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公开(公告)号：EP4414530A1
公开(公告)日：2024-08-14
申请号：EP23156038.4
申请日：2023-02-10
发明人： VIITANIEMI, Jarno , PARKKINEN, Pertti , LESKINEN, Martti , HÄMÄLÄINEN, Mikko , KOIVUMÄKI, Perttu , KELA, Timo , KOHOLA, Ville
CPC分类号： E21B1/26 , E02F9/226 , E02F9/2217 , E02F3/966 , B25D9/145
摘要： An arrangement and method for heating an impact device (9) of a rock treating machine (Rtm) in low-temperature operating conditions. The arrangement comprises a warm-up mode (WM) for feeding pre-heated hydraulic fluid through a feed channel (19) to a hydraulic circuit (18) of the impact device. There are one or more hydraulic accumulators (Pa) in the hydraulic circuit. The feed channel is provided with a control element (CE) for limiting the feeding of the pre-heated hydraulic fluid during the warm-up mode. The control element limits the feeding of the pre-heated hydraulic fluid in the feed channel so that separating elements (Se) of the pressure accumulators do not move.
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52.发明授权
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公开(公告)号：EP4052854A1
公开(公告)日：2022-09-07
申请号：EP22158565.6
申请日：2022-02-24
申请人： Montabert
摘要： Le perforateur hydraulique roto-percutant comprend un corps; un emmanchement (15) ; un piston de frappe (5) configuré pour frapper l'emmanchement (15) ; un piston de butée (13) configuré pour positionner l'emmanchement (15) dans une position d'équilibre prédéterminée, le corps et le piston de butée (13) délimitant une première chambre de commande (22) reliée de façon permanente à un conduit d'alimentation en fluide à haute pression (9) et configurée pour solliciter le piston de butée (13) vers l'avant, et une deuxième chambre de commande (25) configurée pour solliciter le piston de butée (13) vers l'avant. Le perforateur hydraulique roto-percutant (2) comprend un canal de communication fluidique (26) débouchant dans la deuxième chambre de commande (25), configuré pour alimenter la deuxième chambre de commande (25) en fluide à haute pression et pourvu d'un orifice calibré (27).
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公开(公告)号：EP3889388A1
公开(公告)日：2021-10-06
申请号：EP20166668.2
申请日：2020-03-30
发明人： ANTTILA, Erkki
IPC分类号： E21B1/26 , E21B4/14 , E21C27/12 , E21C27/28 , B25D9/00 , B25D17/24 , B25D17/26 , E02F3/96 , E02F5/30 , E21B6/00 , E21B7/02
摘要： A hydraulic rock breaking machine and an apparatus and method for monitoring operation of same. The apparatus comprises at least one pneumatic sensor (S) for monitoring an inner space of the machine (10) and at least one control unit (CU) configured to receive and process the pneumatic sensing data.
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公开(公告)号：EP3395504A1
公开(公告)日：2018-10-31
申请号：EP16878682.0
申请日：2016-12-20
发明人： KANEKO Tsutomu , KOIZUMI Masahiro , MATSUDA Toshio
摘要： To provide a hydraulic hammering device capable of sufficiently transmitting blow energy to bedrock while further strengthening the cushioning action and suppressing damage to equipment. A hydraulic hammering device including: a pushing piston (4) disposed immediately behind a transmission member (2) and having a smaller propulsive force than that of a device main body (1); a damping piston (5) positioned behind the pushing piston (4), disposed to slide reciprocally against the pushing piston in forward and backward directions, and having a greater propulsive force than that of the device main body (1); a direction-restrictor (8, 9) provided in a high-pressure circuit (6) between a pushing chamber (41) and a damping chamber (51), to which hydraulic fluid is supplied for providing the pistons (4, 5) with propulsive forces, and the fluid supply source (P), the direction restrictor restricting a outflow from the chambers (41, 51) side to the fluid supply source (P) side while allowing a hydraulic fluid inflow from the fluid supply source (P) side to the chambers (41, 51) side and the pushing chamber side; and a throttle (10) provided in a drain circuit (7) that discharges a leakage of hydraulic fluid from a sliding contact location to a tank (T).
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公开(公告)号：EP3323564A1
公开(公告)日：2018-05-23
申请号：EP16824380.6
申请日：2016-07-07
发明人： KOIZUMI Masahiro
摘要： To improve hammering power by shortening a piston stroke, while keeping its hammering energy. The hydraulic hammering device including: a cylinder (100); a piston (200) slidingly fitted in the cylinder (100); a piston front chamber (110) and a piston rear chamber (111) which are defined between an outer circumferential surface of the piston (200) and an inner circumferential surface of the cylinder (100) and disposed separately from each other at front and rear, respectively, in an axial direction; a switching-valve mechanism (130) driving the piston by switching at least one of the piston front chamber (110) and the piston rear chamber (111) into communication with at least one of a high pressure circuit (101) and a low pressure circuit (102); and an acceleration piston (410) as an urging means, which is disposed behind the piston (200) and comes in contact with the piston (200) during a retreat stroke of the piston (200), to urge the piston (200) forward in cooperation with braking force by pressurized oil acting on the piston (200).
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公开(公告)号：EP3085880A4
公开(公告)日：2017-08-23
申请号：EP13899510
申请日：2013-12-18
申请人： NIPPON PNEUMATIC MFG
发明人： MORITA YUUJI , TAN SEIICHIRO
CPC分类号： B25D9/18 , B25D9/26 , B25D2250/131 , E21B1/00 , E21B4/06
摘要： The impact-driven tool of the present invention includes a cylinder and a piston slidably inserted into the cylinder and having a large-diameter portion. The cylinder includes: a chamber on one end side that is a space defined by an outer surface of the piston located more on the one end side in the axial direction than the large-diameter portion of the piston and an inner surface of the cylinder; a chamber on the other end side that is a space defined by an outer surface of the piston located more on the other end side in the axial direction than the large-diameter portion of the piston and an inner surface of the cylinder; a communication path that allows the chamber on one end side and the chamber on the other end side to communicate with each other; and a valve chamber that is continuous with one end side in the axial direction of the communication path, and a valve body for piston lifting control that is incorporated so as to be movable up and down is provided in the valve chamber. The communication path is opened and closed by the valve body, thereby enabling the reduction in diameter and length of the valve body, so that the conduits of the hydraulic oil are maintained while the weight of the valve body is reduced.
摘要翻译： 本发明的冲击工具包括气缸和可滑动地插入气缸并具有大直径部分的活塞。 所述气缸包括：位于一端侧的腔室，所述腔室是由位于比所述活塞的大直径部分和所述气缸的内表面更靠轴向一端侧的所述活塞的外表面限定的空间; 位于另一端侧的腔室，该腔室是由位于比活塞的大直径部分和缸体的内表面更靠轴向另一端侧的活塞的外表面限定的空间; 连通路径，其使一端侧的腔室与另一端侧的腔室连通; 以及与连通路径的轴向的一端侧连续的阀室，在阀室内设置有能够上下移动地组装的活塞升降控制用阀体。 连通路径由阀体打开和关闭，由此能够减小阀体的直径和长度，使得在减小阀体的重量的同时维持液压油的导管。
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公开(公告)号：EP3085880A1
公开(公告)日：2016-10-26
申请号：EP13899510.5
申请日：2013-12-18
发明人： MORITA, Yuuji , TAN, Seiichiro
CPC分类号： B25D9/18 , B25D9/26 , B25D2250/131 , E21B1/00 , E21B4/06
摘要： The impact-driven tool of the present invention includes a cylinder and a piston slidably inserted into the cylinder and having a large-diameter portion. The cylinder includes: a chamber on one end side that is a space defined by an outer surface of the piston located more on the one end side in the axial direction than the large-diameter portion of the piston and an inner surface of the cylinder; a chamber on the other end side that is a space defined by an outer surface of the piston located more on the other end side in the axial direction than the large-diameter portion of the piston and an inner surface of the cylinder; a communication path that allows the chamber on one end side and the chamber on the other end side to communicate with each other; and a valve chamber that is continuous with one end side in the axial direction of the communication path, and a valve body for piston lifting control that is incorporated so as to be movable up and down is provided in the valve chamber. The communication path is opened and closed by the valve body, thereby enabling the reduction in diameter and length of the valve body, so that the conduits of the hydraulic oil are maintained while the weight of the valve body is reduced.
摘要翻译： 本发明的冲击驱动工具包括可滑动地插入到气缸中并且具有大直径部分的气缸和活塞。 气缸包括：在一端侧的腔室，其是由位于活塞的大直径部分的轴向上的一端侧的活塞的外表面和气缸的内表面限定的空间; 在另一端侧的室，其是由活塞的外表面在轴向上的另一端侧比活塞的大直径部分和气缸的内表面限定的空间; 连通路径，其允许一端侧的腔室和另一端侧的腔室相互连通; 以及与所述连通路径的轴向的一端侧连续的阀室，并且在所述阀室中设置有用于上下移动的用于活塞提升控制的阀体。 连通路径由阀体打开和关闭，从而能够减小阀体的直径和长度，从而在阀体的重量减小的同时保持液压油的导管。
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