SU1312063A1 - Arrangement for protecting self-propelled boom crane from tipover - Google Patents

Description

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The invention relates to an overhead transport equipment, namely, devices for protection against overturning of a jib self-propelled crane. The purpose of the invention is to increase the reliability of the crane.

Figure 1 shows the functional diagram of the device for overturning of a jib self-propelled crane; figure 2 - load sensors on the crane ,, plan.

A tipping protection device for a boom self-propelled crane contains sensors 1-4 loads of at least four outrigger supports 5-8 of a crane connected in pairs to the inputs of adders 9-13, the outputs of which are connected to threshold elements 14-18, the outputs of which are connected to circuit 19 control of crane drives The front axle load sensor of the crane is connected to the input of the adder 20, the other inputs of which are connected to sensors 1 and 2 of the load of the front extension

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crane supports. The output of the adder 20 through the threshold element 21 is connected to the crane drive control circuit 19.

The device works as follows.

During the operation of the crane, threshold elements 14-18 and 21 control the levels of the signals of the adders 9-13 and 20, with the exceeding of which a given threshold, the corresponding threshold element is triggered and the signal is fed to the control circuit 19 by the crane actuators. Introduction to the device of the adder 20, the signal at the output of which is proportional to the sum of the loads in the front outrigger 5 and 6 and the front axle of the crane (not shown), more accurately takes into account factors affecting the tipping of the crane, which increases the reliability of the device.

Thus, the anti-tipping device of a jib self-propelled crane has a relatively high reliability.

tcx "

nineteen

fug.

Editor N.Rogulich

Compiled by A. Gedeonov

Tehred A. Kravchuk Proofreader S. Cherni

Order 1931/22 Circulation 721 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG 2

Claims (1)

DEVICE FOR PROTECTION AGAINST TIPPING BOOM SELF-PROPELLED CRANE containing load sensors of at least four remote supports of the crane, connected in pairs to the inputs of the adders, and threshold elements, the inputs of which are connected to the outputs of the adders, and the outputs are connected to the control circuit of the crane drives, characterized in that, in order to increase reliability, it additionally equipped with a load sensor of the front axle of the crane, an adder whose input is connected to the output of the load sensor of the front axle of the crane and the outputs of the load sensors of the front outriggers of the crane, and a threshold element, the input of which horn is connected to you. g to the adder, and the output to the crane actuator control circuit. 1,131