DK176929B1 - Machine - Google Patents

Description

DK 176929 B1 Vehicle

FIELD OF THE INVENTION

The present invention relates to a machine, preferably an excavator, a field machine, a bush crawler or a demolition machine comprising: - a chassis comprising a frame, - propulsion means on each side of a central plane through the frame, which is parallel to the direction of travel of the machine , - an upper part arranged over the undercarriage and comprising a driver's seat, - a tilting arrangement located between the undercarriage and the upper part for tilting the upper part relative to the undercarriage around a tilting axis through the machine, - at least one telescopic arm on each side of the middle plane, which telescopic arms is mounted between the frame and the propulsion means for changing the distance between the propulsion means.

15 In this application, the tilt axis means an axis which is parallel to the direction of travel of the undercarriage and which passes through at least part of the machine.

By mid plane in the present application is meant a plane substantially through the center of the frame, which plane is parallel to the direction of travel of the undercarriage. The upper part may also have a center plane.

By cross-axis in the present application is meant an axis which passes through the frame and which is orthogonal to the middle plane through the frame.

BACKGROUND OF THE INVENTION In connection with the use of various self-propelled machines with a driver's seat, such as excavators, mowers, bush crawlers, demolition machines, it is often found that they have to operate in hard-to-reach areas on a sloping surface with an often different bearing capacity. This gives rise to several disadvantages.

30 - The work becomes less comfortable for the operator of the machine, the driver being affected by a gravitational force acting in the lateral direction. This force will seek to force the driver to slide out of the seat. The driver thus has to counteract the force all the time to stay in the seat while working on an inclined surface.

- For a machine with an arm with a working tool, it becomes very difficult to work in a vertical direction when the machine is on an inclined surface, this is necessary 5 for example an excavator working close to an obstacle, such as a building. Unless the machine is completely horizontal, it will not be possible to dig a vertical trench next to the building when the machine is inclined.

- The machine will, in the same way as the driver, be affected by a force acting in the lateral direction when working on an inclined surface. Gravity acts in the center of gravity in the vertical direction, therefore this lateral force arises which will seek to overturn the machine when running on an inclined surface. The machine will therefore have a limit on how sloping a surface it can run without overturning. If the substrate has different bearing capacity, where the bearing capacity is at least at the bottom of the slope, the machine will reach this limit at a lower slope.

15

There is an excavator with a hinge arrangement for aligning the excavator's upper with respect to a chassis comprising a frame. This excavator has a hinge arrangement which is located on the upper side of the undercarriage on one side of a center plane through a frame. The excavator is provided with an actuator 20 for tilting on the opposite side of the center plane. Thus, the excavator can only be tilted to one side.

The same mini excavator is equipped with larvae which can be moved laterally so that the track width of the undercarriage is increased by approx. 30%. This increases the stability of the mini digger.

Purpose of the Invention

SUMMARY OF THE INVENTION It is an object of the invention to provide a subcarriage for a machine which enables alignment on both sides of an upper part located above said subcarriage to a position where a driver's seat on said upper part can be created to a substantially horizontal position as the machine runs along a substrate that is not horizontal. The machine must be arranged to run on even steep slopes which give the machine a strong lateral inclination without danger of the machine overturning.

3 DK 176929 B1

Description of the Invention

This is achieved according to the present invention with a machine of the type mentioned initially, which is characterized in that the tilt axis coincides with the middle plane and that the telescopic arms can be moved independently of one another.

5

In this way, the machine can be created on both sides, as the tilting arrangement, when tilted around the center axis of the tilt plane, can have a fluctuation equal to both sides. This is assuming that there are no mechanical parts of the machine which limit such fluctuation.

10

The machine will be constructed such that there is a distance between the underside of the upper and the upper side of the frame and the propulsion means. This distance determines the angle at which the machine can be tilted, and thus how inclined the base can be.

15

Furthermore, it is obtained that the center of gravity is moved in a direction which counteracts the gravitational conditions of lateral forces when traveling on an inclined surface. In addition, the tilt of the tilt axis located on the center plane ensures that the center of gravity will be able to stay within the propulsion area support when the top is formed in relation to the inclined surface. The upper part can advantageously be placed so that the center of gravity of the upper part is substantially vertical over the rocker axis. This means that the forces with which the upper part is to be influenced are equal under fluctuations on both sides.

The invention thus achieves a comfortable driving position for the driver, while at the same time being adapted to counteract the forces which seek to overturn the machine by moving the center of gravity.

Furthermore, with the individual displacement of the telescopic arms, the weight distribution between the propulsion means on each side of the center plane can be controlled.

30 If the substrate for one side is softer than the substrate for the other side, the weight can be distributed so that the propellant supported by the relatively harder substrate carries a greater proportion of the weight of the machine.

In an embodiment of the invention, the telescopic beams can be displaced so that the track width of the undercarriage can be increased by 70%.

The telescopic arms on each side can displace the propellants independently of each other, so that the frame is not necessarily positioned in the middle between the propellants. This makes it possible to distribute the weight between the two sides variably, for example from 40/60 via 50/50 to 60/40. This is an advantage when the substrate has different carrying capacity, since it is possible to distribute the weight so that the propellant under which the substrate has the greatest load capacity occupies the largest proportion of weight.

10

The machine is used in many different contexts where it is necessary to run on sloped surfaces. Examples of applications include the following: 15 - For an excavator or mini excavator used for work in ditches or along buildings. Such a machine will, with the upper set up, move an arm in a vertical direction, thus digging vertical rows. The fact that the machine can be created on both sides gives a flexibility as to which side the slope slopes to.

20 - For a bus cruiser, excavator or mower operating in ditches on motorways, be it in the area between the two opposite tracks or next to the roads. In such areas, lamp posts, road signs or other obstacles may be placed at the bottom of the ditches. As space is often limited, it is a great advantage that the cab can be set up, as it does not project beyond the outer boundaries of the propulsion means and thus does not risk entering the obstacles with the cab, while at the same time passing close to the obstacle on the inclined surface because the cab is within the outer limits of the undercarriage. In addition, the substrate at the bottom of the ditches will often be soft, as water often accumulates here. The machine can compensate for this with the telescopic arms as the telescopic arm in the side closest to the bottom of the trench is displaced to an extreme position, while the telescopic arm in the side farthest from the bottom of the trench is displaced to an inner position. The propellant in the side closest to the bottom of the trench will thus carry a smaller part of the weight, and the machine can operate with better support and thus greater safety.

5 DK 176929 B1 - For a bus crawler or trap machine operating in the hard to reach terrain along and on a slope. The sloping slope has a strong slope with a substrate that has a different bearing capacity. The machine allows for traceless clearance of the area, since the machine can operate directly on the slope of the rail at the necessary safety distance from the rails. The machine therefore makes it possible to clear the area for planting without interfering with train operation, which results in a significant increase in the clearing capacity, which is the distance along the rails that can be cleared per day. The surface of the slope will typically be more uncertain near the top of the slope due to loose shards. The machine will be able to compensate for this with the telescopic arms as the telescopic arm is displaced near the bottom of the slope toward an inner position and the telescopic arm closest to the top of the slope is displaced to an outer position. Thus, the propellant near the bottom of the slope will carry a greater portion of the weight of the machine than the propellant nearer the top of the slope. The machine can thus operate on the slope with greater safety.

15 - For a tractor operating on sloping fields. Here the alignment on both sides is a great advantage, for example in connection with plowing or harrowing, as you drive back and forth along the slope.

20 - For forest machines operating in forests where the terrain is difficult to access are sloping with side-to-side shifts and with varying bearing capacity.

The above examples should not be considered as limiting the application possibilities, as the machine can be provided with different tops according to purpose.

25

According to a further embodiment, the machine according to the invention is characterized in that the rocker axis is optionally located largely at the lowest point of the frame or a point below the frame.

30 As a result, the swing of the upper is maximized when tilted. This thus provides the greatest displacement of the center of gravity that can be achieved with a given construction. It is still assumed that the machine is designed so that the distance between the underside of the upper part and the upper side of the undercarriage is sufficient to enable the necessary fluctuation.

If the tilting axis is placed under the frame, it is possible that the center of gravity of the upper part can be displaced to a point close to the lateral extent of the propulsion means, thus allowing to operate on a very sloping surface.

According to a further embodiment, the machine according to the invention is characterized in that the telescopic arms are positioned at a downward angle.

10

This provides an opportunity for a greater swing of the upper, and thus a greater alignment of the upper. When the undercarriage is driven into a sloping surface, alignment is initiated and thus tilting or weight shifting of the upper part. As previously mentioned, the angle of alignment will be limited by the distance between the upper surface of the undercarriage including the propulsion means and the underside of the upper. With a downwardly directed angle of the telescopic arms corresponding to the angle at which the top can be created relative to the ground, the telescopic arms can be shifted variably without the danger of any part of the machine colliding with another part of the machine, even during the largest alignment.

Thus, with a maximum angled upper part relative to the undercarriage, the upper telescopic arm will be displaced parallel to the underside of the upper part. Thus, the angle of alignment does not affect the track width.

The angle of the telescopic arms of a machine used as an excavator, mini excavator 25 or trap machine will typically be in the range of 20 ° to 35®, preferably 25®, which has been found to be an optimal compromise between maximum fluctuation of the upper and thus maximum slope of the substrate in relation to the overall height of the machine.

For machines for other purposes, the optimum range of the downwardly directed angle of the telescopic arms may be different.

30

According to a further embodiment, the machine according to the invention is characterized in that it comprises a rotary mechanism located between the rocker arrangement and the upper part for rotating the upper part about a substantially vertical axis through the upper part,

This allows work on all sides of the machine with a working tool.

5 The design of the machine made possible by the invention creates a horizontal and stable platform for the upper. The location of the rotation mechanism on top of the rocker arrangement causes rotation to occur about a vertical axis. Thus, when the machine is set up on an inclined surface, the working tool can be moved up and down in a vertical direction, which is mostly a requirement for construction machinery.

10

The rotation mechanism may be designed to allow, in whole or in part, 360 ° rotation in both directions. In machines where the upper parts comprise an engine compartment, the rotation mechanism must comprise a transmission of power to the undercarriage. This power transmission may be mechanical, pneumatic, electrical or hydraulic, the propulsion means and any other consumers on the undercarriage, such as the telescopic arms, needing such power transmission to operate.

The rotation mechanism will typically be a torque wrench.

According to a further embodiment, the machine according to the invention is characterized in that the propellants are optionally selected from the track or wheel.

The choice of propellant is based on a compromise between, among other things, complexity and permissible surface pressure. The footprint of a crawler belt is larger than that of wheels of the same height, but wheels provide a less complex rebuilding of the machine in combination with a lower price and a wide range for different purposes.

Larvae are selected when low surface pressure is desired. This may be the case when the machine is operating on a soft surface, where there is a risk that the machine will sink into the surface and run firmly or if you want to disturb the surface as little as possible. Larvae include both rubber and metal bands and chains.

8 DK 176929 B1

Wheels are chosen when there is no requirement for low surface pressure or when low complexity is a predominant factor. In addition, wheels allow you to achieve higher speeds than when using caterpillars.

5 Caterpillars and wheels can be designed to give a good grip on the ground.

According to a further embodiment, the machine according to the invention is characterized in that a first hinge means is located between the propulsion means and the telescopic arms, for rotating the propulsion means about a longitudinal axis through the propulsion means.

10

This ensures that the propulsion means can be angled so that they follow the sloping ground for the best possible support. This is, for example, an advantage in connection with purification of drainage channels, where the machine has a propellant located on each side of the channel. The propulsion base will be inclined in each direction, but an individual angular rotation of the propellant on each side will ensure that the propeller is supported throughout its width.

Furthermore, the propulsion means can be rotated in such a way that they '' bite '' into the inclined surface. Here, one will intentionally turn a propellant so that the part of the propellant that is farthest from the machine will dig into the substrate. This method is selected when there is a risk of the machine sliding sideways down the ground. This may be the case if the substrate is smooth and thus does not allow the propulsion means to get the necessary grip in the substrate.

The angle at which the propulsion means can be rotated about the longitudinal axis, for a machine used as an excavator, mini digger, bush cutter or trap machine will typically be in the range -15 ° to + 50 °, where 0 ° is the vertical position of the propulsion means.

According to a further embodiment, the machine according to the invention is characterized in that the tilting arrangement comprises a second hinging means for tilting about the tilting axis.

9 DK 176929 B1

This results in an uncomplicated and strong structure of the undercarriage, as the required strength of the rocker arrangement can be easily ensured. The hinge member will typically be positioned so that the tilt axis is at the lowest point of the frame.

According to a further embodiment, the machine according to the invention is characterized in that the rocker arrangement comprises at least one actuator on each side of the central plane, where each actuator has at one end a fixed angle with respect to a first support, where each actuator at its other end has a pivotal connection to a second support, wherein the first support and the second support are optionally placed on the undercarriage or upper, respectively.

Hereby it is obtained that the rocker axis can be moved to a point lower than the frame, in that, by establishing the rocker arrangement by means of actuators, it is not limited by a mechanical rocker axis. In addition, the rocker axis can be moved up and down along the center plane if desired. This is done by varying the actuator's movement relative to each other between the extremes of the upper swings.

In a particular embodiment of the machine, the rocker arrangement comprises four actuators. This makes it possible to create the upper part in a horizontal position in the event that the base layer slopes in directions not parallel to the tilt axis. The tilt axis is thus not coincident with the center plane.

According to a further embodiment, the machine according to the invention is characterized in that the tilting arrangement, the telescopic arms, the rotating mechanism, the first hinge member 25 and the second hinge member are optionally provided with at least one actuator which is optionally selected from hydraulic, electrical or pneumatic actuators.

The choice of actuator type depends on several factors.

30 Hydraulic actuators will be the preferred choice because there is a large selection of components and large forces can be obtained with even small actuators, but in connection with maintenance of the hydraulic components there may be a risk of environmental pollution. Hydraulic components also require relatively large hoses that occupy some space on the machine.

It is expected that in the future, a greater prevalence of electric actuators will be seen as 5 requirements for environmentally friendly machines increase. In the case of electrically driven machines, it will also be natural to choose electric actuators. The current is fed to the actuators through cables that do not require as much space. Furthermore, it is possible to transfer the current through the drag rings, so that any rotational mechanism does not have to take into account a more complicated power transmission.

10

Pneumatic actuators are chosen when there are special environmental considerations to take, since maintenance and replacement of components are not associated with environmentally hazardous hydraulic oil. However, a given pneumatic actuator cannot transmit the same forces as a hydraulic actuator of the same size.

15

According to a further embodiment, the machine according to the invention is characterized in that the rocker arrangement, the telescopic arms, the rotation mechanism and the hinge means are optionally provided with at least one locking arrangement which is optionally selected from mechanical locking, hydraulic locking, electric locking or pneumatic locking.

20

Typically, the machine will be provided with a combination of several of the above types of locking.

By hydraulic and pneumatic locking, it is meant that the hydraulic and pneumatic circuits, respectively, are built up so that valves block the individual actuator so that they cannot be moved.

By electric locking is meant a short circuit of the actuator so that it cannot move.

In a particular embodiment of the invention, the rocker arrangement is provided with a combination of mechanical and hydraulic locking. The rocker arrangement has a brake disc with a brake caliper connected to the hydraulic system. In addition, the hydraulic system has a design of the valves which lock the actuator in the rocker arrangement. The latter locking arrangement is dimensioned so that it alone can hold the top. When the rocker is in use, pressure is applied to the rocker actuator and the brake caliper is relieved to open and tilt the upper part. When the upper part has reached the desired position, the rocker arrangement is canceled. The rocker actuator is shut off. The pressure is rebuilt, via an accumulator, into the brake caliper, which clamps on the brake disc and thereby locks the upper part in the desired position.

10 Drawing Description

The invention will then be explained in more detail with reference to the accompanying drawing, in which fig. 1 shows a machine in a starting position seen from the rear; FIG. 2 shows a machine with a telescopic arm on one side in an extreme position and a telescopic arm on the other side in an inner position; FIG. 3 shows a machine with the telescopic arms on both sides in an extreme position; FIG. 4 shows a machine with the telescopic arms on both sides in an extreme position and the hinge means of the propulsion means in an extreme position; FIG. 5 shows a machine operating on an inclined surface with most of the weight placed on the upper propellant; FIG. 6 shows a machine operating on an inclined surface with most of the weight placed on the bottom of the propellant; and FIG. 7 shows a machine with another embodiment of the rocker arrangement.

In the description of the figures, identical or similar elements will be denoted by the same reference numerals in the various figures. Thus, no explanation of all details will be given in connection with each figure / embodiment.

Detailed Description of the Invention

Figures 1-7 show various pictures and illustrations of a machine 1 according to the invention. The machine 1 comprises a subcarriage 2 and a top part 6 arranged above the carriage 2. Furthermore, the machine 1 comprises a rocking arrangement 8 located between the subcarriage 2 and the top 6.

The undercarriage 2 comprises a frame 3 and propulsion means 4 on each side of a center-5 plane 5 through the frame 3. The center plane 5 is parallel to the direction of travel of the machine and vertical in an exit position of the machine 1, where it stands on a horizontal surface. The propulsion means 4 are connected to the frame 3 with telescopic arms 10 on each side of the median plane 5.1. The embodiment shown is the propulsion means 4 crawler belts. The propulsion means 4 can be displaced independently of each other with the telescopic arms 10 on each side of the median plane 5. This allows for a change in the weight distribution between the propulsion means 4. The embodiment shown allows for the displacement of the telescopic arms 10, which increases the span of the propulsion arms 4 by 60%. 10 has a downwardly directed angle so that the displacement and then causes the overall height of the machine 1 to increase. At the same time, the distance between the underside of the upper part 6 and the upper side of the undercarriage 2 including the telescopic arms 10 and the propulsion means 4 becomes larger as the telescopic arms 10 are displaced to an extreme position.

This allows for a greater fluctuation of the upper part 6 without colliding with any part of the lower body 2.

The connection between the undercarriage 2 and the upper part 6 is formed by the rocker arrangement 8.1. In the embodiment shown, the rocker arrangement 8 is another hinge member 15 with a rocker axis 9 which is located substantially at the lowest point of the frame and coincides with the middle plane 5. The rocker axis 9 is shown as a point since it has a direction that is orthogonal to the image plane. In the illustrated embodiment, a rotation mechanism 11 25 is located between the second hinge member 15 and the upper 6. The rotation mechanism 11 allows rotation of the upper 6 about a substantially vertical axis 12 through the upper 6. The vertical axis 12 coincides with the median plane 5 in an initial position such as shown in Figure 1. The rocker arrangement is provided with a mechanical locking arrangement 21, wherein the frame is provided with a brake disc 22 and an opposite part of the hinge member 15 is provided with a brake caliper 23 which can hold the upper part 6 in the desired position.

In the illustrated embodiment of the invention, the propulsion means 4 are connected to the telescopic arms 10 with a first hinge means 13. The hinge means 13 enables rotation of the propulsion means 4 about a longitudinal axis 14 through each propellant. The longitudinal axis 14 is shown as a point as it has a direction which is orthogonal to the bilateral plane. In the embodiment shown, the propulsion means can be set in the range -15 ° to + 50 ° relative to an initial position of 0 ° as shown in Figure 1.

The upper part 6 comprises a driver's seat 7.1. In the embodiment shown, the driver's seat is enclosed in a cab 19. The cab 19 is shown displaced from the middle plane 5, but it will also be possible to be placed on the middle plane 5 as appropriate. The upper part 6 further comprises an engine compartment 20, with an engine and a hydraulic pump for operating the propulsion means 4 of the machine, various actuators for the rocker arrangement 8, the telescopic arms 10, the first hinge member 13, the rotation mechanism 11, an optional working tool (not shown) and any locking arrangements for said actuators.

15

The machine in the illustrated embodiment can operate on substrates with a slope from 0 ° to 45 °, but other embodiments of the machine can achieve operation on surfaces inclined up to 60 °.

20 Next, the operations in Figures 1-7 are reviewed.

Figure 1 shows the machine 1 in an initial position where the telescopic arms 10 are in an inner position and the upper part 6 is arranged with the rocker arrangement 8 in a central position. This position is used when the substrate is level at the same time as no greater stability is required for, for example, lifting ability of a working tool. In addition, this position will be used during normal driving with the machine 1, the outer dimensions being limited as much as possible in this position.

Figure 2 shows the machine 1 in a working position where the substrate for propulsion means 4 30 has different heights. The telescopic arms 10 are displaced such that one telescopic arm 10 is in an inner position and the other telescopic arm 10 is in an extreme position. The upper part is hereby placed so that most of the weight is carried by one propellant.

14 DK 176929 B1

Figure 3 shows the machine 1 in a working position where the support is horizontal but the telescopic arms 10 are displaced to their extreme position. This is used when the machine 1 operates over a trench that it can span or when there is a requirement for extra stability of the machine 1 in connection with the lifting capacity requirements of a working tool.

5

Figure 4 shows the machine 1 in a working position, where the machine 1 operates in a ditch or channel that is too wide for the machine 1 to span it. The substrate on both sides of the ditch or channel is inclined. The telescopic arms are displaced to their outermost position as in Figure 3 and the first hinge means 13 are rotated to an outermost position.

10

Figure 5 shows the machine 1 in a working position where the machine 1 operates on a slope.

One telescopic arm 10 is displaced to an inner position with the first hinge member 13 displaced to an angle of approx. -15 °. This displacement of the first hinge member 13 is intended to minimize the distance between the underside of the upper part 6 and the upper side of the propulsion means 4, and to cause the propulsion means 4 to '' bite '' into the substrate. The second telescopic arm 10 is displaced to an extreme position with the first hinge member 13 displaced to an angle of approx. + 50 °. The machine 1 has moved the center of gravity so that the upper propulsion means 4 takes up the largest second of the machine weight.

20 Figure 6 shows the machine 1 in a working position where the machine 1 operates on a slope as in Figure 5. Here the machine 1 has moved the center of gravity so that the lower propulsion means 4 takes up the largest proportion of the weight.

If the machine 1 is provided with an arm and a rotation mechanism, it will be able to use the arm as a support when it has to occupy the various working positions. For example, if the machine 1 is to pass through a trench, the machine 1 will support the arm on the opposite side of the trench and the propulsion means 4 at the farthest arm, while the telescopic arm 10 closest to the arm is displaced to an outer position. Thereafter, the arm is raised so that the machine 10 supports both propulsion means 4. The arm is moved to the opposite side and lowered so that the machine 1 is again supported on the arm and the propulsion means 4 is removed the arm. The supporting propellant 4 is now another. The propellant 4 closest to the arm is displaced to its innermost position and the arm is raised so that the machine 1 is again supported on the propulsion means 4. The process is repeated until the machine 1 is in place in the trench or has passed it. Similarly, the machine can be moved up and down by a slope with a large side slope, such as a runway slope.

Figure 7 shows an embodiment of the machine 1, wherein the rocker arrangement comprises an actuator 16 on each side of the rocker arrangement 8.1. The embodiment shown has actuator 16 having a first support 17 on the underside of the upper 6. This support 17 has a fixed angle with respect to the upper part 2. The actuators 16 have a rotatable connection to another support 18 on the frame 3. This embodiment allows the tilting axis 9 to be moved to a point below the frame 3.

Claims (10)

16 DK 176929 B1 A machine (1), preferably an excavator, a trap machine, a bush crawler or a demolition machine comprising - a chassis (2) comprising a frame (3), 5. propulsion means (4) on each side of a center plane (5) through the frame (3), the middle plane (5) parallel to the direction of travel of the machine, - an upper part (6) arranged over the undercarriage (2) and comprising a driver's seat (7), - a rocker arrangement (8) located between the undercarriage ( 2) and the upper part (6) for tilting the upper part (6) relative to the lower carriage (2) around a tilting axis (9) 10 through the machine (1), - at least one telescopic arm (10) on each side of the central plane (5), which telescopic arms (10) are mounted between the frame (3) and the propulsion means (4), for changing the distance between the propulsion means (4), characterized in that the tilt axis (9) is located in the middle plane (5) and the telescopic frames (10) can be displaced independently of one another. Machine according to claim 1, characterized in that the rocker axis (9) is optionally located substantially at the lowest point of the frame or a point below the frame (3). Machine according to any one of claims 1-2, characterized in that the telescopic frames (10) are positioned at a downward angle. Machine according to any one of the preceding claims, characterized in that it comprises a rotating mechanism (11) located between the rocker arrangement (8) 25 and the upper part (6) for rotation of the upper part (6) about a substantially vertical axis (12) through the upper part (6). Machine according to any one of the preceding claims, characterized in that the propulsion means (4) are optionally selected from crawler belts or wheels. 30 Machine according to any one of the preceding claims, characterized in that a first hinge member (13) is located between the propulsion means (4) and telescopic arms 17 for rotating the propulsion means (13) around a longitudinal axis (14) through the propulsion means (4), Machine according to any one of claims 1-6, characterized in that the rocker arrangement (8) comprises a second hinge member (15) for tilting about the rocker axis (9). Machine according to any one of claims 1-6, characterized in that the rocker arrangement (8) comprises at least one actuator (16) on each side of the central plane (5), each actuator (16) having one end fixed angle with respect to a first support (17), with each actuator at its other end having a pivotal connection to a second support (18) and wherein the first support (17) and the second support (18) are optionally located on the undercarriage (2) or upper (6), respectively. Machine according to any one of the preceding claims, characterized in that the tilting arrangement (8), the telescopic arms (10), the rotating mechanism (11), the first hinge member (13) and the second hinge member (15) are optional. provided with at least one actuator which is optionally selected from hydraulic, electrical or pneumatic actuators. Machine according to any one of the preceding claims, characterized in that the tilting arrangement (8), the telescopic arms (10), the rotating mechanism (11), the first hinge member (13) and the second hinge member (15) are optionally provided with at least one locking arrangement which is optionally selected from mechanical locking, hydraulic locking, electric locking or pneumatic locking.