CN112857544A - Automatic weighing transport vehicle - Google Patents
Automatic weighing transport vehicle Download PDFInfo
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- CN112857544A CN112857544A CN202110245210.7A CN202110245210A CN112857544A CN 112857544 A CN112857544 A CN 112857544A CN 202110245210 A CN202110245210 A CN 202110245210A CN 112857544 A CN112857544 A CN 112857544A
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- inclined plane
- transporter
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- 238000005303 weighing Methods 0.000 title claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to an automatic weighing transport vehicle, comprising: transport vechicle and pressure sensor, pressure sensor connects a communication host computer, communication host computer and a server wireless connection, pressure sensor includes: the casing, have a cavity in the casing, just casing one side opening, be equipped with the bottom on the opening, casing one side is equipped with first through-hole, be equipped with the connector in the first through-hole, be equipped with the diffusion silicon sensor on the connector, be first inclined plane between first bellied peak and the minimum, be the second inclined plane between the bellied peak of second and the minimum, just the second inclined plane with cavity lateral wall junction has interior chamfer. This automatic weighing transport vechicle can obtain transport vechicle's total weight in real time, and not only sensitivity is high, and the range is big moreover, can be applicable to the transport vechicle of various load specifications, and simple to operate need not to reequip or customize the whole car moreover, and is with low costs, easily uses widely.
Description
Technical Field
The invention relates to the field of transport vehicles, in particular to an automatic weighing transport vehicle.
Background
In recent years, the economic development of China is high, and the freight transportation volume is also rapidly increased. The extension of the four-way and eight-reach of the highway drives the rapid growth of the highway freight market. The department of transportation data shows that by 2019, road freight volume has reached 78%. The total amount of road freight reaches about 400 hundred million tons, and the freight turnover amount is about two hundred times of the transportation amount.
Road freight is fast and convenient, but astronomical digital traffic has great pressure on trucks and roads. The overload phenomenon is frequent, the safety of drivers and vehicles is seriously damaged, and the service life of roads/bridges is shortened. In contrast, it is a difficult and heavy burden of overload control; the system is embarrassing in the fields of intelligent city, intelligent logistics and the like.
The precise detection of cargo weight presupposes overload control. Considering the gross weight of the truck, the load of the current large truck can reach dozens of tons, one truck can appear in any corner nationwide, and the condition of the truck and the environment are extremely complex. According to this reality, there are several schemes to realize truck weighing:
1. fixing the wagon balance: the weighbridges are located around the freight yard and at the entrance to the main road. After loading the vehicle with the cargo, the vehicle is driven to a weighbridge for weighing.
This is currently the predominant weighing scheme in the freight market. The disadvantages are that: the device can be arranged only at a fixed place, and is very inconvenient. And real-time weighing cannot be achieved. In reality, queuing is often required due to the fact that the number of fixed wagon pounds is too small. And the fixed wagon balance is high in cost, and the charge per weighing is not low. The transportation cost is additionally increased.
2. Non-contact weight measurement: at present, other means such as ultrasonic waves and the like are mainly used for detecting the descending distance of a girder of a chassis of a truck under the pressure of goods or the micro deformation of the girder;
the greatest drawback of the non-contact solution is the insufficient precision. The reason is that there is a non-linearity between the directly detected distance or micro-deformation and the actual weight. The non-linear sources are closely related to the driving behavior of the driver, in addition to the material properties of the girder/steel plate. This results in uncontrollable weighing accuracy. The presence of uncontrollable artifacts makes the non-contact solution impractical and even impossible to market on a large scale.
3. Resistance strain gauge pressure sensor scheme: the pressure sensor is made of a resistance strain gauge, and the pressure of the chassis of the vehicle is directly detected. Although the scheme is feasible theoretically, the accuracy of the scheme is low due to the reasons that the sensitivity of the resistance strain gauge is too low, the effective range is narrow and the like, and the practical application cannot be met.
Disclosure of Invention
In order to solve the problem of real-time weighing of the existing freight vehicle, the technical scheme adopted by the invention is as follows: an automatic weighing transporter comprising: the transport vechicle and set up in pressure sensor on the transport vechicle, a communication host computer is connected to pressure sensor, communication host computer and a server wireless connection, pressure sensor includes: the casing, a cavity has in the casing, it has liquid to annotate in the cavity, just casing one side is equipped with the intercommunication the opening of cavity, be equipped with the bottom on the opening, casing one side is equipped with the intercommunication the first through-hole of cavity, be equipped with the connector in the first through-hole, be equipped with diffusion silicon sensor on the connector, the casing for the cavity wall of bottom opposite side has outside first arch and inside second arch, be first inclined plane between first bellied peak and the minimum, be the second inclined plane between bellied peak and the minimum of second, just the second inclined plane with cavity lateral wall department of meeting has interior chamfer.
In a further improvement, the first protrusion and the cavity are both circular.
In a further refinement, a diameter of the first projection is no greater than a diameter of the cavity.
In a further improvement, the highest point and the lowest point of the second bulge correspond to the highest point and the lowest point of the first bulge.
The improved structure is characterized in that a step structure is arranged on the edge of the bottom cover, and the bottom cover is in interference fit with the shell.
The further improvement is that the step structure of the bottom cover is sleeved with a sealing ring.
In a further improvement, the slope of the first inclined surface is not less than 8 ° and less than 90 °.
In a further improvement, the pressure sensor is disposed between the axle and a leaf spring on the axle.
In a further improvement, two pressure sensors are arranged between each leaf spring and the axle.
The invention has the beneficial effects that:
according to the automatic weighing transport vehicle provided by the invention, the pressure sensor is arranged between each steel plate spring and the axle, so that the total weight of the transport vehicle can be obtained in real time. Meanwhile, the pressure sensor redesigned based on the diffused silicon sensor is high in sensitivity, large in measuring range, suitable for transport vehicles with various loading specifications, convenient to install, low in cost and easy to popularize and use, and the whole transport vehicle does not need to be modified or customized.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the automatic weighing transporter of the present invention;
FIG. 2 is a schematic view of the pressure sensor mounting location of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic diagram of the external structure of the pressure sensor of the present invention;
fig. 5 is a schematic diagram of the pressure sensor structure of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
In the description of the invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
Example one
As shown in fig. 1 to 5, the present invention provides an automatic weighing transporter, including: transport vechicle 200 and set up in pressure sensor 100 on the transport vechicle 200, pressure sensor 100 connects a communication host computer, communication host computer and a server wireless connection, pressure sensor 100 includes: the casing comprises a casing 1, a cavity 11 is arranged in the casing 1, liquid is injected in the cavity 11, the liquid can adopt silicon oil, an opening communicated with the cavity 11 is arranged on one side of the casing 1, the opening is matched with the cavity in size, a bottom cover 2 is arranged on the opening and used for sealing the cavity, a first through hole 12 communicated with the cavity 11 is arranged on one side of the casing 1, a connector 13 is arranged in the first through hole 12, the connector not only achieves the purpose of sealing the first through hole, but also is provided with a diffused silicon sensor on the cavity end of the connector 13, the casing 1 is provided with an outward first bulge 14 and an inward second bulge 16 relative to the cavity wall on one side of the bottom cover 2, a first inclined plane 15 is formed between the highest point and the lowest point of the first bulge 14, and a second inclined plane 17 is formed between the highest point and the lowest point of the second bulge 16, and the joint of the second inclined surface 17 and the side wall of the cavity is provided with an inner chamfer 18.
Specifically, the pressure sensor in this embodiment is connected to a transmitter, the transmitter is connected to a communication host, the communication host has a network communication module, and is remotely connected to a server through the network communication module, and the server is connected to corresponding mobile terminal equipment or fixed equipment, and is used for displaying, managing, and early warning data measured by the pressure sensor.
The transmitter is used for amplifying, shaping and converting a weak electric signal sent by the pressure sensor into a digital signal in a format compatible with a finished automobile communication system, and transmitting the digital signal to a communication host through a finished automobile communication cable network.
The communication host is used for regularly inquiring and reading pressure values sent by all transmitters of the whole vehicle, calculating the weight value of the whole vehicle after processing, sending the weight value to the network communication module and uploading the weight value to the server through the public mobile communication network; also uploaded together with the weight value are other relevant information of the vehicle such as license plate number, position, speed and the like. Meanwhile, the communication host also measures the vehicle unbalance loading amount through the value of each sensor, uploads the unbalance loading amount to the server, and warns a driver in advance, so that the driving safety of the freight vehicle is greatly improved.
The server is used for regularly reading and collecting the load capacity and other necessary information of each vehicle in the system according to the time specified by the communication protocol and storing the load capacity and other necessary information in a system database. And then pushing the information to terminals such as registered mobile phones/management platforms/remote display screens and the like in the system according to the requirement.
The whole vehicle communication system adopts a communication protocol which accords with industrial specifications and vehicle international standards, and each pressure sensor and each transmitter are connected into a whole by a cable wired network. In this communication system, the communication master is in the master position and the pressure sensors and transducers are in the slave position. Each pressure sensor transmitter has a unique slave address of the vehicle, so that the weight sensor transmitter can be identified by the host computer, inquired and transmitted with a weight value.
The whole vehicle communication cable system adopts a grouped cable scheme, avoids vehicle type limitation and can be self-adaptive to various vehicle types; and a master-slave combined communication scheme is used, each slave machine is equal in position, and the number of the slave machines can be expanded at any time according to needs.
According to the automatic weighing transport vehicle provided by the invention, the pressure sensor is arranged between each steel plate spring and the axle, so that the total weight of the transport vehicle can be obtained in real time. Meanwhile, the pressure sensor redesigned based on the diffused silicon sensor is high in sensitivity, large in measuring range, suitable for transport vehicles with various loading specifications, convenient to install, low in cost and easy to popularize and use, and the whole transport vehicle does not need to be modified or customized.
According to the automatic weighing transport vehicle provided by the invention, the edge of the part of the bulge of the outer surface of the pressure sensor for bearing the pressure is an inclined surface, when the pressure sensor is pressed, the stress of the bulge is dispersed to the periphery, and compared with the bulge with a right angle edge, the bulge can bear larger pressure and cannot be torn at the bulge edge caused by stress accumulation. Meanwhile, due to the design of the first inclined plane, the measuring range of the pressure sensor is greatly improved under the condition of unchanged size. The arrangement of the second inclined plane improves the sensitivity of the pressure sensor. And the joint of the cavity and the second inclined plane adopts an inner chamfer design, so that the phenomenon that the cavity is torn due to stress concentration at a right angle or an acute angle when the cavity is pressed is avoided, and the measuring range and the service life of the pressure sensor are further improved. On the premise of the same size, the pressure sensor has higher measuring range and sensitivity due to the first inclined plane, the second inclined plane and the inner chamfer.
In a further improvement, the first protrusion 14 and the cavity 11 are both circular.
In a further improvement, the diameter of the first protrusion 14 is not greater than the diameter of the cavity 11.
In a further improvement, the highest point and the lowest point of the second protrusion 16 correspond to the highest point and the lowest point of the first protrusion 14.
In a further improvement, the slope of the first inclined surface is not less than 8 ° and less than 90 °. When the gradient of the first inclined plane is lower than 8 degrees, the maximum measuring range of the sensor cannot meet the weighing requirement of the lowest load weight of the freight truck. When the gradient reaches 90 degrees, the shearing force applied to the bottom end of the first inclined plane is increased along with the increase of the pressure applied to the pressure sensor, and in order to meet the requirement of the corresponding measuring range, the strength and toughness of the material of the sensor are required to be high, so that the measuring range of the sensor cannot be large while the cost is increased.
As shown in fig. 2, the pressure sensor 100 is further modified to be disposed between the axle 210 and a leaf spring 220 on the axle 210.
As shown in fig. 3, in a further modification, two pressure sensors 100 are disposed between each leaf spring 220 and the axle 210.
Example two
As shown in fig. 1 to 5, the present invention provides an automatic weighing transporter, including: transport vechicle 200 and set up in pressure sensor 100 on the transport vechicle 200, pressure sensor 100 connects a communication host computer, communication host computer and a server wireless connection, pressure sensor 100 includes: the shell body 1, a cavity 11 is arranged in the shell body 1, liquid is injected in the cavity 11, the liquid can adopt silicon oil, an opening communicated with the cavity 11 is arranged on one side of the shell body 1, the opening is matched with the cavity in size, a bottom cover 2 is arranged on the opening and used for sealing the cavity, a step structure 21 is arranged on the edge of the bottom cover 2, correspondingly, a step structure on the shell body matched with the step structure 21 is also arranged on the edge of the opening, the bottom cover 2 is in interference fit with the shell body 1, a first through hole 12 communicated with the cavity 11 is arranged on one side of the shell body 1, a connector 13 is arranged in the first through hole 12, the connector not only achieves the purpose of sealing the first through hole, meanwhile, a diffused silicon sensor is arranged on the cavity end of the connector 13, the shell body 1 is provided with an outward first bulge 14 and an inward second bulge 16 relative to the cavity wall on one side of the bottom cover 2, a first inclined plane 15 is formed between the highest point and the lowest point of the first bulge 14, a second inclined plane 17 is formed between the highest point and the lowest point of the second bulge 16, and an inner chamfer 18 is arranged at the joint of the second inclined plane 17 and the side wall of the cavity.
According to the pressure sensor, the bottom cover and the shell are matched in a step structure and are installed in an interference fit mode, so that the sealing performance of the structure of the bottom cover and the shell is greatly improved, the measuring range of the pressure sensor is further improved, and the use stability of the pressure sensor is improved; meanwhile, the seam is not required to be welded by kilowatt-level welding equipment, and only low-power welding equipment is required to weld.
This pressure sensor is the inclined plane because of the surface is used for bearing the partial bellied edge of pressure, and when the pressurized, bellied atress is dispersed all around, compares in the arch of edge right angle, can bear bigger pressure and can not stress the tearing of the protruding edge that the gathering leads to. Meanwhile, due to the design of the first inclined plane, the pressure sensor greatly improves the measuring range under the condition of unchanged size, and can be suitable for the transportation of heavy-duty trucks.
Moreover, it is found through experiments that the larger the angle of the first inclined plane 15, the smaller the overall deformation amount after being pressed, i.e. when the inclined plane is vertical (90 degrees), the deformation amount is the smallest, and thus it is proved that the inclined plane smaller than 90 degrees can improve the sensitivity of the pressure sensor.
In a further improvement, the first protrusion 14 and the cavity 11 are both circular.
In a further improvement, the diameter of the first protrusion 14 is not greater than the diameter of the cavity 11.
In a further improvement, the highest point and the lowest point of the second protrusion 16 correspond to the highest point and the lowest point of the first protrusion 14.
In a further improvement, the step structure 21 of the bottom cover 2 is sleeved with a sealing ring 22. Because of the interference fit of the bottom cover and the sealing ring, the seam of the bottom cover does not need to be welded, and the high-pressure sealing requirement can be met.
In a further improvement, the slope of the first inclined surface is not less than 8 ° and less than 90 °. When the gradient of the first inclined plane is lower than 8 degrees, the maximum measuring range of the sensor cannot meet the weighing requirement of the lowest load weight of the freight truck. When the gradient reaches 90 degrees, the shearing force applied to the bottom end of the first inclined plane is increased along with the increase of the pressure applied to the pressure sensor, and in order to meet the requirement of the corresponding measuring range, the strength and toughness of the material of the sensor are required to be high, so that the measuring range of the sensor cannot be large while the cost is increased.
Through the setting on first inclined plane and second inclined plane for the casing that the cavity corresponds the department is thin more to the edge, and then even if pressure has when less change, it still has corresponding deformation, thereby has improved this pressure sensor's sensitivity greatly.
As shown in fig. 2, the pressure sensor 100 is further modified to be disposed between the axle 210 and a leaf spring 220 on the axle 210.
As shown in fig. 3, in a further modification, two pressure sensors 100 are disposed between each leaf spring 220 and the axle 210.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. An automatic weighing transport vehicle, comprising: the transport vechicle and set up in pressure sensor on the transport vechicle, a communication host computer is connected to pressure sensor, communication host computer and a server wireless connection, pressure sensor includes: the casing, a cavity has in the casing, it has liquid to annotate in the cavity, just casing one side is equipped with the intercommunication the opening of cavity, be equipped with the bottom on the opening, casing one side is equipped with the intercommunication the first through-hole of cavity, be equipped with the connector in the first through-hole, be equipped with diffusion silicon sensor on the connector, the casing for the cavity wall of bottom opposite side has outside first arch and inside second arch, be first inclined plane between first bellied peak and the minimum, be the second inclined plane between bellied peak and the minimum of second, just the second inclined plane with cavity lateral wall department of meeting has interior chamfer.
2. The automated weighing transporter of claim 1, wherein the first protrusion and the cavity are both circular.
3. The automated weighing transporter of claim 2, wherein the diameter of the first protrusion is no greater than the diameter of the cavity.
4. The automated weighing transporter of claim 1, wherein the highest point and the lowest point of the second protrusion correspond to the highest point and the lowest point of the first protrusion.
5. The automated weighing transporter of claim 1, wherein the bottom cover edge is provided with a step structure and the bottom cover is in interference fit with the housing.
6. The automated weighing transport vehicle of claim 5, wherein the step structure of the bottom cover is sleeved with a sealing ring.
7. The automated weighing transporter of claim 1, wherein the slope of the first incline is no less than 8 ° and less than 90 °.
8. The automated weighing transporter of claim 1, wherein the pressure sensor is disposed between an axle and a leaf spring on the axle.
9. The automated weighing transporter of claim 8, wherein two of said pressure sensors are disposed between each of said leaf springs and said axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110245210.7A CN112857544A (en) | 2021-03-05 | 2021-03-05 | Automatic weighing transport vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110245210.7A CN112857544A (en) | 2021-03-05 | 2021-03-05 | Automatic weighing transport vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN112857544A true CN112857544A (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110245210.7A Pending CN112857544A (en) | 2021-03-05 | 2021-03-05 | Automatic weighing transport vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670486A (en) * | 2021-09-14 | 2021-11-19 | 王星星 | Weighing pressure sensor with high working efficiency |
| DE102022125618A1 (en) | 2022-10-05 | 2024-04-11 | Zf Cv Systems Europe Bv | Device for measuring a wheel or axle load |
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| US5410109A (en) * | 1993-04-22 | 1995-04-25 | Tarter; Ralph E. | Vehicle on-board weighing system and method |
| CN202373136U (en) * | 2011-11-30 | 2012-08-08 | 成都信息工程学院 | Real-time vehicle overload monitoring system based on Internet of things technology |
| CN106644011A (en) * | 2015-10-29 | 2017-05-10 | 上海朝辉压力仪器有限公司 | On-board weighing system |
| CN112146728A (en) * | 2020-10-26 | 2020-12-29 | 西安矽微电子科技有限公司 | Weighing sensor |
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2021
- 2021-03-05 CN CN202110245210.7A patent/CN112857544A/en active Pending
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|---|---|---|---|---|
| US5410109A (en) * | 1993-04-22 | 1995-04-25 | Tarter; Ralph E. | Vehicle on-board weighing system and method |
| CN202373136U (en) * | 2011-11-30 | 2012-08-08 | 成都信息工程学院 | Real-time vehicle overload monitoring system based on Internet of things technology |
| CN106644011A (en) * | 2015-10-29 | 2017-05-10 | 上海朝辉压力仪器有限公司 | On-board weighing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670486A (en) * | 2021-09-14 | 2021-11-19 | 王星星 | Weighing pressure sensor with high working efficiency |
| DE102022125618A1 (en) | 2022-10-05 | 2024-04-11 | Zf Cv Systems Europe Bv | Device for measuring a wheel or axle load |
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