WO2022194935A1 - Stützkonstruktion - Google Patents
Stützkonstruktion Download PDFInfo
- Publication number
- WO2022194935A1 WO2022194935A1 PCT/EP2022/056832 EP2022056832W WO2022194935A1 WO 2022194935 A1 WO2022194935 A1 WO 2022194935A1 EP 2022056832 W EP2022056832 W EP 2022056832W WO 2022194935 A1 WO2022194935 A1 WO 2022194935A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support
- support leg
- introduction device
- load introduction
- support structure
- Prior art date
Links
- 238000010276 construction Methods 0.000 title abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims description 30
- 238000003466 welding Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
Definitions
- the present invention relates to a support structure for a working machine, in particular having a mast.
- Support structures of the type mentioned serve to support machines provided with a mast, in particular a boom arrangement comprising a plurality of mast arms.
- the support legs of the support structure When the mast is not in operation, the support legs of the support structure are retracted into a space-saving support leg box so that they do not or only slightly protrude when the machine is moved to another location.
- the extended support leg often has to absorb large forces that are transmitted via the support leg box and directed to the ground. The force is usually transmitted from the support leg box to the support leg in two places: the support leg rests in the area of the opening of the support leg box at the top of this and is supported at its rear end in the support leg box on the bottom thereof.
- Known support legs have a hollow body, at the end of which protrudes from the support leg box, a support foot protrudes downwards.
- the hollow body is composed of vertically aligned web plates and horizontally aligned chord plates.
- the support leg must be particularly stable at these points. This is regularly achieved by transverse bulkheads being welded into the support leg, with the result that the support leg can only be used in positions in which the force is introduced in the area of the transverse bulkheads. This reduces the number of possible positions of the supporting leg. In most cases, the work machine can only be operated with the support leg fully, half or not at all extended. Installing a large number of transverse bulkheads in the support leg would disadvantageously increase its weight.
- DE 102014 014 038 A1 discloses a generic support structure in which the web plates of the support legs are exposed and form lower and upper support surfaces and the support legs are spaced apart in two with the narrow sides of the web plates pointing downwards mutually in the longitudinal direction extending support strips rest in the support leg box.
- U1 discloses a support device for supporting frames with projecting loads, in which upper load introduction blocks are provided on an inside of the support leg box in the area of its opening and lower load introduction blocks are provided at a distance therefrom inside the support leg box . Load in cable blocks are screwed or bolted on.
- the invention is based on the finding of providing a single load application point inside the support leg box, combined with a reinforcement extending essentially over the entire length of the support leg or the extension leg for support on the single load application point.
- a structurally simple and cost-effective load application with a force flow optimization is provided.
- the combination of a single load application point in the support leg box (in addition to the upper belt load application provided at an open end of the support leg box) and a continuous reinforcement in the support leg that can be extended enables support with a large number of leg positions (i.e. different leg positions) ranging up to full flexibility From draw lengths) . This allows a more flexible usability of the working machine equipped with the support structure according to the invention.
- the invention thus relates to a support structure for a working machine having a mast, with a support leg box open to a front side and with a support leg which is mounted in the support leg box for movement between a fully retracted position and a fully extended position by a maximum extension length is slidably mounted in the longitudinal direction, wherein in or on the support leg box a first Lasteinlei processing device for receiving a leg box during operation in the support to be derived upward force and a single second load introduction device for absorbing a force to be dissipated downwards in the support leg box during operation, and wherein the support leg has a reinforcement element which extends essentially over the length of the support leg and is designed to rest on the single second load introduction device (32).
- the support leg can be in several parts, for example as a telescopic leg.
- the support structure comprises precisely one first load introduction device and precisely one second load introduction device.
- a load introduction device is to be understood as an arrangement of at least one load introduction element suitable for load dissipation.
- Figure 1 shows a greatly simplified Stauerkon construction with a support leg, a support leg box and placed on the support leg box bearing block for a mast.
- FIG. 2 shows a first embodiment of a support structure according to the invention in a highly schematic lateral sectional view.
- FIG. 3 shows a second embodiment of a support structure according to the invention in a highly schematic sectional view from the side.
- FIG. 4 shows the representation of Figure 2, a variant of the first embodiment with a telescopic leg designed as a support leg.
- FIG. 5 analogous to the illustration in FIG. 32, shows a variant of the second embodiment with a support leg designed as a telescopic leg.
- FIG. 6 shows a perspective cut-up view of a support leg box according to the first embodiment.
- FIG. 7 shows a further telescopic leg variant of the first embodiment in the extended state in a perspective view cut from the side.
- Figure 8 shows the support structure of Figure 7 in the retracted state.
- Figure 9 shows the support structure of Figure 7 in cross section.
- Figure 10 shows the support structure of Figure 5 in a perspective view in the extended state.
- Figure 11 shows the support structure of the figure
- FIG. 12 shows the support structure of Figure 10 in cross section.
- FIG. 13 shows a further modification of the embodiment of FIG.
- Figures 14a-14d show possible variants of the structure of a support leg hollow body.
- FIG. 1 shows a schematic perspective view to illustrate a support structure 10 for a machine having a mast.
- the support structure 10 comprises, in a manner known per se, a support leg box 12 which is integrated into a bearing block 14 for the mast.
- the support leg box 12 is open towards a front side 16 and is designed as a box-shaped or cuboid-shaped hollow body.
- a support leg 20 is accommodated in the support leg box 12, which has a hollow body 24 that extends in a longitudinal direction 22 and is displaceable in the longitudinal direction 22 in the support leg box 12, and a support foot that is mounted on a front end of the hollow body 24 and projects downwards 26 has.
- the illustration in FIG. 1 shows the support leg 20 in a partially extended position.
- the support leg 20 has a length L and is accommodated in a fully retracted position with essentially the entire length L in the support leg box 12 (overhangs through the open front side 16 and possibly also through a likewise open rear side, not shown). are possible).
- the support leg 20 can be pushed by Ver through the open front 16 of the support leg box least 12 to a maximum extension length A from the support leg box 12 can be moved.
- a residual length D which essentially corresponds to the total length L minus the maximum extension length A, remains in the support leg box 12 (cf. FIGS. 2 and 3). Any partially extended intermediate positions of the support leg are possible with the invention.
- the hollow body 24 of the support leg 20 can consist of two spaced, parallel web plates 64 and two spaced, parallel web plates 60, 62 connecting the web plates 64 to one another , namely an upper chord 60 and a lower chord 62, in particular by welding, be assembled.
- the support leg box 12 is accordingly made of two spaced parallel web plates 54 and two spaced parallel to each other, the web plates 54 mitei Nander connecting belt plates 50, 52, namely an upper belt 50 and a lower belt 52, in particular by welding Ver assembled.
- the support leg box 12 has a first load introduction device 30 in the area of its open front side 16 .
- the first load introduction device 30 can be designed in a manner known per se as a substantially U-shaped reinforcement bracket which is open at the bottom and has a base 40 and from the base 40 has free legs 42 abste downwards.
- An underside of the base 40 forms a support surface 44 on which the upper chord 60 of the support leg 20 rests, as will be described in more detail below (see FIG. 6).
- the support leg 20 absorbs a load during operation, it is supported with its upper belt 60 on the support surface 44 .
- Other configurations of the first load introduction device 30 are possible.
- the U-shaped reinforcement bar can not only be arranged (as shown and described) in front of the upper chord 50 and form the support surface 44 there, but it is also possible to place the reinforcement bar on the upper chord so that the flow of force through the Obergurt on the Ba sis 40 of the bracket takes place. Furthermore, it is possible how to be described below, to arrange the first load application device in the area of the side surface (webs) of the support leg box.
- the support leg box 12 has a single second load introduction device 32 on the inside.
- the second load introduction device 32 is arranged in the support leg box 12 at a given distance D from the front side 16 of the support leg box 12 .
- the given distance D essentially corresponds to the described residual length with which the support leg 20 remains in the support leg box 12 in its fully extended position. Typically, this "residual length" is about 20 to 30% of the extension length.
- the second load application device 32 can be designed as one or more continuous recesses provided for this purpose in the wall (web plates 54 and/or bottom flange 52) of the support leg box (see, for example, Figures 6 and 9).
- the second load application device 32 can be designed in this way be that its support surface 34 protrudes from a surface of the lower belt, as can be seen in particular from Figures 6, 8 and 9.
- This overhang or this "elevation" serves to prevent the support leg from moving into the retracted position may rest on areas of the lower chord that are not designed for load transfer (the invention deliberately refrains from t on the design of further load transfer points in the support leg box).
- the described increase hung depending on the dimensions (especially the length) of the support leg about 20 to 50 mm. The person skilled in the art will readily select a suitable increase within the scope of his or her professional ability.
- the position of the support point formed by the second load introduction device 32 is determined, as already described, at a distance in the longitudinal direction 22 from the front side 16 of the support leg box.
- the second load introduction device 32 can, for example, have a support surface 34 extending transversely (perpendicularly or at an angle not equal to 90° or less than 90°) to the longitudinal direction 22 .
- the second load introduction device 32 can have a plurality of support surfaces 34 arranged at the given distance from the front on the circumference of the support leg box on its lower flange 52 and/or its web plates 54 .
- the second load introduction device 32 can be designed as an essentially U-shaped bracket which is open at the top and has a base 46 and from the base 46 free legs 48 protruding upwards (cf., for example, FIG. 6).
- the top of the base 46 forms the support surface 34.
- the base 46 of the bracket can - as shown in FIG As can be seen in FIG. 6, reach through the bottom chord 52 of the support leg box.
- the support structure 10 further comprises, according to the invention, in the support leg 20 a reinforcement element 36 which extends essentially over the length L of the support leg 20.
- the reinforcement element 36 is intended to rest on the support surface 34 of the only second Load application device 32 forms out.
- the reinforcing element 36 can be formed in a variety of ways.
- the amplification element 36 can be formed by a reinforcement plate of the lower chord 62 extending over substantially the entire length of the support leg 20 .
- the reinforcing element 36 can be formed by two reinforcing strips extending along the respective abutting edges of the web plates 64 with the lower chord 62 .
- the reinforcement element 36 can be formed by suitable material reinforcements or material extensions of the web plates 64 in the area of the connection to the lower flange 62, as illustrated in FIG. 9, for example.
- the reinforcing element 36 can also be formed by suitable material reinforcements or material expansions of the lower part 62 in the region of the connection to the web plates 64 .
- the configuration of the reinforcing element 36 as extending substantially over the entire length of the support leg 20 gives the invention a high degree of the desired flexibility, since now any pull-out position of the support leg 20 with always guaranteed load transfer line down over the single second load introduction device 32 is made possible.
- the supporting leg 20 also has, in the region of its upper chord 60, an upper chord reinforcement which extends essentially over the entire length of the supporting leg 20. What was said above in connection with the reinforcement element 36 applies to the configuration of the upper belt reinforcement.
- each have a reinforcing pin with support surface 34 may be provided.
- the reinforcement pins can, but do not have to, be arranged at the same height (in principle, the two pins can be arranged at different heights, then the longitudinally extending reinforcements on the left and right of the support leg must also be arranged at different heights).
- the second load introduction device 32 is designed in several parts.
- the reinforcement pins of the second load introduction device 32 can each be inserted and welded into the continuous recesses provided for this purpose in the web plate.
- the second load introduction device 32 can be designed to be essentially flush with the web plate 54, while it protrudes sufficiently far inwards in the support leg box to form a suitable support surface 34.
- configurations are also possible, please include in which, due to structural conditions, the front side 16 of the support leg box does not run perpendicular to the longitudinal axis of the support leg (ie the longitudinal direction 22). This can result in the first (upper) load introduction device running "obliquely" to the support leg (i.e. at an angle other than 90° to the longitudinal direction 22, in particular an angle of less than 90°, e.g. between 0° and 60°).
- the support surface formed by the second load application device (either from an element as in the first embodiment or from two elements as in the second embodiment) is substantially perpendicular to the support leg longitudinal axis; then the distances of the support surface are different on the left and right of the side surfaces (webs) of the support leg.
- the "given distance D" is to be seen as the mean value, e.g.
- the support surface formed by the second load introduction device (either made of one element as in the first embodiment or of two elements as in the second version tion shape) also runs obliquely to the longitudinal axis of the support leg, either at the same angle as the first load application device or at a different angle; then the distances left and right can either be the same (same angle) or different (different angle). In this case, too, it makes sense to see the "given distance D" as the mean value, e.g. calculated along the central axis of the support arrangement.
- the essential aspect of the invention consists in the fact that exactly one load introduction device is provided inside the support leg box, which does not necessarily have to have the same orientation (in relation to the longitudinal direction) as the first load introduction device in its transverse extent (to the longitudinal axis of the leg) (i.e. runs obliquely to it).
- the reinforcement element 36 extending essentially over the length of the support leg is not formed in the area of the lower chord 62, but at a height on the web plates 64 of the support leg 20 which is adapted to the position of the described reinforcement pins of the second load introduction device 32.
- the level of the reinforcing element 36 upwards to de Can be extended in the area of the upper chord 60 and thus additionally fulfill the function of the upper chord reinforcement described above.
- FIG. 14a, 14b and 14d illustrate alternative configurations of the supporting leg hollow profile with reinforcement elements 36 inserted or attached (in recesses provided for this purpose or in a space between the two stacked U-profiles).
- the hollow body can thus be constructed in two parts, for example.
- FIGS. 14a and 14b show a variant with two essentially U-shaped edge profiles which are assembled and welded with their openings pointing to one another with the legs (to form the webs or web plates).
- a plate is welded onto an upright U-profile as a top chord.
- the invention extends not only to one-piece support legs 20, as described in connection with the schematic representations of Figures 2 and 3, but also to multi-part pull-out support legs, in particular telescopic legs. Such configurations are shown analogously to FIGS. 2 and 3 in FIGS. 4 and 5, respectively.
- FIGS. 4 and 5 show configurations with 2-part telescopic legs made from an extendable leg guided in a telescopic box, with the telescopic box in turn being slidably mounted in the support leg box.
- the hollow body 24 of the previous support leg now serves as a telescopic box 20.1 for receiving an extendable leg 20.2 with a smaller cross-section that is mounted so as to be displaceable in the longitudinal direction.
- the exemplary embodiment in FIG. 9 shows a variant that makes use of the first embodiment according to FIG. 2 between the support leg box 12 and the telescopic box 20.1, while one from the prior art is used for the load dissipation between the extendable leg 20.2 and the telescopic box 20.1 (cf. e.g. DE 102014 014 038 A1) is used.
- the material thickenings in the transition area between the web plates 64.1 and the lower flange 62.1 of the telescopic box 20.1 that form the reinforcing element 36 that extends over the length L of the support leg also serve inward as support surfaces for webs 66 of the web plates 64.2 of the extension leg 20.2 that are extended downwards .
- FIG. 10 shows a telescopic leg variant of the embodiment of FIG. 3 with a support leg box 12, a telescope box 20.1 mounted therein so that it can slide in the longitudinal direction, and an extendable leg 20.2 mounted so that it can slide in the longitudinal direction in the telescopic box 20.1.
- the support leg box 12 has a second load introduction device 32 in the web plates 54 .
- a clasp 33 extending over the height of the web plate 54 can also be provided on the outside of the web plate 54, which is supported on overhangs of the upper flange and the lower flange and serves to improve the force dissipation.
- the telescopic box 20.1 has a reinforcement element 36.1 that extends essentially over its length and is formed by "rails" (so-called double web plates) applied to both sides of the web plates 64.1, which are used to rest on the support surfaces 34 of the second load introduction device 32
- the height of the rails forming the reinforcement element 36.1 extends upwards to the overhangs 61.1 of the upper chord 60.1, to which they are welded (cf. also the illustration in FIG. 12). 3 described dual function of increasing the force dissipation both compared to the first load application device 30 and the second load application device 32.
- Support surfaces 34 'of the second load application device 32' are formed.
- the rails forming the reinforcing element 36.2 extend upwards to the overhangs 61.2 of the upper chord 60.2, to which they are welded (cf. also the illustration in FIG. 12).
- a single load application point is provided in the support leg box, with the result that only one load application has to be calculated, which greatly reduces the calculation effort for the support leg box.
- Support leg box means a force flow direction independent of the leg position (regardless of the leg position, the same front and rear two load application points are always used, in contrast to DE 102014 014 038 A1), so that there are only very few parts or areas through which force flows .
- the fact that reinforcement is only necessary at one point has a favorable effect on the cost and weight of the construction.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023555591A JP2024511576A (ja) | 2021-03-18 | 2022-03-16 | 支持構造体 |
KR1020237032031A KR20230157982A (ko) | 2021-03-18 | 2022-03-16 | 지지 구조물 |
CN202280032333.5A CN117295678A (zh) | 2021-03-18 | 2022-03-16 | 支撑结构 |
EP22714447.4A EP4263412A1 (de) | 2021-03-18 | 2022-03-16 | Stützkonstruktion |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021106729.4A DE102021106729A1 (de) | 2021-03-18 | 2021-03-18 | Stützkonstruktion |
DE102021106729.4 | 2021-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022194935A1 true WO2022194935A1 (de) | 2022-09-22 |
Family
ID=81260127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/056832 WO2022194935A1 (de) | 2021-03-18 | 2022-03-16 | Stützkonstruktion |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP4263412A1 (de) |
JP (1) | JP2024511576A (de) |
KR (1) | KR20230157982A (de) |
CN (1) | CN117295678A (de) |
DE (1) | DE102021106729A1 (de) |
WO (1) | WO2022194935A1 (de) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA946790A (en) * | 1970-11-17 | 1974-05-07 | Fu-Tien Sung | Crane boom having wear pads |
JPS6028563U (ja) * | 1983-08-03 | 1985-02-26 | 株式会社神戸製鋼所 | アウトリガ装置 |
JPH10265177A (ja) * | 1997-03-21 | 1998-10-06 | Kobe Steel Ltd | アウトリガ装置 |
DE202004011443U1 (de) | 2004-07-21 | 2004-10-07 | Anton Ruthmann Gmbh & Co. Kg | Abstützvorrichtung für Traggestelle mit vorkragenden Lasten |
DE102004035416A1 (de) * | 2004-07-21 | 2006-02-16 | Anton Ruthmann Gmbh & Co. Kg | Abstützvorrichtung für Traggestelle mit vorkragenden Lasten |
DE102014014038A1 (de) | 2014-09-26 | 2016-03-31 | Putzmeister Engineering Gmbh | Stützbein und Stützkonstruktion für eine Arbeitsmaschine |
-
2021
- 2021-03-18 DE DE102021106729.4A patent/DE102021106729A1/de active Pending
-
2022
- 2022-03-16 EP EP22714447.4A patent/EP4263412A1/de active Pending
- 2022-03-16 CN CN202280032333.5A patent/CN117295678A/zh active Pending
- 2022-03-16 JP JP2023555591A patent/JP2024511576A/ja active Pending
- 2022-03-16 WO PCT/EP2022/056832 patent/WO2022194935A1/de active Application Filing
- 2022-03-16 KR KR1020237032031A patent/KR20230157982A/ko unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA946790A (en) * | 1970-11-17 | 1974-05-07 | Fu-Tien Sung | Crane boom having wear pads |
JPS6028563U (ja) * | 1983-08-03 | 1985-02-26 | 株式会社神戸製鋼所 | アウトリガ装置 |
JPH10265177A (ja) * | 1997-03-21 | 1998-10-06 | Kobe Steel Ltd | アウトリガ装置 |
DE202004011443U1 (de) | 2004-07-21 | 2004-10-07 | Anton Ruthmann Gmbh & Co. Kg | Abstützvorrichtung für Traggestelle mit vorkragenden Lasten |
DE102004035416A1 (de) * | 2004-07-21 | 2006-02-16 | Anton Ruthmann Gmbh & Co. Kg | Abstützvorrichtung für Traggestelle mit vorkragenden Lasten |
DE102014014038A1 (de) | 2014-09-26 | 2016-03-31 | Putzmeister Engineering Gmbh | Stützbein und Stützkonstruktion für eine Arbeitsmaschine |
Also Published As
Publication number | Publication date |
---|---|
DE102021106729A1 (de) | 2022-09-22 |
EP4263412A1 (de) | 2023-10-25 |
CN117295678A (zh) | 2023-12-26 |
KR20230157982A (ko) | 2023-11-17 |
JP2024511576A (ja) | 2024-03-14 |
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