WO1993017308A1 - Device for the mobile weighing of an article - Google Patents

Device for the mobile weighing of an article Download PDF

Info

Publication number
WO1993017308A1
WO1993017308A1 PCT/NL1993/000042 NL9300042W WO9317308A1 WO 1993017308 A1 WO1993017308 A1 WO 1993017308A1 NL 9300042 W NL9300042 W NL 9300042W WO 9317308 A1 WO9317308 A1 WO 9317308A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
load cell
frame
article
processing unit
Prior art date
Application number
PCT/NL1993/000042
Other languages
French (fr)
Inventor
Henricus Franciscus Maria Van Der Velden
Original Assignee
Mettler-Toledo B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mettler-Toledo B.V. filed Critical Mettler-Toledo B.V.
Priority to DE4390688T priority Critical patent/DE4390688T1/en
Priority to GB9321767A priority patent/GB2270170B/en
Publication of WO1993017308A1 publication Critical patent/WO1993017308A1/en
Priority to SE9303409A priority patent/SE507109C2/en
Priority to DK931196A priority patent/DK119693D0/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/08—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles
    • G01G19/083—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for incorporation in vehicles lift truck scale
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/02—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto
    • B65F3/04—Linkages, pivoted arms, or pivoted carriers for raising and subsequently tipping receptacles
    • B65F3/041—Pivoted arms or pivoted carriers
    • B65F3/043—Pivoted arms or pivoted carriers with additional means for keeping the receptacle substantially vertical during raising
    • B65F3/045—Four-bar linkages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
    • B65F3/00—Vehicles particularly adapted for collecting refuse
    • B65F3/02—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto
    • B65F2003/022—Vehicles particularly adapted for collecting refuse with means for discharging refuse receptacles thereinto the discharging means comprising a device for determining the weight of the content of refuse receptacles

Definitions

  • the present invention relates to a device for the mobile weighing of an article fixed to a movable carrier, which carrier is fixed to a frame, and in which at least one load cell, connected to an external processing unit, is present between the carrier and the frame.
  • Such a device is known from German Offenlegungsschrift 3.89.169.
  • a load cell is fitted between the frame and the carrier, for the purpose of weighing a refuse bin.
  • the frame is fitted on the back of a refuse lorry.
  • the analog signal coming from the measuring or load cell is fed to a processing unit, for further processing.
  • the object of the present invention is to avoid this disadvantage. This object is achieved in the case of a device of the type described above in that means are present in the load cell for digitising the signal to be fed to the processing unit, and that the load cell comprises means for compensating for the moment applied by the article to the carrier. This means that the centre of gravity of the article to be weighed is no longer important.
  • a load cell with means for digitising is known per se from US Patent Specification 4,657,097-
  • the digitising ensures that the risk of faults occurring in the line between the load cell and the processing unit is completely removed.
  • the simpler processing of the output signal is also disclosed therein.
  • the device according to US Patent Specification 4,657.097 is not suitable for compensating for variation of the centre of gravity of the article to be weighed, as a result of which variation a changing moment is exerted on the carrier.
  • the means for compensating for this changing moment can comprise, for example, compensating strain gauges already present in such weighing devices, or possibly other added strain gauges which measure in directions other than the usual ones.
  • a hinge construction is fitted between the load cell and the frame.
  • the fact that the signal from the load cell is delivered in digital form means that it is possible to use various load cells in parallel, and to couple the signals coming from them by means of at least one bus coupling and feed them together to a processing unit. This makes it possible, for example in the case of a refuse lorry, to empty two bins at once, and to measure their weight simultaneously, while only one processing unit is necessary, and there is no risk of mutual interference between signals.
  • Fig. 1 shows diagrammatically the back of a refuse lorry with a refuse bin
  • Fig. 2 shows the diagram of the load cell with the processing device used in Fig. 1; and Fig. 3 shows a further embodiment of the device according to the invention.
  • Fig. 1 the back of a refuse lorry is shown diagrammatically and is indicated by 1.
  • Fixed to it is a parallelogram construction 2, on the end of which a frame 3 is fixed.
  • Frame 3 can be moved up and down, in a manner not shown in any further detail, by means of jack devices acting upon the parallelogram construction 2.
  • Frame _ is provided with a pivot point 4, in which one end of a load cell 5 is fastened so that it rotates freely.
  • the other end of load cell 5 is rigidly connected to carrier 6.
  • carrier 6 is provided with means for gripping a bin 8.
  • the signal coming from load cell 5 is transmitted by means of a line 9 and a coupling device 10 to a bus line 11, which is in turn connected to a processing unit 12.
  • the cell used here is a so-called digital cell, i.e. the analog signal coming from the strain gauges in the cell is already converted to a digital signal in the cell.
  • Means are also present in the cell for compensating for displacement of the centre of gravity of the bin.
  • the centre of gravity of bin 8 lies at point 13, due to the fact that a relatively heavy piece of material is present near the bottom end. It will be understood that if the centre of gravity 13 is moved further to the right in Fig. 1, this has an effect on the moment acting on the load cell. Compensation for the moment can be provided by, according to the invention, fitting in the load cell compensating devices, which can comprise compensating gauges already present in such load cells, or in particular compensating gauges fitted in other directions.
  • Fig. 3 shows a further embodiment of the invention.
  • the frame 15 is fixed immovably to the environment, and the carrier 16 is composed of two parts.
  • One part 17 of the carrier 16 is fixed immovably to part 15 by means of load cell 18, while the other part, indicated by 18, can be moved on the part 17 of the carrier.
  • load cell 18 can be used for, for example, all kinds of handling devices where moving articles have to be weighed. If, for example, its application is intended in slaughterhouses, a suspension hook 19 for carcasses can be fitted on part 18.
  • a suspension hook 19 for carcasses can be fitted on part 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Refuse-Collection Vehicles (AREA)
  • Measurement Of Force In General (AREA)
  • Refuse Collection And Transfer (AREA)

Abstract

Device for the mobile weighing of an article (8) fixed to a movable carrier (6). This carrier (6) is fixed to a frame (3), and at least one load cell (5) is present between the carrier (6) and the frame (3). The load cell (5) is connected to an external processing unit. Means are present in the load cell for digitising the signal to be fed to the processing unit (12). The load cell also comprises means for compensating for the moment applied to the carrier by the article.

Description

Device for the mobile weighing of an article
The present invention relates to a device for the mobile weighing of an article fixed to a movable carrier, which carrier is fixed to a frame, and in which at least one load cell, connected to an external processing unit, is present between the carrier and the frame.
Such a device is known from German Offenlegungsschrift 3.89.169. In this case a load cell is fitted between the frame and the carrier, for the purpose of weighing a refuse bin. In this case the frame is fitted on the back of a refuse lorry. The analog signal coming from the measuring or load cell is fed to a processing unit, for further processing.
Although such a device theoretically has great advantages compared with other conventional devices, due to its simple design, it appears that the device disclosed in the German Offenlegungsschrift does not work in practice. Firstly, the bin will always be moving relative to the frame, unless one waits an unacceptably long time in order to reach a completely stable state of the bin. Secondly, there will be the considerable risk that faults on the line acting as an antenna between the load cell and the processing unit will affect the measured result. The signal coming from the load cell is extremely weak. The third drawback is that a different reading is obtained depending on the position of the centre of gravity of the bin, because the influence of the moment exerted on the carrier cannot be compensated for by the load cell known from this German Offenlegungsschrift. This means that a different reading is obtained if a heavy article is lying at the back or front of the bin.
The object of the present invention is to avoid this disadvantage. This object is achieved in the case of a device of the type described above in that means are present in the load cell for digitising the signal to be fed to the processing unit, and that the load cell comprises means for compensating for the moment applied by the article to the carrier. This means that the centre of gravity of the article to be weighed is no longer important.
A load cell with means for digitising is known per se from US Patent Specification 4,657,097- The digitising ensures that the risk of faults occurring in the line between the load cell and the processing unit is completely removed. The simpler processing of the output signal is also disclosed therein. However, the device according to US Patent Specification 4,657.097 is not suitable for compensating for variation of the centre of gravity of the article to be weighed, as a result of which variation a changing moment is exerted on the carrier. The means for compensating for this changing moment can comprise, for example, compensating strain gauges already present in such weighing devices, or possibly other added strain gauges which measure in directions other than the usual ones.
In order to make the influence of the moment work in one direction, according to an advantageous embodiment of the invention, a hinge construction is fitted between the load cell and the frame.
The fact that the signal from the load cell is delivered in digital form means that it is possible to use various load cells in parallel, and to couple the signals coming from them by means of at least one bus coupling and feed them together to a processing unit. This makes it possible, for example in the case of a refuse lorry, to empty two bins at once, and to measure their weight simultaneously, while only one processing unit is necessary, and there is no risk of mutual interference between signals.
Although the invention is described above for use at the back of a refuse lorry, it must be understood that numerous other possibilities exist for use of the invention. For example, it is possible to fix the frame immovably and to construct the carrier from two parts which are movable relative to each other. In this case, one part of the carrier will be connected to the frame by means of the load cell, while the other part is movable relative to the first part of the carrier. All kinds of fixing devices, such as hooks, may be fitted on the movable part of the carrier.
The invention will be explained in greater detail below with reference to a number of examples of embodiments shown in the drawings, in which:
Fig. 1 shows diagrammatically the back of a refuse lorry with a refuse bin;
Fig. 2 shows the diagram of the load cell with the processing device used in Fig. 1; and Fig. 3 shows a further embodiment of the device according to the invention.
In Fig. 1 the back of a refuse lorry is shown diagrammatically and is indicated by 1. Fixed to it is a parallelogram construction 2, on the end of which a frame 3 is fixed. Frame 3 can be moved up and down, in a manner not shown in any further detail, by means of jack devices acting upon the parallelogram construction 2. Frame _ is provided with a pivot point 4, in which one end of a load cell 5 is fastened so that it rotates freely. The other end of load cell 5 is rigidly connected to carrier 6. At the top end 7. carrier 6 is provided with means for gripping a bin 8. As can be seen from Fig. 2, the signal coming from load cell 5 is transmitted by means of a line 9 and a coupling device 10 to a bus line 11, which is in turn connected to a processing unit 12.
The cell used here is a so-called digital cell, i.e. the analog signal coming from the strain gauges in the cell is already converted to a digital signal in the cell. Means are also present in the cell for compensating for displacement of the centre of gravity of the bin. As shown in Fig. 1, the centre of gravity of bin 8 lies at point 13, due to the fact that a relatively heavy piece of material is present near the bottom end. It will be understood that if the centre of gravity 13 is moved further to the right in Fig. 1, this has an effect on the moment acting on the load cell. Compensation for the moment can be provided by, according to the invention, fitting in the load cell compensating devices, which can comprise compensating gauges already present in such load cells, or in particular compensating gauges fitted in other directions. Through the digitisation of the signal on line 9. it is possible to fit various coupling elements 10 in parallel, and to feed the signal by means of one bus line to processing unit 12. It is therefore possible in the case of, for example, a lorry to use different load cells for weighing separately or simultaneously two bins which are to be emptied essentially simultaneously, or for weighing a heavy bin.
Fig. 3 shows a further embodiment of the invention. In this case the frame 15 is fixed immovably to the environment, and the carrier 16 is composed of two parts. One part 17 of the carrier 16 is fixed immovably to part 15 by means of load cell 18, while the other part, indicated by 18, can be moved on the part 17 of the carrier. Such a device can be used for, for example, all kinds of handling devices where moving articles have to be weighed. If, for example, its application is intended in slaughterhouses, a suspension hook 19 for carcasses can be fitted on part 18. In the case of the embodiment shown in Fig. 3. it is possible to fit a number of load cells next to each other, with the result that the weighing location becomes less critical, and a greater weight can be carried. It is also possible in the case of the embodiment shown here to feed the digital signals coming from the various load cells to a processing unit in the manner shown in Fig. 2. In the case of this embodiment, the position of the centre of gravity of the article suspended from hook 19 can be varied. This can be brought about either by the article itself, or through the fact that bearing part 18 is movable in length.
Although a number of the potential applications of the present invention are given above, it must be understood that numerous modifications can be made thereto. For example, it is possible to use further hinge constructions, through which it is ensured that compensation is only for moment in one direction. This means that the load cell described above can be relatively simple in design.

Claims

Claims
1. Device for the mobile weighing of an article fixed to a movable carrier, which carrier is fixed to a frame, and in which at least one load cell, connected to an external processing unit, is present between the carrier and the frame, characterised in that means are present in the load cell for digitising the signal to be fed to the processing unit, and in that the load cell comprises means for compensating for the moment applied to the carrier by the article.
2. Device according to Claim 1, in which a hinge construction is fitted between the load cell and the frame.
3. Device according to one of the preceding claims, in which various load cells are present, and the signal coming from them is fed to the processing unit by means of at least one bus coupling.
4. Device according to one of the preceding claims, in which the carrier is designed to grip bins.
5- Device according to Claim 4, in which the frame is connected to a vehicle.
6. Device according to one of Claims 1 - 4, in which the frame is fixed and the carrier or the centre of gravity is movable relative thereto.
PCT/NL1993/000042 1992-02-27 1993-02-26 Device for the mobile weighing of an article WO1993017308A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE4390688T DE4390688T1 (en) 1992-02-27 1993-02-26 Device for mobile weighing of an object
GB9321767A GB2270170B (en) 1992-02-27 1993-02-26 Device for weighing a moving article
SE9303409A SE507109C2 (en) 1992-02-27 1993-10-15 Device for mobile weighing of an object
DK931196A DK119693D0 (en) 1992-02-27 1993-10-25 MOBILE WEIGHTING APPLIANCE OF AN ITEM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9200362A NL9200362A (en) 1992-02-27 1992-02-27 DEVICE FOR MOBILE WEIGHING OF AN OBJECT.
NL9200362 1992-02-27

Publications (1)

Publication Number Publication Date
WO1993017308A1 true WO1993017308A1 (en) 1993-09-02

Family

ID=19860488

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1993/000042 WO1993017308A1 (en) 1992-02-27 1993-02-26 Device for the mobile weighing of an article

Country Status (9)

Country Link
BE (1) BE1006154A3 (en)
CH (1) CH688423A5 (en)
DE (2) DE9203099U1 (en)
DK (2) DK119693D0 (en)
FR (1) FR2688062B3 (en)
GB (1) GB2270170B (en)
NL (1) NL9200362A (en)
SE (1) SE507109C2 (en)
WO (1) WO1993017308A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028298A1 (en) * 1994-04-15 1995-10-26 Raoul Hamilton Device for emptying and weighing of a garbage disposal can
CN110921160A (en) * 2019-12-05 2020-03-27 江苏悦达专用车有限公司 Dumping device of garbage truck
EP3792603A1 (en) 2019-09-12 2021-03-17 Daprox Ab A weighing arrangement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200362A (en) * 1992-02-27 1993-01-04 Mettler Toledo Bv DEVICE FOR MOBILE WEIGHING OF AN OBJECT.
AUPM969794A0 (en) * 1994-11-28 1994-12-22 Kellenbach, Arthur Method and apparatus for weighing garbage
CN111559597B (en) * 2020-05-25 2021-08-24 长沙中联重科环境产业有限公司 Intelligent automatic feeding mechanism and control method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046692A2 (en) * 1980-08-25 1982-03-03 Weigh-Tronix, Inc. Fork lift scale
EP0186820A2 (en) * 1984-12-28 1986-07-09 Pontech Gesellschaft für technologische Entwicklungen mbH Method and apparatus to determine the weight of a quantity of material, e.g. refuse, by emptying a receptacle into a collecting vehicle
US4657097A (en) * 1984-02-13 1987-04-14 Reliance Electric Company Load cell
DE3819169A1 (en) * 1988-06-04 1989-12-07 Pfister Gmbh Method and system for weighing the content of refuse bins
DE3910791A1 (en) * 1989-04-04 1990-10-11 Bernd Dipl Ing Merle Method and device to determine variable removal charges for rubbish removal
EP0402352A1 (en) * 1989-06-08 1990-12-12 M-U-T Maschinen-Umwelttechnik- Transportanlagen Gesellschaft M.B.H. Weighing system for refuse material
DE9203099U1 (en) * 1992-02-27 1992-05-14 Mettler-Toledo B.V., Tiel Device for mobile weighing of an object
EP0521847A2 (en) * 1991-07-05 1993-01-07 Wolfgang Dr. Riha System for determining weight and volume of refuse

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0046692A2 (en) * 1980-08-25 1982-03-03 Weigh-Tronix, Inc. Fork lift scale
US4657097A (en) * 1984-02-13 1987-04-14 Reliance Electric Company Load cell
EP0186820A2 (en) * 1984-12-28 1986-07-09 Pontech Gesellschaft für technologische Entwicklungen mbH Method and apparatus to determine the weight of a quantity of material, e.g. refuse, by emptying a receptacle into a collecting vehicle
DE3819169A1 (en) * 1988-06-04 1989-12-07 Pfister Gmbh Method and system for weighing the content of refuse bins
DE3910791A1 (en) * 1989-04-04 1990-10-11 Bernd Dipl Ing Merle Method and device to determine variable removal charges for rubbish removal
EP0402352A1 (en) * 1989-06-08 1990-12-12 M-U-T Maschinen-Umwelttechnik- Transportanlagen Gesellschaft M.B.H. Weighing system for refuse material
EP0521847A2 (en) * 1991-07-05 1993-01-07 Wolfgang Dr. Riha System for determining weight and volume of refuse
DE9203099U1 (en) * 1992-02-27 1992-05-14 Mettler-Toledo B.V., Tiel Device for mobile weighing of an object

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028298A1 (en) * 1994-04-15 1995-10-26 Raoul Hamilton Device for emptying and weighing of a garbage disposal can
EP3792603A1 (en) 2019-09-12 2021-03-17 Daprox Ab A weighing arrangement
CN110921160A (en) * 2019-12-05 2020-03-27 江苏悦达专用车有限公司 Dumping device of garbage truck

Also Published As

Publication number Publication date
CH688423A5 (en) 1997-09-15
FR2688062A1 (en) 1993-09-03
DK9300477U3 (en) 1993-10-28
SE9303409D0 (en) 1993-10-15
DK119693A (en) 1993-10-25
FR2688062B3 (en) 1994-06-03
DK119693D0 (en) 1993-10-25
BE1006154A3 (en) 1994-05-24
SE9303409L (en) 1993-10-15
GB2270170A (en) 1994-03-02
SE507109C2 (en) 1998-03-30
NL9200362A (en) 1993-01-04
DE9203099U1 (en) 1992-05-14
GB2270170B (en) 1995-03-22
DE4390688T1 (en) 1994-05-05
GB9321767D0 (en) 1993-12-22

Similar Documents

Publication Publication Date Title
US5717167A (en) Device and method for weighing solid waste with an angle-correction scale
CA2061071A1 (en) On-board weighing system for a vehicle
US7514639B2 (en) Apparatus, system and method for weighing loads in motion
CA2288417A1 (en) Load weighing system for heavy machinery
CA2075816A1 (en) Container scale
EP0483922A3 (en) Means of transport, such as garbage truck provided with means for lifting, tilting and weighting containers
WO1993017308A1 (en) Device for the mobile weighing of an article
CA2186094A1 (en) Dynamic load weighing system
US5215155A (en) Weighing device for containers to be moved by an arm system
US4350218A (en) Weigh-platform, resting on load measuring support points
CN112378500A (en) Conveying equipment capable of measuring weight of material and implementation method thereof
CN2148316Y (en) Full suspension electronic conveyer-belt weigher
WO2002097381A1 (en) Dynamic weighing system
CZ187993A3 (en) Device for emptying large-volume containers for refuse
CN205209616U (en) Forklift scale
CN2630218Y (en) Electronic gib-head scale
NL8902120A (en) APPARATUS AND METHOD FOR WEIGHING A CONTAINER TO BE TRANSPORTED ON A MEANS OF TRANSPORT.
CN213367330U (en) Wagon balance junction box cover
CN2241327Y (en) Electronic belt scale with suspended scale rack
RU114046U1 (en) CAPTURE DEVICE WITH FUNCTION OF WEIGHING WEIGHTS WHEN LOADING
CN105403299A (en) Forklift scale
JPH052248B2 (en)
CN207816433U (en) A kind of container packing mould turnover weighing system
EP0181147B1 (en) Weighing apparatus
CN2274767Y (en) Weighing and feeding device of balancing scale

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CH DE DK GB SE

WWE Wipo information: entry into national phase

Ref document number: 93034098

Country of ref document: SE

WWP Wipo information: published in national office

Ref document number: 93034098

Country of ref document: SE