公开(公告)号：US11878401B2

公开(公告)日：2024-01-23

申请号：US17026744

申请日：2020-09-21

Applicant: Hilti Aktiengesellschaft

Inventor： Frank Kohlschmied ,  Markus Hartmann

IPC: B25D11/00 ,  B25D16/00

CPC classification number: B25D11/005 ,  B25D16/00 ,  B25D2217/0015 ,  B25D2217/0019 ,  B25D2250/035

Abstract: A handheld power tool 1 has a tool socket 2 to hold a tool along a working axis 11. A motor-driven, pneumatic striking mechanism 6 has an exciter 17 which is driven by a motor 5, a striker 14 that is coupled to the exciter 17 via a pneumatic chamber 19, and an intermediate striker 22 arranged on the working axis 11 in the striking direction 12 behind the striker 14. A ventilation opening 30 connects a cavity 29 situated between the striker 14 and the intermediate striker 22 to the environment. A valve 38 that closes the ventilation opening 30 is opened when actuated by the intermediate striker 22 when the intermediate striker 22 is moved into its working position counter to the striking direction 12.

公开(公告)号：US20230294260A1

公开(公告)日：2023-09-21

申请号：US17928683

申请日：2021-06-01

Applicant: SANDVIK MINING AND CONSTRUCTION OY

Inventor： Antti KOSKIMAKI ,  Lars KANDELIN ,  Mikko HAMALAINEN ,  Timo KELA ,  Matti VIINIKKA ,  Esa LAAKKOLA

IPC: B25D17/06 ,  B25D9/12 ,  E21B1/26

CPC classification number: B25D17/06 ,  B25D9/12 ,  E21B1/26 ,  B25D2217/0019 ,  B25D2250/125 ,  B25D2250/331

Abstract: A piston guiding element, rock drilling machine and method for supporting a front end portion of a percussion piston of a rock drilling machine. The piston guiding element includes a braking recess at its rear end. The element further includes at least one bearing sleeve, which is provided with two axially successive slide bearing sections. Hydraulic fluid is conveyed between the slide bearing sections via a feed system.

公开(公告)号：US09969073B2

公开(公告)日：2018-05-15

申请号：US14443038

申请日：2013-11-12

Applicant: Hilti Aktiengesellschaft

Inventor： Rainer Ontl ,  Damir Cehajic ,  Christoph Dieing ,  Christian Rehekampff

IPC: B25D17/06 ,  B25D11/00

CPC classification number: B25D17/06 ,  B25D11/005 ,  B25D2217/0019 ,  B25D2217/0023 ,  B25D2250/131 ,  B25D2250/191 ,  B25D2250/245

Abstract: A hand-held power tool is disclosed. The tool has a tool receptacle for holding a chiseling tool. A pneumatic percussion mechanism of the hand-held power tool includes a striker, an exciter and a guide tube. The striker is designed to apply impacts in the impact direction to the tool. The exciter is motor-driven. The striker is coupled by an air spring to the reciprocating movement of the exciter. The striker abutting the guide tube is guided along a working axis. During a movement between an impact position and the exciter, the striker is guided with a constant guide length on the guide tube and if the impact position is exceeded in the impact direction, the guide length is reduced. The hand-held power tool is equipped with an inclined guide, which inclines the striker relative to the working axis when the impact position is exceeded.

公开(公告)号：US09656378B2

公开(公告)日：2017-05-23

申请号：US14473187

申请日：2014-08-29

Applicant: Hilti Aktiengesellschaft

Inventor： Markus Hartmann ,  Manfred Ludwig ,  Franz Moessnang

IPC: B23B45/16 ,  B25D9/00 ,  B25D11/00 ,  B25D13/00 ,  B25D16/00 ,  B25D17/24 ,  B25D17/06 ,  B25D11/04

CPC classification number: B25D17/24 ,  B25D11/04 ,  B25D17/06 ,  B25D2211/068 ,  B25D2217/0019 ,  B25D2222/57 ,  B25D2250/345

Abstract: A machine tool is disclosed. The machine tool has a tool receptacle for receiving a tool on a working axis, a housing, and a striking mechanism. An impact stop is provided for a beater or an intermediate beater. An impact absorber has two polymer-based absorber rings that are offset axially to one another and are disposed so that they overlap radially and has two iron-based disks disposed axially between the absorber rings.

公开(公告)号：US20160311103A1

公开(公告)日：2016-10-27

申请号：US15105199

申请日：2014-12-09

Applicant: Hilti Aktiengesellschaft

Inventor： Aaron Wiedner ,  Thomas Hofbrucker ,  Eduard Pfeiffer ,  Markus Hartmann

IPC: B25D17/06 ,  B25D17/24 ,  B25D16/00

CPC classification number: B25D17/06 ,  B25D16/00 ,  B25D17/24 ,  B25D17/245 ,  B25D2217/0015 ,  B25D2217/0019 ,  B25D2250/225

Abstract: The handheld power tool has a tool receptacle for accommodating a tool on a working axis (11) and an electric motor (5). A pneumatic percussion mechanism (6) has an exciter, which is moved back-and-forth by the motor (5) periodically in parallel to the working axis (11), a striker (14), which is movable on the working axis (11) and is coupled via a pneumatic spring (18) to the exciter, and an anvil (19), which is situated movably on the working axis (11) and is situated downstream from the striker (14) in the percussion direction (12). The anvil (19) has a cylindrical anvil section (22) having a diameter and multiple channels (30) extending over the entire length (31) of the anvil section (22). A cross-sectional area of the anvil section (22) is at most 5% less than a circular area defined by the diameter.

Abstract translation: 手持式电动工具具有用于在工作轴线（11）和电动机（5）上容纳工具的工具插座。 气动冲击机构（6）具有激励器，其通过电动机（5）周期性地平行于工作轴线（11）前后移动，可在工作轴线上移动的撞针（14） 11），并且经由气动弹簧（18）耦合到激励器，以及砧座（19），其被可移动地设置在工作轴线（11）上并且位于冲击方向（12）的下游 ）。 砧座（19）具有圆柱形砧部（22），其具有在砧部（22）的整个长度（31）上延伸的直径和多个通道（30）。 砧部（22）的横截面积比由直径限定的圆形区域少5％以下。

公开(公告)号：US09132540B2

公开(公告)日：2015-09-15

申请号：US13261412

申请日：2011-03-22

Applicant: Per Jonsson

Inventor： Per Jonsson

IPC: E21B31/113 ,  B25D17/06 ,  B25D9/12

CPC classification number: B25D9/12 ,  B25D17/06 ,  B25D2217/0019 ,  B25D2250/365

Abstract: The present invention relates to a hydraulic percussive arrangement comprising a displaceable arrangement (1) in a casing (11), in which casing (11) the following are arranged at the displaceable arrangement (1): a first chamber (5) connected to a return line (7) for hydraulic oil, a bushing (6) on a first side of the first chamber (5) and separated from the first chamber (5) by a first gap (12) along the displaceable arrangement (1), and a second chamber (2) with a higher pressure of hydraulic oil than that of the first chamber (5) and arranged on a second side of the first chamber (5), separated from the first chamber (5) by a second gap (4) along the displaceable arrangement (1). According to the invention, a third chamber (8) is fixed arranged between the second gap (4) and the first chamber (5) and the third chamber (8) is connected to the first chamber (5) not only by a first passage (14) but also by a third gap (9) along the displaceable arrangement (1). The invention relates also to a piston guide in such a hydraulic percussive arrangement and to a drilling rig with such a percussive arrangement.

Abstract translation: 液压冲击装置技术领域本发明涉及一种液压冲击装置，其包括在壳体（11）中的可移动装置（1），其中下列装置布置在可移动装置（1）处：第一腔室（5） 用于液压油的返回管线（7），在第一室（5）的第一侧上的衬套（6），并沿着可移位装置（1）与第一室（5）分隔开第一间隙（12）;以及 第二室（2），其具有比第一室（5）更高的液压油压力，并且布置在第一室（5）的第二侧上，与第一室（5）分隔开第二间隙（4） ）沿着可移位装置（1）。 根据本发明，第三室（8）固定地设置在第二间隙（4）和第一室（5）之间，第三室（8）不仅通过第一通道 （14），而且沿着可移位装置（1）的第三间隙（9）。 本发明还涉及一种具有这种液压冲击装置的活塞导向件以及具有这种冲击装置的钻机。

公开(公告)号：US20140144658A1

公开(公告)日：2014-05-29

申请号：US14130924

申请日：2012-06-13

Applicant: Lars Schmid ,  Johannes Schnitzler ,  Jan Koalick

Inventor： Lars Schmid ,  Johannes Schnitzler ,  Jan Koalick

IPC: B25D17/06

CPC classification number: B25D17/06 ,  B25D11/005 ,  B25D17/24 ,  B25D2217/0015 ,  B25D2217/0019 ,  B25D2217/0023

Abstract: A percussion mechanism apparatus, in particular for a rotary and/or demolition hammer, includes at least one striker, at least one percussion pin with at least one guide lug that faces the striker, and at least one movably mounted control disc arranged around the guide lug. The guide lug has at least one end that projects beyond the control disc in every operating state.

Abstract translation: 特别是用于旋转和/或拆卸锤的冲击机构装置包括至少一个撞击器，至少一个冲击针，其具有面向撞针的至少一个导向凸耳，以及至少一个可移动地安装的控制盘，其布置在引导件周围 耳朵 在每个操作状态下，导向凸耳至少有一端伸出控制盘。

公开(公告)号：US08235136B2

公开(公告)日：2012-08-07

申请号：US11917988

申请日：2006-06-21

Applicant: Rudolf Berger ,  Wolfgang Schmid

Inventor： Rudolf Berger ,  Wolfgang Schmid

IPC: B25D11/04

CPC classification number: B25D11/005 ,  B25D11/125 ,  B25D17/043 ,  B25D2211/003 ,  B25D2217/0019 ,  B25D2250/035 ,  B25D2250/131 ,  B25D2250/221 ,  B25D2250/371

Abstract: A drilling and/or percussive hammer comprises a handle and a hammer housing, which can move relative to the handle and inside of which, among other things, a pneumatic spring percussive mechanism is housed. The pneumatic spring of the pneumatic spring percussive mechanism can be ventilated via a no-load operation duct that is opened and closed by a valve. The valve can be opened and closed according to a pressing force acting upon the handle. A delay device controls the valve during closing so that the valve reaches the position corresponding to the detected pressing force only with a time delay. This causes a smooth transition from the no-load operation to the percussive operation.

Abstract translation: 钻孔和/或冲击锤包括手柄和锤壳体，其可以相对于手柄移动，并且其内部容纳有气动弹簧冲击机构。 气动弹簧冲击机构的气动弹簧可以通过由阀门打开和关闭的空载操作管道进行通风。 阀可以根据作用在手柄上的按压力而打开和关闭。 延迟装置在关闭期间控制阀门，使得阀门仅在时间延迟的情况下到达与检测到的按压力相对应的位置。 这导致从空载操作到敲击操作的平滑过渡。

公开(公告)号：US20120125650A1

公开(公告)日：2012-05-24

申请号：US13297782

申请日：2011-11-16

Applicant: Olaf Koch ,  Matthias Keith ,  Dieter Kraus ,  Ali Shadavakhsh

Inventor： Olaf Koch ,  Matthias Keith ,  Dieter Kraus ,  Ali Shadavakhsh

IPC: B25D17/00

CPC classification number: B25D17/26 ,  B25D17/06 ,  B25D17/24 ,  B25D2217/0019 ,  B25D2222/57 ,  B25D2250/345

Abstract: A hand-held machine tool is provided. The hand-held machine tool includes a striking element that is accelerated along a working axis, and a guide for the striking element. A cushioning damper limits a motion of the striking element along the working axis and has an elastic damping ring. The damping ring has grooves running on at least one face side radial to the working axis.

Abstract translation: 提供手持机床。 手持式机床包括沿工作轴线加速的冲击元件和用于冲击元件的引导件。 缓冲阻尼器限制击打元件沿着工作轴线的运动并且具有弹性阻尼环。 阻尼环具有在与工作轴线径向的至少一个面侧上延伸的槽。

公开(公告)号：US20110100665A1

公开(公告)日：2011-05-05

申请号：US12935605

申请日：2009-04-01

Applicant: Keiji Nakashima

Inventor： Keiji Nakashima

IPC: B25D17/24

CPC classification number: B25F5/026 ,  B23D51/01 ,  B25D17/043 ,  B25D17/06 ,  B25D2217/0019 ,  B25D2222/57 ,  B25D2250/231 ,  B25D2250/245 ,  B25F5/006

Abstract: A technique for reducing the costs of manufacturing an auxiliary handle provided separately from a main handle in a hand-held power tool is provided. A hand-held power tool (101) includes a power tool body (103) having a front end region to which a tool bit (119) can be mounted, a main handle (109) that is disposed on a rear end side of the power tool body (103) opposite from the tool bit (119), an auxiliary-handle mounting member (108) for mounting an auxiliary handle (110), and longitudinally elastic elements (151, 152) that are disposed between the power tool body (103) and the auxiliary handle mounting member (108) in the axial direction of the tool bit (119) and can elastically deform in the axial direction. The auxiliary-handle mounting member (108) is allowed to move with respect to the power tool body (103) in the axial direction of the tool bit (119) by elastic deformation of the longitudinally elastic elements (151, 152), so that transmission of vibration from the power tool body (103) to the auxiliary-handle mounting member (108) in the axial direction is reduced.

Abstract translation: 提供了一种用于降低制造与手持式电动工具中的主把手分开设置的辅助把手的成本的技术。 一种手持式电动工具（101），其具有动力工具本体（103），该动力工具本体具有能够安装工具钻头（119）的前端区域，主把手（109） 电动工具主体（103），与工具刀头相对的辅助手柄安装构件（108），以及用于安装辅助手柄（110）的辅助手柄安装构件（108）和纵向弹性元件（151,152） （103）和辅助手柄安装构件（108）沿工具钻头（119）的轴向方向，并且可以沿轴向弹性变形。 通过纵向弹性元件（151,152）的弹性变形，辅助把手安装构件（108）能够相对于电动工具主体（103）在工具头（119）的轴向上移动，从而 减少了从动力工具本体（103）到辅助手柄安装部件（108）的轴向振动的传递。