CN204386493U - Joint screw thread between rotary drill drilling system - Google Patents
Joint screw thread between rotary drill drilling system Download PDFInfo
- Publication number
- CN204386493U CN204386493U CN201420744168.9U CN201420744168U CN204386493U CN 204386493 U CN204386493 U CN 204386493U CN 201420744168 U CN201420744168 U CN 201420744168U CN 204386493 U CN204386493 U CN 204386493U
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- screw thread
- thread
- joint screw
- drilling system
- rotary drill
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Abstract
The utility model relates to the joint screw thread between a kind of rotary drill drilling system, and emphasis solves the special tapered tread processing Problems existing made in Great Britain of existing slender axles drilling rod; Process this screw thread and be the lengthening horizontal lathe processing that band leans to die device, and need test with special thread ring, feeler gauge; And general numerically controlled lathe all can not be processed, thus bring certain difficulty to the processing of this screw thread, and user safeguard inconvenience.Joint screw thread between the rotary drill drilling system that the utility model relates to comprises internal and external screw thread, and described joint screw thread adopts cylinder single line rectangular thread to connect; Described joint screw thread only has large footpath and path not to have central diameter, is the rectangular concavo-convex straight line tooth of axial cross section thread form; The flank of described joint screw thread is that ganoid work screws slide plane; Described joint screw thread adopts the matched in clearance of path centering.Solve slender axles drilling rod processing bottleneck, and shorten the production cycle, reduce manufacturing cost, rectangle straight line thread form precision is easy to ensure.
Description
Technical field
The utility model relates to the nipple between a kind of rotary drill drilling system, and the joint screw thread be mainly used between rotary drill drilling system connects, and the joint screw thread that also can be used on rock drilling machinery between drilling system connects.
Background technology
As shown in Figure 1, between the drilling system that the rotary drill in the existing mine of China uses, joint screw thread is special tapered tread made in Great Britain, this drilling system in working order under be followed successively by the quill shaft of rotary machinery, damper, drilling rod group, virtual calibrator for instrument transformer and drill bit composition from top to bottom, being coupled to each other between them is special tapered tread made in Great Britain, that is, the one end be coupled to each other between them is special conical inner screw thread made in Great Britain or external screw thread; Process this screw thread need process by the horizontal lathe with leaning to die device, and carry out processing and checking with special thread ring, feeler gauge etc.And general numerical-control horizontal lathe all can not process this screw thread, thus bring certain difficulty, the particularly processing of the special tapered tread made in Great Britain of slender axles drilling rod to the processing of this screw thread; Thus bring inconvenience to user's maintenance, and add maintenance and spare parts cost.
Summary of the invention
The purpose of this utility model is that providing a kind of has equal linking intensity with special tapered tread made in Great Britain, and the joint screw thread between the rotary drill drilling system of maintenance, long service life is checked conveniently, is convenient to the simple in-process measurement of structure; Propose a kind of tapered tread special made in Great Britain by joint between drilling system to connect, adopt a kind of new cylinder single line rectangular thread to connect form.
Joint screw thread between the rotary drill drilling system that technical solutions of the utility model relate to comprises inside and outside cylindrical thread, and described screw thread adopts cylinder single line rectangular thread, and single thread self-locking property is good; Described cylindrical thread rises to winding screw along cylinder axis by a constant pitch, the concavo-convex straight line tooth that axial cross section thread form is rectangular; The flank of described screw thread is that ganoid work screws slide plane; Described joint screw thread only has large footpath and path not to have central diameter; Described joint screw thread comprises dental groove well width, thick, the large footpath of crest, path, thread depth H, described joint screw thread path is that large footpath deducts two thread depths, for ensureing that this screw thread is threaded into smooth and easy and inlet screw intensity when rotary drill drilling tool extension bar, screw thread arrival end is provided with and is threaded into pilot angle β, be threaded into pilot angle β length C and equal 0.25 times of pitch P, technique withdrawing length; The thick F of crest of described internal thread and the dental groove well width W of the thick f of described externally threaded crest and described internal thread and described externally threaded dental groove well width w is 0.5 times of pitch P, described thread depth H span is between (0.25 ~ 0.5) times pitch P, cooperation between the internal thread of described joint screw thread and external screw thread, the matched in clearance of large footpath or path centering can be adopted, the dental groove groove of described internal thread and thick thick with described externally threaded crest in the dental groove groove respectively of crest screw mutually, closely linked, screw all linked with one anotherly, and engage securely.
The further technical scheme of the utility model is: described in be threaded into the span of pilot angle β between (30 ° ~ 60 °).
The utility model further technical scheme is: described in be threaded into pilot angle β and be preferably 45 °.
The further technical scheme of the utility model is: the dental groove well width W of described internal thread and described externally threaded dental groove well width w, suitable dental groove well width tolerance value can form certain running clearance, running clearance ensures that rotary drill drilling tool is smooth and easy at threaded engagement in bar process of unloading, engage securely during work, it allows manufacturing tolerance between+0.05 ~+0.1, and unit is millimeter.
The further technical scheme of the utility model is: the thread depth H of described joint screw thread is preferably 0.25 times of pitch P, larger to joint screw thread height between drilling system to solve like this, to the dissection of drilling system material body, reduce " cut wound " larger to drilling system bulk material, improve the wall thickness of screw thread connection strength and minimizing material, reduce costs; The tolerance value of suitable thread depth can form certain tooth top gap with storing lubricating grease and accommodation dust, and to improve the operating efficiency of drilling tool and to reduce thread abrasion, it allows manufacturing tolerance between+0.2 ~+0.3, and unit is millimeter.
The further technical scheme of the utility model is: the cooperation between the internal thread of described joint screw thread and external screw thread, is preferably the matched in clearance of path centering, and its cooperation can be optionally one of following, H7/f7, H7/g6, H8/f7, H8/g6, H8/h7.
The utility model further technical scheme is: the matched in clearance of described path centering, is preferably H7/f7.
The beneficial effects of the utility model are: because this rectangular thread straight line thread form is simple and easy to obtain degree of precision and interchangeability, in-process measurement inspection is convenient, long service life, after rotary drill drilling tool uses a period of time, screw thread has wearing and tearing in various degree, distortion, utilizes general horizontal lathe just can process it or repair; Solve special tapered tread processing bottleneck made in Great Britain, and shorten the production cycle, reduce and manufacture and maintenance cost.
Accompanying drawing explanation
Between Fig. 1 prior art drilling system, special tapered tread made in Great Britain connects schematic diagram
Between Fig. 2 drilling system of the present utility model, cylinder single line rectangular thread connects schematic diagram
Cylinder single line rectangle internal thread schematic diagram between Fig. 3 drilling system of the present utility model
Cylinder single line rectangle external screw thread schematic diagram between Fig. 4 drilling system of the present utility model
Detailed description of the invention
As shown in Figure 2, cylinder single line rectangular thread of the present utility model comprises cylinder single line rectangle internal thread 1 and cylinder single line rectangle external screw thread 2, and described screw thread adopts cylinder single line rectangular thread, and single thread self-locking property is good; Described cylindrical thread rises to winding screw along cylinder axis by a constant pitch, the concavo-convex straight line tooth that axial cross section thread form is rectangular; The flank of described screw thread is that ganoid work screws slide plane; Described joint screw thread only has large footpath and path not to have central diameter, the dental groove groove W of described cylinder single line rectangle the internal thread 1 and thick F of crest screws mutually with the thick f of crest of described cylinder single line rectangle external screw thread 2 and dental groove groove w respectively, closely linked, all linked with one another, and firmly screw.
As shown in Figure 3, described cylinder single line rectangle internal thread 1, comprise dental groove well width W, the thick F of crest, large footpath D, path d, thread depth H, described path d is that large footpath D deducts two thread depth H, for ensureing that this screw thread is threaded into smooth and easy and inlet screw intensity when rotary drill drilling tool extension bar, screw thread arrival end is provided with and is threaded into pilot angle β, described in be threaded into pilot angle β length C and equal 0.25 times of pitch P, technique withdrawing length E.
As shown in Figure 4, described cylinder single line rectangle external screw thread 2, comprise dental groove well width w, the thick f of crest, large footpath D, path d, thread depth H, described path d is that large footpath D deducts two thread depth H, smooth and easy for ensureing that this screw thread is threaded into when rotary drill drilling tool extension bar, screw thread arrival end is provided with and is threaded into pilot angle β, the described pilot angle β length C that is threaded into equals 0.25 times of pitch P, technique withdrawing length e, cooperation between the internal thread 1 of described joint screw thread and external screw thread 2, can adopt the matched in clearance that large footpath D or path d feels relieved.
The dental groove well width W of the thick F of crest of described internal thread 1 and the thick f of crest of described external screw thread 2 and described the internal thread 1 and dental groove well width w of described external screw thread 2 is 0.5 times of pitch P, suitable dental groove well width tolerance value can form certain running clearance, running clearance ensures that rotary drill drilling tool is smooth and easy at threaded engagement in bar process of unloading, and engages securely during work.
Described thread depth H span is between (0.25 ~ 0.5) times pitch P, be preferably 0.25 times of pitch P, larger to joint screw thread height H between drilling system to solve like this, to the dissection of drilling system material body, reduce " cut wound " larger to drilling system bulk material, improve the wall thickness of screw thread connection strength and minimizing material, reduce costs; The tolerance value of suitable thread depth can form certain tooth top gap with storing lubricating grease and accommodation dust, to improve the operating efficiency of drilling tool and to reduce thread abrasion.
Further technical scheme is: described in be threaded into the span of pilot angle β between (30 ° ~ 60 °).
Further technical scheme is: described in be threaded into pilot angle β and be preferably 45 °.
Further technical scheme is: the dental groove well width W of described the internal thread 1 and dental groove well width w of external screw thread 2, and it allows manufacturing tolerance between+0.05 ~+0.1, and unit is millimeter.
Further technical scheme is: described thread depth H, and it allows manufacturing tolerance between+0.2 ~+0.3, and unit is millimeter.
Further technical scheme is: the cooperation between the internal thread 1 of described joint screw thread and described external screw thread 2, is preferably the matched in clearance that path d feels relieved, and its cooperation can be optionally one of following, H7/f7, H7/g6, H8/f7, H8/g6, H8/h7.
Further technical scheme is: the matched in clearance that described path d feels relieved, and is preferably H7/f7.
Claims (7)
1. the joint screw thread between rotary drill drilling system, comprises described joint screw thread and adopts cylinder single line rectangle internal thread (1) to connect with cylinder single line rectangle external screw thread (2); Described cylinder single line rectangle internal thread (1), comprises dental groove well width W, the thick F of crest, large footpath D, path d, thread depth H, technique withdrawing length E; Described cylinder single line rectangle external screw thread (2), comprises dental groove well width w, the thick f of crest, large footpath D, path d, thread depth H, technique withdrawing length e; The dental groove groove W of described internal thread (1) and the thick F of crest screws mutually with the thick f of crest of described external screw thread (2) and dental groove groove w respectively, closely linked, all linked with one another, and firmly screws; Path d is that large footpath D deducts two thread depth H, and described joint screw thread only has large footpath D and path d not have central diameter; It is characterized in that the screw thread arrival end of described joint screw thread is provided with and be threaded into pilot angle β, described in be threaded into pilot angle β length C and equal 0.25 times of pitch P; The dental groove well width W of the thick F of crest of described internal thread (1) and the thick f of crest of described external screw thread (2) and described internal thread (1) and the dental groove well width w of described external screw thread (2) is 0.5 times of pitch P, described thread depth H span is between 0.25 ~ 0.5 times of pitch P, cooperation between the internal thread (1) of described joint screw thread and external screw thread (2), can adopt the matched in clearance that large footpath D or path d feels relieved.
2. the joint screw thread between rotary drill drilling system according to claim 1, is threaded into the span of pilot angle β between 30 ° ~ 60 ° described in it is characterized in that.
3. the joint screw thread between rotary drill drilling system according to claim 2, is threaded into pilot angle β and is preferably 45 ° described in it is characterized in that.
4. the joint screw thread between rotary drill drilling system according to claim 1, it is characterized in that the permission manufacturing tolerance of the dental groove well width W of described internal thread (1) and the dental groove well width w of described external screw thread (2) is between+0.05 ~+0.1, unit is millimeter.
5. the joint screw thread between rotary drill drilling system according to claim 1, is characterized in that described thread depth H, is preferably 0.25 times of pitch P, and it allows manufacturing tolerance between+0.2 ~+0.3, and unit is millimeter.
6. the joint screw thread between rotary drill drilling system according to claim 1, it is characterized in that the cooperation between the internal thread (1) of described joint screw thread and external screw thread (2), be preferably the matched in clearance that path d feels relieved, its cooperation can be optionally one of following, H7/f7, H7/g6, H8/f7, H8/g6, H8/h7.
7. the joint screw thread between rotary drill drilling system according to claim 6, it is characterized in that the matched in clearance that the cooperation between the internal thread (1) of described joint screw thread and external screw thread (2) adopts path d to feel relieved, it coordinates preferably H7/f7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744168.9U CN204386493U (en) | 2014-12-02 | 2014-12-02 | Joint screw thread between rotary drill drilling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744168.9U CN204386493U (en) | 2014-12-02 | 2014-12-02 | Joint screw thread between rotary drill drilling system |
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| Publication Number | Publication Date |
|---|---|
| CN204386493U true CN204386493U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420744168.9U Active CN204386493U (en) | 2014-12-02 | 2014-12-02 | Joint screw thread between rotary drill drilling system |
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| CN (1) | CN204386493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715215A (en) * | 2014-12-02 | 2016-06-29 | 中钢集团衡阳重机有限公司 | Connection thread between drilling tool systems of blasthole drill |
-
2014
- 2014-12-02 CN CN201420744168.9U patent/CN204386493U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715215A (en) * | 2014-12-02 | 2016-06-29 | 中钢集团衡阳重机有限公司 | Connection thread between drilling tool systems of blasthole drill |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180626 Address after: No. 1, Dongfeng Road, Zhu Hui District, Hengyang, Hunan Patentee after: China Steel Group Hengyang Machinery Co., Ltd. Address before: No. 1, Dongfeng Road, Zhu Hui District, Hengyang, Hunan Patentee before: Sinosteel Hengyang Machinery Co., Ltd. |