EP3735388A1 - Fahrzeugkran mit einer hydraulisch wippbaren hauptauslegerverlängerung - Google Patents
Fahrzeugkran mit einer hydraulisch wippbaren hauptauslegerverlängerungInfo
- Publication number
- EP3735388A1 EP3735388A1 EP19700133.2A EP19700133A EP3735388A1 EP 3735388 A1 EP3735388 A1 EP 3735388A1 EP 19700133 A EP19700133 A EP 19700133A EP 3735388 A1 EP3735388 A1 EP 3735388A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- hydraulic
- main boom
- space
- hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000010720 hydraulic oil Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000004804 winding Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003134 recirculating effect 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
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- 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
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
-
- 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
- B66C23/82—Luffing gear
Definitions
- the invention relates to a vehicle crane with a main boom and with a hinged to the main boom and tilted by means of at least one rocking cylinder main boom extension.
- the German Utility Model DE 20 2004 020 760 U1 discloses a mobile crane with a main boom, which consists of a base box and telescopic telescopic and telescopic shots therein.
- a main boom extension is articulated which is pivotable about a luffing axis by means of a luffing cylinder relative to the main boom.
- the luffing cylinder is in the usual way a hydraulic piston-cylinder unit.
- the luffing cylinder is supplied with hydraulic energy via a self-sufficient hydraulic power unit with a combustion engine which is arranged on the head of the main boom or particularly preferably on one foot of the main boom extension.
- Hydraulic unit must be taken with each adjustment of the main boom. Also, the maintenance and thus the costs to ensure adequate reliability of the high-level hydraulic unit are increased. Also, in this utility model already described, instead of a decentralized hydraulic unit to arrange a driven or spring-biased hose reel for hydraulic lines to supply the luffing cylinder to the base box or on a superstructure of the mobile crane. Because the
- Hose drum as a function of the length of the hydraulic line has a comparatively large diameter, this can adversely affect a height, in particular a transport height of the mobile crane.
- a height in particular a transport height of the mobile crane.
- the hose reel is removed and reassembled at the site, resulting in an increased assembly costs.
- the published patent application DE 24 06 57 A1 discloses a crane with a telescopic main boom and luffing jib.
- a hydraulic cylinder used for telescoping a cantilever foot of the luffing jib is described as "single acting". About a supply of hydraulic fluid to the hydraulic cylinder, no information is given.
- the document JP S63 46 465 also describes a main boom with a hydraulically tiltable luffing jib via a single-acting luffing cylinder.
- Hydraulic fluid reaches the luffing cylinder is open.
- the invention is therefore based on the object to provide a vehicle crane with a hydraulically tiltable main boom extension, the
- a vehicle crane with a main boom and with a hinged to the main boom and tilted by means of at least one rocking cylinder
- Rocker cylinder flows away, wherein the luffing cylinder is connected to the hydraulic hose with a single flow channel for supplying hydraulic fluid and the hydraulic hose is guided along the main boom.
- the principle of the present invention can be described as operating a conventional double-acting hydraulic differential cylinder predominantly to fully in the manner of a single acting hydraulic differential cylinder to achieve the goal of using two parallel ones
- Hydraulic hoses in particular of twin hoses, to dispense with hydraulic fluid for supplying the hydraulic cylinder.
- the simple hydraulic hose is to be understood as a hydraulic hose having only a flow channel for hydraulic fluid and thus seen in terms of time, the hydraulic fluid through the flow channel either to the
- Rocker cylinder flows or flows away from the luffing cylinder. It could also be said that the hydraulic fluid either flows exclusively through the flow channel to the luffing cylinder or flows away exclusively from the luffing cylinder and thus only in one of the two in terms of time
- the hydraulic hose has a round cross section, whereby in particular a winding of the hydraulic hose is simplified.
- the core idea of the present invention is thus to pressurize the luffing cylinder for rocking the main boom extension relative to the main boom via a flow channel with hydraulic fluid, in particular hydraulic oil, and for the return movement of the luffing cylinder predominantly the weight of the main boom extension or spring forces, in particular for angling from a steep 0 ° position of the main boom extension to use.
- the rocking cylinder can thus be connected to a hydraulic hose with a single flow channel for supplying hydraulic fluid.
- the hydraulic fluid flows back and forth in the hydraulic hose.
- Hydraulic hose is guided along the main boom, in particular via SchlauchTM- ments.
- the luffing cylinder on a rod space and a cylinder space wherein either only the rod space or only the cylinder space is connected to the hydraulic hose.
- the cylinder space or rod space not connected to the hydraulic hose is advantageously connected to the atmosphere without pressure.
- the rocking cylinder on a rod space and a cylinder chamber wherein either only the rod space or only the cylinder chamber is connected to the hydraulic hose and the cylinder chamber not connected to the hydraulic hose or
- Rod space with a pressure medium preferably with a gas, more preferably with nitrogen, is filled.
- a pressure medium next to gas or nitrogen on a cylinder side of the luffing cylinder to provide a hydraulic fluid, in particular hydraulic oil, which is then in communication with a gas storage.
- a mechanical spring on the cylinder side of the rocking cylinder is conceivable.
- the rocking cylinder is associated with a valve via which an outflow of the hydraulic fluid from the Wippzylin- and thus angling of the main boom extension is controllable.
- the luffing cylinder is designed as a pull cylinder or as a pressure cylinder.
- the rocking cylinder is acting unilaterally.
- hydraulic fluid can therefore be dispensed with a more expensive and therefore more expensive twin hose, which can twist during winding, whereby a Aufwickelradius is unintentionally increased.
- the rocking cylinder on a rod space and a cylinder space wherein the rod space and the cylinder chamber can be connected to the hydraulic hose.
- Rocking cylinders are assigned a switching valve and a bladder accumulator.
- the pressure surface on which a hydraulic fluid can act is increased relative to the pressure surface in the rod space around the engagement surface of a cylinder rod, so that consequently the cylinder chamber is charged with hydraulic fluid and hydraulic fluid is discharged from the rod chamber can flow out.
- the rod space can via the switching valve with the
- the rocking cylinder is acted upon in the manner of a unilaterally acting rocker cylinder via a single flow channel with hydraulic fluid.
- a complex and unfavorable twin tube can be dispensed with a complex and unfavorable twin tube.
- Telescopic cranes are characterized by the fact that the crane boom consists of several telescopically telescoping telescopic shots, whereas in a lattice boom crane, the boom consists of several rigidly interconnected lattice mast elements.
- a mobile crane is understood to be a mobile crane with a telescopic boom or a crawler crane with a lattice boom.
- the main cutter can be telescoped and consists of a base box and further telescopic shots which can be telescoped in and out.
- the hydraulic hose for supplying hydraulic power to the luffing cylinder can be unwound from or wound onto a hose reel during the first and second telescoping of the main jib.
- Hydraulic hose in several layers on the hose drum similar to a rope or cable drum side by side and one above the other wound up.
- the hose reel is arranged on the main boom, in particular on the base box.
- Dismantling for transport can be dispensed with.
- the vehicle crane has an undercarriage and a superstructure mounted rotatably thereon.
- An embodiment of the invention will be explained in more detail with reference to the following description.
- 1 shows a view of a mobile crane with a main boom and a main boom extension, each in a stored position and in an erected position, FIG.
- FIG. 2 shows a detailed view of the section Z marked in FIG. 1 from the region of the coupling of the main boom extension to the main boom
- FIG. 3 shows a schematic hydraulic circuit diagram with respect to the tilt cylinder
- FIG. 4 a shows a schematic hydraulic circuit diagram relating to the luffing cylinder with a bladder accumulator with a reversing valve in a first position
- FIG. 4b shows the hydraulic circuit diagram according to FIG. 4a with a change-over valve in a second position
- Figure 4c is a schematic hydraulic circuit diagram according to Figure 4a with a
- FIG. 4d shows a schematic hydraulic circuit diagram according to FIG. 4a with a
- FIG. 1 shows a mobile crane 1 with an undercarriage 2 with driver's cab and five drive axles and with a superstructure 3 mounted on the undercarriage 2 via a slewing connection with a telescopic main boom 4
- Main boom 4 is shown in a first almost horizontal stored position I and in a nearly vertical second position II.
- the main boom 4 is in the usual way via a hydraulic erection cylinder 16, which is supported on the uppercarriage 3 and the main boom 4, between the positions I and II teetering.
- the main boom 4 In the erected position II, the main boom 4 is shown in its fully telescoped condition.
- the main boom 4 is as a telescopic boom with a base box 6 and four in a known manner on and austeleskopier- bar arranged telescopic shots 7 to 10 and thus the mobile crane 1 as
- FIG. 1 shows the main boom extension 5 in a 0 ° -position, a 20 ° -position and a 40 ° -position. The degree refers to a Wippwinkel a between the main boom 4 and the main boom extension 5.
- main boom extension 5 is formed in a conventional manner, at least partially as a lattice boom in truss tube construction and has a subsequent thereto box top.
- the main boom extension 5 can also be configured overall as a lattice mast boom.
- the main boom extension 5 can be swiveled up and down about the rocking axis A oriented relative to the main boom 4 by means of a hydraulic rocker cylinder 14 substantially horizontally and parallel to a further rocking axis of the main dolly 4.
- a hydraulic hose 13 is provided, which is connected at one end to the luffing cylinder 14 and is guided along the main feeder 4 or the telescoping shots 7, 8, 9, 10 to a hose reel 12.
- the hose reel 12 is arranged on and laterally next to the base box 6.
- the hose reel 12 is mounted about a horizontal and parallel to the rocking axis A arranged axis of rotation D.
- the hose drum 12 is driven or spring-biased for winding and unwinding of the hydraulic hose 13. Between the luffing cylinder 14 and the hose reel 12, the hydraulic hose 13 is additionally connected via hose guides 15 along the
- Main boom 4 (see Figure 2) out.
- the hose guides 15 are respectively arranged at the upper ends or heads of the telescopic sections 7 to 10 (see Figure 2).
- FIG. 2 shows a detailed view of the section designated Z in FIG. 1 from the area of the coupling of the main boom extension 5 to the section
- Main boom 4 The main boom 4 and the main boom extension 5 are, however, in the horizontal stored position I, in which the telescopic shots 7 to 10 are not telescoped and the hydraulic hose 13 is completely wound on the hose reel 12. Also, the main boom extension 5 is aligned in extension to the main boom 4, ie the Rocking angle w is 0 °. To the main boom extension 5 against the
- Main boom 4 to be able to actively angle in both directions, at least one luffing cylinder 14 is disposed between the head 4a of the main boom 4 and the foot 5a of the main boom extension 5.
- the rocker cylinder 14 is bolted with its housing 14a on the head 4a of the main boom 4 and with its piston rod 14b on the foot 5a of the main boom extension 5.
- the illustrated rocking cylinder 14 is designed as a single-acting hydraulic cylinder and as a pull cylinder. Of course, a reverse installation of the rocking cylinder 14 is conceivable.
- the formation of the rocker cylinder 14 as a pressure cylinder instead of a pull cylinder is possible, in which case, however, is to make a different mechanical arrangement.
- On the housing 14a of the rocking cylinder 14, a hydraulic line 13a is connected, preferably in a
- This hydraulic line 13a is at its other end in the region of the head 4a of the main boom 4 to the
- Hydraulic hose 13 connected.
- the hydraulic hose 13 fastened in the region of the head 4a of the main feeder 4 is guided to the hose reel 12 via one hose guide 15 per telescopic weft 7, 8, 9, 10.
- Each hose guide 15 preferably consists essentially of two opposite ones
- the hose guides 15 are each arranged at the upper end of the telescopic shots 7, 8, 9, 10 or of the basic box 6.
- the luffing cylinder 14 is connected to a hydraulic hose 13 in such a way that the hydraulic fluid either flows towards the luffing cylinder 14 or flows away from the luffing cylinder 14, so that only one hydraulic supply line with a single flow channel is required. Therefore, the hydraulic hose 13 is not as a twin line, but only as
- This formed as a single line hydraulic hose 13 is multi-layered on the hose reel 12 and not only spiral and unwound.
- the hose reel 12 has for this purpose hose grooves and flanged wheels at the edges of the hose reel 12 to assist an orderly winding.
- the individual line of the hydraulic hose 13 thus runs next to one another in each position and in layers one above the other.
- the hydraulic hose 13 can be arranged in a multi-layered manner over one another be wound up.
- the multi-ply winding is made possible by special in the body of the hose reel milled cable grooves, which are partially parallel to the outer board and connected via so-called and about 120 ° to 180 ° offset intersections.
- the crossing areas ensure the required pitch per revolution of the drum and ensure a constant and pyramidal hose winding.
- FIG. 3 shows a schematic hydraulic circuit diagram with respect to FIG
- Hydraulic oil is supplied via the hydraulic hose 13 and the first hydraulic line 13 a with a valve 17.
- the hydraulic hose 13 which can be guided along the telescopic shots 7 to 10 (see FIGS. 1 and 2) and which is mounted on one
- Hose drum 12 is wound, is fed in the region of the hose drum 12 via a second hydraulic line 13b by means of a pump 19 from a container 21 with hydraulic fluid, in particular hydraulic oil.
- hydraulic fluid in particular hydraulic oil.
- a cylinder space 14d of the housing 14a can be depressurized in one embodiment in connection with the atmosphere.
- the cylinder space 14d is filled with gas, in particular nitrogen.
- an external gas reservoir 18 is connected to the cylinder chamber 14d.
- the gas reservoir 18 can also be designed as a bubble reservoir with gas filling, wherein hydraulic fluid, in particular hydraulic oil, is then present in the cylinder chamber 14d as a non-compressible pressure medium. Depending on the requirements, a gas filling in the cylinder chamber 14d without gas reservoir 18 may be sufficient.
- a piston rod 14b may additionally be made hollow. Then, the installation dimensions of the hydraulic cylinder 14 can be maintained.
- a mechanical spring is arranged in the cylinder space 14d or outside in the mechanism.
- Hydraulic oil provided via the hydraulic hose 13, wherein only the ring side is acted upon with oil. At the same time, the gas or hydraulic oil is compressed in the cylinder space 14d or atmospheric air is forced out. By closing the valve 17, the oil pressure can be maintained, if necessary, and thus the rocking angle w.
- the filling of the cylinder chamber 14d with compressed gas or pressurized hydraulic oil leads to a bias of the rocking cylinder 14, so that a faster teetering of the main boom extension 5 is possible. It is also advantageously possible, with the bias voltage and the oil pressure in the rod space 14c, to retract and extend the hydraulic cylinder 14 even without external forces, so that, for example, a bolting position can be approached during setup.
- the hose reel 12 is also possible to arrange the hose reel 12 on the uppercarriage 3. It can also be provided that the hydraulic line 13a is connected to a cylinder side of the rocking cylinder 14. Also, the
- Rocking cylinder 14 instead of as a pull cylinder operated as a pressure cylinder, in which case the rod space and the cylinder space are exchanged and the cylinder chamber are filled with hydraulic fluid and the rod space with pressure medium.
- the hydraulic hose 13 can be connected directly to the rocker cylinder 14 without the Hydrauliklei device 13 a.
- FIG. 4a shows a schematic hydraulic circuit diagram for the main boom 4 in the upright position II and the main boom extension 5 in the 0 ° position.
- a bladder accumulator 22 and a switching valve 23 are provided, and the first hydraulic line 13a is connected to the luffing cylinder 14 in a different manner.
- the first hydraulic line 13a is connected via the switching valve 23 with the
- Switching valve 23 and the bladder accumulator 22 and the hydraulic hose 13 is connected.
- the changeover valve 23 is in the position shown in FIG first position.
- the bladder accumulator 22 is filled with hydraulic fluid and decoupled from the hydraulic hose 13 and the first hydraulic line 13a.
- the standing under a system pressure of the hydraulic system hydraulic hose 13 is via the switching valve 23 and the first hydraulic line 13 a to the cylinder chamber 14 d and also to the
- the changeover valve 23 is moved to the second position, which is shown in the schematic hydraulic circuit diagram in Figure 4b.
- the main boom extension 5 is over her Dead weight or about a possible load on the main boom extension 5 further dergewippt.
- the switching valve 23 connects in the second position, the bladder accumulator 22 with the cylinder chamber 14 d, so that hydraulic fluid speed from the bladder accumulator 22 flows into the cylinder chamber 14 d.
- Rod chamber 14 c located hydraulic fluid flows out of the rod chamber 14 c out in the flow direction> via the valve 17 in the direction of the uppercarriage 3 or container 21.
- FIG. 4c A schematic hydraulic circuit diagram for the opposite process, namely a rocking of the main boom extension 5, is shown in Figure 4c.
- the rod space 14c is acted upon by the hydraulic hose 13 and the switching valve 23 in the third position in the flow direction ⁇ with hydraulic fluid.
- the rocking cylinder 14 operates against the own weight of the main boom extension 5.
- hydraulic fluid flows from the cylinder chamber 14 d into the bladder accumulator 22.
- FIG. 4d shows a schematic hydraulic circuit diagram for the end position after the main boom extension 5 has been rocked up. Cylinder space 14d and rod space 14c are not connected to the hydraulic hose 13 and the rocking cylinder 14 thus blocked.
- the changeover valve 23 connects the bladder accumulator 22 with the hydraulic hose 13. From the full bladder accumulator 22, only the amount of hydraulic fluid in the flow direction> is discharged in the direction of the container 21, which there due to the supply of hydraulic fluid shown in Figure 4a for the first luffing of the main boom extension 5 additionally is available.
- the switching valve 23 it is possible in a position, not shown, of the switching valve 23, for bending the main boom extension 5 by a small angle from a steep position, in particular the 0 ° -Steliung out, only the cylinder chamber 14 d to connect the hydraulic hose 13, or the hydraulic line 13 a ,
- the rod space 14c is connected to the bladder accumulator 22 in this embodiment.
- the hydraulic hose 13 is under a system pressure of the hydraulic system connected via the switching valve 23 and the first hydraulic line 13a to the cylinder chamber 14d.
- the cylinder chamber 14d is filled with hydraulic fluid and hydraulic fluid flows from the rod chamber 14c out into the bladder accumulator 22.
- the rocker cylinder 14 can also be used for equipping the vehicle crane 1 in a non-illustrated embodiment with a suitably adapted changeover valve 23.
- the luffing cylinder 14 executes only small aligning movements, in particular in the range from 0 to 100 mm, preferably from 0 to 50 mm, particularly preferably from 0 to 5 mm, without force. Without force in the present case means that
- Piston rod 14b or the housing of the rocking cylinder 14 is not hinged to the main boom extension 5 or at the foot of Hauptauslegerverinrung 5a, but is free to allow alignment of the rocking cylinder 14 prior to bolting with the main boom extension 5a.
- the piston rod 14b In order to extend or retract the piston rod 14b, the cylinder space 14d or the rod space 14c via the switching valve 23 with the
- Hydraulic hose 13 is brought into communication and acted upon with hydraulic fluid over it.
- the rod space 14c or cylinder chamber 14d filled with hydraulic fluid is connected to the bladder accumulator 22 via the reversing valve, so that the hydraulic fluid displaced from the rod chamber 14c or cylinder chamber 14d can flow into the bladder accumulator 22.
- Bladder accumulator 22 thus replaces the non-existent recirculating hydraulic line to a limited extent. Excess hydraulic fluid in the bladder accumulator 22 can via a suitable position of the switching valve 23, which the
- Bladder accumulator 22 connects to the hydraulic hose 13, via the hydraulic hose 13 to the container 21 to be drained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Jib Cranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202018100059.4U DE202018100059U1 (de) | 2018-01-05 | 2018-01-05 | Fahrzeugkran mit einer hydraulisch wippbaren Hauptauslegerverlängerung |
PCT/EP2019/050108 WO2019134943A1 (de) | 2018-01-05 | 2019-01-03 | Fahrzeugkran mit einer hydraulisch wippbaren hauptauslegerverlängerung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3735388A1 true EP3735388A1 (de) | 2020-11-11 |
EP3735388B1 EP3735388B1 (de) | 2021-07-21 |
Family
ID=61082593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19700133.2A Active EP3735388B1 (de) | 2018-01-05 | 2019-01-03 | Fahrzeugkran mit einer hydraulisch wippbaren hauptauslegerverlängerung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3735388B1 (de) |
DE (1) | DE202018100059U1 (de) |
WO (1) | WO2019134943A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019105971A1 (de) * | 2019-03-08 | 2020-09-10 | Liebherr-Werk Biberach Gmbh | Kran sowie Kabeltrommel hierfür |
JP2022084003A (ja) * | 2020-11-25 | 2022-06-06 | タダノ デマグ ゲーエムベーハー | 基本伸縮ジブおよび追加伸縮ジブを有する移動式クレーンの伸縮ジブシステム、および対応する方法 |
CN112225092B (zh) * | 2020-12-15 | 2021-08-24 | 新乡市奔象机械设备有限公司 | 一种汽车起重机自装卸式副臂安装机构 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE240657C (de) | 1909-02-08 | |||
JPS6345667A (ja) | 1987-08-10 | 1988-02-26 | Hitachi Ltd | マイクロプロセツサ |
DE9013488U1 (de) * | 1990-09-25 | 1990-12-06 | Liebherr-Werk Ehingen Gmbh, 7930 Ehingen | Fahrbarer Kran mit einem teleskopierbaren Ausleger |
WO2005021415A1 (de) | 2003-08-22 | 2005-03-10 | Terex-Demag Gmbh & Co. Kg | Mobilkranausleger mit daran angeordnetem autarken hydraulikaggregat |
DE202014006861U1 (de) * | 2013-08-23 | 2014-12-01 | Hohenloher Spezial-Maschinenbau GmbH & Co. KG | Arbeitsmaschine |
DE102013020542B4 (de) * | 2013-12-12 | 2016-06-16 | Tadano Faun Gmbh | Kran |
-
2018
- 2018-01-05 DE DE202018100059.4U patent/DE202018100059U1/de active Active
-
2019
- 2019-01-03 WO PCT/EP2019/050108 patent/WO2019134943A1/de active Search and Examination
- 2019-01-03 EP EP19700133.2A patent/EP3735388B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
EP3735388B1 (de) | 2021-07-21 |
DE202018100059U1 (de) | 2018-01-16 |
WO2019134943A1 (de) | 2019-07-11 |
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