MXPA99011368A - Accessory for pluggable implement for a ve vehicle - Google Patents

Abstract

The present invention relates to a motor vehicle for industrial and / or agricultural operations comprising: a vehicle frame, a telescopic arm connected to the frame by a pivot joint for a vertical pivoting of the telescopic arm, the telescopic arm has one end free that can be extended, a holding interconnection at the free end of the telescopic arm that includes a support carrying a three-point attachment implement, characterized in that it also comprises a closing arrangement associated with the support and the frame, which transmits loads directly to the vehicle frame when the telescopic arm is in a predetermined operating position

Description

ACCESSORY FOR IMPLEMENT ENCHUFAB E FOR AN ENGINE VEHICLE Background of the Invention The invention relates to a vehicle engine for industrial and / or agricultural applications, in particular for an agricultural tractor, with an attachment interconnection containing a three-point implement hitch at either the front end or the end rear of the vehicle.

Agricultural tractors in particular, but also other utility vehicles used in agricultural or industrial applications, are used primarily as work machines to carry out operations in the field. For this purpose an appropriate implement can be attached to the vehicle. In contrast to single-purpose machines, the tractor is therefore an open system that can be converted into a machine capable of useful operations by being coupled to an implement.

Since a work vehicle must be capable of being coupled to several implements for carrying out several operations, the accessory interconnection between the vehicle of * - -_? - engine and implement have a particular significance. The term accessory interconnection is understood to include all devices that are required in order to attach the implements to the motor vehicle, and if necessary to supply them with propulsive power.

"" A common accessory interconnect, with which most agricultural tractors and similar agricultural motor vehicles are equipped today, contains a three-point implement hitch, as defined, for example, by standards ISO 730 or DIN 9674. Such coupling includes two lifting arms, connected to each other by a lifting shaft, each of which engages an associated hydraulic power lifting cylinder. Each lifting arm is connected through a lifting rod or a lifting spindle with an associated inner steering arm, which carries a lower coupling point. In addition, the three-point implement hitch contains an upper steering arm connected in a joint to the tractor body with a third "upper center" coupling point.

The three-point implement hitch makes it possible to mount the implements to the agricultural tractor using simple means. For this purpose the tractor is driven to the implement previously deposited on the ground. The coupling points are coupled to the corresponding recesses of the implement so that the utility vehicle and the implement form a fully functional processing unit. If necessary, a power take-off shaft of the utility vehicle is connected to the input shaft of the implement. The electrical and hydraulic connections for the transmission of power and signals can be established between the utility vehicle and the implement. By actuating the power lifting cylinders the implement can be raised and its height controlled within certain limits, in order to move between the transport position and the position _T desired operation. In many cases the implement does not require its own frame here.

Despite the multiple applications for the three-point attachment, the spectrum of applications for the motor vehicle is still limited.

The problem underlying the invention is seen as that of developing a motor vehicle of this kind in a manner such that its spectrum of application is extended. In particular, the capacity of the accessory interconnection must be expanded in order to open new areas of application for the motor vehicle.

Synthesis of the Invention The motor vehicle according to the invention for industrial and / or agricultural operations contains an accessory interconnection at the rear of the vehicle in the "front of the vehicle with a three-point implement hitch which is preferably configured according to the ISO 730 or DIN 9674 standard. The three-point implement coupling is carried by a plug-in arm and pivoted vertically connected by a gasket to the vehicle frame, eg, to the body of the vehicle, to a vehicle frame or to the superstructure of the vehicle. A bracket on the free end of the plug-in arm carries the accessory interconnection with the three-point attachment device. Furthermore, a closing arrangement is provided by means of which the support can be selectively immobilized with respect to the vehicle frame when the telescopic or plug-in arm is, for example, in a "lowered and retracted operating position.

As a result of the interconnection of plug-in accessori with a three-point implement hitch, new areas of application have been opened for the motor vehicle, particularly for agricultural tractors. This makes it possible, on the one hand, to perform all the operations that can be achieved with a conventional three-point attachment implement. On the other hand, a large loader height is constantly available at the rear end of the vehicle at the front end of the vehicle. The motor vehicle according to the invention makes it possible to move the implements with enlarged degrees of freedom and a wider range of lifting heights. This can be used, on the other hand, as a conventional tractor with a conventional accessory interconnection, and, on the other hand, as a fully functional load.

A preferred application is seen in the case of a normal (aTrado) operating process that can be carried out that the implement (the plow) can be raised to such a degree that "it can be deposited on a trailer or at a high storage location. without any additional equipment Due to the fast and simple loading, it is possible a quick change between the different operation sites, separated by a distance, in the sense that after an operation application, the implement is loaded on a trailer, the trailer is coupled to the motor vehicle and is brought to a new place of operation at a high vehicle speed, the lifting of the implements is possible up to, for example, the height of the upper edge of the vehicle cabin, so that The implements can be raised to a height that allows the deposit on shelves or trailers if you have to remove them first of the implement hitch of three points.

An additional advantage of the plug-in accessory interconnection lies in the fact that the coupling of attached attachments and, for example, that carried with a ground excavator through horizontal telescopic boom movements can be carried out without any movement of the tractor. .

Preferably the accessorie interconnection contains, in addition to the three-point implement hitch, additional accessory arrangements and / or coupling arrangements that can be "fastened to the support." In this manner the functions of the current point hooks such as the hooks of drag , the drawbars7 the similar drag couplings can be provided.In all incorporations, the tow eyes of an implement that is to be attached can be taken from the ground and brought to the hydraulically operated position.

Preferably, the telescopic arm is fastened at the center with respect to the width of the vehicle, behind the operator's platform, in particular behind the cabin : * - * of the operator and forward of the rear axle, resulting in a telescopic back interconnection. Here, the motor vehicle can be configured to a great advantage as a central seat tractor or a front seat tractor.

According to a preferred embodiment of the fastening attachment interconnection of the present invention the telescopic arm generally contains an outer pivoting component d connected by a joint to the vehicle frame and at least one extehsible insert which is used to control its length. At the free end of the insert, it is fastened to the support which carries a three-point implement hitch According to a particularly simple embodiment of the invention, the plug-in arm contains concentric components which can be inserted into one another. These can be configured as rectangular profiles which offer a high resistance to torsional force and which makes possible a simple design of the sliding guides and support points for lifting arrangements. For certain applications, the use of the plug-in arm with at least three components inserted into one another may be advantageous.

According to the preferred additional developments of the invention, the pivoting and the extension movement of the plug-in arm and, if necessary, the relative movement of the support in relation to the plug-in arm, is carried out by means of cylinder and fluid piston units. présurizado, appropriately by hydraulic cylinders d double action. These can be supplied with hydraulic fluid pressurized by the hydraulic system of the motor vehicle. In particular, for the extension and retraction of the components, at least one extension cylinder can be provided between the pivoting component and an extensible insert or in each case "between the components of the plug-in bracket.Preferably, two hydraulic cylinders which act effectively in parallel they engage, on the one hand, the frame of the vehicle, and, on the other hand, the plug-in arm fi? _ to move the attachment attached in the vertical direction.

In order to bring the support to a desired defined direction or to hold it in a defined position, and advantageous to connect the support by means of a joint to the free end of the telescopic arm, for example, with the free end of an extendable insert. Between the telescopic arm or the superstructure of the vehicle on the one hand and the movable support on the other side, at least one double acting pivot cylinder is arranged, by means of which the support can be pivoted and directed.

. In a number of operations, the implement must be maintained in a desired orientation in relation to the ground even when the telescope arm has moved. For this purpose, it is particularly advantageous if the pivot system is configured in such a way that the coupling plane is held vertically, or in any other desired orientation, regardless of the inclination of the plug-in arm. For this purpose, a further preferred development of the invention provides a level control arrangement that controls at least one pivoting cylinder in such a way that the implement is retained in a desired orientation relative to the ground regardless of the pivoted position of the implement. plug-in arm To determine a present value signal for the level control array, the direction of the desired orientation of the implement can be monitored by an "appropriate sensor with the orientation maintained by the hydraulic control in a known manner.

It is also known that it is advantageous to provide an adapter that can be attached to the three-point implement hitch which is used to accept special implements whose clamping interconnection is not defined by the aforementioned standard for the three-implement hitch. points This combination can replace a conventional front loader. This configuration makes it possible, for example, to perform all the operations that had previously been achieved with "a front loader whenever the front loader implements (earthmovers, loader with fork, etc.) are fastened by means of special adapters to the hitch d implement three points. = __; * ~ Brief Description of the Drawings The drawing shows an embodiment of the invention on the basis of which the invention as well as the additional advantages and additional advantages of the developments of the embodiments of the invention will be explained and described in greater detail in the following: Figure 1 shows a schematic perspective view of a motor vehicle according to the invention with the telescopic back interconnection in the position d operation.

Figure 2 shows a motor vehicle according to Figure 1 with the posterior telescopeating interconnection lowered.

Fig. 3 shows a motor vehicle according to Fig. 1 with the raised telescopic back interconnection.

Figure 4 shows the schematic side view of the rear region of a motor vehicle with the telescopic rear interconnection in the lowered position of telescopic arm, whose support can be pivoted by an internal pivoting cylinder.

Figure 5 shows a side view that corresponds to figure 4 in which the telescopic arm is in its highest position Figure 6 shows a schematic side view of the rear region of a motor vehicle with the telescopic arm in its lowered position, the support of which can be pivoted by an external pivoting cylinder.

Figure 7 shows a side view corresponding to Figure 6 in which the telescopic arm is in its highest position.

Figure 8 shows a schematic side view of the rear region of a motor vehicle with a telescoping rear interconnection illustrating the closing arrangement for the three-point implement hitch.

Figure 9 shows a schematic side view of the rear region of a motor vehicle with a rear telescopic interconnection illustrating an additional coupling arrangement attached to the body of the vehicle.

Figure 10 shows the coupling arrangement d of Figure 9 as seen from the rear.

Figure 11 shows a schematic side view of the rear region of a motor vehicle with a telescopic rear interconnection illustrating another incorporation of the additional coupling arrangement fastened to the three-point attachment fastening tool. 7 Figure 12 shows the coupling arrangement of Figure 11 as viewed from the rear.

Description of the Preferred Incorporation A utility vehicle 10 is shown in Figures 1 to 3 and includes an operator's cab 12. Behind the operator's platform 12 and centered with respect to the transverse extent of the vehicle, a telescope arm 16 is connected in a gasket to the frame of the vehicle 14 and a pivoting component 18 is provided with an extendable insert 20. At the free end of the insert 20 a support 22 is connected to a joint and is attached to a three point attachment implement 24 together with the arrangements of additional fastening, not shown in greater detail in Figures 1 to 3, whose interconnection d fastening preferably corresponds to the standards. Additional fastening arrangements can also be attached directly to the vehicle frame.

The clamping interconnection can be operated in two modes, one mode of operation and one mode of survey.

For the mode of operation, Figure 1 shows the telescoping arm 16 in a retracted and closed position. This position is the transport position as well as the operation position for all operations with the point attachment. The support 22 is rigidly connected and fixed to the frame of the vehicle 14. All the loads are transmitted by the support 22 directly through the closing arrangement as described below to the vehicle frame 14, so that the telescopic arm 16 is discharged. In this position, a power take-off shaft, not shown in Figures 1 to 3, of the utility vehicle can be connected to the input shaft of the implement as well as electrical and / or hydraulic connections can be established for power transmission and of the signs between the utility vehicle and the implement.

The operation mode of dragging is activated after coupling of the implement by acting as closing arrangement. The driving mode corresponds to that of a conventional three-point attachment implement attachment.

The lifting mode is shown in Figures 2 and 3 in which the unfixed support 22 can be pivoted by the lifting cylinders and can be extended by the extension cylinders. Figure 2 shows the telescopic arm 16 in its extended and lowered position, n fixed. This position is appropriate for picking up implements. For example, in this position the tow eye of an implement or trailer can be taken from the ground. Therefore the coupling functions of the "coupling mechanism" can be carried out depending on the configuration, the telescopic arm functions as a rigid drag bar (with a partial extension) and the attachment coupling height can be adjusted through elevation or descent.

Figure 3 shows the telescopic arm in a raised and extended position. "This is the lifting mode for the operation of lifting and loading operations or for picking up and depositing the implements deposited at high elevations. Implement can be loaded and unloaded from trailers.

The details of the posterior telescope interconnection are revealed by figures 4 to 12. The telescopic arm 16 shown in these figures generally consists of two concentric components that can be inserted one with the other with a rectangular profile. A component configured with a pivoting component 18 is connected in a gasket 26, fixed to the frame 14 and connected to the vehicle in such a way that it can be pivoted in a vertical direction. The pivoting s is carried out by two lifting cylinders 28 arranged on both sides of the pivoting component 18 so that in each case they engage with one end of the vehicle frame 14 and with the other end the outer contour of the pivoting component 18.

Within the pivoting component 18 is arranged a "" Component 20 configured as an insert, which can be retracted and extended in an axial direction within the pivoting component 18 by means of an extension cylinder 30. For this purpose an end 31 (FIG. ) of the extension cylinder 30 is fastened to the pivoting component 18 and its other end 3 is "fastened to the insert 20. The extension cylinder 30 can be arranged inside the insert 20 as to save space. It should be understood that the configuration of the telescopic arm in" Instead of the two components, three concentric components can also be used which can preferably be telescopically inserted into each other. - The free end of the insert 20 projecting from the pivoting component 18 carries a component 35 that is angled downwards and can be seen in figure 5 and which is provided with a connecting joint 32. A support 22, free to pivot is attached to the insert 20 through the connection seal 32. A pivoting cylinder 34 is provided in order to pivot the support 22 about the horizontal axis of the connection joint 32.

According to FIGS. 4 and 5, the pivoting cylinder 34 extends generally within the insert 20 and is secured in a seal with its end 37 to the insert 20 and its other end to a connection joint 36 of the support 22. E contrast to this in the embodiment shown in figures 6 7 the pivoting cylinder 34 is arranged outside the insert 2 and above the telescopic arm 16 and engages with its end d the operator platform 12 or the frame 14 and with the other end a connection seal 36a of the support 22a.

* By actuating the pivoting cylinder 34 34a, the support 22 and 22a can be "pivoted in a direction from left to right or from right to left from its fixed operating position shown in figures 4 and 6 around the gasket. 32 horizontal connection.

The support can be fixed with respect to vehicle frame 14, which is explained with reference to Figure 8. The fixing arrangement shown is suitable for all the variations of the embodiment shown in the figures. For the purpose of fixing, two trap hooks 4 can be used which are open upwards and which are rigidly fastened to each of the axle boxes 42 and which are offset to the side of the longitudinal axis of the vehicle. However, with a spring suspension for the axle it is recommended that the trapping hooks 40 be attached to the car frame 14. Two projections 38 are arranged on the support 22 and extend transverse to the longitudinal center line of the vehicle. The projections 38 are adapted to fit in the groove-shaped recesses of entrapment hooks 40 that are open upwards. The projections 38 can be received in the recesses. This can be fixed within the recesses of the trapping hooks 40. The arrangement for this closure is not shown in any additional detail. The appropriate closing mechanisms for example, they can be of the type as they are usual for quick coupling of the lower steering arms. The fixing arrangement between the support 22 and the vehicle frame 14 can alternatively be carried out by the use of a lock or "the arrangement of the holes and bolts with corresponding head.

The fixing of the support 22 to the vehicle frame 14 * can provide assurance that during transport operations or operations with an implement, support 22 and with it the clamping interconnection is immobilized with respect to the vehicle frame and does not move relative to it. This is particularly advantageous during the operations that use the PTO shaft.

When clamping, the forces generated in the support 2 are transmitted directly to the rear axle or to the vehicle frame 14 without affecting the telescopic arm 16. Therefore the drag loads are allowed directly to the vehicle frame, in particular during the towing operations transport, so that the telescopic arm is not loaded during these types of operations and therefore can be designed for relatively light loads.

The support 22 carries a three-point hitch with an upper steering arm 44 and two lower steering arms 46 on the sides, each of which is connected in joints to the support 22 in the usual manner, free to pivot. lower direction 46 can be lifted down by the associated lifting arms 48 and the lifting struts 50 connected in the joints to the support 22. The actuation of the lifting arms is carried out in the usual way by the lifting cylinders of potenti 52, one end 53 (Figure 4) of each of which is connected in a joint to the support 22 and whose other end is connected to a joint 54 of the associated Lifting Arm 48.

The transverse movement of the lower steering arms 46 can be limited by the usual stabilizing steering arms 47 (figures 4 and 8). The The free ends of the lower steering arms 46 can be connected to the free end of the upper steering arm 44 by an implement pole 56 which is merely indicated (FIG. 4).

In addition, a power take-off shaft 60 (FIGS. 5 and 7) is projected from a power take-off shaft gearbox 62 (FIG. 5). The enclosure of the power take-off shaft gearbox 62 is formed on a vehicle gearbox enclosure, not shown in any detail here.The power take-off shaft 60 is covered by a tom-axis protective shield of "usual force 64.

The lifting cylinders 28, the extension cylinder 30 and the pivoting cylinder 34 can be configured as double acting hydraulic cylinders. The hydraulic supply is provided by the vehicle hydraulic system on the board. "The operation of the hydraulic cylinders is carried out by control devices arranged in the cab of the vehicle, through which the hydraulic valves can be operated, in order to control the flow of hydraulic oil in a corresponding manner. of power lifting 5 are driven or controlled in the usual manner A level control arrangement, known per se and not shown in any further detail here is used to control the pivoting cylinder 34 and the vertical direction of the support 22 in a desired desperation position.

Figures 9 and 10 reveal a fastening arrangement 70 which is fastened to the shaft gearbox enclosure of power take-off 62. This is a conventional accessory arrangement that can be varied in height with two guide rails 72 in the body. Guiding side to an accessory coupling 74. The coupling - Accessory can be adjusted in height and can be fixed in several height positions. The fastening of the attachment arrangement 70 to the enclosure of the stationary power take-off shaft gearbox 62 has the advantage that the telescopic design of the rear interconnection is not loaded by the coupling of the implements.

Figures 11 and 12 reveal an alternate configuration for a fastening arrangement 76. Here the accessory coupling 78 is attached to the "three point attachment bracket 22. This embodiment is simpler in design than the configuration shown in FIGS. Figures 9 and 10, since the guide rods 72 can be omitted.The height adjustment is carried out by the telescopic arm.

- The invention should not be limited to the additions described above but should be limited only to the clauses that follow.

Claims (11)

R E I V I N D I C A C I O N S

1. A motor vehicle for industrial and / or agricultural operation comprising: a vehicle frame; a telescopic arm connected to the frame by means of a pivot joint for a vertical pivoting of the telescopic arm, the telescopic arm has a free end which can be extended; an accessory interconnection at the free end of the telescopic arm including a support carrying a three-point attachment implement; Y a locking arrangement for immobilizing the support with respect to the vehicle frame when the telescope arm is in a predetermined operating position.

2. The motor vehicle, as claimed in clause 1, characterized in that it comprises a second accessory arrangement.

3. The motor vehicle, as claimed in clause 1, characterized in that the telescope arm is connected to the frame along a longitudinal center behind the operator's platform and in front of a rear ej of the motor vehicle.

~ 4. The motor vehicle, as claimed in clause 1, characterized in that the telescope arm contains a pivoting component that is connected by a joint to the vehicle frame, free to pivot, and contains at least one insert extensible.

~ 5. The motor vehicle, as claimed in clause 1, characterized in that the telescopic arm is provided with two components which are concentric, one can slide within the other.

6. The motor vehicle, as claimed in clause 1, characterized in that the telescope arm has at least three concentric components that can be slid one inside the other.

7. The motor vehicle, as claimed in clause 4, characterized in that it comprises at least one extension cylinder between the pivoting component and the extendable insert configured as a pressurized fluid piston cylinder unit for the extension and retraction of the Insert

8. The motor vehicle, as claimed in clause 1, characterized in that it comprises at least one lifter cylinder which is configured as a pressurized fluid piston and a cylinder unit and which is provided between the vehicle frame and the telescopic arm for the vertical pivot of the telescopic arm.

9. The motor vehicle, as claimed in clause 1, characterized in that the support which is connected in a joint with the free end of the telescopic arm and between the telescopic arm or superstructure of the vehicle on the one hand and the support by the On the other side, at least one pivoting cylinder configured as a pressurized fluid cylinder and piston unit for pivoting the support in the vertical direction is provided.

10. The motor vehicle, as claimed in clause 9, characterized in that it comprises a level control arrangement that interacts with at least one pivoting cylinder d in order to retain the support in a desired orientation and relation to the ground regardless of the pivoted position of the telescopic arm.

11. The motor vehicle, as claimed in clause 1, further characterized in that it comprises an adapter that can be attached to the three-point implement hitch and used to hold the special implements whose accessory interconnection is not mounted to a hitch. implement three points. SUMMARY A motor vehicle for industrial and / or agricultural operations, in particular an agricultural tractor, is described as an accessory interconnection containing a three-point implement hitch. In order to broaden the spectrum of vehicle applications and the capacity of the interconnection and in order to open new areas of application for the motor vehicle, a telescopic arm that can be pivoted in the vertical direction is connected in a joint to the frame. of vehicle. A bracket is arranged at the free and extended end of the telescopic arm and carries the interconnection for the attachment of the three-point attachment. A closure arrangement is provided by means of which the support can be immobilized with respect to the vehicle frame when the telescopic arm is in an operating position.