EP1670992A1 - Spreader arrangement for a road machine - Google Patents
Spreader arrangement for a road machineInfo
- Publication number
- EP1670992A1 EP1670992A1 EP04762891A EP04762891A EP1670992A1 EP 1670992 A1 EP1670992 A1 EP 1670992A1 EP 04762891 A EP04762891 A EP 04762891A EP 04762891 A EP04762891 A EP 04762891A EP 1670992 A1 EP1670992 A1 EP 1670992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spreader
- arrangement according
- mixing chamber
- salt
- spreader arrangement
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 150000003839 salts Chemical class 0.000 claims abstract description 62
- 238000002156 mixing Methods 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000007480 spreading Effects 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 22
- 239000008187 granular material Substances 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 12
- 238000007599 discharging Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 235000015598 salt intake Nutrition 0.000 description 1
- -1 salt water Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H10/00—Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials ; Roadside storage of gritting or solid thawing materials; Permanently installed devices for applying gritting or thawing materials; Mobile apparatus specially adapted for treating wintry roads by applying liquid, semi-liquid or granular materials
- E01H10/007—Mobile apparatus specially adapted for preparing or applying liquid or semi-liquid thawing material or spreading granular material on wintry roads
Definitions
- a spreader arrangement for a road machine and a road machine including a spreader arrangement-
- the invention relates to a spreader arrangement for spreading a mixture of granulated material, preferably salt, and a liquid or a solution of salt and water, said arrangement including a funnel attached to a vehicle and leading granulated material from a dosing means on the vehicle to a rotatable spreader disc at the bottom part of the funnel.
- the object of the present invention is to provide a spreader arrangement rendering a more effective mixture of granulated material and liquid.
- a spreader arrangement of the above type is according to the invention characterised in that in connection with the spreader disc a mixing chamber is provided to which the granulated material and the liquid is fed.
- the mixing chamber renders a more effective mixing of the granulated material and the liquid than hitherto known.
- SUBSTITUTE SHEET terial may be provided, in the rotational direction of the spreader disc the liquid feeding means preferably being arranged behind the funnel for feeding of granulated material.
- the spreader disc may comprise a motor cone with a built-in motor, preferably a hydraulic motor.
- the hydraulic motor may drive the motor cone and thus a hub plate in the mixing chamber connected thereto.
- the hub plate may be provided with frictional members ensuring that a more uniform scattering of the mixture of salt and salt water.
- the frictional members may according to the invention be formed of mixer blades on the hub plate, preferably in form of involutes.
- the maximum height of the mixer blades is 4 mm.
- the mixing chamber may be rounded at the bottom to ensure that the material is conveyed up the chamber wall and then drops down onto the mixer blades on the hub plate.
- the mixing chamber may advantageously be provided with an inwardly inclined or inwardly curved wall, the material thereby falling back onto the mixer blades instead of being thrown out of the mixing chamber.
- the mixer blades may advantageously extend beyond the stationary part of the bottom of the chamber.
- the invention also relates to a road machine including a spreader arrangement according to the invention.
- FIG. 1 shows a spreader arrangement according to the invention comprising a telescopic funnel for granulated material and a spreader disc,
- Fig. 2 shows the spreader disc in connection with a stationary upper part of the mix- ing chamber
- Fig. 3 is a sectional view of a hydraulic motor built-in in the mixing chamber
- Fig. 4 shows the spreader disc in connection with the stationary upper part of the mixing chamber, the cover of the stationary upper part being removed,
- Fig. 5 illustrates how salt and salt water are mixed in the mixing chamber
- Fig. 6 illustrates the spreader arrangement in connection with a container for dis- charging granulated material and with a container for discharging liquid
- Fig. 7 is a side view of the container for granulated material shown in Fig. 6, the container for discharging liquid also being showed,
- Fig. 8 is a sectional view of the container shown in Fig. 7 provided with a feed worm at the bottom,
- Fig. 9 shows the electronic circuit for controlling the spreader disc, the liquid pump, the dosing means and the asymmetry
- Fig. 10 illustrates a screen around the rotating spreader disc.
- the spreader arrangement according to the invention shown in Fig. 1 to be arranged on a vehicle such as lorry includes a telescopic funnel 1 feeding granulated material such as salt from an electronically controlled dosing means on the vehicle. Via a bracket attached to the funnel 1 the spreader disc 5 is suspended at the lowermost part of the funnel 1.
- a relatively sta- tionary housing is provided, said housing having a cover 4 at the top with a comparatively large opening 4a for feeding granulated material such as salt and liquid such as salt water, respectively, a tube 1 a for feeding of the liquid being provided next to the funnel 1.
- a hub plate 2 is provided which is firmly connected to the spreader disc 5 and rotates therewith, confer Fig. 2.
- the hub plate 2 is provided with frictional members in form of involute- shaped blades 2a of a height of preferably 4 mm.
- the spreader arrangement communicates with a container 11 for discharging granulated material such as salt and a container 12 for discharging liquid such as salt water, confer Fig. 6.
- Fig. 8 shows the container 11 for discharging salt, a conveying means in form of a worm 13 being provided at the bottom of the container 11 for feeding the salt to the end of the container 11 with the spreader arrangement.
- the discharge of salt and the discharge of salt water are electronically controlled by means of the control circuit shown in Fig. 9 and are described below.
- the method of operation of the method of operation is as follows:
- a hydraulic motor - confer Figs. 2 and 3 - inserted from below drives a motor cone communicating with the hub plate 2 and the spreader disc 5 and rotating these elements.
- the mixing chamber and the associated cover 4 are, however, stationary during the rotation of the motor.
- the mixing chamber is arranged concentrically in relation to the spreader disc 5.
- Salt and salt water are now fed to the mixing chamber through the large opening 4a in the cover of the mixing chamber and conveyed by the mixer blades 2a on the ro- fating hub plate 2 to the wall 7 of the mixing chamber.
- the salt and the salt water obtain such a high velocity towards the wall 7 that the mixture is thrown up onto the wall 7 and then drops down onto the mixer blades 2a, confer Fig. 5.
- the salt and salt water are then conveyed once more to the wall 7 of the mixing chamber and follow the wall until the mixture reaches an opening 8 in the wall 7 and is thrown out there- from.
- the mixing chamber has an inwardly inclined or inwardly curved wall 7 - confer Fig. 5 - so as to ensure that the material drops back onto the mixer blades 2a before being thrown out through the said opening 8 in the wall 7.
- the salt hits the already added salt water in the mixing chamber, the salt hitting the hub plate 2 and the mixer blades 2a (salt water having been supplied shortly prior to the supply of salt).
- the salt and salt water are mixed by the mixer blades 2a not immediately con- veying all of the salt and all of the salt water to the wall 7 due to friction. As a result, stirring takes place by some of the salt and salt water being thrown over the mixer blades 2a before reaching the wall 7 of the chamber.
- the salt and salt water are conveyed along the wall 7 of the chamber which re- suits in further mixing.
- the salt and salt water remain inside the mixing chamber for 1/2 to 3/4 of a revolution before being thrown out onto the spreader disc 5 through the opening 8 in the wall 7 of the mixing chamber.
- the direction and speed of the material flow which is tangent in relation to the chamber wall 7 renders the advantage that the material being thrown out of the chamber has substantially the same tangential rate as the blades on the spreader disc 5.
- any splash of salt and salt water is minimised, whereby the risk of clog- ging of the spreader arrangement is significantly reduced.
- the blades 5a on the rotating spreader disc 5 are inclined in relation to vertical. This means that the material flow is gradually cut and thrown down into the rims between the spreader disc 5 and the blades 5a. The gradual cutting and throwing downwards against the rims effect that the material is spread out along the blades 5a. This in turn effects that the spread pattern obtains a wide angle of spread.
- the angle of the blades 5a in relation to horizontal is about 45-55°.
- a sharp edge between the spreader disc 5 and the blade 5a is to be provided, the material spreading otherwise not being effected in a satisfactory manner.
- An asymmetric setting may be provided by altering the position of the opening 8 in the wall 7 of the mixing chamber by turning the mixing chamber such that the position of the opening 8 is altered.
- the means for adjusting the angularity of the mixing chamber may for instance be formed of an articulated-rod mechanism which optionally may be operated manually.
- a servomotor may be used.
- Fig. 6 shows the spreader arrangement mounted in communication with an oblong V-shaped container 11 for feeding granulate
- Fig. 7 shows the same in a side view.
- a conveyor in form of a worm 13 is shown, said worm conveying the granulate to the funnel 1 arranged at the end of the container 11 and wherefrom it is discharged to the mixing chamber.
- a liquid container 12 is arranged wherefrom liquid is discharged to the mixing chamber at the same time via a hose and a pump.
- the actual flow of material is electronically controlled through a tachometer attached to for instance one of the rear wheels of the vehicle in question. Remote adjustments from the cab of the vehicle are employed, the driver adjusting the spreading range, the dosage per area unit, etc.
- Fig. 9 illustrates the electronic circuit adapted to adjust the dosage per area unit, the spreading range, the liquid pump and the symmetry setting.
- the supply of salt is controlled separately in relation to the supply of liquid. The adjustment can be effected quite quickly within about 1 second.
- the adjustment is performed by comparing an adjustment set value with the actual value, an error signal being generated which is used as a feedback signal in a feedback loop with negative feedback.
- the supply of liquid is adjusted in a corresponding manner by comparing an adjusted set value with the actual value, an error signal being generated at said comparison and used as a feedback signal in a feedback loop.
- the spreading range is adjusted by comparing a set value corresponding to the spreading range of the spreader disc, ie the rpm of the hydraulic motor, with the actual value so as to generate an error signal used in a feedback loop.
- the symmetry position is adjusted in a similar manner by comparing a set value corresponding to the desired symmetry position with the actual value so as to generate an error signal which via a feedback signal is used to adjust a separate servomotor controlling the angularity of the opening in the wall 8 of the mixing chamber.
- An optional, adjustable screen 15 - confer Fig. 10 - around the spreader disc 5 serves to further ensure that the spreading is effected away from the vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Road Paving Machines (AREA)
- Accessories For Mixers (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200301473A DK176222B1 (en) | 2003-10-07 | 2003-10-07 | Spreading arrangement for a weighing machine for spreading a mixture of granulated material and a liquid as well as a weighing machine comprising such a spreading apparatus |
PCT/DK2004/000671 WO2005033417A1 (en) | 2003-10-07 | 2004-10-05 | Spreader arrangement for a road machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1670992A1 true EP1670992A1 (en) | 2006-06-21 |
EP1670992B1 EP1670992B1 (en) | 2009-12-16 |
Family
ID=34400408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04762891A Active EP1670992B1 (en) | 2003-10-07 | 2004-10-05 | Spreader arrangement for a road machine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1670992B1 (en) |
AT (1) | ATE452243T1 (en) |
DE (1) | DE602004024698D1 (en) |
DK (1) | DK176222B1 (en) |
WO (1) | WO2005033417A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2826919A1 (en) | 2013-07-16 | 2015-01-21 | Epoke A/S | A spreading device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20060934A1 (en) | 2006-12-29 | 2008-06-30 | Giletta Spa | SPREADING UNIT FOR A VEHICLE SPINNING OF REBUFFER MATERIALS |
DE102011106086A1 (en) | 2011-06-08 | 2012-12-13 | Aebi Schmidt Nederland Bv | spreader |
US8574048B1 (en) * | 2012-07-10 | 2013-11-05 | Cnh America Llc | Combine spreader arrangement having independently positionable spreader disks |
KR101381230B1 (en) * | 2014-01-27 | 2014-04-04 | 이텍산업 주식회사 | Snow removal uniform spray device of sprinkler |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3419221A (en) | 1965-07-15 | 1968-12-31 | Swenson Spreader & Mfg Co | Material spreading and mixing apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT360070B (en) * | 1975-12-15 | 1980-12-29 | Kahlbacher Anton | DEVICE FOR SPREADING TRAFFIC AREAS |
DE3035360C2 (en) * | 1980-09-19 | 1982-12-30 | Willy 7715 Bräunlingen Küpper | Spreading vehicle with spreading devices for granulated and liquid thawing substances |
DE3937675A1 (en) * | 1989-11-13 | 1991-05-23 | Kuepper Weisser Gmbh | SPREADING DEVICE FOR SPREADING MOISTURIZED GRANULATES |
-
2003
- 2003-10-07 DK DK200301473A patent/DK176222B1/en not_active IP Right Cessation
-
2004
- 2004-10-05 WO PCT/DK2004/000671 patent/WO2005033417A1/en active Search and Examination
- 2004-10-05 DE DE602004024698T patent/DE602004024698D1/en active Active
- 2004-10-05 AT AT04762891T patent/ATE452243T1/en not_active IP Right Cessation
- 2004-10-05 EP EP04762891A patent/EP1670992B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3419221A (en) | 1965-07-15 | 1968-12-31 | Swenson Spreader & Mfg Co | Material spreading and mixing apparatus |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2826919A1 (en) | 2013-07-16 | 2015-01-21 | Epoke A/S | A spreading device |
Also Published As
Publication number | Publication date |
---|---|
DK200301473A (en) | 2005-04-08 |
DK176222B1 (en) | 2007-03-05 |
EP1670992B1 (en) | 2009-12-16 |
ATE452243T1 (en) | 2010-01-15 |
DE602004024698D1 (en) | 2010-01-28 |
WO2005033417A1 (en) | 2005-04-14 |
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