SU1411387A1 - Method of determining operation factors of dragline excavator - Google Patents

Description

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The invention relates to the automatic control and recording of the work of dragline excavators used in open pit mining.

: The purpose of the invention is to improve the accuracy of determining the technological: excavation cycles,

FIG. 1 schematically Proven arrangement of the body, excavator boom and lines, explaining the essence of the proposed method; FIG. 2 is a functional diagram of the device reaping the method for determining the performance of a dragline excavator.

The coordinate dependence of the location of the line of the beginning of the unloading and unloading (Fig, 1) per line - 1 mass proportional factors K ... K, between the difference in static efforts in the ropes, lifting of the rope and the mass of the bucket is used. When the bucket moves to unload along any path, for example, L or L, the bucket always crosses at the beginning only the lines of the mass coefficients K, then the successive lines of the beginning of the unloading and the unloading line. The location of the bucket on the unloading line is fixed at the time of the condition

t Fndt 7 C. 10 o.

On this basis, at each time interval (Fig. 1) it is necessary to determine and consistently fix Ba ib as many values 1.4 (Y - S) as needed to return to the result with; -; the given mass coefficient Kg Ij, relative to the discharge line (on fkg.1 there are four of them).

The absolute angle of rotation of the s-xquator boom is measured in terms of mining, and it is used to set absolute loading angles from (j unloading d KOBiiia. At the same time, the loading and unloading angles of the bucket can be set using minimum, jVuH and maximum o („„ ;, with J «« KC angles, the absolute angle of rotation is determined by the magnetic lines of force

The functional diagram of the device for carrying out the method (Fig. 2) contains integrators 1 h 2, comparison circuits 3 and 4, unit 5 of the load definition and loading angles, elements 6-8 of the cycle operation memory, subtraction circuits 3872

neither 9 nor multiplication 10, stack memory block 11 and metering block 12.

Circuit 13 and 14 in the blocks T and 2 receive signals proportional to,. static forces in lifting (F) and in tow (F) ropes.

The device works as follows.

0 At the beginning of the excavator operation, set the loading and unloading angles of the bucket by fixing the absolute angles of rotation of the excavator boom, respectively, in the bottom and dump zones, and during 5 working hours, compare the absolute absolute angle of rotation of the excavator boom to the specified loading and unloading angles and generate signals under the conditions,. The static forces in the lifting cables and the thrusts are integrated during the selected time t with large-scale coefficients (1, s) in integrators 1 and 2 and are compared with scheme 3. 5 At its first output, a signal appears. subject to rF -dt- If, if. j second exit - sig

 f. . . and

Transfer of bucket subject to 0. f p g) the third exit

  and °

Signal Discharge -

4 ff, dt -7 C. | F., d

subject to Item 6 memory

; fixes the operation of Siphon at 5 coincidence of signals; Siphoning of the iTenapraction with / and prepares for operation the memory element 7, which is triggered when a signal arrives. Transferring the bucket to its first input. The memory element 0 7 prepares to work with its output, memory element 8 and returns memory element 6 to the initial state. The memory element 8 fixes the operation Unload when the signals of the Unload- (. Ka and equality o (/.

 The signal from the output of the memory element 8 returns to the initial state the memory element 7, adds one pulse. into the counter of the number of cycles in the accounting unit 12 and allows the output of the mass of the bucket from the stack memory unit to the accounting unit. The return of the memory element B to the initial state occurs automatically.

 Thus, in the metering unit 12, information is accumulated on the total mass of the processed rock mass and on the number of excavations produced in accordance with the for; technology.

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Claims (1)

Invention Formula The method for determining the performance of a dragline excavator, including measuring static forces in hoisting and traction ropes and determining the parameter characterizing the bucket mass by their difference, characterized in that, in order to improve the accuracy of determining technological excavation cycles, additional loading angles are set and unload the bucket, measure 7 the current value of the angles of rotation of the boom of the excavator dragline in terms of mining, at the same time integrate the static forces in the hoisting and traction ropes; compare the calculated values with. Taking into account the value of the mass coefficients, the technological cycles of the excavation are determined from the results of a comparison of the loading and unloading angles and the boom angles of the dragline excavator in terms of mining operations. Phage, 1