EP2964853B1 - Working device with stationary mast and rotary head - Google Patents

Description

The invention relates to a working device with a preferably designed as a stationary support column frame, with a motor-driven rotary head, which is rotatably mounted on a frame-fixed bearing block about a vertical axis of rotation, with an arm package consisting of several, at kink or push joints in pairs relative to each other, a concrete conveyor line carrying mast arms, which arm package is hinged with its first mast arm about a horizontal axis of rotation on the turret, with an optionally via control elements or a radio link operable arranged in a cabinet control mechanism and an oil tank and a motor-driven hydraulic pump having hydraulic assembly for controlling drive units for the turret and Mastarmbewegung, and with a fixedly mounted in the vicinity of the bearing block work platform, whereby the control cabinet with control mechanism and the hydraulic assembly with oil tank un d hydraulic pump are arranged on the rotary head above the bearing block, wherein the rotary head has a bearing block arranged on the base portion and a bearing point for the arm package comprehensive adapter piece, the base portion of the rotary head carries the adapter piece, and wherein the base portion and the adapter piece detachable at a separation point with each other are coupled.

From the CN 202 248 914 U is such a working device known. This implement has a turret with an adapter piece detachable at a base portion at a separation point. However, the adapter piece here is not part of an arm package but carries a working platform.

The WO 86/00279 A1 describes an implement with a turret having a base portion for receiving an adapter piece on a boom Has. The boom can be moved with a cylinder-piston unit about a horizontal pivot axis. The cylinder-piston unit is connected on the turret side to the turret and on the cantilever side to the adapter piece.

The document JP 2008-202232 discloses a common releasable coupling of a mast arm with a turret via an adapter piece.

Trained as concrete pumps working equipment of this type have a distribution boom as a boom, which carries a concrete delivery line, which is connected to the pressure port of a frame fixedly arranged core pump. The drive mechanism for the rotary head usually has a rigidly connected to the bearing block drive pinion. During assembly, the bearing block is first introduced with its drive pinion in the frame-fixed drive mechanism and then bolted to the frame. A lot of care is required so that the teeth of the drive pinion are not damaged. Therefore, the assembly is usually made at the factory. On the other hand, many construction sites can not be operated with concrete pumps due to lack of space. There are stationary racks required on the designed as an arm package boom is placed.

The EP-1 235 965 B1 describes a Arbeitsberät with a rotary head, in which the components belonging to the drive mechanism of the rotary head components are integrated into the frame-fixed bearing block. This is achieved in that a drive pinion arranged fixed to the frame carries a protruding over the frame coaxial pin and at least one eccentrically arranged Drehitnehmerelement, while the turret has a complementary to the mating pin, releasably attachable to this receptacle and at least one releasably engageable with the Drehitnehmerelement entrainment. The separation point between the frame and the boom is there so between the bearing block and the turret, so that the fairly heavy turret with drive assembly is part of the boom, which must be removed during the change process from the frame. A major disadvantage of this design is also that the working platform through the The supporting column attached parts is concentrated and therefore there is no sufficient space for the mechanic to move. In addition, the arm package must be positioned relatively far away from the support column, so that collisions with attachments to the support column are avoided. This leads to a large load torque. In addition, the necessary for hydraulic control of the arm package hose package is relatively large and bulky and further limits the movement space of the fitter at the relevant point. In emergency operation, in which the fitter is working on the work platform, there is a considerable risk of injury when the turret is erroneously controlled with the arm package. Depending on the position of the mast, the view of the fitter to the arm package is obstructed in emergency mode. Due to the rather large height of the bearing block due to the built-in parts, safe mounting from the work platform is not always guaranteed.

Proceeding from this, the present invention seeks to improve the known working device to the effect that the height of the bearing block is kept relatively small, the necessary for the operation of the arm package attachments in emergency operation do not disturb the fitter and the arm package is easily separable from the frame ,

To solve this problem, the feature combination specified in claim 1 is proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims. The solution according to the invention is essentially seen in the fact that holes formed in the adapter piece form the bearing point for the arm package and a turret-side articulation point for an arm package pivoting relative to the turret cylinder-piston unit, the adapter piece having coupling elements designed as bolt-shaped or peg-shaped coupling elements, while the base section is provided with upwardly open-edge recordings for the suspension elements. Preferably, the hydraulic pump of the hydraulic assembly is suitably driven by an electric motor, which is also arranged on the turret. In this way, the freedom of movement of the mechanic on the work platform in maintenance and emergency operation is significantly improved. A further improvement in this regard is achieved when the necessary for the turret drive drive motor and the associated slewing gear are also located on the turret above the bearing block. Since the hydraulic control is arranged in the turret area, only short, permanently piped lines are necessary between the control device and the coupling point. The work platform, which is free of add-on parts, allows the mechanic to ride with him without a problem and provides a good view of the arm package. The guided via the stationary support column power connections and remote control lines are guided inside to the bearing block, to which coupling points, such as sockets and quick-release fasteners are attached, which keep the working platform. By eliminating the annoying attachments, the arm package can be placed close to the turret, whereby the load torque generated thereby can be reduced. By laying all attachments up in the turret, the bearing block can be made low, so that it does not interfere with the freedom of movement in the working platform. An advantageous embodiment of the invention provides that the control mechanism via an external power source and a guided over the support column and the rotary connection between bearing block and turret bridging electric cable is supplied with electric power. A further preferred embodiment of the invention provides that the oil tank on has the geometrically adapted contour of the turret, in which a window opening with an inner contour forming the passage of a ballast arm mounted on the turret remains free.

The control cabinet for receiving the control mechanism can be arranged on a near-platform holder so that it is easily reached by the fitter. Advantageously, a relative to the arranged on the oil tank window opening about an axis parallel to the axis of rotation of the rotary axis holder for receiving the cabinet is provided, which pivots into the window opening with no ballast boom or parallel to an existing ballast boom can be swung out of this.

The invention provides that the turret has a base section arranged on the bearing block and an adapter piece comprising a bearing point for the arm package, the base section and the adapter piece being releasably coupled to one another via a separation point. It is particularly advantageous in this case if the base section and the adapter piece have coupling elements that can be connected in pairs in a form-fitting manner at their point of separation. Thus it is possible that the boom can be separated together with the adapter piece in the region of the separation point of the base portion of the turret, while the base part remains together with the bearing block on the frame.

According to an advantageous embodiment of the invention, the ballast boom is detachably coupled via a further adapter piece at one of the separation point of the arm package opposite second separation point with the base portion of the turret by means of pairwise positively connectable with each other further coupling elements. In order to bring the ballast boom to the separation point, the arranged on the oil tank window opening must be free by swinging out of the cabinet located on the holder.

Fig. 1

ein als Betonverteilermast ausgebildetes Arbeitsgerät mit Tragsäule, Armpaket und Ballastträger in einer ausschnittsweisen Explosionsdarstellung;

Fig. 2a,

b und c einen Ausschnitt aus dem Arbeitsgerät in schaubildlicher Darstellung und zwei Seitenansichten mit drehkopfseitigen Anbauteilen;

Fig. 3a

bis d vier verschiedene schaubildliche Darstellungen des auf den Lagerbock montierten Drehkopfs mit Anbauteilen;

Fig. 4

eine schaubildliche Darstellung des Drehkopfs mit Lagerbock, Armpaket und Ballastausleger.

In the following the invention will be explained in more detail with reference to an embodiment shown schematically in the drawing. Show it

Fig. 1

a trained as a concrete distribution boom implement with support column, arm package and ballast carrier in a fragmentary exploded view;

Fig. 2a,

b and c a section of the implement in perspective view and two side views with turret side attachments;

Fig. 3a

to d four different perspective views of the mounted on the bearing block turret with attachments;

Fig. 4

a perspective view of the turret with bearing block, arm package and ballast boom.

The implement shown in the drawing is designed as a concrete pump with a stationary frame 10. The frame 10 forms a supporting column which has at its upper end a substructure 14 with a bearing block 35 for a rotatable about a vertical axis of rotation 30 rotary head 32. On the turret 32 each one designed as arm package 34 and ballast carrier 134, pointing to opposite sides of the support column boom 16,116 is arranged. The arm package 34 has a pair of mutually pivotable, a concrete conveyor line 22 supporting mast arms 1,2,3,4. As in particular from Fig. 1 and 4 can be seen, the boom 16 is pivotally mounted to the first mast arm 1 of the arm assembly 34 in the assembled state at a bearing point 36 of the turret 32 about a horizontal pivot axis. In order to pivot the boom 16 relative to the rotary head 32, also designed as a double-acting hydraulic cylinder hydraulic cylinder-piston unit 40 is provided with its cylinder-fixed end 42 and its piston rod fixed end 44 is articulated to a respective spaced from the bearing point 36 boom-side pivot point 46 and turret-side pivot point 48 with a horizontal hinge axis.

The trained as arm package 34 a concrete boom boom 16 is releasably coupled via an adapter piece 52 at a separation point 54 with the base portion 50 of the turret 32 by means of pairwise positively connectable coupling elements. For this purpose, the adapter piece 52 as a bolt-shaped or peg-shaped suspension elements 56,57 trained coupling elements, while the base portion 50 is provided with upwardly open-edge receptacles 58,59 for the suspension elements 56,57. In the Fig. 1 recognizable holes in the adapter piece 52 form the bearing 36 for the boom 16 and the turret side pivot point 48 for the cylinder-piston unit 40th

The transport of the boom 16 to the frame 10 by means of a crane, which is fixed on a crane harness 74 on the boom 16 in its center of gravity position 82. How out Fig. 4 can be seen, in the region of the separation point 54 additionally provided a safety connection, which is made by means of a plug or locking pin 76 between the adapter piece 52 and the base portion 50. The plug-in or indexing pin 76 can be retrofitted by a bottomed working platform 78 (FIG. Fig. 1 ) be installed by a fitter.

Out Fig. 1 and 4 It can be seen that the rotary head 32, in addition to the bearing block 35 arranged on the base portion 50 has a second, a bearing 136 for an additional boom 116 comprehensive adapter piece 152. The ballast support 134 having additional arm 116 is detachably coupled via the adapter piece 152 at the separation point 154 with the base portion 50 of the turret 32 by means of pairwise positively connectable coupling elements. Here is a first group of coupling elements formed as a peg-shaped Einhängeorgane 156 and a second group of coupling elements as provided with an open-edge receptacle 158 for the Einhängeorgane 156 hook members 157. The suspension members 156 are arranged on the base portion 50, while the hook members 157 are arranged with downwardly open-edge receptacle 158 on the adapter piece 152. The adapter piece 152 has a mounted in the state below the open-edged receptacle 158, under the action of the boom 116 about the axis of the Einhängeorgane 156 generated load moment against the base portion 50 adjacent stop 120. The adapter piece 152 is connected in the embodiment shown at two bearing points 136,137 with the boom 116, wherein the bearing points 136,137, especially in the vertical direction at a distance from each other. Similarly to the boom 16, the boom 116 can also be mounted to the base section 50 by means of a crane.

• Eine Hydraulikbaugruppe 84 zur Ansteuerung von Antriebsaggregaten für die Drehkopf- und Mastarmbewegung, die einen Öltank 86 und eine mittels eines Elektromotors 87 angetriebene Hydraulikpumpe 88 aufweist,
• einen Steuerungsmechanismus 90, der wahlweise über Steuerorgane 91 oder eine Funkstrecke 89 betätigbar ist und in einem Schaltschrank 92 untergebracht ist,
• einen Antriebsmechanismus 33 der einen hydraulischen Antriebsmotor 94 und ein Drehwerksgetriebe 96 für den Drehantrieb des Drehkopfes 32 gegenüber dem Lagerbock 35 aufweist,
• sowie eine in der Nähe des Lagerbocks 35 gestellfest angeordnete Arbeitsplattform 78.

Like from the Fig. 2 to 4 can be seen, the turret is equipped with a larger number of attachments, which have the following functions:

• A hydraulic assembly 84 for driving drive units for turret and Mastarmbewegung having an oil tank 86 and a driven by an electric motor 87 hydraulic pump 88,
• a control mechanism 90, which can be selectively actuated via control elements 91 or a radio link 89 and accommodated in a control cabinet 92,
• a drive mechanism 33 having a hydraulic drive motor 94 and a slewing gear 96 for the rotary drive of the rotary head 32 relative to the bearing block 35,
• and a working platform 78 arranged fixed to the frame in the vicinity of the bearing block 35.

A special feature of the invention is that the control cabinet 90 with control mechanism 90 and the hydraulic assembly 84 with oil tank 86 and hydraulic pump 88 are arranged on the base portion 50 of the rotary head 32 above the bearing block 35. Also arranged on the rotary head 32 above the bearing block 35 is the hydraulic drive motor 94 including slewing gear 96 for driving the rotary head 32. The control mechanism 90 is connected via an external power source and via the frame-fixed support column and the pivot bearing between bearing block 35 and turret 32 bridging electrical cable supplied with electricity.

Another special feature of the invention is that the oil tank 86 advantageously has a geometrically adapted to the rotary head 32 outer and inner contour. As in particular from the Fig. 3a to d and 4 it can be seen, the oil tank 86 is provided with a window opening 98, which is intended for the passage of a mounted on the turret 32 ballast boom 134. The ballast boom 134, however, must only be provided if the frame 10 is loaded so heavily due to the over the arm assembly 34 acting on the turret 32 load torque that it needs a load balance. If no ballast arm 134 is provided, the window opening 98 can be used to receive the control cabinet 92 for the control mechanism 90. In order to be prepared for both cases, a holder 102, which is pivotable relative to the window opening 98 about an axis 100 parallel to the axis of rotation 30 of the rotary head 32, is provided on the oil tank 86 for receiving the control cabinet 92. This makes it possible, in the presence of the ballast arm 134, the control cabinet 92 to pivot out of the window opening 98 via its holder 102, so that it can be operated by the working platform 78.

With the construction according to the invention, due to which the operationally necessary attachments, such as control cabinet 92, hydraulic assembly 88 and drive mechanism 33 are arranged directly on the rotary head 32 above the bearing block 35, it is achieved that the freedom of movement of the mechanic Range of the work platform 78 is improved. By attaching parts free working platform 78 allows a stumble-free running the installer when turning the turret 32 and a good view of the arm package 34. By eliminating the annoying attachments also arm package 34 can be placed close to the turret 32, whereby the load torque generated by and so that the deflection of the frame 10 can be reduced.

LIST OF REFERENCE NUMBERS

1,2,3,4

mast arms

10

frame

14

substructure

16

boom

22

Concrete conveying line

30

axis of rotation

32

Turn head

33

drive mechanism

34

arm package

35

bearing block

36

depository

40

Cylinder-piston unit

42

cylinder-tight end

44

rod end fixed

46.48

articulation points

50

base section

52

adapter piece

54

separation point

56.57

hooking

58.59

Recordings

74

lifting gear

76

Indexing plungers

78

working platform

82

Gravity position

84

hydraulic assembly

86

oil tank

87

electric motor

88

hydraulic pump

89

radio link

90

control mechanism

91

control organs

92

switch cabinet

94

drive motor

96

Slewing gear

98

window opening

100

axis

102

holder

116

boom

134

ballast carrier

136,137

bearings

152

adapter piece

154

separation point

156

Einhängeorgan

157

hooking component

158

Recordings

Claims (13)

1. Working device having a frame (10) configured preferably as a stationary support column, having a motor-driven rotary head (32) which is arranged on a bearing block (35), fixed to the frame, so as to be rotatable about a vertical rotation axis (30), having an arm assembly (34) consisting of a plurality of boom arms (1, 2, 3, 4) that are movable in pairs relative to one another at articulated joints or sliding joints and carry a concrete delivery line (22), which arm assembly (34) is articulated on the rotary head (32) about a horizontal rotation axis (30) with its first boom arm (1), having a control mechanism (90) that is actuable either via control members (91) or a radio link (89) and is arranged in a control cabinet (92), and a hydraulic assembly (84), having an oil tank (86) and a motor-driven hydraulic pump (88), for controlling drive units for the rotary-head and boom-arm movement, and having a working platform (78) arranged in a manner fixed to the frame in the vicinity of the bearing block (35), as a result of which the control cabinet (92) with the control mechanism (90) and the hydraulic assembly (84) with the oil tank (86) and hydraulic pump (88) are arranged on the rotary head (32) above the bearing block (35), wherein the rotary head (32) has a base part (50) arranged on the bearing block (35) and an adapter piece (52) comprising a bearing point (36) for the arm assembly (34), wherein the base part (50) of the rotary head (32) bears the adapter piece (52), and wherein the base part (50) and the adapter piece (52) are coupled together releasably at a separation point (54),
   characterized in that
   bores formed in the adapter piece (52) form the bearing point for the arm assembly (34) and a rotary-head-side articulation point (48) for a cylinder-piston unit (40) which pivots the arm assembly (34) with respect to the rotary head (32), wherein the adapter piece (52) has coupling elements configured as pin-like drop-in elements (56, 57), while the base part (50) is provided with receptacles (58, 59), peripherally open upwardly, for the drop-in elements (56, 57).
2. Working device according to Claim 1, characterized in that the rotary head (32) is rotatable with respect to the bearing block (35) by means of a hydraulic or electric drive motor (94) and a slewing gearbox (96), wherein the drive motor (94) and the slewing gearbox (96) are arranged on the rotary head (32) above the bearing block (35).
3. Working device according to Claim 1 or 2, characterized in that the hydraulic pump (88) is drivable by means of an electric motor (87) arranged on the rotary head (32).
4. Working device according to one of Claims 1 to 3, characterized in that the control mechanism (90) is supplied with electric power via an external power source and an electrical cable that is routed via the support column and bridges the rotary connection between the bearing block (35) and rotary head (32).
5. Working device according to one of Claims 1 to 4, characterized in that the oil tank (86) has a window (98) for receiving the control cabinet (92), and in that the control cabinet (92) is arranged on a holder (102) which can be pivoted with respect to the window (98) about an axis (100) parallel to the rotation axis (30) of the rotary head (32.)
6. Working device according to Claim 5, characterized in that the oil tank (86) has an external and internal contour that is geometrically matched to the rotary head (32).
7. Working device according to one of Claims 1 to 4, characterized in that the oil tank (86) has an external and internal contour that is geometrically matched to the rotary head (32).
8. Working device according to Claim 7, characterized in that the oil tank (86) has a window (98) with an internal contour that forms for the passage for a ballast outrigger (134) mounted on the rotary head (32).
9. Working device according to Claim 8, characterized in that the ballast outrigger (134) is coupled releasably to the base part (50) of the rotary head (32) by means of further coupling elements that are connectable together in a form-fitting manner in pairs via a further adapter piece (152) at a second separation point (154) located opposite the separation point (54) of the arm assembly (34).
10. Working device according to Claim 8 or 9, characterized by a holder (102) for receiving the control cabinet (92), said holder (102) being pivotable about an axis (100) parallel to the rotation axis (30) of the rotary head (32) with respect to the window (98) arranged on the oil tank (86).
11. Working device according to one of Claims 1 to 4 or 7 to 10, characterized in that the control cabinet (92) is arranged on a holder (102) close to the pedestal.
12. Working device according to Claim 5 or 6, characterized in that the control cabinet (92) is arranged on the holder (102) close to the pedestal.
13. Working device according to one of Claims 1 to 12, characterized in that the base part (50) and the adapter piece (52) have coupling elements that are connectable together in a form-fitting manner in pairs at their separation point (54).

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