CN208858298U - Rotary drilling rig connection frame, connection frame group and rotary drilling rig - Google Patents
Rotary drilling rig connection frame, connection frame group and rotary drilling rig Download PDFInfo
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- CN208858298U CN208858298U CN201821279306.5U CN201821279306U CN208858298U CN 208858298 U CN208858298 U CN 208858298U CN 201821279306 U CN201821279306 U CN 201821279306U CN 208858298 U CN208858298 U CN 208858298U
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Abstract
This disclosure relates to a kind of rotary drilling rig connection frame, connection frame group and rotary drilling rig.Rotary drilling rig connection frame (200) includes: supporting vertical plate (210)；Convex mounting portion (220) and recessed mounting portion (230), the first side and second side of the supporting vertical plate (210) are separately positioned on along the vertical direction of the supporting vertical plate (210), wherein, it is equipped with fixation hole on the convex mounting portion (220) and the recessed mounting portion (230), first side is the reverse side of described second side.The disclosure can satisfy engineering project to the construction requirement of different bore diameters.
Description
Technical field
This disclosure relates to rotary drilling rig field more particularly to a kind of rotary drilling rig connection frame, connection frame group and churning driven
Machine.
Background technique
Rotary drilling rig is the common foundation construction equipment for bored concrete pile operation, is built for room, high-speed rail construction, bridge construction
Equal construction fields, its main feature is that construction efficiency is high, speed of fulfiling hole is fast.Rotary drilling rig by power head drive drilling rod complete drilling at
Hole operation, power head can be moved up and down along the brill mast of rotary drilling rig to realize that different brills requires deeply.
Existing rotary drilling rig is limited by power head conventional structure, and power head distance is bored mast distance and is usually fixed
Constant, and bore diameter is then determined by the distance, therefore in practice of construction, existing rotary drilling rig is difficult to meet engineering
Construction requirement of the project to different bore diameters.
Utility model content
In view of this, the embodiment of the present disclosure provides a kind of rotary drilling rig connection frame, connection frame group and rotary drilling rig, it can
Meet engineering project to the construction requirement of different bore diameters.
In one aspect of the present disclosure, a kind of rotary drilling rig connection frame is provided, comprising:
Supporting vertical plate；
Convex mounting portion and recessed mounting portion are separately positioned on the of the supporting vertical plate along the vertical direction of the supporting vertical plate
Side and second side,
Wherein, fixation hole is equipped on the convex mounting portion and the recessed mounting portion, first side is described second
The reverse side of side.
Further, the supporting vertical plate includes box support construction.
Further, the convex mounting portion is box-structure and/or the recessed mounting portion is box-structure.
Further, the risers of the supporting vertical plate are rectangle, the quantity of the convex mounting portion and the recessed mounting portion
It is four, is respectively provided at the position in the supporting vertical plate close to rectangle quadrangle.
Further, the axis of the fixation hole is configured as when the rotary drilling rig connection frame is in running order
It is parallel with vertical direction.
Further, the convex mounting portion includes at least two convex mounting portion groups being intervally arranged along the vertical direction, each
The first box connector is equipped between adjacent convex mounting portion in convex mounting portion group；And/or
The recessed mounting portion includes at least two recessed mounting portion groups being intervally arranged along the vertical direction, each recessed mounting portion group
In adjacent recessed mounting portion between be equipped with the second box connector.
Further, the first box connector is recessed to the supporting vertical plate side relative to the adjacent convex mounting portion
Enter, the second box connector is recessed to the supporting vertical plate side relative to the adjacent recessed mounting portion.
Further, the first side surface of the supporting vertical plate be equipped with the multiple first vertical gussets, the multiple first
Vertical gusset also with the convex mounting portion or the first box connector against or connect.
Further, the second side surface of the supporting vertical plate be equipped with the multiple second vertical gussets, the multiple second
Vertical gusset also with the recessed mounting portion or the second box connector against or connect.
Further, at least one lightening hole is equipped in the supporting vertical plate.
In one aspect of the present disclosure, a kind of connection frame group is provided, comprising: at least two rotary drilling rig connections above-mentioned
Frame, vertical direction of at least two rotary drilling rigs with connection frame along the supporting vertical plate is sequentially overlapped, and the churning driven
Machine carries out male-female engagement by the recessed mounting portion of convex mounting portion and adjacent rotary drilling rig connection frame with connection frame, and passes through company
Fitting is fixedly connected the convex mounting portion of male-female engagement and the recessed mounting portion.
Further, at least two rotary drilling rigs are same specification with connection frame, or including different size.
In one aspect of the present disclosure, a kind of rotary drilling rig, including power head assembly and brill mast are provided, wherein described dynamic
Connection frame group above-mentioned is equipped between power head assembly and the bracket for boring mast.
Further, the connection frame group is configured as being wanted according to the different spacing of the power head assembly and the bracket
Ask the quantity and specification of selection rotary drilling rig connection frame.
Further, near the convex installation of the rotary drilling rig connection frame of the power head assembly in the connection frame group
Portion is fixedly connected with the power head box of the power head assembly and antinose-dive leg by connector, in the connection frame group near
The recessed mounting portion of the nearly rotary drilling rig connection frame for boring mast is fixedly connected with the bracket by connector.
Therefore, according to the embodiment of the present disclosure, convex mounting portion and recessed peace is respectively set by the reversed two sides in supporting vertical plate
Dress portion enables rotary drilling rig to be overlapped as needed with connection frame, and passes through adjacent rotary drilling rig connection frame
Male-female engagement between convex mounting portion and recessed mounting portion, then be fixed by connector, thus enable rotary drilling rig according to
Demand selects a certain number of rotary drilling rigs to be combined with connection frame to realize extension, to meet engineering project to different brills
The construction requirement of bore dia.
Detailed description of the invention
The attached drawing for constituting part of specification describes embodiment of the disclosure, and together with the description for solving
Release the principle of the disclosure.
The disclosure can be more clearly understood according to following detailed description referring to attached drawing, in which:
Fig. 1-Fig. 2 is to be shown according to some embodiments of disclosure rotary drilling rig connection frame in the stereochemical structure of different angle
It is intended to；
Fig. 3 is the sectional perspective structural schematic diagram according to some embodiments of disclosure rotary drilling rig；
Fig. 4 is the configuration schematic diagram of connection frame group in some embodiments according to disclosure rotary drilling rig.
It should be understood that the size of various pieces shown in attached drawing is not to draw according to actual proportionate relationship.
In addition, same or similar reference label indicates same or similar component.
Specific embodiment
The various exemplary embodiments of the disclosure are described in detail now with reference to attached drawing.Description to exemplary embodiment
It is merely illustrative, never as to the disclosure and its application or any restrictions used.The disclosure can be with many differences
Form realize, be not limited to the embodiments described herein.These embodiments are provided so that the disclosure is thorough and complete, and
The scope of the present disclosure is given full expression to those skilled in the art.It should also be noted that unless specifically stated otherwise, otherwise in these implementations
Component and the positioned opposite of step, numerical expression and numerical value described in example should be construed as merely illustratively, without
It is as limitation.
" first ", " second " used in the disclosure and similar word are not offered as any sequence, quantity or again
The property wanted, and be used only to distinguish different parts.The similar word such as " comprising " or "comprising" means the element before the word
Cover the element enumerated after the word, it is not excluded that be also covered by the possibility of other element."upper", "lower", "left", "right" etc. are only used
In indicating relative positional relationship, after the absolute position for being described object changes, then the relative positional relationship may also be correspondingly
Change.
In the disclosure, when being described to certain device between the first device and the second device, in the certain device
There may be devices between two parties between the first device or the second device, and device between two parties can also be not present.When being described to specific device
When part connects other devices, which can be directly connected to without device between two parties with the other devices, can also be with
It is not directly connected to the other devices and there is device between two parties.
All terms (including technical term or scientific term) that the disclosure uses are common with disclosure fields
The meaning that technical staff understands is identical, unless otherwise specifically defined.It is also understood that in term such as defined in the general dictionary
The meaning consistent with their meanings in the context of the relevant technologies should be interpreted as having, without application idealization or
The meaning of extremely formalization explains, unless being clearly defined herein.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It as Figure 1-Figure 2, is some embodiments according to disclosure rotary drilling rig connection frame in the vertical of different angle
Body structural schematic diagram.With reference to Fig. 1 and Fig. 2, in some embodiments, rotary drilling rig connection frame includes: supporting vertical plate 210, convex
Mounting portion 220 and recessed mounting portion 230.Wherein, the Vertical Square of convex mounting portion 220 and recessed mounting portion 230 along the supporting vertical plate 210
To the first side and second side for being separately positioned on the supporting vertical plate 210.Here the first side is the reverse side of second side.
In conjunction with Fig. 3, the first side of supporting vertical plate 210 be can be close to the side of power head assembly 100, and second side is remote
Side from power head assembly 100.In further embodiments, the first side of supporting vertical plate 210 can also be set as separate
The side of power head assembly 100, and second side is set as close to the side of power head assembly 100.In order to mitigate supporting vertical plate
210 weight can be equipped at least one lightening hole in the supporting vertical plate 210, such as positioned at 210 central construct of supporting vertical plate
Loss of weight through-hole 260 after optimization (load that this position is born is seldom).In another example the case supports structure of supporting vertical plate 210 is upper
In 260 two sides of loss of weight through-hole and multiple lightening holes between the convex mounting portion 220 of upside and the convex mounting portion 220 of downside
270.In addition, may be provided for installing the mounting plate of hydraulic vavle shelf and electric pipeline between the convex mounting portion 220 of upside
280。
It is equipped with fixation hole on the convex mounting portion 220 and the recessed mounting portion 230, by convex mounting portion 220 and recessed peace
Dress portion 230 be respectively cooperating with connector 400 realize the rotary drilling rig connection frame and power head assembly 100, bore mast bracket 300 or
Another rotary drilling rig that person is disposed adjacent is fixedly connected with connection frame.Connector preferably uses pin shaft, is connected by pin shaft
The mode of connecing may make the installation and removal of rotary drilling rig connection frame more convenient.And in further embodiments, connector can also
Using bolt etc..
In Fig. 1, supporting vertical plate 210 may include box support construction, and this support construction can bear biggish load, when
Supporting vertical plate is capable of providing reliable and stable supporting role when rotary drilling rig is in severe duty.For as being connected and fixed part
Convex mounting portion 220 or recessed mounting portion 230 strength and stiffness preferably box-structure can be used, to realize more reliable connection effect
Fruit.In further embodiments, convex mounting portion 220 and recessed mounting portion 230 can use box-structure.
It, can be by the axis of convex mounting portion 220 and the fixation hole of recessed mounting portion 230 in order to improve the force-bearing situation of connector 400
Line is arranged to parallel with vertical direction when the rotary drilling rig connection frame 200 is in running order.With reference to Fig. 1 and Fig. 2,
When standing upright with connection frame 200, the axis of fixation hole and the connector being threaded through in fixation hole is all flat with vertical direction for rotary drilling rig
Row.For pin shaft, card slot can be opened up on pin shaft, and gear is installed on convex mounting portion or recessed mounting portion by bolt
Plate, and so that baffle is caught in card slot to realize the axial restriction effect to pin shaft.
Power head assembly can generate perpendicular relative to the bracket 300 of rotary drilling rig connection frame 200 and brill mast at work
Histogram to power, a part of this power can be undertaken by convex mounting portion 220 and recessed mounting portion 230, to reduce connector 400
Suffered shearing force improves the service life of connector 400, improves the safety in rotary drilling rig operational process.
With reference to Fig. 1, convex mounting portion 220 is stretched relative to the plane of supporting vertical plate 210 to the vertical direction of supporting vertical plate 210
Out, which can carry out male-female engagement with the recessed mounting portion 230 of another rotary drilling rig connection frame 200.Change sentence
It talks about, which is inserted into the recessed mounting portion 230 of another rotary drilling rig connection frame 200, is then filled
Match.In addition, company can also be fixed with the mounting portion on the mounting portion or brill mast in power head assembly in the convex mounting portion 220
It connects.
With reference to Fig. 2, recessed mounting portion 230 can be designed to the body structure with female parts 232, can also be designed to phase
For the structure of the plane indent of supporting vertical plate 210.For rotary drilling rig connection frame 200 comprising convex mounting portion
220 and recessed mounting portion 230 setting position and structure size can be mutually matched, so as to multiple mutually isostructural rotary drilling rigs
Male-female engagement is successively carried out by stacked system with connection frame 200.In further embodiments, rotary drilling rig connection frame 200
Including convex mounting portion 220 and recessed mounting portion 230 setting position and structure size can mismatch, it is only necessary to another
Rotary drilling rig connection frame 200, the mounting portion in power head assembly or the mounting portion bored on mast can cooperate realization is fixed to connect
It connects.
In fig. 1 and 2, the risers of supporting vertical plate 210 are preferably rectangle.And convex mounting portion 220 and recessed mounting portion 230
Quantity be four, be respectively provided in the supporting vertical plate 210 close to rectangle quadrangle position.Setting can make load point in this way
Cloth is more balanced, avoids local stress excessive.In further embodiments, convex mounting portion 220 and the respective quantity of recessed mounting portion 230
Four are not limited to, can also be three or five or more.Distribution mode is also not necessarily limited to corner location, can also be close to supporting vertical plate
210 central location.
In supporting vertical plate, convex mounting portion 220 may include at least two convex mounting portion groups being intervally arranged along the vertical direction.
With reference to Fig. 1, the first box connector 221 is equipped between the adjacent convex mounting portion 220 in each convex mounting portion group.Box connection
Part 221 can be made into integration with convex mounting portion 220, adjacent convex installation can also be arranged in by way of welding or being close to setting
Between portion 220.It can make convex mounting portion group that there is stronger bearing capacity and lateral stiffness by the box connector 221.Similarly,
Recessed mounting portion 230 may also comprise the recessed mounting portion group of at least two to be intervally arranged along the vertical direction, in each recessed mounting portion group
The second box connector 231 is equipped between adjacent recessed mounting portion 230.
It, can in order to avoid box connector causes to interfere when convex mounting portion 220 and recessed mounting portion 230 carry out male-female engagement
So that the first box connector 221 be configured to it is recessed to 210 side of supporting vertical plate relative to the adjacent convex mounting portion 220
Enter, with reference to Fig. 1, concave portion can or indent fold-line-shaped arc-shaped in indent.It similarly, can also be by the second box connector 231
It is configured to recessed to 210 side of supporting vertical plate relative to the adjacent recessed mounting portion 230, with reference to Fig. 2, concave portion can be in
Indent is arc-shaped or indent fold-line-shaped.
In order to further strengthen the support stiffness of supporting vertical plate 210, can be equipped in the first side surface of supporting vertical plate 210
Multiple first vertical gussets 240.Also, multiple first vertical gussets 240 can also be with the convex mounting portion 220 or described
One box connector 221 against or connection, to further increase the bearing capacity of convex mounting portion group.In the supporting vertical plate
The multiple second vertical gussets 250 also can be set in 210 the second side surface, to reinforce the support stiffness of supporting vertical plate 210.And
And multiple second vertical gussets 250 can also with the recessed mounting portion 230 or the second box connector 231 against or even
It connects, to further increase the bearing capacity of convex mounting portion group.
Above-mentioned rotary drilling rig constitutes connection frame group by combination different number with 200 embodiment of connection frame.Some
In embodiment, connection frame group includes at least two rotary drilling rig above-mentioned connection frames 200.At least two rotary drilling rigs are used
Connection frame 200 is sequentially overlapped along the vertical direction of the supporting vertical plate 210, and the rotary drilling rig with connection frame 200 by convex
The recessed mounting portion 230 of mounting portion 220 and adjacent rotary drilling rig connection frame 200 carries out male-female engagement.
With reference to Fig. 4, the first side of adjacent each rotary drilling rig connection frame 200 is such a all in same direction side
First side of rotary drilling rig connection frame 200 is adjacent with second side of another rotary drilling rig connection frame 200, also, this
The convex mounting portion of side plugs in the recessed mounting portion of the second side, and by connector 400 to the convex peace of male-female engagement
Dress portion 220 and the recessed mounting portion 230 are fixedly connected.
Same specification can be used with connection frame 200 in these rotary drilling rigs, i.e., the structure of rotary drilling rig connection frame 200 and
Size is all the same, to realize better interchangeability.In further embodiments, these rotary drilling rig connection frames 200 can also wrap
Different size is included, to increase adaptability, meets the needs under different operating conditions.
With reference to Fig. 3 and rotary drilling rig embodiment shown in Fig. 4, rotary drilling rig may include power head assembly 100 and brill mast (its
The non-this case emphasis of remaining part part omits description here).Power head assembly 100 may include power head 110, power head box 120 and case
Body support frame 130, power head 110 are arranged in power head box 120.Boring mast may include bracket 300 and mast (not shown).
The settable connection frame group above-mentioned between the power head assembly 100 and the bracket 300 for boring mast.
In Fig. 3, near the convex peace of the rotary drilling rig connection frame 200 of the power head assembly 100 in connection frame group
Dress portion 220 is fixedly connected with the power head box 120 of the power head assembly 100 and antinose-dive leg 130 by connector 400.
It is logical near the recessed mounting portion 220 of the rotary drilling rig connection frame 200 for boring mast and the bracket 300 in the connection frame group
Connector 400 is crossed to be fixedly connected.
Connection frame group can be configured as the different pitch requirements according to the power head assembly 100 and the bracket 300
Select the quantity and specification of rotary drilling rig connection frame 200.For example, with reference to Fig. 4, the rotary drilling rig of same specification is used
For connection frame 200, the spacing of the fixation axially bored line of the fixation axially bored line of convex mounting portion 220 to recessed mounting portion 230 is d, and
Can be calculated according to the demand space D of power head assembly 100 and the bracket 300 about needs churning driven to be used in connection frame group
Machine is N with the quantity of connection frame 200, can be realized as demand space D after spacing d superposition N number of in this way.In another example,
Space D the rotary drilling rig connection frame 200 of different size can be selected to be overlapped according to demand, to realize more accurately spacing tune
Section.
So far, the presently disclosed embodiments is described in detail.In order to avoid covering the design of the disclosure, do not describe
Some details known in the field.Those skilled in the art as described above, completely it can be appreciated how implement here
Disclosed technical solution.
Although being described in detail by some specific embodiments of the example to the disclosure, the skill of this field
Art personnel it should be understood that above example merely to be illustrated, rather than in order to limit the scope of the present disclosure.The skill of this field
Art personnel it should be understood that can not depart from the scope of the present disclosure and spirit in the case where, modify to above embodiments or
Some technical features can be equivalently replaced.The scope of the present disclosure is defined by the following claims.
Claims (15)
1. a kind of rotary drilling rig is with connection frame (200) characterized by comprising
Supporting vertical plate (210)；
Convex mounting portion (220) and recessed mounting portion (230) are separately positioned on described along the vertical direction of the supporting vertical plate (210)
First side of supporting vertical plate (210) and second side,
Wherein, it is equipped with fixation hole on the convex mounting portion (220) and the recessed mounting portion (230), first side is institute
State the reverse side of second side.
2. rotary drilling rig according to claim 1 is with connection frame (200), which is characterized in that supporting vertical plate (210) packet
Include box support construction.
3. rotary drilling rig according to claim 1 is with connection frame (200), which is characterized in that the convex mounting portion (220) is
Box-structure and/or the recessed mounting portion (230) are box-structure.
4. rotary drilling rig according to claim 1 is with connection frame (200), which is characterized in that the supporting vertical plate (210)
Risers are rectangle, and the quantity of the convex mounting portion (220) and the recessed mounting portion (230) is four, are respectively provided at described
Close to the position of rectangle quadrangle in supporting vertical plate (210).
5. rotary drilling rig according to claim 1 is with connection frame (200), which is characterized in that the axis quilt of the fixation hole
It is configured to parallel with vertical direction when the rotary drilling rig connection frame (200) is in running order.
6. rotary drilling rig according to claim 1 is with connection frame (200), which is characterized in that convex mounting portion (220) packet
The convex mounting portion group of at least two to be intervally arranged along the vertical direction is included, the adjacent convex mounting portion (220) in each convex mounting portion group
Between be equipped with the first box connector (221)；And/or
The recessed mounting portion (230) includes at least two recessed mounting portion groups being intervally arranged along the vertical direction, each recessed mounting portion
The second box connector (231) is equipped between adjacent recessed mounting portion (230) in group.
7. rotary drilling rig according to claim 6 is with connection frame (200), which is characterized in that the first box connector
(221) recessed relative to adjacent convex mounting portion (220) Xiang Suoshu supporting vertical plate (210) side, the second box connection
Part (231) is recessed relative to adjacent recessed mounting portion (230) Xiang Suoshu supporting vertical plate (210) side.
8. rotary drilling rig according to claim 6 is with connection frame (200), which is characterized in that in the supporting vertical plate (210)
The first side surface be equipped with the multiple first vertical gussets (240), the multiple first vertical gusset (240) also with the convex installation
Portion (220) or the first box connector (221) against or connection.
9. rotary drilling rig according to claim 6 is with connection frame (200), which is characterized in that in the supporting vertical plate (210)
The second side surface be equipped with the multiple second vertical gussets (250), the multiple second vertical gusset (250) also with the recessed installation
Portion (230) or the second box connector (231) against or connection.
10. rotary drilling rig according to claim 1 is with connection frame (200), which is characterized in that in the supporting vertical plate
(210) it is equipped at least one lightening hole (260,270).
11. a kind of connection frame group characterized by comprising any rotary drilling rig of at least two claims 1~10 is used
Connection frame (200), at least two rotary drilling rigs with connection frame (200) along the supporting vertical plate (210) vertical direction according to
Secondary superposition, and the rotary drilling rig passes through convex mounting portion (220) and adjacent rotary drilling rig connection frame with connection frame (200)
(200) recessed mounting portion (230) carries out male-female engagement, and by connector (400) to the convex mounting portion of male-female engagement
(220) it is fixedly connected with the recessed mounting portion (230).
12. connection frame group according to claim 11, which is characterized in that at least two rotary drilling rig connection frames
It (200) is same specification, or including different size.
13. a kind of rotary drilling rig, including power head assembly (100) and brill mast, which is characterized in that in the power head assembly
(100) connection frame group described in claim 11 or 12 is equipped between the bracket (300) for boring mast.
14. rotary drilling rig according to claim 13, which is characterized in that the connection frame group is configured as according to described dynamic
The different pitch requirements of power head assembly (100) and the bracket (300) select quantity and rule of the rotary drilling rig with connection frame (200)
Lattice.
15. rotary drilling rig according to claim 13, which is characterized in that near the power head in the connection frame group
The convex mounting portion (220) of the rotary drilling rig of component (100) connection frame (200) and the power head of the power head assembly (100)
Cabinet (120) is fixedly connected with antinose-dive leg (130) by connector (400), near the brill mast in the connection frame group
Recessed mounting portion (230) and the bracket (300) of rotary drilling rig connection frame (200) be fixedly connected by connector (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279306.5U CN208858298U (en) | 2018-08-09 | 2018-08-09 | Rotary drilling rig connection frame, connection frame group and rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279306.5U CN208858298U (en) | 2018-08-09 | 2018-08-09 | Rotary drilling rig connection frame, connection frame group and rotary drilling rig |
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| CN208858298U true CN208858298U (en) | 2019-05-14 |
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| CN201821279306.5U Active CN208858298U (en) | 2018-08-09 | 2018-08-09 | Rotary drilling rig connection frame, connection frame group and rotary drilling rig |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625793A (en) * | 2018-08-09 | 2018-10-09 | 徐州徐工基础工程机械有限公司 | Rotary drilling rig link, link group and rotary drilling rig |
| CN110454081A (en) * | 2019-09-24 | 2019-11-15 | 北京三一智造科技有限公司 | Power head Variable Centre Distance structure and rotary drilling rig |
| CN110700755A (en) * | 2019-11-14 | 2020-01-17 | 徐州健川机械制造有限公司 | Rotary drilling rig power head convenient to mount and dismount |
-
2018
- 2018-08-09 CN CN201821279306.5U patent/CN208858298U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625793A (en) * | 2018-08-09 | 2018-10-09 | 徐州徐工基础工程机械有限公司 | Rotary drilling rig link, link group and rotary drilling rig |
| CN110454081A (en) * | 2019-09-24 | 2019-11-15 | 北京三一智造科技有限公司 | Power head Variable Centre Distance structure and rotary drilling rig |
| CN110700755A (en) * | 2019-11-14 | 2020-01-17 | 徐州健川机械制造有限公司 | Rotary drilling rig power head convenient to mount and dismount |
| CN110700755B (en) * | 2019-11-14 | 2021-03-19 | 徐州健川机械制造有限公司 | Rotary drilling rig power head convenient to mount and dismount |
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