FI62390B - ARBETSMASKIN DAER EN STATIVDEL VIA ETT FAESTE UPPBAER ETT FOERETRAEDESVIS I ETT VERTIKALPLAN ROERLIGT ARBETSORGAN - Google Patents

Description

Γ »Ί / 11 \ ADVERTISEMENT

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Patent and Rakistarihallftw ........ n.

_. . . (44) Date of publication] · kuLLullullun pvm. - 31.08.82

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Sweden-Sweden (SE) 76l2659 ~ 8 (71) (72) Lars Gunnar Larsson, .Landersättravägen 97 »S-175 70 Järfälla,

Sweden-Sweden (SE) (7 * 0 Oy Kolster Ab (5 * 0 Implements in which the body is preferably supported by a vertically movable working member by means of a bracket

The invention relates to a working machine, in which the body part preferably supports a vertically movable working member by means of a support, comprising on the one hand a first tool preferably intended for lifting and on the other a second tool arranged outside the first tool and lowered from the support, that during lifting by the first implement it can form a support for the working member to prevent the implement from tilting.

Such machines are often used to pull pipes embedded in the ground. In this case, it may often be necessary to apply a lot of force to the work in question, but since the line of attraction is usually quite far from the center of gravity of the implement and usually outside the contact surface between the implement and the ground, problems with the severity of the implement arise. When the traction force is too high, the implement collapses and, on the other hand, the risk of tipping over sets limits on the traction force used.

2 62390

The object of the invention is to provide a working machine which does not have the above-mentioned drawbacks, but in which it is possible to use a high pull-up force simply and safely without the risk of tipping over. It is also an object of the invention to provide a working machine which can be simply adapted to different work tasks.

More specifically, the invention is characterized in that the working member preferably includes a horizontal boom having a boom pivotable guide associated with the second implement with a longitudinally displaceable rod adjustable between a substantially horizontal transport position and a substantially vertical working position. for rotating the rod about its longitudinal axis relative to the guide and on the other hand with a rod locking device for axial rotation locking of the rod, and that in the working position the lower end of the rod can be connected to a tool, e.g. a digging tool.

Other preferred details of the invention are set out in claims 2-13.

According to the invention, a working machine is thus obtained which can be used to pull the pipes up without the risk of tipping over. Thus, as before, it is no longer necessary to use a heavy machine to obtain good stability. The shape of the working member also makes it simple to adapt the location of the support to the quality of the platform. By placing the rope winch in the working member and not - as is customary - in the frame, a simplified control of the working member is advantageous.

The invention will now be described in more detail with reference to the accompanying drawings, in which Figure 1 shows a schematic side view of a working machine in both working and transport positions, Figure 2 shows a top view of the working machine of Figure 1, Figure 3 shows a perspective view of shows a working machine of the invention for pulling up a pipe. The working machine 1 according to the invention is, as can be seen from Fig. 1, provided with a frame part 2 with a cab 3 and transport members 4, in the figure track tracks. The body part 2 supports, by means of a movable support 5, a working member 6 which is movable relative thereto, which can be moved by means of the support 5 at least in a vertical plane. The working member 6 includes a guide 7 which is articulated to a support 5. The guide 7 supports a boom 8 which can be moved longitudinally relative to the guide 7 by means of a working cylinder 9. The boom 8 is preferably arranged in a substantially horizontal position.

The bracket 5 comprises two substantially parallel arms, a rear arm 10 and a front arm 11, each of which is articulated to both the body 2 and the guide 7. These two arms together with the body 2 and the guide 7 form a parallelogram mechanism in which the guide 7 can be moved parallel to the rear arm 10 and the body. 2 by means of an actuator 12, suitably a working cylinder. The front arm 11 suitably consists of a working cylinder which can be set and locked to such a length that the guide 7 is given a parallel movement and activated in either direction or which can also be in a floating state.

The working member 6 has a first working device 13, which is primarily intended for lifting and is mounted on the working member 6 outside the connection between this and the support 5. The working member 6 also includes a second tool 14, which is located outside the first tool 13 from the support.

The boom 8 is fork-shaped at one end (see Fig. 2) and has at this fork end two spaced-apart and directly opposite bearings 15 for the two bearing pins 16 of the guide 17 belonging to the second tool 14. The guide 17 has a rod 18 which can be moved longitudinally relative thereto. The guide 17, together with the rod 18, can be pivoted around the bearing pins 16 in a vertical plane parallel to the longitudinal axis of the boom 8 by means of an actuator 19 attached to it 17.

The working member 6 includes at least one first rope winch 20 belonging to the second implement 14 located at a different end of the boom 8 from the guide 17. At least one rope 21 leaves this first winch 20 and passes through the rope pulley 22 attached to the guide 17 along the rod 18 and is attached to the rod 18 to the end closer to the ground in the working position. Thus, in the position shown in full lines in Figure 1, the rod 18 can be raised and lowered by means of the first winch 20 and the rope 21. On the same side of the guide 7 as the first winch 20, the boom 8 also has a second winch 23, from which at least one rope 24 passes around a pulley 25 mounted at the opposite end of the boom 8. The rope 24 is preferably free of its outer end and can be used for many different lifting purposes.

“62390

In the working position, the lower end of the rod 18 is provided with a tool holder 26 on which an excavating tool 27 in the form of a digging bucket, for example, can be mounted. This is suitably operated hydraulically via hydraulic lines in the rod 18 connected to one or more hydraulic hoses 28 at the upper end. to at least one hose reel 29 located at the same end of the boom 8 as the winches 20 and 23. By means of the hose reel 29, the length of the hydraulic hoses 28 can be adapted to the respective position of the working member 6. From the working position shown in full lines in Fig. 1, the working member 6 can be moved to the transport position shown in dashed lines in the same figure, where the boom 8 is lowered and the bar 18 is turned to a horizontal position. When changing to one of these two positions, it is necessary to change the length of the hydraulic hose 28 to suit by means of the hose reel 29.

Figure 3 shows a detailed view of the first lifting device 13 intended primarily for lifting in its rest position. The guide 7 has on each side of the boom 8 a support 30 for the lifting device 31, which is suitably a working cylinder, which moves about a pivot axis directed substantially horizontally and perpendicularly to the longitudinal axis of the boom 8. By means of an actuator 32, preferably a working cylinder, attached to the guide 7 and the support 30, the lifting device 31 can be turned in a vertical plane and thus lifted out of its rest position by the hook 33 attached to the guide 7. The lifting device 31 is intended to be substantially vertical in the working position. By means of the tilting shaft 34, which is substantially perpendicular to the axis about which the support 30 is turned by means of the actuator 32, the lifting device 31 in the working position can be tilted with respect to the support 30. The piston rod 35 belonging to the lifting device 31 can be connected at its free end to a suitable gripping member 36 (see Fig. 5). By means of the suspension described here, the lifting device 31 can always be positioned so that its longitudinal direction becomes parallel to the respective pulling direction.

The guide 17 includes, as shown in Figure 4, upper and lower guide sleeves 37 and 38 in which the rod 18 can be moved axially. Both guide sleeves are torsionally connected to the rod 18 by grooves which fit into a longitudinal wedge 39 provided on the outer surface of the rod. The upper and lower guide sleeves 37 and 38 are axially retained in the outer sleeve 40 by the upper cover 41 and the lower cover 42, respectively. Between the upper and lower guide sleeves 37 5 62390 and 38 there are one or more locking pieces 43 arranged around the rod 18, the rod 18 side of which is arranged in the shape of a rod. The locking pieces 43 can be brought to rest on the rod 18 so that the upper locking cone H4 and the lower locking cone 45, spaced apart in the longitudinal direction of the rod 18, are brought towards each other by means of one or more locking cylinders 46 attached to these locking cones.

Both guide sleeves 37 and 38 are rotatably mounted on the outer sleeve 40. The upper guide sleeve 37 is rotatable by means of a torsion device 47 which includes the respective was a pulley 48 attached to the spring sleeve in 37, the plane of which is substantially perpendicular to the axis of the rod 18. A rope 49 extends around the circumferential portion of the pulley 48, both ends of which are guided through two pivots 50 (only one shown in Figure 4) attached to each side of the outer sleeve 40 to respective separate outer sleeves 40 attached to the outer sleeve 40, which are preferably working cylinders. By means of the traction devices 51, a traction force can be applied to one end of the rope 49 and thus force the rope pulley 48 and with it also the upper guide sleeve 37 and the rod 18 and also the lower guide sleeve 38 to rotate about the longitudinal axis of the rod 18. This rotational movement can advantageously take place regardless of whether the rod 18 is locked longitudinally immovable relative to the guide 17. By means of the torsion device 47, the tool 27 attached to the rod 18 can be moved in the desired manner about the longitudinal axis of the rod 18.

In the working position shown in Figure 1, the working machine according to the invention is intended to use a second working tool 14 for digging. The digging tool 27 can be placed in the desired position relative to the frame 2 by suitable displacement of the parts included in the working member 6 and then opened and closed in a conventional manner. In excavation work, the actuator 19 is allowed to swim, i.e. be free, as a result of which the rod 18 and the boom 8 can turn relative to each other around the bearing pins 16. In order for the excavating tool 27 to be effectively pressed into the ground, the working cylinder forming the front arm 11 can be activated so that the the stem shortens. In this way, a force acting vertically downwards is transmitted to the rod 18 via the guide 7 and the boom 8. During excavation, the rod 18 can be rotated about its longitudinal axis as described above.

6 62390

Figure 5 shows a working machine 1 according to the invention used for pulling up pipes by means of a first working tool 13.

The boom 8 is then moved relative to the guide 7 to such a position that its end supporting the rod 18 is now further away from the guide 7. The rod 18 is mounted substantially vertically and rests on its lower surface, possibly previously mounted on a base, e.g. The rod 18 is then locked relative to the guide 17 and this in turn is locked relative to the boom 8 by means of the actuator 19, so that the boom 8 and the rod 18 cannot move relative to each other. By means of their actuators 32, both lifting devices 31 are set in a substantially vertical working position. The piston rod 35 of each lifting device 31 is provided at the bottom with a gripping member. 36, which is attached in whole or in part to the upper end of the tube 52 printed on the ground 53. Both gripping members 36 are preferably attached diametrically opposite each other to the tube 52. For large tubes, it may be advantageous to place a spacer between the gripping members 36. When the lifting devices 31 of the first implement 13 are actuated, the second implement 19 forms a support which prevents the implement from tilting and tipping over. In order to facilitate the lifting of the pipe, the lifting devices 31 are preferably driven alternately at a suitable frequency. The bracket 5 can then be locked by locking the actuator 12 and the front arm 11.

It is also possible to allow the front arm 11 to change its length, i. let go. the cylinder forming the arm to float.

The implement 1 described here can, of course, be modified in many different ways as required. Normally, the devices, usually hydraulic pumps, which supply the working medium to the different working cylinders are placed in the body 2, from where the lines not shown here go to the hose reel 29 and other required points. There may be more or fewer rope winches mounted on the boom 8 than shown here. It is also possible in different ways to equip the boom 8 with additional weights for balancing purposes. For processing reasons, it is advantageous to be able to move the guide 7 some distance outwards in front of the body 2 so that the angle formed by the boom 8 and the line passing at opposite ends of the two supports 5 through the articulation points of the working member 6 and the body 2 mainly tools 13 and 19.

i 62390 The working direction of the parts included in the working member 6 indicated here can be changed as required. The front arm 11 must normally be able to provide traction, but by making it, for example, a double-acting cylinder, a compressive force can also be provided. The same may apply to the first tool 13.

Claims (13)

A work machine, in which a stand part (2) supports, via a bracket (5), a preferably movable working member (6) in a vertical plane, which comprises partly a first working member (13), which is preferably intended for lifting, and partly a second working device (14) arranged from the bracket outside the first working device, and which is capable of supporting the working member (6) during lifting by means of the first working device to prevent the working machine from tipping, characterized in that in the working member (6) includes a preferably horizontal boom (8), at one end of which is a guide (17) pivotable in relation to the boom (14), which extends longitudinally displaceable rod (18), which is adjustable between a substantially horizontal transport position and a substantially vertical working position, that the guide (17) is provided with a rotating device (47) for rotating the rod about its longitudinal axis relative to the control (17) and partly a closing reading device. (43-46) for pivotal reading of the bar (18) in the axial direction, and that in the working position the lower end of the bar (18) is connectable to a tool, e.g. an excavation tool designed for heel excavation (27). Work machine according to claim 1, characterized in that a guide sleeve (37) inserted in the guide (17) via an axial recess is in a pivotal engagement with a cam (39) running along the bar (18), and that the guide sleeve is rotatable by means of a rotary word. (47). Work machine according to claim 1 or 2, characterized in that in the closing reading device (43-46) there are one or more reading pieces (43) located around the rod, which can be brought into contact with the rod by means of two reading shoes (44, cooperating with the reading piece). 45), which are displaceable in the longitudinal direction of the bars. Work machine according to any of claims 1-3, characterized in that the boom (8) is stored axially displaceable in a control member (7) which is hingedly connected to the bracket (5), which in turn is adjustable relative to the frame part (2). ). 5. A working machine according to any of claims 1-4, characterized in that the working member (6) includes at least one first lens (20) of the second working member (14), the first lens game (20) and the working means (13). , 14) are located on opposite sides of the connection of the bracket (5) to the working member (6). Work machine according to claim 5, characterized in that the first lens spool (20) and the second working device (14) are arranged at opposite ends of the boom (8). Work machine according to any of claims 5-6, characterized in that the bar (18) is slidable in at least one direction relative to the guide (17) by the first lens play (20). 8. A working machine according to any of claims 5-7, characterized in that next to the first lens play (20) is a second lens play (23), whose line (24) is arranged in connection with the second working device (14). for lifting purposes. Work machine according to any one of claims 5-8, characterized in that the bracket (5) includes means (11) for rotating the working member (6) in a vertical plane, whereby the second working member (14) in working position can exert compressive force against an object, such as e.g. the ground, e.g. cprävning. Work machine according to claim 9, characterized in that the bracket (5) is a four-member mechanism with at least two essentially parallel link arms (10, 11), of which at least one (11) is of variable length and is preferably comprised of a working cylinder. 11. A working machine according to any one of claims 1-10, characterized in that the first working device (13) is supported by the control device (7). 12. A working machine according to any one of claims 1-11, characterized in that the first working member (13) consists of two substantially parallel and mutually spaced lifting means (31), preferably hydraulic cylinders, which are suitably arranged to lifting is run alternately, e.g. for pulling pipes out of the ground, and that the first working member (13) is connectable to gripping means (36) for the object to be lifted. Work machine according to claim 12, characterized in that the guide (17) is readable relative to the boom (8) during lifting, so that the boom (8) and the bar (18) thereby form a substantially right angle to each other.