CN104150303A - Multifunctional elevator traction transmission friction testing device and testing method - Google Patents
Multifunctional elevator traction transmission friction testing device and testing method Download PDFInfo
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- CN104150303A CN104150303A CN201310176077.XA CN201310176077A CN104150303A CN 104150303 A CN104150303 A CN 104150303A CN 201310176077 A CN201310176077 A CN 201310176077A CN 104150303 A CN104150303 A CN 104150303A
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Abstract
The invention discloses a multifunctional elevator traction transmission friction testing device and testing method. A steel wire rope of the testing device winds around a traction wheel, wrap angles are adjusted through a guide wheel, then the two ends of the steel wire rope are sequentially connected with a tension sensor and an extension spring, and the extension spring is installed at the fixing position of a loading base; a hydraulic cylinder drives the loading base to move in the axial direction of a guide rod to cause the extension spring to extend and deform, and obtained elastic force is used for generating tension of the steel wire rope; a motor is used for driving the traction wheel to rotate continuously and slowly for causing changes of the lengths of the portions, located on the two sides of the traction wheel, of the steel wire rope, and by means of the change of the elastic force of the extension spring, tension difference continuously increasing is formed in the portions, located on the two sides of the traction wheel, of the steel wire rope; when slipping occurs, the maximum of the tension difference is the largest static friction force. The testing device is easy to operate and safe, static friction and sliding friction tests can be carried out continuously, and the locked-rotor phenomenon of the motor is prevented.
Description
Technical field
What the present invention relates to is a kind of apparatus and method of field of mechanical technique, specifically a kind of multifunctional lift traction-driven friction testing arrangement and test method.
Background technology
Elevator traction system utilizes fricative traction between steel rope and traction race to drive car to move up and down, and traction being chosen and being calculated by the friction coefficient between steel rope and traction race, is directly connected to the safety of elevator operation.
GB/T7588-2003 " elevator manufacture and installation safety standard ", according to the operating condition of elevator, specifies the reference value of friction coefficient.But under actual elevator operating condition, friction coefficient can change along with lubricating condition, steel cord structure, rope sheave and rope material, baudrier etc.Doctor Zhang Peng of Shanghai Communications University simulates actual condition friction coefficient is studied, and result of study has confirmed above-mentioned phenomenon.Therefore, the change of traction condition, may cause the deviation of traction theoretical value and actual value.The once report of paper " improving the case analysis of elevator traction condition by adjusting cornerite " of delivering on the 9th phase in 2012 " Chinese elevator ", traction under steel rope after-combustion condition meets theoretical calculating, ought under delay operating mode, occur skidding, but in the time that detecting, reality there is not the skidding of estimating, clearly the actual value of traction is significantly higher than computing value, makes to detect nonconformity.Therefore, simulation actual condition is carried out the research of friction coefficient, to improving the reasonableness of traction Theoretical Design, ensures that elevator traction has important practical significance safely.
Through the literature search of prior art is found, Chinese patent name is called " elevator dray driving sliding contact fatigue wear testing machine ", notification number is CN100483105C, a kind of elevator dray driving sliding contact fatigue wear testing machine is disclosed, this equipment is adjusted contact cornerite by changing the installation site of steel rope one end in arc frame, and loads handwheel by artificial rotation and adjust that the steel rope other end is stressed changes load.
Chinese patent name is called " gasket sliding friction testing machine for mine friction hoisting machine ", number of patent application is 201110436607.0, a kind of gasket sliding friction testing machine for mine friction hoisting machine is disclosed, in this technology, frame is fixed on by pulling force sensor in steel rope one end, and the other end is connected in the hydraulic actuating cylinder that is fixed on frame.
In test, the steel rope installation site of above-mentioned two patents all relatively frame fix, by friction wheel active rotation to produce cliding friction.If use the said equipment in static friction test, require traction sheave and frame to keep relative static, cause motor in stall state, reduce service life of equipment.
In addition, be described in 201110436607.0 in technical scheme at number of patent application, cannot regulate traction sheave cornerite.
Chinese patent name is called " multifunctional friction hoisting antiskid experimental device and method ", the patent No. is 200810010174.7, this patent discloses a kind of multifunctional friction hoisting antiskid experimental device and method, this equipment need to carry out steel wire rope tension adjusting by adding weight, carry out the poor adjusting of friction wheel both sides steel wire rope tension by steel rope being applied to the form of additional friction, complicated operation is dumb, and after an offered load, the poor setting range of steel wire rope tension is limited.In addition,, if interpolation weight is unreasonable or operation order mistake, may cause safety misadventure because braking failure causes weight to promote or fall.
Chinese patent name is called " elevator armored rope bending fatigue state experimental bench ", and the patent No. is CN101216397B, and this patent discloses a kind of elevator armored rope bending fatigue state experimental bench, and wherein steel rope forms a closed ring by fag end connecting device.
The author of Sinology degree thesis whole-length " theoretical and experimental study of express elevator suspension dynamic property " adopts patent equipment that CN101216397B carries to carry out the experiment of traction steel-cable friction coefficient.Carry in test method at this paper, traction sheave is by locked, one movably trailer wagon be fixed on cable wire end connecting device, put on the tractive force of trailer wagon by change, trigger the cliding friction between steel rope and traction sheave.But due to the existence of cable wire end connecting device, cause steel rope change location limited, static friction test and cliding friction are tested and must separately be carried out, be difficult to the behavior when studying transition between static friction and cliding friction.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of multifunctional lift traction-driven friction testing arrangement and test method are provided, in order to measure the friction force between traction sheave and the steel rope of realistic operating mode, make Study on Friction Coefficient more scientific, and then improve the reasonableness that traction is calculated.
In order to realize object of the present invention, the present invention can be by the following technical solutions:
Multifunctional lift traction-driven friction testing arrangement, comprising:
One frame;
One axle is located at the traction sheave in described frame;
One traction motor that drives described traction sheave to rotate, this traction motor is arranged in described frame;
A steel rope being looped around on described traction sheave; It is characterized in that, also comprise:
One is arranged on the hydraulic actuating cylinder in described frame;
The loading pedestal of one slide arrangement in described frame, described loading support is connected with the push rod of described hydraulic actuating cylinder, by loading support motion described in this Driven by Hydraulic Cylinder;
One end of described steel rope is connected on described loading pedestal by the first pulling force sensor and the first tension spring, and the other end of steel rope is connected on described loading pedestal by the second pulling force sensor and the second tension spring;
One experimental monitor, the signal input part of this experimental monitor is connected with described first, second pulling force sensor;
One controlled hydraulic output unit, described controlled hydraulic output unit is subject to described experimental monitor control and is connected with described hydraulic actuating cylinder by oil pipe;
One motor driver, described motor driver is controlled by described experimental monitor and drives traction motor work.
In a preferred embodiment of the invention, be provided with a pair of pilot bar in described frame, described loading pedestal slide arrangement is on described a pair of pilot bar.
In a preferred embodiment of the invention, the axis of a pair of pilot bar and the axis of described hydraulic actuating cylinder are parallel.
In a preferred embodiment of the invention, also comprise a steel rope guiding parts, described steel rope guiding parts is arranged on described traction sheave and loads between pedestal, and described steel rope guiding parts leads to described steel rope.
Described steel rope guiding parts comprises a track adjusting wheel pedestal and a pair of track adjusting wheel that steel rope is play the guiding role, described track adjusting wheel pedestal is arranged in described frame, and on described track adjusting wheel pedestal, offer the track adjusting wheel mounting groove of a strip shape, the wheel shaft of a pair of propelling sheave is arranged in track adjusting wheel mounting groove, to adjust the width between centers between a pair of track adjusting wheel, and then regulate the cornerite of steel rope on traction sheave.
In a preferred embodiment of the invention, the rigidity of described the first tension spring and the second tension spring is unequal.
In a preferred embodiment of the invention, the first tension spring and the second tension spring directly hook and are loading on the hook seat of pedestal.
Use the test method of above-mentioned multifunctional lift traction-driven friction testing arrangement as follows:
Arrange according to testing tension parameter, set hydraulic actuating cylinder overhang, utilize Driven by Hydraulic Cylinder to make to load pedestal along pilot bar and move to stretching tension spring direction, produce elastic force by tension spring elongation strain and make steel rope obtain load tension; Experimental monitor is by motor driver control traction motor Slow Working, slowly rotate traction sheave, traction sheave both sides rope capacity is changed, and cause that tension spring elongation changes, impel between the steel rope of traction sheave both sides and form Tension Difference; Traction sheave continues, in rotation process, to utilize experimental monitor to pass through controlled hydraulic output unit control hydraulic cylinder, and maintenance load is constant or the one-sided steel wire rope tension of traction sheave is constant, until skid; After skidding, proceed continuous cliding friction test or utilize the sudden change relation between static friction force and force of sliding friction, stopping traction sheave and rotate; When traction sheave skids from starting to turn to steel rope and traction sheave, the traction sheave both sides poor maxim of steel wire rope tension is maximum static friction force, and when steel rope and traction sheave skid continuously, Tension Difference stationary value is force of sliding friction.Traction sheave both sides steel wire rope tension detects by the first pulling force sensor and the second pulling force sensor, and the traction sheave both sides steel wire rope tension value detecting is input in experimental monitor.
In a preferred embodiment of test method of the present invention, utilize freely rotating of traction sheave, can before rotating, traction sheave make traction sheave both sides steel wire rope tension reach state of equilibrium.
In a preferred embodiment of test method of the present invention, when friction testing, by the continuous rotation of traction sheave, traction sheave both sides rope capacity is changed continuously, and further cause that extension spring elastic force changes continuously, impel the poor continuous variation of traction sheave both sides steel wire rope tension.
Beneficial effect of the present invention is as follows:
1, test method is simple and reliable, test facility processing ease, safe;
2, in static friction process of the test, drive traction motor to rotate continuously, do not have stall phenomenon;
3, friction test can be tested Automatic continuous from static friction and be transitioned into cliding friction test, can effectively carry out friction force transition behavioral study;
4, can automatically carry out load control by the elongation of controlling hydraulic actuating cylinder, load range is adjustable, and can ensure that the tension force of traction sheave one side steel rope is definite value, makes the work of friction force analytical investigation more comprehensive;
5, utilize pulling force sensor directly to obtain the tension value of traction sheave both sides steel rope, omitted tension force distributor gears.
Brief description of the drawings
Fig. 1 is the structural representation of multifunctional lift traction-driven friction testing arrangement of the present invention.
Fig. 2 is the track adjusting wheel base construction schematic diagram of steel rope guiding parts of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated: the present embodiment is implemented under taking technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1 and Figure 2, the multifunctional lift traction-driven friction testing arrangement providing in figure comprises a frame 19, and in frame 19, axle is provided with a traction sheave 1 and a hydraulic actuating cylinder 5, steel rope guiding parts, a pair of pilot bar 8,10 are installed.Traction sheave 1 relies on the traction motor 17 being arranged in frame 19 to drive, and traction motor 17 is controlled by motor driver 16, and motor driver 16 is controlled by an experimental monitor 13.Motor driver 16 is controlled the kinematic velocity of motor 17 according to the controlling quantity of experimental monitor 13.
Steel rope 4 is walked around the pulling force sensor 6,12 of the each connection in two ends after traction sheave 1, pulling force sensor 6,12 is connected to and is loaded on pedestal 9 by tension spring 7,11 respectively, and connection mode is that tension spring 7,11 is directly hooked on the hook seat loading on pedestal 9.Load pedestal 9 and be slidably mounted on a pair of pilot bar 8,10, the push rod of hydraulic actuating cylinder 5 is connected with loading pedestal 9, and the motion of this loading pedestal 9 relies on hydraulic actuating cylinder 5 to carry out.
In this specific embodiment, the axis of a pair of pilot bar 8,10 is parallel with the axis of hydraulic actuating cylinder 5, and when hydraulic actuating cylinder 5 is worked, the push rod in hydraulic actuating cylinder 5 promotes to load pedestal 9 and moves along a pair of pilot bar 8,10.Hydraulic actuating cylinder 5 is controlled by controlled hydraulic output unit 14, and controlled hydraulic output unit 14 is controlled by experimental monitor 13.The tension value at the detected steel rope of pulling force sensor 6,12 4 two ends is input in experimental monitor 13.Controlled hydraulic output unit 14 is controlled the elongation of hydraulic actuating cylinder 5 according to the controlling quantity of experimental monitor 13.
Steel rope guiding parts is arranged on traction sheave 1 and loads between pedestal 9, and steel rope guiding parts leads to regulate the cornerite of steel rope 4 on traction sheave 1 to steel rope 4.
Steel rope guiding parts comprises a track adjusting wheel pedestal 2 and a pair of track adjusting wheel that steel rope 4 is play the guiding role 3,15, track adjusting wheel pedestal 2 is arranged in frame 19, and on track adjusting wheel pedestal 2, offer the track adjusting wheel mounting groove 18 of a strip shape, the wheel shaft of a pair of propelling sheave 3,15 is arranged in track adjusting wheel mounting groove 18, so just can adjust the width between centers between a pair of track adjusting wheel 3,15, and then regulate the cornerite of steel rope 4 on traction sheave 1.
When the present embodiment work, starting before friction force test, by traction motor 1 power-off the relevant braking of cancellation, make the traction sheave 5 being connected with traction motor 1 in free rotary state; According to test parameters, adjust the installation site of track adjusting wheel 3,15 in the mounting groove 18 of track adjusting wheel pedestal 2 to obtain the cornerite of steel rope 4 on traction sheave 5; According to test parameters, set the elongation of hydraulic actuating cylinder 5, utilize hydraulic actuating cylinder 5 drive load pedestals 9 to move along stretching tension spring 7,11 directions along pilot bar 8,10.
After tension spring 7,11 elongation strains, produce elastic force, this elastic force can make the steel rope 4 that is positioned at traction sheave 5 both sides obtain load tension; By freely rotating of traction sheave 5, make the tension force in the steel rope 4 of traction sheave 5 both sides reach balance; After equalization of strain, start traction motor 1, utilize motor driver 16 to drive traction motor 1 to drive traction sheave 5 slowly to rotate, utilize experimental monitor 13 to record the reading of pulling force sensor 6,12, pulling force sensor 6,12 reading differences are traction sheave 5 both sides steel rope 4 Tension Difference.
Traction sheave 5 continues in rotation process, and traction sheave 5 both sides steel rope 4 length change, and cause that tension spring 7,11 elongations change, and impels 4 of traction sheave 5 both sides steel ropes to form Tension Difference; Traction sheave 5 continues, in rotation process, to utilize experimental monitor 13, controls hydraulic actuating cylinder 5 move by controlled hydraulic output unit 14, keeps constant or one-sided steel rope 4 constant tensions of traction sheave 5 of load, until skid; After skidding, can proceed cliding friction test, or utilize the sudden change relation between static friction force and force of sliding friction, traction sheave 5 is braked; When traction sheave 5 skids with traction sheave 5 from starting to turn to steel rope 4, traction sheave 5 both sides steel rope 4 Tension Difference maxims are maximum static friction force, and when steel rope 4 skids continuously with traction sheave 5, Tension Difference stationary value is force of sliding friction; After end of test, regain hydraulic actuating cylinder 5, hydraulic actuating cylinder 5 drives loading pedestal 9 to move to shortening tension spring 7,11 directions along pilot bar 8,10, tension spring 7,11 length are recovered, eliminate steel rope load, or by traction motor 1 power-off and cancel relevant braking, make the traction sheave 5 being connected with traction motor 1 in free rotary state, freely rotate the Tension Difference in elimination steel rope 4 by traction sheave 5.
Claims (10)
1. multifunctional lift traction-driven friction testing arrangement, comprising:
One frame;
One axle is located at the traction sheave in described frame;
One traction motor that drives described traction sheave to rotate, this traction motor is arranged in described frame;
A steel rope being looped around on described traction sheave; It is characterized in that, also comprise:
One is arranged on the hydraulic actuating cylinder in described frame;
The loading pedestal of one slide arrangement in described frame, described loading support is connected with the push rod of described hydraulic actuating cylinder, by loading support motion described in this Driven by Hydraulic Cylinder;
One end of described steel rope is connected on described loading pedestal by the first pulling force sensor and the first tension spring, and the other end of steel rope is connected on described loading pedestal by the second pulling force sensor and the second tension spring;
One experimental monitor, the signal input part of this experimental monitor is connected with described first, second pulling force sensor;
One controlled hydraulic output unit, described controlled hydraulic output unit is subject to described experimental monitor control and is connected with described hydraulic actuating cylinder by oil pipe;
One motor driver, described motor driver is controlled by described experimental monitor and drives traction motor work.
2. multifunctional lift traction-driven friction testing arrangement as claimed in claim 1, is characterized in that, is provided with a pair of pilot bar in described frame, and described loading pedestal slide arrangement is on described a pair of pilot bar.
3. multifunctional lift traction-driven friction testing arrangement as claimed in claim 2, is characterized in that, the axis of a pair of pilot bar is parallel with the axis of described hydraulic actuating cylinder.
4. the multifunctional lift traction-driven friction testing arrangement as described in claim 1 or 2 or 3, it is characterized in that, also comprise a steel rope guiding parts, described steel rope guiding parts is arranged on described traction sheave and loads between pedestal, and described steel rope guiding parts leads to described steel rope.
5. multifunctional lift traction-driven friction testing arrangement as claimed in claim 4, it is characterized in that, described steel rope guiding parts comprises a track adjusting wheel pedestal and a pair of track adjusting wheel that steel rope is play the guiding role, described track adjusting wheel pedestal is arranged in described frame, and on described track adjusting wheel pedestal, offer the track adjusting wheel mounting groove of a strip shape, the wheel shaft of a pair of propelling sheave is arranged in track adjusting wheel mounting groove, to adjust the width between centers between a pair of track adjusting wheel, and then regulate the cornerite of steel rope on traction sheave.
6. multifunctional lift traction-driven friction testing arrangement as claimed in claim 1, is characterized in that, the rigidity of described the first tension spring and the second tension spring is unequal.
7. multifunctional lift traction-driven friction testing arrangement as claimed in claim 1, is characterized in that, the first tension spring and the second tension spring directly hook and loading on the hook seat of pedestal.
8. the test method of multifunctional lift traction-driven friction testing arrangement claimed in claim 1, is characterized in that specific as follows:
Arrange according to testing tension parameter, set hydraulic actuating cylinder overhang, utilize Driven by Hydraulic Cylinder to make to load pedestal along pilot bar and move to stretching tension spring direction, produce elastic force by tension spring elongation strain and make steel rope obtain load tension; Experimental monitor is by motor driver control traction motor Slow Working, slowly rotate traction sheave, traction sheave both sides rope capacity is changed, and cause that tension spring elongation changes, impel between the steel rope of traction sheave both sides and form Tension Difference; Traction sheave continues, in rotation process, to utilize experimental monitor to pass through controlled hydraulic output unit control hydraulic cylinder, and maintenance load is constant or the one-sided steel wire rope tension of traction sheave is constant, until skid; After skidding, proceed continuous cliding friction test or utilize the sudden change relation between static friction force and force of sliding friction, stopping traction sheave and rotate; When traction sheave skids from starting to turn to steel rope and traction sheave, the traction sheave both sides poor maxim of steel wire rope tension is maximum static friction force, and when steel rope and traction sheave skid continuously, Tension Difference stationary value is force of sliding friction.Traction sheave both sides steel wire rope tension detects by the first pulling force sensor and the second pulling force sensor, and the traction sheave both sides steel wire rope tension value detecting is input in experimental monitor.
9. test method as claimed in claim 8, is characterized in that, utilizes freely rotating of traction sheave, can before traction sheave rotates, make traction sheave both sides steel wire rope tension reach state of equilibrium.
10. test method as claimed in claim 8, is characterized in that, when friction testing, by the continuous rotation of traction sheave, traction sheave both sides rope capacity is changed continuously, and further cause that extension spring elastic force changes continuously, impel the poor continuous variation of traction sheave both sides steel wire rope tension.
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| CN201310176077.XA CN104150303B (en) | 2013-05-13 | 2013-05-13 | Multifunctional lift traction-driven friction testing arrangement and method of testing |
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| CN201310176077.XA CN104150303B (en) | 2013-05-13 | 2013-05-13 | Multifunctional lift traction-driven friction testing arrangement and method of testing |
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| CN104150303A true CN104150303A (en) | 2014-11-19 |
| CN104150303B CN104150303B (en) | 2016-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106744430A (en) * | 2016-12-19 | 2017-05-31 | 郑州新大方重工科技有限公司 | A kind of electric-controlled type hoisting rope aids in clamping system and method |
| CN107352353A (en) * | 2017-08-15 | 2017-11-17 | 日立电梯（中国）有限公司 | Elevator rope pulley sliding frictional wear life-span test system and its method of testing |
| CN108016964A (en) * | 2017-12-06 | 2018-05-11 | 广州广日电梯工业有限公司 | A kind of elevator rope monitoring device and method |
| CN108584618A (en) * | 2018-06-12 | 2018-09-28 | 深圳市特种设备安全检验研究院 | The test device and test method of composite steel band equlvalent coefficient of friction |
| CN108750894A (en) * | 2018-08-24 | 2018-11-06 | 湖州巨创电梯部件有限公司 | Help the device of lift car lifting |
| CN110104519A (en) * | 2019-05-29 | 2019-08-09 | 胡战生 | A kind of detection device for mechanical detection accidental movement of elevator cage |
| CN110255333A (en) * | 2017-01-13 | 2019-09-20 | 河南科技大学 | A kind of adjustable boom hoist cable rope thread tension measurement device of cornerite |
| CN110987492A (en) * | 2019-11-07 | 2020-04-10 | 日立楼宇技术（广州）有限公司 | Stress test system and method for rope wheel device |
| CN111665045A (en) * | 2020-07-10 | 2020-09-15 | 菱王电梯股份有限公司 | Simulation test method for service life of traction sheave and special device thereof |
| CN113247735A (en) * | 2021-06-11 | 2021-08-13 | 广东省特种设备检测研究院惠州检测院 | Intelligent and rapid elevator steel wire rope tension testing device |
| CN114353861A (en) * | 2021-12-02 | 2022-04-15 | 中国矿业大学 | Comprehensive detection device and method for states of suspension cable and cable clamp of suspension bridge |
| CN114459989A (en) * | 2022-01-21 | 2022-05-10 | 江苏蒙哥马利电梯有限公司 | Simulation test device and method for friction slippage inside and outside elevator steel belt |
| CN114538252A (en) * | 2022-01-18 | 2022-05-27 | 广东省特种设备检测研究院（广东省特种设备事故调查中心） | Continuous adjusting device and method for wrap angle of traction steel wire rope |
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| CN110255333A (en) * | 2017-01-13 | 2019-09-20 | 河南科技大学 | A kind of adjustable boom hoist cable rope thread tension measurement device of cornerite |
| CN107352353B (en) * | 2017-08-15 | 2019-05-03 | 日立电梯（中国）有限公司 | Elevator rope pulley sliding frictional wear life-span test system and its test method |
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| CN108016964B (en) * | 2017-12-06 | 2023-04-28 | 广州广日电梯工业有限公司 | Elevator hoisting rope monitoring device and method |
| CN108016964A (en) * | 2017-12-06 | 2018-05-11 | 广州广日电梯工业有限公司 | A kind of elevator rope monitoring device and method |
| CN108584618A (en) * | 2018-06-12 | 2018-09-28 | 深圳市特种设备安全检验研究院 | The test device and test method of composite steel band equlvalent coefficient of friction |
| CN108584618B (en) * | 2018-06-12 | 2024-05-07 | 深圳市质量安全检验检测研究院 | Test device and test method for equivalent friction coefficient of composite steel belt |
| CN108750894A (en) * | 2018-08-24 | 2018-11-06 | 湖州巨创电梯部件有限公司 | Help the device of lift car lifting |
| CN108750894B (en) * | 2018-08-24 | 2024-04-09 | 湖州巨创电梯部件有限公司 | Device for assisting lifting of elevator car |
| CN110104519A (en) * | 2019-05-29 | 2019-08-09 | 胡战生 | A kind of detection device for mechanical detection accidental movement of elevator cage |
| CN110104519B (en) * | 2019-05-29 | 2021-05-18 | 胡战生 | Detection device for mechanically detecting accidental movement of elevator car |
| CN110987492A (en) * | 2019-11-07 | 2020-04-10 | 日立楼宇技术（广州）有限公司 | Stress test system and method for rope wheel device |
| CN111665045A (en) * | 2020-07-10 | 2020-09-15 | 菱王电梯股份有限公司 | Simulation test method for service life of traction sheave and special device thereof |
| CN113247735A (en) * | 2021-06-11 | 2021-08-13 | 广东省特种设备检测研究院惠州检测院 | Intelligent and rapid elevator steel wire rope tension testing device |
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| CN114353861A (en) * | 2021-12-02 | 2022-04-15 | 中国矿业大学 | Comprehensive detection device and method for states of suspension cable and cable clamp of suspension bridge |
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| CN114538252B (en) * | 2022-01-18 | 2024-02-06 | 广东省特种设备检测研究院（广东省特种设备事故调查中心） | Traction steel wire rope wrap angle continuous adjusting device and adjusting method |
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