CN1015933B - Method and equipment for measuring net weight loaded on vehicles - Google Patents
Method and equipment for measuring net weight loaded on vehiclesInfo
- Publication number
- CN1015933B CN1015933B CN 85108836 CN85108836A CN1015933B CN 1015933 B CN1015933 B CN 1015933B CN 85108836 CN85108836 CN 85108836 CN 85108836 A CN85108836 A CN 85108836A CN 1015933 B CN1015933 B CN 1015933B
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- CN
- China
- Prior art keywords
- oil cylinder
- vehicle
- suspends
- mentioned
- resorption
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Abstract
The present invention relates to a method for measuring the weight of a load arranged in a vehicle warehouse, such as a self-unload truck having a large size. The method comprises the steps that the axial force acting on each suspended oil cylinder between a large beam of a vehicle body and a shaft is first detected, and then the measured axial force is compensated or corrected by the installation angle of a connecting rod of a connecting rod mechanism arranged around the shaft and the inclined angle of the vehicle body. The device for enforcing the method comprises at least four groups of suspended oil cylinders, a gradient sensor arranged on a vehicle beam, a calculating unit and a display unit, wherein each pressure sensor is arranged on each suspended oil cylinder; the calculating unit is suitable for receiving and calculating the signals of the gradient sensor and the pressure sensor; the display unit is suitable for receiving signals representing the calculating result, and the signals are transmitted by the calculating unit.
Description
The present invention relates to a kind of novelty, effectively measure and be contained in the device that vehicle freight house (particularly tipper freight house) is gone up method and this method of enforcement of load net weight.
Large-scale dumper is to be designed so that they just can run down the slope when driving auxiliary brake such as engine brake or the like effectively.In this case, be contained in for accurate measurement that the net weight of load is important on the vehicle.The control of auxiliary brake depends primarily on the weight that is contained in load on the vehicle.
Measurement is contained in that the known method of load weight is that tipper is placed on the weighbridge on the vehicle, measures dead weight, the tipper that is in loaded state is placed on the weighbridge again, measures gross weight, deducts the net weight that dead weight just can be obtained load then from gross weight.The disadvantage of this measuring method is the measuring operation difficulty and needs large scale weighbridge equipment, because the building site, dam does not have good basis, is difficulty or impossible so the large scale weighbridge in most of the cases is installed.
United States Patent (USP) has disclosed a kind of device No. 3428139, and this device replaces the equipment of above-mentioned use weighbridge, comprises a ultrasonic pulse frequency generator and a ultrasound reflector that is installed in a upper surface of being installed in below the truck chassis.On axle, wheel is supported in and the relative position of above-mentioned ultrasonic pulse frequency generator.This Design of device principle is along with the load on the vehicle increases, and the distance between ultrasonic frequency generator and the ultrasound reflector reduces, and the distance that is reduced is transformed into resulting numerical value the weight of load then by hyperacoustic acoustic measurement.
In addition, United States Patent (USP) is introduced a kind of device of measuring wheel weight and axle load with the shear strain sensor for No. 3878908.
Also have, United States Patent (USP) has proposed to show the weighing device that acts on every load on axle of vehicle that this device has a pair of electronic strainmeter that is supporting on the axletree that is installed at least for No. 3889767.
The measurement mechanism that above-mentioned United States Patent (USP) was described, they each all use vehicle as its ingredient.But, because the tipper that enters the building site need leave for slope or sloping floor usually, thus a kind of measuring method and device must be provided, even vehicle when the slope, also can be rapidly and measure the weight of load on the car exactly.All devices that above-mentioned United States Patent (USP) was described all can not satisfy these requirements.
The purpose of this invention is to provide and can measure the method and apparatus that is contained in load net weight on the vehicle rapid and exactly, this method comprises two steps.At first, the axial force of detection effect on each suspends oil cylinder, each oil cylinder that suspends all is installed in the vehicle body crossbeam and is adorning between the axle of wheel.Then, compensate and proofread and correct detected axial force, it and the pitch angle of linkage assembly connecting rod established angle and vehicle body are adapted, linkage assembly is installed in around the axle.
In order to finish above-mentioned task, according to the present invention, the method that provides a kind of measurement to be contained in load net weight on the vehicle, this method comprise two steps.At first, the axial force of detection effect on each suspends oil cylinder, each oil cylinder that suspends all is installed in the vehicle body crossbeam and is adorning between the axle of wheel.Then, compensate and proofread and correct detected axial force, make it and be installed in the connecting rod setting angle of axial linkage assembly and the angle of inclination of vehicle body adapts.
In order to finish above-mentioned task, according to the present invention, also provide the device of measuring vehicle load weight, this device comprises at least 4 oil cylinders that suspend, gradient sensor, pressure transducer, a calculating formula arithmetic element and a display unit.This oil cylinder that suspends is installed in the vehicle body crossbeam respectively and is adorning between a pair of axle of front and back wheel, gradient sensor is installed on the vehicle body crossbeam, pressure transducer is installed in respectively on each oil cylinder that suspends, calculating and arithmetic element receive and calculate by gradient sensor and the next output signal of pressure transducer transmission, display unit receives the signal by the expression result of calculation of calculating the output of exclusive disjunction unit, and shows.
Above-mentioned many advantages of the present invention, characteristics and other purpose for those skilled in the art, with reference to following detailed description with after having embodied the optimum structure enforcement accompanying drawing of the principle of the invention that is illustrated by embodiment, just will be things obviously.
Accompanying drawing has been represented concrete enforcement of the present invention.
Fig. 1 is the perspective illustration of the coupling part of expression tipper vehicle body crossbeam and wheel.
Fig. 2 is the longitudinal sectional view of oil cylinder of suspending.
Fig. 3 is that diagramming is used to measure the control system that is contained in load weight on the vehicle.
Fig. 4 is the key diagram of weight distribution on the expression vehicle.
Fig. 5 is the diagrammatic elevation view of vehicle back link mechanism.
Fig. 6 is the power distribution key diagram that expression acts on back link shown in Figure 5.
Illustrate in greater detail the present invention referring now to accompanying drawing.
Fig. 1 is the skeleton view of expression tipper vehicle body crossbeam and wheel coupling part.Vehicle body crossbeam 1 has the fore wheel 6 of installation and rear-mounted wheel 11, wheel 6 is connected with crossbeam with the oil cylinder 4,5 of preceding suspending by preceding left and right linkage assembly 2,3, wheel 11 by the left and right connecting rod 7,8 in back with after suspend oil cylinder 9,10 link to each other with crossbeam.Vehicle body crossbeam 1 also has gradient sensor or inclinometer 12.
The above-mentioned oil cylinder 4,5,9 and 10 that suspends has same profile and profile.As shown in Figure 2, each oil cylinder that suspends all has a cylindrical column casing 13, and cylindrical drum 13 inner push-rods 15 are equipped with a piston that is slidingly installed 14 outside, and limits all full of liquid oil for example of epicoele 16 and cavity of resorption 17, two chambeies thus.Epicoele 16 and cavity of resorption 17 maintain the connection by retaining valve 18 each other.The top nitrogen injection N of cavity of resorption 17
2, when external force acted on push rod 15, push rod extended to the outside or retracts in the cylindrical column casing 13.Reference number 15a represents a fixed orifice.
The oil cylinder 4,5,9 and 10 that suspends, each all is equipped with one first pressure transducer and one second pressure transducer respectively, therefore can detect the pressure of epicoele 16 and cavity of resorption 17.
Fig. 3 is that diagramming is used to measure the control system that is contained in load weight on the vehicle that is positioned at the slope.Pressure P
1And P
2Detect by first pressure transducer 19 that is contained in each suspend oil cylinder 4,5,9 and 10 and second pressure transducer 20, (on the slope axioversion angle of vehicle) detected and is input to by gradient sensor 12 and calculate in the exclusive disjunction unit 21 in the pitch angle, acts on the axial force F of suspend oil cylinder 4,5,9 and 10
1, F
2, F
3And F
4Can obtain by following formula.
F
1(F
2, F
3Or F
4)=K(P
1A
1-P
2A
2) ... (1)
In the formula, K is the coefficient of each oil cylinder that suspends, A
1Be the pressure bearing area of epicoele 16, A
2It is the pressure bearing area of cavity of resorption 17.
The example of a load net weight in the sloping floor measurement is contained in according to tipper freight house of the present invention, according to Fig. 4 by hereinafter explanation.
As Fig. 4 represent, some axial force F in the oil cylinder 4,5 that suspends before the load that acts on front-wheel 6 just acts on
1Application point and the horizontal range between the vehicle's center of gravity G with " a " expression, on the other hand, some axial force F in the oil cylinder 9,10 that suspends after acting on
3Application point and the horizontal range between the center of gravity G with " b " expression, between center of gravity G and the ground the distance with " h " expression, F
1And F
3Can obtain by following formula.
F
1＝（a COSφ+h Sinφ）Wt（a+b）……（2）
F
3＝（b COSφ-h Sinφ）Wt（a+b）……（3）
In the formula, Wt is illustrated in the general assembly (TW) of vehicle under the loaded-up condition.
Each oil cylinder 4,5,9 and 10 that suspends is installed two sleeve pressure sensor 19 and 20, and its reason is the error that causes owing to the liquid viscosity of considering in each oil cylinder.
Fig. 5 represents to be installed in linkage assembly 7 around each trailing wheel 11 or 8 shape.Can be clear that from Fig. 5 back link mechanism 7 or 8 comprises that first connects 30 and second connecting rods 31.First connecting rod 30 or second connecting rod 31 by the first, second, third, fourth, the 5th with the 6th pivot 32,33,34,35,36 with 37 with after the oil cylinder 9 or 10 that suspends be connected revolvably.
Fig. 6 is the key diagram that expression acts on the distribution of forces of back link mechanism shown in Figure 5.Briefly, distance L between the plane that the axis of oil cylinder 9 or 10 and the oil cylinder axis that suspends by trailing wheel center of gravity 11a and after being parallel to extend suspends after
1Expression; First connecting rod 30 and by center of gravity 11a and be parallel to distance L between the plane that first connecting rod 30 extends
2Expression; Second connecting rod 31 and by center of gravity 11a and be parallel to distance L between the plane that second connecting rod 31 extends
3Expression; The setting angle of second connecting rod 31 that is to say that the angle between second connecting rod 31 and the ground is represented with θ; The suspend setting angle of oil cylinder 9 or 10, also be exactly suspend oil cylinder 9 or 10 and ground between angle represent with φ; The angle of inclination on slope is represented with φ.
Below, the method that is contained in load net weight W on the vehicle of measuring is described.At first, the dead weight W that does not have vehicle under the loaded-up condition
0Measure with above-mentioned formula (1).
W
0＝F
10+F
20+F
30+F
40……（4）
Then, under loaded-up condition, gross combination weight Wt is measured by following formula.
Wt＝F
1t+F
2t+F
3t+F
4t……（5）
From Wt, deduct W
0Just draw the load weight W of vehicle, and then be transferred to display unit or indicator 22 and carry out the numeral demonstration.
As described above, axial force F
1, F
2Or F
3, F
4Compensate with detected inclination angle phi.
In this case, check dead weight W in advance
0And establish it for being zero point possible, with load weight W represent vehicle under the bearing load state weight W t and zero point weight W
0Between poor.
In addition, for the net weight of measuring vehicle more accurately, must consider the parameter as the force of rolling friction N that causes by detected inclination angle phi, act on the gravity g on the center of gravity G, suspend oil cylinder with respect to the angle φ on ground and second connecting rod 31 with respect to the angle θ on ground or the like, so that make dynamic system shown in Figure 6 satisfy requirement for dynamic balance.
The force of rolling friction N that is caused by detected angle of inclination φ can determine from following formula.
N＝WtSinφ……（6）
Acting on the gravity g of vehicle's center of gravity G and the relation between θ angle and the φ angle can be expressed from the next.
g（θ、ψ、φ）＝｛Sinθ（h+L
2Cosφ）+Sinφ（L
2Cosθ+L
3）｝……（7）
Relation vertical range h from center of gravity G to ramped surfaces and θ angle, ψ angle and the φ angle can be obtained by following formula.
h（θ、ψ、φ）＝Sinθ（L
2WtSinφ-LwSinφ-L
2wSinφ）+（L
2Cosθ+L
3）×（F
3-wCosφ）……（8）
In formula (8), symbol L represents the radius of each wheel.
The transient equilibrium relation of the dynamic system of representing at Fig. 6 can be drawn by following formula:
（f
1L
1+f
2L
2）-（f
3L
3+NL）＝0……（9）
f
1Sinψ+WCosφ+f
3Cosθ＝F
3……（10）
N-（WSinφ+f
3Cosθ+f
2+f
1Cosψ）＝0……（11）
Arrive in (11) symbol f in formula (9)
1The expression power on oil cylinder 9 or 10 that suspends after acting on, f
2Expression acts on the power of first connecting rod 30, f
3Expression acts on second power on the connecting rod 31.
According to above-mentioned formula, f
1Just can obtain by following formula:
f
1＝h（θ、ψ、φ）/g（θ、ψ、φ）……（12）
So, consider to compensate and proofread and correct, can show by display unit 22 with digital form rapidly and exactly in the weight of raising load on the anterior slope.
The axial force measurement that suspends on the oil cylinder can carry out by means of being installed in each foil gauge that many foil gauges on exterior cylinder 13 or the push rod 15 or use be installed on the pivot, pivot be rotationally connected each suspend oil cylinder and vehicle body.
As long as some exemplary embodiments and explanation just can prove purpose of the present invention, for those skilled in the art, this is clearly, if do not violate principle of the present invention and purpose, can also carry out various changes and modifications.
Claims (3)
1, the device of load net weight on a kind of measuring vehicle comprises a gradient sensor that is installed on the vehicle body crossbeam, it is characterized in that this device is made up of following each one:
(1) have at least 4 groups be installed in the vehicle crossbeam and adorning front and rear wheel the axle between the oil cylinder that suspends,
(2) each oil cylinder that suspends all is equipped with pressure transducer,
(3) one are adapted to receive and calculate the calculating exclusive disjunction unit that is transmitted output signal by above-mentioned gradient sensor and pressure transducer,
(4) display units that are adapted to receive by the expression result of calculation signal of aforementioned calculation exclusive disjunction unit transmission, and show.
2,, it is characterized in that the above-mentioned number that is installed in the pressure transducer on each oil cylinder that suspends is two at least according to the measurement mechanism of claim 1.
3, according to the measurement mechanism of claim 1, it is characterized in that above-mentioned each oil cylinder that suspends all has a cylindrical column casing, one is slidably mounted on the piston in the above-mentioned cylindrical column casing and piston top is connected with the vehicle body crossbeam, one by the cavity of resorption of determining between internal piston and the above-mentioned cylindrical column casing, the epicoele outside by piston and above-mentioned cylindrical column casing is determined, be full of pressure fluid in above-mentioned cavity of resorption and the epicoele, epicoele and cavity of resorption maintain the connection by retaining valve, and described cavity of resorption top charges into nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108836 CN1015933B (en) | 1985-12-10 | 1985-12-10 | Method and equipment for measuring net weight loaded on vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108836 CN1015933B (en) | 1985-12-10 | 1985-12-10 | Method and equipment for measuring net weight loaded on vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85108836A CN85108836A (en) | 1987-06-24 |
| CN1015933B true CN1015933B (en) | 1992-03-18 |
Family
ID=4796160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85108836 Expired CN1015933B (en) | 1985-12-10 | 1985-12-10 | Method and equipment for measuring net weight loaded on vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015933B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347529C (en) * | 2004-01-15 | 2007-11-07 | 株式会社小松制作所 | Loaded weight measurement method and loaded weight measurement device for dump truck |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259470B4 (en) * | 2002-12-19 | 2005-08-11 | Jungheinrich Aktiengesellschaft | Method for determining the load weight on the load bearing means of a hydraulic lifting device |
| FI118441B (en) * | 2005-01-05 | 2007-11-15 | Sandvik Tamrock Oy | The method of weighing the cargo of the transport vehicle, the transport vehicle and the bogie structure |
| CN102435454A (en) * | 2011-12-15 | 2012-05-02 | 株洲新通铁路装备有限公司 | Railway vehicle loading test device and method |
| CN102717801B (en) * | 2012-06-01 | 2015-06-03 | 内蒙古北方重型汽车股份有限公司 | Automatic backward skating preventing system of electric wheel non-road dumper in slope-starting |
| CN104454206A (en) * | 2013-09-18 | 2015-03-25 | 北汽福田汽车股份有限公司 | Automobile control method and system and automobile with control system |
| CN109263615B (en) * | 2018-09-17 | 2023-11-03 | 福州科杰电子衡器有限公司 | Horizontal lifting internet of things weighing method of truck-mounted static internet of things weighing device of freight car |
| CN109269617B (en) * | 2018-09-18 | 2024-03-19 | 福州科杰电子衡器有限公司 | Internet of things quantitative bucket capable of automatically calibrating level and provided with inclined chute |
| CN117553890A (en) * | 2024-01-12 | 2024-02-13 | 三一重型装备有限公司 | Dynamic weighing method and device for vehicle |
-
1985
- 1985-12-10 CN CN 85108836 patent/CN1015933B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347529C (en) * | 2004-01-15 | 2007-11-07 | 株式会社小松制作所 | Loaded weight measurement method and loaded weight measurement device for dump truck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85108836A (en) | 1987-06-24 |
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