CN105035903B - A kind of elevator load test device and its test method - Google Patents
A kind of elevator load test device and its test method Download PDFInfo
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- CN105035903B CN105035903B CN201510543829.0A CN201510543829A CN105035903B CN 105035903 B CN105035903 B CN 105035903B CN 201510543829 A CN201510543829 A CN 201510543829A CN 105035903 B CN105035903 B CN 105035903B
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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 provides a kind of elevator load test device and its test method, belong to elevator detection technique field.It solves the problems, such as that existing elevator load detection is inconvenient.This elevator load test device, including hydraulic controller, display instrument and at least one hydraulic mandril, hydraulic mandril includes the hydraulic cylinder for being fixed in elevator hoistways on guide rail and is slidably connected at the support bar that hydraulic cylinder is interior and can stretch downwards, the free end of support bar is used to be resisted against elevator car roof, hydraulic controller is connected with hydraulic cylinder, it is connected with support bar for gathering pressure sensor of the support bar to lift car force data, display instrument and pressure sensor electrical connection.It accurately controls hydraulic mandril to be exerted a force from top to bottom to lift car and bears load come simulant elevator by hydraulic controller; it is capable of the load data of simple, fast and accurate acquisition elevator, suitable for overload protection device experiment, coefficient of balance experiment and static traction test.
Description
Technical field
The invention belongs to elevator detection technique field, is related to a kind of elevator load test device and its test method.
Background technology
With the development of the social economy, high building stands in great numbers, national elevator sum is with annual 20% or so speed drastically
Growth, the recoverable amount of the elevator in China, annual production, annual increment are respectively positioned on the first in the world.According to relevant laws and regulations of the state
Regulation and requirement, the installation and use of elevator be required for testing, elevator examine it is qualified after can just come into operation.So
And the slow checkability of the method for inspection sum lagged not only influences the sales volume of elevator, and serious threat uses to elevator
The passenger of process and the safety of carrying goods.Checkability is only improved constantly, just adapts to the growth situation of current elevator.Inspection
Need to do many measurement and experiment during testing.Wherein just include coefficient of balance experiment, the inspection, quiet of overload protection device
State traction test.These experiments are that most, largest in the number of people, most laborious several experiments are taken in whole checkout procedure.
And these experiments and checkout procedure, it is required for placing accurate experiment in lift car with load to obtain result of the test,
For the conclusion for judging to examine.But it is extremely difficult to carry out load test because field condition limits in practical operation.And
Using standard test weight as load also there is it is following the drawbacks of：1st, examine scene to be sometimes not suitable for the carrying of counterweight, carry
Load is very laborious；2nd, adjustment load all depends on manpower transport every time, and experiment process takes very long；3rd, because every piece of counterweight has admittedly
Fixed quality, quality of loads can not be finely adjusted during experiment；4th, the position difference that counterweight is stacked can influence the deflection of car
Direction, and overall stressing conditions, ultimately result in data result of the test it is repeated very poor；5th, existing instrumentation,
It can only be directed in an experiment and use every time, having changed another experiment can not just continue, so it is difficult to promoting；6th, survey indirectly
Amount is also influenceed by the several factors such as windage, the deviation of centre position mark, story height in live voltage, electric current, hoistway；
7th, all load concentrations can cause very big damage in car to the surface of car, the elevator especially decorate, once
Trim, which is scratched, can not just repair, to elevator be difficult carry out load test, user and maintenance staff are to load
Experiment has resentment.And the overload protection device on existing elevator is mostly using cable wire end magnetic induction way,
The overload protection device of this type is highly prone to the influence of two aspect factors：First, when just starting experiment, steel wire rope is not drawn
Stretch, once there is payload overload, be issued by overload signal.Subsequently, as personnel carry counterweight take it is long, when long on elevator
Between apply big load after, steel wire rope is gradually stretched, and elasticity changes after spring is compressed for a long time, magnetic induction feedback
There occurs some obvious changes for signal.So the data obtained after testing three times are substantially inconsistent.Second, carry the mistake of counterweight
Cheng Zhonghui is because the impulsive force passed in and out when counterweight is put down of personnel causes temporary transient overloading, plus the delay of inductor
Etc. factor, the load during overload signal finally occurred is exactly not necessarily real measured value.
How simple, fast and accurate acquisition test data, it is the biggest problem run into during current elevator is examined.
The content of the invention
First goal of the invention of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of elevator load
Test device, it can realize simple to elevator load data, fast and accurate measurement.
The purpose of the present invention can be realized by following technical proposal：A kind of elevator load test device, it is characterised in that
The test device includes hydraulic controller, display instrument and at least one hydraulic mandril, and the hydraulic mandril includes being used for admittedly
The hydraulic cylinder that is scheduled in elevator hoistways on guide rail and it is slidably connected at the support bar that can be stretched in hydraulic cylinder and downwards, the support
The free end of bar is used to be resisted against elevator car roof, and the hydraulic controller is connected with hydraulic cylinder, connects on the support bar
It is connected to for gathering pressure sensor of the support bar to lift car force data, the display instrument and pressure sensor are electrically connected
Connect.
The technical program accurately control hydraulic mandril to be exerted a force from top to bottom to lift car by hydraulic controller come
Simulant elevator bears load, and pressure sensor can gather the load data that support bar is applied to lift car and by aobvious
Show that instrument is shown, this test device is capable of the load data of simple, fast and accurate acquisition elevator, is protected suitable for overload
Protection unit experiment, coefficient of balance experiment and static traction test.
In above-mentioned elevator load test device, the quantity of the hydraulic mandril is two, and two hydraulic mandrils can be by
Hydraulic controller is individually or simultaneously controlled.Two hydraulic mandrils are symmetricly set on elevator car roof, are carrying out elevator load
During lotus testing experiment, pressure caused by hydraulic mandril can be concentrated on two points of lift car back timber, and the two points
Pressure value can intuitively be judged by observing the reading in display instrument, when two pressure value obvious deviations are larger
When, the one of pressure of control that can be manual continues to pressurize for less one time, and the larger one side of pressure stops pressurization, it is ensured that
The pressure ratio on lift car both sides is more uniform, avoids occurring surprisingly during experiment.
In above-mentioned elevator load test device, the hydraulic controller includes being used to control one of hydraulic mandril
The single upper switch one and single lower switch one of work, single upper switch two for controlling the work of another hydraulic mandril and single lower switch
Two and for the same upper switch for controlling the work of two hydraulic mandrils simultaneously and same lower switch.Two hydraulic mandrils are carried out single
Control solely or simultaneously, can be easy to be adjusted the pressure that two hydraulic mandrils apply, the standard of more preferable guarantee test data
True property.
In above-mentioned elevator load test device, under single upper switch one, single lower switch one, single upper switch two, list
Switch two, with upper switch and with lower switch it is touch switch.Upon its release, touch switch disconnects immediately, the security of experiment
Height, in addition, this hydraulic controller can also be by setting scram button come the security of guarantee test.
In above-mentioned elevator load test device, fastening security pincers, the fastening peace are connected with the hydraulic cylinder
Full pincers are connected in the top of hydraulic cylinder, and fastening security is clamped for being fixedly connected with the guide rail in elevator hoistways.In the technical program
Fastening security pincers be dynamic apparatus for lift, it has the advantages of easy to assemble, connectivity robustness is good, can be fixedly connected on guide rail
Optional position on, and its damage during experiment to guide rail is also smaller.
In above-mentioned elevator load test device, a hydraulic pump is provided between the hydraulic controller and hydraulic cylinder,
The hydraulic controller electrically connects with hydraulic pump, is connected between the hydraulic pump and hydraulic cylinder by oil inlet pipe with flowline,
The test device also includes a mobile flat car, and the hydraulic controller, hydraulic pump and display instrument are arranged at flat
On wooden handcart.Flat car is the dolly with roller, both make it that instrument carrying before the test is simpler quick, while testing
When the position of flat car can also be adjusted at any time, such as when installing hydraulic mandril, at flat car push away near elevator, when opening
When beginning to test, flat car can be pushed away elevator, with the safety of guarantee test personnel, in addition, the technical program Zhong Ge roads pipeline
Length be arranged at more than 2 meters, to ensure the security of testing crew.
In above-mentioned elevator load test device, the free end of the support bar is hinged with a pressing plate.Pressing plate can expand
The contact area of big support bar and lift car, avoids the force of support bar excessive and elevator car roof is caused to damage, this
Outside because pressing plate is hinged on the free end of support bar, it can be ensured that during experiment, even if lift car stress occurs partially
During shifting, pressing plate can also be fitted in elevator car roof, guarantee test accurate data constantly.
Second goal of the invention of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of elevator load
The overload protection test method of test device, it can conveniently and efficiently carry out the overload protection experiment of elevator, and gained is tested
Accurate data.
Second object of the present invention can be realized by following technical proposal：One kind utilizes above-mentioned elevator load test dress
The overload protection test method put, it is characterised in that comprise the steps of：
Step 1: being initially switched off elevator power supply, elevator is in on-position, then clamped by fastening security and consolidate hydraulic mandril
It is connected on guide rail；
Step 2: hydraulic mandril is pressurizeed so that support bar gradually extends, and compresses lift car, phase from top to bottom
Between observe lift car overload protection device whether send alarm signal；
Step 3: after overload protection device sends alarm signal, stop pressurizeing to hydraulic mandril, and record overload protection
The pressure reading that device is shown when sending alarm signal in each display instrument, then the pressure reading by the display in each display instrument
After addition compared with the rating number of overload protection device, judge whether overload protection device meets the requirement of inspection.
Hydraulic mandril exerts a force to lift car from top to bottom in the technical program, and during force, hydraulic mandril is gradual
Uniform pressurization is carried out, realizes that pressure controling precision is high, the nominal number of overload protection device kilogram to be pressurized for measurement unit
It kilogram be measurement unit that value, which can arrive precisely, and because pressure is gradually uniform increased, fastening security is clamped, guide rail and electricity
The impact of the steel wire rope of ladder is smaller, and beneficial to the elasticity recovery of elevator wire rope.
The 3rd goal of the invention of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of elevator load
The static traction test method of test device, it can conveniently and efficiently carry out the static traction test of elevator, and gained is tested
Accurate data.
Third object of the present invention can be realized by following technical proposal：One kind utilizes above-mentioned elevator load test dress
The static traction test method put, it is characterised in that comprise the steps of：
Step 1: being initially switched off elevator power supply, elevator is in on-position, then clamped by fastening security and consolidate hydraulic mandril
It is connected on guide rail；
Step 2: first setting the pressurization higher limit of hydraulic pump on hydraulic controller, then hydraulic mandril is pressurizeed, made
Obtain support bar gradually to extend, compress lift car from top to bottom, stop pressurization after persistent pressure to set pressurization higher limit；
Step 3: made marks on the traction steel-cable of guide rail or elevator, after 10 minutes, according to guide rail or traction steel-cable
On mark whether that displacement judges the traction steel-cable either with or without skidding.
Hydraulic mandril exerts a force to lift car from top to bottom in the technical program, and during force, hydraulic mandril is gradual
Uniform pressurization is carried out, realizes that pressure controling precision is high kilogram to be pressurized for measurement unit, and because pressure is gradually to increase
Adding, the impact to the steel wire rope of fastening security pincers, guide rail and elevator is smaller, and recovers beneficial to the elasticity of elevator wire rope, this
The pressurization higher limit of hydraulic pump is arranged to 1.25 times of the nominal load capacity or 1.5 of overload protection device in outer the technical program
Times, hydraulic pump pressurization can be avoided excessive and cause elevator to damage, and the static traction test in 10 minutes after stopping pressurizeing
During, due to now support bar motionless state of remains stationary under the hydraulic action of lasting fixation, if the steel wire of elevator
When rope has skidding tendency, lift car can move slightly downward so that and the top of lift car can be separated with support bar, from
And the pressure that support bar continues to act on downwards is lost, now lift car will not continue to move down, and steel wire rope also will not continue to
Skid, this test method can either test out the static traction data of elevator, will not occur to skid due to steel wire rope again and cause
The damage of elevator, security are more preferable.
The 4th goal of the invention of the present invention is above mentioned problem be present for existing technology, it is proposed that a kind of elevator load
The coefficient of balance test method of test device, it can conveniently and efficiently carry out the coefficient of balance experiment of elevator, and gained is tested
Accurate data.
Fourth object of the present invention can be realized by following technical proposal：One kind utilizes above-mentioned elevator load test dress
The coefficient of balance test method put, it is characterised in that comprise the steps of：
Step 1: being initially switched off elevator power supply, elevator is in on-position, then clamped by fastening security and consolidate hydraulic mandril
It is connected on guide rail；
Step 2: hydraulic mandril is pressurizeed so that support bar is gradually extended, and the bottom of support bar is just supported
The top of lift car is leaned against, unclamps the brake of elevator, the traction sheave of elevator is in the state that can be rotated freely；
Step 3: hydraulic mandril is pressurizeed so that support bar continues to extend, and compresses lift car from top to bottom, electricity
By after the pressure continued to increase, the reading in display instrument gradually increases terraced car；
Step 4: during to hydraulic mandril persistent pressure, when the counterweight of lift car and elevator is in poised state
When, the pressure reading of display instrument shakes change, the numerical intervals that record pressure reading shakes up and down up and down.
Hydraulic mandril exerts a force to lift car from top to bottom in the technical program, and during force, hydraulic mandril is gradual
Uniform pressurization is carried out, realizes that pressure controling precision is high kilogram to be pressurized for measurement unit, and because pressure is gradually to increase
Adding, the impact to the steel wire rope of fastening security pincers, guide rail and elevator is smaller, and recovers beneficial to the elasticity of elevator wire rope, this
The principle of test method is as follows, and when hydraulic mandril is more than the gravity of counterweight to the pressure of lift car, lift car can be downward
Trend that is mobile and having disengaging support bar downwards, then the pressure that lift car is born slightly is reduced, when lift car is pressurized
When power is less than the gravity of counterweight, lift car can relatively upward move and extrude support bar, cause display instrument again
Reading increases, and the numerical intervals that display instrument is shown are the numerical intervals of elevator coefficient.
Compared with prior art, the present invention has the following advantages that：
1st, this elevator load test device is simple in construction, easy to operate, and only can carry out overload guarantor by the present apparatus
Shield experiment, static traction test and balance ratio test；
2nd, this elevator load test device is manipulated by hydraulic power, is carried without conventional method Plays counterweight
Process, meanwhile, this elevator load test device carries flat car, time saving and energy saving without seeking extra handbarrow again；
3rd, this load test device at the trial, can be completed to test and reply zero load within the time quickly every time
State, the influence to steel wire rope and spring is smaller, and the test pressure of this load test device is slowly little by little to load,
Caused by impulsive force it is smaller, the measured value reflected is relatively accurate, data it is reproducible；
4th, the pressure of this load test device can be adjusted in real time by button, by kilogram in units of added
Pressure, i.e. display precision can reach 1 kilogram, and measurement accuracy is high；
5th, this load test device by fastening security pincers be fixed, that is, be avoided that lift car stress it is excessive and under
Pendant, and can realizes upper limit to lift car, avoid lift car due to counterweight mass is excessive and upward sliding, can be effectively
The risk during experiment is reduced, it is safe.
Brief description of the drawings
Fig. 1 is the scheme of installation of load test device in the present invention.
Fig. 2 is the structural representation of middle plateform car of the present invention.
Fig. 3 is the structural representation of hydraulic controller in the present invention.
Fig. 4 is the structural representation of display instrument in the present invention.
In figure, 1, hydraulic mandril；11st, hydraulic cylinder；12nd, support bar；13rd, pressing plate；2nd, hydraulic controller；21st, single upper switch
One；22nd, single lower switch one；23rd, single upper switch two；24th, single lower switch two；25th, same to upper switch；26th, same to lower switch；27th, start
Switch；28th, emergency stop switch；3rd, display instrument；31st, numerical value viewing area；32nd, set key；33rd, upper and lower adjusting key；34th, reset key；
35th, status display area；36th, data-interface；4th, lift car；41st, back timber 5, guide rail；6th, pressure sensor；7th, fastening security clamps；
8th, hydraulic pump；81st, oil inlet pipe；82nd, flowline；9th, flat car；91st, roller；92nd, handle.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Referring to Figures 1 and 2, the present invention is a kind of elevator load test device, test device include two hydraulic mandrils 1,
For manipulate hydraulic mandril 1 work hydraulic controller 2 and for show hydraulic mandril 1 exert a force information display instrument 3, two
Hydraulic mandril 1 is separately positioned on the top of the both ends end of back timber 41 of lift car 4.Hydraulic mandril 1 includes hydraulic cylinder 11 and slided
Dynamic to be connected to the support bar 12 that stretched in hydraulic cylinder 11 and downwards, there is a pressing plate free end of support bar 12 by hinge
13, the lower surface of pressing plate 13 can be fitted on the top surface of back timber 41, and the pressing plate 13 can expand connecing for support bar 12 and back timber 41
Contacting surface is accumulated, and avoids the force of support bar 13 excessive and the top of lift car 4 is caused to damage, additionally due to pressing plate 13 is hinged on branch
On the free end of strut 12, it can be ensured that during experiment, even if the stress of lift car 4 shifts, pressing plate 13 also can
Enough moment are fitted at the top of the back timber of lift car 4, guarantee test accurate data.It is connected with support bar 12 for gathering support
To the pressure sensor 6 of the force data of lift car 4, display instrument 3 and pressure sensor 6 electrically connect bar 12.On hydraulic cylinder 11
Fastening security pincers 7, the tops that fastening security pincers 7 are connected in hydraulic cylinder 11, and fastening security pincers 7 are connected with laterally to set and solid
It is connected on the guide rail 5 in elevator hoistways.Fastening security pincers 7 in the present embodiment are dynamic apparatus for lift, and it has easy to assemble, company
Connect the advantages of fastness is good, can be fixedly connected on the optional position of guide rail 5, and it during experiment to guide rail 5
Damage is also smaller.A hydraulic pump 8 is provided between hydraulic controller 2 and hydraulic cylinder 11, hydraulic controller 2 is electrically connected with hydraulic pump 8
Connect, be connected between hydraulic pump 8 and hydraulic cylinder 11 by oil inlet pipe 81 with flowline 82, oil inlet pipe 81 is connected to hydraulic mandril 1
Top, flowline 82 is connected to the bottom of hydraulic mandril 1.
Specific as follows, with reference to Fig. 2, test device also includes a mobile flat car 9, hydraulic controller 2, hydraulic pump 8
It is arranged at display instrument 3 on flat car 9, the quantity of display instrument 3 is two, corresponds respectively to two hydraulic mandrils 1, liquid
Pressure controller 2, hydraulic pump 8 due to quality it is larger, being placed on flat car 9 to be shifted over.Flat car 9 has the He of roller 91
Pushing hands 92, can easily it be carried.
With reference to Fig. 3, hydraulic controller 2 includes single upper switch 1, single lower switch 1, single upper switch 2 23, Dan Xiakai
Close 2 24, with upper switch 25, with lower switch 26, starting switch 27 and emergency stop switch 28, single upper switch 1 and single lower switch one
22 are used to control the hydraulic mandril 1 in left side to work, and single upper switch 2 23 and single lower switch 2 24 are used for the hydraulic top for controlling right side
Bar 1 works, and is used to control two hydraulic mandrils 1 to work simultaneously with upper switch 25 and with lower switch 26, starting switch 27 is used to control
Hydraulic pump 8 processed works, and emergency stop switch 28 is used for the power of fast shut-off hydraulic system, support bar 12 is not being extended, and ensures electricity
Ladder is without departing from trial stretch.Single upper switch 1, single lower switch 1 in the present embodiment, single upper switch 2 23, Dan Xiakai
Close 2 24, with upper switch 25 and with lower switch 26 be the touch switch for needing larger pressure just to press, upon its release, point touches
Switch disconnect immediately, experiment it is safe.
With reference to Fig. 4, there is numerical value viewing area 31, set key 32, upper and lower adjusting key 33, reset key 34, shape in display instrument 3
State viewing area 35 and data-interface 36, numerical value viewing area 31 are used to show pressure reading, and set key 32 is used for display instrument 3
Function is selected, and upper and lower adjusting key 33 is used for the numerical value for adjusting pressurization higher limit, and reset key 34 is used for numerical value viewing area 31
Reading reset, the result of guarantee test is accurate, status display area 35 be used for pressure sensor 6 working condition, including power supply,
Stable, early warning and overload etc..
The present embodiment can be used for the overload protection of elevator to test, and the test method comprises the steps of：
Step 1: emptying all unrelated personnel and goods on elevator, the electrical source of power of elevator is cut off, it is ensured that elevator is in
On-position, then two hydraulic mandrils 1 are respectively fixedly connected in elevator hoistways two by fastening security pincers 7 and symmetrically arranged led
On rail 5；
Step 2: hydraulic mandril 1 is pressurizeed so that support bar 12 gradually extends, and compresses lift car from top to bottom
4, whether the overload protection device during which observed in lift car 4 sends alarm signal；
Step 3: after overload protection device sends alarm signal, stop pressurizeing to hydraulic mandril 1, and record overload and protect
The pressure reading that protection unit is shown when sending alarm signal in each display instrument 3, then the pressure by the display in each display instrument 3
After reading addition compared with the rating number of overload protection device, judge whether overload protection device meets the requirement of inspection.
Hydraulic mandril 1 exerts a force to lift car 4 from top to bottom in the present embodiment, and during force, hydraulic mandril 1 is gradual
Uniform pressurization is carried out, realizes that pressure controling precision is high, the nominal number of overload protection device kilogram to be pressurized for measurement unit
It kilogram be measurement unit that value, which can arrive precisely, and because pressure is gradually uniform increased, 7, guide rail and 5 is clamped to fastening security
The impact of the steel wire rope of elevator is smaller, and beneficial to the elasticity recovery of elevator wire rope so that test data is more accurate.
The calculation formula of this test method is：G=p1+p2.
Wherein p1 and p2 is respectively the pressure reading of two display instruments 3, and measurement unit is kilogram.G is result of the test, i.e.,
For the rating number of elevator overload protecting device, measurement unit is kilogram.
The present embodiment can be used for the static traction test of elevator, and the test method comprises the steps of：
Step 1: emptying all unrelated personnel and goods on elevator, the electrical source of power of elevator is cut off, it is ensured that elevator is in
On-position, then two hydraulic mandrils 1 are respectively fixedly connected in elevator hoistways two by fastening security pincers 7 and symmetrically arranged led
On rail 5；
Step 2: starting hydraulic control 2, and the pressurization higher limit of hydraulic pump 8, the pressurization are set on hydraulic controller 2
Higher limit is equal to 1.25 times or 1.5 times of elevator nominal load capacity, then hydraulic mandril 1 is pressurizeed again so that support bar
12 gradually elongations, lift car 4 is compressed from top to bottom, stops pressurization after persistent pressure to set pressurization higher limit；
Step 3: made marks on the traction steel-cable of guide rail 5 or elevator, after 10 minutes, according to guide rail 5 or traction steel wire
Mark whether displacement on rope to judge traction steel-cable either with or without skidding.
Hydraulic mandril 1 exerts a force to lift car 4 from top to bottom in the technical program, during force, hydraulic mandril 1 by
Progressive row uniform pressurization, realize that pressure controling precision is high kilogram to be pressurized for measurement unit, and because pressure is gradual
Increased, the impact to the steel wire rope of fastening security pincers 7, guide rail and 5 elevators is smaller, and beneficial to the elastic extensive of elevator wire rope
It is multiple, the pressurization higher limit of hydraulic pump 8 is arranged to 1.25 times of the nominal load capacity of overload protection device in the technical program in addition
Or 1.5 times, hydraulic pump pressurization can be avoided excessive and cause elevator to damage, and the static traction in 10 minutes after stopping pressurizeing
During experiment, due to the now motionless state of remains stationary under the hydraulic action of lasting fixation of support bar 12, if elevator
Steel wire rope have skid tendency when, lift car 4 can move slightly downward so that the top meeting of lift car 4 and support bar
12 are separated, and so as to lose the pressure that support bar 12 continues to act on downwards, now lift car 4 will not continue to move down, steel
Cord also will not continue to skid, and this test method can either test out the static traction data of elevator, again will not be due to steel wire rope
Occur to skid and cause the damage of elevator, security is more preferable.
The present embodiment can be used for the coefficient of balance test method of elevator, and the test method comprises the steps of：
Step 1: emptying all unrelated personnel and goods on elevator, the electrical source of power of elevator is cut off, it is ensured that elevator is in
On-position, then two hydraulic mandrils 1 are respectively fixedly connected in elevator hoistways two by fastening security pincers 7 and symmetrically arranged led
On rail 5；
Step 2: hydraulic mandril 1 is pressurizeed so that support bar 12 gradually extends, and causes the bottom of support bar 12
The top of lift car 4 is just resisted against, after two display instruments 3 show equal pressure reading, unclamps the braking of elevator
Device, the traction sheave of elevator is set to be in the state that can be rotated freely；
Step 3: two hydraulic mandrils 1 are pressurizeed so that two support bars 12 continue to extend, and compress from top to bottom
Lift car 4, by after the pressure continued to increase, the reading in display instrument 3 gradually increases lift car 4；
Step 4: during to the persistent pressure of hydraulic mandril 1, when lift car 4 and counterweight are in poised state, two
The change of concussion up and down of individual display instrument 3, the number range of two pressure readings of display instrument 3 is recorded, by two display instruments 3
Pressure reading is averaged, you can obtains the numerical intervals of the coefficient of balance of elevator.
The present embodiment has the advantages of one-object-many-purposes, only can carry out overload protection by being mounted in described in the present embodiment
Device experiment, coefficient of balance experiment and static traction test, it is simple in construction, it is easy to operate, it is time saving and energy saving.
The present embodiment only enumerates the device form of two hydraulic mandrils 1, it is not excluded that using hydraulic mandril 1 or more
The hydraulic mandril 1 of quantity is tested, and when using a hydraulic mandril 1, the data measured by the hydraulic mandril 1 can be tested
Required numerical value, when use greater number of hydraulic mandril 1, then need by measured by each hydraulic mandril 1 data be added or
After phase average, you can obtain testing required numerical value.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of elevator load test device, it is characterised in that the test device includes hydraulic controller (2), display instrument
(3) and at least one hydraulic mandril (1), the hydraulic mandril (1) include being used for the liquid being fixed on guide rail in elevator hoistways (5)
Cylinder pressure (11) and it is slidably connected at the support bar (12) that can be stretched in hydraulic cylinder (11) and downwards, the freedom of the support bar (12)
Hold for being resisted against at the top of lift car (4), the hydraulic controller (2) is connected with hydraulic cylinder (11), the support bar
(12) it is connected with for gathering pressure sensor (6) of the support bar (12) to lift car (4) force data, the display instrument
Table (3) and pressure sensor (6) electrical connection.
2. elevator load test device according to claim 1, it is characterised in that the quantity of the hydraulic mandril (1) is
Two, and two hydraulic mandrils (1) can be individually or simultaneously controlled by hydraulic controller (2).
3. elevator load test device according to claim 2, it is characterised in that the hydraulic controller (2) includes using
In the single upper switch one (21) and single lower switch one (22) for controlling one of hydraulic mandril (1) work, for controlling another
Hydraulic mandril (1) work single upper switch two (23) and single lower switch two (24) and for simultaneously control two hydraulic mandrils
(1) the same to upper switch (25) and same lower switch (26) of work.
4. elevator load test device according to claim 3, it is characterised in that under single upper switch one (21), list
One (22) of switch, single upper switch two (23), single lower switch two (24), same to upper switch (25) and same lower switch (26), which are that point is tactile, to be opened
Close.
5. according to the elevator load test device described in claim 1 or 2 or 3 or 4, it is characterised in that the hydraulic cylinder (11)
On be connected with fastening security pincers (7), fastening security pincers (7) are connected in the top of hydraulic cylinder (11), and fastening security clamps
(7) it is used to be fixedly connected with the guide rail (5) in elevator hoistways.
6. according to the elevator load test device described in claim 1 or 2 or 3 or 4, it is characterised in that the hydraulic controller
(2) hydraulic pump (8) is provided between hydraulic cylinder (11), the hydraulic controller (2) electrically connects with hydraulic pump (8), described
It is connected between hydraulic pump (8) and hydraulic cylinder (11) by oil inlet pipe (81) with flowline (82), the test device also includes
One mobile flat car (9), the hydraulic controller (2), hydraulic pump (8) and display instrument (3) are arranged at flat car (9)
On.
7. elevator load test device according to claim 1 or 2, it is characterised in that the freedom of the support bar (12)
End is hinged with a pressing plate (13).
8. a kind of overload protection test method of elevator load test device using as described in claim any one of 1-7, its
It is characterised by, comprises the steps of：
Step 1: being initially switched off elevator power supply, elevator is in on-position, then (7) are clamped by hydraulic mandril (1) by fastening security
It is connected on guide rail (5)；
Step 2: hydraulic mandril (1) is pressurizeed so that support bar (12) gradually extends, and compresses lift car from top to bottom
(4) whether the overload protection device for, during which observing lift car (4) sends alarm signal；
Step 3: after overload protection device sends alarm signal, stop pressurizeing to hydraulic mandril (1), and record overload protection
The pressure reading that device is shown when sending alarm signal on each display instrument (3), then the pressure by the display in each display instrument (3)
After the addition of power reading compared with the rating number of overload protection device, judge whether overload protection device meets wanting for inspection
Ask.
9. a kind of static traction test method of elevator load test device using as described in claim any one of 1-7, its
It is characterised by, comprises the steps of：
Step 1: being initially switched off elevator power supply, elevator is in on-position, then (7) are clamped by hydraulic mandril (1) by fastening security
It is connected on guide rail (5)；
Step 2: first setting the pressurization higher limit of hydraulic pump (8) on hydraulic controller (2), then hydraulic mandril (1) is added
Pressure so that support bar (12) gradually extends, and compresses lift car (4), persistent pressure to the set pressurization upper limit from top to bottom
Stop pressurization after value；
Step 3: made marks on guide rail (5) or the traction steel-cable of elevator, after 10 minutes, according to guide rail (5) or traction steel wire
Mark whether displacement on rope to judge traction steel-cable either with or without skidding.
10. a kind of coefficient of balance test method of elevator load test device using as described in claim any one of 1-7, its
It is characterised by, comprises the steps of：
Step 1: being initially switched off elevator power supply, elevator is in on-position, then (7) are clamped by hydraulic mandril (1) by fastening security
It is connected on guide rail (5)；
Step 2: hydraulic mandril (1) is pressurizeed so that support bar (12) gradually extends, and causes the bottom of support bar (12)
End is just resisted against the top of lift car (4), unclamps the brake of elevator, the traction sheave of elevator is in and can be rotated freely
State；
Step 3: hydraulic mandril (1) is pressurizeed so that support bar (12) continues to extend, and compresses lift car from top to bottom
(4), by after the pressure continued to increase, the reading in display instrument (3) gradually increases lift car (4)；
Step 4: during to hydraulic mandril (1) persistent pressure, when the counterweight of lift car (4) and elevator is in equilibrium-like
During state, the pressure reading of display instrument (3) shakes change, the numerical intervals that record pressure reading shakes up and down up and down.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112660954A (en) * | 2020-12-17 | 2021-04-16 | 广东省特种设备检测研究院东莞检测院 | Loading module, elevator safety protection device performance detection system and method |
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| CN106441827B (en) * | 2016-08-03 | 2019-03-01 | 深圳市特种设备安全检验研究院 | Elevator instantaneous safety pliers test method and its experimental rig |
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| CN106698128B (en) * | 2016-11-30 | 2020-09-08 | 四川省特种设备检验研究院 | Overload measuring system and method for unloaded elevator |
| CN107902511B (en) * | 2017-11-07 | 2019-04-19 | 王梦梦 | A kind of detection device of elevator lift car load limit value |
| CN109748168B (en) * | 2019-01-16 | 2020-08-07 | 安徽中科智能高技术有限责任公司 | No-load testing device and method for 1.25-time braking test of traction elevator |
| CN109809269A (en) * | 2019-02-22 | 2019-05-28 | 耿延庆 | A kind of elevator load testing machine |
| CN110104519B (en) * | 2019-05-29 | 2021-05-18 | 胡战生 | Detection device for mechanically detecting accidental movement of elevator car |
| CN110668279B (en) * | 2019-09-24 | 2023-10-31 | 湖州市特种设备检测研究院 | Elevator traction force detection robot and detection method thereof |
| CN113493151A (en) * | 2020-03-20 | 2021-10-12 | 东莞市方运智能技术有限公司 | Intelligent vertical elevator load test device and test method |
| CN114030962B (en) * | 2021-11-29 | 2024-05-28 | 成都市特种设备检验检测研究院 | Elevator non-load measuring instrument |
| CN114751277A (en) * | 2022-04-19 | 2022-07-15 | 日立电梯（中国）有限公司 | Balanced rescue system of elevator and elevator |
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| JPH06255926A (en) * | 1993-03-05 | 1994-09-13 | Hitachi Building Syst Eng & Service Co Ltd | Watch device for elevator balance device |
| CN101537955A (en) * | 2009-04-30 | 2009-09-23 | 北京市朝阳区特种设备检测所 | Elevator non-load traction capacity detecting method |
| CN204917503U (en) * | 2015-08-28 | 2015-12-30 | 台州市中奥特种设备检测技术服务有限公司 | Elevator load testing arrangement |
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| CN112660954A (en) * | 2020-12-17 | 2021-04-16 | 广东省特种设备检测研究院东莞检测院 | Loading module, elevator safety protection device performance detection system and method |
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