CN215573296U - Flat dynamic weighing sensor and dynamic flat scale for road overload control - Google Patents

Abstract

The utility model relates to a flat dynamic weighing sensor for road overload control and a dynamic flat scale.

Description

Flat dynamic weighing sensor and dynamic flat scale for road overload control

Technical Field

The utility model relates to the technical field of dynamic weighing equipment, in particular to a flat dynamic weighing sensor for road overload control and a dynamic flat scale.

Background

The weighing and force-measuring sensor has wide application in national economic production. A typical weighing load cell consists of an elastic body, a strain gauge adhered to a specific deformation position of the elastic body, and a peripheral circuit. The external force applied to the sensor causes the elastic body to deform, and stretching or shrinking deformation proportional to the stress is generated at a specific deformation position to cause the change of the electrical parameters of the strain gauge adhered to the position; the peripheral circuit detects the change degree of the electrical parameters of the strain gauge, then determines the magnitude of the external force applied to the sensor, and finally realizes the measurement of physical quantities such as force, weight and the like.

The overload phenomenon of road transport vehicles at home and abroad is very common, and the overload causes great harm to the service life of the vehicles, the service life of roads, traffic safety, transportation markets and the like, so that the overload of the vehicles needs to be effectively controlled, the overload problem must be fundamentally avoided, and weighing equipment is an important tool for monitoring the overload; the dynamic weighing sensor is mainly used for measuring the axle weight and the total weight of the vehicle in the driving process of the vehicle, and realizes the functions of automatically acquiring vehicle weight data to support traffic intelligent management planning, overload and overrun automatic detection, road weight-calculating charging and the like. But of course can be used for weighing other dynamic devices.

At present, the mainstream methods for dynamic weighing of automobiles comprise an indirect measurement method represented by a quartz narrow-strip weighing sensor array and a direct measurement method represented by a flat-plate automobile dynamic scale and a bent-plate automobile dynamic scale; the bent plate type sensor has the advantages that the height is low, the bent plate type sensor is composed of a frame and the bent plate type sensor, but the bent plate type sensor is large in bearing area, heavy in the whole structure, large in foundation excavation workload, poor in pavement adaptability, not convenient and fast to install, difficult in guarantee of installation accuracy and poor in consistency, and for example, the Chinese patent with the patent number of 201120346947X is provided; the narrow strip type sensor is narrow in width, the vehicle-mounted load application time of the sensor is extremely short during measurement, so that the measurement error is large, the spindle loss probability is high, the measurement weight of all sections from low speed to high speed of all vehicle types cannot be met, the requirements of the front road surface and the rear road surface of the sensor are extremely high, the road sealing time is long, the construction amount is large, and the maintenance cost is high.

In the prior art, patent document with publication number CN210464634U discloses an assembled narrow plate highway axle load sensor, which includes a sensor, a junction box, a bearing plate and a protection frame, and is characterized in that: the sensor is a strip-shaped structure formed by assembling a plurality of weighing sensors, the size of the sensor in the width direction is 300-350 mm, the size of the sensor in the length direction is 0.5-2.5 m, output signals of each weighing sensor are connected in parallel into a path through a junction box and are connected with a road weighing system through cables, a bearing plate is arranged at the upper end of the sensor, and a protective frame body covers the outer side of the sensor; the elastic body is of a double-shear beam type structure, and the elastic body is simple and reasonable in structure, small in processing difficulty and high in weighing precision.

Aiming at the problems of high processing difficulty and complex mounting structure of the weighing sensor, the improvement is still needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a flat dynamic weighing sensor for road overtaking and a dynamic flat scale, which have simple structure and small processing difficulty.

In order to solve the technical problems, the flat plate type dynamic weighing sensor for the road overload management comprises an elastic body and a plurality of strain gauges, wherein the elastic body comprises a supporting body and a strain body, the supporting body is convexly arranged at the top of the strain body so that the elastic body is arranged in a convex shape, the top surface of the supporting body and the bottom surface of the strain body are arranged in parallel, a plurality of strain holes are formed in the strain body, the strain gauges are arranged in the strain holes, strain grooves are formed in the bottom of the strain body, and the strain holes are arranged above the strain grooves.

Furthermore, every two strain holes are symmetrically arranged on two sides below the support body in a group.

A dynamic flat plate scale comprises the road overtaking flat plate type dynamic weighing sensor.

Further, developments dull and stereotyped balance still includes foundatin plate and loading board, the bottom of loading board links to each other with the supporter of elastomer is fixed, the cross-section of foundatin plate is character cut in bas plate, the foundatin plate internal fixation sets up many U shaped steel, the fixed mounting panel that sets up in top surface of U shaped steel, there is the fixed linking to each other of mounting panel in the bottom of straining body.

Furthermore, the upper end face of the bearing plate is provided with an anti-skidding groove.

Furthermore, the antiskid grooves are rhombic shallow grooves.

Furthermore, the anti-skid groove is a strip-shaped shallow groove.

Furthermore, 6 highway overload flat dynamic weighing sensors are arranged between the foundation plate and the bearing plate, and the 6 highway overload flat dynamic weighing sensors are symmetrically arranged in a group in pairs.

Furthermore, the length of the bearing plate is 2.5m to 4m, the width of the bearing plate is 0.8m to 1.2m, and output signals of the road overload flat-plate type dynamic weighing sensors are connected in parallel to form a path through the junction box.

Further, the bottom of foundatin plate sets up the end plate.

Further, U shaped steel and mounting panel, foundatin plate welded fastening, the loading board links to each other through first check bolt is fixed with the supporter, the mounting panel links to each other through second check bolt is fixed with the straining body.

The technical effects of the utility model are that: (1) compared with the prior art, the flat dynamic weighing sensor for treating the highway overload is characterized in that the elastic body is arranged in a convex shape, and the strain holes are formed in the upper side of the strain tank, so that the structure is reasonable, and the reaction is more sensitive; (2) the length of the bearing plate of the dynamic flat-plate scale is 2.5m to 4m, the width is 0.8m to 1.2m, the bearing area is large, the precision is high, the bearing plate can be used at different speeds of 0.5km/h to 120km/h, the field installation is convenient, the construction amount is small, and the maintenance is convenient; (3) the anti-slip groove is arranged, so that the influence of the slip of the vehicle tire on the measurement precision can be avoided; (4) the mounting plate is supported by the U-shaped steel, and the strength is higher under the same quality.

Drawings

The utility model is described in further detail below with reference to the drawings of the specification:

FIG. 1 is a schematic structural view of a dynamic flat-plate scale according to embodiment 2;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic structural view of a flat dynamic weighing cell for road overtaking in example 1;

FIG. 4 is a schematic structural view of a dynamic flat-plate scale in embodiment 3;

in the figure:

a foundation plate 1, an end plate 11, a fixing bolt 12,

a bearing plate 2, an anti-skid groove 21, a first anti-loose bolt 22,

the highway overload flat plate type weighing sensor 3, an elastic body 31, a supporting body 32, a strain body 33, a strain hole 34, a base plate mounting hole 35, a bearing plate mounting hole 36 and a strain groove 37,

the mounting plate 4, the U-shaped steel 5, the strain gauge 6 and the second check bolt 7.

Detailed Description

Example 1

As shown in fig. 3, the flat dynamic weighing sensor 3 for highway administration of the present embodiment includes an elastic body 31 and 2 strain gauges 6, the elastic body 31 includes a supporting body 32 and a strain body 33 which are integrally formed, the supporting body 32 is convexly disposed on the top of the strain body 33 to make the elastic body 31 form a convex shape, the top surface of the supporting body 32 and the bottom surface of the strain body 33 are disposed in parallel, 2 strain holes 34 are disposed on the strain body 33, the strain gauges 6 are disposed in the strain holes 34, a strain groove 37 is disposed at the bottom of the strain body 33, each strain hole 34 is disposed above the strain groove 37, the strain holes 34 and the strain groove 37 are obtained by machining, and the projection of the strain hole 34 completely falls into the strain groove 37.

Preferably, the strain holes 34 are symmetrically arranged on two sides below the support 32 in a group of two.

Preferably, carrier plate mounting holes 36 are provided on both sides of the support body 32.

Preferably, the base plate mounting holes 35 are provided on both sides of the strain body 33.

Example 2

A dynamic flat plate scale, as shown in fig. 1 and 2, comprises a road traffic flat plate type dynamic weighing sensor 3 of example 1.

Dynamic flat plate balance still includes foundatin plate 1 and loading board 2, and the up end of loading board 2 sets up anti-skidding groove 21, and anti-skidding groove 21 is the rhombus shallow slot for loading board 2 possesses anti-skidding function.

6 highway overload flat dynamic weighing sensors 3 are arranged between the foundation plate 1 and the bearing plate 2, and the 6 highway overload flat dynamic weighing sensors 3 are symmetrically arranged in pairs and in groups; the length of the bearing plate 2 can be set to be 2.5m to 4m according to needs, the width can be set to be 0.8m to 1.2m, output signals of the flat dynamic weighing sensors 3 for road overload control are connected in parallel into a path through a junction box, and the output signals are connected with a road weighing system through cables.

The bottom of loading board 2 cooperatees through first check bolt 22 and loading board mounting hole 36 for loading board 2 links to each other with the supporter 32 of elastomer 31 is fixed, foundatin plate 1's cross-section is character cut in baskets, 3U shaped steel 5 of fixed setting side by side in the foundatin plate 1, the fixed mounting panel 4 that sets up in top surface of U shaped steel 5, U shaped steel 5 and mounting panel 4, foundatin plate 1 welded fastening, cooperate with foundatin plate mounting hole 35 through second check bolt 7 in the bottom of straining body 33, make straining body 33 and mounting panel 4 fixed linking to each other. Four corners of the foundation plate 1 are provided with end plates 11, and the end plates are provided with fixing bolts 12 for fixing with the ground.

Example 3

A dynamic flat-plate scale, on the basis of embodiment 2, has the following modifications: the anti-skid grooves 21 on the bearing plate 2 are strip-shaped shallow grooves which are arranged in parallel and in parallel, so that the bearing plate 2 has an anti-skid function; and the bottom of foundatin plate 1 sets up 3 end plates 11, places in the both ends and the middle part of foundatin plate 1 in proper order, as shown in fig. 4.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the utility model are intended to be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a flat dynamic weighing sensor is used in super is controlled to highway, its characterized in that includes elastomer and a plurality of strainometer, the elastomer includes supporter and strain body, the supporter protrusion sets up so that the elastomer is the setting of type of protruding at the top of straining body, the top surface of supporter and the bottom surface parallel arrangement of strain body, set up a plurality of strain holes on the straining body, set up the strainometer in each strain hole, the bottom of straining body sets up strain tank, and each strain hole sets up the top in strain tank.

2. The flat plate type dynamic weighing sensor for road overtaking according to claim 1, wherein each strain hole is symmetrically arranged on two sides below the support body in a group of two strain holes.

3. A dynamic flat plate scale comprising the flat plate type dynamic weighing sensor for road overtaking according to claim 1 or 2.

4. The dynamic flat plate scale of claim 3, further comprising a base plate and a loading plate, wherein the bottom end of the loading plate is fixedly connected with the supporting body of the elastic body, the cross section of the base plate is concave, a plurality of U-shaped steels are fixedly arranged in the base plate, the top surface of each U-shaped steel is fixedly provided with an installation plate, and the bottom ends of the strain bodies are fixedly connected with the installation plate.

5. The dynamic flat plate balance of claim 4, wherein the upper end surface of the carrier plate is provided with an anti-slip groove.

6. The dynamic flat plate scale of claim 5, wherein said anti-slip grooves are diamond-shaped shallow grooves.

7. The dynamic flat plate scale of claim 5, wherein said anti-slip grooves are shallow elongated grooves.

8. The dynamic flat plate scale of claim 5 or 6, wherein 6 highway overload flat dynamic weighing sensors are arranged between the base plate and the bearing plate, and the 6 highway overload flat dynamic weighing sensors are symmetrically arranged in a group by two.

9. The dynamic flat plate scale of claim 7, wherein the length of the loading plate is 2.5m to 4m, the width of the loading plate is 0.8m to 1.2m, and the output signals of the road overload flat plate dynamic weighing sensors are connected in parallel into a single path through the junction box.

10. The dynamic flat plate scale of claim 8, wherein an end plate is disposed at a bottom end of the base plate.

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