CN102424318A - Fan elevator with mechanical overload protection device - Google Patents
Fan elevator with mechanical overload protection device Download PDFInfo
- Publication number
- CN102424318A CN102424318A CN201110377089XA CN201110377089A CN102424318A CN 102424318 A CN102424318 A CN 102424318A CN 201110377089X A CN201110377089X A CN 201110377089XA CN 201110377089 A CN201110377089 A CN 201110377089A CN 102424318 A CN102424318 A CN 102424318A
- Authority
- CN
- China
- Prior art keywords
- companion ladder
- overload protection
- blower fan
- machine overload
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Types And Forms Of Lifts (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan elevator with a mechanical overload protection device. The fan elevator comprises an elevator main frame, a movable type lifting mechanism and an electric control box, wherein the movable type lifting mechanism is arranged on the elevator main frame, the fan elevator also comprises the mechanical overload protection device arranged between the lifting mechanism and the elevator main frame, the mechanical overload protection device is triggered when the load of the fan elevator is greater than or equal to the preset maximum load, and in addition, triggering signals are transmitted into the electric control box through an output port of the mechanical overload protection device. The mechanical overload protection device is arranged on the fan elevator. A disc spring adopted by the fan elevator has the characteristics that the rigidity is high, the buffering and vibration absorption capability is high, and great load can be borne through small deformation. The magnitude of the load can be converted into the moving displacement value through the disc spring.
Description
Technical field
The present invention relates to a kind of blower fan companion ladder, particularly relate to a kind of blower fan companion ladder with machine overload protection.
Background technology
Overload protection of the prior art adopts the load limiter of thermal relay to carry out overload protection usually.Load measuring cell is assembled in the system of elevator as parts, load weight is converted into electric signal.When load current surpasses load current value and through behind the certain hour, the heat that heat element produced makes and separates the control loop of cut-out electrical motor with break back contact thereby drive moving contact by bimetallic plate heated bending in the thermal relay.
But the load limiter that is to use thermal relay has following shortcoming: the components and parts easy ageing of thermal relay, and poor repeatability, the state that recovers original appears being difficult to behind thermal fatigue, the overheated several in bimetallic plate easily.
Summary of the invention
The technical matters that the present invention will solve is in order to overcome the thermal relay easy ageing of available technology adopting, and the defective of poor repeatability provides a kind of blower fan companion ladder with machine overload protection.
The present invention solves above-mentioned technical matters through following technical proposals: a kind of blower fan companion ladder with machine overload protection; Said blower fan companion ladder comprises a companion ladder body frame, and one is arranged at a mobile lift mechanism and the electric cabinet on the said companion ladder body frame;
Its characteristics are that said blower fan companion ladder comprises that also one is arranged at the machine overload protection device between said lift system and the said companion ladder body frame; When the load of said blower fan companion ladder during more than or equal to preset maximum load, said machine overload protection device is triggered, and by the output port of said machine overload protection device energizing signal is transferred in the said electric cabinet.
Preferably; Said machine overload protection device comprises a trigger board, a limit switch and an elastic mechanism; Said trigger board is fixed on the first end of said lift system; Said limit switch is fixed on the said companion ladder body frame, and an end of said elastic mechanism is fixed on the first end of the said lift system of said trigger board below, and the other end of said elastic mechanism is fixed on the said companion ladder body frame near said limit switch place.
Preferably, said limit switch comprises a switch main body, a drive spindle and a drive spindle head, and said trigger board and said drive spindle head are in contact with one another; When the load of said blower fan companion ladder during more than or equal to maximum load, said trigger board is pushed into said drive spindle and said switch main body one horizontal position, and said limit switch is triggered.
Preferably, said elastic mechanism comprises a dish-shaped spring and an installation double-screw bolt, and said disk spring is sheathed on the said installation double-screw bolt.
Preferably, an end of said installation double-screw bolt passes a bearing plate, and said bearing plate is fixed on the said companion ladder body frame near said limit switch place, and the other end of said installation double-screw bolt is welded on the first end of the said lift system of said trigger board below.
Preferably, said lift system comprises an adapter plate, and the gig that is arranged on the said adapter plate.
Preferably, a fixing pressing plate on the said companion ladder body frame, said pressing plate is pushed down at least a portion of said adapter plate.
Preferably, said adapter plate below is equipped with several rollers, makes said gig together with said adapter plate parallel motion.
Among the present invention, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge promptly gets each preferred embodiment of the present invention.
Positive progressive effect of the present invention is: the present invention is provided with the mechanical type overload protection device on the blower fan companion ladder.It is big that its disk spring that adopts has rigidity, and the buffering vibration absorption ability is strong, has the characteristic of bearing big load with small deformation.Convert magnitude of load to the moving displacement value through disk spring.Through the relative displacement between gig and the car, install limit switch additional again.When relative displacement reaches the setting maxim, when promptly suffered load has surpassed maximum load, trigger limit switch, send overload signal with this to electric cabinet.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present invention.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to specify technical scheme of the present invention.
As shown in Figure 1, a kind of blower fan companion ladder with machine overload protection of the present invention comprises that mainly a companion ladder body frame 1, is arranged on the mobile lift mechanism on the companion ladder body frame 1, an electric cabinet (not shown), and a machine overload protection device.Wherein, said machine overload protection device is arranged between said lift system and the companion ladder body frame 1.
Preferably, said machine overload protection device comprises a trigger board 6, a limit switch 7 and an elastic mechanism.Wherein, trigger board 6 is fixed on the first end of said lift system, limit switch 7 is fixed on the companion ladder body frame 1, with 1 activity of companion ladder body frame.One end of said elastic mechanism is fixed on the first end of the said lift system of trigger board 6 belows, and the other end of said elastic mechanism is fixed on the companion ladder body frame 1 near limit switch 7 places.
Further, limit switch 7 comprises a switch main body, a drive spindle and a drive spindle head here.Wherein, built-in switch and built-in output port are arranged in the said switch main body.Trigger board 6 is in contact with one another with said drive spindle head.Here, trigger board 6 does not need to captive joint with said drive spindle head, and just contacting gets final product.
The triggering mode of limit switch 7 is: when said drive spindle and said switch main body during not at a horizon, limit switch 7 is not triggered, and the built-in switch in this moment said switch main body is in closure state.The said drive spindle head of trigger board 6 compressings drives said drive spindle and freely rotates towards a direction; When said drive spindle head rotation arrives with the same horizon of said switch main body; Built-in switch in the said switch main body is broken off, and the lead-out terminal in the said switch main body is outwards exported energizing signal.
Said elastic mechanism comprises a dish-shaped spring 8 and an installation double-screw bolt 81, and disk spring 8 is sheathed on to be installed on the double-screw bolt 81.Further, a bearing plate 12 is set on the companion ladder body frame 1 near limit switch 7 places, the end that double-screw bolt 81 is installed passes a bearing plate, and at this end nut of screwing on.The other end that double-screw bolt 81 is installed is welded on the first end of the said lift system of trigger board 6 belows.
Wherein, preferably, said lift system comprises an adapter plate 11 and a gig 4.The lower end of gig 4 is fixed on the adapter plate 11 with screw, makes gig 4 with adapter plate 11 activities.In addition, a fixing pressing plate 13 makes pressing plate 13 that at least a portion of adapter plate 11 is pushed down on companion ladder body frame 1.Because pressing plate 13 is fixed on the companion ladder body frame 1, so pressing plate 13 along with companion ladder body frame 1 moves, has also limited gig 4 simultaneously and moved with whole blower fan companion ladder in vertical direction.More preferably, the below of adapter plate 11 is equipped with several rollers 14, makes gig 4 can move freely in the horizontal direction together with adapter plate 11.
Whole blower fan companion ladder adopts a head-rope 3 and several head-rope track adjusting wheels 5 (being four head-rope track adjusting wheels 5 shown in the figure) to form a companion ladder actuating mechanism.Wherein, head-rope 3 is for carrying the steel rope of blower fan companion ladder all wt, and the upper end of head-rope 3 is fixed on the fixed cross beam 2.The other end of head-rope 3 passes through each head-rope track adjusting wheel 5 successively, and gig 4 in-to-in rotors, holds derrick line 3 then through outside the blower fan companion ladder, and the lower end of head-rope 3 is fixed on the fixed end 9 the most at last.
It is following that the present invention has the working process of blower fan companion ladder of machine overload protection:
One, under said blower fan companion ladder normal operation, head-rope 3 is tightened.Said blower fan companion ladder leans on head-rope 3 fixing and carrying all wts.At this moment, trigger board 6 contacts with the drive spindle head of limit switch 7, but does not trigger limit switch.
Under this state, because said blower fan companion ladder itself has deadweight, when therefore said blower fan companion ladder was unloaded, head-rope 3 was given one of said blower fan companion ladder and the said blower fan companion ladder identical power F1 that makes progress that conducts oneself with dignity.Power F1 is transferred to the inside of gig 4 through each track adjusting wheel 5, and a tensile force f 2 is to the right arranged, and the pulling gig moves right, and moving displacement is made as S.
Like this, gig 4 drive whole erection plates 11 move right and oppress disk spring 8.Disk spring 8 is compressed the back and keeps balance for 4 one power F3 left of gig, and this moment, the deflection of disk spring 8 also was S.
Two, in said blower fan companion ladder, load, when the heap(ed) capacity of said blower fan companion ladder does not surpass its maximum load.The power F1 that head-rope 3 upwards draws increases.Then the power F2 that receives of gig 4 also increases, and the gig 4 displacement S that moves right increases.Meanwhile, disk spring 8 is further oppressed, and corresponding force F3 also increases, and with power F2 balance.When the moving displacement S of gig 4 increases, but still during less than preset displacement amount S1, the drive spindle that trigger board 6 promotes limit switches 7 rotates backward, but do not forward to said switch main body on a horizon, so limit switch 7 does not trigger yet.
Three, when the heap(ed) capacity of said blower fan companion ladder surpasses its maximum load.Gig 4 moving displacement S to the right increases, and this moment, moving displacement S was more than or equal to preset displacement amount S1.The drive spindle that trigger board 6 promotes limit switch 7 rotates backward, and when angle went to 90 °, the drive spindle of limit switch 7 and switch main body were on the same horizon, thereby triggers limit switch 7, makes that the built-in switch in the limit switch 7 is broken off.Said built-in output port is transferred to energizing signal in the electric cabinet, and system's overload warning signal is sent in electric cabinet control, and it is out of service to control said blower fan companion ladder.
Maximum load value that it should be noted that above-mentioned blower fan companion ladder can be regulated through disk spring 8.Disk spring 8 preferred thin slice shapes are easy to form assembly set.With same disk spring 8, adopt the different combinations mode, spring performance is in very large range changed, for example can adopt involutory, superimposed array mode, also can adopt compound different-thickness, the array mode of different sheet numbers etc.Wherein, when adopting superimposed array mode, with respect to same distortion, spring number load more at most is big more.
Selected 15 groups (are not definite value, can adjust) in the present embodiment for use, disk spring 8 has been superimposed together.Disk spring 8 has the performance that can bear big load with small deformation.
When needs increase the maximum load value of blower fan companion ladder, because the deflection S of disk spring 8 is fixed, then need increase the quantity of disk spring, make identical deflection can bear bigger load.
When needs reduce the maximum load value of blower fan companion ladder, need to reduce the quantity of disk spring 8, the load that makes identical deflection bear diminishes.
Therefore, the present invention has avoided the defective of traditional thermal relay, can make things convenient for the load that detects the blower fan companion ladder exactly through the machine overload protection device.Integral structure is simple, be convenient to the safety that has improved the blower fan companion ladder greatly is installed and good reproducibility.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only are casehistorys, protection scope of the present invention is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (8)
1. blower fan companion ladder with machine overload protection, said blower fan companion ladder comprises a companion ladder body frame, one is arranged at a mobile lift mechanism and the electric cabinet on the said companion ladder body frame;
It is characterized in that said blower fan companion ladder comprises that also one is arranged at the machine overload protection device between said lift system and the said companion ladder body frame; When the load of said blower fan companion ladder during more than or equal to preset maximum load, said machine overload protection device is triggered, and by the output port of said machine overload protection device energizing signal is transferred in the said electric cabinet.
2. the blower fan companion ladder with machine overload protection as claimed in claim 1; It is characterized in that; Said machine overload protection device comprises a trigger board, a limit switch and an elastic mechanism; Said trigger board is fixed on the first end of said lift system; Said limit switch is fixed on the said companion ladder body frame, and an end of said elastic mechanism is fixed on the first end of the said lift system of said trigger board below, and the other end of said elastic mechanism is fixed on the said companion ladder body frame near said limit switch place.
3. the blower fan companion ladder with machine overload protection as claimed in claim 2 is characterized in that, said limit switch comprises a switch main body, a drive spindle and a drive spindle head, and said trigger board and said drive spindle head are in contact with one another; When the load of said blower fan companion ladder during more than or equal to maximum load, said trigger board is pushed into said drive spindle and said switch main body one horizontal position, and said limit switch is triggered.
4. the blower fan companion ladder with machine overload protection as claimed in claim 2 is characterized in that, said elastic mechanism comprises a dish-shaped spring and an installation double-screw bolt, and said disk spring is sheathed on the said installation double-screw bolt.
5. the blower fan companion ladder with machine overload protection as claimed in claim 4; It is characterized in that; One end of said installation double-screw bolt passes a bearing plate; Said bearing plate is fixed on the said companion ladder body frame near said limit switch place, and the other end of said installation double-screw bolt is welded on the first end of the said lift system of said trigger board below.
6. like each described blower fan companion ladder of claim 1-5, it is characterized in that said lift system comprises an adapter plate with machine overload protection, and the gig that is arranged on the said adapter plate.
7. the blower fan companion ladder with machine overload protection as claimed in claim 6 is characterized in that, a fixing pressing plate on the said companion ladder body frame, and said pressing plate is pushed down at least a portion of said adapter plate.
8. the blower fan companion ladder with machine overload protection as claimed in claim 6 is characterized in that, said adapter plate below is equipped with several rollers, makes said gig together with said adapter plate parallel motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110377089.XA CN102424318B (en) | 2011-11-23 | 2011-11-23 | Fan elevator with mechanical overload protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110377089.XA CN102424318B (en) | 2011-11-23 | 2011-11-23 | Fan elevator with mechanical overload protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102424318A true CN102424318A (en) | 2012-04-25 |
| CN102424318B CN102424318B (en) | 2014-01-22 |
Family
ID=45958363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110377089.XA Expired - Fee Related CN102424318B (en) | 2011-11-23 | 2011-11-23 | Fan elevator with mechanical overload protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102424318B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659007A (en) * | 2012-05-15 | 2012-09-12 | 南通瑞鑫电子电器有限公司 | Elevator car overload protection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420254Y (en) * | 2000-05-11 | 2001-02-21 | 福建省第二建筑工程公司 | Overload limiter for wellhead lifter |
| JP3866622B2 (en) * | 2002-06-18 | 2007-01-10 | 三菱電機株式会社 | Seismic isolation elevator |
| CN201261671Y (en) * | 2008-06-17 | 2009-06-24 | 中际联合工业技术(北京)有限公司 | Tower barrel elevator |
| CN201343336Y (en) * | 2009-02-20 | 2009-11-11 | 中际联合工业技术(北京)有限公司 | Tower cylinder lifter |
| CN202007067U (en) * | 2010-08-24 | 2011-10-12 | 无锡市小天鹅建筑机械有限公司 | Load limiting device for hanging basket |
| CN202346535U (en) * | 2011-11-23 | 2012-07-25 | 上海东锐风电技术有限公司 | Fan elevator with mechanical overload protection |
-
2011
- 2011-11-23 CN CN201110377089.XA patent/CN102424318B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2420254Y (en) * | 2000-05-11 | 2001-02-21 | 福建省第二建筑工程公司 | Overload limiter for wellhead lifter |
| JP3866622B2 (en) * | 2002-06-18 | 2007-01-10 | 三菱電機株式会社 | Seismic isolation elevator |
| CN201261671Y (en) * | 2008-06-17 | 2009-06-24 | 中际联合工业技术(北京)有限公司 | Tower barrel elevator |
| CN201343336Y (en) * | 2009-02-20 | 2009-11-11 | 中际联合工业技术(北京)有限公司 | Tower cylinder lifter |
| CN202007067U (en) * | 2010-08-24 | 2011-10-12 | 无锡市小天鹅建筑机械有限公司 | Load limiting device for hanging basket |
| CN202346535U (en) * | 2011-11-23 | 2012-07-25 | 上海东锐风电技术有限公司 | Fan elevator with mechanical overload protection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659007A (en) * | 2012-05-15 | 2012-09-12 | 南通瑞鑫电子电器有限公司 | Elevator car overload protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102424318B (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202346535U (en) | Fan elevator with mechanical overload protection | |
| CN102311065B (en) | Electromagnetic disc brake with antifriction device | |
| CN105173959A (en) | Deflecting constant-force speed limiter | |
| CN211945800U (en) | Safety brake device of elevator | |
| CN103745896A (en) | Moving contact system of circuit breaker | |
| CN111332899B (en) | Safety braking device of elevator | |
| CN102424318A (en) | Fan elevator with mechanical overload protection device | |
| CN203733736U (en) | Moving contact system of breaker | |
| CN2919334Y (en) | Gap sensor for leak control system of air preheater | |
| CN211198267U (en) | Monitoring device for elevator | |
| CN104044980A (en) | Automatic balancing mechanism of traction machine | |
| CN201916381U (en) | Power assisting device for fan tower staircase | |
| CN103441016A (en) | Power type microswitch | |
| CN204144081U (en) | A kind of overlapping transformational structure of neutral pole of new type auto transfer switching equipment | |
| CN208570497U (en) | A kind of breaker energy storage lever | |
| CN201651510U (en) | Secondary torque control switch mechanism of valve electric device | |
| CN207743133U (en) | A kind of high voltage isolation switch contact device | |
| CN202230896U (en) | Switch device with lever ratio | |
| CN211419419U (en) | Pulley meets and hinders protection device | |
| CN2440205Y (en) | Weighing device of frameless belt conveyer scale with protection | |
| CN102904216A (en) | Motor protection device and motor using same | |
| CN117927421A (en) | Wind generating set | |
| CN112713014B (en) | Rotary roller contact structure | |
| CN214672470U (en) | Magnetic tripping mechanism of circuit breaker | |
| CN109775508A (en) | Emergency braking apparatus and elevator device with the emergency braking apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20141123 |
|
| EXPY | Termination of patent right or utility model |