CN107445003B - Elevator load test combinations replace loading system and test method - Google Patents
Elevator load test combinations replace loading system and test method Download PDFInfo
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- CN107445003B CN107445003B CN201710646233.2A CN201710646233A CN107445003B CN 107445003 B CN107445003 B CN 107445003B CN 201710646233 A CN201710646233 A CN 201710646233A CN 107445003 B CN107445003 B CN 107445003B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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Abstract
The invention discloses a kind of elevator load test combinations to replace loading system, including cable drum, folding and unfolding wire rope device, friction stopping device, electromagnetic torque compensation device and Radio test and control apparatus, folding and unfolding wire rope device, friction stopping device and electromagnetic torque compensation device are each attached on pedestal, electromagnetic torque compensation device is arranged in parallel in the sides adjacent of folding and unfolding wire rope device, and folding and unfolding wire rope device is connect with friction stopping device, electromagnetic torque compensation device respectively.The invention also discloses elevator load test methods, the following steps are included: 1) preset friction pulley pretightning force, 2) pass to lift car after frictional resistance moment and the superposition of electromagnetic resistance square when lift car uplink, 3) rope closing speed and lift car downstream rate are consistent when lift car downlink.Combination of the invention for loading system compensate for friction stopping device cannot accurate control load the shortcomings that；Test method can accurate control load, compensate for elevator load test behaviour load blank.
Description
Technical field
Loading system and method are replaced the present invention relates to a kind of test of elevator load, and in particular to a kind of to test in elevator load
Loading system and test method are replaced in the middle electromagnet-friction combination for replacing traditional loading method, belong to elevator experimental technique field.
Background technique
As the pace of construction of Re-search on Urbanization is constantly accelerated, real estate flourishes, and skyscraper is more and more,
Unprecedented opportunities are provided to the development of elevator industry.By the end of the year 2014, China's elevator total amount up to 3,600,000, and
With annual 20% or so speed increase, elevator ownership, annual output, annual increment is the first in the world.To guarantee every electricity
Ladder can be reliable, accurate, stable operation, the elevators for having a large amount of new peaces to turn daily are tested, most important one
It is exactly load test.Elevator load test has following several:
(1) traction capacity is tested: containing under coefficient of balance test, unloaded uplink test, static test, 125% rated load
Stop is tested by force.
(2) safety test: contain limiter of speed-safety tongs action test.
(3) operational reliability is tested: speed of service test, operation test, overload test etc..
(4) overall performance detection confirmation: there are the locking of layer door and the inspection of electric safety device, leveling accuracy detection, make an uproar
Emergency set functional check the etc. when measurement of sound, the inspection of warning device and power interruptions.
Traditional loading method has following several in load test: 1, being loaded using standard test weight, this loading method consumption
Take a large amount of manpower and material resources, and inefficiency.2, enter elevator after weighing using field test personnel as load, this load
There are security risks to testing crew for mode.
The Chinese invention patent of ZL201410110460.X discloses a kind of " elevator weighing based on pliers type lever mechanism
Device new detecting method ", this method applies clamping force to cage bottom using pliers type lever mechanism, to realize in elevator car
Compartment bottom applies simulation load.But the method is static load, be only applicable to elevator it is static when load.
The Chinese invention patent application prospectus of number of patent application 201510543829.0 discloses a kind of " elevator load
Load testing device and its test method ", this method accurately control hydraulic mandril from top to bottom to elevator car by hydraulic controller
Compartment applies force to simulant elevator borne load, obtains the load data of elevator, is suitable for overload protection device test, balance system
Number test and static traction test.But what it applied is equally static load, can not achieve and loads in elevator motion.
In conclusion traditional loading method expends a large amount of manpowers, to testing crew, there are security risks, cannot be in elevator
Apply constant load in movement.Seriously constrain the efficiency that elevator is examined, safeguarded.
Summary of the invention
Loading system and test are replaced the object of the present invention is to provide a kind of precision height, convenient for the elevator load test combinations of detection
Method improves the checkability of elevator.
The present invention is achieved by the following technical programs:
A kind of elevator load test combinations replace loading system, including cable drum, folding and unfolding wire rope device, friction catch to fill
It sets, electromagnetic torque compensation device, pedestal and Radio test and control apparatus, the folding and unfolding wire rope device, friction stopping device and electromagnetism
Torque compensator is each attached on pedestal, and electromagnetic torque compensation device is arranged in parallel in the sides adjacent of folding and unfolding wire rope device,
Folding and unfolding wire rope device is connected with electromagnetic torque compensation device, and friction stopping device is fixedly connected with folding and unfolding wire rope device；
The folding and unfolding wire rope device includes driving mechanism, cable drum and ratchet mechanism, and driving mechanism includes rope closing
Motor, pinion gear and large gear ring, cable drum include spool body and support shaft, and the spool body is supported in support shaft；
Rope closing motor is variable-frequency motor, and rope closing motor output shaft one end is fixedly connected with pinion gear, and large gear ring is fixed on spool body
On the end face of one end, pinion gear is engaged with large gear ring；Support shaft both ends pass through cable drum bearing seat supports in pedestal respectively
On one end, the pedestal is fixed in elevator shaft pit；Ratchet mechanism is arranged in one end end face center of spool body；
One end end of the support shaft is fixedly connected by first shaft coupling with friction stopping device one end, support shaft
Other end end is connected by chain-drive mechanism with electromagnetic torque compensation device one end.
Further, the friction stopping device includes friction pulley, friction wheel axle, a pair of arc-shaped pressing plate and two pairs of circular arcs
Shape friction shoe, friction pulley are fixedly connected with friction wheel axle, and friction wheel axle both ends pass through friction wheel axle bearing block respectively and are supported on bottom
On the seat other end；Two pairs of arc-shaped friction shoes are fixed on side by side on the medial surface of the corresponding arc-shaped pressing plate of a pair, circular arc
Shape pressing plate both ends each extend over water outlet concora crush side, and a pair of arc-shaped pressing plate passes through the pretension bolt spiral shell across corresponding horizontal flanging
Female group is pressed in two pairs of arc-shaped friction shoes on the inside of arc-shaped pressing plate on the outer peripheral surface of friction pulley one on the other,
Further, the ratchet mechanism includes ratchet circle and pawl, and ratchet circle is fixed on spool body away from canine tooth
In the other end face of wheel rim, pawl upper end is put between the ratchet of ratchet circle, and pawl lower end passes through swivel pin and support shaft shoulder
Hingedly.
Further, the material of the friction pulley is cast iron, and the material of arc-shaped friction shoe is ceramics.
Further, the electromagnetic torque compensation device includes retarder, magnetic powder brake and pillar tension sensor, institute
It states retarder and magnetic powder brake is separately fixed on pedestal, be fixedly connected by second shaft coupling；Wirerope upper end and elevator
Pillar tension sensor is concatenated after cage bottom connection, wirerope lower end is wrapped on cable drum；The of chain-drive mechanism
One sprocket wheel is fixed on the end of support shaft, and the second sprocket wheel is fixed on the end of retarder, and the first sprocket wheel and the second sprocket wheel are logical
Cross transmission chain linking.
Further, the Radio test and control apparatus includes wireless singlechip I, wireless singlechip II and elevator speed meter, institute
It states wireless singlechip I to be mounted in pillar tension sensor, wireless singlechip II and elevator speed meter are mounted on the base；Wirelessly
Single-chip microcontroller II is connect with the current regulator of the frequency converter of rope closing motor, magnetic powder brake respectively by corresponding signal wire.
Further, the load that friction stopping device undertakes accounts for the 85~90% of elevator load, and electromagnetic torque compensator is held
The load of load accounts for the 10~15% of elevator load.
A kind of elevator load test combinations replace the test method of loading system, comprising the following steps:
1) preset friction pulley pretightning force
After the completion of preparation before elevator load is tested, each pretension bolt is tightened by required torque using torque wrench
The pre-load nut of lower end, so that the arc-shaped friction shoe pressing friction wheel on the inside of arc-shaped pressing plate；Arc-shaped friction shoe and friction
Frictional force is a part of load needed for elevator load is tested between wheel；
2) each electronic device is separately turned on before ascending for elevator
Elevator speed meter, wireless singlechip I, wireless singlechip II and the respective power supply of pillar tension sensor is opened to open
It closes；
3) lift car is passed to after frictional resistance moment and the superposition of electromagnetic resistance square when lift car uplink
Start lift car upstream switch, the wirerope uplink of lift car uplink, lift car bottom pulls spool body
Rotation, while driving support shaft to rotate together with spool body by the ratchet mechanism at spool body one end end center；Support shaft one
End drives friction pulley rotation, and frictional force is load needed for elevator load is tested between arc-shaped friction shoe and friction pulley at this time
A part；Support shaft other end end drives retarder rotation by chain-drive mechanism, and retarder drives magnetic powder brake rotation；
The direction of transfer of load are as follows: the rubbed brake apparatus of frictional resistance moment is transmitted on spool body all the way, another way electromagnetic resistance square
It is generated by magnetic powder brake, is transmitted to spool body after retarder matches load and chain-drive mechanism changes torque direction of transfer
On；The superimposed tensile load of two-way torque is through in wire rope transfers to lift car；
4) rope closing speed and lift car downstream rate are consistent when lift car downlink
Start lift car downing switch, lift car downlink, elevator speed meter detects that lift car downstream rate is believed
Number through A/D sampling and wireless singlechip II handle after, wirelessly sender gives rope closing motor frequency conversion to wireless singlechip II
Device adjusts the frequency of rope closing motor inverter, is consistent the rope closing speed of rope closing motor and lift car downstream rate, directly
It is finished to rope closing, then elevator load off-test.
Further, in step 3) the following steps are included:
3.1) when lift car uplink, pillar tension sensor tension, wireless singlechip I is by the drawing of pillar tension sensor
Wirelessly sender is to wireless singlechip II for power load value, after wireless singlechip II receives pulling force signal, calculates institute
State practical drag load suffered by wirerope；
3.2) by calculating real load and required load compared with the elevator load set in program tests required load
Difference between lotus；
3.3) wireless singlechip II changes current regulation in magnetic powder brake by the size of the current signal received
The size of current of device, to change the size of magnetic powder brake output torque, compensation because coefficient of friction and for loading system it is other because
Element variation bring load dynamic change, makes to remain unchanged for carrying the load set and be added on lift car；Magnetic powder brake
Output torque can change with curent change, and the load for keeping system total remains unchanged.
Elevator load test combinations of the invention for loading system by friction stopping device can undertake elevator load 85~
90% load, and the load can be adjusted by adjusting the pretightning force between friction shoe and friction pulley.Utilize magnetic powder brake
Superior automatic control characteristic, a combination thereof for loading system output torque it is linear and unrelated with revolving speed with exciting current, match
Close Radio test and control apparatus, constitute combination for loading system, can real-time compensation test needed for difference between load and real load,
Compensate for friction stopping device cannot accurate control load the shortcomings that.And gross weight is no more than 150kg, it is light-weight and easy to carry,
It avoids carrying a large amount of manpower and material resources of counterweight consuming, improves elevator detection efficiency.Test method of the invention realizes elevator fortune
Dynamically load during row, and its load flexibly, can be controlled accurately, compensate for the sky of elevator load test behaviour load
It is white.
The advantages and features of the present invention will be illustrated and explained by the non-limitative illustration of preferred embodiment below,
These embodiments only provide as an example referring to attached drawing.
Detailed description of the invention
Fig. 1 is elevator load test combinations of the invention for loading system structural schematic diagram；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the structural schematic diagram of friction stopping device；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the signal transmitting schematic diagram of Radio test and control apparatus；
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As depicted in figs. 1 and 2, elevator load test combinations of the invention include folding and unfolding wire rope device 2, rub for loading system
Wipe brake apparatus 3, electromagnetic torque compensation device 4, pedestal 5 and Radio test and control apparatus 6, folding and unfolding wire rope device 2, friction catch dress
Set 3 and electromagnetic torque compensation device 4 be each attached on pedestal 5, electromagnetic torque compensation device 4 be arranged in parallel in folding and unfolding wirerope dress
2 sides adjacent is set, folding and unfolding wire rope device 2 and electromagnetic torque compensation device 4 connect, friction stopping device 3 and folding and unfolding wirerope
Device 2 is fixedly connected.
Folding and unfolding wire rope device 2 includes driving mechanism 21, cable drum 22 and ratchet mechanism 23, and driving mechanism 21 includes
Rope closing motor 211, pinion gear 212 and large gear ring 213, cable drum 22 include spool body 221 and support shaft 222, reel
Body 221 is supported in support shaft 222, and rope closing motor 211 is variable-frequency motor, 214 one end of rope closing motor output shaft and pinion gear 212
It is fixedly connected, large gear ring 213 is fixed on the left end end face of spool body 221, and pinion gear 212 is engaged with large gear ring 213.Branch
Support 222 both ends of axis pass through cable drum bearing seat 223 respectively and are supported on 5 left end of pedestal, and pedestal 5 is fixed on elevator shaft bottom
On hole.Ratchet mechanism 23 is arranged in the left end end face center of spool body 221, is located within large gear ring 213, including ratchet
Circle 231 and pawl 232, ratchet circle 231 are fixed in the left end end face center of spool body 221, and 232 upper end of pawl puts in ratchet circle
Between 231 ratchet, 232 lower end of pawl is hinged by swivel pin 233 and support shaft shoulder 2221.
The right end end of support shaft 222 is fixedly connected by first shaft coupling 24 with 3 left end of friction stopping device, support shaft
222 left end end is connected by chain-drive mechanism 7 with electromagnetic torque compensation device left end.
As shown in Figure 3 and Figure 4, friction stopping device 3 includes friction pulley 31, friction wheel axle 32, a pair of arc-shaped pressing plate 33
With two pairs of arc-shaped friction shoes 34, the material of friction pulley 31 is cast iron, and the material of arc-shaped friction shoe 34 is wear-resisting ceramics.It rubs
It wipes wheel 31 and is fixedly connected with friction wheel axle 32 by flat key 35,32 both ends of friction wheel axle pass through friction wheel axle bearing block 36 respectively
Support is on the right end of pedestal 5.Two pairs of arc-shaped friction shoes 34 are fixed on the interior of the arc-shaped pressing plate 33 of corresponding a pair side by side
On side, arc-shaped 33 both ends of pressing plate each extend over water outlet concora crush side 331, and a pair of arc-shaped pressing plate 33 is by passing through corresponding water
The pretension bolt nut group 37 on concora crush side 331 presses two pairs of arc-shaped friction shoes 34 of arc-shaped 33 inside of pressing plate one on the other
On the outer peripheral surface of friction pulley 31.
As shown in Figure 1, electromagnetic torque compensation device 4 includes retarder 41, magnetic powder brake 42 and pillar tension sensor
43, retarder 41 and magnetic powder brake 42 are separately fixed on pedestal 5, are fixedly connected by second shaft coupling 44.On wirerope 8
End concatenates pillar tension sensor 43 after connecting with 10 bottom of lift car, and 8 lower end of wirerope is wrapped on cable drum 22.
The wirerope 8 of the present embodiment is Special elevator steel wire rope.First sprocket wheel 71 of chain-drive mechanism 7 is fixed on the end of support shaft 222
On head, the second sprocket wheel 72 is fixed on the end of retarder 41, and the first sprocket wheel 71 and the second sprocket wheel 72 are connected by transmission chain 73,
It is transmitted in electromagnetic torque compensation device 4 when 10 uplink of lift car by the torque that wirerope 8 drives spool body 221 to rotate.
In the present embodiment, the load that friction stopping device 3 undertakes accounts for the 90% of elevator load, the load that electromagnetic torque compensator 4 undertakes
Lotus accounts for the 10% of elevator load.The uniaxial output type magnetic powder brake of the present embodiment magnetic powder brake 42, pillar tension sensor
43 use S type pillar pull pressure sensor.
As shown in Figure 2 and Figure 5, Radio test and control apparatus 6 includes wireless singlechip I 61, wireless singlechip II 62 and elevator speed
Degree meter 63, wireless singlechip I 61 is mounted in pillar tension sensor 43, and wireless singlechip II 62 and elevator speed meter 63 are installed
On pedestal 5.Wireless singlechip II 62 by corresponding signal wire respectively with the frequency converter 2111 of rope closing motor 211, magnetic powder system
The current regulator 421 of dynamic device 42 connects.Elevator speed meter 63 is used to detect the speed of terraced 10 upstream or downstream of carriage, and will adopt
The data of collection pass to wireless singlechip II 62.Wireless singlechip I 61 sends a signal to wireless singlechip II 62, Wireless monolithic
Machine II 62 changes the size of current of current regulator 421 in magnetic powder brake 42, so that the output for changing magnetic powder brake 42 is turned round
Square.Compensation changes bring load dynamic change because of coefficient of friction and for loading system other factors in this way, makes to replace to carry to set to be added to
Load on lift car 10 is remained unchanged.The current control method of above-mentioned current regulator 421 uses the control of PID closed loop feedback
System, real-time, accuracy are good, can further improve the stability of load.
A kind of elevator load test combinations replace the test method of loading system, comprising the following steps:
1) preset 31 pretightning force of friction pulley
After the completion of preparation before elevator load is tested, each pretension bolt is tightened by required torque using torque wrench
The pre-load nut 372 of 371 lower ends, so that the 34 pressing friction wheel 31 of arc-shaped friction shoe of 33 inside of arc-shaped pressing plate, arc rubs
Wipe a part that frictional force watt between 34 and friction pulley 31 is load needed for elevator load is tested.The present embodiment friction catch dress
The frictional force for setting 3 is the 90% of elevator load
2) each electronic device is separately turned on before ascending for elevator
It is respective to open elevator speed meter 63, wireless singlechip I 61, wireless singlechip II 62 and pillar tension sensor 43
Power switch；
3) lift car 10 is passed to after frictional resistance moment and the superposition of electromagnetic resistance square when 10 uplink of lift car
Start 10 upstream switch of lift car, 8 uplink of wirerope of 10 uplink of lift car, 10 bottom of lift car pulls
Spool body 221 rotates, while driving support shaft 222 with spool body by the ratchet mechanism 23 at 221 left end end center of spool body
221 rotate together, and 222 right end of support shaft drives friction pulley 31 to rotate by first shaft coupling 24, at this time arc-shaped friction shoe 34
Frictional force is a part of load needed for elevator load is tested between friction pulley 31.222 left end end of support shaft passes through chain
Transmission mechanism 7 drives retarder 41 to rotate, and retarder 41 drives magnetic powder brake 42 to rotate by second shaft coupling 44.Load
Direction of transfer are as follows: the rubbed brake apparatus 3 of frictional resistance moment is transmitted on spool body 221 all the way, another way electromagnetic resistance square by
Magnetic powder brake 42 generates, and is transmitted to reel after retarder 41 matches load and chain-drive mechanism 7 changes torque direction of transfer
On body 221；The superimposed tensile load of two-way torque is through in wire rope transfers to lift car 10.
3.1) when lift car uplink, pillar tension sensor tension, wireless singlechip I wirelessly sender to nothing
Line single-chip microcontroller II after wireless singlechip II receives pulling force signal, calculates practical drag load suffered by the wirerope 8.
3.2) by calculating real load and required load compared with the elevator load set in program tests required load
Difference between lotus.
3.3) wireless singlechip II 62 changes electric current in magnetic powder brake 42 by the size of the current signal received
The size of current of adjuster 421, to change the size of 42 output torque of magnetic powder brake, compensation is because of coefficient of friction and for carrying
Other factors of uniting change bring load dynamic change, make to remain unchanged for carrying the load set and be added on lift car 10, magnetic
The output torque of powder brake can change with curent change, and the load for keeping system total remains unchanged.
4) rope closing speed and 10 downstream rate of lift car are consistent when 10 downlink of lift car
Start lift car downing switch, 10 downlink of lift car, elevator speed meter 63 detects 10 downlink of lift car
Speed signal is after A/D is sampled and wireless singlechip II 62 is handled, and wirelessly sender gives receipts to wireless singlechip II 62
Rope motor inverter 2111, adjusts the frequency of rope closing motor inverter 2111, makes the rope closing speed and elevator car of rope closing motor 211
10 downstream rate of compartment is consistent, until rope closing finishes, then elevator load off-test.
The rotation of 211 driving pinion 212 of rope closing motor, drives the large gear ring being engaged with 213 to rotate clockwise, thus
It drives spool body 221 to rotate clockwise and receives wirerope 8, due to the single-direction transmission characteristic of ratchet mechanism 23, spool body 221 is clockwise
When rotation, support shaft 222 is not rotated, and the friction pulley 31 and retarder 41 connecting with support shaft 222 also do not rotate, thus significantly
Reduce the power of rope closing motor 211.
Although the present invention has been described herein as specific embodiment, the scope of the present invention is not limited thereto,
On the contrary, the present invention cover it is all literal upper or be substantially intended to fall within the scope of the appended claims under the introduction of equivalents
All technical solutions, protection scope of the present invention are subject to claims.
Claims (7)
1. a kind of elevator load test combinations replace loading system, which is characterized in that filled including folding and unfolding wire rope device, friction catch
It sets, electromagnetic torque compensation device, pedestal and Radio test and control apparatus, the folding and unfolding wire rope device, friction stopping device and electromagnetism
Torque compensator is each attached on pedestal, and electromagnetic torque compensation device is arranged in parallel in the sides adjacent of folding and unfolding wire rope device,
Folding and unfolding wire rope device is connected with electromagnetic torque compensation device, and friction stopping device is fixedly connected with folding and unfolding wire rope device；
The folding and unfolding wire rope device includes driving mechanism, cable drum and ratchet mechanism, driving mechanism include rope closing motor,
Pinion gear and large gear ring, cable drum include spool body and support shaft, and the spool body is supported in support shaft；Rope closing electricity
Machine is variable-frequency motor, and rope closing motor output shaft one end is fixedly connected with pinion gear, and large gear ring is fixed on one end end of spool body
On face, pinion gear is engaged with large gear ring；Support shaft both ends pass through cable drum bearing seat supports on pedestal one end respectively,
The pedestal is fixed in elevator shaft pit；Ratchet mechanism is arranged in one end end face center of spool body；
One end end of the support shaft is fixedly connected by first shaft coupling with friction stopping device one end, support shaft it is another
End end is connected by chain-drive mechanism with electromagnetic torque compensation device one end；
The friction stopping device includes friction pulley, friction wheel axle, a pair of arc-shaped pressing plate and two pairs of arc-shaped friction shoes, friction
Wheel is fixedly connected with friction wheel axle, and friction wheel axle both ends pass through friction wheel axle bearing block respectively and are supported on the pedestal other end；Two
Arc-shaped friction shoe is fixed on side by side on the medial surface of the corresponding arc-shaped pressing plate of a pair, arc-shaped pressing plate both ends difference
Extend horizontal flanging, a pair of arc-shaped pressing plate is by passing through the pretension bolt nut group of corresponding horizontal flanging for arc-shaped pressure
Two pairs of arc-shaped friction shoes on the inside of plate are pressed in one on the other on the outer peripheral surface of friction pulley；
The ratchet mechanism includes ratchet circle and pawl, and ratchet circle is fixed on the other end face that spool body deviates from large gear ring
On, pawl upper end is put between the ratchet of ratchet circle, and pawl lower end is hinged by swivel pin and support shaft shoulder.
2. elevator load test combinations as described in claim 1 replace loading system, which is characterized in that the material of the friction pulley is
Cast iron, the material of arc-shaped friction shoe are ceramics.
3. elevator load test combinations as described in claim 1 replace loading system, which is characterized in that the electromagnetic torque compensation dress
It sets including retarder, magnetic powder brake and pillar tension sensor, the retarder and magnetic powder brake are separately fixed at pedestal
On, it is fixedly connected by second shaft coupling；Wirerope upper end concatenates pillar tension sensor, steel after connecting with lift car bottom
Cord lower end is wrapped on cable drum；First sprocket wheel of chain-drive mechanism is fixed on the end of support shaft, the second sprocket wheel
It is fixed on the end of retarder, the first sprocket wheel and the second sprocket wheel are connected by transmission chain.
4. elevator load test combinations as described in claim 1 replace loading system, which is characterized in that the Radio test and control apparatus packet
Wireless singlechip I, wireless singlechip II and elevator speed meter are included, the wireless singlechip I is mounted in pillar tension sensor,
Wireless singlechip II and elevator speed meter are mounted on the base；Wireless singlechip II is electric with rope closing respectively by corresponding signal wire
The current regulator connection of the frequency converter, magnetic powder brake of machine.
5. elevator load test combinations as described in claim 1 replace loading system, which is characterized in that friction stopping device undertook
Load accounts for the 85~90% of elevator load, and the load that electromagnetic torque compensation device undertakes accounts for the 10~15% of elevator load.
6. the test method that a kind of elevator load test combinations as described in claim 1 replace loading system, which is characterized in that including
Following steps:
1) preset friction pulley pretightning force
After the completion of preparation before elevator load is tested, each pretension bolt lower end is tightened by required torque using torque wrench
Pre-load nut so that the arc-shaped friction shoe pressing friction wheel on the inside of arc-shaped pressing plate；Arc-shaped friction shoe and friction pulley it
Between frictional force be elevator load test needed for load a part；
2) each electronic device is separately turned on before ascending for elevator
Open elevator speed meter, wireless singlechip I, wireless singlechip II and the respective power switch of pillar tension sensor；
3) lift car is passed to after frictional resistance moment and the superposition of electromagnetic resistance square when lift car uplink
Starting lift car upstream switch, lift car uplink, the wirerope uplink of lift car bottom pulls spool body rotation,
Support shaft is driven to rotate together with spool body by the ratchet mechanism at spool body one end end center simultaneously；Support shaft one end drives
Friction pulley rotation, frictional force is one of load needed for elevator load is tested between arc-shaped friction shoe and friction pulley at this time
Point；Support shaft other end end drives retarder rotation by chain-drive mechanism, and retarder drives magnetic powder brake rotation；Load
Direction of transfer are as follows: the rubbed brake apparatus of frictional resistance moment is transmitted on spool body all the way, and another way electromagnetic resistance square is by magnetic
Powder brake generates, and is transmitted on spool body after retarder matches load and chain-drive mechanism changes torque direction of transfer；Two
Torque superimposed tensile load in road is through in wire rope transfers to lift car；
4) rope closing speed and lift car downstream rate are consistent when lift car downlink
Start lift car downing switch, lift car downlink, elevator speed meter detects that lift car downstream rate signal passes through
After A/D sampling and wireless singlechip II are handled, wirelessly sender gives rope closing motor inverter to wireless singlechip II, adjusts
The frequency of whole rope closing motor inverter is consistent the rope closing speed of rope closing motor and lift car downstream rate, until receiving
Rope finishes, then elevator load off-test.
7. the test method that elevator load test combinations as claimed in claim 6 replace loading system, which is characterized in that the step
3) in the following steps are included:
3.1) when lift car uplink, pillar tension sensor tension, wireless singlechip I bears the pulling force of pillar tension sensor
Wirelessly sender is to wireless singlechip II for charge values, after wireless singlechip II receives pulling force signal, calculates the steel
Practical drag load suffered by cord；
3.2) by compared with load needed for the elevator load that sets in program is tested, calculate real load and required load it
Between difference；
3.3) wireless singlechip II changes current regulator in magnetic powder brake by the size of the current signal received
Size of current, to change the size of magnetic powder brake output torque, compensation becomes because of coefficient of friction and for loading system other factors
Change bring load dynamic change, makes to remain unchanged for carrying the load set and be added on lift car；The output of magnetic powder brake
Torque can change with curent change, and the load for keeping system total remains unchanged.
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| CN108639885B (en) * | 2018-04-02 | 2019-08-27 | 江苏大学 | A kind of elevator load test electromagnet-friction combination broach two close cycles coupling control system and method |
| CN109855896B (en) * | 2019-01-22 | 2021-08-03 | 江苏大学 | Loading device test platform and method for elevator load test |
| CN110530621A (en) * | 2019-08-27 | 2019-12-03 | 苏州新达电扶梯部件有限公司 | A kind of escalator auxiliary brake torque test stand |
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| DE102007015648A1 (en) * | 2006-12-11 | 2008-06-12 | TÜV Nord Systems GmbH & Co. KG | Method and device for testing elevator installations |
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