SU1437343A1 - Indicator of boom crane load suspension outreach - Google Patents

Abstract

The invention relates to the field of lifting and transport equipment, namely, indicators of vypeta cargo suspension jib cranes. The purpose of the invention is to increase accuracy. Sensor 1 of the angle of the boom to the base, sensors 7.8 of the length of the etched ropes of the mechanisms of the main and auxiliary lifts, unit 20 for the distance between the blocks of mechanisms of the main and auxiliary lifts and unit 23 for the distance between the root of the boom and the main mechanism unit the input unit 6 of the display. From the signals of the sensors 1, 7, 8 and setting units 20, 23, the computational scheme determines the load suspension of the crane, which is displayed by the display unit 6. 2 Il.

Description

(L

with

four

SLZ

|

OS 4 OS

FIG.

The invention relates to an overhead transport equipment, namely, to the departure indicators of the cargo suspensions of the jib cranes. .

The purpose of the invention is to improve accuracy.

FIG. 1, a functional diagram of the indicator is presented; in fig. 2 - a general view of the jib crane.JQ

The departure indicator of the cargo suspension of the boom crane contains the sensor 1 of the angle of the boom 2 to the base, connected to the inputs of blocks 3 and 4 of the analog signal multiplication, 15 whose outputs through the adder 5 are connected to the display unit 6. The sensors 1 and 8 of the lengths of the corroded ropes 9 and 10 of the main and auxiliary lifting mechanisms are connected to the same 20

the input of the adder 11 and the differential amplifier 12. Sensor 7 is also connected

to one input of the adder 13 and the differential amplifier 14. The outputs of the adder l and amplifier 12 are connected via an analog signal multiplier 15 to one input of the differential amplifier 16, the output of which is connected to other inputs of the adder 13 and amplifier 14 and one input a difference 30 amplifier 17, the output of which is connected to another input of block 3. The outputs of adder 13 and amplifier 14 through block 18 of analog signal multiplication and block 19 of square root extraction are connected to another input of block 4. Unit 20 is the distance between blocks 21 and 22 mechanism The main and auxiliary hoists and the distance sensor 23 between the root of the boom 2 and the block 21 are connected to other inputs of the amplifiers 16 and 17, respectively. Sensor 1 is made with a cosine 24 and a sinus 25 outputs. Cargo suspension 26 is suspended from ropes 9 and 10.

Pointer departure cargo suspension jib works as follows.

A cargo suspension 26 is ejected by the JO calculation formulas.

35

40

45

50

1 - (h, -hicos 0) - (h, + h, cos with /) xsinM + (L-h, cos 0) - cos 41

/

(j () - () - -j

where h 1, h is the length of the etched ropes of the mechanisms of the main,

Q

50

50

five

0

five

0

five

th and auxiliary climbs; L is the distance from the root

booms to the main lift mechanism block, - C — distance between the blocks;

o is the angle between the etched rope of the main-lift mechanism and the boom — the angle of the boom to

the base.

The source data for the calculation are the signals from sensors 1, 7, 8 and setters 20 and 23. After processing the signals in accordance with the calculation formulas (1), (2) at the output of the adder 5, the signal is proportional to the departure of the load suspension 26. This signal is displayed by block 6 .

Claims (1)

The invention The departure indicator of the cargo suspension of the boom crane containing the boom tilt angle sensor to the base, made with cosine and sine outputs, the distance adjuster between the main and auxiliary lift units, the distance between the boom root and the main lift unit and the adder, output which is connected to the input of the display unit, characterized in that, for the purpose of higher accuracy, it is equipped with analog multiplication units of signals, one of the inputs of the first two of which are connected They are equipped with cosine and sine outputs of the boom angle sensor to the base, and the outputs are connected to the input of the adder, additional adders, differential amplifiers, a square root extraction unit and length sensors of corroded ropes of the main and auxiliary lift mechanisms one inputs of additional adders and one input of two differential amplifiers, and the other to other inputs of the first additional adder and differential amplifier, the outputs of which through the third block of analogs second multiplying signals connected to one input of a third differential amplifier, the other input of which is connected with setpoint distances between the blocks mechanisms main and auxiliary lifts, and the output is connected to other inputs of the second additional adder and differential amplifier, the outputs of which are connected through another fourth analog multiplying unit and a square root extractor unit to another input of the second analog multiplying unit, and the fourth differential amplifier inputs are connected to the third output the difference amplifier and with the setting device, the distance between the boom root and the main lift mechanism block, and the output is connected to another input of the first block; multiply multiply signals. 26 FIG. 2