JP2003058742A - Price assessment method for second-handed construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a price assessment method for second-handed construction machine, in which manual work is decreased, the history information on a construction machine can be easily and exactly acquired and assessment work can be efficiently and exactly performed. SOLUTION: A remote hydraulic shovel is managed by a managing server 12 through a telecommunication line, and the managing server has databases 16, 17 and 55 for recording the operation information and maintenance information or the like of the hydraulic shovel. The price assessment method is composed of a step S11 for inputting data related to the visual inspection of the construction machine to a portable terminal 34, a step S12 for transmitting an assessment price calculating command or the like from the portable terminal to the managing server, a step S17 for calculating the assessment price by using the data related to the visual inspection, and the read operation information and maintenance information or the like in the managing server on the basis of the assessment price calculating command, a step S18 for transmitting assessment price data to the potable terminal, and a step S19 for displaying the assessment price on the display screen of the potable terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assessing the price of a used construction machine, and more particularly, to promptly determine the price of a used construction machine.
Comprehensive and accurate assessment method.

[0002]

2. Description of the Related Art In the field of construction machinery such as hydraulic excavators,
Traditionally, used machines have been collected and sold. When collecting and selling a used machine, it is required that the price of the used machine be properly assessed. The price of a used machine depends on its usage, and is not simply determined by the model and year. In reality, the price of a used machine is comprehensively judged from the appearance, specifications, operating status, inspection information, operating environment, and the like.

According to the conventional method for assessing used hydraulic excavators, an assessor or a service person has a "hydraulic excavator assessment document".
Going to the work site where the used hydraulic excavator is placed with the statement, confirming the appearance of scratches, oil leakage and wear amount of each part, engine operating time, etc. The total deduction points are calculated based on the items in the record, and the amount equivalent to the total deduction points is reduced from the standard price to calculate the assessment amount.

Specific items to be entered in the above-mentioned record include, for example, the engine condition in the first item, the turning device condition in the second item, the boom condition in the third item, and the arm condition in the fourth item. The fifth item relates to the state of the bucket. In the item of engine condition, appearance damage,
The number of points to be deducted is determined based on the engine operating time. The external damage is "oil leak, water leak, crack in head, etc."
Is shown, and the running time of the engine is shown by an hour meter, and the deduction points are assigned and shown here. The assessor circles the relevant contents and adds the deduction points written there to determine the deduction points for the engine. Visual damage is based on visual inspection by the inspector.
With respect to each item of the swing device, boom, arm, and bucket, the state of each item is visually inspected for appearance and components, and the deduction points are similarly determined for each item. As described above, the points deducted for each part of the equipment making up the hydraulic excavator are mainly focused on visual inspection by the inspector, and for some (others, such as the swing motor and travel motor), the operating time is also taken into consideration. Calculate and finally calculate the total deduction.

Further, in the above-mentioned record, the type of hydraulic excavator to be assessed, the machine number, the manufacturing date, the elapsed time, etc. are entered, the reference price is obtained according to the model, the correction coefficient is obtained according to the elapsed time, and this correction coefficient is calculated. The deduction amount is calculated by multiplying the deduction total, and the deduction amount is subtracted from the reference price to obtain the final assessment amount. The final assessed amount is entered in the calculated amount column of the assessment document.

The assessment document created as described above is sent from the branch to which the assessor belongs to the head office via the branch office,
After that, processing such as consent is performed.

Further, as a prior art related to the method of assessing a used hydraulic excavator, there is JP-A-10-60948 (“hydraulic excavator”). In the hydraulic excavator disclosed in this publication, a predetermined content related to the work of the hydraulic excavator is stored in the storage unit (hard disk 44) for the purpose of accurately evaluating the work history of the hydraulic excavator in the price assessment of the used hydraulic excavator. ), The work history can be accurately grasped by reading the stored contents from the storage unit. That is, according to this hydraulic excavator, as described in paragraph 0102 of the official gazette, since it is configured such that the work history of the hydraulic excavator and the integrated value of the work time for each work content can be known, the hydraulic excavators can be distinguished. It can be performed accurately from the viewpoint of work history and work time, and as a result, the price of a used hydraulic excavator can be properly assessed. By connecting a server or computer at a remote location to the above storage unit via an electric communication line so that data can be sent and received between the two, the necessary data regarding the operating status can be sent to the server at a remote location. It can be taken out and used for price assessment.

[0008]

As described above, the conventional assessment method using the “hydraulic excavator assessment report” is to use the document (paper), fill in the document, and perform the manual calculation according to the entry. This was done by a very inefficient work of circulating the created document to each department. Therefore, the efficiency of the assessment work was required.

Further, in the hydraulic excavator described in the above-mentioned Japanese Patent Laid-Open No. 10-60948, the working history of the hydraulic excavator is stored in the storage means equipped in the hydraulic excavator. Information on assessment items such as operating hours can be easily and accurately obtained. In this case, the storage means for storing the work history is mounted on the hydraulic excavator. In addition, in the hydraulic excavator configured to belong to the system so that information can be sent and received to and from the center server of the base station via the electric communication line, the operation data regarding the work history stored in the storage unit is stored. It may be configured to be transmitted to the center server and stored in the storage unit of the base station. With the hydraulic excavator configured as described above or the management system that manages the hydraulic excavator, it is possible to quickly obtain accurate data regarding the operating information of the hydraulic excavator from its storage unit.

As described above, in the price assessment of a used hydraulic excavator using the hydraulic excavator assessment document, factors relating to the assessment include visual inspection by an inspector, the operating state, model, manufacturing date of the hydraulic excavator itself. There are some related to information such as. Among them, the manual work is reduced as much as possible, the input of inspection items is simplified, the information of the hydraulic excavator is easily acquired, and the appraisal price approved in real time can be obtained. It is desirable that the information on the assessed price can be confirmed easily and quickly in real time from any branch, branch office, or head office via the network.

An object of the present invention is to achieve the above-mentioned object, to reduce the manual work, and to easily and accurately obtain the information on the history of the operation of the target construction machine, etc., so that the assessment work can be performed efficiently. It is to provide a price assessment method for a used construction machine intended to be performed accurately.

[0012]

In order to achieve the above-mentioned object, the price valuation method for a used construction machine according to the present invention is configured as follows.

The price valuation method for a used construction machine according to the present invention (corresponding to claim 1) transmits / receives data to / from at least one construction machine via a communication line, and transfers the construction machine to a center server. The management server manages the center server, and the center server is applied to a management system configured to have a storage unit (database) that records at least operation information and maintenance information of the construction machine. In this construction machine management system, each of a plurality of construction machines placed at a work site in a remote place is individually managed. The center server of such a management system is provided with an operation database, a maintenance data server, and a related database that records other related matters as a storage unit. Such operation data and the like are periodically sent from the control device of the construction machine to the center server using the function of the communication device and a telecommunication line such as a communication satellite under normal management, and are recorded. . Partial automation of the price assessment method is realized using the above management system. This price appraisal method includes the step of inputting the data related to the visual inspection of the construction machine using the prepared mobile terminal at the site where the construction machine is placed, and the command to calculate the appraisal value together with the data related to the visual inspection from the mobile terminal. Is transmitted to the center server, and the center server uses the data related to the visual inspection, the operation information and the maintenance information related to the construction machine read from the storage unit, and the construction based on the assessment calculation command. It comprises a step of calculating the assessed amount of the machine, a step of transmitting data relating to the assessed amount to the mobile terminal, and a step of displaying the assessed amount on the display screen of the mobile terminal.

According to the above-mentioned price assessment method for used construction machinery, basically, a visual inspection is carried out in which the assessor looks at the actual construction machinery and confirms the situation by following the conventional assessment items and calculation method. The data acquisition part and the part that acquires history data such as operation data and maintenance data of construction machinery are separated, the former is artificially input as before, and the latter is automatically input by the center server. In addition, the center server also calculates the assessed amount itself. The finally obtained data relating to the assessment amount is transmitted to the assessor's mobile terminal and displayed on the display screen.

The method for assessing the price of a used construction machine according to the present invention (corresponding to claim 2) is the above method, preferably in the above-mentioned step in which the data relating to the visual inspection of the construction machine is input by the portable terminal. The assessment items related to the visual inspection are characterized in that they are prepared by accessing and reading the center server from the mobile terminal. According to this method, it is convenient that the terminal carried by the assessor does not need to prepare a special program or the like, and simple operations such as i-mode can be performed using a mobile phone.

[0016]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

The configurations, shapes, sizes, and positional relationships described in the embodiments are only schematically shown to the extent that the present invention can be understood and implemented, and the numerical values are merely examples. Therefore, the present invention is not limited to the embodiments described below, and can be modified into various forms without departing from the scope of the technical idea shown in the claims.

FIG. 1 shows the overall construction of a construction machine management system to which the price assessment method for a used construction machine according to the present invention is applied. Three hydraulic excavators 11A, 11B, and 11C are shown as an example of a work machine to be managed, and a management server (or center server) 1 is an element for performing management.
2 is shown. The work machine is not limited to the hydraulic excavator. The management server 12 is provided in the base station, and the hydraulic excavators 11A to 11C are respectively provided at work sites located in remote locations. Therefore, a geographical distance exists between the hydraulic excavators 11A to 11C and the management server 12. The hydraulic excavators 11A to 11C and the management server 12 each have a communication unit, and the hydraulic excavators 11A to 11C and the management server 12 bidirectionally communicate data and information via each communication unit and an electric communication circuit. It is configured to be able to. Hydraulic excavator 11 by management server 12
The management of A to 11C is mainly for performing maintenance (maintenance / management / maintenance) of each hydraulic excavator by collecting operation data, maintenance data, and the like from each hydraulic excavator. Actually, in the management system for performing this maintenance, a large number of hydraulic excavators are managed and each maintenance is performed, but for convenience of explanation, three hydraulic excavators 11A of No. 1, No. 2, No. 3, and No. 3 machines are used. Only ~ 11C are shown. Each hydraulic excavator is arranged at each work site, for example.

Each of the hydraulic excavators 11A to 11C is equipped with a control device for transmitting operation data to the management server 12. The control device is composed of a computer,
A communication device, an operation control unit, an arithmetic processing unit, a storage unit and the like are provided. The hydraulic excavators 11A to 11C are configured to be able to send and receive information to and from the outside via a communication device and an electric communication line based on the control device thereof.

The plurality of hydraulic excavators 11A to 11 described above
The management server 12 for managing these hydraulic excavators for C is operated by a manufacturer, rental company, sales company, maintenance management company, or the like. In the management server 12, a computer 13, various input devices 14, a display device (display) 15, an operation database 16 that stores operation data, maintenance data (data by regular inspection, failure repair data, replacement of parts and consumables, etc.)
A maintenance database 17 for storing the information, and a related database (not shown in FIG. 1) for other related matters are provided. The computer 13 of the management server 12 has a communication unit and an arithmetic processing unit as functional parts, and exchanges information (commands, data, etc.) with each of the hydraulic excavators 11A to 11C at a remote place via an electric communication line. Send and receive.

In addition to the original management function unit, the management server 12 operates in accordance with an assessment execution command from the hydraulic excavator side (assessment staff), data provided by the hydraulic excavator side (data relating to visual inspection), and operation. The operating amount data stored in the database 16 and, if necessary, the maintenance data stored in the maintenance database 17 and the like are used to provide an assessment amount calculation unit for performing assessment. Furthermore, when performing an assessment, the necessary necessary inspection items (items related to visual inspection, etc.) prepared are transmitted to the assessor side, if necessary, according to the request based on the access of the assessor. To be done.

An electric communication line (data communication path) is provided between the hydraulic excavators 11A to 11C and the management server 12. The telecommunication lines are communication satellite 18 and ground station 1.
9. It is composed of a public line or the Internet 20. The hydraulic excavators 11A to 11C and the management server 12 are
It is configured to be able to perform bidirectional communication via each communication device and via the electric communication circuit having the above configuration.

In FIG. 1, arrows 21, 22, 23, 2
4 shows a state in which communication is being performed. These are examples.

An arrow 21 indicates a state in which the hydraulic excavator 11A is transmitting the operation data 25 to the management server 12 via the communication satellite 18, the ground station 19 and the like. The operation data 25 indicated by blocks is data relating to the frequency distribution of the engine speed, hydraulic oil temperature, radiator water temperature, pump pressure, etc. of the hydraulic excavator 11A. In the hydraulic excavator 11A, the operation data 25 is obtained by the control device through an operation sensor for various operations, and the operation data is stored in the storage unit. The operation data is collected and stored by the maintenance monitor device. The operation data is transmitted to the management server 12 side by the control device and the communication device of the hydraulic excavator 11A regularly or as needed, and the operation database 1
Recorded in 6.

An arrow 22 indicates a state in which a management server 12 sends a maintenance command to the hydraulic excavator 11B.

Further, an arrow 23 indicates a state in which the switch signals are transmitted to the management server 12 side when various switches provided on the hydraulic excavator 11C are turned on by a service person or an operator. For example, the service personnel perform maintenance work such as periodic inspections, trouble repairs, parts replacements, and consumables replacements, and when the work is completed, press a predetermined switch (maintenance management switch, etc.) The work item is automatically transmitted to the management server 12, and the content thereof is recorded in the maintenance database 17 of the management server 12.

As described above, necessary data and commands are transmitted and received between each of the hydraulic excavators 11A to 11C arranged at each work site and the management server 12 based on bidirectional communication. By constructing such a communication system, the operation data and maintenance data of each hydraulic excavator are recorded in the databases 16 and 17 of the management server 12.

The user 31 can access the management server 12 via the Internet 30 by using the Internet terminal device 32. The user 31 is a person related to any of the hydraulic excavators 11A to 11C,
For example, affiliated companies branch offices, branch offices, and head office personnel. The user 31 can access the assessment information providing homepage prepared by the management server 12, enter the ID and password, and be authenticated for information access, and obtain assessment information such as a hydraulic excavator associated with himself / herself. .

Further, the assessor 33 is, for example, the hydraulic excavator 11
Go to the place where A is placed, and there the relevant hydraulic excavator 1
When carrying out the price assessment of 1A, the assessor 33 has, for example, a mobile terminal, a mobile personal computer, or an i-mode type mobile phone (or a terminal device provided in the hydraulic excavator 11A) 34 via a carrier network 35 and the Internet 36. Access the assessment amount calculation section of the management server 12,
The appraisal amount calculation unit is configured to calculate the appraisal price of the hydraulic excavator 11A and acquire the information. When calculating the valuation price by the valuation calculation unit, necessary visual inspection information is transmitted as data from the valuator 33, and operation data, maintenance data, failure repair data, etc. are sent to the operation database 16 of the management server 12. And maintenance data 17 are retrieved. The details will be described later. In addition, information such as a list of assessment items when inputting data related to visual inspection at the site is also included in the management server 1.
It is possible to take it out from the side of 2.

The configuration of the control device 41 provided in the hydraulic excavator 11A will be described with reference to FIG. This control device 41
Has a function of collecting and storing data regarding the operating state of the hydraulic excavator 11A, maintenance data, and the like, and periodically transmitting the data to the management server 12. The control device 41 functions as a maintenance monitor device.

The control device 41 is composed of a computer. The control device 41 includes a CPU 42, a storage unit (memory) 43, and a sensor input interface (I / F) 4
4, a display interface (I / F) 45, and a communication interface (I / F) 46. Various operation sensors 47 are arranged in various parts of the machine such as an engine of a hydraulic excavator, a hydraulic system, a fuel supply system, a work machine part (attachment), and signals related to the operations detected by these operation sensors 47 are sensor input interfaces 44.
Is input to the CPU 43 via. The CPU 43 stores operation data based on various input operation signals in the storage unit 44. The storage unit 44 stores programs and data for various processes. The stored data includes, in addition to the above-mentioned operation data, data of model / number, information about attachments, maintenance data, and maintenance information. In the operator's cab of the hydraulic excavator, various operating means 48 for issuing operation commands are provided. An operation signal from the operation means 48 is input to the CPU 43. The control device 41 includes a display device 49. This display device 49
Is an in-vehicle display device that is installed in a driver's cab or the like. CP
The data to be displayed is sent from the U43 via the display interface 46, and the display of the maintenance or the like is displayed on the screen of the display device 49. Further control device 41
Is equipped with a communication device 50. The communication device 50 functions as a data communication terminal. Various types of data are transmitted and received between the control device 41 and the management server 12 via the communication device 50. The communication device 50 is a communication interface 47.
It is connected to the CPU 43 via.

Next, the configuration of the management server 12 and the main processing executed therein will be described in detail with reference to FIG.

In FIG. 3, the management server 12 functions as a data storage unit as described above in the operation database (operation D).
B) 16 and maintenance database (Maintenance D
B) 17, and a related database 55 regarding other related matters. Various types of data transmitted from the hydraulic excavators 11A to 11C to the management server 12 via the electric communication line include the communication reception unit 5 of the management server 12.
Received by 1. Further, as described above, the communication receiver 51 also receives data transmitted to the management server 12 by the assessor 33 using the mobile terminal 34 or the like.

After passing through the communication receiving section 51, the data judging section 52 judges the content of the data. When the data is determined to be operation data, the operation data is stored (recorded) in the operation database 16. In the operation database 16, the operation data is organized and recorded in a file 16a provided separately for each model and each machine. When the data is determined to be maintenance data, the maintenance data is also organized and recorded in the maintenance database 17 in a file 17a provided separately for each model and number. The other related data are also recorded in the related database 55 in the same manner. Further, when the data determination unit 52 determines that the data received by the communication reception unit 51 is the assessment amount calculation command and related data (data based on visual inspection) transmitted from the assessor 33, the assessment amount calculation unit 53 described below is used. Instruct to calculate the assessed amount.

The above-mentioned computer 13 of the management server 12
Then, as described above, the appraisal amount calculation unit 53 is provided as a functional means. The appraisal amount calculation unit 53 receives the appraisal amount calculation instruction from the data determination unit 52,
Calculate the appraisal value of the hydraulic excavator for Unit No. In order to calculate the appraisal price of used hydraulic excavators, as mentioned above, it is necessary to have the data obtained by the visual inspection of the hydraulic excavators placed on site, the operating data of the hydraulic excavators, and the maintenance data. To be done. In this case, the data related to the visual inspection is sent from the assessor 33 side. The operation data and maintenance data can be retrieved from the operation database 16 and maintenance database 17 described above. In this way, the appraisal amount calculation unit 53, which has acquired the data related to the visual inspection, the operation data, and the like, calculates the appraisal amount based on a predetermined calculation formula. The calculation formula is basically based on the assessment method adopted in the conventional assessment documents. Assessment amount calculation unit 53
The assessment amount information calculated in
It is transmitted to the mobile terminal 34 of the assessor 33 who has requested the calculation of the assessment amount via the above-mentioned telecommunication circuit.

Next, the price appraisal method according to the present embodiment will be explained. Assessor 33 for assessment of hydraulic excavator 11A
Assessor 33 via communication means (mobile terminal etc.) by
A procedure for calculating an assessment amount and transmitting / receiving assessment data based on bidirectional communication between the management server 12 and the management server 12 will be described with reference to FIG. 4 and with reference to FIGS.

At the first stage, the assessor 33 makes the hydraulic excavator 1
Go to the site where 1A is located. At this time, assessor 33
Has a mobile terminal 34. The mobile terminal 34 has a built-in assessment program for entering assessment items when assessing a used hydraulic excavator. The assessment program has a field for writing assessment items on the display screen of the mobile terminal 34. If the mobile terminal 34 has a small memory capacity such as an Internet-compatible mobile phone, an assessment program for inputting assessment items is prepared on the management server 12 side, and assessment is performed by accessing the mobile phone or the like. It is also possible to take out the program and configure it so that an input regarding the assessment item can be made.

The assessment items related to the visual inspection are displayed by the assessor 33 on the display screen of the mobile terminal 34, and the items are input (step S11). In this step S11, the assessor 33 makes the hydraulic excavator 1
Look at 1A and enter the prescribed assessment items related to the visual inspection based on the visual inspection. Items of the visual inspection of the hydraulic excavator 11A include, for example, oil leakage, scratches or dents in each part regarding the appearance, presence or absence of attachments, and the like. Note that in step S11, the assessor 33 also inputs information such as the model, machine number, and age of the hydraulic excavator 11A to the mobile terminal 34.

After inputting all the data related to the visual inspection, the assessor 33 uses the communication function of the mobile terminal 34 to assess the management server 12 via the carrier network 35 and the Internet 36. An amount calculation command and assessment data D1 are transmitted (step S12). At this time, the data of the hydraulic excavator model and machine number are also transmitted at the same time.

In the management server 12, the communication receiving section 51 receives the evaluation amount calculation command and the evaluation data D1 (step S).
13). The data determination unit 52 determines whether or not the received data is the assessment amount calculation command and the assessment data D1 (step S14), and when YES, sends the assessment amount calculation command and the assessment data D1 to the assessment amount calculation unit 53 ( Step S1
5). If NO in determination step S14, the data is normally operation data and maintenance data or the like that are periodically transmitted by the hydraulic excavator control device 41, so the data is stored in the operation database 16, the maintenance database 17, and the like. The data is sent and recorded in each of the databases 16, 17, 55 (step S16).

The appraisal amount calculation unit 53 calculates the appraisal amount for the hydraulic excavator 11A based on the above-mentioned appraisal amount calculation command (step S17). Step S for calculating this assessed amount
In 17, the assessment method itself is the same as the conventional method, so assessment data relating to visual inspection, operation data, maintenance data, and the like are used. The data sent by the assessor 33 is used as the assessment data for the visual inspection (step S17a). The operation data and the maintenance data have already been sent to the management server 12 from the control device 41 of the hydraulic excavator 11A at regular intervals, and as history information, the corresponding files 16a, 17 designated by the machine in the operation database 16 and the maintenance database 17 are used.
It is recorded in a. Therefore, the assessed amount calculation unit 53 extracts the operation data and the maintenance data as history from the files 16a and 17a corresponding to the hydraulic excavator 11A (step S17b). Finally, the assessment amount is calculated based on a predetermined calculation formula using the assessment data and the operation data and the maintenance data (step S17).
c).

When the calculation of the assessed amount by the assessed amount calculating unit 53 is completed, the assessed amount data is transmitted to the portable terminal 34 through the communication transmitting unit 54 and the telecommunication line together with the data showing the calculated contents. (Step S18). The mobile terminal or the like 34 of the assessor 33 receives the data such as the assessed amount, and the display screen displays the data based on the assessed amount sent from the management server 12 and the data relating to the calculated content of the assessed ( Step S19). As a result, the assessor 33 can obtain information relating to the assessed amount and present it to the owner of the hydraulic excavator 11A or the like on the spot.

In the assessment amount calculation step S17 in the above-mentioned flow chart shown in FIG. 4, the base assessment amount is determined based on the model and year information. The base appraisal amount is usually determined by the appraisal amount calculating unit 53, since the related database or the like is provided with a conversion table for the amount of base appraisal according to the age for each model / year model. Items related to visual inspection and other accident history will be deducted from the base assessment as a negative assessment. In addition, when there are other factors such as attachments, options, and renewals in calculating the assessment amount, a positive assessment is added. The attachment refers to the option list of the related database, the option refers to the option list of the related database, and the renewal refers to data such as parts replacement and external painting in the related database. As another incidental item in the calculation of the assessed value, this is also taken into consideration in the calculation of the assessed value when the contract is a target of full maintenance.

FIG. 5 shows another embodiment of the price valuation method according to the present invention. The basic procedure is the same as the flowchart shown in FIG. In the case of this embodiment, since the change is made in step S17 of the assessment amount calculation,
Only the contents of step 17 are shown. In this step S17 of calculating the assessed amount, step S17a of using the assessed data relating to the visual inspection, step S17b of extracting the operating data and maintenance data, and step S17c of calculating the assessed amount using the assessed data and the operating data and maintenance data. In addition to the above, there is provided a step S17d for taking out information on trouble / repair information and inspection (oil exchange, etc.) and a step S17e for taking out information on the area / place of work. Information on areas / places of breakdowns / repairs, inspections, and work is transmitted to the management server 12 in advance and recorded in a file for each hydraulic excavator in the related database. In the assessment amount calculation in step S17c, failure / repair information, inspection information, and work area / place information are taken into consideration. For example, when the site of the hydraulic excavator 11A is a tunnel or a shore, a negative assessment is made.

According to the price assessment method for a used hydraulic excavator based on the above-mentioned embodiment, the operation data and the like can use the data previously recorded as the history in the operation database 14 of the management server 12 and the assessment amount calculation. Can also be automatically performed by the appraisal amount calculation unit 53 provided as a functional unit in the management server 12. From the side of assessor 33,
Since it suffices to send the data relating to the visual inspection to the management server side using the mobile terminal 34 and the communication line, it is possible to automate the assessment work. Since the data recorded in the various databases of the management server 12 are accurate data,
An accurate assessment can be made. Especially when selling used construction equipment at an internet auction,
The price valuation method according to the above embodiment is considered to be preferable, since the valuation under accurate data is the basis of credibility.

The appraisal amount relating to the hydraulic machine 11A obtained by the appraisal amount calculating section 53 in the management server 12 is the management server 1
It is configured so that it can be viewed by outside parties by registering on the homepage for assessing used construction machinery prepared in 2.

[0047]

As is apparent from the above description, according to the present invention, the assessor inputs only the items relating to the visual inspection at the place where the construction machine is placed, and thereafter the assessment data is assessed together with the inspection data to the center server side. On the other hand, the center server sends a command to calculate the amount, and on the other hand, the center server uses the data related to the visual inspection sent according to the instructor's instructions and the operation data retrieved from the operation database etc. based on a predetermined evaluation amount calculation formula. Since the assessment amount is obtained and sent to the assessor side, automation of price assessment of used construction machinery is achieved as much as possible, the manual work of the assessor is reduced, the burden of assessment work is reduced, and the target Information on the work history of a certain construction machine can be easily and accurately obtained, so that the assessment work can be performed efficiently and accurately.

[Brief description of drawings]

FIG. 1 is a system diagram showing an overall configuration to which a price assessment method for a used construction machine according to the present invention is applied.

FIG. 2 is a block diagram showing an internal configuration of a control device provided in each hydraulic excavator.

FIG. 3 is a block diagram showing an internal configuration of a management server.

FIG. 4 is a flowchart for explaining a price valuation method according to the present embodiment.

FIG. 5 is a partial flowchart showing another embodiment of the step of calculating the assessed amount.

[Explanation of symbols]

11A, 11B, 11C hydraulic excavator 12 Management server 16 operational database 17 Maintenance database 18 communication satellites 33 Assessor 34 Mobile terminals, etc. 35 carrier network 36 Internet 52 Data determination unit 53 Assessment amount calculation department

Continued front page    (72) Inventor Yutaka Onoe             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Kiyoshi Ono             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Hiroshi Watanabe             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Toichi Hirata             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory F-term (reference) 2D003 AA01 BA04 BA08 DA04 DB07

Claims (2)

[Claims] 1. Data is transmitted and received to and from at least one construction machine via a communication line, and the construction machine is managed by a center server, and the center server manages at least operation information and maintenance of the construction machine. The method is applied to a management system configured to have a storage unit for recording information, and the data related to visual inspection of the construction machine is input at the site where the construction machine is placed using a prepared mobile terminal. A step in which an assessment amount calculation command is transmitted from the mobile terminal together with data relating to the visual inspection to the center server; data relating to the visual inspection based on the assessment amount calculation command in the center server; Calculating an appraisal amount of the construction machine using operation information and maintenance information concerning the construction machine read from the department; A method of valuing a price of a used construction machine, comprising: transmitting data relating to the assessed amount to the mobile terminal; and displaying the assessed amount on a display screen of the mobile terminal. 2. In the step of inputting data relating to a visual inspection of the construction machine on a mobile terminal, assessment items relating to a visual inspection are prepared by accessing the center server from the mobile terminal and reading out the assessment items. The method for assessing the price of a used construction machine according to claim 1, wherein: