FI20195392A1 - Plough for road maintenance - Google Patents

Abstract

The road maintenance plow (1) comprises a pin blade arranged in connection with or partially connected to the dozer blade (9) and the dozer blade (9), having a number of pins (13) attached to the pin blade body (10) so as to deviate from each other so that the longitudinal axes of the pins (13) at least two different angles (α1, α2) so that the pins (13, a2) facing the working direction of the dozer blade (9) make contact with the road surface to be treated earlier than the pins (13, a1) facing further away from the working direction.

Description

P38339FI00 1

Road maintenance plough

Field of invention

The invention is related to equipment and methods used in road maintenance, especially for removing dirt and leveling soil materials.

Technical background

Car traffic in particular causes congestion, which is still a challenge for road maintenance today. Piling refers to a layer of snow compacted under weight and at least partially frozen, which in practice appears as an icy ridge on the road. Deeper potholes in particular can cause unexpected dangerous situations, when the car can start to roll or not turn as desired if one of the tires gets stuck in a turn, such as when overtaking on the wrong side of a ridge. Removing the poles is heavy for the road maintenance equipment.

Road maintenance ploughs, more generally sand and snow ploughs, more specifically area ploughs, throwing ploughs, widening ploughs, articulated ploughs, butterfly harrows, side ploughs, sub-blades, tail plates or snow blowers are nowadays usually equipped with a wear plate to remove dirt. The road maintenance plow comprises a bulldozer plate, the wear plate attached to the lower edge receives the shocks and gradually wears out during use. When the wear plate starts to wear out, it is replaced with a new one before the wear wear begins to eat away at the actual bumper plate. A straight blade or grooved blade is often used as a wear plate. However, there may be bumps in the road, = when bumping into them, the wear plate may be damaged

N to replacement condition even from one collision.

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O One alternative to wear plates is the so-called using a pin cutter. > The pins of the dowel blade are attached to the butt plate in the so-called & 30 to pin body. The operating principle of the pins is presented

S in the European patent application publication EP 0 179 034 22.

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> In road maintenance plows, a relatively strong vertical force component has to be applied to the road. In this case, for example, the unevenness of the asphalt on the road can easily damage the wear plate, especially when driving at highway speed.

P38339FI00 2

The advantage of the pin blade is that if one or a few pins are damaged, it is enough to replace the damaged pin instead of replacing the entire wear plate.

In very difficult conditions, rotatable spiked blades are used to remove the plant. Sah-Ko Oy's Finnish patent 115782 describes a road maintenance device towed behind a tractor, in which a rotating spiked blade breaks up the soil.

The same company's Raiko& pole breaker (http://polannepois.fi/esite-pdf/Raiko-esite-2011-fin.pdf) is used in front of a truck or a wheel loader, where the rotating tine blade breaks up the pole and the road blade in a separate snow plow or base blade finishes the pole removal.

However, the Raiko& pole breaker takes up quite a lot of space, so it is practically impossible to attach it to, for example, a tractor that has a snow plow (e.g. area plow) in front, a sub-blade below and a snow thrower in the back. Similarly, it is practically impossible to attach such a pole breaker to a truck with a snow plow (e.g. a field plow) in front and a blade underneath. Because

In the video introducing the Raiko& pole breaker, a pair of machines is used, where the pole breaker is driven in front by a pulling or pushing tractor, followed by a tractor equipped with a road maintenance plow. However, this ties up machines and manpower.

When working with one vehicle such as a tractor or a truck, you still have to resort to = a road maintenance plow equipped with a wear plate or pin blade.

No. Task of the invention o The task of the invention is to improve the pollanthe removal ability of a > road maintenance plow equipped with a pin blade. x a

N 30 This task can be solved with a road maintenance plow according to independent claim 3. > o Advantages of the invention

N The road maintenance plow comprises a pin blade arranged in connection with or as part of the dozer plate and the dozer plate, with a different number of pins attached to the dowel body

P38339FI00 3 so that the longitudinal axes of the dowels form at least two different angles with respect to the working direction of the dozer plate, so that the dowels facing forward with respect to the working direction of the dowel plate make contact with the treated road surface earlier than the dowels facing further back with respect to the working direction. The inventor has found that in this case the clod removal ability of the road maintenance plow improves significantly. As one theoretical possible explanation for the improvement in the ability to remove dirt, which the applicant would not want to commit to, however, it can be assumed that the impulses resulting from the vehicle's momentum and weight are thus directed to the road surface by the pin steel of the road maintenance plow in a more temporally and spatially distributed manner, i.e. over a longer period of time.

In this case, the impulse transmitted by the pegs that hit the road surface first becomes greater than what it would be if all the pegs were at the same angle to the road surface.

The road maintenance plow is preferably attached to the vehicle by means of support members. In addition, the road maintenance plow preferably additionally comprises hydraulic turning means for adjusting the angle or vertical position of the pins by changing the angle or height of the bulldozer.

The dowel body preferably comprises at least two rows of holes or drillings in which the dowels are mounted, which holes or drillings are made at a different angle row by row so that the rows run in the longitudinal direction of the elongated dowel body. In this way, it is possible to divide the impulses transmitted to the road surface through the pins into two periods. The inventor has discovered the problem

The removal ability is thus significantly better than the state of the art

Compared to a road maintenance plow equipped with a pin blade according to N.

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? Preferably, the pins at different angles alternate - in the longitudinal direction of the elongated pin body. Thus

The work marks of the E 30 road maintenance plow can be improved.

N The road maintenance plow is preferably an area plow, throwing plow, widening

O plough, articulated plough, butterfly plough, side plough, sub-blade, tail plate or > snow thrower or a bulldozer device intended for earthmoving.

P38339FI00 4

Detailed explanation

The road maintenance plow 1 shown in the execution example of the drawing comprises a dowel plate 9 and a dowel blade arranged in connection with or as part of the dowel plate 9, with a number of pins 13 attached to the dowel body 10, offset from each other in such a way that the longitudinal axes of the dowels 13 form at least two different angles al, a2 with respect to the working direction of the dowel plate 9, so that the dowel plate 9 the pins 13, a2, which are directed forward in relation to the working direction, make contact with the treated road surface earlier than the pins 13, al, which are directed backwards in relation to the working direction.

The road maintenance plow 1 shown in the drawing is attached to the vehicle 3 by means of support members 8.

The road maintenance plow 1 preferably also comprises hydraulic turning means 11 such as at least one hydraulic cylinder or hydraulic cylinder arrangement for adjusting the angle or vertical position of the pins 13 by changing the angle or height of the dozer plate 9.

The pin body 10 shown in the drawing comprises at least two rows of holes or drillings, in which the pins 13 are mounted.

The holes or drillings are made in rows at different angles a1, a2 so that the rows run in the longitudinal direction of the elongated pin body 10. The pins 13 are fixed in a known manner, for example with a washer and a nut, through the part = that extends to the opposite side of the pin body 10 of the pin 13. The pin body 10 can be implemented in a special way

N preferably with, for example, a convex or partial rotation surface? in such a way that, for example, the washer and nut can = be tightened tightly.

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& 30 Pins at different angles al, a2 can alternate elongated

S in the longitudinal direction of the pin body 10.

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> The invention should not be understood to be limited i only to the accompanying patent claims, but should be understood to include all their legal equivalents and combinations of the presented embodiments.

P38339FI00

List of reference numbers: 1 pole groove 2 ring 3 frame beam 5 4 hydraulic turning device 5 base plate 6 hydraulic hose 7 hydraulic hose cover 8 support member 9 butt plate 10 pin body 11 bolt 12 nut 13 pin blade

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Claims (6)

P38339FI00 1 Patent claim: 1. Road underlay plow (1), which comprises a sliding blade (9) and a tenon blade arranged in connection with or as part of the sliding blade (9), is characterized in that the tenon blade has a number of pins (13) attached to the tenon blade body (10) in relation to each other, say that the longitudinal axes of the pins (13) form in relation to the working direction of the sliding blade (9) at least two different angles (al, a2), because the pins (13, a2) are directed further forward in relation to the sliding blade (9 ) working direction makes contact with the road surface to be maintained earlier than the drops (13, al) directed further back in relation to the working direction. 2. Road maintenance plow (1) according to patent claim 1, which is attached by means of support means (8) to a vehicle (3). 3. Road underfill plow (1) according to patent claim 2, which also includes hydraulic turning means (11) for adjusting the angle or vertical position of the pins (13) by changing the angle or height of the sliding blade (9). 4. Road maintenance plow (1) according to one of the preceding patent claims, wherein the pin cutter body (10) comprises at least two rows of holes or bores, in which the pins (13) are mounted, the holes or bores having been made in a row at different angles (al, a2) , said that the rows run in the longitudinal direction of the elongated tenon body Q 25 (10). N N 5. Road maintenance plow (1) according to one of the preceding = patent claims, wherein the studs (10) at different angles (al, a2) A alternate in the longitudinal direction of the longest stud cutting body (10) E. & 30 6. Road maintenance plow (1) according to any of the preceding S patent claims, which is an area plough, a throwing plough, a > spreading plough, a folding plough, a butterfly plough, a side plough, a planing blade, a dozer blade or a snow thrower, or a device with sliding blade intended for excavation.