CN204944746U - There is the elevator no-load coefficient of balance pick-up unit from return function - Google Patents
There is the elevator no-load coefficient of balance pick-up unit from return function Download PDFInfo
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- CN204944746U CN204944746U CN201520517748.9U CN201520517748U CN204944746U CN 204944746 U CN204944746 U CN 204944746U CN 201520517748 U CN201520517748 U CN 201520517748U CN 204944746 U CN204944746 U CN 204944746U
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Abstract
The utility model provides a kind of elevator no-load coefficient of balance pick-up unit had from return function, comprise fixture, hydraulic cylinder, lower clamp, to be connected sensor to measure pulling force with described hydraulic cylinder, described upper fixture is arranged on the top of described hydraulic cylinder, described lower clamp is arranged on the below of described hydraulic cylinder, and described hydraulic cylinder is for realizing the lifting to described lower clamp; Wherein, also comprise return mechanism, described hydraulic cylinder is single-action hydraulic cylinder, and described return mechanism is located on described hydraulic cylinder, and for driving described hydraulic cylinder return, hydraulic stem stretches out.The utility model by design hydraulic cylinder from return function, can make pick-up unit after each test, hydraulic cylinder all gets back to initial position, can reduce the step of initial adjustment.
Description
Technical field
The utility model relates to elevator parameter detection technique field, particularly a kind of elevator no-load coefficient of balance pick-up unit had from return function.
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 power size.China about has 400,000 new elevators to install and use every year, and wherein, traction elevator accounts for more than 90%, and the every portion of the new elevator of traction-type of every portion all should carry out the testing and debugging of coefficient of balance, and coefficient of balance qualified just allows to come into operation.In addition, user carries out elevator decorating the change affecting coefficient of balance, must carry out redeterminating of coefficient of balance.Therefore, coefficient of balance detect be elevator industry one amount large, wide, require high technical work.But existing coefficient of balance detection method complex operation, error are large, have and more or less limit.
The coefficient of balance method of inspection has the load method of inspection and the no-load method of inspection by there being no-load to be divided into.The coefficient of balance detection method of existing elevator inspection rule, hand turning method have the load method of inspection, and such method of inspection need carry counterweight repeatedly, and labour intensity is large, detects the activity duration long.
The balance coefficient of elevator method of inspection can be divided into dynamic check method and static check method by state of elevator during inspection.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 complex university research and development are all the static method of inspection.The testing result of dynamic check method not only comprises the weight difference of traction sheave cage side and counterweight-side, also has the operating dynamic datas of elevator such as the frictional resistance that the operating car of elevator leads boots, counterweight-side leads boots etc.The existing balance coefficient of elevator method of inspection also do not have a kind of can realize no-load simultaneously and sound state combine the method for inspection.
But above-mentioned coefficient of balance detection method complex operation, error are large, and have and more or less limit, therefore, Chinese utility model 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 occur the problems such as unbalance loading 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 pick-up unit, comprise 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 below 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.The utility model adopts hydraulic cylinder as load-measuring device, take full advantage of the job stability of hydraulic cylinder and the feature of reliability, make this pick-up unit have the high advantage of simple to operate and safe operation process performance, the measure data precision that obtains of hydraulic cylinder is higher simultaneously.
But the hydraulic cylinder of above-mentioned elevator no-load coefficient of balance pick-up unit does not have from return function, during application, must carry out initial adjustment to it, operation simplifies not.
Summary of the invention
The purpose of this utility model is to provide a kind of elevator no-load coefficient of balance pick-up unit had from return function, can not self-return and increase the problem of operation bidirectional to solve hydraulic cylinder that prior art exists.
In order to solve the problem, the utility model provides following technical scheme:
A kind of elevator no-load coefficient of balance pick-up unit had from return function, comprise fixture, hydraulic cylinder, lower clamp, to be connected sensor to measure pulling force with described hydraulic cylinder, described upper fixture is arranged on the top of described hydraulic cylinder, described lower clamp is arranged on the below of described hydraulic cylinder, and described hydraulic cylinder is for realizing the lifting to described lower clamp; Wherein, also comprise return mechanism, described hydraulic cylinder is single-action hydraulic cylinder, and described return mechanism is located on described hydraulic cylinder, and for driving described hydraulic cylinder return, hydraulic stem stretches out.
Preferably, described sensor is pulling force sensor, and described pulling force sensor is arranged between described upper fixture and described hydraulic cylinder.
Preferably, described sensor is pressure transducer, and described hydraulic cylinder is connected with a hydraulic pump by a hydraulic tube, and described pressure transducer is located on described hydraulic tube, realizes the measurement to the pulling force of hydraulic cylinder with the pressure detecting hydraulic medium in described hydraulic tube.
Preferably, described return mechanism is a spring, and described spring housing is located on the hydraulic stem of described hydraulic cylinder.
Preferably, described return mechanism is a spring, described spring be arranged on described hydraulic cylinder cylinder interior and below the piston being positioned at described hydraulic cylinder.
Preferably, also comprise hydraulic pump, described hydraulic pump is connected with the hydraulic stem chamber of described hydraulic cylinder, and described hydraulic pump is manual pump.
Preferably, described hydraulic cylinder is along putting or be upside down located between described upper fixture, lower clamp.
Preferably, be screwed or directly inserted by screw rod between described hydraulic cylinder and described upper fixture, lower clamp and be connected and fixed.
Preferably, also comprise data presentation device, described data presentation device is connected with described pulling force sensor telecommunication by wired or wireless mode.
Analyze known, the utility model by design hydraulic cylinder from return function, can make pick-up unit after each test, hydraulic cylinder all gets back to initial position, can reduce the step of initial adjustment.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the utility model first embodiment.
Fig. 2 is the structural representation of the hydraulic cylinder of the utility model first embodiment.
Fig. 3 is the structural representation of the utility model first embodiment.
In figure, the upper fixture of 1-; Fixture on 11-first; Fixture on 12-second; 2-lower clamp; 21-first lower clamp; 22-second lower clamp;
3-pulling force sensor; 31-connecting screw rod assembly; 311-screw rod; 312-nut; 32-sensor screw;
4-data presentation device; 5-spring; 6-hydraulic cylinder; 61-cylinder body; 62-piston; 63-piston rod; 64-hydraulic cylinder backboard; 65-hydraulic cylinder baffle plate; 7-hydraulic pump; 8-wire rope; 9-fastening assembly.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, what the utility model first embodiment provided have from the elevator no-load coefficient of balance pick-up unit of return function comprise upper fixture 1, two hydraulic cylinders 6, lower clamp 2, between hydraulic cylinder 6 and upper fixture 1 for measuring the pulling force sensor 3 of pulling force, upper fixture 1 is arranged on the top of hydraulic cylinder 6, lower clamp 2 is arranged on the below of hydraulic cylinder 6, and hydraulic cylinder 6 is for realizing the lifting to lower clamp 2.In order to realize the self-return of hydraulic cylinder 6, also namely impel the hydraulic stem auto-extending of hydraulic cylinder 6, the present embodiment comprises the spring 5 as return mechanism, and hydraulic cylinder 6 is single-action hydraulic cylinder.Again as shown in Figure 2, spring 5 is located in the cylinder body 61 of hydraulic cylinder 6, below the piston 62 being specifically positioned at hydraulic cylinder 6.Spring 5 is Compress Spring, and its tension force is for driving piston rod 63 return of hydraulic cylinder 6, stretching out.
In other embodiments, although return mechanism is a spring, this spring can be located at hydraulic cylinder outside, and be set on the hydraulic stem of hydraulic cylinder, two ends are supported between cylinder body and lower clamp.
The power resources of hydraulic cylinder 6 are hydraulic pump 7, and hydraulic pump 7 connects with the hydraulic stem chamber (also namely, the chamber that hydraulic stem 63 moves back and forth) of hydraulic cylinder 6, and hydraulic pump 7 is manual pump, are easy to control.
In FIG, hydraulic cylinder 6 is upside down located between fixture 1, lower clamp 2.But in other embodiments, hydraulic cylinder 6 also can along being fixed on therebetween with putting.
When fixing between hydraulic cylinder 6 and upper fixture 1, lower clamp 2, can be screwed, also can on upper fixture 1, lower clamp 2 and hydraulic cylinder 6 through hole is set accordingly, adopt screw rod directly to insert this through hole and be connected and fixed three.
The conveniently testing result of Real Time Observation pulling force sensor 3, the present embodiment also comprises data presentation device 4, and data presentation device 4 can be connected with pulling force sensor 3 telecommunication by wired or wireless mode.
When applying the present embodiment, the starting stage, due to the effect of spring 5, the hydraulic stem 63 of hydraulic cylinder 6 stretches out cylinder body 61 all the time substantially.When needs hydraulic cylinder 6 promotes lower clamp 2, operation hydraulic hand-pump 7 is to the hydraulic stem chamber delivery hydraulic pressure wet goods medium of hydraulic cylinder 6, and piston 62 pressurized also applies pressure to spring 5, and spring 5 compresses, and now hydraulic stem 63 also bounces back to cylinder body 61, and lower clamp 2 promotes.Finish using, hydraulic hand-pump 7 no longer pumped (conveying) medium, spring 5 driven plunger 62 moves, and hydraulic stem 63 stretches out cylinder body 61 again substantially, and hydraulic pressure wet goods medium is extruded, and is back to hydraulic hand-pump 7.
The utility model is simple to operate, need not again through the initial adjustment of hydraulic cylinder, and it can self-return.
In order to make upper fixture 1 effectively be clamped on the top of selected traction ran, upper fixture 1 to comprise on first fixture 12 on fixture 11 and second, and the top of selected traction ran is on first on fixture 11 and second between fixture 12.Further preferably, on first, on fixture 11 and second, fixture 12 is rectangular structure, on first on fixture 11 and second the long ﹥ height ﹥ of fixture 12 wide (application number be CN201210121058.2, utility model name is called in the utility model patent of balance coefficient of elevator pick-up unit, the wide ﹥ of long ﹥ of fixture block is high); When holding area identical (i.e. short transverse), material can be saved; When Width is identical, holding area can be increased.
In order to make lower clamp 2 effectively be clamped the bottom of selected traction ran, lower clamp 2 comprises the first lower clamp 21 and the second lower clamp 22, and the bottom of selected traction ran is between the first lower clamp 21 and the second lower clamp 22.Further preferably, first lower clamp 21 and the second lower clamp 22 are rectangular structure, the long ﹥ height ﹥ of the first lower clamp 11 and the second lower clamp 12 wide (application number be CN201210121058.2, utility model name is called in the utility model patent of balance coefficient of elevator pick-up unit, the wide ﹥ of long ﹥ of fixture block is high); When holding area identical (i.e. short transverse), material can be saved; When Width is identical, holding area can be increased.
Be convenient in order to hydraulic cylinder 6 of the present utility model can be made install and force, as shown in Figure 3, the utility model also comprises hydraulic cylinder backboard 64 and hydraulic cylinder baffle plate 65, hydraulic cylinder 6 is arranged between hydraulic cylinder backboard 64 and hydraulic cylinder baffle plate 65, hydraulic cylinder baffle plate 65 is arranged on the top of lower clamp 2, and hydraulic cylinder backboard 64 is arranged on the bottom of fixture 1.Further preferably, the cylinder body 61 of hydraulic cylinder 6 is arranged on hydraulic cylinder backboard 64, and the piston rod 63 (also referred to as hydraulic stem) of hydraulic cylinder is arranged on hydraulic cylinder baffle plate 65.Generally, the arrangement form of hydraulic cylinder 6 is designed to inversion type and arranges by this preferred embodiment, this design reduces the whole height of pick-up unit.
Pulling force sensor 3 of the present utility model can be contact pulling force sensor, also can be contactless pulling force sensor, when pulling force sensor 3 is contactless pulling force sensor, contactless pulling force sensor can be arranged on piston rod 63 (hydraulic stem) position near hydraulic cylinder 6, is obtained the lift power of piston rod 63 (hydraulic stem) by the distortion of measuring piston rod 63 (hydraulic stem); When being contact pulling force sensor by pulling force sensor 4, pulling force sensor 3 is arranged between fixture 1 and hydraulic cylinder backboard 64 or pulling force sensor 3 is arranged between lower clamp 2 and hydraulic cylinder baffle plate 65.Preferred detecting unit also comprises connecting screw rod assembly 31 and sensor screw 32, and when pulling force sensor 3 is contact pulling force sensor, connecting screw rod assembly 31 and sensor screw 32 are arranged on the two ends of pulling force sensor 3 respectively; When pulling force sensor 3 is arranged between fixture 1 and hydraulic cylinder backboard 64, sensor screw 32 is arranged on hydraulic cylinder backboard 64, and connecting screw rod assembly 31 is arranged on fixture 1; When pulling force sensor 3 is arranged between lower clamp 2 and hydraulic cylinder baffle plate 65, sensor screw 32 is arranged on hydraulic cylinder baffle plate 65, and connecting screw rod assembly 31 is arranged on lower clamp 2; This mounting means is conveniently installed, and is installed by connecting screw rod assembly 31 on lower clamp 2 or upper fixture 1, is conveniently finally tighten connecting screw rod assembly 31.Further preferably, the conveniently installation of hydraulic cylinder 6 and pulling force sensor 3, fixture 11 on first, fixture 12 on second, the back side of the first lower clamp 21 and the second lower clamp 22 (sets the opposite face of fixture 12 on fixture on first 11 and second as clamping face, if on fixture 11 and second, the opposite of the clamping face of fixture 12 is the back side on first, if the opposite face of the first lower clamp 21 and the second lower clamp 22 is clamping face, if the opposite of the clamping face of the first lower clamp 21 and the second lower clamp 22 is the back side) be provided with mounting ear, connecting screw rod assembly 31 comprises screw rod 311 and nut 312 (being preferably stainless steel nut), to be arranged on hydraulic cylinder backboard 64 and first between fixture 11 for pulling force sensor 3, on first fixture 11 mounting ear on have installation through hole, sensor screw 32 is twisted on the one end and hydraulic cylinder backboard 64 being connected on pulling force sensor 3, screw rod 311 be arranged on pulling force sensor 3 the other end and through the installation through hole on the mounting ear of fixture 11 on first, then nut 312 is passed through by fastening for screw rod 311.
In order to measure coefficient of balance during elevator no-load exactly, hydraulic cylinder 6 of the present utility model is two, and pulling force sensor 3 is two; One of them hydraulic cylinder 6 to be arranged on first between fixture 11 and the first lower clamp 21, another hydraulic cylinder 6 to be arranged on second between fixture 12 and the second lower clamp 22, two pulling force sensors 3 are respectively used to the pulling force of measurement two hydraulic cylinders 6, adopt two hydraulic cylinders 6 and two pulling force sensors 3, occur measuring inaccurate situation when effectively can evade employing one.
As shown in Figure 3, pick-up unit also comprises eight groups of fastening assemblies 9, and fastening assembly 9 comprises bolt and bolt fastener, and bolt fastener and bolt are spirally connected, be respectively used to apply holding force to upper fixture 1 and lower clamp 2, clamp to make upper fixture 1 and lower clamp 2 hoist ropes needing detection.The group number of certain fastening assembly 9 is determined according to actual needs.
Upper fixture 1 of the present utility model and lower clamp 2 are steel matter and make, the clamping rigidity of fixture 1 and lower clamp 2 can be ensured in this case, make because hoist ropes is all steel matter, upper fixture 1 and lower clamp 2 are in the process of clamping, damage can be caused, sometimes by hoist ropes pinch off, in order to avoid this situation occurs to hoist ropes, pick-up unit also comprises four pieces of friction plates (preset fixture), and friction plate is provided with the holding tank that multiple tracks and hoist ropes match; On first, on fixture 11, second, the clamping face center of fixture 12, first lower clamp 21 and the second lower clamp 22 is provided with groove, makes the holding tank of friction plate clamp hoist ropes in the groove that four pieces of friction plates are embedded in fixture 12, first lower clamp 21 and the second lower clamp 22 on fixture 11, second on first respectively.Preferably, the cell wall of holding tank is provided with multiple tracks friction line, friction force can be strengthened further, further preferably, multiple tracks friction line be uniform setting, with realize to hoist ropes clamping homogeneity and stability.Friction plate can make for quality of rubber materials, also can make for nylon material, as long as have enough intensity and the large any material of friction force.The mounting means of friction plate and upper fixture 1, lower clamp 2 is specially, friction plate is arranged in the groove of upper fixture 1 and lower clamp 2, then through the mounting hole of friction plate, friction plate is fastened on upper fixture 1 and lower clamp 2 by bolt etc., when friction plate contacts with hoist ropes, first contacted with hoist ropes by friction line, apply first clamping; Contacted with hoist ropes by the cell wall of holding tank again, apply second clamping, finally by upper lower clamp, hoist ropes is clamped.
As shown in Figure 3, the utility model is specifically described for wire rope 8.
If wire rope 8 is five; A hydraulic cylinder 6 and a pulling force sensor 3 are arranged on first between fixture 11 and the first lower clamp 21, another hydraulic cylinder 6 and another pulling force sensor 3 are arranged on second between fixture 12 and the second lower clamp 22; Two friction plates are arranged at the opposite face of fixture 12 on fixture on first 11 and second, and two other friction plate is arranged at the opposite face of the first lower clamp 21 and the second lower clamp 22;
Between the five road holding tanks top of five wire rope 8 being placed in two friction plates in top; Between the five road holding tanks bottom of five wire rope 8 being placed in two friction plates in bottom;
On first on fixture 11 and second on fixture 12 respectively correspondence be provided with four groups of through holes (not shown), the bolt of four groups of fastening assemblies 9 is each passed through the through hole of fixture 12 on fixture on first 11 and second; Be fastened by bolts being spirally connected between part and bolt, holding force applied to fixture 12 on fixture on first 11 and second, and then holding force is applied to two, top friction plate, clamping is realized to the top of five wire rope 8; On the first lower clamp 21 and the second lower clamp 22, correspondence is provided with four groups of through holes (not shown) respectively, the bolt of other four groups of fastening assemblies 9 is each passed through the through hole of the first lower clamp 21 and the second lower clamp 22, be fastened by bolts being spirally connected between part and bolt, holding force is applied to the first lower clamp 21 and the second lower clamp 22, and then holding force is applied to two, bottom friction plate, clamping is realized to the bottom of five wire rope 8;
After clamping, now hydraulic cylinder 6 is due to the elastic force effect of spring 5, the piston rod 63 of hydraulic cylinder 6 is made to stretch out cylinder body 61 and extend maximum, when needs want hydraulic cylinder 6 to promote lower clamp 2, operation hydraulic hand-pump 7 is to the hydraulic stem chamber delivery hydraulic pressure wet goods medium of hydraulic cylinder 6, and piston 62 pressurized also applies pressure to spring 5, and spring 5 compresses, now piston rod 63 also bounces back to cylinder body 61, and lower clamp 2 promotes
When finishing using, hydraulic hand-pump 7 no longer pumped (conveying) medium, spring 5 driven plunger 62 moves, and piston rod 63 stretches out cylinder body 61 again substantially, and hydraulic pressure wet goods medium is extruded, and is back to hydraulic hand-pump 7.
Below, the Cleaning Principle of the utility model balance coefficient of elevator pick-up unit is described.
When balance coefficient of elevator detects, lift car and counterweight are successively moved to the top position of hoistway, this balance coefficient of elevator pick-up unit is installed.
When lift car zero load be placed in hoistway top and static time, balance coefficient of elevator pick-up unit of the present utility model is installed, in the utility model, ignores the deadweight of car.If the now hydraulic stem head of lifting hydraulic cylinder 6, then the stressed of wire rope 8 diminishes gradually, the stressed of hydraulic cylinder 6 becomes large gradually, if after wire rope 8 is in the state of not stressing, still continue the hydraulic stem head of upwards slow at the uniform velocity lifting hydraulic cylinder 6, then hydraulic cylinder 6 now not only bears the deadweight of lift car, also will overcome the various resistances that lift car is in operation, cage side weight G1 when what now hydraulic cylinder 6 carried is dynamic.After lift car moves stopping, the various resistances in elevator cage operation disappear, and can measure cage side weight G2 when obtaining static state.
In like manner, the amount of the stressing W2 of the counterweight when amount of the stressing W1 of counterweight when obtaining dynamic and static state.
Subsequently, counterweight-side weight W1, W2 when cage side weight G1, G2 and elevator time elevator is dynamic, static are dynamic, static, be updated in coefficient of balance algorithmic formula K=(W-G)/Q, K is coefficient of balance, W is counterweight-side weight, G is cage side weight, and Q is the nominal load capacity of elevator.Thus, obtain mobile equilibrium COEFFICIENT K 1=(the W1-G1)/Q of elevator and static balancing COEFFICIENT K 2=(the W2-G2)/Q of elevator.
Concrete detection method comprises:
The step of clamping traction ran, to choose above lift car side or above counterweight-side as the traction ran detecting target, in utilization, fixture 1 and lower clamp 2 clamp described traction ran respectively;
The step of hydraulic cylinder 6, the bottom of hydraulic cylinder 6 is fixed on fixture 1, and the top of hydraulic cylinder 6 is fixed on lower clamp 2;
Read the step of data, operation hydraulic cylinder 6 promotes described lift car or described counterweight, after described traction ran between upper fixture 1 and lower clamp 2 is in the state of not stressing, continue at the uniform velocity hoisting elevator car or counterweight one segment distance, under traction ran between upper fixture 1 and lower clamp 2 is in the state do not stressed, measure in lifting process with the value of thrust promoting the hydraulic cylinder 6 after terminating, obtain respectively elevator dynamic, static time cage side weight G1, G2 or elevator dynamic, static time counterweight-side weight W1, W2; With
The step of calculated equilibrium coefficient, counterweight-side weight W1, W2 when cage side weight G1, G2 and elevator time elevator is dynamic, static are dynamic, static substitute in coefficient of balance algorithmic formula K=(W-G)/Q, wherein, 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, obtain mobile equilibrium COEFFICIENT K 1=(the W1-G1)/Q of elevator, and static balancing COEFFICIENT K 2=(the W2-G2)/Q of elevator.
What the utility model second embodiment provided have comprises upper fixture 1, two hydraulic cylinders 6, lower clamp 2, pressure transducers from the elevator no-load coefficient of balance pick-up unit of return function.Upper fixture 1 is directly installed on the top of hydraulic cylinder 6, and lower clamp 2 is directly installed on the below of hydraulic cylinder 6, and hydraulic cylinder 6 is for realizing the lifting to lower clamp 2.Two hydraulic cylinders 6 are connected with hydraulic pump 7 by hydraulic tube 8 simultaneously, and hydraulic pump 7 provides power to two hydraulic cylinders 6 simultaneously.Hydraulic tube 8 connects, arranges pressure transducer, real-time, the automatic pressure detecting hydraulic medium in hydraulic tube 8 of pressure transducer, so that judge the pulling force etc. of hydraulic cylinder 6.In order to realize the self-return of hydraulic cylinder 6, also namely impel the hydraulic stem auto-extending of hydraulic cylinder 6, the present embodiment comprises the spring 5 as return mechanism, and hydraulic cylinder 6 is single-action hydraulic cylinder.Again as shown in Figure 2, spring 5 is located in the cylinder body 61 of hydraulic cylinder 6, below the piston 62 being specifically positioned at hydraulic cylinder 6.Spring 5 is Compress Spring, and its tension force is for driving piston rod 63 return of hydraulic cylinder 6, stretching out.The pulling force sensor of certain second embodiment except adopting pressure transducer to replace the first embodiment, other features of the first embodiment all can be used in the second embodiment.
To sum up analyze, compared with prior art, advantage of the present utility model and beneficial effect are:
One, the utility model by design hydraulic cylinder 6 from return function, can make pick-up unit after each test, hydraulic cylinder 6 all gets back to initial position, can reduce the step of initial adjustment.
Two, pick-up unit of the present utility model has advantage that is simple to operate, safe operation process, and measure data precision is high.
Three, dynamic and static for balance coefficient of elevator detection method combines by the utility model, wire rope 8 compensated chain (rope), trailing cable can be analyzed on the impact of coefficient of balance, can analyze simultaneously elevator dynamic time lead the impact of boots frictional resistance on measurement data.
Four, compared with pick-up unit existing with our company, improve hoisting way, have employed the structure that hydraulic cylinder 6 directly promotes, prevent because the problem of the unreliability of prior art middle pulley, easily generation unbalance loading.
As known by the technical knowledge, the utility model can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Allly all to be included in the utility model within the scope of the utility model or being equal to the change in scope of the present utility model.
Claims (9)
1. one kind has the elevator no-load coefficient of balance pick-up unit from return function, comprise fixture, hydraulic cylinder, lower clamp, to be connected sensor to measure pulling force with described hydraulic cylinder, described upper fixture is arranged on the top of described hydraulic cylinder, described lower clamp is arranged on the below of described hydraulic cylinder, and described hydraulic cylinder is for realizing the lifting to described lower clamp; It is characterized in that, also comprise return mechanism, described hydraulic cylinder is single-action hydraulic cylinder, and described return mechanism is located on described hydraulic cylinder, and for driving described hydraulic cylinder return, hydraulic stem stretches out.
2. the elevator no-load coefficient of balance pick-up unit had from return function according to claim 1, it is characterized in that, described sensor is pulling force sensor, and described pulling force sensor is arranged between described upper fixture and described hydraulic cylinder.
3. the elevator no-load coefficient of balance pick-up unit had from return function according to claim 1, it is characterized in that, described sensor is pressure transducer, described hydraulic cylinder is connected with a hydraulic pump by a hydraulic tube, described pressure transducer is located on described hydraulic tube, realizes the measurement to the pulling force of hydraulic cylinder with the pressure detecting hydraulic medium in described hydraulic tube.
4. the elevator no-load coefficient of balance pick-up unit had from return function according to any one of claims 1 to 3, it is characterized in that, described return mechanism is a spring, and described spring housing is located on the hydraulic stem of described hydraulic cylinder.
5. the elevator no-load coefficient of balance pick-up unit had from return function according to any one of claims 1 to 3, it is characterized in that, described return mechanism is a spring, described spring be arranged on described hydraulic cylinder cylinder interior and below the piston being positioned at described hydraulic cylinder.
6. the elevator no-load coefficient of balance pick-up unit had from return function according to any one of claims 1 to 3, it is characterized in that, also comprise hydraulic pump, described hydraulic pump is connected with the hydraulic stem chamber of described hydraulic cylinder, and described hydraulic pump is manual pump.
7. the elevator no-load coefficient of balance pick-up unit had from return function according to any one of claims 1 to 3, is characterized in that, described hydraulic cylinder is along putting or be upside down located between described upper fixture, lower clamp.
8. the elevator no-load coefficient of balance pick-up unit had from return function according to any one of claims 1 to 3, is characterized in that, is screwed or is directly inserted by screw rod to be connected and fixed between described hydraulic cylinder and described upper fixture, lower clamp.
9. the elevator no-load coefficient of balance pick-up unit had from return function according to any one of claims 1 to 3, it is characterized in that, also comprise data presentation device, described data presentation device is connected with described pulling force sensor telecommunication by wired or wireless mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520517748.9U CN204944746U (en) | 2015-07-16 | 2015-07-16 | There is the elevator no-load coefficient of balance pick-up unit from return function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520517748.9U CN204944746U (en) | 2015-07-16 | 2015-07-16 | There is the elevator no-load coefficient of balance pick-up unit from return function |
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|---|---|
| CN204944746U true CN204944746U (en) | 2016-01-06 |
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|---|---|---|---|
| CN201520517748.9U Expired - Fee Related CN204944746U (en) | 2015-07-16 | 2015-07-16 | There is the elevator no-load coefficient of balance pick-up unit from return function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004481A (en) * | 2015-07-16 | 2015-10-28 | 广州特种机电设备检测研究院 | Elevator no-load balance coefficient detection apparatus with automatic return function |
| CN108414348A (en) * | 2018-05-07 | 2018-08-17 | 绍兴文理学院 | A kind of true triaxial test system and its implementation of test rock |
| CN109113733A (en) * | 2018-08-28 | 2019-01-01 | 常州大学 | Simple fill out sand tube compaction apparatus |
-
2015
- 2015-07-16 CN CN201520517748.9U patent/CN204944746U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004481A (en) * | 2015-07-16 | 2015-10-28 | 广州特种机电设备检测研究院 | Elevator no-load balance coefficient detection apparatus with automatic return function |
| CN108414348A (en) * | 2018-05-07 | 2018-08-17 | 绍兴文理学院 | A kind of true triaxial test system and its implementation of test rock |
| CN108414348B (en) * | 2018-05-07 | 2020-05-26 | 绍兴文理学院 | True triaxial test system for testing rock and implementation method thereof |
| CN109113733A (en) * | 2018-08-28 | 2019-01-01 | 常州大学 | Simple fill out sand tube compaction apparatus |
| CN109113733B (en) * | 2018-08-28 | 2022-06-17 | 常州大学 | Simple sand filling pipe compacting device |
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