CN117553889A - A weighing method for mobile large transport vehicles - Google Patents

Abstract

A method of weighing a mobile large transport vehicle comprising: step one: and (3) field assembly of a weighing system: according to the length, width, axle number and line number of the large transport vehicle to be weighed, the number of weighing plates is reasonably arranged, two weighing systems are manufactured, and the two weighing systems are arranged according to the distance between two rows of tires of the large transport vehicle to be weighed; step two: weighing and assigning standard load: under the same terrain condition, each weighing plate is subjected to standard load weighing assignment; step three: verification or calibration; step four: weighing a wheel axle; step five: a second assay or calibration. The utility model provides a quick, accurate and reliable weighing method for a movable large transport vehicle.

Description

A weighing method for mobile large transport vehicles

Technical field

The invention belongs to the technical field of measuring and weighing equipment, and specifically refers to a weighing method for mobile large transport vehicles.

Background technique

Oversized transport vehicles refer to over-sized transport vehicles that carry items that cannot be disassembled, and refer to vehicles that transport and distribute goods with large total mass and volume on the road. The "Regulations on Highway Management of Over-limit Transport Vehicles" issued by the Highway Bureau of the Ministry of Transport requires that key information such as "total mass of vehicles and cargo" and "axle load of each axle" should be accurately weighed and confirmed when applying for a license and during on-site inspections. .

The transportation process of large-sized transport vehicles is very complicated and requires special transportation tools and escort solutions. These large cargoes have the characteristics of "high value, overweight, overlength, overwidth, overheight, and cannot be disassembled". They are generally urgently needed equipment for key projects. If they are detained due to verification and weighing, it will seriously affect the construction progress of key projects and increase the cost of construction. The operating costs of enterprises and drivers, and social conflicts will also be very prominent.

Currently, due to the lack of reliable on-site weighing methods, we are often helpless to deal with the growing number of weighing, approval and law enforcement issues for overweight, over-length, and over-wide large cargo, especially Class III and IV large cargo transport vehicles, which even exceed The road alignment and the prescribed limits of the passing capacity of bridges and culverts require detouring, reconstruction or even demolition of obstacles encountered. We can only be forced to adopt various "flexible" and helpless methods (such as carriers' self-reported false data) to roughly deal with them. , the risks brought by this are self-evident. During the on-site inspection of licenses for large transport vehicles, problems such as false declarations by vehicle owners, "large vehicles with small licenses", and "inconsistent vehicle licenses" appeared, which disrupted the order of the large transport market, worsened the transportation business environment, damaged highway facilities, and even Causing major public safety incidents. On the one hand, some truck owners and drivers innocently stated that they did not do it intentionally, but they suffered from failure to go through the weighing and approval procedures according to normal procedures; on the other hand, it also encouraged some carriers to take risks in pursuit of high returns from illegal transportation. , constantly challenging the authority of traffic law enforcement. This current situation has great hidden dangers for transportation safety production, road construction and maintenance, and the protection of people's property. Management methods such as oral propaganda and education for drivers have little effect.

Contents of the invention

The technical problem to be solved by the present invention is to provide a fast, accurate and reliable weighing method for mobile large transport vehicles.

The present invention is implemented as follows:

A method for weighing mobile large transport vehicles, including the following steps:

Step 1: On-site assembly of the weighing system:

According to the length, width, number of axles and lines of the heavy-lift vehicle to be weighed, the number of weighing plates should be reasonably arranged, two weighing systems should be made, and arranged according to the distance between the two rows of tires of the heavy-lift vehicle to be weighed. Good two weighing systems;

Step 2: Standard load weighing assignment:

Under the same terrain conditions, each weighing plate must first be weighed and assigned a standard load value;

Step 3: Verification or calibration:

On the calibration mounting hole of each weighing plate, install the gantry-type reaction force device of the load measuring instrument for verification or calibration, lock the rod of the reaction force device on the bottom plate of the weighing plate frame, and use a level gauge to indicate Use nuts to adjust the beam to a horizontal state; place a universal adjustment base plate on the weighing plate, and use the ball head mechanism combined with the instructions of the level to adjust the base to a horizontal state;

Install the standard load unit of the load measuring instrument, use the standard load unit to assign the full-scale standard load value to each weighing plate at multiple test points, and then perform a full-scale weighing and repeatability (including offset load if necessary) Verification or calibration to ensure that the weighing error is within the maximum allowable error range;

Step 4: Weigh the axle:

After dismantling the standard load unit, drive the large transport vehicle over the two completed weighing systems to ensure that all axles pass through the weighing module at least once, and obtain the axle load of each axle from the weighing data processor of the circuit module The weighing data and the total mass of vehicles and cargo are displayed through the management equipment. The management equipment uploads the information to the traffic management cloud platform in real time for data analysis and processing.

Furthermore, it also includes:

Step 5: Second verification or calibration:

Repeat step three and use the standard load cell to perform full-scale weighing and repeatability verification or calibration on each weighing plate to verify the accuracy of the weighing plate;

If the verification or calibration result in step five is within a certain maximum tolerance range with the verification or calibration result in step three, the weighing data in step four will be the actual mass data of the large-size transport vehicle, and will be processed through the management equipment Display and manage real-time information of equipment to the traffic management cloud platform for data analysis and processing;

If the verification or calibration result in step five and the verification or calibration result in step three exceed the maximum tolerance range, check the status of the weighing plate and whether the transport vehicle is driving abnormally when passing the weighing plate, and then repeat step three. Until the verification or calibration results in steps five and three meet the requirements.

Further, the weighing system includes: two transversely connected weighing plate groups;

Each weighing plate group includes: a plurality of longitudinally connected weighing plates; the weighing plate at the beginning and the weighing plate at the end of each weighing plate group are both A guide plate is connected to guide the large transport vehicle to drive smoothly to the top of the weighing plate group;

Each weighing plate includes: rack bottom plate and weighing module;

The middle part of the rack bottom plate has a recessed part that matches the shape of the weighing module, and the weighing module is arranged in the recessed part in the middle part of the rack bottom plate; both ends of the weighing module are pre-wired with Tightening bolts connect the weighing module and the rack bottom plate as a whole; both longitudinal sides of the rack bottom plate are provided with buckle devices for longitudinal connection; the transverse side of the rack bottom plate The sides are provided with hinges for lateral connections;

The weighing module includes: elastomer and resistance strain gauge;

There are three bridge-type main load-bearing beams in the middle of the elastic body, and two strain holes are opened at the two ends of each main load-bearing beam where the strain is maximum, and the resistance strain gauge is pasted in the strain hole; The front and rear of the main load-bearing beam together form a measuring bridge, forming a multi-sensor matrix arrangement, so that the weighing value of the weighed object at any position on the weighing module is basically the same;

Both ends of the elastomer are provided with circuit board installation frames with sealing covers. A circuit module is installed inside the installation frame. The circuit module is connected to the resistance strain gauge for processing and sending weighing quantities;

The bottom plate of the frame is also provided with calibration mounting holes for installing the gantry-type reaction force device of the load measuring instrument;

It also includes a management system, which is installed in a management device; the management device includes: a weighing instrument, a computer terminal or a mobile terminal;

The sensor converts the quality signal into a voltage signal and transmits it to the management device. The management system in the management device converts the voltage signal sent by the sensor into a digital signal and then displays it;

The management equipment is also equipped with a communication function module, which is used to upload information to the traffic management cloud platform in real time for data analysis and processing.

Further, thin-walled metal cover plates are welded to both side walls of the strain hole of the weighing module.

Further, the chassis bottom plate is made of alloy.

A method for weighing mobile large transport vehicles. The weighing method includes the following steps:

Step S1: On-site assembly of the weighing system:

According to the length, width, number of axles and lines of the heavy-lift vehicle to be weighed, the number of weighing plates should be reasonably arranged, two weighing systems should be made, and arranged according to the distance between the two rows of tires of the heavy-lift vehicle to be weighed. Good two weighing systems;

Step S2: Standard load weighing assignment:

Under the same terrain conditions, each weighing plate must first be weighed and assigned a standard load value;

Step S3: First verification or calibration:

On the calibration mounting hole of each weighing plate, install the gantry-type reaction force device of the load measuring instrument for verification or calibration, lock the rod of the reaction force device on the bottom plate of the weighing plate frame, and use a level gauge to indicate Use nuts to adjust the beam to a horizontal state; place a universal adjustment base plate on the weighing plate, and use the ball head mechanism combined with the instructions of the level to adjust the base to a horizontal state;

Install the standard load unit of the load measuring instrument, use the standard load unit to assign the full-scale standard load value to each weighing plate at multiple test points, and then perform a full-scale weighing and repeatability (including offset load if necessary) Verification or calibration to ensure that the weighing error is within the maximum allowable error range;

Step S4: First axle weighing:

After dismantling the standard load unit, drive the large transport vehicle over the two completed weighing systems to ensure that all axles pass through the weighing module at least once, and obtain the axle load of each axle from the weighing data processor of the circuit module Weighing data related to the total mass of the vehicle and cargo;

Step S5: Second axle weighing:

For the second time, the large transport vehicle drove smoothly over the two completed weighing systems to ensure that all axles passed through the weighing module at least once. The axle load and axle load of each axle were obtained from the weighing data processor of the circuit module. Weighing data of total vehicle and cargo weight;

If the verification or calibration results in step S5 and the verification or calibration results in step S4 exceed the maximum tolerance range, check the installation status of the weighing plate and whether the transport vehicle drives abnormally when passing the weighing plate, and then repeat the steps. S5, until the two consecutive axle weighing results of steps S5 and S4 meet the requirements; then, take the average of the two axle weighings of step S4 and step S5 as the weighing of the axle load of each axle and the total mass of the vehicle. data;

Step S6: Second verification or calibration:

Repeat step S3, use the standard load unit to perform full-scale weighing and repeatability verification or calibration on each weighing plate to verify the weighing accuracy of the weighing plate;

If the verification or calibration result in step S6 is within a certain maximum tolerance range with the verification or calibration result in step S3, then the average value of the weighing data in step S4 and step S5 is the actual mass data of the large-piece transport vehicle. It is displayed through management equipment, and the information is uploaded to the traffic management cloud platform in real time for data analysis and processing;

If the verification or calibration results in step S6 and the verification or calibration results in step S3 exceed the maximum tolerance range, check the installation status of the weighing plate and whether the transport vehicle drives abnormally when passing the weighing plate, and then repeat step S3. , until the verification or calibration results in steps S6 and S3 meet the requirements, then the average value of the weighing data in steps S4 and S5 is the actual mass data of the large-piece transport vehicle.

Further, the weighing system is characterized by: including: two transversely connected weighing plate groups;

Each weighing plate group includes: a plurality of longitudinally connected weighing plates; the weighing plate at the beginning and the weighing plate at the end of each weighing plate group are both A guide plate is connected to guide the large transport vehicle to drive smoothly to the top of the weighing plate group;

Each weighing plate includes: rack bottom plate and weighing module;

The middle part of the rack bottom plate has a recessed part that matches the shape of the weighing module, and the weighing module is arranged in the recessed part in the middle part of the rack bottom plate; both ends of the weighing module are pre-wired with Tightening bolts connect the weighing module and the rack bottom plate as a whole; both longitudinal sides of the rack bottom plate are provided with buckle devices for longitudinal connection; the transverse side of the rack bottom plate The sides are provided with hinges for lateral connections;

The weighing module includes: elastomer and resistance strain gauge;

There are three bridge-type main load-bearing beams in the middle of the elastic body, and two strain holes are opened at the two ends of each main load-bearing beam where the strain is maximum, and the resistance strain gauge is pasted in the strain hole; The front and rear of the main load-bearing beam together form a measuring bridge, forming a multi-sensor matrix arrangement, so that the weighing value of the weighed object at any position on the weighing module is basically the same;

Both ends of the elastomer are provided with circuit board installation frames with sealing covers. A circuit module is installed inside the installation frame. The circuit module is connected to the resistance strain gauge for processing and sending weighing quantities;

The bottom plate of the frame is also provided with calibration mounting holes for installing the gantry-type reaction force device of the load measuring instrument;

It also includes a management system, which is installed in a management device; the management device includes: a weighing instrument, a computer terminal or a mobile terminal;

The sensor converts the quality signal into a voltage signal and transmits it to the management device. The management system in the management device converts the voltage signal sent by the sensor into a digital signal and then displays it;

The management equipment is also equipped with a communication function module, which is used to upload information to the traffic management cloud platform in real time for data analysis and processing.

Further, thin-walled metal cover plates are welded to both side walls of the strain hole of the weighing module.

Further, the chassis bottom plate is made of alloy.

The advantages of the present invention are:

1. The maximum wheel weight that can be weighed is 20t, and the axle weight is 40t. There is no upper limit on the total weight of vehicles and cargo, and there is no upper limit on the number of axles and wheels. The weighing accuracy is not less than 5%;

2. Dynamic passing is possible, and the minimum speed is not less than 5km/h;

3. It is portable and movable for deployment, with a maximum road gradient of 3%, and is suitable for vehicles with various suspension types;

4. The value can be traced to ensure that the weighing data is accurate and reliable.

5. The weighing system in the method of the present invention can be temporarily installed on a solid and flat highway or a spacious road surface to automatically weigh the vehicles passing through the system area and obtain the axle load of the passing vehicles, the total mass of the vehicle and cargo, the number of axles, and the number of axles. Model, wheelbase, license plate, time, speed and other information can be used to detect overload and overload of large transport vehicles and upload the detection data to the management system or cloud platform.

Description of the drawings

The present invention will be further described below with reference to the accompanying drawings and embodiments.

Figure 1 is a schematic flowchart of method steps according to the first embodiment of the present invention.

Figure 2 is a schematic flowchart of method steps according to the second embodiment of the present invention.

Figure 3 is a schematic flowchart of method steps according to the third embodiment of the present invention.

Figure 4 is a schematic structural diagram of the weighing system used in the method of the present invention.

Figure 5 is a schematic diagram of the overall structure of the weighing plate in the weighing system used in the present invention.

Figure 6 is a schematic diagram of the bottom perspective structure of the weighing plate in the weighing system used in the present invention.

Figure 7 is a schematic top view of the exploded structure of the weighing plate in the weighing system used in the present invention.

Fig. 8 is a schematic bottom view of the exploded structure of the weighing plate in the weighing system used in the present invention.

Figure 9 is a front view of the weighing plate in the weighing system used in the present invention.

Figure 10 is a top view of the weighing plate in the weighing system used in the present invention.

Figure 11 is a left side view of the weighing plate in the weighing system used in the present invention.

Figure 12 is a functional block diagram of the management system in the weighing system used in the present invention.

Figure 13 is a schematic diagram of the verification or calibration status of the present invention.

Figure 14 is a schematic diagram of the weighing state of the present invention.

Detailed ways

First embodiment:

Direct weighing method (i.e. direct verification or calibration method), as shown in Figure 1, includes the following steps:

Step 1: On-site assembly of the weighing system:

As shown in Figures 4 and 14, there are two main layout methods: one is based on the length, width, number of axles, number of lines and other information of the so-called large transport vehicle 200 that is commonly used in road transportation, and is configured in the software management system in advance. The layout plan is preset, and the layout plan that conforms to the current so-called large-size transport vehicle 200 is retrieved from the layout plan library; secondly, when the software management system does not yet include the layout plan of the current so-called large-size transport vehicle 200, it can be configured on-site Arrange according to the actual situation, and add it to the software management system solution library if necessary. (If there is no software management system, you can also rely on manual information such as vehicle length, width, number of axles, number of lines, etc. to make a layout plan.) Choose one of the above layout methods, reasonably arrange the number of weighing plates 1, and pass each The buckle device 111 of the weighing plate 1 connects each weighing plate 1 and the guide plate 2, and connects the two weighing plate groups (Group A and Group B) through the transverse hinge 112 to make two weighing systems 100 and press The distance between the two rows of tires of the large transport vehicle 200 to be weighed is arranged so that the two weighing systems 100 are arranged;

Step 2: Standard load weighing assignment:

Under the same terrain conditions after completing the assembly in step 1, perform multiple different standard load weighing assignments on each weighing plate 1;

Step 3: First verification or calibration:

As shown in Figure 13, a gantry with a load measuring instrument 300 for verification or calibration (please refer to Chinese Utility Model Patent 202221607614.2: A gantry-type large scale verification device) is installed on the calibration mounting hole 113 of each weighing plate 1 Type reaction force device 301, lock the rod of the reaction force device 301 on the frame base 11 of the weighing plate 1, and use the level indicator to adjust the cross beam to a horizontal state using nuts; place a universal gimbal on the weighing plate 1 Adjust the bottom plate, use the ball head mechanism and the instructions of the level to adjust the base to a horizontal state;

Install the standard load unit 302 of the load measuring instrument 300, use the standard load unit 302 to assign a full-scale standard load value to each weighing plate at multiple test points, and then perform a full-scale weighing and repeatability (including if necessary) Unbalanced load) and other verification or calibration to ensure that the weighing error is within the maximum allowable error range;

Step 4: Weigh the axle:

After dismantling the standard load unit 302, drive the large transport vehicle 200 smoothly over the two completed weighing systems 100 to ensure that all axles pass through the weighing module 12 at least once. From the weighing data processor of the circuit module The weighing data of each axle load and the total mass of the vehicle and cargo are obtained and displayed through the management equipment. The management equipment uploads vehicle license plate information, large cargo information, weighing data, weighing time, weighing location and other information in real time ( Use precise positioning functions such as Beidou/GPS to automatically identify weighing locations) to the traffic management cloud platform for data analysis and processing.

Second embodiment:

Comparative weighing method one (i.e. ABA weighing method) includes the following steps:

Step 1: On-site assembly of the weighing system:

As shown in Figures 4 and 14, there are two main layout methods: one is based on the length, width, number of axles, number of lines and other information of the so-called large transport vehicle 200 that is commonly used in road transportation, and is configured in the software management system in advance. The layout plan is preset, and the layout plan that conforms to the current so-called large-size transport vehicle 200 is retrieved from the layout plan library; secondly, when the software management system does not yet include the layout plan of the current so-called large-size transport vehicle 200, it can be configured on-site Arrange according to the actual situation, and add it to the software management system solution library if necessary. (If there is no software management system, you can also rely on manual information such as vehicle length, width, number of axles, number of lines, etc. to make a layout plan.) Choose one of the above layout methods, reasonably arrange the number of weighing plates 1, and pass each The buckle device 111 of the weighing plate 1 connects each weighing plate 1 and the guide plate 2, and connects the two weighing plate groups (Group A and Group B) through the transverse hinge 112 to make two weighing systems 100 and press The distance between the two rows of tires of the large transport vehicle 200 to be weighed is arranged so that the two weighing systems 100 are arranged;

Step 2: Standard load weighing assignment:

Under the same terrain conditions after completing the assembly in step 1, perform multiple different standard load weighing assignments on each weighing plate 1.

Step 3: First verification or calibration (A1 here):

As shown in Figure 13, a gantry with a load measuring instrument 300 for verification or calibration (please refer to Chinese Utility Model Patent 202221607614.2: A gantry-type large scale verification device) is installed on the calibration mounting hole 113 of each weighing plate 1 Type reaction force device 301, lock the rod of the reaction force device 301 on the frame base 11 of the weighing plate 1, and use the level indicator to adjust the cross beam to a horizontal state using nuts; place a universal gimbal on the weighing plate 1 Adjust the bottom plate, use the ball head mechanism and the instructions of the level to adjust the base to a horizontal state;

Install the standard load unit 302 of the load measuring instrument 300, use the standard load unit 302 to assign a full-scale standard load value to each weighing plate at multiple test points, and then perform a full-scale weighing and repeatability (including if necessary) Unbalanced load) and other verification or calibration to ensure that the weighing error is within the maximum allowable error range;

Step 4: Weigh the wheel axle (B here):

After dismantling the standard load unit 302, drive the large transport vehicle 200 smoothly over the two completed weighing systems 100 to ensure that all axles pass through the weighing module 12 at least once. From the weighing data processor of the circuit module Obtain the weighing data of each axle load and the total mass of the vehicle and cargo;

Step 5: Second verification or calibration (A2 here):

Repeat step three, use the standard load unit 302 to perform full range weighing and repeatability verification or calibration on each weighing plate 1 to verify the weighing accuracy of the weighing plate 1;

If the verification or calibration result in step five is within a certain maximum tolerance range with the verification or calibration result in step three, the weighing data in step four will be the actual mass data of the large-size transport vehicle;

If the verification or calibration result in step five and the verification or calibration result in step three exceed the maximum tolerance range, check the installation status of the weighing plate 1 and whether the transport vehicle 200 drives abnormally when passing the weighing plate 1, and then Repeat step three until the verification or calibration results of step five and step three meet the requirements, then the weighing data in step four is the actual quality data of the large transport vehicle, and is displayed through the management equipment, which is uploaded in real time. Vehicle license plate information, large cargo information, weighing data, weighing time, weighing location and other information are sent to the traffic management cloud platform for data analysis and processing.

Third embodiment:

Comparative weighing method 2 (ABBA weighing method) includes the following steps:

Step S1: On-site assembly of the weighing system:

As shown in Figures 4 and 14, there are two main layout methods: one is based on the length, width, number of axles, number of lines and other information of the so-called large transport vehicle 200 that is commonly used in road transportation, and is configured in the software management system in advance. The layout plan is preset, and the layout plan that conforms to the current so-called large-size transport vehicle 200 is retrieved from the layout plan library; secondly, when the software management system does not yet include the layout plan of the current so-called large-size transport vehicle 200, it can be configured on-site Arrange according to the actual situation, and add it to the software management system solution library if necessary. (If there is no software management system, you can also rely on manual information such as vehicle length, width, number of axles, number of lines, etc. to make a layout plan.) Choose one of the above layout methods, reasonably arrange the number of weighing plates 1, and pass each The buckle device 111 of the weighing plate 1 connects each weighing plate 1 and the guide plate 2, and connects the two weighing plate groups (Group A and Group B) through the transverse hinge 112 to make two weighing systems 100 and press The distance between the two rows of tires of the large transport vehicle 200 to be weighed is arranged so that the two weighing systems 100 are arranged;

Step S2: Standard load weighing assignment:

Under the same terrain conditions after completing the assembly in step 1, perform multiple different standard load weighing assignments on each weighing plate 1.

Step S3: First verification or calibration (here A1):

As shown in Figure 13, a gantry with a load measuring instrument 300 for verification or calibration (please refer to Chinese Utility Model Patent 202221607614.2: A gantry-type large scale verification device) is installed on the calibration mounting hole 113 of each weighing plate 1 Type reaction force device 301, lock the rod of the reaction force device 301 on the frame base 11 of the weighing plate 1, and use the level indicator to adjust the cross beam to a horizontal state using nuts; place a universal gimbal on the weighing plate 1 Adjust the bottom plate, use the ball head mechanism and the instructions of the level to adjust the base to a horizontal state;

Install the standard load unit 302 of the load measuring instrument 300, use the standard load unit 302 to assign a full-scale standard load value to each weighing plate at multiple test points, and then perform a full-scale weighing and repeatability (including if necessary) Unbalanced load) and other verification or calibration to ensure that the weighing error is within the maximum allowable error range;

Step S4: First axle weighing (B1 here):

After dismantling the standard load unit 302, drive the large transport vehicle 200 smoothly over the two completed weighing systems 100 to ensure that all axles pass through the weighing module 12 at least once. From the weighing data processor of the circuit module Obtain the weighing data of each axle load and the total mass of the vehicle and cargo;

Step S5: Second axle weighing (B2 here):

For the second time, the large transport vehicle 200 passes smoothly on the two completed weighing systems 100 to ensure that all axles pass through the weighing module 12 at least once, and each axle is obtained from the weighing data processor of the circuit module. The weighing data of the axle load and the total mass of the vehicle and cargo; if the verification or calibration results in step S5 and the verification or calibration results in step S4 exceed the maximum tolerance range, check the installation status of the weighing plate 1 and the transportation vehicle 200 when passing Check whether there is abnormal driving when weighing plate 1, and then repeat step S5 until the two consecutive axle weighing results of step S5 and step S4 meet the requirements. Next, average the two wheel axle weighings in steps S4 and S5 as the weighing data of the axle load of each axle and the total mass of the vehicle;

Step S6: Second verification or calibration (A2 here):

Repeat step S3, use the standard load unit 302 to perform full range weighing and repeatability verification or calibration on each weighing plate 1 to verify the weighing accuracy of the weighing plate 1;

If the verification or calibration result of step S6 and the verification or calibration result of step S3 are within a certain maximum tolerance range, then the average of the weighing data in step S4 and step S5 is the actual mass data of the large-piece transport vehicle;

If the verification or calibration result in step S6 and the verification or calibration result in step S3 exceed the maximum tolerance range, check the installation status of the weighing plate 1 and whether the transport vehicle 200 drives abnormally when passing the weighing plate 1, and then Repeat step S3 until the verification or calibration results of step S6 and step S3 meet the requirements, then the average of the weighing data in step S4 and step S5 is the actual quality data of the large-piece transport vehicle, and is displayed through the management equipment , the management equipment uploads vehicle license plate information, large cargo information, weighing data, weighing time, weighing location and other information in real time to the traffic management cloud platform for data analysis and processing.

The weighing system 100 used in the above three embodiments, as shown in Figures 4 to 14, includes: two transversely connected weighing plate groups (Group A and Group B are assembled);

Each weighing plate group (group A or group B) includes: a plurality of longitudinally connected weighing plates 1; the first and last weighing plates 1 and 1 of each weighing plate group. 1 are connected to a guide plate 2, which is used to guide the large transport vehicle 200 to drive smoothly to the top of the assembled weighing plate group;

Each weighing plate 1 includes: a rack bottom plate 11 and a weighing module 12; the middle part of the rack bottom plate 11 has a recessed part that matches the shape of the weighing module 12, and the weighing module 12 is arranged in the middle part of the rack bottom plate 11 in the recess; both ends of the weighing module 12 connect the weighing module 12 and the rack bottom plate 11 as a whole through bolts 13 with pre-tightening force; both longitudinal sides of the rack bottom plate 11 are provided with longitudinal connections for longitudinal connection Buckling device 111; a hinge 112 for lateral connection is provided on one side of the lateral side of the rack bottom plate 11;

Weighing module 12 includes: elastomer 121 and resistance strain gauge 122;

There are three bridge-type main load-bearing beams in the middle of the elastic body 121. Two strain holes 1211 are opened at the two ends of each main load-bearing beam where the strain is maximum. Resistance strain gauges 122 are pasted in the strain holes 1211; each main load-bearing beam has two strain holes. The front and rear of the load-bearing beam together form a measuring bridge, forming a multi-sensor matrix arrangement, so that the weighing value of the weighed object at any position on the weighing module 12 is basically the same;

Both ends of the elastic body 121 are provided with circuit board mounting frames 123 with sealing covers. A circuit module is installed inside the mounting frame 123. The circuit module is connected to a resistance strain gauge 122 (sensor) for processing and sending the weighing quantity;

Thin-walled metal cover plates 1212 are welded to both side walls of the strain hole 1211 of the weighing module 12 to prevent water vapor, dust or other impurities from entering.

The chassis bottom plate 11 is also provided with a calibration mounting hole 113 for installing the gantry-type reaction force device 301 of the load measuring instrument 300 . The bottom plate 11 of the rack is made of alloy, and the bottom has an anti-slip design.

It also includes a management system, which is installed in a management device; the management device can be a weighing instrument, a computer terminal or a mobile terminal;

The sensor (resistance strain gauge 122) converts the quality signal into a voltage signal and transmits it to the management equipment. The management system in the management equipment converts the voltage signal sent by the sensor into a digital signal and then displays it; the management equipment is also equipped with a communication function module. The communication function module is used to upload vehicle license plate information, weighing data, weighing time, weighing location and other information in real time to the traffic management cloud platform for data analysis and processing.

The invention can weigh the maximum wheel weight of 20t and the axle weight of 40t. There is no upper limit on the total weight of vehicles and cargo, and there is no upper limit on the number of axles and wheels. The weighing accuracy is not less than 5%; it can perform dynamic passing, and the minimum vehicle speed is not less than 5km. /h; it is portable and movable for deployment, with a maximum road gradient of 3%, and is suitable for vehicles with various suspension types; it can be traced to ensure the accuracy and reliability of weighing data.

The weighing system in the method of the present invention can be temporarily installed on a solid and flat highway or a spacious road surface to automatically weigh the vehicles passing through the system area and obtain the axle load, total mass of the vehicle and cargo, axle number, axle type, Wheelbase, license plate, time, speed and other information can be used to detect overload and overload of large transport vehicles and upload the detection data to the management system or cloud platform.

The above embodiments and drawings do not limit the form, style or weighing accuracy of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention. .

Claims (9)

1. A method for weighing a movable large transport vehicle is characterized by comprising the following steps: the method comprises the following steps:

step one: and (3) field assembly of a weighing system:

according to the length, width, axle number and line number of the large transport vehicle to be weighed, the number of weighing plates is reasonably arranged, two weighing systems are manufactured, and the two weighing systems are arranged according to the distance between two rows of tires of the large transport vehicle to be weighed;

step two: weighing and assigning standard load:

under the same terrain condition, each weighing plate is subjected to standard load weighing assignment;

step three: verification or calibration:

the method comprises the steps of installing a gantry type counterforce device of a load measuring instrument for verification or calibration on a calibration installation hole of each weighing plate, locking a rod piece of the counterforce device on a frame bottom plate of the weighing plate, and adjusting a cross beam to be in a horizontal state by using nuts according to a level indicator; placing a universal adjusting bottom plate on the weighing plate, and adjusting the base to be in a horizontal state by using a ball head mechanism in combination with an indication of a level meter;

the standard load unit of the load measuring instrument is installed, the standard load unit is used for carrying out full-range standard load assignment on each weighing plate according to a plurality of test points, and then verification or calibration such as full-range weighing, repeatability (if necessary, unbalanced load can be contained) and the like is carried out once, so that the weighing error is ensured to be within the maximum allowable error range;

step four: weighing a wheel axle:

after the standard load unit is removed, a large transport vehicle runs on the two built weighing systems, all axles are ensured to pass through the weighing module at least once, weighing data of axle loads and total mass of the vehicle and the cargo are obtained from a weighing data processor of the circuit module, the weighing data are displayed through the management equipment, and the management equipment uploads information to the traffic management cloud platform in real time for data analysis and processing.

2. A method of weighing a mobile mass transit vehicle as defined in claim 1, wherein: further comprises:

step five: second assay or calibration:

repeating the step three, carrying out full-range weighing and repeatability verification or calibration on each weighing plate by using a standard load unit, and verifying the accuracy of the weighing plates;

if the verification or calibration result in the fifth step and the verification or calibration result in the third step are within a certain maximum tolerance range, weighing data in the fourth step are the actual quality data of the large transportation vehicle, and are displayed through the management equipment, and real-time information of the management equipment is sent to the traffic management cloud platform for data analysis and processing;

if the verification or calibration result of the step five exceeds the maximum tolerance range with the verification or calibration result of the step three, checking the state of the weighing plate and whether the transportation vehicle runs abnormally when passing through the weighing plate, and repeating the step three until the verification or calibration results of the step five and the step three meet the requirements.

3. A method of weighing a mobile mass transit vehicle as claimed in claim 1 or claim 2, wherein: the weighing system comprises: two weighing plate groups connected transversely;

each of the weight plate sets includes: a plurality of longitudinally connected weighing plates; the head-most weighing plate and the tail-most weighing plate of each weighing plate group are connected with a guide plate for guiding a large transport vehicle to stably run above the weighing plate groups;

each of the weigh plates comprising: a frame bottom plate and a weighing module;

the middle part of the rack bottom plate is provided with a concave part matched with the weighing module in shape, and the weighing module is arranged in the concave part of the middle part of the rack bottom plate; the two ends of the weighing module are connected with the bottom plate of the frame into a whole through bolts with pretightening force; both longitudinal side edges of the bottom plate of the frame are provided with buckling devices for longitudinal connection; a hinge for transverse connection is arranged on one transverse side of the bottom plate of the frame;

the weighing module comprises: an elastic body and an electrical resistance strain gauge;

the middle part of the elastic body is provided with three bridge type main spandrel girders, two strain holes are formed in the maximum strain position of the two ends of each main spandrel girder, and the resistance strain gauge is adhered in each strain hole; the front and the back of each main spandrel girder form a measuring bridge together to form a multi-sensor matrix arrangement, so that weighing values of the weighed objects at any positions on the weighing module are basically the same;

two ends of the elastic body are provided with circuit board mounting frames with sealing cover plates, circuit modules are mounted in the mounting frames, and the circuit modules are connected with the resistance strain gauges and used for processing and sending weighing quantities;

the chassis bottom plate is also provided with a calibration mounting hole for mounting a gantry type counterforce device of the load measuring instrument;

the system also comprises a management system, wherein the management system is installed in a management device; the management apparatus includes: weighing instrument, computer terminal or mobile terminal;

the sensor converts the quality signal into a voltage signal and transmits the voltage signal to the management equipment, and a management system in the management equipment converts the voltage signal sent by the sensor into a digital signal and then displays the digital signal;

the management equipment is also provided with a communication function module, and the communication function module is used for uploading information to the traffic management cloud platform in real time to analyze and process data.

4. A method of weighing a mobile mass transit vehicle as defined in claim 3, wherein: and the two side walls of the strain hole of the weighing module are welded with thin-wall metal cover plates.

5. A method of weighing a mobile mass transit vehicle as defined in claim 3, wherein: the bottom plate of the frame is made of alloy.

6. A method for weighing a movable large transport vehicle is characterized by comprising the following steps: the weighing method comprises the following steps:

step S1: and (3) field assembly of a weighing system:

according to the length, width, axle number and line number of the large transport vehicle to be weighed, the number of weighing plates is reasonably arranged, two weighing systems are manufactured, and the two weighing systems are arranged according to the distance between two rows of tires of the large transport vehicle to be weighed;

step S2: weighing and assigning standard load:

under the same terrain condition, each weighing plate is subjected to standard load weighing assignment;

step S3: first time assay or calibration:

the method comprises the steps of installing a gantry type counterforce device of a load measuring instrument for verification or calibration on a calibration installation hole of each weighing plate, locking a rod piece of the counterforce device on a frame bottom plate of the weighing plate, and adjusting a cross beam to be in a horizontal state by using nuts according to a level indicator; placing a universal adjusting bottom plate on the weighing plate, and adjusting the base to be in a horizontal state by using a ball head mechanism in combination with an indication of a level meter;

the standard load unit of the load measuring instrument is installed, the standard load unit is used for carrying out full-range standard load assignment on each weighing plate according to a plurality of test points, and then verification or calibration such as full-range weighing, repeatability (if necessary, unbalanced load can be contained) and the like is carried out once, so that the weighing error is ensured to be within the maximum allowable error range;

step S4: first wheel axle weighing:

after the standard load unit is removed, a large transport vehicle is driven over the two built weighing systems, so that all axles at least pass through the primary weighing module, and weighing data of axle loads and total mass of the vehicle and the cargo are obtained from a weighing data processor of the circuit module;

step S5: second wheel axle weighing:

stably driving the large transport vehicle on the two built weighing systems for the second time, ensuring that all axles pass through the weighing module at least once, and obtaining weighing data of axle loads and total mass of the vehicle and the cargo from a weighing data processor of the circuit module;

if the verification or calibration result of the step S5 and the verification or calibration result of the step S4 exceed the maximum tolerance range, checking the installation state of the weighing plate and whether the transportation vehicle runs abnormally when passing through the weighing plate, and repeating the step S5 until the continuous twice wheel axle weighing results of the step S5 and the step S4 meet the requirement; then, taking the average value of the two times of wheel axle weighing in the step S4 and the step S5 as weighing data of the axle load and the total mass of the vehicle and the goods;

step S6: second assay or calibration:

repeating the step S3, carrying out full-range weighing and repeatability verification or calibration on each weighing plate by using a standard load unit, and verifying the weighing accuracy of the weighing plates;

if the verification or calibration result of the step S6 and the verification or calibration result of the step S3 are within a certain maximum tolerance range, the average value of the weighing data in the step S4 and the step S5 is the actual quality data of the large-scale transportation vehicle, the actual quality data is displayed through the management equipment, and information is uploaded to the traffic management cloud platform in real time for data analysis and processing;

if the verification or calibration result of the step S6 and the verification or calibration result of the step S3 exceed the maximum tolerance range, checking the installation state of the weighing plate and whether the transportation vehicle runs abnormally when passing through the weighing plate, and repeating the step S3 until the verification or calibration results of the step S6 and the step S3 meet the requirements, wherein the average value of the weighing data in the step S4 and the step S5 is the actual mass data of the large transportation vehicle.

7. A method of weighing a mobile mass transit vehicle as defined in claim 6, wherein: the weighing system, its characterized in that: comprising the following steps: two weighing plate groups connected transversely;

each of the weight plate sets includes: a plurality of longitudinally connected weighing plates; the head-most weighing plate and the tail-most weighing plate of each weighing plate group are connected with a guide plate for guiding a large transport vehicle to stably run above the weighing plate groups;

each of the weigh plates comprising: a frame bottom plate and a weighing module;

the middle part of the rack bottom plate is provided with a concave part matched with the weighing module in shape, and the weighing module is arranged in the concave part of the middle part of the rack bottom plate; the two ends of the weighing module are connected with the bottom plate of the frame into a whole through bolts with pretightening force; both longitudinal side edges of the bottom plate of the frame are provided with buckling devices for longitudinal connection; a hinge for transverse connection is arranged on one transverse side of the bottom plate of the frame;

the weighing module comprises: an elastic body and an electrical resistance strain gauge;

the middle part of the elastic body is provided with three bridge type main spandrel girders, two strain holes are formed in the maximum strain position of the two ends of each main spandrel girder, and the resistance strain gauge is adhered in each strain hole; the front and the back of each main spandrel girder form a measuring bridge together to form a multi-sensor matrix arrangement, so that weighing values of the weighed objects at any positions on the weighing module are basically the same;

two ends of the elastic body are provided with circuit board mounting frames with sealing cover plates, circuit modules are mounted in the mounting frames, and the circuit modules are connected with the resistance strain gauges and used for processing and sending weighing quantities;

the chassis bottom plate is also provided with a calibration mounting hole for mounting a gantry type counterforce device of the load measuring instrument;

the system also comprises a management system, wherein the management system is installed in a management device; the management apparatus includes: weighing instrument, computer terminal or mobile terminal;

the sensor converts the quality signal into a voltage signal and transmits the voltage signal to the management equipment, and a management system in the management equipment converts the voltage signal sent by the sensor into a digital signal and then displays the digital signal;

the management equipment is also provided with a communication function module, and the communication function module is used for uploading information to the traffic management cloud platform in real time to analyze and process data.

8. A method of weighing a mobile mass transit vehicle as defined in claim 7, wherein: and the two side walls of the strain hole of the weighing module are welded with thin-wall metal cover plates.

9. A method of weighing a mobile mass transit vehicle as defined in claim 7, wherein: the bottom plate of the frame is made of alloy.