CN100582683C - Container vehicle double box separate weighing method - Google Patents

Abstract

The invention relates to a weighing method by box-dividing of a container vehicle dual-box carrying, belonging to the weighing field of a container truck which carries the container. The method comprises the following steps: (1) all vehicle types and data parameters of trailer are memorized; (2) a mathematic model of 1 equal to A plus (P3 minus P'3) multiplied by ((C33 plus 1')/ Gcos Theta) plus delta of the center 1 of gravity of goods along the length direction of the container and a weight mathematic model of the front container and the rear container of G1 equal to G(3L' minus 2l)/2L' and G2 equal to G(2l-L')/ 2L' are established and written into recognition management software; wherein, A is a constant ranging from 400mm to 1000mm; Dheta is ranging from 0 DEG to 30 DEG; Delta is a correction coefficient; (3) data of the full vehicle weight W and weight of all axles under static heavy vehicle state are recorded, the total weight G of goods is equal to W minus T by calculation; (4) the center 1 of gravity of goods along the length direction of the container, the weight of the front container G1 and the weight of the rear container G2 are worked out. The weighing method can respectively measure weights of all axles, total weight and respective weight of two containers by one-step balancing.

Description

Method for weight calculation of double boxes carried by container vehicles

technical field

The invention relates to a box-divided weighing method for container vehicles carrying double boxes, and belongs to the field of weighing containers carried by container trucks.

Background technique

As a measuring device, the truck scale mainly weighs the tare weight and gross weight of the transporting goods vehicles to further obtain the net weight of the carrying goods, and has been widely used in the weighing of port goods. For vehicles transporting containers, the net weight is the total weight of the loaded container, that is, the weight of the cargo plus the weight of the empty container. At present, truck scales are mainly used to weigh containers in major ports to obtain the total weight of containers. With the development of the transportation industry, one container truck loading one container can no longer meet the needs of logistics, and sometimes one truck loads two containers. Therefore, when a container vehicle carries a container, the weight of the container can be judged by the truck scale. However, when there are two containers on the container truck at the same time, only one of the containers can be hoisted and weighed by a special hoisting scale, or one of the containers can be placed on a special weighing scale by a spreader. The weighing device weighs it, which not only causes a large weighing error, but also affects the shipping efficiency. Therefore, when two containers are carried by a container truck at present, the truck scale cannot distinguish the weight of each container.

Contents of the invention

The purpose of the present invention is to provide a method for weighing the weight of each container when the truck carrying two containers is parked on the truck scale.

The technical solution of the present invention to achieve the above object is: a method for weighing the weight of the double box carried by the container vehicle, which is characterized in that:

(1) Store the wheelbase C ₁₂ between the front axle and the central axle of each model trailer, the wheelbase C ₂₃ between the central axle and the rear axle, the distance l″ between the center pin of the trailer and the central axle, the empty weight T, The data parameters of front axle load P ₁ ′, center axle load P ₂ ′, rear axle load P ₃ ′, angle θ between the trailer frame and the horizontal axis and container length L′ in the empty state;

(2), establish the mathematical model of the cargo center of gravity l of the container along its length direction $l=A+\frac{(P_3-P_3^{\′})\×(C_{\mathrm{twenty\; three}}+l^{\′\′})}{G\cos \mathrm{\θ}}+\mathrm{\δ},$ And the mathematical model of the weight of the former container $G_{}$${}_1=\frac{G(3L^{\′}-2l)}{2L^{\′}}$ and post container weight mathematical model $G_2=\frac{G(2l-L^{\′})}{2L^{\′}},$ And write it into the identification management software, where: A is a constant value, A is between 400mm and 1000mm, θ is between 0 and 30°, and δ is a correction coefficient;

(3) Drive the trailer of the two containers carrying the real object onto the truck scale, and place the front axle, middle axle and rear axle of the trailer on the three independent unit scales of the truck scale respectively, and record the static heavy truck respectively According to the data of the full vehicle weight W and the front axle load P ₁ , the middle axle load P ₂ and the rear axle load P ₃ in the state, the total weight of the cargo is calculated as G=WT;

(4) Calculate the center of gravity l of the container along its length, the weight of the front container G ₁ and the weight of the rear container G _{2 , and output the weight of the front container G 1 ,} the weight of the rear container G ₂ , the weight of each axle and the total weight of the cargo.

The invention establishes the balance equation of the center of gravity of the container along the length direction. When the front axle, the middle axle and the rear axle of the heavy-duty vehicle are respectively parked on three independent unit scales of the truck scale for weighing, two container weights can be obtained. weight. As long as the vehicle of the heavy-duty container in the present invention is statically parked on the truck scale once, the weight of each axle, the total weight and the respective weights of the two containers can be measured respectively. Shipping efficiency. Because the present invention can quickly obtain the weight of two containers, it can provide guarantee for the management of loading and stowage at the port and the safety of the spreader during loading and hoisting.

Description of drawings

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a state diagram of a trailer without a container installed.

Fig. 2 is a state diagram of two containers being housed under the heavy load state of the trailer.

Detailed ways

In the method for weighting of container vehicles carrying double boxes according to the present invention, the wheelbase C ₁₂ between the front axle and the center axle of the trailer of each model, the wheelbase C ₂₃ between the center axle and the rear axle, and the center pin of the trailer are stored in the database. Distance l″ from the center axle, empty weight T, front axle weight P ₁ ′, middle axle weight P ₂ ′, rear axle weight P ₃ ′, trailer frame and horizontal axis The angle θ of the container and the data parameters of the container length L′ are shown in Figures 1 and 2, such as Mitsubishi (FV415HRLDUM), VOLVO380 (FM126X4), Dongfeng (EQ4243V), Aolong (ZZ43226M294) or Steyr (CQ4322BM294) and other models The data parameters are spared.

Establish a mathematical model of the center of gravity l of the container along its length $l=A+\frac{(P_3-P_3^{\′})\×(C_{\mathrm{twenty\; three}}+l^{\′\′})}{G\cos \mathrm{\θ}}+\mathrm{\δ},$ And the mathematical model of the weight of the former container $G_{}$${}_1=\frac{G(3L^{\′}-2l)}{2L^{\′}}$ and post container weight mathematical model $G_2=\frac{G(2l-L^{\′})}{2L^{\′}},$ And write it into the identification management software, where: A is a constant value, A is between 400mm ~ 1000mm, θ is between 0 ~ 30°, δ is a correction coefficient, l is the center of gravity of the container along its length, P ₃ is the axle load of the rear axle in the state of heavy vehicle, P ₃ ′ is the axle load of the rear axle in the state of empty vehicle, C ₂₃ is the wheelbase between the center axle of the trailer and the rear axle, l″ is the distance between the central pin and the center axle of the trailer G is the total weight of the cargo, θ is the angle between the trailer frame and the horizontal axis, and L' is the length of the container.

Drive the trailer with two containers loaded with real objects onto the truck scale, and place the front axle, middle axle and rear axle of the trailer on the three independent unit scales of the truck scale respectively, and record the full load under the static heavy truck state respectively. From the data of vehicle weight W, front axle load P ₁ , middle axle load P ₂ , and rear axle load P ₃ , the total cargo weight G=WT is calculated, and the center of gravity of the container along its length is calculated through the above data. l and the weight of the front container G ₁ and the weight of the rear container G ₂ , output the weight of the front container G ₁ and the weight of the rear container G ₂ .

When the center of gravity of the cargo along the length of the container of the present invention does not need to be corrected, the correction coefficient δ is zero. The correction coefficient δ can be corrected by the wheelbase C ₁₂ between the front axle and the central axle of the trailer, the front axle load P ₁ ′ of the empty car and the front axle load P ₁ of the heavy car, and its mathematical expression is: $\mathrm{\&delta;}=-{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">K</figure-callout>}}_1*\frac{(P_1-{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}^{\&prime;})*(C_{12}-l^{\&prime;\&prime;})}{G\cos \mathrm{\&theta;}},$ K ₁ is between 1000 and 1500.

The correction factor δ can also be passed through the wheelbase C ₁₂ between the front axle and the middle axle of the trailer, the front axle weight P ₁ ′ and the middle axle weight P _{2 ′ of the empty vehicle, and the front axle weight P 1 and P 2 ′} of the heavy load. The axle load of the central axis P ₂ corrects the center of gravity l of the container, and the mathematical expression $\mathrm{\&delta;}=-{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">K</figure-callout>}}_1*\frac{(P_1-{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}^{\&prime;})*(C_{12}-l^{\&prime;\&prime;})}{G\cos \mathrm{\&theta;}}+K_2\frac{(P_2-{P_2}^{\&prime;})*l^{\&prime;\&prime;}}{G\cos \mathrm{\&theta;}},$ Among them, K ₁ , and K ₂ are correction factors, K ₁ is between 1000 and 1500, and K ₂ is between 150 and 350, and the purpose of high-precision weighing can be achieved through the correction coefficient.

Example 1

Choose Aolong ZZ43226M294, Mitsubishi FV415HRLDUM and Dongfeng EQ4243V container vehicles.

The wheelbase C ₁₂ between the front axle and the central axle of the container trailers of Oron ZZ43226M294, Mitsubishi FV415HRLDUM and Dongfeng EQ4243V, the wheelbase C ₂₃ between the central axle and the rear axle, the distance between the center pin of the trailer and the central axle l″, Empty weight T, front axle weight P ₁ ′, middle axle weight P ₂ ′, rear axle weight P ₃ ′, angle θ between the trailer frame and the horizontal axis, and container length L′ in the empty state. Into the computer, the mathematical model of the center of gravity l of the container along its length $l=A+\frac{(P_3-P_3^{\&prime;})\&times;(C_{\mathrm{twenty\; three}}+l^{\&prime;\&prime;})}{G\cos \mathrm{\&theta;}}+\mathrm{\&delta;},$ And the mathematical model of the weight of its front container $G_{}$${}_1=\frac{G(3L^{\&prime;}-2l)}{2L^{\&prime;}}$ and post container weight mathematical model $G_2=\frac{G(2l-L^{\&prime;})}{2L^{\&prime;}}$ Write it into the identification management software. Drive the vehicle containing two containers of real objects onto the truck scale, and place the front axle, middle axle and rear axle of the vehicle on the three independent unit scales of the truck scale respectively, and the truck scale records the load under the static heavy load state respectively. The full weight W of the vehicle, the front axle weight P ₁ , the middle axle weight P ₂ and the rear axle weight P ₃ , and through the identification management software, the position of the center of gravity l of the container along its length is calculated, and the calculated The weight G ₁ of the front container and the weight G ₂ of the rear container are measured, and the weights of each axle, the total weight and the respective weights of the two containers are measured, and the data are output, see Table 1.

Table 1

Example 2

Basically the same as embodiment 1, the difference is the correction coefficient $\mathrm{\&delta;}=-{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">K</figure-callout>}}_1*\frac{(P_1-{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}^{\&prime;})}{G\cos \mathrm{\&theta;}},$ When K ₁ is between 1000 and 1500, the mathematical model of the center of gravity l of the container along its length $l=A+\frac{(P_3-P_3^{\&prime;})\&times;(C_{\mathrm{twenty\; three}}+l^{\&prime;\&prime;})}{G\cos \mathrm{\&theta;}}-{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">K</figure-callout>}}_1*\frac{(P_1-{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}^{\&prime;})}{G\cos \mathrm{\&theta;}},$ Calculate the center of gravity l of the container along its length, the weight G ₁ of the front container and the weight G ₂ of the rear container, measure the weight of each axle, the total weight and the respective weights of the two containers, output, display and print the data, see Table 2 shows.

Table 2

Example 3

The difference from Example 1 is the correction factor $\mathrm{\&delta;}=--{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">K</figure-callout>}}_1*\frac{(P_1-{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}^{\&prime;})}{G\cos \mathrm{\&theta;}}+K_2\frac{(P_2-{P_2}^{\&prime;})*l^{\&prime;\&prime;}}{G\cos \mathrm{\&theta;}},$ The center of gravity l of the container along its length is corrected, K ₁ is between 1000 and 1500, and K ₂ is between 150 and 350, at this time the mathematical model of the center of gravity l of the container along its length $l=A+\frac{(P_3-P_3^{\&prime;})\&times;(C_{\mathrm{twenty\; three}}+l^{\&prime;\&prime;})}{G\cos \mathrm{\&theta;}}-{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">K</figure-callout>}}_1*\frac{(P_1-{{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="C2008100234610010H1.png"\; state="\{\{state\}\}">P</figure-callout>}}_1}^{\&prime;})}{G\cos \mathrm{\&theta;}}+K_2\frac{(P_2-{P_2}^{\&prime;})*l^{\&prime;\&prime;}}{G\cos \mathrm{\&theta;}},$ Calculate the center of gravity l of the container along its length, and calculate the weight G ₁ of the front container and the weight G ₂ of the rear container, output the weight G ₁ of the front container, the weight G ₂ of the rear container, the weight of each axle and the total weight of the cargo, Stop the container vehicle statically on the independent unit scale of the truck scale, measure, display and print out the various data, see Table 3.

table 3

As can be seen from the above Tables 1 to 3, the correction coefficient of the present invention comprehensively considers the axle load of the center axle and the axle load of the front axle under the condition of no load and the axle load of the axle of the center axle and the axle load of the front axle under the condition of heavy load, and adopts Appropriate correction factors reduce errors.

The above-mentioned constant value A is 500, 800, 900, 1000, etc., the angle θ between the trailer frame and the horizontal axis is 5°, 8°, 12°, 15°, 18°, 20°, 25°30°, etc., and the correction factor K1 Choose 1100, 1150, 1200, 1250, 1300, 1400, 1450, 1500, etc., the same correction factor K2 is selected from 150 to 380, such as 160, 180, 200, 250, 300, etc., constant value A, trailer frame and horizontal axis The angle θ and the correction factors K1 and K2 can be adjusted accordingly as the model changes.

Claims (3)

1. A method for weighing the weight of two containers carried by a container vehicle, characterized in that: (1) Store the wheelbase C ₁₂ between the front axle and the central axle of each model trailer, the wheelbase C ₂₃ between the central axle and the rear axle, the distance l″ between the center pin of the trailer and the central axle, the empty weight T, The data parameters of front axle load P ₁ ′, center axle load P ₂ ′, rear axle load P ₃ ′, angle θ between the trailer frame and the horizontal axis and container length L′ in the empty state; (2), establish the mathematical model of the cargo center of gravity 1 of the container along its length direction $l=A+\frac{(P_3-P_3^{\&prime;})\&times;(C_{\mathrm{twenty\; three}}+l^{\&prime;\&prime;})}{G\cos \mathrm{\&theta;}}+\mathrm{\&delta;},$ And the mathematical model of the weight of the former container $G_1=\frac{G(3L^{\&prime;}-2l)}{2L^{\&prime;}}$ and post container weight mathematical model $G_2=\frac{G(2l-L^{\&prime;})}{2L^{\&prime;}},$ And write it into the identification management software, where: A is a constant value, A is between 400mm and 1000mm, θ is between 0 and 30°, and δ is a correction coefficient; (3) Drive the trailer of the two containers carrying the real object onto the truck scale, and place the front axle, middle axle and rear axle of the trailer on the three independent unit scales of the truck scale respectively, and record the static heavy truck respectively According to the data of the full vehicle weight W and the front axle load P ₁ , the middle axle load P ₂ and the rear axle load P ₃ in the state, the total weight of the cargo is calculated as G=WT; (4) Calculate the center of gravity 1 of the container along its length, the weight of the front container G 1 and the weight of the rear container G ₂ , and output the weight of the front container G ₁ , the weight of the rear container G ₂ , the weight of each axle _and the total weight of the cargo. 2. The weighing method according to claim 1, wherein the correction coefficient δ is zero. 3. The method for weighing by container vehicle carrying double boxes according to claim 1, characterized in that: the correction coefficient $\mathrm{\&delta;}=-K_1*\frac{(P_1-P_1^{\&prime;})}{G\cos \mathrm{\&theta;}},$ Among them, K ₁ is the correction factor, and K ₁ is between 1000 and 1500.

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