Loading system and transporter

• US 9,221,659 B2
• Filed: 09/14/2012
• Issued: 12/29/2015
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Fukasu, Hisataka, Taninaga, Tadashi, Itoi, Takashi, Ueda, Takahiro
• Primary Examiner(s): Macchiarolo, Peter
• Assistant Examiner(s): HULS, NATALIE F
• Application Number:
  US13/821,037
• Publication Number:
  US 20140231153A1
• Time in Patent Office: 1,201 Days
• Field of Search: 177/1, 177/25.12, 177/25.13, 177/25.19, 177136-141, 177145-149, 702173-175
• US Class Current: 1/1
• CPC Class Codes: B60P 1/00 Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading vehicles for carrying harvested crops with means for self-loading or self-unloading A01D90/00; peculiar to refuse collecting-vehicles B65F; loading or unloading vehicles by means not incorporated therein B65G
• CPC Class Codes: B66F 17/00 Safety devices, e.g. for limiting or indicating lifting force
• CPC Class Codes: E02F 9/2029 Controlling the position of implements in function of its load, e.g. modifying the attitude of implements in accordance to vehicle speed control for hydraulic or pneumatic drives E02F9/2203, E02F9/2221 and E02F9/2253 take precedence
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: G01G 19/08 for incorporation in vehicles

Abstract

A loading system that includes a transporter and a loader or a transporter is provided. It includes a load-amount measuring unit installed on the transporter that measures a load amount of an object loaded on the transporter; a difference computing unit computing a difference between the load amount measured by the load-amount measuring unit when the object is loaded, and a load amount measured by the load-amount measuring unit after a measurement when the object is loaded and at a time of traveling; a storage unit storing a difference value data indicating the difference computed by the difference computing unit; a correcting unit correcting the load amount measured by the load-amount measuring unit when the object is loaded, based on a correction rule calculated based on the difference value data stored in the storage unit; and a display unit displaying a corrected load amount obtained by correcting the load amount.

Claims

1. A loading system that includes a transporter and a loader, the loading system comprising:

a load-amount measuring unit installed on the transporter that measures a load amount of an object loaded on the transporter;

a pressure sensor that detects a load applied to a suspension cylinder of the transporter, an amount of the load fluctuating depending on a static friction resistance of the suspension cylinder, wherein the load-amount measuring unit measures the load amount of the object loaded on the transporter, based on the amount of the load detected by the pressure sensor;

a detecting unit that detects a start of travel of the transporter;

a difference computing unit that computes a difference between the load amount, which is measured by the load-amount measuring unit when the object is loaded, and a load amount that is measured by the load-amount measuring unit after a measurement when the object is loaded and after a detection of the start of travel of the transporter by the detecting unit;

a storage unit that stores a difference value data indicating the difference computed by the difference computing unit;

a correcting unit that corrects the load amount, which is measured by the load-amount measuring unit when the object is loaded, based on a correction rule calculated based on the difference value data stored in the storage unit; and

a display unit that displays a corrected load amount obtained by correcting the load amount by the correcting unit.

2. The loading system according to claim 1,

wherein a difference value is processed based on a plurality of the difference value data stored in the storage unit to determine the correction rule, and

the load amount, which is measured by the load-amount measuring unit when the object is loaded, is corrected based on the correction rule.

3. The loading system according to claim 1, further comprising:

a transporter-side communication section that is installed on the transporter; and

a loader-side communication section that is installed on the loader and communicates with the transporter-side communication section,

wherein the display unit is installed in a driver'"'"'s cab of the loader.

4. The loading system according to claim 3,

wherein the correcting unit is installed on the loader,

the transporter-side communication section sends information on the load amount, which is measured by the load-amount measuring unit when the object is loaded, to the loader-side communication section, and

the loader-side communication section outputs the information on the load amount to the correcting unit.

5. The loading system according to claim 4,

wherein the difference computing unit and the storage unit are installed on the loader, and

the transporter-side communication section sends the information on the load amount, which is measured by the load-amount measuring unit when the object is loaded, and the load amount, which is measured by the load-amount measuring unit after the measurement when the object is loaded and at the time of traveling, to the loader-side communication section.

6. The loading system according to claim 1,

wherein the difference computing unit, the storage unit, and the correcting unit are installed on the transporter, and

the display unit is installed on any one of the outside of the transporter and a driver'"'"'s cab of the loader.

7. The loading system according to claim 1, further comprising:

a position detecting unit on at least one of the transporter and the loader,

wherein the difference computing unit assorts the difference values for areas of position information where the load amount is measured when the object is loaded,

the storage unit stores the assorted difference values,

the correcting unit determines the correction rules for areas of position information where the load amount is measured when the object is loaded, and

the correcting unit reads out the difference value corresponding to a loading place, which is detected by the position detecting unit when the object is loaded, from the storage unit to correct the load amount, which is measured by the load-amount measuring unit when the object is loaded.

8. The loading system according to claim 7,

wherein the position detecting unit is installed on the transporter, and

the load-amount measuring unit measures the load amount at the time of traveling if the position information detected by the position detecting unit indicates a predetermined position.

9. The loading system according to claim 1,

wherein the load-amount measuring unit determines a measurement timing according to a state of the transporter to measure the load amount at the time of traveling.

10. The loading system according to claim 1,

wherein the display unit displays an evaluation result corresponding to evaluation that is performed by a load-amount determining unit that evaluates the load amount corrected by the correcting unit.

11. A transporter on which an object is loaded, the transporter comprising:

a load-amount measuring unit that measures a load amount of the loaded object;

a pressure sensor that detects a load applied to a suspension cylinder of the transporter, an amount of the load fluctuating depending on a static friction resistance of the suspension cylinder, wherein the load-amount measuring unit measures the load amount of the object loaded on the transporter, based on the amount of the load detected by the pressure sensor;

a detecting unit that detects a start of travel of the transporter;

a difference computing unit that computes a difference between the load amount, which is measured by the load-amount measuring unit, and a load amount that is measured by the load-amount measuring unit after a measurement when the object is loaded and after a detection of the start of travel of the transporter by the detecting unit;

a storage unit that stores a difference value data indicating the difference computed by the difference computing unit;

a correcting unit that corrects the load amount, which is measured by the load-amount measuring unit when the object is loaded, based on a correction rule calculated based on the difference value data stored in the storage unit; and

a pressure sensor that detects a load applied to a suspension cylinder of the transporter, wherein the load-amount measuring unit measures the load amount of the object loaded on the transporter, based on a detection result of the pressure sensor.

12. The transporter according to claim 11, further comprising an output unit that outputs a corrected load amount obtained by correcting the load amount by the correcting unit.

13. The transporter according to claim 12, wherein the output unit is a display unit that displays the corrected load amount.

14. The transporter according to claim 12, wherein the output unit is a communication section that outputs the corrected load amount.

15. The transporter according to claim 14, wherein the communication section outputs the corrected load amount to a loader that loads the object.