CN205187529U

CN205187529U - Elevator weighing apparatus

Info

Publication number: CN205187529U
Application number: CN201520860931.9U
Authority: CN
Inventors: 黄维纲; 顾信鹏
Original assignee: Canny Elevator Co Ltd
Current assignee: Canny Elevator Co Ltd
Priority date: 2015-11-02
Filing date: 2015-11-02
Publication date: 2016-04-27
Anticipated expiration: 2025-11-02

Abstract

The utility model provides an elevator weighing apparatus, sets up on the elevator car subassembly, unit and storage unit are appraised including weighing sensor, AD module, the moment compensation of installing in the car bottom to the weighing device circuit, the AD module is installed to the weighing sensor output, AD module output through two parallelly connected shielded cable respectively coupling torque compensation appraise the unit and weigh / the moment arithmetic element, moment compensation appraises the unit output and installs motor control unit, and the motor control unit output inserts and weigh / the moment arithmetic element, weigh / moment arithmetic element output connection storage unit input, and store the unit with data input to moment compensation estimation unit. The utility model has the advantages that: this kind of elevator weighing apparatus is through weighing the accuracy to acquire the elevator in true charge number certificate unloaded, fully loaded and that overload, to guarantee the even running of elevator to the bu tong automatic of each floor and number.

Description

Elevator weighing apparatus

Technical field

The utility model relates to a kind of elevator weighing apparatus, belongs to elevator technology field.

Background technology

Elevator has been widely used in the life of people as vertical transportation instrument, its Start-up and operating performance comfort enjoys people to pay close attention to, from the principle of work of elevator, cab and load thereof is suspended in elevator traction machine one end, the other end suspended on the overbalance weight that counterweight promotes to reduce cab, towing machine rotates, and is suspended on the straight-line motion that the cab at its two ends and counterweight are done in opposite directions in elevator hoistways.Quantity due to passenger is change, and counterweight can not the overbalance weight of full remuneration elevator cage, generally, counterweight be set to the load weight that just in time can compensate semi-load in cab, namely, when there being load semi-load in cab, being equal in weight of towing machine two ends, reaches balance; When cab internal burden is lower than semi-load, it is light that cab side matches well heavy side, and after band-type brake is opened, elevator is in free state will slip car to counterweight Slideslip; When cab internal burden is higher than semi-load, cab side matches well heavy side weight, after band-type brake is opened, elevator is in free state will slip car to cab Slideslip, as can be seen here, if elevator does not compensate this unbalanced weight when starting, or compensate the inaccurate elevator that all can affect and start comfort.

Summary of the invention

Technical problem to be solved in the utility model is: provide a kind of elevator weighing apparatus, accurately can measure the load state of elevator, and the startup compensating moment under automatic computing current load condition, all processes do not need manual intervention, and can the output valve that slowly changes in time of self adaptation weighting apparatus.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of elevator weighing apparatus, be arranged on lift car assembly, described weighting apparatus circuit comprises the LOAD CELLS being arranged on cage bottom, A/D module, torque compensation estimation unit and memory cell, described LOAD CELLS mouth is provided with A/D module, described A/D module mouth is by two shielded cables coupling torque compensate for estimated unit and weighing/moment arithmetic element respectively, described torque compensation estimation unit mouth is provided with motor control unit and motor control unit mouth access weighing/moment arithmetic element, described weighing/moment arithmetic element mouth connects memory cell input end, and memory cell enters data into torque compensation estimation unit.

As preferably, described motor control unit comprises instruction speed module, speed ring module and feeds back fast module.

As preferably, access speed ring module after described instruction speed module and the fast wired in parallel of feedback.

Compared with prior art, usefulness of the present utility model is: weigh/moment computing memory cell is by the output of observation motor control unit speed ring, before when each startup, speed curve of elevator loads, now elevator speed remains on zero-speed state, the maintenance moment values under this load is observed by controlled reset, elevator each run all can calculate in real time and maintain the data of moment values is the latest data automatically upgraded, and can not arrange inaccurate or sensor exporting change and affect elevator and start comfort because of weighing.

Accompanying drawing illustrates:

Below in conjunction with accompanying drawing, the utility model is further illustrated.

Fig. 1 is compensation block diagram of weighing of the present utility model

In figure: 1, LOAD CELLS; 2, A/D module; 3, torque compensation estimation unit; 4, weighing/moment arithmetic element; 5, memory cell; 6, motor control unit; 6-1, speed ring module; 6-2, instruction speed module; 6-3, feed back fast module; 7, moment values is maintained; 8, torque compensation value; 9, torque command.

Detailed description of the invention:

Below in conjunction with the drawings and the specific embodiments, the utility model is described in detail:

A kind of elevator weighing apparatus as shown in Figure 1, be arranged on lift car assembly, described weighting apparatus circuit comprises the LOAD CELLS 1 being arranged on cage bottom, A/D module 2, torque compensation estimation unit 3 and memory cell 5, described LOAD CELLS 1 mouth is provided with A/D module 2, described A/D module 2 mouth is by two shielded cables coupling torque compensate for estimated unit 3 and weighing/moment arithmetic element 4 respectively, described torque compensation estimation unit 3 mouth is provided with motor control unit 6 and motor control unit 6 mouth access weighing/moment arithmetic element 4, described weighing/moment arithmetic element 4 mouth connects memory cell 5 input end, and memory cell 5 enters data into torque compensation estimation unit 3.

In order to make elevator weighing apparatus have well oneself's adjustment and self-teaching, described motor control unit 6 comprises instruction speed module 6-2, speed ring module 6-1 and feeds back fast module 6-3.

In order to make elevator weighing apparatus self regulating and control better, described instruction speed module 6-2 and access speed ring module 6-1 after feeding back fast module 6-3 parallel connection.

Particularly, the analog signals that LOAD CELLS 1 exports is converted to current value digital quantity 7 of weighing through A/D transfer device 2; The torque command 9 of the speed ring 6-1 output of motor control unit 6; Value of weighing digital quantity 7 and maintenance moment values 9 are input to weighing/moment arithmetic element 4 together, weighing/moment arithmetic element 4 calculates this elevator maximum capacity value, minimum weighing value automatically according to preassigned operation rule, and the startup hold torque under corresponding weighing value, and by minimum load data (minimum weighing value, minimum startup hold torque) and maximum load data (maximum capacity value, maximum startup hold torque) stored in memory cell 5.Then torque compensation estimation unit 3 is according to current minimum load data (minimum weighing value of weighing in value digital quantity 7 and memory cell 5, minimum startup hold torque) and maximum load data (maximum capacity value, maximum startup hold torque) calculate current torque compensation value 8 by formula 1.

Formula 1: the minimum weighing value of elevator and elevator maximum capacity value, it is calculated by current value digital quantity 7 and the weighing/Calculating Torque during Rotary unit 4 of weighing;

Corresponding torque compensation value when elevator minimum weighing value and elevator maximum capacity value, its torque command 9 exported by the speed ring 6-1 of motor control unit 6 and weighing/Calculating Torque during Rotary unit 4 calculate.

It is emphasized that: be only preferred embodiment of the present utility model above, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.

Claims

1. an elevator weighing apparatus, be arranged on lift car assembly, it is characterized in that: described weighting apparatus circuit comprises the LOAD CELLS (1) being arranged on cage bottom, A/D module (2), torque compensation estimation unit (3) and memory cell (5), described LOAD CELLS (1) mouth is provided with A/D module (2), described A/D module (2) mouth passes through two shielded cable coupling torque compensate for estimated unit (3) and weighing/moment arithmetic elements (4) respectively in parallel, described torque compensation estimation unit (3) mouth is provided with motor control unit (6), and motor control unit (6) mouth access weighing/moment arithmetic element (4), described weighing/moment arithmetic element (4) mouth connects memory cell input end (5), and memory cell enters data into torque compensation estimation unit (3).

2. elevator weighing apparatus according to claim 1, is characterized in that: described motor control unit (6) comprises instruction speed module (6-2), speed ring module (6-1) and the fast module of feedback (6-3).

3. elevator weighing apparatus according to claim 2, is characterized in that: described instruction speed module (6-2) and the fast module of feedback (6-3) rear access speed ring module (6-1) in parallel.