CN202510401U - Hand-cranking braking device for rotating shaft of large-scale induced draft fan - Google Patents
Hand-cranking braking device for rotating shaft of large-scale induced draft fan Download PDFInfo
- Publication number
- CN202510401U CN202510401U CN2012201003484U CN201220100348U CN202510401U CN 202510401 U CN202510401 U CN 202510401U CN 2012201003484 U CN2012201003484 U CN 2012201003484U CN 201220100348 U CN201220100348 U CN 201220100348U CN 202510401 U CN202510401 U CN 202510401U
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- Prior art keywords
- rotating shaft
- draught fan
- induced draught
- hand
- lead screw
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- Expired - Lifetime
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- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of large-scale induced draft fans and particularly relates to a hand-cranking braking device for a rotating shaft of a large-scale induced draft fan. The hand-cranking braking device consists of a bottom plate which is arranged under the rotating shaft of the induced draft fan and is fixedly connected with an induced draft fan table plate, a guide rail which is arranged on the upper surface of the bottom plate, two supports which are arranged on two sides of the bottom plate respectively, a trapezoidal threaded lead screw of which two ends are respectively connected with the two supports in a movable mode, a movable band-type brake body which is meshed with the trapezoidal threaded lead screw and is connected with the guide rail in a sliding mode, and a hand-cracking wheel which is fixedly connected with one end of the trapezoidal threaded lead screw. By the hand-cranking braking device, the rotating shaft of the induced draft fan can be braked effectively and reliably, convenience is provided for on-site maintenance personnel, and safety accidents can be avoided.
Description
Technical field
The utility model belongs to the induced draught fan equipment technical field, relates in particular to a kind of hand braking device of rotating shaft of large-scale induced draught fan.
Background technique
The Y4-73-no18d induced draught fan is the 75 tons of boiler accessory machineries in power station, and because of the suction inlet of induced draught fan is to draw flue gas in the burner hearth, 120 meters chimney stacks are directly sent in outlet.Shut down maintenance or normal when subsequent use when blowing out, induced draught fan is because of receiving the huge draft of 120 meters chimneys, and wind wheel has the rotation of per minute 30 commentaries on classics all the time.Though be provided with five air doors at exhaust pass in the design, receive the restriction of five throttle structures still can not control the rotation of induced draught fan.
The rotation of this induced draught fan just; Maintenance is made troubles to induced draught fan; Such as to the inspection of induced draught fan wind wheel wearing and tearing or handle dynamically balanced work etc. and all must under induced draught fan wind wheel state of rest, carry out; At present on-the-spot when induced draught fan overhaul usually with a diameter 100-120 millimeter, be about 3000 millimeter rods, one end insertion rotating shaft diaxon bearing middle lower portion also, the other end is sling with chain hoist, the frictional force through rod and rotating shaft makes the rotating shaft stall.Though this method can satisfy service work, consume great amount of manpower and material resources, and have very big danger in the operating process.
Summary of the invention
The purpose of the utility model is to provide a kind of hand braking device of rotating shaft of simple in structure, easy to operate, a kind of large-scale induced draught fan that braking ability is stable.
The purpose of the utility model realizes through following technical proposals:
The hand braking device of the rotating shaft of the large-scale induced draught fan of the utility model; It is characterized in that by the base plate that is located at induced draught fan rotating shaft below and is fixedly connected with the induced draught fan platen; Be located at the guide rail of this plate upper surface; Be located at two bearings of said base plate both sides respectively; Two end part are two trapezoidal threaded lead screw that bearing is rotationally connected therewith respectively, the trapezoidal threaded lead screw mobile band-type brake body that is meshed and is slidingly connected with said guide rail therewith, therewith a termination of trapezoidal threaded lead screw be fixedly connected hand take turns form.
Described mobile band-type brake body is made up of the circular arc friction plate that slide block is fixedly connected with slide block therewith; The bottom of said slide block and described guide rail are slidingly connected; The middle part of said slide block is provided with the trapezoidal thread through hole that is connected with a joggle with said trapezoidal threaded lead screw; The top of said slide block is provided with semi-circular recesses; This semi-circular recesses surface is fixedly connected with the outer surface of said circular arc friction plate, and the interior surface curvature radius of this circular arc friction plate and the center of circle are all consistent with the radius of curvature and the center of circle of the rotating shaft outer surface of said induced draught fan.
The method for using of the utility model:
When needs overhauled large-scale induced draught fan and require the rotating shaft transfixion of induced draught fan, manual operation is hand to be taken turns, and drove the trapezoidal thread screw mandrel and rotated, and moved the band-type brake body and moved along the rotor shaft direction of guide rail to induced draught fan thereby make, until with firmly locking of rotating shaft.After maintenance finished, the hand counter-rotation of taking turns moved the rotating shaft of band-type brake body away from induced draught fan.
The advantage of the utility model:
The rotating shaft that the utility model utilizes the trapezoidal thread screw mandrel drive to move band-type brake body and induced draught fan compresses, and employing frictional force overcomes the autobiography of induced draught fan wind wheel when unpowered, and induced draught fan is remained static.Because the trapezoidal thread screw mandrel has the rotation auto-lock function, so in a single day the rotating shaft of induced draught fan be moved the band-type brake body to embrace its state of rest highly stable, for operator's maintenance is provided convenience.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the left view of the utility model Fig. 1.
Embodiment
Embodiment below in conjunction with description of drawings the utility model.
Like Fig. 1, shown in 2: the hand braking device of the rotating shaft of the large-scale induced draught fan of the utility model; It is characterized in that by the base plate 1 that is located at induced draught fan rotating shaft 5 belows and is fixedly connected with induced draught fan platen 9; Be located at the guide rail 4 of this base plate 1 upper surface; Be located at two bearings 3 of said base plate 1 both sides respectively; Two end part are two trapezoidal threaded lead screw 2 that bearing 3 is rotationally connected therewith respectively, the trapezoidal threaded lead screw 2 mobile band-type brake body that is meshed and is slidingly connected with said guide rail 4 therewith, and what a termination of trapezoidal threaded lead screw 2 was fixedly connected therewith handly takes turns 8 compositions.The transmission process of above-mentioned constituent elements is: hand-drive is hand to be taken turns 8 and rotates; Trapezoidal threaded lead screw 2 is followed rotation; Move the band-type brake body moves on base plate 1 thereupon; When mobile band-type brake body moves to the rotating shaft 5 of embracing induced draught fan; Wind wheel 10 brakings of induced draught fan are remained static; Can carry out regular maintenance, service work this moment to induced draught fan, otherwise the wind wheel 10 of induced draught fan is a free state, and this moment, induced draught fan can proper functioning.
Described mobile band-type brake body is made up of 6 of the circular arc friction plates that slide block 7 is fixedly connected with slide block 7 therewith; The bottom of said slide block 7 and described guide rail 4 are slidingly connected; The middle part of said slide block 7 is provided with the trapezoidal thread through hole that is connected with a joggle with said trapezoidal threaded lead screw 2; The top of said slide block 7 is provided with semi-circular recesses; This semi-circular recesses surface is fixedly connected with the outer surface of said circular arc friction plate 6, and the interior surface curvature radius of this circular arc friction plate 6 and the center of circle are all consistent with the radius of curvature and the center of circle of rotating shaft 5 outer surfaces of said induced draught fan.Make full use of effective area of contact, increase frictional force, improve the braking effect of induced draught fan.
Claims (2)
1. the hand braking device of the rotating shaft of a large-scale induced draught fan; It is characterized in that by the base plate that is located at induced draught fan rotating shaft below and is fixedly connected with the induced draught fan platen; Be located at the guide rail of this plate upper surface, be located at two bearings of said base plate both sides respectively, two end part are two trapezoidal threaded lead screw that bearing is rotationally connected therewith respectively; The trapezoidal threaded lead screw mobile band-type brake body that is meshed and is slidingly connected with said guide rail therewith, therewith a termination of trapezoidal threaded lead screw be fixedly connected hand take turns form.
2. the hand braking device of large-scale induced draught fan rotating shaft according to claim 1; It is characterized in that described mobile band-type brake body is made up of the circular arc friction plate that slide block is fixedly connected with slide block therewith; The bottom of said slide block and described guide rail are slidingly connected; The middle part of said slide block is provided with the trapezoidal thread through hole that is connected with a joggle with said trapezoidal threaded lead screw; The top of said slide block is provided with semi-circular recesses, and this semi-circular recesses surface is fixedly connected with the outer surface of said circular arc friction plate, and the interior surface curvature radius of this circular arc friction plate and the center of circle are all consistent with the radius of curvature and the center of circle of the rotating shaft outer surface of said induced draught fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201003484U CN202510401U (en) | 2012-03-17 | 2012-03-17 | Hand-cranking braking device for rotating shaft of large-scale induced draft fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201003484U CN202510401U (en) | 2012-03-17 | 2012-03-17 | Hand-cranking braking device for rotating shaft of large-scale induced draft fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510401U true CN202510401U (en) | 2012-10-31 |
Family
ID=47062891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201003484U Expired - Lifetime CN202510401U (en) | 2012-03-17 | 2012-03-17 | Hand-cranking braking device for rotating shaft of large-scale induced draft fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510401U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085044A (en) * | 2012-12-18 | 2013-05-08 | 鞍钢集团矿业公司 | Hydraulic pressure support device for preventing steam turbine rotor from bending |
| CN108099942A (en) * | 2017-12-18 | 2018-06-01 | 方特欢乐世界（芜湖）经营管理有限公司 | A kind of fan wheel auxiliary braking formula railcar |
| CN108773816A (en) * | 2018-07-04 | 2018-11-09 | 江苏安全技术职业学院 | A kind of hoistable platform for repair |
| CN110081012A (en) * | 2019-04-17 | 2019-08-02 | 江苏常熟发电有限公司 | Suction ventilator rotor brake |
-
2012
- 2012-03-17 CN CN2012201003484U patent/CN202510401U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085044A (en) * | 2012-12-18 | 2013-05-08 | 鞍钢集团矿业公司 | Hydraulic pressure support device for preventing steam turbine rotor from bending |
| CN108099942A (en) * | 2017-12-18 | 2018-06-01 | 方特欢乐世界（芜湖）经营管理有限公司 | A kind of fan wheel auxiliary braking formula railcar |
| CN108099942B (en) * | 2017-12-18 | 2024-03-22 | 华强方特(芜湖)文化产业有限公司 | Auxiliary braking type rail car for fan wheel |
| CN108773816A (en) * | 2018-07-04 | 2018-11-09 | 江苏安全技术职业学院 | A kind of hoistable platform for repair |
| CN110081012A (en) * | 2019-04-17 | 2019-08-02 | 江苏常熟发电有限公司 | Suction ventilator rotor brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |