Dumper weighing method, dumper weighing system and dumper

Abstract

The invention relates to the technical field of vehicles, and particularly discloses a dumper weighing method, a dumper weighing system and a dumper, and the dumper weighing system comprises a suspension pressure sensor for sending load change signals of a front suspension and a rear suspension of the dumper to a whole vehicle controller; the dumper weighing method comprises the steps that a K1 value, a b1 value, a K2 value and a b2 value of a dumper are calibrated under the no-load condition and the preset load condition respectively; the current value output by the suspension pressure sensor under the load condition is recorded, the current value of the front suspension is I front, and the current value of the rear suspension is I rear; the bearing weight M is equal to K1 * I < front > + b1 + K2 * I < rear > + b2-r; when each coefficient of the bearing weight M is calibrated, the weight of the measured vehicle is G when the vehicle is in a no-load state, and after each coefficient of the bearing weight M is calibrated, when the vehicle is in a no-load state, r = K1 * I < front > + b1 + K2 * I < rear > + b2-G. When the method is used for weighing, the suspension pressure sensor outputs the current I < front > and the current I < rear > of the front suspension effect and the rear suspension effect, the real-time bearing weight of the dumper can be calculated according to the formula M = K1 * I < front > + b1 + K2 * I < rear > + b2-r, and the situation that the whole dumper runs abnormally due to overload can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a dump truck weighing method, a dump truck weighing system and a dump truck. Background Art

[0002] At present, mining dump trucks have been widely used in large-scale open-pit mine transportation and water conservancy project construction. The loading monitoring and collection and recording of vehicle operation data of mining dump trucks are beneficial to mine production management, and have the effect of avoiding vehicle overloading, improving economic benefits and reducing costs. Due to the limitations of the working conditions of this type of vehicle, weighing by scale cannot monitor the vehicle load in real time, and overloading often occurs, resulting in abnormal operation of the entire vehicle and accidents.

[0003] Therefore, there is an urgent need for a dump truck weighing method, a dump truck weighing system and a dump truck to achieve real-time monitoring of the dump truck load condition. Summary of the invention

[0004] The purpose of the present invention is to provide a dump truck weighing method, a dump truck weighing system and a dump truck, so as to solve the problem in the related art that the load condition of the dump truck cannot be monitored in real time.

[0005] In one aspect, the present invention provides a dump truck weighing method, which is implemented by a dump truck weighing system, wherein the dump truck weighing system includes a suspension pressure sensor for sending a signal of a load change of a front suspension and a rear suspension of the dump truck to a vehicle controller,

[0006] The dump truck weighing method includes:

[0007] When the dump truck is empty and loaded with a preset load, calibrate the value of K1, the value of b1, the value of K2 and the value of b2;

[0008] Record the current value output by the suspension pressure sensor under load. The current value of the front suspension is I 前 , the current value of the rear suspension is I 后 ;

[0009] Loading weight M = K1*I 前 +b1+K2*I 后 +b2-r;

[0010] When calibrating the coefficients of the load-bearing weight M, the weight of the vehicle when it is unloaded is measured as G. After the coefficients of the load-bearing weight M are calibrated, when the vehicle is unloaded, r = K1*I 前 +b1+K2*I 后 +b2-G.

[0011] As a preferred technical solution of the dump truck weighing method, four suspension pressure sensors are provided and are respectively arranged on the left front suspension, right front suspension, left rear suspension and right rear suspension of the dump truck;

[0012] The measured current values ​​at the left front suspension are I1, the right front suspension is I2, the left rear suspension is I3, and the right rear suspension is I4;

[0013] I 前 =(I1+I2) / 2, I 后 =(I3+I4) / 2.

[0014] As a preferred technical solution for the weighing method of a dump truck, when calibrating the coefficients of the load weight M, the weight M of the front suspension at the scale under no-load condition is recorded. 11 , the weight M of the rear suspension located at the scale 21 , the current of the suspension pressure sensor at the left front suspension is I 11 , the current of the suspension pressure sensor at the right front suspension is I 21 , the current of the suspension pressure sensor at the left rear suspension is I 31 The current of the suspension pressure sensor at the right rear suspension is I 41 ;

[0015] When calibrating the coefficients of the load-bearing weight M, record the weight M of the front suspension at the scale under the preset load condition. 12 , the weight M of the rear suspension located at the scale 22 , the current of the suspension pressure sensor at the left front suspension is I 12 , the current of the suspension pressure sensor at the right front suspension is I 22 , the current of the suspension pressure sensor at the left rear suspension is I 32 The current of the suspension pressure sensor at the right rear suspension is I 42 ;

[0016] The value of K1, the value of b1, the value of K2 and the value of b2 are calibrated according to the measured values.

[0017] As the optimal technical solution for dump truck weighing method,

[0018] K1=2(M 12 -M 11 ) / (I 12 +I 22 -I 11 -I 21 );

[0019] b1=[M 11 (I 12 +I22 )-M 12 (I 11 +I 21 )] / (I 12 +I 22 -I 11 -I 21 );

[0020] K2=2(M 22 -M 21 ) / (I 32 +I 42 -I 31 -I 41 );

[0021] b2=[M 21 (I 32 +I 42 )-M 22 (I 31 +I 41 )] / (I 32 +I 42 -I 31 -I 41 ).

[0022] As a preferred technical solution of the dump truck weighing method, the dump truck weighing system also includes a control panel, which is communicatively connected with the vehicle controller, and the reading of the scale is input through the control panel.

[0023] As a preferred technical solution of the dump truck weighing method, the vehicle controller sends the obtained numerical value of the carrying weight of the dump truck to the control panel.

[0024] As a preferred technical solution for the dump truck weighing method, the preset load a is between 0% and 25% of the full load weight of the dump truck, and the load weight M is obtained. a formula;

[0025] The preset load b is between 25% and 50% of the full load weight of the dump truck, and the load weight M is obtained. b formula;

[0026] The preset load c is between 50% and 75% of the full load weight of the dump truck, and the load weight M is obtained. c formula;

[0027] The preset load d is between 75% and 100% of the full load weight of the dump truck, and the load weight M is obtained. d formula;

[0028] When the vehicle is actually loaded, use M a Formula to calculate vehicle load m a ;

[0029] If m a The output is between 0% and 25% of the full load weight of the dump truck. a The load calculated by the formula is m a ;

[0030] If m a The output is between 25% and 50% of the full load weight of the dump truck. b The load calculated by the formula is m b ;

[0031] If m a The output M is between 50% and 75% of the full load weight of the dump truck. c The load calculated by the formula is m c ;

[0032] If m a The output M is between 75% and 100% of the full load weight of the dump truck. d The load calculated by the formula is m d .

[0033] As a preferred technical solution of the dump truck weighing method, the dump truck weighing system further includes an audible and visual alarm, which is communicatively connected with the vehicle controller;

[0034] When the load-bearing weight is greater than a preset value c, the sound and light alarm is activated.

[0035] On the other hand, the present invention provides a dump truck weighing system, which adopts the dump truck weighing method of any of the above-mentioned schemes, and the dump truck weighing system includes a whole vehicle controller, a control panel, an audible and visual alarm, four suspension pressure sensors and four protective covers. The control panel, the audible and visual alarm and the four suspension pressure sensors are respectively communicated with the whole vehicle controller, and the four suspension pressure sensors are respectively arranged on the left front suspension, right front suspension, left rear suspension and right rear suspension of the dump truck, and the four protective covers are arranged on the four suspension pressure sensors in a one-to-one correspondence.

[0036] In yet another aspect, the present invention provides a dump truck, comprising the dump truck weighing system in any of the above schemes.

[0037] The beneficial effects of the present invention are:

[0038] The present invention provides a dump truck weighing method, a dump truck weighing system and a dump truck. The method is implemented by the dump truck weighing system. The dump truck weighing system includes a suspension pressure sensor for sending load change signals of the front suspension and the rear suspension of the dump truck to a whole vehicle controller. The method includes calibrating the value of K1, the value of b1, the value of K2 and the value of b2 of the dump truck under no-load and preset load a conditions respectively; recording the current value output by the suspension pressure sensor under load conditions, wherein the current value of the front suspension is I 前 , the current value of the rear suspension is I 后 ; Bearing weight M = K1*I 前 +b1+K2*I 后 +b2-r; When the coefficients of the load-bearing weight M are calibrated, the weight of the vehicle when it is unloaded is measured as G. After the coefficients of the load-bearing weight M are calibrated, when the vehicle is unloaded, r=K1*I 前 +b1+K2*I 后 +b2-G. When using this dump truck weighing method, the suspension pressure sensor can output the current I under the action of the front suspension. 前 and the current I under the action of the rear suspension 后 , and then through the load weight M = K1 * I 前 +b1+K2*I 后 +b2+c, the real-time load weight of the dump truck can be calculated, thus avoiding the problem of abnormal operation of the whole vehicle due to overloading and causing accidents. At the same time, the weight of the dump truck itself will change during long-term use, which will lead to inaccurate weighing methods. For this reason, r=K1*I is added to the load weight M formula 前 +b1+K2*I 后 +b2-G, r is the change in the mass on the dump truck's spring. This setting adds the function of zero position calibration, further improving the accuracy of the dump truck weighing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Flow chart of a method for weighing a dump truck in an embodiment of the present invention;

[0040] Figure 2 It is a connection diagram of the dump truck weighing system in an embodiment of the present invention.

[0041] In the figure:

[0042] 1. Vehicle controller; 2. Suspension pressure sensor; 3. Control panel; 4. Sound and light alarm. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] like Figure 1-2As shown, this embodiment provides a dump truck weighing method, which is implemented by a dump truck weighing system. The dump truck weighing system includes a suspension pressure sensor 2 for sending a signal of a load change of the front suspension and the rear suspension of the dump truck to a vehicle controller 1. The dump truck weighing method includes calibrating the value of K1, the value of b1, the value of K2 and the value of b2 when the dump truck is empty and has a preset load a; recording the current value output by the suspension pressure sensor 2 under load, and the current value of the front suspension is I 前 , the current value of the rear suspension is I 后 ; Bearing weight M = K1*I 前 +b1+K2*I 后 +b2-r; When the coefficients of the load-bearing weight M are calibrated, the weight of the vehicle when it is unloaded is measured as G. After the coefficients of the load-bearing weight M are calibrated, when the vehicle is unloaded, r=K1*I 前 +b1+K2*I 后 When using this dump truck weighing method, the suspension pressure sensor 2 can output the current I under the action of the front suspension. 前 and the current I under the action of the rear suspension 后 , and then through the load weight M = K1 * I 前 +b1+K2*I 后 + b2, the real-time load weight of the dump truck can be calculated, thus avoiding the problem of abnormal operation of the whole vehicle due to overloading and causing accidents. At the same time, the weight of the dump truck will change during long-term use, which will lead to inaccurate weighing methods. For this reason, r=K1*I is added to the load weight M formula 前 +b1+K2*I 后 +b2-G, r is the change in the mass on the dump truck's spring. This setting adds the function of zero position calibration, further improving the accuracy of the dump truck weighing method.

[0048] For I 前 and I 后 How to measure specifically, optionally, there are four suspension pressure sensors 2 and they are respectively arranged at the left front suspension, right front suspension, left rear suspension and right rear suspension of the dump truck; the measured current value I1 at the left front suspension, the current value I2 at the right front suspension, the current value I3 at the left rear suspension and the current value I4 at the right rear suspension; I 前 =(I1+I2) / 2, I 后 =(I3+I4) / 2. In this embodiment, I 前 is the average current value of the left front suspension and the right front suspension at the same time, I 后 It is the average current value of the left rear suspension and the right rear suspension at the same time.

[0049] Specifically, the suspension pressure sensor 2 is a current type pressure sensor. Compared with the voltage type pressure sensor, the voltage type pressure sensor converts the measurement signal into a 0-5V voltage output, which is the form of direct output of the operational amplifier, and the signal power is usually less than 0.05W. In contrast, the current type pressure sensor converts the measurement signal into a current signal output, which usually has a higher anti-interference ability, and the output current linearity of the current type pressure sensor is more stable.

[0050] For the calibration of K1 value, b1 value, K2 value and b2 value, optionally, when calibrating each coefficient of the load weight M, record the weight M of the front suspension at the scale under no-load condition. 11 , the weight of the rear suspension at the scale M 21 , the current of the suspension pressure sensor 2 at the left front suspension is I 11 , the current of the suspension pressure sensor 2 at the right front suspension is I 21 , the current of the suspension pressure sensor 2 at the left rear suspension is I 31 The current of the suspension pressure sensor 2 at the right rear suspension is I 41 ; When calibrating the coefficients of the load-bearing weight M, record the weight M of the front suspension on the scale under the preset load condition 12 , the weight of the rear suspension at the scale M 22 , the current of the suspension pressure sensor 2 at the left front suspension is I 12 , the current of the suspension pressure sensor 2 at the right front suspension is I 22 , the current of the suspension pressure sensor 2 at the left rear suspension is I 32 The current of the suspension pressure sensor 2 at the right rear suspension is I 42 ; Calibrate the values ​​of K1, b1, K2 and b2 according to the measured values. In this embodiment, the values ​​of K1, b1, K2 and b2 are calibrated by the current values ​​of each suspension pressure sensor 2 and the weight of the front and rear suspensions measured under no-load conditions, and the current values ​​of each suspension pressure sensor 2 and the weight of the front and rear suspensions measured under load conditions.

[0051] Specifically, K1=2(M 12 -M 11 ) / (I 12 +I 22 -I 11 -I 21 ); b1 = [M 11 (I 12 +I 22 )-M 12 (I 11 +I 21 )] / (I 12 +I 22 -I 11 -I21 ); K2=2(M 22 -M 21 ) / (I 32 +I 42 -I 31 -I 41 ); b2 = [M 21 (I 32 +I 42 )-M 22 (I 31 +I 41 )] / (I 32 +I 42 -I 31 -I 41 ).

[0052] Due to the differences in the vehicle itself and the changes in the load-bearing performance under different loads, the K1 value, b1 value, K2 value and b2 value of the dump truck vary in different load-bearing ranges, which leads to a large vehicle accuracy. To avoid this problem, the load of the dump truck can be divided into four intervals, and the preset load a is between 0% and 25% of the full load weight of the dump truck to obtain the load weight M. a Formula; At this time, the preset load is a value between 0 and 25% of the full load weight of the dump truck, preferably 20% of the full load weight of the dump truck.

[0053] The preset load b is between 25% and 50% of the full load weight of the dump truck, and the load weight M is obtained. b Formula; At this time, the preset load is a value between 25% and 50% of the full load weight of the dump truck, preferably 40% of the full load weight of the dump truck.

[0054] The preset load c is between 50% and 75% of the full load weight of the dump truck, and the load weight M is obtained. c Formula; At this time, the preset load is a value between 50% and 75% of the full load weight of the dump truck, preferably 60% of the full load weight of the dump truck.

[0055] The preset load d is between 75% and 100% of the full load weight of the dump truck, and the load weight M is obtained. d Formula; At this time, the preset load is a value between 75% and 100% of the full load weight of the dump truck, preferably 80% of the full load weight of the dump truck.

[0056] When the vehicle is actually loaded, use M a Formula to calculate vehicle load m a .

[0057] In this step, since the actual weight of the vehicle is unknown, one of the four weight-bearing formulas is randomly selected for weight bearing. Although the actual weight of the vehicle cannot be accurately measured, the error does not affect the approximate judgment of the actual weight of the vehicle. Therefore, according to M a Formula to calculate vehicle load m a , you can determine which formula you need to choose to accurately calculate the actual vehicle load. a In other embodiments, the load weight M may also be selected b , load-bearing weight M c and load weight M d One of them can roughly judge the actual carrying weight of the vehicle.

[0058] If m a The output is between 0% and 25% of the full load weight of the dump truck. a The load calculated by the formula is m a ;

[0059] If m a The output is between 25% and 50% of the full load weight of the dump truck. b The load calculated by the formula is m b ;

[0060] If m a The output M is between 50% and 75% of the full load weight of the dump truck. c The load calculated by the formula is m c ;

[0061] If m a The output M is between 75% and 100% of the full load weight of the dump truck. d The load calculated by the formula is m d .

[0062] Optionally, the dump truck weighing system further includes a control panel 3, which is in communication connection with the vehicle controller 1, and the reading of the scale is input through the control panel 3. In this embodiment, when calibrating the values ​​of K1, b1, K2, and b2, the measured values ​​of the front suspension and the rear suspension measured by the scale need to be input into the vehicle controller 1, so the values ​​measured by the scale can be input into the vehicle controller 1 through the buttons on the control panel 3. In other embodiments, a data transmission interface can also be provided on the vehicle controller 1, a data transmission plug can be provided on the scale, and the data transmission plug can be plugged into the data transmission interface, so that the data measured by the scale can be transmitted to the vehicle controller 1.

[0063] Optionally, the vehicle controller 1 sends the obtained value of the load weight M of the dump truck to the control panel 3. In this embodiment, a display screen is provided on the control panel 3, and the measured value of the load weight M can be viewed through the display screen on the control panel 3.

[0064] Optionally, the dump truck weighing system further includes an audible and visual alarm 4, which is in communication connection with the vehicle controller 1; when the load weight M is greater than a preset value c, the audible and visual alarm 4 is activated. In this embodiment, the preset value c is the sum of the weight of the dump truck itself and the maximum weight that can be carried. When the load weight M is greater than the preset value c, it indicates that the dump truck is overloaded, and the audible and visual alarm 4 is used to alert the staff.

[0065] The present embodiment also provides a dump truck weighing system, which adopts the dump truck weighing method in any of the above schemes. The dump truck weighing system includes a vehicle controller 1, a control panel 3, an audible and visual alarm 4, four suspension pressure sensors 2 and four protective covers. The control panel 3, the audible and visual alarm 4 and the four suspension pressure sensors 2 are respectively connected to the vehicle controller 1 for communication. The four suspension pressure sensors 2 are respectively arranged on the left front suspension, the right front suspension, the left rear suspension and the right rear suspension of the dump truck. The four protective covers are arranged on the four suspension pressure sensors 2 in a one-to-one correspondence. In the present embodiment, the protective cover plays a protective role on the suspension pressure sensor 2. Since the suspension pressure sensor 2 is arranged at a position close to the wheel, the rotation of the tire will bring up mud, water and gravel. In order to prevent the mud, water and gravel from damaging the suspension pressure sensor 2, a protective cover is provided on the suspension pressure sensor 2.

[0066] This embodiment also provides a dump truck, including the dump truck weighing system in the above solution.

[0067] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for weighing a dump truck, implemented by a dump truck weighing system, wherein the dump truck weighing system comprises a suspension pressure sensor (2) for sending a signal of a load change of a front suspension and a rear suspension of the dump truck to a vehicle controller (1), It is characterized in that include: The dump truck is calibrated with the value of K1, the value of b1, the value of K2 and the value of b2 respectively when it is empty and when it is loaded with a preset load; Record the current value output by the suspension pressure sensor (2) under load, the current value of the front suspension is I 前 , the current value of the rear suspension is I 后 ; Loading weight M = K1*I 前 +b1+K2*I 后 +b2-r; When calibrating the coefficients of the load-bearing weight M, the weight of the vehicle when it is unloaded is measured as G. After the coefficients of the load-bearing weight M are calibrated, when the vehicle is unloaded, r = K1*I 前 +b1+K2*I 后 +b2-G.

2. The method for weighing a dump truck according to claim 1, characterized in that: The suspension pressure sensors (2) are provided in four numbers and are respectively arranged on the left front suspension, the right front suspension, the left rear suspension and the right rear suspension of the dump truck; The measured current values ​​at the left front suspension are I1, the right front suspension is I2, the left rear suspension is I3, and the right rear suspension is I4; I 前 =(I1+I2) / 2,I 后 = (I3+I4) / 2.

3. The method for weighing a dump truck according to claim 1, characterized in that: When calibrating the coefficients of the load-bearing weight M, record the weight M of the front suspension on the scale when it is unloaded. 11 , the weight M of the rear suspension located at the scale 21 , the current of the suspension pressure sensor (2) at the left front suspension is I 11 , the current of the suspension pressure sensor (2) at the right front suspension is I 21 , the current of the suspension pressure sensor (2) at the left rear suspension is I 31 and the current of the suspension pressure sensor (2) at the right rear suspension is I 41 ; When calibrating the coefficients of the load-bearing weight M, record the weight M of the front suspension at the scale under the preset load condition. 12 , the weight M of the rear suspension located at the scale 22 , the current of the suspension pressure sensor (2) at the left front suspension is I 12 , the current of the suspension pressure sensor (2) at the right front suspension is I 22 , the current of the suspension pressure sensor (2) at the left rear suspension is I 32 and the current of the suspension pressure sensor (2) at the right rear suspension is I 42 ; The value of K1, the value of b1, the value of K2 and the value of b2 are calibrated according to the measured values.

4. The method for weighing a dump truck according to claim 3, characterized in that: K1=2(M 12 -M 11 ) / (I 12 +I 22 -I 11 -I 21 ); b1=[M 11 (AND 12 +I 22 )-M 12 (AND 11 +I 21 )] / (AND 12 +I 22 -AND 11 -AND 21 ); K2=2(M 22 -M 21 ) / (I 32 +I 42 -I 31 -I 41 ); b2=[M 21 (I 32 +I 42 )-M 22 (I 31 +I 41 )] / (I 32 +I 42 -I 31 -I 41 )。 5. The method for weighing a dump truck according to claim 3, characterized in that: The dump truck weighing system further comprises a control panel (3), wherein the control panel (3) is communicatively connected with the vehicle controller (1), and the reading of the weighing scale is inputted via the control panel (3).

6. The method for weighing a dump truck according to claim 5, characterized in that: The vehicle controller (1) sends the obtained numerical value of the load-bearing weight of the dump truck to the control panel (3).

7. The method for weighing a dump truck according to claim 3, characterized in that: The preset load a is between 0% and 25% of the full load weight of the dump truck, and the load weight M is obtained. a formula; The preset load b is between 25% and 50% of the full load weight of the dump truck, and the load weight M is obtained. b formula; The preset load c is between 50% and 75% of the full load weight of the dump truck, and the load weight M is obtained. c formula; The preset load d is between 75% and 100% of the full load weight of the dump truck, and the load weight M is obtained. d formula; When the vehicle is actually loaded, use M a Formula to calculate vehicle load m a ; If m a The output is between 0% and 25% of the full load weight of the dump truck. a The load calculated by the formula is m a ; If m a The output is between 25% and 50% of the full load weight of the dump truck. b The load calculated by the formula is m b ; If m a The output M is between 50% and 75% of the full load weight of the dump truck. c The load calculated by the formula is m c ; If m a The output M is between 75% and 100% of the full load weight of the dump truck. d The load calculated by the formula is m d .

8. The dump truck weighing method according to any one of claims 1 to 7, characterized in that: The dump truck weighing system further comprises an audible and visual alarm (4), wherein the audible and visual alarm (4) is communicatively connected to the vehicle controller (1); When the load-bearing weight is greater than a preset value c, the sound and light alarm (4) is activated.

9. A dump truck weighing system, using the dump truck weighing method according to any one of claims 1 to 8, characterized in that: The invention comprises a vehicle controller (1), a control panel (3), an audible and visual alarm (4), four suspension pressure sensors (2) and four protective covers, wherein the control panel (3), the audible and visual alarm (4) and the four suspension pressure sensors (2) are respectively connected to the vehicle controller (1) for communication, the four suspension pressure sensors (2) are respectively arranged on the left front suspension, the right front suspension, the left rear suspension and the right rear suspension of the dump truck, and the four protective covers are arranged one by one with the four suspension pressure sensors (2).

10. A dump truck, characterized in that: Includes the dump truck weighing system as described in claim 9.

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