CN85106898A - The linkage that is used for the extension drill equipment of percussive drilling - Google Patents

The linkage that is used for the extension drill equipment of percussive drilling Download PDF

Info

Publication number
CN85106898A
CN85106898A CN 85106898 CN85106898A CN85106898A CN 85106898 A CN85106898 A CN 85106898A CN 85106898 CN85106898 CN 85106898 CN 85106898 A CN85106898 A CN 85106898A CN 85106898 A CN85106898 A CN 85106898A
Authority
CN
China
Prior art keywords
linkage
pulse
drill
drill set
compression
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN 85106898
Other languages
Chinese (zh)
Inventor
克里斯特·盖斯塔夫森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Secoroc (se) Box 502 S-77301 Fagensta Sweden AB
SECOROC AB
Original Assignee
Secoroc (se) Box 502 S-77301 Fagensta Sweden AB
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 Secoroc (se) Box 502 S-77301 Fagensta Sweden AB filed Critical Secoroc (se) Box 502 S-77301 Fagensta Sweden AB
Priority to CN 85106898 priority Critical patent/CN85106898A/en
Publication of CN85106898A publication Critical patent/CN85106898A/en
Pending legal-status Critical Current

Links

Images

Abstract

The linkage that is used for percussive drilling extension drill equipment is provided with except transmitting on the direction of drill bit the compression pulse in drill set, also by being reflected in the device (2,3 that on the direction that deviates from compression pulse the stretching pulse is changed into compression pulse; 2,24; 2,30).Linkage preferably includes axially movable (1 mutually; 21,22; 22,27; 32,36) and be provided with matching surface (2) and the part (3 that is connected movement parts; 24; 30).This surface is close under compressive stress mutually.Under tensile stress, be separated from each other.Linkage preferably also comprises the device (19) of the kinetic energy that absorption is produced by torque pulse in the drill set in connection.

Description

The linkage that is used for the extension drill equipment of percussive drilling
The present invention relates to be used for the linkage of the extension drill equipment of percussive drilling (hammer drill), this device is set in place in the drill set between rig and drill bit.
Percussive drilling is for example holed on rock, always produces compression and tensile stress on pipe that is used for impact energy and moment of torsion are delivered to drill bit or bar.Compression and tensile stress are transmitted in drill set back and forth with the form of pulse.These compressions and tensile stress usually include the pulse of reflection, because this pulse is to produce by the reflection in the linkage of tube connector in drill set or bar and connection drill set and drill bit.The big tensile stress that reflects back with the stretching impulse form at first is created on the drill bit.At the drill bit place, this phenomenon can be done following description on principle, when being created in compression pulse on the rig at first and arriving drill bit, a part of compression pulse always reflects back by the form of drill set with the stretching pulse, catalase incomplete more, the stretching pulse is just big more.For example, in invalid impact once, (i.e. the once not impact of work done, this impact are to produce when drill bit is run into crack on the rock or cavity) all compression pulses reflects back with the form of the stretching pulse of identical size.
In all at present known linkages, for example the most frequently used linkage, owing to for example being convenient to the reason in the such actual use of jumping chisel equipment dismounting, linkage all has the screw thread that is used for connecting extension drill equipment parts (pipe or bar and drill bit), and linkage can be more or less passed through in pulse smoothly.Pulse, the stretching pulse of compression pulse and reflected back all is to be produced by the impact of rig, therefore, they what can expeditely in drill set, transmit repeatedly back and forth, and under the rubbing action of the hole wall that the distinctive damping action of material and drill set and brill are crossed, decay gradually.This phenomenon repeats again and again between twice impact of rig and is produced very high reciprocating frequence (be generally 30 to 40Hz also have 150Hz exist) by impact, so drill set can be born repeatedly fatigue and cyclic at short notice.
These pulses of transmitting back and forth in drill set cause wearing and tearing and fracture in drill set, the pulse that particularly stretches can cause too early fatigue fracture.
Up to the present, do not occur as yet any can overcome above-mentioned in percussive drilling with drill set in pulse transmit the means of relevant problem.But, concerning rotary drilling, have special construction and can eliminate the linkage (being the pipe snubber) of vibration and come out, for example see Norw P B-146550 number and United States Patent (USP) A-3608297 number French Patent (FRP) A1-2432081 number.But, these linkages are not suitable for percussive drilling, this is owing to will sponge the initial greatly impact energy and the pulse of reflection in it uses, make the efficient of percussive drilling low to unacceptable degree, and linkage can damage owing to producing frictional heat and other reasons very soon.
The invention provides the linkage of the extension drill equipment that is used for percussive drilling, this device solves the problems referred to above.The present invention be characterised in that linkage have except in drill set towards the drill bit direction is transmitted compression pulse, can also be by being reflected in the device that towards the rightabout of compression pulse the stretching pulse is changed into compression pulse in the drill set.
Like this, by linkage of the present invention, harmful stretching pulse has changed into useful compression pulse.In other words, linkage of the present invention has such structure, and it makes useful energy (compression pulse) by useless energy (stretching pulse) is changed into useful energy.With adopt known linkage to compare its efficient can be improved.And, harmful tensile stress total value is descended greatly and then the life-span of drill set is improved greatly by the stretching pulse being changed into compression pulse.
In a preferred embodiment, linkage of the present invention is characterised in that, this device comprise one will can move mutually vertically the parts that connect together of parts and the surface of mutual moving component with cooperation, this surface is in the state that is close to mutually under the pressure effect of compression pulse, under the stretching impulse action, be separated from each other mutual moving component preferably with the coaxial setting of drill set.This point can be seen clearly from several useful embodiment, has spoken of wherein several embodiment in the claim of back.
Toward compound compression and stretching pulse, in drill set, also there is shear stress except described.The shearing that exists with the stress form is to produce by be delivered to the moment of torsion on the drill bit and the torque pulse that is caused comprising drill bit rotates by multiple reason of stack on rock.Torque pulse with regard to its essence, is the dynamic stress that occurs with the shear stress form, can both be added at any time in compression and the stretching pulse, therefore, also can play certain influence to the fatigue of drill set.In the preferred embodiment of the invention, also considered these torque pulse, by being set in linkage, some device is absorbed in the linkage in the drill set by the kinetic energy that produces in the torque pulse.
Some embodiment of linkage of the present invention make following detailed description with reference to the accompanying drawings, wherein:
Fig. 1, Fig. 2, Fig. 3, Fig. 7, Fig. 9, Figure 10 and Figure 13 have shown the axial, cross-sectional view of the different embodiment of linkage of the present invention, Fig. 4, Fig. 5, Fig. 6, Fig. 8, Figure 11, Figure 12 and Figure 14 have shown respectively the cross-sectional view according to the linkage of Fig. 1, Fig. 2, Fig. 3, Fig. 7, Fig. 9, Figure 10 and Figure 13.Fig. 3 a is the lateral view that insertion moment embodiment illustrated in fig. 3 is transmitted part.
Part in addition identical among each figure is represented with same reference number.
As mentioned above, flesh and blood of the present invention provides a kind of linkage, this device is except transmitting the compression pulse on the direction of drill bit in drill set, can also by being reflected on the direction that deviates from compression pulse the stretching pulse be changed into compression pulse in drill set, accompanying drawing is the example how several detailed descriptions realize above-mentioned functions.
Fig. 1 extremely linkage shown in Figure 8 has two tube-like pieces 1, is provided with the internal thread 14 that is connected with drill set in its outer end.Relative pipe end is close to mutually along shock surface 2.Pipe 1 links together by shock surface 2 vertically by pull bar 3 and packing ring 4.The spring that is made of for example spring washer 6 is set in place between the nut 5 and packing ring 4 of tie rod end.Pipe 1 can interconnect not applying under the prestressed situation, also can obtain adjustable axial prestress by fastening nut 5.Linkage also comprises a moment transmission part 7 that can move vertically, hereinafter will be described in detail this part.
For transmitting compression pulse and the stretching pulse being changed into compression pulse, linkage will be worked in a manner described.
Connect and when shock surface 2 advances when the stretching pulse enters (for example from drill bit), the stretching pulse can make pull bar 3 and the moment that can move is vertically transmitted part 7 and become a petty action attitude resistance piece.Pipe 1 separates at shock surface 2 places under the stretching impulse action.Like this, stretching pulse meeting makes the shock surface of separation become Free Surface and therefore the stretching pulse is changed into compression pulse, and this compression pulse is approximately to reflect back with the identical mode of freely impacting of the above-mentioned drill bit that produces when compression pulse changes into the stretching pulse.On the other hand, when compression pulse moves facing to shock surface 2, this surface compresses mutually, main compression pulse can have no the ground of variation to be passed through, this point is very important, because the main pulse from rig is a compression pulse, an indispensable requirement of linkage being transmitted impact energy is that compression pulse will unhinderedly pass through.
Like this, the stretching pulse is hindered by linkage and the motion in drill set.Therefore, the stress in the drill set has significantly reduced, and simultaneously, by useless stretching pulse is changed into compression pulse the efficient of percussive drilling has been improved.
Fig. 9 to Figure 12 is the several embodiment in addition that transmit compression pulse and the stretching pulse is changed into the linkage of compression pulse.In Fig. 9 and Figure 11, shown linkage along drill set situation in place, in Figure 10 and Figure 12, shown being connected of linkage and drill bit.
In Fig. 9 and embodiment shown in Figure 11, an end of linkage is provided with the screw thread 14 corresponding to the screw thread in the previous embodiment 14, the drill set the pipe 22 and shape of opposite end 21 is suitable for packing into.The end surfaces and the shoulder on the linkage 23 of pipe 22 join, and above-mentioned end surfaces and shoulder constitute the shock surface corresponding to the shock surface 2 of previous embodiment.Laterally voussoir 24 is installed in the groove 25 of pipe 22, is same as the interior at interval voussoir part of groove 26 that is installed on the end 21.
In the embodiment according to Figure 10 and Figure 12, chock 24 is installed in the gap of the groove 26 on the lining 28 of the groove 25 of drill set pipe 22 and drill bit 27.Shock surface 2 forms between the shoulder 29 of pipe 22 end face and drill bit.
With Fig. 1 to king-rod embodiment illustrated in fig. 83 different to be Fig. 9 be made of chock 24 to the connector in embodiment illustrated in fig. 12.Fig. 9 is to embodiment illustrated in fig. 12 structurally extremely embodiment illustrated in fig. 8 more simple than Fig. 1, but less better from dynamic (dynamical) viewpoint, this be since from the main compression pulse of the part of rig can owing to part among Fig. 3 21 with 22 and Figure 10 in part 22 is different with 27 cross-sectional area reflects back.But separate owing to hit the surface, so the conversion of stretching pulse and Fig. 1 are to embodiment illustrated in fig. 8 effectively same at the stretching pulse undershoot.
Though do not express among the figure, it is possible for example having the embodiment that several chocks and chock and Fig. 1 use together to king-rod shown in Figure 8, wherein, has been omitted or only has been contained in an end of bar corresponding to the spring of spring 6.
Except with impact energy from rig is delivered to drill bit, the structure of linkage also must have the ability of transmitting torsion.
In embodiment illustrated in fig. 8, the moment transmission between the pipe 1 is finished by torque transfer member 7 and wedge or ball at Fig. 1.Fig. 1 and embodiment illustrated in fig. 4 in, longitudinal wedge 8 is loaded on moment and transmits in the wedge groove of part and pipe 1.Fig. 2 and embodiment illustrated in fig. 5 in, chock 8 is replaced by flexible rod or wedge 15.Fig. 3 and the chock that has corresponding to wedge 8 among Fig. 1 and Fig. 3 embodiment illustrated in fig. 6.Fig. 7 and embodiment illustrated in fig. 8 in, wedge 8 is replaced by horizontal chock 20.Fig. 9 and embodiment illustrated in fig. 12 in, respectively connector 21,22 and 22,27 chock 24 have also constituted moment transmitting device.
As mentioned above, not only produce axial compression and stretching pulse in drill set, and produce torque pulse, it appends in the axial pulse, thereby the fatigue of drill set is played a role.Therefore, in a preferred embodiment, linkage of the present invention just can accomplish the task satisfactorily or provide part to eliminate or all eliminate the device of torque pulse.
Fig. 3 and Fig. 6 have shown perfect embodiment.It is that part 16 and 17 is formed by two parts that moment is transmitted part 7, and these two by lining 18 connections that are fixed on part 16 and insert 17.One end of lining 18 is fixed on the device, this apparatus surface and part 17 adjacency, and its cam-like profile cooperates with part 17 corresponding profiles.Under torsion pulse and torsional interaction, part 16 can reverse relatively with 17, and wherein, part 17 is forced to move along cam curve, and compressing member 16 then, spring part 19 is compressed and absorbs the kinetic energy that torque pulse produces.Moment is transmitted part 7 and is represented with lateral view Fig. 3 a separately.
Fig. 2 and embodiment illustrated in fig. 5 in, elasticity roller or chock are eliminated a part of torque pulse.
Though still they also can be provided with the spring assembly of the kinetic energy that produces as the absorption torque pulse to the not shown spring assembly of other embodiment of this paper certainly.
Fig. 1 to Fig. 8 has shown that also moment transmits part 7 and be provided with short column or the packing ring 9 that steel, antifriction metal (AFM) or polymer are made, and it can stop moment to transmit part 7 and manage burning between 1.Moment is transmitted part 7 and is actually and can moves, and this motion is by the spring on the bar 3 10 and card Figure 11 control.In operation, because by compression pulse, bar makes moment transmit the axially-movable that part produces vibration on the direction of drill bit moment transmission part 7 being applied impact force, it prevents local pyrexia together with short column and packing ring 9.Because moment is transmitted the oscillating movement of part 7, also can be at wedge 8, short column 9 and manage 1 between keep the lubricated thin layer of a supporting.To moment transmit impact force that part 7 applies be by from a part of compressive stress of rig by packing ring 4 to bar 3, collar 11 impact moments by bar 3 transmit that part 7 obtains again.Fig. 1 to Fig. 8 has shown that also bar 3 and packing ring 4 are respectively equipped with flushed channel 12 and 13 freely to pass through scouring media, as air.Between managing 1 inner surface and installing 7 is a gap, wherein can be by scouring media with cooling unit 7, and wedge 8 and pipe 1.
Several embodiment of linkage of the present invention have more than been described, this linkage have with bar 3 or wedge 24 forms respectively connecting axle to movable 1 and 21,22 and 22,27 interconnecting piece mutually.But connector also can be positioned at the outside, such example by Figure 13 and Figure 14 to display.Here, connector comprises overcoat 30, and overcoat top is threaded 31 and twists with drill set bar 32 and to close, and its underpart has internal thread 33 and twists with nut type spare 34 and close the flange 35 of part 34 and the lower surface adjacency of overcoat.Nut 34 is through on the bar 36, and bar 36 has flange 37 and has prolongation 38 as hexagonal transverse cross section, and this part overcoat 30 of packing into has in the hole 39 of corresponding cross section.Bar 38 can be connected on the such part of drill bit for example.Spring part 40 between nut 34 and flange 37 is installed in the gap between overcoat 30 and the bar 36, and spring part can apply prestressing force by nut.The end face of the end face of drill set bar 32 and prolongation 38 has formed the shock surface corresponding to shock surface in the previous embodiment 2.Prolongation 38 itself also is the moment transmitting device that transmits part 7 and wedge 24 corresponding to moment in the previous embodiment.
Scope and spirit of the present invention should not be limited to above-mentioned narration and illustrated embodiment but can realize by other embodiment within the scope of the following claims yet.

Claims (12)

1, be used for percussive drilling by on the jumping chisel equipment and be installed in linkage between drill set drill bit and the rig, it is characterized in that: linkage is provided with except transmitting the compression pulse on the direction of drill bit (27) also by being reflected in the device (2,3 that on the direction that is deviating from compression pulse in the drill set stretching pulse is changed into compression pulse in drill set; 2,24; 2,30).
2, according to the linkage of claim 1, it is characterized in that: described device comprises that at least one connects the part (1 that can move mutually along axle; 21,22; 22,27; 32,36) part (3; 24; 30) reach the interactive surfaces (2) of the part of motion mutually, this surface is forced to be close to mutually under compression pulse and is separated from each other under the stretching pulse.
3, according to the linkage of claim 2, it is characterized in that: above-mentioned (1; 21,22; 22,27; 32,36) coaxial with drill set.
4, according to the linkage of claim 2 or 3, it is characterized in that: connector (3,30) connects above-mentioned mutual movement parts by produce the prestressing force activating pressure between surface (2).
5, according to the linkage of claim 4, it is characterized in that: have the prestressed device (5 of adjustment; 34).
6, according to linkage any in the claim 2 to 5, it is characterized in that: above-mentioned connector comprises the pull bar (3) that axially is positioned at drill set.
7, according to linkage any in the claim 2 to 5, it is characterized in that: above-mentioned connector comprises cable wire.
8, according to linkage any in the claim 2 to 5, it is characterized in that: above-mentioned connector comprises a wedge with respect to the drill set lateral means (24) at least, and this forelock is at part (21,22; 22,27) one of go up and drill set axially on relatively another part can move.
9, according to linkage any in the claim 2 to 5, it is characterized in that: above-mentioned connector comprises the cover 30 that is positioned at part (32,36) outside.
10, according to the linkage of aforementioned any claim, it is characterized in that: have the device that absorbs the kinetic energy that in linkage, produces owing to torque pulse in the drill set.
11, according to the linkage of claim 10, it is characterized in that: two parts (16,17) can relatively rotate, and elastic component (19) absorbs by these two kinetic energy that relatively rotate generation.
12, according to linkage any in the claim 2 to 11, it is characterized in that: moment transmitting device (7,24,38) is positioned at the part (1 that can move mutually vertically; 21,22; 22,27; 32,36) between.
CN 85106898 1985-09-13 1985-09-13 The linkage that is used for the extension drill equipment of percussive drilling Pending CN85106898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 85106898 CN85106898A (en) 1985-09-13 1985-09-13 The linkage that is used for the extension drill equipment of percussive drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 85106898 CN85106898A (en) 1985-09-13 1985-09-13 The linkage that is used for the extension drill equipment of percussive drilling

Publications (1)

Publication Number Publication Date
CN85106898A true CN85106898A (en) 1987-03-11

Family

ID=4795343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 85106898 Pending CN85106898A (en) 1985-09-13 1985-09-13 The linkage that is used for the extension drill equipment of percussive drilling

Country Status (1)

Country Link
CN (1) CN85106898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104018779A (en) * 2014-06-27 2014-09-03 西南石油大学 Underground power drilling tool with peripheral impact function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104018779A (en) * 2014-06-27 2014-09-03 西南石油大学 Underground power drilling tool with peripheral impact function

Similar Documents

Publication Publication Date Title
CN1111066A (en) Shock absorbing assembly
US5803182A (en) Bidirectional hydraulic jar
EP2425937A1 (en) Hand-held machine tool
DE3505181A1 (en) VIBRATING HAND TOOL
AU2002310787B2 (en) Rock drill
CN1522334A (en) Impact device
CN85106898A (en) The linkage that is used for the extension drill equipment of percussive drilling
CN1065942C (en) Impact hammer
US4619334A (en) Joint device in extension drill equipment for percussive drilling
WO2015169515A1 (en) Hand-held power tool
EP1584422B1 (en) Method and device for reducing the pressure peaks in a hand tool with an electropneumatic percussion system
WO1992009381A1 (en) Twisted percussion drill rod and manufacturing method
US5153975A (en) Apparatus for effecting bedding-in by screwing and unscrewing of screwthreaded joints for the assembly of tubes
CN1056555A (en) Impact and the self-con-tained unit that rotates
DE69923812T2 (en) DEVICE FOR RETURNING FROM A PIPE TRANSLATION WASHED IN THE HOIST
CN219262348U (en) Underground fracturing monitor with guide function
CN2697300Y (en) Shock-damping dropping resisting device for sucker rod
CN219491135U (en) Drill rod structure of breaking hammer
DE102004021905B3 (en) Vibration damper, for a pneumatic tool, has an outer piston within a cylinder as a high frequency damper and an inner piston as a low frequency damper with return and pressure springs as a complete damper unit
CN200943263Y (en) Grouting device capable of continuous pressurization
RU1815609C (en) Method of testing concrete compressive strength
SU1036535A1 (en) Machine for chopping out logs
RU2005164C1 (en) Method of correction of sticking drill pipe string and device for its implementation
SU1530746A1 (en) Mechanical jar
SU817204A1 (en) Device for drilling and preventing sticking of tools

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C01 Deemed withdrawal of patent application (patent law 1993)
WD01 Invention patent application deemed withdrawn after publication