Load weight measuring system mounted on a construction machine
First Claim
1. A load weight measuring system mounted on a construction machine of the type which includes a boom operative by fluid pressure in a boom actuating cylinder which controls said boom having a load-transferring member connected thereto, comprising:
- a boom position sensor for sensing a position of said boom;
a boom actuating cylinder fluid sensor for sensing boom cylinder pressure in said boom actuating cylinder;
a first weight indicating unit for indicating the weight of a load actually laded on a loadable vehicle by said construction machine each time as a cumulative measured load weight;
a second weight indicating unit for indicating a substracted weight as the weight obtained by substracting the current cumulative measured load weight from a preset weight of the load to be laded thereon to define the weight of the load which can be laded further on said loadable vehicle by said construction machine; and
controlling means for controlling the weight indication in the first and second weight indicating units using at least the fluid pressure in the boom actuating cylinder and the boom position as detecting elements, whereby the weight of the load actually loaded by the load-transferring member of said construction vehicle is measured and compared by computation with a preset weight of the load to be laded thereon thereby to indicate the weight of the remaining load which can be further laded thereon so that overloading thereof can be prevented.
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Accused Products
Abstract
A load weight measuring system 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 (Wo) 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.
36 Citations
2 Claims
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1. A load weight measuring system mounted on a construction machine of the type which includes a boom operative by fluid pressure in a boom actuating cylinder which controls said boom having a load-transferring member connected thereto, comprising:
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a boom position sensor for sensing a position of said boom; a boom actuating cylinder fluid sensor for sensing boom cylinder pressure in said boom actuating cylinder; a first weight indicating unit for indicating the weight of a load actually laded on a loadable vehicle by said construction machine each time as a cumulative measured load weight; a second weight indicating unit for indicating a substracted weight as the weight obtained by substracting the current cumulative measured load weight from a preset weight of the load to be laded thereon to define the weight of the load which can be laded further on said loadable vehicle by said construction machine; and controlling means for controlling the weight indication in the first and second weight indicating units using at least the fluid pressure in the boom actuating cylinder and the boom position as detecting elements, whereby the weight of the load actually loaded by the load-transferring member of said construction vehicle is measured and compared by computation with a preset weight of the load to be laded thereon thereby to indicate the weight of the remaining load which can be further laded thereon so that overloading thereof can be prevented. - View Dependent Claims (2)
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Specification