JP2020164294A - Delivery method of gas vessel and gas delivery system - Google Patents

Abstract

To reduce distribution cost in a gas delivery system for delivering gas vessels.SOLUTION: A delivery method of gas vessels in a gas delivery system including: a hub base for charging the gas vessel with a gas carried from a primary base, a depot which is a depot for storing the gas vessels delivered from the hub base to a customer's home in a delivery area and makes a trailer for carrying the gas vessels between the hub base and the depot a gas vessel storage location, and a delivery system connected to a portable terminal of a delivery staff delivering the gas vessel via a network. In the depot, a plurality of lanes being the storage location of the trailer are provided, and, till morning of a delivery scheduled date, the trailer on which the charged gas vessels are loaded is carried to an idle lane, and the trailer on which the used gas vessels are replaced is carried out, thereby, while securing desired stock, the gas vessels delivered to the customer's home at the delivery scheduled date by the delivery staff in charge of the delivery area provided to the depot is carried in.SELECTED DRAWING: Figure 2

Description

The present invention relates to a gas container delivery method and a gas delivery system, and more specifically, a gas container for delivering a gas container filled with liquefied petroleum (LP) gas to a general household, an apartment house, a business establishment, or the like. Regarding delivery methods and gas delivery systems.

Conventionally, LP gas is divided into imports from gas-producing countries and domestic production produced as a by-product in the production process of petroleum products. Import bases and oil refinery bases that store LP gas transported by tankers from gas-producing countries are called primary bases, respectively. LP gas is loaded from the primary base onto coastal vessels and tank trucks and shipped to the secondary base, which is a relay station located along the coast or inland. Further, the LP gas carried to the secondary base is transported to LP gas filling stations in various places and filled in a gas container (gas cylinder) at the filling station.

The gas container filled at each filling station is delivered by a delivery person to a customer's house such as a general household, an apartment house, or an office. The empty gas container in the customer's house is replaced with the filled gas container, and the empty gas container is collected in the filling station. At the filling station, the LP gas is filled in the gas container again and delivered to the customer's house.

At each filling station, a delivery area for delivery personnel is set. The delivery person is given a delivery slip for 2 to 10 days to be delivered to the customer's house in the delivery area. The delivery slip is created by the delivery manager. First, the remaining amount of LP gas in the gas container is predicted based on the past gas usage record, meter pointer of the gas meter at the customer's house, delivery record, etc. for each customer, and the next gas container delivery schedule. The day is decided. The delivery amount of the gas container for 2 to 10 days is determined by accumulating all the customers in the delivery area in charge of the delivery staff.

When the gas container is replaced according to the delivery slip, the delivery person fills in the replacement date, the meter pointer of the day, the container number, and the security inspection items on the delivery slip. The delivery slip is submitted to the delivery manager when the daily delivery work is completed. The delivery slip returned to the delivery manager is checked by the delivery manager for omissions, and then stored as data for calculating the next scheduled delivery date.

Japanese Patent No. 5496236

As described above, the cost of supplying LP gas is dominated by the distribution cost of filling work and delivery work. Therefore, in order to streamline the delivery of gas containers, the filling work at each filling station is collectively performed at the secondary base to serve as a base for delivery staff, or the secondary base is omitted to reduce distribution costs. The equipment in the distribution channel is being reviewed.

In addition, in order to improve operational efficiency, in the delivery from the filling station to the customer's house, the remaining amount of LP gas in the gas container is predicted precisely, and the delivery staff is moved according to the capacity of the delivery staff. The number of deliveries to the customer's home is reduced and the distribution cost is reduced by arranging the gas in a similar manner (see, for example, Patent Document 1).

However, the distribution cost in the intermediate stage from the primary base to the filling station has not been reduced.

An object of the present invention is to provide a gas container delivery method and a gas delivery system capable of significantly reducing distribution costs in an intermediate stage such as a filling station.

In one embodiment of the present invention, in order to achieve such an object, a hub base for filling a gas container with gas carried in from a primary base and a gas container for delivering gas from the hub base to a customer's house in a delivery area. A depot that uses a trailer for transporting a gas container between the hub base and the depot as a gas container storage place, and a mobile terminal of a delivery person who delivers the gas container via a network. A method of delivering a gas container in a gas delivery system including a connected delivery system, wherein a plurality of lanes for storing the trailer are provided in the depot, and the gas container is filled by the morning of the scheduled delivery date. By carrying the trailer loaded with the gas into an empty lane and carrying out the trailer replaced with a used gas container, the delivery staff in charge of the delivery area provided in the depot while securing the desired inventory The gas container to be delivered to the customer's house is delivered on the scheduled delivery date.

The delivery system receives work data including the number of delivered gas containers from the mobile terminal of the delivery person in charge of the delivery area provided in the depot, and the delivery person delivers the work data on the day before the scheduled delivery date. The delivery data by the first delivery person including the number of gas containers and the work data are aggregated for all the delivery persons in charge of the delivery area of the depot, and the number of stocks remaining in the delivery on the previous day at the depot is calculated. The second delivery data for each delivery member, including the number of gas containers delivered by the delivery member on the scheduled delivery date, is aggregated for all the delivery members in charge of the delivery area of the depot, and the number of stocks is calculated. It is characterized in that the number of gas containers to be delivered to the depot is calculated by deducting the data by the morning of the scheduled delivery date.

According to the present invention, the carrier can replace the gas container at the depot simply by replacing the trailer, so that the work load is small and the distribution cost can be significantly reduced. Further, by constructing a gas delivery system in which the delivery system and the mobile terminal are linked, the delivery status of the gas container can be grasped in real time, and the delivery efficiency of the gas container can be improved.

It is a figure which shows the whole structure of the gas delivery system which concerns on one Embodiment of this invention. It is a figure which shows the structure of the depot which concerns on one Embodiment of this invention. It is a figure which shows the structure of the trailer which concerns on one Embodiment of this invention. It is a figure which shows the structure of the information processing system which concerns on one Embodiment of this invention. It is a flowchart which shows the method of creating the depot delivery data in the delivery system which concerns on one Embodiment of this invention. It is a figure which shows the arrangement of the trailer of the 1st depot on the 16th. It is a figure which shows the arrangement of the trailer of the 1st depot on the 17th. It is a figure which shows the arrangement of the trailer of the 1st depot on the 18th. It is a figure which shows the arrangement of the gas container to be loaded on a trailer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Gas container delivery system)
FIG. 1 shows the overall configuration of a gas delivery system according to an embodiment of the present invention. The primary base 101 is an import base or an oil refining base for storing LP gas transported by tanker from a gas-producing country, as in the past. A hub base 102 is installed in the vicinity of the primary base 101. The hub base 102 has the function of a filling station.

Further, a plurality of depots 103a-103c will be installed under the hub base 102. The installation location of the depot 103 corresponds to a conventional filling station, but it does not have equipment for filling work, and serves as a base for delivery staff simply as a container storage for gas containers. As in the conventional case, the delivery area is determined in advance in each depot 103, and the delivery staff in charge of each delivery area can deliver the gas container to the customer's house in the delivery area. As another embodiment, the arrangement of the depot and the setting of the delivery area may be performed separately, and the gas container may be loaded from the designated depot for each delivery person and delivered to the customer's house in charge.

Conventionally, the transportation of LP gas between the primary base and the secondary base and the transportation of LP gas between the secondary base and the filling station have been carried out by a tank truck. It was unloaded from each gas tank installed at the primary base, secondary base and filling station, and loaded into the gas tank. Therefore, since it takes a long time to move between tank truck bases and it takes time to handle cargo at each base, transportation between bases is limited to one or two round trips a day. In the present embodiment, since the hub base 102 is installed in the vicinity of the primary base 101, the movement time of the tank lorry 104 between the primary base 101 and the hub base 102 is short, and it is possible to carry out round-trip transportation for several days.

At the hub base 102, the gas containers that have been filled at the plurality of filling stations are filled together. Therefore, the equipment cost can be reduced by consolidating various equipments such as gas tanks and filling machines. In addition, it is possible to respond to legal inspections, consolidate security personnel, and reduce operating costs. Furthermore, fluctuations in demand for LP gas for each delivery area set in the depot 103 can be absorbed, and the efficiency of filling work can be improved.

(Structure of depot)
FIG. 2 shows the structure of the depot according to the embodiment of the present invention. The containers filled at the hub base 102 are loaded on the trailer 105a, towed by the tractor 105b, and delivered to each depot 103. FIG. 2 shows an outline of a depot with two trailer 105a storage locations (hereinafter referred to as lanes), FIG. 2A is a plan view, and FIG. 2B is a side view seen from the arrow direction of the plan view. The depot 103 is provided with a roof 131 that covers the lane, and a rest room 132 that handles a tractor / trailer, a delivery person assigned to the depot 103, and the like. The tractor 105a pulls a trailer 105b equipped with a gas container filled with LP gas (hereinafter referred to as a filling container) from a hub base 102 to a depot 103, and a used gas container (hereinafter referred to as a residual gas container) is used. The mounted trailer 105c is towed from the depot 103 to the hub base 102.

When the trailer 105b for transporting the gas container is separated from the tractor 105a, it becomes a gas container storage place, and the roof 131 that blocks direct sunlight, the fence that restricts the entry of people, and the gate 133 meet the legal requirements. Be part of a equipped unmanned container storage. In addition, unlike conventional secondary bases and filling stations, various facilities such as gas tanks and filling machines are not required, and there is no need to respond to legal inspections or security personnel, so equipment opening costs and operating costs are reduced. It can be significantly reduced.

Note that FIG. 2 shows the case of two lanes for convenience of explanation, but generally, a depot of four to a dozen lanes is operated. Details will be described later.

FIG. 3 shows the structure of the trailer according to the embodiment of the present invention. In the trailer 105b, the loading platform of the gas container has two stages, a lower stage 151 and an upper stage 152. Both a large gas container (50 kg cylinder) and a small gas container (20 kg cylinder and 30 kg cylinder) can be loaded on the lower 151, but only a small gas container can be loaded on the upper 152. Further, the height of the loading platform of the lower 151 is matched with the height of the loading platform of the delivery truck 106. Therefore, if the rear end of the loading platform of the truck 106 is attached to the lower 151 of the trailer 105b, the filling container can be directly loaded from the trailer 105b to the truck 106, or the residual gas container can be directly loaded from the truck 106 to the trailer 105b.

Since the trailer becomes a gas container storage place as it is, it is not necessary to install a gas tank and a dedicated gas container storage place as in the conventional filling place, and the depot space can be made smaller than the filling place.

The transportation between the hub base 102 and the depot 103 will be described in detail later, but the container according to the demand forecast result of the next day may be delivered by the previous day. Even if the transportation distance between the hub base 102 and the depot 103 is long, the travel time can be shortened by moving at night. Further, the cargo handling work at the depot 103 only involves separating the trailer 105b from the tractor 105a and moving the gas container from the loading platform of the trailer 105b to the loading platform of the delivery truck 106, so that the cargo handling work time can be shortened. , The cost of transportation can be reduced. Further, at the hub base 102, the residual gas container can be collected by the morning, filled in the daytime, and delivered at night, so that the work efficiency at the hub base 102 is also improved.

Delivery from the depot 103 to customers such as ordinary households, apartment houses, and business establishments is carried out by a small delivery truck 106 as before. In this way, the distribution cost can be reduced by reviewing the arrangement of bases such as hub bases and depots.

(Information processing system)
Next, an information processing system for operating the gas delivery system according to the present embodiment will be described. By grasping the delivery status of the gas container in real time using a mobile terminal, the delivery of the gas container from the hub base 102 to the depot 103 and from the depot 103 to the customer is streamlined.

FIG. 4 shows a configuration of an information processing system according to an embodiment of the present invention. The information processing system includes a center system (core system) 200, mobile terminals (mobile phone 211, smartphone 214, tablet terminal 215) carried by a carrier and a delivery person, and a personal computer (PC) operated by a delivery manager or the like. ) 221 is connected via the network 230.

Further, a car navigation system 212, a printer 213, or the like capable of communicating with a short-range wireless communication technology (for example, Bluetooth (registered trademark)) can be connected to the mobile phone 211. The mobile terminal can be provided with a bar code and a two-dimensional code reading function. The car navigation system 212 has a delivery address data (postal code, address, latitude / longitude, etc. of a customer's house registered in advance) included in the delivery data (delivery slip) delivered from the center system 200 via the mobile phone 211. It can receive (including GPS information) and show its address on the map displayed on the display.

The center system 200 includes a delivery system 201 that mainly manages the delivery of gas containers, a meter reading / billing system 202 that performs billing operations from the meter pointer of a gas meter installed in the customer's house, and a gas container and gas meter installed in the customer's house. Includes a security system 203 that manages the security status of such equipment.

The delivery system 201 determines the next scheduled delivery date of the gas container for each customer based on the past record of gas usage and the like. In the area in charge of the delivery staff, the number of gas containers of the customer whose next scheduled delivery date is the next day is accumulated, and the delivery data (delivery slip) for each delivery staff on the next day is generated for each delivery staff. Next, the delivery system 201 is based on the data of the customer's house whose next scheduled delivery date is the next day and the data of the type and number of gas containers left to be delivered at each depot 103, and the next day for each depot 103. Generate depot delivery data. Furthermore, since the delivery staff is assigned to the delivery staff who actually work based on the delivery data, rank, holidays, and other delivery data of the delivery staff in the past, it is possible to efficiently allocate the delivery staff.

In addition, the delivery system 201 transmits depot delivery data and delivery data for each delivery member to the mobile terminal at a predetermined time, periodically or in response to access from each carrier and delivery member's mobile terminal. To do. On the other hand, work data indicating that the carrier actually delivered the product to the depot and work data of the customer's house actually delivered by the delivery staff are collected from the mobile terminal and stored in the database in the delivery system 201. ..

Furthermore, among the delivery data by delivery person downloaded to the mobile terminal, the address data of the delivery destination is transmitted to the car navigation system 120, the location of the customer's house scheduled to be delivered on the day is displayed on the map, and the delivery person's delivery is performed. Assist.

(How to operate the depot)
FIG. 5 shows a method of creating depot delivery data in the delivery system according to the embodiment of the present invention. The database in the delivery system 201 contains the customer's home data (for example, customer's personal information, installed gas container, gas meter equipment information, past gas usage record, past) included in the delivery area of each depot. (Delivery record, etc.) is stored. In addition, the delivery member data including the past delivery data for each delivery member, the rank of the delivery member, the holiday, and the like are stored in the database.

In step S402, the delivery system 201 collects the meter pointer acquired by the monthly meter reading by the meter reader or the meter pointer acquired irregularly by the delivery staff and the security guard via the mobile terminal and the network 230.

In step S404, the gas usage amount during a certain period is calculated for each customer based on the past gas usage record, the past delivery record, and the like.

In step S406, the remaining amount of LP gas in the gas container is predicted based on the amount of gas used, and the next scheduled delivery date of the gas container is determined for each customer.

In step S408, in the area in charge of the delivery staff, the number of gas containers of the customer whose next scheduled delivery date is the next day is integrated, and the delivery data (delivery slip) for each delivery staff on the next day is generated for each delivery staff.

If the database is updated, such as when a new meter pointer is input in step S410, the calculation is repeated from step S402. In this way, every time the meter pointer is input by the meter reader, the delivery staff, or the security guard, the gas usage amount is recalculated, so that the next scheduled delivery date can be calculated more accurately. This makes it possible to reduce the possibility of running out of gas at the customer's home. In addition, since the accuracy of forecasting the scheduled delivery date is improved, the delivery efficiency can be significantly improved.

As an example, the database is updated every day at 19:00, and the delivery data for each delivery person on the next day is updated each time. The estimated delivery date of the next gas container for each customer included in the delivery area provided in the depot is determined, and the delivery data for each delivery member in charge of the delivery area provided in the depot is aggregated for delivery. System 201 can create depot delivery data. For example, as shown in Table 1, the number of filling containers that must be delivered to the depot each day for the week following the next day is totaled.

The delivery system 201 updates the database by receiving work data including the number of gas containers delivered on the day before the scheduled delivery date from the mobile terminal of the delivery staff in charge of the delivery area provided in the depot at any time (step). S412). In step S414, the number of stocks for each depot as of 19:00 is calculated every day from the number of stocks on the previous day and the number of deliveries on the current day. Further, in step S416, the delivery data for each delivery member including the number of gas containers delivered by the delivery member on the scheduled delivery date is aggregated, the planned delivery number delivered from the depot on the day before the scheduled delivery date is calculated, and the inventory is calculated. The number of gas containers to be delivered to the depot by the morning of the scheduled delivery date is calculated by subtracting the number of gas containers.

FIG. 6 shows the arrangement of the trailer on the 16th of the first depot. The first depot has four lanes as an example. FIG. 6A shows a state in which the trailer B is arranged in the lane 2 at night on the 15th to 16th based on the number of stocks as of 19:00 on the 15th of the previous day and the depot delivery data on the 16th. FIG. 6B shows the arrangement as of 19:00 on the 16th after the delivery of the gas container to the customer was completed by the delivery staff in charge of the delivery area provided in the first depot. All the filling containers loaded on the trailer A in lane 1 are delivered to the customer's house, and instead, the residual gas container replaced at the customer's house is loaded. A part of the filling container loaded on the trailer B of the lane 2 carried in at night is also delivered to the customer's house and replaced with the residual gas container.

FIG. 7 shows the arrangement of the trailer on the 17th of the first depot. FIG. 7A shows a state in which the trailer C is placed in lane 3 at night on the 16th to 17th based on the inventory as of 19:00 on the 16th (FIG. 6B) and the depot delivery data on the 17th. Shown. The tractor that has towed the trailer C is towing the trailer A in lane 1 and returning to the hub base. As shown in FIG. 7A, the planned delivery number of the depot delivery data on the 17th and the load number of the trailer C are different. The number of trailers to be carried in at night and the number of gas containers to be loaded are determined in consideration of the number of gas containers that can be loaded on the trailer, the number of gas containers to be kept in stock at the depot, and the number of deliveries on the day.

For example, if it is September and the gas consumption is low, one trailer will be brought in. In December, when the planned delivery number of 50 kg cylinders on the next day = 300, the same number of trailers as trailer C will be carried into lane 4. That is, 374 50 kg cylinders are brought in, and in addition to the increased planned delivery number, the number of depot inventories is increased. FIG. 7B shows the arrangement as of 19:00 on the 17th after the delivery of the gas container to the customer is completed, and all the filling containers loaded on the trailer B in lane 2 are replaced with the residual gas container. There is.

FIG. 8 shows the arrangement of the trailer on the 18th of the first depot. FIG. 8A shows a state in which the trailer D is placed in the lane 4 at night on the 17th-18th based on the inventory as of 19:00 on the 17th (FIG. 7B) and the depot delivery data on the 18th. There is. The tractor that has towed the trailer D is towing the trailer B in lane 2 and returning to the hub base. In this way, by the morning of the scheduled delivery date, the delivery is completed the day before, the replaced residual gas container is collected, and the filling container scheduled to be delivered on the same day is replenished. Since the carrier who operates the tractor can replace the gas container at the depot simply by replacing the trailer, the work load can be reduced and the operating cost can be significantly reduced.

FIG. 8B shows the arrangement of the gas container as of 19:00 on the 17th after the delivery of the gas container to the customer is completed. In this way, by using the plurality of lanes to carry the trailer loaded with the filling container into the empty lane and carry out the trailer replaced with the residual gas container, the depot can secure the desired inventory. , Can deliver gas containers that need to be delivered to customers. As a guideline for the number of lanes to be installed in the depot, add 1 to 2 to the number of trailers that carry the number of gas containers to be delivered to the delivery area provided in the depot for one day during the busy season. deep. Due to the workability of trailer replacement, lanes should be provided twice as many as the number of trailers to be loaded per day, or in areas where the amount of gas used fluctuates greatly, several lanes should be secured in order to secure a large number of stocks. It is also possible to secure an extra.

As described above, since the delivery system 201 collects work data from the delivery staff from the mobile terminal, it is possible to accurately grasp the inventory quantity of the depot. As shown in FIG. 1, since the functions of the filling station are integrated in the hub base 102 and the depot 103 as a container storage is arranged in a wide area, it is important to accurately manage the inventory in the depot 103. According to the present embodiment, by constructing a gas delivery system in which the delivery system 201 and the mobile terminal are linked, the delivery status of the gas container can be grasped in real time, and the delivery efficiency of the gas container can be improved. it can.

FIG. 9 shows the arrangement of gas containers to be loaded on the trailer. As described above, only small gas containers (20 kg cylinders and 30 kg cylinders) can be loaded on the upper 152 of the trailer, and a total of 64 containers can be loaded in 8 rows with 8 cylinders in a row. A large gas container (50 kg cylinder) can be loaded on the lower 151 of the trailer in 24 rows with 7 in a row, for a total of 168 (FIG. 9 (a)). In addition, the number of small gas containers and the upper tier may not be enough for the planned delivery, and the lower tier may also be loaded.

For example, as shown in FIG. 9B, assuming that small gas containers are loaded in a row of 8 in 7 rows, up to a total of 56, a combination of the number of large gas containers and the number of small gas containers loaded can be combined. Determine in advance. For each gas container, from the combinations shown in FIG. 9B, to the depot so that the gas container that needs to be delivered to the customer can be delivered while securing the desired inventory in the depot. Determine the optimum combination of the number of pieces to be carried in.

101 Primary base 102 Hub base 103 Depot 104 Tank truck 105a Trailer 105b Tractor 131 Roof 132 Rest room 133 Fence, gate

In one embodiment of the present invention, in order to achieve such an object, a hub base for filling a gas container with gas carried in from a primary base and a gas container for delivering gas from the hub base to a customer's house in a delivery area. A depot that uses a trailer for transporting a gas container between the hub base and the depot as a gas container storage place, and a mobile terminal of a delivery person who delivers the gas container via a network. A method of delivering a gas container in a gas delivery system including a connected delivery system, wherein a plurality of lanes for storing the trailer are provided in the depot, and the gas container is filled by the morning of the scheduled delivery date. In the process of bringing the first trailer loaded with the gas into the vacant first lane and in the second trailer placed in the second lane different from the first lane from the day before the scheduled delivery date. there are, the second trailer has been replaced with the used gas container, and a step of tractor towing the first trailer unloaded, while using a plurality of lanes to ensure the desired inventory, A delivery person in charge of a delivery area provided in the depot is characterized in that a gas container to be delivered to a customer's house on the scheduled delivery date is delivered.

Claims (3)

It is a depot that stores a hub base that fills a gas container with gas carried in from a primary base and a gas container that is delivered from the hub base to a customer's house in a delivery area, and gas between the hub base and the depot. A method of delivering a gas container in a gas delivery system including a depot in which a trailer for transporting the container is used as a gas container storage place and a delivery system connected to a mobile terminal of a delivery person who delivers the gas container via a network. There,
At the depot, a plurality of lanes for storing the trailer are provided, and a trailer loaded with filled gas containers is carried into an empty lane and replaced with a used gas container by the morning of the scheduled delivery date. The gas container to be delivered to the customer's house on the scheduled delivery date by the delivery staff in charge of the delivery area provided in the depot is carried in while securing the desired inventory. Method. The delivery system receives work data including the number of delivered gas containers from the mobile terminal of the delivery person in charge of the delivery area provided in the depot, and receives work data.
The delivery data by the first delivery person including the number of gas containers delivered by the delivery person on the day before the scheduled delivery date and the work data are aggregated for all the delivery persons in charge of the delivery area of the depot. Calculate the number of stocks left undelivered the day before at the depot,
The delivery data by the second delivery person including the number of gas containers delivered by the delivery person on the scheduled delivery date is aggregated for all the delivery persons in charge of the delivery area of the depot, and the number of inventories is subtracted. The method according to claim 1, wherein the number of gas containers to be delivered to the depot is calculated by the morning of the scheduled delivery date. A depot that stores a hub base that fills a gas container with gas carried in from a primary base and a gas container that delivers gas from the hub base to a customer's house in a delivery area, and gas between the hub base and the depot. A gas delivery system including a depot in which a trailer for transporting containers is used as a gas container storage place, and a delivery system connected to a mobile terminal of a delivery person who delivers the gas container via a network.
The delivery system
A means for receiving work data including the number of delivered gas containers from the mobile terminal of the delivery person in charge of the delivery area provided in the depot, and
The delivery data by the first delivery person including the number of gas containers to be delivered by the delivery person on the day before the scheduled delivery date and the work data are aggregated for all the delivery persons in charge of the delivery area of the depot. A means to calculate the number of stocks left undelivered the day before at the depot,
The delivery data by the second delivery person including the number of gas containers delivered by the delivery person on the scheduled delivery date is aggregated for all the delivery persons in charge of the delivery area of the depot, and the number of inventories is subtracted. Including a means for calculating the number of gas containers to be delivered to the depot by the morning of the scheduled delivery date.
At the depot, a plurality of lanes for storing the trailer were provided, and by the morning of the scheduled delivery date, the trailer loaded with the filled gas container was carried into an empty lane and replaced with a used gas container. By carrying out the trailer, the gas container to be delivered to the customer's house on the scheduled delivery date is carried in by the delivery staff in charge of the delivery area provided in the depot while securing the desired inventory. Gas delivery system.

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