CN105692378A - Elevator no-load balance coefficient detection device based on hydraulic cylinder direct jacking manner - Google Patents
Elevator no-load balance coefficient detection device based on hydraulic cylinder direct jacking manner Download PDFInfo
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- CN105692378A CN105692378A CN201610158388.7A CN201610158388A CN105692378A CN 105692378 A CN105692378 A CN 105692378A CN 201610158388 A CN201610158388 A CN 201610158388A CN 105692378 A CN105692378 A CN 105692378A
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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
Abstract
The invention provides an elevator no-load balance coefficient detection device based on a hydraulic cylinder direct jacking manner. The elevator no-load balance coefficient detection device comprises an upper clamp, a lower clamp, a force measuring sensor, a hydraulic cylinder, lifting rods and a pulling plate. The upper clamp is used for clamping the upper portion of a selected traction rope section; the lower clamp is used for clamping the lower portion of the selected traction rope section; a cylinder body part of the hydraulic cylinder is installed on the upper clamp; the lower end of the force measuring sensor is connected with a plunger of the hydraulic cylinder and used for measuring the pressure value of the hydraulic cylinder; the pulling plate is located above the hydraulic cylinder and is connected with the upper end of the force measuring sensor; the lower ends of the lifting rods are connected with the lower clamp, the upper ends of the lifting rods are connected with the pulling plate, and the lifting rods are used for lifting the lower clamp. A load measuring device is improved to be in the hydraulic cylinder direct jacking manner, so that in the using process, the problem of interfering in measuring results of an oil pipe can be solved due to the hydraulic cylinder direct jacking manner; and the requirement for the length of the clamped steel wire rope section can be lowered, the integral cost is reduced, the integral size is reduced, and the integral weight is reduced.
Description
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 detecting device based on hydraulic cylinder straight top type。
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, elevator is carried out decoration by user 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 research and development of LiaoNing, China petrochemical industry university coefficient of balance detection method etc. be 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 and applies。
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 that the patent No. is ZL201420516482.1 provides a kind of elevator no-load coefficient of balance detecting 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 force cell, for measuring the pulling force of described hydraulic cylinder。This utility model adopts hydraulic cylinder as load-measuring device, take full advantage of the job stability of hydraulic cylinder and the feature of reliability, making this detecting 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, result also, in pulling force sensor is measured, is had certain impact by the weight of oil pipe；And, what the method adopted be drawing oil cylinder, and this kind of oil cylinder Heavy Weight, volume is big, cost is high, the length of cable of installation is had higher requirement, limits the position of its measurement。
Summary of the invention
It is an object of the invention to provide a kind of elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type, so that solving the detecting 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 in the detecting device Heavy Weight of prior art, volume is big and cost is high technical problem simultaneously。
In order to solve the problems referred to above, the present invention provides a kind of elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type, and its technical scheme is as follows:
A kind of elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type, including upper fixture, lower clamp, force cell, hydraulic cylinder, lifting arm and arm-tie；Described upper fixture is for clamping the top of selected traction ran；Described lower clamp is for clamping the lower section of selected traction ran；The cylinder body portion of described hydraulic cylinder is arranged on described upper fixture；The lower end of described force cell is connected with the plunger of described hydraulic cylinder, for measuring the force value of described hydraulic cylinder；Described arm-tie is positioned at the top of described hydraulic cylinder, is connected with the upper end of described force cell；The lower end of described lifting arm is connected with described lower clamp, and the upper end of described lifting arm is connected with described arm-tie, is used for promoting described lower clamp。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: also include data acquisition display instrument, is connected with described force cell, for reading the force value of described force cell。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type 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；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 bottom right fixture block。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: all have lightening grooves 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, be used for alleviating weight。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: also include interior cushion block, being provided with the holding tank that multiple tracks matches with hoist ropes on described interior cushion block, described interior cushion block is positioned on the clamping face of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block and makes the holding tank of described cushion block clamp hoist ropes。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: on the clamping face of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block, be provided with upper limit platform and lower limit platform, described interior cushion block is placed in the position between described upper limit platform and described lower limit platform, described upper limit platform and described lower limit platform and carries out spacing up and down for internal cushion block。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: on the clamping face of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block, be equipped with vertical spacing preiection portion, described interior cushion block is provided with vertical stopper slot, described spacing preiection portion and described stopper slot match, spacing for described interior cushion block is carried out left and right。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: described hydraulic cylinder is two, described force cell is two；One of them described hydraulic cylinder is arranged on the fixture block of upper left；Another described hydraulic cylinder is arranged on described upper right fixture block, and two described force cells are respectively used to measure the force value of two described hydraulic cylinders。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: also include organizing fastening assembly more, being respectively used to described upper fixture and lower clamp are applied chucking power, described fastening assembly includes screw rod and nut, and described nut and described screw rod are spirally connected。
Elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type described above, more preferably: also include cover plate, for covering the end of described screw rod。
Analyze it can be seen that 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 based on hydraulic cylinder straight top type provided by the invention load-measuring device, load-measuring device has been modified into the mode that described hydraulic cylinder directly pushes up, in use, described hydraulic cylinder straight top type can solve the oil pipe interference problem to measurement result；And the requirement to folded length of cable length and the unreliability that the pulley also overcoming tether assemblies in prior art occurs can be reduced；Furthermore use described hydraulic cylinder, it is possible to reduce overall cost, reduce overall volume, alleviate the weight of entirety。Making detecting device provided by the invention have simple to operate and that safe operation process performance is high advantage, the measure data precision that described hydraulic cylinder obtains simultaneously is higher。The described hydraulic cylinder of the present invention selects jacking type oil cylinder, it is possible to has and more selects model, it is possible to uses as required, and then can reduce cost, the hydraulic cylinder selecting smaller size smaller and lightweight hydraulic cylinder。
Two, the described data acquisition display instrument that the present invention is arranged, it is possible to achieve the force value of force cell described in real time inspection, and calculate the coefficient of balance value of measured elevator。
Three, the described upper fixture of the present invention is divided into upper left fixture block and upper right fixture block, described lower clamp is divided into lower-left fixture block and bottom right fixture block simultaneously, upper left fixture block and lower-left fixture block composition left-half fixture can be adopted during installation, adopt upper right fixture block and 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 present invention all has lightening grooves on described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block, it is possible to alleviate the weight of whole detecting device。
Five, the mounting means of the described interior cushion block of the present invention adopts the mode with described upper fixture and the open screens of described lower clamp, it is possible to play easy-to-dismount feature, and the size simultaneously for described interior pad selects more flexible。
Six, the present invention is by playing, by the mode that described screw rod is arranged on described upper fixture and described lower clamp by cover plate, the advantage being easily installed。
Seven, described hydraulic cylinder is arranged on the lower section of described upper fixture by the present invention, it is possible to save the length of required traction ran。
Eight, the present invention design described interior cushion block and on described interior cushion block design holding tank etc., it is possible to increase coefficient of friction。
Nine, the described lifting arm of present invention design, according to the diameter of steel wire rope and position, it is possible to choose its length, to increase the probability measured at machine room。
Accompanying drawing explanation
Fig. 1 is the structural representation of the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type of the preferred embodiment of the present invention。
Fig. 2 is the structural representation that the upper left fixture block based on the elevator no-load coefficient of balance detecting device of hydraulic cylinder straight top type of the preferred embodiment of the present invention combines to lower-left fixture block。
Fig. 3 is the structural representation that the upper right fixture block based on the elevator no-load coefficient of balance detecting device of hydraulic cylinder straight top type of the preferred embodiment of the present invention combines to bottom right fixture block。
Fig. 4 is the structural representation of the upper right fixture block of the preferred embodiment of the present invention。
Fig. 5 is the structural representation of the interior cushion block of the preferred embodiment of the present invention。
Fig. 6 is the schematic diagram that the present invention detects the installment state of the balance coefficient of elevator detecting device based on hydraulic cylinder straight top type of car。
In figure, the upper fixture of 1-；11-upper left fixture block；12-upper right fixture block；121-connecting portion；122-lightening grooves；123-spacing preiection portion；124-upper limit platform；125-lower limit platform；2-lower clamp；21-lower-left fixture block；22-bottom right fixture block；221-journal stirrup；3-force cell；4-hydraulic cylinder；41-hydraulic cylinder seam；5-lifting arm；6-arm-tie；Cushion block in 7-；71-holding tank；72-stopper slot；8-screw rod；81-cover plate；The anti-screw rod skidding groove of 82-；91-lift car；92-counterweight。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details。
As it is shown in figure 1, the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type of the preferred embodiment of the present invention mainly includes upper fixture 1, lower clamp 2, force cell 3, hydraulic cylinder 4, lifting arm 5 and arm-tie 6；Upper fixture 1 is for clamping the top of selected traction ran；Lower clamp 2 is for clamping the lower section of selected traction ran；The cylinder body portion of hydraulic cylinder 4 is arranged on fixture 1；The lower end of force cell 3 is connected with the plunger of hydraulic cylinder 4, for measuring the force value of hydraulic cylinder 4；Arm-tie 6 is positioned at the top of hydraulic cylinder 4, is connected with the upper end of force cell 3；Lifting arm 5, the lower end of lifting arm 5 is connected with lower clamp 2, and the upper end of lifting arm 5 is connected with arm-tie 6, is used for promoting lower clamp 2。
For the ease of the installation between plunger and the force cell 3 of hydraulic cylinder 4, present invention additionally comprises connector (not shown), connector, be installed between the plunger of force cell 3 and hydraulic cylinder 4, for connecting plunger and the force cell 3 of hydraulic cylinder 4。
Generally speaking, elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type provided by the invention is by arranging hydraulic cylinder 4 upwards straight top motion and then driving lower clamp 2 to be lifted up realizing the detection to elevator no-load coefficient of balance, compared with detecting device of the prior art, the structure of the present invention is relatively easy, and the present invention adopts the straight top motion of hydraulic cylinder 4 and lifting arm 5 to match incompatible detection elevator no-load coefficient of balance, the weight of whole detecting device can be reduced, due to the cooperation by hydraulic cylinder 4 and lifting arm 5, the structure that can make whole detecting device is little, and then also reduce the volume of whole detecting device, reduce the cost of whole detecting device simultaneously。
In order to the readings of real time inspection force cell 3, present invention additionally comprises data acquisition display instrument (not shown), be connected with force cell 3, for reading the force value of force cell 3, and calculate the coefficient of balance value of measured elevator。Being preferably, the connected mode of data acquisition display instrument and force cell 3 is wireless connections or wired connection。Under normal circumstances, adopt 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 3。
In order to make upper fixture 1 effectively be clamped the top of selected traction ran, as shown in Figure 1, Figure 2 with shown in Fig. 3, the upper fixture 1 of the present invention 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。It is preferred that, 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 (in the patent of invention of application number to be CN201210121058.2, denomination of invention be balance coefficient of elevator detecting device, the length, width and height of fixture block)；When holding area identical (i.e. short transverse), it is possible to save material；When width is identical, it is possible to increase holding area。
In order to make lower clamp 2 that selected traction ran is carried out below effective clamping, as shown in Figure 1, Figure 2 with shown in Fig. 3, the lower clamp 2 of the present invention 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。It is preferred that, 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 (in the patent of invention of application number to be CN201210121058.2, denomination of invention be balance coefficient of elevator detecting device, the length, width and height of fixture block)；When holding area identical (i.e. short transverse), it is possible to save material；When width is identical, it is possible to increase holding area。
In the present invention, it is necessary to a core point of consideration is how to alleviate the weight of whole detection device, based on this, as shown in Figure 4, the both sides of the upper right fixture block 12 of the present invention all have lightening grooves 122, are used for alleviating weight。In like manner, the both sides of the upper left fixture block 11 of the present invention also all have lightening grooves, are used for alleviating weight。As shown in Figure 1, Figure 2 and Figure 3, the lower-left fixture block 21 of the present invention and the both sides of bottom right fixture block 22 also all have lightening grooves, are used for alleviating weight。
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, upper fixture 1 and lower clamp 2 are in the process of clamping, hoist ropes can be caused damage, sometimes by hoist ropes pinch off, in order to avoid this situation occurs, such as Fig. 4, shown in Fig. 5, 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, interior cushion block 7 is positioned at upper left fixture block 11, upper right fixture block 12, on the clamping face of lower-left fixture block 21 and bottom right fixture block 22 and make the holding tank 71 of interior cushion block 7 clamp hoist ropes。Preferably, the cell wall of holding tank 71 is provided with multiple tracks form friction pattern, it is possible to strengthen frictional force further, it is preferred that, 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 make for quality of rubber materials, it is also possible to make 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。In order to guarantee that interior cushion block 7 is positioned at the clamping face position of upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22, as shown in Figure 4, the present invention is provided with upper limit platform 124 and lower limit platform 125 on the clamping face of upper right fixture block 12, and interior cushion block 7 is placed in the position between upper limit platform 124 and lower limit platform 125。In like manner, the present invention is equipped with upper limit platform and lower limit platform on the clamping face of upper left fixture block 11, lower-left fixture block 21 and bottom right fixture block 22, and interior cushion block 7 is placed in the position between upper limit platform and lower limit platform；Upper limit platform is set and lower limit platform can internally carry out spacing up and down by cushion block 7。As shown in Figure 4, Figure 5, in order to internally cushion block 7 to carry out left and right spacing, the present invention is provided with vertical spacing preiection portion 123 on the clamping face of upper right fixture block 12, interior cushion block 7 is provided with vertical stopper slot 72, the spacing preiection portion 123 of upper right fixture block 12 matches with the stopper slot 72 of interior cushion block 7, carries out left and right for internal cushion block 7 spacing。For convenient upper installation between fixture 1 and hydraulic cylinder 4, as shown in Figure 1, Figure 2 and Figure 3, being provided with connecting portion 121 in the bottom of the opposite face of the clamping face of upper right fixture block 12, the cylinder body portion of hydraulic cylinder 4 is arranged on connecting portion 121。In like manner, also being provided with connecting portion in the bottom of the opposite face of the clamping face of upper left fixture block 11, the cylinder body portion of hydraulic cylinder 4 is arranged on the connecting portion of upper left fixture block 11。In order to facilitate the connection between lower clamp 2 and lifting arm 5, as it is shown in figure 1, be provided with journal stirrup 221 at the opposite face place of the clamping face of bottom right fixture block 22, the lower end of lifting arm 5 is connected with the journal stirrup 221 of bottom right fixture block 22。In order to keep the balance of arm-tie 6, as shown in Figure 1, Figure 2 and Figure 3, the two ends at arm-tie 6 of the present invention are all connected with a lifting arm 5, are all arranged with two journal stirrups on lower-left fixture block 21 and bottom right fixture block 22。In the present invention, interior cushion block 7 and upper fixture 1, lower clamp 2 mounting means specifically, interior cushion block 7 is placed on 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。In a kind of elevator no-load coefficient of balance detecting device that application number is 201420516482.1, it is that friction plate is just fastened on upper fixture and lower clamp by the installing hole of bolt traverse friction plate by friction plate, so can destroy the architectural characteristic of friction plate, in the present invention, interior cushion block 7 is placed on upper fixture 1 and lower clamp 2, interior cushion block 7 does not offer installing hole, so without destroying the architectural characteristic of interior cushion block 7, decrease the probability that damaging occurs in interior cushion block 7。
In order to coefficient of balance when accurately measuring elevator no-load, hydraulic cylinder 4 is two, and force cell 3 is two；One of them hydraulic cylinder 4 is arranged on upper left fixture block 11；Another hydraulic cylinder 4 is arranged on upper right fixture block 12, and two force cells 3 are respectively used to measure the force value of two hydraulic cylinders, adopt two hydraulic cylinders 4 and two force cells 3, it is possible to occur measuring inaccurate situation when effectively evading employing one。Certainly, in order to facilitate hydraulic cylinder 4 and the installation of force cell 3, the arm-tie 6 of the present invention is also two。
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 eight groups of fastening assemblies, fastening assembly includes screw rod 8 and nut (not shown), screw rod 8 sequentially passes through upper right fixture block 12 and upper left fixture block 11, four nuts are spirally connected with screw rod 8, thus upper left fixture block 11 and upper right fixture block 12 being tightened together, make 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 other four groups of fastening assemblies, make lower-left fixture block 21 and bottom right fixture block 22 clamp the lower section of selected traction ran。The group number of certain fastening assembly is determined according to actual needs。Skid during in order to prevent screw rod 8 from dropping and fastening, as shown in Figure 1, Figure 2 and Figure 3, upper right fixture block 12 is respectively equipped with anti-screw rod skidding groove 82 with bottom right fixture block 22, skids when dropping for anti-screw rod or fasten。Anti-screw rod skidding groove 82, after anti-screw rod skidding groove 82, is covered by screw rod 8 with cover plate 81。
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, traction ran is specifically described by the present invention for steel wire rope。
If steel wire rope is 7；First hydraulic cylinder 4 is arranged on the connecting portion of upper left fixture block 11, first force cell 3 is arranged between the first arm-tie 6 and the first connector；Second hydraulic cylinder 4 is arranged on the connecting portion 121 of upper right fixture block 12, second force cell 3 is arranged between the second arm-tie 6 and the second connector；Cushion block 7 in all placing on upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22。
Between seven road holding tanks 71 of the interior cushion block 7 top of seven steel wire ropes being placed in upper left fixture block 11 and upper right fixture block 12；The lower section of seven steel wire ropes is placed between the seven road holding tanks 71 of interior cushion block 7 of lower-left fixture block 21 and bottom right fixture block 22；
The connection of upper fixture 1 and lower clamp 2 is realized by lifting arm 5；By wherein four groups of fastening assemblies, upper left fixture block 11 and upper right fixture block 12 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 clamping implemented above to seven steel wire ropes；Equally, by other four groups of fastening assemblies, lower-left fixture block 21 and bottom right fixture block 22 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 seven steel wire ropes is realized clamping；
After clamping, the hydraulic stem upwards jack-up of hydraulic cylinder 4 is realized by hydraulic cylinder seam 41 being carried out oil-feed, lifting arm 5 is driven to be raised above, and then the lifting of lower clamp 2 can be realized, so that the steel wire rope of interlude clamping is in relaxed state, as shown in Figure 6, force cell 3 directly records the weight of hoisting elevator car 91 and counterweight 92, it is achieved the measurement of coefficient of balance。
Below, the Cleaning Principle of the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type of the present invention is described。
As shown in Figure 6, during balance coefficient of elevator detection, lift car 91 and counterweight 92 are successively moved to the top position of hoistway, at machine room, this balance coefficient of elevator detecting device is installed。
When lift car 91 zero load be placed in hoistway top and static time, as shown in Figure 6 install the present invention the balance coefficient of elevator detecting device based on hydraulic cylinder straight top type, the present invention ignores car and leads the frictional force of boots and guide rail。So as shown in Figure 1, if now hydraulic cylinder 4 is exerted a force, realize the rising of lifting arm 5, then the stress of steel wire rope tapers into, the stress of the hydraulic cylinder of hydraulic cylinder 4 becomes larger, if after steel wire rope is in the state of not stressing, continuing to upwards slowly at the uniform velocity hydraulic cylinder 4 be exerted a force, lifting arm 5 is made to continue to lift up, until folded steel wire rope is fully relaxed。After lift car 91 moves stopping, cage side weight G when obtaining static state can be measured。
In like manner, the amount of the stressing W of the counterweight 92 when obtaining static state。
Subsequently, counterweight-side weight W when cage side weight G during by elevator static state and elevator static state, it is updated in coefficient of balance algorithmic formula K=(W-G)/Q, K is coefficient of balance, and 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；
The step of hydraulic cylinder 4, hydraulic cylinder 4 is arranged on fixture 1, connects lower clamp 2 by connector, force cell 3, arm-tie 6 and lifting arm 5；
Read the step of data, the hydraulic stem hoisting elevator car 91 of operation hydraulic cylinder 4 or counterweight 92, after described traction ran between upper fixture 1 and lower clamp 2 is in the state of not stressing, measure the force value of hydraulic stem of hydraulic cylinder 4, counterweight-side weight W when cage side weight G when respectively obtaining elevator static state or elevator static state；With
The step of calculated equilibrium coefficient, counterweight-side weight W when cage side weight G during by elevator static state and elevator static state substitutes 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 elevator。
Coefficient of balance accordingly, in accordance with the invention it is possible to provide a kind of elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type, during elevator static state that what this device can be safe, accurate, easy and simple to handle detect respectively。
Analyze it can be seen that 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 based on hydraulic cylinder straight top type provided by the invention load-measuring device, load-measuring device has been modified into the mode that hydraulic cylinder 4 directly pushes up, in use, hydraulic cylinder 4 straight top type can solve the oil pipe interference problem to measurement result；And the requirement to folded length of cable length can be reduced, furthermore use hydraulic cylinder 4, it is possible to reduce overall cost, reduce overall volume, alleviate the weight of entirety。Making detecting device provided by the invention have simple to operate and that safe operation process performance is high advantage, the measure data precision that hydraulic cylinder 4 obtains simultaneously is higher。The hydraulic cylinder 4 of the present invention selects jacking type oil cylinder, it is possible to has and more selects model, it is possible to uses as required, and then can reduce cost, the hydraulic cylinder selecting smaller size smaller and lightweight hydraulic cylinder。
Two, the data acquisition display instrument that the present invention is arranged, it is possible to achieve the force value of real time inspection force cell 3 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 adopted during installation to form left-half fixture, upper right fixture block 12 and bottom right fixture block 22 is adopted 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 present invention all has lightening grooves 122 on upper left fixture block 11, upper right fixture block 12, lower-left fixture block 21 and bottom right fixture block 22, it is possible to alleviate the weight of whole detecting device。
Five, the mounting means of the interior cushion block 7 of the present invention adopts the mode with upper fixture 1 and the open screens of lower clamp 2, it is possible to play easy-to-dismount feature, and the size simultaneously for interior pad 7 selects more flexible。
Six, the present invention is by playing, by the mode that screw rod 8 is arranged on upper fixture 1 and lower clamp 2 by anti-screw rod skidding groove 82, cover plate 81, the advantage being easily installed。
Seven, hydraulic cylinder 4 is arranged on the lower section of upper fixture 1 by the present invention, it is possible to save the length of required traction ran。
Eight, the present invention design interior cushion block 7 and on interior cushion block 7 design holding tank 71 etc., it is possible to increase coefficient of friction。
Nine, the lifting arm 5 of present invention design, according to the diameter of steel wire rope and position, it is possible to choose its length, to increase the probability measured at machine room。
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 within the scope of the present invention or be all included in the invention in the change being equal in the scope of the present invention。
Claims (10)
1. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type, it is characterised in that include fixture, lower clamp, force cell, hydraulic cylinder, lifting arm and arm-tie；
Described upper fixture is for clamping the top of selected traction ran；
Described lower clamp is for clamping the lower section of selected traction ran；
The cylinder body portion of described hydraulic cylinder is arranged on described upper fixture；
The lower end of described force cell is connected with the plunger of described hydraulic cylinder, for measuring the force value of described hydraulic cylinder；
Described arm-tie is positioned at the top of described hydraulic cylinder, is connected with the upper end of described force cell；
The lower end of described lifting arm is connected with described lower clamp, and the upper end of described lifting arm is connected with described arm-tie, is used for promoting described lower clamp。
2. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 1, it is characterised in that also include:
Data acquisition display instrument, is connected with described force cell, for reading the force value of described force cell。
3. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 1, it is characterised in that:
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；
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 bottom right fixture block。
4. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 3, it is characterised in that:
All have lightening grooves 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, be used for alleviating weight。
5. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 3 or 4, it is characterised in that also include:
Interior cushion block, being provided with the holding tank that multiple tracks matches with hoist ropes on described interior cushion block, described interior cushion block is positioned on the clamping face of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block and makes the holding tank of described cushion block clamp hoist ropes。
6. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 5, it is characterised in that:
The clamping face of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block is provided with upper limit platform and lower limit platform, described interior cushion block is placed in the position between described upper limit platform and described lower limit platform, described upper limit platform and described lower limit platform and carries out spacing up and down for internal cushion block。
7. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 5, it is characterised in that:
The clamping face of described upper left fixture block, described upper right fixture block, described lower-left fixture block and described bottom right fixture block is equipped with vertical spacing preiection portion, described interior cushion block is provided with vertical stopper slot, described spacing preiection portion and described stopper slot match, spacing for described interior cushion block is carried out left and right。
8. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 3 or 4, it is characterised in that:
Described hydraulic cylinder is two, and described force cell is two；One of them described hydraulic cylinder is arranged on the fixture block of upper left；Another described hydraulic cylinder is arranged on described upper right fixture block, and two described force cells are respectively used to measure the force value of two described hydraulic cylinders。
9. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 3 or 4, it is characterised in that also include:
Organizing fastening assembly more, be respectively used to described upper fixture and lower clamp are applied chucking power, described fastening assembly includes screw rod and nut, and described nut and described screw rod are spirally connected。
10. the elevator no-load coefficient of balance detecting device based on hydraulic cylinder straight top type according to claim 9, it is characterised in that also include:
Cover plate, for covering the end of described screw rod。
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| CN201610158388.7A CN105692378B (en) | 2016-03-18 | 2016-03-18 | A kind of elevator no-load coefficient of balance detection means based on hydraulic cylinder straight top type |
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