JP2002215689A - Truck load computing system and truck load computing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily compute weight applied to an axle of a truck. SOLUTION: The data of a chassis type, deck dimensions and layout, the data of optional items, the data of under-subframe weight and the data of loadage of a load are simply inputted to compute weight on each of the chassis, occupant, load, deck, under-subframe and options, and each axle load on the basis of the inputted data, and previously stored weight data including weight data for every chassis type and weight data for every item (114, 112, 113). Gross vehicle weight, total front wheel load and total rear wheel load are automatically computed from the computed values (132). Specifications including information on the gross vehicle weight and the total load of each axle are outputted (134).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chassis, a loading platform (so-called vessel) on which a load is placed, and an intermediate body (so-called subframe or subbottom) disposed between the chassis and the loading platform. Includes tilt mechanism)
The invention also relates to a truck load calculation system and a truck load calculation method for calculating a total axle load applied to front and rear axles of a truck including accessories (so-called options).

[0002]

2. Description of the Related Art Conventionally, there is a legal upper limit for the total weight of a vehicle traveling on the road with luggage loaded thereon, but in addition to this, a load applied to each axle of a front wheel and a rear wheel. The maximum allowable value is also set by the manufacturer.

[0003] The ratio of the load applied to each of the front and rear axles varies according to the user's requirements such as the chassis type, the dimensions of the platform, the position of the platform, and the like. It is necessary to properly judge whether the load applied to each axle meets the legal limit.

[0004]

However, in order to make this determination, for each member, for example, the member weight and the distance between the center of gravity of the member and the rear wheel axle are determined from the dimensions, plate thickness, material, etc., and from these, It is necessary to calculate the total moment applied to each axle, and finally to calculate the load applied to each axle, which is a very complicated process to perform manually.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a truck load calculating system and method capable of easily calculating a load applied to each axle of a truck.

[0006]

In order to solve the above-mentioned problems, a truck load calculating system according to the present invention comprises a chassis, a loading platform on which a load is placed, and an intermediate body disposed between the chassis and the loading platform. A truck load calculating system for calculating the total axle load applied to each of the front and rear axles of the truck, including the accessories, wherein the weight of the chassis associated with a predetermined chassis type and the weight of the chassis are used. A weight data storage unit in which weight storage data including each axle load is stored, a model of a chassis for a track to be calculated, a weight of the intermediate body, and intermediate body information for specifying each axle load based on the weight; Cargo information that specifies the weight of the carrier and each axle load based on that weight, accessory information that specifies the weight of each accessory and each axle load that uses that weight, Input means for inputting occupant information specifying the axle load, and input data including the weight of the load and the load information specifying each axle load based on the weight, and input data input by the input means or the input data Setting means for setting, based on the weight storage data stored in the weight data storage unit, the weight of each of the chassis, the intermediate body, the accessory, the carrier, the occupant, and the load, and each axle load based on the weight; and A calculating means for calculating each axle total load from each axle load set by the setting means; and an output means for outputting each axle total load calculated by the calculating means.

Further, a method of calculating a truck load according to the present invention is directed to a method of calculating a truck load including a chassis, a carrier on which a load is placed, an intermediate body disposed between the chassis and the carrier, and accessories. A truck load calculating method for calculating a total axle load applied to each of the front and rear axles, comprising: storing weight of a chassis associated with a predetermined chassis type and weight storage data including each axle load based on the weight; The weight data storage process to be stored in the vehicle, the model of the chassis for the truck to be calculated, the weight of the intermediate body and the intermediate body information that specifies each axle load based on the weight, the weight of the bed and each axle based on the weight Bed information to specify the load, accessory information to specify the weight of the accessory and each axle load by the weight, occupant information to specify the weight of the occupant and each axle load by the weight, and An input step of inputting input data including a load weight and load information specifying each axle load based on the weight, and a chassis based on the input input data or the weight storage data stored in the storage medium, A setting step of setting the weight of each of the intermediate bodywork, the accessories, the loading platform, the occupant, and the load and each axle load based on the weight; and a calculation step of calculating each axle total load from the set axle loads. And an output step of outputting the calculated total load of each axle.

The invention relating to the track load calculation system and the invention relating to the track load calculation method have the same technical idea and the same problem solving means. Will be described.

The above-mentioned track load calculating system has a weight data storage section in which weight storage data is stored.
The weight storage data includes a chassis weight associated with a predetermined chassis type and each axle load based on the weight.

[0010] However, the weight storage data is not limited to these, and the intermediate body information such as the standard weight information of the intermediate body, the standard weight, dimensions, shape, and the calculation formula information of the intermediate body. Information and accessory information such as accessory weight information for each item may be stored in advance as weight storage data.

When the model of the chassis for the track to be calculated is input to the track load calculating system having such a weight data storage unit via the input unit, the setting unit sets the input model of the chassis to the input model of the chassis. Read the associated chassis weight and each axle load from the weight data storage unit,
The read chassis weight is set as the chassis weight, and each read axle load is set as each axle load.

[0012] The setting means may be provided for each of the chassis, the intermediate body, the accessory, the carrier, the occupant, and the load based on the input data input or the weight storage data stored in the weight data storage unit. The weight and each axle load based on the weight are set.

Of the chassis weights, the chassis weights corresponding to the input chassis type and the respective axle loads based on the weights are read out from the weight data storage unit, and the read-out chassis weights and the respective axle loads are respectively referred to as the chassis weights. It can be set as axle load.

The weight of the loading platform is determined by a predetermined rule (for example, a procedure for calculating the weight based on the dimensions determined for each shape of the loading platform) based on the loading platform information (for example, information such as the inner size, plate thickness, shape type, and material of the loading platform). Can be set according to the following formula.
The same applies to the weight of the intermediate body and accessories.

Further, the weight of the load is determined by a predetermined rule (for example, the maximum load capacity × specific gravity × the load capacity based on the load method) based on the load information (eg, the load method, load type / specific gravity, desired load amount, etc.). Occupancy rate, etc.).

The occupant weight can be set to a weight obtained by multiplying the inputted occupant capacity by a prescribed weight value (55 kg or the like). The occupant weight can be input without inputting the occupant capacity. The riding capacity is determined according to the model of the chassis that has been set, and the prescribed weight value (such as 55 kg) is determined for the determined riding capacity.
Can be set as the occupant weight.

[0017] Further, the loading platform excluding the chassis, an intermediate body,
Each of the front and rear axle loads of the accessory, the occupant, and the load can be set by the following formula based on the weight, the object offset, and the wheelbase. The object offset is positive in front of the rear axis center.

Front wheel axle load = weight × object offset ÷
Wheelbase Rear wheel axle load = weight-front wheel axle load Then, the calculating means calculates each set axle load by the front wheel,
The total load of each rear wheel is calculated to calculate the total load of each axle, and the output means outputs the calculated total load of each axle.
As a result, the total load of each axle of the front wheel and the rear wheel of the truck to be calculated can be recognized from the output result, and the design of the truck can be facilitated.

The weight storage data includes the actually measured weight of the chassis obtained by the actual measurement and the actually measured axle loads, and the output means outputs, by a predetermined operation, the measured weight and the measured weight of the same model as the inputted model of the chassis. Output each measured axle load,
Preferably, the setting means is configured to set the input measured weight and each measured axle load as the weight of the chassis and each axle load.

In this case, the measured weight of the chassis and the measured axle loads are stored in advance, and the output means calculates the measured weight and the measured axle loads of the same model as the inputted model by a predetermined operation. Output. Here, the measured weight and the measured axle load are not limited to one set, but a plurality of sets of data measured a plurality of times in the past may be stored, and these sets of data may be output. Then, when the operator inputs the measured weight and the measured axle load that are determined to be the closest from the current target truck, the setting means converts the input measured weight and the measured axle load to the chassis. And the weight of each axle. As a result, the chassis weight and each axle load should be set as the chassis weight and each axle load based on not only the standard values but also past measured data and the most appropriate data from the current target truck. Can be.

Further, the present truck load calculation system can be applied to a truck having a single front wheel and a dual rear wheel. In this case, the setting means determines the load center position of the two rear wheels. Based on the object offset, which is the distance between the position of the object and the center of gravity of the object, the weight of the wheelbase and the object,
It is desirable to configure to set each axle load. That is, the setting means uses the above equation by replacing “interval” in the above equation with “the object offset which is the interval between the load center position of the two rear wheels and the center of gravity of the object”. Each axle load can be set. This makes it possible to easily calculate each axle load even for a truck in which the front wheels have a single shaft and the rear wheels have two shafts.

In a truck in which the front wheels have a single axle and the rear wheels have two axles, the load load on the front axle of the single axle poses a problem. In this case, the calculated front wheel axle is used in the truck load calculation system. Judgment means for judging whether or not the total load is equal to or more than the allowable front wheel tire load determined according to the tire size of the input chassis type, and warning when the total front wheel load is equal to or more than the allowable front wheel tire load. It is desirable to further provide warning means.

In this case, when the determining means determines that the calculated front wheel axle total load is equal to or more than the allowable front wheel tire load determined according to the tire size for the type of chassis, a warning is issued by the warning means. Thus, it is possible to reliably recognize that the load applied to the front wheels has become excessive, and to facilitate the design of the truck.

When the front wheel axle total load exceeds the front wheel tire allowable load as described above, the front wheel tire allowable load is increased by modifying the tire size, or the intermediate vehicle body, accessories, A countermeasure for reducing the front wheel axle total load by correcting the object offset for at least one of the above is conceivable.

Here, if a correction value of the tire size is inputted, the judging means may make a judgment again based on the inputted correction value. It is possible to increase the tire allowable load and take a countermeasure for avoiding an excessive load load state on the front wheel side.

When a correction value of the object offset for at least one of the intermediate body, the accessory, and the bed is input, the setting means re-sets each axle load based on the input correction value. With this configuration, it is possible to reduce the total load of the front wheel axle by correcting the object offset, and to take a countermeasure for avoiding an excessive load load on the front wheels.

The calculating means calculates the total weight of the vehicle from the set chassis weight, the weight of the intermediate body, the weight of the carrier, the weight of the accessories, the weight of the occupant, and the weight of the load, and the output means calculates the total weight of the vehicle. It is desirable to output a specification containing information on the total weight and the total load of each axle,
In this case, it is possible to automatically obtain a specification including information on the gross vehicle weight and each axle gross load, thereby facilitating and facilitating the truck design work.

The specifications include not only information on the total weight of the vehicle and the total load of each axle, but also the weight and each axle load of each of the chassis, the intermediate body, the carrier, the accessories, the occupants, and the load. Information may also be included.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a track load calculating system and a track load calculating method according to the present invention will be described below.

As shown in FIG. 1, a truck load calculating system 10 includes a processing unit 12 constituted by a microcomputer or the like, a keyboard 16 for an operator to input data such as a model of a chassis, an input screen and processing. A display 14 for displaying results and the like, a mouse 24 for selecting desired information and operating buttons on an input screen, a printer 18 for printing out processing results and the like, a weight database (weight DB) 22 to be described later, and the like. And a non-volatile storage device 20 storing the same.

Next, a track to be calculated by the track load calculating system 10 will be described. FIG.
As shown in (a) to (c), the track 30 to be calculated has a single-axle front-wheel configuration and a 2-axle rear-wheel configuration. Two tires are mounted on the front wheel and four tires are mounted on the rear wheel. Truck 30
Broadly speaking, a loading platform (so-called vessel) 3 for loading
2, an intermediate body (hereinafter, also referred to as a sub-frame lower and a sub-lower) including a chassis 36 and a tilting mechanism for tilting the carrier 32 and disposed between the chassis 36 and the vessel 32;
4 and four types of components (not shown) such as a professional ladder and an accessory (optional) such as a seat stopper.

In the initial state, the weight DB 22 storing the weight data relating to the truck 30 having the above-described structure is associated with the model of the chassis 36 as shown in FIG. Weight DB2 that stores data such as front wheel load, rear wheel load, front wheel tire type and allowable load, rear wheel tire type and allowable load, etc.
2A and an option weight DB 22B in which various optional weight data are stored in association with optional items as shown in FIG. 3B. When data such as the measured weight, the measured front wheel load, and the measured rear wheel load of the chassis 36 are input after the operation of the truck load calculation system 10, the measured data is accumulated in the weight DB 22. That is, as shown in FIG. 4, data such as the measured chassis weight, the measured front wheel load, the measured rear wheel load, the model of the front wheel tire used at that time, and the model of the rear wheel tire are associated with the model of the chassis 36 to obtain the chassis weight. It is accumulated in the weight DB 22 as the performance database 22C.

Next, an input screen of the truck load calculating system will be described. By a predetermined operation, an input screen 50 (FIG. 5) for inputting data necessary for calculating the weight and each axle load related to the truck is displayed on the display 14.

The input screen 50 shown in FIG.
Basic data required to calculate each axle load (chassis model, intermediate body model, bed method, load type and specific gravity,
The basic data input unit 52 for inputting dump angle, desired load capacity, loading platform shape and information on each main plate, and a loading plan input screen (FIG. 12) for inputting loading planning data such as loading position information of the loading platform. INPUT button 90 to be called, bodywork data section 92 in which data input from the bodywork plan input screen is displayed and its correction value can be entered, standard shipping weight of chassis 36 and its actual data, tire information, front wheel axle load ,
Chassis data section 93 for displaying and inputting information such as rear wheel axle load, loading section data section 94 for displaying and inputting information such as the type of loading platform 32, and information such as weight and object offset of sub bottom 34. The sub-lower data section 95 for displaying and inputting, and the selection and weight of options to be equipped,
An optional data section 96 for displaying and inputting information such as each axle load and object offset is provided.

Hereinafter, as the operation of the present embodiment, the contents of the load calculation processing according to the track load calculation system and method will be described.

By performing a predetermined operation from the keyboard 16, an input screen 50 shown in FIG. An operator inputs a chassis type, an intermediate body type (indicated as a link type in FIG. 5), a loading platform method, a type and specific gravity of a load, a dump angle, a desired load, When basic data such as the bed shape and information on each main plate is input and the save button 51 is designated with the mouse 24, the processing routine in FIG.

First, in step 100 of FIG. 9, input waiting of bodywork plan data such as loading position information of a loading platform is performed. This bodywork plan data is necessary information for calculating the distance (offset) between the position of the center of gravity and the load center position of the rear axle 2 for the carrier, load, occupant, option, etc.
This is the data to be input next to the basic data. Accordingly, the operator designates the INPUT button 90 to display the bodywork plan input screen (FIG. 12), and on this screen, the inner method (length direction), the inner method (width direction), and the inner method (height direction) are displayed. ) And input an OK button 98, the input screen 50 (the body planning data is displayed in the body data part 92).
And the process proceeds to step 102 in FIG.

At step 102 in FIG. 9, it is determined whether or not a maker and a chassis model have been newly input. Step 11
In step 4, each information of the standard shipping chassis weight, front wheel load, rear wheel load, model and allowable load of each front and rear tire corresponding to the target model is read from the chassis weight DB 22A (see FIG. 3A). In step 114, the number of passengers is determined based on the chassis type, the occupant weight is calculated based on 55 kg per person, and the weight information, the object offset and the wheel base defined in the chassis mounting data provided by the manufacturer (in the case of this embodiment, Then, the front wheel load and the rear wheel load based on the occupant weight are calculated by substituting the distance between the rear wheel biaxial load center position and the front wheel position (the same applies hereinafter) into the following equation. Front wheel load = weight × object offset ÷ wheel base (1) rear wheel load = weight−front wheel load (2) In the next step 116, the chassis weight, front wheel load, Information such as the rear wheel load, the model and allowable load of each front and rear wheel tire, and the like are displayed on the standard shipping weight display section 54, the tire display section 60, and the chassis specification data display section 62 of the screen 50. Here, when the operator who wants to refer to the result data after confirming the chassis weight, the front wheel load, and the rear wheel load at the time of standard shipment designates the result data reference button 56 with the mouse 24, the process proceeds to step 120. FIG.
The actual data (chassis weight, front wheel load, rear wheel load obtained by actual measurement) corresponding to the chassis model is read from the chassis weight actual database 22C, and an actual data list (not shown) is displayed. Thus, an operator who wants to refer to the result data can check the past result data.

If data is selected from the displayed actual data, the process proceeds to step 124, where the selected data is fetched, and the data is displayed on the actual data display unit 5.
7 is displayed. In step 122, the data input button 64 shown in FIG. 5 is designated, and an affirmative determination is made also when new data different from the display data of the chassis data is input on an input screen (not shown).
Is executed.

At step 104 in FIG. 9, it is determined whether or not the bed data has been newly input. At first, an affirmative determination is made, and the routine proceeds to step 112. In step 112, the weight of the load is calculated from the method in the bed, the type and specific gravity of the load, and the desired load amount (maximum, etc.) input from the basic data input unit 52, and the weight balance is checked based on the installation plan data. The platform offset is determined, and each axle load based on the loaded weight is calculated from the above equations (1) and (2). In the next step 113,
For example, the platform weight and each axle load are calculated as follows.

The loading platform is composed of four components, a floor portion, a horizontal fan, a rear fan, and a torii (protector). The weight of each component is calculated, and the weight of the platform is calculated as the sum of the weights of the components. calculate.

The floor portion includes a floor plate (floor plate), a vertical joist (main frame), and a horizontal joist (bolster,
Outriggers), the weight of each part is calculated by substituting the value input from the basic data input unit 52 into a calculation formula predetermined for each part, and the total weight of each part is calculated. The floor weight is calculated.

For example, regarding the weight of the floor plate (floor plate) (assuming that the material is iron) in a certain type of floor structure, the L (vehicle travel) of the inner method input from the bed size input screen of FIG. Using the length of the bed along the direction), W (width of the bed), the thickness t1 of the floor and the specific gravity ST of the iron, when the thickness t1 of the floor is less than 5 mm, L × (W + 230−
t1 × 4) × t1 × ST When the thickness t1 of the floor is 5 mm or more, L × (W + 160)
It is calculated from each of the formulas of × t1 × ST.

The weight of the vertical joist (main frame) is calculated from a calculation formula of 377 × (L-10) × 5.5 × ST × 2.

The weight of each part is calculated in this way, and the floor part weight is calculated as the sum of the weights of each part.

Similarly, for the horizontal tilt, the rear tilt, and the torii (protector), the values input from the loading dimension input screen in FIG. The weights of the parts are calculated, and the horizontal weight, the rear weight, and the torii (protector) weight are calculated as the sum of the weights of the parts. Then, the loading platform weight is calculated as the sum of the weights of the four components.

On the other hand, the object offset is obtained by calculating the distance between the center position of each component and the center position of the rear biaxial load on the basis of the bodywork planning data, and the above formulas (1) and (2) are obtained. The axle load based on the weight of each component is calculated by applying the weight of each component, the object offset, the wheelbase, and the like. Then, as the sum of the calculated axle loads,
Each axle load based on the bed weight is calculated.

In step 106 of FIG. 9, it is determined whether or not sub-lower data has been newly input. At first, an affirmative determination is made, and the routine proceeds to step 113, where the sub-lower weight and each axle load are calculated as follows. I do. That is, in the case of the GVW 20, the sub-sub weight is 1100 kg and the object offset is 100
0 mm and each axle load is calculated from the above equations (1) and (2). In other cases, the detailed setting screen of FIG. 6 is displayed by operating the button 74, and a screen for calculating the weight and the object offset for each of the sub-lower components (the dump link mechanism, the dump hinge, the sub frame, etc.) is displayed. You.

For example, in the case of the component A, as shown in FIG. 6, the weights of the components and the oil constituting the component A are displayed in a column 82, and the operator operates the sub-lower calculation jig (not shown). Is used to determine the object offset (GL) of each component, and input to the column 84. As a result, (weight × object offset) is calculated for each part and displayed in the column 86. Further, (total of (weight × object offset) ÷ total of weight) is calculated. Is displayed in the total column 84S as the target object offset. In FIG. 6, the total of (weight × object offset) is 73043.
By dividing 7.4 by the total weight 388.195, 1881.625 is obtained as the object offset of the entire component A.

After calculating the weight and the object offset for each of the sub-sub-components in this way, the same procedure as described above is performed for each component to obtain the weight of the entire sub-sub and the object offset. Each axle load is calculated by applying these and the wheelbase to equations (1) and (2).

In step 108 of FIG. 9, it is determined whether or not an option item has been newly selected in the selection field 76 of the option data section 96. At first, an affirmative determination is made, and the flow advances to step 113 to select the selected option. The weight data corresponding to the item is stored in the option weight DB 22 shown in FIG.
B, and automatically calculates the object offset of each option by calculating the interval between the center position of each option and the center position of the rear wheel biaxial load based on the bodywork planning data (bodywork data section 92 in FIG. 5). The weight of each option, the object offset, the wheelbase, etc. are applied to the above equations (1) and (2) to calculate each axle load based on the weight of each option. Further, each axle load based on the weight of the entire option is calculated as the sum of each axle load for each option. Front wheel axle load for each optional item,
The rear wheel axle load and weight are displayed in a display field 78, the object offset for each option item is displayed in a display field 80, and the front wheel axle load, rear wheel axle load and weight of the entire option are displayed in a display field 78S.
In addition, the object offset of the entire option is displayed in the display column 80S.
Are displayed respectively.

As described above, the weight of each of the chassis, the bed, the sub-sub, the option, the occupant, and the load, and the axle load based on the weight are calculated.

If the operator determines that the calculated data or the like has a problem, the data is re-input from the input screen 50 and the re-save button 53 is operated.
By this operation, the data re-input in steps 102 to 108 is determined, and the weight and each axle load are recalculated based on the re-input data.

When the final save button 55 is operated, an affirmative determination is made in step 110, and the flow advances to step 126 to check whether all the required items have been input. If there are any remaining items that have not been entered, a warning message is displayed in step 128 to the effect that there are remaining items that have not been entered. The display of the warning message allows the operator to recognize that there is a required item that has not been input, and can immediately proceed to input information on the relevant item. In addition, it is possible to prevent the inconvenience that the determination process described later is executed in an incomplete state in which there is an uninputted item and a bodywork plan / specification described later is output.

If all the essential items have been entered in step 126, the process proceeds to step 130, where the subroutine of the determination process in FIG. 10 is executed. In this determination process, first, the total load on the front wheels is calculated by summing the loads on the front wheels (step 152 in FIG. 10), and it is determined whether the calculated total load on the front wheels is less than the allowable load on the front wheels (step 154). If the total load of the front wheels is less than the allowable load of the front wheels, there is no problem.
Return immediately to the main routine.

On the other hand, if the total load of the front wheels is equal to or more than the allowable load of the front wheels, it can be determined that the front wheel loads are excessive. Therefore, a warning message indicating that the front wheel loads are excessive is displayed on the display 14.
(Step 156). At this time, as a measure for improving the front wheel total load to be less than the front wheel allowable load, a measure for increasing the tire size to increase the front wheel allowable load and a method for changing the platform offset to reduce the front wheel total load are set. There is a strategy.

Here, if the tire size is corrected to a large size on the input screen 50 (Yes at step 158),
The determination in step 154 is performed again using the allowable load according to the corrected tire size. On the other hand, after the warning, the input screen 5
0 or when the loading platform offset is changed on the screen of FIG.
Equations (1) and (2) based on the platform offset after change
The total front wheel load is calculated (step 152), and the determination in step 154 is performed again.

In this manner, the adjustment is performed until the total load of the front wheels becomes less than the allowable load of the front wheels. When the total load of the front wheels becomes less than the allowable load of the front wheels, the process returns to the main routine, and FIG.
To step 132.

In step 132, if necessary, the weight, front wheel axle load, and rear wheel axle load are calculated for the necessary items among the chassis, the occupant, the load, the carrier, the sub-lower, and the option by using the carrier offset corrected in the determination processing. Recalculate and sum the weight, front wheel axle load, and rear wheel axle load for each of these chassis, occupants, load, carrier, sub-sub, and option to obtain the total vehicle weight, total front wheel load, and total rear wheel load. Is calculated.

In the next step 134, the specification 2 shown in FIG. 8 including information on the calculated gross vehicle weight and each axle gross load is included.
10, bodywork plan 200 in FIG. 7, estimate specification 2 in FIG.
20, the difference list 230 in FIG. 14, and the quality document distribution table 240 in FIG. Here, first, the specification 210 and the bodywork plan 2 are displayed on the display 14 according to the selection.
00, etc., the desired document content is displayed, and then, by performing a predetermined operation from the keyboard 16, the document content can be printed out from the printer 18.

Hereinafter, each document will be outlined. FIG. 8 shows an example of main items described in the specification 210. For example, information on car name, model, and tire size as data related to bodywork chassis, and information on various masses including dimensions such as full length, full width, dimensions of loading platform, and maximum loading capacity as data of main specifications,
Information on the structure, shape, and thickness of the cargo bed
Information on the items of accessories (safety columns, dump alarms, etc.) to be loaded on the truck as data on the accessories is posted in the specification 210.

FIG. 7 shows an example of the bodywork plan 200. For example, in the upper section 200A, bibliographic items such as a chassis maker name and a chassis type are posted, and in the middle section 200B, bodywork planning data is posted together with a truck diagram,
The lower section 200C includes a chassis, a bed, options, occupants,
Data such as front wheel axle load, rear wheel axle load, and weight, and front wheel total load, rear wheel total load, and vehicle gross weight (gross mass) for each of the loaded items are posted.

In the estimation specification 220 of FIG. 13, the calculated data calculated for the chassis weight, the sub-sub weight, the bed weight, and the like are stored in the weight column 220B, and the corresponding standard weight data is stored in the standard weight column 220A. , The difference between the standard weight data and the calculated data is listed in the weight difference column 220C, and is used to verify the calculated data.

Further, in the difference list 230 of FIG. 14, customer requirements and specifications (submission specifications) obtained by the design for each of the major design items such as the chassis type, the bed size, and the load capacity are arranged. It is posted and used to verify the specifications of each item.

The quality document distribution table 240 shown in FIG. 15 includes distribution destinations for quality-related documents (quality documents) such as a bodywork plan, a three-sided external view, an estimate specification, a specification, and a difference list. Information such as the number of distributions is posted in a table format, and is used for managing distribution of quality documents.

By printing out such specifications and bodywork plans as needed, it is possible to contribute to the convenience of checking the truck load, etc., and to facilitate and improve the efficiency of truck design and management work. be able to.

As described above, according to the truck load calculating system 10, the total vehicle weight, the total front wheel load, the total rear wheel load, and the like of the calculation target truck are automatically calculated, and the truck weight and each axle load are calculated. Confirmation can be performed quickly. If the total load of the front wheels is equal to or more than the allowable load of the front wheels (that is, the total load of the front wheels is excessive) by the subroutine of the determination process in FIG. And smoothing can be achieved.

In step 130 of FIG. 9, the following determination processing (FIG. 11) for optimizing the overall length of the track and the distance between the cab vessels may be performed. That is, in the determination process of FIG. 11, first, the total length of the truck determined according to the arrangement position of the carrier and the chassis model (see FIG. 7)
And the distance between the cab vessels (350 mm in FIG. 7) are calculated based on the installation plan data and the like, and it is determined whether or not these values conform to the regulations or the allowable dimensions. If one is non-conforming, a warning message indicating non-conforming (for example, "The distance between cab vessels is 30 m
m exceeds the legal size ") Display 1
4 is displayed to prompt the change of the carrier offset.

Then, the bodywork data section 92 shown in FIG.
If the bed offset is changed from the bodywork plan data input screen of 2, the total length of the truck and the distance between the cab vessels are recalculated based on the changed bed offset, and whether these values conform to regulations or allowable dimensions Judge again. If so, return to the main routine.

If such determination processing is also performed, the track design can be further optimized and smoothed.

In the above description, the embodiment in which the front wheel is constituted by a single axis and the rear wheel is constituted by two axes is described. However, the target track is not limited to this. The system can also be applied to a truck having a single shaft for both the front and rear wheels. In this case, by adopting the distance between the axle position of the rear wheel and the position of the center of gravity of the object as the value of the bed offset, the front and rear axle loads can be obtained based on the above equations (1) and (2). .

[0072]

As described above, according to the present invention,
The weight on the axle of the truck can be easily calculated, and the design of the truck can be facilitated.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a track load calculation system according to an embodiment.

2A is a diagram in which a target track is projected from above, FIG. 2B is a diagram in which the track is projected from a side,
(C) is a diagram projected from behind.

3A is a diagram illustrating an example of a chassis weight database, and FIG. 3B is a diagram illustrating an example of an accessory weight database.

FIG. 4 is a diagram illustrating an example of an actual chassis weight database;

FIG. 5 is a view showing an input screen for necessary information.

FIG. 6 is a diagram for explaining calculation of an object offset of each component below the sub.

FIG. 7 is a diagram showing an example of a bodywork plan to be output.

FIG. 8 is a diagram illustrating an example of a specification sheet to be output.

FIG. 9 is a flowchart showing processing contents of a truck load calculation system.

FIG. 10 is a flowchart showing processing contents of a determination processing relating to a front wheel total load.

FIG. 11 is a flowchart showing the processing content of a determination process regarding the total length and the distance between cab vessels.

FIG. 12 is a diagram showing a bodywork plan input screen for inputting bodywork plan information such as loading position information of a loading platform;

FIG. 13 is a diagram illustrating an example of an output specification sheet.

FIG. 14 is a diagram illustrating an example of an output difference list.

FIG. 15 is a diagram illustrating an example of a quality document distribution table to be output.

[Explanation of symbols]

10: truck load calculation system, 12: processing unit, 14
... display, 16 ... keyboard, 18 ... printer,
Reference numeral 20: storage device, 22: weight DB, 24: mouse, 30
... Truck, 32 ... Carrier, 34 ... Sub-sub, 36 ... Chassis

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Tokutomi 4120 Akabori, Okura-cho, Oraku-gun, Gunma Prefecture Inside the Express Vehicle Manufacturing Co., Ltd. Inside Kyushu Kogyo Co., Ltd. (72) Inventor Toru Sakaguchi 4120 Akabori, Okura-machi, Oraku-gun, Gunma Prefecture East Kyushu Kogyo Manufacturing Co., Ltd. Manufacturing Co., Ltd. F-term (reference) 5B046 AA04 JA01

Claims (6)

[Claims] An axle total load applied to each axle before and after a truck including a chassis, a loading platform on which a load is placed, an intermediate body disposed between the chassis and the loading platform, and accessories is calculated. A weight data storage unit that stores weight of a chassis associated with a predetermined chassis type and weight storage data including each axle load based on the weight; and a track to be calculated. About the chassis type, the weight of the intermediate body and the intermediate body information that specifies each axle load by the weight, the weight of the bed and the body information that specifies each axle load by the weight, the weight of the accessory Accessory information specifying each axle load by weight, crew information specifying the weight of the occupant and each axle load by the weight, and specifying each axle load by the weight of the load and the weight Input means for inputting an input data including Nobutsu information, based on the stored weight data stored in the input data or the weight data storage unit is input by said input means,
Setting means for setting the weight of each of the chassis, intermediate bodywork, accessories, loading platform, occupant, and load, and each axle load based on the weight; and setting each axle load based on each axle load set by the setting means. A truck load calculating system comprising: a calculating unit that calculates a load; and an output unit that outputs each axle total load calculated by the calculating unit. 2. The weight storage data includes an actual measured weight of the chassis obtained by actual measurement and each measured axle load, and the output unit performs, by a predetermined operation, the same type as the input model of the chassis. When the measured weight and the measured axle load are output, and the measured weight and the measured axle load are input, the setting means sets the input measured weight as the weight of the chassis, and calculates the input measured axle load. The truck load calculation system according to claim 1, wherein each of the axle loads is set. 3. The truck has a single front wheel and a rear two wheels.
The setting means sets each axle load based on an object offset, which is an interval between a load center position of the rear wheel 2 axes and a center of gravity of the object, a wheel base, and a weight of the object. The track load calculation system according to claim 1 or 2, wherein: 4. A judgment means for judging whether or not the calculated front wheel axle total load is smaller than a front wheel tire allowable load determined according to a tire size for an input chassis type; The truck load calculation system according to claim 3, further comprising: warning means for warning when the load is equal to or more than the front wheel allowable load. 5. The calculating means calculates a gross vehicle weight from the set chassis weight, intermediate body weight, loading weight, accessory weight, occupant weight and loaded weight, and the output means calculates the total weight of the vehicle. The truck load calculation system according to any one of claims 1 to 4, wherein a specification sheet including information on the obtained gross vehicle weight and each axle gross load is output. 6. A total axle load applied to front and rear axles of a truck including a chassis, a loading platform for loading a load, an intermediate body disposed between the chassis and the loading platform, and accessories. A weight data storage step of storing, in a storage medium, weight storage data including a weight of a chassis associated with a predetermined chassis type and each axle load based on the weight, The model of the chassis for the target truck, the weight of the intermediate body and the intermediate body information that specifies each axle load based on the weight, the bed weight and the body information that specifies each axle load based on the weight, and the accessories Weight and accessory information that specifies each axle load by the weight, occupant weight and crew information that specifies each axle load by the weight, and weight of the load and each axle load by the weight An input step of inputting input data including load information to be determined, and, based on the input data or the weight storage data stored in the storage medium, a chassis, an intermediate body, accessories, a carrier, a passenger, A setting step of setting the weight of each of the loads and each axle load based on the weight; a calculating step of calculating each axle total load from each set axle load; and outputting the calculated total axle load. An output step; and a track load calculation method comprising: