CN117553888A - Portable major possession transport vehicle weighing system - Google Patents

Abstract

A mobile mass transit vehicle weighing system comprising: two weighing plate groups connected transversely; each weighing plate set comprising: a plurality of longitudinally connected weighing plates; the head-end weighing plate and the tail-end weighing plate of each weighing plate group are connected with a slope guiding plate for guiding the large transport vehicle to stably run above the weighing plate groups; each weighing plate comprising: a frame bottom plate and a weighing module; the middle part of the frame bottom plate is provided with a concave part matched with the shape of the weighing module, and the weighing module is arranged in the concave part of the middle part of the frame bottom plate; and the bottom plate of the frame is also provided with a calibration mounting hole for mounting a gantry type counterforce device of the load measuring instrument. The weighing system can be temporarily installed on a firm and flat road or a spacious road, automatically weigh vehicles passing through the system area, and has portability, movable deployment and high weighing accuracy.

Description

Portable major possession transport vehicle weighing system

Technical Field

The utility model belongs to the technical field of metering weighing equipment, and particularly relates to a movable large transport vehicle weighing system.

Background

The large transport vehicle is an overrun transport vehicle for carrying non-detachable articles, and is a vehicle for transporting and distributing large-volume goods on roads with large total mass. The requirement of the "over-limit transportation vehicle running highway management regulation" issued by the public road bureau of the transportation department should accurately weigh and confirm key information such as the total mass of vehicles and goods, the axle load of each axle and the like during certificate handling and field check.

The transportation process of the large transport vehicle is very complex and needs to be completed by special transportation tools and protection schemes. The large goods have the characteristics of high value, overweight, overlong, ultra-wide, ultra-high and nondiscomposable, are generally urgent equipment required by key engineering, and if the key engineering construction progress is seriously affected by verification weighing retention, the operation cost of enterprises and drivers is increased, and the social contradiction is also very remarkable.

At present, due to the fact that no reliable on-site weighing means is available, the problem of weighing and approval of the large goods which are overweight, ultralong and ultrawide is often solved, and particularly, large goods in class III and class IV transport vehicles are even beyond the stipulated limit of the passing capacity of highway lines and bridges, and the encountered obstacles need to be bypassed, reconstructed and even removed, so that the risks are self-evident. There are great hidden trouble, such as being in the management means such as the oral propaganda education to the driver of being posited, the effect played is very little.

Disclosure of Invention

The utility model aims to provide a rapid, accurate and reliable mobile large transport vehicle weighing system.

The utility model is realized in the following way:

a mobile mass transit vehicle weighing system comprising: 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 slope guiding 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 data;

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

Further, in each weighing plate group, a plurality of guide plates are arranged between the plurality of weighing plates which are connected longitudinally at intervals.

Further, the two side walls of the strain hole of the weighing module are welded with thin-wall metal cover plates.

Further, the bottom plate of the frame is made of alloy.

Further, 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.

The utility model has the advantages that:

1. the maximum wheel weight of 20t, the axle weight of 40t, the total weight of the vehicle and the cargo without upper limit, the axle number and the wheel number without upper limit and the weighing accuracy not lower than 5 percent;

2. dynamic passing can be carried out, and the minimum speed is not less than 5km/h;

3. the vehicle has portability, movable deployment and a maximum use road gradient of 3%, and is suitable for vehicles with various suspension types;

4. the magnitude tracing can be performed, and accurate and reliable weighing data are ensured.

5. The weighing system can be temporarily installed on a firm and smooth highway or a spacious road, automatically weigh vehicles passing through a system area, acquire information such as axle load, total weight of the vehicles, axle number, axle type, axle base, license plate, time and speed and the like, detect overrun overload of a large transport vehicle and upload detection data to a management system or a cloud platform.

Drawings

The utility model will be further described with reference to the accompanying drawings, in conjunction with examples.

FIG. 1 is a schematic diagram of a mobile mass transit vehicle weighing system of the present utility model.

Fig. 2 is a schematic view of the overall structure of the weighing plate in the present utility model.

Fig. 3 is a schematic bottom perspective view of the weighing plate in the utility model.

Fig. 4 is a schematic top exploded view of the weighing plate of the present utility model.

Fig. 5 is a schematic view showing a bottom exploded structure of the weighing plate in the present utility model.

Fig. 6 is a front view of a weigh plate in the present utility model.

Fig. 7 is a top view of a weigh plate in the present utility model.

Fig. 8 is a left side view of the weighing plate of the present utility model.

Fig. 9 is a functional block diagram of a management system in the present utility model.

FIG. 10 is a schematic representation of an assay or calibration state of the present utility model.

Fig. 11 is a schematic view of the weighing state of the present utility model.

FIG. 12 is a flow chart of the first weighing mode step of the present utility model.

FIG. 13 is a flow chart of the steps of the second weighing mode of the present utility model.

FIG. 14 is a flow chart of the steps of the third weighing method of the present utility model.

Detailed Description

As shown in fig. 1-8, a mobile mass transit vehicle weighing system 100 includes: two transversely connected weighing plate groups (A group and B group are assembled);

each weighing plate group (group a or group B) comprising: a plurality of weighing plates 1 connected longitudinally; the head weighing plate 1 and the tail weighing plate 1 of each weighing plate group are connected with a slope guiding plate 2 for guiding the large transport vehicle 200 to stably run above the assembled weighing plate groups; in each weighing plate group (group A or group B), a plurality of guide plates 3 are arranged between a plurality of weighing plates 1 which are longitudinally connected at intervals so as to save resources, and the arrangement of the weighing plates 1 and the guide plates 3 is carried out in the most economical and most reliable way.

Each weighing plate 1 comprises: a chassis base 11 and a weighing module 12; the middle part of the frame bottom plate 11 is provided with a concave part matched with the shape of the weighing module 12, and the weighing module 12 is arranged in the concave part of the middle part of the frame bottom plate 11; the two ends of the weighing module 12 are connected with the weighing module 12 and the frame bottom plate 11 into a whole through bolts 13 with pretightening force; both longitudinal sides of the frame bottom plate 11 are provided with buckling devices 111 for longitudinal connection; a hinge 112 for transverse connection is arranged at one transverse side of the frame bottom plate 11;

a weighing module 12 comprising: elastomer 121 and resistance strain gauge 122;

the middle part of the elastic body 121 is provided with three bridge type main spandrel girders, two strain holes 1211 are formed at the maximum strain position of the two ends of each main spandrel girder, and resistance strain gauges 122 are stuck in the strain holes 1211; the front and back of each main spandrel girder form a measuring bridge together to form a multi-sensor matrix arrangement, so that the weighing values of the weighed objects at any positions on the weighing module 12 are basically the same;

two ends of the elastic body 121 are provided with circuit board mounting frames 123 with sealing cover plates, circuit modules are mounted in the mounting frames 123, and the circuit modules are connected with resistance strain gauges 122 (sensors) for processing and sending weighing data;

both side walls of the strain hole 1211 of the weighing module 12 are welded with thin-walled metal cover plates 1212, which prevent entry of moisture, dust or other impurities.

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

The system also comprises a management system, as shown in fig. 9, wherein the management system is installed in a management device; the management equipment 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 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 such as vehicle license plate information, weighing data, weighing time, weighing place and the like (adopting accurate positioning functions such as Beidou/GPS and the like to automatically identify the weighing place) to the traffic management cloud platform for data analysis and processing.

There are three ways to use the weighing method of a mobile mass transit vehicle weighing system 100 as described above:

the first way is: the direct weighing method (i.e., direct assay or calibration method), as shown in fig. 12, includes the following steps:

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

the arrangement mode mainly comprises two modes: firstly, presetting an arrangement scheme in a software management system in advance according to the information such as the length, the width, the number of axles, the number of lines and the like of the common large-scale transportation vehicle 200 in road transportation, and calling the arrangement scheme conforming to the current large-scale transportation vehicle 200 from an arrangement scheme library; secondly, when the software management system does not comprise the arrangement scheme of the currently-called large transport vehicle 200, the arrangement can be carried out on site according to actual conditions, and if necessary, the arrangement scheme can be newly added into the software management system scheme library. (if no software management system exists, the information of the length, the width, the number of axles, the number of lines and the like of the vehicles can be obtained manually, and the arrangement scheme is carried out), the number of the weighing plates 1 is reasonably arranged, the weighing plates 1 and the slope guiding plates 2 are connected through the buckling devices 111 of the weighing plates 1, two weighing plate groups (A group and B group) are connected through the transverse hinges 112, two movable large-piece transportation vehicle weighing systems 100 are manufactured, and the two movable large-piece transportation vehicle weighing systems 100 are arranged according to the distance between two rows of tires of the large-piece transportation vehicle 200 to be weighed;

step two: weighing and assigning standard load:

under the same topography condition after the assembly in the first step is completed, respectively carrying out weighing assignment on a plurality of different standard loads on each weighing plate 1;

step three: verification or calibration:

as shown in fig. 10, a portal-type reaction force device 301 of a load measuring instrument 300 for verification or calibration (see patent 202221607614.2 of chinese utility model: a portal-type large scale verification device) is installed on the calibration installation hole 113 of each weighing plate 1, the rod members of the reaction force device 301 are locked on the frame bottom plate 11 of the weighing plate 1, and the beam is adjusted to be horizontal by using nuts as indicated by a level meter; a universal adjusting bottom plate is placed on the weighing plate 1, and a ball head mechanism is used for adjusting the base to be in a horizontal state in combination with the indication of a level meter;

the standard load unit 302 of the load measuring instrument 300 is installed, the standard load unit 302 is used for carrying out full-range standard load assignment on each weighing plate according to a plurality of test points, and then, one-time full-range weighing, repeated (if necessary, offset load can be additionally contained) and other verification or calibration are carried out, so that the weighing error is ensured to be within the maximum allowable error range;

step four: weighing a wheel axle:

as shown in fig. 11, after the standard load unit 302 is removed, the large transport vehicle 200 is stably driven over the two built weighing systems 100, so that all axles pass through the weighing module 12 at least once, weighing data of axle loads and total mass of the vehicle are obtained from the weighing data processor of the circuit module, and are displayed by the management equipment, and the management equipment uploads information such as vehicle license plate information, large cargo information, weighing data, weighing time, weighing place and the like to the traffic management cloud platform in real time for data analysis and processing.

The second way is: specific gravity method one (namely an ABA weighing method), as shown in fig. 13, includes the following steps:

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

the arrangement mode mainly comprises two modes: firstly, presetting an arrangement scheme in a software management system in advance according to the information such as the length, the width, the number of axles, the number of lines and the like of the common large-scale transportation vehicle 200 in road transportation, and calling the arrangement scheme conforming to the current large-scale transportation vehicle 200 from an arrangement scheme library; secondly, when the software management system does not comprise the arrangement scheme of the currently-called large transport vehicle 200, the arrangement can be carried out on site according to actual conditions, and if necessary, the arrangement scheme can be newly added into the software management system scheme library. (if no software management system exists, the information of the length, the width, the number of axles, the number of lines and the like of the vehicles can be obtained manually, and the arrangement scheme is carried out), the number of the weighing plates 1 is reasonably arranged, the weighing plates 1 and the slope guiding plates 2 are connected through the buckling devices 111 of the weighing plates 1, two weighing plate groups (A group and B group) are connected through the transverse hinges 112, two movable large-piece transportation vehicle weighing systems 100 are manufactured, and the two movable large-piece transportation vehicle weighing systems 100 are arranged according to the distance between two rows of tires of the large-piece transportation vehicle 200 to be weighed;

step two: weighing and assigning standard load:

under the same topography condition after the assembly of the step one is completed, a plurality of different standard load weighing assignments are firstly carried out on each weighing plate 1.

Step three: first assay or calibration (here A1):

as shown in fig. 10, a portal-type reaction force device 301 of a load measuring instrument 300 for verification or calibration (see patent 202221607614.2 of chinese utility model: a portal-type large scale verification device) is installed on the calibration installation hole 113 of each weighing plate 1, the rod members of the reaction force device 301 are locked on the frame bottom plate 11 of the weighing plate 1, and the beam is adjusted to be horizontal by using nuts as indicated by a level meter; a universal adjusting bottom plate is placed on the weighing plate 1, and a ball head mechanism is used for adjusting the base to be in a horizontal state in combination with the indication of a level meter;

the standard load unit 302 of the load measuring instrument 300 is installed, the standard load unit 302 is used for carrying out full-range standard load assignment on each weighing plate according to a plurality of test points, and then, one-time full-range weighing, repeated (if necessary, offset load can be additionally contained) and other verification or calibration are carried out, so that the weighing error is ensured to be within the maximum allowable error range;

step four: axle weighing (here B):

as shown in fig. 11, after the standard load unit 302 is removed, the large transport vehicle 200 is stably driven over the two built weighing systems 100, so that all the axles pass through the weighing module 12 at least once, and weighing data of axle loads and total mass of the vehicle and the cargo are obtained from the weighing data processor of the circuit module;

step five: second assay or calibration (here A2):

repeating the third step, and carrying out full-range weighing and repeatability verification or calibration on each weighing plate 1 by using the standard load unit 302 to verify the weighing accuracy of the weighing plates 1;

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, the weighing data in the fourth step are the actual mass data of the large-sized transportation vehicle;

if the verification or calibration result in the fifth step and the verification or calibration result in the third step exceed the maximum tolerance range, checking the installation state of the weighing plate 1 and whether the transportation vehicle 200 runs abnormally when passing through the weighing plate 1, repeating the third step until the verification or calibration result in the fifth step and the third step meets the requirements, wherein the weighing data in the fourth step is the actual quality data of the large transportation vehicle, and displaying the actual quality data through the management equipment, and uploading the vehicle license plate information, the large cargo information, the weighing data, the weighing time, the weighing place and other information to the traffic management cloud platform in real time by the management equipment for data analysis and processing.

Third mode: specific gravity method two (namely ABBA weighing method), as shown in figure 14, comprises the following steps:

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

the arrangement mode mainly comprises two modes: firstly, presetting an arrangement scheme in a software management system in advance according to the information such as the length, the width, the number of axles, the number of lines and the like of the common large-scale transportation vehicle 200 in road transportation, and calling the arrangement scheme conforming to the current large-scale transportation vehicle 200 from an arrangement scheme library; secondly, when the software management system does not comprise the arrangement scheme of the currently-called large transport vehicle 200, the arrangement can be carried out on site according to actual conditions, and if necessary, the arrangement scheme can be newly added into the software management system scheme library. (if no software management system exists, the information of the length, the width, the number of axles, the number of lines and the like of the vehicles can be obtained manually, and the arrangement scheme is carried out), the number of the weighing plates 1 is reasonably arranged, the weighing plates 1 and the slope guiding plates 2 are connected through the buckling devices 111 of the weighing plates 1, two weighing plate groups (A group and B group) are connected through the transverse hinges 112, two movable large-piece transportation vehicle weighing systems 100 are manufactured, and the two movable large-piece transportation vehicle weighing systems 100 are arranged according to the distance between two rows of tires of the large-piece transportation vehicle 200 to be weighed;

step S2: weighing and assigning standard load:

under the same topography condition after the assembly of the step one is completed, a plurality of different standard load weighing assignments are firstly carried out on each weighing plate 1.

Step S3: first assay or calibration (here A1):

as shown in fig. 10, a portal-type reaction force device 301 of a load measuring instrument 300 for verification or calibration (see patent 202221607614.2 of chinese utility model: a portal-type large scale verification device) is installed on the calibration installation hole 113 of each weighing plate 1, the rod members of the reaction force device 301 are locked on the frame bottom plate 11 of the weighing plate 1, and the beam is adjusted to be horizontal by using nuts as indicated by a level meter; a universal adjusting bottom plate is placed on the weighing plate 1, and a ball head mechanism is used for adjusting the base to be in a horizontal state in combination with the indication of a level meter;

the standard load unit 302 of the load measuring instrument 300 is installed, the standard load unit 302 is used for carrying out full-range standard load assignment on each weighing plate according to a plurality of test points, and then, one-time full-range weighing, repeated (if necessary, offset load can be additionally contained) and other verification or calibration are carried out, so that the weighing error is ensured to be within the maximum allowable error range;

step S4: first wheel axle weighing (here B1):

as shown in fig. 11, after the standard load unit 302 is removed, the large transport vehicle 200 is stably driven over the two built weighing systems 100, so that all the axles pass through the weighing module 12 at least once, and weighing data of axle loads and total mass of the vehicle and the cargo are obtained from the weighing data processor of the circuit module;

step S5: secondary axle weighing (here B2):

the large transport vehicle 200 is stably driven on the two built weighing systems 100 for the second time, so that all axles at least pass through the primary weighing module 12, 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; if the verification or calibration result of step S5 and the verification or calibration result of step S4 exceed the maximum tolerance range, checking the installation state of the weighing plate 1 and whether the transportation vehicle 200 has abnormal driving when passing through the weighing plate 1, and repeating step S5 until the continuous two-time wheel axle weighing results of step S5 and 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 (here A2):

repeating the step S3, and carrying out full-range weighing and repeatability verification or calibration on each weighing plate 1 by using the standard load unit 302 to verify the weighing accuracy of the weighing plates 1;

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 mass data of the large-scale transportation vehicle;

if the verification or calibration result of step S6 and the verification or calibration result of step S3 exceed the maximum tolerance range, checking the installation state of the weighing plate 1 and whether the transportation vehicle 200 has abnormal driving when passing through the weighing plate 1, repeating step S3 until the verification or calibration results of step S6 and step S3 meet the requirements, and displaying the average value of the weighing data in step S4 and step S5 as the actual mass data of the large transportation vehicle by the management device, wherein the management device uploads the vehicle license plate information, the large cargo information, the weighing data, the weighing time, the weighing place and other information to the traffic management cloud platform in real time for data analysis and processing.

The utility model can weigh the maximum wheel weight of 20t, the axle weight of 40t, the total weight of the vehicle and the goods is not limited, the axle number and the wheel number are not limited, and the weighing accuracy is 2.5%; dynamic passing can be carried out, and the minimum speed is not less than 5km/h; the vehicle has portability, movable deployment and a maximum use road gradient of 3%, and is suitable for vehicles with various suspension types; the magnitude tracing can be performed, and accurate and reliable weighing data are ensured.

The weighing system can be temporarily installed on a firm and smooth highway or a spacious road, automatically weigh vehicles passing through a system area, acquire information such as axle load, total weight of the vehicles, axle number, axle type, axle base, license plate, time and speed and the like, detect overrun overload of a large transport vehicle and upload detection data to a management system or a cloud platform.

The above embodiments and drawings are not limited to the form, style or weighing accuracy of the present utility model, and any appropriate changes or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present utility model.

Claims (5)

1. A mobile large transport vehicle weighing system, characterized by: 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 slope guiding 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 data;

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

2. A mobile mass transit vehicle weighing system as defined in claim 1, wherein: in each weighing plate group, a plurality of guide plates are arranged between the plurality of weighing plates which are longitudinally connected at intervals.

3. A mobile mass transit vehicle weighing system as defined in claim 1, wherein: and the two side walls of the strain hole of the weighing module are welded with thin-wall metal cover plates.

4. A mobile mass transit vehicle weighing system as defined in claim 1, wherein: the bottom plate of the frame is made of alloy.

5. A mobile mass transit vehicle weighing system as defined in any one of claims 1 to 4, wherein: 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.