EP1636443B1 - Articulated mast for movable concrete pumps - Google Patents

Abstract

A mobile concrete pump comprising at least five mast arms ( 1 to 7 ) which are pivotable relative to each other about horizontal rotation axes (B to G). The first respective mast arm is hinged to a mast block ( 22 ) so as to be pivotable about a horizontal rotation axis (A), said mast block being rotatable about a vertical axis ( 20 ), while one end of the last mast arm has no joint. In order to be able to add other mast arms in a modular manner, a first Z-type folding group comprising the last three mast arms, a first coil-type folding group comprising the penultimate, third to last and fourth to last mast arm, and a second Z-type folding group comprising the third to last, fourth to last, and fifth to last mast arm are provided in a preferred embodiment. The basic configuration can be complemented with additional mast arms by having a sixth to last mast arm form a Z-type folding group consisting of four mast arms along with the third to last, fourth to last, and fifth to last mast arm while a seventh to last mast arm forms a second coil-type folding group together with the fifth to last and sixth to last mast arm.

Description

The invention relates to a articulated mast for mobile concrete pumps with at least five mutually horizontal buckling axes against each other pivotable mast arms, wherein the respective first mast arm is articulated about a further bending axis on a rotatable about a vertical axis mast bracket and the last mast arm is articulated at one end, and wherein the mast arms in groups in the manner of a Z-fold or a roll-folding for transport purposes against each other are foldable.

It is a concrete distribution boom of this type known ( DE-B-3446290 ), in which all mast arms are folded against each other at their articulated joints in the manner of a Z-fold. This concrete boom has a long reach and can be used both in low construction sites and in building construction. The Z-folding ensures a rapid operational readiness even after briefly lifting the only partially unfolded arm package and high flexibility, especially when concreting hard to reach places, with dead spaces are largely avoided both in the high-vehicle close-up and concreting in low spaces. Concreting parallel to the working plane is possible with the Multi-Z folding. However, bringing the end hose up to the driver's cab has to be paid for with a relatively high drop-out height.

Next, a five-armed concrete distribution boom is known ( WO 94/08111 ), whose mast arms 1, 2, 3 in opposite directions in the manner of a Z-fold against each other foldable, while the mast arms 3, 4, 5 at their joints D and E respectively in the same direction to the mast arms 2 and 3 in the region of their articulated joint C in the manner of a Roll folding against each other are foldable. This mast configuration is in both lower ground floor rooms overcoming Obstacles as well as on higher floors can be used for concreting with parallel hose guide and low drop-out height.

The previously known mast configurations are designed so that they can be arranged on multi-axle chassis with a continuous rigid frame or on tractor units. By the Highway Code the vehicle length and height limits are set, which preclude a further increase in the range of the distribution booms.

Proceeding from this, the present invention seeks to develop a bucking mast, which allows a significant increase in range while maintaining permissible axle loads and heights in the driving state of a mobile concrete pump.

To solve this problem, the feature combinations specified in claims 1 and 4 are proposed. Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.

The solution according to the invention is based on the idea that by means of a suitable type of folding of individual mast groups of the articulated mast a modular extension by means of further boom arms is possible, which permits a transport folding suitable for two-part vehicles.

In order to achieve this, according to a first variant of the invention, a first Z-folding group consisting of the last three fattening arms, a first roll folding group, consisting of the second last, third last and fourth last fattening arm and a second Z folding group, consisting of the third last, Fourth and fifth last mast arm provided. This basic configuration may additionally comprise a sixth last mast arm, which together with the third last, fourth last and fifth last mast arm forms a four-mast arm Z-fold group. In addition, a can Siebtletzter Mastarm be provided, which forms a second roll folding group together with the fifth last and sixth last mast arm.

According to a further embodiment variant according to the invention, a first Z-folding group consisting of the four last mast arms is a first roll folding group consisting of the third last, fourth last and fifth last mast arm and a second Z folding group consisting of the fourth last, fifth last and sixth last mast arm intended. This basic configuration may additionally comprise a seventh-last mast arm, which forms a second roll folding group together with the fifth last and sixth last mast arm.

According to an advantageous embodiment of the invention, the pivoting range of the last and the penultimate hinge is at least 200 °, wherein the pivoting range of the penultimate hinge should advantageously be at least 260 °. A further advantageous embodiment of the invention provides that the pivoting range of the third last and fourth last joint is 170 ° to 270 °, while the pivoting range of the fifth last and / or sixth last joint should be 240 ° to 280 °. At the first joint, the first mast arm of the articulated mast should have a pivoting range of at least 90 °, the upper limit being 180 ° about a vertical axis because of the rotatability of the mast block.

Fig. 1a,

2a und 3a drei Seitenansichten von fahrbaren Betonpumpen mit fünfarmigem, sechsarmigem und siebenarmigen Knickmast

Fig. 1 b,

und 1c eine vergrößerte Darstellung der fahrbaren Betonpumpe nach Fig. 1a sowie ein Faltungsschema des Knickmasts im Zustand der Straßenfahrt;

Fig. 2b

bis 2d eine Seitenansicht der fahrbaren Betonpumpe gemäß Fig. 2a im Zustand der Straßenfahrt und im Zustand der Baustellenfahrt sowie Faltungsschema des Knickmasts im Zustand der Baustellfahrt nach Fig. 2c;

Fig. 3b

bis 3d eine Seitenansicht der fahrbaren Betonpumpe gemäß Fig. 3a im Zustand der Straßenfahrt und im Zustand der Baustellenfahrt sowie Faltungsschema des Knickmasts im Zustand der Baustellenfahrt nach Fig. 3c;

Fig. 4a

bis 4c eine Seitenansicht einer fahrbaren Betonpumpe mit sechsarmigem Knickmast im Zustand der Straßenfahrt und im Zustand der Baustellenfahrt sowie Faltungsschema des Knickmasts im Zustand der Baustellenfahrt nach Fig. 4b;

Fig. 5a

bis 5c eine Seitenansicht einer fahrbaren Betonpumpe mit siebenarmigem Knickmast im Zustand der Straßenfahrt und im Zustand der Baustellenfahrt sowie Faltungsschema des Knickmasts im Zustand der Baustellenfahrt nach Fig. 5b.

In the following the invention will be explained in more detail with reference to the embodiments schematically illustrated in the drawing. Show it

Fig. 1a,

2a and 3a three side views of mobile concrete pumps with five-armed, six-armed and seven-armed articulated mast

Fig. 1b,

and Figure 1c shows an enlarged view of the mobile concrete pump Fig. 1a and a folding scheme of the buckling mast in the state of road driving;

Fig. 2b

to 2d is a side view of the mobile concrete pump according to Fig. 2a in the state of road travel and in the state of construction site travel and folding scheme of the buckling mast in the condition of the construction site journey Fig. 2c ;

Fig. 3b

to 3d a side view of the mobile concrete pump according to Fig. 3a in the state of road travel and in the state of construction site travel and folding scheme of the buckling mast in the state of construction site driving to Fig. 3c ;

Fig. 4a

to 4c a side view of a mobile concrete pump with six-armed articulated mast in the state of road driving and in the state of construction site travel and folding scheme of the buckling mast in the state of construction site driving to Fig. 4b ;

Fig. 5a

to 5c is a side view of a mobile concrete pump with seven-armed articulated mast in the state of road travel and in the state of construction site travel and folding scheme of the buckling mast in the state of construction site driving to Fig. 5b ,

The mobile concrete pumps shown in the drawing have a mounted on a chassis 10 of a truck chassis 12 body frame 14 which is supported with support arms 16 on a substrate 18 under lifting the chassis 10. The body frame comprises a mast block 22 rotatable about a vertical axis of the chassis 10 and carrying a concrete distributor mast 24 designed as a multi-articulated articulated mast. The articulated mast has a first boom arm 1 pivotable at a first articulated joint A with a horizontal articulation axis relative to the stanchion 22 and further articulated joints D to E ( Fig. 1a to 1d ) or B to F ( Fig. 2a to 2d ) or B to G ( Fig. 3a to 3d ) about horizontal buckling axes against each other pivotable mast arms 2 to 5 or 2 to 6 or 2 to 7.

The chassis-side mounting frame 14 also carries a designed as a two-cylinder sludge pump unit 26, which operates on the principle of a tandem pump and each sucked in a suction stroke from a material feed tank 28 concrete column in a subsequent pressure stroke in one of a pressure pipe 30 and a plurality of concrete pipes Concrete delivery line presses. About the conveyor line, which is guided by the rotatable mast bracket 22 and laid with their concrete hoist, not shown, parallel to the mast arms and rigidly connected to these, the concrete is pumped to the desired concreting.

When driving, the mast arms must be folded and positioned on the chassis so that a prescribed according to the Highway Code vehicle length and vehicle height is not exceeded.

At the in Fig. 2 to 5 As shown embodiments, the mobile concrete pump in the state of road driving next to the mounting frame 14 supporting chassis 10 on a trailer 32, which has its own chassis 34 and which is connected via a coupling member 36 to the chassis 10. The trailer has a about a vertical axis 38 relative to the chassis of the trailer rotatable support bracket 40, on the state of road travel over the rear end of the chassis 10 projecting arm package 42 can be supported. The arm package 42 consists of the opposite of the first mast arm 1 in the extended position of the second articulated joint B folded second mast arm 2 and the opposite of the second mast arm 2 in the retracted position remaining Mastarmen 3 to 6 or 3 to 7 and forms together with the first Mastarm 1, the coupling member 36 between the chassis 10 and trailer 32. The trailer 32 is designed self-steering. The steering device of the trailer 32 is expedient electronically with a steering device of the chassis 10 coupled, so that between the chassis 10 and trailer 32 is a matched cornering possible. The vertical axes 20 and 38 of the mast bracket 22 and the support bracket 40 are formed in the state of road travel as free axes of rotation of the coupling member 36. As indicated by the double arrow 44 in Fig. 2a and 3a is indicated, the second articulated joint B is freely pivotable about its bending axis in the state of road travel. In the uncoupled state, the arm assembly 42 consisting of the boom arms 2 to 6 or 2 to 7 can be folded against the first boom arm 1 and stored alone on the chassis 10 (FIG. Fig. 2c . 3c . 4b . 5b ). When in the state of road driving according to Fig. 2b . 3b . 4b and 5b already the maximum vehicle height is reached, after the additional folding of the arm package 42 will result in an excessive vehicle height according to the Highway Code, which is only allowed in the private construction area (state of construction site driving).

In operation, it must be ensured that the chassis is sufficiently supported with its support arms 16. An improvement in this regard can be achieved in that the trailer 32 is in the uncoupled state as ballast on the chassis 10 can be moved or raised.

The Fig. 1a, 2a and 3a show that by a modular construction of the distribution boom with relatively simple means using equal arm components a transition between a five-armed ( Fig. 1a ) over a six-armed ( Fig. 2a ) on a seven-armed ( Fig. 3a ) Placing boom 24 is possible.

Starting point is the in Fig. 1a shown construction, consisting of a semitrailer with five-armed distribution boom 24/5 for a range of about 60 m. The use of a semitrailer in the construction of a mobile concrete pump is the subject of EP-B-0038954 ,

Will that be in Fig. 1a shown arm package 42 supplemented by an additional mast arm 1 ', one arrives at the in Fig. 2a shown six-armed mast configuration, the arm package 42 'is supported in the state of driving on a three-axle trailer 32. The previous arms 1, 2, 3, etc. become the new arms 2 ', 3', 4 ', etc. In Fig. 2a this is indicated by the arm markings 2 '/ 1, 3' / 2, 4 '/ 4, etc. The range of the distribution boom 24 is increased by the additional arm 1 'to about 70 m.

If you fold the entire articulated mast Fig. 2a together and turns it by 180 °, you get an arm package 42 ", which can be supplemented by a new boom arm 1". The arm 2 "in Fig. 3a must be opposite the arm 1 'in Fig. 2a geometrically adapted (bent). The previous arms 2 ", 3", 4 ", etc. are now to the arms 3", 4 ", 5", etc .. In Fig. 3a this is indicated by the arm markings 3 "/ 2 '/ 1, 4" / 3' / 2, and so on. The six-armed arm package 42 "is supported on a five-axis follower 32. Overall, results in Fig. 3a a seven-armed distribution boom 24/7 with a range of about 80 m.

The folding scheme of the five-armed distribution boom behind Fig. 1a can be found next to the illustration in the state of road driving according to Fig. 1b in Fig. 1c , The arms 1, 2 and 3 are folded there Z-like, while the arm group 3, 4 and 5 is folded in a kind of rolling fold.

The folding scheme of the six-armed distribution boom behind Fig. 2a can be found next to the depictions in the state of the road trip and the construction site journey ( Fig. 2b and 2c ) in Fig. 2d , The arms 1, 2 and 3 and the arms 4, 5 and 6 are folded there Z-like, while the arm group 3, 4 and 5 is folded in the manner of a roll fold.

The in the Fig. 3a to 3d and 5a to 5c shown seven-arm mast configurations differ only in the folding type of individual mast groups: Fig. 3d : Arms 1, 2, 3: roll folding Arms 2, 3, 4: Z-fold Arms 3, 4, 5: roll folding Arms 4, 5, 6, 7: Z-fold Fig. 5c : Arms 1, 2, 3: roll folding Arms 2, 3, 4, 5: Z-fold Arms 4, 5, 6: roll folding Arms 5, 6, 7: Z-fold.

On the pivoting angles in the joints A to G and A to F and A to G in the Fig. 1c . 2d . 3d . 4c . 5c are expressly referred to.

In summary, the following should be noted: The invention relates to a mobile concrete pump with at least five mutually horizontal buckling axes B to G against each other pivotable mast arms 1 to 7, wherein the respective first mast arm about a further bending axis A on a about a vertical axis 20 rotatable mast bracket 22nd is articulated and the last mast arm at one end of the joint is free. In order to allow a modular supplementation by further mast arms, in a preferred embodiment of the invention, a first Z-folding group consisting of the last three Mastarmen, a first roll-folding group consisting of the second last, third last and fourth last Mastarm and a second Z-folding group consisting of the third last, fourth last and fifth last mast arm. This basic configuration can be supplemented by further mast arms in that a sixth last mast arm together with the third last, fourth last and fifth last mast arm forms a four-mast arm Z-fold group, and the seventh last mast arm together with the fifth last and sixth last mast arm a second roll folding group forms.

Claims (10)

1. Mobile concrete pump comprising at least five mast arms (1 to 7) which are pivotable relative to each other about horizontal pivot axes (B to G), wherein the respective first mast arm (1) is hinged to a mast block (22) so as to be pivotable about a horizontal pivot axis (A), said mast block being rotatable about a vertical axis (20), while the end of the last mast arm has no articulated joint, and wherein the mast arms can be folded in groups relative to each other in the manner of a Z-fold or a coil-type fold for transport purposes, characterized by a first Z-type folding group comprising the last three mast arms, a first coil-type folding group comprising the penultimate, third to last and fourth to last mast arms, and a second Z-type folding group comprising the third to last, fourth to last, and fifth to last mast arms.
2. Mobile concrete pump according to claim 1, thereby characterized, that a sixth to last mast arm, along with the third to last, fourth to last, and fifth to last mast arms, form a Z-type folding group consisting of four mast arms.
3. Mobile concrete pump according to claim 1 or 2, thereby characterized, that a seventh to last mast arm forms a second coil-type folding group together with the fifth to last and sixth to last mast arms.
4. Mobile concrete pump comprising at least six mast arms (1 to 7) which are pivotable relative to each other about horizontal pivot axes (B to G), wherein the respective first mast arm (1) is hinged to a mast block (22) so as to be pivotable about a horizontal pivot axis (A), said mast block being rotatable about a vertical axis (20), while the end of the last mast arm has no articulated joint, and wherein the mast arms can be folded in groups relative to each other in the manner of a Z-fold or a coil-type fold for transport purposes, characterized by a first Z-type folding group comprising the last four mast arms, a first coil-type folding group comprising the third to last, fourth to last and fifth to last mast arms, and a second Z-type folding group comprised of the fourth to last, fifth to last and sixth to last mast arms.
5. Mobile concrete pump according to claim 4, thereby characterized, that a seventh to last mast arm forms a second coil-type folding group together with the fifth to last and sixth to last mast arms.
6. Articulated mast according to one of claims 1 through 5, thereby characterized, that the pivot range of the last and penultimate linkage is at least 200°.
7. Articulated mast according to one of claims 1 through 6, thereby characterized, that the pivot range of the penultimate linkage is at least 260°.
8. Articulated mast according to one of claims 1 through 7, thereby characterized, that the pivot range of the third to last and fourth to last linkage is 170° to 270°.
9. Articulated mast according to one of claims 1 through 8, thereby characterized, that the pivot range of the fifth to last and sixth to last linkage is 240° to 280°.
10. Articulated mast according to one of claims 1 through 9, thereby characterized, that the pivot range of the first linkage (A) is 90° to 180°.

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