WO2003074834A1 - Drill equipped with vibrating hammer with eccentric masses for tool support - Google Patents

Drill equipped with vibrating hammer with eccentric masses for tool support Download PDF

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Publication number
WO2003074834A1
WO2003074834A1 PCT/IT2002/000137 IT0200137W WO03074834A1 WO 2003074834 A1 WO2003074834 A1 WO 2003074834A1 IT 0200137 W IT0200137 W IT 0200137W WO 03074834 A1 WO03074834 A1 WO 03074834A1
Authority
WO
WIPO (PCT)
Prior art keywords
series
vibrating hammer
eccentric masses
fixed
tool
Prior art date
Application number
PCT/IT2002/000137
Other languages
French (fr)
Inventor
Andrea Tonti
Alessandro Tonti
Original Assignee
Andrea Tonti
Alessandro Tonti
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 Andrea Tonti, Alessandro Tonti filed Critical Andrea Tonti
Priority to AU2002247961A priority Critical patent/AU2002247961A1/en
Priority to PCT/IT2002/000137 priority patent/WO2003074834A1/en
Publication of WO2003074834A1 publication Critical patent/WO2003074834A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
    • E21B6/04—Separate drives for percussion and rotation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/04—Rotary tables
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Definitions

  • Drill equipped with vibrating hammer with eccentric masses for tool support Drill equipped with vibrating hammer with eccentric masses for tool support.
  • This patent application concerns a drill equipped with vibrating hammer for tool support to give the tool a percussion motion in addition to the traditional perforation motion.
  • Vibrating hammers are used in case of non-solid ground, such as sandy gtound that would continuously tend to slide down inside the hole during drilling. In these cases vibrating hammers are used to drive a series of cylindrical support jackets, in which drilling is carried out, into the ground.
  • Vibrating hammers are suitably installed under the rotary, i.e. the powered crown designed to drive into rotation the series of telescopic rods, on whose base the excavating tool is mounted.
  • the purpose of the present invention is to install a vibrating hammer in a drill, in order to increase the perforation capacity of the tool, thanks to the possibility of giving a roto-vibrating motion to the tool.
  • the perforation tool is directly supported by a vibrating hammer with eccentric masses, installed at the base of the series of telescopic rods that give the perforation motion to the tool.
  • the hydraulic motors have been located above - and not at the ends, as in the models of known type - of the two splined shafts of the pairs of eccentric masses.
  • Each eccentric mass operates on offset vertical planes, in such a way that he shafts, can be placed at a smaller distance than the diameter of the eccentric masses.
  • a special rotating platform has been designed to support the two winding reels of the supply tubes of the two motors of the vibrating hammer.
  • the platform is installed directly on the rotary and equipped with a hydraulic rotating joint used to power the pair of reels that turns together with the series of telescopic rods.
  • the vibrating hammer is mounted at the base of the series of telescopic rods by means of a special shock-absorbing joint, which transfers the perforation motion from the series of rods to the vibrating hammer, without transmitting the vibrations imposed on the excavating tool by the vibrating hammer to the rods.
  • FIG. 1 is a schematic view of the drill of the invention equipped with a screw tool
  • - Fig. 2 is an axonometric view of the assembly that comprises the shock- absorbing joint and the vibrating hammer, equipped with a toothed excavating tool;
  • - Fig. 3 is a cross-section of the vibrating hammer of Fig. 2 with a plane passing through the rotation axes of the pairs of eccentric masses;
  • - Fig. 4 is a cross-section of the assembly that comprises' the joint, the vibrating hammer and the tool of Fig. 2 with an axial vertical plane diametrical to the rotation axes of the pairs of eccentric masses;
  • - Fig. 5 is an axonometric view of the hydraulic rotating joint mounted on the rotary to power the rotating pair of winding reels of the supply tubes of the hydraulic motors of the vibrating hammer;
  • - Fig. 6 is a cross-section of the hydraulic rotating joint of Fig. 5 with a diametrical vertical plane orthogonal to the rotation axes of the winding reels of the supply tubes of the hydraulic motors of the vibrating hammer.
  • Fig. 7 js a cross-section of the hydraulic rotating joint of Fig. 5 with a diametrical vertical plane parallel to the rotation axes of the winding reels of the supply tubes of the hydraulic motors of the vibrating hammer.
  • the drill of the invention comprises a rotary (1) that drives into rotation a series of telescopic rods (2), which give a rotating motion and an axial thrust to the excavating tool (3 or 3a).
  • the peculiarity of the machine of the invention is represented by the fact that the tool (3 or 3a) is flanged under a special vibrating hammer (4) with eccentric masses, which is in turn fixed to the base of the series of telescopic rods (2) by means of a special shock-absorbing joint (5).
  • the vibrating hammer (4) is formed by a first box-type body (6) that contains the pairs of eccentric masses (7) and a second box-type body (8) that is positioned above the first body and contains the hydraulic motors (9) and the transmission gears (10).
  • a parallel pair of small shafts (11) is housed inside the first box-type body (6), on which the eccentric masses (7) and the two gear wheels (12) are splined, mutually engaged and at the same time engaged with the transmission gears (10). It must be noted that the opposite pairs of eccentric masses (7) lay on offset vertical planes (as shown in Fig. 3), in such a way that the splining shafts (11) can be positioned at a smaller distance than the diameter of the eccentric masses (7).
  • the vibrating hammer (4) is mounted at the base of the series of telescopic rods (2) through a special shock-absorbing joint (5), which comprises a bracket (13) from which a tube (13a) centrally protrudes, being exactly inserted in a second tube (14a), in which it slides, fixed in the centre and under a circular platform (14), provided in the upper section with ordinary fixing means (15) to anchor it to the base of the series of telescopic rods (2).
  • a first radial series of vertical partitions (16) is welded above the bracket (13), opposed to a second corresponding radial series of vertical partitions (17) externally welded on the bigger tube (14a).
  • Rubber buffers (18) are tightened between the two corresponding opposite series of partitions (16 and 17), in order to absorb the vibrations transmitted by the vibrating hammer (4) to the series of telescopic rods (2).
  • the drill of the invention comprises a pair of winding reels (20) for the supply tubes (21) of the hydraulic motors (9) mounted under a rotating platform (22) with central hole (22a) for the series of telescopic rods (2).
  • a central collar (23) protrudes from the platform (22), featuring an upper flange (23a) used to fix it with screws (24) under the rotary (1) that drives into rotation the platform (22) together with the telescopic rods (2).
  • the collar (23) is inserted and turns inside a fixed jacket (25) that has an upper flange (25a) used to fix it with screws (26) to the bearing frame of the rotary (1).
  • the external surface of the rotating collar (23) has an annular groove (23b) exactly opposed to the hole (27) on the fixed jacket (25) used to insert the hydraulic supply tube of the motors (9).
  • the rotating collar (23) has an opposite pair of axial channels (23c) that end into the annular groove (23b), on whose opening (23d) the supply tubes (21) are inserted.

Abstract

The present invention concerns a drill in which the perforation tool is directly mounted on a vibrating hammer (4) with eccentric masses (7), installed at the base of the series of telescopic rods that give the perforation motion to the tool.

Description

Description
Drill equipped with vibrating hammer with eccentric masses for tool support.
This patent application concerns a drill equipped with vibrating hammer for tool support to give the tool a percussion motion in addition to the traditional perforation motion.
Drills equipped with vibrating hammers are currently available on the market. Vibrating hammers are used in case of non-solid ground, such as sandy gtound that would continuously tend to slide down inside the hole during drilling. In these cases vibrating hammers are used to drive a series of cylindrical support jackets, in which drilling is carried out, into the ground.
In this type of drills, therefore, vibrating hammers are not used to give a percussion motion to the excavating tool that is applied at the base of the series of telescopic rods. As a matter of fact, the tool is actuated separately, after the vibrating hammer.
This type of drills normally used traditional vibrating hammers with eccentric masses that can be found on the market. Vibrating hammers are suitably installed under the rotary, i.e. the powered crown designed to drive into rotation the series of telescopic rods, on whose base the excavating tool is mounted.
The purpose of the present invention is to install a vibrating hammer in a drill, in order to increase the perforation capacity of the tool, thanks to the possibility of giving a roto-vibrating motion to the tool.
For this end, the perforation tool is directly supported by a vibrating hammer with eccentric masses, installed at the base of the series of telescopic rods that give the perforation motion to the tool.
However, the realisation of the invention has required the solution of a series of problems, among which designing a new vibrating hammer with eccentric masses smaller than traditional excavating tools, since the vibrating hammer goes down the drilling hole together with the excavating tool. Another problem was represented by the hydraulic power supply of the vibrating hammer, since the hammer is mobile and driven into rotation together with the excavating tool.
Moreover, it was necessary to avoid that the vibrations given to the tool by the vibrating hammer were transmitted to the rotary, through the series of telescopic rods on which the vibrating hammer is mounted.
In order to reduce the overall dimensions of the vibrating hammer, the hydraulic motors have been located above - and not at the ends, as in the models of known type - of the two splined shafts of the pairs of eccentric masses. Each eccentric mass operates on offset vertical planes, in such a way that he shafts, can be placed at a smaller distance than the diameter of the eccentric masses.
As regards the hydraulic power supply of the vibrating hammer, a special rotating platform has been designed to support the two winding reels of the supply tubes of the two motors of the vibrating hammer. The platform is installed directly on the rotary and equipped with a hydraulic rotating joint used to power the pair of reels that turns together with the series of telescopic rods.
The vibrating hammer is mounted at the base of the series of telescopic rods by means of a special shock-absorbing joint, which transfers the perforation motion from the series of rods to the vibrating hammer, without transmitting the vibrations imposed on the excavating tool by the vibrating hammer to the rods.
For major clarity the description of the drill according to the present invention continues with reference to the enclosed drawings, which are intended for purposes of illustration and not in a limiting sense, whereby:
- Fig. 1 is a schematic view of the drill of the invention equipped with a screw tool;
- Fig. 2 is an axonometric view of the assembly that comprises the shock- absorbing joint and the vibrating hammer, equipped with a toothed excavating tool;
- Fig. 3 is a cross-section of the vibrating hammer of Fig. 2 with a plane passing through the rotation axes of the pairs of eccentric masses;
- Fig. 4 is a cross-section of the assembly that comprises' the joint, the vibrating hammer and the tool of Fig. 2 with an axial vertical plane diametrical to the rotation axes of the pairs of eccentric masses; - Fig. 5 is an axonometric view of the hydraulic rotating joint mounted on the rotary to power the rotating pair of winding reels of the supply tubes of the hydraulic motors of the vibrating hammer;
- Fig. 6 is a cross-section of the hydraulic rotating joint of Fig. 5 with a diametrical vertical plane orthogonal to the rotation axes of the winding reels of the supply tubes of the hydraulic motors of the vibrating hammer.
- Fig. 7 js a cross-section of the hydraulic rotating joint of Fig. 5 with a diametrical vertical plane parallel to the rotation axes of the winding reels of the supply tubes of the hydraulic motors of the vibrating hammer.
With reference to the aforementioned figures, the drill of the invention comprises a rotary (1) that drives into rotation a series of telescopic rods (2), which give a rotating motion and an axial thrust to the excavating tool (3 or 3a).
The peculiarity of the machine of the invention is represented by the fact that the tool (3 or 3a) is flanged under a special vibrating hammer (4) with eccentric masses, which is in turn fixed to the base of the series of telescopic rods (2) by means of a special shock-absorbing joint (5).
With special reference to Figs. 2, 3 and 4, the vibrating hammer (4) is formed by a first box-type body (6) that contains the pairs of eccentric masses (7) and a second box-type body (8) that is positioned above the first body and contains the hydraulic motors (9) and the transmission gears (10).
More precisely, a parallel pair of small shafts (11) is housed inside the first box-type body (6), on which the eccentric masses (7) and the two gear wheels (12) are splined, mutually engaged and at the same time engaged with the transmission gears (10). It must be noted that the opposite pairs of eccentric masses (7) lay on offset vertical planes (as shown in Fig. 3), in such a way that the splining shafts (11) can be positioned at a smaller distance than the diameter of the eccentric masses (7).
This means that, during synchronised rotation, the opposite pairs of eccentric masses (7) pass one through the other, with comb-like mutual co- penetration. In short it can be said that the position of the hydraulic motors (9) above the eccentric masses (7) and the adoption of offset rotation planes for the eccentric masses allow for using large diameter masses, while maintaining the overall dimensions within reasonable values. The tool (3 or 3a) is flanged under the box-type body (6). The vibrating hammer (4) is mounted at the base of the series of telescopic rods (2) through a special shock-absorbing joint (5), which comprises a bracket (13) from which a tube (13a) centrally protrudes, being exactly inserted in a second tube (14a), in which it slides, fixed in the centre and under a circular platform (14), provided in the upper section with ordinary fixing means (15) to anchor it to the base of the series of telescopic rods (2). A first radial series of vertical partitions (16) is welded above the bracket (13), opposed to a second corresponding radial series of vertical partitions (17) externally welded on the bigger tube (14a).
Rubber buffers (18) are tightened between the two corresponding opposite series of partitions (16 and 17), in order to absorb the vibrations transmitted by the vibrating hammer (4) to the series of telescopic rods (2).
With special reference to Figs. 1 , 5 and 6, the drill of the invention comprises a pair of winding reels (20) for the supply tubes (21) of the hydraulic motors (9) mounted under a rotating platform (22) with central hole (22a) for the series of telescopic rods (2).
A central collar (23) protrudes from the platform (22), featuring an upper flange (23a) used to fix it with screws (24) under the rotary (1) that drives into rotation the platform (22) together with the telescopic rods (2).
The collar (23) is inserted and turns inside a fixed jacket (25) that has an upper flange (25a) used to fix it with screws (26) to the bearing frame of the rotary (1).
The external surface of the rotating collar (23) has an annular groove (23b) exactly opposed to the hole (27) on the fixed jacket (25) used to insert the hydraulic supply tube of the motors (9).
On the other hand, the rotating collar (23) has an opposite pair of axial channels (23c) that end into the annular groove (23b), on whose opening (23d) the supply tubes (21) are inserted.

Claims

Claims
1) Drill equipped with vibrating hammer with eccentric masses for tool support, of the type comprising a rotary (1) that drives into rotation a series of telescopic rods (2), which give a rotating motion and an axial thrust to the excavating tool, characterised by the fact that the tool is flanged under a
,5 special vibrating hammer (4), with eccentric masses, which is in turn fixed to the base of the series of telescopic rods (2) by means of a special shock- absorbing joint (5); it being provided that the vibrating hammer (4) is powered by tubes (21) wound on reels (20) mounted on a rotating platform (22) fixed to the rotary (1) and equipped with a hydraulic rotating joint. 0 2) Drill according to the previous claim, characterised by the fact that the vibrating hammer (4) is formed by a first box-type body (6) that contains the pairs of eccentric masses (7) and a second box-type body (8) that is positioned above the first one and contains the hydraulic motors (9) and the transmission gears (10), which engaged with gear wheels (12), respectively 5 splined on the parallel pair of small shafts (11) contained in the box-type body (6), on which the opposite pairs of eccentric masses (7) laying on offset vertical planes are splined.
3) Drill according to claim 1 , characterised by the fact that the joint (5) comprises: 0 - a bracket (13) from which a tube (13a) centrally protrudes, being exactly inserted in a second, tube (14a) in which it slides, fixed in the centre and under a circular platform (14), provided in the upper section with ordinary fixing means (15) to anchor it to the base of the series of telescopic rods (2);
- a first radial series of vertical partitions (16) welded above the bracket (13), 5 opposed to a second corresponding radial series of vertical partitions (17) externally welded on the bigger tube (14a);
- rubber buffers (18) tightened between the two corresponding opposite series of partitions (16 and 17).
4) Drill according to claim 1 , characterised by the fact that a central collar (23) 0 protrudes from the platform (22) and is fixed with screws (24) under the rotary (1), being inserted in a fixed jacket (25) fixed with screws (26) to the bearing frame of the rotary; it being provided that the external surface of the rotating collar (23) has an annular groove (23b) exactly opposed to the hole (27) on the fixed jacket (25) to insert the hydraulic supply tube of the motors (9); it being also provided that the rotating collar (23) has an opposite pair of axial channels (23c) that end into the annular groove (23b), on whose opening (23d) the supply tubes (21) are inserted.
PCT/IT2002/000137 2002-03-05 2002-03-05 Drill equipped with vibrating hammer with eccentric masses for tool support WO2003074834A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002247961A AU2002247961A1 (en) 2002-03-05 2002-03-05 Drill equipped with vibrating hammer with eccentric masses for tool support
PCT/IT2002/000137 WO2003074834A1 (en) 2002-03-05 2002-03-05 Drill equipped with vibrating hammer with eccentric masses for tool support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2002/000137 WO2003074834A1 (en) 2002-03-05 2002-03-05 Drill equipped with vibrating hammer with eccentric masses for tool support

Publications (1)

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WO2003074834A1 true WO2003074834A1 (en) 2003-09-12

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WO (1) WO2003074834A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012068771A1 (en) * 2010-11-22 2012-05-31 Tang Zhongsheng Impact-type hydraulic rock drilling machine
CN107842308A (en) * 2017-12-21 2018-03-27 无锡市安曼工程机械有限公司 Vibration type power head device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970660A (en) * 1954-07-12 1961-02-07 Jr Albert G Bodine Polyphase sonic earth bore drill
US3291228A (en) * 1965-02-23 1966-12-13 Jr Albert G Bodine Sonic techniques and apparatus for earth boring
DE19950599A1 (en) * 1999-09-17 2001-03-22 Klemm Bohrtechnik Zweigniederl Drill for making holes for piles has drilling screw with cutter bit at end, hammer drill being mounted in hollow central tube of drilling screw which has air cushioning system to protect it against effect of drilling screw
WO2001083170A1 (en) * 2000-04-28 2001-11-08 Oy Robit Rocktools Ltd Method and arrangement for adjusting the percussion energy in a percussion drilling apparatus
EP1157787A1 (en) * 2000-05-18 2001-11-28 Günter Prof. Dr.-Ing. Klemm Method for soil and stoneworking and hydraulic impact tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970660A (en) * 1954-07-12 1961-02-07 Jr Albert G Bodine Polyphase sonic earth bore drill
US3291228A (en) * 1965-02-23 1966-12-13 Jr Albert G Bodine Sonic techniques and apparatus for earth boring
DE19950599A1 (en) * 1999-09-17 2001-03-22 Klemm Bohrtechnik Zweigniederl Drill for making holes for piles has drilling screw with cutter bit at end, hammer drill being mounted in hollow central tube of drilling screw which has air cushioning system to protect it against effect of drilling screw
WO2001083170A1 (en) * 2000-04-28 2001-11-08 Oy Robit Rocktools Ltd Method and arrangement for adjusting the percussion energy in a percussion drilling apparatus
EP1157787A1 (en) * 2000-05-18 2001-11-28 Günter Prof. Dr.-Ing. Klemm Method for soil and stoneworking and hydraulic impact tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012068771A1 (en) * 2010-11-22 2012-05-31 Tang Zhongsheng Impact-type hydraulic rock drilling machine
CN107842308A (en) * 2017-12-21 2018-03-27 无锡市安曼工程机械有限公司 Vibration type power head device

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