to be coordinated with Worm gear case 8 by flange locates; Consult Fig. 1 to Figure 15, all the other are with embodiment 1.
Embodiment 4, and worm screw 25 and worm gear 24 form a transmission, and worm gear 24 endoporus is internal thread, matches with outside thread on pushing disk 18, forms a power screw pair; Worm gear 24, in two transmissions, is driving link, is again driven member.Consult Fig. 1 to Figure 15, all the other are with embodiment 1.
Embodiment 5, and pushing disk 18 side is outside thread axle sleeve, and opposite side is stair-stepping disc structure, are designed to step structure and in card, have several auxiliary holes, are to avoid the rivet of integrated disc portions and reel and fixing reel or screw to interference.Disk has several be fixedly connected with the screw of pin, disk end face has several and the corresponding through hole of installation otic placode quantity on Worm gear case 8, the installation otic placode being convenient to worm gear case passes and is fixed on the former of wheel hub.Be clearance sliding fit between reel on pushing disk 18 endoporus and wheel hub 19, feather key 7 is fixed on reel, ensures that pushing disk 18 can only produce along reel and move axially; Pushing disk 18 disc-shaped structure end surrounding is welded with several axle sleeves corresponding with blade 2 quantity, each axle sleeve center line and corresponding petiole centerline hole parallel to an axis, but have certain distance L at axial plane, have certain distance B in radial direction, distance B changes with moving axially of pushing disk.Each axle sleeve on pushing disk 18 fixes a bearing pin 14 with nut, and one end that bearing pin 14 coordinates with axle sleeve is round column structure, forms rotating Spielpassung by copper sheathing 15, and the other end is semicircle flat structure, and coordinates with flat waist shaped hole on connecting rod 12.Consult Fig. 1 to Figure 15, all the other are with embodiment 1.
Embodiment 6, for ensureing that petiole rotates freely in petiole seat, adopt sliding bearing 3 between petiole and petiole seat.Petiole end adopts back-up ring 13 and bolt restrictive axial to move.Consult Fig. 1 to Figure 15, all the other same above-described embodiments.
Embodiment 7, cylinder circle 1 has hand hole, and have hand hole cover plate 26, be screwed on cylindrical shell, when needing adjusting vane, open hand hole, manually spiral vane rotary, make the handle hole central alignment on the longitudinal center line of worm screw 25 and cylinder circle 1, when not regulating, hand hole cover plate 26 is screwed and prevents hand hole from leaking out on cylinder circle; On cylinder circle, also symmetry has two holes be convenient to regulating handle 20 and inserted, two centerline holes and worm screw 25 center line at grade, and are welded with supporting sleeve in hole, are furnished with screw plug outside supporting sleeve, when not carrying out regulating, plug can prevent from leaking out in supporting sleeve and hole.Consult Fig. 1 to Figure 15, all the other same above-described embodiments.
Embodiment 8, devise front shroud 10, back shroud 11 in the front end and back end of impeller, ensure that the driving mechanism of impeller is not by the impact of contained dust and other harmful substance in gas in runner.Consult Fig. 1 to Figure 15, all the other same above-described embodiments.
Embodiment 9, under normal circumstances, use a regulating handle 20 just can complete adjustment work in a direction, when blade quantity is more, when having jam phenomenon accidentally to occur between petiole and petiole seat, can to exert a force with multiple handle at different direction simultaneously carry out regulating (at most can four people operate) simultaneously, thus alleviate the labor intensity of operator.Consult Fig. 1 to Figure 15, all the other are with embodiment 1.
Embodiment 10, Figure 16 is embodiment pushing disk 18 being manufactured Split type structure, and pushing disk 18 is arranged in and worm gear case 8 former side in the same way.Driven disc 27 is arranged in the opposite side of former.Between pushing disk 18 with driven disc 27 with connecting pin 28 and nut 29 affixed become an entirety.Consult Fig. 1 to Figure 15, all the other same above-described embodiments.
Embodiment 11, and the present invention stretches in machine in controlling device by adopting regulating handle 20 from machine, rotates regulating handle 20 and just once can adjust whole blade 2 angle, and do not need to disassemble casing and blade 2.Meanwhile, by designing manual transmission worm gear 20 worm screw 25 driving mechanism, Worm gear case 8 body is fixed on the former of wheel hub, and, make geometrical center and the impeller shaft hole center superposition of Worm gear case 8, worm gear 20 is bearing on casing by copper sheathing 23, and can rotate around copper sheathing 23.Worm gear 20 bore design becomes female thread structure, is meshed with the outside thread on pushing disk 18, composition screw-drive mechanism.The endoporus of pushing disk 18 is sleeved on again on the reel of wheel hub 19, and, slid axially along reel by feather key 7.The circumferencial direction of the integrated disc portions of pushing disk 18, arrange several axle sleeves equal with blade 2 quantity, axle sleeve center line is parallel in the axial direction with petiole center line, but not at grade, and have certain distance.Each axle sleeve is fixed a bearing pin 14, and bearing pin 14 one end coordinates with copper sheathing (two) 15 with between axle sleeve, and with back-up ring 16 and nut 17 and fixing, and bearing pin 14 the other end and connecting rod 12 form be slidably matched hinged.Connecting rod 12 the other end is fixedly connected with petiole afterbody clamp band type, and petiole and petiole seat adopt copper sheathing 3 to form Spielpassung in radial direction, thus ensures that petiole is free to rotate, and petiole end back-up ring 13 and bolt are fixed.Consult Fig. 1 to Figure 15, all the other same above-described embodiments.
Embodiment 12, and worm screw 25 is fixed on casing by bearing and bearing gland 30, forms transmission with worm gear 20, and gland 30 partial design squarely structure is stretched out at worm screw 25 two ends.Bearing gland 30 outside is designed to form of sleeve, protects and be conducive to regulating handle 20 importing to worm screw 25 axle head.On flow blower casing cylinder circle 1, have two holes be convenient to regulating handle 20 and inserted, and weld handle supporting cover, the longitudinal center line of supporting sleeve and worm screw 25 center line in same level, and are formed symmetrical relative to impeller central line.Housing also has hand hole simultaneously, opens hand hole cover plate 26 manual rotation impeller, make center and worm screw 25 central alignment of handle hole and supporting sleeve.Insert on the square toes of worm screw 25 end with regulating handle 20 through supporting sleeve, handle with sleeve, drive worm gear 20 to rotate, and then drive pushing disk 18 to do axial motion along reel.The axle sleeve of pushing disk 18 circumferencial direction and bearing pin 14 will make connecting rod 12 swing.During connecting rod swing, the petiole of blade 2 is pulled and produces rotation, thus change blade 2 angle.Action due to all connecting rods 12 is all consistent, and on impeller, the angle of swing of all blades 2 is completely the same, and disposablely completes.Because, worm screw 25 two ends can adjustment in use handle 20, two people's cooperating simultaneously, regulate lighter.On handle supporting cover, dial 21 is installed, according to the rotatable handle number of turns, the angular dimension of adjustment can have been calculated.After blade 2 angle adjustment, take out regulating handle 20, be tightened on supporting sleeve with plug, meanwhile, build hand hole cover plate 26, ensure the sealing of housing.In impeller, outside front shroud 10 and back shroud 11 protect, and avoid whole mechanism to be subject to the impact of dust and other harmful substance carried secretly in gas in blower fan runner.Consult Fig. 1 to Figure 15, all the other same above-described embodiments.
The present invention compares with the regulative mode of existing various structure, has following characteristics and advantages:
1, novel, structure is simple.In the technical program, worm gear 24 bore design is become internal thread, match with the outside thread of pushing disk 18, realize the combination of worm gear 24 worm screw 25 transmission and power screw, the fitting seat of Worm gear case is designed to otic placode structure, meanwhile, the disk of pushing disk 18 has the through hole consistent with Worm gear case otic placode quantity, being convenient to otic placode is arranged on wheel hub disc through through hole, also avoids producing with the pushing disk moved left and right interfering.The innovative point that whole device is many, makes the technical program have certain novelty.But, the structure of whole device, and uncomplicated, no matter be manufacture, install, safeguard all very convenient.
2, reduce the labor intensity of operator during adjustment work, reduce and regulate the operating time.Present controlling device, all will disintegrate casing, or drags unit entirety away from mounting point, just can carry out, sometimes employ hoisting apparatus in addition.Individual blade 2 regulates the fixing bolt of the blade 2 that also needs to loosen one by one, and workload is quite large, usually needs the time of more than one day just can complete the adjustment work of an impeller.Adopt the adjustment assembling device of the technical program, only need a few minutes just can complete the adjustment of whole blade 2 like a cork.Due to, in the technical program, consider multiple operator and use handle force at different direction simultaneously, can four people carry out at most simultaneously,, there is jam phenomenon even if occasionally have between the petiole of blade and petiole seat, regulate work light too in the large-scale impeller many to blade 2 quantity.
3, easy to adjust, angle is accurate.When individual blade regulates one by one, always there is certain error in the angle of blade.In addition, regulate comparatively large, less than forced situation, nobody is ready to do this work.Adopt the controlling device of the technical program, vaned angle be all consistent, degree of accuracy is higher.
4, operational reliability is high.Adjusting vane 2 angle, worm screw 25 must be driven to rotate by regulating handle 20, the a series of transmissions such as pushing disk realization moves axially, connecting rod 12 produces swing, petiole generation rotation can be made, due to, worm gear 24 worm screw 25 transmission and power screw all have self-locking property, blade is after adjusting to a certain angle, and the relative position of all mechanisms will remain unchanged.Be in operation, because of vane stress, can not produce reverse transmission, the angle regulated also would not change.Thus ensure that the operational reliability of blower fan.
5, low cost of manufacture, use value is high.In order to realize the outer Primary regulation of blade angle machine, many technician in industry, painstakingly, devise the device that some are feasible, but manufacture cost are outrageously high.Just because of this, user does not generally require supporting this device, limits application and the popularization of this mechanism.Adopt the technical program, overall manufacture cost is lower, and user is ready to accept, and has good use value.
Claims (9)
1. the outer Primary regulation device of axial-flow fan blade angle machine, is characterized in that: it comprises Worm gear case (8), connecting rod (12), pushing disk (18), wheel hub (19), regulating handle (20), reel (5); Being provided with the Worm gear case (8) comprising worm gear (24) and worm screw (25) is fixed on impeller former; The internal thread of worm gear (24) axis hole, coordinates with the pushing disk (18) of external thread structure; The disk surrounding of pushing disk (18) one end is welded with more than 1 axle sleeve corresponding with blade (2) quantity, and one end bearing pin (14) of connecting rod (12) is hinged on axle sleeve; The other end of connecting rod (12) and blade (2) petiole afterbody, fixed by key pin; At regulating handle (20) rotary worm (25), by the driving mechanism transmission campaign of device, blade (2) petiole is rotated, pushing disk (18) side is outside thread axle sleeve, opposite side is stepped disc structure, be designed to step structure and have auxiliary hole in card, avoiding the rivet of integrated disc portions and reel (5) and fixing reel (5) or screw to interference, disk has several be fixedly connected with the screw of pin; Be clearance sliding fit between reel (5) on pushing disk (18) endoporus and wheel hub (19), feather key (7) is fixed on reel (5), and pushing disk is along feather key (7) moving linearly; Pushing disk (18) disc-shaped structure end surrounding is welded with the axle sleeve corresponding with blade (2) quantity, each axle sleeve center line and corresponding petiole centerline hole parallel to an axis, but has certain distance at axial plane, has certain distance in radial direction.
2. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, is characterized in that: the geometrical center of worm gear (24) and Worm gear case (8) overlaps with the geometrical center of wheel hub (19); Also overlap with the geometrical center of pushing disk (18).
3. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, it is characterized in that: worm gear (24) is supported by two sliding bearings (23), one of them sliding bearing is arranged on Worm gear case (8), another sliding bearing is arranged on Worm gear case cover plate (22), and Worm gear case cover plate (22) to be coordinated with Worm gear case (8) by flange locates.
4. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, is characterized in that: (18) have multiple through hole to pushing disk, and corresponding with the installation otic placode quantity on Worm gear case (8).
5. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, is characterized in that: worm screw (25) two ends are square head structures, coordinates with the inside square toes of regulating handle (20) one end; Bearing gland (30) outside at worm screw (25) two ends is tube-in-tube structure, coordinates with the outer circle column cap of regulating handle (20).
6. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, it is characterized in that: worm screw (25) and worm gear (24) form a transmission, worm gear (24) endoporus is internal thread, matches, form a power screw pair with the upper outside thread of pushing disk (18); Worm gear (24), in two transmissions, is driving link, is again driven member.
7. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, is characterized in that: on cylinder circle (1), have hand hole, and has hand hole cover plate (26), be screwed on cylindrical shell; On cylinder circle, also symmetry has two holes be convenient to regulating handle (20) and inserted, and two centerline holes and worm screw (25) center line are at grade.
8. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, it is characterized in that: be fixed on the bearing pin (14) on pushing disk (18) periphery axle sleeve, be socket cap with axle sleeve mating part, be square or oblate with connecting rod (12) mating part, the part that petiole is connected with connecting rod (12) is be with the cylindrical hole of opening, employing sliding bearing between the petiole of each blade (2) and petiole seat, petiole axle head round nut is fixed.
9. the outer Primary regulation device of axial-flow fan blade angle machine according to claim 1, it is characterized in that: pushing disk (18) is Split type structure, pushing disk (18) and Worm gear case (8) homonymy, driven disc (27) is arranged in the opposite side of former, connects between pushing disk (18) with driven disc (27) with connecting pin (28) and nut (29).
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| CN201210552196.6A CN103047179B (en) | 2012-12-19 | 2012-12-19 | The outer Primary regulation device of axial-flow fan blade angle machine |
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| CN201210552196.6A CN103047179B (en) | 2012-12-19 | 2012-12-19 | The outer Primary regulation device of axial-flow fan blade angle machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104329281B (en) * | 2014-10-20 | 2017-06-13 | 东方日立(成都)电控设备有限公司 | A kind of adjusting rotor blade formula air-introduced machine frequency conversion energy-saving system |
| CN107061362B (en) * | 2017-01-16 | 2019-08-09 | 太原理工大学 | A kind of disrotatory axial flow fan |
| CN110500319A (en) * | 2019-09-18 | 2019-11-26 | 平安电气股份有限公司 | Primary integrally-regulated device outside axial-flow fan blade angle machine |
| CN112086887B (en) * | 2020-09-09 | 2022-04-15 | 贵州电网有限责任公司 | Adjustable ventilation device |
| CN116972015A (en) * | 2023-08-01 | 2023-10-31 | 淄博金河风机有限公司 | Axial flow fan capable of automatically adjusting blade angle |
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| CN1982728A (en) * | 2005-12-15 | 2007-06-20 | Tlt-涡轮有限公司 | Axial flow fan with adjustable blades and method for assembling the blade |
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| CN103047179A (en) | 2013-04-17 |
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