CN106940216B - Embedded piezoelectric wheel shaft identifier suitable for dynamic weighing apparatus - Google Patents
Embedded piezoelectric wheel shaft identifier suitable for dynamic weighing apparatus Download PDFInfo
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- CN106940216B CN106940216B CN201710246369.4A CN201710246369A CN106940216B CN 106940216 B CN106940216 B CN 106940216B CN 201710246369 A CN201710246369 A CN 201710246369A CN 106940216 B CN106940216 B CN 106940216B
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- 238000005303 weighing Methods 0.000 title claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
- G01G19/035—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion using electrical weight-sensitive devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
Abstract
The invention belongs to the field of dynamic weighing devices of highway trucks, and particularly relates to an embedded piezoelectric wheel shaft identifier suitable for a dynamic weighing device. An embedded piezoelectric wheel axle identifier suitable for a dynamic weighing apparatus, which is characterized in that: the device comprises a long groove-shaped upper shell, a lower cover plate comprising four edges, a lower cover plate sealing gasket, a lower cover plate fixing screw, an elastic detection unit group, a piezoelectric unit group, a wheel axle identifier steel beam skeleton, a moisture absorbing device, a wheel axle identifier steel beam skeleton fixing screw and an MCU control circuit board. The invention has the advantages that after the core measuring element adopts the piezoelectric element, the sensitivity is improved, the interference is resisted, the service life of the piezoelectric element is prolonged by adopting the elastic piston, and the normal working time of the wheel axle identifier can be greatly improved by adopting the sealed cavity and the moisture absorbing equipment. The invention has simple structure and small volume, is suitable for embedding and mounting on the weighing platform of the weighing apparatus, and is convenient to mount and dismount.
Description
Technical Field
The invention belongs to the field of dynamic weighing devices of highway trucks, and particularly relates to an embedded piezoelectric wheel shaft identifier suitable for a dynamic weighing device.
Background
Previous truck scales were used to measure weight, which is a lever, car, stop, and weight, also known as a static weight mode. Along with the energy saving and efficiency improvement provided by the expressway management, the expressway passing efficiency is improved, and the dynamic weighing of the dynamic weighing device of the truck appears. The dynamic weighing system of the truck can realize dynamic weighing only after the axle weight, single wheel and double wheel information of the tested vehicle are obtained. Dynamic weighing of trucks is an important study subject of weighing in recent years in the weighing industry. Axle identifiers are an essential component of the dynamic weighing of a truck. Screening for suitable axle identifiers is the first step in achieving this objective. The axle identifier is suitable for being embedded in the weighing platform of the integral weighing scale, and mainly comprises a mechanical pressure type axle identifier, a mechanical switch type axle identifier and other axle identifiers. The mechanical pressure type wheel axle identifier has the advantages of large whole volume, complex structure and difficult processing, and is not suitable for selection. The mechanical switch type wheel axle identifier is not selected due to the problem of switching frequency reliability. The axle identifier which is sensitive, reliable and durable, short, small, light and thin is sought, and the piezoelectric device is aimed at. The piezoelectric device is characterized by dynamic signals, sensitive response, strong signals and strong anti-interference capability, and the wheel axle identifier manufactured by the piezoelectric device can meet the requirements of shortness, thinness and thinness, but the piezoelectric device is a ceramic component, the material characteristics are fragile and easy to damage, and how to improve. After the elastic detection unit is adopted, the piezoelectric element is clamped between elastic materials on two sides, and is not easy to damage; if a cylindrical elastic gasket is arranged at the lower part of the elastic detection unit group, the piston head of the elastic detection unit group is pressed down, and the piezoelectric element outputs a voltage signal. In order to prevent the piston heads of the elastic detection unit group from rotating and damaging the moving element, cylindrical positioning convex heads are arranged on the lower two sides of the cap peak of the piston heads, and positioning cylindrical positioning pits are arranged on the upper edges of blind holes of the steel beam frameworks of the corresponding axle identifiers. In order to prevent water vapor from eroding the voltage element or the circuit lead, after the steel beam framework of the tight pulley shaft identifier, the convex edge at the upper part of the piston cap peak is embedded into the annular groove around the piston through hole of the long groove-shaped upper shell, and the piston through hole at the upper part of the long groove-shaped upper shell is sealed; the bottom of the long groove-shaped upper shell is provided with a sealing gasket between the lower cover plate containing four edges and the long groove-shaped upper shell, and after the installation, the inner cavity of the piezoelectric wheel axle identifier is completely sealed, so that the piezoelectric wheel axle identifier is convenient to detach, detect, repair and replace.
Disclosure of Invention
According to the technical idea of the invention, an embedded piezoelectric wheel axle identifier suitable for a dynamic weighing apparatus is characterized in that: the device comprises a long groove-shaped upper shell, a lower cover plate comprising four edges, a lower cover plate sealing gasket, a lower cover plate fixing screw, an elastic detection unit group, a piezoelectric unit group, an axle identifier steel beam skeleton, a moisture absorbing device, an axle identifier steel beam skeleton fixing screw and an MCU control circuit board, wherein the elastic detection unit group, the piezoelectric unit group, the axle identifier steel beam skeleton, the moisture absorbing device, the axle identifier steel beam skeleton fixing screw and the MCU control circuit board are all arranged in the long groove-shaped upper shell, the lower cover plate sealing gasket is additionally arranged on the lower four edges of the long groove-shaped upper shell, the lower cover plate comprising four edges is covered, and the four edges of the lower cover plate are pressed on the lower cover plate sealing gasket and fixed by the lower cover plate fixing screw; the width of the steel beam framework of the wheel axle identifier is 85 mm, the height of the steel beam framework is 32.5 mm, the length of the steel beam framework is 394 mm, from one end of the steel beam framework, the steel beam framework is arranged along the central axis of the steel rail, namely the steel beam framework, and is perpendicular to the upper surface of the linear rail, each interval is 100 mm, a step concentric cylinder pit is arranged, and 4 step concentric cylinder pits are arranged in total on the whole steel beam framework; the upper edge of the stepped cylindrical pit is 50 mm, the lower edge is 32 mm, the pit depth of the upper edge is 5 mm, and the pit depth of the lower edge is 20 mm; a circular hole with the depth of 10 mm is arranged in the middle of the lower edge pit, the vertical steel beam framework is communicated with the lower edge pit by 4 mm, and an electric signal of the piezoelectric unit is led out from the circular hole; a positioning cylindrical pit with the depth of 2 millimeters is symmetrically arranged in the middle of the pit ladder along the central axis of the steel beam framework and the direction of passing through the cylindrical pit shaft according to the circle center; an elastic detection unit group is assembled in each stepped concentric cylindrical pit; from 97 mm at one end of the steel beam framework, along the central axis of the straight line rail, namely the steel beam framework, and vertical to the upper surface of the straight line rail, each interval is 200 mm, 26 mm at two sides of the central axis of the steel beam framework are respectively provided with a stepped concentric cylindrical hole, the upper edge of the concentric cylindrical hole is 18 mm, the depth is 19 mm, the middle edge is 10 mm, the depth is 5.5 mm, the lower edge is 22 mm, and the concentric cylindrical holes are positioning holes of the steel beam framework; in the middle of the lower surface of the steel beam framework, 26 mm along the two sides of the central axis of the steel beam framework are respectively provided with a nut with the depth of 20 mm, and the nut is a nut of a lower cover plate fixing bolt.
The embedded piezoelectric wheel axle identifier suitable for the dynamic weighing machine is characterized in that the embedded piezoelectric wheel axle identifier is formed by the following steps of; the elastic detection unit group comprises a piston, a piston cap peak, a piston lower cylinder and an elastic cylinder gasket, wherein the piston, the piston cap peak and the piston lower cylinder are integrated into a cylindrical elastic body, the diameter of the piston is 32 mm, the height of the piston is 5 mm, the annular diameter of the piston cap peak is 50 mm, the height of the piston cap peak is 4 mm, an annular convex edge and a convex edge are arranged in the direction of the piston cap peak, which is close to the piston, the height of the convex edge is 2 mm, the diameter of the piston lower cylinder is 32 mm, the height of the piston lower cylinder is 10 mm, and the thickness of the elastic cylinder gasket is 10 mm.
The embedded piezoelectric wheel axle identifier suitable for the dynamic weighing machine is characterized in that the embedded piezoelectric wheel axle identifier is formed by the following steps of; the length of the long groove-shaped upper shell is 1314 mm, the width of the long groove-shaped upper shell is 112 mm, the height of the long groove-shaped upper shell is 44.5 mm, a fixed connecting lug is welded at one end of the long groove, the width of the fixed connecting lug is 112 mm, the length of the fixed connecting lug is 50 mm, the thickness of the fixed connecting lug is 14 mm, the fixed connecting lug is 40 mm at two sides of the middle line of the length, an upper step and a lower step are respectively arranged in each of the fixed connecting lugs, the diameter of a step circle on each of the bolt through holes is 50 mm, the depth of each of the bolt through holes is 8 mm, and the diameter of each through hole is 12 mm; the left side of the other end of the long groove is 14 mm lower than the surface of the upper shell of the long groove, and a scarf joint connecting lug with the width of 40 mm and the length of 20 mm is welded; during installation, one side of the embedded piezoelectric wheel axle identifier is embedded with the connecting lug and embedded under the steel plate at one side of the weighing platform, the other side of the embedded piezoelectric wheel axle identifier is fixedly connected with the connecting lug, the fixing bolt penetrates through the through hole of the fixed connecting lug, the embedded piezoelectric wheel axle identifier is fixed in the nut at the inner layer of the weighing platform, and the bolt head of the fixing bolt is embedded into the upper step of the through hole to keep the surface of the weighing platform flat; from 50 mm at one end of the fixed connecting lug of the long groove-shaped upper shell, a piston through hole of 32 mm is arranged at each interval of 100 mm along the central axis of the long groove, and a total of 12 piston through holes are formed; an annular groove-concave ring is arranged around each piston through hole and on the groove surface, and the depth of the concave ring is 1.5 mm; from one end of the fixed connecting lug of the long groove-shaped upper shell, along the central axis of the long groove, at the positions of 26 millimeters on two sides of the central axis of the long groove at intervals of 200 millimeters, a steel beam skeleton positioning cylinder with a diameter of 17.6 millimeters and a height of 18 millimeters is respectively arranged, and a steel beam skeleton fixing nut with a diameter of 5.5 millimeters and a depth of 10 millimeters is arranged in the center of the cylinder.
The embedded piezoelectric wheel axle identifier suitable for the dynamic weighing machine is characterized in that the embedded piezoelectric wheel axle identifier is formed by the following steps of; after an elastic detection unit group, a piezoelectric unit group and an MCU control circuit board are arranged on a steel beam framework, the assembled steel beam framework is arranged in a long groove-shaped upper shell, a piston head of the elastic detection unit group penetrates through a piston through hole of the long groove-shaped upper shell, an annular convex ring of a piston cap peak of the elastic detection unit group enters into a concave ring around the through hole, and after a steel beam framework fixing bolt is screwed, the piston through hole is sealed; the lower cover plate sealing gasket is arranged on the lower four sides of the long groove-shaped upper shell, the lower cover plate comprising four-side step edges is covered, the four-side step edges of the lower cover plate are pressed on the lower cover plate sealing gasket, the lower cover plate fixing screws are screwed down, and the inside of the whole long groove-shaped upper shell, namely the inside of the embedded piezoelectric wheel axle identifier, is a sealing cavity.
The embedded piezoelectric wheel axle identifier suitable for the dynamic weighing machine is characterized in that the embedded piezoelectric wheel axle identifier is formed by the following steps of; all piezoelectric unit groups are electrically connected with an MCU control circuit board, and the MCU control circuit board is electrically connected with an external weighing system computer.
The working principle of the invention is briefly described as follows: in structure, the shaft identification sensor of the embedded piezoelectric wheel shaft identifier suitable for the dynamic weighing apparatus is sealed in an inner cavity, and all elastic detection unit groups, piezoelectric unit groups and MCU control circuit boards can be detached for detection. In the structure, all the elastic detection unit groups, the piezoelectric unit groups and the wheel axle identifier steel beam framework of the MCU control circuit board are installed in the long groove-shaped upper shell, after the sealing gasket of the upper cover plate and the lower cover plate is added, the lower cover plate containing four-side step edges is fixed on the long groove-shaped upper shell by the lower cover plate fixing screws, and a sealing cavity is formed in the long groove-shaped upper shell.
The working principle of the invention is the same as that of a common shaft identifier, a vehicle is driven in, the wheels are pressed in, the pressure measuring piston head of the elastic detection unit of the shaft identifier moves up and down, the lower cylinder of the piston compresses the piezoelectric unit, and the piezoelectric unit displays 1; after the wheel passes, the light receiving unit displays 0. The distance between the elastic detection units is 100 mm, so that the single wheel or the double wheels can be judged according to the number of the pistons of the elastic detection units pressed at the same time; the elastic detection unit calculates an axle every time the vehicle is rolled, and the accumulated axle number is the axle number of the vehicle. The width and rolling times of the wheels of the vehicle are recorded, whether the tested vehicle is single-wheel or double-wheel is judged, and the quantity of the axles of the vehicle is judged. The embedded piezoelectric wheel shaft identifier suitable for the dynamic weighing apparatus can accurately identify the vehicle type of a vehicle entering a lane, and can identify information such as a single shaft, a coupling, a single wheel, a double wheel and the like. The invention relates to an embedded piezoelectric wheel shaft identifier suitable for a dynamic weighing machine, which is used for accurately identifying vehicle information such as single axle, coupling, single wheel, double wheels and the like for vehicles entering a weighing platform of the weighing machine.
The invention has the advantages that after the core element adopts the piezoelectric element, the sensitivity is improved, the interference resistance is improved, the service life of the piezoelectric element is prolonged by adopting the elastic piston, and the normal working time of the axle identifier can be greatly improved by adopting the sealed cavity and adding the moisture absorbing equipment. The invention has simple structure and small volume, is suitable for embedding and mounting on the weighing platform of the weighing apparatus, and is convenient to mount and dismount.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embedded piezoelectric wheel axle identifier suitable for a dynamic weighing apparatus;
FIG. 2 is a schematic diagram of an elastic detection unit set of an embedded piezoelectric wheel axle identifier suitable for a dynamic weighing apparatus;
FIG. 3 is a schematic diagram of a steel beam skeleton structure of an axle identifier of an embedded piezoelectric axle identifier suitable for a dynamic weighing apparatus;
FIG. 4 is a diagram of the installation of an embedded piezoelectric wheel axle identifier for a dynamic weighing apparatus;
in the figure: 1. 1.1 parts of long groove-shaped upper shell, 1.2 parts of piston head through holes, 1.3 parts of piston head through holes and outer ring-shaped grooves, 1.4 parts of wheel axle identifier steel beam framework embedding connection lugs, 1.5 parts of wheel axle identifier steel beam framework fixing cylinders, 1.6 parts of wheel axle identifier steel beam framework fixing connection lugs, 1.7 parts of wheel axle identifier steel beam framework fixing cylinder nuts, 1.7 parts of long groove-shaped upper shell fixing bolts, 2 parts of elastic detection unit groups, 2.1 parts of piston heads, 2.2 parts of piston cap brim, 2.2.1 parts of piston cap brim and ring-shaped upper convex edges of piston cap brim, 2.2.2 parts of piston cap brim lower positioning pins, 2.3 parts of piston lower cylinders, 2.4, cylindrical elastic gaskets, 3, wheel axle identifier girder steel skeleton, 3.1, ladder concentric cylinder hole, 3.1.1, ladder concentric cylinder hole upper edge, 3.1.2, ladder concentric cylinder hole upper edge location cylinder hole, 3.2, piezoelectricity signal extraction hole, 3.4, girder steel skeleton's location hole, 4, piezoelectricity unit group, 6, wheel axle identifier girder steel skeleton set screw, 8, contain the lower apron of four sides ladder edge, 8.1, ladder edge, 8.2, lower apron sealing gasket, 9, lower apron set screw, 10, MCU control circuit board, 11, moisture absorption equipment, 12, sealed cable interface.
Detailed Description
An embedded piezoelectric wheel axle identifier suitable for a dynamic weighing apparatus manufactured by Shanxi corporation is taken as a specific embodiment, and is illustrated in the following figure 1 according to the specification: long groove-shaped upper housing dimensions: 1314 x 112 x 44.5 mm, 12 elastic detection unit groups were mounted inside. The elastic detection units are arranged at a distance of 100 mm from 50 mm at one end of the long groove-shaped upper shell, and the MCU control circuit board is arranged in the remaining space at the other end. The manufacturing flow is as follows: firstly, an elastic detection unit group and a piezoelectric unit group are arranged on a steel beam framework of the wheel axle identifier and are electrically connected with an MCU control circuit board, the MCU control circuit board is electrically connected with a computer, and the elastic detection unit group, the light emitter unit group and the light receiver unit group are simulated and tested to work cooperatively. After the test is normal, the axle identifier steel beam framework provided with the elastic detection unit group, the light emitter unit group and the light receiver unit group is arranged in the long groove-shaped upper shell, the axle identifier steel beam framework fixing screw is screwed, and the sealing condition between the annular convex edge of the piston cap peak of the elastic detection unit group and the annular groove around the piston hole of the groove-shaped upper shell is detected. And after all the elastic detection unit groups are qualified in sealing inspection, the MCU control circuit board and the moisture absorption equipment are fixedly arranged in the groove-shaped upper shell. And finally, adding a lower cover plate sealing gasket, covering a lower cover plate comprising four edges and ladder edges, screwing down lower cover plate fixing screws, and checking that the whole sealing is perfect, thereby successfully manufacturing the embedded piezoelectric wheel axle identifier suitable for the dynamic weighing apparatus. The piezoelectric wheel axle identifier can be embedded and installed on the whole weighing platform or independently installed in front of the weighing platform.
The invention has the advantages that after the core element adopts the piezoelectric element, the sensitivity is improved, the interference resistance is improved, the service life of the piezoelectric element is prolonged by adopting the elastic piston, and the normal working time of the axle identifier can be greatly improved by adopting the sealed cavity and adding the moisture absorbing equipment. The invention has simple structure and small volume, is suitable for embedding and mounting on the weighing platform of the weighing apparatus, and is convenient to mount and dismount.
Claims (1)
1. An embedded piezoelectric wheel axle identifier suitable for a dynamic weighing apparatus, which is characterized in that: the device comprises a long groove-shaped upper shell, a lower cover plate comprising four edges, a lower cover plate sealing gasket, a lower cover plate fixing screw, an elastic detection unit group, a piezoelectric unit group, an axle identifier steel beam skeleton, a moisture absorbing device, an axle identifier steel beam skeleton fixing screw and an MCU control circuit board, wherein the elastic detection unit group, the piezoelectric unit group, the axle identifier steel beam skeleton, the moisture absorbing device, the axle identifier steel beam skeleton fixing screw and the MCU control circuit board are all arranged in the long groove-shaped upper shell, the lower cover plate sealing gasket is additionally arranged on the lower four edges of the long groove-shaped upper shell, the lower cover plate comprising four edges is covered, and the four edges of the lower cover plate are pressed on the lower cover plate sealing gasket and fixed by the lower cover plate fixing screw; the width of the steel beam framework of the wheel axle identifier is 85 mm, the height of the steel beam framework is 32.5 mm, the length of the steel beam framework is 394 mm, from one end of the steel beam framework, the steel beam framework is arranged along the central axis of the steel rail, namely the steel beam framework, and is perpendicular to the upper surface of the linear rail, each interval is 100 mm, a step concentric cylinder pit is arranged, and 4 step concentric cylinder pits are arranged in total on the whole steel beam framework; the upper edge of the stepped cylindrical pit is 50 mm, the lower edge is 32 mm, the pit depth of the upper edge is 5 mm, and the pit depth of the lower edge is 20 mm; a circular hole with the depth of 10 mm is arranged in the middle of the lower edge pit, the vertical steel beam framework is communicated with the lower edge pit by 4 mm, and an electric signal of the piezoelectric unit is led out from the circular hole; a positioning cylindrical pit with the depth of 2 millimeters is symmetrically arranged in the middle of the pit ladder along the central axis of the steel beam framework and the direction of passing through the cylindrical pit shaft according to the circle center; an elastic detection unit group is assembled in each stepped concentric cylindrical pit; from 97 mm at one end of the steel beam framework, along the central axis of the straight line rail, namely the steel beam framework, and vertical to the upper surface of the straight line rail, each interval is 200 mm, 26 mm at two sides of the central axis of the steel beam framework are respectively provided with a stepped concentric cylindrical hole, the upper edge of the concentric cylindrical hole is 18 mm, the depth is 19 mm, the middle edge is 10 mm, the depth is 5.5 mm, the lower edge is 22 mm, and the concentric cylindrical holes are positioning holes of the steel beam framework; a nut with the depth of 20 mm is respectively arranged in the middle of the lower surface of the steel beam framework along 26 mm on two sides of the central axis of the steel beam framework, and the nut is a nut of a lower cover plate fixing bolt;
the elastic detection unit group comprises a piston, a piston cap peak, a piston lower cylinder and an elastic cylinder gasket, wherein the piston, the piston cap peak and the piston lower cylinder are integrated cylindrical elastic bodies, the diameter of the piston is 32 mm, the height of the piston is 5 mm, the annular diameter of the piston cap peak is 50 mm, the height of the piston cap peak is 4 mm, an annular convex edge and the height of the convex edge are 2 mm in the direction of the piston cap peak, the diameter of the piston lower cylinder is 32 mm, the height of the piston lower cylinder is 10 mm, and the thickness of the elastic cylinder gasket is 10 mm;
the length of the long groove-shaped upper shell is 1314 mm, the width of the long groove-shaped upper shell is 112 mm, the height of the long groove-shaped upper shell is 44.5 mm, a fixed connecting lug is welded at one end of the long groove, the width of the fixed connecting lug is 112 mm, the length of the fixed connecting lug is 50 mm, the thickness of the fixed connecting lug is 14 mm, the fixed connecting lug is 40 mm at two sides of the middle line of the length, an upper step and a lower step are respectively arranged in each of the fixed connecting lugs, the diameter of a step circle on each of the bolt through holes is 50 mm, the depth of each of the bolt through holes is 8 mm, and the diameter of each through hole is 12 mm; the left side of the other end of the long groove is 14 mm lower than the surface of the upper shell of the long groove, and a scarf joint connecting lug with the width of 40 mm and the length of 20 mm is welded; during installation, one side of the embedded piezoelectric wheel axle identifier is embedded with the connecting lug and embedded under the steel plate at one side of the weighing platform, the other side of the embedded piezoelectric wheel axle identifier is fixedly connected with the connecting lug, the fixing bolt penetrates through the through hole of the fixed connecting lug, the embedded piezoelectric wheel axle identifier is fixed in the nut at the inner layer of the weighing platform, and the bolt head of the fixing bolt is embedded into the upper step of the through hole to keep the surface of the weighing platform flat; from 50 mm at one end of the fixed connecting lug of the long groove-shaped upper shell, a piston through hole of 32 mm is arranged at each interval of 100 mm along the central axis of the long groove, and a total of 12 piston through holes are formed; an annular groove-concave ring is arranged around each piston through hole and on the groove surface, and the depth of the concave ring is 1.5 mm; from one end of the fixed connecting lug of the long groove-shaped upper shell, along the central axis of the long groove, at the positions of 26 millimeters on both sides of the central axis of the long groove at intervals of 200 millimeters, a steel beam skeleton positioning cylinder with a diameter of 17.6 millimeters and a height of 18 millimeters is respectively arranged, and a steel beam skeleton fixing nut with a diameter of 5.5 millimeters and a depth of 10 millimeters is arranged in the center of the cylinder;
after an elastic detection unit group, a piezoelectric unit group and an MCU control circuit board are arranged on a steel beam framework, the assembled steel beam framework is arranged in a long groove-shaped upper shell, a piston head of the elastic detection unit group penetrates through a piston through hole of the long groove-shaped upper shell, an annular convex ring of a piston cap peak of the elastic detection unit group enters into a concave ring around the through hole, and after a steel beam framework fixing bolt is screwed, the piston through hole is sealed; the lower four sides of the long groove-shaped upper shell are provided with a lower cover plate sealing gasket, the lower cover plate comprising four-side step edges is covered, the four-side step edges of the lower cover plate are pressed on the lower cover plate sealing gasket, a lower cover plate fixing screw is screwed down, and the inside of the whole long groove-shaped upper shell, namely the inside of the embedded piezoelectric wheel axle identifier, is a sealing cavity;
all piezoelectric unit groups are electrically connected with an MCU control circuit board, and the MCU control circuit board is electrically connected with an external weighing system computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710246369.4A CN106940216B (en) | 2017-04-15 | 2017-04-15 | Embedded piezoelectric wheel shaft identifier suitable for dynamic weighing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710246369.4A CN106940216B (en) | 2017-04-15 | 2017-04-15 | Embedded piezoelectric wheel shaft identifier suitable for dynamic weighing apparatus |
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| Publication Number | Publication Date |
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| CN106940216A CN106940216A (en) | 2017-07-11 |
| CN106940216B true CN106940216B (en) | 2023-12-26 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202171498U (en) * | 2011-07-20 | 2012-03-21 | 郑州恒科实业有限公司 | Dynamic vehicle weighing platform for single end embedding shaft metering apparatus |
| WO2013017768A1 (en) * | 2011-07-29 | 2013-02-07 | Sterela | Extra-flat piezoelectric detector and sensor for sensing the passage of travelling vehicles |
| CN205373849U (en) * | 2015-12-28 | 2016-07-06 | 山西国强科技发展有限责任公司 | Whole car developments meter of two embeddings axle recognizer is reset and is put circuit |
| CN105841785A (en) * | 2016-04-07 | 2016-08-10 | 杭州四方称重系统有限公司 | Vehicle type dynamic road vehicle automatic weighing apparatus |
| CN206038131U (en) * | 2016-08-18 | 2017-03-22 | 山西国强高科股份有限公司 | Dynamic whole balance weighing platform of front and back end embedding axle recognizer |
| CN207456590U (en) * | 2017-04-15 | 2018-06-05 | 山西国强高科股份有限公司 | A kind of embedded piezoelectricity Wheel axle identifier of suitable dynamic weight calculation weighing apparatus |
-
2017
- 2017-04-15 CN CN201710246369.4A patent/CN106940216B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202171498U (en) * | 2011-07-20 | 2012-03-21 | 郑州恒科实业有限公司 | Dynamic vehicle weighing platform for single end embedding shaft metering apparatus |
| WO2013017768A1 (en) * | 2011-07-29 | 2013-02-07 | Sterela | Extra-flat piezoelectric detector and sensor for sensing the passage of travelling vehicles |
| CN205373849U (en) * | 2015-12-28 | 2016-07-06 | 山西国强科技发展有限责任公司 | Whole car developments meter of two embeddings axle recognizer is reset and is put circuit |
| CN105841785A (en) * | 2016-04-07 | 2016-08-10 | 杭州四方称重系统有限公司 | Vehicle type dynamic road vehicle automatic weighing apparatus |
| CN206038131U (en) * | 2016-08-18 | 2017-03-22 | 山西国强高科股份有限公司 | Dynamic whole balance weighing platform of front and back end embedding axle recognizer |
| CN207456590U (en) * | 2017-04-15 | 2018-06-05 | 山西国强高科股份有限公司 | A kind of embedded piezoelectricity Wheel axle identifier of suitable dynamic weight calculation weighing apparatus |
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| CN106940216A (en) | 2017-07-11 |
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