CN216559289U

CN216559289U - Dynamic weighing system

Info

Publication number: CN216559289U
Application number: CN202122425567.1U
Authority: CN
Inventors: 刘坤雷; 方睿
Original assignee: Beijing Wanji Technology Co Ltd
Current assignee: Beijing Wanji Technology Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-05-17
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a dynamic weighing system, which comprises a strip type weighing sensor, an installation base and a sealing structure, wherein the strip type weighing sensor is arranged on the installation base; the sealing structure is filled in a gap between the strip type weighing sensor and the mounting base; the sealing structure comprises a sealant layer and a foaming material layer with a closed cell structure. Therefore, the sealing structure can effectively improve the installation and use environment of the weighing sensor, reduce the risk of moisture entering and greatly prolong the service life of the sensor; meanwhile, the impact force of the volume change generated by the expansion with heat and contraction with cold on the pavement foundation on the sensor elastomer can be overcome, the accurate weighing of the sensor is realized, and the service life of the dynamic weighing system is ensured.

Description

Dynamic weighing system

Technical Field

The utility model relates to the field of dynamic weighing of road vehicles, in particular to a dynamic weighing system.

Background

At present, strip type weighing sensors are mostly adopted for weighing dynamic weighing products of domestic road vehicles. In the installation process of the strip type weighing sensor, the strip type weighing sensor is poured in a cement or asphalt road surface of a highway, and the weighing area part of the strip type weighing sensor is exposed out of the road surface; when a vehicle passes over the sensor, the wheels roll the surface of the sensor, the elastic body of the sensor generates strain, and the strain is detected to obtain the related weight information. In order to ensure that the process of stress and strain of the sensor is not interfered by the outside, the isolation layers are added around the sensor to separate the sensor from the pavement foundation and buffer the impact of the pavement foundation expansion with heat and contraction with cold on the sensor.

Generally, the strip type weighing cell has a good waterproof sealing effect by itself. However, since a large number of vehicles pass over the road surface every day, the strip sensor generates high-frequency alternating strain whenever a vehicle passes over the strip sensor, which poses a serious threat to the sealing performance of the sensor itself and, in the future, destroys the sealing performance of the sensor. Therefore, a phenomenon that moisture in the surrounding environment infiltrates into the sensor to cause the sensor to be damaged often occurs.

In addition, the road surface installation plate where the strip type weighing sensor is located is usually made of a cement concrete material, so that the road surface installation plate has certain water absorption. The water content of the road surface installation plate after rainfall is increased usually, and the whole 'expansion with heat and contraction with cold' effect change amplitude of the installation plate is aggravated when the temperature is changed sharply, so that the impact effect on the narrow strip sensor is aggravated, and the sensor is more seriously damaged.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a dynamic weighing system which can greatly improve the installation and use environment of a narrow strip sensor, enhance the sealing property of a weighing sensor and reduce the risk of impact of a pavement installation foundation on the sensor; meanwhile, the sealing structure part has the capacity of resisting sand and stones and the like embedded into the sealing layer on the road surface, the sealing effect is enhanced, and the service life of the dynamic weighing system is prolonged.

The utility model provides a dynamic weighing system, which comprises a bar-type weighing sensor, an installation base and a sealing structure, wherein the bar-type weighing sensor is arranged on the installation base;

the strip type weighing sensor is poured and fixed in a pavement installation foundation; the sealing structure is positioned in a gap between the side wall of the strip type weighing sensor and the mounting base, and comprises a sealing adhesive layer and a foaming material layer with a closed cell structure.

In one embodiment, the surface of the foaming material is covered by the sealant layer, that is, the foaming material layer is completely embedded in the sealant. It can be understood that when the surface of the foaming material layer is coated by the sealant material, the strip type weighing sensor is fully contacted with the sealant material in the sealing structure, so that the strip type weighing sensor is also coated by the sealant material, the sealing performance of the strip type weighing sensor is enhanced, and the possibility of damage of the sensor due to water inflow is reduced.

In one embodiment, the preparation material of the sealant layer comprises the silicone sealant, and the silicone sealant is soft in colloid texture, can be fully adhered to metal and other materials, and can change along with the stress strain of the elastomer of the sensor without changing the stress mode of the sensor.

In one embodiment, the preparation material of the foaming material layer comprises EVA foam. The EVA foam is internally provided with a closed bubble-shaped structure, has soft texture, and can be extruded and reduced in volume under the action of stress. Therefore, the sealant is arranged around the bar type weighing sensor as a part of the sealant, when the road surface mounting plate is impacted on the sensor due to volume change caused by the effect of expansion with heat and contraction with cold, namely, the soft foaming material firstly absorbs pressure to change the volume of the road surface mounting plate, and the influence of the mounting plates on the two sides on the impact of the bar type weighing sensor is reduced to the greatest extent.

In one embodiment, the EVA foam is in a sheet or granular shape.

In one embodiment, the thickness of the sheet-shaped EVA foam is 1-3 mm.

In one embodiment, the dynamic weighing system further comprises a sandable layer. The polishing layer is located on the upper surface of the strip type weighing sensor, so that the polishing layer and the road surface mounting plate can be polished together conveniently, and the stability of passing the vehicle is improved. Can polish layer cover strip formula weighing sensor and seal structure, can avoid unusual embedding seal structure such as road surface rubble gravel, protect seal structure's stability.

In one embodiment, the dynamic weighing system further comprises a waterproof layer located on the upper surface of the abradable layer and the mounting base. After the weighing sensor system is installed on a road, a painting tool is used for dipping waterproof paint, and a layer of waterproof film is uniformly coated on the upper surface of the polishing layer and the installation base to form a waterproof layer. When water is accumulated on the pavement, the water permeation into the installation foundation can be effectively reduced through the waterproof layer, so that the corrosion damage of the symmetrical weighing sensor with high water content of the installation plate is avoided, and particularly the frost heaving effect of the installation plate under the low-temperature condition in winter is avoided.

In one embodiment, the waterproof layer is made of waterproof paint or waterproof glue material.

In the dynamic weighing system provided by the utility model, the sealing structure is positioned in a gap between the side wall of the strip type weighing sensor and the mounting base, and the sealing structure comprises a sealing adhesive layer and a foaming material layer with a closed cell structure. Therefore, the sealing structure can effectively improve the installation and use environment of the weighing sensor, reduce the risk of moisture entering and greatly prolong the service life of the sensor; meanwhile, the impact force of the volume change generated by the expansion with heat and contraction with cold on the pavement foundation on the sensor elastomer can be overcome, and the accurate weighing of the sensor is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a dynamic weighing system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another dynamic weighing system provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another dynamic weighing system according to an embodiment of the present invention.

Reference numbers in the figures: the sensor comprises a 1-strip sensor, a 2-sealing structure, a 3-mounting base, a 4-polishable layer, a 5-waterproof layer, a 6-protective layer, a 21-sealing adhesive layer and a 22-foaming material layer.

Detailed Description

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

The present invention will be described in detail below by way of examples with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a dynamic weighing system according to an embodiment of the present invention. The dynamic weighing system comprises: the strip type weighing sensor comprises a strip type weighing sensor 1, an installation base 3 and a sealing structure 2. The strip type weighing sensor 1 is fixed in the installation foundation 3; the sealing structure 2 is located in a gap between the side wall of the bar-type weighing sensor 1 and the mounting base 3, and the sealing structure 2 comprises a sealing adhesive layer 21 and a foaming material layer 22 with a closed cell structure.

It can be understood that the sealant layer 21 can seal the strip-type weighing sensor, and by filling the soft foam material with the closed cell structure, when external impact force acts on the sensor, the soft foam material "absorbs" the impact force by changing the volume of the soft foam material, so that the impact of the mounting plates on two sides on the strip-type sensor is reduced to the greatest extent. Therefore, by the aid of the sealing structure, the installation and use environment of the weighing sensor can be effectively improved, the risk of moisture entering is reduced, and the service life of the sensor is greatly prolonged; meanwhile, the impact force and damage of the volume change generated by the expansion with heat and contraction with cold on the road surface base to the sensor elastomer can be overcome, and the accurate weighing and the service life of the sensor are ensured.

In the embodiment, the strip type weighing sensor 1 is in a long and narrow weighing sensor structure form, can be used as an independent weighing unit module and directly used for weighing, and when the strip type weighing sensor is installed on a road surface for use, in order to reduce the influence of large vibration generated by high-speed passing of vehicles on the sensor, the strip type weighing sensor 1 is poured and fixed in a road surface installation foundation 3; in addition, in order to enhance the anchoring capability of the sensor and the road surface foundation, a plurality of groups of anchor bars are generally arranged at the lower part of the strip type sensor, and the strip type weighing sensor is firmly fixed in the installation foundation 3 through the anchor bars.

After pouring is finished, a gap is cut or reserved around the strip type weighing sensor 1, a gap is formed between the gap and the installation foundation 3, the width of the gap is generally set to be 2-5 mm, and the depth of the gap is larger than the position of a strain hole in the side face of the strip type weighing sensor. The sealing structure 2 is arranged in the gap, and the sealing structure 2 comprises a sealing adhesive layer 21 and a soft foaming material layer 22 with a closed cell structure. The sealing structure improves the sealing performance of the strip type weighing sensor and buffers the impact of the outside on the strip type weighing sensor.

In one embodiment, the surface of the foam material layer is covered by the sealant layer, that is, the soft foam material is completely embedded inside the sealant material. It can be understood that when the surface of the soft foaming material is coated by the sealant material, the strip type weighing sensor can be fully contacted with the sealant material in the sealing structure and is coated by the sealant material, so that the sealing performance of the strip type weighing sensor is enhanced, and the possibility of damage of the sensor due to water inflow is reduced.

In one embodiment, the sealant layer 21 is made of a material including a silicone sealant. The organosilicon sealant is prepared by mixing two components, and is rapidly molded. The formed colloid is soft and good in toughness, can be fully bonded with materials such as metal and the like, and when the elastomer of the sensor is stressed and strained, the organic silicon sealant material can change along with the stress and strain of the elastomer, so that the stress size and direction of the strip type weighing sensor are not changed. In addition, because organosilicon sealant material mobility is good, can fill various complicacies or narrow and small space, consequently the gap between strip formula weighing sensor and the installation basis can be filled the occupation by organosilicon sealant material completely for inside outside moisture can't get into this dynamic weighing system, thereby reach waterproof sealed effect.

In one embodiment, the material for preparing the foaming material layer with the closed cell structure comprises EVA foam. It can be understood that the EVA foam is of a closed bubble-shaped structure, soft in texture and easy to compress under the action of force, and is a soft foam material with a closed cell structure. Therefore, the flexible foam material is arranged around the bar type weighing sensor as a part of the sealing structure, when the road surface mounting plate block is impacted on the sensor due to the volume change caused by the effect of expansion with heat and contraction with cold, namely, the flexible foam material firstly absorbs pressure to change the volume of the sensor, and the influence of the mounting plate blocks on the two sides on the impact of the bar type weighing sensor is reduced to the maximum extent. In other embodiments, other soft foaming materials, such as polyurethane sponge, pearl wool, etc., can be used to prepare the foaming material layer.

Referring to fig. 1, the soft foam material is EVA foam, and is in the form of a sheet with a thickness of 1-3 mm. The EVA foam is of a bubble-shaped structure, and the volume can respond to changes to a certain extent under the action of stress. Therefore, the impact on the mounting plate can be buffered, the organosilicon sealant material can deform, but the volume is maintained unchanged, the periphery of the mounting plate can be extruded, the pressure is absorbed by the soft foaming material inside the mounting plate to change the volume, the extrusion effect on the strip-type weighing sensor is reduced, and the normal stress effect of the sensor is maintained. Meanwhile, the phenomenon that the organosilicon sealant material overflows to the road surface after being pressed and loses the sealing effect after being repeatedly rolled by a vehicle is also reduced. Meanwhile, the EVA foam has good weather resistance and corrosion resistance, can still maintain the original material performance when used under outdoor conditions for a long time, particularly has higher surface temperature in summer, and can still maintain good material characteristics, thereby meeting the use requirements under the road working condition environment.

In one embodiment, the EVA foam is in a sheet or granular shape.

In the process of forming the sealing structure, if the selected soft foaming material is sheet-shaped, the gap is generally filled with the organosilicon sealant material, and after the gap is fully filled with the organosilicon sealant material, the soft foaming material is embedded into the organosilicon sealant body, so that the foaming material layer and the side surface of the strip-type weighing sensor are completely wrapped by the sealant material. In addition, if the selected soft foam material is granular, the sealant material 21 and the granular soft foam material are generally fully filled, and then the sealant material and the granular soft foam material are poured into a gap between the bar-type weighing sensor and the mounting structure to form the sealing structure.

As shown in FIG. 2, for the convenience of manufacturing and forming the sealing structure 2, the flexible foam material 22 is spherical foam particles having a particle diameter of 0.5 to 3 mm. During preparation, the spherical foam particles are added into the sealant material 21 and are fully mixed with the sealant material to be uniform, so that the spherical foam particles are fully wrapped by the sealant material 22 to form the sealing structure 2 integrally, and then the gap between the strip type weighing sensor 1 and the mounting plate 3 is poured and filled, thereby realizing the double effects of sealing and buffering.

In one embodiment, the thickness of the sheet-shaped soft foam material layer is 1-3 mm. In this embodiment, select for use the soft expanded material of slice (for example, EVA bubble cotton) that thickness is 1 ~ 3mm, can provide sufficient buffering space, also can not cause the extrusion for bar weighing sensor because of self too thick.

In one embodiment, the dynamic weighing system further comprises a grindable layer 4, and the grindable layer 4 is located on the upper surface of the strip type weighing sensor, so that the grindable layer 4 can be conveniently ground and leveled together with the road surface mounting plate, and the stability of the vehicle passing is improved. But the layer material of polishing adopts glass steel and the nylon board preparation that has certain intensity, covers strip formula weighing sensor and partial seal structure 2, can avoid the great rubble gravel in road surface unusual embedding seal structure such as gravel, maintains seal structure's integrality.

Referring to fig. 3, in one embodiment, the dynamic weighing system further includes a protective layer 6, the protective layer 6 covers the upper surface of the sealing structure, and the protective layer 6 is formed by an epoxy sealant. After the epoxy resin sealing colloid is cured and molded, the texture is hard, and the epoxy resin sealing colloid covers the upper part of the sealing structure 2, so that other hard foreign matters are prevented from being cut into the sealing structure. Considering the protection effect and the influence on weighing of the strip-type weighing sensor, the thickness of the protection layer 6 is generally set to be 5-20 mm, and the width is basically consistent with the gap width. When the surface protection layer 6 is damaged after long-time use, the surface protection layer can be directly maintained and processed on an installation site, the original protection layer 6 is removed, and a new protection layer is constructed and manufactured again.

In one embodiment, the dynamic weighing system further comprises a waterproof layer 5, after the dynamic weighing system is installed on site, the waterproof layer 5 is coated on the upper surfaces of the strip type weighing sensor 1 or the corresponding grinding layer 4 and the installation plate blocks on the two sides, and the waterproof layer 5 is formed by waterproof paint materials or waterproof glue materials. The waterproof layer can prevent water stored on the pavement mounting plate from permeating into the mounting plate, so that the protective performance of the dynamic weighing system is improved, and the long-term use stability of the equipment is enhanced.

The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A dynamic weighing system is characterized by comprising a bar type weighing sensor, a mounting base and a sealing structure;

the strip type weighing sensor is fixed in the installation foundation; the sealing structure is positioned in a gap between the side wall of the strip type weighing sensor and the mounting base, and comprises a sealing adhesive layer and a foaming material layer with a closed cell structure.

2. The dynamic weighing system of claim 1, wherein a surface of said foam layer is covered by said sealant layer.

3. The dynamic weighing system of claim 1, wherein the foam layer is made of a material comprising EVA foam.

4. The dynamic weighing system of claim 3, wherein the EVA foam is in the form of a sheet or a pellet.

5. The dynamic weighing system of claim 4, wherein the EVA foam sheet has a thickness of 1-3 mm.

6. The dynamic weighing system of claim 1, wherein the sealant layer is made from a material comprising a silicone sealant.

7. The dynamic weighing system of claim 1, further comprising: and the burnable layer is positioned on the upper surface of the strip type weighing sensor and covers the strip type weighing sensor and the sealing structure.

8. The dynamic weighing system of claim 7, wherein said sandable layer and an upper surface of said mounting base are formed with a water-resistant layer.

9. The dynamic weighing system of claim 8, wherein the waterproof layer is formed of a waterproof paint material or a waterproof glue material.