CN203879383U - Tooth cutting reamer bit - Google Patents
Tooth cutting reamer bit Download PDFInfo
- Publication number
- CN203879383U CN203879383U CN201420245750.0U CN201420245750U CN203879383U CN 203879383 U CN203879383 U CN 203879383U CN 201420245750 U CN201420245750 U CN 201420245750U CN 203879383 U CN203879383 U CN 203879383U
- Authority
- CN
- China
- Prior art keywords
- reaming bit
- pick
- reamer
- main body
- tooth
- 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
Links
Abstract
The utility model discloses a tooth cutting reamer bit. The tooth cutting reamer bit is characterized by comprising a reamer bit body, reamer teeth and lug seats, an external thread connecting rod is arranged at the upper end of the reamer bit body, an internal thread connecting body is arranged at the lower end of the reamer bit body, the lug seats are evenly distributed in the circumferential direction of the internal thread connecting body, double rows of the reamer teeth with different cutting angles are embedded in the periphery of the reamer bit body, and through holes are evenly distributed between the reamer teeth. When the tooth cutting reamer bit is used for drilling, the reamer bit carries out guiding through a cone structure, deviation is avoided, and therefore hole forming quality is improved. Meanwhile, the reamer teeth act on rock walls through the action of point contact, the cutting capacity of the bit is improved, and the reamer bit is simple in structure, low in manufacturing cost, strong in cutting capacity and especially suitable for carrying out fast drilling in soft broken rock bodies.
Description
Technical field
The utility model relates to boring mechanic and manufactures and designs field, relates in particular to a kind of pick reaming bit.
Background technology
In drilling project field, usually relate to the Soft and Cracked Rocks large diameter borehole constructions such as coal seam.At present, using drill bit is widely scraper type drill bit, and tungsten carbide button's scraper when Soft and Cracked Rocks is crept into, easily occur bit freezing phenomenon, and such drill bit is mainly used in slim hole.Also have a kind of cutter type drill bit, the large diameter borehole of can constructing in Soft and Cracked Rocks, but because its rate of penetration is slow especially, can not make full use of the advantage that Soft and Cracked Rocks is easily crept into, its cost and costliness thereof, fall from favor simultaneously.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, smear metal power is strong, can be in Soft and Cracked Rocks the pick reaming bit of fast drilling large diameter borehole.
A kind of pick reaming bit, it is characterized in that: comprise reaming bit main body, reamer tooth and ear seat, reaming bit main body upper end is provided with the external screw thread connecting rod that can be connected with starter, lower end is provided with the internal thread connector that can be connected with drilling rod, some ear seats are circumferentially uniform along internal thread connector, drill main body is inlayed double some reamer teeth around, and through hole is distributed between reamer tooth.
Described drill main body is hollow vertebral body structure, is communicated with external screw thread connecting rod, internal thread connector and through hole, guarantees that cooling water or wind enter smear metal point.
Described ear seat is open circles ring body, can be used as the pick reaming bit Shi Huituo bindiny mechanism that comes off.
Described reamer tooth bores tooth by the first brill tooth and second and forms, first bores tooth becomes 25 ~ 45 degree, becomes 30 ~ 45 degree smear metal angles with the horizontal tangent line of reaming bit main body with reaming bit longitudinal centre line, second bores tooth becomes 45 ~ 60 degree, becomes 15 ~ 30 degree smear metal angles with the horizontal tangent line of reaming bit main body with reaming bit longitudinal centre line.
Described reamer tooth consists of pick, toothholder, back-up ring and retaining bolt, and pick is embedded in toothholder, and afterbody connects back-up ring and retaining bolt, prevents that pick from coming off.
Described retaining bolt consists of nut, swivel nut, bolt, and swivel nut length is less than pick diameter, and bolt length is greater than pick diameter, guarantees that pick is easy to loading and unloading.
The utility model beneficial effect is compared with prior art that reaming bit utilizes vertebral body structure to lead, and avoids creeping into being offset, and improves hole quality; Utilize the pick at double different smear metals angle to break rock reaming simultaneously, the line contact that changes scraper type is the contact of pick formula point, increased pressure, improved reaming bit smear metal ability, be not subject to the restriction of bore diameter size simultaneously, be a kind of simple in structure, cheap, smear metal power is strong, is specially adapted to the reaming bit of fast drilling in Soft and Cracked Rocks.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Fig. 4 is the C-C sectional view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but therefore the utility model is not limited among described scope of embodiments.
Participate in Fig. 1 to Fig. 3, a kind of pick reaming bit, comprise reaming bit main body 1, reamer tooth 2 and ear seat 3, reaming bit main body 1 upper end is provided with external screw thread connecting rod 11, lower end is provided with internal thread connector 12, some ear seats 3 are circumferentially uniform along internal thread connector 12, and drill main body 1 is inlayed double some reamer teeth 2 around, and through hole 13 is distributed between reamer tooth.
Described drill main body 1 is hollow vertebral body structure, is communicated with external screw thread connecting rod 11, internal thread connector 12 and through hole 13.
Described ear seat 3 is open circles ring body.
Described reamer tooth 2 bores tooth 2b by the first brill tooth 2a and second and forms, first bores tooth 2a becomes 25 ~ 45 degree, becomes 30 ~ 45 degree smear metal angles with the horizontal tangent line of reaming bit main body 1 with reaming bit main body 1 longitudinal centre line, second bores tooth 2b becomes 45 ~ 60 degree, becomes 15 ~ 30 degree smear metal angles with the horizontal tangent line of reaming bit main body 1 with reaming bit main body 1 longitudinal centre line.
Referring to Fig. 4, described reamer tooth 2 consists of pick 21, toothholder 22, back-up ring 23 and retaining bolt 24, and pick 21 is embedded in toothholder 22, and afterbody connects back-up ring 23 and retaining bolt 24.
Referring to Fig. 4, described retaining bolt 24 consists of nut 241, swivel nut 242, bolt 243, and swivel nut 242 length are less than pick 21 diameters, and bolt 243 length are greater than pick 21 diameters.
Although described by reference to the accompanying drawings above embodiment of the present utility model, but those of ordinary skill in the art also can recognize making various variations or modification in the scope of claims, these modifications and variations are interpreted as within scope of the present utility model and intention.
Claims (6)
1. a pick reaming bit, it is characterized in that: comprise reaming bit main body (1), reamer tooth (2) and ear seat (3), reaming bit main body (1) upper end is provided with external screw thread connecting rod (11), lower end is provided with internal thread connector (12), some ear seats (3) are circumferentially uniform along internal thread connector (12), reaming bit main body (1) is inlayed double some reamer teeth (2) around, and through hole (13) is distributed between reamer tooth.
2. a kind of pick reaming bit according to claim 1 is characterized in that: described reaming bit main body (1) is hollow vertebral body structure, is communicated with external screw thread connecting rod (11), internal thread connector (12) and through hole (13).
3. a kind of pick reaming bit according to claim 1 is characterized in that: described ear seat (3) is open circles ring body.
4. a kind of pick reaming bit according to claim 1 is characterized in that: described reamer tooth (2) bores tooth (2b) by the first brill tooth (2a) and second and forms, first bore tooth (2a) becomes with reaming bit main body (1) longitudinal centre line 25 ~ 45 degree, with reaming bit main body (1) laterally tangent line become 30 ~ 45 degree smear metal angles, second bores tooth (2b) becomes with reaming bit main body (1) longitudinal centre line 45 ~ 60 to spend, becomes 15 ~ 30 to spend smear metal angles with the horizontal tangent line of reaming bit main body (1).
5. a kind of pick reaming bit according to claim 1 is characterized in that: described reamer tooth (2) consists of pick (21), toothholder (22), back-up ring (23) and retaining bolt (24), pick (21) is embedded in toothholder (22), and afterbody connects back-up ring (23) and retaining bolt (24).
6. a kind of pick reaming bit according to claim 5 is characterized in that: described retaining bolt (24) consists of nut (241), swivel nut (242), bolt (243), swivel nut (242) length is less than pick (21) diameter, and bolt (243) length is greater than pick (21) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245750.0U CN203879383U (en) | 2014-05-14 | 2014-05-14 | Tooth cutting reamer bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245750.0U CN203879383U (en) | 2014-05-14 | 2014-05-14 | Tooth cutting reamer bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879383U true CN203879383U (en) | 2014-10-15 |
Family
ID=51679896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245750.0U Expired - Fee Related CN203879383U (en) | 2014-05-14 | 2014-05-14 | Tooth cutting reamer bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879383U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685605A (en) * | 2019-11-04 | 2020-01-14 | 李茂林 | Additional drilling assisting device for oil field roller bit |
-
2014
- 2014-05-14 CN CN201420245750.0U patent/CN203879383U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685605A (en) * | 2019-11-04 | 2020-01-14 | 李茂林 | Additional drilling assisting device for oil field roller bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160514 |