CN214096312U

CN214096312U - High-precision real-time vehicle weighing system

Info

Publication number: CN214096312U
Application number: CN202022571949.0U
Authority: CN
Inventors: 陈海峰; 叶琳; 袁春宝
Original assignee: Iboc Measurement & Control Technology Suzhou Co ltd
Current assignee: Iboc Measurement & Control Technology Suzhou Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-08-31
Anticipated expiration: 2030-11-09

Abstract

A high-precision real-time weighing system for vehicles comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing device comprises a plurality of strain sensors; the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively; in an assembly state, the strain sensors are positioned on the axle and are arranged close to the bearing seats in a one-to-one correspondence manner; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle. Compared with the prior art, adopt the utility model discloses, install convenient, with low costs when installing additional, the sensing precision can improve tens of times.

Description

High-precision real-time vehicle weighing system

Technical Field

The utility model relates to a vehicle weighing technique, in particular to real-time weighing system of high accuracy vehicle.

Background

With the rapid development of the logistics industry, the research on the real-time weighing system of the vehicle is concerned. On the one hand, the current on-vehicle real-time weighing system adopts resistance strain sensor usually, and its precision is relatively poor, is more and more difficult to satisfy the demand of on-vehicle real-time weighing, especially measures rigid structure's deformation, and the precision problem is obvious. On the other hand, for the traditional vehicle-mounted real-time weighing system, a sensor is arranged between a carriage and a frame, one end of the sensor is fixed on a newly added part of the frame, and the other end of the sensor is suspended and used for supporting the carriage. Therefore, when the equipment is added, the whole carriage needs to be lifted. This approach has certain drawbacks. Firstly, lifting the carriage can damage the automobile structure, so that the gravity center of the automobile main body is raised, and potential safety hazards are caused; meanwhile, as an additional connecting piece, the sensor also changes the fixing mode and the fixing point of the carriage and the frame, so that the connection strength is easy to weaken, and the safety factor is further influenced. Secondly, adopt above-mentioned traditional on-vehicle real-time weighing system, to raise the carriage, need relatively large-scale hoisting apparatus, it is more to the requirement in place and erection equipment, and the security of erection equipment itself also requires highly to cause the cost to be high.

In view of this, how to design a real-time weighing system of vehicle, the precision is high and it is convenient to install the utility model discloses the subject of research.

SUMMERY OF THE UTILITY MODEL

The utility model provides a real-time weighing system of high accuracy vehicle, its purpose will realize that the high accuracy is convenient with the installation.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a high-precision real-time weighing system for a vehicle is used for weighing vehicle cargos, the vehicle is provided with at least two axles for bearing, and each axle is fixedly provided with two bearing seats for connecting a vehicle body main body; the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing device comprises a plurality of strain sensors; the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts which are distributed in the length direction of the metal plate; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively; in an assembly state, the strain sensors are positioned on the axle and are arranged close to the bearing seats in a one-to-one correspondence manner; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle.

The relevant content in the above technical solution is explained as follows:

1. in this scheme, all have the laminating region that the laminating corresponds the axletree on a supporting part and two location portions for location and support.

2. In this solution, the "axle" is usually also called "axle" and is connected to the vehicle body through a suspension, and wheels are mounted on both ends of the axle. The axle is used for bearing the load of the automobile and maintaining the normal running of the automobile on the road.

3. In the scheme, the control center can remotely control the real-time weighing information of the vehicle.

4. In this aspect, preferably, the upper surface of the main body of the metal plate has a bonding region; the metal plate is attached and positioned with the corresponding axle glue through the attaching area. The fit region is matched with the curved surface of the corresponding axle.

5. In this aspect, it is preferable that the strain sensor is positioned at a bottom portion of the axle circumferential surface in an assembled state.

6. In this embodiment, it is further preferable that, in the assembled state, the two positioning portions of each metal plate are respectively fastened to the corresponding axle by being sleeved with at least one hoop.

7. In the scheme, preferably, a through groove for the cable to pass through is formed on the lower surface of the supporting part of the metal plate; the lower surface of a positioning part of the metal plate is provided with a positioning groove for placing a circuit board, and the positioning groove is provided with a threading through hole for a cable to pass through. The structure is beneficial to the integration of components, and the space utilization rate is improved.

8. In this embodiment, preferably, the support portion and/or the positioning portion of the metal plate are provided with fixing through holes for pin fixing or screw fixing.

9. In this scheme, preferably, the signal transmission module includes a sensor junction box, and the sensor junction box is electrically connected to each strain sensor in the strain sensing device.

10. In this embodiment, preferably, the signal processing module includes a transmitter; the transmitter is a digital signal transmitter, the input end of the digital signal transmitter is electrically connected with the output end of the sensor junction box, and a digital signal output port for connecting a control center is arranged on the digital signal transmitter.

11. In this embodiment, as another preferred option, the signal processing module includes a transmitter; the transducer is an analog signal transducer, the input end of the analog signal transducer is electrically connected with the output end of the sensor junction box, and an analog signal output port for connecting an automobile load-bearing instrument is arranged on the analog signal transducer.

12. In this scheme, as preferred, the metal sheet is integrated into one piece's aluminum alloy plate or corrosion resistant plate, is favorable to reducing material cost and processing cost.

The utility model discloses a design principle and beneficial effect are:

the utility model provides a real-time weighing system of high accuracy vehicle can solve the low, the installation of the real-time weighing system precision of current vehicle convenient problem inadequately.

1. The real-time weighing system for the vehicle weighs by measuring the deformation of the axle of the vehicle, so that the strain sensor is positioned on the axle corresponding to the bearing seat. The installation is simple in operation, any structure of the vehicle body does not need to be changed, and the strength of the vehicle body is not lost, so that the real-time weighing system for the vehicle is suitable for installation during vehicle assembly and is also suitable for later-stage installation. When the device is additionally installed in the later stage, the operation is convenient and fast, and the operation cost is greatly reduced.

2. The utility model adopts the semiconductor strain sensor to replace the existing resistance strain sensor aiming at the measurement of the deformation of the axle, and can obviously improve the test precision; further, an applicable elastomer structure is specially designed, and the precision is further improved. The utility model provides a system makes sensitivity under test reach the real-time weighing system of traditional vehicle tens of times.

3. The fixed not only installation of strain sensor on the axletree is convenient, and is convenient for combine the viscose to connect and the staple bolt is connected, compares with prior art, and the reliability is high, and the security is high.

4. The utility model provides a vehicle weighing system can carry the control center that can realize remote control after adopting signal processing module to handle the signal, compares with prior art, does not need extra weighing instrument of special configuration, can effectively reduce equipment cost, can improve space utilization, and the data of still being convenient for do further control or mutual.

Drawings

Fig. 1 is a schematic perspective view of a strain sensor assembled on an axle according to an embodiment of the present invention;

fig. 2 is a bottom view of the strain sensor mounted on the axle in the embodiment of the present invention;

fig. 3 is a schematic perspective view of an elastomer metal plate of a strain sensor according to an embodiment of the present invention;

fig. 4 is a bottom view of an elastomer metal plate of a strain sensor in an embodiment of the present invention;

fig. 5 is a block diagram of a real-time weighing system for a vehicle according to an embodiment of the present invention;

fig. 6 is a block diagram of a real-time weighing system for a vehicle according to another embodiment of the present invention.

In the above drawings: 1. an axle; 2. a load bearing seat; 3. a metal plate; 4. a strain beam; 5. a support portion; 6. a positioning part; 7. a groove structure; 8. a through groove; 9. positioning a groove; 10. and a threading through hole.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

example (b): high-precision real-time vehicle weighing system

Referring to fig. 1 to 5, a high-precision real-time weighing system for a vehicle is used for weighing vehicle goods, wherein two axles 1 for bearing are arranged on the vehicle, and two bearing seats 2 for connecting a vehicle body are fixedly arranged on each axle 1; the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing means comprises four strain sensors.

As shown in fig. 3 and 4, the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate 3 serving as an elastic body, and a cable for electric signal output; in the present embodiment, the metal plate 3 is an integrally formed aluminum alloy plate. The main body of the metal plate 3 comprises a supporting part 5 and two positioning parts 6 which are distributed in the length direction of the metal plate 3; each positioning part 6 is fixedly connected with the supporting part 5 through a sheet-shaped strain beam 4; each strain beam 4 forms a groove structure 7 on the upper surface and the lower surface of the metal plate 3.

In the assembled state, as shown in fig. 1 and 2, the strain sensors are positioned on the axle 1 and are arranged close to the load-bearing seats 2 in a one-to-one correspondence, and preferably are arranged facing away from each other in the circumferential direction of the positioned axle 1, i.e. the strain sensors are positioned at the bottom of the circumferential surface of the axle 1. A supporting part 5 and two positioning parts 6 of the metal plate 3 main body are respectively arranged in contact with the corresponding axle 1; the groove direction of the groove structure 7 is perpendicular to the axial direction of the axle 1. In this embodiment, the two positioning portions 6 of each metal plate 3 are respectively fastened to the corresponding axle 1 through a hoop.

The upper surface of the main body of the metal plate 3 is provided with a bonding area; in the assembled state, the metal plate 3 is positioned by being attached to the corresponding axle 1 through the attaching region. In this embodiment, the attaching location is an adhesive bonding location.

In the present embodiment, as shown in fig. 3 and 4, a through slot 8 for a cable to pass through is opened on the lower surface of the supporting portion 5 of the metal plate 3; the lower surface of a positioning part 6 of the metal plate 3 is provided with a positioning groove 9 for placing a circuit board, and the positioning groove 9 is provided with a threading through hole 10 for a cable to pass through.

As shown in fig. 5, in the present embodiment, the signal transmission module includes a sensor junction box, and the sensor junction box is electrically connected to each strain sensor in the strain sensing device. In this embodiment, the signal processing module includes a transmitter, the transmitter is a digital signal transmitter, an input end of the digital signal transmitter is electrically connected to an output end of the sensor junction box, and the digital signal transmitter is provided with a digital signal output port for connecting to a control center. In this embodiment, the information processing output port is an RS485 port.

In the present embodiment, the method of mounting the strain sensor on the axle 1: first, the positioning parts 6 and the supporting parts 5 of the strain sensor are connected with the axle 1 in an adhesive manner, and then the two hoops are respectively and tightly sleeved on the two positioning parts 6 and the periphery of the corresponding axle 1.

Other embodiments and structural changes of the present invention are described below as follows:

1. in this embodiment, the metal plate is an integrally formed aluminum alloy plate, which is low in cost, but the present invention is not limited thereto, and other metal plates such as a stainless steel plate are easily understood and accepted by those skilled in the art.

2. In this embodiment, the laminating is regional for the plane setting, but the utility model discloses be not limited to this, the laminating region also can be with the curved surface matching setting of corresponding axletree 1. As will be readily understood and accepted by those skilled in the art.

3. In the above embodiment, in the assembled state, a hoop is sleeved on each positioning portion of the strain sensor and the periphery of the axle corresponding to the positioning portion. However, the present invention is not limited thereto. In an assembly state, each positioning part of the strain sensor and the periphery of the corresponding axle can be sleeved with a plurality of hoops. As would be readily understood and accepted by those skilled in the art.

4. In the above embodiment, the vehicle is provided with two axles, and correspondingly, the vehicle real-time weighing system includes four strain sensors therein, but the present invention is not limited thereto. Corresponding to vehicles with different numbers of bearing seats, strain sensors with corresponding numbers can be arranged in the bearing system so as to ensure the measuring accuracy. As would be readily understood and accepted by those skilled in the art.

5. In the above embodiment, the transmitter is a digital signal transmitter, an input end of the digital signal transmitter is electrically connected to an output end of the sensor junction box, and the digital signal transmitter is provided with a digital signal output port for connecting to a control center. However, the present invention is not limited thereto. The transmitter can also be an analog signal transmitter, the input end of the analog signal transmitter is electrically connected with the output end of the sensor junction box, and an analog signal output port for connecting an automobile load-bearing instrument is arranged on the analog signal transmitter, as shown in figure 6. As would be readily understood and accepted by those skilled in the art.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A high-precision real-time weighing system for a vehicle is used for weighing vehicle cargos, the vehicle is provided with at least two axles for bearing, and each axle is fixedly provided with two bearing seats for connecting a vehicle body main body; the method is characterized in that: the weighing system comprises a strain sensing device, a signal transmission module and a signal processing module; the strain sensing device comprises a plurality of strain sensors;

the strain sensor includes a semiconductor strain gauge serving as a conversion element, a metal plate serving as an elastic body, and a cable for electric signal output; the main body of the metal plate comprises a supporting part and two positioning parts which are distributed in the length direction of the metal plate; each positioning part is fixedly connected with the supporting part through a sheet-shaped strain beam; each strain beam enables the upper surface and the lower surface of the metal plate to form a groove structure respectively;

in an assembly state, the strain sensors are positioned on the axle and are arranged close to the bearing seats in a one-to-one correspondence manner; a supporting part and two positioning parts of the metal plate main body are respectively arranged in contact with the corresponding axle; the groove direction of the groove structure is perpendicular to the axial direction of the axle.

2. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: in the assembled state, the strain sensor is positioned at the bottom of the axle circumferential surface.

3. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: the upper surface of the main body of the metal plate is provided with a bonding area; the metal plate is attached and positioned with the corresponding axle glue through the attaching area.

4. A high accuracy real-time vehicle weighing system as recited in claim 3, wherein: the fit region is matched with the curved surface of the corresponding axle.

5. A high accuracy real-time vehicle weighing system as recited in claim 3, wherein: in an assembly state, the two positioning parts of each metal plate are respectively sleeved and fastened with the corresponding axle through at least one hoop.

6. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: a through groove for a cable to pass through is formed in the lower surface of the supporting part of the metal plate; the lower surface of a positioning part of the metal plate is provided with a positioning groove for placing a circuit board, and the positioning groove is provided with a threading through hole for a cable to pass through.

7. A high precision real-time vehicle weighing system as claimed in claim 1, wherein: the signal transmission module comprises a sensor junction box, and the sensor junction box is electrically connected with each strain sensor in the strain sensing device.

8. A high accuracy real-time vehicle weighing system as recited in claim 7, wherein: the signal processing module comprises a transmitter; the transmitter is a digital signal transmitter, the input end of the digital signal transmitter is electrically connected with the output end of the sensor junction box, and a digital signal output port for connecting a control center is arranged on the digital signal transmitter.

9. A high accuracy real-time vehicle weighing system as recited in claim 7, wherein: the signal processing module comprises a transmitter; the transducer is an analog signal transducer, the input end of the analog signal transducer is electrically connected with the output end of the sensor junction box, and an analog signal output port for connecting an automobile load-bearing instrument is arranged on the analog signal transducer.

10. A high accuracy real-time vehicle weighing system as claimed in any one of claims 1 to 9, wherein: the metal plate is an integrally formed aluminum alloy plate or a stainless steel plate.