WO2016078706A1 - Mastarm mit hebelgetriebe - Google Patents
Mastarm mit hebelgetriebe Download PDFInfo
- Publication number
- WO2016078706A1 WO2016078706A1 PCT/EP2014/075069 EP2014075069W WO2016078706A1 WO 2016078706 A1 WO2016078706 A1 WO 2016078706A1 EP 2014075069 W EP2014075069 W EP 2014075069W WO 2016078706 A1 WO2016078706 A1 WO 2016078706A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lever
- point lever
- mast arm
- recess
- point
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
Definitions
- the invention relates to a mast arm, in particular for a large manipulator, and a large manipulator, in particular a truck-mounted concrete pump with at least one such mast arm.
- Mast arms for large manipulators are known from the prior art.
- Such mast arms comprise at least two Mastarmsegmente which are limited to articulated joints about each horizontal bending axes relative to an adjacent Mastarmsegment by means of a respective drive element, in particular by means of a hydraulic cylinder, limited between a fold-in position and a working position.
- the levers are typically formed curved to prevent a collision between the lever and the concrete delivery line when moving the Mastarmsegmente.
- the known reversing lever but have the overall problem that they have a very high weight due to the large loads to be transmitted and because of the curved shape.
- the weight or mass of the mast arm should be reduced in relation to the reach of the mast.
- a mast arm according to the invention for a large manipulator comprises at least two mast arm segments, which are pivotally limited at articulated joints about each horizontal Mastarmsegment relative to an adjacent Mastarmsegment by a respective drive element, preferably a hydraulic cylinder, at least one of the drive elements is attached to a first Mastarmsegment and a lever mechanism acts on a second Mastarmsegment.
- the mast arm is characterized in that the lever mechanism at least one two-point lever, also referred to as a coupling or pull / push rod comprises, which has a first and a second leg, is curved and has at least one recess or an opening.
- the mast arm according to the invention has the advantage over the prior art that the lever mechanism for pivoting the Mastarmsegmente has a lower mass with comparable strength.
- the two-point lever according to the invention has two articulation or bearing points, with which it is connected to a Mastarmsegment or another lever of the lever mechanism.
- the bearing point is in particular designed as a bore into which a hinge pin or hinge pin engages in order to articulate the two-point lever with the Mastarmsegment and / or further lever.
- the Mastarmsegmente are pivotable about the largest possible angle to each other, the bearing points are located on the two-point lever as far as possible outside, preferably at opposite ends.
- the recess or the opening is preferably arranged in the center of the two-point lever.
- the center of the two-point lever means the region in which the legs merge into one another.
- the center does not necessarily have to represent the middle of the two-point lever. If the two-point lever is mirror-symmetrical, then ideally the center lies on the symmetry axis of the two-point lever.
- the at least one recess has a constant depth.
- the depth of the depression is ideally larger than the remaining wall thickness of the two-point lever in the region of the depression. As a result, as much material and thus weight, with sufficient strength and rigidity of the two-point lever can be saved.
- the depth of the depression increases from the edge to the center of the depression. Preferably, the depth increases continuously.
- the depression has an at least partially convex region in cross-section. The edge regions of the depression are preferably rounded in cross section.
- the center of the depression / opening is preferably in the center, ie in the middle between the two Hinged points, arranged the two-point lever.
- the depression is ideally symmetrical, in particular mirror-symmetrical.
- the two-point lever may have a plurality of depressions or openings.
- the depressions / breakthroughs can all be designed differently. But it is also possible that at least two recesses / openings are formed identically. Furthermore, at least two recesses / openings in plan view of the two-point lever have the same configuration, but differ in depth from each other.
- the depressions / openings are preferably arranged relative to one another in such a way that a web runs between adjacently arranged depressions, which preferably has a substantially uniform width.
- the mutually facing sides of adjacent recesses are arranged parallel to each other. Ideally, all webs are the same width.
- the depressions / openings may be formed so that between these and an outer side of the two-point lever, a web is formed, which has a substantially uniform width in the region of the depressions / openings.
- the recesses or openings preferably have a substantially angular shape.
- the depressions / breakthroughs are formed triangular or quadrangular. In order to reduce or prevent stresses in the corner areas, they are ideally rounded.
- the breakthroughs can be easily by punching, milling, drilling, forging or pouring into the two-point lever bring.
- the two-point lever can also have bilateral depressions. Between the bilateral depressions then remains a bridge stand.
- the recesses may have a different depth, so that the web is not centrally located in the lever surface.
- the bilateral depressions may be formed differently from each other. They can differ in size and / or shape from each other.
- the wells can also be from both Pages be introduced into different areas of the two-point lever.
- the depressions are preferably produced by milling.
- the two-point lever is symmetrical, in particular mirror-symmetrical design.
- the center of the two-point lever that is to say according to the invention the region in which the legs merge into one another, preferably forms the axis of symmetry.
- an inner side of the two-point lever preferably has a constant or uniform curvature.
- the curvature changes from the center to the ends of the two-point lever: It is only important here that the inside of the first leg corresponds to the inner side of the second leg mirrored on the axis of symmetry.
- the outside of the two-point lever or the legs preferably also has a constant or uniform curvature in a symmetrical embodiment of the two-point lever. It is also conceivable, however, that the curvature changes from the center to the ends of the two-point lever. In order to obtain a symmetry, the curvature profile of the first leg must correspond to the curvature of the second leg mirrored at the symmetry axis. In a symmetrical course, the outside of the two-point lever or the legs may have the same curvature profile as the inside of the two-point lever or the legs. If the curvature is the same, the sides run parallel to one another and the two-point lever has a constant width along its extent. If the outside has a greater curvature than the inside of the two-point lever, then the two-point lever is sickle-shaped. The width of the two-point lever increases from the ends towards the center.
- the two-point lever according to the invention is designed mirror-symmetrically only with respect to its outer extent. This means that in a reflection, for example, along the center, the inner sides of the legs and the outer sides of the legs are congruent, the wells do not necessarily have to cover completely.
- the thickness of the two-point lever according to the invention does not necessarily have to be constant over the entire extent of the two-point lever. It can, for example, increase or decrease from the ends towards the center.
- the two-point lever is asymmetrical. This offers the advantage that in this way the available space in the area of the articulated joint can be optimally utilized and the weight of the lever can be reduced.
- the lever mechanism can thus be designed overall more effective and weight-saving kinematic.
- the two-point lever may have an asymmetrical configuration in that the legs are formed differently long. Furthermore, an asymmetry can be obtained according to the invention in that at least one side of the first leg differs in its curvature from the curvature of the corresponding side of the second leg.
- the curvature of the inside of the first leg may differ from that of the inside of the second leg.
- the curvature of the outer side of the first leg may differ from that of the outer side of the second leg.
- the combination of different curvatures or curvature curves of the individual pages and legs of different lengths is possible.
- the mast arm according to the invention may also be a jib of an excavator or a moving unit of another construction or conveying machine. It is essential that the two Mastarmsegmente via a drive element which is attached to the first Mastarmsegment and a lever mechanism with at least one curved two-point lever acts with a recess or an opening on the second Mastarmsegment, limited to each other are pivotable.
- the invention relates to a large manipulator with a distribution boom, wherein the distribution boom has a rotatable about a vertical axis turntable and a pivotable about a horizontal pivot axis mounted thereon according to the invention mast arm.
- the large manipulator with the mast arm according to the invention with a lever mechanism having a two-point lever with at least one recess or a breakthrough, the large manipulator over the prior art has the advantage that it meets the requirements for increased range.
- FIGS. show a particularly preferred embodiment of the invention.
- the invention is not limited to the embodiment shown.
- the invention includes, as far as is technically feasible, any combination of the technical features which are listed individually in the claims or described in the description as relevant to the invention.
- FIG. 1 is a schematic view of a mast arm according to the invention in one embodiment
- FIG. 2 is a schematic view of a two-point lever according to the invention in a first embodiment
- FIG. 3 is a schematic view of a two-point lever according to the invention in a second embodiment
- Fig. 4 is a sectional view taken along the line AA in
- Fig. 5 is a schematic view of a two-point lever according to the invention in a third embodiment.
- FIG. 1 shows a schematic view of a mast arm 10 according to the invention in one embodiment.
- the mast arm 10 has a first 12 and a second 14 Mastarmsegment, which are limited to an articulated joint 18 about a horizontal bending axis relative to the adjacent Mastarmsegment 12, 14 by means of a drive element 22 pivotally limited.
- the drive element which is preferably a hydraulic cylinder, is attached to the first Mastarmsegment 12 and acts via a lever mechanism 16 on the second Mastarmsegment 14.
- the lever mechanism preferably has two levers, wherein a lever is formed as a curved two-point lever 20 and has at least one recess or a breakthrough.
- the mast arm 10 still has a thick matter delivery line 24.
- the thick matter delivery line 24 extends through the articulated joint 18. In this way, a small distance between the thick matter delivery line 24 and the Mastarmsegmenten 12, 14 can be achieved, which has an overall positive effect on the vibration behavior of the mast
- FIG. 2 shows a schematic view of a two-point lever 20 'according to the invention in a first embodiment.
- the two-point lever 20 ' is curved and has a first leg 26 and a second leg 28.
- the legs 26, 28 converge in the center (dashed line) of the two-point lever 20 'together.
- the two-point lever 20 ' in each case has an articulation point 32', 32 ", with which it can be connected in a pivotable manner to the boom arm segments 12, 14 or to another lever of the lever mechanism 16.
- the articulation points 32 ', 32" are designed as bores. in which a hinge pin or hinge pin can engage.
- the ends of the two-point lever 20 ' are preferably rounded.
- the two-point lever 20 ' has a recess 30 which is arranged in the center of the two-point lever 20'.
- the recess 30 is preferably so designed such that the wall thickness of the two-point lever 20 'in the region of the recess 30 is greater than zero, but less than the wall thickness outside the recess 30.
- the recess 30 thus has a bottom 44.
- the depression represents a kind of depression. However, it is also readily possible that the depression 30 is formed as a breakthrough or a hole.
- the recess 30 has a substantially triangular shape, wherein the corners 38 are rounded. The rounding counteracts voltage peaks.
- the two-point lever 20 ' is mirror-symmetrical.
- the dashed line shown in Figure 2 represents the axis of symmetry there.
- the inner side 34 of the two-point lever 20 ' preferably has a uniform or uniform curvature profile. However, it is also conceivable that the curvature changes from the center of the two-point lever 20 'to the ends; It is essential here that the curvature of the first leg 26 corresponds to that of the mirrored second leg 28.
- the outer side 36 of the two-point lever 20 ' has the same curvature profile as the inner side 34.
- the sides 34, 36 thus run parallel to each other, so that the two-point lever 20 'along its extension has a constant width.
- the thickness of the two-point lever 20 'does not necessarily have to be constant over the entire extent of the two-point lever 20'. It can increase towards the center.
- FIG. 3 shows a schematic view of a two-point lever 20 "according to the invention in a second embodiment
- the two-point lever 20" is curved and has a first leg 26 'and a second leg 28'.
- the legs 26 ', 28' converge in the center (dashed line) of the two-point lever 20 "together.
- the two-point lever 20 has a plurality of recesses 30 ', 30".
- the recesses 30 ', 30 may be formed as a trough 30" or as an opening 30'.
- the depressions / apertures 30 ', 30 have a substantially triangular or quadrilateral shape, the corners 38 being rounded off, and the depressions / apertures 30', 30" are preferably arranged on the two-point lever 20 "such that between them in each case a web 40 is arranged, the in particular has a uniform width.
- one side of the depressions / openings 30 ', 30 runss parallel to the outer side 36 of the two-point lever 20".
- the two-point lever 20 ' is mirror-symmetrical.
- the dashed line shown in Figure 3 represents the axis of symmetry.
- the inner side 34 of the two-point lever 20 ' preferably has a uniform or uniform curvature.
- the outer side 36 of the two-point lever 20 has a greater curvature than the inner side 34.
- the width of the two-point lever 20" increases from the ends towards the center.
- the two-point lever 20 is formed as a whole sickle-shaped.
- the two-point lever 20 to be mirror-symmetrical only in terms of its outer extent, which means that, when mirrored along the center (dashed line), the inner side 34 ', 34" of the legs 26', 28 'and the outer sides 36 ', 36 "of the legs 26', 28 'are congruent, the recesses 30', 30" but not to cover.
- Figure 4 shows a sectional view taken along the line AA in Figure 3.
- the recess 30 "of the two-point lever 20" is formed as a trough and preferably has a constant depth b.
- the depth b is thereby preferably greater than the remaining wall thickness a of the two-point lever 20 ", whereby it is possible to save as much material and weight as possible, but it is also readily conceivable that the depth b of the depression 30" extends from the edge 42 to the center 44 It is also conceivable that the depression 30 "is formed as an opening, the remaining wall thickness a of the two-point lever 20" being zero in this region. Have wells.
- a web is then arranged between the two-sided depressions 30 "
- the depressions 30" preferably have mutually differing depths, so that the web is not arranged centrally in the lever surface.
- the bilateral depressions may differ in size and / or shape from each other.
- 5 shows a schematic view of a two-point lever 20 "according to the invention in a third embodiment
- the two-point lever 20" is curved and has a first leg 26 "and a second leg 28".
- the legs 26 ', 28' converge in the center (dashed line) of the two-point lever 20 "together.
- the two-point lever 20 has three depressions / apertures 30.
- the depressions 30 have an essentially triangular shape, the corners being rounded off,
- the depressions / apertures 30 are preferably arranged on the two-point lever 20" such that there is a web between them 40 is arranged, which has a uniform width.
- one side of the recesses 30 ' extends parallel to the outer side 36', 36 "of the two-point lever 20". It is also conceivable that the asymmetrically designed two-point lever 20 "has recesses on both sides.
- the inner side 34 'of the leg 26" may at least partially have a different curvature than the inner side 34 "of the leg 28" 'of the leg 26' at least partially have a different curvature than the outer side 28 "of the leg 28".
- the sides 34 ', 34 ", 36', 36" of the legs 26 ", 28" may extend straight in regions.
- the legs 26 ", 28" are also of different lengths.
- the outer side 36 ', 36 "of the two-point lever 20" has a greater curvature than the inner side 34', 34 ", thereby increasing the width of the two-point lever 20" from the ends towards the center and the two-point lever 20 "being designed as a sickle ,
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2014/075069 WO2016078706A1 (de) | 2014-11-20 | 2014-11-20 | Mastarm mit hebelgetriebe |
DE112014007199.4T DE112014007199A5 (de) | 2014-11-20 | 2014-11-20 | Mastarm mit Hebelgetriebe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2014/075069 WO2016078706A1 (de) | 2014-11-20 | 2014-11-20 | Mastarm mit hebelgetriebe |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016078706A1 true WO2016078706A1 (de) | 2016-05-26 |
Family
ID=52130207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/075069 WO2016078706A1 (de) | 2014-11-20 | 2014-11-20 | Mastarm mit hebelgetriebe |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112014007199A5 (de) |
WO (1) | WO2016078706A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019009818A1 (en) * | 2017-07-03 | 2019-01-10 | Tajfun Liv, Proizvodnja In Razvoj D.O.O. | CRANE OR APPARATUS FOR SIMILAR HANDLING WITH INTEGRATED ASSEMBLY FOR OVERCOMING EACH RESTPOINT POSITION BETWEEN A PRIMARY PART AND A SECONDARY PART OF ITS OPERATING ARM |
EP3477018A1 (de) | 2017-10-26 | 2019-05-01 | Schwing GmbH | Hohler zweipunkthebel |
EP3485108B1 (de) | 2016-07-12 | 2020-05-27 | Schwing GmbH | Grossmanipulator mit gewichtsoptimiertem knickmast |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2439357A1 (de) * | 2010-02-05 | 2012-04-11 | Hunan Sany Intelligent Control Equipment Co., Ltd | Betonpumpfahrzeug und auslegervorrichtung dafür |
WO2013091486A1 (zh) * | 2011-12-22 | 2013-06-27 | 中联重科股份有限公司 | 销轴的安装结构、工程机械的臂架结构和混凝土泵送设备 |
WO2013185447A1 (zh) * | 2012-06-13 | 2013-12-19 | 中联重科股份有限公司 | 销轴、销轴的安装结构和混凝土泵送设备 |
DE102012213727A1 (de) * | 2012-08-02 | 2014-02-06 | Putzmeister Engineering Gmbh | Betonverteilermast für Betonpumpen |
WO2014032840A1 (de) * | 2012-08-31 | 2014-03-06 | Putzmeister Engineering Gmbh | Betonverteilermast |
DE102012216243A1 (de) * | 2012-09-13 | 2014-03-13 | Putzmeister Engineering Gmbh | Umlenkhebel eines Antriebs- und Koppelgetriebes für den Einsatz in einem Betonverteilermast |
-
2014
- 2014-11-20 WO PCT/EP2014/075069 patent/WO2016078706A1/de active Application Filing
- 2014-11-20 DE DE112014007199.4T patent/DE112014007199A5/de active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2439357A1 (de) * | 2010-02-05 | 2012-04-11 | Hunan Sany Intelligent Control Equipment Co., Ltd | Betonpumpfahrzeug und auslegervorrichtung dafür |
WO2013091486A1 (zh) * | 2011-12-22 | 2013-06-27 | 中联重科股份有限公司 | 销轴的安装结构、工程机械的臂架结构和混凝土泵送设备 |
WO2013185447A1 (zh) * | 2012-06-13 | 2013-12-19 | 中联重科股份有限公司 | 销轴、销轴的安装结构和混凝土泵送设备 |
DE102012213727A1 (de) * | 2012-08-02 | 2014-02-06 | Putzmeister Engineering Gmbh | Betonverteilermast für Betonpumpen |
WO2014032840A1 (de) * | 2012-08-31 | 2014-03-06 | Putzmeister Engineering Gmbh | Betonverteilermast |
DE102012216243A1 (de) * | 2012-09-13 | 2014-03-13 | Putzmeister Engineering Gmbh | Umlenkhebel eines Antriebs- und Koppelgetriebes für den Einsatz in einem Betonverteilermast |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3485108B1 (de) | 2016-07-12 | 2020-05-27 | Schwing GmbH | Grossmanipulator mit gewichtsoptimiertem knickmast |
WO2019009818A1 (en) * | 2017-07-03 | 2019-01-10 | Tajfun Liv, Proizvodnja In Razvoj D.O.O. | CRANE OR APPARATUS FOR SIMILAR HANDLING WITH INTEGRATED ASSEMBLY FOR OVERCOMING EACH RESTPOINT POSITION BETWEEN A PRIMARY PART AND A SECONDARY PART OF ITS OPERATING ARM |
US11554940B2 (en) | 2017-07-03 | 2023-01-17 | Tajfun Liv, Proizvodnja In Razvoj D.O.O. | Crane or similar manipulating apparatus with integrated assembly for overcoming each dead position between primary and secondary part of its operational arm |
EP3477018A1 (de) | 2017-10-26 | 2019-05-01 | Schwing GmbH | Hohler zweipunkthebel |
DE102017125145A1 (de) | 2017-10-26 | 2019-05-02 | Schwing Gmbh | Hohler Zweipunkthebel |
Also Published As
Publication number | Publication date |
---|---|
DE112014007199A5 (de) | 2017-08-03 |
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