SU1182123A2 - Arrangement for accounting for transport equipment working hours - Google Patents

Abstract

THE DEVICE OF NUCLEAR ACCOUNTING OF WORK OF THE TRANSPORT EQUIPMENT on aut.St. No. 1059072, characterized in that, in order to control the accuracy of the device, it is equipped with a cable deflection sensor connected to the seventh input of the force correction unit.

Description

(L

WITH

fas.f 11 The invention relates to the automation of mining and transportation equipment, such as dragline excavators. The aim of the invention is to improve the accuracy of operation of the device. FIG. 1 shows a block diagram of the device; in fig. 2 is a functional diagram of a bucket loading measurement unit; Fig. 3 is a functional block diagram of the control unit; in fig. 4 is a functional diagram of the force correction unit; in fig. 5 illustrates an example of channel deviation from a bucket up / down plane; in fig. 6 — Dependence of the ratio of the actual statute of the motor to the motor to the measured component on the angle of the rope with the bucket from the vertical; n1 of the bucket lifting plane f as well as the relative error of measurement of the static current component of the lift motor from the angle of deflection of the rope with the bucket from vertical .; Device Static Component Allocation Unit 1 Link 2 of Block 1 with Engine Lift Chains, Control Unit 3, Platform Rotation Sensor 4, Link 5 of Unit 3 with Engine Rope Chain, Dimension Block 6 for Bucket Loads , the sensor 7 of the excitation current of the motor lift, the force correction unit 8, the lift motor speed sensor 9, the sensor of the length 10 of the rope, the sensor 11 of the length of the lifting rope, the amount of time calculator 12, the platform angle measurement unit 13, the sensor 14 is not a rope deviation, the threshold elements 15, and 15, the elements s And 16i- 16., flip-flops 17 - 17 |. , inverter 18, differential booster elements 19, and 19, WI20 elements 20 (and 20Z, integrating elements 21, and 21, block 22 delay switch 23, analog-to-digital converter 24, distributor 25 pulses, registers 26, and 262 , counter-adder 27, registers 28, -28.J, decoder 29, -29, blocks 30, -305 of variable coefficients, amplifier 3 and dynamic-component controller 32. The device operates as follows ... Proportional to the bucket mass from block I, the allocation of the static component of the 32 current of the lift motor, where the selection of the static component is carried out the full current 1 of the lift motor, a bipolar signal is formed depending on the direction of the bucket movement (lifting or lowering), the signal goes through the first threshold element 15, and integrating element 21, to the input of element 16, to the second input of which a signal goes the thrust motor through the threshold element 15g and the integrating element 212, a signal is delayed to perform the digging operation (the signal of the motor thrust current signal must be greater than the specified one) by the time required to turn on the motor mechanism under EMA. When the signals from the lift engine and the delayed motor match, the trigger trigger 17 is set to one state, preparing the bucket loading measurement unit 6 to the beginning of the .1 mass measurement of the loaded bucket. As a result, the value of the measured mass of the filled bucket from the analog-digital converter 24 is fed to the second input of the counter-adder 27 via the-element AND 16 according to the resolution of the measurement trigger 17. When the platform is rotated after the bucket is unloaded in the control unit 3, the trigger 17) is set to one, and the measurement trigger 17 is set to the zero state. On the resolving potential of the trigger 1 7 | rotation, a pulse distributor 24 is started, element 16 is prepared to transmit a code equal to the mass of the unloaded bucket to the counter-adder 27. From the static component extraction block 1, in addition, through the delay block 22, the signal is delayed by the time equal to the activation the mechanism of rotation after a possible shutdown of the engine rise when performing 1 click on the excavation. So, the signal from the output of the delay unit 14 goes to the first element I 1b (preparing the element 311 16 to turn the trigger 17 on, turning. By a signal from the platform turn sensor 4, depending on the direction of movement of the excavator-shaped boards coming through the inverter 18, the right-turn trigger 17 or the left-turn trigger 17 is set to one, and the signal from the output of the flip-flops 17 and 17, after being differentiated by its differentiating elements 19, and 19 is fed through element 16 to the single trigger input 17, rotation and zero trigger input 172. Permitting potential coming from a single output trigger 17 through the OR element 20, the pulse distributor is started and the resolution is applied to the second input of the AND 16 element, allowing the signal equal to the unloaded bucket mass to be fed to the reversible counter input -summator 27 to determine the weight of the shifted load. Therefore, the trigger 17 is set to one in the case of a change in the direction of movement of the excavator platform and if before that there was a signal about the presence of force in Removable rope (load on the engine lifting mechanism). The bucket load measurement unit 6 provides alternate conversion of the analog signals of the lift motor excitation current, the static component of the lift motor core, corrected only by the dynamic component, and the static component of the lift motor core current, corrected by the drive current, engine efficiency, the length of the lifting and traction katanov, by the dynamic component taking into account the speed of raising or lowering the bucket, as well as additionally corrected by the angle of deviation to Anata with a bucket from the vertical. The alternate connection of parameters to the analog-to-digital converter 2A is carried out by means of a switch 23, the code of which is connected to the inputs of the register 26, the excitation current, the register 26 of the main current and to the inputs of the AND elements 164 The potential from the trigger 17 goes to the second input of the element AND 16 , allowing reception from the analog-digital converter 23 by a counter-summer of information about the magnitude of the main current of the lift motor in the presence of a clock signal from the distributor of 24 pulses. The content of the counter-adder is transmitted to the output unit 12 by a signal from the control unit. The force correction unit 8 provides for the introduction of corrections to the signal, removed from the allocation unit 1 of the static component of the lift motor current, and proportional to the weight of the excavator bucket. The signal from block 1, the passage through blocks 30, -30, and variable coefficients at the input of amplifier 31, varies depending on the magnitude of the excitation current, and on the directly current value of the static component of the lift current, the length of the hoisting and traction cables the operation of the lifting mechanism (raising or lowering the bucket), as well as deviations from the vertical of the rope with the bucket (the plane of raising of the bow). The excitation current is formed by a chain: sensor 7, register 26, decoder 29 /, variable coefficient block 30I, and static component of current 1 selected by block 1, of a bipolar type, is fed to the input of the impedance matrix of variable coefficient block 30. When simultaneously fed from the register 26I to the decoder 29, the value of the excitation current in digital form, the positional code from the decoder 29j connects to the resistance matrix of the block 30 variable coefficients a corresponding resistance circuit, resulting in the output of the block 30 corrected for the excitation current 1J, KB. Correction of the efficiency of the engine lift is implemented by the following chain: register 26g, decoder unit 30 variable coefficients. This function. Qi is realized by the signal value of the static component of the lift motor current in a digital form taken from register 26 and using the decoder 292 polarity dependence of the analog signal KKv, coming from the output of block 30, includes the corresponding resistance circuits, correcting the signal by the lift motor efficiency . For lifting mode signal. It has the form 1dKv Cd, -a for the mode of lowering the cowgate. type I.KB Co. Corrections along the length of the rope are produced by a chain consisting of sensors 10 of the length of the rope, register 28, decoder 29j, block 30t of variable coefficients. The correction for the length of the lifting rope is carried out along the following chain: the sensor 11 for the length of the lifting rope, register 282, decoder 29c, block 30 of variable coefficients. The signal deflection on the deflection of the hoisting rope with the bucket is performed by the following chain: rope deflection sensor 14, register 28, decoder 295-, block 30 of variable coefficients. For the lowering mode, the signal is as follows: 1 Sq. Co Kt. Kp. The signal from the fifth block 305 of the changes H1) TX of the coefficients is fed to one, kz amplifier inputs, which may be, for example, the Hbrfi operation unit -. Type 140UD7, and the input of the resistor 32. Pa second input amplify. A bipolar signal Dc is received from the lift speed sensor 9, which is used to correct the signal by changing the operating mode of the lift drive. Wits analog signal IK and 1k, proportional to the mass of the transported bucket, respectively, for the mode of raising the bucket and for the mode of lowering. Analog signals 1k, or IK from amplifier 31 through switch 23 are fed to analog-to-digital converter 24, from where, after conversion, inverter 16 and 16 are fed to the corresponding input of counter-adder 27 (depending on the operation mode - raising the bucket with a load or lowering the unloaded bucket.). In the counter-adder 27, the weight of the load, M, moved by the bucket is determined. The D code M, based on the change in the signal Pr, coming from the output of the second integrating element 212, is rewritten into output block 12, where also the angle of rotation of the platform where the mass of the computation load is transferred is entered through block 13 measuring the angle of rotation of the platform. Consequently, the implementation of a correction in deviation of the rope with a bucket transported from the vertical in a pre- lagged device allows to provide an increase in the accuracy of determining the mass of the transported material in the bucket.

Fig 5

if / f

in / in - i

/ e I

Claims (1)

DEVICE OF THE DAY OF ACCOUNTING THE WORK OF TRANSPORT EQUIPMENT by ed. № 1059072, characterized in that, in order to increase the accuracy of the device is provided with a tow rope deflection nym the connected ^one to the seventh input force correction block. FIG. 1 N5 er with 1>