CN102070052A - Method and device for measuring balance coefficient of elevator - Google Patents
Method and device for measuring balance coefficient of elevator Download PDFInfo
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- CN102070052A CN102070052A CN 201010269459 CN201010269459A CN102070052A CN 102070052 A CN102070052 A CN 102070052A CN 201010269459 CN201010269459 CN 201010269459 CN 201010269459 A CN201010269459 A CN 201010269459A CN 102070052 A CN102070052 A CN 102070052A
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Abstract
The invention discloses a method for measuring a balance coefficient of an elevator. The method comprises the following steps of: fixedly clamping a steel wire rope clamp on a steel wire rope on the heavy side in the elevator, fixedly arranging a pair of force-measuring sensors below the steel wire rope clamp, keeping the force-bearing surfaces of the pair of the force-measuring sensors always vertical to the steel wire rope, enabling the steel wire rope clamp to be freely pressed on the force-bearing surfaces of the pair of the force-measuring sensors when an elevator car on the two sides of an elevator traction wheel and the position of an elevator counter weight are positioned at the same horizontal position, measuring the difference between the elevator car and the elevator counter weight by using the pair of the force-measuring sensors, and then calculating the balance coefficient of the elevator according to the formula that K is equal to (W-G)/Q. In order to implement the measuring method, the invention further correspondingly provides a device for measuring the balance coefficient of the elevator, and the device is simple in structure and can implement the direct measurement of the balance coefficient of the elevator.
Description
Technical field
The present invention relates to a kind of method of measurement and device, relate in particular to a kind of method of measurement and device that is used to measure balance coefficient of elevator.
Background technology
Balance coefficient of elevator is one of important measurement parameter of lift facility safety verification.Measuring at present, the method for the equilibrium factor of installation and operation elevator is: apply to elevator and be respectively 0%, 25%, 40%, 50%, 75%, 100% load, measure ascending for elevator then respectively, when descending, when lift car and Elevator weight sensor were in same level attitude, the current value of traction motor was then on plane coordinates, be abscissa with ascending for elevator, loading rate when descending respectively, with the cooresponding current value of the traction motor that records is ordinate, draws up, descending curve, and these two pairing loading rates of intersections of complex curve are the equilibrium factor of elevator.
Yet the method for measurement of above-mentioned elevator coefficient has the following disadvantages:
(1) needs in the measurement process lift car manually to be loaded according to different heap(ed) capacities;
(2) measured current data is the series of measured values of corresponding different loads, and measurement process is not disposable measurement, so measurement process is comparatively complicated;
When (3) lift car and counterweight were in same level attitude, the transient error of amperemeter/ammtr reading, and the plotting error of mapping find intersection will directly have influence on the accuracy of equilibrium factor;
(4) existing method of measurement belongs to indirect metering system, has many measured errors.
Summary of the invention
The method of measurement and the device that the purpose of this invention is to provide a kind of balance coefficient of elevator, it can solve the on-site measurement problem of the equilibrium factor of installation and operation elevator, this method of measurement is different from existing indirect measurement method, it belongs to direct measuring method, therefore it can guarantee the survey precision of balance coefficient of elevator, has simplified measurement process simultaneously.This measurement mechanism is simple in structure, can be used for realizing the method for measurement of balance coefficient of elevator of the present invention.
Technical conceive of the present invention is: direct defined formula from balance coefficient of elevator, design a kind of measurement mechanism of balance coefficient of elevator, this device obtains balance coefficient of elevator by the weight difference of being located at elevator(lift) machine room the force transducer on the heavy side machine frame directly being measured counterweight and unloaded car.
For achieving the above object, the invention provides a kind of method of measurement of balance coefficient of elevator, it comprises the following steps:
Geometrical clamp is established steel rope anchor clamps on the steel rope of Elevator weight sensor side, and below the steel rope anchor clamps, fixedly install a pair of force transducer, keep the bearing surface of this a pair of force transducer vertical with steel rope all the time, when the lift car that is positioned at elevator traction wheel both sides and Elevator weight sensor are on the same level attitude, the steel rope anchor clamps freely are pressed on the bearing surface of a pair of force transducer, a pair of force transducer records the difference of lift car and Elevator weight sensor, then according to following formula:
K＝(W-G)/Q
In the formula: the K-balance coefficient of elevator;
The weight of W-Elevator weight sensor;
The weight of G-lift car;
Q-elevator payload ratings, this value is known quantity;
(W-G)-difference of lift car and Elevator weight sensor;
Calculate balance coefficient of elevator.
The measurement of existing balance coefficient of elevator is to adopt indirect measurement method always, and its major reason is in the balance coefficient of elevator formula, all badly during Elevator weight sensor weight W and lift car weight G test at the scene directly measures.This is because Elevator weight sensor and lift car link together by traction steel-cable, and be connected across the both sides of traction sheave, also be connected with compensated chain between Elevator weight sensor that has and the lift car, lift car also is hung with the electric towing cable of elevator, because the relation of travel of elevator (lift), the deadweight of these flexible attachment components is all greatly to the degree that can not ignore, therefore in a kind of like this system that is mutually related, the weight W of independent measurement Elevator weight sensor and the weight G of lift car are difficult to realize, needing perhaps to realize very complex measurement device.
Therefore the contriver has expected the difference (W-G) of direct measurement lift car and Elevator weight sensor.Promptly when the counterweight of elevator and car are in same level attitude in the traction sheave both sides, measure the weight difference (W-G) of counterweight and car.At this moment, traction sheave for elevator, cross-over connection on it to heavy side steel rope and cage side length of steel wire rope, identical when being in same level attitude with car because of counterweight, so the deadweight of traction steel-cable is cancelled out each other, the deadweight of the compliant member that produces because of system relationship is also all cancelled out each other, therefore can not independent measurement Elevator weight sensor weight W because of system relationship and the problem of lift car weight G just all obtained solution.Again because the elevator payload ratings all is known for each elevator, thus basis (W-G) that record just can directly calculate the equilibrium factor of elevator.
In order to realize the method for measurement of above-mentioned balance coefficient of elevator, the present invention also provides a kind of measurement mechanism of balance coefficient of elevator, its be located at elevator to heavy side, this measurement mechanism comprises:
One steel rope anchor clamps, its geometrical clamp are located on the steel rope of Elevator weight sensor side, and described steel rope anchor clamps are provided with described steel rope is vertical;
Two force transducers are fixed at respectively below the left and right two ends of described steel rope anchor clamps, and the bearing surface of described two force transducers all is provided with described steel rope is vertical;
One meter is connected with described two force transducers, reads the value that force transducer records.
Preferably, described two force transducers correspondence respectively are fixed on the two adjustable supports, and described each adjustable support includes:
One fixed base plate, its be fixedly installed on elevator to heavy side;
One regulating plate, itself and described fixed base plate are hinged, and described force transducer correspondence is fixed on each regulating plate, and described regulating plate can rotate around fixed base plate, makes that the bearing surface that is fixed at the force transducer on it is vertical with steel rope all the time to be provided with;
One regulates support, is located between described fixed base plate and the regulating plate, is used for fixing the relative position between fixed base plate and the regulating plate.
Because different elevator, its traction steel-cable is different with angle between the vertical direction, and when measuring (W-G), in order to guarantee the accuracy of result of a measurement, need to guarantee that the steel rope anchor clamps vertically are pressed on the force transducer, therefore by adjusting the angle between regulating plate and the fixed base plate, can guarantee that the bearing surface of force transducer vertically is provided with respect to steel rope, thereby realize using this device to measure the equilibrium factor of different model elevator.
Preferably, also be equipped with a positioning element between described each force transducer and each regulating plate, described positioning element comprises:
One pedestal, its underpart is provided with outside thread, and described force transducer correspondence is located in the pedestal;
One positioning nut, it is connected with the lower thread of described pedestal, and described positioning nut is fixed on the regulating plate.
The setting of above-mentioned positioning element is in order to guarantee two force transducers stress balance each other when measuring, deviation not to take place, thereby guarantee survey precision.
Preferably, also equal correspondence is provided with a taper beaer on described each force transducer, and described taper beaer correspondence is located between the lower surface of force transducer and steel rope anchor clamps.This taper beaer can adapt to the degree of eccentricity of certain limit when being under pressure, thereby reduces the loss of partial pressure, guarantees survey precision.
Preferably, described fixed base plate is provided with one and holds out against groove, and described regulating plate is provided with a slide block slot, and described adjust bar comprises:
One screw rod, the bottom of described screw rod are located at described holding out against in the groove;
One slide block, it is located in the described slide block slot, has a tapped bore on the described slide block, and the top of described screw rod is threaded with described tapped bore;
One bolt and nut is connected with described screw flight.
Preferably, described steel rope anchor clamps comprise:
One fixture substrate, its medial surface are provided with a V-slot along its length direction setting;
One anchor clamps clamping plate, the position of the corresponding V-slot of its medial surface is provided with a circular-arc projection, and described anchor clamps clamping plate are captiveed joint with fixture substrate, and described circular-arc projection and V-slot corresponding matching clamp steel rope;
Two chucking pressure pieces are fixed at the two ends, the left and right sides of described fixture substrate and anchor clamps clamping plate respectively, and the corresponding top of being located at two force transducers.During measurement, two chucking pressure pieces freely are pressed on two force transducers respectively.
Preferably, described meter is amperemeter/ammtr or volt meter or multi-meter or the digital tester that can directly read weight difference.
Preferably, described force transducer is a strain-type force sensor.
The present invention makes it have following advantage owing to adopted technique scheme:
1. the method for measurement of balance coefficient of elevator of the present invention is directly measured the weight difference of Elevator weight sensor and lift car by adopting force transducer, obtain balance coefficient of elevator, belong to direct metering system, compare, have higher accuracy with other indirect metering systems.
The method of measurement of balance coefficient of elevator of the present invention can the situation of lift car zero load next time property finish the measurement of balance coefficient of elevator, with respect to other method of measurement and structure, simplify measurement procedure greatly, reduced labour intensity, improved on-site measurement efficient.
3. the measurement mechanism of balance coefficient of elevator of the present invention, it is simple in structure, it adopts less parts just to realize the transmission of power and weight, and has guaranteed the angular adjustment of force-detecting position, thereby has realized not dismantling at the scene, not damaging the purpose that elevator components just can be realized measurement.
Description of drawings
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of Elevator weight sensor side steel rope anchor clamps.
Fig. 2 is the structural representation of adjustable support.
Fig. 3 is the structural representation that is provided with the force transducer of positioning element.
Fig. 4 is a kind of structural representation of exemplary embodiment of the measurement mechanism of balance coefficient of elevator of the present invention.
Description of reference numerals:
1-traction steel-cable 2-fixture substrate 3-anchor clamps left side pressure block
The right pressure block 6-of 4-anchor clamps clamping plate 5-anchor clamps clamp nut
7-fastening bolt 8-fixed base plate 9-regulating plate
10-screw rod 11-slide block 12-bolt and nut
13-rotating shaft 14-holds out against groove 15-taper beaer
16-force transducer pedestal 17-positioning nut 18-outgoing cable
19-traction sheave 20-steel rope anchor clamps 21-machine frame channel-section steel
22-adjustable support 23-force transducer
The specific embodiment
As shown in Figure 4, the measurement mechanism of this balance coefficient of elevator be located at elevator to heavy side, lift car and Elevator weight sensor hang on the both sides of elevator traction wheel 19 by traction steel-cable 1.Steel rope anchor clamps 20 geometrical clamps are located on the traction steel-cable 1, two adjustable supports 22 are fixed at respectively on the machine frame channel-section steel 21 to heavy side, two force transducers 23 are fixed at respectively on two adjustable supports 22, regulate bearing surface that adjustable support 22 can guarantee force transducer 23 all the time with traction steel-cable 1 vertical setting.Amperemeter/ammtr is connected with two force transducers 23, is used to read the value that force transducer records.
As shown in Figure 1, the steel rope anchor clamps are the force transmission members among the present invention, when it is used to measure the weight difference of Elevator weight sensor and lift car, when Elevator weight sensor moves down, move, thereby make the anchor clamps left side pressure block 3 at anchor clamps two ends and the bearing surface that the right pressure block 5 of anchor clamps is pushed down force transducer with traction steel-cable 1.The steel rope anchor clamps comprise: the fixture substrate 2 of strip and the anchor clamps clamping plate 4 of strip.The medial surface of fixture substrate 2 has a horizontally disposed V-slot, and lateral surface is provided with and is used to limit the groove that bolt rotates.The position of the corresponding V-slot of the medial surface of anchor clamps clamping plate 4 is provided with circular-arc projection, be used to clamp traction steel-cable 1, fixture substrate 2 is captiveed joint by 5 bolts 7 with anchor clamps clamping plate 4, the end correspondence of every bolt 7 is connected with nut 6, the bolt baffle plate is fixed on the lateral surface of clip base 2 with screw, cover the bolt 7 that is embedded in the groove, make it not skid off groove.The right pressure block 5 of anchor clamps left side pressure block 3 and anchor clamps is fixed at the two ends, the left and right sides of anchor clamps respectively, is used to push down the bearing surface of force transducer.
As shown in Figure 2, this adjustable support can manually be adjusted the degree of dip of force transducer, thereby when measuring the equilibrium factor of elevator, guarantees that the bearing surface of force transducer is vertical with pressure block.Adjustable support comprises fixed base plate 8, by rotating shaft 13 and fixed base plate 8 pivotally attached regulating plates 9, and the adjust bar that is used for angle α between positioning and fixing base plate 8 and the regulating plate 9.Wherein, force transducer is fixedly installed on the regulating plate 9, and fixed base plate 8 is provided with and holds out against groove 14, and regulating plate 9 is provided with slide block slot, and adjust bar comprises screw rod 10, the bolt and nut 12 that is threaded with screw rod 10, and the slide block 11 that is threaded with screw rod 10.The slide block slot of being located on the regulating plate 9 is passed in the upper end of screw rod 10, and slide block 11 is embedded in the slide block slot of regulating plate 9, and the lower end of screw rod 10 embeds holding out against in the groove 14 on the fixed base plate 8.Thus, rotary screw nut 12 just can be adjusted the angle α between regulating plate 9 and the fixed base plate 8, thereby changes the angle position that is placed on the force transducer on the regulating plate 9.
As shown in Figure 3, the force transducer in the present embodiment is adjustable for height strain-type force sensor.Wherein, the strain-type force element is located in the force transducer pedestal 16, and taper beaer 15 is located on the force transducer pedestal 16, the top of strain-type force element, and it passes to load-sensing unit with the power that is subjected to.The bottom of force transducer pedestal 16 is provided with outside thread, be used for being threaded with a positioning nut 17, this structure can realize that the height of force transducer heightens or turn down in the scope of 12mm, thus the stress balance when guaranteeing that two force transducers are measured the weight difference of Elevator weight sensors and lift car.Accurate strain-type force element constitutes bridge arrangement by many strain-gaugies, and the resistance value of stressed back strain-gauge changes, and causes the overbalance output voltage of bridge circuit, thus the power value of corresponding institute perception.The quad of bridge circuit is that outgoing cable 18 is drawn from the side of force transducer pedestal 16, is used to realize and being connected of amperemeter/ammtr.Can adapt to the degree of eccentricity of certain limit when being installed in taper beaer 15 pressurizeds on force transducer pedestal 16 tops, thereby reduce the partial pressure loss, guarantee survey precision.Show the DC current of access+5V in the outgoing cable 18, just can read observed reading indirectly with DC voltmeter.
For the elevator that will measure in the present embodiment, during use, the angle [alpha] of regulating between regulating plate 9 and the fixed base plate is about 30 degree.Make regulating plate 9 vertical as far as possible with multiply traction steel-cable 1.Make spacing between the pressure block 3,5 at the summit of taper beaer 15 of force transducer 23 and steel rope anchor clamps 20 two ends greater than 15mm, manually declutching then allows Elevator weight sensor move down slightly, makes above-mentioned spacing less than 15mm.Adjust the positioning nut 17 of force transducer bottom, the distance between the pressure at two ends piece 3,5 of summit and steel rope anchor clamps 20 of taper beaer 15 of two force transducers 23 is equated as far as possible, and remain between the 5-10mm.With the outgoing cable 18 access+5V direct supplys of two force transducers 23, link to each other with bridge circuit output signal in the outgoing cable 18 with DC voltmeter.Declutch manually, allow heavy side multiply traction steel-cable 1 is moved down, the pressure block 3,5 that drives steel rope anchor clamps 20 two ends freely is pressed on the taper beaer 15 of two force transducers 23.By the time after the reading of DC voltmeter tends towards stability, note the millivolt reading of DC voltmeter, nominal data according to force transducer, be converted into the power value, this has just obtained the weight difference (W-G) of Elevator weight sensor and lift car, the formula of substitution balance coefficient of elevator just can calculate balance coefficient of elevator K.
This shows that measurement mechanism of the present invention is simple in structure, be convenient to install and operation that method of measurement measurement process of the present invention is simple, the survey precision height has good implementation result.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (9)
1. the method for measurement of a balance coefficient of elevator is characterized in that, comprises the following steps:
Geometrical clamp is established steel rope anchor clamps on the steel rope of Elevator weight sensor side, and below the steel rope anchor clamps, fixedly install a pair of force transducer, keep the bearing surface of a pair of force transducer vertical with steel rope all the time, when the lift car that is positioned at elevator traction wheel both sides and Elevator weight sensor are on the same level attitude, the steel rope anchor clamps freely are pressed on the bearing surface of a pair of force transducer, a pair of force transducer records the difference of lift car and Elevator weight sensor, then according to following formula:
K＝(W-G)/Q
In the formula: the K-balance coefficient of elevator;
The weight of W-Elevator weight sensor;
The weight of G-lift car;
Q-elevator payload ratings;
(W-G)-difference of lift car and Elevator weight sensor;
Calculate balance coefficient of elevator.
2. the measurement mechanism of a balance coefficient of elevator, be located at elevator to heavy side, it is characterized in that comprising: steel rope anchor clamps, its geometrical clamp are located on the steel rope of Elevator weight sensor side, described steel rope anchor clamps are provided with described steel rope is vertical;
Two force transducers are fixed at respectively below the left and right two ends of described steel rope anchor clamps, and the bearing surface of described two force transducers all is provided with described steel rope is vertical;
One meter is connected with described two force transducers, reads the value that two force transducers record.
3. the measurement mechanism of balance coefficient of elevator as claimed in claim 2 is characterized in that, described two force transducers correspondence respectively are fixed on the two adjustable supports, and described each adjustable support includes:
One fixed base plate, its be fixedly installed on elevator to heavy side;
One regulating plate, itself and described fixed base plate are hinged, and described force transducer correspondence is fixed on each regulating plate;
One adjust bar is located between described fixed base plate and the regulating plate, is used for fixing the relative position between fixed base plate and the regulating plate.
4. the measurement mechanism of balance coefficient of elevator as claimed in claim 3 is characterized in that, also is equipped with a positioning element between described each force transducer and each regulating plate, and described positioning element comprises:
One pedestal, its underpart is provided with outside thread, and described force transducer correspondence is located in the pedestal;
One positioning nut, it is connected with the lower thread of described pedestal, and described positioning nut is fixed on the regulating plate.
5. the measurement mechanism of balance coefficient of elevator as claimed in claim 4 is characterized in that, also equal correspondence is provided with a taper beaer on described each force transducer, and described taper beaer correspondence is located between the lower surface of force transducer and steel rope anchor clamps.
6. the measurement mechanism of balance coefficient of elevator as claimed in claim 3 is characterized in that, described fixed base plate is provided with one and holds out against groove, and described regulating plate is provided with a slide block slot, and described adjust bar comprises:
One screw rod, the bottom of described screw rod are located at described holding out against in the groove;
One slide block, it is located in the described slide block slot, has a tapped bore on the described slide block, and the top of described screw rod is threaded with described tapped bore;
One bolt and nut is connected with described screw flight.
7. the measurement mechanism of balance coefficient of elevator as claimed in claim 2 is characterized in that, described steel rope anchor clamps comprise:
One fixture substrate, its medial surface are provided with a V-slot along its length direction setting;
One anchor clamps clamping plate, the position of the corresponding V-slot of its medial surface is provided with a circular-arc projection, and described anchor clamps clamping plate are captiveed joint with fixture substrate, and described circular-arc projection and V-slot corresponding matching clamp steel rope;
Two chucking pressure pieces are fixed at the two ends, the left and right sides of described fixture substrate and anchor clamps clamping plate respectively, and the corresponding top of being located at two force transducers.
8. as the measurement mechanism of any described balance coefficient of elevator among the claim 2-7, it is characterized in that described meter is amperemeter/ammtr or volt meter or multi-meter or the digital tester that can directly read weight difference.
9. the measurement mechanism of balance coefficient of elevator as claimed in claim 8 is characterized in that, described force transducer is a strain-type force sensor.
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| CN 201010269459 CN102070052B (en) | 2010-09-01 | 2010-09-01 | Method and device for measuring balance coefficient of elevator |
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| CN 201010269459 CN102070052B (en) | 2010-09-01 | 2010-09-01 | Method and device for measuring balance coefficient of elevator |
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| CN102070052A true CN102070052A (en) | 2011-05-25 |
| CN102070052B CN102070052B (en) | 2013-02-06 |
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| CN 201010269459 Expired - Fee Related CN102070052B (en) | 2010-09-01 | 2010-09-01 | Method and device for measuring balance coefficient of elevator |
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| CN102367128A (en) * | 2011-09-28 | 2012-03-07 | 快意电梯有限公司 | Device for testing balancing factor of elevator |
| CN102627207A (en) * | 2012-04-24 | 2012-08-08 | 广州市特种机电设备检测研究院 | Device for detecting equilibrium coefficient of elevator and detecting method |
| CN102745566A (en) * | 2012-07-11 | 2012-10-24 | 温州市特种设备检测中心 | Elevator balance coefficient no-load dynamic detector and method for detecting elevator balance coefficient |
| CN103130059A (en) * | 2011-12-05 | 2013-06-05 | 秦乐 | Elevator balance coefficient measuring apparatus and detection method thereof |
| CN103991765A (en) * | 2014-06-06 | 2014-08-20 | 重庆市特种设备检测研究院 | Elevator balance coefficient test system and method |
| CN105008260A (en) * | 2013-03-04 | 2015-10-28 | 通力股份公司 | Method for determining the balancing weight difference in an elevator |
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| CN102367128B (en) * | 2011-09-28 | 2013-11-20 | 快意电梯股份有限公司 | Device for testing balancing factor of elevator |
| CN102367128A (en) * | 2011-09-28 | 2012-03-07 | 快意电梯有限公司 | Device for testing balancing factor of elevator |
| CN103130059A (en) * | 2011-12-05 | 2013-06-05 | 秦乐 | Elevator balance coefficient measuring apparatus and detection method thereof |
| CN103130059B (en) * | 2011-12-05 | 2016-08-31 | 秦乐 | A kind of elevator balance coefficient measurer and detection method thereof |
| CN102627207A (en) * | 2012-04-24 | 2012-08-08 | 广州市特种机电设备检测研究院 | Device for detecting equilibrium coefficient of elevator and detecting method |
| CN102745566A (en) * | 2012-07-11 | 2012-10-24 | 温州市特种设备检测中心 | Elevator balance coefficient no-load dynamic detector and method for detecting elevator balance coefficient |
| CN102745566B (en) * | 2012-07-11 | 2015-04-22 | 温州市特种设备检测中心 | Elevator balance coefficient no-load dynamic detector and method for detecting elevator balance coefficient |
| CN105008260B (en) * | 2013-03-04 | 2017-05-31 | 通力股份公司 | Method for determining elevator balanced weight difference in elevator |
| CN105008260A (en) * | 2013-03-04 | 2015-10-28 | 通力股份公司 | Method for determining the balancing weight difference in an elevator |
| CN103991765A (en) * | 2014-06-06 | 2014-08-20 | 重庆市特种设备检测研究院 | Elevator balance coefficient test system and method |
| CN103991765B (en) * | 2014-06-06 | 2016-03-23 | 重庆市特种设备检测研究院 | Balance coefficient of elevator test macro and method |
| CN106115399A (en) * | 2016-06-30 | 2016-11-16 | 天津市特种设备监督检验技术研究院 | Elevator traction machine traction monitoring methods based on big data |
| CN106115399B (en) * | 2016-06-30 | 2018-09-28 | 天津市特种设备监督检验技术研究院 | Elevator traction machine traction force monitoring methods based on big data |
| CN107673150A (en) * | 2017-09-30 | 2018-02-09 | 苏州博量电梯科技有限公司 | Balance coefficient of elevator detection means and method |
| CN108275525A (en) * | 2018-01-17 | 2018-07-13 | 中北大学 | Express elevator operating parameter monitoring method based on dynamic analysis |
| CN108358012A (en) * | 2018-04-02 | 2018-08-03 | 洛阳威尔若普检测技术有限公司 | Adjustable pitch elevator wire rope detection device |
| CN108358012B (en) * | 2018-04-02 | 2024-02-13 | 洛阳威尔若普检测技术有限公司 | Distance-adjustable elevator steel wire rope detection device |
| CN108439140A (en) * | 2018-04-17 | 2018-08-24 | 武汉万曦智能科技有限公司 | A kind of elevator balanced property method of real-time and system improving traction machine structure |
| CN108439140B (en) * | 2018-04-17 | 2023-08-15 | 武汉万曦智能科技有限公司 | Elevator balance real-time monitoring method and system for improving traction machine structure |
| CN113321102A (en) * | 2021-06-08 | 2021-08-31 | 卫小兵 | Elevator detection device, assembly and method for measuring mechanical number characteristics from traction sheave |
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