CN206917603U - The high blast down-hole hammer of major diameter - Google Patents
The high blast down-hole hammer of major diameter Download PDFInfo
- Publication number
- CN206917603U CN206917603U CN201720832930.2U CN201720832930U CN206917603U CN 206917603 U CN206917603 U CN 206917603U CN 201720832930 U CN201720832930 U CN 201720832930U CN 206917603 U CN206917603 U CN 206917603U
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- CN
- China
- Prior art keywords
- bit
- hole hammer
- balance
- balance bit
- boss
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of high blast down-hole hammer of major diameter, include the down-hole hammer body of center bit, off-balance bit and cylinder；The center bit is coaxially disposed with down-hole hammer body and center bit is fixed on down-hole hammer body lower end by multiple connecting poles of the diameter parallel with down-hole hammer body, each connecting pole is evenly distributed around down-hole hammer body axis, and an off-balance bit is rotatably set with each connecting pole；Axially extending boss is provided with the middle part of the center bit rear end；The boss is provided with the positioning component for being used at least being positioned after off-balance bit expansion to off-balance bit；Off-balance bit deploys under the influence of centrifugal force, can be positioned after expansion by positioning component, off-balance bit is fixed relative to center bit and down-hole hammer body, off-balance bit is avoided to swing, the stability of down-hole hammer is improved, is increased the service life, improves pile foundation engineering quality.
Description
Technical field
It the utility model is related to pile foundation engineering field, and in particular to a kind of high blast down-hole hammer of major diameter.
Background technology
The construction of bored concrete pile is divided into pore-forming and pile two parts, and wherein pore-forming is -individual link in filling pile construction.
In the construction of bored concrete pile, the quality of hole quality directly influences the pile quality after concrete cast：The aperture of stake holes is inclined
The small side friction for then causing pile, pile top end bearing capacity are reduced, and the bearing capacity of whole stake reduces；Stake holes top will be expanding to cause
The collateral resistance increase of pile top, and bottom collateral resistance can not play completely, while the concrete of single pile pours fluence increase；Stake holes is inclined
Tiltedly changing stake to a certain extent vertically carries mechanical characteristic, weakens effective performance of pile bearing capacity；Pile bottom sediment mistake
Thickness causes the long reduction of stake, and ability is held at the end that pile top is then directly affected for end-bearing pile, and down-hole hammer of the prior art is generally provided with
Center bit and off-balance bit, center bit are used for punching of advancing, and off-balance bit is eccentric to the reaming after center bit punches
Drill bit is usually to deploy in the presence of centrifugal force caused by rotation and cut the rock stratum of surrounding, can not effectively be determined after expansion
Position, therefore off-balance bit is easily swung in reaming procedure, influences the stability of whole down-hole hammer.
Utility model content
Therefore, the purpose of this utility model is to provide a kind of high blast down-hole hammer of major diameter, including center bit, eccentric bit
The down-hole hammer body of head and cylinder, off-balance bit deploy, can carried out after expansion by positioning component under the influence of centrifugal force
Positioning, makes off-balance bit be fixed relative to center bit and down-hole hammer body, avoids off-balance bit from swinging, improve the steady of down-hole hammer
It is qualitative, increase the service life, improve pile foundation engineering quality.
The high blast down-hole hammer of major diameter of the present utility model, include the down-hole hammer of center bit, off-balance bit and cylinder
Body；The center bit is coaxially disposed with down-hole hammer body and center bit passes through the diameter parallel with down-hole hammer body
Multiple connecting poles are fixed on down-hole hammer body lower end, and each connecting pole is evenly distributed around down-hole hammer body axis, on each connecting pole
Rotatably it is set with an off-balance bit；Axially extending boss is provided with the middle part of the center bit rear end；It is described convex
Platform is provided with the positioning component for being used at least being positioned after off-balance bit expansion to off-balance bit；By to off-balance bit
Positioning, enables off-balance bit to keep original expanded angle when cutting different rock-layers, so as to avoid off-balance bit from being hindered because of cutting
The change of power and swing.
Further, each off-balance bit is corresponded on the boss one group of positioning component is set, make each off-balance bit independent
Carry out position, prevent from interfering between each off-balance bit.
Further, the positioning component includes alignment pin and back-moving spring；Radially slide company of the alignment pin along boss
It is connected to boss；The back-moving spring, which is connected between alignment pin and boss, to be used to provide the bullet towards boss axis for alignment pin
Power, positioning component trigger under centrifugal action caused by rotation, when the size of centrifugal force reaches to a certain degree, off-balance bit
Expansion, while alignment pin overcomes the elastic force of back-moving spring to be moved radially outward, alignment pin touches off-balance bit after stretching out boss,
The positioning to off-balance bit is realized, as long as now down-hole hammer keeps rotating speed constant, off-balance bit can be carried out by alignment pin
Stable positioning.
Further, alignment pin is corresponded on the off-balance bit and is provided with locating groove, the position of locating groove is inclined as needed
The angle of heart drill bit expansion is configured, and after off-balance bit is expanded to required angle, locating groove is relative with alignment pin, and then
Inserted by alignment pin and positioning is realized in locating groove.
Further, torsion spring is equipped between each connecting pole and corresponding off-balance bit, makes off-balance bit in the bullet of torsion spring
Collapsed under power effect to boss, below certain rotating speed, off-balance bit can keep rounding state under elastic force effect, be turned by increasing
Speed deploys off-balance bit, easy to control.
Further, the connecting pole and off-balance bit are respectively four, compact-sized, reasonable.
Further, the horizontal stroke for carrying out axially position to connecting pole is equipped with center bit and the down-hole hammer body
Pin, ensure the steadiness connected between center bit and down-hole hammer body, more robust, service life is more long.
The beneficial effects of the utility model are：The high blast down-hole hammer of major diameter of the present utility model, including center bit, partially
The down-hole hammer body of heart drill bit and cylinder, off-balance bit deploy under the influence of centrifugal force, can pass through positioning component after expansion
Positioned, off-balance bit is fixed relative to center bit and down-hole hammer body, avoid off-balance bit from swinging, improve down-hole hammer
Stability, realize major diameter drilling construction, increase the service life, improve pile foundation engineering quality.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art.In accompanying drawing, each element or part
It might not be drawn according to the ratio of reality.
Fig. 1 is structural representation of the present utility model；
Fig. 2 is off-balance bit rounding state structural representation；
Fig. 3 is off-balance bit deployed condition structural representation.
Embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only
For clearly illustrating the technical solution of the utility model, therefore example is only used as, and this practicality can not be limited with this
New protection domain.
As shown in Figure 1, 2, 3, the high blast down-hole hammer of the major diameter of the present embodiment, including center bit 1, the and of off-balance bit 2
The down-hole hammer body 3 of cylinder；The center bit 1 and down-hole hammer body 3 be coaxially disposed and center bit 1 by with down-the-hole
The multiple connecting poles 4 for hammering the diameter parallel of body 3 into shape are fixed on the lower end of down-hole hammer body 3, and each connecting pole 4 is around the axle of down-hole hammer body 3
Line is evenly distributed, and an off-balance bit 2 is rotatably set with each connecting pole 4；In the middle part of the rear end of center bit 1
Provided with axially extending boss 5；The boss 5, which is provided with, to be used at least determine off-balance bit 2 after the expansion of off-balance bit 2
The positioning component of position；By the positioning to off-balance bit 2, off-balance bit 2 is set to keep original exhibition when cutting different rock-layers
Angle of release degree, so as to avoid off-balance bit 2 from being swung because of the change of Cutting Drag；The connecting pole 4 and off-balance bit 2 are respectively four
It is individual, it is compact-sized, reasonable, it is equipped with the center bit 1 and down-hole hammer body 3 for carrying out axially position to connecting pole 4
Lateral pin 9, ensure the steadiness connected between center bit 1 and down-hole hammer body 3, more robust, service life is more long.
In the present embodiment, each off-balance bit 2 is corresponded on the boss 5 one group of positioning component is set, make each eccentric bit
First 2 it is independent position, prevent from interfering between each off-balance bit 2；The positioning component includes alignment pin 6 and resets bullet
Spring 7；The alignment pin 6 is connected to boss 5 along radially sliding for boss 5；The back-moving spring 7 is connected to alignment pin 6 and boss 5
Between be used to provide elastic force towards the axis of boss 5 for alignment pin 6, positioning component touches under centrifugal action caused by rotation
Hair, when the size of centrifugal force reaches to a certain degree, off-balance bit 2 deploys, while alignment pin 6 overcomes the elastic force of back-moving spring 7
It is moved radially outward, alignment pin 6 touches off-balance bit 2 after stretching out boss 5, the positioning to off-balance bit 2 is realized, as long as now
Down-hole hammer keeps rotating speed constant, the positioning that can be stablized by alignment pin 6 to off-balance bit 2；It is right on the off-balance bit 2
Alignment pin 6 is answered to be provided with locating groove, the angle that the position off-balance bit 2 as needed of locating groove deploys is configured, and is made partially
After heart drill bit 2 is expanded to required angle, locating groove is relative with alignment pin 6, and then is inserted by alignment pin 6 in locating groove in fact
Now position.
In the present embodiment, torsion spring 8 is equipped between each connecting pole 4 and corresponding off-balance bit 2, off-balance bit 2 is existed
Collapsed under the elastic force effect of torsion spring 8 to boss 5, below certain rotating speed, off-balance bit 2 can keep collapsing shape under elastic force effect
State, deploy off-balance bit 2 by increasing rotating speed, it is easy to control.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type, it all should cover among claim of the present utility model and the scope of specification.
Claims (7)
- A kind of 1. high blast down-hole hammer of major diameter, it is characterised in that：Include the down-hole hammer of center bit, off-balance bit and cylinder Body；The center bit is coaxially disposed with down-hole hammer body and center bit passes through the diameter parallel with down-hole hammer body Multiple connecting poles are fixed on down-hole hammer body lower end, and each connecting pole is evenly distributed around down-hole hammer body axis, on each connecting pole Rotatably it is set with an off-balance bit；Axially extending boss is provided with the middle part of the center bit rear end；It is described convex Platform is provided with the positioning component for being used at least being positioned after off-balance bit expansion to off-balance bit.
- 2. the high blast down-hole hammer of major diameter according to claim 1, it is characterised in that：It is corresponding each eccentric on the boss Drill bit sets one group of positioning component, each off-balance bit independence position.
- 3. the high blast down-hole hammer of major diameter according to claim 2, it is characterised in that：The positioning component includes alignment pin And back-moving spring；The alignment pin is connected to boss along radially sliding for boss；The back-moving spring is connected to alignment pin and convex It is used to provide the elastic force towards boss axis for alignment pin between platform.
- 4. the high blast down-hole hammer of major diameter according to claim 3, it is characterised in that：Corresponding positioning on the off-balance bit Pin is provided with locating groove.
- 5. the high blast down-hole hammer of major diameter according to claim 4, it is characterised in that：Each connecting pole and corresponding bias Torsion spring is equipped between drill bit, off-balance bit is collapsed under the elastic force effect of torsion spring to boss.
- 6. the high blast down-hole hammer of major diameter according to claim 5, it is characterised in that：The connecting pole and off-balance bit point Wei not be four.
- 7. the high blast down-hole hammer of major diameter according to claim 1, it is characterised in that：Center bit and the down-hole hammer sheet The lateral pin for carrying out axially position to connecting pole is equipped with body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832930.2U CN206917603U (en) | 2017-07-10 | 2017-07-10 | The high blast down-hole hammer of major diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720832930.2U CN206917603U (en) | 2017-07-10 | 2017-07-10 | The high blast down-hole hammer of major diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206917603U true CN206917603U (en) | 2018-01-23 |
Family
ID=61336499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720832930.2U Expired - Fee Related CN206917603U (en) | 2017-07-10 | 2017-07-10 | The high blast down-hole hammer of major diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206917603U (en) |
-
2017
- 2017-07-10 CN CN201720832930.2U patent/CN206917603U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 Termination date: 20200710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |