FR2511148A1 - METHOD FOR MEASURING LOADED QUANTITIES OR PERFORMANCE OF HYDRAULIC EXCAVATORS OR SIMILAR ENGINES - Google Patents

Abstract

PROCESS FOR MEASURING THE LOADED QUANTITIES OR THE LOADING EFFICIENCY OF HYDRAULIC EXCAVATORS OR SIMILAR LOADING MACHINES, WHICH ARE EQUIPPED WITH A LOADING SHOVEL, ARTICULATED ON A SHOVEL ROD MOUNTED IN THE FORM OF AN ARROW, AND WHICH IS SUSCEPTED TO SWITCH UNDER THE ACTION OF THE PISTON-CYLINDER ASSEMBLIES. PROCESS CHARACTERIZED IN THAT AFTER FILLING THE LOADING SHOVEL, THE PRESSURE IN THE PISTON-CYLINDER ASSEMBLY BETWEEN THE SHOVEL ROD AND THE LOADING SHOVEL IS MEASURED AT LEAST IN ONE POSITION OF THE SHOVEL ROD, AS WELL AS THE ANGLE OF THE SHOVEL SHAFT; FROM THE VALUES THUS MEASURED, THE WEIGHT OF THE CONTENTS OF THE SHOVEL IS DETERMINED IN A CALCULATOR USING THE VALUES INTRODUCED IN ADVANCE WHICH RESTITUTE THE CONSTANTS IMPOSED BY THE CONSTRUCTION AND THE VARIABLE EFFORTS ON THE EMPTY SHOVEL; THE WEIGHT OF THE CONTENTS OF THE SHOVEL IS DISPLAYED. THE INVENTION APPLIES IN PARTICULAR TO THE LOADING OF LARGE TONNAGE TRUCKS.

Description

"A method for measuring charged quantities or the yield of

  The invention relates to a method for measuring the quantities loaded or the loading efficiency.

  hydraulic excavators or loading equipment

  loggers, who are equipped with a loading shovel, articulated

  mounted on an excavator shaft mounted as an arrow and which is capable of tilting under the action of piston-cylinder assemblies. A direct measurement of the loading efficiency, in particular of large machines of the aforementioned type, is of interest to the operator and the manufacturer of the machine and has been repeatedly desired. Thus, it may be important.

  for example, to know the quantities loaded on a

  using a hydraulic excavator, particularly for

  stop loading according to the weight It can also

  be interesting to know the performance of the ex-

  caveman or also team service staff

or by time intervals.

  Known installations are able to detect the load torque of a hydraulic excavator, especially in order to avoid overloads The load torque depends on the contents of the excavator and the unloading of

  the shovel, and it is usually detected through

  pressure in the cylinder of the main boom and through the angular position using

  potentiometers If a value is exceeded

  mite, a signal is sent or the system is triggered.

  Such known installations can not be used for the measurement of the charged quantities or the yield, nor are they designed in

this goal.

  The object of the present invention is to create a method for measuring the quantities taken during

  loading or loading the loader

  obtained in relation to a time interval de-

  completed. For this purpose, it is proposed, in accordance with the invention, a method characterized in that

  (a) after filling the load shovel,

  at least in one position of the pellet rod the pressure in the piston-cylinder assembly between the shovel shaft and the loading shovel, as well as the angle of the shovel rod, b) from the values thus measured , we determine in

  a calculator the weight of the contents of the shovel in use

  reading values introduced in advance which

  kill the constants imposed by the construction and the variable forces on the empty excavator,

  c) the weight of the contents of the shovel is displayed.

  Thanks to the proposals of the invention, it is possible to collect information on the weight of the bulk product and finally on the permanent torque of the excavator, the measurement carried out on the shovel or in the vicinity of the shovel, making it possible to limit the causes of errors to

a very low level.

  For loading a transport vehicle S

  it may be interesting to know the amount of char-

  This can be achieved according to another characteristic of the invention in that the weights thus determined of the contents of the excavator for several work steps are totaled and displayed.

on demand.

  Counting the number of loading shovels needed, it is easy to add the weights

  of these excavators, determine the weight of the load of the vehicle

  the transport, the counting of shovels can for example be triggered by a characteristic work movement 3.-

  for example the opening of the valve of the load shovel-

  According to a particular characteristic of

  invention, it is proposed that, in order to apprehend the

  load, the weights so determined from the

  naked shovel for several stages of work, are all-

  tagged and displayed in relation to a time interval

given in advance.

  Thanks to a built-in timer or an instrument

  analogously # this way we can directly read the

  the excavator, so that, for example,

  charging for a single vehicle or also over a longer period of time, for example

  a work team, can be determined without difficulty.

  For this purpose, it is only necessary to give the beginning and

the end of the time interval.

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Claims (3)

  1. Method for measuring charged quantities   or the loading efficiency of hydraulic excavators   or similar loading machines, which are equipped with a loading shovel, articulated on a shovel   mounted in the form of an arrow, and which is capable of   culer under the action of piston-cylinder assemblies, characterized in that:   (a) after filling the load shovel,   at least in one position of the shovel shaft, the pressure in the piston-cylinder assembly between the shovel shaft and the loading shovel, as well as the angle of the shovel shaft, b) from the values thus measured, it is determined in   a calculator the weight of the contents of the shovel in use   reading values introduced in advance which   kill the constants imposed by the construction and   the variable efforts on the empty shovel.   c) the weight of the contents of the shovel is displayed.   Process according to claim 1, characterized   rised in that the weights thus determined contents of the shovel for several stages of work, are totalized and displayed on request.   3. Process according to claim 1, characterized   in that, in order to apprehend the loading efficiency, the weights thus determined of the contents of the shovel for several work steps are summed and displayed in   relationship with a given time interval in advance.