CN203145834U - Rock reamer - Google Patents
Rock reamer Download PDFInfo
- Publication number
- CN203145834U CN203145834U CN 201320098892 CN201320098892U CN203145834U CN 203145834 U CN203145834 U CN 203145834U CN 201320098892 CN201320098892 CN 201320098892 CN 201320098892 U CN201320098892 U CN 201320098892U CN 203145834 U CN203145834 U CN 203145834U
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- hobboing cutter
- correcting
- axle
- hob
- cylindricality
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Abstract
The utility model discloses a rock reamer comprising a hollow central shaft, a front corrector, a back corrector and a hob, wherein the central shaft is connected with a drill rod, the front corrector and the back corrector are fixedly arranged on the central shaft, the hob is arranged between the front corrector and the back corrector and can automatically rotate, the central axis of the hob is in parallel with the central shaft, the hob comprise a cylinder section with a centralizing function and a front end surface which is arranged at the front end of the cylinder section, and hard alloy teeth for crushing rocks are uniformly distributed on the front end surface and the outer circumference of the cylinder section. According to the rock reamer disclosed by the utility model, through the improvement of the structure of the hob and the arrangement of the position of the hob, the additional arrangement of a matched centralizer is effectively avoided on the reamer, the weight of a tool is reduced, the rotation torque is reduced, the cost is reduced, and the service life of the tool is prolonged; and in addition, the hob is clamped or in threaded connection between the front corrector and the back corrector, so that the detachment of the hob is convenient.
Description
Technical field
The utility model relates to rock and passes through the engineering construction field, particularly relates to a kind of rock reamer.
Background technology
At present, rock passes through in engineering field and mine, well, the oilfield applications reaming work progress, often meets rock, and each unit in charge of construction or drilling tool manufacturer adopt the dual mode reaming:
A kind of is that oil is slapped welded construction with gear wheel, and adopt the problem of this structure to be: temperature is too high when 1, welding is sealed with damage to the gear wheel bearing; 2, replacing efficient is low, need cut off the gear wheel of scrapping, and welds new gear wheel again, often wants the time of a couple of days; 3, gear wheel palm back is easy to wearing and tearing, and may wear to a certain degree will be worn out sealing, causes gear wheel to lose efficacy, even cause gear wheel to fall in the hole, causes drilling accident.
Second kind is replaceable hob type rock reamer, and replaceable hob type rock reamer has solved wheel and gear wheel palm back of the body wear problems.
But above two kinds of reamers are passing through rock reaming process for large-scale pipeline, after surpassing 800MM as 711 above pipeline counter bore diameters, following use problem is arranged: reamer adds that supporting centralizer weight is very heavy, drilling tool is beated greatly, driving torque is also very big, but when surpassing the drilling rod tolerance range, causes drilling rod to rupture in a large number, handle very difficult, even cause boring scrap.When cutting simultaneously, rock particles is big, and inconvenient mud carries, and the rock slag is piled up in the hole, causes reaming and trustship difficulty.
Summary of the invention
The technical problems to be solved in the utility model provide a kind ofly be convenient to change hobboing cutter, moment of torsion is low and the rock reamer of long service life.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows:
Described rock reamer comprise the hollow of jointed rod central axis, be packed in preceding correcting and the back correcting on the described central axis and be arranged on described before between correcting and the back correcting and hobboing cutter that can rotation, the central axis of described hobboing cutter and described central axes setting, described hobboing cutter comprises cylindrical section with centralizing function and is formed on the front end face of this cylindrical section front end, is evenly equipped with hard-metal insert for fractured rock at the outer peripheral face of described front end face and cylindrical section.
The axle that described hobboing cutter comprises shell and is installed in the shell middle part also is provided with bearing and sealing device between shell and axle.
Described hobboing cutter is provided with three at least at described central axis circumferencial direction, and described preceding correcting and back correcting all are provided with three at least at described central axis circumferencial direction.
According to an embodiment of the present utility model, described leading just rearward is provided with dish on, correcting front portion, described back is provided with a low bottom-disc, on described coiling, the interval of two described preceding correctings all is fixedly connected with a upper cutter head, described upper cutter head middle part is formed with circular hole on, the bottom is formed with draw-in groove on, on the described low bottom-disc, the interval of per two described back correctings all is fixedly connected with tool rest, described tool rest down middle part is formed with circular hole, the upper end is formed with a lower bayonet slot, on described, the central lines of following circular hole, described on, lower bayonet slot is the square circular groove that a side is formed with an opening.
Described hobboing cutter is the cylindricality hobboing cutter, and the front end face of this cylindricality hobboing cutter is sphere or the conical surface, and this cylindricality hobboing cutter is arranged between the described upper and lower tool rest by a location bearing pin, and described cylindricality hobboing cutter can rotate with respect to its axle.
The middle part hollow of described cylindricality cutter shaft, described alignment pin pass successively the axle of circular hole, cylindricality hobboing cutter and down the two ends of circular hole and this alignment pin be in respectively in the described upper and lower circular hole and be removably fixing by fastening devices.
The two ends of described alignment pin removably are fixed in the described upper and lower circular hole by a pin respectively.
The shaft shoulder gabarit at the axle two ends of described cylindricality hobboing cutter is the square circular that is complementary with upper and lower draw-in groove, and the shaft shoulder at the axle two ends of this cylindricality hobboing cutter snaps in the upper and lower draw-in groove respectively and makes that axle and upper and lower tool rest are circumferentially fixing.
Adopt technique scheme, because hobboing cutter and central axes setting, also be provided with cylindrical section on the hobboing cutter, such structure has played the effect of roller centralizer, thereby avoided installing supporting centralizer additional at reamer, alleviated instrument weight, reduced driving torque, reduce cost, strengthened the application life of instrument.Its rotation relatively of the shell of described hobboing cutter, the hobboing cutter of circumferential uniform setting and forward and backward correcting can make that the stability of instrument is stronger, the functional reliability height.Described cylindricality hobboing cutter is installed on the upper and lower tool rest by alignment pin, does not need other welding, has made things convenient for replacing cylindricality hobboing cutter; Such structure does not exist oil to carry on the back the problem that effect of attrition seals with the gear wheel palm, effectively raises the application life of cylindricality hobboing cutter; Simultaneously, the cylindrical section of cylindricality hobboing cutter plays the effect of roller centralizer, does not need other supporting centralizer, has alleviated drilling tool weight greatly, effectively reduces moment of torsion, and stability of rotation makes the risk of drill rod breaking drop to minimum.In addition, the hard-metal insert of cylindricality hobboing cutter front end face cuts fractured rock, reaches the purpose of reaming in rock, and the hard-metal insert on the cylindrical section is the bulky grain rock slag under the broken cutting in rolling process, make things convenient for mud to carry, realized the reamer rock cutting, set upright the combination function with detritus.
According to another embodiment of the present utility model, described rock reamer comprise the hollow of jointed rod central axis, be packed in preceding correcting and the back correcting on the described central axis and be arranged on described before between correcting and the back correcting and hobboing cutter that can rotation, the central axis of described hobboing cutter and described central axes setting, described hobboing cutter comprises cylindrical section with centralizing function and is formed on the front end face of this cylindrical section front end, is evenly equipped with hard-metal insert for fractured rock at the outer peripheral face of described front end face and cylindrical section.
The axle that described hobboing cutter comprises shell and is installed in the shell middle part also is provided with bearing and sealing device between shell and axle.
Described hobboing cutter is provided with three at least at described central axis circumferencial direction, and described preceding correcting and back correcting all are provided with three at least at described central axis circumferencial direction.
Described hobboing cutter is conical hob, the front end face of this conical hob is sphere or the conical surface, the bottom of the axle of described conical hob is fixedly connected with a contiguous block, this contiguous block bottom is fixedly connected with one or six sides, described contiguous block is that back taper and external surface are formed with screw thread, the axle of described conical hob is threaded in correcting top, back by contiguous block, and described conical hob can rotate with respect to its axle.
Be reserved with the headspace that conical hob is installed before described between correcting and the conical hob, correcting upper end, described back is provided with a chassis, be welded with a base that is threaded with contiguous block on this chassis, this base bottom is provided with for the shrinkage pool of placing six sides, and the volume of this shrinkage pool is greater than six sides' volume and can hold spanner and rotate six sides in shrinkage pool.
Adopt technique scheme, because hobboing cutter and central axes setting, also be provided with cylindrical section on the hobboing cutter, such structure has played the effect of roller centralizer, thereby avoided installing supporting centralizer additional at reamer, alleviated instrument weight, reduced driving torque, reduce cost, strengthened the application life of instrument.Its rotation relatively of the shell of described hobboing cutter, the hobboing cutter of circumferential uniform setting and forward and backward correcting can make that the stability of instrument is stronger, the functional reliability height.Described conical hob is installed together by screw thread and back correcting, need not weld, and rotates six sides by spanner in shrinkage pool and gets final product conical hob for convenience detach; Such structure does not exist oil with the problem of gear wheel palm back of the body effect of attrition sealing, effectively raises the conical hob life-span; Simultaneously, the cylindrical section of conical hob plays the effect of roller centralizer, does not need other supporting centralizer, has alleviated drilling tool weight greatly, effectively reduces moment of torsion, and stability of rotation makes the risk of drill rod breaking drop to minimum.In addition, hard-metal insert cutting fractured rock on the conical hob awl front end face, reach the purpose of reaming in rock, hard-metal insert on the cylindrical section is the bulky grain rock slag under the broken cutting in rolling process, make things convenient for mud to carry, realized the reamer rock cutting, set upright the combination function with detritus.
In sum, the utility model has effectively been avoided installing supporting centralizer additional at reamer by to the improvement of hobboing cutter structure and the layout of position, has alleviated instrument weight, has reduced driving torque, has reduced cost, has strengthened the application life of instrument; In addition, before clamping or be threaded in, hobboing cutter between correcting and the back correcting, made things convenient for the dismounting of hobboing cutter.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the utility model rock reamer;
Fig. 2 is the structural representation of cylindricality hobboing cutter among Fig. 1;
Fig. 3 is the structural representation of second kind of embodiment of the utility model rock reamer;
Fig. 4 is the structural representation of conical hob among Fig. 3.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
A lot of details have been set forth in the following description so that fully understand the utility model, but, the utility model can also adopt other to be different from other modes described here and implement, and therefore, the utility model is not limited to the restriction of following public specific embodiment.
Illustrated in figures 1 and 2 is an embodiment of the present utility model.As shown in the figure, this reamer comprises central axis 1, preceding correcting 2, back correcting 3 and the cylindricality hobboing cutter 5 of the hollow that two ends are communicated with drilling rod.Described central axis 1 circumferencial direction be provided with at least three described before the described back correcting 3 of correctings 2 and at least three and three described before correcting 2 and after correcting 3 circumferential uniform settings, at least be provided with three cylindricality hobboing cutters 5 and three cylindricality hobboing cutter 5 circumferential uniform settings between correcting 2 and the back correcting 3 before described, the central axis of this cylindricality hobboing cutter 5 and central axis 1 be arranged in parallel.
The axle that described cylindricality hobboing cutter 5 comprises shell and is installed in the shell middle part, between shell and axle, also be provided with bearing (not shown) and sealing device (not shown), described shell can rotate relative to its axle, described cylindricality hobboing cutter 5 shells comprise cylindrical section and are formed on the front end face of this cylindrical section front end, be evenly equipped with hard-metal insert 4 for fractured rock at the outer peripheral face of described front end face and cylindrical section, described front end face is the sphere that outwards protrudes.Hard-metal insert 4 on the front end face cuts fractured rocks, reaches the purpose of reaming in rock, and the hard-metal insert 4 on the cylindrical section is the bulky grain rock slag under the broken cutting in rolling process, makes things convenient for mud to carry.Simultaneously, the cylindrical section of cylindricality hobboing cutter 5 plays the effect of roller centralizer, does not need other supporting centralizer, has alleviated drilling tool weight greatly, effectively reduces moment of torsion, and stability of rotation makes the risk of drill rod breaking drop to minimum.
Correcting 2 rear portions are provided with and coil 13 on one before described, correcting 3 front portions, described back are provided with a low bottom-disc 14, described going up on the dish 13, the interval of per two described preceding correctings 2 all is fixedly connected with a upper cutter head 7, described upper cutter head 7 middle parts are formed with circular hole on, the bottom is formed with draw-in groove on, on the described low bottom-disc 14, the interval of per two described back correctings 3 all is fixedly connected with tool rest 8, described tool rest 8 middle parts down are formed with circular hole, the upper end is formed with a lower bayonet slot, on described, the central lines of following circular hole, described on, lower bayonet slot is the square circular groove that a side is formed with an opening.
This cylindricality hobboing cutter 5 is arranged between the described upper and lower tool rest 7,8 by a location bearing pin 6, and described cylindricality hobboing cutter 5 can rotate with respect to its axle.The middle part hollow that described cylindricality hobboing cutter is 5, described alignment pin 6 pass successively the axle of circular hole, cylindricality hobboing cutter 5 and down the two ends of circular hole and this alignment pin 6 be in respectively in the described upper and lower circular hole and be removably fixing by fastening devices.
Preferably, the two ends of described alignment pin 6 removably are fixed in the described upper and lower circular hole by a pin (not shown) respectively.
The shaft shoulder gabarit at the axle two ends of described cylindricality hobboing cutter 5 is the square circular that is complementary with upper and lower draw-in groove, and the shaft shoulder at the axle two ends of this cylindricality hobboing cutter 5 snaps in the upper and lower draw-in groove respectively and makes that axle and upper and lower tool rest 7,8 are circumferentially fixing.
When cylindricality hobboing cutter 5 is installed, aim at the upper and lower draw-in groove opening on the upper and lower tool rest 7,8 and earlier the cylindricality hobboing cutter is put between the upper and lower tool rest 7,8 along opening, again alignment pin 6 is inserted in the axle and following circular hole of circular hole, cylindricality hobboing cutter 5, alignment pin 6 two ends are fixed in the described upper and lower circular hole by a pin (not shown) respectively, and cylindricality hobboing cutter 5 namely installs; When unloading cylindricality hobboing cutter 5, earlier pin is extracted, take out alignment pin 6 successively again and cylindricality hobboing cutter 5 gets final product.
By loading and unloading alignment pin 6, can change the cylindricality hobboing cutter easily; Alignment pin 6 and upper and lower tool rest 7,8 dismountable fixing, the shaft shoulder at 5 two ends of cylindricality hobboing cutter and upper and lower tool rest 7,8 also fix by the square circular structure, such structure can be transmitted the moment of torsion that central axis brings the cylindricality hobboing cutter stably, has strengthened the reliability of work.
In rock reaming work progress, rig drives drilling rod and clockwise rotates, drilling rod drives central axis 1 and clockwise rotates, cylindricality hobboing cutter 5 revolves round the sun clockwise with central axis 1, meanwhile cylindricality hobboing cutter 5 produces counterclockwise rotation under the effect of rock reaction force, and the hard-metal insert 4 on these cylindricality hobboing cutter 5 front end faces cuts fractured rocks, reaches the purpose of reaming in rock, hard-metal insert 4 on the cylindrical section is the bulky grain rock slag under the broken cutting in rolling process, makes things convenient for mud to carry.
Fig. 3 and Figure 4 shows that another embodiment of the present utility model.As shown in the figure, this reamer comprises central axis 1, preceding correcting 2, back correcting 3 and the conical hob 9 of the hollow that two ends are communicated with drilling rod.Described central axis 1 circumferencial direction be provided with at least three described before the described back correcting 3 of correctings 2 and at least three and three described before correcting 2 and after correcting 3 circumferential uniform settings, at least be provided with three conical hobs 9 and three conical hob 9 circumferential uniform settings between correcting 2 and the back correcting 3 before described, the central axis of this conical hob 9 and central axis 1 be arranged in parallel.
The axle that described conical hob 9 comprises shell and is installed in the shell middle part, between shell and axle, also be provided with bearing (not drawing among the figure) and sealing device (not drawing among the figure), described shell can rotate relative to its axle, described conical hob 9 shells comprise cylindrical section and are formed on the front end face of this cylindrical section front end, be evenly equipped with hard-metal insert 4 for fractured rock at the outer peripheral face of described front end face and cylindrical section, described front end face is the conical surface that outwards protrudes.Hard-metal insert 4 on the front end face cuts fractured rocks, reaches the purpose of reaming in rock, and the hard-metal insert 4 on the cylindrical section is the bulky grain rock slag under the broken cutting in rolling process, makes things convenient for mud to carry.Simultaneously, the cylindrical section of conical hob 9 plays the effect of roller centralizer, does not need other supporting centralizer, has alleviated drilling tool weight greatly, effectively reduces moment of torsion, and stability of rotation makes the risk of drill rod breaking drop to minimum.
9 bottoms of described conical hob are fixedly connected with a contiguous block 10, these contiguous block 10 bottoms are fixedly connected with one or six sides 11, described contiguous block 10 is formed with screw thread for back taper and external surface, described conical hob 9 is threaded in correcting 3 tops, back by contiguous block 10, and described conical hob 9 can rotate with respect to its axle.Be reserved with the headspace that conical hob is installed before described between correcting 2 and the conical hob 9, correcting 3 upper ends, described back are connected with a chassis 15, these 15 tops, chassis are welded with a base 12 that is threaded with contiguous block 10, these base 12 bottoms are provided with for the shrinkage pool of placing six sides 11, and the volume of this shrinkage pool is greater than six sides' 11 volume and can hold spanner and rotate six sides 11 in shrinkage pool.
In rock reaming work progress, rig drives drilling rod and clockwise rotates, drilling rod drives central axis 1 and clockwise rotates, conical hob 9 revolves round the sun clockwise with central axis 1, meanwhile conical hob 9 produces counterclockwise rotation under the effect of rock reaction force, and the hard-metal insert 4 on these conical hob 9 front end faces cuts fractured rocks, reaches the purpose of reaming in rock, hard-metal insert 4 on the cylindrical section is the bulky grain rock slag under the broken cutting in rolling process, makes things convenient for mud to carry.
Among above-mentioned two embodiment, the front end face preferred structure of described cylindricality hobboing cutter 5 is sphere, but also can be chosen as the conical surface or other have the structure of effect same; The front end face preferred structure of described conical hob 9 is the conical surface, but also can be chosen as sphere or other have the structure of effect same.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. rock reamer, comprise the hollow of jointed rod central axis (1), be packed in preceding correcting (2) and the back correcting (3) on the described central axis and be arranged on described before between correcting (2) and the back correcting (3) and hobboing cutter that can rotation, it is characterized in that: the central axis of described hobboing cutter and described central axis (1) be arranged in parallel, described hobboing cutter comprises cylindrical section with centralizing function and is formed on the front end face of this cylindrical section front end, is evenly equipped with hard-metal insert (4) for fractured rock at the outer peripheral face of described front end face and cylindrical section.
2. according to the described rock reamer of claim 1, it is characterized in that: the axle that described hobboing cutter comprises shell and is installed in the shell middle part also is provided with bearing and sealing device between shell and axle.
3. according to the described rock reamer of claim 1, it is characterized in that: described hobboing cutter is provided with three at least at described central axis (1) circumferencial direction, and described preceding correcting (2) and back correcting (3) all are provided with three at least at described central axis (1) circumferencial direction.
4. according to each described rock reamer among the claim 1-3, it is characterized in that: correcting (2) rear portion is provided with dish (13) on before described, correcting (3) front portion, described back is provided with a low bottom-disc (14), described going up on the dish (13), the interval of per two described preceding correctings (2) all is fixedly connected with a upper cutter head (7), described upper cutter head (7) middle part is formed with circular hole on, the bottom is formed with draw-in groove on, on the described low bottom-disc (14), the interval of per two described back correctings (3) all is fixedly connected with tool rest (8), described tool rest (8) down middle part is formed with circular hole, the upper end is formed with a lower bayonet slot, on described, the central lines of following circular hole, described on, lower bayonet slot is the square circular groove that a side is formed with an opening.
5. according to the described rock reamer of claim 4, it is characterized in that: described hobboing cutter is cylindricality hobboing cutter (5), the front end face of this cylindricality hobboing cutter (5) is sphere or the conical surface, this cylindricality hobboing cutter (5) is arranged between the described upper and lower tool rest (7,8) by a location bearing pin (6), and described cylindricality hobboing cutter (5) can rotate with respect to its axle.
6. according to the described rock reamer of claim 5, it is characterized in that: the middle part hollow of described cylindricality hobboing cutter (5) axle, the axle that described alignment pin (6) is passed circular hole, cylindricality hobboing cutter (5) successively reaches circular hole down, and the two ends of this alignment pin (6) are in the described upper and lower circular hole also removably fixing by fastening devices respectively.
7. according to the described rock reamer of claim 6, it is characterized in that: the two ends of described alignment pin (6) removably are fixed in the described upper and lower circular hole by a pin respectively.
8. according to the described rock reamer of claim 7, it is characterized in that: the shaft shoulder gabarit at the axle two ends of described cylindricality hobboing cutter (5) is the square circular that is complementary with described upper and lower draw-in groove, and the shaft shoulder at the axle two ends of this cylindricality hobboing cutter (5) snaps in the upper and lower draw-in groove respectively and makes that axle and upper and lower tool rest (7,8) are circumferentially fixing.
9. according to each described rock reamer among the claim 1-3, it is characterized in that: described hobboing cutter is conical hob (9), the front end face of this conical hob (9) is sphere or the conical surface, the bottom of the axle of described conical hob (9) is fixedly connected with a contiguous block (10), this contiguous block (10) bottom is fixedly connected with one or six sides (11), described contiguous block (10) is formed with screw thread for back taper and external surface, the axle of described conical hob (9) is threaded in correcting (3) top, back by contiguous block (10), and described conical hob (9) can rotate with respect to its axle.
10. according to the described rock reamer of claim 9, it is characterized in that: be reserved with the headspace that conical hob (9) is installed before described between correcting (2) and the conical hob (9), described back correcting (3) upper end is provided with a chassis (15), be fixed with a base (12) that is threaded with contiguous block (10) on this chassis (15), this base (12) bottom is provided with for the shrinkage pool of placing six sides (11), and the volume of this shrinkage pool is greater than six sides' (11) volume and can hold spanner and rotate six sides (11) in shrinkage pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098892 CN203145834U (en) | 2013-03-05 | 2013-03-05 | Rock reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320098892 CN203145834U (en) | 2013-03-05 | 2013-03-05 | Rock reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145834U true CN203145834U (en) | 2013-08-21 |
Family
ID=48973370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320098892 Expired - Fee Related CN203145834U (en) | 2013-03-05 | 2013-03-05 | Rock reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203145834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161406A (en) * | 2013-03-05 | 2013-06-19 | 佟功喜 | Rock reamer |
-
2013
- 2013-03-05 CN CN 201320098892 patent/CN203145834U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161406A (en) * | 2013-03-05 | 2013-06-19 | 佟功喜 | Rock reamer |
| CN103161406B (en) * | 2013-03-05 | 2015-04-15 | 佟功喜 | Rock reamer |
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| 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 |
Granted publication date: 20130821 Termination date: 20180305 |
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| CF01 | Termination of patent right due to non-payment of annual fee |