CN205047160U - Extend ream bit - Google Patents
Extend ream bit Download PDFInfo
- Publication number
- CN205047160U CN205047160U CN201520772260.0U CN201520772260U CN205047160U CN 205047160 U CN205047160 U CN 205047160U CN 201520772260 U CN201520772260 U CN 201520772260U CN 205047160 U CN205047160 U CN 205047160U
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- CN
- China
- Prior art keywords
- rotary
- pivoted arm
- cut
- broach shell
- rotation axle
- 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.)
- Withdrawn - After Issue
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Extend ream bit includes: lift axis of rotation, upper end are established to the power attach fitting, the rotary -cut device, including at least one rotary -cut rocking arm, the surface of rotary -cut rocking arm is provided with the rotary -cut sword, the one end of rotary -cut rocking arm articulates in the lift axis of rotation, and the axis of articulated department is perpendicular with the axis of lift axis of rotation, and is provided with drive rotary -cut rocking arm between rotary -cut rocking arm and the lift axis of rotation around the flexible drive arrangement of the axis pivoted of articulated department, the rotary -cut rocking arm is the obtuse angle around the axis pivoted maximum angle of articulated department. The increase stake end that can step forward in its hole of expanding and the area of contact of the soil body to further increase the bearing capacity of pile foundation.
Description
Technical field
The utility model relates to a kind of reaming bit for building operations building site, the reaming bit of specifically a kind of bottom reaming at original preexisting hole.
Background technology
Pile foundation engineering is one of important component part in field of civil engineering, engineering pile form conventional at present mainly contains preformed pile and the large classification of castinplace pile two, wherein preformed pile comprises the forms such as steel pipe pile, precast square pile, PHC pile tube, pre-stress hollow square pile, be characterized in by rearmounted for prefabricated for engineering pile shaping enter the soil body, utilize the acting in conjunction of oil and pile to provide resistance to compression, resistance to plucking, bending resistance or horizontal bearing capacity.Castinplace pile comprises the form such as bored pile, tube-sinking cast-in-situ pile, is characterized in first preexisting hole in Rock And Soil, then pours into material of body of a pile pile.Because of pile top bearing stratum or part Pile side soil layer intensity high, in all kinds of castinplace pile, improve bearing capacity of pile foundation by expanding stake end and soil body contact surface.Compared with preformed pile, due to friction when there is construction, little without soil compaction, noise, be suitable in advantages such as City Building City Regions uses, castinplace pile obtains applying comparatively widely in construction.
But the method improving bearing capacity due to existing castinplace pile expands stake end and soil body contact area, the methods such as drilling deep hole increase the soil body and realize the frictional force of pile body, reamer also for expanding umbrella shape stake end, increasing bearing capacity limited, cannot meet the requirement of required bearing capacity of pile foundation.
Utility model content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is that providing a kind of stretches reaming bit, and its hole expanded further can increase the contact area of stake end and the soil body, thus increases the bearing capacity of pile foundation further.
To achieve these goals, the stretching, extension reaming bit that the utility model provides, comprising:
Hoisting rotation axle, upper end is set to power jointing;
Rotary cutting apparatus, comprise at least one rotary-cut pivoted arm, the external surface of rotary-cut pivoted arm is provided with peeling knife; One end of rotary-cut pivoted arm is hinged on hoisting rotation axle, the axis of hinged place and the axes normal of hoisting rotation axle, and is provided with the retractable driving device driving the axis of rotary-cut pivoted arm around hinged place to rotate between rotary-cut pivoted arm and hoisting rotation axle; The maximum angle that the axis of described rotary-cut pivoted arm around hinged place rotates is obtuse angle.
As stretching the further technical scheme of reaming bit: the lower end of described hoisting rotation axle is plugged on can in rotating shaft cover, and the lower end of hoisting rotation axle and lifting travel can be provided with between the lower end overlapped of rotating shaft; Hoisting rotation axle is provided with lifting guide strip, lifting guide strip with can coordinate by the lifting gathering sill that puts of rotating shaft; Described lifting guide strip is provided with rotary steering slide rail, described can one end of rotating shaft cover hinging rotary guide strip, the other end of rotary steering plate is set to round end, the side of this round end is set to the swivel head coordinated with described rotary steering slide rail, one end of the opposite side articulated linkage of round end, the other end of connecting rod is hinged on rotary-cut pivoted arm;
Can rotating shaft cover lower end be set to round end, this round end can rotation be assemblied on fixed bearing; The bottom of fixed bearing is installed with foot rest.
Further: in described fixed bearing, be provided with a spherical member, described can rotating shaft cover round end be connected with described spherical member, and the centre of sphere of spherical member be positioned at can rotating shaft overlap axis on.
Further scheme: described rotary-cut pivoted arm is provided with two, lays respectively at the both sides of hoisting rotation axle, the axis being parallel of the hinged place of two rotary-cut pivoted arms and hoisting rotation axle.
Further scheme: the broach shell that the peeling knife on described rotary-cut pivoted arm is sleeved on rotary-cut pivoted arm by more piece gap forms; The external surface of each broach shell is covered with the cutter head of the teeth shape having several to protrude.
Further scheme: on described rotary-cut pivoted arm, broach shell is designated as head end broach shell, end broach shell, middle broach shell respectively according to residing position, middle broach shell is between head end broach shell and end broach shell and middle broach shell is at least provided with one, and the cutter head that head end broach shell, intermediate knife put protrudes along the radial direction of rotary-cut pivoted arm; At least one circle cutter head end broach shell being positioned at end is and is obliquely installed, and angle of inclination is identical.
Further scheme: described hoisting rotation axle is provided with position limit device, the lower caging device for limiting rotary-cut pivoted arm rotational angle.
The beneficial effects of the utility model are: the utility model stretches the stake end that reaming bit expands, and ensures that original bearing capacity of single pile is high, gives full play to the bottom bearing of pile-end soil; Embed stratum certain depth, anti-seismic performance is good; Expand the similar anchoring pile in hole, the advantages such as the more original pile-type of uplift resistance is significantly improved, friction during simultaneously the utility model construction, little without soil compaction, noise, be suitable in advantages such as City Building City Regions uses, and the drill bit in the utility model to have converging angles scope of compromise large, stressed equal power, structure is simple, and the adjustable feature of counter bore diameter, can meet the requirement of various reaming.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of middle rotary steering plate embodiment illustrated in fig. 1, connecting rod, rotary-cut pivoted arm part;
Fig. 4 is the structural representation of middle hoisting rotation axle embodiment illustrated in fig. 1;
Fig. 5 is the structural representation of middle rotary-cut pivoted arm embodiment illustrated in fig. 1;
Fig. 6 is the structural representation of original state embodiment illustrated in fig. 1;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the structural representation that rotary-cut pivoted arm in Fig. 6 turns to the top agretope;
Fig. 9 is the left view of Fig. 8;
Structural representation when Figure 10 is enforcement chambering process embodiment illustrated in fig. 1;
In figure:
1 power jointing;
2 hoisting rotation axles;
3 position limit devices;
4 rotary-cut pivoted arms;
5 rotary-cut cutter heads;
6 rotary-cut cutter head minor details;
7 lifting gathering sills;
8 can rotating shaft cover;
9 first jointed shafts;
10 rotary steering slide rails;
11 lifting guide strips;
12 lower caging devices;
13 connecting rods;
14 movable support axles;
15 rotary steering plates; 151 swivel heads;
16 rotary support cover fairleads;
17 ball shape rotary axle heads;
18 fixed bearings;
19 foot rests;
20 broach shells, 201 head end broach shells, 202 end broach shells, 203 middle broach shells,
21 cutter heads, 211 end cutter heads.
Detailed description of the invention
As Figure 1-5, this stretching, extension reaming bit mainly comprises hoisting rotation axle 2, rotary cutting apparatus.
The upper end of hoisting rotation axle 2 is set to power jointing 1.
Rotary cutting apparatus, comprise at least one rotary-cut pivoted arm 4, the external surface of rotary-cut pivoted arm 4 is provided with peeling knife.One end of rotary-cut pivoted arm 4 is hinged on hoisting rotation axle, and hinged place is that the first jointed shaft 9, first jointed shaft 9 is vertical with hoisting rotation axle 2.Be provided with the retractable driving device driving rotary-cut pivoted arm to rotate around the first jointed shaft 9 between rotary-cut pivoted arm 4 and hoisting rotation axle 2, rotary-cut pivoted arm 4 is obtuse angle around the maximum angle that the first jointed shaft 9 rotates.Retractable driving device wherein said in this embodiment have employed frame for movement realization.
Concrete frame for movement is as follows: the lower end of described hoisting rotation axle 2 is plugged on can in rotating shaft cover 8, and the lower end of hoisting rotation axle 2 and can rotating shaft overlap 8 lower end between be provided with lifting travel; Hoisting rotation axle 2 is provided with lifting guide strip 11, lifting guide strip 11 with can coordinate by the lifting gathering sill 7 that overlaps on 8 of rotating shaft; Described lifting guide strip 11 is provided with rotary steering slide rail 10, rotating shaft can overlap one end of 8 hinging rotary guide strips 15, the other end of rotary steering plate 15 is set to round end, the side of this round end is set to the swivel head 151 coordinated with described rotary steering slide rail, one end of the opposite side articulated linkage 13 of round end, the other end of connecting rod 13 is hinged on rotary-cut pivoted arm 4.
Can rotating shaft cover 8 lower end be set to round end, this round end can rotation be assemblied on fixed bearing 18;
The technology that this embodiment is taked is: in fixed bearing, arrange a spherical member 17, and spherical member 17 is fixed spherical concave surface restriction in bearing 18 and each other for being slidably matched; Can rotating shaft cover 8 round end be connected with spherical member 17, and the centre of sphere of spherical member 17 be positioned at can rotating shaft overlap 8 axis on; Like this, fixed bearing 18 pairs of spherical members 17 and can rotating shaft cover 8 formed support and position-limiting actions; Can rotating shaft cover 8 rotate time spherical member 17 rotate together, spherical member 17 serve support can rotating shaft cover 8.And adopt the degree of freedom of spherical member 17 higher, hoisting rotation axle 2, can life-span of rotating shaft cover 8 longer.
The bottom of fixed bearing 18 is installed with foot rest 19.
In addition, in this embodiment, rotary-cut pivoted arm 4 is provided with two, the both sides laying respectively at hoisting rotation axle 2 are hinged, the axis being parallel of two hinged places, in this embodiment, two rotary-cut pivoted arms 4 rotate the control being convenient to reaming shape around hinged place axis, and being namely convenient to form vertical tangent plane is oval hole.Two rotary-cut pivoted arm natural energies accelerate reaming efficiency, and three or more rotary-cut pivoted arms are easier to be controlled than arranging.
Further, in this embodiment, the broach shell 20 that the peeling knife on rotary-cut pivoted arm 4 is sleeved on rotary-cut pivoted arm by more piece gap forms; The external surface of each broach shell 20 is covered with the cutter head 21 of the teeth shape having several to protrude.The form of gap assembling broach shell 20 is less likely to occur stuck, because when running into the hard things such as rock, broach shell can be fast according to drag size self-regulating rotary, thus can not be stuck in hole.
Peeling knife also can adopt other modes to realize, on rotary-cut pivoted arm, the most simply fix the cutter head of cutter or some graininess projections exactly, can realize cutting, but this fixed be fixing so easily there is stuck phenomenon because of cutting tip.Therefore the preferred form adopting broach shell.
In addition, peeling knife causes rotary-cut linear velocity different because of rotary-cut radius difference, if adopt the peeling knife on a rotary-cut pivoted arm to be overall structure, peeling knife stuck phenomenon may be caused to occur, for avoiding have employed segment type structure and more piece broach shell in this type of event generation the present embodiment, prevent because stuck phenomenon when speed difference is excessive before and after cutting edge occurs.
Counter bore diameter size can be changed by the quantity changing rotary-cut pivoted arm 4 and interpolation broach shell.
In addition, the broach shell on described rotary-cut pivoted arm 4 is designated as head end broach shell 201, end broach shell 202, middle broach shell 203 respectively according to residing position, and middle broach shell 203 is between head end broach shell 201 and end broach shell 202 and middle broach shell 203 is at least provided with one.
Cutter head on head end broach shell 201, middle broach shell 202 protrudes along the radial direction of rotary-cut pivoted arm 4; At least one circle cutter head end broach shell 202 being positioned at end is and is obliquely installed, and angle of inclination is identical, and this circle cutter head is the end cutter head 211 in figure, to reduce in the soil such as rock hard objects to the impact of rotary-cut pivoted arm 4 with this.
Further scheme: described hoisting rotation axle is provided with the position limit device 3 for limiting rotary-cut pivoted arm rotational angle, lower caging device 12.Restriction site is exceeded when preventing rotary-cut pivoted arm 4 from rotating.
As shown in Figure 10, based on the chambering process of above-mentioned stretching, extension reaming bit, comprise the steps:
1) be connected with power set by hoisting rotation axle 2, power set comprise the device driving hoisting rotation axle lifting, the device driving hoisting rotation axle to rotate; During concrete enforcement, pile driver can be adopted to be power set;
2) stretch reaming bit and be placed in the straight hole accomplished fluently in advance, make in foot rest 19 patchhole subsoil, thus make fixed bearing 18 be fixed in straight hole; Stretch the original state of reaming bit as shown in Figure 6,7;
3) hoisting rotation axle 2 is by driving rotation, presses down hoisting rotation axle 2 while rotation; Lifting guide strip 11 slowly slide downward under the guide effect of lifting gathering sill 7, now the side of the swivel head of rotary steering plate 15 with rotary steering slide rail 10 for track is advanced, the opposite side of the swivel head of rotary steering plate 15 by connecting rod 13 make rotary-cut pivoted arm 4 around with hoisting rotation axle 2 hinged place for axially to rotate, rotary-cut pivoted arm 4 does and slowly upwards launches motion; Meanwhile, under soil resistance effect, the peeling knife being arranged on rotary-cut pivoted arm 4 external surface carries out rotary-cut to soil; When rotary-cut pivoted arm 4 rotates to time vertical with hoisting rotation axle 2, rotary-cut forms the latter half of oval reaming;
Continue to press down hoisting rotation axle 2, lifting guide strip 11 continues to glide, rotary steering slide rail 10 continues to move down, the swivel head of rotary steering plate 15 around rotary steering plate 15 with can continue equidirectional rotation in the rotating shaft hinged place of overlapping 8, swivel head drivening rod 13 drives rotary-cut pivoted arm 4 to continue equidirectional rotation, form closing action upwards, the peeling knife now on rotary-cut pivoted arm 4 carries out rotary-cut to soil, forms the first half of oval reaming; Now stretch the state of reaming bit as shown in Figure 8,9;
4) slowly on carry hoisting rotation axle 2, make lifting guide strip 11 slowly upward sliding under the guide effect of lifting gathering sill 7, the swivel head of rotary steering plate 15 under the impetus of rotary steering slide rail 10 around rotary steering plate 15 with can rotate backward the rotating shaft hinged place of overlapping 8, thus driving rotary-cut pivoted arm 4 to rotate backward around with hoisting rotation axle 2 hinged place by connecting rod 13, rotary-cut pivoted arm 4 is drops down slowly;
Continuation is carried hoisting rotation axle 2, rotary-cut pivoted arm 4 is retracted to initial position, as shown in Figure 6,7; Complete a reaming;
5) then make hoisting rotation axle 2 continue to rise, take out until stretch reaming bit, complete the operation extracting and stretch reaming bit.
The further technical scheme of chambering process, described hoisting rotation axle 2 is provided with position limit device 3, the lower caging device 12 for limiting rotary-cut pivoted arm rotational angle;
Step 3) in, press down hoisting rotation axle 2 to rotary-cut pivoted arm and contact with position limit device and terminate the action of upwards closing up;
Step 4) in, press down hoisting rotation axle 2 to rotary-cut pivoted arm and contact with lower caging device and terminate the action of closing up downwards.
As other embodiments stretching reaming bit, the retractable driving device wherein driving rotary-cut pivoted arm 4 to rotate around the first jointed shaft 9, also can adopt other modes such as cylinder or oil pump to realize.
Based on the chambering process of the stretching, extension reaming bit of these other embodiments, comprise the following steps:
1) be connected with power set by hoisting rotation axle 2, power set comprise the device driving hoisting rotation axle lifting, the device driving hoisting rotation axle to rotate;
2) stretch reaming bit and be placed in the straight hole accomplished fluently in advance:
3) hoisting rotation axle 2 is by driving rotation:
4) expansion action up or down made by the pivoted arm of startup retractable driving device driving rotary-cut simultaneously 4, continues to drive rotary-cut pivoted arm rotating in same direction to do the action of closing up up or down; Peeling knife on rotary-cut pivoted arm carries out cutting to hole wall and carries out reaming;
When this step is implemented, can also further: make the rise that hoisting rotation axle 2 does uniform speed slow or the action of falling; Making the hole expanded form vertical section is oval hole;
5) after reaming terminates; Hoisting rotation axle is made vertical motion by driving, and the final reaming bit entirety that stretches is taken out.
Claims (7)
1. stretch reaming bit, it is characterized in that, comprising:
Hoisting rotation axle, upper end is set to power jointing;
Rotary cutting apparatus, comprise at least one rotary-cut pivoted arm, the external surface of rotary-cut pivoted arm is provided with peeling knife; One end of rotary-cut pivoted arm is hinged on hoisting rotation axle, the axis of hinged place and the axes normal of hoisting rotation axle, and is provided with the retractable driving device driving the axis of rotary-cut pivoted arm around hinged place to rotate between rotary-cut pivoted arm and hoisting rotation axle; The maximum angle that the axis of described rotary-cut pivoted arm around hinged place rotates is obtuse angle.
2. stretching, extension reaming bit according to claim 1, is characterized in that: the lower end of described hoisting rotation axle is plugged on can in rotating shaft cover, and the lower end of hoisting rotation axle and lifting travel can be provided with between the lower end overlapped of rotating shaft; Hoisting rotation axle is provided with lifting guide strip, lifting guide strip with can coordinate by the lifting gathering sill that puts of rotating shaft; Described lifting guide strip is provided with rotary steering slide rail, described can one end of rotating shaft cover hinging rotary guide strip, the other end of rotary steering plate is set to round end, the side of this round end is set to the swivel head coordinated with described rotary steering slide rail, one end of the opposite side articulated linkage of round end, the other end of connecting rod is hinged on rotary-cut pivoted arm;
Can rotating shaft cover lower end be set to round end, this round end can rotation be assemblied on fixed bearing; The bottom of fixed bearing is installed with foot rest.
3. stretching, extension reaming bit according to claim 2, is characterized in that: be provided with a spherical member in described fixed bearing, described can rotating shaft cover round end be connected with described spherical member, and the centre of sphere of spherical member be positioned at can rotating shaft overlap axis on.
4. stretching, extension reaming bit according to claim 1, is characterized in that: described rotary-cut pivoted arm is provided with two, lays respectively at the both sides of hoisting rotation axle, the axis being parallel of the hinged place of two rotary-cut pivoted arms and hoisting rotation axle.
5., according to the arbitrary described stretching, extension reaming bit of claim 1-4, it is characterized in that: the broach shell that the peeling knife on described rotary-cut pivoted arm is sleeved on rotary-cut pivoted arm by more piece gap forms; The external surface of each broach shell is covered with the cutter head of the teeth shape having several to protrude.
6. stretching, extension reaming bit according to claim 5, it is characterized in that: on described rotary-cut pivoted arm, broach shell is designated as head end broach shell, end broach shell, middle broach shell respectively according to residing position, middle broach shell is between head end broach shell and end broach shell and middle broach shell is at least provided with one, and the cutter head that head end broach shell, intermediate knife put protrudes along the radial direction of rotary-cut pivoted arm; At least one circle cutter head end broach shell being positioned at end is and is obliquely installed, and angle of inclination is identical.
7. stretching, extension reaming bit according to claim 1, is characterized in that: described hoisting rotation axle is provided with position limit device, the lower caging device for limiting rotary-cut pivoted arm rotational angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520772260.0U CN205047160U (en) | 2015-09-30 | 2015-09-30 | Extend ream bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520772260.0U CN205047160U (en) | 2015-09-30 | 2015-09-30 | Extend ream bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047160U true CN205047160U (en) | 2016-02-24 |
Family
ID=55340752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520772260.0U Withdrawn - After Issue CN205047160U (en) | 2015-09-30 | 2015-09-30 | Extend ream bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047160U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178865A (en) * | 2015-09-30 | 2015-12-23 | 济南匠夫万自动化科技有限公司 | Retractable hole dilating drill and hole dilating technology |
-
2015
- 2015-09-30 CN CN201520772260.0U patent/CN205047160U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178865A (en) * | 2015-09-30 | 2015-12-23 | 济南匠夫万自动化科技有限公司 | Retractable hole dilating drill and hole dilating technology |
| CN105178865B (en) * | 2015-09-30 | 2017-12-01 | 济南匠夫万自动化科技有限公司 | Stretch reaming bit and chambering process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160224 Effective date of abandoning: 20171201 |
|
| AV01 | Patent right actively abandoned |