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EP0334959A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Apparatus for measuring the weight of live load mounted on a construction machine

Assignee: Komatsu Ltd
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Filing: 1987-12-04
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Granted: —
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Expires: 2007-12-04
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Abstract

Abstract The apparatus for measuring-weight of live load mounted on a construction machine which, in order to prevent overload, subtracts the weight (Wn) of load that is really loaded relative to the predetermined weight (W o ) of load, to display a residual weight (W'n) that can be loaded for each loading operation. The measuring apparatus comprises a second weight display unit (24) which displays an actually loaded weight as the measured weight for each loading operation, a first weight display unit (23) which displays the residual weight (W'n) that can be loaded, and a control unit (7) which controls the display of weight in the first and second weight display units relying upon at least a boom cylinder hydraulic pressure (P) and a boom position (H) as detecting elements.

Inventors

  • 👤 Masao Fukuda

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 18:41
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/08; G01G19/10; E; E02; E02F; E02F9/00; E02F9/26; E02F9/264

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 118 words
A load weight measuring system mounted on a construction machine comprising: a second weight indicating unit for indicating the weight of the load actually laded on a dump truck etc. each time as a measured weight; a first weight indicating unit for indicating a subtracted weight or the weight obtained by subtracting the current cumulative measured load weight from a preset weight of the load to be laded thereon (that is to say; the weight of the load which can be laded further thereon); and controlling means for controlling the weight indication in the first and second weight indicating units using at least the fluid pressure in a boom actuating cylinder nad the boom position as detecting elements.
Claim 2
Dependent Claim 118 words
A load weight measuring system mounted on a construction machine comprising: a second weight indicating unit for indicating the weight of the load actually laded on a dump truck etc. each time as a measured weight; a first weight indicating unit for indicating a subtracted weight or the weight obtained by subtracting the current cumulative measured load weight from a preset weight of the load to be laded thereon (that is to say; the weight of the load which can be laded further thereon); and controlling means for controlling the weight indication in the first and second weight indicating units using at least the fluid pressure in a boom actuating cylinder nad the boom position as detecting elements.
Claim 3
Dependent Claim 152 words
A load weight measuring system mounted on a construction machine as claimed in claim 1, characterized in that said controlling means is a microcomputer which includes a central controlling circuit or central processing unit (CPU); a boom actuating cylinder fluid pressure detecting circuit connected with the CPU; a boom position detecting circuit connected with said CPU; a cancelling switch ON/OFF actuation detecting circuit connected with said CPU; an ON/OFF . actuation detecting circuit for a button for setting a numeric value for subtraction, which is connected with said CPU; a program memory connected with said CPU; a delay circuit connected with said CPU; a weight storage circuit connected through the delay circuit with said CPU; an indicator drive circuit connected between said weight indicating unit and said CPU; a printer drive circuit connected between a printing unit and said CPU; and a buzzer drive circuit connected between the buzzer and said CPU.

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