AT510764A1 - HYDRAULIC ROTARY DRIVE - Google Patents

Abstract

A hydraulic rotary drive (1) for rotating a load receiving means (104) relative to a crane arm (102), comprising - a shaft (10) having first attachment means (11) for connecting the shaft (10) to the load receiving means (104 ) or the crane arm (102), - a shaft bearing (20) having second fastening means (21), for connecting the shaft bearing (20) with the crane arm (102) or the load receiving means (104), in the shaft (10) arranged Wing (12), which are acted upon for transmitting a torque to the shaft (10) via an oil feed and an oil discharge with oil, - a Gleitkontaktiervorrichtung (2) which is electrically contacted with a power supply (3) and a current drain (4) , wherein in the shaft (10) and / or in the shaft bearing (20) has a recess (5) is provided, in which the Gleitkontaktiervorrichtung (2) is at least partially received.

Description

02/12/2010 17:24 + 43-512-583408 S.

TORGGLER S HOFINGER

1 06/23

The invention relates to a hydraulic rotary drive for rotating a load-receiving means relative to a crane arm, according to the preamble of claim 1.

Furthermore, the invention relates to a crane with a erfindungeg emflßen rotary drive and a harvester with a crane with a rotary drive according to the invention.

Generic rotational drives, such as with an attached gripper as a load-handling device, find application in numerous fields. Often it is the moving load to bulky items such as logs or pipes or the like. Particularly preferred are such rotary drives in cranes used, which are mounted on vehicles such as HoizvoUerntem, taken from English also called Harvester. Likewise, such rotary drives are also used stationary, such as in waste incineration plants or in the construction industry. The hydraulic rotary drive is operated via a hydraulic device, which usually leads from a crane arm to the rotary drive.

For example, EP 1 889 808 B1 of February 20, 2008 shows a crane arm with a fixture for implements, the fixture along a vertical axis spaced pivot joints autoeist with a kranarmaertigen swivel and a work equipment side swivel, from the crane arm hose lines to terminals in a between Work implement and implement-side rotary joint arranged hydraulic rotary drive lead. This rotary drive is limited in its applicability to such load-carrying devices that are not dependent on an electrical supply.

The object of the invention is to provide an improved hydraulic rotary drive for rotating a load-bearing device relative to a crane arm, which is characterized by a broader usability.

This is solved by the features of claim 1.

This means that in the wells and / or in the Weflenlager a recess is provided, in which the Gleitkorrtaktiervorrichtung is at least partially included. By means of the hydraulic rotary drive according to the invention, it is also possible to use those load-carrying devices which require an electrical supply. 68860-23 / fr 02/12/2010 17:24 + 43-512-583408 TÜRGQLER & HOFINGER 07/23 p. · ·· «··» * * ♦ 9 9 • 99 9 • 999 ► · · 999 99 9 9 2

The Gleitkontaktiervorricbtung is at least partially not located outside the shaft or the shaft bearing and thereby contributes to smaller dimensions of the hydraulic rotary drive, resulting in a more compact design of a hydraulic rotary drive.

It is also achieved that the Gleitkontaktlervorrichtung is protected against external forces, since the shaft or the shaft bearing, the Gleitkontaktiervorrichtung protectively surrounds.

Further advantageous embodiments are defined in the dependent claims

It has turned out to be particularly advantageous if the glacier contacting device is essentially received in the recess in a void manner. The complete introduction of the Gieitkontaktiervorrichtung in the recess of the shaft or the Weüenlagers an even more compact design for a hydraulic rotary drive can be achieved.

According to a preferred embodiment it can be provided that the power supply to Gieitkontaktiervorrichtung substantially exial in the shaft and / or runs substantially radially in the shaft bearing or vice versa Thereby, a particularly protected installation of the power supply can be achieved.

Furthermore, it can preferably be provided that a protective housing for the - preferably axial - power supply and / or the current discharge is provided. Due to the design of a protective housing damage to the power supply during operation can be prevented.

It has proved to be particularly advantageous if the shaft projects beyond the movable bearing at an end of the rotary drive facing the load receiving means. This makes it possible on the one hand, the load-receiving means in a simple manner to one of the fastening ungsmittei can be attached and on the other hand, that the current discharge from the GIsKkontaktiervorrichtung can be made directly through the shaft.

It may be particularly preferred that the current discharge from the Gieitkontaktiervorrichtung at the load receiving means end of the 02/12/2010 17:24 + 43-512-583408 TORQQLER & HOFINGER 08/23 p. * · «M»

• * * * I

• ·· I «« · · · · 9 • * · · • ·· «♦« »· 3

Rotary actuators is formed and leads away laterally from the rotary drive. Due to the lateral routing of the current discharge, this can take place independently of a load-securing device fastened to the first fastening means.

It has proved to be particularly advantageous if the lateral current discharge from the sliding contact [device essentially leads away radially or runs obliquely in the direction of the end of the rotary drive facing the load receiving means.

According to a preferred embodiment it can be provided that the Gleitkontaktiervorrichtung is formed on the load receiving means facing the end of the shaft. This can be achieved that the Gleitkontaktiervorrichtung - such as for maintenance purposes - is easily accessible.

It has also proven to be advantageous if the shaft is designed as a rotor and the shaft bearing as a stator.

It has proven to be advantageous if the Gleitkontaktiervorrichtung at least one - preferably four - slip ring (s) and at least one - preferably four-sliding contacts). The formation of a Gleitkontaktiervorrichtung with slip ring and sliding contacts iat particularly stable and easy to produce.

Preferably, it may further be provided that the - preferably the four - Schlelfring (e) is attached to a bearing of the protective housing (are) and that - preferably the four - sliding contacts) is attached to the shaft (are). The arrangement of the slip rings on the stationary part of the rotary drive and on the other hand by the arrangement of the sliding contact on the rotating part of the rotary drives less moving masses can be achieved.

According to a possible embodiment it can be provided that a connection of the current discharge to the Gleitkontaktiervorrichtung is provided, wherein the connection of the current discharge in the recess auegebildet is. Due to the direct connection of the current discharge to the recess located in Gleitkontaktiervorrichtung also less moving masses can be achieved because you can do without a plug or the like on the moving part of the rotary drives *. 02/1 ^ / 2010 17:24 + 43-512-583408 TORGGLER & HOFINGER 09/23 p. • • a 9 • «» 99 · · * 9 9 • • • • ··· 9 9 9 9 9 999 9999 99 4

Protection is also desired for a crane having a hydraulic rotary drive for rotating a load-carrying means relative to a crane arm, wherein a crane arm is connected to the second fastening means of the hydraulic rotary drive.

Specifically, protection is desired for a harvester with a crane according to claim 13.

Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawing, in which:

Fig. 1 is a side view of a harvester

Fig. 2 is a perspective view of a hydraulic rotary drive on a crane arm

Fig. 3 is a perspective view of a hydraulic rotary actuator

Fig. 4 is a section through a front view of a hydraulic

rotary drive

5 is a bottom view of the rotary drive of FIG .. 4

Fig. 6 is a section through a front view of another

Ausführungsbeispreles a hydraulic rotary drive.

Figure 1 shows the side view of a harvester 100 also known as Holzvollemter. This harvester 100 has a crane 101. The crane 101, in turn, has a crane arm 102 to which the load receiving means 104, in this embodiment a woodworking implement for cutting and trimming trees, is attached via a swivel assembly 103. Between the rotary joint arrangement 103 and the load receiving means 104 of the hydraulic rotary drive 1 for rotating the load receiving means 104 is arranged relative to the crane arm 102

FIG. 2 shows a crane arm 102 on which a rotary joint arrangement 103 is arranged. About dis second attachment means 21 of the hydraulic rotary drive 1, this rotary drive 1 is connected to the crane arm 102. Here, the second attachment means 21 are formed as spaced-apart, double tabs between which each one arranged on the crane arm 102 counterpart can be felt and rotatably connected by a bolt. As a result, the hinge assembly 103 is formed. In the illustrated embodiment, the hinge 103 is formed as a split pivot 103, so that there is a clearance between the tabs TQRGGLER & > > > Of course HOFINGER 10/23 S. 5 does not have to be this way. Also conceivable would be, for example, a continuous bolt.

The hydraulic rotary drive 1 has a shaft bearing 20. in the interior of which a shaft 10 is formed. Oie shaft 10 has first attachment means 11, the upper, the load-receiving means 104, not shown, can be attached to the shaft 10.

In the interior of the shaft 10, the recess 5 not shown here and the GMt contacting device 2 arranged therein are formed in this preferred exemplary embodiment (see FIG. 4 and FIG. 5).

To the not visible here Gleitkontaktiervorrichtung 2 leads on the one hand, the power supply 3 and on the other hand, the current discharge 4 (see figure description of Figure 4).

Figure 3 shows a perspective view of a hydraulic rotary drive 1, as just described in Figure 2. From this view, it is further clear that the hydraulic connections 51 and 52 are arranged on the shaft 10 for the supply of the load-receiving means 104, not shown. Otherwise, the above-mentioned under Figure 2 with respect to the rotary drive 1 applies.

FIG. 4 shows a hydraulic rotary drive 1 for raking a load-bearing means 104 (not illustrated here) (see FIG. 1) relative to a crane arm 102 (see FIG. 2), not shown here, with a shaft 10 and a shaft bearing 20, first fastening means 11 on which the load-carrying means 104 facing end 7 of the shaft 10 for connecting the shaft 10 to the load receiving means 104, and second fastening means 21, which are formed on the shaft bearing 20, for connecting the world bearing 20 with the crane arm 102. In the shaft 10 wings 12 are arranged to the Transmission of torque to the shaft 10 via an oil supply and oil removal can be acted upon with Ol, as is well known in the art. The Gleitkontaktiervorrichtung 2 is electrically contacted with a power supply 3 and a current drain 4, wherein in this preferred embodiment, the Gleitkontaktiervorrichtung 2 in the recess 5 of the shaft 10 is substantially completely absorbed. i 02/12/2010 17:24 + 43-512-503400 · ♦

TQR6GLER & HOFINGER # ♦ ·· «SS« ♦ ♦ · ♦ • e «e • ♦ e • • · eee ·· e · p. 11/23 6

The recess 5 is completely encased in this preferred embodiment of the shaft 10 and thus the Gleftkontaktlervorrlchtung 2 is completely encased by the shaft 10

For maintenance purposes, the GtoJtkontakttervorrichtung 2 is freely accessible from below, as well as it is of course conceivable that you can attach a cover here to close the recess 5 also down.

The power supply 3 extends in this preferred embodiment, first substantially radially to the shaft bearing 20 and then substantially axially in the shaft 10 to Gleitkontaktiervorrichturg 2. Preferred catfish is a protective housing 6 for the axial power supply 3 is provided. Likewise, of course, a corresponding protective housing for the radial Stramzufühnjng possible, but not considered in this embodiment.

The shaft 10 is in this preferred embodiment of the load receiving means 104 facing the end 7 of the rotary drive 1 above the shaft bearing 20 also. It can thereby be achieved that the first fastening means 11 are easily accessible in order to establish a connection of the load receiving means 104 and the shaft 10.

The current discharge 4 from the Gleitkontaktiervorrlchtung is formed in this preferred embodiment of the load receiving means 104 facing the end 7 of the rotary drive 1 and leads of this rotary drive 1 side 8 away. Here, the lateral path guide 8 of the current outlet 4 here at an angle of 30 to 60 ° to the longitudinal axis L of the shaft 10. In this embodiment, the Gteftkontakttervorrichtung 2 is formed on the load receiving means 104 facing the end 7 of the worlds 10, it is also conceivable - as shown in Figure 6 shows - that the Gleitkontaktiervorrlchtung 2 is formed in the world bearing 20 or on the crane arm 102 facing the end However, in practice, it has been found that the preferred construction is such that the Gleltkontaktiervorrichtung 2 is placed at the lower end of the shaft 10 in the recess 5. In the outer eyelet shown in this FIG. 4 as well as in the exemplary embodiment shown in FIG. 6, the gating contact 2 has four slip rings 31 and 32, and likewise sliding contacts 41 and 42 corresponding thereto. 02/12/2010 17:24 + 43- 512-583400 TORGGLER & HOFINGER 12/23 5. * ·

• ** · «« · # · I ·· ** · * «························································································ Slip rings 31 and 32 attached to a bearing d of the protective housing 6 and thus do not rotate with the shaft 10 with, the sliding contacts 41 and 42 are secured to the shaft 10 and thus rotate with this eiche. Of course, this could also be done the other way around.

The terminal 43 of the current dissipation 4 takes place here in the interior of the recess 5 of the shaft 10 and not upper a connector outside the shaft 10th

Particularly preferred is the hydraulic rotary drive 1 shown here in a wood harvesting 100 - as shown in Figure 1 used. In this case, the hydraulic rotary drive 1 is arranged on a crane 101 for rotating the load-receiving means 104 relative to the crane arm 102, wherein the crane arm 102 is connected via the second fastening means 21 (FIG. 2) to the hydraulic rotary drive 1.

Figure 5 shows the bottom view of the hydraulic rotary drive 1, as just in the illustrated in Figure 4 embodiment.

From this view, it can be clearly seen that the Oleitkontaktiervorrichtung 2 is surrounded by the shaft 10 of the rotary drive 1 around. In this case, the Gleitkontaktiervorrichtung 2 and all its components, such as the slip rings 31 and 32 and the sliding contacts 41 and 42 disposed in the recess 5 of the shaft 10 and are enclosed by the shaft 10 and protrude preferably not on the lower end. 7 (see Figure 4) of the shaft 10 and the Rotationsantrlebs 1 addition.

FIG. 6 shows an alternative variant for a hydraulic rotary drive 1 for rotating a load-bearing means 104 (not illustrated here) relative to a crane arm 102, not illustrated here, as just explained in FIGS. 4 and 5. Although clearly visible in this sectional view, the sliding contacting device 2 is likewise formed in a recess 5 of the rotary drive 1, however, this recess 5 is not arranged in the shaft 10 in this variant, but in the shaft bearing 20.

Thus, the Gleitkontaktiervorrichtung 2 is not accessible from the load side medium, but from the crane arm side. 02/12/2010 17:24 + 43-512-583408 TORGGLER & HOFINGER 13/23 p.

• * · · • ···· ·· I 8

Ourch this arrangement results in that the power supply 3 to the Gteitkontakltervorrichtung 2 takes place radially, the current discharge 4, however, takes place in this Ausfeihrungsbeispfel first axially protected by a protective housing 6 and then - as in the Ausführungsbeispie! in Figures 4 and 5 dargestettt - laterally 8 away from the width 10 away. Of course, it would also be conceivable that the current discharge 4 is not laterally 8, but at the lower end 7 of the shaft 10.

Otherwise, the same applies to this exemplary embodiment-as shown in FIG. 6 -in the sense of the embodiment mentioned in FIG.

Unlike shown in Figure 6, the Gleitkontaktiervorrichtung 2 can be arranged even closer to the crane arm end of the rotary drive 1, for example, between the tabs of the split formed pivot 103 (see also the description of Figure 2).

Innsbruck, on the 2nd of December 2010

Claims (14)

02/12/2010 17:24 + 43-512-5Θ3408 TORGGLER & 1. Hydraulic rotary drive (1) for rotating a load-bearing means (104) relative to a crane station (102), with - a while (10), HOFINGER 14/23 p. which comprises first fastening means (11) for connecting the shaft (10) to the load receiving means (104) or the crane arm (102), - a rolling bearing (20) having second fastening means (21) for connecting the rolling bearing (20) with the crane arm (102) or the Lastaufnahmemittei (104), - in the shaft (10) arranged wings (12), which are acted upon to transmit a torque to the shaft (10) via an oil feed and an oil removal with Ol, - one Giteitkontaküervorrichtung (2) which is electrically contacted with a power supply (3) and a current discharge (4), characterized in that in the shaft (10) and / or in the shaft bearing (20) has a recess (6) is provided, in which the Gleftkontaktiervorrichtung (2) at least tei has been recorded 2. Rotary drive according to claim 1, characterized in that the Gleitkontaktiervorrichtung (2) is substantially completely received in the recess (5). 3. Rotary drive according to claim 1 or 2, characterized in that the power supply (3) for Giertkontaktiervorrichtung (2) substantially axially in the WeHe (10) and / or Hn Welleniager (20) extends substantially radially or vice versa. 4. Rotary drive according to one of claims 1 to 3, characterized in that a protective housing (6) for - preferably axial - StromzufOhrung (3) and / or the current discharge (4) is provided, 5. Rotary drive according to one of claims 1 to 4, characterized in that the welie (10) on a load receiving means (104) facing the end (7) of the rotary drive (1) on the Weilenlager (20) protrudes. 68860-23 / eh 02/12/2010 17:24 + 43-512-583408 TGRGGLER & HOFINGER 15/23 p. • ··· * ·· «· · ··· * · · > ··· * · · · * · t t * * 9 Ϊ · · · · · ··· ···· ··· M | 2 6. Rotary drive according to one of claims 1 to 5, characterized in that the current discharge (4) of the Qleitkontaktiervorrichtung (2) on the load receiving means (104) facing the end of the rotary drive (1) is formed and preferably from the rotary drive (1) laterally (8) leads away. 7. rotary drive according to claim 6, characterized in that the lateral (8) StromabfOhrung (4) of the Gleitkontaktiervorrichtung (2) leads away substantially radially or obliquely in the direction of the load receiving means (104) facing the end of the rotary drive (1) 8. Rotary drive according to one of claims 1 to 7, characterized in that the Gleükontaktiervorrichtung (2) on the Lastaufnahmemiltei (104) facing the end (7) of the shaft (10) is formed. 9. Rotary drive according to one of claims 1 to 8, dedurch in that the shaft (10) is designed as a rotor and the Welenlager (20) as a stator. 10. Rotary drive according to one of claims 1 to 9, characterized in that the Gleitkontaktiervorrichtung (2) at least one - preferably four -Schlelfring (s) (31, 32) and at least one - preferably four -Schleifkontakt (s) (41, 42 ) having. 11. Rotary drive according to claim 10, characterized in that the - preferably the four - slip ring (s) (31, 32) on a bearing (9) of the protective housing (6) is fixed (are) and that - preferably the four - Sliding contact (s) (41, 42) on the shaft (10) is attached (slnd). 12. Rotary drive according to one of claims 1 to 11, characterized in that a connection (43) of the current outlet (4) to the Qleitkontaktiervorrichtung (2) is provided, wherein the connection (43) of the current discharge (4) formed in the recess (5) is. Crane (101) having a hydraulic rotary drive (1) for rotating a load receiving handle (104) relative to a crane arm (102) according to any one of claims 1 to 12, wherein the crane arm (102) is connected to the second hydraulic fastener (21) Rotary drive (1) is connected. 02 / Ί 2/2010 17:24 + 43-512-583408 p. 16/23 TGRGGLER & HOFINGER •··················································································································································································· 14. Harvester (100) with a crane (101) according to claim 13, Innsbruck, on 02 December 2010