CN214989522U - Elevator weighing system and elevator - Google Patents

Abstract

The utility model discloses an elevator weighing system and elevator, the elevator weighing system includes upper and lower weighing touch panels, sensor module and a plurality of fag end subassembly that contains the fag end spring, the sensor module is installed respectively on upper and lower weighing touch panel, it also includes at least two sets of feedback springs, at least two sets of feedback springs are arranged between upper and lower weighing touch panels and the upper and lower ends of each feedback spring act on upper and lower weighing touch panels respectively; each rope head component containing a rope head spring is arranged on the upper weighing touch panel and downwards passes through the lower weighing touch panel to be connected with the hoisting rope; the rope head assembly containing the rope head spring is not contacted with the lower weighing touch plate. The utility model discloses an elevator contains above-mentioned elevator weighing system. Compared with the prior art, the utility model has the following characteristics and effect: 1. the accuracy is high; 2. the reliability is high; 3. the structure is simple; 4. the universality is strong; 5. the applicability is strong.

Description

Elevator weighing system and elevator

Technical Field

The utility model relates to an elevator technical field, in particular to elevator weighing system and elevator.

Background

The elevator load measurement is fed back to the control system through the weighing system, and the control system judges and controls the motor to output proper force to drive the elevator car to normally run. The rope end weighing mode is convenient to install and widely applied.

At present, two rope end weighing modes are mainly adopted, one mode is that a rope end spring deforms after being pulled by a hauling rope to serve as a reference amount, a sensor detects displacement change, changes of electric signals are generated and transmitted to a control system, and the actual load capacity of a lift car is judged. Still another rope end weighing mode adopts dedicated weighing sensor, leans on self to warp inside to detect, obtains the current variation through adapter device, and consequently the scheme needs to cooperate the local structure commonality of design to be relatively poor, and is with high costs less with using.

The structure of weighing of rope end that uses the rope end spring as the detection object on the market more, refer to fig. 1, it is in free state to be connected a common touch panel 2 of weighing by a plurality of rope end spring 1 upper end, the lower extreme is also being connected a common touch panel 3 of weighing and is in fixed state, sensor module 4 installs two touch panels 2 of weighing from top to bottom, between 3, through detecting 2 touch panels 2 of weighing, 3 the interval change and produce the magnetic field change, change the current change again, it changes to reachd the load through control system, at last according to load control motor output torque size. The weighing system is poor in stability, and the phenomenon that the control system misjudges the load and aggravates uneven tension of the hoisting rope can be caused when the weighing system runs for a period of time.

The reasons for misjudgment of the control system are as follows: theoretically, the upper weighing touch plate 2 and the lower weighing touch plate 3 are always kept parallel to each other in the whole load change process, but in the actual situation, the height change of each independent rope head spring 1 is inconsistent due to the fact that the tension of each hoisting rope 5 changes along with the running time, the load changes, the displacement of the sensor assembly 4 is not changed, or the load does not change, the displacement changes, the measurement precision is influenced, and the control system misjudges.

The reason for the uneven tension is: originally, the rope head assembly 6 of each hauling rope 5 is provided with one rope head spring 1, the rope head spring 1 can compensate the tension difference of the hauling ropes 5 within a certain range, and the weighing touch plates 2 and 3 limit the free expansion of the rope head springs 1, so that the effect of compensating the uneven tension of the hauling ropes 5 is lost.

Therefore, an accurate and practical weighing system is needed, signals are transmitted to the control system, system misjudgment is avoided, and the existing structure and the elevator running quality are not influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the control system who exists to current rope fastening weighing structure who uses the rope fastening spring as the detection object judge to the load mistake and aggravate the uneven phenomenon scheduling problem of towline tension and provide an accurate, practical elevator weighing system and elevator, it improves the accuracy of current elevator car weighing technique from the design principle, for the accurate feedback that provides of judgement of control system, the reasonable work of control motor improves the elevator and takes the travelling comfort.

In order to realize the purpose of the utility model, the elevator weighing system comprises an upper weighing touch panel, a lower weighing touch panel, a sensor assembly and a plurality of rope head assemblies containing rope head springs, wherein the sensor assemblies are respectively arranged on the upper weighing touch panel and the lower weighing touch panel; each rope head assembly containing a rope head spring is arranged on the upper weighing touch panel and downwards passes through the lower weighing touch panel to be connected with the hoisting rope; the rope head assembly containing the rope head spring is not in contact with the lower weighing touch panel.

In a preferred embodiment of the present invention, each feedback spring is installed between the upper and lower weight contact plates through a guide bolt.

In a preferred embodiment of the invention, the feedback spring is distributed outside the rope head assembly comprising the rope head spring in a direction perpendicular to the hoisting rope.

In the utility model discloses a preferred embodiment, the interval of two adjacent feedback springs of same direction is the interval 1.2 ~ 2 times of two adjacent fag end subassemblies that contain the fag end spring.

In a preferred embodiment of the present invention, the design value of the elastic coefficient of the feedback spring is 10-20 mm according to the adjustment value of the actual load change.

The utility model discloses an elevator contains foretell elevator weighing system.

Elevator control system reachs the load through elevator weighing system, accurate control tows the motor and gives power, through the normal upper and lower operation of towline drive car and counter weight, rope head subassembly that contains the rope head spring is fixed on last touch panel of weighing, it arranges 2 at least groups feedback spring to weigh between touch panel and the lower touch panel of weighing, sensor assembly installs on last, on the lower touch panel of weighing, it compresses feedback spring and produces the displacement change to weigh touch panel compression, sensor assembly detects the displacement change and converts the signal of telecommunication into, feed back to elevator control system, elevator control system is according to the signal of telecommunication and the load corresponding value that preset, the accurate load capacity that reachs the car this moment, promote elevator operation quality.

Compared with the prior art, the utility model has the following characteristics and effect:

1. the accuracy is high: the rope hitch spare of towline closes to be used in last touch panel of weighing, again transmits to resultant force to feedback spring, guarantees that feedback spring warp can be accurate feedback load change, the utility model discloses an elevator weighing system uses the displacement of detecting feedback spring as the reference volume, and feedback spring is linear good, and whole elevator weighing system accuracy is high.

2. The reliability is high: the sensor assembly for detecting displacement is low in cost relative to other types of sensors, high in universality, wide in application and high in reliability.

3. The structure is simple: in current elevator rope head structure, with a plurality of rope head subassembly bed hedgehopping that contain the rope head spring that have now on the supreme contact of weighing and stack feedback spring and sensor module can, need not design special structure, installation and debugging are simple and convenient.

4. The universality is strong: the elevator of each load specification, a plurality of rope assembly atress scope that contain the rope end spring is big, uses the utility model discloses the structure can adopt a plurality of rope end assemblies that contain the rope end spring of increase and decrease and feedback spring quantity and change feedback spring's rigidity reply, need not to sensor assembly specification change, and the commonality is strong.

5. The applicability is strong: the utility model discloses the feedback spring deformation system of scheme is independent of former fag end spring, can not cause adverse effect to the independent tensioning compensating action of current fag end spring, and installation adjustment is convenient.

Drawings

Fig. 1 is a schematic structural view of a conventional elevator weighing system.

Fig. 2 is the utility model discloses embodiment 1's elevator weighing system structure sketch map.

Fig. 3 is the utility model discloses embodiment 2's elevator weighing system structure sketch map.

Fig. 4 is the elevator operation principle schematic diagram of the utility model.

Fig. 5 is the utility model discloses elevator weighing system's theory of operation sketch map.

Detailed Description

The invention is further described below with reference to the accompanying drawings and the detailed description.

Example 1

Referring to fig. 2, the elevator weighing system shown in the figure comprises an upper weighing touch panel 2, a lower weighing touch panel 3, a sensor assembly 4 and a plurality of rope head assemblies 6 containing rope head springs 1, wherein the sensor assemblies 4 are respectively arranged on the upper weighing touch panel 2 and the lower weighing touch panel 3.

The utility model of this embodiment is characterized in that: the weighing device is characterized by further comprising at least two groups of feedback springs 7, wherein each feedback spring 7 is installed between the upper weighing touch plate 2 and the lower weighing touch plate 3 through a guide bolt 8, and the upper end and the lower end of each feedback spring 7 act on the upper weighing touch plate 2 and the lower weighing touch plate 3 respectively.

In addition, in the embodiment, each rope head assembly 6 containing the rope head spring 1 is installed on the upper weighing touch panel 2 in a raised mode, and each rope head assembly 6 containing the rope head spring 1 downwards penetrates through the lower weighing touch panel 3 to be connected with the hoisting rope 5; the rope head assembly 6 containing the rope head spring 1 is not in contact with the lower weighing touch panel 3, so that the resultant force of the rope head assembly 6 of the hauling rope 5 acts on the upper weighing touch panel 2, and then the resultant force is transmitted to the feedback spring 7, and the deformation of the feedback spring 7 can accurately feed back load change. In addition, the deformation system of the feedback spring 7 is independent of the original rope head spring 1, adverse effects on the independent tensioning compensation effect of the existing rope head spring 1 cannot be caused, the installation and the adjustment are convenient, meanwhile, a special structure does not need to be designed, and the installation and the debugging are simple and convenient.

For the elevator of each load specification, the rope assembly 6 that a plurality of contain rope head spring 1 atress scope is big, uses this embodiment structure, can adopt the rope head assembly 6 that increases and decreases a plurality of contain rope head spring 1 and feedback spring 7 quantity and change feedback spring 7's rigidity to deal with, need not to sensor assembly 4 specification change, and the commonality is strong. In addition, the sensor assembly 4 of the embodiment only needs to detect the displacement between the upper weighing touch panel 2 and the lower weighing touch panel 3, so that only the sensor assembly 4 for detecting the displacement can be adopted, and compared with other types of sensors, the sensor assembly is low in cost, high in universality, wide in application range and high in reliability.

This embodiment is intended to describe the embodiment in which all the feedback springs 7 are disposed outside the rope end assembly 6 including the rope end spring 1 in the direction perpendicular to the hoist rope 5, and certainly not limited to the outside of the rope end assembly 6 including the rope end spring 1, but may be disposed between two adjacent rope end assemblies 6. But all the feedback springs 7 are distributed on the outer side of the rope end assembly 6 containing the rope end spring 1, so that the structure has better anti-overturning capability, can resist transverse force vertical to the rope end assembly 6 and has stable structure.

When distributing all the feedback springs 7 outside the rope end assembly 6 containing the rope end spring 1, all the feedback springs 7 can be distributed outside the rope end assembly 6 containing the rope end spring 1 in a symmetrical manner, so that the deformation of each feedback spring 7 after being loaded by the traction rope 5 can be consistent. The upper weighing touch plate 2 moves up and down along with the change of the load to drive the sensor assembly 4, so that the change of the load and the adjustment value X can accurately feed back the actual load. Of course, the rope end components are not limited to be symmetrically distributed on the outer side of the rope end component 6 of the rope end containing spring 1, and can be distributed according to the requirement.

When all the feedback springs 7 are distributed on the outer side of the rope assembly 6 containing the rope head spring 1 in a symmetrical mode or an asymmetrical mode, the distance L2 between every two adjacent feedback springs 7 in the same direction is 1.2-2 times of the distance L1 between every two rope head assemblies 6 containing the rope head springs 1.

In addition, when the feedback springs 7 are selected, the designed elastic coefficient value of each feedback spring 7 is 10-20 mm according to the actual load change adjustment value X.

Example 2

The elevator weighing system of this embodiment differs from the elevator weighing system of embodiment 1 in that: the number of rope assemblies 6 containing rope springs 1 and feedback springs 7 is different to adapt to elevators with different loads.

When the elevator load system of embodiments 1 and 2 is applied to an elevator, referring to fig. 4, the elevator load system a, the hoisting ropes 5, the car 9, the hoisting motor 10, and the counterweight 11 of embodiments 1 and 2 are included, and the composition of the elevator load system a, the hoisting ropes 5, the car 9, the hoisting motor 10, and the counterweight 11 is not different from that of the existing elevator system, and therefore, the description thereof is omitted.

Referring to fig. 5, after the elevator load system of embodiments 1 and 2 is applied to an elevator, the elevator control system 11 obtains a load through the elevator weighing system, accurately controls the output force of the traction motor 10, drives the car 9 and the counterweight 11 to normally move up and down through the traction rope 5, and the rope head assembly 6 containing the rope head spring 1 is fixed on the upper touch panel to apply an acting force to the upper weighing touch panel.

The load change of car 8 through the haulage rope, contain the fag end subassembly of fag end spring, go up the touch panel compression feedback spring that weighs and produce the displacement change, and sensor assembly 4 detects the displacement change and converts the signal of telecommunication into, feeds back to elevator control system 12, and elevator control system 12 corresponds the value according to preset's signal of telecommunication and load, and the accurate bearing capacity who reachs car 9 this moment promotes elevator operation quality.

Claims (6)

1. An elevator weighing system comprises an upper weighing touch panel, a lower weighing touch panel, a sensor assembly and a plurality of rope head assemblies containing rope head springs, wherein the sensor assemblies are respectively arranged on the upper weighing touch panel and the lower weighing touch panel; each rope head assembly containing a rope head spring is arranged on the upper weighing touch panel and downwards passes through the lower weighing touch panel to be connected with the hoisting rope; the rope head assembly containing the rope head spring is not in contact with the lower weighing touch panel.

2. An elevator weighing system as defined in claim 1, wherein each feedback spring is mounted between said upper and lower weigh contact plates by a guide bolt.

3. An elevator weighing system according to claim 1, wherein said feedback spring is distributed outside of said rope head assembly containing said rope head spring in a direction perpendicular to said hoisting rope.

4. The elevator weighing system of claim 1, wherein the distance between two adjacent feedback springs in the same direction is 1.2-2 times the distance between two rope head assemblies containing rope head springs.

5. The elevator weighing system of claim 1, wherein the design value of the spring constant of the feedback spring is 10-20 mm according to the actual load change adjustment value.

6. Elevator, characterized in that it comprises an elevator weighing system according to any of claims 1 to 5.

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