CN214121389U - Dynamic load weight measuring instrument for multi-medium load-carrying vehicle - Google Patents

Abstract

The utility model relates to a vehicle load instrument technical field specifically discloses a multimedium load vehicle dynamic load weight-measuring appearance, including weighing pressure sensor, digital transmitter, digital acquisition treater, digital transmitter and management platform, wherein, weighing pressure sensor, digital transmitter, digital acquisition treater, digital transmitter and management platform connect gradually, the pressure conversion who will sense of weighing pressure sensor is voltage signal to export for digital transmitter, digital transmitter converts voltage signal into RS485 digital signal, and exports for digital acquisition treater, digital acquisition treater is with received RS485 digital signal, sends to management platform through digital transmitter. The utility model provides a multimedium load vehicle developments load check weighing instrument, simple structure, occupation space is little, can make the legal delivery of vehicle goods moreover, improves the life of vehicle, and manufacturing cost is also lower.

Description

Dynamic load weight measuring instrument for multi-medium load-carrying vehicle

Technical Field

The utility model relates to a vehicle load instrument technical field, more specifically relates to a multimedium load vehicle dynamic load weight measuring appearance.

Background

At present, the existing dynamic load weighing products of vehicles at home and abroad have a movable wagon balance type weighing, a positioning place weighing and the like or other weighing modes, such as a weighing mode of converting length/distance into weighing by ultrasonic non-contact type, and the above modes can not realize precision and monitor overload conditions in time; in addition, some departments and drivers often have overload conditions for transportation benefits, so that special metering equipment of public facilities or highway bridges and other countries is seriously damaged, the service life and service life of the highway bridges designed by the countries are influenced, and the safety of vehicle transportation cannot be ensured.

Disclosure of Invention

The utility model aims at overcoming the not enough of existence among the prior art, provide a multimedium load vehicle dynamic load weight-measuring appearance, driver oneself just knows the vehicle load goods whether overload when the vehicle shipment, just controls the matter of overloading in the source, need not to go on the road or go to have the weighbridge unit to remove to weigh.

As a first aspect of the utility model provides a multimedium load vehicle dynamic load weight-measuring appearance, including weighing pressure sensor, digital transmitter, digital acquisition treater, digital transmitter and management platform, wherein, weighing pressure sensor, digital transmitter, digital acquisition treater, digital transmitter and management platform connect gradually, the pressure conversion that weighing pressure sensor will sense is voltage signal to export for digital transmitter, digital transmitter converts voltage signal into RS485 digital signal, and exports for digital acquisition treater, digital acquisition treater sends received RS485 digital signal to management platform through digital transmitter.

Furthermore, the weighing pressure sensor, the digital transmitter, the digital acquisition processor and the digital transmitter are all arranged on the whole load-carrying vehicle, wherein the digital transmitter is arranged at the top end of the vehicle head of the whole load-carrying vehicle, the digital acquisition processor is arranged inside the vehicle head of the whole load-carrying vehicle, the bottom of the whole load-carrying vehicle is provided with a vehicle axle, a spring steel plate group is arranged above the vehicle axle, the weighing pressure sensor is arranged between the vehicle axle and the spring steel plate group, a U-shaped compression screw is sleeved outside the spring steel plate group, and the opening end and the closing end of the U-shaped compression screw are positioned on the spring steel plate group and two sides of the vehicle axle; and the opening end of the U-shaped compression screw is in threaded connection with a compression nut.

Furthermore, the closed end of the U-shaped compression screw is positioned above the spring steel plate group, and the open end of the U-shaped compression screw is positioned below the axle; and an upper pressing plate of the spring steel plate set is arranged between the closed end of the spring steel plate set and the U-shaped compression screw, and a lower fixing plate is arranged between the axle and the compression nut.

Further, the spring steel plate group is arranged above the middle part of the axle and consists of spring steel plate stacks in an isosceles trapezoid shape with a large upper part and a small lower part, wherein the spring steel plate group consists of 2 spring steel plate stacks with different sizes, the smaller spring steel plate stack is positioned above the spring steel plate stack, and the gravity centers of the 2 spring steel plate stacks are superposed and positioned on the vertical plane of the axle axis; the spring steel plate stack is formed by stacking spring steel plates with different lengths, and the spring steel plates with different lengths are stacked into an isosceles trapezoid stack with a large upper part and a small lower part.

Further, the weighing pressure sensors are ultrathin wide-range weighing sensors, and the number of the weighing pressure sensors is 2; the sensor frame is sleeved on the periphery of the weighing pressure sensor.

Further, weighing pressure sensor includes elastic housing, the top of the inside cavity of elastic housing is fixed with the resistance foil gage, the centre of the inside cavity of elastic housing is fixed with variable resistance, resistance foil gage and variable resistance electricity are connected and are constituteed bridge circuit, the one end of cable is advanced in the bridge circuit connection, the other end of advancing the cable is worn out be connected with digital transmitter behind the elastic housing supply on the elastic housing inlet cable male port department is equipped with waterproof wire cover, elastic housing's bottom is equipped with and is used for sealing the back shroud of the inside cavity of elastic housing, wherein, corresponding to the installation in the elastic housing the bearing position of resistance foil gage is upwards protruding, forms unsmooth elastic housing.

Furthermore, two binding posts are arranged on the digital transmitter, wherein one binding post is connected with the wire inlet cable, the other binding post is connected with a signal wire, and the signal wire comprises a 5-24V direct-current power supply cable and an RS485 communication cable.

Further, the resistance strain gauge is fixed at the top end of the inner cavity of the elastic shell by using an adhesive.

Further, the bridge circuit comprises a variable resistor Ra, a variable resistor Rb, a first strain gauge, a second strain gauge, a third strain gauge and a fourth strain gauge, the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are connected end to end, one end of the variable resistor Ra and the variable resistor Rb after being connected in series is connected between the first strain gauge and the second strain gauge, the other end of the variable resistor Ra and the variable resistor Rb is connected between the third strain gauge and the fourth strain gauge, the connection point between the first strain gauge and the second strain gauge is a power supply anode, the connection point between the third strain gauge and the fourth strain gauge is a power supply cathode, the connecting point between the second strain gauge and the fourth strain gauge is an output voltage anode, the connecting point between the third strain gauge and the first strain gauge is an output voltage cathode, and the shielding wire is connected to the elastic shell.

Further, digital transmitter includes treater, conversion module, communication module and power module, conversion module and communication module all with the treater is connected, power module respectively with treater, conversion module and communication module connect, conversion module includes AD acquisition circuit, reference voltage circuit and AD crystal oscillator circuit.

As can be seen from the above description, the technical effects of the present invention are: the utility model has simple structure and small occupied space; the weighing pressure sensor and the sensor frame are combined and then connected to the axle, so that the vehicle can carry goods legally, the service life of the vehicle is prolonged, and the manufacturing cost is low.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the installation structure of the present invention.

Fig. 3 is a sectional view a-a in fig. 2.

Fig. 4 is a view from direction B of fig. 3.

Fig. 5 is a view in the direction C of fig. 4.

Fig. 6 is a schematic structural diagram of the weighing pressure sensor of the present invention.

Fig. 7 is a schematic structural diagram of the digital transmitter of the present invention.

Fig. 8 is a schematic structural diagram of a bridge circuit according to the present invention.

Fig. 9 is a schematic diagram of the digital transmitter of the present invention.

Fig. 10 is a circuit diagram of a processor according to the present invention.

Fig. 11 is a circuit diagram of the conversion module of the present invention.

Fig. 12 is a circuit diagram of the communication module of the present invention.

Fig. 13 is a circuit diagram of the power module of the present invention.

Description of reference numerals: 1-a management platform; 2-a digital transmitter; 3-a digital acquisition processor; 4-a digital transmitter; 41-a binding post; 42-signal lines; 5-weighing pressure sensor; 51-an incoming cable; 52-resistance strain gauge; 53-variable resistance; 54-a resilient shell; 55-waterproof wire sleeve; 56-rear cover plate; 57-bridge circuit; 6-cargo weight; 7-a sensor frame; 8-axle; 9-U-shaped compression screws; 10-a compartment; 11-a girder; 12-lower fixed plate; 13-a wheel hub; 16-a compression nut; 17-pressing the elastic pad; 19-spring steel plate group upper pressing plate; 20-spring steel plate group; 23-loading the whole vehicle; 25-positioning the shaft.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the objects of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of the present invention for the specific embodiments, structures, features and effects of the dynamic load weighing instrument for multi-medium load-carrying vehicles. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In this embodiment, a multi-medium load-carrying vehicle dynamic load weighing instrument is provided, as shown in fig. 1, including a weighing pressure sensor 5, a digital transmitter 4, a digital acquisition processor 3, a digital transmitter 2 and a management platform 1, where the weighing pressure sensor 5, the digital transmitter 4, the digital acquisition processor 3, the digital transmitter 2 and the management platform 1 are connected in sequence, the weighing pressure sensor 5 converts sensed pressure into a voltage signal and outputs the voltage signal to the digital transmitter 4, the digital transmitter 4 converts the voltage signal into an RS485 digital signal and outputs the RS485 digital signal to the digital acquisition processor 3, and the digital acquisition processor 3 transmits the received RS485 digital signal to the management platform 1 through the digital transmitter 2 according to a specified protocol format.

Specifically, the dynamic load weighing instrument of the multi-medium load-carrying vehicle is powered by current input from the outside.

Preferably, as shown in fig. 2-5, the weighing pressure sensor 5, the digital transmitter 4, the digital acquisition processor 3 and the digital transmitter 2 are all arranged on the entire load-carrying vehicle 23, wherein the digital transmitter 2 is arranged at the top end of the vehicle head of the entire load-carrying vehicle 23, the digital acquisition processor 3 is arranged inside the vehicle head of the entire load-carrying vehicle 23, an axle 8 is arranged at the bottom of the entire load-carrying vehicle 23, a spring steel plate group 20 is arranged above the axle 8, the weighing pressure sensor 5 is arranged between the axle 8 and the spring steel plate group 20, a U-shaped hold-down screw 9 is sleeved outside the spring steel plate group 20, and the open end and the closed end of the U-shaped hold-down screw 9 are located at two sides of the spring steel plate group 20 and the axle 8; the opening end of the U-shaped compression screw 9 is connected with a compression nut 16 in a threaded mode.

Specifically, as shown in fig. 2-5, a spring steel plate group 20 is arranged above an axle 8, a weighing pressure sensor 5 is installed between the axle 8 and the spring steel plate group 20, a U-shaped hold-down screw 9 is sleeved outside the spring steel plate group 20, a closed end of the U-shaped hold-down screw 9 is positioned above the spring steel plate group 20, an open end of the U-shaped hold-down screw 9 is positioned below the axle 8, an open end of the U-shaped hold-down screw 9 is in threaded connection with a hold-down nut 16, a closed end of the U-shaped hold-down screw 9 abuts against the upper portion of the spring steel plate group 20, and the hold-down nut 16 abuts against the bottom of the axle 8, so that the axle 8, the spring steel plate group 20 and the weighing sensor 5 are connected; in addition, in order to more firmly connect the axle 8, the spring steel plate group 20 and the weighing pressure sensor 5, the spring steel plate group upper pressing plate 19 is arranged between the spring steel plate group 20 and the closed end of the U-shaped compression screw 9, the lower fixing plate 12 is arranged between the axle 8 and the compression nut 16, and the connecting area is increased.

It should be understood that the open end of the U-shaped hold-down screw 9 and the closed end of the U-shaped hold-down screw 9 are located at two sides of the spring steel plate group 20 and the axle 8, that is, the axle 8, the spring steel plate group 20 and the weighing pressure sensor 5 can be connected by sleeving a nut at the open end of the U-shaped hold-down screw 9.

Preferably, the wheel hubs 13 are rotatably mounted on both sides of the axle 8, and the spring steel plate group 20 is arranged above the middle part of the axle 8, so that the stress of the whole load vehicle 23 is more uniform.

Preferably, as shown in fig. 2-5, the closed end of the U-shaped compression screw 9 is located above the spring steel plate group 20, and the open end of the U-shaped compression screw 9 is located below the axle 8; a spring steel plate group upper pressing plate 19 is arranged between the closed end of the spring steel plate group 20 and the closed end of the U-shaped compression screw 9, and a lower fixing plate 12 is arranged between the axle 8 and the compression nut 16.

Preferably, as shown in fig. 2-5, the spring steel plate group 20 is disposed above the middle of the axle 8, and the spring steel plate group 20 is composed of a stack of spring steel plates in an isosceles trapezoid shape with a large upper part and a small lower part, wherein the spring steel plate group 20 is composed of 2 stacked spring steel plates with different sizes, the smaller one is located above, and the centers of gravity of the 2 stacked spring steel plates are overlapped and located on the vertical plane of the axis of the axle 8; the spring steel plate stack is formed by stacking spring steel plates with different lengths, and the spring steel plates with different lengths are stacked into an isosceles trapezoid stack with a large upper part and a small lower part.

It should be noted that the shape of the spring steel plate stack is not fixed, the mounting position of the weighing pressure sensor 5 is on the stress point of the spring steel plate stack, the shape of the spring steel plate stack is different, the stress point is different, and the mounting position of the weighing pressure sensor 5 is different.

Note that a plurality of load pressure sensors 5 are provided in one cart.

Preferably, the spring steel plates of the same group are fixedly connected by bolts.

Preferably, the digital transmitter 4 is fixed using a punch screw.

Preferably, the hardness of the weighing pressure sensor 5 is greater than that of the axle 8 and the spring steel plate group 20, and the hardness difference between the two is 5-10 HRC; wherein, the material of the weighing pressure sensor 5 is made of high-strength alloy elastic material (60 Si2 CYYA).

Preferably, as shown in fig. 2 to 5, the load pressure sensor 5 is an ultra-thin large-range load cell, and the number is 2 in order to reduce the deviation of the weighing result, so that a more accurate value can be obtained by taking a median value.

Preferably, the sensor frame 7 is sleeved on the periphery of the weighing pressure sensor 5, and the weighing pressure sensor 5 is limited to prevent the weighing pressure sensor from shifting in the horizontal direction.

In order to prevent the connection strength from being affected by the bumping of the vehicle during the driving process, a pressing elastic pad 17 is arranged between the pressing nut 16 and the lower fixing plate 12, wherein the thickness of the pressing elastic pad 17 is 1.5-2.5 mm.

Preferably, both end faces of the axle 8 are provided with positioning shafts 25 capable of abutting against the axle 8, the spring steel plate assembly 20 and the positioning shafts 25 are combined and fixed on both end faces of the axle 8 and are positioned by U-shaped compression screws 9, compression is fixed by compression nuts 16 and compression elastic pads 17, and the compression force is a torque wrench, and the pressure is used for setting the torque according to the size of the nuts (N.M).

Preferably, as shown in fig. 6, the weighing pressure sensor 5 comprises an elastic shell 54, a resistance strain gauge 52 is fixed at the top end of the inner cavity of the elastic shell 54, the variable resistor 53 is fixed in the middle of the inner cavity of the elastic shell 54, the resistance strain gauge 52 and the variable resistor 53 are electrically connected to form a bridge circuit 57, the bridge circuit 57 is connected with one end of the cable 51, the other end of the cable 51 penetrates through the elastic shell 54 and then is connected with the digital transmitter 4, a waterproof wire sleeve 55 is arranged at a port of the elastic shell 54 for inserting the cable 51, the bottom of the elastic shell 54 is provided with a rear cover plate 56 for sealing the inner cavity of the elastic shell 54, the elastic shell 54 protrudes upward corresponding to the load-bearing portion where the resistance strain gauge 52 is mounted, so as to form a concave-convex elastic shell, so that the resistance strain gauge 52 can be ensured to be deformed accurately in time when in use.

It should be noted that the weighing pressure sensor 5 is a flat concave-convex type small-size large-range weighing pressure sensor.

Preferably, the resistance strain gage 52 is secured to the top of the internal cavity of the elastomeric housing 54 using an adhesive.

Preferably, as shown in fig. 7, two terminals 41 are disposed on the digital transmitter 4, wherein one terminal 41 is connected to the cable 51, the other terminal 41 is connected to the signal line 42, and the signal line 42 includes a 5-24V dc power supply cable and an RS485 communication cable.

Preferably, as shown in fig. 8, the bridge circuit 57 includes a variable resistor Ra, a variable resistor Rb, a first strain gauge, a second strain gauge, a third strain gauge and a fourth strain gauge, the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are connected end to end, one end of the variable resistor Ra and the variable resistor Rb after being connected in series is connected between the first strain gauge and the second strain gauge, the other end of the variable resistor Ra and the variable resistor Rb is connected between the third strain gauge and the fourth strain gauge, the connection point between the first strain gauge and the second strain gauge is a power supply anode, the connection point between the third strain gauge and the fourth strain gauge is a power supply cathode, the connection point between the second strain gauge and the fourth strain gauge is an output voltage positive electrode, the connection point between the third strain gauge and the first strain gauge is an output voltage negative electrode, and the shielding wire is connected to the elastic shell 54.

Specifically, when the surface of the weighing pressure sensor 5 is stressed, the strain gauges 1, 2, 3 and 4 deform, so that the resistance values of the strain gauges 1, 2, 3 and 4 change, the structure of the bridge circuit 57 changes, the voltage value output by the bridge circuit 57 changes, and the stressed pressure is sensed through the change of the voltage value.

Preferably, as shown in fig. 9, digital transmitter 4 includes a processor, a conversion module, a communication module and a power module, the conversion module and the communication module are both connected to the processor, the power module is respectively connected to the processor, the conversion module and the communication module, and the conversion module includes an AD acquisition circuit, a reference voltage circuit and an AD crystal oscillator circuit.

Specifically, power module gives the treater, conversion module and communication module power supply, the treater is responsible for coordinating entire system, conversion module is responsible for detecting the little voltage signal of sensor output, the reference voltage that utilizes reference voltage circuit to provide, the voltage signal who outputs bridge circuit 57 is converted into digital voltage signal (the voltage signal that the treater can discern), AD crystal oscillator circuit is used for providing oscillation frequency for conversion module, the treater is the pressure value with this digital voltage signal conversion, communication module is responsible for exporting with RS 485's protocol behind the pressure value conversion digital signal.

Preferably, as shown in fig. 10-13, the processor includes a master control chip U1; the AD acquisition circuit comprises a conversion chip IC2, an AD wiring terminal, capacitors C10, C11, C15 and C17; the reference voltage circuit comprises a resistor R6, a capacitor C16 and a diode K, one end of the resistor R6 is connected with the VCC end of the power module, the other end of the resistor R6 is connected with the capacitor C16 and the diode K respectively, and the REF + end of the reference voltage circuit outputs reference voltage; the AD crystal oscillator circuit comprises a crystal oscillator X2, a capacitor C18 and a capacitor C19; the communication module comprises a communication chip IC1, a red diode RX, a red diode TX, diodes D4, D5, resistors R7, R8, R9, R10, R11 and a capacitor C12; the power supply module comprises a power supply chip U2, a self-recovery fuse F1, diodes D1, D2, D3, capacitors C13, C14 and an inductor L1;

a pin PD0 of the master control chip U1 is respectively connected with a pin 2 of the conversion chip IC2 and the anode of the crystal oscillator X2, and a pin PD1 of the master control chip U1 is respectively connected with a pin 3 of the conversion chip IC2 and the cathode of the crystal oscillator X2;

a1 st pin of the conversion chip IC2 is connected to a PB13 pin of the main control chip U1, a 2 nd pin of the conversion chip IC2 is connected to a PD0 pin of the main control chip U1, a 3 rd pin of the conversion chip IC2 is connected to a PD1 pin of the main control chip U1, a 4 th pin of the conversion chip IC2 is connected to a PB12 pin of the main control chip U1, a 5 th pin of the conversion chip IC2 is connected to a PB11 pin of the main control chip U1, a 6 th pin of the conversion chip IC2 is connected to one end of a capacitor C17 and a 2 nd position of the AD terminal respectively, a 7 th pin of the conversion chip IC2 is connected to one end of a capacitor C15 and a 3 rd position of the AD terminal respectively, an 8 th pin of the conversion chip IC2 is connected to the other end of a capacitor C15 and a 4 th position of the AD terminal respectively, and the other end of a11 th pin of the converter IC2 is connected to the first terminal C17 and the AD 1 st position of the AD terminal respectively, a9 th pin of the conversion chip IC2 is connected to a REF + end of the reference voltage circuit, a10 th pin of the conversion chip IC2 is connected to a GND end of a power module, a 12 th pin of the conversion chip IC2 is connected to a PA8 pin of the main control chip U1, a 13 th pin of the conversion chip IC2 is connected to a PB14 pin of the main control chip U1, a 14 th pin of the conversion chip IC2 is connected to a PB15 pin of the main control chip U1, a 15 th pin of the conversion chip IC2 is respectively connected to one end of a capacitor C10, one end of a capacitor C11 and a VCC end of the power module, and a 16 th pin of the conversion chip IC2 is respectively connected to the other end of the capacitor C10, the other end of the capacitor C11 and the GND end of the power module;

a1 st pin of the communication chip IC1 is connected to a cathode of the red diode RX and a PA10 pin of the main control chip U1, an anode of the red diode RX is connected to the resistor R7, a 4 th pin of the communication chip IC1 is connected to a cathode of the red diode TX and a PA9 pin of the main control chip U1, an anode of the red diode TX is connected to the resistor R8, a 2 nd pin and a 3 rd pin of the communication chip IC1 are connected to a PA11 pin of the main control chip U1, a 5 th pin of the communication chip IC1 is connected to a GND terminal of the power module, a 6 th pin of the communication chip IC1 is connected to one end of the resistor R10, one end of the resistor R11 and the diode D5, a 7 th pin of the communication chip IC1 is connected to one end of the resistor R9, the other end of the resistor R11 and the diode D4, a8 th pin of the communication chip IC1 is connected to a VCC terminal of the power module and one end of the capacitor C12, the other end of the capacitor C12 is connected with the other end of the resistor R9;

the 1 st pin of the power chip U2 is connected with the cathode of the diode D2 and the anode of the capacitor C13 respectively, the anode of the diode D2 is connected with one end of the self-recovery fuse F1 and one end of the diode D1 respectively, the 3 rd pin and the 5 th pin of the power chip U2 are connected with the other end of the diode D1, the anode of the diode D3, the cathode of the capacitor C13 and the cathode of the capacitor C14 respectively, the 2 nd pin of the power chip U2 is connected with the cathode of the diode D3 and one end of the inductor L1 respectively, and the 4 th pin of the power chip U2 is connected with the other end of the inductor L1 and the anode of the capacitor C14 respectively.

Preferably, the model of the communication chip IC1 is MAX485, the model of the conversion chip IC2 is AD7707, the model of the main control chip U1 is STM32F103C8T6, and the model of the power supply chip U2 is LM25 2596R-5.

Preferably, the management platform 1 is a network platform or a mobile phone APP.

Preferably, the digital acquisition processor 3 develops a board for STM32F103ZET 6.

Preferably, the digital transmitter 2 is model number E840-TTL-4G 05.

The utility model provides a multimedium load vehicle developments load check weighing instrument's theory of operation as follows: the weighing pressure sensor 5 is connected with the digital transmitter 4, the digital transmitter 4 transmits the weight value to the digital acquisition processor 3, the transportation data are combined and the weight of the goods loaded on the accurate vehicle is arranged in the digital acquisition processor 3, and then the data acquired in real time are transmitted to the management platform 1 through the digital transmitter 2.

The utility model provides a weighing pressure sensor 5's theory of operation as follows: the pressure is applied to the elastic shell 54, the resistance strain gauge 52 deforms, so that the resistance value of the resistance strain gauge 52 changes, the output voltage of the bridge circuit changes, the output voltage value can be converted into an applied pressure value through the digital transmitter 4, specifically, the digital transmitter 4 converts a micro-voltage signal output by the sensor (the bridge circuit 57) into a digital signal through circuit amplification, filtering and the like, the processor obtains a real-time pressure value by using a relation model of the voltage and the pressure, and the pressure value is converted into the digital signal through the communication module to be output.

It should be noted that, the utility model provides a weighing pressure sensor 5, precision 0.5% - + -1% is not equal, can require customization precision grade according to the user, and maximum range 0-15000kg is not equal, also can require customization range size according to the user, in addition, this weighing pressure sensor 5 mainly used load vehicle and large-scale object transport and specially make use of demand such as on the scheme.

It should be noted that the weighing pressure sensor 5 is made of a high-strength alloy steel material with the best domestic quality and high strength, wear resistance and constant elasticity, and is manufactured strictly according to the national standard process.

It should be noted that the weighing pressure sensor 5 is made of an elastomer material, high-strength alloy spring steel and the most advanced domestic heat treatment process, so that the material has high elasticity and long-term stability and meets the design requirements.

The weighing pressure sensor 5 provided by the utility model can be fixed at a proper installation position on a required product, or a pressing plate ring and other modes which can fix the ultra-thin type large-range weighing pressure sensor are used; the sensor can be arranged in 6 directions according to the force direction, and can be arranged in the vertical direction of the force point, and can be arranged in various positions and angles, such as the positions of the upper angle, the lower angle, the left angle and the right angle, so that the sensor is well fastened and positioned; the sensor is positioned to compress the accessories, the user determines the accessories for fixing and compressing, the compressing screws and other accessories according to the scheme installation position, when in installation, the accessories are required to be parallel up and down, the compressing force of the compressing screws is uniformly distributed when the sensors are fixed, and the compressing force is based on a torque wrench N.M (such as an M16 nut, 190 plus 260 N.M).

The utility model provides a multimedium load vehicle dynamic load weight-measuring appearance, when the vehicle normally works, when the load vehicle loads this load weight-measuring appearance, after loading weight goods 6 in the vehicle railway carriage 10, make spring steel plate 20 play elastic variable, pass to power on weighing pressure sensor 5 and on the axletree 8, make axletree 8, weighing pressure sensor 5, spring steel plate 20, girder 11, railway carriage 10 etc. unite and get up and measure vehicle load total weight, the total weight is sent the electric signal by weighing pressure sensor 5 and is carried digital transmitter 4 arrangement back, carry digital acquisition processor 3 by digital transmitter 4, collect the electric signal of each digital transmitter 4 output by digital acquisition processor 3 and carry out arrangement calculation, the electric signal converts into kilogram (kg), digital acquisition processor 3's function has the demarcation, examine and determine, vehicle overload alarm when depositing, All the weight measurement data are sent, and the weight measurement data are reported to relevant management departments, transportation companies and drivers through the digital transmitter 2, so that the mobile phone APP can see the weight of the loaded vehicle, the vehicle can be transported without overload, and the management departments and the transportation supervision departments can monitor the whole process of transportation control of the running vehicle.

Specifically, the digital acquisition processor 3 can be connected to a vehicle girder 11 or other parts, a special signal wire is used for connecting the digital transmitter 4 and the weighing pressure sensor 5, and the digital transmitter and the weighing pressure sensor are installed in a screw fit mode, when the digital transmitter and the weighing pressure sensor are matched in a screw thread mode, a thread anti-blocking agent is coated on the thread, and different compression nuts and screws are selected according to different working pressures; the pressing force of the pressing nut is determined according to the vehicle type, and is N.M (such as M16 nut, using torque force is 190 and 260 N.M), provided that the pressing force of the vehicle is reliable during operation, and the strength of the pressing nut is guaranteed so as not to be damaged during high-pressure tightening.

The utility model provides a multimedium load vehicle dynamic load weight-measuring appearance can the direct contact to weighing capacity data, is favorable to under various environment to the accurate measurement of vehicle loading capacity, reduces the influence that other symmetrical weight took place the resistance, especially when the highway has the accident, can ensure that multimedium load vehicle dynamic load weight-measuring appearance is intact, makes the precision of reporting data in real time correct.

The utility model provides a multimedium load vehicle developments load check weighing instrument can use on various purpose-built products, if: the working dynamics of the vehicles are monitored in real time on the special road surfaces of bridges, large buildings and ports and the road surface crossings for logistics and access.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims (10)

1. The utility model provides a multimedium load vehicle dynamic load weight-measuring appearance, its characterized in that, includes weighing pressure sensor (5), digital transmitter (4), digital acquisition processor (3), digital transmitter (2) and management platform (1), wherein, weighing pressure sensor (5), digital transmitter (4), digital acquisition processor (3), digital transmitter (2) and management platform (1) connect gradually, weighing pressure sensor (5) convert the pressure that senses to voltage signal to export for digital transmitter (4), digital transmitter (4) convert voltage signal to RS485 digital signal, and export for digital acquisition processor (3), digital acquisition processor (3) send received RS485 digital signal to management platform (1) through digital transmitter (2).

2. The multi-medium load-carrying vehicle dynamic load weighing instrument according to claim 1, wherein the weighing pressure sensor (5), the digital transmitter (4), the digital acquisition processor (3) and the digital transmitter (2) are all arranged on the load-carrying whole vehicle (23), wherein the digital transmitter (2) is arranged at the top end of the vehicle head of the load-carrying whole vehicle (23), the digital acquisition processor (3) is arranged inside the vehicle head of the load-carrying whole vehicle (23), an axle (8) is arranged at the bottom of the load-carrying whole vehicle (23), a spring steel plate group (20) is arranged above the axle (8), the weighing pressure sensor (5) is arranged between the axle (8) and the spring steel plate group (20), a U-shaped compression screw (9) is sleeved outside the spring steel plate group (20), and the open end of the U-shaped compression screw (9), The closed end is positioned at the two sides of the spring steel plate group (20) and the axle (8); the opening end of the U-shaped compression screw (9) is in threaded connection with a compression nut (16).

3. The multi-media load-carrying vehicle dynamic load weighing instrument according to claim 2, wherein the closed end of the U-shaped hold-down screw (9) is located above the spring steel plate group (20), and the open end of the U-shaped hold-down screw (9) is located below the axle (8); and a spring steel plate group upper pressing plate (19) is arranged between the closed end of the spring steel plate group (20) and the U-shaped compression screw (9), and a lower fixing plate (12) is arranged between the axle (8) and the compression nut (16).

4. The multi-media load-carrying vehicle dynamic load weighing instrument according to claim 2, wherein the spring steel plate group (20) is arranged above the middle part of the axle (8), and the spring steel plate group (20) is composed of spring steel plate stacks in an isosceles trapezoid shape with a large upper part and a small lower part, wherein the spring steel plate group (20) is composed of 2 spring steel plate stacks with different sizes, the smaller spring steel plate stack is positioned above, and the gravity centers of the 2 spring steel plate stacks are superposed and positioned on the vertical plane of the axle (8) axis; the spring steel plate stack is formed by stacking spring steel plates with different lengths, and the spring steel plates with different lengths are stacked into an isosceles trapezoid stack with a large upper part and a small lower part.

5. The multi-media load-carrying vehicle dynamic load cell according to claim 2, wherein the load pressure sensors (5) are ultra-thin wide-range load cells, the number being 2; and a sensor frame (7) is sleeved on the periphery of the weighing pressure sensor (5).

6. The multi-medium load-carrying vehicle dynamic load weighing instrument according to claim 1, wherein the weighing pressure sensor (5) comprises an elastic shell (54), a resistance strain gauge (52) is fixed at the top end of the inner cavity of the elastic shell (54), a variable resistor (53) is fixed in the middle of the inner cavity of the elastic shell (54), the resistance strain gauge (52) and the variable resistor (53) are electrically connected to form a bridge circuit (57), the bridge circuit (57) is connected with one end of a cable (51), the other end of the cable (51) penetrates through the elastic shell (54) and then is connected with a digital transmitter (4), a waterproof wire sleeve (55) is arranged at a port of the elastic shell (54) for inserting the cable (51), and a rear cover plate (56) for sealing the inner cavity of the elastic shell (54) is arranged at the bottom of the elastic shell (54), wherein, the elastic shell (54) is provided with a concave-convex elastic shell corresponding to the bearing part for installing the resistance strain gauge (52) and protruding upwards.

7. The multimedia load-carrying vehicle dynamic load weighing instrument according to claim 6, characterized in that two terminals (41) are arranged on the digital transmitter (4), wherein one terminal (41) is connected with the cable inlet (51), the other terminal (41) is connected with the signal wire (42), and the signal wire (42) comprises a 5-24V DC power supply cable and an RS485 communication cable.

8. The multi-media load vehicle dynamic load scale of claim 6, wherein said resistive strain gage (52) is secured to a top end of an interior cavity of said elastomeric housing (54) using an adhesive.

9. The multi-medium load-carrying vehicle dynamic load weighing instrument according to claim 6, wherein the bridge circuit (57) comprises a variable resistor Ra, a variable resistor Rb, a first strain gauge, a second strain gauge, a third strain gauge and a fourth strain gauge, the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are connected end to end, one end of the variable resistor Ra and the variable resistor Rb after being connected in series is connected between the first strain gauge and the second strain gauge, the other end of the variable resistor Ra and the variable resistor Rb are connected between the third strain gauge and the fourth strain gauge, a connection point between the first strain gauge and the second strain gauge is a positive power supply, a connection point between the third strain gauge and the fourth strain gauge is a negative power supply, a connection point between the second strain gauge and the fourth strain gauge is a positive output voltage, and a connection point between the third strain gauge and the first strain gauge is a negative output voltage, the shield wire is connected to the elastic housing (54).

10. The multi-media load vehicle dynamic load weighing instrument according to claim 1, wherein said digital transmitter (4) comprises a processor, a conversion module, a communication module and a power module, said conversion module and said communication module are connected with said processor, said power module is connected with said processor, said conversion module and said communication module, said conversion module comprises an AD acquisition circuit, a reference voltage circuit and an AD crystal circuit.

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