FI128021B - Suspension arrangement for an underbody grader to be used in a vehicle, a working machine or equivalent, and vehicle, working machine or equivalent - Google Patents

Abstract

The suspension arrangement for a shaft blade (4) of a lower bite (21) to be used in a vehicle, work machine or equivalent comprises: - pivoting means (5) for swinging the shaft blade (4) from working position (I) to transport position (II) and back ; and - moving means (6, 7, 9, 14) arranged o to reduce the angle of application of the shaft blade before the shaft blade (4) is pivoted from working position (I) to transport position (II) or at the same time as the shaft blade (4) is pivoted from working position (I). to transport position (II), and o to increase the position of the shaft blade after the shaft blade (4) has been swung from transport position (II) to working position (I) or at the same time as the shaft blade (4) is swung from transport position (II) to working position (I). The moving means (6, 7, 14) are arranged to move the pivot (14) of the shaft blade (4) in a first lateral direction, the shaft blade (4) rotating in relation to a second joint (9) thereby reducing the angle of application, and in a second lateral direction. wherein the shaft blade (4) rotates relative to the second joint (9), thereby increasing the angle of application. The space of movement of the movable pivot joint (14) has been realized in a shape-limited member (7). Also a parallel independent requirement for a vehicle, work machine or equivalent.

Description

FIELD OF INVENTION Field of the Invention Field of the Invention Field of the Invention

The invention relates to hanging underbody grader or underbody scraper used in vehicles, implements and the like.

Technical background

Substrates are used, for example, to level sand roads and, in winter, to remove a polant from the road surface.

For example, Vuomet Oy's Finnish Patent 126587 discloses a sub-blade for such a purpose. The patent uses a base steel called a base plow. Because plow, in addition to snow plow, is an agricultural tool used for plowing, the blade should be considered a more descriptive name because of its intended use. The base blade is then an actual assembly of devices to be attached to a vehicle, implement, or the like, which also includes a blade under the vehicle, implement or the like, meaning the part of the base blade that contacts the road surface while pushing the material to be transported.

From the European patent application EP 3 173 536 of Pajakulma Oy there is known a mounting frame for hanging the blade of a blade.

The release angle of the blade blade blade means the angle between the blade blade and the horizontal normal to the vehicle, implement or similar longitudinal axis. With a feed angle of 0, the blade is transverse to the longitudinal axis.

Purpose of the invention

When the wheelbase of a vehicle, implement, or the like is short or short of the width of the blade used, such as in tractors or shorter trucks, the wheelbase may limit the available clearance. In particular, it may then be impossible to rotate the blade with a relatively large release angle from the working position to the transport position, since the blade disc catches in the ring. As a result, especially tractors and shorter trucks have to use a smaller clearance angle.

The problem with a smaller delivery angle is that under certain circumstances, when the delivery angle is inadequate to the circumstances, the material to be moved does not travel as desired and the blade at its worst discharges the material to be transported to the road or to the dock. In addition, the blade plate then pushes a large amount of material to be transported in front without dismantling it on the small side, which significantly increases the power requirement of the vehicle, machine or the like. This has a negative impact on the fuel economy and increases working time.

One of the objects of the invention is to enable an increase in the delivery angle of the blade used in the base blade. This function can be solved by a suspension arrangement according to the independent claim and by a vehicle, a work machine or the like according to the parallel independent claim.

The dependent claims describe advantageous aspects of the suspension arrangement.

Advantages of the Invention

The suspension arrangement of the blade blade used in the vehicle, machine or the like comprises pivoting means for rotating the blade blade from the working position to the transport position and back. In addition, the suspension arrangement comprises displacement means arranged to: o reduce the blade release angle before rotating the blade from the working position to the transport position or while rotating the blade from the working position to the transport position;

On the other hand, because of the transfer means, even when lowering the blade release angle from the working position to the transport position or before rotating the blade from the working position to the transport position, it is possible to use even a large delivery angle in the working position.

The displacement means are adapted to move the blade from the pivoting pivot to the first lateral direction, whereby the blade rotates with respect to the second joint, reducing the delivery angle and to the second lateral, with the blade plate rotating with the second joint, increasing the delivery angle. This is a mechanically relatively simple way of reducing and increasing the blade delivery angle by a relatively simple mechanism.

The maneuverability of the movable pivot joint is realized in a shape-limited member, for example, by providing the movable pivot joint to be movable in the slot.

When, in the suspension arrangement, the moving means are arranged to move the blade pivot pivot while the pivoting means are used, acceleration from the transport position to the working position and vice versa can be achieved without first having to simultaneously.

At its simplest, the movable pivot joint is a movable hinge pin or comprises a movable hinge pin.

The transfer means preferably comprise at least one hydraulic cylinder.

Advantageously, the transfer means are suspended on the base plate of the base blade. In this case, the frame plate is most preferably suspended by at least one telescopic structure, preferably at both edges, on the body of a vehicle, machine or the like.

Most preferably, the butt plate is suspended from the displacement means, for example, a hinge pin movable in the slot.

Preferably, the pivoting means comprises a hydraulic cylinder adapted to pivot the blade around a pivotally movable pivot pin.

It is advantageous to connect the hydraulic cylinder of the turning means and the hydraulic cylinder of the transfer means to the same hydraulic line.

Most preferably, the butt plate is secured to the body plate by a second joint, such as a bull's eye, which is fixed, whereby the fixed joint forms a pivot axis about which the pivoting plate is pivoted.

In a vehicle according to another aspect of the invention, a work machine or the like, a blade plate is attached to a suspension blade arrangement of any of the preceding claims.

drawing List

An embodiment of the invention will now be described with reference to the embodiment shown in the accompanying drawings. Drawings present:

FIG. 1 is an illustration of a tractor in which the blade blade of a base blade is suspended using a suspension arrangement;

Fig. 2 is a side elevational view of the suspension arrangement of Fig. 1 with the butt plate in the working position (position I);

Fig. 3 is a side elevational view of the suspension arrangement of Fig. 1 with the blade in the transport position (position II);

Figure 4 is a top view of the suspension arrangement shown in Figure 1-3; and

FIG

V-V).

The same reference numbers refer to the same technical parts throughout

FIG.

Detailed explanation

FIG. 1 shows an illustration of a tractor 20 in which the blade plate 4 of the base blade 21 is suspended using a suspension arrangement according to the invention. The position of the blade plate 4 is changed between the working position I and the transport position II (see also FIGs. 2 and 3) by means of a hydraulic cylinder 5. The hydraulic cylinder 5 is powered by the hydraulic system of the tractor 20.

In an exemplary embodiment of the invention, the blade 21 is mounted on a tractor 20. The blade 21, instead of the tractor, may be similarly used in another vehicle, implement, or the like.

The suspension arrangement comprises pivoting means 5 for pivoting the blade 4 from the working position I to the transport position II and back, and moving means (hydraulic cylinder 6, transfer slot 7, bull eye 9, hinge pin 14) arranged o to lower rotate from working position I to transport position II, and o increase the blade release angle after rotating blade 4 from transport position II to working position I or while rotating blade 4 from transport position II to working position I.

FIG. 2 shows a side view of the suspension arrangement of FIG. 1 with the blade plate 4 in the working position (position I), and FIG. 3 shows a side view of the suspension arrangement of FIG. 1 with the blade plate 4 in the transport position (position II).

The displacement means (hydraulic cylinder 6, displacement groove 7, hinge pin 14) are adapted to move the blade disc 4 from the pivot link (hinge pin 14) in the first lateral direction (i.e., forward), whereby the blade disc 4 rotates relative to the second articulation (bovine eye 9) wherein the butt plate 4 rotates with respect to said second joint (bull eye 9), increasing the delivery angle.

The displacement means (hydraulic cylinder 6, displacement groove 7, pivot pin 14) are preferably arranged to move the blade disc 4 from the pivoting pivot (pivot pin 14) simultaneously with the pivoting means (hydraulic cylinder 5).

Most preferably the pivoting hinge pin 14 is used as the pivot joint or comprises a movable pivot pin.

Advantageously, the displacement of the pivotable pivot joint 14 can be realized in the shape-limited member (in the displacement slot 7). The movable pivot joint (e.g., hinge pin 14) is preferably arranged to be movable in slot 7.

Most preferably, the displacement position of the pivotable pivot joint 14 is selected such that the pivotable pivot joint 14 is at the edge of the deformable member or slot 7 so that the edge of the pivotable member or slot 7 supports the forces exerted on the blade 4 from the working direction of the blade. Thus, when working on the blade plate 4, it is able to exert forces other than through the hydraulic cylinders 5, 6, which makes it possible to prevent the hydraulic cylinders 5, 6 from breaking.

The forces from the butt plate 4 are then directed primarily from the bottom of the slot 7 to the body plate 1.

In the suspension system, it is possible to implement a tractor-specific adjustment by limiting the space of movement of the pivotable pivot joint 14 in the form-limiting member or slot 7 by installing a block rear wheel (see FIG. 4).

The transfer means (hydraulic cylinder 6, transfer groove 7, hinge pin 14) most preferably comprise at least one hydraulic cylinder.

Most preferably, the hydraulic cylinder 6 is positioned such that the blade disc 4, when in working position, supports a movable pivot joint (hinge pin 14) for receiving or exerting forces on the blade disc 4 from the working direction of the blade disc 4.

The transfer means (hydraulic cylinder 6, transfer groove 7, hinge pin 14) are preferably suspended, made or supported on the base plate 1 of the base blade 21.

The body plate 1 may be suspended at least at one end by a telescopic structure 3 for stabilizing the body of a vehicle, machine or the like.

The blade plate 4 may be suspended from the displacement means (hydraulic cylinder 6, displacement groove 7, hinge pin 14), most preferably the hinge pin 14 movable in the groove 7.

The pivoting means (hydraulic cylinder 5) preferably comprises a hydraulic cylinder 5 arranged to pivot the blade plate 4 in a lateral (i.e. forward-to-rear) position about a movable hinge pin 14.

The hydraulic cylinder 5 of the turning means and the hydraulic cylinder 6 of the transfer means are preferably connected to the same hydraulic line.

The butt plate 4 is best secured to the body plate 1 by means of a second joint 9, such as a bull's eye, which is fixed, the fixed joint 9 forming a pivot axis about which the movable pivot joint 14 pivots the blade plate 4.

A vehicle, machine, or the like, has a blade plate 4 attached to the suspension arrangement of a blade 21 according to any one of the preceding claims.

The frame plate 1 is a plate (most preferably a plate 40 to 50 mm strong) or a plate structure. Its material is, for example, iron or steel.

The body plate 1 is attached at its rear by a bull's eye 8 to the auxiliary body 2 (see also FIG. 4). The subframe 2 is secured to the frame structure of the tractor 20, preferably by bolting connections to the passages 10 of the subframe 2.

At its front, the frame plate 1 is preferably secured on both sides by a preferably adjustable post 3 on the front of the tractor 20.

Preferably, the posts 3 are implemented as a telescopic structure. In this case, the structure of the pillar 3 preferably comprises a hydraulic cylinder used by the hydraulics of the tractor 20, the upper end of which is secured to a support structure 31 (e.g., a plate) which may be bolted to 61 on the tractor body 20). Correspondingly, the lower end 13 of the hydraulic cylinder is attached to the body plate 1 by means of, for example, a bull's eye.

The upper end 11 of the hydraulic cylinder may be protected by a first rhs tube and the lower end 13 may be protected by a second rhs tube. The piston of the hydraulic cylinder is then located within the second and the shaft within the second rhs pipe. Rhs tubes are most preferably cylindrical. Preferably, the tubes have a diameter such that both the hydraulic cylinder shaft and the hydraulic cylinder piston fit through both tubes, and the tubes also fit inside one another so that the shaft can be pushed in (to raise the frame plate 1) or out (to lower the frame plate 1).

The blade plate 4 is secured at one end (preferably left edge in right-hand traffic or left-hand traffic in left-hand traffic - i.e. centerline of the road) by bull eye 9 to body plate 1 and preferably with a hardened fitting.

The hydraulic cylinder 5 attached to the base plate 1 works best as a turning cylinder for the blade plate 4. The hydraulic cylinder 6 is attached to the base plate 1 from the attachment point 26 by bolt connection 12 and / or welding, or in some other suitable manner.

The operating principle of the suspension arrangement of the blade 21 is as follows:

When the blade plate 4 is in the transport position (position II), the posts 3 are up, as is the hydraulic cylinder 5.

In the transport position (position II), the position of the attachment point on the lower side on the hydraulic cylinder 6 is further in relation to the working position (position I). In other words, the squeegee pin 14 is moved forward in the transfer slot 7, whereby the butt plate 4 is adapted to pivot to the up position. Such a turn is made possible by the bull's eye at the center of the road 9.

Turning to the working position (position I), the hydraulic cylinder 5 is extended and at the same time the hydraulic cylinder 6 changes the position of the hub pin 14 of the blade disc 4 in the transfer slot 7 to the rear position, advantageously utilizing the entire wheelbase of the vehicle.

The working depth of the blade plate 4 is adjusted by adjustable posts 3. The adjustable posts 3 adjust the height position of the frame plate 1. The post 3 can, if necessary, tilt the blade plate 4 in the desired amount, depending on the inclination of the road surface. This is made possible by the bull's eye at the lower end of each post 3, for example at the lower end 13 of the hydraulic cylinder.

By means of the suspension arrangement according to the invention, the advantage is obtained that, regardless of the sign, the vehicle, the implement or the like can utilize the entire available wheelbase. At the same time, it is possible to ease the limitation due to the limited wheelbase with respect to the delivery angle as compared to the carrier blades having a fixed hinge line in the front-rear direction.

When it is possible to reduce the delivery angle from the working position to the transport position, the blade plate 4 can be used in the working position in a forward-rearward direction with a larger delivery angle relative to the base with fixed hinge line. The advantage of a larger release angle is that the passage of the material to be moved is improved and the dismantling of the butt plate 4 on the side of the landing is improved. At the same time, it is possible to reduce the amount of power required for pushing, which allows you to reduce fuel consumption and / or increase plowing speed.

Another significant advantage is that, when the position of the hinge pin 14 in the transfer slot 7 is adjustable, the butt plate 4 can be made taller and more straight than conventional, allowing for a larger space for material transfer. If the hinge line of the blade blade 4 is fixed in the front-rear direction, a larger convex angle may be desired to make the blade blade 4 more convex, thereby forcing the material out of the narrower space, which increases resistance.

The blade plate 4 is raised in the transport position when the position of the hinge pin 14 in the transfer slot 7 has to be displaced. The blade plate 4 can then be made more even. In addition, the suspension system itself is very low for the chassis, whereby the undercarriage 21 reduces the ground clearance of the vehicle, machine or the like less than the prior art undercarriage.

In addition, the suspension system is very simple, allowing the base blade 21 to be constructed cost-effectively and to increase its reliability.

The invention is not to be construed as being limited to the appended claims, but is to be understood to include all their legal equivalents and combinations of the embodiments disclosed.

20185161 prh 16-01-2019

20185161 prh 16-01-2019

List of reference numbers used 1 2 the frame plate subframe 3 post 4 puskulevy 5 hydraulic cylinder 6 hydraulic cylinder 7 siirtohahlo 8 sunny-side up 9 sunny-side up 10 turnaround 11 the hydraulic cylinder top 12 bolt connection 13 the hydraulic cylinder bottom 14 kingpin 20 tractor 21 ship blade 22 kiinnitysuioke 23 joint 24 the hydraulic cylinder arm 25 kiinnitysuioke 26 attachment point 31 the carrier structure 32 levike 33 attachment points 61 the connecting bolt 62 chassis (tractor) 63 bolt connection 64 attaching

Claims (15)

Claim: 1. Suspension arrangement for a shaft blade (4) of a lower bite (21) to be used in a vehicle, work machine or equivalent, comprising: - pivoting means (5) for pivoting the shaft blade (4) from working position (I) to transport position (II) and back; and moving means (6, 7, 9, 14) arranged to reduce the angle of application of the shaft blade before the shaft blade (4) is pivoted from working position (I) to transport position (II) or at the same time as the shaft blade (4) is pivoted from working position (I) to transport position (II), and o to increase the angle of application of the shaft blade after the shaft blade (4) has been pivoted from transport position (II) to working position (I) or at the same time as the shaft blade (4) is pivoted from transport position (II) to working position (I). The moving means (6, 7, 14) are arranged to move the pivot (14) of the shaft blade (4) in a first lateral direction, whereby the shaft blade (4) rotates relative to a second joint (9) thereby reducing the angle of application, and in a second lateral direction. the shaft blade (4) rotating relative to the second joint (9) thereby increasing the angle of application. The suspension arrangement is characterized by: the movement space of the movable pivot joint (14) has been realized in a shape-limited member (7). The suspension arrangement according to claim 1, wherein the movable pivot joint (14) is movably arranged in a cutter (7). Suspension arrangement according to claim 1 or 2, wherein the moving means (6, 7, 14) are arranged to move the pivot (14) of the shaft blade (4) while using the pivoting means (5). 20185161 prh 07-03-2019 Suspension arrangement according to any of claims 1-3, wherein the movable pivot joint (14) is a movable hinge pin or comprises a movable hinge pin. Suspension arrangement according to any of the preceding claims, wherein the moving position of the movable pivot joint (14) is chosen such that the movable pivot joint (14) is in the shape of a molded member or cut (7), so that the molded member or cutter (7) edge supports the movable pivot joint (14) against forces directed against the shaft blade (4) from the working direction of the shaft blade (4). The suspension arrangement according to claim 5, wherein the movement space of the movable pivot joint (14) in the molded member or cutter (7) is limited by mounting a piece which prevents the movement of the movable pivot joint (14) in the molded member or cutter (7). ) to limit the pivot position of the shaft blade (4), preferably because the shaft blade (4) should not be fixed to a wheel located the shaft blade (4) in the vehicle, the working machine or the like. The suspension arrangement according to any one of the preceding claims 1-6, wherein the moving means (6, 7, 14) comprise at least one hydraulic cylinder (6). Suspension arrangement according to claim 7 and the like of claims 5 and 6, wherein the hydraulic cylinder (6) is positioned so that when the shaft blade (4) is in working position, the molded member or cutter (7) supports the movable pivot joint (14) for receiving the forces directed against the shaft blade (4) from the working direction of the shaft blade (4) or for reducing or removing force components directed from such forces against the hydraulic cylinder (6). 20185161 prh 07-03-2019 Suspension arrangement according to any of the preceding claims, wherein the moving means (6, 7, 14) are suspended, made or supported in the base plate (1) of the lower bed (21). The suspension arrangement according to claim 9, wherein the frame plates (1) are suspended at least one edge thereof with a stabilizing telescopic structure (3) in the vehicle, work machine or equivalent chassis. The suspension arrangement according to claim 9 or 10, wherein the shaft blade (4) is suspended in the moving means (6, 7, 14), preferably in the movable hinge pin (14) of the cutter (7). The suspension arrangement according to any of the preceding claims, wherein the pivoting means (5) comprise a hydraulic cylinder (5) which is arranged to pivot the shaft blade (4) in the lateral direction around the movable hinge pin (14). The suspension arrangement according to claim 12, wherein the hydraulic cylinder of the swing means (5) and the hydraulic cylinder of the moving means (6) are connected to the same hydraulic line. Suspension arrangement according to any of the preceding claims, wherein the shaft blade (4) is fixed to the stem plates (1) by a second link (9), such as, for example, an ox eye, which is fixed, the fixed link (9) forming a pivot axis around which the movable pivot joint (14) pivots the shaft blade (4). Vehicle (20), working machine or equivalent, having a shaft blade (4) attached to a sub-bed (21) suspension arrangement according to any of the preceding claims. 1/3