CN102070052B - 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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- CN102070052B CN102070052B CN 201010269459 CN201010269459A CN102070052B CN 102070052 B CN102070052 B CN 102070052B CN 201010269459 CN201010269459 CN 201010269459 CN 201010269459 A CN201010269459 A CN 201010269459A CN 102070052 B CN102070052 B CN 102070052B
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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 for measuring 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, then measure respectively ascending for elevator, when descending, when lift car and Elevator weight sensor were in the same level position, the current value of traction motor was then on plane coordinates, respectively take ascending for elevator, loading rate when descending as abscissa, take current value corresponding to the traction motor that records as ordinate, draw up, descending curve, these two corresponding 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 according to different heap(ed) capacities lift car manually to be loaded;
(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 the same level position, 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 simultaneously measurement process.This measurement mechanism is simple in structure, can be used in the present invention the method for measurement of described balance coefficient of elevator.
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:
At fixing sandwiched one wire cable clamp of the steel rope of Elevator weight sensor side, and below wire cable clamp, be fixedly installed 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 the elevator traction sheave both sides and Elevator weight sensor are on the same level position, wire cable clamp freely is 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 to get 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 some Elevator weight sensors 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 complicated measurement mechanism.
Therefore the contriver has expected the difference (W-G) of direct measurement lift car and Elevator weight sensor.Namely when the counterweight of elevator and car are in the same level position in the traction sheave both sides, measure the weight difference (W-G) of counterweight and car.At this moment, traction sheave for elevator, the length to heavy side steel rope and cage side steel rope of cross-over connection on it, identical when being in the same level position because of counterweight and car, 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, therefore just can directly calculate to get the equilibrium factor of elevator according to (W-G) that record.
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 wire cable clamp, its geometrical clamp are located on the steel rope of Elevator weight sensor side, and described wire cable clamp arranges with described steel rope is vertical;
Two force transducers are fixed at respectively below the left and right two ends of described wire cable clamp, and the bearing surface of described two force transducers all arranges 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 respectively correspondence 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 bearing surface arrange vertical with steel rope all the time that is fixed at the force transducer on it;
One regulates support, is located between described fixed base plate and the regulating plate, is used for the fixedly relative position between the fixed base plate and regulating plate.
Because different elevator, its traction steel-cable is different from 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 wire cable clamp vertically is 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 arranges 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 occur, thereby guarantee survey precision.
Preferably, on described each force transducer also equal correspondence be provided with a taper beaer, described taper beaer correspondence is located between the lower surface of force transducer and wire cable clamp.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 wire cable clamp comprises:
One fixture substrate, its medial surface are provided with a V-type groove along its length direction setting;
One anchor clamps clamping plate, the position of the corresponding V-type groove of its medial surface is provided with a circular-arc projection, and described anchor clamps clamping plate are captiveed joint with fixture substrate, described circular-arc projection and V-type groove corresponding matching clamping steel wire rope;
Two chucking pressure pieces are fixed at respectively the two ends, the left and right sides of described fixture substrate and anchor clamps clamping plate, 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 strain-type force sensor.
The present invention makes it have following advantage owing to having adopted technique scheme:
1. the method for measurement of balance coefficient of elevator of the present invention is by adopting force transducer directly to measure the weight difference of Elevator weight sensor and lift car, obtain balance coefficient of elevator, belong to direct metering system, compare with other indirect metering systems, have higher accuracy.
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, greatly simplify measurement procedure, 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 wire cable clamp.
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:
The left pressure block of 1-traction steel-cable 2-fixture substrate 3-anchor clamps
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-wire cable clamp 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 sheave 19 by traction steel-cable 1.Wire cable clamp 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 for reading the value that force transducer records.
As shown in Figure 1, wire cable clamp is the force transmission member among the present invention, when it is used for measuring the weight difference of Elevator weight sensor and lift car, mobile with traction steel-cable 1 when Elevator weight sensor moves down, thus make the left pressure block 3 of anchor clamps at anchor clamps two ends and the bearing surface that the right pressure block 5 of anchor clamps is pushed down force transducer.Wire cable clamp comprises: 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-type groove, and lateral surface is provided with the groove that rotates for the restriction bolt.The position of the corresponding V-type groove of the medial surface of anchor clamps clamping plate 4 is provided with circular-arc projection, be used for clamping 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 screwed in the lateral surface of clip base 2, cover the bolt 7 that is embedded in the groove, make it not skid off groove.The left pressure block 3 of anchor clamps and the right pressure block 5 of anchor clamps are fixed at respectively the two ends, the left and right sides of anchor clamps, are used for pushing 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 the hinged regulating plate 9 of rotating shaft 13 and fixed base plate 8, and the adjust bar that is used for angle α between location fixed 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 subject 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 consists of bridge arrangement by many strain-gaugies, and the resistance value of stressed rear 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, be used for 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 pressurized 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 indirectly read observed reading 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 as far as possible vertical 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 wire cable clamp 20 two ends greater than 15mm, then manually declutching allows Elevator weight sensor slightly move down, and 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 wire cable clamp 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 wire cable clamp 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, record 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, measurement mechanism of the present invention is simple in structure, is convenient to install and operation, and method of measurement measurement process of the present invention is simple, and survey precision is high, has good implementation result.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates 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 (8)
1. the method for measurement of a balance coefficient of elevator is characterized in that, comprises the following steps:
At fixing sandwiched one wire cable clamp of the steel rope of Elevator weight sensor side, and below wire cable clamp, be fixedly installed 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 the elevator traction sheave both sides and Elevator weight sensor are on the same level position, wire cable clamp freely is 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 to get balance coefficient of elevator;
Wherein, described wire cable clamp comprises:
One fixture substrate, its medial surface are provided with a V-type groove along its length direction setting;
One anchor clamps clamping plate, the position of the corresponding V-type groove of its medial surface is provided with a circular-arc projection, and described anchor clamps clamping plate are captiveed joint with fixture substrate, described circular-arc projection and V-type groove corresponding matching clamping steel wire rope;
Two chucking pressure pieces are fixed at respectively the two ends, the left and right sides of described fixture substrate and anchor clamps clamping plate, and the corresponding top of being located at two force transducers.
2. the measurement mechanism of a balance coefficient of elevator, be located at elevator to heavy side, it is characterized in that comprising:
One wire cable clamp, its geometrical clamp are located on the steel rope of Elevator weight sensor side, and described wire cable clamp arranges with described steel rope is vertical;
Two force transducers are fixed at respectively below the left and right two ends of described wire cable clamp, and the bearing surface of described two force transducers all arranges with described steel rope is vertical;
One meter is connected with described two force transducers, reads the value that two force transducers record;
Wherein, described wire cable clamp comprises:
One fixture substrate, its medial surface are provided with a V-type groove along its length direction setting;
One anchor clamps clamping plate, the position of the corresponding V-type groove of its medial surface is provided with a circular-arc projection, and described anchor clamps clamping plate are captiveed joint with fixture substrate, described circular-arc projection and V-type groove corresponding matching clamping steel wire rope;
Two chucking pressure pieces are fixed at respectively the two ends, the left and right sides of described fixture substrate and anchor clamps clamping plate, and the corresponding top of being located at two force transducers.
3. the measurement mechanism of balance coefficient of elevator as claimed in claim 2 is characterized in that, described two force transducers respectively correspondence 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 the fixedly relative position between the fixed base plate and 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, on described each force transducer also equal correspondence be provided with a taper beaer, described taper beaer correspondence is located between the lower surface of force transducer and wire cable clamp.
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. such as the measurement mechanism of the described balance coefficient of elevator of any one among the claim 2-6, 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.
8. the measurement mechanism of balance coefficient of elevator as claimed in claim 7 is characterized in that, described force transducer is strain-type force sensor.
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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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 CN102070052A (en) | 2011-05-25 |
| CN102070052B true 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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Cited By (1)
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| CN111186742A (en) * | 2020-01-08 | 2020-05-22 | 长沙纵横电梯工程有限公司 | Elevator balance coefficient detection device and method |
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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 |
| CN103130059B (en) * | 2011-12-05 | 2016-08-31 | 秦乐 | A kind of elevator balance coefficient measurer and detection method thereof |
| CN102627207B (en) * | 2012-04-24 | 2014-02-26 | 广州市特种机电设备检测研究院 | Device for detecting equilibrium coefficient of elevator and detecting method |
| 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 |
| EP2774885B1 (en) * | 2013-03-04 | 2016-05-18 | Kone Corporation | Method for performing a balance check with an elevator |
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| 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 |
| CN208166268U (en) * | 2018-04-02 | 2018-11-30 | 洛阳威尔若普检测技术有限公司 | Adjustable pitch elevator wire rope detection device |
| 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 |
| CN113321102B (en) * | 2021-06-08 | 2022-08-30 | 卫小兵 | Elevator detection device, assembly and method for measuring mechanical number characteristics from traction sheave |
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