CN104594820B - Release assembly and the method forming Drilling instrument - Google Patents
Release assembly and the method forming Drilling instrument Download PDFInfo
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- CN104594820B CN104594820B CN201410599071.8A CN201410599071A CN104594820B CN 104594820 B CN104594820 B CN 104594820B CN 201410599071 A CN201410599071 A CN 201410599071A CN 104594820 B CN104594820 B CN 104594820B
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- release assembly
- drilling
- assembly
- intermediate member
- counter surface
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- 238000005553 drilling Methods 0.000 title claims abstract description 135
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- 238000003754 machining Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000004323 axial length Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000009527 percussion Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 239000013536 elastomeric material Substances 0.000 claims description 7
- 230000007480 spreading Effects 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 210000002445 nipple Anatomy 0.000 claims 5
- 230000009467 reduction Effects 0.000 abstract description 2
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- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
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Abstract
This invention relates to a kind of discharging assembly and a kind of method forming Drilling instrument, and this Drilling instrument is used for rock machining or cover layer Drilling.Described release assembly (18) is axially arranged between two Drilling tool components (14a, 14b).Described release assembly includes relieving mechanism, when the joint (15) being provided with connection screw thread (20,21) of Drilling tool component (14) rotates in opening direction (Ro), this relieving mechanism allows initial axial length (L1) to shorten (Ls).Then, described release assembly has second axial length (L2) of reduction and the frictional force in described joint reduces.
Description
Technical field
The present invention relates to releasing of a kind of Drilling instrument used in rock machining and cover layer Drilling
Put assembly.This release assembly is intended to for being axially arranged between two Drilling tool components,
These two Drilling tool components can link together in joint by means of connecting screw thread.
The invention further relates to a kind of use discharging assembly and a kind of side forming Drilling instrument
Method, this Drilling instrument is used for rock machining or cover layer Drilling.
Background technology
In mine and at other job site, drilling machine is used for boring Drilling to rock
In stone surface and soil.Drilling machine includes rotary apparatus, and this rotary apparatus is in the Drilling phase
Between rotary drilling boring tool.In many Drilling application, drilling machine also includes percussion device, should
Percussion device is for producing the shock pulse for instrument.Drilling instrument can be by several Drilling works
Tool parts composition, these several Drilling tool components are arranged and the most continuously by means of even
Connect screw thread to be connected to each other.It turned out after drilling process, it is difficult to open drill component it
Between connection screw thread.Connect screw thread and there is the tendency blocked.The joint blocked causes time and gold
The loss of money.
Summary of the invention
It is an object of the present invention to provide a kind of connection screw thread for being released between drill component
Device that is novel and that improve.A kind of novelty forming Drilling instrument of offer is provided
And improve method.
Release assembly according to the present invention is characterised by: the connection screw thread of joint has the first rotation
To；And the first counter surface and the second counter surface are designed with at least one side surface tilted,
The side surface of this inclination has second rotation direction oppositely oriented be connected screw thread first, thus when
First counter surface and the second counter surface rotate relative to one another on the closedown direction of the first rotation direction
Time, release assembly is arranged to elongated, and when the first counter surface and the second counter surface are the
When rotating relative to one another in the opening direction of one rotation direction, release assembly is arranged to shorten.
The method according to the invention is characterised by: arrange between continuous print Drilling tool component
Release assembly, this release assembly is above-mentioned release assembly.
The thought of disclosed solution is, Drilling instrument is provided with at least one release assembly.Release
Put the joint that assembly is disposed between two continuous axial Drilling tool components.Release assembly
There is axial length.Release assembly includes relieving mechanism, and this relieving mechanism allows, and connects when opening
During head, the axial length of release assembly shortens.
Additionally, connect the counter surface opening and closing side about them of screw thread and release assembly
To being contrary in terms of rotation direction.The connection screw thread of joint has the first rotation direction.First opposed table
Face and the second counter surface are designed with at least one side surface tilted, this at least one inclination
Side surface has second rotation direction oppositely oriented be connected screw thread first.Therefore, right when first
Put surface and time the second counter surface rotates relative to one another on the closedown direction of the first rotation direction, release
Put assembly and be arranged to elongated, and when the first counter surface and the second counter surface are in the first rotation direction
Opening direction on when rotating relative to one another, release assembly is arranged to shorten.In other words, when even
Connecing screw thread when being dextrorotation, side surface is left-handed, and vice versa.
The advantage of disclosed solution is, release assembly provides at continuous print Drilling tool component
Between connect screw thread being easily opened property.When making to release in response to rotation in the direction of the opening
When laying mechanism shortens, frictional force reduces and promotes to open.Additionally, the side surface tilted is prone to
Manufacture and the performance of they holding capacity and abrasion is good.
According to embodiment, release assembly include at least one first intermediate member and at least one the
Two intermediate members.Intermediate member both includes counter surface and contact surface, this counter surface
Facing with each other, this contact surface is in the face of the drill component of joint.Due to this embodiment, release group
Part is to separate and independent parts, and the Basic Design of Drilling tool component is not being made any repairing
In the case of changing, this separation and independent part can be placed on attachable drill component it
Between.
According to embodiment, release assembly includes a single intermediate member.So, pars intermedia
Part is provided with the first counter surface and contact surface.Additionally, in the attachable drill component of joint
One be provided with the second counter surface.Therefore, the second counter surface is the one of Drilling tool component
Body portion.Such as, when the number of parts or the axial length of release assembly need to minimize,
This embodiment can be useful.
According to embodiment, connect side surface the beating about them of the inclination of screw thread and counter surface
Open and close direction is contrary in terms of rotation direction.Connect screw thread and there is the first helical angle, and
The side surface tilted has the second helical angle.Second helix-angle ratio the first helical angle is big.Due to this
Embodiment, even one little rotary motion in the direction of the opening can reduce the tight of side surface
Gu axially shortening needed for power, and generation.But, the second helical angle should be less than the first spiral shell
5 times of swing angle.So, during the use of Drilling instrument, can avoid due to dynamic force
Being opened accidentally of the release assembly affected and cause.
According to embodiment, the second helical angle of the side surface of inclination is to connect the first spiral of screw thread
2 to 3 times of angle.When testing in practice, this embodiment has shown that it is available.
According to embodiment, the second helical angle of the side surface of inclination is less than the first spiral shell connecting screw thread
Swing angle.Therefore, this embodiment is contrary with the embodiment having been described above in before two sections.Releasing
Putting being opened accidentally in debatable situation of assembly, this embodiment can be available.
According to embodiment, the first counter surface is provided with one or more the first lateral surfaces, and
And second counter surface be provided with one or more the second lateral surfaces.Lateral surfaces is relative to inclining
Oblique side surface is horizontal.Lateral surfaces can be vertical with side surface in the axial direction
Or on desired angle direction.Second lateral surfaces faced by first lateral surfaces, and at it
One or more flexible member is arranged between.Flexible member occupy between lateral surfaces away from
From.Flexible member prevents lateral surfaces to be oriented to contact with each other.In other words, flexible member is permitted
Permitted opposing elements or counter surface is rotated relative to one another in their opening direction.
According to embodiment, above-mentioned flexible member is by the one or more of such as rubber or elastomeric polymer
Multiple elastomeric material is made.When rotating release assembly in the direction of the opening, can be by elastic material
Material temporarily compresses or reinvents.
According to embodiment, above-mentioned flexible member is independent component, and this independent component is installed in that
Between lateral surfaces faced by this.The flexible member being separately manufactured is readily placed at lateral surfaces
Between, and if it is required, can be changed it afterwards.Simplest reality as flexible member
Executing mode, independent flexible component can be rubber parts.
According to embodiment, one or two in opposed lateral surfaces is covered by elastomeric material,
This elastomeric material is used as flexible member.Between lateral surfaces, can exist and fill out with flexible material
The space filled.Alternatively, the face of abdomen lateral surfaces can be coated with elastomeric material.Elastomeric material can
To be the material of rubber or rubber like.Some polymer (such as polyurethane PU) are also suitable for
This purpose.In this embodiment, flexible member is arranged in advance or is integrally formed in release in advance
In assembly, thus allow easy and Fast Installation release assembly.
According to embodiment, lateral surfaces is spaced by means of one or more spring member
Turn up the soil holding.When towards opening direction rotate release assembly time, then spring member will compression and
Release assembly is allowed to shorten in the axial direction.In some cases, it is more convenient that use
Spring member rather than above-mentioned elastomeric material are as flexible member.
According to embodiment, the contact surface of intermediate member is provided with one or more friction area,
This one or more friction area has the coefficient of friction increased intentionally.Friction area can set
The surface roughness increased intentionally.Friction area can include, such as annular knurl.Alternatively,
Friction area, compared with the basic material of intermediate member, this friction can be covered with friction material
Material has bigger coefficient of friction.Contact surface can have the friction that one or several is less
Region, and one or more does not has an other region of disclosed feature, or alternatively,
Whole contact surface is processed into the coefficient of friction obtaining the increase for whole region.Friction zone
The thought in territory is, by increasing rubbing between intermediate member and attachable Drilling tool component
Wiping power, prevents from connecting being opened accidentally of screw thread.
According to embodiment, the contact surface of intermediate member has conical by its shape.Due to this cone shape
Shape, can increase the contact area between middleware and attachable Drilling tool component.In
Between parts on the periphery of intermediate member or alternatively can include tapered contact surface in inner circumferential.
According to embodiment, intermediate member has periphery and inner circumferential, and this periphery or inner circumferential are both wrapped
Include one or more curved surface.Periphery and inner circumferential can all have close-shaped.
According to embodiment, intermediate member has loop configurations, thus intermediate member have periphery and
Inner circumferential.Intermediate member can have, such as circular or elliptical shape.
According to embodiment, intermediate member is formed by two or more separating components.Intermediate member
It may be that such as sleeve-like part, this sleeve-like part is formed by two half-unit.
According to embodiment, the counter surface of intermediate member is formed by two or more separating components.
Middleware can be provided with several opposed parts, and these several opposed parts are installed on counter surface
Depression in.
According to embodiment, release assembly is intended in down-the-hole (DTH) Drilling.So, release
Put assembly to be disposed between drill bit assembly and down-the-hole percussion device.Drill bit assembly include drill bit and
Fastening member, this fastening member is used for securing drill bits.Down-the-hole percussion device is also referred to as DTH hammer.
According to embodiment, release assembly is used in DTH Drilling.Release assembly is disposed in brill
Between locking nut and the DTH hammer of head assembly.Locking nut is also referred to as driver replacing part.
According to embodiment, release assembly is intended in spreading Drilling (extension drilling).
So, release assembly is disposed between two continuous print Drilling tool components.Drilling tool part
Part is it may be that such as drill bit, drilling rod or drilling pipe.
According to embodiment, release assembly is intended to for rotating in Drilling.So, release assembly position
Between rotary unit and drill bit.Between rotary unit and drill bit, can exist and be provided with connection
One or more drilling pipe of screw thread or drilling rod.
According to embodiment, release assembly is intended in top hammer Drilling.So, release assembly position
Between drilling machine and drill bit, this drilling machine and drill bit are positioned at the opposite end of Drilling equipment.
Between drilling machine and drill bit, can exist and be provided with one or more drilling pipe connecting screw thread
Or drilling rod.
According to embodiment, release assembly does not has any connection screw thread.But, two Drilling instruments
Parts are provided with within a fitting for connecting the connection screw thread needed for two Drilling tool components.Cause
This, the surface of release assembly is not provided with connecting screw thread, and the surface of this release assembly is disposed against
Attachable Drilling tool component.Release assembly can be middleware, and this middleware is arranged in two
Between individual attachable Drilling tool component, and it is not secured to Drilling work by means of connection screw thread
Tool parts.
Embodiments disclosed above can be combined and be provided with disclosed essential feature to be formed
Suitable solution.
Accompanying drawing explanation
It is more fully described some embodiments in the accompanying drawings, wherein:
Fig. 1 is provided with the side view of the rock machining equipment of drilling unit；
Fig. 2 schematically shows the principle of DTH Drilling；
Fig. 3 is the schematic of release assembly and the side view of part section, and this release assembly is by cloth
Put between two continuous print Drilling tool components；
Fig. 4 is the release assembly schematic side elevation when being rotated in the direction of the opening；
Fig. 5 is the schematic side elevation of release assembly, and wherein spring is used as flexible member；
Fig. 6 is the schematic side elevation of release assembly, wherein flexible, shapable or elastic
Packing material be used as flexible member；
Fig. 7 a-7c schematically and in the axial direction illustrates intermediate member, and this intermediate member includes
Several sections, each of which in these several sections be provided with on its counter surface inclination side surface and
Lateral surfaces；
Fig. 8 a and Fig. 8 b schematically shows the contact surface of intermediate member, and this contact surface sets
There is one or more friction area；
Fig. 9 is the schematic side elevation of release assembly, and this release assembly includes two intermediate members,
And this release assembly is disposed in the joint between two drilling rods in the way of shoulder contact；
Figure 10 is the schematic side elevation of release assembly, and this release assembly only includes a pars intermedia
Part, and this release assembly is disposed in the joint between two drilling rods in the way of shoulder contact
In；
Figure 11 is the schematic side elevation of release assembly, and this release assembly is disposed in two drilling rods
Between joint coupling sleeve in, and this release assembly have bottom contact；
Figure 12 is the schematic side elevation of the drill bit assembly of DTH-Drilling device；
Figure 13 is the schematic of the joint between DTH-hammer and drill bit assembly and part section side
View, wherein release assembly has shoulder contact；
Figure 14 is the schematic of the joint of the replacement between DTH-hammer and drill bit assembly and local
Ground cross sectional side view, wherein release assembly has bottom contact；With
Figure 15 is the schematic of the joint of the replacement between DTH-hammer and drill bit assembly and local
Cross sectional side view, wherein release assembly has intermediate member, and this intermediate member is provided with towards Drilling
The tapered contact surface of tool component.
For clarity, accompanying drawing illustrates some enforcements of disclosed solution in a simplified manner
Example.In the accompanying drawings, identical reference represents identical element.
Detailed description of the invention
Fig. 1 illustrates rock machining equipment 1, and this rock machining equipment 1 includes rock drilling unit 2,
This rock drilling unit 2 can be connected to moveable carrier 4 by means of suspension rod 3.Drilling list
Unit 2 can include feed beam 5 and rock machining machine 6, and this rock machining machine 6 is supported on
On feed beam.Rock machining machine 6 can be moved on feed beam 5 by means of feed arrangement 7.
Rock machining machine 6 is included in the drillstock 8 at the front end of rock machining machine 6, and this drillstock 8 is used
In fastening means 9.Instrument 9 can include one or more drilling rod 10 and drill bit 11, this brill
11 far-ends being positioned at instrument 9.Rock machining machine 6 farther includes rotary apparatus 12,
This rotary apparatus 12 is used for rotating drillstock 8 and instrument 9, and this instrument 9 is connected to drillstock 8.
As rock machining rotation based on instrument R and feeding F, then this Drilling is referred to as rotating Drilling.
But, rock machining machine 6 can also include percussion mechanism or percussion device 13, and this impact fills
Put or percussion device 13 is for producing the shock pulse for instrument 9.When rock machining machine 6
When being provided with percussion device 13, compared to drill bit 11, this percussion device 13 is positioned at the phase of instrument 9
In opposite ends, then this Drilling is referred to as top hammer Drilling.
Instrument 9, the drilling rod 10 of instrument and drill bit 11 are Drilling tool components 14, Drilling instrument
Parts 14 axially and are continuously arranged.Joint 15 is in continuous print Drilling tool component 14
Between, it is used for making these parts interconnect.Joint 15 can include connecting screw thread, thus allows
Mount and dismount connect by screwing Drilling tool component 14 toward each other around the centrage of instrument 9
Head.It addition, by means of include connect screw thread joint 15, the front end of instrument 9 can be connected
To drillstock 8.The connection screw thread of joint 15 may block, and therefore joint 15 can be provided with at this
Release assembly described in application.
At drilling site, utilize one or more boring 16 of drilling unit 2 Drilling.Permissible
On vertical direction as shown in FIG. 1, or alternatively, in the horizontal direction or in angle
Drilling boring 16 on direction.Can be for rock material or soil pencil drilling drilling hole 16.
Fig. 2 illustrates the drilling unit 2 for DTH Drilling.Drilling unit 2 is different from Fig. 1
In drilling unit 2 so that relative to rotary apparatus 12 or rotary unit, percussion device 41 exists
The opposite end of instrument 9.During Drilling, percussion device 41 is in boring 16, and bores
11 can be directly connected to percussion device 41.By means of locking nut 37, can be by
Drill bit 11 or drill bit assembly are connected to percussion device 13, and this locking nut 37 also referred to as drives
Device replacing part.As shown in FIG. 2, instrument 9 can include one or more drilling rod 10 or
Drilling pipe, can be by this one or more drilling rod 10 by means of being provided with the joint 15 connecting screw thread
Or drilling pipe is continuously connected.It addition, by means of also including the joint 15 that connects screw thread, can be by
The rear end of instrument 9 is connected to drillstock 8.Between the front end of locking nut 37 and percussion device 41
Also it is with the joint 15 connecting screw thread.The connection screw thread of joint 15 may block, and therefore connects
15 can be provided with the release assembly described in this application.Instrument, spreading drilling pipe, drill bit group
Part and to clash into plunger be all Drilling tool component 14, this Drilling tool component 14 is by axially and one
Individual connect one ground arrange and used during Drilling.Joint 15 is in continuous print Drilling instrument
Between parts 14, it is used for making parts be connected to each other.
Fig. 3 open release assembly 18 in a simplified manner.In this embodiment, release assembly 18
It is disposed in the joint 15 between two continuous print axial Drilling tool component 14a and 14b,
In this special example, these two continuous print axial Drilling tool component 14a and 14b are drilling rods
10 and drill bit 11, this drilling rod 10 and drill bit 11 are provided with fastening part 19.Fastening part 19
Outer surface is provided with outer connection screw thread 20, and drilling rod 10 is provided with interior connection screw thread 21.Connect spiral shell
Stricture of vagina 20,21 is fitted to each other, and they have the first helical angle P1.Release assembly 18 is permissible
Including the first intermediate member 22a and the second intermediate member 22b, this first intermediate member 22a and
Two intermediate member 22b are independent with from Drilling tool component 14a, 14b.This intermediate member 22a,
22b has contact surface 24, and this contact surface 24 is in the face of Drilling tool component 14.Intermediate member
22a, 22b include opposing elements, and this opposing elements is facing with each other and includes relieving mechanism 25,
This relieving mechanism 25 allows initial original length L1 to shorten, in response in opening direction Ro
The rotation connecting screw thread 20,21 of joint 15.It is also shown in figure 3, is performing release
The axial length L 2 shortened after mechanism 25.The most also closedown direction Rc is denoted.
In the disclosed embodiment of Fig. 3, the opposing elements of relieving mechanism 25 is the first opposed table
Face 26 and the second counter surface 27, this first counter surface 26 and the second counter surface 27 are each other
Faced by.First counter surface 26 and the second counter surface 27 are designed with one or more
Side surface.Connect screw thread 20,21 and there is the first rotation direction (handedness), and opposed
The side surface of the inclination on surface 26,27 has the second rotation direction.When connecting screw thread and being dextrorotation,
The side surface then tilted is left-handed, and vice versa.The inclination of counter surface 26,27
Side surface has the second helical angle P2.As being shown clearly in figure 3, the second helical angle P2
Bigger than the first helical angle P1 connecting screw thread 20,21.
First counter surface 26 can include the first lateral surfaces 28, and the second counter surface
27 can include the second lateral surfaces 29, this first lateral surfaces 28 and second lateral surfaces 29
Facing with each other.Lateral surfaces 28,29 limits space 30, placement of flexible in this space 30
Component 31.Flexible member 31 occupies distance D1 between lateral surfaces 28,29.
When the first counter surface 26 and the second counter surface 27 are being closed on the Rc of direction toward each other
During rotation, the axial length of release assembly 18 is elongated.Discharge assembly 18 and then have initial long
Degree L1.When joint 15 open and the first counter surface 26 in opening direction Ro relative to
When two counter surfaces 27 rotate, the axial length of release assembly 18 shortens.Release assembly 18 enters
And there is the second axial length L 2, and as its result, the frictional force in joint 15 reduces,
Thus allow to be easily opened joint 15.Flexible member 31 allow intermediate member 22a, 22b towards
The relative motion of opening direction Ro.Flexible member 31 can be disposed in space 30 point
From parts.Flexible member is it may be that such as rubber parts.
To be further noted that, intermediate member 22a, 22b can be sleeve-like part, this set
Cartridge has external diameter 32 and internal diameter 33.But, other shape and profile are also possible.
Further embodiment can only include intermediate member 22a or 22b, this is because Drilling instrument
In parts 14a or 14b one can have the counter surface 26 or 27 of one.
In the diagram, release assembly 18 is rotated towards opening direction Ro, thus lateral surfaces
28 and 29 move towards each other, and the space 31 occupied by flexible member 30 has reduction
Distance D2.Depend on use structure and material, flexible member 31 can change its shape or
Can compress.In this embodiment, make flexible member 31 flatten, thus allow intermediate member 22a,
The relative motion of 22b, and make the length of release assembly 18 shorten Ls.It is shown in dash-dot lines
The initial position of one lateral surfaces 28.
In Figure 5, the flexible member 31 of release assembly 18 is the bullet being disposed in space 30
Spring.Spring is it may be that such as helical spring.
In figure 6, flexible member 31 is flexible material, this flexible material is cast, inject or
Otherwise it is arranged in space 30.The flexible material of packing space 30 is it may be that such as
Polyurethane.Lateral surfaces 28,29 can be combined, thus by pars intermedia by flexible material
Part 22a, 22b connect to form a unified object.Fig. 6 solves with disclosed in figs. 3-5
Scheme further differs in that, the side surface of the inclination of counter surface 26,27 is oppositely oriented.Can
The rotation direction of the side surface to tilt according to the rotation direction design connecting screw thread.In the figure of the application only
By means of example, rotation direction is shown.The rotation direction of release assembly 18 further feature to illustrating in the drawings
Not impact.
Fig. 7 a illustrates, several inclinations that intermediate member 22 can be included in counter surface 27
Side surface and lateral surfaces 29.In the solution illustrated in figure 7 a, counter surface 27 quilt
It is divided into 4 sections, but the number of section can be 2 or 3 or more than 4.
In fig .7b, intermediate member 22 is made up of two half-unit 23a, 23b.It is also possible that
Form the intermediate member of even more than two sections.Fig. 7 b illustrates further, can be with flexible material
Coating lateral surfaces 29, thus flexible member 31 is integrated into intermediate member.
Fig. 7 c illustrates further, and intermediate member 22 can have the shape different from base sleeve.
Intermediate member 23 can have slit 32, and thus periphery is not Guan Bi.On the other hand, release
The periphery putting assembly 18 needs not to be circle, but can have any suitable shape.
Fig. 8 a and Fig. 8 b illustrates, the contact surface 24 of intermediate member 22 can include one or
More friction areas 33, compared to the coefficient of friction of the basic material of intermediate member, this
Or more friction area 33 is respectively provided with the coefficient of friction of increase.Friction area 33 can include
Annular knurl or other surface process, or alternatively, friction area 33 can include coat.
Fig. 9 illustrates release assembly 18, and this release assembly 18 is disposed in the Drilling instrument of spreading
Two drilling rods or drilling pipe between joint 15 in.First Drilling tool component 14a can have
Shoulder 34, release assembly 18 is arranged against this shoulder 34.
Figure 10 illustrates the alternate embodiment of the solution of Fig. 9.Release assembly 18 only includes one
Individual intermediate member 22b, this is because the first counter surface 26 and the first lateral surfaces 28 are by one
Form the end face of the first Drilling tool component 14a.
Figure 11 illustrates joint 15, and wherein the second Drilling tool component 22b includes branch sleeve 35.
Release assembly 18 may be located at the bottom of branch sleeve 35.
Fig. 9-11 can relate to top hammer solution, wherein connects screw thread and is typically left-handed, because of
The inclined surface of this release assembly 18 is dextrorotation.
The open Drilling tool assembly 36 of Figure 12, it includes drill bit 11 and locking nut 37.Drill bit
11 can include fastening part 19, can arrange locking nut 37 around this fastening part 19
Fastening part 38.Fastening part 38 is provided with connection screw thread 20.Locking nut 37 can be further
Including retained part 39.Shock surface 40 is in the far-end of the fastening part 19 of drill bit 11,
For receiving shock pulse.During the operation of percussion device 41, fastening part 19 can phase
Locking nut 37 is slid axially.
Figure 13 illustrates, release assembly 18 can be placed on down-the-hole percussion device 41 and Drilling work
Between tool assembly 36.DTH percussion device 41 includes clashing into plunger 42, this shock plunger 42
Arrange in order to the shock surface 40 clashing into Drilling tool assembly 36.The company of Drilling tool assembly 36
Connect the connection screw thread that screw thread 20 is connected to be arranged on the inner surface of percussion device 41.According to
Principle above-mentioned in the application, release assembly 18 allows to be easily opened connection screw thread.
In fig. 14, compared to the solution of Figure 13, release assembly 18 is positioned at alternative site
In.Release assembly 18, in percussion device 41, is in holding element 43 and locking nut 37
Fastening part 38 end surfaces 44 between.In fig. 14, release assembly 18 has and connects
The bottom contact of Drilling tool component 14a, 14b contact of 15, and use shoulder in fig. 13
Portion contacts.
In figs. 13 and 14, the second intermediate member 22b of release assembly 18 can be locking
The integral part of nut 37.So, the upper surface of retained part 39 can include such unit
Part, needs this element as a part for relieving mechanism.
Figure 15 illustrates joint 15, and this joint 15 has and shown in the solution of Figure 13
Almost identical feature.But, in fig .15, the second intermediate member 22b of release assembly 18
Having tapered contact surface 24t, this tapered contact surface 24t is against the clamping part of locking nut 37
Divide 39.Alternatively or additionally, the contact surface 24 of the first intermediate member 22a can also have cone
Shape shape.So, certainly, the correspondence in the face of discharging assembly of Drilling tool component 14a, 14b
Surface is also required to be taper.Furthermore, it is possible to consider by disclosed tapered contact surface the most extremely
Apply less in the solution of Fig. 3,9 and 10.
Figure 12-15 relates to DTH-and hammers solution into shape, wherein connects screw thread and is typically dextrorotation, because of
The inclined surface of this release assembly 18 is left-handed.
Accompanying drawing and associated description are intended only to illustrate the thought of the present invention.In terms of its details, this
Bright can change in the range of claims.
Claims (14)
1. a release assembly for Drilling instrument, described Drilling instrument is used for rock machining and covering
Layer Drilling,
Wherein said release assembly (18) is for being axially arranged at two Drilling tool components
(14) between, said two Drilling tool component (14) can by means of connect screw thread (20,
21) link together at joint (15) place；
Described release assembly (18) includes the first opposing elements and the second opposing elements；
Described first opposing elements and described second opposing elements are to include the first counter surface (26)
With the counter surface of the second counter surface (27), described counter surface is facing with each other；
During at least one in described first opposing elements and described second opposing elements is disposed in
Between in parts (22), described intermediate member (22) is only with described Drilling tool component (14)
Vertical；
Described intermediate member (22) has contact surface (24), described contact surface (24)
Towards described Drilling tool component (14)；And
Relieving mechanism is formed between described first opposing elements and described second opposing elements, rings
Ying Yu opening direction (Ro) upper rotate described joint (15) described connection screw thread (20,
21), described relieving mechanism allows the axial length (L1) of described release assembly (18) to shorten
(L2)；
It is characterized in that:
The described connection screw thread (20,21) of described joint (15) has the first rotation direction；And
Described first counter surface (26) and described second counter surface (27) are both provided with
At least one side surface tilted, at least one side surface tilted described has and is connected with described
The described first second oppositely oriented rotation direction of screw thread (20,21), thus when described first right
Put surface (26) and described second counter surface (27) in the closedown direction of described first rotation direction
(Rc), when rotating relative to one another on, described release assembly (18) is arranged to elongated, and works as institute
State the first counter surface (26) and described second counter surface (27) in described first rotation direction
When rotating relative to one another in opening direction (Ro), described release assembly (18) is arranged to shorten
(Ls)。
Release assembly the most according to claim 1, it is characterised in that:
Described release assembly (18) includes at least one first intermediate member (22a) and at least one
Individual second intermediate member (22b), at least one first intermediate member (22a) described and described extremely
Few second intermediate member (22b) both includes counter surface (26,27) facing with each other,
And at least one first intermediate member (22a) described and at least one second intermediate member described
(22b) both include that contact surface (24), described contact surface (24) connect towards described
The described Drilling tool component (14) of head (15).
Release assembly the most according to claim 1, it is characterised in that:
Described release assembly (18) includes a single intermediate member (22)；
Described intermediate member (22a or 22b) is provided with described counter surface (26 or 27) and institute
State contact surface (24)；And
In the attachable described Drilling tool component (14a or 14b) of described joint (15)
One is provided with described second counter surface (27), and the most described second counter surface (27) is
The integral part of described Drilling tool component (14a or 14b).
4. according to the release assembly described in any one in claims 1 to 3, it is characterised in that:
Described connection screw thread (20,21) has the first helical angle (P1)；
The side surface of described inclination has the second helical angle (P2)；And
Described second helical angle (P2) is bigger than described first helical angle (P1).
5. according to the release assembly described in any one in claims 1 to 3, it is characterised in that:
Described first counter surface (26) is provided with at least one first lateral surfaces (28), and
And described second counter surface (27) is provided with at least one second lateral surfaces (29), described
At least one first lateral surfaces (28) and at least one second lateral surfaces (29) described are all
Horizontal relative to the side surface of described inclination；
At least one first lateral surfaces (28) described is in the face of at least one second horizontal table described
Face (29)；And
At least one flexible member (31) is at least one first lateral surfaces (28) described
And between described at least one second lateral surfaces (29), therefore occupy in described lateral surfaces
Distance (D1) between (28,29).
Release assembly the most according to claim 5, it is characterised in that:
At least one independent flexible member is used as described flexible member (31).
Release assembly the most according to claim 5, it is characterised in that:
At least one in described lateral surfaces (28,29) is covered by elastomeric material, described bullet
Property material be used as described flexible member (31).
8. according to the release assembly described in any one in claims 1 to 3, it is characterised in that:
At least one contact surface (24) is provided with at least one friction area (33) or with material
Covering, described at least one friction area (33) has the surface roughness increased wittingly,
Described material has the coefficient of friction bigger than the basic material of described intermediate member (22).
9. according to the release assembly described in any one in claims 1 to 3, it is characterised in that:
At least one contact surface (24t) is taper.
10., according to the use of the release assembly described in any one in aforementioned claim, it is special
Levy and be:
Described release assembly (18), wherein said release assembly (18) is used in down-the-hole Drilling
It is disposed between drill bit assembly (36) and down-the-hole percussion device (41), and wherein said
Drill bit assembly (36) includes drill bit (11) and fastening member (37,38,39,43), institute
State fastening member (37,38,39,43) to be used for fastening described drill bit (11).
11. uses according to claim 10, it is characterised in that by described release assembly
(18) locking nut (37) and the described down-the-hole that are arranged in described drill bit assembly (36) clash into
Between device (41).
12. according to the use discharging assembly described in any one in aforementioned claim 1 to 9,
It is characterized in that:
Described release assembly (18), wherein said release assembly (18) is used in spreading Drilling
It is disposed between two continuous print Drilling tool component (14).
13. according to the use discharging assembly described in any one in aforementioned claim 1 to 9,
It is characterized in that:
Described release assembly (18), wherein said release assembly (18) is used in rotating Drilling
Between rotary unit (12) and drill bit (11).
14. 1 kinds are formed for rock machining or the method for the Drilling instrument of cover layer Drilling；Institute
The method of stating includes:
At least two Drilling tool component (14) is made to be connected to each other by means of nipple (15)
And separation, described nipple (15) includes connecting screw thread (20,21)；
Described Drilling tool component (14) is made to rotate relative to each during connecting and separating；
By release assembly (18) being arranged between continuous print Drilling tool component (14)
Described joint (15), it is ensured that opening of described nipple (15)；And
Described in opening direction (Ro) the described nipple of upper rotation (15) and allowing simultaneously
The axial length (L1) of release assembly (18) shortens, thus in described nipple (15)
In frictional force reduce；
It is characterized in that:
Described release assembly, described release group is arranged between described continuous print Drilling tool component
Part is release assembly according to claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13190766.9A EP2868861B1 (en) | 2013-10-30 | 2013-10-30 | Release assembly and method of forming a drilling tool |
| EP13190766.9 | 2013-10-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104594820A CN104594820A (en) | 2015-05-06 |
| CN104594820B true CN104594820B (en) | 2017-01-04 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2067377A (en) * | 1935-04-02 | 1937-01-12 | Burns Erwin | Safety joint |
| US2819877A (en) * | 1954-05-20 | 1958-01-14 | Tripod Oil Tool Co | Safety joint and jarring tool |
| US2937854A (en) * | 1954-12-06 | 1960-05-24 | Myron M Kinley | Safety joints |
| US3248129A (en) * | 1963-08-14 | 1966-04-26 | Cicero C Brown | Dual release safety joint |
| US4601343A (en) * | 1985-02-04 | 1986-07-22 | Mwl Tool And Supply Company | PBR with latching system for tubing |
| CN1535348A (en) * | 2001-07-19 | 2004-10-06 | ������˹�����տ�MAI����˾ | Connecting anchoring rod to drilling tool |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2067377A (en) * | 1935-04-02 | 1937-01-12 | Burns Erwin | Safety joint |
| US2819877A (en) * | 1954-05-20 | 1958-01-14 | Tripod Oil Tool Co | Safety joint and jarring tool |
| US2937854A (en) * | 1954-12-06 | 1960-05-24 | Myron M Kinley | Safety joints |
| US3248129A (en) * | 1963-08-14 | 1966-04-26 | Cicero C Brown | Dual release safety joint |
| US4601343A (en) * | 1985-02-04 | 1986-07-22 | Mwl Tool And Supply Company | PBR with latching system for tubing |
| CN1535348A (en) * | 2001-07-19 | 2004-10-06 | ������˹�����տ�MAI����˾ | Connecting anchoring rod to drilling tool |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20171030 |