FI78950C - Plow support and lifting device - Google Patents

Description

78950

Plow support and lifting device

The invention relates to a plow support and lifting device for supporting a plow from a truck bumper or the like, the device comprising a body part to be locked to the truck and a wing support to which the wing is locked, and most preferably a hydraulic cylinder for lifting the support. and wherein said slide members comprise a mating guide and 10 grooves. By plow is meant here mainly a snow plow, but also a leveling blade in summer use and various auxiliary machines can be used in connection with the invention.

Different types of front plows include oblique plow, area plow and tip plow. These are attached to the front bumper of the truck. 15 For quick attachment, attachment ribs are attached to the front bumper, to which the various plows are actually attached. The body of the plow support device is locked in the bumper by means of pins. The plow blade itself is attached to the support by a similar quick-attachment of the support device, which is typically articulated to the body portion 20. The articulation is generally implemented as a parallelogram support, in which the support is connected to the body part by means of two articulated arms. To raise the plow, the support device typically includes a hydraulic cylinder with which the support and with it the plow are raised. When plowing, the plow rests with its own 25 weights against the road. To this end, it includes footwear, which mainly bears its weight. Due to the bumps in the road, the plow must be able to rise freely. Only then will it be supported solely by the blade disc.

Finnish patent publication 74089 discloses 30 snow plows which are supported on the left side by means of an articulation system and on the right side by means of a vertical slide rail. During lifting, the wing rotates about two axes, in addition to the limited end of the slide rail side rising in its slot.

A reversible plow is known in which the plow wing mounting plate is articulated about a vertical axis for rotation on a support. In this case, the blade of the plow can be set to throw snow on either side. In the regional plows in use today, the wing is far ahead, as the 2,78950 parallelogram support takes the plow far forward anyway, and the swivel joint further increases this. The length of the parallelogram support is due to the fact that the articulated arms must be long in order to obtain a sufficient lifting height. The large length of the plow support device 5 firstly places a large load on the front list of the truck. On the other hand, steering the car becomes more difficult because the forces caused by the wing act from the end of the long lever arm and produce a large torque with respect to the front wheels. The object of the invention is to provide a front plow support and lifting device which solves the above-mentioned problems. This is achieved by implementing it according to claim 1. The skates require significantly less length of space than the parallelogram bracket, so the plow wing is brought close to the front bumper. The articulation of the wing mounting plate for rotation does not make this unreasonably long now, so in practice it is worthwhile to implement it. The skates have to be tilted backwards so that the plow can rise rapidly according to the road bumps and otherwise follow the road.

In the following, the invention is illustrated with reference to the accompanying drawings, which show some embodiments of the invention.

Figure 1 shows the plow in its working position seen from the side Figure 2 shows the obstacle crossing 25 Figure 3 shows the plow seen from above

Figure 4 shows the extreme positions of the plow blade

Figure 5 shows the plow wing seen from behind

Figure 6 shows the use of a leveling blade instead of a snow plow. of two opposite U-beams formed in the body part 6, which form a sliding groove 7, and of guides 5 arranged from the beams belonging to this support 35. The fastening part 2 li 3 78950 of the wing 1 is connected to the support 4 by means of a joint 3. The body part 6 is locked in the front bumper of the truck.

The device includes two hydraulic cylinders that are operated from the cab of the truck. If necessary, the cylinder 10 raises 5 the support 4 and with it the wing 1 up to the off position. When the plow is used, the notch 14 at the end of the cylinder arm 10 allows the wing 1 to follow the path. The blade plate 12 of the wing 1 does not normally have to carry the weight of the wing but this is performed by the Jalas 11, which slides along the road surface. The second cylinder 9 turns the wing 1 in the desired direction.

Figure 2 shows the behavior of the plow when encountering road elevations. The blade plate 12 of the wing 1 then has to momentarily carry the weight of the wing as it lifts the wing 1 over the obstacle. In the device according to Figures 1-5, the slide members 5, 7 are inclined from the vertical backwards by about 45 °.

Figure 4 shows the two operating positions of the wing, in which the snow is alternately plowed on either the right or left side. The wing 1 is locked to the fastening part 2 by means of a series of slots 13, which allows it to follow the road surface also in the lateral-20 direction, so that the differences in slope in the road do not affect the plowing. The support and lifting device according to the invention is also made advantageous by the possibility of using the leveling cloth 15 according to Figure 6. This is locked in place of the wing from its support frame 16, to which it is articulated. The cutting angle 25 of the leveling pad 15 can be adjusted by means of a setting rod 17.

The support and lifting device according to the invention is also particularly well suited for attaching and operating a brush device. The swivel support allows brushing on both sides. The source of pressurized oil required by the brush device is also readily available directly from the support and lifting device.