CN216050456U

CN216050456U - Portable elevator balance coefficient testing arrangement

Info

Publication number: CN216050456U
Application number: CN202121801679.6U
Authority: CN
Inventors: 冯双昌; 陈杰; 梁海珍; 方堃; 陈不凡
Original assignee: Shanghai Special Equipment Supervision and Inspection Technology Institute
Current assignee: Shanghai Special Equipment Supervision and Inspection Technology Institute
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2022-03-15
Anticipated expiration: 2031-08-04

Abstract

The utility model discloses a portable elevator balance coefficient testing device, which is characterized in that: the turning gear comprises a data acquisition device and a display processing device, wherein the data acquisition device comprises a measuring rod, a torque sensor and a signal processing module, the two ends of the measuring rod are fixed on a turning gear hand wheel rotating shaft, the torque sensor and the signal processing module are arranged on the measuring rod, the torque sensor is used for measuring the torque of the turning gear hand wheel rotating shaft, and the torque sensor is connected with the signal processing module to transmit measured torque signals to the signal processing module for processing and then to transmit the processed torque signals to the display processing device for displaying. According to the utility model, the data of 40% and 50% rated load capacity of the elevator when two sides of the elevator car move up and down are measured, and the elevator balance coefficient can be quickly and effectively obtained through data processing. The appearance size is small, light in weight, portable, convenient operation, low in labor intensity, work efficiency is high.

Description

Portable elevator balance coefficient testing arrangement

Technical Field

The utility model relates to a portable elevator balance coefficient testing device.

Background

The elevator balance coefficient is an important use parameter of the elevator, and directly influences the safety performance and the comfort performance of the traction drive elevator. The rated load capacity of the elevator, the weight of the counterweight and the weight of the empty car are the technical basis for calculating the balance coefficient, and the balance coefficient of the elevator is obtained by dividing the difference between the total weight of the counterweight device and the empty car by the rated load capacity of the elevator.

The selection of the balance coefficient needs to consider the working power and the traction condition of the traction machine and is an important guarantee for the energy conservation of the elevator. The weight of the car and the counterweight directly affects the selection of the steel wire ropes, the number of the steel wire ropes, the rope groove parameters of the traction sheave and the like, so that an efficient, accurate and reliable balance coefficient detection device is very needed to be found.

According to the requirements of GB7588-2003 the balance factor of a traction drive elevator should be in the range of 0.4-0.5. After the elevator is installed, a balance coefficient test can be carried out, and within a long period of time, the elevator does not decorate the elevator car, increase or decrease the number of counterweight blocks, and the balance coefficient of the elevator can not be obviously changed. According to the current inspection gauge TSG T7001-2009, a balance coefficient testing method mainly adopts a current-load curve method, the method needs to repeatedly carry weights, measure the current change of a motor and obtain a specific balance coefficient value by fitting a current curve and a load curve, but the method has the defects of high labor intensity, long operation time, easy error generation during measurement of multiple data and influence on the accuracy of a measured value.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the existing balance coefficient test method has the disadvantages of high labor intensity, long operation time and easy error generation when measuring multiple data.

In order to solve the problems, the technical scheme of the utility model is to provide a portable elevator balance coefficient testing device, which is characterized in that: the turning gear comprises a data acquisition device and a display processing device, wherein the data acquisition device comprises a measuring rod, a torque sensor and a signal processing module, the two ends of the measuring rod are fixed on a turning gear hand wheel rotating shaft, the torque sensor and the signal processing module are arranged on the measuring rod, the torque sensor is used for measuring the torque of the turning gear hand wheel rotating shaft, and the torque sensor is connected with the signal processing module to transmit measured torque signals to the signal processing module for processing and then to transmit the processed torque signals to the display processing device for displaying.

Preferably, two ends of the measuring rod are fixed on a rotating shaft of a turning hand wheel through clamping parts.

Preferably, the clamping component comprises a left clamp and a right clamp, the left clamp comprises a first clamp, a first left bolt and a second left bolt, the left end of the measuring rod is fixed on the first clamp through the first left bolt, and the first clamp is fixed on a turning hand wheel rotating shaft through the second left bolt;

the right clamping device comprises a clamp II, a first right bolt and a second right bolt, the right end of the measuring rod is fixed on the clamp II through the first right bolt, and the clamp II is fixed on a turning hand wheel rotating shaft through the second right bolt.

Preferably, the signal processing module comprises a left torque amplifier, a right torque amplifier, an a/D conversion module, a left transmitter and a right transmitter, the torque sensor is connected with the input end of the a/D conversion module through the left torque amplifier and the right torque amplifier, respectively, the output end of the a/D conversion module is connected with the display processing device through the left transmitter and the right transmitter, respectively, and transmits the processed left and right torque signals to the display processing device.

Preferably, the left transmitter and the right transmitter are bluetooth modules, and signal transmission is realized between the signal processing module and the display processing device through bluetooth.

Preferably, the display processing device is provided with an on/off knob for turning on/off the display processing device, a reading button for reading data, a deleting button for deleting data, and a display screen for displaying data.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, when the car and the counterweight loaded with 40%, 45% and 50% of weights are respectively positioned in the middle of the hoistway at the same level or at the same height position of the hoistway, the weight difference between the car and the counterweight at two sides is measured, and the elevator balance coefficient can be quickly and effectively obtained through comparison calculation. Theoretically, when the car is loaded with 50% of the rated load, the weight difference between the counterweight and the car at the same level is 0, namely the balance coefficient is 0.5. The device has small appearance size, light weight, convenient carrying and operation, low labor intensity and high working efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention installed on the rotating shaft of a turning hand wheel;

FIG. 2 is a schematic diagram of a portable elevator balance coefficient testing device of the present invention;

fig. 3 is a schematic structural diagram of the data acquisition device.

Detailed Description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in figure 1, the elevator balance coefficient testing device is mainly used for elevators with turning hand wheels with rotating shafts, and the manual emergency operation device is mainly used for leveling or moving a car to a safe floor by the turning hand wheels after a brake is released. The turning gear is arranged on the outer side of the sheave groove of the traction sheave, and the turning hand wheel is installed, so that rescue can be rapidly and efficiently unfolded after the elevator breaks down.

The balance coefficient K of the elevator is (W-G)/Q, the weight is the total weight of the counterweight device, G is the self weight of the car, Q is the rated load capacity, the total weight of the counterweight device is larger than the self weight of the empty car, and the balance coefficient meeting the requirement is 0.4-0.5, namely when the weight is 40%, 45% or 50% of the rated load capacity of the car device, the difference value of W, G is obtained by measuring when the counterweight and the car are in the horizontal position in the shaft, and then the K can be directly calculated.

The testing device is characterized in that under the condition that the weight of the lift car is 40%, 45% or 50% of rated load capacity, the lift car and the counterweight device are moved to the middle of a shaft at the same level or the position at the same height, a manual barring is held tightly, a brake is opened manually, and the torque value of the lift car is measured when the weight of 40%, 45% or 50% of rated load capacity is loaded by utilizing gravity or positive and negative application forces on two sides. When the brake is opened and the driving wheel rotates towards the counterweight due to gravity, the torque value at the moment is recorded. The weight with 50% rated load loaded on the car and the counterweight device are in the same horizontal position, and the counterweight device and the car are in a balanced state due to the equal weight, and the basis for preliminarily judging the balance coefficient is taken. When the weight of the counterweight device is larger than that of the lift car loaded with a weight with 50% of rated load capacity, namely when the driving wheel rotates towards the counterweight side, the balance coefficient is too large, the weight of the counterweight device is reduced, when the driving wheel rotates towards the lift car side or does not rotate, the lift car loaded with the weight with 40% of rated load capacity can be measured, and the weight difference between the counterweight device and the lift car can be measured; if the car loads 40% rated loading capacity weight, when the drive wheel rotates to the car side, should increase counterweight device weight in time, when the drive wheel rotates to the counterweight side, can continue to measure the weight difference when counterweight device and car load 45% weight, through contrastive analysis, can obtain elevator balance coefficient fast, effectively.

As shown in fig. 2 and 3, the portable elevator balance coefficient testing device of the utility model comprises a data acquisition device and a display processing device, wherein the data acquisition device is a transmitting part which rotates along with a shaft and acquires a torque signal, the display processing device is a signal receiving, converting and displaying part which can be held by hands, and the two parts are communicated through power supply and are connected with bluetooth to realize signal transmission. The display processing device is provided with a start/stop knob for starting/stopping the display processing device, a reading button for reading data, a deleting button for deleting the data and a display screen for displaying the data, test data can be stored, start and stop are controlled by turning the start/stop knob, the reading and deleting buttons can sort the data, and finally an accurate balance coefficient is obtained.

The data acquisition device comprises a measuring rod 4, a torque sensor 7 and a signal processing module, and two ends of the measuring rod 4 are fixed on a turning hand wheel rotating shaft 5 through clamping parts. The clamping part comprises a left clamping part and a right clamping part, the left clamping part comprises a first hoop 2, a first left bolt 11 and a second left bolt 12, the left end of the measuring rod 4 is fixed on the first hoop 2 through the first left bolt 11, and the first hoop 2 is fixed on the turning hand wheel rotating shaft 5 through the second left bolt 12. The right clamping comprises a clamp II 3, a first right bolt 13 and a second right bolt 14, the right end of the measuring rod 4 is fixed on the clamp II 3 through the first right bolt 13, and the clamp II 3 is fixed on the turning hand wheel rotating shaft 5 through the second right bolt 14.

The torque sensor 7 is fixed on the measuring rod 4, the turning hand wheel rotating shaft 5 which is subjected to the torque force is staggered relatively around the axis to form an angle, the measuring rod 4 clamped on the turning hand wheel rotating shaft 5 can deform to a certain extent at the moment, and the torque sensor 7 fixed on the measuring rod can measure the torque of the turning hand wheel rotating shaft 5.

The signal processing module comprises a left torque amplifier 71, a right torque amplifier 72, an A/D conversion module, a left transmitter 61 and a right transmitter 62, the torque sensor 7 is connected with the input end of the A/D conversion module through the left torque amplifier 71 and the right torque amplifier 72 respectively, and the output end of the A/D conversion module is connected with the left transmitter 61 and the right transmitter 62 respectively. The weak torque signal obtained by the torque sensor 7 is amplified by the left torque amplifier 71 and the right torque amplifier 72, then is subjected to a/D conversion, and then is sent to the display processing device through the left transmitter 61 and the right transmitter 62. The left transmitter 61 and the right transmitter 62 are Bluetooth transmission modules, the display processing device is provided with corresponding Bluetooth modules, the display processing device receives measurement signals from two sides, the torque signals are processed through D/A conversion to obtain torque values of the counterweight loading weight and the weight of 40%, 45% and 50% of rated load weight loaded on the car, the torque values are converted to obtain weight difference values of the counterweight loading weight and the weight of 40%, 45% and 50% of rated load weight loaded on the car, and the weight difference values are compared and calculated to obtain an elevator balance coefficient.

The utility model can quickly obtain the balance coefficient range through the elevator balance coefficient testing device and confirm whether the balance coefficient range meets the requirements, and the main data characteristics of the utility model are that when the lift car bears 40 percent of rated load capacity, as shown in figure 1, the weight of the counterweight side is greater than the weight of the lift car side, and when the lift car bears 50 percent of rated load capacity, the weight of the counterweight side is equal to the weight of the lift car side, and the weight of the lift car side is not greater than the weight of the counterweight side.

Claims

1. The utility model provides a portable elevator balance coefficient testing arrangement which characterized in that: including data acquisition device and display processing device, data acquisition device includes that both ends fix measuring stick (4) on barring hand wheel pivot (5), establish torque sensor (7), the signal processing module on measuring stick (4), torque sensor (7) are used for measuring the moment of torsion size of barring hand wheel pivot (5), and torque sensor (7) are connected with signal processing module and send the torque signal who records to display processing device after handling to signal processing module and handle and show.

2. The portable elevator balance coefficient testing device of claim 1, wherein: and two ends of the measuring rod (4) are fixed on a turning hand wheel rotating shaft (5) through clamping parts.

3. The portable elevator balance coefficient testing device of claim 2, wherein: the clamping component comprises a left clamping part and a right clamping part, the left clamping part comprises a first hoop (2), a first left bolt (11) and a second left bolt (12), the left end of the measuring rod (4) is fixed on the first hoop (2) through the first left bolt (11), and the first hoop (2) is fixed on the turning hand wheel rotating shaft (5) through the second left bolt (12);

the right side centre gripping includes clamp two (3), first right bolt (13) and second right bolt (14), the right-hand member of measuring stick (4) is fixed on clamp two (3) through first right bolt (13), clamp two (3) are fixed on barring hand wheel pivot (5) through second right bolt (14).

4. The portable elevator balance coefficient testing device of claim 1, wherein: the signal processing module comprises a left torque amplifier (71), a right torque amplifier (72), an A/D conversion module, a left transmitter (61) and a right transmitter (62), the torque sensor (7) is connected with the input end of the A/D conversion module through the left torque amplifier (71) and the right torque amplifier (72), the output end of the A/D conversion module is connected with the display processing device through the left transmitter (61) and the right transmitter (62), and the processed left and right torque signals are transmitted to the display processing device.

5. The portable elevator balance coefficient testing device of claim 4, wherein: the left transmitter (61) and the right transmitter (62) are Bluetooth modules, and signal transmission is realized between the signal processing module and the display processing device through Bluetooth.

6. The portable elevator balance coefficient testing device of claim 1, wherein: the display processing device is provided with a start/stop knob for starting/stopping the display processing device, a reading button for reading data, a deleting button for deleting data and a display screen for displaying data.