JPH01168363A - Control system at crushing plant - Google Patents

Abstract

PURPOSE:To perform an efficient crushing of a raw ore by a crusher under the control of a truck operator alone, by adjusting the conveying rate of a raw one conveying mechanism in accordance with the actual crushing condition of the crusher by the operator staying in a truck. CONSTITUTION:A raw one is fed from an ore conveying mechanism 7 to a crushing portion 1b of a crusher 1 and, at the time, the raw ore is unloaded from a truck 20 to the ore conveying mechanism 7. An operator staying in the hauling truck 20 detects the crushed condition of ore at the crushing portion 1b and controls the conveying rate of the ore conveying mechanism 7 as required without leaving the truck. This method permits an efficient crushing of the ore by the crusher with the aid of the truck operator along as well as continuous truck operation due to his unnecessary alighting from the truck, not only preventing the lowering of efficiency in ore truck loading operation but also making handling by the operator easy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a control system for a crushing plant in which large ore is loaded into a crusher using a loading vehicle such as a shovel loader and is crushed into smaller pieces by the crusher.

[Conventional technology]

A rough stone transport mechanism is installed between the input port of the crusher and the hopper, and large rough stones are loaded into the hopper using a loading vehicle such as a shovel loader, and the large rough stones are transferred to the input port of the crusher by the rough stone transport mechanism. A crushing plant is known in which materials are transported and put into a crushing section of a crusher to be crushed into small pieces.

[Problem that the invention seeks to solve]

In such a crushing plant, there is a limit to the crushing capacity of the crusher, so if the amount of rough stones fed into the crusher is constant, the rough stones cannot be crushed depending on the size and hardness of the rough stones to be crushed. Conventionally, operators visually checked the condition of the crushing section of the crusher and controlled the conveyance speed of the rough conveyance mechanism. ing.

In other words, the amount of raw ore input into the crusher is determined by the conveyance speed of the ore transport mechanism.

For this reason, in order to efficiently crush the raw ores using a crusher, a worker is required in addition to the operator of the loading vehicle, which increases personnel costs and increases the operating cost of the crushing plant.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a control system for a crushing plant that allows rough ores to be efficiently crushed by a crusher only by the operator of a loading vehicle.

[Means and effects for solving the problem] An operator on board the loading vehicle senses the crushing state of the crushing section of the crusher, and thereby the operator can adjust the conveyance speed of the rough ore conveyance mechanism while aboard the loading vehicle. This is a control system for a crushing plant that is controlled by the operator of the loading vehicle, allowing the rough stone to be efficiently crushed by the crusher using only the operator of the loading vehicle.

〔Example〕

As shown in FIGS. 1 and 2, the crusher 1 is installed on a trolley 3 equipped with wheels 2, and a control room 4 is provided in the upper part of the crusher 1. A raw stone conveying mechanism, for example, a conveyor 7 is disposed between the input port 1a and a hopper 6 equipped with wheels 5, and the crusher 1 and the conveyor 7 can be moved by a towing vehicle. Note that the crusher 1 and the conveyor 7 may be of a stationary type.

The conveyor 7 is driven by an electric motor 8, and the rotational speed of the electric motor 8 is controlled by a speed command from a speed controller 10 mounted on a power receiving power vehicle 9. , an automatic speed controller 12 is installed.

An automatic/manual changeover switch 13 and a manual speed controller 14 are installed in the control room 4, and the manual speed controller 14 is equipped with an adjustment knob 14a and a tachometer 14b as shown in FIG. 3 is installed with a television camera 15 for photographing the crushing section 1b of the crusher 1, and first to fourth indicator lights 16. 164 and the antenna 17 are installed in parallel as shown in FIG.

A loading vehicle, for example, a shovel loader 20, as shown in FIG. In addition, a transmitter 26 and a monitor television 27 are disposed in the driver's cab 22, and the transmitter 26 and monitor television 27 are arranged, for example, as shown in FIG.
It is arranged around the driver's seat 28 so that the operator can operate it while sitting and can visually observe it.

As shown in FIG. 6, the video from the television camera 15 is processed by a video processor 29, transmitted from an antenna 17, received by an antenna 25 provided on the vehicle body 21, reproduced on a monitor television 27, and transmitted. The speed signal from the speed controller 26 is transmitted from the antenna 25 and sent to the receiver 11 by the antenna 17. The receiver 11 sends a signal to the automatic speed controller 12, which outputs a speed command to the speed controller 10 to control the electric motor 8. This is to control the speed.

Specifically, as shown in Fig. 7I, when the automatic/manual switch 13 is turned off, the relay R is demagnetized and the first
, the second contacts 30.31 switch to the manual side 30a, 31a, and the manual speed controller 14 and speed controller 1
0 is connected, and by changing the resistance value of the variable resistor 14c with the adjustment knob 14a, a speed signal is sent to the controller 10a of the speed controller 10, and thereby the electric motor 8
The speed of is controlled. In addition, the speed controller 10
is conventionally known and detailed explanation will be omitted.

Also, when the automatic/manual changeover switch 13 is turned on, the relay R is excited, and its first and second contacts 30.31 are switched to the automatic side 30b, 31b, and the automatic speed controller 12 and speed controller 10 are connected. When the operator issues a speed command from the transmitter 26, the electric motor 8 is controlled to a speed corresponding to the speed command, and the first to fourth indicator lights 16. -164 are controlled to turn on.

That is, the receiver 11 includes first, second, third, and fourth speed switches 3211, 322, 323, and
, third and fourth display switches 331.332, 333.3
3a, the automatic speed controller 12 is provided with a first
2nd, 3rd, 4th relay switch 341.342.34
3 +344 and a pair of first, second, third, and fourth contacts 35
1.352.35g, 354 are provided, and the first to fourth contacts 351 to 354 side are the first and second switches 30.
．． 31 to be connected to the speed controller 10.

Therefore, when loading a large ore into the hopper 6 using the shovel loader 20 as shown in FIG. The state of the crusher 1b is visually observed, the crushing state of the crusher 1 is known, and the speed of the electric motor 8 is controlled by operating the transmitter 26 and outputting a speed command based on this, and the speed of the conveyor 7 is controlled. The conveyance speed is adjusted to a speed suitable for the crushing capacity of the crusher 1, and then the rough stone is put into a hopper 6 and conveyed to the crusher 1 by a conveyor 7. For example, when the operator 2 outputs a 2nd speed signal from the transmitter 26, the second speed switch 322 and the first and second display switches 331, 332 are turned ON, the second relay switch 342 is energized, and the second contact 352 is turned ON. A second speed command is outputted to the controller 10a, and the electric motor 8 rotates at a predetermined second speed.At the same time, the first and second display lamps 16. ．． 162 lights up so that the operator can know the speed of the conveyor 7.

Note that the speed of the electric motor 8 may be controlled continuously instead of stepwise.

In addition, as shown in FIGS. 9 and 10, the monitor television 27
The transmitter 26 may be installed near the hopper 6 on the travel path of the shovel loader 20, and the operator may extend his hand from inside the operator's cab 22 to operate the transmitter 26. As shown in the figure, a monitor television 27 may be installed near the hopper 6, and a transmitter 26 may be installed in the driver's cab 22.

Also, as shown in FIG. 13, a mirror 4 is placed above the crusher 1.
0 may be installed opposite the crushing section 1b so that the operator can visually see the crushing section 1b of the crusher 1 from inside the operator's cab 22.

〔Effect of the invention〕

This system allows the operator to control the conveyance speed of the rough stone conveying mechanism according to the state of the crusher 1 while remaining on board the loading vehicle, allowing only the operator of the loading vehicle to efficiently crush the rough stones by the crusher. Since the operator does not need to get off the loading vehicle, the loading vehicle can be operated continuously, and the efficiency of the rough ore loading work by the loading vehicle is not reduced, and the operator's operation is facilitated.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an overall front view, Fig. 2 is a plan view, Fig. 3 is a front view of the automatic/manual changeover switch and manual speed controller, and Fig. 4 is an antenna and indicator light. Fig. 5 is a plan view of the driver's cab, Fig. 6 is a block diagram of the speed control section, Fig. 7 is its circuit diagram, Fig. 8 is a side view of the mounting part.
9 and 10 are front and plan views of the second embodiment. FIGS. 11 and 12 are front and plan views of the third embodiment. It is a front view of 4th Example. 1 is a crusher, 1b is a crushing section, and 20 is a shovel loader.

Claims (1)

[Claims] In a crushing plant in which rough stones are loaded into the crushing section 1b of the crusher 1 by a rough stone conveying mechanism and rough stones are loaded into this rough stone conveying mechanism by a loading vehicle, an operator on board the loading vehicle loads the rough stones into the crushing section 1b of the crusher 1. A control system for a crushing plant, characterized in that an operator senses the crushing state of the raw ore 1b and thereby controls the conveyance speed of the raw ore conveyance mechanism while riding in a loading vehicle.