FI128558B - Accessory for a timber grapple and method for maintaining a wood handling field - Google Patents

Abstract

The invention relates to an additional device for a timber gripper, which timber gripper (100) is intended for a wheel loader (101) and which timber gripper (100) has a fixedly arranged part (102), which comprises fork tips (103) and a movably arranged part (104). , which can be loaded against the fixedly arranged part to provide a timber grip which can be closed openably. The additional device (10) comprises a body (11) provided with tunneling (12) for the fork tips of the timber gripper to connect the additional device to the timber gripper (100), a plow gate (14) pivotally arranged in the body, to which a road maintenance device (13) can be arranged, such as for example a plow (13 '), and a locking mechanism (15) which can be closed openably arranged between the body and the plow gate to set the direction of the road maintenance device (O1 - O3). In addition, the invention relates to a method, for example, for maintaining a wood handling field in condition.

Description

ACCESSORY FOR LOG GRILL AND METHOD OF WOOD PROCESSING

The invention relates to an accessory for a log grapple, which log grapple is intended for a wheel loader and which comprises: - a fixedly fitted part comprising a spike, - a movably fitted part which can be loaded towards a fixedly fitted part provided with tunneling for the log grapple prong to take over the accessory to the log grapple. In addition, the invention also relates to a method for maintaining a wood processing field.

For example, at sawmills, the loads of timber trucks or railcars are unloaded bundle by bundle with a log grab arranged in a wheel loader, which are also called log pliers. Log grapples are primarily used to process long timber in various sectors of the wood processing industry. In addition to unloading the loads, they can be used to move wood internally at the sawmill and also to sort the timber. All this activity typically takes place in the sky under weathering.

N In winter, activities are strained by snow and ice. During a hard and continuous cycle, the maintenance of wheel loader driving routes requires almost constant plowing, which binds resources. The work may> involve the work input of one wheel loader or even an external contractor may have to be used. The snow and burrows of log field I should be removed in order to provide a safe 3 driving route for the work machines. In addition, all kinds of irregularities in the N log field are a great burden on large machines, especially when they are moving in their full load. In this case, the weight of a large implement can be up to tens of tons.

Well-maintained driving routes would speed up the smoothness of work and thereby also affect work efficiency. The object of the invention is to provide an additional device for a log grapple and a method for maintaining a wood processing field, for example. The characteristic features of the invention are set out in claims 1 and 10.

With the invention, it is possible to perform property maintenance operations, such as plowing, with a wheel loader equipped with a log grapple. The attachment and the plow arranged on it can be easily and quickly connected to the log grapple.

The invention also makes it possible to reorient the plow in a simple and effortless manner. For this purpose, the accessory does not require any separate means or force required for it. The device according to the invention therefore has all the same features as a hydraulically operated plow. Everything in the device works mechanically. In addition, the attachment can be connected and the plow connected to it can be turned quickly and even without descending from the driver's machine. Other additional advantages achieved by the invention will be apparent from the specification and features from the appended claims.

The invention, which is not limited to the embodiment shown below, will be described in more detail with reference to the accompanying figures, in which Figures 1a and 1b show an example of a wheel loader with a log grapple 3 with the grapple N closed and open,

Fig. 2 shows a wheel loader with its log grapple equipped with an accessory according to the invention, Fig. 3 shows an example of an attachment to the log grapple seen from above, Fig. show a cross-section of the accessory seen from the side with the orientation lock open and closed, Fig. 6 shows the accessory seen obliquely from the front and Figs. 7a to 7c show the accessory in its various orientations.

Figure 1a shows an example of a wheel loader 101 equipped with a log grapple 100. The wheel loader 101 is frame-controlled. In this case, it comprises two parts, the front part 101.1 and the rear part 101.2. The log grapple 100 is arranged in the front part 101.1, which has a lifting device 106 known per se with hydraulic actuators. In the rear part 101.2, in turn, the cab 108 of the wheel loader 101 is arranged. Both parts 101.1, 101.2 also have wheel pairs 109.1, 109.2.

S 0 The front part 101.1 and the rear part 101.2 are articulated 7 to each other to implement frame control for the wheel loader> 101. The articulation point is denoted in Fig. 1a by reference number 107. The front and rear parts 101.1, 101.2 are connected to each other by hydraulic actuators (not presented). They cause the parts 101.1, 101.2 to pivot relative to each other and thus also to control the S wheel loader 101.

The log grapple 100 arranged on the wheel loader 101 is intended, for example, for the wheel loader 101 and is attached to its lifting device 106 in a manner known per se. The log grapple 100 comprises a fixedly fitted part 102, a lower jaw, and a movably fitted part 104, an upper jaw. The lower jaw 102 includes a spike 103. In this case, it includes two spikes 110 on each side of the fixedly fitted portion 102, now forming a fork in the grapple. The fixedly fitted part 102 forms a side-opening U-profile.

The upper jaw, i.e. the movably arranged part 104 of the log grapple 100, in turn, can be pivoted and thus also loaded towards the fixedly fitted part 102, i.e. the lower jaw, in order to provide a detachably closable log grapple 100. To this end, the upper jaw 104 is pivotally articulated to the fixed part 102 at one end thereof and provided with corresponding actuators. At its other, opposite end, the log grapple 100 closed, the upper jaw may correspond to the lower jaw, more particularly, for example, to the fork tips for holding a load 105 in connection with the log grapple 100 when it is closed. In other words, when closed, the parts 102, 104 of the log grapple 100 form a main closed circuit, a grapple within which the load remains securely when it is transported by the wheel loader 101. Instead of a closed circuit, the load 105 can also be compressed by the movable part 104 towards the structures of the fixed part 102 and the housing formed by it. Figure 1b, on the other hand, shows the t-N lumbar with the log grapple 100 open, i.e. with the upper jaw 7 turned up. In this position, it is possible to take or deliver a load to the log grapple 101. S 30 I Fig. 3 shows an example of the accessory 10 for the log grapple 100 seen from above and S Fig. 6 seen obliquely from the front. With the accessory 10, the possibilities of using the log grapple 100 can also be diversified for property maintenance. The accessory 10 includes a frame 11 and a push rod 14 pivotally fitted to the frame 11. The frame 11 is provided with a tunneling 12 for the spike 103 of the log grapple 100 to take over the attachment 10 and thus also to connect it to the log grapple 100. Tunneling 12 5 can also be described as The tunneling 12 is formed in the body 11 on its upper surface at opposite edges of the body 11. In this case, the tunneling 12 is parallel to the prong 103 of the log grapple 100. In addition, the tunneling 12 is now formed in the shape of the lower jaw 102 of the log grapple 100.

In this case, the height of the tunneling 12 increases in the direction of the grapple 100 and lowers towards the tips of the fork. The large and high inlet of the tunneling 12 also allows the accessory 10 to be easily picked up in connection with the log grapple 100.

A road maintenance device 13, such as a plow 13 ', can be fitted to the push stand 14. The plow 13 ”can be intended, for example, for plowing snow and also for removing polant. For the plow 13 ', the push stand 14 has lugs 20 for releasably attaching the plow 13' or other similar road maintenance device 13. Thus, instead of the accessory 10, it is also possible to speak more specifically of an adapter or a connection adapter.

The accessory 10 further comprises a releasably lockable locking mechanism 15 arranged between the body 11 and the push stand 14 for setting the orientation 01 to 03 N of the road maintenance device 13 (Figs. 7a to 7c). Here, setting means, in particular, changing and securing the orientation Ol-03 for the work operation. The pusher 14 is provided with two or more orientations 01 to 03 in the body 11, to which it I can be openably locked by a locking mechanism 15.

o S Fig. 4a shows the pusher 14 of the accessory 10 seen from the side in cross section and Fig. 4b seen from the same top. The push rod 14 is fitted to the frame 11 articulated

found to change its direction from 01 to 03.

The articulation point fitted to the frame 11 is numbered 21 in Fig. 3 and the articulation point fitted to the push stand 14 is numbered 22 in Figures 4a and 4b. Thus, the articulation points 21, 22 pivotally provide the plow part to the body 11.

Trends 01 to 03 are shown in Figures 7a to 7c.

In order to provide orientations 01 to 03, the locking mechanism 15 for the push stand 14 comprises two or more locking members 17.1 to 17.3 arranged for movement and locking responses 17.1 to 17.3 arranged for the locking member 16.

In the case of the embodiment, the locking member 16 is fitted to the body 11 of the accessory 10 and the locking stops 17.1 to 17.3 are fitted to the push stand 14. The locking member 16 belonging to the locking mechanism 15 is pivotally articulated to the body 11.

To this end, the body 11 has flanges 23 forming articulation lugs 23 on its upper surface. Between the flanges 23 there is a locking latch 24 articulated to the flanges 23 by a pivot pin 25. 11 an opening through which it is possible to extend inside the body 11 and into the extension 27 of the push beam 14 fitted therein, into which the locking stops 17.1 to 17.3 are in turn fitted.

Thus, in the locked position, the pin 26 extends at least up to or even through the locking stops 17.1 to 17.3. g K The locking member 16 is provided with a drive stop 19 for loading the locking member> 16 into the locking stop 17.1 to 17.3 to provide a lock S 30.

The drive stop 19 is arranged in relation to the body 11 of the accessory 10 and in particular to the locking member 16 so that it can be loaded by the part 104 adapted to move the log grapple 100 and more particularly by the tip or flap of the upper jaw.

In this case, the operating stop 19 can be pressed with the tip of the upper jaw to provide a locking.

Activities

will be described in more detail in the description a little later in connection with the description of the method.

The drive stop 19 may be arranged between the pivot pin 25 and the locking pin 26 or on the locking pin 26.

The locking member 16 is provided with a self-powered return 18 for unlocking.

In this way, the unlocking also takes place without the need to leave the implement 101.

According to one embodiment, the self-powered retractor 18 can be implemented with, for example, a tensioned coil spring 28 fitted to the pivot pin 25 shown in Fig. 3. Another way is to use rubber restorers 31 between, for example, the locking latch 24 and the body 11 (Fig. 6). It raises the locking latch 24 and thus lifts the locking pin 26 away from the connection of the locking stop 17.1 to 17.3.

Figure 6 also shows the attachment lugs 32 of the support rod of the plow 13 'fitted to the push stand 14. Referring to Figures 4a and 4b, the locking stops 17.1 to 17.3 are openings fitted to the push stand 14, locking holes.

The locking stops 17.1, 17.3 are arranged on the push stand 14 in an arcuate arrangement.

While on the arc of a circle with respect to the hinge point, the locking pin 26 hits the holes 17.1, 17.3 in different directions of the plow 13 ”.

It allows the pusher 14 to be oriented on both sides with respect to one pivot point.

At the base of the extension 27 of the pusher 14 before the spread 29, the cuts 30 allow the pusher 14 to pivot horizontally with respect to the body 11 and thus its orientation to the sides.

N Thus, the push stand 14 is narrower at the end of the locking stops 17.1 to 17.3.

Circulation 29 can also be referred to herein as a buffer beam.

S 30 I The frame 11 and / or the push stand 14 can be a housing structure made of plate sections.

It makes them strong and sufficiently rigid, also in the lateral orientations 02, 03 of the road maintenance device 13. When the accessory 10 is assembled, the push stand 14 is inside its housing structure formed by the body 11.

up to 30 reductions for 27. Thus, the body 11 is adapted to partially enclose the pusher 14. The center of gravity of the pusher 14 and the road maintenance device 13 fitted thereto is arranged at a distance from the frame 11. This contributes to facilitating the orientation of the road maintenance device 13 with the lateral movement of the wheel loader 101. In addition to the accessory 10, the invention also relates to a method for maintaining, for example, a wood processing field and / or other similar area in which, for example, a wheel loader 101 is operated and to which the operation of the accessory 10 when used with a wheel loader 101 will be described. In the method, the operation in the wood processing field or the like is performed by a frame-controlled wheel loader 101. Here, the wood processing field refers to, for example, the yard areas of wood processing plants, such as sawmills. Thus, in the context of the invention, the wood processing field should not be construed as limiting in any way, but the operation according to the invention is possible equally in the entire area of the property, i.e. on other routes than where timber is stored and moved. The method uses an auxiliary device 10 according to the invention equipped with a road maintenance device 13, such as, for example, a dozer plow 13 ”in the log grapple of a frame-controlled wheel loader 101

100.

S & 0 Fig. 7a shows a situation in which the plow 13 'is directed 7 forward, i.e. pushing in the direction of travel of the wheel loader 101. > The accessory 10 can be picked up in the log grapple 100 in all its orientations 01-30 in its S 30. This is done by driving the log grapple 101 with the log grapple 100 open, i.e. the moving part 104 of the grapple raised up towards the accessory 10 on the body 11 side. approaching. With the lifting device 106 and the associated tilt, the height of the log grapple 100 and the position of the prong 103 are set so that the prongs 110 of the prong 103 are mainly at and parallel to the level of the tunneling 12. In this way, the spikes 110 of the prong 103 can be threaded inside the tunneling 12, i.e. the sheaths, and the accessory 10 is picked up in connection with the log grapple 100.

with the log grapple 100 of the accessory 10, after picking up and taking over, the orientation of the plow 13 'is locked. This is done by closing the log grapple 100 with its movable part 104. In this case, the tip part of the upper jaw is pressed against the operating response 19 of the locking member 16 of the accessory 10. As a result, the locking member 16 and the locking pin 26 therein are pressed downwards, preferably applying to the central locking stop 17.1. Figure 5b shows this locked situation. With the upper jaw of the grapple, the accessory 10 is also made to remain in the grapple 100, for example in deceleration situations, if the plow 13 ”is supported in the air, for example. In the plow 13 ”the plowing takes place when the grapple 100 is in the lower position so that the lower edge of the blade of the plow 13 'hits the surface to be plowed as the wheel loader 101 moves.

When you want to change the orientation of the plow 13 ”, it is as follows. The plow 13 'is lifted off the surface to be plowed by a lifting device 106. For orientation, it is advantageous to bring the accessory 10 slightly into such a position that the plow 13 'is in a higher position than the stern end of the body 11. For example, when the wheel loader 101 is stationary, a small reflective steering N movement is made to change the direction of the plow 13 '. Since the wheel loader N 101 is frame-guided, the steering movement also affects its front part 7 101.1 and thus also its lifting device 106 and the grapple therein. It follows that the accessory 10a 30 is also subjected to a lateral force which tends to turn it I. 3 N The reflective steering movement is directed in the direction in which the 13 ”plow is to be turned. Thus, in the case of Fig. 7b, the movement takes place to the left and in the case of Fig. 7c to the right. Grab

100, i.e. the orientation lock, is opened at or at the end of the lateral movement. When the grapple 100 opens, the part 104 adapted to move it, i.e. the upper jaw, disengages from the locking actuating stop 19 and thus the locking of the orientation of the plow 13 ”opens. Figure 5a shows this situation. As a result, the push beam 14 is free to pivot relative to its pivot point 21 fitted to the body 11. The reflective movement is effected in such a way that, immediately following the turning movement in one desired direction, a counter-steering movement is performed, the grapple still open. In this case, the control of the implement is, for example, returned to the straight-ahead position. When the grapple is open, the locking does not take effect and the push stand 14 of the accessory 10 can turn in its original first direction of movement with respect to its articulation point 21. When the desired orientation is reached, the grapple is closed again and as a result the changed orientation of the plow 13 'is locked. Thus, again, the orientation 01 to 03 of the road maintenance device 13 is locked by the moving part 104 of the log grapple 100. A small repair movement may also have to be made if the driver of the wheel loader 100 is untrained with the accessory 10, i.e. the reflective movement has not been sufficient, the grapple opening or closing is incorrect or the position of the accessory 10 in the grapple is not optimal. However, the connection and even reorientation of the accessory 10 takes place relatively quickly and also without the need to get out of the machine. Thus, according to the method, the orientation 01 to 03 of the road maintenance device 13 arranged in the accessory 10 can be changed by the steering movement of the wheel loader 101.

Instead of turning the plow 13 ”as shown above with the plow 13” in the air by slightly loosening the upper jaw or flap of the log grapple 100 and swinging the machine 3 101, it can also be done with the plow 13 on the ground. In this case, the N plow 13 'is pushed against the ground in the direction in which it is to be turned. The plow 13 'is then locked in place again by pressing the flap closed. Equally, here's the plow

The 13 'reorientation is based on the steering movement of the implement 101. With the invention, the driver of the wheel loader 101 can take advantage of the moments of a few minutes that occasionally remain from the actual work run and plow the areas clean. Then you don’t have to wait for someone to come and plow. Once the tire is removed and the icy slippery surface breaks, the driving route is safe. In addition, the invention either even eliminates or at least reduces the need for sanding and salting. Well-maintained driving routes speed up work flow, which affects work efficiency and safety. A very significant advantage is also that the connection of the accessory 10, and in particular the change of its orientation, does not require any hydraulic actuators to the accessory 10, the associated connections or hydraulic force to perform it, but is carried out entirely mechanically. This substantially simplifies the implementation of the accessory 10 and makes it virtually maintenance-free. The invention therefore utilizes the control function of the frame-controlled wheel loader 101 in an ingenious manner to change the orientation of the accessory 10 connected to the log grapple 100. The plow 13 ’can be quickly switched on and the direction changed in just a few seconds. In addition, the connection of the accessory 10 to the wheel loader 101 does not involve the connection of, for example, hydraulic hoses.

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Claims (10)

An additional device for a timber gripper, which timber gripper (100) is intended for a wheel loader (101) and which timber gripper (100) comprises - a fixedly arranged part (102), comprising fork tips (103), - a movably arranged part (104), which can be loaded against the fixed part (102) to provide a timber gripper (100) which can be closed openably, and which additional device (10) is equipped with tunneling (12) for the fork tips (103) of the timber gripper (100) for receiving the attachment device (10) in the timber gripper (100), characterized in that the attachment device (10) comprises - a frame (11) equipped with said tunnel (12), - a sliding gate (14) which can be arranged in the frame (11) , in which a road maintenance device (13), such as for instance a plow (13 ') can be arranged, - an openable closable reading mechanism (15) arranged between the body (11) and the sliding gate (14) for horizontal adjustment of the road maintenance device (13) direction (01 - 03), which reading mechanism (15) comprises - a tube arranged reading means (16) arranged in the body (11) of the additional device (10) and provided with an operating stop (19) for loading the reading means (16) against a reading stop (17.1 N - 17.3) for effecting a locking, 7 - two or more said reading stops (17.1 - - 17.3) arranged for the reading means (16), E 30 and in which additional device (10) said operating stop (19) is arranged in the body (11) of the additional device (10), so that it 3 can be loaded with the movable part N (104) of the timber gripper (100). Additional device according to Claim 1, characterized in that the reading stops (17.1 - 17.3) are arranged in the sliding gate (14). Additional device according to claim 1 or 2, characterized in that the reading means (16) is provided with a self-acting reset (18) for opening the reading. Additional device according to one of Claims 1 to 3, characterized in that the reading stops (17.1 - 17.3) are arranged in the sliding gate (14) in a cup-shaped constellation. Additional device according to one of Claims 1 to 4, characterized in that the body (11) and / or the slider (14) is a capsule construction composed of disc sections. Additional device according to one of Claims 1 to 5, characterized in that the body (11) is arranged to partially enclose the slide (14). Additional device according to one of Claims 1 to 6, characterized in that the sliding gate (14) is arranged to taper towards the end facing the reading stops (17.1 - 17.3). Additional device according to one of Claims 1 to 7, characterized in that the center of gravity of the sliding gate (14) and the road maintenance device (13) arranged therein are arranged at a distance from the body (11). : r Additional device according to one of Claims 1 to 8, characterized in that the reading means (16) belonging to the reading mechanism I (15) is pivotally guided to the body (11). O> S A method of maintaining, for example, a wood handling field, in which the operation of the wood handling field is carried out with a single-frame wheel loader (101), which is equipped with a timber gripper (100), which comprises - a fixed part (102) comprising fork tips ( 103), - a movably arranged part (104), which can be loaded against the fixedly arranged part (102) to provide a timber grip (100) which can be closed openably, and in which timber grip (100) an additional device (10) is arranged equipped with a road maintenance device (13) and tunneling (12) for the fork tips (103) of the timber gripper (100) to receive the attachment device (10) in the timber gripper (100), characterized in that an attachment device (10) is used in the method, which comprises - a body (11) equipped with said tunnel (12), - a sliding gate (14) pivotally arranged in the body (11), in which a road maintenance device (13), such as for instance a plow (13 ') can be arranged, - an openable closable reading mechanism (15) arranged between the frame (11) and the sliding gate (14) for horizontal adjustment of the direction (01 - 03) of the road maintenance device (13), and in which method in addition - the horizontal direction of the road maintenance device (13) arranged in said additional device (10) is changed - 03) with the steering movement of the wheel loader (101), N - the direction of the road maintenance device (13) (01 - 3 03) is locked by acting on the reading mechanism (15) with the movable part (104) of the timber handle (100). Tr a I 3 N