CN216512235U - Measuring device for judging elevator stopping distance qualification by using 125% rated load - Google Patents

Abstract

The utility model discloses a measuring device for judging the qualification of elevator braking distance by using 125 percent rated load, wherein a laser measuring host is arranged at the top of an elevator car, a laser light source of the laser measuring host is connected with a single chip microcomputer, the laser light source is vertically aligned with the top space position of an elevator shaft, the single chip microcomputer is in circuit connection with a Bluetooth transmission module, the Bluetooth transmission module is connected with a handheld control end, a trigger for synchronously triggering a braking microswitch and a wireless data transmitting module are both connected with a circuit board, the wireless data transmitting module is connected with the handheld control end, and the load is arranged in the elevator car. The utility model is characterized in that: the test result is accurate, and measuring effect is good, and inspection efficiency is high, makes things convenient for the survey crew to know the whole operational aspect, and the curve learns the braking distance and judges elevator security and reliability when simulating 125% rated load through the last linear curve of the load of loading different kilograms, has stopped the potential safety hazard of elevator when loading 125% rated load measurement greatly, reduces the accident rate.

Description

Measuring device for judging elevator stopping distance qualification by using 125% rated load

Technical Field

The utility model relates to the technical field of elevator detection, in particular to a measuring device for judging the qualification of elevator stopping distance by using 125% rated load.

Background

In recent years, the rapid development of large-scale infrastructure construction and real estate industries in China greatly drives the development of elevator machinery manufacturing industry in China, and elevators in China are increasingly in the world to make a strong country.

The ascending braking test and the descending braking test are two important tests in elevator inspection, the main purpose of the ascending braking test is direct verification of the traction capacity of the elevator and indirect verification of the braking test of the brake, the descending braking test is combination of the performance and the traction capacity of the brake, and the ascending braking test not only has the inspection of the braking capacity of the brake, but also has the inspection of the traction capacity under the working condition of descending emergency braking of the elevator.

The method for measuring the braking distance of the elevator in China at present comprises the following steps that firstly, the elevator is stopped at the upper part of the travel on a flat layer, a mark is made on a traction steel wire rope with the highest point of a traction wheel being in the same level with the horizontal plane, a lift car is unloaded and is added with 125% of rated load weight, one person sends an instruction when the lift car is driven upwards or downwards at a rated speed to reach the moment that a steel wire rope mark point reaches the uppermost part of the traction wheel, the other person simultaneously disconnects a main power switch of the elevator, the highest point on the traction wheel after braking is taken as a reference, a mark point is made on the steel wire rope as a measuring point, the distance between the original mark point of the traction steel wire rope and the measuring point is measured, and the distance is the upward or downward braking distance of the elevator, and the inspection method has the defects that: the detection is influenced by human factors greatly, two persons are required to be matched, if the two persons are not matched, the measurement error is larger, the other elevator stopping distance detection method is used for detecting the elevator stopping distance, so that the detection personnel do not need to mark on a steel wire rope for convenience, a power switch of the elevator is switched off, the sliding distance of the elevator is visually observed, and the detection method has larger error, so that the two methods are not ideal elevator stopping distance measurement methods, and in addition, when the elevator car is in no-load and 125% of rated load weight is added, the elevator car parts are easily damaged, and property loss is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide a measuring device for judging the qualification of the stopping distance of an elevator by using 125 percent of rated load.

The technical scheme adopted by the utility model for realizing the purpose is as follows: the measuring device for judging the qualification of the elevator stopping distance by using 125 percent of rated load comprises a laser measuring host, a Bluetooth transmission module, a handheld control end, a synchronous triggering stopping microswitch and a load, wherein the laser measuring host is placed at the top of an elevator car and comprises a laser light source and a single chip microcomputer, the laser light source is in circuit connection with the single chip microcomputer, the laser light source is vertically aligned to the top space position of an elevator shaft, the single chip microcomputer is in circuit connection with the Bluetooth transmission module, the Bluetooth transmission module is in wireless signal connection with the Bluetooth module of the handheld control end, the synchronous triggering stopping microswitch comprises a trigger, a circuit board and a wireless data transmitting module, the trigger and the wireless data transmitting module are both connected with the circuit board, and the wireless data transmitting module is in wireless signal connection with a wireless data receiving module of the handheld control end, the load is placed in the elevator car.

The laser measurement host computer still includes the host computer shell, the host computer shell is placed at elevator car top, laser light source installs on the host computer shell, the singlechip is connected with the host computer battery, installs the host computer switch between the two, singlechip, host computer battery all set up in the host computer shell, the host computer switch is installed on the host computer shell.

The synchronous trigger braking microswitch also comprises a trigger shell, the trigger is arranged on the trigger shell, the circuit board is connected with a trigger battery, a trigger switch is arranged between the circuit board and the trigger battery, the circuit board and the trigger battery are both arranged in the trigger shell, and the trigger switch is arranged on the trigger shell.

The single chip microcomputer is connected with the Bluetooth transmission module through a data line.

The handheld control end is a mobile phone or a tablet computer or a notebook computer with a Bluetooth module and a wireless data receiving module.

The utility model is characterized in that: the synchronous trigger braking microswitch is combined with the laser measuring host machine to ensure that the test result is accurate, the measuring effect is good, the precision of judging the qualification of the measured elevator braking distance by measuring the 125 percent rated load of the elevator and the inspection efficiency of a measurer are greatly improved, the measurer can more conveniently know the whole running condition, the braking distance is known by the curve when the last linear curve of loads of different kilograms simulates the 125 percent rated load to judge the safety and the reliability of the elevator, various potential safety hazards of the elevator, such as a guide rail, a steel wire rope, a tractor, a guide shoe and the like, are greatly avoided when the 125 percent rated load of the elevator is loaded for measurement, and the accident rate is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural diagram of a laser measurement host according to the present invention.

Fig. 3 is a schematic diagram of a handheld control end of the present invention.

Fig. 4 is a schematic structural diagram of the synchronous trigger stop microswitch of the present invention.

Fig. 5 is a circuit schematic of the present invention.

Wherein: 1. the system comprises a laser measurement host 101, a host shell 102, a laser light source 103, a single chip microcomputer 104, a host battery 105, a host switch 2, a Bluetooth transmission module 3, a data line 4, a handheld control end 401, a Bluetooth module 402, a wireless data receiving module 5, a synchronous trigger stop microswitch 501, a trigger shell 502, a circuit board 503, a trigger battery 504, a trigger switch 505, a trigger 506, a wireless data transmitting module 6, a load 7, an elevator car 8 and an electric control cabinet.

Detailed Description

As shown in figures 1-5, the utility model relates to a measuring device for judging the qualification of elevator braking distance by 125 percent of rated load, which comprises a laser measuring host 1, a Bluetooth transmission module 2, a handheld control end 4, a synchronous trigger braking microswitch 5 and a load 6.

The handheld control terminal 4 is an electronic device with a bluetooth module 401 and a wireless data receiving module 402, and may be an electronic device such as a smart phone, a tablet computer, and a notebook computer.

The load 6 is a load of 0-1250 kg, the load is a stainless steel weight, the load 6 can be set to be a load of 200 kg, a load of 400 kg, a load of 600 kg and a load of 800 kg, and the loads 6 with different weights are placed in the elevator car 7 for measurement.

The laser measurement host 1 comprises a host shell 101, a laser light source 102 and a single chip microcomputer 103, wherein the host shell 101 is placed at the top of an elevator car 7, the laser light source 102 is installed on the host shell 101, the laser light source 102 vertically aligns to the top space position of an elevator shaft, the laser light source 102 is in circuit connection with the single chip microcomputer 103, the single chip microcomputer 103 is connected with a host battery 104, a host switch 105 is installed between the host switch and the host battery 104, the single chip microcomputer 103 and the host battery 104 are both arranged in the host shell 101, the host switch 105 is installed on the host shell 101, the single chip microcomputer 103 is in circuit connection with a Bluetooth transmission module 2 through a data line 3, and the Bluetooth transmission module 2 is in wireless signal connection with a Bluetooth module 401 of a handheld control end 4.

The synchronous trigger stop microswitch 5 comprises a trigger shell 501, a trigger 505, a circuit board 502 and a wireless data transmitting module 506, wherein the trigger 505 and the wireless data transmitting module 506 are both connected with the circuit board 502, the circuit board 502 is connected with a trigger battery 503, a trigger switch 504 is installed between the trigger 505 and the wireless data transmitting module 506, the trigger 505 and the trigger switch 504 are both installed on the trigger shell 501, the circuit board 502 and the trigger battery 503 are both arranged in the trigger shell 501, and the wireless data transmitting module 506 is in wireless signal connection with the wireless data receiving module 402 of the handheld control end 4.

The operation and implementation process of the utility model is as follows: whether a machine room is available or not, the first step is to stop the elevator car 7 at the bottommost layer and adjust the elevator to an overhaul state, then a person stands on the top of the elevator car 7, place the laser measurement host 1 on the top of the elevator car 7, vertically align the laser light source 102 with the top space position of a shaft, press the host switch 105 to enable the laser measurement host to be in a power-on state, at the moment, connect the singlechip 103 with the Bluetooth transmission module 2 by using the data wire 3, enable the Bluetooth transmission module 2 to be in a power-on state, start the hand-held control end 4 to enable the Bluetooth module 401 and the wireless data receiving module 402 to be in a working state, start the measurement software of the hand-held control end 4, enable the person to hold the hand-held control end 4 with the wireless data receiving module 402 to leave the top of the elevator car 7 to be close to the electric control cabinet 8 to prepare for measurement, and open the electric control cabinet 8 switch to adjust the elevator to be in a normal downlink running state during measurement, and starting a trigger switch 504 of the synchronous trigger stop microswitch 5, artificially controlling the electric control cabinet 8 to start the elevator car 7 to descend, wherein the elevator car 7 and the laser measuring host 1 are in a static state, the laser light source 102 of the laser measuring host 1 continuously works to send laser data signals to the singlechip 103, the data are filtered by the singlechip 103 and then sent to the Bluetooth transmission module 2 through the data line 3, the Bluetooth transmission module 2 is synchronously and wirelessly sent to the Bluetooth module 401 of the handheld control end 4 and then synchronously transmitted to the measurement software of the handheld control end 4, the current distance L1 is displayed, when the elevator car 7 runs to the middle layer, the trigger 505 of the synchronous trigger stop microswitch 5 synchronously triggers the stop switch of the electric control cabinet 8, the trigger 505 transmits stop signals to the circuit board 502, and the circuit board 502 transmits signals to the wireless data of the handheld control end 4 through the wireless data transmitting module 506 to connect the circuit board On the receiving module 402, the measurement software of the handheld control end 4 sends the instantaneous stopping signal to the bluetooth transmission module 2 through the bluetooth module 401 in a wireless manner, and then sends the instantaneous stopping signal to the single chip microcomputer 103 through the data line 3, because the laser light source 102 is always in measurement work, the single chip microcomputer 103 receives the instantaneous distance signal of the current laser light source 102 at the moment, then the data is filtered by the single chip microcomputer 103, the instantaneous distance signal is sent to the bluetooth transmission module 2 through the data line 3, then the instantaneous distance signal is synchronously sent to the bluetooth module 401 of the handheld control end 4 in a wireless manner, the instantaneous distance signal is synchronously transmitted to the measurement software of the handheld control end 4, finally the value of the instantaneous distance signal L2 is read, displayed and captured, and the distance difference L2-L1 of the two algorithms carried by the measurement software is the elevator stopping distance L21 value.

And the second step is to open an electric control cabinet 8 braking switch to enable the elevator car to run to the bottommost layer, at the moment, 200 kg of load 6 is placed in the elevator car 7, and the step of testing the braking distance is consistent with the first step, so that the elevator braking distance L43 is obtained.

And thirdly, opening an electric control cabinet 8 braking switch to enable the elevator car to run to the bottommost layer, placing a load 6 of 400 kilograms in the elevator car 7 at the moment, and obtaining the elevator braking distance L65 by testing the braking distance according to the method in the first step.

And fourthly, opening an electric control cabinet 8 braking switch to enable the elevator car to run to the bottommost layer, placing 600 kg of load 6 inside the elevator car 7 at the moment, and testing the braking distance according to the method of the first step to obtain the braking distance L87 of the elevator.

And fifthly, opening an electric control cabinet 8 braking switch to enable the elevator car to run to the bottommost layer, placing 800 kg of load 6 inside the elevator car 7 at the moment, and testing the braking distance according to the method of the first step to obtain the braking distance L09 of the elevator.

Because the elevator car 7 is loaded with 1250 kg of load 6 to test the damage of elevator car guide rails and parts and threaten the safety of detection personnel, a 0-800 kg load 6 braking distance curve is simulated and drawn through the five-step method, the current braking distance value L of the elevator car 7 by applying the 1250 kg of load 6 is calculated through a simulation curve, and is compared with the standard value of the national standard 125% rated load braking distance to judge whether the current elevator car 7 is in the qualified range of the national standard value, if the current elevator car is unqualified, the braking distance is known through the curve when the linear curve simulates 125% rated load to judge the safety and the reliability of the elevator, and the potential safety hazard is greatly avoided.

The synchronous trigger braking microswitch 5 combines the laser measuring host 1 to ensure that the test result is accurate, the measuring effect is good, the accuracy of judging the qualification of the measured elevator braking distance by measuring the 125 percent rated load of the elevator and the inspection efficiency of a measurer are greatly improved, the measurer can know the whole running condition more conveniently, the braking distance is obtained by simulating the curve when the 125 percent rated load is simulated by loading the load 6 of different kilograms and finally the linear curve, so that the safety and the reliability of the elevator are judged, various potential safety hazards of guide rails, steel wire ropes, tractors, guide shoes and the like when the 125 percent rated load of the elevator is loaded for measurement are greatly avoided, and the accident rate is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims (5)

1. The measuring device for judging the qualification of the stopping distance of the elevator by using 125 percent of rated load is characterized in that: the elevator car-mounted laser measurement system comprises a laser measurement host machine, a Bluetooth transmission module, a handheld control end, a synchronous trigger braking microswitch and a load, wherein the laser measurement host machine is placed at the top of an elevator car and comprises a laser light source and a single chip microcomputer, the laser light source is in circuit connection with the single chip microcomputer, the laser light source is vertically aligned to the top space position of an elevator shaft, the single chip microcomputer is in circuit connection with the Bluetooth transmission module, the Bluetooth transmission module is in wireless signal connection with the Bluetooth module of the handheld control end,

the synchronous triggering and stopping micro switch comprises a trigger, a circuit board and a wireless data transmitting module, wherein the trigger and the wireless data transmitting module are connected with the circuit board, the wireless data transmitting module is in wireless signal connection with a wireless data receiving module of a handheld control end, and the load is placed in an elevator car.

2. The apparatus for measuring the acceptability of an elevator stopping distance with a 125% rated load as set forth in claim 1, wherein: the laser measurement host computer still includes the host computer shell, the host computer shell is placed at elevator car top, laser light source installs on the host computer shell, the singlechip is connected with the host computer battery, installs the host computer switch between the two, singlechip, host computer battery all set up in the host computer shell, the host computer switch is installed on the host computer shell.

3. The apparatus for measuring the acceptability of an elevator stopping distance with a 125% rated load as set forth in claim 1, wherein: the synchronous trigger braking microswitch also comprises a trigger shell, the trigger is arranged on the trigger shell, the circuit board is connected with a trigger battery, a trigger switch is arranged between the circuit board and the trigger battery, the circuit board and the trigger battery are both arranged in the trigger shell, and the trigger switch is arranged on the trigger shell.

4. The apparatus for measuring the acceptability of an elevator stopping distance with a 125% rated load as set forth in claim 1, wherein: the single chip microcomputer is connected with the Bluetooth transmission module through a data line.

5. The apparatus for measuring the acceptability of an elevator stopping distance with a 125% rated load as set forth in claim 1, wherein: the handheld control end is a mobile phone or a tablet computer or a notebook computer with a Bluetooth module and a wireless data receiving module.

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