CN203701978U - Diameter-variable underreaming drill and drilling machine - Google Patents
Diameter-variable underreaming drill and drilling machine Download PDFInfo
- Publication number
- CN203701978U CN203701978U CN201320877189.3U CN201320877189U CN203701978U CN 203701978 U CN203701978 U CN 203701978U CN 201320877189 U CN201320877189 U CN 201320877189U CN 203701978 U CN203701978 U CN 203701978U
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- Prior art keywords
- bit body
- piston
- expanding drill
- drill
- bottom expanding
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Abstract
The utility model discloses a diameter-variable underreaming drill and a drilling machine. The diameter-variable underreaming drill comprises a cylindrical drill body and drill bits at the lower end of the drill body, the drill body is provided with at least one swinging expanding wing, the inside of the drill body is provided with a piston which can move vertically along the inner wall of the drill body, and the piston divides the inside of the drill body into an upper cavity and a lower cavity; the lower cavity is provided with a reset unit for driving the piston to move upwards for resetting, and the reset unit is connected with the lower end of the piston and the lower end of the drill body. According to the diameter-variable underreaming drill, the drill body serves as the cylinder barrel of an oil cylinder and is provided with the internal piston to drive the expanding wing to expand and further to achieve expanded drilling, so that an independent expanding wing driving oil cylinder can be structurally omitted; meanwhile, the drill body is only provided with one oil port to improve the layout of pipelines, thereby being simpler in structure, facilitating manufacturing and machining and reducing the cost.
Description
Technical field
The utility model relates to engineering machinery field, particularly a kind of reducing bottom expanding drill and be provided with the drilling machine of this reducing bottom expanding drill.
Background technology
At present, in most of capital workss, the construction of pile foundation is a very important link.Castinplace pile and preformed pile are the pile foundation construction methods of generally applying in engineering.Under some geological conditions, according to designing requirement, need stake to there is high bearing capacity, in order to promote the bearing capacity of whole pile, conventionally make an enlarged footing at pile crown or middle part, this requires, in the time of boring, to expand boring aperture in precalculated position.
Existingly can realize the drill bit that reaming creeps into and all in existing drilling pipe, set up expansion wing structure, and in cylinder bores, arrange to drive and expand the driving oil cylinder opened of chord, in the time of normal boring, expanding the wing is contracted on cylinder brill outer wall, need to expand aperture boring time, by to driving oil cylinder fuel feeding, drive expansion chord to open, utilize the expansion wing to carry out reaming and creep into.
Although this existing structure can realize reaming, structurally there are some problems in it.Existing drill bit is directly driving oil cylinder to be arranged on to drill bit internal, and this requires drill bit internal space to want sufficient, and therefore, this structure is only applicable to large diameter drill bit; For the slightly little drill bit of diameter, driving oil cylinder is directly set therein, and can realize the effect that expands the wing that drives, this makes to drive the installation of oil cylinder more difficult, meanwhile, in limited inner space, drive the pipeline of oil cylinder to be also difficult to arrange, and make the structure of drill bit internal and production technology more complicated, improved cost of production.
Therefore, need badly a kind of new drill bit is provided, when it can be realized reaming and creeps into, can also address the above problem.
Utility model content
In view of this, the utility model proposes a kind of reducing bottom expanding drill and the drilling machine that is provided with this reducing bottom expanding drill, this reducing bottom expanding drill can be realized reaming and creep into, and simple and reliable for structure, not fragile, is convenient to produce.
On the one hand, the utility model provides a kind of reducing bottom expanding drill, comprise tubular bit body, be arranged on the brill tooth of described bit body lower end, on described bit body, be provided with at least one swingable expansion wing, in described bit body, being provided with the piston that can move up and down along its inwall, is epicoele and cavity of resorption by the interior separation of described bit body; Described piston is connected with the described expansion wing, drives described expansion chord to open and regain;
Described bit body upper end offers oil-in, and described oil-in is communicated with described epicoele;
In described cavity of resorption, be provided with make described piston move up reset resetting means, described resetting means is connected with the lower end of described piston and the lower end of described bit body.
Further, on described piston, offer groove, the scope that described bit body moves up and down at the described groove of correspondence offers opening;
On described bit body, corresponding described opening part is provided with rotary shaft rack, on described rotary shaft rack, is provided with rotating shaft; The described expansion wing is arranged on described rotary shaft rack swingably by described rotating shaft;
One end of the described expansion wing is arranged in described groove through described opening, and the other end of the described expansion wing is protruding.
Further, in the epicoele of described bit body, be provided with piston upper limit position block; And/or,
Described bit body cavity of resorption bottom is provided with piston lower position block.
Further, described upper limit position block is the annular slab being arranged on described bit body inwall.
Further, the lower end of described resetting means is connected to described piston lower position block.
Further, described piston lower position block is and the cylinder of the coaxial setting of described bit body that the bottom of described cylinder is connected with the inwall of described bit body bottom;
Described resetting means is spring, and described spring housing is located on described cylinder, and the lower end of described spring is connected to the bottom of described cylinder.
Further, the top of described epicoele is provided with upper sealing panel, and described oil-in is opened on described upper sealing panel, in described oil-in, is equipped with oil inlet pipe.
Further, described reducing bottom expanding drill also comprises the termination that is arranged on described bit body lower end, and described brill tooth is arranged on the below of described termination;
And, to run through described bit body and be arranged on the Grouting Pipe in described bit body, the lower end of described Grouting Pipe is positioned at described termination.
Further, be provided with two described expansion wings on described bit body, the periphery of the relatively described bit body of the described expansion wing is evenly arranged.
On the other hand, the utility model also provides a kind of drilling machine, and it is provided with the reducing bottom expanding drill described in as above any one.
The reducing that the utility model provides expands subdrilling bit body is redesigned, and its inwall is processed, and sets it as cylinder tube, and movably piston is set therein, has piston driving to expand the wing and swings folding, realizes reaming and creeps into; And a hydraulic fluid port is set only to this bit body, hydraulic fluid port is communicated with epicoele, to epicoele fuel feeding, piston is moved down by hydraulic fluid port, drives to expand the wing and opens, and then by the resetting means of cavity of resorption, makes to move on piston reset.Compared with existing diameter-enlarging drill bit, reducing expanding drill head tool of the present utility model has the following advantages:
1, directly using bit body as cylinder barrel, and the driven plunger that expands the wing is set therein, without providing independent driving oil cylinder for expanding the wing, simplified structure, reduces costs; And this structure is more suitable for the drill bit of minor diameter;
2, a hydraulic fluid port being set in the upper end of bit body, is only epicoele fuel feeding, for piston provides power, drives the expansion wing to open; At bit body cavity of resorption, resetting means is set, utilizes the active force of resetting means to drive the expansion wing to regain; Thus, simplify fluid pipeline, make the layout of pipeline easier.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
The structural representation of a kind of reducing bottom expanding drill that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the sectional drawing of reducing bottom expanding drill shown in Fig. 1;
Fig. 3 is the structural representation of reducing bottom expanding drill shown in Fig. 1 in the time that the expansion wing is packed up;
Fig. 4 is the structural representation of the reducing bottom expanding drill shown in Fig. 1 in the time that the expansion wing is opened.
Description of reference numerals
10-bit body; 11-upper sealing panel; 12-sealing ring; 13-oil inlet pipe; 14-termination; 20-bores tooth; 30-expands the wing; 31-rotary shaft rack; 32-rotating shaft; 40-piston; 41-groove; 42-resetting means; 43-piston upper limit position block; 44-piston lower position block; 50-Grouting Pipe; 60-helical blade; 70-connects square toes.
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:
The structural representation of a kind of reducing bottom expanding drill that Fig. 1 provides for the utility model embodiment; Fig. 2 is the sectional drawing of reducing bottom expanding drill shown in Fig. 1; Fig. 3 is the structural representation of reducing bottom expanding drill shown in Fig. 1 in the time that the expansion wing is packed up; Fig. 4 is the structural representation of the reducing bottom expanding drill shown in Fig. 1 in the time that the expansion wing is opened.
Shown in Fig. 1 and Fig. 2, the reducing bottom expanding drill that the utility model embodiment provides comprises tubular bit body 10, be arranged on the brill tooth 20 of these bit body 10 lower ends, on bit body 10, being also provided with two swingable 30, two expansion wings 30 of the expansion wings is arranged in the periphery of bit body 10 equably.
In bit body 10, being provided with the piston 40 that can move up and down along its inwall, is epicoele and cavity of resorption by the interior separation of bit body 10.Piston 40 is connected with the expansion wing 30, drives the expansion wing 30 to swing up and down, and realizes and opens and regain.
The upper end of bit body 10 offers oil-in, and oil-in is communicated with epicoele; In the cavity of resorption of bit body 10, be provided with make piston 40 move up reset resetting means 42, resetting means 42 is connected with the lower end of piston 40 and the lower end of bit body 10.
Reducing in this embodiment expands subdrilling bit body 10 is redesigned, and its inwall is processed, and sets it as cylinder tube, and movably piston 40 is set therein, has piston 40 to drive the expansion wing 30 to swing folding; And a hydraulic fluid port is set only to this bit body 10, hydraulic fluid port is communicated with epicoele, to epicoele fuel feeding, piston 40 is moved down by hydraulic fluid port, drives the expansion wing 30 to open, and then, by the resetting means 42 of cavity of resorption, makes to move reset on piston 40.Therefore, this reducing of the present utility model expand subdrilling using bit body as cylinder tube, and piston is set therein, and drive expansion chord to open, realize reaming and creep into, this structure is without arranging that independently expands a wing driving oil cylinder, and bit body only adopts a hydraulic fluid port, improve the layout of pipeline, the structure that this reducing expands subdrilling is simpler, be convenient to production and processing, reduced cost.
Particularly, as shown in Figure 2, offer groove 41 on piston 40, the scope that bit body 10 moves up and down in respective slot 41 offers opening; On bit body 10 outer walls, corresponding opening part is provided with rotary shaft rack 31, is provided with rotating shaft 32 on rotary shaft rack 31; Expanding the wing 30 preferred disposition is the bending plate of a similar L-type, and it is articulated in rotating shaft 32 at bending part, makes to expand the wing 30 and is arranged on swingably on rotary shaft rack 31 by rotating shaft 30, expands the wing 30 and is arranged on swingably on bit body 10; The one end that expands the wing 30 is arranged in groove 41 through opening, and the other end is protruding, extends to the direction away from opening.Like this, when piston 40 moves up and down, the one end in the groove that is contained in piston 40 41 of the expansion wing 30 is along with piston 40 synchronizing movings, and by means of rotating shaft 32, the other end that expands the wing 30 can swing, and realizes by piston 40 and drives and expand opening and regaining of the wing 30.
The top of bit body 10 is provided with upper sealing panel 11, between the top of piston 40 and the inwall of bit body 10, is also provided with sealing ring 12, and the epicoele of bit body 10 is sealed to a confined space, prevents oil liquid leakage.Aforesaid oil-in is opened on upper sealing panel 11, for the ease of to epicoele fuel feeding, is equipped with oil inlet pipe 13 in oil-in, and oil inlet pipe 13 is communicated with epicoele and bit body 10 outsides, is connected with hydraulic circuit.But, in this embodiment, with the name of oil-in and oil inlet pipe, it will be appreciated by those skilled in the art that at piston the fluid in epicoele can pass through this oil inlet pipe (or oil-in) draining upwards when reset movement.
In the epicoele of bit body 10, be provided with piston upper limit position block 43, the extreme position moving up for limited piston 30, as preferably, as shown in Figure 2, this piston upper limit position block 43 can be configured to be arranged on the annular slab on bit body 10 inwalls, fluid can, by the hole in the middle of annular slab, act on piston 40.
In the cavity of resorption of bit body 10, be provided with piston lower position block 44, the extreme position moving down for limited piston, in addition, the lower end of the resetting means 42 in cavity of resorption is also connected to this piston lower position block 44; As shown in Figure 2, piston lower position block 44 is preferably the cylinder with the coaxial setting of bit body 10, and the base diameter of cylinder is larger than the diameter of stack shell, is connected with the inwall of bit body 10 bottoms.Resetting means 42 in cavity of resorption is preferably spring, and this spring housing is located on the stack shell of piston limit piece 44, and lower end is connected to the bottom of piston lower position block 44, and upper end connects the lower end of piston 40.
While utilizing bit bore, according to construction requirement, need in hole, inject concrete grout or mud etc., therefore, this reducing bottom expanding drill also comprises that running through bit body 10 is arranged on the Grouting Pipe 50 in bit body 10, Grouting Pipe 50 is from top to bottom successively through upper sealing panel 11, piston upper limit position block 43, piston 40, back-moving spring, piston lower position block 44, until the lower end of Grouting Pipe 50 is positioned at the termination 14 that is arranged on bit body 10 lower ends.The brill tooth 20 of reducing bottom expanding drill is arranged on the below of termination 14.
According to boring needs, the periphery of bit body 10 can also be provided with helical blade 60, is convenient to the boring work of drill bit.Bit body 10 upper ends are provided with and connect square toes 70, for the structures such as this drill bit and drilling rod are connected.In addition, although the expansion wing 30 in the present embodiment has two, in other embodiments, expand the wing and can be configured to one, three or more, be configured to when multiple, expand the wing and can evenly be arranged in the periphery of bit body.In this embodiment, the resetting means 42 arranging in cavity of resorption is configured to spring, also can adopt other forms of resetting means in other embodiment, as long as this resetting means is after piston moves down, reset can move up piston.
With reference to Fig. 3 and Fig. 4, the expansion span open procedure of this reducing bottom expanding drill is as follows:
As shown in Figure 3, when piston 40 is located thereon extreme position, expand the wing 30 straight down, near bit body 10, in retrieving position.Need to expand the wing and open time, as shown in Figure 4, by oil inlet pipe 13 to fuel feeding in epicoele, piston 40 is subject to the pressure of hydraulic oil, moves down, and the groove 41 on piston 40 and piston 40 moves down, and the one end that drives the expansion wing 30 to be contained in groove 41 moves down, utilize lever principle, hinged with rotating shaft 32 by means of expanding the wing 30, the other end that expands the wing 30 upwards swings upset; The distance moving down by control piston 40, can adjust the open angle that expands the wing 30, makes reducing bottom expanding drill have different external diameters, drill through the enlarged footing of different diameters, the wing 30 to be expanded turn to the open position of expection, fuel cut-off, piston 40 and 30 stop motions of the expansion wing.If the displacement of piston 40 is not controlled, piston 40 moves to lower end and contacts with piston lower position block 44, reaches limit inferior position, expands the wing 30 and also reaches full swing angle.Wait hole complete or upwards carry bore time, need to regain expanding the wing 30, now, be communicated with draining oil circuit by oil inlet pipe 13, piston 40 is subject to resetting means 42 reset response power upwards, and piston 40 moves up gradually, and the fluid of oppressing in epicoele releases from oil inlet pipe 13, expand the wing 30 simultaneously and regain to lower swing, until piston 40 returns back to initial position, expand the wing 30 and be also rocked to retrieving position straight down.
Compared with existing diameter-enlarging drill bit, reducing bottom expanding drill tool of the present utility model has the following advantages:
1, directly using bit body as cylinder barrel, and the driven plunger that expands the wing is set therein, without providing independent driving oil cylinder for expanding the wing, simplified structure, reduces costs; And this structure is more suitable for the drill bit of minor diameter;
2, a hydraulic fluid port being set in the upper end of bit body, is only epicoele fuel feeding, for piston provides power, drives the expansion wing to open; At bit body cavity of resorption, resetting means is set, utilizes the active force of resetting means to drive the expansion wing to regain; Thus, simplify fluid pipeline, make the layout of pipeline easier.
Embodiment of the present utility model also provides a kind of drilling machine, and it is provided with above-mentioned reducing bottom expanding drill.This drilling machine uses the boring of this reducing bottom expanding drill, therefore has a little as abovely, repeats no more.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a reducing bottom expanding drill, comprises tubular bit body (10), is arranged on the brill tooth (20) of described bit body (10) lower end, is provided with at least one swingable expansion wing (30) on described bit body (10), it is characterized in that,
In described bit body (10), being provided with the piston (40) that can move up and down along its inwall, is epicoele and cavity of resorption by the interior separation of described bit body (10); Described piston (40) is connected with the described expansion wing (30), drives the described expansion wing (30) open and regain;
Described bit body (10) upper end offers oil-in, and described oil-in is communicated with described epicoele;
In described cavity of resorption, be provided with make described piston (40) move up reset resetting means (42), described resetting means (42) is connected with the lower end of described piston (40) and the lower end of described bit body (10).
2. reducing bottom expanding drill according to claim 1, is characterized in that, offers groove (41) on described piston (40), and the scope that described bit body (10) moves up and down at the described groove of correspondence (41) offers opening;
The upper corresponding described opening part of described bit body (10) is provided with rotary shaft rack (31), is provided with rotating shaft (32) on described rotary shaft rack (31); The described expansion wing (30) is arranged on described rotary shaft rack (31) swingably by described rotating shaft (32);
One end of the described expansion wing (30) is arranged in described groove (41) through described opening, and the other end of the described expansion wing (30) is protruding.
3. reducing bottom expanding drill according to claim 2, is characterized in that, is provided with piston upper limit position block (43) in the epicoele of described bit body (10); And/or,
Described bit body (10) cavity of resorption bottom is provided with piston lower position block (44).
4. reducing bottom expanding drill according to claim 3, is characterized in that, described upper limit position block (43) is for being arranged on the annular slab on described bit body (10) inwall.
5. reducing bottom expanding drill according to claim 3, is characterized in that, the lower end of described resetting means (42) is connected to described piston lower position block (44).
6. reducing bottom expanding drill according to claim 5, is characterized in that, described piston lower position block (44) is and the cylinder of the coaxial setting of described bit body (10) that the bottom of described cylinder is connected with the inwall of described bit body (10) bottom;
Described resetting means (42) is spring, and described spring housing is located on described cylinder, and the lower end of described spring is connected to the bottom of described cylinder.
7. reducing bottom expanding drill according to claim 6, is characterized in that, the top of described epicoele is provided with upper sealing panel (11), and it is upper that described oil-in is opened in described upper sealing panel (11), is equipped with oil inlet pipe (13) in described oil-in.
8. reducing bottom expanding drill according to claim 7, is characterized in that, described reducing bottom expanding drill also comprises the termination (14) that is arranged on described bit body (10) lower end, and described brill tooth (20) is arranged on the below of described termination (14);
And, to run through described bit body (10) and be arranged on the Grouting Pipe (50) in described bit body (10), the lower end of described Grouting Pipe (50) is positioned at described termination (14).
9. according to the reducing bottom expanding drill described in any one in claim 1-8, it is characterized in that, on described bit body (10), be provided with two described expansion wings (30), the periphery of the relatively described bit body of the described expansion wing (30) (10) is evenly arranged.
10. a drilling machine, is characterized in that, is provided with the reducing bottom expanding drill as described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877189.3U CN203701978U (en) | 2013-12-26 | 2013-12-26 | Diameter-variable underreaming drill and drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320877189.3U CN203701978U (en) | 2013-12-26 | 2013-12-26 | Diameter-variable underreaming drill and drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203701978U true CN203701978U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320877189.3U Expired - Fee Related CN203701978U (en) | 2013-12-26 | 2013-12-26 | Diameter-variable underreaming drill and drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203701978U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121007A (en) * | 2014-07-15 | 2014-10-29 | 北京市三一重机有限公司 | Control system and method for drilling bucket with enlarged wing and pile machine |
| CN108104721A (en) * | 2017-12-04 | 2018-06-01 | 贵州大学 | A kind of chambering device |
| CN109667547A (en) * | 2018-12-07 | 2019-04-23 | 北京三智造科技有限公司 | Diameter changeable drill bit |
| CN110607990A (en) * | 2019-08-19 | 2019-12-24 | 广西电网有限责任公司贵港供电局 | Variable-diameter drill bit and variable-diameter drill bit device |
-
2013
- 2013-12-26 CN CN201320877189.3U patent/CN203701978U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121007A (en) * | 2014-07-15 | 2014-10-29 | 北京市三一重机有限公司 | Control system and method for drilling bucket with enlarged wing and pile machine |
| CN104121007B (en) * | 2014-07-15 | 2017-10-17 | 北京市三一重机有限公司 | A kind of band expands drilling bucket control system, method and the stake machine of the wing |
| CN108104721A (en) * | 2017-12-04 | 2018-06-01 | 贵州大学 | A kind of chambering device |
| CN109667547A (en) * | 2018-12-07 | 2019-04-23 | 北京三智造科技有限公司 | Diameter changeable drill bit |
| CN109667547B (en) * | 2018-12-07 | 2023-10-24 | 北京三一智造科技有限公司 | Variable diameter drill bit |
| CN110607990A (en) * | 2019-08-19 | 2019-12-24 | 广西电网有限责任公司贵港供电局 | Variable-diameter drill bit and variable-diameter drill bit device |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20151226 |
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| EXPY | Termination of patent right or utility model |