IES87448Y1 - Hybrid hydraulic down-the-hole hammer - Google Patents

Hybrid hydraulic down-the-hole hammer

Info

Publication number
IES87448Y1
IES87448Y1 IE20220123U IE20220123U IES87448Y1 IE S87448 Y1 IES87448 Y1 IE S87448Y1 IE 20220123 U IE20220123 U IE 20220123U IE 20220123 U IE20220123 U IE 20220123U IE S87448 Y1 IES87448 Y1 IE S87448Y1
Authority
IE
Ireland
Prior art keywords
piston
hammer
wear sleeve
outer wear
shaft
Prior art date
Application number
IE20220123U
Other versions
IE20220123U1 (en
Inventor
Markku Keskiniva
Original Assignee
Mincon Int Ltd
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 Mincon Int Ltd filed Critical Mincon Int Ltd
Priority to IE20220123U priority Critical patent/IE20220123U1/en
Publication of IES87448Y1 publication Critical patent/IES87448Y1/en
Publication of IE20220123U1 publication Critical patent/IE20220123U1/en

Links

Landscapes

  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention relates to a closed-loop hydraulic down-the-hole hammer comprising an elongate shaft and a piston having a central bore therethrough, the piston slidably mounted for reciprocal movement on the shaft and arranged to impact a percussion bit, wherein forward and rear drive chambers for the piston are disposed between the piston and the shaft and wherein the forward chamber is separated from the rear chamber by an annular shoulder formed internally of the piston bore. The hammer also comprises a control valve to control reciprocation of the piston, wherein the control valve is arranged within the central bore of the piston. The hammer further comprises an outer wear sleeve, wherein the piston is housed within the outer wear sleeve. A supplementary rear drive chamber is disposed between the piston and the outer wear sleeve.
IE20220123U 2022-07-21 2022-07-21 Hybrid hydraulic down-the-hole hammer IE20220123U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IE20220123U IE20220123U1 (en) 2022-07-21 2022-07-21 Hybrid hydraulic down-the-hole hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE20220123U IE20220123U1 (en) 2022-07-21 2022-07-21 Hybrid hydraulic down-the-hole hammer

Publications (2)

Publication Number Publication Date
IES87448Y1 true IES87448Y1 (en) 2023-11-08
IE20220123U1 IE20220123U1 (en) 2023-11-08

Family

ID=89432546

Family Applications (1)

Application Number Title Priority Date Filing Date
IE20220123U IE20220123U1 (en) 2022-07-21 2022-07-21 Hybrid hydraulic down-the-hole hammer

Country Status (1)

Country Link
IE (1) IE20220123U1 (en)

Also Published As

Publication number Publication date
IE20220123U1 (en) 2023-11-08

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