CN207923248U

CN207923248U - A kind of weigh assembly of cargo vehicle

Info

Publication number: CN207923248U
Application number: CN201820251622.5U
Authority: CN
Inventors: 张伟
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2018-02-12
Filing date: 2018-02-12
Publication date: 2018-09-28
Anticipated expiration: 2028-02-12

Abstract

The utility model discloses a kind of weigh assemblies of cargo vehicle, including weighing sensor（2）, elastic element（3）, bearing plate（4）And bearing frame（7）, the elastic element（3）It is carried on bearing plate（4）With bearing frame（7）Between, the elastic element（3）Top and bearing plate（4）It is connected, bottom and bearing frame（7）Connection, weighing sensor（2）Induction part（2.1）It is relatively fixed in bearing plate（4）On, weighing sensor（2）Measurement portion（2.2）It is relatively fixed in bearing frame（7）On, bearing plate（4）Length travel drive induction part（2.1）Relative to measurement portion（2.2）Generate relative displacement.Weighing sensor is directly mounted on movable pedestal by the utility model, is directly placed at cargo when needs in the following, being finished directly to take away, is eliminated the work of installation and removal and its expense of assembling and dissembling process, and of simple structure and strong practicability.

Description

A kind of weigh assembly of cargo vehicle

Technical field

The utility model is related to the fields of weighing, more particularly to a kind of weigh assembly of cargo vehicle.

Background technology

In the transportational process of cargo vehicle, because the reasons such as vibrations or theft, cause the cargo of the owner of cargo often to have loss, So needing detection cargo in due course, the existing cargo weighing method mainly setting angle sensor on the suspension of lorry leads to The method for crossing carriage weight carries out the weighing measurement of cargo, but angular transducer is difficult to install and remove.Other are existing to weigh Sensor needs are installed in vehicle repairing factory, and installation and removal are expensive, and because lorry is employed temporarily, every time Using being both needed to reinstall and dismantle, cost is higher.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of weigh assembly of cargo vehicle.

The purpose of this utility model is achieved through the following technical solutions：A kind of weigh assembly of cargo vehicle, packet Weighing sensor, elastic element, bearing plate and bearing frame are included, the elastic element is carried between bearing plate and bearing frame, institute The top for stating elastic element is connected with bearing plate, and bottom is connect with bearing frame, and the induction part of weighing sensor, which is relatively fixed, to be held On weight plate, the measurement portion of weighing sensor is relatively fixed on bearing frame, the length travel of bearing plate drive induction part relative to Measurement portion generates relative displacement.

A kind of weigh assembly of cargo vehicle further includes measuring cover board, and the top for measuring cover board is held with described Weight plate is hinged.

A kind of weigh assembly of cargo vehicle further includes roller, and the roller is set to the platform of the bearing frame both sides On rank, the measurement cover board support is on roller.

A kind of weigh assembly of cargo vehicle further includes shell, and the shell is coated on outside bearing frame, on shell Equipped with the opening to match with the measurement cover board opening being located on bearing frame.

A kind of weigh assembly of cargo vehicle further includes pedestal, and the pedestal is set to the bearing frame bottom, institute It states pedestal and is equipped with levelling device, the levelling device includes level meter and at least three leveling serews, and the level meter is set to On pedestal, leveling serew be set to pedestal under at car contact.

The elastic element is made of one or more springs, when elastic element be a spring when, the axis of spring with The center of gravity of the bearing plate is overlapped, when elastic element is multiple springs, center of gravity of multiple springs evenly around the bearing plate Arrangement.

A kind of weigh assembly of cargo vehicle further includes guider, the guider include guide cylinder and with The matched mandril in guide cylinder gap, one are installed on the bearing frame, and another one is installed on the bearing plate.

The weighing sensor is potentiometer type electric resistance sensor, and induction part is the brush of potentiometer type electric resistance sensor, Measurement portion is the resistive element of potentiometer type electric resistance sensor, and one end of measuring circuit is connected with brush, the other end and resistance member Part is connected.

The weighing sensor is capacitance type sensor, and induction part is the first pole plate of capacitance type sensor, and measurement portion is Second pole plate of capacitance type sensor, one end of measuring circuit are connected with the first pole plate, and the other end is connected with the second pole plate.

The utility model has the beneficial effects that：

1）Directly weighing sensor is mounted on movable pedestal, the cargo being directly placed at when needs in compartment In the following, being finished directly to take away, the work of installation and removal and its expense of assembling and dissembling process are eliminated, and simple in structure, it is real It is strong with property.

2）Resistance sensor and capacitance type sensor are selected, by by non-electrical physical quantity（Displacement）Be converted to resistance value or The variation of capacitance, more intuitively, and mounting structure is simple, convenient and practical.

3）Mandril is socketed in guide cylinder, forces bearing plate that can only move in vertical direction, and is avoided since this claims Recombination part is occurred by caused by the extruding of side cargo to the case where side-shift, improves accuracy of measurement, and can be big The big difficulty for reducing in-site installation, repair, adjustment etc. and time.

4）Roller is set on the step of the bearing frame both sides, is measured cover board support on roller, is effectively reduced survey The friction between cover board and bearing frame is measured, the service life of entire weigh assembly is extended.

5）The measurement error caused by boxcar bottom surface is uneven can be effectively solved by levelling device, To obtain more accurate data.

Description of the drawings

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is enlarged drawing when weighing sensor is resistance sensor in Fig. 1；

Fig. 3 is enlarged drawing when weighing sensor is capacitance type sensor in Fig. 1；

Fig. 4 is the positional structure schematic diagram of the utility model levelling device；

In figure, 1- measures cover board, 2- weighing sensors, 2.1- induction parts, 2.2- measurement portions, 3- elastic elements, 4- load-bearing Plate, 5- guiders, 5.1- guide cylinders, 5.2- mandrils, 6- pedestals, 7- bearing frames, 8- rollers, 9- shells, 10- level meters, 11- Leveling serew.

Specific implementation mode

Below in conjunction with embodiment, the technical solution of the utility model is clearly and completely described, it is clear that retouched The embodiment stated is only the utility model a part of the embodiment, instead of all the embodiments.Based in the utility model Embodiment, the every other embodiment that those skilled in the art are obtained under the premise of not making the creative labor, all belongs to In the range of the utility model protection.

Refering to fig. 1-4, the utility model provides a kind of technical solution：A kind of weigh assembly of cargo vehicle, including weigh Sensor 2, elastic element 3, bearing plate 4 and bearing frame 7.

As shown in Figure 1, the elastic element 3 is carried between bearing plate 4 and bearing frame 7, the top of the elastic element 3 It is connected with bearing plate 4, bottom is connect with bearing frame 7, it is preferred that the top of the elastic element 3 and 4 detachable phase of bearing plate Even, bottom is detachably connected with bearing frame 7, maintenance easy to disassemble, while the later stage is convenient for more when aging occurs in elastic element 3 It changes, to keep the measurement high-precision of component.

According to the fatigue aging curve of the elastic element 3 of selected model, can increase in the analysis and processing unit of measuring circuit If compensation of ageing module, for the fatigue aging curve compensation measurement result according to elastic element 3, it is full-time to improve weigh assembly Accuracy of measurement.

The elastic element 3 is made of one or more springs, when elastic element 3 is a spring, the axis of spring It is Chong Die with the center of gravity of the bearing plate 4, then 2 gap of weighing sensor can be matchingly installed on the spring center, when elastic member When part 3 is multiple springs, multiple springs are arranged evenly around the center of gravity of the bearing plate 4, then can be installed on weighing sensor 2 Between multiple springs so that elastic element 3 avoids internal weighing sensor 2 impaired while experiencing deformation.

The induction part 2.1 of the weighing sensor 2 is relatively fixed on bearing plate 4, the measurement portion 2.2 of weighing sensor 2 It is relatively fixed on bearing frame 7, specifically, the measurement portion 2.2 of weighing sensor 2 is detachably connected with bearing frame 7, bearing plate 4 Length travel drive induction part 2.1 relative to measurement portion 2.2 generate relative displacement.

As shown in Fig. 2, resistance sensor or capacitance type sensor, the resistance-type can be used in the weighing sensor 2 Sensor can be potentiometer type electric resistance sensor, can also be strain chip electric resistance sensor.

When the weighing sensor 2 is potentiometer type electric resistance sensor, induction part 2.1 is potentiometer type electric resistance sensor Brush, measurement portion 2.2 be potentiometer type electric resistance sensor resistive element, one end of measuring circuit is connected with brush, another End is connected with resistive element.Potentiometer type electric resistance sensor is simple in structure, small, and light weight is cheap, and performance is stablized, Of less demanding to environmental condition, output signal is larger, is generally not required to amplify, and easily realizes the conversion of functional relation, when measured When changing, movement is generated on resistive element by brush contact, the resistance value between the contact and resistive element will be sent out Changing, you can realize linear transformation of the displacement (measured) between resistance.

When the resistance sensor is strain chip electric resistance sensor, resistance strain effect is utilized（If conducting wire along Axis direction is deformed by the effect of power, then its resistance value also changes therewith）Work is measured, due to gold Belonging to body has certain resistance, and same material, thinner or thinner, then resistance value is bigger, when added with external force, if metal attenuates Elongated, then resistance value increases；If thicker shorten, resistance value reduces, and in case of metallic resistance is equipped on the object of strain, works as object When body stretches, metallic object also is occurred to stretch in a certain ratio, thus resistance value generates corresponding variation, electric resistance sensor precision Height, wide range of measurement, long lifespan can work under severe conditions, it is easy to accomplish miniaturization, integration and diversification of varieties.

As another embodiment, as shown in figure 3, when the weighing sensor 2 is capacitance type sensor, induction part 2.1 be the first pole plate of capacitance type sensor, and measurement portion 2.2 is the second pole plate of capacitance type sensor, one end of measuring circuit It is connected with the first pole plate, the other end is connected with the second pole plate.

Capacitance type sensor is to be converted measurand or mechanical quantity using various types of capacitors as sensing element As a kind of conversion equipment of electric capacitance change, actually one capacitor with variable element.This weigh assembly is adopted Use parallel plate capacitors as sensing element, according to C=ε A/d it is found that permittivity ε between polar plate area A and two-plate When constant, the spacing d of capacitance C and two-plate is inversely proportional, and thus can reflect the weight of cargo by the variation of capacitance C Amount.

The measuring circuit of the resistance value and capacitance is the prior art, and details are not described herein again.

A kind of weigh assembly of the cargo vehicle further include measure cover board 1, it is described measure cover board 1 top with it is described Bearing plate 4 is hinged, and a kind of weigh assembly of cargo vehicle further includes roller 8, and the roller 8 is set to the bearing frame 7 On the step 7.1 of both sides, 1 support of measurement cover board is on roller 8, it is preferred that and the both ends of the roller 8 are equipped with protrusion, Smooth roller 8 can reduce the friction measured between cover board 1 and bearing frame 7, and the protrusion at both ends plays limitation and measures cover board 1 The unlikely effect to horizontally slip so that measuring cover board 1 can only move in the direction of motion of bearing plate 4.

A kind of weigh assembly of cargo vehicle further includes shell 9, and the shell 9 is coated on outside bearing frame 7, shell 9 are equipped with the opening to match with measurement 1 opening of cover board being located on bearing frame 7, due to the bottom of elastic element 3, weigh The measurement portion 2.2 of sensor 2 is detachably connected with bearing frame 7, then measures cover board 1, elastic element 3 and weighing plate 4 and form Entirety can be drawn upwardly out, conveniently topple over the sundries for falling into shell 9, simultaneously as the creep of elastic element 3 itself and in due course more When changing or the type of elastic element 3 need to be changed, structure replacement may be implemented, consequently facilitating measuring the cargo of different weight and obtaining To representative data.

A kind of weigh assembly of cargo vehicle further includes pedestal 6, and the pedestal 6 is set to 7 bottom of the bearing frame, Preferably, the bearing frame 7 is solid bearing frame, is conducive to load capacity grade cargo, ensures the integrality of entire weigh assembly.

A kind of weigh assembly of cargo vehicle further includes guider 5, and the guider 5 includes guide cylinder 5.1 and with the matched mandril 5.2 in 5.1 gap of guide cylinder, one is installed on bearing frame 7, and another one is installed on the bearing plate 4 On, then the mandril 5.2 is socketed in the guide cylinder 5.1, forces bearing plate 4 that can only move in vertical direction, and is avoided Occur to the case where side-shift caused by this weigh assembly is by the extruding of side cargo, it is accurate to improve measurement Degree, and difficulty and the time of in-site installation, repair, adjustment etc. can be greatly reduced.

As shown in figure 4, the pedestal 6 is equipped with levelling device, the levelling device includes level meter 10 and at least three Leveling serew 11, the level meter 10 be set to pedestal 6 on, leveling serew 11 be set to pedestal 6 under at car contact, due to The long-term bearing goods of lorry, car bottom surface is usually uneven, on the one hand real if pedestal 6 cannot keep horizontal positioned Border cargo gravity should be equal to measured value * arccos θ will lead to the uncompensable errors of measurement result because slanted angle can not determine； On the other hand, with the increase of slanted angle, the friction between guide cylinder 5.1 and mandril 5.2 will constantly increase, this also can be very big This weigh assembly as a result, therefore should be placed in the position progress of relative level by contract measurement in degree to obtain more accurate data It measures, detects whether pedestal 6 is horizontal using level meter 10 first, if it is not, then passing through the height of adjusting leveling serew 11 It spends to reach desired position.

The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein Disclosed form is not to be taken as excluding other embodiments, and can be used for other combinations, modifications, and environments, and Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all rights appended by the utility model It is required that protection domain in.

Claims

1. a kind of weigh assembly of cargo vehicle, it is characterised in that：Including weighing sensor（2）, elastic element（3）, bearing plate （4）And bearing frame（7）, the elastic element（3）It is carried on bearing plate（4）With bearing frame（7）Between, the elastic element（3） Top and bearing plate（4）It is connected, bottom and bearing frame（7）Connection, weighing sensor（2）Induction part（2.1）It is relatively fixed In bearing plate（4）On, weighing sensor（2）Measurement portion（2.2）It is relatively fixed in bearing frame（7）On, bearing plate（4）Longitudinal direction Displacement drives induction part（2.1）Relative to measurement portion（2.2）Generate relative displacement.

2. a kind of weigh assembly of cargo vehicle according to claim 1, it is characterised in that：Further include measuring cover board（1）, The measurement cover board（1）Top and the bearing plate（4）It is hinged.

3. a kind of weigh assembly of cargo vehicle according to claim 2, it is characterised in that：It further include roller（8）, described Roller（8）Set on the bearing frame（7）The step of both sides（7.1）On, the measurement cover board（1）Support is in roller（8）On.

4. a kind of weigh assembly of cargo vehicle according to claim 2, it is characterised in that：It further include shell（9）, described Shell（9）It is coated on bearing frame（7）Outside, shell（9）It is equipped with and is located at bearing frame（7）On measurement cover board（1）Open phase Matched opening.

5. a kind of weigh assembly of cargo vehicle according to claim 1, it is characterised in that：It further include pedestal（6）, described Pedestal（6）Set on the bearing frame（7）Bottom, the pedestal（6）It is equipped with levelling device, the levelling device includes level meter （10）With at least three leveling serews（11）, the level meter（10）Set on pedestal（6）On, leveling serew（11）Set on pedestal （6）Under at car contact.

6. a kind of weigh assembly of cargo vehicle according to claim 1, it is characterised in that：The elastic element（3）By One or more spring compositions, work as elastic element（3）For a spring when, the axis of spring and the bearing plate（4）Center of gravity Overlapping, works as elastic element（3）For multiple springs when, multiple springs are evenly around the bearing plate（4）Center of gravity arrangement.

7. a kind of weigh assembly of cargo vehicle according to claim 1, it is characterised in that：It further include guider（5）, The guider（5）Including guide cylinder（5.1）With with guide cylinder（5.1）The matched mandril in gap（5.2）, one is installed on institute State bearing frame（7）On, another one is installed on the bearing plate（4）On.

8. a kind of weigh assembly of cargo vehicle according to claim 1, it is characterised in that：The weighing sensor（2） For potentiometer type electric resistance sensor, induction part（2.1）For the brush of potentiometer type electric resistance sensor, measurement portion（2.2）For current potential The resistive element of device formula electric resistance sensor, one end of measuring circuit are connected with brush, and the other end is connected with resistive element.

9. a kind of weigh assembly of cargo vehicle according to claim 1, it is characterised in that：The weighing sensor（2） For capacitance type sensor, induction part（2.1）For the first pole plate of capacitance type sensor, measurement portion（2.2）For capacitance type sensor The second pole plate, one end of measuring circuit is connected with the first pole plate, and the other end is connected with the second pole plate.