专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20200181978A1 Two-Piston Hydraulic Striking Device 审中-公开
公开(公告)号：US20200181978A1
公开(公告)日：2020-06-11
申请号：US16313314
申请日：2017-06-22
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Masahiro Koizumi , Toshio Matsuda
IPC分类号： E21B1/00 , B25D9/12 , B25D9/26
摘要： Provided is a two-piston hydraulic striking device that has stable operatively. This two-piston hydraulic striking device includes two striking mechanisms for striking one transfer member. Each striking mechanism has a pressure receiving area ratio between the front and rear of a piston thereof set in such a way that the two striking mechanisms have the same cycle time.

2. 发明授权

US11072977B2 Two-piston hydraulic striking device 有权
公开(公告)号：US11072977B2
公开(公告)日：2021-07-27
申请号：US16313314
申请日：2017-06-22
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Masahiro Koizumi , Toshio Matsuda
IPC分类号： E21B1/00 , B25D9/12 , B25D9/26 , B25D9/14 , B25D9/18
摘要： Provided is a two-piston hydraulic striking device that has stable operativity. This two-piston hydraulic striking device includes two striking mechanisms for striking one transfer member. Each striking mechanism has a pressure receiving area ratio between the front and rear of a piston thereof set in such a way that the two striking mechanisms have the same cycle time.

3. 发明授权

US10150209B2 Hydraulic hammering device 有权
公开(公告)号：US10150209B2
公开(公告)日：2018-12-11
申请号：US15113645
申请日：2015-01-30
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Toshio Matsuda , Tsutomu Kaneko
IPC分类号： B25D9/14 , B25D9/18 , B25D9/20 , B25D9/26
摘要： Provided is a hydraulic hammering device having improved hammering efficiency and of low cost. A piston has a valve switching groove between large-diameter sections thereof. A cylinder has three control ports at positions corresponding to the valve switching groove. A switching valve mechanism has a valve presser for always pressing a valve in one direction and also has a valve controller for moving, when supplying pressurized oil, the valve in the opposite direction against the pressing force of the valve presser. A valve control port communicates with the valve controller so as to supply the pressurized oil to the valve controller and is separated from a piston front chamber and a piston rear chamber. Only either a piston retraction control port or a piston advance control port communicates with the valve control port depending on advance or retraction of the valve switching groove.

4. 发明申请

US20190210205A1 Hydraulic Hammering Device 审中-公开
公开(公告)号：US20190210205A1
公开(公告)日：2019-07-11
申请号：US16065325
申请日：2016-12-20
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Tsutomu Kaneko , Masahiro Koizumi , Toshio Matsuda
IPC分类号： B25D9/26 , B25D17/24 , E21B1/02 , E21C27/12
CPC分类号： B25D9/26 , B25D17/245 , B25D2217/0073 , B25D2222/72 , E21B1/02 , E21C27/12 , E21C27/122
摘要： A hydraulic hammering device is capable of sufficiently transmitting blow energy to bedrock while further strengthening cushioning action and suppressing damage to equipment. The device includes a pushing piston disposed behind a transmission member and having a smaller propulsive force than that of a main body, a damping piston positioned behind the pushing piston to slide reciprocally forwards and backwards and having a greater propulsive force than that of the main body, a direction-restrictor in a high-pressure circuit between pushing and damping chambers, to which hydraulic fluid is supplied for providing the pistons with propulsive forces, and a fluid supply source. The direction-restrictor restricts an outflow from the chambers side to the fluid supply source side while allowing fluid inflow from the fluid supply source side to the chambers and the pushing chamber sides. A throttle in a drain circuit discharges leaked fluid from a sliding contact location to a tank.

5. 发明申请

US20170001293A1 HYDRAULIC HAMMERING DEVICE 审中-公开
标题翻译：液压锤装置
公开(公告)号：US20170001293A1
公开(公告)日：2017-01-05
申请号：US15113645
申请日：2015-01-30
申请人： FURUKAWA ROCK DRILL CO., LTD.
发明人： Toshio Matsuda , Tsutomu Kaneko
IPC分类号： B25D9/14 , B25D9/18
CPC分类号： B25D9/145 , B25D9/18 , B25D9/20 , B25D9/26 , B25D2209/007 , B25D2250/125
摘要： Provided is a hydraulic hammering device having improved hammering efficiency and of low cost. A piston has a valve switching groove between large-diameter sections thereof. A cylinder has three control ports at positions corresponding to the valve switching groove. A switching valve mechanism has a valve presser for always pressing a valve in one direction and also has a valve controller for moving, when supplying pressurized oil, the valve in the opposite direction against the pressing force of the valve presser. A valve control port communicates with the valve controller so as to supply the pressurized oil to the valve controller and is separated from a piston front chamber and a piston rear chamber. Only either a piston retraction control port or a piston advance control port communicates with the valve control port depending on advance or retraction of the valve switching groove.
摘要翻译：提供了一种具有改进的锤击效率和低成本的液压锤击装置。活塞在其大直径部分之间具有阀切换槽。气缸在对应于阀切换槽的位置处具有三个控制口。切换阀机构具有用于一直按压阀的一个方向的阀按压阀，还具有阀控制器，该阀控制器在向压力机的按压力相反的方向上供给加压油时移动阀。阀门控制端口与阀门控制器连通，以将加压油供应到阀门控制器，并与活塞前室和活塞后室分离。活塞回缩控制端口或活塞前进控制端口只要阀开关槽的前进或后退就与阀门控制端口连通。

6. 发明授权

US11084155B2 Hydraulic striking device 有权
公开(公告)号：US11084155B2
公开(公告)日：2021-08-10
申请号：US16329160
申请日：2017-08-21
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Toshio Matsuda
IPC分类号： B25D9/26 , B25D9/14 , B25D9/20 , B25D9/18
摘要： Provided is a hydraulic striking device in which a reverse operation circuit and a forward operation circuit can switch connection states to a high pressure circuit and a low pressure circuit by means of an operation switching valve. Further, the hydraulic striking device is configured to be selectable between a reverse operation mode or a forward operation mode by operating the operation switching valve. A high/low pressure switching portion is provided with a shortening portion for reducing the time required for high/low pressure switching operation in piston front and rear chambers in association with retraction of a valve to be shorter than the time required for high/low pressure switching operation in the piston front and rear chambers in association with advancement of the valve.

7. 发明授权

US11034010B2 Hydraulic hammering device 有权
公开(公告)号：US11034010B2
公开(公告)日：2021-06-15
申请号：US16065325
申请日：2016-12-20
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Tsutomu Kaneko , Masahiro Koizumi , Toshio Matsuda
IPC分类号： B25D9/26 , B25D17/24 , E21B1/02 , E21C27/12
摘要： A hydraulic hammering device is capable of sufficiently transmitting blow energy to bedrock while further strengthening cushioning action and suppressing damage to equipment. The device includes a pushing piston disposed behind a transmission member and having a smaller propulsive force than that of a main body, a damping piston positioned behind the pushing piston to slide reciprocally forwards and backwards and having a greater propulsive force than that of the main body, a direction-restrictor in a high-pressure circuit between pushing and damping chambers, to which hydraulic fluid is supplied for providing the pistons with propulsive forces, and a fluid supply source. The direction-restrictor restricts an outflow from the chambers side to the fluid supply source side while allowing fluid inflow from the fluid supply source side to the chambers and the pushing chamber sides. A throttle in a drain circuit discharges leaked fluid from a sliding contact location to a tank.

8. 发明授权

US10493610B2 Hydraulic hammering device 有权
公开(公告)号：US10493610B2
公开(公告)日：2019-12-03
申请号：US15113664
申请日：2015-01-30
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Masahiro Koizumi , Susumu Murakami , Toshio Matsuda , Tomohiro Goto , Shunsuke Echigoya
IPC分类号： B25D9/20 , B25D9/12
CPC分类号： B25D9/20 , B25D9/12 , B25D2209/005
摘要： A hydraulic hammering device that uses a scheme in which a front chamber is switched into communication with a low-pressure circuit when a piston advances, wherein occurrences of “galling” to the piston at a sliding contact portion with a front-chamber liner is reduced. The front chamber has the front-chamber liner fitted to an inner surface of a cylinder. A hydraulic chamber space communicating with the front chamber and filled with hydraulic oil is formed as a cushion chamber on the inner peripheral surface of a rear portion of the front-chamber liner. The cushion chamber has a second drain circuit (from first end face grooves to slits to second end face grooves), which is provided separately from a drain circuit that guides the hydraulic fluid passing through a liner bearing of the front-chamber liner to the low-pressure circuit.

9. 发明申请

US20190224835A1 Hydraulic Striking Device 审中-公开
公开(公告)号：US20190224835A1
公开(公告)日：2019-07-25
申请号：US16329160
申请日：2017-08-21
申请人： Furukawa Rock Drill Co., Ltd.
发明人： Toshio Matsuda
IPC分类号： B25D9/26 , B25D9/14
摘要： Provided is a hydraulic striking device in which a reverse operation circuit and a forward operation circuit can switch connection states to a high pressure circuit and a low pressure circuit by means of an operation switching valve. Further, the hydraulic striking device is configured to be selectable between a reverse operation mode or a forward operation mode by operating the operation switching valve. A high/low pressure switching portion is provided with a shortening portion for reducing the time required for high/low pressure switching operation in piston front and rear chambers in association with retraction of a valve to be shorter than the time required for high/low pressure switching operation in the piston front and rear chambers in association with advancement of the valve.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式