CN205778576U - The drill rod connecting device of down-the-hole drill - Google Patents
The drill rod connecting device of down-the-hole drill Download PDFInfo
- Publication number
- CN205778576U CN205778576U CN201620455063.0U CN201620455063U CN205778576U CN 205778576 U CN205778576 U CN 205778576U CN 201620455063 U CN201620455063 U CN 201620455063U CN 205778576 U CN205778576 U CN 205778576U
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- China
- Prior art keywords
- drilling rod
- axle sleeve
- drill
- flat key
- connecting device
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Abstract
The utility model discloses the drill rod connecting device of a kind of down-the-hole drill, impacter and the drilling rod of drill bit is connected including front end, the axle sleeve composition shaft hole mode socket connection that the tail end of drilling rod is extended with the output shaft end of rotary motor, it is characterized in that: the inserting section of drilling rod and axle sleeve is provided with constraint and implements the flat key of synchronous axial system, the inserting section of described drilling rod and axle sleeve is additionally provided with the position-limiting unit of restriction axial separation.By position-limiting unit, drilling rod and axle sleeve are carried out axial separation spacing, so may insure that the moment of torsion of output shaft with reliable delivery, and then can ensure impacter and the safe and reliable operation of drill bit of drilling rod front end.
Description
Technical field
This utility model relates to field of civil engineering, and the drilling rod being specifically related to a kind of down-the-hole drill connects
Device.
Background technology
Down-the-hole drill is a kind of mine mechanism for formation downhole boring, and it is mainly used in ground
Lower mine and the Geotechnical Engineering such as tunnel, water conservancy.During actual application, treat complete machine carry out the most fixing and
After support, rotated by hydraulic-driven rotary motor, to drive by shaft coupling and rotary motor
The drilling rod generation synchronous axial system that output shaft is connected, so that the impacter of drilling rod front end and drill bit pair
Rock implements impact grinding.Actual adding man-hour, described shaft coupling can be processed as one with drilling rod,
I.e. one end of shaft coupling uses integral type to be connected with the rear end of drilling rod, and the other end of shaft coupling is with defeated
The axis hole that the outfan of shaft is offered socket-connects and passes through flat key and implements fixing, to ensure that output shaft leads to
Cross shaft coupling and torsion is transferred to drilling rod.
But, during actual borehole, power produced by the strenuous vibration of impacter can be by boring
Bar is delivered on flat key, make flat key by the shaking force of different directions, it addition, rotary motor is defeated
When shaft drives drilling rod to rotate simultaneously, flat key can be subject to the biggest centrifugal force and torsion, therefore, flat key
Depending merely on the fastening interference fits between corresponding keyway, get off for a long time, flat key will certainly occur pine
Dynamic, thus cause occurring between strenuous vibration duty lower coupler and output shaft axial or all
To movement, and then affect the properly functioning of construction equipment.It addition, flat key once comes off, not only deposit
In potential safety hazard, and the joining of the keyway offered when flat key is again loaded into and on shaft coupling, output shaft
Conjunction grade reduces, it is difficult to meets and uses requirement, the most both wasting manpower and material resources's resource, and impact is executed again
Work efficiency rate.Thereby it is ensured that being reliably connected of the shaft coupling of the output shaft of rotary motor and drilling rod rear end,
This to down-the-hole drill normal, safe handling for particularly important.
Summary of the invention
The purpose of this utility model is to provide and a kind of uses down-the-hole drill that safety, work efficiency are high
Drill rod connecting device.
For achieving the above object, the technical solution adopted in the utility model is: a kind of down-the-hole drill
Drill rod connecting device, connects impacter and the drilling rod of drill bit, the tail end of drilling rod and revolution including front end
The axle sleeve that the output shaft end of motor is extended constitutes shaft hole mode socket connection, it is characterised in that:
The inserting section of drilling rod and axle sleeve is provided with constraint and implements the flat key of synchronous axial system, described drilling rod
With the position-limiting unit that the inserting section of axle sleeve is additionally provided with restriction axial separation.
Use having the beneficial effects that of technique scheme generation: by position-limiting unit to drilling rod and axle
To carry out axial separation spacing for set, so may insure that output shaft moment of torsion can with reliable delivery, and then
Ensure impacter and the safe and reliable operation of drill bit of drilling rod front end.
Accompanying drawing explanation
Fig. 1 is exploded perspective view of the present utility model；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the structural representation of rotary motor；
Fig. 4 is the structural representation of drilling rod tail end；
The structural representation of Fig. 5 adapter sleeve.
Detailed description of the invention
The drill rod connecting device of a kind of down-the-hole drill, as Figure 1-5, connects impact including front end
The drilling rod 10 of device and drill bit, the tail end 11 of drilling rod 10 and output shaft 21 end of rotary motor 20
Extended axle sleeve 22 constitutes shaft hole mode socket connection, drilling rod 10 and the inserting section of axle sleeve 22
Being provided with both constraints and implement the flat key 30 of synchronous axial system, described drilling rod 10 is inserted with axle sleeve 22
The section of connecing is additionally provided with the position-limiting unit of both restrictions axial separation.During practical operation, by spacing list
It is spacing that unit carries out axial separation to drilling rod 10 and axle sleeve 22, so may insure that output shaft 21
Moment of torsion is reliably delivered to drilling rod 10, and then ensures the impacter of drilling rod 10 front end and drill bit
Normal work, improves work efficiency and the working security of ground operation.
Concrete scheme is: as Figure 1-5, described axle sleeve 22 offers run through tube wall,
The keyhole 221 inserted for flat key 30, described position-limiting unit includes adapter sleeve 40, adapter sleeve 40
It is set on the axle sleeve 22 at keyhole 221 place.Owing to keyhole 221 is that through tube wall is arranged,
So the keyway on keyhole 221, flat key 30 and drilling rod 10 cooperates to drilling rod 10 and axle
Set 22 constitutes axial, circumferential spacing, and uses the layout of adapter sleeve 40, the most both can be right
Flat key 30 plays the effect that constraint is fixing, thus limits the axle of drilling rod 10 and axle sleeve 22 further
To separation, can also avoid simultaneously axle sleeve 22 during high-speed rotation flat key 30 from keyhole 221
Fly out, cause the generation of security incident.It addition, with first flat key 30 being placed on of prior art
The tail end 11 being inserted into drilling rod 10 in the axis hole of axle sleeve 22 is compared, and this utility model is first by axle sleeve
22 carry out socket connection with the tail end 11 of drilling rod 10, insert flat key 30 the most again at keyhole 221,
So that the installation of flat key 30 with dismantle also extremely convenient.
Further, described position-limiting unit also includes trip bolt 50, and trip bolt 50 is vertical
Constitute with flat key 30 through the end of adapter sleeve 40 and trip bolt 50 and threaded.With existing
Technology is offered keyway at the shaft hole inner wall of axle sleeve 22 along axial length direction and is compared, and this utility model passes through
Run through the layout of the keyhole 221 of tube wall, so make adapter sleeve 40 can directly connect with flat key 30
Touch, and implement to connect by trip bolt 50, so that adapter sleeve 40, flat key 30 and fastening
Screw 50 is mainly affected by the rotatory force of output shaft 21 on the whole, and adapter sleeve 40, flat key
Without relative motion between 30 and this three of trip bolt 50, thus substantially increase trip bolt 50
Fixed effect, the good fixing effect of flat key 30, that is ensure that ground operation safety and
Work efficiency.
Preferably, described axle sleeve 22 at least offers two keyholes 221, is perfectly even distributed
3-4, the flat key 30 that each keyhole 221 is built into respectively with trip bolt 50 structure of corresponding layout
Become threaded.Carry out bonded by multiple flat keys 30, so can improve drilling rod further
10 and the connection reliability of axle sleeve 22.
Claims (4)
1. a drill rod connecting device for down-the-hole drill, connects impacter and drill bit including front end
Drilling rod (10), the tail end (11) of drilling rod (10) and the output shaft (21) of rotary motor (20)
Axle sleeve (22) the composition shaft hole mode socket connection that end is extended, it is characterised in that: drilling rod (10)
The inserting section of axle sleeve (22) is provided with constraint and implements the flat key (30) of synchronous axial system, institute
The inserting section of the drilling rod (10) stated and axle sleeve (22) is additionally provided with the limit of restriction axial separation
Bit location.
The drill rod connecting device of down-the-hole drill the most according to claim 1, it is characterised in that:
The keyhole (221) running through tube wall, inserting for flat key (30) is offered on described axle sleeve (22),
Described position-limiting unit includes that adapter sleeve (40), adapter sleeve (40) are set in keyhole (221) institute
On the axle sleeve (22) at place.
The drill rod connecting device of down-the-hole drill the most according to claim 2, it is characterised in that:
Described position-limiting unit also includes that trip bolt (50), trip bolt (50) pass perpendicularly through fastening
The end of set (40) and trip bolt (50) is constituted with flat key (30) threadeds.
The drill rod connecting device of down-the-hole drill the most according to claim 3, it is characterised in that:
At least offering two keyholes (221) on described axle sleeve (22), each keyhole (221) is built-in
The flat key (30) entered constitutes threaded with the trip bolt (50) of corresponding layout respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620455063.0U CN205778576U (en) | 2016-05-17 | 2016-05-17 | The drill rod connecting device of down-the-hole drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620455063.0U CN205778576U (en) | 2016-05-17 | 2016-05-17 | The drill rod connecting device of down-the-hole drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778576U true CN205778576U (en) | 2016-12-07 |
Family
ID=58118971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620455063.0U Active CN205778576U (en) | 2016-05-17 | 2016-05-17 | The drill rod connecting device of down-the-hole drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205778576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605433A (en) * | 2024-01-24 | 2024-02-27 | 四川中铁二院环保科技有限公司 | Impact core drill |
-
2016
- 2016-05-17 CN CN201620455063.0U patent/CN205778576U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605433A (en) * | 2024-01-24 | 2024-02-27 | 四川中铁二院环保科技有限公司 | Impact core drill |
| CN117605433B (en) * | 2024-01-24 | 2024-04-05 | 四川中铁二院环保科技有限公司 | Impact core drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |