FI109002B - Arrangement that can be fitted to a boom of a machine for handling elongate scrap iron - Google Patents

Description

1 109002

Attachment attachment to the working boom for handling elongated scrap Vid bom av arbetsmaskin fastgörbar anordning för behandling av längsträckt skrotjäm

The invention relates to a device for attaching to a boom of a machine tool for handling elongated scrap iron, such as rails, beams, rods or the like.

Scrap iron which is too large in size must be cut into pieces suitable for re-melting. For example, scrap rails that require such cutting are scrapped rails. Moving long rails collected in heaps to the cutting device is difficult to feed. Also, pieces cut off from the rails must be moved from the cutting device 10 to the desired location. In addition, expensive and robust equipment and the necessary power sources are needed to make the cut quickly. Suitable equipment is also needed to bring such equipment to and from the scrap processing site.

One solution to this kind of scrap iron treatment is the attachment of booms to a work machine, such as an excavator.

WO-A-92/05905 and F1-A-921109, respectively, disclose a forward grab mounted on a boom for gripping a rail. Next to the grapple, at a short distance from it, there is a cutting arm or piece for turning the rail which is pivotable by a second hydraulic cylinder and pivoting on the axis parallel to the rail. The rails are moved using a grapple, and the grapple is then slid into a new cutting position. Therefore, it is advisable to use a suitable work platform when connecting the device. The device is intended for handling relatively light rails.

. . U.S. Patent 4,519,135 discloses a cutting attachment to a work boom by cutting! 'Croaking chin.

U.S. Patent No. 4,7200,332 discloses a device for attaching to an excavator boom, comprising a grapple, a cutting device and a guide passage therebetween to guide the rail to the cutting device. The grapple grabs the rail so that it rises to the mouth of the guide channel.

;;; 'The rail is obtained by moving the machine or boom, for example, when the other end of the rail · ·' is against a support. At the other end of the channel there is an anvil and a hammer with a cylinder to make a notch at the top of the rail. Cutting is accomplished by means of cylinders' · 30, a cross-sectional member pressed against the rail relatively close to the end of the channel. In this solution, it is difficult to feed the rail to the cutting device, which significantly slows down processing. At one point near the anchor point, weighing on the rail.;: Bending piece is a rather disadvantageous solution in bending.

. It is an object of the invention to provide a device to be attached to a boom of a machine for handling elongated scrap iron such as rails, beams, bars, or the like,

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109002 2 which, compared to known solutions, significantly speeds up and facilitates the handling of elongated scrap iron, such as scrapped track rails.

To accomplish this, a device for attaching to a boom of a working machine, such as a backhoe, for handling elongated scrap iron, such as rails, beams, rods, or the like, includes a grab for gripping elongated scrap iron, means for cutting elongated scrap by bending characterized by the guide means being adapted to form a downward opening channel on the grapple side, the grapple being adapted to raise 10 elongated scrap iron in said channel when closed, and the device further comprising means for feeding the elongated scrap iron in said guide means to the cutting means.

In one embodiment, the feeding means comprises a roll pressed against an elongated scrap iron. The feed roller may be driven by a hydraulic motor. The means for pressing the feed roll against the scrap iron may include a hydraulic cylinder.

In one embodiment, the bending portion of the cutting means is pivotally attached to the side structures of the channel.

With the device according to the invention, for example, the track rail can be taken out of the heap, then moved by the boom of the implement to the desired position, for example on a transport trolley, and cut into suitable pieces quickly at said point without moving 20 devices or changing the grapple position. The rails can be handled at the unloading point along the track and cut directly to the train carriage. One person, a machine operator, can provide •. : Puts all the work steps in the process at the same time. The cost savings are considerable.

; The invention and certain embodiments thereof will be explained in more detail below with reference to the accompanying drawings, in which: Figure 1 is a schematic side view of an embodiment of a device according to the invention.

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in the excavator boom, !! Figure 2 schematically shows an embodiment of the device according to the invention from below '*, Figure 3 shows the same embodiment in a side view and partly in sectional view from A to A in Figure 2; Figures 4 and 5 show schematically an end view of an embodiment of the gripping means and their function and:; Figures 6 to 9 schematically illustrate a side view of a device according to the invention. '. the use of an embodiment for treating elongated scrap iron.

''. Figure 1 shows a side view of an embodiment of the device 1 according to the invention and connected by means of coupling means 4 to a boom 2 of a working machine. The device 1 forms, for example, 109002 3 a tool to be coupled to a conventional excavator having a body 3, gripping means 5, feeding means 6 and cutting means 7.

The structure of an embodiment of the device is described in more detail in Figures 2-5. The gripping means 5, the feeding means 6 and the cutting means 7 form a downwardly opening channel 8 in the middle of the device into which the scrap iron to be treated, such as a rail, is introduced from the end of the gripping means 5 and fed by means 6 to the cutting means 7. forming the respective fingers 11, 13, and 14 on the axes 10 and 12 between the end structure 15 and the frame plate 9. Figures 4 and 5 illustrate a possible embodiment of the grapple and its operation. In Fig. 4, the grapple, showing the genuine knife shafts 10 and 12 and the corresponding fingers 11 and 13, is open and gripping the rail 41.

In Figure 5, the grapple has closed and lifted the rail 41 inside. The grapple can be operated with conventional solutions such as suitable hydraulic cylinders and levers (not shown) that can be positioned within the end structure 15.16.

The feed means 6 are monetary units 20 pivotally attached to the frame structures 17 and 18 by means of shafts 19 on either side of the channel 8. At least one of the feed rails 21 is provided with an actuator 22, for example a hydraulic motor. A hydraulic cylinder 23 is connected between the roller units 20, by means of which the space between the rallies 21 is opened to receive a rail or the like, and the rollers are pressed against the rail or the like to feed it by means of the rallies.

The bending member 29 is pivotally secured to the structures formed by the side plates 24 of the channel 8, the second plates spaced out therebetween for supporting the other end of the shafts 26 and the support structures 27. The channel 8 is limited by: ·. on the side of the body 3, a wall 28 at the top and a bending stop 34 attached between the plates 24 at the bottom, the bending member having wedge-shaped side walls 30 and a top wall 33. To side walls 30 t; 25 are provided with downwardly extending projections 31 near the end of the cutting member, between which is fixed. ·> Fixed bar 32. A rail, etc., fed to the bending member passes between the top wall 33 and the bar 32.

!!! A hydraulic cylinder 37 is connected between the upper end of the projection 38 extending obliquely from the body 3 and the bending member 29. The upper end of the hydraulic cylinder has a pivotable attachment 39 to the projection 38 and a lower end pivotally secured to the structure 35 extending from the cutting member 29. can •; · * Secures and thus influences the bending torque.

: _ ': Figures 6-9 illustrate the operation of the device. In Fig. 6, with the grapple 5, the rail 41 is taken from the heap 40 of the rails. In fig. 7, the fingers 11, 13 and 14 of the grapple 5 are closed. ·. · 5 As illustrated in Figure 41 and the rail 21 thus brought into the space between the rallies potassium, ,,. 35 duct 8. In Figure 8 the rail 41 is supplied to the hydraulic cylinder 23 against the rail by means of actuation of the rallies 21 as indicated by the arrow F side. The rail is held by grab 7 loosely, 109002 4 so that it can slide. The rail 41 is projecting beyond the bending stop 34 outside the bending portion 29 between the upper wall 33 of the bending section 29 and the rod 32, at a suitable cutting length. Figure 9 shows a cut-off. The hydraulic cylinder 37 pushes the arrow P shown in the bending section 29 down to the upper wall 33 bend the rail 41 against the bending-5 response to the 34 and the wall 28. The rail break point 43, and its end comes loose piece 42. If the rail is not interrupted completely alaspäintaivutuksessa, the bending device 29 is folded back by the hydraulic cylinder 37, whereby the bar 32 bends the rail 41 upwards and is finally cut off. When the bending member 29 is folded back, the rail 41 is again fed a suitable length forward for the next cut, etc.

The bending stop 34, wall 28 and bending wall 33 are positioned relative to one another and dimensioned so that the channel formed by them is suitable for the scrap to be cut and the cutting to work well. Suitable sizing is found by experimenting and studying iron breakage. The hydraulic cylinder must be large enough to provide the cutting force required. For example, a cylinder having a diameter I 15 of 140 mm and a maximum operating pressure of 170 to 180 MPa has been used to cut the track rails.

For the sake of clarity, the drawings and the related explanations do not disclose any hydraulic or other connections of the various parts of the device which are naturally required for their operation and control. Such couplings are conventional techniques that are readily applicable to one of ordinary skill in the art and need not be explained in order to understand the invention.

The invention is not limited to the above embodiments, but may vary within the scope of the appended claims.

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Claims (5)

An attachment device for treating scrap iron, such as rails, beams, rods or the like, to a boom of a working machine, such as an excavator, which device includes a grip (5; 10, 11, 12, 13, 14 ) for gripping the elongated scrap iron (41), means (7; 29, 34, 37. for interrupting the scrap iron with bending and in between conducting means for guiding the scrap iron to the interrupting means, characterized in that the conducting means (8; 24, 28, 34) are adapted to form a side of the gripper (5) downwardly open channel (8), the gripper (5; 10,11,12,13,14) is adapted to lift the scrap iron (41) to the channel (8) and the device further includes means (6; 19, 20, 21, 22, 23) for feeding the scrap iron in the conducting means (8; 24, 28, 34) to the interrupting means. 2. A device according to claim 1, characterized in that the feeding means include a mile (21) which is pressed against the elongated scrap iron (41). Device according to claim 2, characterized in that means for pressing the feed roller (21) against the scrap iron (41) include a hydraulic cylinder (23). *. : 20 t 1 »: '. 4. A device according to claim 1, characterized in that a hydraulic motor (22) functions as a driving device for the feed means. A device according to claim 1, characterized in that a bending part (29) in the interrupting means is fixedly rotatable (26) at the lateral structures (24,25) of the conductor means (8,25) adjacent to the point of interruption and suffices. thence front above the scrap iron which must be interrupted. »·