SE2050470A1 - Additional device for a timber grab and procedure for maintenance of joints and areas - Google Patents

Abstract

(57) SUMMARY The invention relates to an additional device (10) for a timber gripper (100), which timber gripper is intended for a wheel loader (101) and which timber gripper has a fixed part (102), comprising fork tips (103), and a movable device 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) is equipped with a tunnel (12) for the fork tips of the timber grapple to receive the additional device in the timber grapple. The additional device further comprises a body (11) provided with said tunnel, a sliding gate (14) pivotally arranged in the body, to which a road maintenance device (13), such as for instance a plow (13 ') can be arranged, and a locking mechanism (15) which can be closed openably arranged between the frame and the sliding gate to set the horizontal direction of the road maintenance device (01 - 03). The locking mechanism in turn comprises a movably arranged locking means (16) arranged in the body of the additional device and provided with an operating stop (19) for loading the locking means against the locking stop (17.1 - 17.3) to provide a locking and two or more said locking stops arranged for the locking means. In addition, in the additional device, said operating stop is arranged in the body of the additional device, so that it can be loaded with the movably arranged part of the timber gripper. In addition, the invention also relates to a method for maintaining joints and areas.

Description

The invention relates to an additional device for a timber gripper, which timber gripper is intended for a wheel loader and which timber gripper comprises a fixed device, comprises a fixed device. part, which can be loaded against the fixedly arranged part to provide a timber gripper which can be closed openably, and which additional device is equipped with tunneling for the fork tips of the timber gripper to receive the additional device in the timber gripper. In addition, the invention also relates to a method for maintaining joints and areas.

At sawmills, for example, the loads of timber trucks or train carriages are unloaded one bundle at a time with a timber grab arranged in a wheel loader. The timber grip is also called timber scissors. The timber grip is used primarily for handling long timber in the various areas of the wood processing industry. In addition to unloading loads, wood can be moved internally at the sawmill and sorting of timber can also be carried out. All this activity typically takes place in the open air exposed to the stresses of the weather.

In winter, the business is burdened by snow and ice. During severe and persistent snowstorms, the maintenance of wheel loaders requires almost continuous plowing, which binds resources. The work may be tied to a wheel loader's work effort or may even have to hire an external contractor. It would be a good idea to remove the timber field's snow and snowdrifts to arrange a safe route for the work machines. In this case, the weight of a large work machine can be up to tens of tonnes. Well-maintained routes would accelerate the flexibility of work and thereby also affect work efficiency.

The object of the invention is to provide an additional device for a timber grip and a method for maintaining leather and areas. The characteristic features of the invention are presented in claims 1 and 10.

With the invention, it is possible to carry out property maintenance maintenance measures, such as plowing, with a wheel loader equipped with a timber grab. The auxiliary device and the plow arranged therein can be easily and quickly connected to the timber gripper.

Since. the invention is also made possible by simple and. re-orientation of the plow. For this purpose, the auxiliary device does not need at all separate actuators or power required for them, which are expressly provided for this purpose. The device according to the invention all have the same properties as a hydraulically operating plow. In the device, everything works mechanically. In addition, the coupling of the auxiliary device and the pivoting of the plow connected thereto can take place quickly and even without the driver having to descend from the machine. Other additional advantages achieved by the invention appear from the description part and the features of the appended claims.

The invention, which is not limited to the embodiment presented below, is explained in more detail with reference to the accompanying figures, in which Figures 1a and 1b show an example of a wheel loader equipped with a timber gripper, when the gripper is closed and open, Figure 2 shows the wheel loader, when its timber gripper is equipped with an additional device according to the invention, Figure 3 shows an example of the additional device pre-timber gripper seen from above, Figure 4a shows the additional device's sliding gate in cross-section from the side, Figure 4b shows the additional device's sliding gate from above, Figure 5a and 5b show the additional cutting device in the side seen, when the directional lock is open and closed, Figure 6 shows the additional device obliquely in front and Figures 7a - 7c show the additional device in its different directions.

Figure 1a shows an example of a wheel loader 101 equipped with a timber grapple 100. The wheel loader 10l is frame controlled. In this case, it comprises two parts, a front part 101.1 and a rear part 101.2. The gripper 100 is arranged in the front part 101.1, which has a per se known lifting device 106 with hydraulic actuators. In the rear part 101.2, in turn, the wheel loader 108 of the wheel loader 101 is arranged. Both parts 101.1, 101.2 also have pairs of wheels 101.1, 10.9.2. The front part 101.1 and the rear part 101.2 are mutually hinged for 10. to realize the frame control of the wheel loader The guide point is given in figure 1a with reference numeral 107. IlO1.2 connected to each other it is the front and rear part 10l.l, by hydraulic actuators (not shown). With them an oscillation of the parts 101.1, 101.2 in relation to each other and thus also the steering of the wheel loader 101 is effected.

The timber gripper 100 arranged in the wheel loader 101 is intended, for example, for the wheel loader 101 and it is fastened in a manner known per se in its lifting device 106. The timber gripper 100 comprises a fixedly arranged part 102, lower jaw, and a movably arranged part 104, upper jaw. The lower jaw 102 comprises fork tips 103. These in this case comprise two fork tips 110 in both sides of the fixedly arranged part 102 forming a fork in the grip. The fixed part 102 forms a U-profile which opens to the side. The upper jaw of the timber gripper 100, i.e. the movably arranged part 104 can in turn be pivoted and thus also loaded against the fixedly arranged part 102, i.e. lower jaw to provide one-hour grip 100 which can be closed openably. For this purpose, the upper jaw 104 is articulated to the fixedly arranged part 102 pivotable at its one end and provided with corresponding actuators. When the timber grip 100 is closed, its second, opposite end, the upper jaw, may correspond to the lower jaw, more specifically, for example, the tips of the fork to hold the load 105 in contact with the timber grip 100 when closed. In other words, then closed, the parts 102, 104 of the timber gripper 100 form a substantially closed circuit, a grip within which the load is held securely during transport with the wheel loader 101. Instead of a closed circuit the load 105 is also pressed with the movably arranged part 104 against the fixed arranged the constructions 102 of the part and the housing then timed therefrom. Figure 1b, on the other hand, shows a situation, the marrow grip 100 is open, ie. when the upper jaw is swung upwards. In this position it is possible to receive or hand over the load in or from the timber gripper 101.

Figure 3 shows an example of the additional device 10 intended for the pre-timber gripper 100 seen from above and Figure 6 obliquely seen from the front. With the additional device 10, the possibilities of using the timber gripper 100 become more versatile even for property maintenance. The additional device 10 comprises a body 11 and a sliding gate pivotally arranged in the body 11. 14.

The sliding gate 14 is arranged pivotably in the body 11 in the horizontal direction. The additional device 11) and more specifically its frame 11 are provided with tunnels 12 for the fork tips 103 of the timber gripper 100 to receive the additional device 10 and thus also connect it to the timber gripper 100. Tunneling 12 can also be referred to more closely as sleeves or fork-tunnel tunnels. The tunnel 12 is formed in the body 11 on its upper surface on opposite edges of the body 11. In this case, the tunnel 12 is parallel to the fork tips 103 of the timber gripper 100. In addition, the tunnel 12 is now formed in the shape of the lower jaw 100 of the timber gripper 100. decreases towards the tips of the fork. The large and high entrance opening of the tunnel 12 also enables easy picking of the additional device 10 in connection with the timber gripper 100.

In the sliding gate 14 a work tool can be arranged, such as for instance a road maintenance device 13, as an example of which an area plow 13 'is shown. The plow 13 'can be intended as an example for plowing snow and in addition also for pre-removing snow banks.

For the plow 13 ', the sliding gate 14 has fittings 20 for detachable attachment of the plow 13' or another corresponding road maintenance device 13. Thus, the maneuvering place for the additional device 10 can also speak of an adapter or connection adapter.

The additional device 10 further comprises an openable closable locking mechanism 15 arranged between the body 11 and the sliding gate 14 for setting the direction O1 - O3 of the road maintenance device 13 (Figures 7a - 7c). This setting specifically determines the change and fixing of the direction O1 - O3 for work action. For the sliding gate 14, two or more directions O1 - O3 are arranged in the frame 11, in which it can be locked openably with the locking mechanism 15. The directions O1 - O3 deviate from each other in the horizontal direction.

Figure 4a shows the sliding gate 14 of the additional device 10 from the side seen in section and figure 4b the same from above. The sliding gate 14 is arranged articulated in the body 11 for changing its horizontal direction O1 - O3. The pivot point arranged in the body 11 is numbered in Figure 3 with reference numeral 21 and the pivot point arranged in the sliding gate 14 is numbered in Figures 4a and 4b with reference numeral 22. Thus the pivot points 21, 22 provide the hinge part of the plow part in the body 11 in a pivotable manner. The pivoting can be realized, for example, with a guide pin which runs through the frame 11 and the sliding gate 14.

The directions O1 - O3 are shown in Figures 7a - 7c.

In order to arrange the directions O1 - O3 for the sliding gate 14, the locking mechanism 15 comprises a movably arranged locking member 16 and two or more locking stops 17.1 - 17.3 arranged for the locking member 16. In the case according to the embodiment, the locking member 16 is arranged in the body 11 of the additional device 10 and the locking stops 17.1 - 17.3 are arranged in the sliding gate 14.

The locking member 16 belonging to the locking mechanism 15 is pivotally hinged to the body 11. For this purpose, the body 11 has flanges 23 on its upper surface which form pivoting fittings. Between the flanges 23 there is a locking latch 24 which, like a swing, is hinged to the flanges 23 with a pivot pin 25. In relation to the pivoting in the opposite end of the locking latch 24, a downwardly directed locking pin 26 is arranged. For the locking pin 26 an opening is arranged in the body 11, via which it is possible for it to extend into the body 11 and to the extension 27 of the sliding gate 14 arranged therein, in which the locking stops 17.1 - 17.3 are in turn arranged. the pin 26 extends in the locked position at least all the way to the locking stops 17.1 - 17.3 or even through them.

The locking member 16 is provided with an operating stop 19 for loading the locking member 16 against the locking stop 17.1 - 17.3 in order to effect a locking. The drive stop 19 is arranged in relation to the body 11 of the additional device 10 and in particular the locking member 16, so that it can be loaded with the movable part 104 of the timber gripper 100 and more particularly with the tip or lid of the upper jaw. In this case, the operating stop 19 can be pressed with the upper jaw tip to achieve a locking. The function is explained in more detail below in the description in connection with the method description. The drive stop 19 can be arranged between the guide pin 25 and the locking pin 26 or on the locking pin 26.

The locking means 16 is provided with a self-acting reset 18 for opening the locking. Thus, the opening of the locking takes place without the need to move away from the working machine 101. The self-acting reset 18 can be realized according to an embodiment, for example with a tensioned coil spring 28 shown in figure 3 arranged in the pivot pin 25. Another way is to use rubber reset 31, for example between the locking latch 24 and the body 11 (Figure 6). It raises the locking latch 24 and thus lifts the locking pin 26 away from the contact with the locking stop 17.1 - 17.3. Figure 6 also shows mounting brackets 32 for the plow 13 'support rod arranged in the sliding gate 14. With reference to Figures 4a and 4b, the locking stops 17.1 - 17.3 in the sliding gate 14 are openings, locking holes. The locking stops 17.1, 17.3 are arranged in the sliding gate 14 in an arcuate constellation. When the locking pin 26 is in relation to the articulation point on the arc of the circle, it strikes in the holes 17.1, 17.3 in the different directions of the plow 13 '. It enables the direction of the sliding gate 14 on both sides in relation to a pivot point. The base 27 of the extension 27 of the sliding gate 14 has cuts 30 before the widening piece 29 in order to enable the pivoting of the sliding gate 14 in the horizontal direction relative to the body 11 and thus thus the direction thereof to the sides. Thus, the sliding gate 14 is narrower at its end facing the locking stops 17.1 - 17.3. The widening piece 29 can here also be called a shaft beam.

The body 11 and / or the sliding gate 14 may be a capsule structure composed of disc sections. This makes them strong and sufficiently rigid, even in directions O2, 03 of the road maintenance device 13 to the sides. When the additional device 10 is assembled, the sliding gate 14 is arranged inside a capsule construction formed by the body 11 with respect to its extension 27 all the way to the frame 11. that partly the loads. 30. Thus, enclosing the sliding gate 14.

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. This in turn facilitates the direction of the road maintenance device 13 in the horizontal direction by the lateral movement of the wheel loader. The additional device 10 also relates to a method for maintaining joints and areas, for example a wood handling field and / or other corresponding area, in which case it operates, for example, with a wheel loader 101 and with reference to which in the following the function of the additional device 10 is explained when it is used with a wheel loader 101. In the procedure, the operation is performed on a wood handling field or equivalent with. a frame-controlled. wheel loader 101. This refers to co-wood handling fields, for example farm areas for wood processing plants, such as saws. Thus, the wood handling field should not be interpreted in the context of the invention as in any way limiting, but activities according to the invention are possible just as well on the entire area of the property, ie also on other routes than where timber is stored and moved. Some other examples of trails that are maintained with additional device 10 can be, for example, roads and light traffic trails and in areas such as parking lots. In the method an additional device 10 according to the invention is used equipped with a road maintenance device 13, such as for instance a dozer plow 13 'in the timber gripper 100 of the steered wheel loader 101 is directed forward. Figure 7a shows a situation where the plow 13' i.e. . disappointing in the wheel loader's 101 direction of travel. The additional device 10 can be picked up in the timber gripper 100 in all its directions O1 - 03. It happens that with the wheel loader 101 the timber gripper 100 is driven open, ie. with the movable part 104 of the gripper lifted upwards towards the additional device 10 approaching from the side of the body 11. With the lifting device 106 and the associated tilting means the height of the timber gripper 100 and the position of the fork tips 103 are adjusted so that the tips 110 of the fork tips 103 are substantially in the plane of the tunnel 12 and parallel thereto. In this way the cone fork tips 103 110 are entered into the tips of the tunnel 12, i.e. sleeves and the additional device 10 are picked in connection with the timber gripper 100.

With the timber grip 100 of the additional device 10, the direction of the plow 13 'is locked after picking up and receiving. This is done by closing the timber gripper 100 with its movably arranged part 104. Hereby the tip part of the upper jaw 100 of the timber gripper 100 is pressed, i.e. movably arranged part 104 against the operating stop 19 for the upper member 10 of the additional device 10 arranged as a result. 16 and the locking pin 26 therein preferably downwardly seeking to the middle locking stop 17.1. Figure 5b shows this locked situation. With the upper jaw of the grip, the additional device 10 can also be held in the grip 100, for example in sacking situations, if the plow 13 'is supported, for example in the air. Plowing with the plow 13 'takes place when the gripper 100 is in its lower position, so that the lower edge of the plow 13' blade hits the surface to be plowed when the wheel loader 101 moves.

When it is desired to change the horizontal direction of the plow 13 ', this is done in the following manner. The plow 13 'is lifted from the surface to be plowed with the lifting device 106. For direction, it is advantageous to have the additional device 10 slightly in such a position that the plow 13' is in a higher position than the rear end of the frame 11. For example, when the wheel loader 101 is in place, a slight tilting steering movement is performed to change the direction of the plow 13 '. Since the wheel loader 101 is frame controlled, the steering movement also affects its front part 101.1 and thus at the same time also its lifting device 106 and the gripper therein. It follows that even to the auxiliary device 10 a lateral force is directed, which tends to pivot it in the horizontal direction.

The tilting steering movement is also directed in the direction in which it is desired to turn the plow 13 'in. In the case of Figure 7b, the movement thus takes place to the left and in the case of Figure 7c to the right. Thus one can speak of a direction in the horizontal direction or horizontally. Gripen 100 ie. the locking of the direction is opened in the final stage of the lateral movement or "at its end. When the gripper 100 is opened, its movably arranged part 104, i.e. the upper jaw, detaches from the operating stop 19 of the locking, and thus the reading of the direction of the plow 13 'is opened. As a result, the sliding gate 14 can pivot freely relative to its articulation point 21 arranged in the body 11 therefore. The tilting movement is effected so that, as a continuation of a pivoting movement performed in a desired direction, immediately opposite directional steering movement is performed, still with the gripper Thus, in this case, the control of the working machine is reset, for example in a straight-ahead position.When the gripper is open, the locking does not affect and the sliding gate 14 of the additional device 10 will swing relative to its articulation point 21 in the original first movement direction.

When desired. direction 'has been reached, the gripper is closed again and as a result the changed direction of the plow 13' is locked. Thus, the direction O1 - O3 of the road maintenance device 13 is locked again with the movably arranged part 11104 of the timber gripper 100. A small correction movement can also be of necessity, if the driver of the wheel loader 100 is above the additional device 10, ie. an heeling movement has not been sufficient, the opening or closing time of the gripper has been incorrect or the position of the additional device 10 in the gripper is not optimal. However, connection of the additional device 10 or even realignment relatively quickly and also without having to step away from the machine. Thus, in accordance with the method, the direction O1 - O3 of the road maintenance device 13 provided in the additional device 10 can be changed simply and easily with the steering movement of the wheel loader 101.

Instead of the pivoting of the plow 13 'taking place in the manner described above when the plow 13' is in the air by loosening a little the upper jaw of the timber gripper 100, i.e. lOl, the lid and the swinging machine can also be done when the plow l3 is on the ground. In this case, the plow 13 'is pushed against the ground in the direction in which it is desired to turn it. Then the plow 13' is locked in place again by pressing the lid. Plowing can then be carried out with the wheel loader 101 forward when the plow 13 'is towards the ground. Likewise, the direction of the plow 13 'again in this case is also based on the steering movement of the working machine 101.

With the invention, the driver of the wheel loader 10Ol can utilize the moments of a few minutes that are left over from time to time from the actual work driving to plow areas clean. In this case, one does not have to wait for someone to come and plow. When the snow bank has been removed and the icy slippery surface split, the route safe again. The activity can be carried out in addition to the wheel loader's usual operating environment in addition to examples in the neighborhood. In addition, the invention can either even eliminate or at least reduce the need for also sanding and salting. Well-maintained routes accelerate the flexibility of work, which affects work efficiency and safety. A considerable advantage is also that the connection of the additional device 10 and. in particular, changing the direction thereof does not at all require hydraulic actuators in the auxiliary device 10, connecting couplings or hydraulic force to perform it, but it is done completely mechanically. This substantially simplifies the implementation of the additional device 10 and makes the yard virtually maintenance-free. In the invention, in a ingenious manner, the control function of the frame-guided wheel loader 101 is used to change the horizontal direction of the additional device 10 connected to the timber gripper 100. The plow l3 'can be quickly connected to the wheel loader 10l and the direction is changed on only a few se-customers. In addition, the coupling of the additional device 10 to the wheel loader 101 has nothing to do, for example, with the connection of hydraulic hoses.

Claims (11)

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), which comprises fork tips (103), - a movably arranged part (104), which can be loaded against the fixed part (102) to provide a timber grip (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) so that the receiving attachment device (10) in the timber gripper (100), characterized in that the attachment device (10) comprises a frame (11) equipped with said tunneling (12), - one in the frame (11) pivotally arranged. sliding gate (14), in which a road maintenance device (13), such as a plow (13 ') can be arranged, - an openable closable reading mechanism (15) arranged between the body (11) and the sliding gate (14) for adjusting the road maintenance device (13). horizontal direction (O1 - O3), which reading mechanism (15) comprises a movably arranged reading means (16) arranged in the body (11) of the additional device (10) and provided with an operating stop (19) for loading the locking means. (16) against a reading stop (17.1 - 17.3) for effecting a reading, - two or more said locking stops (17.1 -17.3) arranged for the locking means (16), and in which additional device (10) said operating stop (19) is arranged in the additional device (10) frame (11), so that it can be loaded with the movable part (104) of the timber gripper (100). 14 Additional device according to Claim 1, characterized in that the locking stops (17.1 - 17.3) are arranged in the sliding gate (14). Additional device according to claim 1 or 2, (16) characterized in that the locking means (18) is provided with a self-acting reset to open the locking. Additional device according to one of Claims 1 to 3, characterized in in that the locking stops (17.1 - 17.3) are arranged in the sliding gate (14) in an arcuate constellation. Additional device according to one of Claims 1 to 4, characterized in that the body (11) and / or the sliding gate (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 sliding gate (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 locking 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 frame (11). Additional device according to one of Claims 1 to 8, characterized in that the locking member belonging to the locking mechanism (15) (16) is pivotally guided to the body (11). A method for maintaining joints and areas, which is carried out with a frame-guided wheel loader (101), which is equipped with a timber gripper (100), which comprises - a fixedly arranged part (102), which comprises fork tips (103 ), - a movably arranged part (104), which can be loaded against the fixedly arranged part (102) to provide a (100) (100) timber grip which can be closed openably, and in which timber grip is arranged an additional device (10) equipped with a road maintenance device (13) and tunneling (12) for the fork tips (103) of the timber gripper (100) so that the receiving attachment device (10) in the timber gripper (100), characterized in that in the method an attachment device (10) is used, which comprises a frame (11) equipped with said tunneling (12), - a sliding gate (14) pivotally arranged in the body (11), in which a road maintenance device (13), such as for example a plow (13 ') can be arranged, - an openable closable locking mechanism (15) arranged between the body (11) and the sliding gate (14) for setting the Road the horizontal direction of the maintenance device (13) (O1 - 03), and in which procedure the horizontal direction of the road maintenance device arranged in said additional device (10) is also changed - - 03) (13) (101) (13) (15) (O1 with the steering movement of the wheel loader, - the direction of the road maintenance device (O1 - O3) is locked by acting on the locking mechanism with the movable part (104) of the timber handle (100). Method according to Claim 10, characterized in that an additional device (10) according to one of Claims 2 to 9 is used in the method.