CN204224019U - Elevator overload protecting device - Google Patents
Elevator overload protecting device Download PDFInfo
- Publication number
- CN204224019U CN204224019U CN201420528785.5U CN201420528785U CN204224019U CN 204224019 U CN204224019 U CN 204224019U CN 201420528785 U CN201420528785 U CN 201420528785U CN 204224019 U CN204224019 U CN 204224019U
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- China
- Prior art keywords
- swing arm
- thimble
- adapter shaft
- feeler lever
- protecting device
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Abstract
The utility model discloses a kind of elevator overload protecting device, this elevator overload protecting device comprises base, adapter shaft and swing arm, and swing arm is fixed on base by adapter shaft, and swing arm and adapter shaft are rotationally connected; Swing arm is provided with the feeler lever detecting swing arm oscillating stroke, base be provided with to coordinate with feeler lever and the swing arm motion stroke detected according to feeler lever with the overload switch of output switching signal; Be provided with between base and swing arm and control the oscillating stroke of swing arm and the elastic element of reset; The top of swing arm is provided with thimble, and thimble abuts with the bottom of lift car, and thimble is between feeler lever and adapter shaft, and the horizontal throw between thimble and feeler lever is greater than the horizontal throw between thimble and adapter shaft.The invention also discloses a kind of lift facility.The utility model can improve the precision that elevator loading detects, and improves the safety that elevator runs, and reduces the cost of elevator safety inspection.
Description
Technical field
The utility model relates to elevator technology field, particularly relates to a kind of elevator overload protecting device.
Background technology
The overload detector that current elevator industry uses mainly is divided into induction and mechanical type two kinds, and the compression stroke after both directly measuring car overload determines whether overload.But; because the elastic element compressive deformation after car overload is not very large, usually only have several millimeters, so the compression stroke of conduction overload protection device also only has several millimeters; so little measurement stroke, usually can cause that survey precision is not high, the inaccurate phenomenon of check weighing occurs.When lift car seriously overloads, overload protection device does not detect, elevator will accelerate to slip car downwards, until clash into pit energy disperser, causes great life and property loss.
Utility model content
It is lower that main purpose of the present utility model is to solve elevator car loading weight detecting precision, easily causes the technical matters of safety misadventure.
For achieving the above object, the utility model provides a kind of elevator overload protecting device, and described elevator overload protecting device comprises base, adapter shaft and swing arm, and described swing arm is fixed on base by described adapter shaft, and described swing arm and described adapter shaft are rotationally connected; Described swing arm is provided with the feeler lever detecting described swing arm oscillating stroke, described base be provided with to coordinate with described feeler lever and the described swing arm motion stroke detected according to described feeler lever with the overload switch of output switching signal; Be provided with between described base and swing arm and control the oscillating stroke of described swing arm and the elastic element of reset; The top of described swing arm is provided with thimble, described thimble abuts with the bottom of lift car, described thimble is between described feeler lever and described adapter shaft, and the horizontal throw between described thimble and described feeler lever is greater than the horizontal throw between described thimble and described adapter shaft.
Preferably, the stay bearing plate that described base comprises substrate and is directly located on described substrate, described adapter shaft level is located on described stay bearing plate, described swing arm to be located on described adapter shaft and with described substrate-parallel.
Preferably, described adapter shaft is arranged with bearing, described swing arm is provided with rotates adaptive axis hole with described bearing.
Preferably, the horizontal throw between described thimble and described feeler lever is 180 millimeters, and the horizontal throw between described thimble and described adapter shaft is 50 millimeters.
Preferably, the quantity of described elastic element is multiple, and elastic element described at least one and the horizontal throw between described thimble are greater than the horizontal throw between described feeler lever and described thimble.
Preferably, described elastic element comprises guide rod and is sheathed on the screw thread spring on guide rod, and one end of described guide rod is connected with described base, and the other end is connected with described swing arm, and described guide rod stretches back and forth along described base to the direction of swing arm.
In addition, for achieving the above object, the utility model also provides a kind of lift facility, and described lift facility comprises elevator overload protecting device as above; Described elevator overload protecting device comprises base, adapter shaft and swing arm, and described swing arm is fixed on base by described adapter shaft, and described swing arm and described adapter shaft are rotationally connected; Described swing arm is provided with the feeler lever detecting described swing arm oscillating stroke, described base be provided with to coordinate with described feeler lever and the described swing arm motion stroke detected according to described feeler lever with the overload switch of output switching signal; Be provided with between described base and swing arm and control the oscillating stroke of described swing arm and the elastic element of reset; The top of described swing arm is provided with thimble, described thimble abuts with the bottom of lift car, described thimble is between described feeler lever and described adapter shaft, and the horizontal throw between described thimble and described feeler lever is greater than the horizontal throw between described thimble and described adapter shaft.
The utility model is by arranging rotating swing arm at base, and in swing arm, be provided with the feeler lever detecting described swing arm oscillating stroke, described base be provided with to coordinate with described feeler lever and the described swing arm motion stroke detected according to described feeler lever with the overload switch of output switching signal, when on lift car during load capacity, by swing arm, the compression stroke exported bottom lift car is amplified on feeler lever, therefore, even if when the load-carrying changes in weight of lift car is less, the movement travel of feeler lever still has obvious change, thus improve the control accuracy of overload switch, and improve the safety of elevator operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model elevator overload protecting device preferred embodiment;
Fig. 2 is the concrete structure schematic diagram that in Fig. 1, swing arm and bracing frame are rotationally connected;
Fig. 3 is another angled arrangement schematic diagram of Fig. 1.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of elevator overload protecting device, is arranged at the bottom of lift car, for the load-carrying weight of lift car is converted to stroke distances, and when the load-carrying weight of lift car exceedes rated weight, elevator is quit work, to protect elevator.
Referring to figs. 1 through Fig. 3, in one embodiment, described elevator overload protecting device comprises base 10, adapter shaft 15 and swing arm 20, and described swing arm 20 is fixed on base 10 by described adapter shaft 15, and described swing arm 20 is rotationally connected with described adapter shaft 15; Described swing arm 20 is provided with the feeler lever 25 detecting described swing arm 20 oscillating stroke, described base 10 be provided with to coordinate with described feeler lever 25 and described swing arm 20 movement travel detected according to described feeler lever 25 with the overload switch 30 of output switching signal; Be provided with between described base 10 and swing arm 20 and control the oscillating stroke of described swing arm 20 and the elastic element 35 of reset; The top of described swing arm 20 is provided with thimble 40, described thimble 40 abuts with the bottom of described lift car 5, described thimble 40 is between described feeler lever 25 and described adapter shaft 15, and the horizontal throw D1 between described thimble 40 and described feeler lever 25 is greater than the horizontal throw D2 between described thimble 40 and described adapter shaft 15.
During assembling, first swing arm 20 is mounted on adapter shaft 15, then elastic element 35 is arranged between base 10 and swing arm 20, adjustment screw makes swing arm 20 substantially parallel with base 10, again thimble 40 is installed on the desired location at swing arm 20 top, be fixed on by feeler lever 25 in swing arm 20, overload switch 30 correspondence is arranged on base 10, and adjustment screw makes the gap between feeler lever 25 and overload switch 30 be 0 ~ 2mm.Finally, whole elevator overload protecting device is installed on the bottom of lift car 5, thimble 40 is abutted with bottom car 5.
Should be understood that, when on lift car 5 during load capacity, gravity conducts in swing arm 20 by thimble 40 by lift car 5, promote swing arm 20 to swing around adapter shaft 15, now, this swing arm 20 can promote feeler lever 25 to overload switch 30 direction motion, feeler lever 25 move certain stroke distances time, trigger overload switch 30 to open, overload switch 30 exports energizing signal control elevator and quits work.Wherein, in overload switch 30, can microswitch push-button be set, and arrange between feeler lever 25 and microswitch push-button there is certain stroke distances, this distance is arranged according to the payload ratings weight of lift car 5, namely when the Action of Gravity Field of lift car 5 is on thimble 40, this feeler lever 25 just moves to microswitch push-button place, is opened by this microswitch push-button.Be understandable that, because the horizontal throw between described thimble 40 and described feeler lever 25 is greater than the horizontal throw between described thimble 40 and described adapter shaft 15, swing arm 20 is made to be greater than the oscillating stroke of swing arm 20 near adapter shaft 15 one end away from the oscillating stroke of adapter shaft 15 one end, therefore, after the load-carrying weight of lift car 5 is converted to stroke, the trip is exaggerated, make when the load-carrying changes in weight of lift car 5 is less, the movement travel of feeler lever 25 still has obvious change, thus improve the control accuracy of overload switch 30, then improve the safety that elevator runs.
It should be noted that, above-mentioned elastic element 35 can select spring or other there is element compared with strong elasticity.Wherein, the quantity of elastic element 35 is not limit, and can be one, also can be multiple.Preferably, when elastic element 35 is one, the horizontal throw between described elastic element 35 and described adapter shaft 15 is greater than the horizontal throw between described feeler lever 25 and described adapter shaft 15.When elastic element 35 is multiple, can be distributed between base 10 and swing arm 20, to ensure that swing arm 20 has enough elastic restoring forces after being squeezed, make swing arm 20 return to initial position, and thimble 40 is abutted with the bottom of lift car 5.Wherein, thimble 40 can select hexagonal bar iron.In addition, horizontal throw D1 between described thimble 40 and the described feeler lever 25 horizontal throw D2 be greater than between described thimble 40 and described adapter shaft 15 is the oscillating stroke in order to amplify swing arm 20, in a preferred embodiment, horizontal throw between described thimble 40 and described feeler lever 25 is 180 millimeters, and the horizontal throw between described thimble 40 and described adapter shaft 15 is 50 millimeters.Wherein, export horizontal throw 180+50=230 millimeter between the feeler lever 25 of the compression stroke signal bottom lift car 5 and adapter shaft 15, therefore, this compression stroke signal will be exaggerated 230 ÷ 50=4.6 doubly, namely when the compression stroke bottom lift car 5 is 5 millimeters, the compression stroke be amplified on feeler lever 25 is just 5 × 4.6=23 millimeter, thus can trigger overload switch 30 easily, improves the control accuracy of overload switch 30.
The utility model is by arranging rotating swing arm 20 at base 10, and in swing arm 20, be provided with the feeler lever 25 detecting described swing arm 20 oscillating stroke, described base 10 be provided with to coordinate with described feeler lever 25 and described swing arm 20 movement travel detected according to described feeler lever 25 with the overload switch 30 of output switching signal, when on lift car during load capacity, by swing arm, the compression stroke exported bottom lift car is amplified on feeler lever, therefore, even if when the load-carrying changes in weight of lift car 5 is less, the movement travel of feeler lever 25 still has obvious change, thus improve the control accuracy of overload switch 30, and improve the safety of elevator operation.In addition, the accuracy of detection of elevator loading improves, and can also improve percent of pass during elevator safety inspection, reduce safety verification cost.
Be understandable that, above-mentioned base 10 comprises substrate 11 and is directly located at the stay bearing plate 12 on described substrate 11, and described adapter shaft 15 level is located on described stay bearing plate 12, and described swing arm 20 to be located on described adapter shaft 15 and parallel with described substrate 11.Wherein, swing arm 20 is parallel with substrate 11, can ensure the harmony of each drive disk assembly.
Further, in order to reduce friction, described adapter shaft 15 is arranged with bearing 45, described swing arm 20 is provided with rotates adaptive axis hole (scheming not shown) with described bearing 45.This bearing 45 can reduce friction force when swing arm 20 relatively rotates with adapter shaft 15, thus decreases the wearing and tearing to adapter shaft.
Further, the quantity of described elastic element 35 is multiple, and the horizontal throw described at least one between elastic element 35 and described thimble 40 is greater than the horizontal throw between described feeler lever 25 and described thimble 40.By multiple elastic element 35, the present embodiment can ensure that swing arm 20 has enough elastic restoring forces after being squeezed, swing arm 20 is made to be in open configuration relative to base 10, to eliminate the drive gap between each driving parts, ensure the amplification precision of load signal to greatest extent.
Elastic element 35 in above-described embodiment can adopt following structure to realize, described elastic element 35 comprises guide rod and is sheathed on the screw thread spring on guide rod, one end of described guide rod is connected with described base 10, the other end is connected with described swing arm 20, and described guide rod stretches along the horizontal direction of described base 10.Wherein, guide rod is used for preventing the lateral bending distortion when being squeezed of screw thread spring, to improve the reliability coordinated between each driving parts.
It should be noted that, the above-mentioned version that also can refer to overload switch 30 and feeler lever 25 except overload switch 30, arrange an outgoing call again to stop micro-switch 50, during to reach the payload ratings weight of elevator in the load-carrying weight of lift car 5 or to be slightly less than the payload ratings weight of elevator, even if the outside request of stopping, elevator does not respond, still according to original control sequence running, to improve the operating efficiency of elevator.
The utility model also provides a kind of lift facility, and in one embodiment, this lift facility comprises above-mentioned elevator overload protecting device; The detailed construction of described elevator overload protecting device can refer to above-described embodiment, repeats no more herein; Owing to employing above-mentioned elevator overload protecting device in lift facility, therefore, it is possible to improve the precision of elevator loading detection, improve the safety that elevator runs.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification sheets and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. an elevator overload protecting device, is characterized in that, described elevator overload protecting device comprises base, adapter shaft and swing arm, and described swing arm is fixed on base by described adapter shaft, and described swing arm and described adapter shaft are rotationally connected; Described swing arm is provided with the feeler lever detecting described swing arm oscillating stroke, described base be provided with to coordinate with described feeler lever and the described swing arm motion stroke detected according to described feeler lever with the overload switch of output switching signal; Be provided with between described base and swing arm and control the oscillating stroke of described swing arm and the elastic element of reset; The top of described swing arm is provided with thimble, described thimble abuts with the bottom of lift car, described thimble is between described feeler lever and described adapter shaft, and the horizontal throw between described thimble and described feeler lever is greater than the horizontal throw between described thimble and described adapter shaft.
2. elevator overload protecting device as claimed in claim 1; it is characterized in that; the stay bearing plate that described base comprises substrate and is directly located on described substrate, described adapter shaft level is located on described stay bearing plate, described swing arm to be located on described adapter shaft and with described substrate-parallel.
3. elevator overload protecting device as claimed in claim 1, is characterized in that, described adapter shaft is arranged with bearing, and described swing arm is provided with rotates adaptive axis hole with described bearing.
4. elevator overload protecting device as claimed in claim 1, it is characterized in that, the horizontal throw between described thimble and described feeler lever is 180 millimeters, and the horizontal throw between described thimble and described adapter shaft is 50 millimeters.
5. elevator overload protecting device as claimed in claim 1, it is characterized in that, the quantity of described elastic element is multiple, and elastic element described at least one and the horizontal throw between described thimble are greater than the horizontal throw between described feeler lever and described thimble.
6. the elevator overload protecting device as described in claim 1 or 5; it is characterized in that; described elastic element comprises guide rod and is sheathed on the screw thread spring on guide rod; one end of described guide rod is connected with described base; the other end is connected with described swing arm, and described guide rod stretches back and forth along described base to the direction of swing arm.
7. a lift facility, is characterized in that, described lift facility comprises the elevator overload protecting device as described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528785.5U CN204224019U (en) | 2014-09-15 | 2014-09-15 | Elevator overload protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528785.5U CN204224019U (en) | 2014-09-15 | 2014-09-15 | Elevator overload protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204224019U true CN204224019U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420528785.5U Expired - Fee Related CN204224019U (en) | 2014-09-15 | 2014-09-15 | Elevator overload protecting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204224019U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876088A (en) * | 2015-06-22 | 2015-09-02 | 南通三洋电梯有限责任公司 | Lift car overload protection device |
| CN105858389A (en) * | 2016-05-24 | 2016-08-17 | 广州广日电梯工业有限公司 | Elevator weighing stroke amplification device and elevator with same |
| CN106044451A (en) * | 2016-08-05 | 2016-10-26 | 湖南世优电气股份有限公司 | Climb-free device overload detection device |
| CN108689274A (en) * | 2017-04-10 | 2018-10-23 | 株式会社日立制作所 | The weighing device of elevator |
-
2014
- 2014-09-15 CN CN201420528785.5U patent/CN204224019U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876088A (en) * | 2015-06-22 | 2015-09-02 | 南通三洋电梯有限责任公司 | Lift car overload protection device |
| CN105858389A (en) * | 2016-05-24 | 2016-08-17 | 广州广日电梯工业有限公司 | Elevator weighing stroke amplification device and elevator with same |
| CN106044451A (en) * | 2016-08-05 | 2016-10-26 | 湖南世优电气股份有限公司 | Climb-free device overload detection device |
| CN108689274A (en) * | 2017-04-10 | 2018-10-23 | 株式会社日立制作所 | The weighing device of elevator |
| CN108689274B (en) * | 2017-04-10 | 2020-07-07 | 株式会社日立制作所 | Weighing device of elevator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150325 Termination date: 20180915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |