CN202970516U - Rotary drilling rig drill stem and rotary drilling rig - Google Patents
Rotary drilling rig drill stem and rotary drilling rig Download PDFInfo
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- CN202970516U CN202970516U CN 201220730577 CN201220730577U CN202970516U CN 202970516 U CN202970516 U CN 202970516U CN 201220730577 CN201220730577 CN 201220730577 CN 201220730577 U CN201220730577 U CN 201220730577U CN 202970516 U CN202970516 U CN 202970516U
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- section rod
- drilling rig
- rotary drilling
- rod tube
- external key
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Abstract
The utility model discloses a rotary drilling rid drill stem and a rotary drilling rig. The drill stem comprises an inner rod (1) and a section rod pipe (2) sleeved on the inner rod (1), a plurality of inner keys (3) are arranged on the inner wall of the section rod pipe (2), inner key grooves (5) are formed between two adjacent inner keys (3), and a plurality of outer key groups (4) are arranged on the outer wall of the inner rod (1) and the outer wall of the section rod pipe (2). Each outer key group comprises outer keys (4a), and one outer key (4a) is provided with a compression portion (6). The inner keys (3) and the outer key groups (4) are alternatively arranged in the peripheral direction of the section rod pipe (2), and a plurality of inner keys (3) on at least one layer of the section rod pipe (2) and a plurality of outer key groups (4) on at least one layer of the section rod pipe are sealed in the peripheral direction of the section rod pipe (2). The weak area of the section rod pipe can be enhanced through the inner keys and the outer key group so as to greatly improve structural rigidity of the bottom of the section rod pipe.
Description
Technical field
The utility model relates to the rotary drilling rig field, particularly, relates to a kind of drilling rod for rotary drilling rig and comprises the rotary drilling rig of this drilling rod.
Background technology
Along with the rapid raising of China's rotary drilling rig industry market cognition degree, the geology construction beginning that the hard formations such as Guizhou, Guangxi, Chongqing distribute more progressively uses rotary drilling rig.Due to the special geologic structure in these zones, adopt large-scale rotary drilling rig construction more.In this case, traditional drilling rod exposes gradually structural stress and concentrates and to cause lower pipe cracking, add the shortcomings such as the serious wear of presenting a theatrical performance as the last item on a programme, drilling rod insufficient rigidity and spring frequent failure in work progress.
Fig. 1 to Fig. 5 is the view that tradition is used for the drilling rod of rotary drilling rig.As extremely shown in Figure 5 in Fig. 1, the drilling rod that tradition is used for rotary drilling rig comprises interior bar 1 and is set in the multilayer section rod tube 2 on bar 1 in this, wherein: interior bar 1 comprises the body of rod, the upper end of this body of rod is provided with elevator connector 14, the lower end of this body of rod is connected with buffer spring 11, and the lower end of this buffer spring 11 is connected with drilling tool connector 10; Section rod tube 2 comprises body and is separately positioned on actuating sleeve and the positioning sleeve at this body two ends, be provided with a plurality of internal keies 3 on the inwall of the actuating sleeve of section rod tube 2, be formed with internal keyway 5 between two adjacent described internal keies 3, be provided with a plurality of external key bars 13 on the body of section rod tube 2 and actuating sleeve outer wall, also be provided with a plurality of external key bars 13 on the outer wall of interior bar 1, the internal keyway 5 that arranges on the inwall of the external key bar 13 on interior bar 1 and the external key bar 13 on internal layer section rod tube 2 and outer section rod tube 2 coordinates, external key bar 13 indentations wherein, and every external key bar 13 is monolithic.
There is following defective in the drilling rod that tradition is used for rotary drilling rig: 1) as shown in Figure 4, need to be welded on due to external key bar 13 on the outer wall of actuating sleeve of section rod tube 2, so the heat affected zone of weld seam is at position A punishment cloth, reduced the mechanical performance of A place, this position material, and a little less than the physical dimension relative thin at A place, position itself, therefore easily form region of stress concentration at A place, position.In addition, in the use procedure of drilling rod, this position A is frequently turned round, and unloads in the process of soil at rotary drilling rig simultaneously, and unit head has rotating to get rid of the soil action, and the impact that causes this position A to be subject to is the most violent.For above-mentioned reasons, conventional drill in use frequently ftractures at A place, position, thereby has had a strong impact on construction speed.2) because traditional external key bar 13 is monolithic, so be subjected to the restriction of processing technology, the width of traditional external key bar 13 is narrower, be about 100mm, as shown in Figure 5, the width dimensions L1 of the fore shaft that wherein pressurizes is about 60mm, and the key bar width dimensions L2 of torsion pass position is about 40mm.In the course of work of drilling rod, external key bar 13 not only will be subject to the moment of torsion of unit head, and also to be subject to unit head to the axial pressure power of drilling rod in pressurization fore shaft position, enter the raising of rock hardness degree and the degree of depth along with rotary drilling rig, above-mentioned size displays less than normal gradually, causes drilling rod to add flattening bench and external key serious wear.3) in the pressure process of conventional drill, the plus-pressure of unit head transmits layer by layer via the pressurization platform of outermost layer section rod tube 2, finally is delivered to drilling tool connector 10 through buffer spring 11, then passes to drilling tool by drilling tool connector 10 and construct.Because buffer spring 11 does not have structural defence, so in continuous compression and drawing process, buffer spring 11 easily lost efficacy because of tired.
The utility model content
The purpose of this utility model is to provide a kind of drilling rod that is used for rotary drilling rig of the rigidity of structure that can increase section rod tube bottom and comprises the rotary drilling rig of this drilling rod.
to achieve these goals, the utility model provides a kind of drilling rod for rotary drilling rig, this drilling rod comprises interior bar and is set in the section rod tube on bar in this, be provided with a plurality of internal keies on the inwall of described section rod tube, be formed with internal keyway between two adjacent described internal keies, wherein, be provided with a plurality of external key groups on the outer wall of described interior bar and on the outer wall of described section rod tube, described external key group comprises external key, one of them described external key is provided with pressures partially, described internal key and described external key group are alternately arranged on the circumferential direction of described section rod tube, at least a plurality of described internal key on the described section rod tube of one deck and a plurality of described external key group are sealed on the circumferential direction of described section rod tube.
Preferably, described section rod tube be two-layer more than, external key group on described interior bar coordinates with internal keyway on being positioned at the described bar outside and the described section rod tube adjacent with described bar, the external key group on the described section rod tube of internal layer be positioned at this internal layer section rod tube outside and internal keyway on the outer described section rod tube adjacent with this internal layer section rod tube coordinate.
Preferably, a plurality of described internal key and a plurality of described external key group interlaced arrangement on the described section rod tube of one deck at least.
Preferably, described external key is a plurality of, and these a plurality of external keys are spaced from each other on the circumferential direction of described section rod tube, is connected with stiffening plate between two adjacent described external keys.
Preferably, described stiffening plate is fixedly connected with described pressures partially.
Preferably, described pressures partially comprises torsion pass key, upper collet and lower locking plate, described torsion pass key extends along the length direction of described section rod tube, described upper collet is spaced from each other on described torsion pass key length direction and is fixedly connected with described torsion pass key with lower locking plate, be formed with the pressurization fore shaft between described upper collet and described lower locking plate, and described pressures partially and described one of them external key interconnect.
Preferably, the bottom of described section rod tube is connected with wear-resistant sleeve.
Preferably, this drilling rod also comprises for the buffering that matches with the buffering platen of the unit head of described rotary drilling rig and supporting, and this buffering support comprises rubber ring and is connected to two metal sheets on two end faces of this rubber ring.
Preferably, the lower end of the body of rod of described interior bar is provided with the flowing water dish, is provided with weep hole on this flowing water dish.
Preferably, described interior bar has the drilling tool connector, and the top of this drilling tool connector is provided with baffle plate, is connected with buffer spring between described flowing water dish and described baffle plate, and the inside of this buffer spring is provided with stop collar, and this stop collar is fixed on described baffle plate.
In addition, the utility model also provides a kind of rotary drilling rig, and this rotary drilling rig comprises drilling rod, and wherein, described drilling rod is the drilling rod for rotary drilling rig provided by the utility model.
The drilling rod that is used for rotary drilling rig that provides according to the utility model, because a plurality of described internal key on described section rod tube and a plurality of described external key group are sealed on the circumferential direction of described section rod tube, so can strengthen the weakness zone on section rod tube by internal key and external key group, thereby greatly increased the rigidity of structure of section rod tube bottom, prevent from ftractureing bottom section rod tube, thereby guarantee construction speed.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of manual, is used from explanation the utility model with the following specific embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation that tradition is used for the drilling rod of rotary drilling rig;
Fig. 2 is the viewgraph of cross-section that tradition is used for the drilling rod of rotary drilling rig;
Fig. 3 is that tradition is for the topology view of the internal keyway of the drilling rod of rotary drilling rig;
Fig. 4 is that tradition is for the partial enlarged view of the viewgraph of cross-section of the drilling rod of rotary drilling rig;
Fig. 5 is the view of the pressurization fore shaft position of the tradition drilling rod that is used for rotary drilling rig;
Fig. 6 is the structural representation of the drilling rod that is used for rotary drilling rig that provides of the utility model;
Fig. 7 is the viewgraph of cross-section of the drilling rod that is used for rotary drilling rig that provides of the utility model;
Fig. 8 is the topology view of the internal keyway of the drilling rod that is used for rotary drilling rig that provides of the utility model;
Fig. 9 is the partial enlarged view of the viewgraph of cross-section of the drilling rod that is used for rotary drilling rig that provides of the utility model;
Figure 10 is the structural representation of the pressures partially of the drilling rod that is used for rotary drilling rig that provides of the utility model;
Figure 11 is the view of the pressurization fore shaft position of the drilling rod that is used for rotary drilling rig that provides of the utility model;
Figure 12 is the structural representation that the buffering of the drilling rod that is used for rotary drilling rig that provides of the utility model supports.
Description of reference numerals
1: interior bar 2: section rod tube
3: internal key 4: the external key group
4a: external key 4b: stiffening plate
5: internal keyway 6: pressures partially
6a: torsion pass key 6b: upper collet
6c: lower locking plate 6d: pressurization fore shaft
7: buffering supports 7a: rubber ring
7b: metal sheet 8: wear-resistant sleeve
9: flowing water dish 9a: weep hole
10: drilling tool connector 10a: baffle plate
11: buffer spring 12: stop collar
13: external key bar 14: the elevator connector
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, in the situation that do opposite explanation, the noun of locality of use is that the duty of the drilling rod that is used for rotary drilling rig that provides at the utility model is undefined as " upper and lower ".
as extremely shown in Figure 9 in Fig. 6, the utility model provides a kind of drilling rod for rotary drilling rig, this drilling rod comprises interior bar 1 and is set in the section rod tube 2 on bar 1 in this, be provided with a plurality of internal keies 3 on the inwall of described section rod tube 2, be formed with internal keyway 5 between two adjacent described internal keies 3, wherein, be provided with a plurality of external key groups 4 on the outer wall of described interior bar 1 and on the outer wall of described section rod tube 2, described external key group 4 comprises external key 4a, one of them described external key 4a is provided with pressures partially 6, described internal key 3 is alternately arranged on the circumferential direction of described section rod tube 2 with described external key group 4, at least a plurality of described internal key 3 on the described section rod tube 2 of one deck and a plurality of described external key group 4 are sealed on the circumferential direction of described section rod tube 2, that is to say, a plurality of described internal keies 3 and a plurality of described external key group 4 form the lines of sealing along the projection of radial direction on this section rod tube 2 of section rod tube 2.
The drilling rod that is used for rotary drilling rig that provides according to the utility model, because a plurality of described internal key 3 on described section rod tube 2 and a plurality of described external key group 4 are sealed on the circumferential direction of described section rod tube 2, so can strengthen by the weakness zone (being the weld heat-affected zone of external key group 4 and internal key 3 intersections) at internal key 3 and A place, 4 pairs of positions of external key group, thereby greatly increased the rigidity of structure of section rod tube bottom, prevent drilling rod in use at A place, position cracking, thereby guarantee construction speed.
The number of plies of section rod tube 2 is selected according to specific needs.For example, section rod tube 2 can for one deck or two-layer more than.Generally, the external key group 4 on described interior bar 1 coordinates with internal keyway 5 on being positioned at described bar 1 outside and the described section rod tube 2 adjacent with described bar 1.In the situation that section rod tube 2 is two-layer above, the external key group 4 on the described section rod tube 2 of internal layer coordinates with internal keyway 5 on being positioned at these internal layer section rod tube 2 outsides and the outer described section rod tube 2 adjacent with this internal layer section rod tube 2.In addition, the external key group on outermost section rod tube 24 is used for coordinating with the unit head of rotary drilling rig.
To embodiment shown in Figure 9, have three layers of section rod tube 2 at Fig. 6.Under preferable case, internal key 3 and external key group 4 on the section rod tube 2 of all layers are sealed on the circumferential direction of section rod tube 2.But, sometimes be subjected to the topology layout restriction possibly can't reach above-mentioned preferable case, for example, in embodiment shown in Figure 7, number only has internal key 3 and external key group 4 on second layer section rod tube 2 and the 3rd layer of section rod tube 2 to realize sealing from inside to outside, and the internal key 3 on first floor section rod tube 2 and external key group 4 realize sealing.
Further preferably, a plurality of described internal key 3 on the described section rod tube 2 of one deck and a plurality of described external key group 4 interlaced arrangement at least, namely the internal key 3 on section rod tube 2 and external key group 4 exist and overlap, thereby further the weakness zone on section rod tube 2 are strengthened.
The axial pressure power of bearing due to pressures partially 6 is larger, so under preferable case, described stiffening plate 4b is fixedly connected with described pressures partially 6, that is to say, by stiffening plate 4b, pressures partially 6 is strengthened, thereby solved in the problem that adds the frequent cracking of flattening bench place's section rod tube body.
The number of pressures partially 6 can be selected according to specific needs, for example a 1-6 pressures partially 6 can be set along the length direction of external key group 4.
Pressures partially 6 can take various suitable modes to form.As shown in Figure 10 and Figure 11, preferably, described pressures partially 6 comprises torsion pass key 6a, upper collet 6b and lower locking plate 6c, described torsion pass key 6a extends along the length direction of described section rod tube 2, described upper collet 6b is spaced from each other on the length direction of described torsion pass key 6a with lower locking plate 6c and is fixedly connected with described torsion pass key 6a, be formed with pressurization fore shaft 6d between described upper collet 6b and described lower locking plate 6c, and described pressures partially 6 interconnects with described one of them external key 4a.Upper collet 6b for example can be fixedly connected with described torsion pass key 6a by the mode of welding with lower locking plate 6c, and pressures partially 6 for example can interconnect by mode and described one of them external key 4a of welding.In above-mentioned preferred embodiment, pressures partially 6 is formed respectively independent structure with external key 4a, and then these two independent structures are interconnected to an integral body, can facilitate the processing of external key like this, obtain pressurization fore shaft and the torsion pass key of desired width, the width dimensions L1 of fore shaft of for example pressurizeing can be 80mm-150mm according to the size of body external diameter, the width dimensions L2 of torsion pass key also can select between 40mm-100mm, thereby improved the torsional property of external key, and alleviated the wearing and tearing that drilling rod adds flattening bench and external key.In addition, upper collet 6b, lower locking plate 6c and torsion pass key 6a can adopt high-strength steel to form through special thermal treatment, to strengthen the wear-resisting and anti-fatigue performance of pressures partially 6.
In addition, as shown in Figure 8, preferably, the bottom of described section rod tube 2 is connected with wear-resistant sleeve 8.Wear-resistant sleeve 8 can adopt high-strength steel to forge, modulate and form, thereby has increased the abrasion resistance of body bottom, the application life of having improved drilling rod.Wear-resistant sleeve 8 can be connected with the bottom of section rod tube 2 by the mode of for example welding.
Generally, the drilling rod that the utility model provides also comprises for the buffering that matches with the buffering platen of the unit head of described rotary drilling rig and supports 7, as shown in figure 12, preferably, this buffering supports 7 and comprises rubber ring 7a and be connected to two metal sheet 7b on two end faces of this rubber ring 7a.Like this, in the time of can greatly reducing the drilling rod release by two metal sheet 7b, unit head buffering platen and buffering support the frictional resistance between 7, thereby reduce the resistance between unit head buffering platen and drilling rod.Rubber ring 7a is connected with the mode that metal sheet 7b adopts glue to connect usually.Metal sheet 7b can be for example steel plate.As selection, buffering supports 7 and also can be formed by a plurality of dish spring series, parallel or connection in series-parallel; Perhaps formed by the one-piece auger spring; Perhaps formed by a plurality of helical spring series, parallel or connection in series-parallel; Perhaps formed by a plurality of rubber spring series, parallel or connection in series-parallel.
Preferably, the lower end of the body of rod of described interior bar 1 is provided with flowing water dish 9, is provided with weep hole 9a on this flowing water dish 9.Like this, when drilling rod shrinks, in being driven via elevator and elevator connector 14 by rotary drilling rig master winch wire rope, bar 1 moves upward, flowing water dish 9 drags one by one each layer section rod tube 2 and moves upward, make section rod tube 2 shrink layer by layer, when rotary drilling rig carried out the water hole operation, the sewage in section rod tube 2 was just discharged via the weep hole 9a of flowing water dish 9, thus can facilitate when drilling rod proposes the workman closely to drilling rod open the door, the more operation such as bit change.Flowing water dish 9 can be connected with the lower end of the body of rod of interior bar 1 by the mode of for example welding.In addition, the quantity of weep hole 9a and size are selected according to specific needs.
Generally, described interior bar 1 has drilling tool connector 10, and the top of this drilling tool connector 10 is provided with baffle plate 10a, is connected with buffer spring 11 between described flowing water dish 9 and described baffle plate 10a.Preferably, the inside of buffer spring 11 is provided with stop collar 12, and this stop collar 12 is fixed on described baffle plate 10a.In the course of work of rotary drilling rig, the plus-pressure of rotary drilling rig is passed to the flattening bench that adds of every one deck section rod tube 2 by unit head, then be passed to flowing water dish 9, buffer spring 11, stop collar 12 and the drilling tool connector 10 of interior bar 1, then pass to drilling tool by drilling tool connector 10 and construct.In above-mentioned stressed transmittance process, flowing water dish 9 just contacted with stop collar 12 before buffer spring 11 compression decrements allowable, thereby buffer spring 11 is played effective protection, prevented that buffer spring 11 lost efficacy because of tired.Baffle plate 10a can be connected with the top of drilling tool connector 10 by the mode of for example welding.Buffer spring 11 can be connected with baffle plate 10a with flowing water dish 9 by the mode of for example welding.Stop collar 12 can be fixed on baffle plate 10a by the mode of for example welding.Buffer spring 11 is used for absorbing drilling rod vibrations in the course of the work, thereby drilling rod and rotary drilling rig are played a protective role.Preferably, buffer spring 11 is the one-piece auger spring structure.As selection, buffer spring 11 also can be formed by a plurality of dish spring series, parallel or connection in series-parallel; Perhaps formed by a plurality of rubber spring series, parallel or connection in series-parallel; Perhaps formed by a plurality of helical spring series, parallel or connection in series-parallel.When buffer spring 11 adopted rubber spring due to design requirement, buffer spring 11 was in series by a plurality of rubber springs, and the top and bottom of each rubber spring adopt steel plate glue to connect.During the conventional drill torsion pass, between rubber spring and rubber spring, frictional force is very large, and rubber spring easily is out of shape, lost efficacy.After adopting two-sided steel plate structure, during the drilling rod torsion pass, the frictional force between rubber spring and rubber spring is converted into the frictional force between steel plate and steel plate, has greatly improved the application life of rubber spring.In addition, drilling tool connector 10 preferred whole with the high-strength steel steel ingot through forge, modifier treatment forms, and drilling tool connector 10 is preferably the welding box body structure.
The structure of the other parts of described interior bar 1 and section rod tube 2 is conventionally known to one of skill in the art, does not repeat them here.
The drilling rod that is used for rotary drilling rig that the utility model provides can be machine locking-type drilling rod.The part-structure of the drilling rod that is used for rotary drilling rig that in addition, the utility model provides also goes for friction type drill rod.
In addition, the utility model also provides a kind of rotary drilling rig, and this rotary drilling rig comprises drilling rod, and wherein, described drilling rod is the drilling rod for rotary drilling rig provided by the utility model.
The drilling rod that is used for rotary drilling rig that the utility model specific embodiment provides possesses following advantage:
1) seal on the circumferential direction of described section rod tube 2 due to a plurality of described internal key 3 on described section rod tube 2 and a plurality of described external key group 4, so can strengthen by the weakness zone at internal key 3 and A place, 4 pairs of positions of external key group, prevent drilling rod in use at A place, position cracking, thereby guarantee construction speed;
2) by pressures partially 6 is formed respectively independent structure with external key 4a, and then these two independent structures are interconnected to an integral body, can facilitate the processing of external key, obtain pressurization fore shaft and the torsion pass key of desired width, thereby improved the torsional property of external key, and alleviated the wearing and tearing that drilling rod adds flattening bench and external key;
3) in the stressed transmittance process of rotary drilling rig, flowing water dish 9 just contacted with stop collar 12 before buffer spring 11 compression decrements allowable, thereby buffer spring 11 is played effective protection, prevented that buffer spring 11 lost efficacy because of tired.
Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible combinations.
In addition, also can carry out any combination between various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (11)
1. drilling rod that is used for rotary drilling rig, this drilling rod comprises interior bar (1) and is set in the section rod tube (2) on bar (1) in this, be provided with a plurality of internal keies (3) on the inwall of described section rod tube (2), be formed with internal keyway (5) between adjacent two described internal keies (3), it is characterized in that, be provided with a plurality of external key groups (4) on the outer wall of described interior bar (1) and on the outer wall of described section rod tube (2), described external key group (4) comprises external key (4a), one of them described external key (4a) is provided with pressures partially (6), described internal key (3) is alternately arranged on the circumferential direction of described section rod tube (2) with described external key group (4), at least a plurality of described internal key (3) on the described section rod tube of one deck (2) and a plurality of described external key groups (4) are sealed on the circumferential direction of described section rod tube (2).
2. the drilling rod for rotary drilling rig according to claim 1, it is characterized in that, described section rod tube (2) be two-layer more than, external key group (4) on described interior bar (1) coordinates with internal keyway (5) on being positioned at described bar (1) outside and the described section rod tube (2) adjacent with described bar (1), the external key group (4) on the described section rod tube of internal layer (2) be positioned at this internal layer section rod tube (2) outside and internal keyway (5) on the outer described section rod tube (2) adjacent with this internal layer section rod tube (2) coordinate.
3. the drilling rod for rotary drilling rig according to claim 1, is characterized in that, at least a plurality of described internal key (3) on the described section rod tube of one deck (2) and a plurality of described external key groups (4) interlaced arrangement.
4. the drilling rod for rotary drilling rig according to claim 1, it is characterized in that, described external key (4a) is a plurality of, and these a plurality of external keys (4a) are spaced from each other on the circumferential direction of described section rod tube (2), is connected with stiffening plate (4b) between adjacent two described external keys (4a).
5. the drilling rod for rotary drilling rig according to claim 4, is characterized in that, described stiffening plate (4b) is fixedly connected with described pressures partially (6).
6. the drilling rod for rotary drilling rig according to claim 1, it is characterized in that, described pressures partially (6) comprises torsion pass key (6a), upper collet (6b) and lower locking plate (6c), described torsion pass key (6a) extends along the length direction of described section rod tube (2), described upper collet (6b) is spaced from each other on the length direction of described torsion pass key (6a) with lower locking plate (6c) and is fixedly connected with described torsion pass key (6a), be formed with pressurization fore shaft (6d) between described upper collet (6b) and described lower locking plate (6c), and described pressures partially (6) interconnects with described one of them external key (4a).
7. the drilling rod for rotary drilling rig according to claim 1, is characterized in that, the bottom of described section rod tube (2) is connected with wear-resistant sleeve (8).
8. the drilling rod for rotary drilling rig according to claim 1, it is characterized in that, this drilling rod also comprises for the buffering that matches with the buffering platen of the unit head of described rotary drilling rig and supports (7), and this buffering support (7) comprises rubber ring (7a) and is connected to two metal sheets (7b) on two end faces of this rubber ring (7a).
9. the drilling rod for rotary drilling rig according to claim 1, is characterized in that, the lower end of the body of rod of described interior bar (1) is provided with flowing water dish (9), is provided with weep hole (9a) on this flowing water dish (9).
10. the drilling rod for rotary drilling rig according to claim 9, it is characterized in that, described interior bar (1) has drilling tool connector (10), the top of this drilling tool connector (10) is provided with baffle plate (10a), be connected with buffer spring (11) between described flowing water dish (9) and described baffle plate (10a), the inside of this buffer spring (11) is provided with stop collar (12), and this stop collar (12) is fixed on described baffle plate (10a).
11. a rotary drilling rig, this rotary drilling rig comprises drilling rod, it is characterized in that, described drilling rod is drilling rod for rotary drilling rig described according to any one claim in the claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730577 CN202970516U (en) | 2012-12-26 | 2012-12-26 | Rotary drilling rig drill stem and rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220730577 CN202970516U (en) | 2012-12-26 | 2012-12-26 | Rotary drilling rig drill stem and rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970516U true CN202970516U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220730577 Expired - Lifetime CN202970516U (en) | 2012-12-26 | 2012-12-26 | Rotary drilling rig drill stem and rotary drilling rig |
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| Country | Link |
|---|---|
| CN (1) | CN202970516U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061681A (en) * | 2012-12-26 | 2013-04-24 | 上海中联重科桩工机械有限公司 | Drill rod for rotary drilling rig and rotary drilling rig |
| CN104847253A (en) * | 2015-05-18 | 2015-08-19 | 佛山煦宸工程机械有限公司 | Drain disc quick to maintain and manufacturing method thereof |
-
2012
- 2012-12-26 CN CN 201220730577 patent/CN202970516U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061681A (en) * | 2012-12-26 | 2013-04-24 | 上海中联重科桩工机械有限公司 | Drill rod for rotary drilling rig and rotary drilling rig |
| CN104847253A (en) * | 2015-05-18 | 2015-08-19 | 佛山煦宸工程机械有限公司 | Drain disc quick to maintain and manufacturing method thereof |
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