CN103868574B - Hydraulic vehicle load transducer - Google Patents
Hydraulic vehicle load transducer Download PDFInfo
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- CN103868574B CN103868574B CN201210528484.8A CN201210528484A CN103868574B CN 103868574 B CN103868574 B CN 103868574B CN 201210528484 A CN201210528484 A CN 201210528484A CN 103868574 B CN103868574 B CN 103868574B
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- piston
- spring
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- hydraulic cylinder
- cylinder
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- 239000010720 hydraulic oil Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 5
- 241000269799 Perca fluviatilis Species 0.000 description 8
- 230000008859 change Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The invention provides a kind of hydraulic vehicle load transducer, comprise hydraulic cylinder, hydraulic oil, piston, O-ring seal, spring assembly, pressure transducer and be connected and fixed assembly; Hydraulic cylinder comprises base, cylinder body and upper cover; The surrounding bight of base is respectively provided with one and installs fixing bolt hole; Hydraulic oil is located in the inner chamber of hydraulic cylinder; Piston comprises piston body and the piston rod of integral connection; Piston is provided with wire guide; Pressure transducer embed and welded seal in the sensor mounting groove of piston body lower end; Spring assembly comprises spring and spring sheet-holder; Be connected and fixed assembly and comprise lengthening U-bolt, clamp nut, hexagonal nut and cylindrical positioning pins.Be connected and fixed assembly for being fixedly connected with spring assembly with the vehicle bridge of automobile.Hydraulic vehicle load transducer long working life of the present invention, good reliability, measuring accuracy are high; Be applicable to the measurement of various axletree, wheel weight, applicability is strong.
Description
Technical field
The present invention relates to vehicles load measurement device, be specifically related to a kind of hydraulic vehicle load transducer.
Background technology
Carload sensor, or be called carload measuring instrument, weighing instrument, LOAD CELLS etc., it converts corresponding electric signal transmission to the corresponding control device of the brake system of automobile as abs controller etc. mainly for detection of carload and by the load capacity detected, so that the size in good time to the damping force of front and rear wheel during adjustment automobile brake, to improve the safety and reliability of brake.Common carload sensor has capacitance weighing sensor, it is by being that the change of electric capacity carries out respective handling by signal conditioning circuit and subsequent process circuit again by carload change transitions, its weak point is circuit relative complex, functional reliability relative deficiency.Publication number is that the Chinese patent literature of CN101738244A discloses a kind of carload weighing instrument, its primarily of can plastic deformation sheet metal and be that the main metering circuit formed forms by Wheatstone bridge, its weak point is: used can the sheet metal in use continuous repeated deformation of plastic deformation, and the fatigue strength of metal material is limited, when deforming degree reaches fatigue of materials intensity, sheet metal will be fractureed, and directly causes this Load Meter to lose efficacy.
Summary of the invention
The object of the invention is: overcome the deficiencies in the prior art, provide that a kind of long working life, reliability are high, measurement is accurate and the employing hydraulic mechanism that applicability is strong and pressure transducer as the hydraulic vehicle load transducer of measurement mechanism.
Technical scheme of the present invention is: hydraulic vehicle load transducer of the present invention, and its design feature is: comprise hydraulic cylinder, hydraulic oil, piston, O-ring seal, spring assembly, pressure transducer and be connected and fixed assembly;
Above-mentioned hydraulic cylinder is steel integral piece; Hydraulic cylinder comprises base, cylinder body and upper cover; Base is square plate body part, and the surrounding bight of base is respectively provided with one and installs fixing bolt hole; Cylinder body is the column member of hollow; Upper cover is discoid, and the center of upper cover is provided with the manhole of upward and downward; Cylinder body is connected with the upper surface one of base by its lower surface; Cylinder body is connected with the lower surface one of upper cover by its upper surface; Hydraulic cylinder is surrounded the inner chamber forming hydraulic cylinder jointly by its base, cylinder body and upper cover; Hydraulic oil is located in the inner chamber of hydraulic cylinder;
Piston is steel integral piece; Piston comprises piston body and the piston rod of integral connection; Piston body is discoid, and the upper end of piston body is provided with spring sheet-holder hole, is provided with the sensor mounting groove of fovea superior below the middle part of piston body; Piston rod is round bar part, and the diameter compatible of the manhole that the external diameter of piston rod and hydraulic cylinder cover closes; Piston rod is connected with the upper surface one of piston body by its lower surface; Piston is located at the liquid level upper end of hydraulic oil, and piston is slidably connected by the inwall of its piston body by the cylinder body of O-ring seal and hydraulic cylinder; The top of the piston rod of piston protrudes upward the central circular through hole of the upper cover of hydraulic cylinder; Piston is also provided with that main body is positioned on the axis of piston, top fold and the wire guide that upper outlet is positioned at the top of piston rod, lower outlet communicates with the sensor mounting groove of piston body;
Weld with piston body in the sensor mounting groove that pressure transducer is arranged on the piston body of piston; Seam seal gum sealing between pressure transducer and piston body;
Spring assembly comprises spring and spring sheet-holder; The internal diameter of the external diameter of spring and the cylinder body of hydraulic cylinder adapts; Spring is fixed on the upper end of piston body by the spring sheet-holder hole of the upper end of the piston body of piston by spring sheet-holder;
Be connected and fixed assembly and comprise lengthening U-bolt, clamp nut, hexagonal nut and cylindrical positioning pins; The two side arms body of U-bolt is cylindrical bar body, and its underpart is provided with external thread, is provided with dowel hole in the middle part of it; Lengthen U-bolt and be provided with 2 width; Clamp nut and hexagonal nut are respectively provided with 4 respectively; Cylindrical positioning pins is the bar-shaped integral piece of steel cylinder, and cylindrical positioning pins is provided with 2.
Further scheme is: the spring of above-mentioned spring assembly is screw thread spring.
Further scheme is: the liquid level of above-mentioned hydraulic oil is about 1/3 of the upward and downward height of the inner chamber of hydraulic cylinder.
Further scheme is: above-mentioned pressure transducer is piezoelectric ceramic type pressure transducer.
The present invention has positive effect: (1) hydraulic vehicle of the present invention load transducer long working life, good reliability, measuring accuracy are high.(2) hydraulic vehicle load transducer of the present invention is applicable to the measurement of various axletree, wheel weight, and applicability is strong.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention; The annexation of load-bearing leaf spring assembly, vehicle bridge and the abs controller in itself and vehicle component is also show in figure.
Reference numeral in above-mentioned accompanying drawing is as follows:
Hydraulic cylinder 1, base 11, cylinder body 12, upper cover 13,
Hydraulic oil 2,
Piston 3, piston body 31, piston rod 32, wire guide 33,
O-ring seal 4,
Pressure transducer 5,
Spring assembly 6, spring 61, spring sheet-holder 62,
Be connected and fixed assembly 7, lengthen U-bolt 71, clamp nut 72, hexagonal nut 73, cylindrical positioning pins 74,
Vehicle bridge 8, pontic 81, spring perch 82,
Leaf spring assembly 9, leaf spring 91, spring clamp 92.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
(embodiment 1)
See Fig. 1, the hydraulic vehicle load transducer of the present embodiment, by hydraulic cylinder 1, hydraulic oil 2, piston 3, O-ring seal 4, spring assembly 5, pressure transducer 6 be connected and fixed assembly 7 and form.
Hydraulic cylinder 1 is steel integral piece.Hydraulic cylinder 1 is made up of all-in-one-piece base 11, cylinder body 12 and upper cover 13.Base 11 is square plate body part, and the surrounding bight of base 11 is respectively provided with one and installs fixing bolt hole; Cylinder body 12 is the column member of hollow, and upper cover 13 is discoid, and the center of upper cover 13 is provided with the manhole of upward and downward.Cylinder body 12 is connected with the upper surface one of base 11 by its lower surface; Cylinder body 12 is connected with the lower surface one of upper cover 13 by its upper surface.Hydraulic cylinder 1 is surrounded the inner chamber forming hydraulic cylinder 1 jointly by its base 11, cylinder body 12 and upper cover 13.
Hydraulic oil 2 is located in the inner chamber of hydraulic cylinder 1, and the liquid level of hydraulic oil 2 is about 1/3 of the upward and downward height of the inner chamber of hydraulic cylinder 1.
Piston 3 steel integral piece.Piston 3 is made up of the piston body 31 of integral connection and piston rod 32.Piston 3 is provided with wire guide 33.Piston body 31 is discoid, and the upper end of piston body 31 is provided with spring sheet-holder hole.Be provided with the sensor mounting groove to being recessed on below the middle part of piston body 31, and the shape of the shape of this sensor mounting groove and pressure transducer 5 adapts.This sensor mounting groove is used for setting pressure sensor 5.Piston rod 32 is round bar part, and the diameter compatible of the manhole on the external diameter of piston rod 32 and the upper cover 13 of hydraulic cylinder 1 closes.Piston rod 32 is connected with the upper surface one of piston body 31 by its lower surface.Wire guide 33 is manhole, and its main body is located on the axis of piston 3, the top fold of wire guide 33, and wire guide 33 upper outlet is positioned at the top of piston rod 32, and the lower outlet of wire guide 33 communicates with the sensor mounting groove of piston body 31.Wire guide 33 is for the routing electric wires of pressure transducer 5.
Piston 3 is located at the liquid level upper end of hydraulic oil 2, and piston 3 is slidably connected by the inwall of O-ring seal 4 with the cylinder body 12 of hydraulic cylinder 1 by its piston body 31; The top of the piston rod 32 of piston 3 protrudes upward the central circular through hole of the upper cover 11 of hydraulic cylinder 1.
Preferably piezoelectric ceramic type pressure transducer is adopted in pressure transducer 5 the present embodiment, weld with piston body 31, the gap sealant sealing between pressure transducer 5 and piston body 31 in the sensor mounting groove that pressure transducer 5 is arranged on the piston body 31 of piston 3.The electric wire of the electric signal of transmission pressure sensor 5 is electrically connected with the abs controller of automobile after the wire guide 33 of piston 3 is drawn.
Spring assembly 6 comprises spring 61 and spring sheet-holder 62.In the present embodiment, spring 61 preferably adopts volute spring.The internal diameter of the external diameter of spring 61 and the cylinder body 12 of hydraulic cylinder 1 adapts.Spring 61 is fixed on the upper end of piston body 31 by the spring sheet-holder hole of the upper end of the piston body 31 of piston 3 by spring sheet-holder 62.
Be connected and fixed assembly 7 to be made up of lengthening U-bolt 71, clamp nut 72, hexagonal nut 73 and cylindrical positioning pins 74.The two side arms body of U-bolt 71 is cylindrical bar body, and its underpart is provided with external thread, is provided with dowel hole in the middle part of it.Lengthen U-bolt 71 and be provided with 2 width; Clamp nut 72 and hexagonal nut 73 are respectively provided with 4 respectively.Cylindrical positioning pins 74 is the bar-shaped integral piece of steel cylinder, and cylindrical positioning pins 74 is provided with 2.
Vehicle bridge 8 is automobile self parts, and vehicle bridge 8 comprises pontic 81 and spring perch 82, and spring perch 82 is square plate body part, and the shape of the base 11 of aforesaid hydraulic cylinder 1 and the shape of size and spring perch 82 and size adapt.Spring perch 82 is installed fixing bolt hole place four of the base 11 to hydraulic cylinder 1 and is also provided with 4 corresponding bolts hole respectively.
Leaf spring assembly 9 is automobile self load bearing damping component.Leaf spring assembly 9 is made up of leaf spring 91 and spring clamp 92.Leaf spring 91 is made up of the steel plate strip arcuately that some stack from bottom to top, and the length of these some arc steel plate strip increases progressively from bottom to top successively, and in the present embodiment, the quantity of the arc steel plate strip of leaf spring 91 is 6.Leaf spring 91 some arc steel plate strip are connected and fixed integral by the spring clamp 92 arranging number as required.
The orlop steel plate strip of the upper end of the piston rod 32 of its piston 3 with the leaf spring 91 of the leaf spring assembly 9 of automobile, when using installation, is welded by the hydraulic vehicle load transducer of the present embodiment; The base 11 of hydraulic cylinder 1 is placed on the spring perch 82 of vehicle bridge 8, and four bolts hole on the base 11 of hydraulic cylinder 1 are alignd one by one with four bolts hole on the spring perch 82 of vehicle bridge 8,2 width being connected and fixed assembly 7 are lengthened U-bolts 71 by after fastening spring assembly 6 about its upper part, then 2 cylindrical positioning pins 74 is inserted respectively 2 width and lengthen in the dowel hole of U-bolts 71; 2 width lengthen 4 bottoms of U-bolts 71 and first to screw on after 1 clamp nut 72 more from top to bottom through after four bolts hole on the spring perch 82 of four bolts hole on the base 11 of hydraulic cylinder 1 and vehicle bridge 8 respectively, finally 4 hexagonal nuts 73 are tightened from bottom to top, 4 clamp nuts are tightened from the top down, thus the hydraulic vehicle load transducer of the present embodiment is fixedly mounted between the vehicle bridge 8 of automobile and leaf spring assembly 9.Pressure transducer 5 is electrically connected with the abs controller in automobile by electric wire.
The hydraulic vehicle load transducer of the present embodiment be mainly used in measured automobiles static time wheel-borne load situation of change.When the vehicle is stationary, the weight of vehicle body and load thereof is delivered on piston 3 by the lower end of the leaf spring 91 of leaf spring assembly 9, piston 3 is made to produce downward pressure, thus hydraulic oil 2 produces pressure, the pressure signal of fluid is passed to abs controller by wire by pressure transducer 5 by the pressure of hydraulic oil 2, and abs controller calculates the load of front and back wheel according to the pressure signal received.Abs controller according to the situation of front and rear wheel load, the damping force size of front and rear wheel during corresponding adjustment automobile brake, thus realize accurate control to the damping force of automobile front and rear wheel.Will be to
When running car, owing to jolting, piston 3 can produce and move up and down, and now the spring 61 of spring assembly 6 can play buffer action, and due to piston 3 up time, the sap cavity of hydraulic oil produces vacuum tightness, hinders the up of piston 3 in the lump with spring 61.
Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present invention.
Claims (4)
1. a hydraulic vehicle load transducer, is characterized in that: comprise hydraulic cylinder (1), hydraulic oil (2), piston (3), O-ring seal (4), spring assembly (6), pressure transducer (5) and be connected and fixed assembly (7);
Described hydraulic cylinder (1) is steel integral piece; Hydraulic cylinder (1) comprises base (11), cylinder body (12) and upper cover (13); Base (11) is square plate body part, and the surrounding bight of base (11) is respectively provided with one and installs fixing bolt hole; The column member that cylinder body (12) is hollow; Upper cover (13) is discoid, and the center of upper cover (13) is provided with the manhole of upward and downward; Cylinder body (12) is connected with the upper surface one of base (11) by its lower surface; Cylinder body (12) is connected with the lower surface one of upper cover (13) by its upper surface; Hydraulic cylinder (1) is surrounded the inner chamber forming hydraulic cylinder (1) jointly by its base (11), cylinder body (12) and upper cover (13); Hydraulic oil (2) is located in the inner chamber of hydraulic cylinder (1);
Piston (3) is steel integral piece; Piston (3) comprises piston body (31) and the piston rod (32) of integral connection; Piston body (31) is discoid, and the upper end of piston body (31) is provided with spring sheet-holder hole, is provided with the sensor mounting groove of fovea superior below the middle part of piston body (31); Piston rod (32) is round bar part, and the diameter compatible of the manhole on the external diameter of piston rod (32) and the upper cover (13) of hydraulic cylinder (1) closes; Piston rod (32) is connected with the upper surface one of piston body (31) by its lower surface; Piston (3) is located at the liquid level upper end of hydraulic oil (2), and piston (3) is slidably connected by the inwall of O-ring seal (4) with the cylinder body (12) of hydraulic cylinder (1) by its piston body (31); The top of the piston rod (32) of piston (3) protrudes upward the central circular through hole of the upper cover (11) of hydraulic cylinder (1); Piston (3) is also provided with that main body is positioned on the axis of piston (3), top fold and the wire guide (33) that upper outlet is positioned at the top of piston rod (32), lower outlet communicates with the sensor mounting groove of piston body (31);
Weld with piston body (31) in the sensor mounting groove that pressure transducer (5) is arranged on the piston body (31) of piston (3); Seam seal gum between pressure transducer (5) and piston body (31) seals;
Spring assembly (6) comprises spring (61) and spring sheet-holder (62); The internal diameter of the external diameter of spring (61) and the cylinder body (12) of hydraulic cylinder (1) adapts; Spring (61) is fixed on the upper end of piston body (31) by the spring sheet-holder hole of the upper end of the piston body (31) of piston (3) by spring sheet-holder (62);
Be connected and fixed assembly (7) and comprise lengthening U-bolt (71), clamp nut (72), hexagonal nut (73) and cylindrical positioning pins (74); The two side arms body of U-bolt (71) is cylindrical bar body, and its underpart is provided with external thread, is provided with dowel hole in the middle part of it; Lengthen U-bolt (71) and be provided with 2 width; Clamp nut (72) and hexagonal nut (73) are respectively provided with 4 respectively; Cylindrical positioning pins (74) is provided with 2 for the bar-shaped integral piece of steel cylinder, cylindrical positioning pins (74).
2. hydraulic vehicle load transducer according to claim 1, is characterized in that: the spring (61) of described spring assembly (6) is screw thread spring.
3. hydraulic vehicle load transducer according to claim 2, is characterized in that: the liquid level of described hydraulic oil (2) is 1/3 of the upward and downward height of the inner chamber of hydraulic cylinder (1).
4. hydraulic vehicle load transducer according to claim 3, is characterized in that: described pressure transducer (5) is piezoelectric ceramic type pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528484.8A CN103868574B (en) | 2012-12-11 | 2012-12-11 | Hydraulic vehicle load transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528484.8A CN103868574B (en) | 2012-12-11 | 2012-12-11 | Hydraulic vehicle load transducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103868574A CN103868574A (en) | 2014-06-18 |
| CN103868574B true CN103868574B (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210528484.8A Active CN103868574B (en) | 2012-12-11 | 2012-12-11 | Hydraulic vehicle load transducer |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316150A (en) * | 2014-11-11 | 2015-01-28 | 宁夏嘉翔自控技术有限公司 | Weighing sensing device of non-fixed stock bin |
| CN105333938B (en) * | 2015-11-30 | 2018-12-14 | 蚌埠大洋传感系统工程有限公司 | A kind of hydraulic weighing sensor of condenser type |
| CN107515035A (en) * | 2016-06-17 | 2017-12-26 | 上海势航网络科技有限公司 | Vehicle weighing sensing device and detection method |
| CN109632179A (en) * | 2019-01-04 | 2019-04-16 | 胡靖阳 | A kind of buffering hydraulic sensor with long service life |
| CN110588618A (en) * | 2019-09-20 | 2019-12-20 | 张瑗 | Load sensor for hydraulic vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200995650Y (en) * | 2006-12-21 | 2007-12-26 | 程海军 | Pressure-derived vehicle-body balance |
| CN201021186Y (en) * | 2007-01-13 | 2008-02-13 | 程海军 | Jack type bodywork weighing device |
| CN201922884U (en) * | 2011-02-28 | 2011-08-10 | 陕西重型汽车有限公司 | Helical spring balancing suspension for multi-axle off-road vehicle |
| CN202357881U (en) * | 2011-12-12 | 2012-08-01 | 江苏技术师范学院 | Overload detection system of vehicle |
| CN203053544U (en) * | 2012-12-11 | 2013-07-10 | 江苏理工学院 | Hydraulic vehicle load sensor |
-
2012
- 2012-12-11 CN CN201210528484.8A patent/CN103868574B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200995650Y (en) * | 2006-12-21 | 2007-12-26 | 程海军 | Pressure-derived vehicle-body balance |
| CN201021186Y (en) * | 2007-01-13 | 2008-02-13 | 程海军 | Jack type bodywork weighing device |
| CN201922884U (en) * | 2011-02-28 | 2011-08-10 | 陕西重型汽车有限公司 | Helical spring balancing suspension for multi-axle off-road vehicle |
| CN202357881U (en) * | 2011-12-12 | 2012-08-01 | 江苏技术师范学院 | Overload detection system of vehicle |
| CN203053544U (en) * | 2012-12-11 | 2013-07-10 | 江苏理工学院 | Hydraulic vehicle load sensor |
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| CN103868574A (en) | 2014-06-18 |
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Address after: 213015 Changzhou Province in the Clock Tower District, Jiangsu, Wu Road, No. 1801 Patentee after: Jiangsu University of Technology Address before: 213001 Changzhou Province in the Clock Tower District, Jiangsu, Wu Road, No. 1801 Patentee before: Jiangsu Teachers University of Technology |
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Effective date of registration: 20181213 Address after: 226600 Santang Industrial Park, Haian County, Nantong City, Jiangsu Province Co-patentee after: Jiangsu University of Technology Patentee after: Nantong Xun Da rubber and plastic Manufacturing Co., Ltd Address before: 213015 No. 1801 Wudao Road, Zhonglou District, Changzhou City, Jiangsu Province Patentee before: Jiangsu University of Technology |
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