Construction machine including a display device displaying the weight of a work object

Patent metadata

Field	Value
Publication number	US-11169018-B2
Application number	US-201816492240-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Aug 24, 2017
Publication date	Nov 9, 2021
Grant date	Nov 9, 2021

Abstract

A controller (18) calculates, based on a target loading weight (P) that is a target value of a total weight of working objects to be loaded into a hauling vehicle, a set loading time number indicative of a loading time number required for the construction machine before the target loading weight (P) is reached and bucket shape information indicative of a shape of a bucket (7), an appropriate loading weight (Wa) that is an appropriate value of the weight of the working objects to be loaded into the hauling vehicle by a single time loading work by the construction machine, creates an appropriate amount illustration (30) that is an illustration of a state at which the working objects of the appropriate loading weight (Wa) are loaded into the bucket and that illustrates the state of the working objects, based on the appropriate loading weight (Wa) and the bucket shape information, and controls a display device (19) to display an illustration (29) of the bucket (7) and the appropriate amount illustration (30) in a superimposed relationship.

First claim

The invention claimed is:

1. A construction machine comprising: a work implement including a bucket; a controller configured to calculate a weight of working objects in the bucket; and a display device configured to display the weight of the working objects calculated by the controller, wherein
the controller:
calculates, based on a target loading weight that is a target value of a total weight of working objects to be loaded into a hauling vehicle, a set loading time number indicative of a loading time number required for the construction machine before the target loading weight is reached and bucket shape information indicative of a shape of the bucket, an appropriate loading weight that is an appropriate value of the weight of the working objects to be loaded into the hauling vehicle by a single time loading work by the construction machine in order to load the working objects of the target loading weight into the hauling vehicle by a number of loading works equal to the set loading time number,
creates an appropriate amount illustration that is an illustration of a state at which the working objects of the appropriate loading weight are loaded into the bucket having a predetermined posture and that illustrates the state of the working objects in the bucket, based on the appropriate loading weight and the bucket shape information, and
controls the display device to display an illustration of the bucket having the predetermined posture and the appropriate amount illustration in a superimposed relationship.

2. The construction machine according to claim 1 , wherein
the controller:
calculates, based on the posture of the work implement and a pressure of hydraulic fluid that acts upon a hydraulic cylinder for driving the work implement, an actual loading weight that is a weight of the working objects in the bucket during action of the work implement,
calculates the appropriate loading weight based on a value obtained by subtracting an integrated value of the actual loading weight that is a weight of the working objects loaded already on the hauling vehicle from the target loading weight, a value obtained by subtracting a number of times of a loading work carried out already from the set loading time number and the bucket shape information,
creates the appropriate amount illustration based on the appropriate loading weight and the bucket shape information, and
controls the display device to display, every time a one-time loading work into the hauling vehicle by the construction machine is completed, an illustration of the bucket having the predetermined posture and the appropriate amount illustration.

3. The construction machine according to claim 1 , wherein
the controller further includes a storage device in which a plurality of the appropriate amount illustrations corresponding to the appropriate loading weight are stored for each shape of the bucket in advance, and
the controller:
selects an appropriate amount illustration confirming to the appropriate loading weight and the bucket shape information from among the plurality of appropriate amount illustrations stored in the storage device, and
controls the display device to display the illustration of the bucket having the predetermined posture and the selected appropriate amount illustration in a superimposed relationship.

4. The construction machine according to claim 1 , wherein
the controller:
calculates an appropriate upper limit weight that is an allowable upper limit value of a weight of the working objects to be loaded into the hauling vehicle by a one-time loading work on a basis of the appropriate loading weight and a predetermined upper limit coefficient, and calculates an appropriate lower limit weight that is an allowable lower limit value of a weight of the working objects to be loaded into the hauling vehicle by a one-time loading work on a basis of the appropriate loading weight and a predetermined lower limit coefficient,
creates, based on the appropriate upper limit weight and the bucket shape information, an appropriate amount upper limit illustration that is an illustration of a state at which the working objects of the appropriate upper limit weight are loaded into the bucket having the predetermined posture and that illustrates the state of the working objects in the bucket, and creates, based on the appropriate lower limit weight and the bucket shape information, an appropriate amount lower limit illustration that is an illustration of a state at which the working objects of the appropriate lower limit weight are loaded into the bucket having the predetermined posture and that illustrates the state of the working objects in the bucket, and

controls the display device to display an illustration of the bucket having the predetermined posture, the appropriate amount illustration, the appropriate amount upper limit illustration and the appropriate amount lower limit illustration in a superimposed relationship.

5. The construction machine according to claim 4 , further comprising:
an inputting device configured to input the upper limit coefficient and the lower limit coefficient.

6. The construction machine according to claim 1 , wherein
the controller:
calculates, based on a posture of the work implement and a pressure of hydraulic fluid that acts upon a hydraulic cylinder for driving the work implement, an actual loading weight that is a weight of the working objects in the bucket during action of the work implement,
creates, based on the actual loading weight and the bucket shape information, an actual loading amount illustration that is an illustration of a state at which the working objects of the actual loading weight are loaded into the bucket having the predetermined posture and that illustrates the state of the working objects in the bucket, and

controls the display device to display the illustration of the bucket having the predetermined posture, the appropriate amount illustration and the actual loading amount illustration in a superimposed relationship.

7. The construction machine according to claim 1 , further comprising:
an inputting apparatus for inputting a sticking weight that is a weight of the working objects sticking to the bucket, wherein
the controller:
creates, based on a total value of the appropriate loading weight and the sticking weight and the bucket shape information, a corrected appropriate amount illustration that is an illustration of a state at which the working objects of the total value are loaded into the bucket having the predetermined posture and that illustrates the state of the working objects in the bucket, and
controls the display device to display the illustration of the bucket having the predetermined posture and the corrected appropriate amount illustration in a superimposed relationship.

8. The construction machine according to claim 1 , further comprising:
an inputting device for inputting a falling weight indicative of a weight of the working objects having fallen from the bucket upon loading into the hauling vehicle, wherein
the controller:
creates, based on a total value of the appropriate loading weight and the falling weight and the bucket shape information, a corrected appropriate amount illustration that is an illustration of a state at which the working objects of the total value are loaded into the bucket having the predetermined posture and that illustrates the state of the working objects in the bucket, and
controls the display device to display the illustration of the bucket having the predetermined posture and the corrected appropriate amount illustration in a superimposed relationship.

9. The construction machine according to claim 1 , wherein
the predetermined postu

Assignees

• Hitachi Construction Mach Co

Inventors

• Hoshino Kazunori
• Tomita Kunitsugu
• Nakamura Satoshi
• YAMANOBE Yousuke
• TORIYAMA Youhei

Classifications

• G01G19/16 Primary

  having fluid weight-sensitive devices · CPC title

• E02F9/26 Primary

  Indicating devices {(E02F5/145 takes precedence)} · CPC title

• E02F9/2221 Primary

  Control of flow rate; Load sensing arrangements (E02F9/2203 take precedence over E02F9/2221) · CPC title

• G01G23/365

  involving comparison with a reference value (G01G23/37 takes precedence) · CPC title

• E02F9/2029

  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 title