CN105905720A - Elevator no-load balance coefficient detection device based on screw pulling-up - Google Patents

Elevator no-load balance coefficient detection device based on screw pulling-up Download PDF

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Publication number
CN105905720A
CN105905720A CN201610158430.5A CN201610158430A CN105905720A CN 105905720 A CN105905720 A CN 105905720A CN 201610158430 A CN201610158430 A CN 201610158430A CN 105905720 A CN105905720 A CN 105905720A
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CN
China
Prior art keywords
fixture block
screw mandrel
ladders
painting
elevator
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Granted
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CN201610158430.5A
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Chinese (zh)
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CN105905720B (en
Inventor
孙学礼
王伟雄
谢超
黄国健
蔡少林
彭启凤
何山
李刚
邓贤远
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Guangzhou Academy of Special Equipment Inspection and Testing
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Guangzhou Academy of Special Equipment Inspection and Testing
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006Monitoring devices or performance analysers
    • B66B5/0018Devices monitoring the operating condition of the elevator system

Abstract

The invention provides an elevator no-load balance coefficient detection device based on screw pulling-up, comprising an upper clamp, a lower clamp, a trapezoidal screw, a trapezoidal nut, and a force transducer. The upper clamp is used for clamping the upper part of a selected traction rope. The lower clamp is used for clamping the lower part of the selected traction rope. The trapezoidal screw can sleeve the upper clamp in an up-down movement mode. The trapezoidal nut sleeves the trapezoidal screw, and is disposed above the upper clamp. The force transducer is mounted between the trapezoidal screw and the lower clamp, and is used for measuring the pulling force between the trapezoidal screw and the lower clamp. According to the invention, a lifting device is replaced by a screw pulling-up device. In the use process, the screw pulling-up device can solve the problem that a hydraulic system load measuring device is of poor synchronization performance. Through use of the screw pulling-up device, the overall cost, overall size and overall weight are reduced.

Description

A kind of elevator no-load coefficient of balance detection device drawing high formula based on screw mandrel
Technical field
The invention belongs to elevator detection technique field, specifically, the present invention relates to a kind of elevator no-load coefficient of balance detection device drawing high formula based on screw mandrel.
Background technology
Coefficient of balance is the important performance indexes that traction-type drives elevator, is related to elevator running performance and hoisting motor output size.Between 2011 to 2013, the annual new clothes elevator of China is respectively as follows: 450,000,52.9 ten thousand, 600,000, in cumulative year after year trend, wherein, traction elevator accounts for more than 90%, and every every portion of the new elevator of traction-type all should be balanced the testing and debugging of coefficient, coefficient of balance qualified just allows to come into operation.It addition, user carries out decoration to elevator affects the change of coefficient of balance, it is necessary to be balanced redeterminating of coefficient.Therefore, coefficient of balance detection is that elevator industry one amount is big, wide, requires high technical work.But existing coefficient of balance detection method complex operation, error are big, have and more or less limit.
The coefficient of balance method of inspection is by having no-load to be divided into have the load method of inspection and the no-load method of inspection.The coefficient of balance detection method of existing elevator inspection rule and hand turning method are to have load method of inspection, and such method of inspection need to carry counterweight repeatedly, and labor intensity is big, and the detection activity duration is long.The coefficient of balance detection method of Anhui Special Equipment Test Inst of China research and development, the coefficient of balance detection method etc. of LiaoNing, China petrochemical industry university research and development are no-load method of inspection, but the aspect such as certainty of measurement, simple installation has restriction more or less, it is difficult in actual field application.
Chinese invention patent ZL201210121058 provides a kind of efficient, convenient, safe and reliable balance coefficient of elevator detection technique.But due to rope, pulley assembly, there is unreliability and the problems such as unbalance loading occur in it.Given this, the Chinese utility model patent of Patent No. ZL201420516482.1 provides a kind of elevator no-load coefficient of balance detection device, including upper fixture, hydraulic cylinder, lower clamp and pulling force sensor, described upper fixture is arranged on the top of described hydraulic cylinder, for clamping the top of selected traction ran;Described hydraulic cylinder, for realizing the lifting to described lower clamp;Described lower clamp, is arranged on the lower section of described hydraulic cylinder, for clamping the bottom of selected traction ran;Described pulling force sensor, for measuring the pulling force of described hydraulic cylinder.This utility model uses hydraulic cylinder as load-measuring device, take full advantage of the job stability of hydraulic cylinder and the feature of reliability, making this detection device have simple to operate and that safe operation process performance is high advantage, the measure data precision that hydraulic cylinder obtains simultaneously is higher.But in the method, the weight of oil pipe, also in pulling force sensor is measured, has certain impact to result;And, the method use for drawing high formula oil cylinder, this kind of oil cylinder Heavy Weight, volume is big, cost is high, and the length of cable installed is had higher requirement, limits the position of its measurement;Separated type hydraulic jack, oil pump, oil pipe volume are big, Heavy Weight, it has not been convenient to carry.
Summary of the invention
It is an object of the invention to provide a kind of elevator no-load coefficient of balance detection device drawing high formula based on screw mandrel, at least to solve the detection device of prior art due to rope, pulley assembly reason, there is the technical problem such as unreliability and unbalance loading, can solve the problem that the technical problem that detection installation weight is heavy, volume is big and cost is high in prior art simultaneously.
In order to solve the problems referred to above, the present invention provides a kind of elevator no-load coefficient of balance detection device drawing high formula based on screw mandrel, and its technical scheme is as follows:
A kind of elevator no-load coefficient of balance detection device drawing high formula based on screw mandrel, including upper fixture, lower clamp, ladders in painting screw mandrel, ladders in painting nut and force cell;
Described upper fixture, for clamping the top of selected traction ran;
Described lower clamp, for clamping the lower section of selected traction ran;
Described ladders in painting screw mandrel is moving up and down to be enclosed within described upper fixture;
Described ladders in painting nut sleeve is connected on described ladders in painting screw mandrel and is positioned at the top of described upper fixture;
Described force cell is arranged between described ladders in painting screw mandrel and described lower clamp, for measuring the pulling force between described ladders in painting screw mandrel and described lower clamp.
The elevator no-load coefficient of balance detection device of formula is drawn high described above based on screw mandrel, more preferably: also include data acquisition display instrument, it is connected with described force cell, for reading the value of thrust of described force cell, and calculates the coefficient of balance value of surveyed elevator.
The elevator no-load coefficient of balance detection device of formula is drawn high described above, more preferably: described upper fixture includes upper left fixture block and upper right fixture block, and the top of selected traction ran is between described upper left fixture block and described upper right fixture block based on screw mandrel;Described lower clamp includes lower-left fixture block and bottom right fixture block, and the lower section of selected traction ran is between described lower-left fixture block and described bottom right fixture block.
Draw high the elevator no-load coefficient of balance detection device of formula described above based on screw mandrel, more preferably: also include connecting rod, be arranged between described force cell and described lower clamp.
The elevator no-load coefficient of balance detection device of formula is drawn high described above based on screw mandrel, more preferably: also include bearing, on described, the upper end of fixture is provided with a cannelure, and described bearing is arranged in the cannelure of described upper fixture, conflicts with described upper fixture and be connected in the outer ring of described bearing;The inner ring of described bearing contacts with described ladders in painting nut;The internal diameter of the inner ring of described bearing is more than the diameter of described ladders in painting screw mandrel.
Draw high the elevator no-load coefficient of balance detection device of formula described above based on screw mandrel, more preferably: described ladders in painting nut is two, described bearing is two, and described ladders in painting screw mandrel is two, and described connecting rod is two, and described force cell is two;The most a set of described ladders in painting screw mandrel, described connecting rod, described force cell are arranged between described upper left fixture block and described lower-left fixture block, and another set of described ladders in painting screw mandrel, described connecting rod, described force cell are arranged between described upper right fixture block and described bottom right fixture block;Two described force cells are respectively used to measure the pulling force between two described ladders in painting screw mandrels and connecting rod.
Draw high the elevator no-load coefficient of balance detection device of formula described above based on screw mandrel, more preferably: also include interior cushion block, described interior cushion block is provided with the holding tank that multiple tracks matches with traction ran;It is provided with groove, in described interior cushion block is embedded in the groove of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block respectively and make the described holding tank of described interior cushion block clamp hoist ropes in the clamping face center of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block.
The elevator no-load coefficient of balance detection device of formula is drawn high described above, more preferably: on the cell wall of described holding tank, be provided with multiple tracks form friction pattern based on screw mandrel.
The elevator no-load coefficient of balance detection device of formula is drawn high described above, more preferably: described force cell is S type force cell based on screw mandrel.
The elevator no-load coefficient of balance detection device of formula is drawn high described above based on screw mandrel, more preferably: be provided with mounting ear in the both sides of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block, and on mounting ear, it is provided with installation through hole, described upper left fixture block and described upper right fixture block are installed together by bolt and nut, and described lower-left fixture block and described bottom right fixture block are installed together by bolt and nut.
Analyze and understand, compared with prior art, advantages of the present invention and having the beneficial effects that:
One, the elevator no-load coefficient of balance improvement of detecting device no-load measurement apparatus of the formula that draws high based on screw mandrel that the present invention provides, lifting device is modified to screw mandrel and draws high device, in use, screw mandrel draws high device and can solve hydraulic system load-measuring device poor synchronization problem;And the unreliability that the pulley also overcoming tether assemblies in prior art occurs;Furthermore use screw mandrel to draw high device, the cost of entirety can be reduced, reduce overall volume, alleviate overall weight.Making the detection device that the present invention provides have simple to operate and that safe operation process performance is a high advantage, to draw high the measure data precision that device obtains higher for screw mandrel simultaneously.
Two, the described data acquisition display instrument that the present invention is arranged, it is possible to achieve the value of thrust of force cell described in real time inspection also calculates the coefficient of balance value of surveyed elevator.
Three, the described upper fixture of the present invention is divided into described upper left fixture block and described upper right fixture block, the most described lower clamp is divided into described lower-left fixture block and described bottom right fixture block, described upper left fixture block and described lower-left fixture block composition left-half fixture can be used during installation, use described upper right fixture block and described bottom right fixture block composition right half part fixture, so that the present invention can be divided into two entirety, when mounted, directly by two parts to filling, the set-up time is saved.
Four, the screw mandrel of the present invention draws high device and is divided into described ladders in painting screw mandrel and described ladders in painting nut, can be so that screw mandrel draws high the operation of device, and can be according to the feature of traction ran, can the length of traction ran folded by flexible.
Five, the described bearing that the present invention is arranged, it is possible to reduce frictional force between described ladders in painting nut and described upper fixture to greatest extent.
Six, the present invention is provided with mounting ear in the both sides of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block, and is provided with installation through hole on mounting ear, which reduces the usage quantity of screw rod and nut, has been also convenient for integral installation simultaneously.
Seven, the present invention design described interior cushion block and on described interior cushion block design described holding tank etc., coefficient of friction can be increased;The most described interior cushion block is placed directly within described upper left fixture block, described upper right fixture block, described lower-left fixture block and described lower-left fixture block, can reduce the volume of described interior cushion block.
Eight, S type force cell selected by the described force cell of the present invention, so can directly use the installation position up and down of S type force cell, eliminate unnecessary connector so that overall structure of the present invention is the simplest.
Accompanying drawing explanation
Fig. 1 is the structural representation of the elevator no-load coefficient of balance detection device of the formula that draws high based on screw mandrel of the preferred embodiment of the present invention.
Fig. 2 is the structural representation of the upper left fixture block of the preferred embodiment of the present invention.
Fig. 3 is the structural representation of the interior cushion block of the preferred embodiment of the present invention.
Fig. 4 is the schematic diagram that the present invention detects the installment state of the balance coefficient of elevator detection device of the formula that draws high based on screw mandrel of car.
In figure, the upper fixture of 1-;11-upper left fixture block;12-upper right fixture block;2-lower clamp;21-lower-left fixture block;22-bottom right fixture block;3-ladders in painting screw mandrel;4-ladders in painting nut;5-connecting rod;6-force cell;Cushion block in 7-;71-holding tank;8-screw rod;91-lift car;92-counterweight.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1, the preferred embodiment of the present invention based on screw mandrel draw high formula elevator no-load coefficient of balance detection device mainly include upper fixture 1, lower clamp 2, ladders in painting screw mandrel 3, ladders in painting nut 4 and force cell 6, upper fixture 1, for clamping the top of selected traction ran;Lower clamp 2, for clamping the lower section of selected traction ran;Ladders in painting screw mandrel 3 is moving up and down to be enclosed within fixture 1;Ladders in painting nut 4 is socketed on ladders in painting screw mandrel 3 and is positioned at the top of fixture 1;Force cell 6 is arranged between ladders in painting screw mandrel 3 and lower clamp, for measuring the pulling force between ladders in painting screw mandrel 3 and lower clamp 2.
Generally speaking, what the present invention provided draw high the elevator no-load coefficient of balance detection device of formula based on screw mandrel draws high device (i.e. ladders in painting screw mandrel 3 and the combination of ladders in painting nut 4) can be achieved with the detection to elevator no-load coefficient of balance by arranging screw mandrel, compared with detection device of the prior art, the structure of the present invention is relatively easy, and screw mandrel draws high device be incorporated in the detection of elevator no-load coefficient of balance, the weight of whole detection device can be reduced, due to screw mandrel, to draw high the structure of device less, and then also reduce the volume of whole detection device, reduce the cost of whole detection device simultaneously.
In order to the readings of real time inspection force cell 6, present invention additionally comprises data acquisition display instrument (not shown), be connected with force cell 6, for reading the value of thrust of force cell 6, and calculate the coefficient of balance value of surveyed elevator.Being preferably, data acquisition display instrument is wireless connections or wired connection with the connected mode of force cell 6.Under normal circumstances, use wired connection mode, when run into be not convenient to use wired connection mode time, or use radio connection when having more convenient characteristic, data acquisition display instrument can be connected by radio connection by the present invention with force cell 6.
In order to make upper fixture 1 effectively be clamped the top of selected traction ran, upper fixture 1 includes upper left fixture block 11 and upper right fixture block 12, and the top of selected traction ran is between upper left fixture block 11 and upper right fixture block 12.Further preferably, the clamping face of upper left fixture block 11 and the clamping face of upper right fixture block 12 are rectangular structure, the width that grows tall of the clamping face of upper left fixture block 11 and the clamping face of upper right fixture block 12 (Application No. CN201210121058.2, invention entitled balance coefficient of elevator detection device patent of invention in, the length, width and height of fixture block);In the case of holding area identical (i.e. short transverse), material can be saved;In the case of width is identical, holding area can be increased.
In order to make lower clamp 2 effectively be clamped the lower section of selected traction ran, lower clamp 2 includes lower-left fixture block 21 and bottom right fixture block 22, and the lower section of selected traction ran is between lower-left fixture block 21 and bottom right fixture block 22.Further preferably, the clamping face of lower-left fixture block 21 and the clamping face of bottom right fixture block 22 are rectangular structure, the width that grows tall of the clamping face of lower-left fixture block 21 and the clamping face of bottom right fixture block 22 (Application No. CN201210121058.2, invention entitled balance coefficient of elevator detection device patent of invention in, the length, width and height of fixture block);In the case of holding area identical (i.e. short transverse), material can be saved;In the case of width is identical, holding area can be increased.
In specific works, require consideration for how to make force cell 6 measure accurately, in this case, it is not easy to directly be installed together, based on this, as shown in Figure 1 force cell 6 with lower clamp 2, present invention additionally comprises connecting rod 5, be arranged between force cell 6 and lower clamp 2.So installation as desired by connecting rod 5 at any time can realize the placement of force cell 6, the sensitivity of force cell 6 will not be destroyed.
The setting of the present invention for convenience, meeting the high request to the detection of elevator no-load coefficient of balance, as shown in Figure 1 and Figure 2, the present invention is by the rotation to ladders in painting nut 4, the lifting to lower clamp 2 can be realized, and then force cell 6 can be measured screw mandrel and draw high the value of thrust of device.Detailed process is, the lower section of selected traction ran is clamped with lower clamp 2, the top of selected traction ran is clamped with fixture 1, now ladders in painting nut 4 is located exactly at the upper end of fixture 1 and upper fixture 1 is implemented location, a top, when the value of thrust needing measurement screw mandrel to draw high device, rotate ladders in painting nut 4, ladders in painting screw mandrel 3 is made to move up, in this case, traction ran bending selected by between upper fixture 1 and lower clamp 2 does not stresses, now record the value of thrust of force cell 6, when being provided with data acquisition display instrument, the value of thrust of force cell 6 directly can be read by data acquisition display instrument;So can learn the value of thrust of force cell 6 in real time.When rotating ladders in painting nut 4, if by direct for the lower end of ladders in painting nut 4 upper-end contact with upper fixture 1, rotation difficulty can be caused, the problems such as stress contact occur, based on this, as shown in Figure 2, present invention additionally comprises bearing (not shown), it is provided with a cannelure in the upper end of upper fixture 1, bearing is arranged in the cannelure of fixture 1, the internal diameter of the inner ring of bearing is more than the diameter of ladders in painting screw mandrel 3, conflict with upper fixture 1 and contact in the outer ring of bearing, the outer ring making bearing rotates with upper fixture 1 simultaneously or does not rotates simultaneously, the inner ring of bearing contacts with ladders in painting nut 4, the inner ring making bearing rotates with ladders in painting nut 4 simultaneously or does not rotates simultaneously.When rotating ladders in painting nut 4, the inner ring of bearing rotates with ladders in painting nut 4, external diameter due to bearing inner race is more than the diameter of ladders in painting screw mandrel 3, therefore ladders in painting screw mandrel 3 can realize moving up and down on bearing, and now the outer ring of bearing just contacts with upper fixture 1, it is possible to realize the lifting to lower clamp 2 in the case of directly not contacting with upper fixture 1 at ladders in painting nut 4.In the present invention, bearing is preferably thrust bearing and the combination of zanjon bearing, so can reduce frictional force between ladders in painting nut 4 and upper fixture 1 to greatest extent.
In order to coefficient of balance when accurately measuring elevator no-load, ladders in painting nut 4 is two, and bearing is two, and ladders in painting screw mandrel 3 is two, and connecting rod 5 is two, and force cell 6 is two;The most a set of ladders in painting screw mandrel 3, connecting rod 5, force cell 6 are arranged between upper left fixture block 11 and lower-left fixture block 21, another set of ladders in painting screw mandrel 3, connect 5 bars, force cell 6 is arranged between upper right fixture block 12 and bottom right fixture block 22;Two force cells 6 are respectively used to measure the pulling force between two ladders in painting screw mandrels 3 and connecting rod 5.
In order to upper left fixture block 11 and upper right fixture block 12 are fixed together, as shown in Figure 1, present invention additionally comprises fastening assembly, fastening assembly includes screw rod 8 and nut (not shown), nut is spirally connected with screw rod 8, upper left fixture block 11 and upper right fixture block 12 are tightened together, makes upper left fixture block 11 and upper right fixture block 12 clamp the top of selected traction ran.In like manner lower-left fixture block 21 and bottom right fixture block 22 are also tightened together by fastening assembly, make lower-left fixture block 21 and bottom right fixture block 22 clamp the lower section of selected traction ran.Certainly the group number of fastening assembly is determined according to actual needs.
The upper fixture 1 of the present invention and lower clamp 2 are steel matter and make, can ensure that the clamping rigidity of fixture 1 and lower clamp 2 in this case, make owing to hoist ropes is all steel matter, hoist ropes, during clamping, can be caused damage, sometimes by hoist ropes pinch off by upper fixture 1 and lower clamp 2, in order to avoid this situation occurs, as it is shown on figure 3, present invention additionally comprises interior cushion block 7, interior cushion block 7 is provided with the holding tank 71 that multiple tracks matches with hoist ropes;Groove it is provided with, in interior cushion block 7 is embedded in the groove of upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22 respectively and make the holding tank 71 of interior cushion block 7 clamp hoist ropes in the clamping face center of upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22.Preferably, being provided with multiple tracks form friction pattern on the cell wall of holding tank 71, can strengthen frictional force further, further preferably, multiple tracks form friction pattern is uniform setting, to realize the uniformity to hoist ropes clamping and stability.The interior cushion block 7 of the present invention is made for macromolecular material, and interior cushion block 7 can be that quality of rubber materials makes, it is also possible to makes for nylon material, as long as having enough intensity and the big any material of frictional force, so can increase the frictional force of interior cushion block 7 further.Interior cushion block 7 and upper fixture 1, lower clamp 2 mounting means specifically, interior cushion block 7 is arranged in the groove of upper fixture 1 and lower clamp 2, when interior cushion block 7 contact with hoist ropes, first contacted with hoist ropes by form friction pattern, applying first clamps;Contacted with hoist ropes by the cell wall of holding tank 71 again, apply second clamping, finally by upper lower clamp, hoist ropes is clamped.A kind of elevator no-load coefficient of balance in Application No. 201420516482.1 detects in device, it is that friction plate is just fastened on upper fixture and lower clamp through the installing hole of friction plate by friction plate by bolt, so can destroy the architectural characteristic of friction plate, in the present invention, interior cushion block 7 is embedded in upper fixture 1 and lower clamp 2, interior cushion block 7 does not offers installing hole, so without the architectural characteristic of cushion block 7 in destroying, decrease the probability that damaging occurs in interior cushion block 7.
In the present invention, require consideration for how that reduction uses connector, consider based on this, as shown in Figure 1, Figure 2, Figure 3 shows, the force cell 6 of the present invention is preferably S type force cell, so can directly use the installation position up and down of S type force cell, eliminate unnecessary connector so that overall structure of the present invention is the simplest.
As shown in Figure 1, Figure 2, Figure 3 shows, traction ran is specifically described as a example by steel wire rope by the present invention.
If steel wire rope is five;Connected into made left-half by 10, first ladders in painting screw mandrel of 4, first bearing of 11, first ladders in painting nut of upper left fixture block 3, first force cell 6, first connecting rod 5, lower-left fixture block 21;In like manner, 10, second ladders in painting screw mandrel of 4, second bearing of 12, second ladders in painting nut of upper right fixture block 3, second force cell 6, second connecting rod 5, bottom right fixture block 22 right half part is connected into.In connection procedure, according to the diameter of steel wire rope and installation site length, the length of connecting rod can be selected.Diameter according to steel wire rope and radical, cushion block 7 in choosing suitably, it is respectively charged in upper left fixture block 11, lower-left fixture block 21, upper right fixture block 12, bottom right fixture block 22.
Between five road holding tanks 71 of the interior cushion block 7 top of five steel wire ropes 5 being placed in upper left fixture block 11 and upper right fixture block 12;Between five road holding tanks 71 of the interior cushion block 7 that the lower section of five steel wire ropes 5 is placed in lower-left fixture block 21 and bottom right fixture block 22;
It is respectively provided on two sides with mounting ear at upper left fixture block 11 and upper right fixture block 12, the mounting ear of upper left fixture block 11 and upper right fixture block 12 has installation through hole (not shown), screw rod 8 passes the installation through hole of the mounting ear of upper left fixture block 11 and upper right fixture block 12 and uses nut that upper left fixture block 11 and upper right fixture block 12 are applied fastening force, and then the interior cushion block 7 of upper left fixture block 11 and upper right fixture block 12 is applied chucking power, the top of five steel wire ropes 5 is realized clamping;Equally, it is respectively provided on two sides with mounting ear at lower-left fixture block 21 and bottom right fixture block 22, the mounting ear of lower-left fixture block 21 and bottom right fixture block 22 has installation through hole (not shown), screw rod 8 passes the installation through hole of the mounting ear of lower-left fixture block 21 and bottom right fixture block 22 and uses nut that lower-left fixture block 21 and bottom right fixture block 22 are applied fastening force, and then the interior cushion block 7 of lower-left fixture block 21 and bottom right fixture block 22 is applied chucking power, the lower section of five steel wire ropes 5 is realized clamping;
After clamping, rotate ladders in painting nut 4, ladders in painting screw mandrel 3 is lifted up, and then the lifting of lower clamp 2 can be realized, so that the steel wire rope 5 of interlude clamping is in relaxed state, as shown in Figure 4, force cell 6 directly records hoisting elevator car 91 and the weight of counterweight 92, it is achieved the measurement of coefficient of balance.
Below, the Cleaning Principle of the elevator no-load coefficient of balance detection device of the formula that draws high based on screw mandrel of the present invention is described.
As shown in Figure 4, during balance coefficient of elevator detection, lift car 91 and counterweight 92 are successively moved to the top position of hoistway, this balance coefficient of elevator detection device is installed.
When lift car 91 zero load be placed in hoistway top and static time, install the present invention based on screw mandrel draw high formula balance coefficient of elevator detection device.If as it is shown in figure 1, now rotate ladders in painting nut 4, it is achieved the rising of ladders in painting screw mandrel 3, then the stress of steel wire rope tapers into, and the stress of ladders in painting nut 4 becomes larger, if after steel wire rope is in the state of not stressing, after lift car 91 moves stopping, measuring cage side weight G when obtaining static state.
In like manner, the amount of the stressing W of the counterweight 92 when obtaining static state.
Subsequently, by cage side weight G during elevator static state and counterweight-side weight W during elevator static state, it is updated in coefficient of balance algorithmic formula K=(W-G)/Q, K is coefficient of balance, W is counterweight-side weight, and G is cage side weight, and Q is the nominal load capacity of elevator.Thus, obtain static equilibrium COEFFICIENT K=(the W-G)/Q of elevator.
Concrete detection method includes:
The step of clamping traction ran, chooses above lift car 91 side or above counterweight 92 side as the traction ran of detection target, and in utilization, fixture 1 and lower clamp 2 clamp described traction ran respectively;
Screw mandrel draws high the step of device, and screw mandrel draws high device and is arranged on fixture 1, is fixed on lower clamp 2 by force cell 6, connecting rod 5;
Read the step of data, operation ladders in painting nut 4 promotes described lift car 91 or described counterweight 92, after described traction ran between upper fixture 1 and lower clamp 2 is in the state of not stressing, measure the value of thrust of ladders in painting nut 4 promoted after terminating, counterweight-side weight W when cage side weight G when obtaining elevator static state or elevator static state;With
The step of calculated equilibrium coefficient, cage side weight G during elevator static state and counterweight-side weight W during elevator static state are substituted in coefficient of balance algorithmic formula K=(W-G)/Q, wherein, K is coefficient of balance, W is counterweight-side weight, G is cage side weight, and Q is the nominal load capacity of elevator, obtains static equilibrium COEFFICIENT K=(the W-G)/Q of the elevator of elevator.
Coefficient of balance accordingly, in accordance with the invention it is possible to provide the balance coefficient of elevator detection device of the formula that draws high based on screw mandrel of a kind of no-load, during elevator static state that what this device can be safe, accurate, easy and simple to handle detect.
Analyze and understand, compared with prior art, advantages of the present invention and having the beneficial effects that:
One, the elevator no-load coefficient of balance improvement of detecting device no-load measurement apparatus of the formula that draws high based on screw mandrel that the present invention provides, lifting device is modified to screw mandrel and draws high device, in use, screw mandrel draws high device and can solve hydraulic system load-measuring device poor synchronization problem;And the unreliability that the pulley also overcoming tether assemblies in prior art occurs;Furthermore use screw mandrel to draw high device, the cost of entirety can be reduced, reduce overall volume, alleviate overall weight.Making the detection device that the present invention provides have simple to operate and that safe operation process performance is a high advantage, to draw high the measure data precision that device obtains higher for screw mandrel simultaneously.
Two, the data acquisition display instrument that the present invention is arranged, it is possible to achieve the value of thrust of real time inspection force cell 6 also calculates the coefficient of balance value of surveyed elevator.
Three, the upper fixture 1 of the present invention is divided into upper left fixture block 11 and upper right fixture block 12, lower clamp 2 is divided into lower-left fixture block 21 and bottom right fixture block 22 simultaneously, upper left fixture block 11 and lower-left fixture block 21 can be used during installation to form left-half fixture, upper right fixture block 12 and bottom right fixture block 22 is used to form right half part fixture, so that the present invention can be divided into two entirety, when mounted, directly by two parts to filling, the set-up time is saved.
Four, the screw mandrel of the present invention draws high device and is divided into ladders in painting screw mandrel 3 and ladders in painting nut 4, can be so that screw mandrel draws high the operation of device, and can be according to the feature of traction ran, can the length of traction ran folded by flexible.
Five, the bearing that the present invention is arranged, it is possible to reduce frictional force between ladders in painting nut 4 and upper fixture 1 to greatest extent.
Six, the present invention is provided with mounting ear in the both sides of upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22, and is provided with installation through hole on mounting ear, which reduces the usage quantity of screw rod 8 and nut, has been also convenient for integral installation simultaneously.
Seven, the present invention design interior cushion block 7 and on interior cushion block 7 design holding tank 71 etc., coefficient of friction can be increased;Interior cushion block 7 is placed directly within upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22, can reduce the volume of interior cushion block 7.
Eight, S type force cell selected by the force cell 6 of the present invention, so can directly use the installation position up and down of S type force cell, eliminate unnecessary connector so that overall structure of the present invention is the simplest.
As known by the technical knowledge, the present invention can be realized by the embodiment of other essence without departing from its spirit or essential feature.Therefore, embodiment disclosed above, for each side, all it is merely illustrative, is not only.All changes within the scope of the present invention or within being equal to the scope of the present invention are all included in the invention.

Claims (10)

1. the elevator no-load coefficient of balance detection device drawing high formula based on screw mandrel, it is characterised in that bag Include fixture, lower clamp, ladders in painting screw mandrel, ladders in painting nut and force cell;
Described upper fixture, for clamping the top of selected traction ran;
Described lower clamp, for clamping the lower section of selected traction ran;
Described ladders in painting screw mandrel is moving up and down to be enclosed within described upper fixture;
Described ladders in painting nut sleeve is connected on described ladders in painting screw mandrel and is positioned at the top of described upper fixture;
Described force cell is arranged between described ladders in painting screw mandrel and described lower clamp, is used for measuring institute State the pulling force between ladders in painting screw mandrel and described lower clamp.
The elevator no-load coefficient of balance detection dress drawing high formula based on screw mandrel the most according to claim 1 Put, it is characterised in that also include:
Data acquisition display instrument, is connected with described force cell, for reading described force cell Value of thrust, and calculate the coefficient of balance value of surveyed elevator.
The elevator no-load coefficient of balance detection dress drawing high formula based on screw mandrel the most according to claim 1 Put, it is characterised in that:
Described upper fixture includes that upper left fixture block and upper right fixture block, the top of selected traction ran are positioned at institute State between upper left fixture block and described upper right fixture block;
Described lower clamp includes that lower-left fixture block and bottom right fixture block, the lower section of selected traction ran are positioned at institute State between lower-left fixture block and described bottom right fixture block.
The elevator no-load coefficient of balance detection drawing high formula based on screw mandrel the most according to claim 1 and 2 Device, it is characterised in that also include:
Connecting rod, is arranged between described force cell and described lower clamp.
The elevator no-load coefficient of balance detection drawing high formula based on screw mandrel the most according to claim 1 and 2 Device, it is characterised in that also include:
Bearing, on described, the upper end of fixture is provided with a cannelure, and described bearing is arranged on described upper folder In the cannelure of tool, conflict with described upper fixture and be connected in the outer ring of described bearing;The inner ring of described bearing with Described ladders in painting nut contacts;
The internal diameter of the inner ring of described bearing is more than the diameter of described ladders in painting screw mandrel.
The elevator no-load coefficient of balance detection dress drawing high formula based on screw mandrel the most according to claim 3 Put, it is characterised in that:
Described ladders in painting nut is two, and described ladders in painting screw mandrel is two, and described force cell is two Individual;
The most a set of described ladders in painting screw mandrel, described force cell are arranged on described upper left fixture block and described Between the fixture block of lower-left, another set of described ladders in painting screw mandrel, described force cell are arranged on described upper right folder Between block and described bottom right fixture block;Two described force cells are respectively used to measure two described ladders in painting Pulling force between screw mandrel and force cell.
The elevator no-load coefficient of balance detection dress drawing high formula based on screw mandrel the most according to claim 3 Put, it is characterised in that also include:
Interior cushion block, is provided with, on described interior cushion block, the holding tank that multiple tracks matches with traction ran;
In described upper left fixture block, described upper right fixture block, described lower-left fixture block and the clamping of described bottom right fixture block Center, face is provided with groove, described interior cushion block be embedded in respectively described upper left fixture block, described upper right fixture block, The groove of described lower-left fixture block and described bottom right fixture block is interior and makes the described holding tank of described interior cushion block clamp Hoist ropes.
The elevator no-load coefficient of balance detection dress drawing high formula based on screw mandrel the most according to claim 7 Put, it is characterised in that:
The cell wall of described holding tank is provided with multiple tracks form friction pattern.
9. according to the elevator no-load coefficient of balance of the formula that draws high based on screw mandrel described in claim 1,2 or 3 Detection device, it is characterised in that:
Described force cell is S type force cell.
The elevator no-load coefficient of balance detection dress drawing high formula based on screw mandrel the most according to claim 3 Put, it is characterised in that:
In described upper left fixture block, described upper right fixture block, described lower-left fixture block and the both sides of described bottom right fixture block Being provided with mounting ear, and be provided with installation through hole on mounting ear, described upper left fixture block and described upper right fixture block lead to Crossing bolt and nut to be installed together, described lower-left fixture block and described bottom right fixture block are arranged on by bolt and nut Together.
CN201610158430.5A 2016-03-18 2016-03-18 A kind of elevator no-load coefficient of balance detection device that formula is drawn high based on screw Active CN105905720B (en)

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CN106429686A (en) * 2016-10-26 2017-02-22 广州特种机电设备检测研究院 Elevator no-load balance coefficient detection device based on motor driving
CN107043055A (en) * 2017-04-06 2017-08-15 广州特种机电设备检测研究院 A kind of uncharged elevator overload closing detecting apparatus

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CN204057578U (en) * 2014-07-06 2014-12-31 广东亚太西奥电梯有限公司 A kind of screw mandrel elevator
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CN204788741U (en) * 2015-07-10 2015-11-18 常州市鼎智机电有限公司 Lead screw step motor thrust test fixture
CN105181006A (en) * 2015-05-04 2015-12-23 长春大学 Tensile force measuring device for belt

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CN204057578U (en) * 2014-07-06 2014-12-31 广东亚太西奥电梯有限公司 A kind of screw mandrel elevator
CN104210913A (en) * 2014-08-26 2014-12-17 广州特种机电设备检测研究院 Elevator zero load balancing coefficient detecting device
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Publication number Priority date Publication date Assignee Title
CN106429686A (en) * 2016-10-26 2017-02-22 广州特种机电设备检测研究院 Elevator no-load balance coefficient detection device based on motor driving
CN107043055A (en) * 2017-04-06 2017-08-15 广州特种机电设备检测研究院 A kind of uncharged elevator overload closing detecting apparatus

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