CN104655248A - Vehicle load sensor - Google Patents
Vehicle load sensor Download PDFInfo
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- CN104655248A CN104655248A CN201510071604.XA CN201510071604A CN104655248A CN 104655248 A CN104655248 A CN 104655248A CN 201510071604 A CN201510071604 A CN 201510071604A CN 104655248 A CN104655248 A CN 104655248A
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- rotating shaft
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- vehicle frame
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Abstract
The invention discloses a vehicle load sensor. The vehicle load sensor comprises a flexible connection part used for collecting change of distance between a vehicle frame and a vehicle axle, a mechanical energy conversion mechanism used for converting the change quantity of the distance between the vehicle frame and the vehicle axle in the vertical direction into a displacement quantity in the horizontal direction, and a measuring mechanism used for sensing the displacement quantity in the horizontal direction, wherein the mechanical energy conversion mechanism is arranged between the vehicle frame and the vehicle axle by virtue of a support column; the flexible connection part is connected with a vehicle body and the mechanical energy conversion mechanism; the output end of the mechanical energy conversion mechanism is connected with the input end of the measuring mechanism. The vehicle load sensor can be used for accurately measuring the vehicle load; when the vehicle frame suddenly faces downward or shakes left and right, the flexible connection part is used for buffering the impact force; the phenomenon that the damage to the sensor caused by the over-impact force generated by bumping of vehicle can be effectively avoided; the service life of the sensor is greatly improved.
Description
Technical field
The present invention relates to sensor technical field, particularly a kind of vehicle load sensor.
Background technology
In carrier, for ensureing the safety of Road Transportation, the loading mass of vehicle generally has strict regulation, and overweight not only can exist hidden trouble to vehicle safety, and also there is great threat to life safety; Particularly goods carrying vehicle, due to overweight and traffic hazard that is that cause can be found everywhere, brings heavy losses to the security of the lives and property of people.Traditional measurement car and the method for goods weight car are reached the place that weighbridge is housed to carry out weighing or estimating, not only trouble but also can not the loading situation of monitoring vehicle in real time; The installation and maintenance of weighbridge also needs higher cost in addition.
In recent years along with the develop rapidly of sensing technology, the load measuring sensor be applied on vehicle moves towards market gradually.At present, load measuring sensor mostly is the displacement transducer of the spacing for measuring vehicle frame and vehicle bridge, the kind of these sensors has magnetic inductive displacement transducer, capacitive displacement transducer and resistor type displacement sensor, and namely the principle of work of these sensors is that the change of the spacing by measuring vehicle frame and vehicle bridge obtains load-carrying weight signal.During installation, sensor body is arranged in the vehicle bridge of automobile by mounting structure, the measuring head of sensor then directly and the vehicle frame of automobile abut against; For making movement parts reset, back-moving spring being installed usually between movement parts and vehicle frame movement parts is realized.
But, all there is following defect in these sensors above-mentioned, that is: automobile is in traveling process, inevitably run into the situation of jolting, now, just overshoot phenomenon can be there is between vehicle frame and vehicle bridge, distance between vehicle bridge and vehicle frame can sharply be compressed at short notice, this sensor that rigidity will inevitably be caused to be arranged on vehicle bridge and workshop is subject to the impact extruded of moment, thus cause mounting structure to deform and scrap, measuring head, the sensor body of even whole sensor all can be damaged and cause using.
Summary of the invention
The technical issues that need to address of the present invention be to provide a kind of can Measurement accuracy vehicle load and vehicle frame will be caused to move down rapidly and the vehicle load sensor be damaged, to improve the serviceable life of sensor because of the factor such as to jolt.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Vehicle load sensor, comprise gather vehicle frame and vehicle bridge spacing and change flexible couplings, for vehicle frame and vehicle bridge spacing being converted to the mechanical energy throw-over gear of horizontal direction displacement at the variable quantity of vertical direction and being used for the measuring mechanism of sensation level displacement, described mechanical energy throw-over gear is arranged between vehicle frame and vehicle bridge by support column, flexible couplings connection body and mechanical energy throw-over gear, the output terminal of mechanical energy throw-over gear connects the input end of measuring mechanism.
Above-mentioned vehicle load sensor, described flexible couplings is the one in cotton rope, wire rope or chain.
Above-mentioned vehicle load sensor, described mechanical energy throw-over gear comprises rotating shaft and reduction torsion spring, rotating shaft is arranged on below vehicle frame by two support columns being vertically set on vehicle frame bottom, bearing assemble is passed through between rotating shaft and support column, rotating shaft is set with the reduction torsion spring of reset rotating shaft, one end of reduction torsion spring is fixed in rotating shaft, and the other end of reduction torsion spring is fixing on the support columns; One end of described flexible couplings is fixed in the rotating shaft between two support columns, and the other end of flexible couplings is fixed in vehicle bridge.
Above-mentioned vehicle load sensor, the middle part that described rotating shaft is positioned at two support columns is provided with the bobbin be fixedly connected with rotating shaft, and the diameter at bobbin two ends is greater than the diameter in the middle part of bobbin; Described flexible couplings is wound on bobbin.
Above-mentioned vehicle load sensor, is positioned at the draw ring vehicle bridge immediately below bobbin being fixedly installed fixing flexible couplings end.
Above-mentioned vehicle load sensor, described measuring mechanism comprises the multiturn potentiometer of the induction rotating shaft anglec of rotation and resistance signal is converted to the signaling conversion circuit plate of standard signal output; The turning axle connection rotating shaft of described multiturn potentiometer stretches out one end of support column, the input end of the output terminal connection signal change-over circuit plate of multiturn potentiometer.
Above-mentioned vehicle load sensor, described mechanical energy throw-over gear comprises rotating shaft and reduction torsion spring, rotating shaft is arranged on above vehicle bridge by two support columns being vertically set on vehicle bridge top, Screw assembly between rotating shaft and support column, rotating shaft is set with the reduction torsion spring of reset rotating shaft, one end of reduction torsion spring is fixed in rotating shaft, and the other end of reduction torsion spring is fixing on the support columns; One end of described flexible couplings is fixed in the rotating shaft between two support columns, and the other end of flexible couplings is fixed on vehicle frame.
Above-mentioned vehicle load sensor, described measuring mechanism comprises the capacitive transducer of induction rotating shaft horizontal shift and capacitance signal is converted to the signaling conversion circuit plate of standard signal output, capacitive transducer is arranged on the support below vehicle frame, the input end of the output terminal connection signal change-over circuit plate of capacitive transducer.
Above-mentioned vehicle load sensor, described capacitive transducer comprises cylindrical shell and is arranged on the two-plate in cylindrical shell, the cylindrical shell of capacitive transducer is horizontally fixed on support, first pole plate of capacitive transducer is vertically connected on rotating shaft and stretches to top in support, and the second pole plate of capacitive transducer is arranged on cylindrical shell bottom and parallels with the first pole plate.
Above-mentioned vehicle load sensor, described capacitive transducer comprises cylindrical shell and is arranged on the right cylinder in cylindrical shell, and the cylindrical shell of capacitive transducer is horizontally fixed on support, and right cylinder and cylindrical shell are coaxially arranged, and cylindrical lateral wall contacts with cylindrical shell madial wall.
Owing to have employed above technical scheme, the invention technological progress is as follows.
Central principle of the present invention is adopt Hard link between sensor and vehicle frame, then the form that is flexible coupling is adopted between sensor and vehicle bridge, namely adopt the flexible couplings connecting sensor that can be wound in rotating shaft and vehicle bridge, the Measurement accuracy to vehicle load can not only be realized; And when vehicle frame suddenly downwards or double swerve time, flexible couplings can play buffer action to impulsive force, effectively prevent and produces impulse force because vehicle jolts and cause the generation of sensor degradation phenomenon, substantially increase the serviceable life of sensor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the embodiment of the present invention 2.
Wherein: 1. vehicle frame, 11. support columns, 2. vehicle bridge, 21. draw rings, 3. sensor, 31. rotating shafts, 32. flexible couplings, 33. bobbins, 34. multiturn potentiometers, 35. reduction torsion springs, 36. signaling conversion circuit plates, 37. capacitive transducers.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
Vehicle load sensor, comprise gather vehicle frame and vehicle bridge spacing and change flexible couplings, for vehicle frame and vehicle bridge spacing being converted to the mechanical energy throw-over gear of horizontal direction displacement at the variable quantity of vertical direction and being used for the measuring mechanism of sensation level displacement, described mechanical energy throw-over gear is arranged between vehicle frame and vehicle bridge by support column, flexible couplings connection body and mechanical energy throw-over gear, the output terminal of mechanical energy throw-over gear connects the input end of measuring mechanism.
embodiment 1
Fig. 1 is a specific embodiment of the present invention, and in the present embodiment, mechanical energy throw-over gear comprises rotating shaft 31 and reduction torsion spring 35, and rotating shaft 31 is between vehicle frame and vehicle bridge, and parallel vehicle frame and vehicle bridge are arranged.The bottom of vehicle frame is vertically installed with two support columns 11, passes through bearing assemble between rotating shaft and support column.
The middle part that rotating shaft is positioned at two support columns is provided with bobbin 33, and bobbin is fixedly connected with rotating shaft.The diameter at bobbin two ends is greater than the diameter in the middle part of bobbin, and flexible couplings 32 is wound on bobbin.The setting of bobbin, sticks in the bearing of support column for preventing flexible couplings and causes sensor degradation in motion process; On the other hand, flexible couplings can also be concentrated on the middle part of rotating shaft, improve the sensitivity of rotating shaft induction load-carrying, improve the degree of accuracy of sensor further.Certainly, bobbin also can adopt metallic channel to replace.
In the present invention, flexible couplings is soft materials, can be wrapped in rotating shaft, can be cotton rope, wire rope or chain etc.One end of flexible couplings 32 is fixed on the bobbin between two support columns, and be positioned in the vehicle bridge 2 immediately below bobbin 33 and be fixedly installed draw ring 21, the other end of flexible couplings is fixed on draw ring.
Reduction torsion spring 35 is sleeved in rotating shaft, for the reset rotating shaft when downward distress resolves.One end of reduction torsion spring is fixed in rotating shaft; The other end of reduction torsion spring is fixed on support column 11, and the other end of certain reduction torsion spring also can be fixed on vehicle frame.
Measuring mechanism comprises multiturn potentiometer 34 and signaling conversion circuit plate 36.Multiturn potentiometer 34 is arranged on the support below vehicle frame, and its turning axle and rotating shaft are positioned on same axis, for responding to the anglec of rotation of rotating shaft.When rotating shaft rotates, can there is corresponding change in the resistance value of multiturn potentiometer.The input end of signaling conversion circuit plate 36 connects the output terminal of multiturn potentiometer 34, and the resistance signal for being exported by circle potentiometer 34 is converted to standard signal and exports, thus obtains the weight information of vehicle.
The principle of work of the present embodiment is: when goods loaded onto by vehicle, vehicle frame can move down under the weight of goods, now, vehicle frame and interaxle Distance Shortened, the flexible couplings be connected between rotating shaft and vehicle bridge also shortens thereupon, flexible couplings is wound on bobbin under the effect of torsion spring, and synchronous rotary is done in the coiling action that flexible couplings is followed in rotating shaft simultaneously, the change in displacement of vertical direction between vehicle frame and vehicle bridge is converted to the anglec of rotation change of rotating shaft horizontal direction; The rotating shaft rotated drives the turning axle of multiturn potentiometer to rotate, thus realizes the object changing multiturn potentiometer output resistance; After signaling conversion circuit plate receives change in resistance, be converted into corresponding load signal, the weight of institute's cargo in vehicle can be obtained.
embodiment 2
Fig. 2 is another specific embodiment of the present invention.The difference of the present embodiment and embodiment 1 is: in the present embodiment, and the rotating shaft of mechanical energy throw-over gear is arranged in vehicle bridge 2 by support column, is spun between rotating shaft and support column by screw thread; In the present embodiment, draw ring 21 is arranged on vehicle frame 1, and the end of flexible couplings is connected on the draw ring of vehicle frame.Namely in the present embodiment, mechanical energy throw-over gear is arranged in vehicle bridge, and one end of flexible couplings is then fixed on vehicle frame, exchanges with the installation site of embodiment 1.
From the difference of embodiment 1, the present embodiment is also that the structure of measuring mechanism is different.In the present embodiment, measuring mechanism comprises capacitive transducer 37 and signaling conversion circuit plate 36, and capacitive transducer 37 is arranged on the support below vehicle frame.Capacitive transducer 37 comprises cylindrical shell and is arranged on the two-plate in cylindrical shell, the cylindrical shell transverse horizontal of capacitive transducer 37 is fixed on support, and coaxially arrange with rotating shaft, first pole plate of capacitive transducer 37 is vertically connected on rotating shaft 31 and stretches to top in support, and the second pole plate of capacitive transducer 37 is arranged on cylindrical shell bottom and parallels with the first pole plate.
The principle of work of the present embodiment is: when the distance between vehicle frame and vehicle bridge changes, the length that flexible couplings is exposed also changes thereupon, and then causes spool and axis of rotation, the displacement of vertical direction is converted to the displacement of horizontal direction by the rotating shaft of rotating, namely rotating shaft moves left and right in the horizontal direction while rotation, thus the distance changed in capacitive transducer between the first pole plate and the second pole plate, the capacitance signal that namely capacitive transducer exports there occurs corresponding change; The capacitance signal that then capacitive transducer exports is converted to standard signal through signaling conversion circuit plate and exports, and can obtain the weight information of vehicle.
embodiment 3
The present embodiment and the difference of embodiment 2 are that the structure of capacitive transducer is different.In the present embodiment, capacitive transducer 37 comprises cylindrical shell and is arranged on the right cylinder in cylindrical shell, and the cylindrical shell of capacitive transducer 37 is horizontally fixed on support, and right cylinder and cylindrical shell are coaxially arranged, and cylindrical lateral wall contacts with cylindrical shell madial wall.In the process that rotating shaft moves left and right in the horizontal direction, the contact area between capacitive transducer cylindrical shell and right cylinder changes, and the capacitance signal that namely capacitive transducer exports there occurs corresponding change.
Certainly, flexible couplings of the present invention can also be the web member of soft materials, if can gather between vehicle frame and vehicle bridge distance change and the web member that can not deform because of impulsive force all within protection scope of the present invention; Mechanical energy throw-over gear can also be other versions, as long as the variable quantity of vertical direction can be converted to the structure of horizontal direction displacement all within protection scope of the present invention; Measuring mechanism also can be other structures, as long as can displacement on sensation level direction outputting standard signal namely drop within protection scope of the present invention.
Claims (10)
1. vehicle load sensor, it is characterized in that: comprise gather vehicle frame and vehicle bridge spacing and change flexible couplings, for vehicle frame and vehicle bridge spacing being converted to the mechanical energy throw-over gear of horizontal direction displacement at the variable quantity of vertical direction and being used for the measuring mechanism of sensation level displacement, described mechanical energy throw-over gear is arranged between vehicle frame and vehicle bridge by support column, flexible couplings connection body and mechanical energy throw-over gear, the output terminal of mechanical energy throw-over gear connects the input end of measuring mechanism.
2. vehicle load sensor according to claim 1, is characterized in that: described flexible couplings (32) is cotton rope, one in wire rope or chain.
3. vehicle load sensor according to claim 1, it is characterized in that: described mechanical energy throw-over gear comprises rotating shaft (31) and reduction torsion spring (35), rotating shaft (31) is arranged on vehicle frame (1) below by two support columns (11) being vertically set on vehicle frame bottom, bearing assemble is passed through between rotating shaft and support column, rotating shaft is set with the reduction torsion spring (35) of reset rotating shaft, one end of reduction torsion spring is fixed in rotating shaft, and the other end of reduction torsion spring is fixed on support column (11); One end of described flexible couplings (32) is fixed in the rotating shaft between two support columns, and the other end of flexible couplings is fixed in vehicle bridge (2).
4. vehicle load sensor according to claim 3, is characterized in that: the middle part that described rotating shaft is positioned at two support columns is provided with the bobbin (33) be fixedly connected with rotating shaft, and the diameter at bobbin two ends is greater than the diameter in the middle part of bobbin; Described flexible couplings is wound on bobbin.
5. vehicle load sensor according to claim 4, is characterized in that: be positioned at the draw ring (21) vehicle bridge (2) immediately below bobbin (33) being fixedly installed fixing flexible couplings end.
6. vehicle load sensor according to claim 3, is characterized in that: described measuring mechanism comprises the multiturn potentiometer (34) of the induction rotating shaft anglec of rotation and resistance signal is converted to the signaling conversion circuit plate (36) of standard signal output; The turning axle connection rotating shaft (31) of described multiturn potentiometer (34) stretches out one end of support column, the input end of output terminal connection signal change-over circuit plate (36) of multiturn potentiometer (34).
7. vehicle load sensor according to claim 1, it is characterized in that: described mechanical energy throw-over gear comprises rotating shaft (31) and reduction torsion spring (35), rotating shaft (31) is arranged on vehicle bridge (2) top by two support columns (11) being vertically set on vehicle bridge top, Screw assembly between rotating shaft and support column, rotating shaft is set with the reduction torsion spring (35) of reset rotating shaft, one end of reduction torsion spring is fixed in rotating shaft, and the other end of reduction torsion spring is fixed on support column (11); One end of described flexible couplings (32) is fixed in the rotating shaft between two support columns, and the other end of flexible couplings is fixed on vehicle frame (1).
8. vehicle load sensor according to claim 7, it is characterized in that: described measuring mechanism comprises the capacitive transducer (37) of induction rotating shaft horizontal shift and capacitance signal is converted to the signaling conversion circuit plate (36) of standard signal output, capacitive transducer (37) is arranged on the support below vehicle frame, the input end of output terminal connection signal change-over circuit plate (36) of capacitive transducer.
9. vehicle load sensor according to claim 8, it is characterized in that: described capacitive transducer (37) comprises cylindrical shell and is arranged on the two-plate in cylindrical shell, the cylindrical shell of capacitive transducer (37) is horizontally fixed on support, first pole plate of capacitive transducer (37) is vertically connected on rotating shaft (31) and stretches to top in support, and the second pole plate of capacitive transducer (37) is arranged on cylindrical shell bottom and parallels with the first pole plate.
10. vehicle load sensor according to claim 8, it is characterized in that: described capacitive transducer (37) comprises cylindrical shell and is arranged on the right cylinder in cylindrical shell, the cylindrical shell of capacitive transducer (37) is horizontally fixed on support, right cylinder and cylindrical shell are coaxially arranged, and cylindrical lateral wall contacts with cylindrical shell madial wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071604.XA CN104655248A (en) | 2015-02-11 | 2015-02-11 | Vehicle load sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071604.XA CN104655248A (en) | 2015-02-11 | 2015-02-11 | Vehicle load sensor |
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| Publication Number | Publication Date |
|---|---|
| CN104655248A true CN104655248A (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071604.XA Pending CN104655248A (en) | 2015-02-11 | 2015-02-11 | Vehicle load sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157803A (en) * | 2015-09-30 | 2015-12-16 | 李晓刚 | Vehicle load capacitance-type sensor |
| CN110530481A (en) * | 2019-07-25 | 2019-12-03 | 安徽中凯信息产业股份有限公司 | A kind of angled type vehicle load sensor |
| CN111928929A (en) * | 2020-06-24 | 2020-11-13 | 武汉神动汽车电子电器股份有限公司 | Vehicle load sensor |
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| CN202002714U (en) * | 2011-03-08 | 2011-10-05 | 吉林大学 | High-precision automobile overload and unbalance-load detector with overload protection function |
| CN202329482U (en) * | 2011-11-21 | 2012-07-11 | 济南开思科技有限公司 | Pull rope displacement sensor with wire unwinding wheel |
| CN203869760U (en) * | 2014-06-05 | 2014-10-08 | 深圳市信为科技发展有限公司 | Displacement sensor for vehicle carrying capacity measurement |
| CN204514445U (en) * | 2015-02-11 | 2015-07-29 | 李晓刚 | Vehicle load sensor |
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2015
- 2015-02-11 CN CN201510071604.XA patent/CN104655248A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2064049U (en) * | 1990-01-23 | 1990-10-17 | 北京市华阳汽车测重仪厂 | Weight limiting instrument for car |
| JPH11304576A (en) * | 1998-04-21 | 1999-11-05 | Wellpine Communications:Kk | Loadage measuring apparatus |
| CN2352934Y (en) * | 1998-10-13 | 1999-12-08 | 张繁荣 | Automobile weighing apparatus |
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| CN202002714U (en) * | 2011-03-08 | 2011-10-05 | 吉林大学 | High-precision automobile overload and unbalance-load detector with overload protection function |
| CN202329482U (en) * | 2011-11-21 | 2012-07-11 | 济南开思科技有限公司 | Pull rope displacement sensor with wire unwinding wheel |
| CN203869760U (en) * | 2014-06-05 | 2014-10-08 | 深圳市信为科技发展有限公司 | Displacement sensor for vehicle carrying capacity measurement |
| CN204514445U (en) * | 2015-02-11 | 2015-07-29 | 李晓刚 | Vehicle load sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157803A (en) * | 2015-09-30 | 2015-12-16 | 李晓刚 | Vehicle load capacitance-type sensor |
| CN110530481A (en) * | 2019-07-25 | 2019-12-03 | 安徽中凯信息产业股份有限公司 | A kind of angled type vehicle load sensor |
| CN111928929A (en) * | 2020-06-24 | 2020-11-13 | 武汉神动汽车电子电器股份有限公司 | Vehicle load sensor |
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Application publication date: 20150527 |