CN208686324U - A kind of down-the-hole drill and its swivel joint - Google Patents
A kind of down-the-hole drill and its swivel joint Download PDFInfo
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- CN208686324U CN208686324U CN201821554492.9U CN201821554492U CN208686324U CN 208686324 U CN208686324 U CN 208686324U CN 201821554492 U CN201821554492 U CN 201821554492U CN 208686324 U CN208686324 U CN 208686324U
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- main shaft
- hole drill
- air inlet
- swivel joint
- outer tube
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Abstract
The utility model discloses a kind of down-the-hole drill swivel joints, comprising: main shaft is set between the drilling rod of down-the-hole drill and power head, and axially extending bore is equipped in the one end being connected with the drilling rod, is used for the Drill-pipe conveyed high pressure gas；It, which is radially additionally provided with, is connected and through the first air inlet of the main shaft entered for external high pressure gas with the axially extending bore；When working condition, the main shaft is turned round with the drilling rod；Outer tube is socketed on the outside of the main shaft, is provided with bearing on the inside of both ends；Be additionally provided with the second air inlet on the outer tube, be used to external high pressure gas being sent into first air inlet, the outer tube radially inside on be additionally provided with the ring-shaped ventilation slot communicated with first air inlet and second air inlet.Above-mentioned swivel joint is more convenient and practical.The invention also discloses a kind of down-the-hole drill including above-mentioned swivel joint, advantages having the same.
Description
Technical field
The utility model relates to mining technical field more particularly to a kind of down-the-hole drills.The utility model further relates to
A kind of down-the-hole drill swivel joint.
Background technique
Common down-the-hole drill includes impactor, drilling rod, power head and propulsion motor at present, and power head is promoting when construction
Under motor effect, push drilling rod to drive impactor to rock impact drilling operation.Concrete operating principle is to pass through high pressure gas
Body is applied on the piston of impactor, and piston driving drill hammer hits fractured rock.Wherein power head mentions in drilling process
Flywheel moment is supplied, while high pressure gas is transferred in drilling rod and impactor by power head.Because high pressure gas will be by dynamic
The centre of power head passes through, therefore dynamic head main spindle and pressurized gas interface position will carry out seal operation, while do on main shaft
Sufficiently large through-hole guarantees that the smooth of high pressure gas passes through out.
Above-mentioned down-the-hole drill has the following deficiencies: in
1. larger with the gas circuit sealing part abrasion at pressurized gas interface in power head, maintenance replacement cost is higher；
2. the setting of venthole affects the intensity and rigidity of main shaft in dynamic head main spindle.
Therefore how to solve the above problem present in down-the-hole drill becomes that those skilled in the art are to be solved to be asked
Topic.
Utility model content
The purpose of the utility model is to provide a kind of practical down-the-hole drill swivel joints.The utility model it is another
Purpose is to provide a kind of down-the-hole drill including above-mentioned swivel joint.
To achieve the above object, the utility model provides a kind of down-the-hole drill swivel joint, comprising:
Main shaft is set between the drilling rod of down-the-hole drill and power head, and axis is equipped in the one end being connected with the drilling rod
To through-hole, it is used for the Drill-pipe conveyed high pressure gas；It, which is radially additionally provided with, is connected and through institute with the axially extending bore
State the first air inlet of main shaft entered for external high pressure gas；When working condition, the main shaft is returned with the drilling rod
Turn；
Outer tube is socketed on the outside of the main shaft, is provided with bearing on the inside of both ends；It is also set up on the outer tube
Have the second air inlet, be used to external high pressure gas being sent into first air inlet, the outer tube radially inside on
It is additionally provided with the ring-shaped ventilation slot communicated with first air inlet and second air inlet.
Preferably, several lip rings are provided on the medial surface that the outer tube connects with the main shaft.
Preferably, it is respectively arranged with the drive end bearing bracket and rear end cap for being secured to connect on the outside of the both ends of the outer tube, used
In position of the fixation outer tube on the main shaft.
Preferably, ring packing is provided on the medial surface that the drive end bearing bracket and the rear end cap connect with the main shaft
Part.
Preferably, bolt connects between the drive end bearing bracket and the rear end cap and the outer tube.
Preferably, the main shaft both ends be separately provided for the box thread being connected with the drilling rod and with the power
The male thread that head is connected.
Preferably, second air inlet is connected by pipe joint with external high pressure gas.
The utility model additionally provides a kind of down-the-hole drill, including any of the above-described down-the-hole drill swivel joint.
Down-the-hole drill swivel joint provided by the utility model, including main shaft and the outer tube that is socketed on the outside of it, two
Bearing is provided between person.The main shaft is set between the drilling rod of down-the-hole drill and power head, is connected with the drilling rod
It is equipped with axially extending bore in one end, can radially be additionally provided with and be connected with the axially extending bore to the Drill-pipe conveyed high pressure gas
The first air inlet that is logical and running through the main shaft, for being connected with external high pressure gas.Is additionally provided on the outer tube
Two air inlets are used to external high pressure gas being sent into first air inlet, the outer tube radially inside on also set
There is the ring-shaped ventilation slot communicated with first air inlet and second air inlet.When working condition, the main shaft is with institute
It states drilling rod to turn round together, the outer tube remains stationary, and external high pressure gas is entered by the second air inlet, then passes through annular
Air channel enters the first air inlet, thus enters in the axially extending bore of main shaft, circulates along axially extending bore to drilling rod direction.
Compared with prior art, above-mentioned down-the-hole drill swivel joint can make external high pressure gas directly defeated by swivel joint
It is sent into drilling rod, thus avoids high pressure gas passing through inside power head, avoids making the intensity of dynamic head main spindle with rigidity
At influence, while corresponding gas circuit sealing element maintenance cost is reduced, it is more convenient and practical.
A kind of down-the-hole drill including above-mentioned swivel joint provided by the utility model have the advantages that it is corresponding, it is no longer superfluous
It states.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is that the broken section stereochemical structure of down-the-hole drill swivel joint in a kind of specific embodiment of the utility model is shown
It is intended to.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model core is to provide a kind of down-the-hole drill swivel joint.Another core of the utility model is to provide one
Kind includes the down-the-hole drill of above-mentioned swivel joint.
Referring to FIG. 1, Fig. 1 is the partial cutaway of down-the-hole drill swivel joint in a kind of specific embodiment of the utility model
Depending on schematic perspective view.
In a specific embodiment, down-the-hole drill swivel joint provided by the utility model, including main shaft 01, set
It is placed between the drilling rod of down-the-hole drill and power head, is fixedly connected with the two, power head can drive main shaft 01 and drilling rod to return together
Turn.Main shaft 01 is usually to be threadedly coupled, for example be respectively arranged to and bore at 01 both ends of main shaft with connection type between the two
The box thread that bar is connected and the male thread being connected with power head, correspondingly, palpus setting matches on drilling rod and power head
Male thread and box thread are both certainly male thread or are that box thread can also be with, and when practical operation can be according to drilling rod, main shaft
01 and the radius size of power head three be arranged.
Axially extending bore 011, the through-hole in the axially extending bore 011 and drilling rod are equipped in the one end being connected on main shaft 01 with drilling rod
It is connection, for the conveying high-pressure gas into drilling rod, while the one end being connected on main shaft 01 with power head is not provided with through-hole, keeps away
Exempt from high pressure gas to enter in power head.Main shaft 01 is radially additionally provided with the first air inlet entered for external high pressure gas
012, it is connected with axially extending bore 011 and through main shaft 01.Axially extending bore 011 and the first air inlet 012 usually may be configured as
The cylindrical hole to cross one another is square crossing both in present embodiment.
Down-the-hole drill swivel joint further includes outer tube 02 in present embodiment, is socketed on 01 outside of main shaft,
Bearing 021 is provided on the inside of its both ends, which is used to form outer tube 02 and supports and guarantee outside under working condition
Casing 02 is not turned round with main shaft 01.Specifically, the boss towards outside can be set in the both ends inner surface of outer tube 02, it will
Bearing 021 is set on above-mentioned boss, can be further in order to avoid outer tube 02 is subjected to displacement in the turning course of main shaft 01
The outer diameter of main shaft 01 is dimensioned to difference, for example the outer diameter of abutted surface of main shaft 01 and outer tube 02 is greater than and bearing 021
Thus the outer diameter of abutted surface can get off the position between main shaft 01 and outer tube 02 is relatively fixed.
The second air inlet 022 is additionally provided on the outer tube 02 of above-mentioned swivel joint, which is usually to set
The through-hole for setting certain on 02 outer wall of outer tube is used to external high pressure gas being sent into the first air inlet 012, can usually incite somebody to action
The two is arranged on the position corresponding with outer tube 02 of main shaft 01, but in order to avoid the connection quilt both in 01 turning course of main shaft
It blocks, therefore must be further in the radially inside upper ring-shaped ventilation slot 023 for being arranged and both communicating of the outer tube 02.Tool
Body, which can be set on the axial position identical with the second air inlet 022 of 02 inside of outer tube.When
When first air inlet 012 is not overlapped with 022 position of the second air inlet, high pressure gas can circulate one section in ring-shaped ventilation slot 023
Distance after enter back into the first air inlet 012, when the two position be overlapped when, high pressure gas can directly through ring-shaped ventilation slot 023 into
Enter the first air inlet 012.It is thus achieved that any time that main shaft 01 turns round, external high pressure gas can pass through the second air inlet
022, ring-shaped ventilation slot 023 enters the first air inlet 012, thus enters main shaft 01, leads to the drilling rod and impactor of down-the-hole drill.
The use of above-mentioned down-the-hole drill swivel joint avoids high pressure gas passing through inside power head, avoids to dynamic
The intensity of power head main shaft is impacted with rigidity, while reducing corresponding gas circuit sealing element maintenance cost.
In a specific embodiment, on the basis of above-mentioned down-the-hole drill swivel joint, further in outer tube 02
It is provided with several lip rings on the medial surface to connect with main shaft 01, can avoid high pressure gas from gap between the two
Leakage.Specifically, groove can be set on the medial surface of outer tube 02, or groove is arranged in the synchronous lateral surface in main shaft 01,
Lip ring is set in the groove to match, lip ring can be the uncorruptible material such as rubber or silica gel.
As needed, it is more preferable that multiple lip ring sealing effects are set.
It in a specific embodiment, is the state of outer tube 02 in the case of guarantee 01 revolution at a high speed of main shaft not by shadow
It ringing, further, drive end bearing bracket 024 and rear end cap 025 is set on the outside of the both ends of outer tube 02, the two structure and effect are consistent,
It is provided to relative position of the fixed jacket pipe 02 on main shaft 01, being symmetrical arranged is in order to which fixed effect is more preferable.Specifically, two
Person can connect with 02 bolt of outer tube, convenient for the disassembly and maintenance of long-time service, further, the contact of the two and outer tube 02
Settable boss on face, so that the two is more preferable to the fixed effect of outer tube 02.
As an improvement can also continue to set on the medial surface that drive end bearing bracket 024 and rear end cap 025 connect with main shaft 01
Lip ring is set, the sealing effect of the swivel joint is further increased.
When in use, the second air inlet 022 can be connected by pipe joint with external high pressure gas above-mentioned swivel joint,
The applicability of such second air inlet 022 is stronger, and setting is more convenient.
In a specific embodiment, down-the-hole drill provided by the utility model includes that any of the above-described kind of down-the-hole drill returns
Adapter, it is easy to use, there is same technical effect.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Down-the-hole drill swivel joint provided by the utility model and down-the-hole drill are described in detail above.This
It applies specific case in text to be expounded the principles of the present invention and embodiment, the explanation of above embodiments is
It is used to help understand the method and its core concept of the utility model.It should be pointed out that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, this
A little improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (8)
1. a kind of down-the-hole drill swivel joint characterized by comprising
Main shaft (01), is set between the drilling rod of down-the-hole drill and power head, and axis is equipped in the one end being connected with the drilling rod
To through-hole (011), it is used for the Drill-pipe conveyed high pressure gas；It, which is radially additionally provided with, is connected and passes through with the axially extending bore
Wear the first air inlet (012) of the main shaft entered for external high pressure gas；When working condition, the main shaft (01) is with institute
Drilling rod is stated to turn round together；
Outer tube (02) is socketed on the outside of the main shaft (01), is provided with bearing (021) on the inside of both ends；The housing
It is additionally provided with the second air inlet (022) on pipe (02), is used to external high pressure gas being sent into first air inlet (012),
The outer tube (02) radially inside on be additionally provided with and first air inlet (012) and second air inlet (022)
The ring-shaped ventilation slot (023) communicated.
2. down-the-hole drill swivel joint as described in claim 1, which is characterized in that
Several lip rings are provided on the medial surface that the outer tube (02) connects with the main shaft (01).
3. down-the-hole drill swivel joint as claimed in claim 2, which is characterized in that
It is respectively arranged with the drive end bearing bracket (024) and rear end cap (025) for being secured to connect on the outside of the both ends of the outer tube (02),
For fixing position of the outer tube (02) on the main shaft (01).
4. down-the-hole drill swivel joint as claimed in claim 3, which is characterized in that
Annular is provided on the medial surface that the drive end bearing bracket (024) and the rear end cap (025) connect with the main shaft (01)
Sealing element.
5. down-the-hole drill swivel joint as claimed in claim 4, which is characterized in that
Bolt connects between the drive end bearing bracket (024) and the rear end cap (025) and the outer tube (02).
6. down-the-hole drill swivel joint as claimed in claim 5, which is characterized in that
Main shaft (01) both ends are separately provided for the box thread being connected with the drilling rod and are connected with the power head
The male thread connect.
7. down-the-hole drill swivel joint as claimed in claim 6, which is characterized in that
Second air inlet (022) is connected by pipe joint with external high pressure gas.
8. a kind of down-the-hole drill, which is characterized in that including down-the-hole drill swivel joint as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821554492.9U CN208686324U (en) | 2018-09-21 | 2018-09-21 | A kind of down-the-hole drill and its swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821554492.9U CN208686324U (en) | 2018-09-21 | 2018-09-21 | A kind of down-the-hole drill and its swivel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686324U true CN208686324U (en) | 2019-04-02 |
Family
ID=65889372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821554492.9U Active CN208686324U (en) | 2018-09-21 | 2018-09-21 | A kind of down-the-hole drill and its swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208686324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020233473A1 (en) * | 2019-05-23 | 2020-11-26 | 中国石油集团东方地球物理勘探有限责任公司 | Simple and lightweight drilling rig and matching drill pipe for use with same |
-
2018
- 2018-09-21 CN CN201821554492.9U patent/CN208686324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020233473A1 (en) * | 2019-05-23 | 2020-11-26 | 中国石油集团东方地球物理勘探有限责任公司 | Simple and lightweight drilling rig and matching drill pipe for use with same |
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