FI117816B - Tractor front linkage - Google Patents

Description

1 f 117816

FIELD OF THE INVENTION

The invention relates to a front lifting device as defined in the preamble of claim 1 ', which is attachable to a work machine and includes a work machine; chassis, two push arms mounted on the chassis and attachment means for attaching the chassis to the machine.

BACKGROUND OF THE INVENTION

Various lifting devices are known in the art for mounting behind or in front of implements. Li-Saxon is known for a variety of front loaders, buckets and plows -15 for tractors and implements. In addition, it is known that a variety of implements can be attached to front loaders.

Prior art conventional lifting devices mounted behind and front of the machine employ conventional three-point attachment for attaching tools to the lifting device. Conventional lifting equipment, including the frame and articulated drawbar arms, allows the attachment of the attachment; * ·. · To move only in the up and down direction. Perin- • ·. . *. other hoists do nothing ♦ · · * · «. ···. 25 solid and adjustable tilt, mainly * · only obscure lateral movement and lateral stroke • · ·.

• * * ··· * Publication FI 93917 discloses a front or rear attachment for a work machine, comprising: • ·: * ·· 30 work machine-mounted subframes and articulated fittings, • • · ί.,. axial tube? ..j.j on the articulated PTO shaft. In addition, the lifting device includes a three-point linkage supported by a pivot frame and a power unit between the subframe and the pivot frame, which makes it possible to rotate the pivot joint with the axle, "*" * i: 2 117816. Tilting is achieved only by turning the entire lifting device in a certain direction.

Known plows are conventionally mounted on implements such that they are in a constant position f '5 relative to the implement. The plow can only be moved by turning the plow a limited right or left horizontal position to change the plow angle and allow the plowed snow to move more sideways, or by lifting the entire plow up to the horizontal axis.

10 Front-mounted front loaders are often rigid in structure and thus easily disintegrated by impact on a work implement such as a plow. In addition, front loaders easily interfere with driver visibility. The front loaders 15 may have means for moving the plow horizontally, for example

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The problem is that the known lifting devices do not achieve the desired stable inclination, for example according to the road surface. In addition, known devices f '20 do not achieve a sufficiently durable structure. j.

PURPOSE OF THE INVENTION

* ... * The object of the invention is to eliminate the disadvantages mentioned above.

In particular, it is an object of the present invention to provide a new type of front-mounted front hoist; : device that can be adjusted as desired eg?> • · Φ ·.> • * * * /. · * ·. according to the slope of the road surface. j * · ·

: *. 30 SUMMARY OF THE INVENTION

The device according to the invention is characterized by what is stated in the claims. ·. The invention is based on a front lifting device which is • # *** attachable to a work machine and includes a workpiece * "*! 35 machine mounted body, two articulated link arms and attachment means. frame "... i 3 117816 for attaching the part to the implement. Further, the front lifting device includes lifting means fixed to the frame member and connected to the tiller arms, and at least Ϊ; one adjustable and articulated link arm Γ 5 between the drawbars. The lifting means comprise two lifting arms which are connected to the upper end of the frame, Ί and a stiffener beam arranged between the lifting arms. In addition, the front lifting device includes control means for controlling and adjusting the lift arms and lifting means to the desired position. According to the invention, the lifting means include first adjustable power units fitted between the lift arms and the lower end of the frame body and pivotally connected to the lift arms and frame body, and second adjustable power units 15 arranged between the lift arms and the link arms and connected to lift arms and push arms.

Preferably, in the front lifting device according to the invention, the tiller arms are raised and lowered to the desired height so that the implement to be attached to the front lifting device can be moved and tilted as desired, e.g. In a preferred embodiment, the two arms may be moved either at different times or at the same time. . ·. 25 and can be set at different heights ί ··. <Or at the same height.

♦ · In this context, work machine refers to any machine, such as a tractor, forestry machine, • · * ··· *, etc.

In one embodiment of the invention, the frame member ··: * ·· comprises a horizontal beam and vertical beams arranged at each end of the horizontal beam, and first and second fastening means for attaching the frame member to the front and / or sides of the machine; spacers "* 35 arranged between one end of a vertical beam and" * "other fastening means.

• · 4 117816

In one embodiment of the invention, the front lifting device includes side supports that are secured to both sides of the implement frame, to which the body of the front lifting device can be secured by means of fastening means.

5 Side supports make it easy to install the front linkage on the machine. j;

In one embodiment of the invention, the side supports are provided with attachment points to which the body attachment means can be bolted. The side supports 10 are preferably screw-mounted to the implement body, and; the body is preferably screw-mounted to the side supports.

In a preferred embodiment, the lateral support is rigid.

Alternatively, the front linkage device may be attached to its implement from its chassis by any means known in the art.

In one embodiment of the invention, the thrust arms are connected at their first ends to the intermediate beams of the body section and extend to a distance from the front of the implement.

In a preferred embodiment of the invention, at least one frame attachment means, together with the frame member and the tiller arms, are arranged in a form. ···. this direct power line so. pushing line machine tool; to the upper arms when the upper arms are so-called. in the working position. »'* 25 In one embodiment, the other attachment means of the frame member are arranged at an angle such that they form a straight line with the frame member spacer and • • * ··· ί when the frame member is attached to the work machine and the tiller arms are in the working position. In this case, a direct thrust is applied to the thrust arms, and not ·· • * ·. stresses on the rigid structures of the front linkage, so that any impact will not damage the front linkage.

• ·

In one embodiment of the invention, telescopic arms are connected to one end of the uprights *! * 35 at their first ends and to the other ends of the telescopic arms 117816 are provided with connecting members to which the desired tool can be attached.

In one embodiment of the invention, the telescopic !! the arms are adjustable mechanically and / or hydraulically.

By adjusting the telescopic arms with the telescopic arms, the position of the tool to be attached to the front lifting device can be adjusted even more extensively.

In one embodiment of the invention, the front lifting device includes a mounting bracket disposed adjacent to the frame member, preferably a horizontal beam, to provide a three-point attachment together with the tie rods.

In one embodiment of the invention, the lifting arms are connected from their first ends pivotally to the first ends of the vertical beams, and the other ends of the lifting arms extend a distance from the front of the implement. The lifting arms together with the stiffener beam are preferably 20 rigid assemblies, whereby the tool connected to the front lifting device can be held firmly in the desired position. The lift arms can be moved up and down simultaneously.

• · *. ·. : In one embodiment of the invention, power units • · «• ·,. ·. 25 are hydraulic cylinders. Power units are individually adjustable * · · •• l.

• · • ·. '*! Preferably, the first power units operate at the same speed, i.e. they move simultaneously. • · * ··· * The first power units can be used to control, e.g. j 30 simultaneously lift and lower the lift arms. The rigid • · • * ·· lifting arm-stiffener beam construction in combination with the first ":: power units allows for a front linkage.

raising the attached tool even higher.

• · ... The other power units are advantageously controlled • ♦ * “35 individually so that they move at different times or at the same time and at the desired length.

li 6 117816

By means of the first and second power units, the tiller arms can be controlled and moved simultaneously -m or at different times, and thus the tool attached to the ends of the tiller arms can be moved and tilted to the desired position.

In one embodiment, the lifting means includes a "first adjustable link arm disposed between the other ends of the link arms and pivotally connected to the link arms at its ends. The link arms equalize lateral loads.

In one embodiment of the invention, lifting means V

this includes second adjustable support arms arranged in a v-shape disposed between the frame member, preferably the center of the horizontal beam of the frame member, and the other ends of the link arms and connected by a link.

loosely on the frame and the link arms.

In one embodiment, the first linkage is hydraulically or mechanically actuated.

In one embodiment, the second support arms 20 are hydraulically or mechanically actuated.

The control arms provide guidance and support for the movement of the control arms and the work associated with the control arms? . · 1 ·. tilting the device. In addition, the support arms support • · • · ·. ; Upper arms to prevent unnecessary sides - 25 swinging and tilting.

• · · J • · ·

In one embodiment, the front lifting device! 2 ·· 1 includes lateral anti-slip devices to prevent • · · ί ·! : movement of the front linkage or swinging; • · ·: ... · in the upward direction due to the weight load.

30 In one embodiment, a front blade may be attached directly to the front lifting device · 3 4 5; vutukiin.

«·«. The front linkage can be fitted with any 2 ····· :.

3 tools suitable for the brush, such as plow, shovel, 4 • f 5 35 brush, leveling blade, blade, sander or similar.

····· 7 117816

The device according to the invention has significant advantages over the prior art. ;!

The invention provides multiple movement and tilting of the front lifting device and the attachment tool. Thanks to the invention, the implement to be attached to the front lifting device can be tilted, raised and lowered and rotated in a controlled plane to the right and left. In this case, the implement may move in accordance with the shape of the road, irrespective of how the tractor tilts, and the road may be plowed, for example, in accordance with the slope of the road. Further, the front lifting device according to the invention has a higher lifting height than known front lifting devices.

The front lifting device according to the invention can be controlled as desired by the control means. The front hoist can also be automatically controlled according to the road surfaces using the float function in control system i. ;

Due to its structure, the front lifting device according to the invention operates in a more versatile manner than the known front loaders and front lifting devices. The front lifting device according to the invention can perform all the same functions. minnot as a front loader. The lifting device according to the invention has a dual function, i. it includes lifting functions • · «. . ·. 25 and tilt functions.

The front lifting device according to the invention is a very durable device due to its construction. It can withstand big • * · ··· * and loads, and there is no stress on the structures.

♦ ♦ .... * * · .. * In addition, adjustable telescopic trusses and support - .. g, 30 arms apply power to the centerline • »• during tilt for increased safety and: ***: durability of the device.

• · * -v

The front lifting device according to the invention can be retrofitted to existing implements and tractors. In addition, side supports or slots for them can be *: ** factory-fitted on both sides of the front of the machine ····· • · 8 117816 for quick and easy installation of the front linkage.

The front lifting device according to the invention can be || for example in agriculture, forestry and land use; 5 for tractors and other implements used in building maintenance.

LIST OF FIGURES

The invention will now be described in detail with reference to the accompanying drawing, in which: v.

Figure 1 shows a front lifting device according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows a front lifting device 1 according to the invention which can be mounted on the front of a work machine, e.g. a tractor. The front linkage can be fitted with any desired tools, eg plow, 20 bucket, blade, blade, etc.

Front linkage 1 includes rigid machine tools: j ·, · **. 2. The frame includes a horizontal * · · ·, ·. ; a horizontal planar beam 9 arranged in the roof, which is

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* .1 2 3 4 5 adjustable against the front of the implement and mounted on it * · · 25. Further, the body comprises fixed vertical beams 10 at each end of the horizontal beam 9 * · * ··· ', extending for a first distance upward and a second distance downwards from the horizontal beam. In addition, the frame member includes a stationary 1 · .. 30 at one end 10 of the nitrogen beams, i. spacer beams 13 fixedly attached to the lower end 12 The spacer 13 is connected »• 1« ί to the lower part 12 of the vertical beam such that the vertical side 26 of the vertical beam 10 and the top side of the intermediate beam 4 * 1 5 2 7 form an L-angle with respect to each other and the lower surface 28 of the vertical bar ·; ··· 35 and the forward vertical side 2 9 of the intermediate bar form an L-angle notch below the vertical bar 10 9 117816. In addition, the body part 2 comprises upper and lower mounting means 15 for securing the body part to the implement. The upper fastening means 14 are fixedly connected to the horizontal beam 9, and the lower fastening means 15 are fixedly connected to the intermediate beam 13.

Further, the front lifting device 1 includes push arms 3 which are hinged to the lower end of the intermediate beam 13 at their first ends 16. The other ends 17 of the lift arms extend a third distance 10 forward of the front of the implement. Telescopic arms 18 are provided at one end of the pusher arms, and connecting members 21 are provided at the other ends 20 of the telescopic arms to which the desired tool can be attached. The telescopic arms 18 are adjustable mechanically 15 or hydraulically. The telescopic arms 18 are hydraulically operated in the application of the figure. Each telescopic arm can be guided individually or together. The telescopic arms are adjustable and lockable to the desired length.

Further, the front lifting device 1 includes side brackets (not shown) that can be mounted on both sides of the front of the implement, which can be mounted on the sides of the implement, on both sides of the bow. There are side supports. '· * ·, · Bolted to the implement. Front linkage • ·. 25 can be secured to the side brackets • · · • * ·. ···. by means of fastening means 14, 15. Side support includes * 9. t · 'attachment points to which the upper 14 and lower 15 attachment means of the front hoist frame body are fitted; * "* available. Frame 2 is secured with screws to side arm 30. Attaching the front hoist frame to the sidewall and / or implement frame can be done in any manner known per se.

The lower fastening means 15 are arranged at an angle such that they, together with the frame member · · * 1 * 35, form a straight push line with the intermediate beam 13 and the guide arms 3 when the frame member 2 is secured. to the side supports and * '' * Σ upper arms 3 are in the lower position. Doing so- -? 117816 Direct thrust on the tiller arms and the stern of the machine does not rise as a result of strong thrust. In addition, if the implement is connected to the front linkage via a tool; lee strikes the front lifting device, the force of the stroke is transmitted directly to the rigid lateral supports without impacting the front lifting device structures. The side supports can be arranged for the desired length of travel on the sides of the machine, even for almost the entire bow. In this case, the base blade can also be easily attached to the side supports, e.g.

Further, the front lifting device 1 includes lifting means which are connected to the frame part 2 and the lifting arms 3. The lifting means comprise two rigid lifting arms 4, which are rigidly connected by their first 15-pointed ends 22 to the first end of the vertical beam. the upper end 11, and the other ends 23 of which extend a fourth distance from the front of the implement. A horizontal stiffener beam 30 is provided between the lift arms to stiffen the structure. Lifting equipment includes! 20 first adjustable power units 5 connected at their articulated first ends 31 with a lifting arm? in the middle and at one end of the sponges 32 to the other end 12 of the vertical beam 12. Further, the lifting means include other adjustable power units 6 which are connected by a pivot. 25 all the way from the first ends 33 to the other arms * * *, ···. to ends 23 and 34 at one end to the other arms; # * # to ends 17. In addition, lifting equipment includes the first • »·

an adjustable front link arm 7, which is fitted with a drawbar

· "Between the two ends 17 of the sponges, substantially horizontal 30 and articulated thereto, and the other adjustable:" the rear support arms 8 arranged in a v-shape and adapted to the lower center 24 of the horizontal beam 9 of the frame and the other between ends 17 and attached to them by φ ··· φ articulation. The sharp corner of the V-shaped second support arm structure • · "* 35 is connected to the center 24 of the lower part of the horizontal beam 9 '*' * · of the frame and the open ends of the structure are *" *: connected to the other ends 17 of the upper arms.

117816; li

The first 5 and the second 6 power units are hydraulic cylinders. The first adjustable control arm t 7 is a hydraulic cylinder. The other adjustable support arms 8 are mechanically adjustable. The first 7 and, 5, the second support arms 8 smooth the lateral loads in the structure and support the movements of the arms 3, while preventing unwanted lateral movements and tilting of the arms.

In the embodiment of the figure, the various parts 10 of the lifting means are articulated by means of ball joints. They can be articulated in any manner suitable for the application.

j

The joints can be welded to the front linkage. £

The joints are interchangeable. i

Further, the front lifting device 1 includes a retaining lug 25 disposed in the center of the horizontal beam 9 of the frame to provide a three-point attachment together with the thrust arms 3.

Further, the front lifting device 1 includes locking means (not shown) for locking power units, support arms, and other articulated joints.

In addition, the front lifting device 1 includes control means (not shown) for controlling the guide arms 3 and the power ***: devices 5, 6 and / or the support arms 7, 8 and adjusting it to the desired position. The control means • «. 25 bone control system that can be customized and programmed for the machine and application, and. *** control unit compatible with the control system, • ♦ · eg joystick for driver control * * the lifting device. The control system also includes a float; ΐ 30 mode function whereby the power units are released so that the ·· • * ·· levers can float and tilt, ie.

to freely rise and lower in the vertical axis, eg according to the slope of the road surface. The steering system can be set with the steering device in a free snow • 35 *. In this case, the front linkage and the attachment ·: * ·: follow the shape of the terrain itself. As control systems and devices, any system and device known per se 12 117816 may be used and will not be described in further detail herein. '! ..V1

The front lifting device 1 further comprises a hydraulic system connected to the control system (not; FIG. 5) with hydraulic hoses, valves and connections.

. : '. In addition, means are provided in the front lifting device to prevent unwanted lateral and swinging movements.

The structure of the front lifting device according to the invention makes it possible to raise, lower and tilt the implement attached to the front lifting device in a desired manner with respect to the implement. The lifting means allow the arms to be raised and lowered either at different times or at the same time and to the desired height, whereby the arms can be arranged in the desired position. By means of the lifting means and their hydraulic and mechanical controls, the tiller arms can be tilted to the desired position so that either or both of the tiller arms 20 can be lowered or lifted, or ·; one of the upper arms is lowered and the other is raised. The telescopic arms of the tiller arms allow the attachment tool to be rotated in an adjustable plane to the right, left, or left, so that the other telescopic • ·. 25 arms are extended or the other is shortened.

* * ·. ···. The invention is not limited to the above examples, but many modifications are possible while remaining within the scope of the inventive idea set forth in the claims.

·· * · • ♦ · * • · · · · · · · · ····················· ...

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Claims (12)

A forward lifting device, which can be attached to a working machine and comprising a base part (2), which is attached to the working machine, two sliding shafts (3) which are jointly joined with the base part, fastening means (14,15) for attaching the the base part of the working machine, lifting means, which are connected to the base part (2) 10 and connected with the push shaft (3), and at least one adjustable support shaft (7,8), which is joined by a joint between the push shaft (3); and the lifting means comprise two lifting shafts (4), which are connected to the upper end (11) of the base part, and a stiffening beam (30) arranged between the lifting shafts (4); and the front lifting device comprises guiding means for controlling and controlling the push shafts and the lifting means to a desired position, characterized in that the lifting means comprise first adjustable force devices (5) which are adapted between the lifting shaft (4) and the lower end of the base part (12). and jointed with joints with the lifting shaft (4) 'and the base part (2), and other controllable force devices (6), which are adapted between the lifting shafts (4) and' V *: the pushing shaft (3) and joined with the joint with the lifting shaft ; # J *: 25 (4) and the Shooting Shaft (3). 2. Device according to claim 1, characterized in that the lifting means comprise adjustable: ·· * *. ···. Support shafts (8), which are arranged in v-shape and fitted between the base part (2,9,24) and the other end of the push shaft, 30 ends (17) and joined jointly with the base part (2,9,24) φ · * and the push shaft (3). 3. An arrangement according to claim 1 or 2, characterized in that the base part (2) comprises ....: a horizontal beam (9) and vertical beams (10), which are arranged at both ends of the horizontal beam, and the first (14) and second (15) fastening means ...: part with which the base part can be attached to the front part 17. and / or the sides of the working machine, and intermediate beams (13) arranged between the other ends (12) of the vertical beam and the other fastening means (15). Device according to any one of claims 1 to 3, characterized in that the front lift device (1) comprises side supports, which are fixed to the bed side of the working machine base, to which the lateral support the base part (2) of the front lift device can be fixed by means of fastening. (14.15). 5. Device according to claim 4, characterized in that attachment points are provided at the lateral supports, to which the attachment points (14,15) of the base part (2) can be fixed by bolting. Device according to any one of claims 1-. 5, characterized in that the push shaft (3) is! ' connected from its first ends (16) to the base members (13) of the base member and extending at a distance from the front of the working machine. " Device according to any of claims 1 -? 6, characterized in that the second fastening means (15) of the base member are adapted at such an angle that they: together with the intermediate beam (13) of the base member and • · · · · 1 ·,; the push shaft (3) forms a straight line where the base is • ». .1. 25 is attached to the working machine and where the sliding shaft is in its «1 · * 1 ·. ···. working position. Device according to any one of claims 1 to 7, characterized in that telescopic shafts (18) * · * ··· 1 are connected to the other ends (17) of the shaft (3) from their first ends (19) and connecting means (21). ) are provided at the other ends (20) of the telescopic shaft, to which connecting means a desired working means can be attached. Device according to any one of claims 1 - 8, characterized in that the telescopic handle 1 ·· (18) can be controlled mechanically and / or hydraulically. * ·· • · • • • ♦ 18 117816 Device according to any of claims 1 ΐ! 9, characterized in that the lift shaft (4) is from its first ends (22) joined jointly with the first ends (11) of the vertical beams, and the other ends (23) of the lift shaft extend at a distance from the front of the working machine . 11 Device according to any of claims 1 to 10, characterized in that the force devices (5,6) are hydraulic cylinders. Device according to any one of claims 1 to 11, characterized in that the front lifting device (1) comprises a fastening bracket (25), which is placed adjacent to the base part (2) to provide a three-point bracket with the sliding shaft (3). 15 ·· * • · • «··· ··· '. · • ·· • · ♦ ··· * · ·. · · · · · · · · · · · · · · · · · · · · ♦ · · ♦ · · · · · · · ··· ♦ · · • * · ··· ♦. · • · · · * • * ···· • »• ® ·. • «• ·· ···