FI62792B - ANORDNING FOER SLAEPTRANSPORT AV EN LAONGSTRAECKT TRANSPORTENHET - Google Patents

Description

77SS71 Γ | »1 /« «% advertisement publication ^ λ„ j) & A ™ ^ 1) UTLÄGGNINGSSKRIFT 62 79 2 C Patent granted 10 05 1923

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Sweden-Sweden (SE) 7701811-7 (71) (72) Nils-Erik Nilsson, Slipstensjön, S-92010 Vindeln, Sweden-Sweden (SE) (7l +) Leitzinger Oy (5M Device for towing a longitudinal transport unit - Anordning för släptransport av en längsträckt transportenhet

The present invention relates to a device for towing a longitudinal conveying unit, for example individual or bundled logs, pipes, rods, etc., comprising means connecting the cradle and the gripping member to the towing vehicle and configured to allow the crimping member and the gripping member to rotate about an axle at least partially parallel to the direction of traction to cause the transport unit to rotate from the first position , to a second position in which its front end rests on the blank so that the transport unit is ready to be pulled forward with the blank by means of a traction vehicle.

Finnish patent publication 28 798 discloses a device of this type, in which the blade as well as the necessary means shaped as log scissors are each freely movably connected to a common diamond-shaped loop by a short chain or, respectively, by sliding rings. The loop, in turn, is connected to a substantially V-shaped traction arc, the tip portion of which is rotated approximately four turns to cause the transport unit to rotate into the cavity just as the traction vehicle begins to move forward. However, this known device is very imperfect in many respects and facilitates little manual labor, for example in logging work. Namely, it can handle only one log at a time by towing, and the various parts of the device must first be completely handcrafted, i.e. brought into contact with the log, before it can be rolled into the kiln at the start of the actual towing.

The object of the present invention is to provide a device of the type shown in principle, which operates in a fully mechanized and substantially more versatile manner and which can further be used as a practical accessory for tractors and other traction vehicles, especially in logging work.

According to the invention, this object is achieved in that the front end of the crucible is non-rotatably connected to an arm forming an extension of a drawbar rotating about said axis of rotation, which drawbar is in turn supported by a towing vehicle and controllably rotatable relative to the vehicle both vertically and horizontally. controlled relative to the drawbar by means of a rotating device operated from the vehicle, and that the gripper is fixedly attached to the inside of the hopper to keep the transport unit permanently attached to the hopper.

In this way, a transport device of the type in question is provided, which can not only work as a relatively free-moving "mechanical hand", but can also act as a steering aid and a protective device for the towing vehicle. With the help of the new device, e.g. also tow oblong objects in bundles which are not previously tied together as a unit, in which case such a bundle can be assembled by means of a vehicle from thin logs, etc. separated from the crowd, without the driver of the vehicle having to leave his seat in the vehicle. As an aid to protection and a protective device, the device is particularly good when towing must be carried out on slippery or slippery roads, 62792 terrain and / or deep snow.

In a more preferred embodiment of the device according to the invention, the blank is arranged at least on the rear half of its length on one side of the intended extension of the drawbar so that the axis of rotation will extend through the transport unit, thereby facilitating lateral rolling of the latter. Furthermore, the arm and thus also the blank can preferably be turned by at least 180 ° relative to the drawbar by means of a pivot arm, whereby it is particularly advantageous if the rotation angle is extended to 360 ° or a little more, as it is possible to roll the transport unit optionally in either side.

In a particularly advantageous further development of the device according to the invention, the arm connected to the blank is also axially movable, most preferably by means of a double-acting piston-cylinder device arranged inside the drawbar. Thus, the dimension of the "mechanical hand" can be increased in the first place. Furthermore, it is thus possible to use a particularly advantageous shape of the rotating device in the shaft and in the shaft, as will be seen below.

Other features of the new towing device will be explained in the following description of an embodiment with reference to the accompanying drawings, in which:

Figure 1 shows a side view of the device with the hopper in the towing position and a part of the towing vehicle.

Figure 2 shows a corresponding side view, in which, however, the blank is shown inverted and raised and on the ground (dotted lines), respectively.

Figure 3 shows a rear view of the cradle in its towing position.

Figure 4 shows the shackle seen from behind in its "grip position".

Figure 5 shows a top view of the device when the container is in the towing position.

Figure 6 shows, on an enlarged scale, a partial longitudinal section of a drawbar and an arm arranged thereon non-rotatably with the front end of the ingot.

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Fig. 7 shows a perspective view of a wheeled tractor equipped with the device, seen obliquely from behind, with the hopper in its "gripping position".

Fig. 8 also shows a perspective view of a partial view of a tractor lifting mechanism known per se, to which a somewhat shaped embodiment of the device according to the invention is connected to operate in a vertical joint.

In the drawing, the number 1 describes a towing vehicle, e.g. a tractor or some other most preferably off-road and motor vehicle. This vehicle has a rearwardly facing frame 2 which, by means of the double-acting hydraulic cylinder blade device 3 shown in Figures 1, 2, 5 and 7, rotates about a rotating shaft 2 'mounted on a fixed holder 4 of a substantially horizontal vehicle. The frame 2 in turn supports a rearwardly directed drawbar 5 which likewise pivots about a substantially pivot pin 7 relative to the frame by means of a double-acting cylinder device 6 with a rotation of at least 30 ° and preferably about 45 ° or more on both sides of the vehicle's imaginary center line extension in Figure 5.

The outer or rear part of the drawbar 5 is tubular and telescopically encloses the tubular arm 8, which forms an extension of the axially movable and also rotatable drawbar. As can be seen particularly well from Fig. 6, the tubular part of the drawbar 5 comprises a helical guide groove 9, the edges of which are reinforced and in which groove a radially projecting pin 10 arranged in the part of the arm 8 surrounded by the drawbar runs. In practice, this guide pin 10 is surrounded by a sleeve-like bearing so that it can run lightly in the guide groove 9, and the guide groove is at least partially covered by cover pieces (not shown) so that the drawbar 5 is not weakened by the groove. The guide groove 8 extends just around the screw rod drawbar 5 so that the arm 8 rotates 360 ° when the guide pin 10 is moved between both ends of the groove 9, whereby a corresponding axial displacement of the arm in the same proportion is of course necessary.

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Such an axial displacement of the arm 8 can be provided by a double-acting hydraulic cylinder 11 arranged inside the drawbar, the cylinder head of which is non-rotatably connected to the drawbar by a transverse guide pin and the piston end of , forms a further small end for a shovel-shaped sliding plate or container 15 fixedly connected to the arm 8, or it may also be provided with a member, for example a quick coupler, for its detachable but rigid connection with the front end of the container. In the case shown, the blank 15 is connected to the arm 8 so as to obtain an advantageous position for towing according to Figures 1, 3 and 5 when the arm 8 is in one of its end positions axially relative to the drawbar 5. From its inverted position according to Figures 2, 4 and 7 the guide pin 10 is thus in the middle position in the guide groove 9, the shank 15 can then be tilted or turned over to the transport position in the desired direction of rotation by means of the hydraulic cylinder 11.

The shape of the oven 15 is, as already mentioned, mainly oriented backwards from the vehicle and an open, round-shaped shovel at the back! a bucket shape on which the arm 8 forms a kind of arm or handle. As is clear from Figures 1, 2 and 7, at least the rearmost part of the length of the shank is on one side along the thought extension of the arm 8 connected to the drawbar 5, i.e. the shank is laterally off-axis 20 so that this axis of rotation at least approximately coincides with the longitudinal axis T . During towing, the abutment may be provided with longitudinal, surface-following and preferably replaceable reinforcements on its surface resting against the ground, especially if the abutment is formed as a self-supporting, rigid plate structure. However, the ingot may also have a stiffening body, not shown here, possibly with a surface layer made of several shaped parts, for example an aluminum plate, which layer is removable so that it can be replaced after heavy wear or if it is distorted.

On its inner side, i.e. above during towing, in the case 15, in the present case, there is a gripping device fixed in its case by its reinforcing frame, which is described in its entirety as 16 and fixed to the last third of the length of the hopper to grip and hold the transport unit T towed by the vehicle. This gripper 16 can also be used to grip and handle objects, such as logs, which need to be assembled into bundle-shaped units suitable for transport. The gripper 16 comprises a pair of cooperating gripping claws 17 and 18 which pivot towards and away from each other, one of which, namely the number 18, is double or fork-shaped so that the claws can be passed transversely transversely to the axis of rotation and substantially vertically.

The shape and size of the gripper 16 are such that the length of the axis of rotation at least approximately coincides with the length axis of the largest transport unit around which the gripper is able to grip. In the example shown, the gripping of the gripping nails 17, 18 takes place by means of a single, double-acting hydraulic device 19 common to both. However, it is possible and sometimes advantageous to use a similar device 19 for each gripper nail separately, whereby both devices can be hydraulically balanced with each other so that the claws continuously hold the transport unit approximately in the middle of the container during towing.

The hydraulic cylinder devices 3, 6, 11 and 19 included in the device can be remotely controlled in a known manner from the position of the driver of the towing vehicle 1 and / or from some other suitable location. Thus, in its inverted position shown in Figures 2, 4 and 7, the crate can be used approximately as a "mechanical hand" to lift and move individual scattered logs, etc. before the resulting bundle is gripped, such as a transport unit and rolled into the crate by tilting it for towing. . The latter operation of the device, of course, requires that the coulter be raised by means of a drawbar so that, even when the gripping claws are in their outer position, they can freely pass the conveying transport unit from above, which is the largest diameter, so that it can continue to grip the conveying unit from above. Of course, the above-mentioned assembly of individual objects can also be facilitated by moving the towing vehicle itself 1.

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Since the cavity 15 forms a rigid extension on the arm 8 and thus also on the drawbar 5, the device can be used as an aid for "tail steering" of the vehicle, i.e. the direction of travel of the towing vehicle can be adjusted by means of a cylinder device 6 if its wheel steering is not able to provide the required steering force. forcibly change the horizontal angle between the drawbar 5 and the center line of the towing vehicle. Equally, the device can be used as an anti-roll device for the towing vehicle, so that the hopper 15 is pressed against the ground with a suitable force by means of a cylinder device 3. Both of these possibilities can substantially facilitate the performance of the desired transport, especially on unfamiliar terrain and on poorly surfaced roads, especially when the ground is covered with snow.

Figures 1-7 require that the holder 4 to which the frame 2 is attached is suitably mounted on the towing vehicle and that the cylinder device 3 for moving the frame 2 in the vertical plane is fixedly connected to the towing vehicle. However, in certain cases - and this applies in particular to agricultural tractors - the towing vehicle is already equipped with a so-called With a 3-point lifting device which is normally used to support other types of tools, such as plows, etc. in a suitable working position and also to lift similar tools. In that case, this tool lifting mechanism, known in several variations, can be used to support the device described herein as well as to provide its vertical movement. Fig. 8 shows an example in which the holder 4 and the frame 2 are suitably connected to a rigid unit and this unit is detachably attached to the support arms 21 of a tool lifting mechanism by means of two parallel horizontal pivots 22. Moreover, the highest point of the frame normally operates in the cylinder 3 as a joint, connected by a fixed holder in the middle of the rear of the tractor to an articulated rod 23 which is normally adjustable in length and also part of the tool-lifting mechanism. take place around a pivot point in the body of the tractor, while the lateral movement of the drawbar is continuously effected by means of the cylinder device 6.

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Although the rotation of the coulter 15 about the shaft 20 in the example described takes place by using a hydraulic cylinder 11, the operation of this hydraulic cylinder can of course be facilitated by driving the tractor forwards or backwards, especially if the coulter and the conveying unit have an unfavorable rolling position. .

Of course, the embodiment shown and described herein is not to be construed as limiting the invention, as various embodiments can be considered, in particular in terms of details, within the scope of the following claims, without departing from the spirit of the invention.

Claims (9)

62792 9 A device for towing an elongate conveying unit (T), for example individual logs, pipes, rods, etc. or bundles thereof, comprising a shovel-like sliding plate or cavity (15) for supporting the front end of the conveying unit during towing, the gripping member (16) holding the conveying unit in position, wherein its front end is in front of the back end of the crank and the force transmitting means (5, 8) connecting the crank and the gripping member to the towing vehicle (1) and shaped to allow the transport unit held by the crank and the gripper to rotate about an axis at least approximately in the traction direction and further to laterally roll the conveyor unit from a first position in which it is entirely on the ground under the cone to a second position where its front end is on the cone so that the conveyor unit is ready to be towed forward by the traction vehicle, characterized in that the front end of the cone (15) tty arm (8) forming an extension of the rotating drawbar (5) about said axis of rotation (20), which in turn is supported by the towing vehicle (1) and which is controlled to rotate relative to the vehicle both vertically and horizontally, the arm and thus the crank being rotatably controlled relative to the drawbar via a rotating device (9-11) accessible from the towing vehicle and that the gripper (16) is fixedly attached to the inside of the hopper to hold the transport unit (T) continuously in the hopper. Device according to Claim 1, characterized in that at least the rear half of the length of the blank (15) is located on one side of the intended extension of the drawbar (5). Device according to Claim 1 or 2, characterized in that the arm (8) and thus also the blank (15) can rotate by at least 180 ° and preferably 360 ° by means of a rotating device (9 to 11). relative to the drawbar (5). Device according to one of the preceding claims, characterized in that the arm (8) connected to the blank (15) is, moreover, axially movable relative to the drawbar (5) by means of a double-acting cylinder device (11) which is preferably mounted inside the drawbar. Device according to claim 4, characterized in that the arm (8) is connected to the drawbar (5) by a mechanism (9, 10) comprising a helical guide (9) and a guide pin (10) cooperating therewith, which provides a rotational movement of the arm relative to to the drawbar when the shaft is moved in the axial direction, this mechanism together with the cylinder device (11) forming a rotating device (9 - 11). Device according to one of the preceding claims, characterized in that the gripper (16), most preferably attached to the rear half of the length of the hopper (15), comprises at least two gripping claws (17, 18) pivoting against each other and working transversely to the axis of rotation of the hopper. (20), at least for the most part in a vertical plane and are moved by at least one remote-controlled device (19) from the towing vehicle (1). Device according to Claim 6, characterized in that the gripping nails (17, 18) of the gripper (16) are shaped and arranged in such a way that they move past each other during their gripping movement. Device according to one of the preceding claims, characterized in that the drawbar (5) pivots vertically between a first, lower position in which the blank (15) can rest on the ground and a second, upper position, the blank being turned in opposite and downward directions by at least the partially folded gripping claws (17, 18) have a ground clearance that exceeds the maximum height of the gripping transport unit (T). Device according to Claim 8, characterized in that the drawbar (5) pivots laterally relative to the towing vehicle (1) by at least 30 ° or more on each side of the extension of the center line of the towing vehicle. 62792 11