CN201934033U - Boring tool centralizer for replaceable mining screw rod - Google Patents
Boring tool centralizer for replaceable mining screw rod Download PDFInfo
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- CN201934033U CN201934033U CN2011200344877U CN201120034487U CN201934033U CN 201934033 U CN201934033 U CN 201934033U CN 2011200344877 U CN2011200344877 U CN 2011200344877U CN 201120034487 U CN201120034487 U CN 201120034487U CN 201934033 U CN201934033 U CN 201934033U
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- centralizer
- cirque body
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Abstract
The utility model relates to a boring tool centralizer for a replaceable mining screw rod. The boring tool centralizer for the replaceable mining screw rod is characterized by consisting of an external cirque body, an internal cirque body and a plurality of webs, wherein the external cirque body has smooth external wall; the internal cirque body is movably connected with the screw rod shell of the screw rod boring tool; the external cirque body is sheathed at the external side of the internal cirque body and is arranged coaxially to the internal cirque body; two ends of the internal cirque body symmetrically extend to the outside of the external cirque body; the height of the internal cirque body is 1.4 to 3 times of the height of the external cirque body; the plurality of webs are arranged along the radial direction and are uniformly distributed and fixedly connected between the internal cirque body and the external cirque body by encircling the internal cirque body; a plurality of overflow slots are formed between the external cirque body and the internal cirque body; a wearable layer is arranged on the external wall of the external cirque body; and the centralizer is an integrated part. The boring tool centralizer has the benefits of improving the centralizing effect, being easy to machine, being convenient to replace, being flexible and convenient for use, and reducing machining cost and application cost.
Description
Technical field
The utility model relates to a kind of mining centralizer for screwdrill, relates in particular to the mining centralizer for screwdrill of a kind of changeable type.
Background technology
In trenchless engineering, helicoid hydraulic motor is used widely.Helicoid hydraulic motor is a kind of positive displacement motor, enter helicoid hydraulic motor by high pressure drilling liquid by drilling rod after, hydraulic pressure can be converted into mechanical energy, rotor drives main shaft and drill bit rotation, drill bit creeps into, and reaches the purpose of boring.Centralizer is the important component part in the helicoid hydraulic motor combination, is connected on the screw rod housing, in order to preventing hole scattering, and helps the drill bit smooth working.
Existing centralizer for screwdrill is that the cylindrical shell with helicoid hydraulic motor is processed as one, spiral centralizer or straightedge formula centralizer are arranged, the cylindric outer wall of spiral centralizer is provided with some spirality fins, is the groove by circulating mud between the spirality fin; The cylindric outer wall of straightedge formula centralizer is provided with some axial fins, axially is the groove by circulating mud between fin.
The major technique defective of existing centralizer for screwdrill is: because the housing of centralizer and helicoid hydraulic motor is a monolithic devices, drill bit or reamer size and diameter of the housing differ bigger again, make the centralizer difficulty of processing big; In addition, be setting at interval as setting upright the spirality fin or the axial fin that hold flour milling, only account for the part on whole centralizer cylinder outer wall surface, the variation of stratum soft or hard in addition makes centralizer can not play centralizing function effectively, cause the helicoid hydraulic motor body wear serious, drill bit or reamer damage in advance, will cause whole drilling tool failure after the centralizer wearing and tearing, therefore, need to increase the acknowledgment copy stored number in using at the scene, cause very big waste.In reality processing, when the centralizer diameter has just reached the limit of processing during greater than two times of helicoid hydraulic motor diameter of the housing to the requirement of design, technology, at this moment, can only process centralizer separately, be connected on the helicoid hydraulic motor housing by welding procedure again, but for satisfying the helicoid hydraulic motor bulk strength, the helicoid hydraulic motor housing adopts medium carbon alloy steel, welding requirements than higher, the hidden danger that crackle stays operating trouble occurred if any the improper welding position that will cause.
The utility model content
Main purpose of the present utility model is at the problems referred to above, improves on the existing structure basis, provides a kind of changeable type mining centralizer for screwdrill, make and set upright the effect raising, be easy to processing, be convenient to replacing, flexible and convenient to use, reduce processing and application cost.
The technical scheme that its technical problem that solves the utility model adopts is:
The mining centralizer for screwdrill of a kind of changeable type, it is characterized in that it being that interior torus and a plurality of disc that flexibly connects by the smooth cylindrical ring body of outer wall, with the housing of helicoid hydraulic motor constitutes, described cylindrical ring body is placed in the described interior torus outside and is coaxially set with it, interior torus two ends symmetry extends the outer toroid external body, described a plurality of disc is disposed radially and is fixedly connected between interior torus and the cylindrical ring body around interior torus is uniform, forms a plurality of chutes of crossing outside between torus and the interior torus.
The wearing layer that thickness is 2-3mm is set on the outer wall of described cylindrical ring body.
This centralizer is an integral piece.
The torus inwall is provided with connecting thread in described.
Toric height is 180-220mm in described, and interior toric height is 1.4-3 a times of outer toroid height degree.
The quantity of described disc is 3-5.
The beneficial effects of the utility model are: the centralizer after the improvement and the housing of helicoid hydraulic motor are the replaceable form of split, and separately processing is not subjected to size restrictions, solved because boring aperture excessive can't be on housing the difficult point of whole processing centralizer; In addition,, change centralizer separately and get final product, can change separately equally after the centralizer wearing and tearing, need not adjust whole drilling tool according to drill bit or reamer diameter variation, easy to use flexible, increase work efficiency, save goods, materials and equipments, reduce processing and application cost; Especially the cylindrical ring body of centralizer holds flour milling with smooth surface as setting upright, and drives the centralizer of chute with the surface in original technology and compares, and encircles all whole surfaces and is to set upright and holds flour milling, crosses chute and is arranged on centralizer inside, and the whole effect of setting upright is improved; On the outer wall of cylindrical ring body wearing layer is set, can repairs after the wearing and tearing, increase the service life.
Description of drawings
Fig. 1 is a main TV structure schematic diagram of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is an application schematic diagram of the present utility model.
Among the figure: 1 helicoid hydraulic motor, the housing of 11 helicoid hydraulic motors, all boss of 12 rings, 2 centralizers, 21 cylindrical ring bodies, 22 interior torus, 23 disc, 24 cross chute, 25 wearing layers, 3 lock sleeves.
Below in conjunction with drawings and Examples the utility model is described in detail.
The specific embodiment
Fig. 1-Fig. 2 illustrates the mining centralizer for screwdrill of a kind of changeable type, it is characterized in that this centralizer 2 is that interior torus 22 and a plurality of disc 23 that flexibly connects by the smooth cylindrical ring body 21 of outer wall, with the housing 11 of helicoid hydraulic motor constitutes; The quantity of disc is 3-5, in this example, has adopted 3 disc.Above-mentioned cylindrical ring body 21 is placed in above-mentioned interior torus 22 outsides and is coaxially set with it, and interior torus two ends symmetry extends the outer toroid external body.In actual applications, the height of interior torus 22 is 180-220mm, and interior toric height is 1.4-3 a times of outer toroid height degree.Above-mentioned 3 disc 23 are disposed radially and are fixedly connected between interior torus and the cylindrical ring body around interior torus is uniform, like this, form 3 between torus and the interior torus outside and cross chute 24.Interior torus 22 inwalls at centralizer 2 are provided with connecting thread, are used for being threaded with the housing 11 of helicoid hydraulic motor.
Centralizer is the integral piece of whole processing, adopts alloy steel, and as chrome-moly steel, carbide alloy such as chromium nickel-molybdenum alloy steel are by casting technique or process for machining moulding.The wearing layer that thickness is 2-3mm is set on the outer wall of torus 21 outside.Wearing layer can adopt the surfacing wear-resistant alloy layer, as surfacing diamondite layer, or by using the inserted formation wearing layer of hard alloy columnar.
Fig. 3 illustrates the concrete application of the utility model in mining helicoid hydraulic motor, on the housing 11 of helicoid hydraulic motor with the corresponding screw thread that is provided with of screw thread of interior torus 22 inwalls, at thread head all boss 12 of ring are set, during use, centralizer 2 is sleeved on by being threaded on the housing 11 of helicoid hydraulic motor, the one end blocks the location by boss 12, is screwed into housing by lock sleeve 3 from its other end then it is locked.
During work, drive drill bit or reamer when hole in the depths, rock stratum at helicoid hydraulic motor, circulating mud and landwaste pass through from the chute 24 of crossing of centralizer 2 inside, cylindrical ring body 21 holds flour milling and reaches the better effect of setting upright as setting upright with smooth surface, can change separately after the centralizer wearing and tearing, flexible, save goods, materials and equipments, reduce processing and application cost.
Above content is not that structure of the present utility model, shape and material are done any pro forma restriction.Every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (6)
1. mining centralizer for screwdrill of changeable type, it is characterized in that it being that interior torus and a plurality of disc that flexibly connects by the smooth cylindrical ring body of outer wall, with the housing of helicoid hydraulic motor constitutes, described cylindrical ring body is placed in the described interior torus outside and is coaxially set with it, interior torus two ends symmetry extends the outer toroid external body, described a plurality of disc is disposed radially and is fixedly connected between interior torus and the cylindrical ring body around interior torus is uniform, forms a plurality of chutes of crossing outside between torus and the interior torus.
2. the mining centralizer for screwdrill of changeable type according to claim 1 is characterized in that being provided with the wearing layer that thickness is 2-3mm on the outer wall of described cylindrical ring body.
3. the mining centralizer for screwdrill of changeable type according to claim 1 is characterized in that this centralizer is an integral piece.
4. according to claim 1, the mining centralizer for screwdrill of 2 or 3 described changeable types, it is characterized in that described interior torus inwall is provided with connecting thread.
5. according to claim 1, the mining centralizer for screwdrill of 2 or 3 described changeable types, it is characterized in that described interior toric height is 180-220mm, interior toric height is 1.4-3 a times of outer toroid height degree.
6. according to claim 1, the mining centralizer for screwdrill of 2 or 3 described changeable types, the quantity that it is characterized in that described disc is 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200344877U CN201934033U (en) | 2011-02-01 | 2011-02-01 | Boring tool centralizer for replaceable mining screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200344877U CN201934033U (en) | 2011-02-01 | 2011-02-01 | Boring tool centralizer for replaceable mining screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934033U true CN201934033U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200344877U Expired - Fee Related CN201934033U (en) | 2011-02-01 | 2011-02-01 | Boring tool centralizer for replaceable mining screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041971A (en) * | 2011-02-01 | 2011-05-04 | 天津立林石油机械有限公司 | Replaceable mine screw drill centralizer |
| CN110029948A (en) * | 2019-06-03 | 2019-07-19 | 中铁隧道集团一处有限公司 | Drill bit erection device for long range horizontal drilling of constructing |
| CN114893141A (en) * | 2022-05-07 | 2022-08-12 | 江西东锐机械有限公司 | Material taking barrel device for down-the-hole drill |
-
2011
- 2011-02-01 CN CN2011200344877U patent/CN201934033U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041971A (en) * | 2011-02-01 | 2011-05-04 | 天津立林石油机械有限公司 | Replaceable mine screw drill centralizer |
| CN110029948A (en) * | 2019-06-03 | 2019-07-19 | 中铁隧道集团一处有限公司 | Drill bit erection device for long range horizontal drilling of constructing |
| CN114893141A (en) * | 2022-05-07 | 2022-08-12 | 江西东锐机械有限公司 | Material taking barrel device for down-the-hole drill |
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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: 20110817 Termination date: 20200201 |