FI98315B - Sand spreader for sanding vehicle and spreading process - Google Patents

Abstract

The invention relates to a sanding vehicle and incorporated sand spreader and a sanding process based on these. The sanding vehicle comprises a platform body 3, acting as a sand store 2, in the bottom 14 of which there are one or more openings 7, 20 directed beneath the vehicle and through which the sand can be fed in the form of a ribbon 9, 21 onto the foundation 10 to be sanded, such as a street or road surface. According to the invention, the vehicle comprises at least one roller 11, 17, which acts as a sand spreader and rotates around its axis and which has been installed by an opening 7, 20 in the bottom of the vehicle and has been provided with longitudinally directed projections 15 which push the sand through the opening. The roller 11, 17 can be arranged in a casing 5, 19, which lies beneath the bottom 14 of the platform body and opens out into the said sanding opening 7, 20. The vehicle can comprise a sanding roller 11 having the same width as the platform body 3 at the end of the platform body and, possibly in addition thereto or in place thereof, a sanding roller 17 in front of the rear wheel 18 of the vehicle, with which sanding roller the vehicle sands the road in its own right. <IMAGE>

Description

98315

The present invention relates to a sand spreader belonging to a sanding vehicle, which is formed by a roller rotating about its axis, mounted in an opening in the bottom of the vehicle platform leading under the vehicle and provided with longitudinal projections for pushing sand through the opening. In addition, the invention relates to a sanding vehicle equipped with such a spreader and to a method of sanding.

10 In winter conditions, sand has to be applied to roads, streets, yards, fields, etc. that are slippery with snow and / or ice. The conventional application method is to lay sand on a road or similar surface to be sanded from a narrow gap at the rear of the platform of a moving sanding vehicle while tilting the platform by means of its hydraulics. In addition, separate off-stage diffusers have been used to sprinkle sand flowing from the platform 15 over a wider area.

In addition, a sand spreader is known which consists of a roller rotating about its axis at the rear of the vehicle platform, provided with longitudinal projections for pushing sand from the platform onto the road surface into a substantially vehicle-wide sanding van.

20

The sand spreader according to the present invention comprises a vehicle at the bottom of the platform ·. v, but differs substantially from the above-mentioned prior art in that the roller at the bottom of the platform ettu mounted on it is located in front of the rear wheel of the vehicle.

i ':: 25 • ·: The invention achieves that the sanding vehicle sands the road except for other vehicles. also to itself. The road surface to be sanded is typically slippery and therefore makes it difficult for a relatively slow-moving sanding vehicle to advance, especially on uphills. The solution to the problem according to the invention is that the sand feeding roller 30 is mounted in an opening in the bottom of the vehicle platform, which is located in front of the rear wheel of the vehicle. Sand is then obtained directly in front of the vehicle's driving wheels, which decisively improves the vehicle's resilience in difficult ·; ··: weather conditions. The length of the roll may in this case correspond approximately to the rear wheel. width, and each of the rear wheels of the vehicle may be equipped with its own wheel. j. * 35 with front sanding roller. Alternatively, the roller may extend across the platform so that: · * it feeds sand from the widths of the platform in front of the rear wheels of the vehicle.

2,98315

According to the invention, the sand spreader may further comprise an opening in the pallet and a rotating roller mounted thereon, which are located at the rear of the pallet in a manner known per se. The length of the aperture and the roll in this case suitably roughly correspond to the width of the blade, resulting in a blade-wide sanding edge left behind by the vehicle.

The sanding according to the invention is in principle not dependent on the inclination of the platform. If the spreading rollers are both in front of the rear wheels of the vehicle and at the back of the platform, the platform can be tilted slightly with the sand running out, ensuring that the remaining 10 sand flows to the roller at the back of the platform. The projections of the roll can give the sand an impulse which promotes its disintegration on the road, which is further possible to promote by a suitable design of the projections.

The rotational movement of the roller can be achieved preferably by connecting it via a belt or similar force-1S transmission member to a hydraulic motor driven by the hydraulics of the vehicle.

According to the invention, the sand feeding roll is preferably arranged in an open housing located below the bottom of the pallet, towards both the pallet and the substrate to be sanded. The roller can then be used next to the housing, with a hydraulic motor-20 placed under the platform. The solution is also advantageous in terms of roll maintenance and possible bumps.

A sanding vehicle according to the invention with a sand spreader comprises, as is known per se, a platform for storing sand, the bottom of which has a transverse: ** [: opening in the direction thereof, on which a roller rotating about its axis is mounted, which is equipped with: * · *: 25 made with longitudinal projections for pushing sand from the opening onto the substrate to be sanded.

»·: According to the invention, the vehicle is characterized in that the holes in the bottom of the platform mounted on it are located in front of the rear wheel of the vehicle.

The method for applying sand to a road according to the invention, in which the application takes place from an opening made in the bottom of the platform of a mobile sanding vehicle by a roller with sand-pushing projections mounted therein and rotated about its axis during application, is characterized in that sand is fed in front of the rear wheels of the vehicle so that the vehicle also sands the road for itself.

] / 35 The invention will now be described in more detail by way of example with reference to the accompanying drawing, in which Fig. 1 98315 shows a sanding vehicle with a sand spreading roller in sanding work, Fig. 2 -II in Fig. 3), 5 Fig. 3 is a cross-sectional view of the rear of the platform of the vehicle of Fig. 1 at the sanding roller (section III-III in Fig. 2), Fig. 4 shows the rear wheel of the sanding vehicle according to the invention and the rear part of the platform in front of the rear wheel and also at the rear of the blade, and Fig. 5 is a partial cross-section of the blade at the front sanding roller of the rear wheel (section VV in Fig. 4).

15

The vehicle according to Fig. 1 is a sanding truck 1 comprising a pallet 3 for storing sand 2, a hydraulic cylinder 4 with which the pallet can be tilted and a sander driven by a hydraulic motor 6 fitted to a housing 5 at the rear of the pallet. 5 of the opening 7 20 as a curtain 8 of the width of the blade 3, which remains as a sanding van 9 on a substrate 10 to be sanded, such as a street or a road.

• »·

According to Figures 2 and 3, the sand spreader is formed by a Παιδί-like roller 11 arranged in the housing 5, which is driven by a hydraulic motor 6 connected to the car's hydraulic system via hoses 12 via a belt 13. The housing 5 forms, according to Figure 2: a recess made in the bottom 14 of the pallet 3, which is open and upwards in the direction of the pallet ··· · ...

that through the opening 7 downwards towards the substrate to be sanded. According to Figure 3, the length of the roll 11 in the copy 5 substantially corresponds to the width of the blade 3. The cylindrical roller 11 of circular cross-section is provided with sand-pushing projections which, as shown in Figures 2 and 3, are axial ribs 15 extending from the end to the end of the roller. " 5 to the bottom opening 7, from which the sand is discharged as a curtain to the road surface to be sanded.

···· * ·. *, * 35 Figures 4 and 5 show a sanding truck according to the invention comprising a platform 3 • · · ......

: · In addition to the rear sanding roller 11 and the hydraulic motor 6 driving it, there are shorter sanding rollers 17 driven by the motors 16 in front of the rear wheels 18 of the car. The roller 17 feeds sand from the bottom opening 20 of the housing 19 surrounding it to the sanding pad 4 98315 in front of the rear wheel 18 driving the car. It can be seen from Figure 5 that the length of the roll 17 and the width of the sanding web 21 produced by it, respectively, are slightly larger than the width of the wheel 18. In other respects, the structure and operation of the sanding roller 17 correspond to what has been described above with respect to the sanding roller 11 at the rear of the blade 3. By means of the front sanding rollers 17 of the rear wheels 18, the car thus sands the road for itself. the actual sanding task of the car.

It will be apparent to those skilled in the art that the various embodiments of the invention are not limited to those exemplified above but may vary within the scope of the appended claims. For example, instead of a hydraulically driven sanding roller 11, it may be a roller with a pneumatic drive. Likewise, the design and number of the sand-pushing projections of the sanding rollers 11 can be varied. Instead of the sanding rollers 17 placed in front of each rear wheel 18 of the vehicle, it is possible to place a single sanding roller with a width of blade 3 in front of the front wheels, which can be dimensioned according to Fig. 3, in which case it also takes care of the actual road sanding. It is also possible that, according to the invention, the sanding roller is used only in front of the rear wheels 18 of the vehicle to ensure the vehicle's own progress while the actual sanding takes place from behind the platform using 20 other sand application methods known per se.

9 · • 0 ···· • 1 • · .....

• · • · • · 1 ··· ... · '··· • 1 • · 9 Φ • · • · I ·· ·· · • · • «··· ···» ··· • · * • •• 0 • · · m 0

Claims (9)

A sand sprinkler housing in a sanding vehicle (1), the sand sprinkler consisting of a roller (17) rotating around its axis, mounted in an opening (20) in the bottom of the vehicle surface (3) which opens below the vehicle, and provided with longitudinal passage outlets (15) for pushing the sand (2) through the opening, characterized in that the opening (20) in the flat bottom and the roller (17) mounted therein are located in front of the rear wheels (18) of the vehicle. 15 Sand diffuser according to claim 1, characterized in that it further comprises an opening in the flange and a roller (11) mounted in it, which are located in the rear part of the flake (3). Sand diffuser according to claim 1 or 2, characterized in that the roller (11, 17) is fitted in a housing (5, 19) below the bottom of the flap, which opens even against the flake (3) * .v as the base (10) which is to be gritted. • · Sand diffuser according to any of the preceding claims, characterized in that the length of the roller: * * 25 (11.17) corresponds substantially to the width of the vehicle surface (3) and that the roller is mounted; ·· row in a sanding opening (7, 20) which extends across the bed. * · * · · ** a · e · · Sand diffuser according to any of claims 1-3, characterized in that in front of each rear wheel (18) in the vehicle is placed a roller (17) whose length is slightly greater than the width of the rear wheel. • · · • # » Sand diffuser according to any of the preceding claims, characterized in that the roller ·: ··: (11.17) has the shape of a circular cylinder, the surface of which is provided with projecting axial projections (15). T! 35 «· ·: · * 7. Sand spreader according to any of the preceding claims, characterized in that the roller (11, 17) for its rotation is coupled to a hydraulic motor (6, 16) driven by the hydraulics of the vehicle. 98315 Sanding vehicle (1) having a sheet (3) acting as a sand (2) stock, and having in the botin a transverse opening (20) in which is mounted a roller (17) rotating about its axis, which is provided with longitudinal outriggers (15) for pushing sand (2) through the aperture on the substrate (10) to be sanded, characterized in that the opening 5 (20) in the bottom of the flake and the roller (17) mounted therein lies in front of the vehicle's front wheel (18). ). A method of spreading sand (2) ρέ a path (10), the spreading being from the flake (3) in a moving sanding vehicle (1) through an opening (7, 20) in the bottom of the flake, with a roller (10). 11, 17) provided with sand-pushing outlets (15) mounted therein, the roller being rotated about its axis while spreading, characterized in that sand (2) is measured in front of the rear wheel (18) of the vehicle (1) so that the vehicle also sandes the road itself itself. Mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mm mm mm mm m mmm mm mm