CN201614210U - Elevator overload detecting device - Google Patents
Elevator overload detecting device Download PDFInfo
- Publication number
- CN201614210U CN201614210U CN2010201314770U CN201020131477U CN201614210U CN 201614210 U CN201614210 U CN 201614210U CN 2010201314770 U CN2010201314770 U CN 2010201314770U CN 201020131477 U CN201020131477 U CN 201020131477U CN 201614210 U CN201614210 U CN 201614210U
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- support
- push rod
- elevator
- detecting device
- hall element
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Abstract
The utility model relates to an elevator overload detecting device, which comprises a Hall element and an induced magnet which is parallel with the Hall element and connected with a rope hitch plate. The device is characterized by further comprising a bracket which is installed on a tractor flange beam, and a top rod which is perpendicular to the rope hitch plate and arranged on the bracket; the Hall element is arranged on the bracket; the lower end of the top rod is propped against the rope hitch plate; and the induced magnet is connected with the top rod through a connecting device and can longitudinally move with the top rod. Compared with the prior art, the elevator overload detecting device has the advantages that the measuring accuracy is high, and the rated loading capacity of the elevator cannot be reduced.
Description
Technical field
The utility model relates to a kind of elevator protection device, specifically refers to a kind of elevator overload detecting device.
Background technology
For the safety of assurance personnel, goods and elevator itself, standard GB 7588-2003 " elevator manufacturing and installation safety standard " controls, prevents that the elevator overload operation from having proposed exacting requirements the elevator load carrying ability.Except the payload space to car was limited, GB7588-2003 14.2.5 bar regulation: " when car overload, a device on the elevator should prevent that normal startup of elevator from reaching flat bed again; So-called overload is meant and surpasses 10% of rated load, and is at least 75kg.”
In addition, some controllable function of elevator are disturbed and fully loaded straight function such as anti-, and the device that also needs a measurement lift car load carrying ability provides the load signal of elevator for control system.
At present, common elevator overload detecting device mainly contains two kinds, and promptly strain-type and displacement-type are distinguished adopts pressure sensor and hall element sensor as the load signal acquisition elements.
Wherein, strain gauge transducer is mainly based on some dielectric piezoeffect, with the measured voltage that converts to.So-called piezoeffect is exactly that some material is done the time spent when the external force that is subjected in a certain direction, and its inner polarization phenomena that produce produce electric charge on its surface simultaneously, after external force is removed, return to original uncharged state again, and this phenomenon just is called piezoeffect.Highly sensitive, good frequency response that pressure sensor has, advantage such as volume is little.But the strain-type overload device must be installed when traction steel-cable is installed synchronously, debugs also more loaded down with trivial detailsly, needs to debug under unloaded, semi-load and fully loaded three kinds of operating modes, and require high to the debugging peopleware, general elevator installation personnel can't be debugged, and price is more expensive simultaneously, and cost is higher.
The displacement-type overload device is to adopt to utilize hall element sensor that Hall effect the makes input element as weight signal.So-called Hall effect is exactly on the wafer of an energising, adds the magnetic field B vertical with sheet surface, a voltage V can occur in the both lateral sides of thin slice
H, V
HThen be called Hall voltage, this phenomenon is exactly a Hall effect, is found in 1879 by U.S. physicist Hall.The hall element sensor overload device Installation and Debugging that utilize Hall effect to make are easy, and general elevator installation personnel just can be debugged, and only need once debugging to get final product.But the not high shortcoming of some precision has in use also appearred in the Hall element overload device, particularly in large-area cargo lift.When the Hall element overload device is used in the large tracts of land cargo lift the not high reason of precision roughly have following some:
1, in installation process, because installation personnel quality or sense of responsibility, the steel wire rope tension error is bigger, causes the rope hitch plate run-off the straight.The hall element sensor of load limiter is fixed on the rope hitch plate, therefore there is the bevelled angle between Hall element and the induced magnet, and Hall element is only to the magnetic induction density sensitivity perpendicular to the Hall plate surface, if out of plumb is then used normal component and is calculated by the magnetic induction density value of measuring magnetic field.So bevelled fag end version can make the distance between permanent-magnet steel and the Hall element change, so just reduced the accuracy of detection of overload detecting device.
2, because of the car area is bigger, the cargo handing personnel put goods in car position usually unbalance loading can occur, and unbalance loading will directly cause the steel wire rope tension inequality, and this also can cause the reduction of overload detecting device accuracy of detection.
3, when car is in different stops, also can produce the variation of angle between steel rope and the plumb bob vertical, and the variation of this angle also can cause the increase of steel wire rope tension, thereby causing overloading detects the reduction of shape collision accuracy of detection.
4, a lot of manufacturers are installed in the edge of rope hitch plate with hall element sensor, and sensor are not placed the center of rope hitch plate, make the easier run-off the straight of Hall element, cause will becoming of survey precision.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of survey precision high and can not reduce the elevator overload detecting device of the specified delelivered payload capability of elevator at the identical present situation of prior art.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this elevator overload detecting device, comprise Hall element and the induced magnet that parallels with Hall element, be connected rope hitch plate, and it is characterized in that also comprising:
Support is installed on the towing machine I-beam section, and described Hall element is arranged on this support;
Push rod is arranged on the support perpendicular to described rope hitch plate, and the lower end of push rod is against on the described rope hitch plate, and described induced magnet connects this push rod by connecting device and can move up and down with push rod.
Preferably, the lower end of described push rod can be taper, and it contacts with described rope hitch plate point.
The lower end of described push rod can be positioned at the middle part of described rope hitch plate.
In the such scheme, described connecting device can comprise the upper junction plate that is parallel to each other and lower connecting plate and the connection side connecting plate that is connected both; Described induced magnet is arranged on the described upper junction plate corresponding to Hall element.
Described support can have orthogonal vertical component effect and horizontal part, and the horizontal position of support is in the top of support vertical component effect; The vertical component effect of support is vertically mounted on the described I-beam section; The horizontal position of support is in the top of support, and the vertical section of this horizontal part is " U " font, comprises upper surface and lower surface and the side that is connected both; The lower connecting plate of described connecting device is between the upper surface and lower surface of described support level portion; Be provided with spring between the upper surface of support and described lower connecting plate, this spring housing is on described push rod.
Also be equipped with the connecting rod that parallels with described push rod between the upper surface of described upper junction plate, support level portion and the lower connecting plate.
Compared with prior art, the utlity model has following advantage:
1, detecting device is installed on support and the push rod, and the area of contact of push rod and rope hitch plate is little, is subjected to the influence of rope hitch plate less, even the rope hitch plate run-off the straight, it still can guarantee survey precision.
2, sampling point is that push rod head is conical, changes original face contact sampling into a some contact, has effectively avoided existing between Hall element and the induced magnet reduction of the accuracy of detection that the bevelled angle causes.
3, can easily sampling point be placed the center of rope hitch plate, reduce unbalance loading, car and be positioned at different stops and sampling point position and be in the edge and cause the influence that steel wire rope tension is changed, improve accuracy of detection.
4, guaranteed the stability of this detecting device.Because the effect of elastic component, push rod can withstand on the rope hitch plate reliably, avoided elevator because the vibration that produces during operation to the influence of this detecting device.
5, the commissioning staff is required low, general installation personnel just can debug, installation, debug convenient.
6, cheap, cost can be reduced to original about 15%, for manufacturing firm wins cost advantage.
7, this elevator overload device because of its tangible price advantage and preferably in-use performance be suitable for very much the transformation of old elevator.
Description of drawings
Fig. 1 is the schematic perspective view of the utility model embodiment mounting structure;
The planar view that Fig. 2 uses for the utility model embodiment.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, this elevator overload detecting device comprises:
Connecting device 9 comprises the upper junction plate 91 that is parallel to each other and lower connecting plate 92 and the connecting panel 93 that is connected both; Lower connecting plate 92 is between the upper surface and lower surface of support level portion, and upper junction plate 91 is positioned at the top of support level portion.
Induced magnet 6 is installed in corresponding to Hall element 7 on the lower surface of upper junction plate 91, and induced magnet 6 parallels with the end face of Hall element 7.
Spring 4, ring set is on the push rod 3 and between the upper surface of lower connecting plate 92 and support level portion, and push rod 3 is withstanding on the rope hitch plate 2 under the effect of spring 4 all the time.
Connecting rod 5 passes the upper surface and the lower connecting plate of upper junction plate, support level portion successively, and its two ends are separately fixed on the upper and lower connecting panel 91,92.
As shown in Figure 2, when car load changed, rope hitch plate 2 meeting under the effect of car gravity changed the position up and down, thereby drove moving up and down of push rod 3, and then the distance between induced magnet 6 and the Hall element 7 is changed, realize the control of elevator to overload.When elevator overloads, because the effect of steel wire rope tension causes spring 4 further to compress, when the distance between induced magnet 6 and the Hall element 7 reduces to a certain degree, magnetic induction density also increases to certain value thereupon, the upset of Hall element in-to-in binary pair can disconnect break contact in the control housing, stops elevator to start, and make door be in open mode, thereby reach the purpose of control elevator overload.
We are that 2000kg, command speed are that 0.5m/s, traction ratio are that 2: 1 cargo lift is tested to nominal payload.Wherein adopt the test structure of existing Hall element detecting device as shown in table 1, adopt the experimental result of the detecting device in the present embodiment as shown in table 2.
Table 1
Table 2
Test shows that it is bigger that overload detecting device of the prior art detects error, and at the three, four buildings meeting out of reach nominal payload, has reduced carrying capacity; And the detection of the overload detecting device in present embodiment error is less, can not occur in the situation of higher floor carrying capacity deficiency, meets standard-required.
Claims (6)
1. an elevator overload detecting device comprises Hall element and the induced magnet that parallels with Hall element, be connected rope hitch plate, it is characterized in that also comprising:
Support is installed on the towing machine I-beam section, and described Hall element is arranged on this support;
Push rod is arranged on the support perpendicular to described rope hitch plate, and the lower end of push rod is against on the described rope hitch plate, and described induced magnet connects this push rod by connecting device and can move up and down with push rod.
2. elevator overload detecting device according to claim 1 is characterized in that the lower end of described push rod is taper, and it contacts with described rope hitch plate point.
3. elevator overload detecting device according to claim 2 is characterized in that the lower end of described push rod is positioned at the middle part of described rope hitch plate.
4. according to the described elevator of the arbitrary claim of claim 1 to 3 overload detecting device, it is characterized in that described connecting device comprises the upper junction plate that is parallel to each other and lower connecting plate and the connection side connecting plate that is connected both; Described induced magnet is arranged on the described upper junction plate corresponding to Hall element.
5. elevator overload detecting device according to claim 4 is characterized in that described support has orthogonal vertical component effect and horizontal part, and the horizontal position of support is in the top of support vertical component effect; The vertical component effect of support is vertically mounted on the described I-beam section; The horizontal position of support is in the top of support, and the vertical section of this horizontal part is " U " font, comprises upper surface and lower surface and the side that is connected both; The lower connecting plate of described connecting device is between the upper surface and lower surface of described support level portion; Be provided with spring between the upper surface of support and described lower connecting plate, this spring housing is on described push rod.
6. elevator according to claim 4 overload detecting device is characterized in that also being equipped with the connecting rod that parallels with described push rod between the upper surface of described upper junction plate, support level portion and the lower connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201314770U CN201614210U (en) | 2010-03-12 | 2010-03-12 | Elevator overload detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201314770U CN201614210U (en) | 2010-03-12 | 2010-03-12 | Elevator overload detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN201614210U true CN201614210U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201314770U Expired - Lifetime CN201614210U (en) | 2010-03-12 | 2010-03-12 | Elevator overload detecting device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285569A (en) * | 2011-08-08 | 2011-12-21 | 希姆斯电梯(中国)有限公司 | Rope hitch frame for elevator cars |
| CN102627211A (en) * | 2012-04-23 | 2012-08-08 | 江苏金土木建设集团华顺工程有限公司 | Lifting overweight protection device for hoister |
| CN103072867A (en) * | 2011-10-25 | 2013-05-01 | 康力电梯股份有限公司 | Overload warning device |
| CN103072868A (en) * | 2011-10-25 | 2013-05-01 | 康力电梯股份有限公司 | Elevator overload detection method |
| CN103588061A (en) * | 2013-11-29 | 2014-02-19 | 日立电梯（中国）有限公司 | Elevator weighing device |
| CN104150320A (en) * | 2014-07-31 | 2014-11-19 | 康力电梯股份有限公司 | Rope hitch plate mount of machine-room-less car |
| CN104444688A (en) * | 2014-12-08 | 2015-03-25 | 重庆富士电梯有限责任公司 | Freight elevator and overload detecting device thereof |
| CN105173937A (en) * | 2014-06-13 | 2015-12-23 | 嘉兴市特种设备检测院 | Detector and detection method of elevator overload protection device |
| 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 |
| CN107043055A (en) * | 2017-04-06 | 2017-08-15 | 广州特种机电设备检测研究院 | A kind of uncharged elevator overload closing detecting apparatus |
| CN114655808A (en) * | 2022-05-25 | 2022-06-24 | 河南省矿山起重机有限公司 | Method for calibrating elevator overload protection device |
-
2010
- 2010-03-12 CN CN2010201314770U patent/CN201614210U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285569A (en) * | 2011-08-08 | 2011-12-21 | 希姆斯电梯(中国)有限公司 | Rope hitch frame for elevator cars |
| CN102285569B (en) * | 2011-08-08 | 2013-09-18 | 希姆斯电梯(中国)有限公司 | Rope hitch frame for elevator cars |
| CN103072867A (en) * | 2011-10-25 | 2013-05-01 | 康力电梯股份有限公司 | Overload warning device |
| CN103072868A (en) * | 2011-10-25 | 2013-05-01 | 康力电梯股份有限公司 | Elevator overload detection method |
| CN102627211A (en) * | 2012-04-23 | 2012-08-08 | 江苏金土木建设集团华顺工程有限公司 | Lifting overweight protection device for hoister |
| CN103588061B (en) * | 2013-11-29 | 2016-03-09 | 日立电梯（中国）有限公司 | Elevator weighing apparatus |
| CN103588061A (en) * | 2013-11-29 | 2014-02-19 | 日立电梯（中国）有限公司 | Elevator weighing device |
| CN105173937A (en) * | 2014-06-13 | 2015-12-23 | 嘉兴市特种设备检测院 | Detector and detection method of elevator overload protection device |
| CN104150320A (en) * | 2014-07-31 | 2014-11-19 | 康力电梯股份有限公司 | Rope hitch plate mount of machine-room-less car |
| CN104444688A (en) * | 2014-12-08 | 2015-03-25 | 重庆富士电梯有限责任公司 | Freight elevator and overload detecting device thereof |
| 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 |
| CN107043055A (en) * | 2017-04-06 | 2017-08-15 | 广州特种机电设备检测研究院 | A kind of uncharged elevator overload closing detecting apparatus |
| CN114655808A (en) * | 2022-05-25 | 2022-06-24 | 河南省矿山起重机有限公司 | Method for calibrating elevator overload protection device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |