JP2018138479A - Maintenance system for cargo vehicle capable of switching between manned operation and unmanned operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance system which can accurately grasp the approaching of the replacement time of the consumable parts comprising the cargo vehicles capable of switching between the manned operation and unmanned operation.SOLUTION: The maintenance system 10 related to the present invention comprises a management device 11 of the cargo vehicles capable of mutual communication with cargo vehicles F1, F2, F3. The management device 11 of the cargo vehicles determines whether or not the replacement time of the consumable parts of the cargo vehicles F1, F2, F3 is approaching by using the total use time which is the sum of a first use time and a second use time, where the first use time is a product of the unmanned operating time of the cargo vehicles F1, F2, F3 and a first coefficient α1, and the second use time is a product of the manned operating time of the cargo vehicles F1, F2, F3 and a second coefficient α2 (where α2>α1).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a maintenance system for a cargo handling vehicle that can be switched between an unmanned operation and a manned operation, and in particular, a maintenance system that can accurately grasp that the time for replacement of consumable parts constituting the cargo handling vehicle is approaching. About.

  Conventionally, in various fields, replacement of consumable parts is performed depending on whether or not the cumulative value of the use time (number of times) of the consumable parts has reached a predetermined replacement time (number of times). In this regard, in Patent Document 1, the life operation frequency and life operation time of the consumable part are stored in a database, and the fact that the operation frequency of the consumable part has reached the reference value obtained from the life operation frequency, etc. Also, the product of the operating time of the consumable part and the usage status of the consumable part (the brake force when the consumable part is a brake. The difference between the temperature and the set temperature when the consumable part is an air conditioner) Informing that the required standard value has been reached is described.

Japanese Patent No. 4901349

  By the way, as a result of the investigation by the present inventors, it has been found that in a cargo handling vehicle that can be switched between unmanned operation and manned operation, there is a difference in the degree of consumption of consumable parts depending on which operation is being performed. Specifically, consumable parts of this type of cargo handling vehicle are consumed relatively slowly in unmanned operation where only gentle operation is performed, and are consumed relatively quickly in manned operation where abrupt operation is often performed. Therefore, by simply applying the conventional method as described in Patent Document 1, it is precisely timed to replace the consumable parts constituting the cargo vehicle that can be switched between unmanned operation and manned operation. I can't figure it out.

  The present invention has been made in view of the above circumstances, and is capable of accurately grasping that the replacement time of consumable parts constituting a cargo handling vehicle that can be switched between unmanned operation and manned operation is approaching. The problem is to provide a system.

  In order to solve the above problems, a maintenance system according to the present invention is a maintenance system for a cargo handling vehicle that can be switched between unmanned operation and manned operation, and includes a cargo handling vehicle management device that can communicate with the cargo handling vehicle. The cargo handling vehicle management device includes a first usage time that is a product of a time during which the cargo handling vehicle is unmanned and a first factor, a time during which the cargo handling vehicle is manned, and a second greater than the first factor. It is determined whether or not the replacement time of the consumable part of the cargo handling vehicle is approaching, using the total use time that is the sum of the second use time that is the product of the coefficient.

  The manned operation includes the first mode and the second mode in which the burden on the consumable parts is expected to be larger than the first mode, and the second coefficient includes the third coefficient and the fourth coefficient larger than the third coefficient. If included, the cargo handling vehicle management device of the maintenance system may include a product of the time during which the manned operation of the first aspect is performed and the third coefficient, the time during which the manned operation of the second aspect is performed, and the fourth. The second usage time may be obtained by taking the sum of the product with the coefficient.

  In the case where the maintenance system further includes an inventory management device that manages the inventory of consumable parts, the cargo handling vehicle management device determines that the consumable parts replacement time is approaching via the inventory management device when it is determined that the replacement time of the consumable parts is approaching. It may be confirmed whether or not the parts are in stock.

  When the maintenance system further includes an ordering device for placing an order for consumable parts, the cargo handling vehicle management device confirms that the consumable parts are out of stock via the inventory management device, and then supplies the consumable parts to the ordering device. When the delivery date of the consumable part is received from the ordering device and the delivery date is expected to be later than the replacement time, switching of the cargo handling vehicle to manned operation may be prohibited.

  An example of the cargo handling vehicle is a forklift. In this case, the cargo handling vehicle management apparatus can recognize the manned operation of the forklift as the first mode or the second mode based on one or more of the travel speed, acceleration, deceleration, and fork lifting speed of the forklift. .

  ADVANTAGE OF THE INVENTION According to this invention, the maintenance system which can grasp | ascertain exactly that the replacement | exchange time of the consumable parts which comprise the cargo handling vehicle which can be switched to unmanned operation and manned operation is approaching can be provided.

It is a block diagram of the maintenance system concerning the present invention. It is a figure which shows an example of the driving | running state of three forklifts. It is a figure which shows an example of the data stored in the consumable parts database of the maintenance system which concerns on this invention.

  Embodiments of a maintenance system according to the present invention will be described below with reference to the accompanying drawings.

[Example]
FIG. 1 shows a maintenance system 10 according to the embodiment. As shown in the figure, the maintenance system 10 is connected to the cargo handling vehicle management device 11 that can communicate with the forklifts F1, F2, and F3 that perform cargo handling work in the cargo handling work area A, and the cargo handling vehicle management device 11. A cargo handling work database 12 is provided. The forklifts F1, F2, and F3 are vehicles that can be switched between unmanned operation and manned operation, corresponding to the “loading vehicle” of the present invention.

  The cargo handling work database 12 stores data related to the cargo handling work to be performed by the forklifts F1, F2, and F3.

  The cargo handling vehicle management device 11 refers to the cargo handling work database 12 and allocates appropriate cargo handling work to each of the forklifts F1, F2, and F3. As a result, the forklifts F1, F2, and F3 perform the assigned cargo handling work unattended.

  In addition, the cargo handling vehicle management device 11 selects one forklift to be manned from the forklifts F1, F2, and F3. And the cargo handling vehicle management apparatus 11 commands the selected forklift to move to the standby area B provided in the cargo handling work area A without assigning the cargo handling work.

  The operator can board the forklift waiting in the waiting area B and operate the switch provided in the driver's seat to switch the forklift to a state where it can be operated by manpower. Further, the operator can switch the forklift to a state where it can be operated unattended by moving the forklift to the standby area B after operating a desired cargo handling operation and operating the aforementioned switch. When the cargo handling vehicle management device 11 detects switching to unmanned operation, the cargo handling vehicle management device 11 allocates a new cargo handling operation to the forklift.

  The cargo handling vehicle management apparatus 11 may always wait for one forklift, or only for a predetermined waiting time (for example, 10 minutes) every predetermined time (for example, 30 minutes). One forklift may be put on standby.

  Regardless of whether the vehicle is unmanned or manned, the forklifts F1, F2, and F3 report data related to their own driving state to the cargo handling vehicle management device 11 substantially in real time. Thereby, the cargo handling vehicle management apparatus 11 can always grasp | ascertain the driving | running state of the forklifts F1, F2, F3. The data relating to the driving state sent to the cargo handling vehicle management device 11 includes whether or not manned driving is being performed, whether or not unmanned driving is being performed, traveling speed, lift lifting speed, and the like.

  The maintenance system 10 further includes an operation history database 13 connected to the cargo handling vehicle management device 11. The operation history database 13 includes a cumulative value of times when the forklifts F1, F2, and F3 are unmanned (hereinafter referred to as “unmanned cumulative time”) and a cumulative value of times when the first mode of manned operation is performed (hereinafter referred to as “unmanned cumulative time”). , “First manned accumulated time”), and a cumulative value of the time when the second mode of manned driving was performed (hereinafter, referred to as “second manned accumulated time”). Here, “the manned driving of the first mode” means that the burden on the consumable parts in which at least one of the traveling speed, acceleration, deceleration, and lifting / lowering speed of the lift is below a predetermined threshold is relatively small. Means manned driving. The “second mode of manned driving” means manned driving other than the first mode of manned driving, that is, manned driving expected to have a relatively large burden on consumable parts.

  The cargo handling vehicle management apparatus 11 updates the data (cumulative time) stored in the operation history database 13 based on the data regarding the operation state sent from the forklifts F1, F2, and F3.

  For example, in the situation shown in FIG. 2, the unmanned operation time of the forklift F1 between time 8:00 and time 17:00, the manned operation time of the first mode, and the manned operation time of the second mode are 2 respectively. Time (8:00 to 10:00), 3.5 hours (11: 0 to 12:00, 13: 00 to 14:00, 15:30 to 17:00), 2.5 hours (12: 00 to 00: 00) 13:00, 14: 00 to 15:30), during this time, the cargo handling vehicle management device 11 causes the unmanned accumulated time, the first manned accumulated time, and the second manned accumulated of the forklift F1 stored in the operation history database 13. Add 2 hours, 3.5 hours and 2.5 hours to the time.

  The unmanned accumulated time, the first manned accumulated time, and the second manned accumulated time of the forklifts F2 and F3 stored in the operation history database 13 are similarly updated.

  The maintenance system 10 further includes a consumable part database 14 connected to the cargo handling vehicle management apparatus 11. As shown in FIG. 3, the consumable parts database 14 stores the total use time and the usable time for each of the consumable parts a, b, c... Of each forklift F1, F2, F3. Here, the usable time means a predetermined time during which the consumable part can be used continuously. Consumable parts that have reached their total usable time must be replaced.

  Based on the unmanned accumulated time, the first manned accumulated time, and the second manned accumulated time stored in the driving history database 13, the cargo handling vehicle management device 11 performs a total usage time of each consumable part a, b, c. Is calculated. For example, when the unmanned accumulated time, the first manned accumulated time, and the second manned accumulated time of the forklift F1 are 500 hours, 200 hours, and 50 hours, the cargo handling vehicle management apparatus 11 sets the unmanned accumulated time to 500 hours and the coefficient α1. (In this embodiment, α1 = 1.0) is the product of 500 hours, the first manned cumulative time is 200 hours, and the coefficient α3 (in this embodiment, α3 = 1.1). Consumable parts constituting the forklift F1 of 780 hours, which is the sum of 220 hours and 50 hours which is the second manned cumulative time and the coefficient α4 (α4 = 1.2 in the present embodiment). The total usage time of a, b, c.

  Here, the coefficient α1, the coefficient α3, and the coefficient α4 correspond to the “first coefficient”, “third coefficient”, and “fourth coefficient” of the present invention. Manned operation is expected to have a greater burden on consumable parts than unmanned operation. The manned operation of the second aspect is expected to have a greater burden on the consumable parts than the manned operation of the first aspect. Considering these things, the coefficients α1, α3, and α4 are set to have a relationship of “α1 <α3 <α4”.

  When the cargo handling vehicle management device 11 receives the data relating to the driving state from the forklifts F1, F2, and F3, it updates the unmanned cumulative time, the first manned cumulative time, and the second manned cumulative time stored in the driving history database 13, The total usage time stored in the consumable parts database 14 is updated.

  The maintenance system 10 further includes an inventory management device 15 and an ordering device 16 connected to the cargo handling vehicle management device 11. The cargo handling vehicle management device 11 stores the total use time and the usable time of at least one of the consumable parts a, b, c... Stored in the consumable part database 14 (for example, the consumable part b of the forklift F2). When the relationship becomes a predetermined relationship (usable time-total usage time <100 hours in this embodiment), it is determined that the replacement time of the consumables b is approaching, and the consumable parts are connected via the inventory management device 15. Check if b is in stock. When there is a stock, the cargo handling vehicle management device 11 secures the stock for the forklift F2. On the other hand, when there is no stock, the cargo handling vehicle management device 11 causes the ordering device 16 to place an order for the consumable part b and receives data related to the delivery date of the consumable part b from the ordering device 16.

  When the cargo handling vehicle management device 11 receives data related to the delivery date of the consumable part b from the ordering device 16, the cargo handling vehicle management device 11 compares the available time of the consumable part b of the forklift F2 with the latest total use time and the delivery date. When the difference between the usable time and the total usage time is shorter than the delivery time, the cargo handling vehicle management apparatus 11 causes the forklift F2 to perform only the cargo handling work by unmanned operation. In other words, the cargo handling vehicle management apparatus 11 prohibits the forklift F2 from moving to the standby area B. On the other hand, when the difference between the usable time and the total usage time is longer than the delivery date, the cargo handling vehicle management device 11 causes the forklift F2 to perform cargo handling work by unmanned operation and manned operation as usual.

  For example, when the difference between the usable time and the total usage time is 90 hours and the delivery time is 80 hours, the cargo handling vehicle management apparatus 11 causes the forklift F2 to perform cargo handling work by unmanned operation and manned operation as usual. . This is because the consumable parts can be used before the total use time reaches the usable time. On the other hand, when the difference between the usable time and the total usage time is 90 hours and the delivery time is 100 hours, the cargo handling vehicle management apparatus 11 causes the forklift F2 to perform only the unloading operation. This is because the forklift F2 is used as long as possible by delaying the total use time from reaching the usable time.

[Modification]
Although the embodiments of the maintenance system according to the present invention have been described above, the configuration of the maintenance system according to the present invention is not limited to this.

  For example, the driving history database 13 may store a “manned cumulative time” that is the sum of these, instead of the first manned cumulative time and the second manned cumulative time. In this case, the cargo handling vehicle management apparatus 11 calculates the sum of the product of the unmanned accumulated time and the coefficient α1 (for example, α1 = 1.0) and the product of the manned accumulated time and the coefficient α2 (for example, α2 = 1.2). It can be the total usage time. Here, the coefficient α2 corresponds to the “second coefficient” of the present invention. Manned operation is expected to have a greater burden on consumable parts than unmanned operation. Therefore, the coefficients α1 and α2 are set to have a relationship of “α1 <α2”.

  Moreover, the cargo handling vehicle management apparatus 11 may perform inventory confirmation triggered by the ratio of the available time to the total usage time exceeding a predetermined value (for example, 90%).

  Moreover, the cargo handling vehicle management apparatus 11 may determine whether or not the delivery date is later than the replacement time in consideration of the past driving history. More specifically, the cargo handling vehicle management apparatus 11 is configured to calculate the difference between the usable time and the total use time for a forklift that is frequently manned (forklift that is expected to be frequently manned in the future). A product with a coefficient exceeding 0 may be obtained, and the product and the delivery date may be compared. Thereby, it can be determined more reliably whether the delivery date is in time.

  Moreover, the cargo handling vehicle management apparatus 11 may prohibit the switch to manned driving by invalidating the operation of the switch provided in the driver's seat.

  A forklift is just an example of a cargo truck.

  The values of the coefficients α1, α2, α3, α4 and the number of forklifts (three) are just examples.

DESCRIPTION OF SYMBOLS 10 Maintenance system 11 Handling vehicle management apparatus 12 Handling work database 13 Operation history database 14 Consumable parts database 15 Inventory management apparatus 16 Ordering apparatus A Handling work area B Waiting area F1-F3 Forklift (loading vehicle)

In order to solve the above problems, a maintenance system according to the present invention is a maintenance system for a cargo handling vehicle that can be switched between unmanned operation and manned operation, and a cargo handling vehicle management device that can communicate with the cargo handling vehicle. , An inventory management device that manages the inventory of consumable parts, and an ordering device that orders consumable parts . The cargo handling vehicle management device includes: (1) a product of a time during which the cargo handling vehicle is unmanned and a first coefficient. Using the total usage time which is the sum of the first usage time and the second usage time which is the product of the time during which the cargo handling vehicle is manned and the second factor greater than the first factor. It is determined whether or not the replacement time of the consumable part is approaching , and (2) if it is determined that the replacement time of the consumable part is approaching, whether or not the consumable part is in stock via the inventory management device And (3) the consumable parts via the inventory management device. When confirming that there is no inventory, let the ordering device place an order for the consumable part, receive data on the delivery date of the consumable part from the ordering device, and if the delivery date is expected to be later than the replacement time, Prohibit the switching of cargo vehicles to manned driving .

Claims (6)

A maintenance system for a cargo vehicle that can be switched between unmanned operation and manned operation,
A cargo handling vehicle management device capable of mutual communication with the cargo handling vehicle;
The cargo handling vehicle management device includes a first usage time that is a product of a time during which the cargo handling vehicle is unmanned and a first factor, a time during which the cargo handling vehicle is being manned, and the first factor. And determining whether or not replacement time of consumable parts of the cargo handling vehicle is approaching, using a total use time that is a sum of a second use time that is a product of a larger second coefficient. system. The manned operation includes a first aspect and a second aspect that is expected to have a greater burden on the consumable parts than the first aspect.
The second coefficient includes a third coefficient and a fourth coefficient larger than the third coefficient,
The cargo handling vehicle management device includes a product of a time during which the manned operation according to the first aspect is performed and the third coefficient, a time during which the manned operation according to the second aspect is performed, and the fourth coefficient. The maintenance system according to claim 1, wherein the second usage time is obtained by taking a sum with a product. An inventory management device for managing inventory of the consumable parts;
The cargo handling vehicle management device, when it is determined that the replacement time for the consumable parts is approaching, checks whether the consumable parts are in stock via the inventory management device. The maintenance system according to claim 1 or claim 2. An ordering device for ordering the consumable parts;
When it is confirmed that the consumable parts are out of stock via the inventory management apparatus, the cargo handling vehicle management apparatus causes the ordering apparatus to place an order for the consumable parts, and the delivery date of the consumable parts from the ordering apparatus. 4. The maintenance system according to claim 3, wherein the maintenance system prohibits switching of the cargo handling vehicle to the manned operation when the delivery date is expected to be later than the replacement time. The maintenance system according to any one of claims 2 to 4, wherein the cargo handling vehicle is a forklift. The cargo handling vehicle management device recognizes the manned operation of the forklift as the first mode or the second mode based on one or more of the traveling speed, acceleration, deceleration, and fork lifting speed of the forklift. The maintenance system according to claim 5.

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