EP4357541B1 - Machine de construction et procédé de fabrication d'une machine de construction - Google Patents

Machine de construction et procédé de fabrication d'une machine de construction

Info

Publication number
EP4357541B1
EP4357541B1 EP22202499.4A EP22202499A EP4357541B1 EP 4357541 B1 EP4357541 B1 EP 4357541B1 EP 22202499 A EP22202499 A EP 22202499A EP 4357541 B1 EP4357541 B1 EP 4357541B1
Authority
EP
European Patent Office
Prior art keywords
construction machine
upper structure
additional module
module
electric motor
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.)
Active
Application number
EP22202499.4A
Other languages
German (de)
English (en)
Other versions
EP4357541C0 (fr
EP4357541A1 (fr
Inventor
Bernhard Lindermair
Matthias Sähn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP22202499.4A priority Critical patent/EP4357541B1/fr
Publication of EP4357541A1 publication Critical patent/EP4357541A1/fr
Application granted granted Critical
Publication of EP4357541C0 publication Critical patent/EP4357541C0/fr
Publication of EP4357541B1 publication Critical patent/EP4357541B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/2075—Control of propulsion units of the hybrid type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/18—Counterweights

Definitions

  • the invention relates to a construction machine, in particular a civil engineering machine, comprising an undercarriage with a chassis, a superstructure rotatably mounted on the undercarriage about a vertical axis, at least one internal combustion engine arranged in the superstructure, and a distribution gearbox arranged in the superstructure and comprising a first drive shaft to which the internal combustion engine is connected in order to transmit and distribute a torque of the internal combustion engine to machine components, according to the preamble of claim 1.
  • the invention further relates to a method for manufacturing a construction machine with a hybrid drive arrangement, wherein the construction machine is formed with an undercarriage with a chassis, a superstructure rotatably mounted on the undercarriage about a vertical axis, at least one internal combustion engine arranged in the superstructure, and a distribution gearbox arranged in the superstructure and having a first drive shaft to which the internal combustion engine is connected in order to transmit and distribute a torque of the internal combustion engine to machine components, according to the preamble of claim 12.
  • construction machinery is still generally equipped with an internal combustion engine, particularly a diesel engine.
  • an internal combustion engine is no longer permitted, or only permitted to a limited extent, in certain areas and on certain construction sites due to existing environmental regulations, especially regarding exhaust fumes and/or noise emissions.
  • a hybrid drive system which, in addition to an internal combustion engine, also includes at least one electric motor.
  • Such an electric motor is typically mounted in an existing superstructure in a space adjacent to the transfer case, to which the internal combustion engine is also connected.
  • the transfer case can thus accept torque from the electric motor as an alternative to, and/or supplement to, the torque of the internal combustion engine.
  • the electric motor is usually powered via an electrical cable from an external power source.
  • the superstructure of the construction machine must also incorporate the necessary power and control components for operating the electric motor.
  • these power and control components for operating the at least one electric motor into the existing electronic switching and control units, or to distribute these components across the superstructure in available space and connect them to the electric motor and other existing electrical power and control units via appropriate cables running through the superstructure.
  • such construction machines may have a completely unique distribution of the various components to create space for the additional power and control components.
  • the printed matter JP 2015 183483 A discloses a hybrid construction machine which exhibits the features from the preamble of claim 1.
  • the invention is based on the objective of providing a construction machine and a method for manufacturing a construction machine with which a construction machine with a hybrid drive system can be created in a particularly economical manner.
  • the construction machine according to the invention is characterized in that power and control components for operating the at least one electric motor are arranged on a modular frame, wherein an additional module is formed, and that the additional module can be detachably attached to a rear of the superstructure when the construction machine is designed with the hybrid drive arrangement.
  • a fundamental aspect of the invention is to design a construction machine with an internal combustion engine in such a way that the machine can still be efficiently manufactured as a standard internal combustion engine machine, but can also be produced with an electric motor and thus a hybrid drive system if desired by the customer.
  • This is achieved by arranging a distribution gearbox in the upper structure of the construction machine, which has a first drive shaft for the internal combustion engine and a second drive shaft for connecting at least one electric motor.
  • the distribution gearbox with the at least two drive shafts is preferably installed regardless of whether an electric motor is required for a hybrid drive system. This simplifies manufacturing and reduces inventory, as only one distribution gearbox is needed for two different types of construction machines.
  • Another aspect of the invention is that the power and control components necessary for operating the at least one electric motor for a hybrid drive arrangement are no longer installed in the superstructure itself, but are combined in an additional module.
  • the additional module has its own module frame, which supports the power and control components.
  • the additional module is designed to be attached to the rear of the superstructure.
  • the main difference compared to manufacturing a conventional construction machine is the installation of an additional electric motor in the superstructure. Since the transfer case is already designed to accommodate an electric motor, this is easily accomplished. Furthermore, the installation and integration of the power and control components required for operating the electric motor are significantly simplified, as these are combined in an additional module that can be manufactured and prepared separately. This additional module can be relatively easily attached to the rear of the superstructure during the production of the hybrid construction machine. Pre-wired connections and plugs can preferably be provided for the necessary cable connections.
  • the upper structure includes a receiving space for at least one electric motor to form the hybrid drive arrangement. If the construction machine is manufactured simply as a conventional construction machine with an internal combustion engine, the receiving space generally remains unused.
  • the construction machine according to the invention is thus designed so that, during the manufacture of a new machine, it can be easily configured either as a conventional construction machine with only one internal combustion engine or as a hybrid construction machine with a hybrid drive arrangement without major modifications to the manufacturing process.
  • a suitably prepared construction machine with an internal combustion engine can also be retrofitted at a later date with relatively limited effort by installing at least one electric motor and attaching a corresponding additional module.
  • the power and control components of the add-on module can include various components necessary for supplying and operating an electric motor on a construction machine. These can include, in particular, DC and AC inverter units as well as components for current and voltage adaptation. This is necessary, in particular, to adapt the voltage and current supplied externally to the requirements of the electric motor.
  • the necessary power electronics and cooling devices for the components are also preferably arranged on the additional module.
  • the additional module has a connection for a power line for supplying electrical current from an external power source to operate the at least one electric motor.
  • the external power source can be a direct current source or an alternating current or three-phase current source.
  • the power and control components are designed to convert and transform the supplied electrical energy in a manner suitable for operating the electric motor.
  • auxiliary module being designed in a box-like form with a height and width adapted to the height and width of the superstructure.
  • the auxiliary module can thus be mounted almost flush with the rear of the superstructure.
  • the auxiliary module can therefore be integrated into the overall design of the construction machine, so that it is not perceived as disruptive.
  • a box-like design also allows for simplified manufacturing and maintenance of the auxiliary module. Additionally, if the electronic components are changed, the entire auxiliary module can be replaced, thus enabling possible adjustments and improved performance programs for the electric motor on the construction machine.
  • the add-on module includes a cooling device for cooling the power and control components.
  • a cooling device for cooling the power and control components.
  • Components for transforming electrical energy, as well as electronic control units, can generate a considerable amount of heat, which is hardly economical to dissipate when installed in the superstructure itself.
  • the cooling system prefferably has at least one fan, which is positioned at an opening of the add-on module to the outside. This allows for efficient cooling of the components within the add-on module's housing, while heat can be easily dissipated to the environment.
  • particularly efficient cooling can be achieved by designing the cooling device with at least one coolant circuit, wherein coolant is circulated between at least one component of the power and control components and a heat exchanger by means of at least one pump.
  • the at least one fan can be arranged in the area of the at least one heat exchanger in order to ensure efficient heat dissipation from the cooling circuit to the outside.
  • Another preferred embodiment of the invention consists in the superstructure having a support frame, wherein a first connecting device is arranged and configured at the rear of the superstructure to interact with a suitable second connecting device for attaching counterweight elements to the rear and/or the auxiliary module.
  • the rear of the superstructure is equipped with a connecting device that allows counterweight elements to be detachably attached for tip-proof operation.
  • the auxiliary module is equipped with a corresponding connecting device so that it can be attached to the existing connecting device for attaching counterweight elements. This simplifies the attachment of the auxiliary module.
  • the auxiliary module can also function as a counterweight element.
  • a particular advantage is that a second connection device for attaching the add-on module to the superstructure is provided on one front side, and that a further connection device is arranged on the rear side of the add-on module on the module frame, which is designed for attaching counterweight elements to the add-on module.
  • a further connection device is arranged on the rear side of the add-on module on the module frame, which is designed for attaching counterweight elements to the add-on module.
  • additional counterweight elements can be attached to the rear of the add-on module on the module frame if required.
  • the add-on module has a corresponding connection device on its rear side.
  • a further connecting device for attaching counterweight elements is provided, which may preferably be identical or similar to the first connecting device for attaching counterweight elements to the superstructure. In this arrangement, the additional module is thus positioned between the superstructure on the one hand and further counterweight elements on the other.
  • the construction machine can be designed in any suitable way, particularly as a civil engineering machine. It is especially preferred that a mast, a boom, or a jib arm is arranged on the superstructure, particularly at its front. In this arrangement, an additional module generally serves as a counterweight, thus increasing the stability and rollover resistance of the construction machine.
  • a particularly advantageous embodiment of the invention is one in which the construction machine is configured as a drilling rig, a milling device, a grab device, a vibrator, a pile driver, a grab excavator, or a cable excavator.
  • a drilling drive can be slidably arranged along a mast to drive a drill string with a drilling tool in a rotating manner and drive it into the ground.
  • a diaphragm wall cutter, a diaphragm wall grab, a vibrator, or a pile driver can be arranged on a mast or boom arm for carrying out a civil engineering project.
  • a grab excavator a grab can be attached to a boom arm.
  • a pile driver can include a vibratory vibrator or a diesel or hydraulic hammer and can be configured, in particular, for driving or extracting planks or piles.
  • the method according to the invention is characterized in that at least one electric motor is arranged, which is connected to a second drive shaft of the distribution gearbox to form the hybrid drive arrangement, that line and control components for operating the electric motor are arranged on a module frame, whereby an additional module is formed, and that the additional module is detachably attached to a rear of the superstructure to form the hybrid drive arrangement.
  • inventive method can be used, in particular, to manufacture a construction machine according to the invention, as specified in the claims and/or described above.
  • advantages described in each case result from this.
  • a preferred embodiment of the invention consists in arranging at least one electric motor in a receiving compartment within the superstructure.
  • the electric motor can be connected in parallel to the internal combustion engine on the second drive shaft of the transfer case. This readily enables alternating operation using either a conventional internal combustion engine or the at least one electric motor.
  • Another advantageous embodiment of the method according to the invention consists in the fact that the additional module is attached to a first connecting device at the rear of the superstructure with a second connecting device which is arranged at the front of the additional module. This allows for simple attachment and detachment by means of a coupling-like connecting device.
  • the first connecting device is also designed for attaching counterweight elements, with a further first connecting device, also designed for attaching counterweight elements, being arranged on the rear side of the additional module.
  • the existing connecting device for attaching counterweight elements can thus be used to attach the additional module. This further reduces manufacturing effort.
  • FIG. 1 Figure 10 shows a construction machine with a crawler undercarriage 12.
  • a box-shaped superstructure 14 with an operator's cabin is rotatably mounted on the superstructure 12 about a vertical axis.
  • a mast 20 can be movably arranged on one front side of the superstructure 14 via a generally known linkage mechanism 19.
  • the mast 20 is designed as a telescopic mast.
  • a working device 22 is movably mounted on one front side of the mast 20 for carrying out a construction process.
  • the working device 22 is designed as a so-called vibrator, with which sheet piles can be vibrated or driven into the ground or pulled out again.
  • an additional module 40 for a hybrid drive arrangement is attached to a rear of the superstructure 14, which is opposite the front with the mast 20.
  • counterweight elements 26 are attached to the rear of the additional module 40, which faces away from the superstructure 14.
  • the additional module 40 is provided with a cover 43, which is preferably adapted to the superstructure 14 and its cover with regard to its dimensions and design.
  • a possible detachable attachment of the additional module 40 with a module frame 42 to a superstructure 14 is shown in the Figures 3 and 4 This clarifies the fact that the upper structure 14, only partially depicted, is shown without fairing and internal components.
  • a scaffold-like support frame 16 is shown.
  • a first connecting device 18, shown only schematically, is arranged at the rear of the superstructure 14. This device can interact with a corresponding second connecting device 48 on the front of the auxiliary module 40 to connect and fasten the auxiliary module 40.
  • a further connecting device 47 can be arranged on the module frame 42 of the auxiliary module 40 at a rear of the module 40 facing away from the superstructure 14. This connecting device 47 is preferably designed in accordance with the first connecting device 18 on the superstructure 14 and serves to connect and hold counterweight elements 26, as illustrated in Fig. 4 is shown.
  • ballast weights 26 can either be attached directly to the superstructure 14 by means of the first connecting device 18 or, in the case of a design of the construction machine 10 with a hybrid drive arrangement, to the rear of the additional module 40 by means of the further connecting device 47.
  • the additional module 40 preferably has a protruding connection 50 for connecting a power cable from an external power source. This connection 50 allows electrical power to be supplied to the additional module 40 during electrical operation of the construction machine 10.
  • FIG. 5 A possible configuration of an additional module 40 according to the invention for a hybrid drive is shown schematically in connection with the Figures 5 and 6 explained.
  • the additional module 40 with the module frame 42 is shown essentially without cladding. It is particularly noticeable that a further connecting device 47 for attaching counterweight elements 26 to the module frame 42 is arranged on the rear side of the additional module 40.
  • power and control components 30 are arranged on the module frame 42. These can include an AC PDU (AC Power Distribution Unit), which is connected in particular to terminal 50 for supplying electrical current from an external power source. Additionally, one or more OBCs (On-Board Chargers) and an inverter, as well as an HV PDU (High Voltage Power Distribution Unit), can be included as part of the power and control components 30. be arranged. A line can be routed via the inverter to the electric motor (not shown) in the upper carriage 14.
  • AC PDU AC Power Distribution Unit
  • OBCs On-Board Chargers
  • HV PDU High Voltage Power Distribution Unit
  • a cooling device 60 with a schematically indicated cooling circuit 64 can be arranged on the additional module 40.
  • a fan 62 can be mounted on a plate-shaped heat exchanger 68 in a side area of the additional module 40. Heat can be dissipated to the outside via an opening 46 in the housing 43 of the additional module 40 by means of the fan 62.
  • a fluid flow of cooling fluid is created by the pump 66 from the individual power and control components 30 to the heat exchanger 68. This ensures effective cooling and thus efficient operation of the power and control components 30 in the additional module 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Claims (15)

  1. Engin de chantier, notamment engin de génie civil, avec
    - une partie inférieure (12) avec un châssis,
    - une partie supérieure (14), qui est montée de manière rotative autour d'un axe vertical sur la partie inférieure (12),
    - au moins un moteur à combustion interne, qui est agencé dans la partie supérieure (14),
    - une boîte de répartition, qui est agencée dans la partie supérieure (14) et qui présente un premier arbre d'entraînement auquel est raccordé le moteur à combustion interne afin de transmettre et de répartir un couple du moteur à combustion interne sur des composants de l'engin,
    caractérisé en ce que
    - la boîte de répartition présente au moins un deuxième arbre d'entraînement qui est réalisé pour raccorder au moins un moteur électrique pour un agencement d'entraînement hybride,
    - en ce que des composants de puissance et de commande (30) destinés à faire fonctionner l'au moins un moteur électrique sont agencés sur un cadre modulaire (42), un module supplémentaire (40) étant formé, et
    - en ce que le module supplémentaire (40) peut être fixé au niveau d'un arrière de la partie supérieure (14) lors de la réalisation d'engin de chantier avec l'agencement d'entraînement hybride.
  2. Engin de chantier selon la revendication 1,
    caractérisé en ce qu'
    un espace de réception est réalisé dans la partie supérieure (14) pour recevoir au moins un moteur électrique afin de former l'agencement d'entraînement hybride.
  3. Engin de chantier selon la revendication 1 ou 2,
    caractérisé en ce qu'
    un raccordement (50) pour une ligne électrique est agencé sur le module supplémentaire (40) afin d'amener du courant électrique provenant d'une source de courant externe pour faire fonctionner l'au moins un moteur électrique.
  4. Engin de chantier selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    le module supplémentaire (40) est réalisé sous forme de caisson avec une hauteur et une largeur adaptées à une hauteur et une largeur de la partie supérieure (14).
  5. Engin de chantier selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    le module supplémentaire (40) présente un dispositif de refroidissement (60) pour refroidir les composants de puissance et de commande (30).
  6. Engin de chantier selon la revendication 5,
    caractérisé en ce que
    le dispositif de refroidissement (60) présente au moins un ventilateur (62) qui est agencé sur une ouverture (46) du module supplémentaire (40) vers le côté extérieur.
  7. Engin de chantier selon la revendication 5 ou 6,
    caractérisé en ce que
    le dispositif de refroidissement (60) est réalisé avec au moins un circuit de liquide de refroidissement (64), le liquide de refroidissement pouvant circuler entre au moins un composant des composants de puissance et de commande (30) et un échangeur de chaleur (68) au moyen d'au moins une pompe (66).
  8. Engin de chantier selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    la partie supérieure (14) présente un cadre porteur (16), un premier dispositif de liaison (18) étant agencé à l'arrière de la partie supérieure (14) et réalisé pour coopérer avec un deuxième dispositif de liaison (48) adapté pour fixer des éléments de contrepoids (26) à l'arrière et/ou le module supplémentaire (40).
  9. Engin de chantier selon la revendication 8,
    caractérisé en ce qu'
    un deuxième dispositif de liaison (48) est réalisé sur un côté avant du module supplémentaire (40) pour être fixé sur la partie supérieure (14) et
    en ce qu'un autre dispositif de liaison (47) est agencé sur un côté arrière du module supplémentaire (40) sur le cadre modulaire (42), qui est réalisé pour fixer des éléments de contrepoids (26) sur le module supplémentaire (40).
  10. Engin de chantier selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce qu'
    un poteau (20), un mât ou un bras de flèche est agencé sur la partie supérieure (14), notamment sur son côté avant.
  11. Engin de chantier selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    l'engin de chantier (10) est réalisé sous la forme d'un appareil de forage, d'un dispositif de fraisage, d'un dispositif de préhension, d'un vibrateur, d'un appareil de battage, d'une pelle à grappin ou d'une pelle à câbles.
  12. Procédé de fabrication ou de mise à niveau d'un engin de chantier (10), notamment selon l'une quelconque des revendications 1 à 11, avec un agencement d'entraînement hybride, l'engin de chantier (10) étant formé ou ayant été formé avec
    - une partie inférieure (12) avec un châssis,
    - une partie supérieure (14), qui est montée de manière rotative autour d'un axe vertical sur la partie inférieure (12),
    - au moins un moteur à combustion interne, qui est agencé dans la partie supérieure (14), et
    - une boîte de répartition, qui est agencée dans la partie supérieure (14) et présente un premier arbre d'entraînement auquel est raccordé le moteur à combustion interne afin de transmettre et de répartir un couple du moteur à combustion interne sur des composants de l'engin,
    caractérisé en ce qu'
    - au moins un moteur électrique est agencé, qui est raccordé à un deuxième arbre d'entraînement de la boîte de répartition pour former l'agencement d'entraînement hybride,
    - en ce que des composants de puissance et de commande (30) destinés à faire fonctionner le moteur électrique sont agencés sur un cadre modulaire (42), un module supplémentaire (40) étant formé, et
    - en ce que le module supplémentaire (40) est fixé de manière amovible au niveau d'un arrière de la partie supérieure (14) pour former l'agencement d'entraînement hybride.
  13. Procédé selon la revendication 12,
    caractérisé en ce qu'
    au moins un moteur électrique est agencé dans un espace de réception à l'intérieur de la partie supérieure (14).
  14. Procédé selon la revendication 12 ou 13,
    caractérisé en ce que
    le module supplémentaire (40) est fixé sur un premier dispositif de liaison (18) à l'arrière de la partie supérieure (14) avec un deuxième dispositif de liaison (48) qui est agencé sur un côté avant du module supplémentaire (40).
  15. Procédé selon la revendication 14,
    caractérisé en ce que
    le premier dispositif de liaison (18) est également réalisé pour fixer des poids de lestage (26), un autre dispositif de liaison (47) étant réalisé sur un côté arrière du module supplémentaire (40), lequel est réalisé pour fixer des poids de lestage (26).
EP22202499.4A 2022-10-19 2022-10-19 Machine de construction et procédé de fabrication d'une machine de construction Active EP4357541B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22202499.4A EP4357541B1 (fr) 2022-10-19 2022-10-19 Machine de construction et procédé de fabrication d'une machine de construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22202499.4A EP4357541B1 (fr) 2022-10-19 2022-10-19 Machine de construction et procédé de fabrication d'une machine de construction

Publications (3)

Publication Number Publication Date
EP4357541A1 EP4357541A1 (fr) 2024-04-24
EP4357541C0 EP4357541C0 (fr) 2026-01-28
EP4357541B1 true EP4357541B1 (fr) 2026-01-28

Family

ID=83900281

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
EP (1) EP4357541B1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007205097A (ja) * 2006-02-03 2007-08-16 Shin Caterpillar Mitsubishi Ltd 作業機械のカウンタウエイト
JP5004834B2 (ja) * 2008-03-13 2012-08-22 日立建機株式会社 作業機械
JP5163593B2 (ja) * 2009-05-25 2013-03-13 コベルコ建機株式会社 ハイブリッド作業機械
JP5307044B2 (ja) * 2010-01-18 2013-10-02 日立建機株式会社 建設機械の防振構造
JP6444038B2 (ja) * 2014-03-26 2018-12-26 住友重機械工業株式会社 ショベル

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Publication number Publication date
EP4357541C0 (fr) 2026-01-28
EP4357541A1 (fr) 2024-04-24

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