CN111636820B - Rotary drilling rig with fixing device with good stability - Google Patents
Rotary drilling rig with fixing device with good stability Download PDFInfo
- Publication number
- CN111636820B CN111636820B CN202010518830.9A CN202010518830A CN111636820B CN 111636820 B CN111636820 B CN 111636820B CN 202010518830 A CN202010518830 A CN 202010518830A CN 111636820 B CN111636820 B CN 111636820B
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- Prior art keywords
- spring
- groove
- mounting seat
- plate
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005553 drilling Methods 0.000 title claims abstract description 26
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 14
- 238000013016 damping Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 10
- 230000035939 shock Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of rotary drilling rigs, in particular to a rotary drilling rig with a fixing device with good stability, which comprises a bottom plate and a cab, wherein a base is fixed on one side, far away from the cab, of the top surface of the bottom plate, a mounting groove is formed in the front end of the base, a clamping groove III is formed in the vertical walls on two sides of the mounting groove, a rotating shaft is clamped in the clamping groove III through a first spring, a mounting seat is fixed on the top of the rotating shaft through a supporting column, a guide slide column is fixed on the front part of the top surface of the mounting seat, a clamping groove I is formed in the front vertical surface of the guide slide column, a drilling rig rod is fixedly connected with the clamping groove I through a clamping plate, connecting rods are respectively fixed on the vertical surfaces on two sides of the mounting seat, a damping connecting device is fixed on one end, far away from the mounting seat, a telescopic rod is fixedly arranged on the bottom surface of the damping connecting device, a supporting rod is fixed on the bottom surface of the telescopic rod, a stabilizing plate is fixed on the bottom surface of the supporting rod, and the damping connecting device is arranged on the mounting seat, so that the vibration generated by the drilling rig rod in the working process can be effectively replaced.
Description
Technical Field
The invention relates to the technical field of rotary drilling rigs, in particular to a rotary drilling rig with a fixing device with good stability.
Background
The rotary drilling rig is a construction machine suitable for pore-forming operation in building foundation engineering, is mainly suitable for soil layer construction of sandy soil, cohesive soil, silty soil and the like, is widely applied to foundation construction of various foundations such as cast-in-place piles, continuous walls, foundation reinforcement and the like, has rated power of 125-450 kW generally, power output torque of 120-400 kN.m, maximum pore-forming diameter of 1.5-4 m and maximum pore-forming depth of 60-90 m, can meet the requirements of various large foundation constructions, has the characteristics of light and comfortable operation and the like, but a base of the traditional rotary drilling rig needs to bear great pressure in actual work, so that the traditional rotary drilling rig needs to be relieved by a better stabilizing device, is not very good in work stability, and provides the rotary drilling rig with a fixing device with good stability.
Through retrieving, chinese patent number CN 209724218U's patent discloses a dig rig soon with fixing device that steadiness is good, including the mount pad, the bottom fixed mounting of mount pad has the roof, the bottom fixed mounting of roof has first damping spring. This dig rig soon with fixing device that steadiness is good through setting up the roof, can produce great pressure at the in-process that digs the rig soon and work, this pressure will bear by the base of dig the rig soon, through setting up first damping spring and second damping spring in the bottom of roof and the top of bottom plate, at first roof can be pushed down when pressure comes to the base, at this moment the mobile jib will be pushed down, remove the second damping spring that pushes down between the bracing piece, the impact force that first damping spring and second damping spring gradually reduce the pressure brought, thereby the rocking of dig the rig soon has been reduced, the steadiness of dig the rig soon has been improved, its in-process of using mostly has following not enough: the structure is complicated, and damper sets up on automobile body both sides and automobile body mount pad, and the rig pole is main vibrations part in the actual working, and prior art can not directly play the shock attenuation effect to the vibrations of rig pole, leads to the shock attenuation effect unobvious.
Disclosure of Invention
The invention aims to provide a rotary drilling rig with a fixing device with good stability, so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a dig rig soon with fixing device that steadiness is good, includes bottom plate and driver's cabin, driver's cabin fixed mounting is in bottom plate one side front end, bottom plate top surface is kept away from driver's cabin one side fixed mounting and is had the base, the base front end is opened there is the mounting groove, the draw-in groove three has been opened to mounting groove both sides standing wall, the draw-in groove has the pivot through first spring joint, pivot top has the mount pad through support column fixed mounting, the anterior fixed mounting of mount pad top surface has the guide strut, guide strut front end facade is opened there is draw-in groove one, draw-in groove one is through cardboard fixedly connected with rig pole, mount pad both sides facade respectively fixed mounting has the connecting rod, the connecting rod is kept away from mount pad one end and is fixed with shock attenuation connecting device, shock attenuation connecting device bottom surface fixed mounting has the telescopic link, telescopic link bottom surface fixed mounting has the bracing piece, bracing piece bottom surface fixed mounting has the stabilizer.
As a further scheme of the invention: the shock attenuation connecting device is including connecting main part and connecting plate, and it has draw-in groove two to open to connect the main part bottom, connecting main part is located draw-in groove two tops in the middle through second spring and connecting plate swing joint, is located second spring both sides draw-in groove two top surface fixed mounting have the floor, and second spring one side and draw-in groove two's lateral wall top fixed mounting have the horizontal pole to keep away from the floor, the horizontal pole outside is close to floor one side and is equipped with the third spring, is located the horizontal pole outside between the standing wall of third spring and draw-in groove two still to be equipped with the slide bar, and the slide bar is kept away from third spring one end fixed mounting and is had the dead lever, and the one end and the connecting plate fixed connection that the slide bar was kept away from to the dead lever.
As a further scheme of the invention: the top surface of the front end of the mounting seat is provided with a limiting via hole, and one end, far away from the clamping plate, of the drilling machine rod penetrates through the limiting via hole and is fixedly provided with a drilling machine head.
As a further scheme of the invention: the bottom surface of the bottom plate is connected with a rotating wheel through a crawler belt.
As a further scheme of the invention: and a fourth spring is connected between the vertical surface at the rear end of the mounting seat and the top surface of the base.
As a further scheme of the invention: the drill head and the stabilizing plate are in triangular position relation.
As a further scheme of the invention: the stabilizing plate is in a horn shape.
As still further aspects of the invention: the stabilizing plate is made of rubber.
Compared with the prior art, the invention has the beneficial effects that: through jointly setting up rig pole and shock attenuation connecting device on the mount pad, can effectually play the cushioning effect to the vibrations that the rig produced at the rig pole in the course of the work, not only can cushion Z impact force to, simultaneously through setting up first spring and third spring, can prevent that the rig pole from rocking about because of vibrations to play better stable effect.
Drawings
Fig. 1 is a schematic structural view of a rotary drilling rig with a well-secured fixture.
Fig. 2 is a schematic top view of a rotary drilling rig with a well-secured fixture.
Fig. 3 is a schematic view of a partial sectional structure of a rotary drilling machine with a fastening device with good stability.
Fig. 4 is a schematic view showing an internal structure of a shock absorbing connection device in a rotary drilling rig having a fixing device with good stability.
In the figure: 1-baseboard, 2-cab, 3-pedestal, 301-mounting groove, 302-neck three, 303-first spring, 304-spindle, 4-mount, 401-limit via, 5-support post, 6-slide guide post, 601-neck one, 602-cardboard, 603-drill rod, 604-drill head, 7-connecting rod, 8-shock absorbing connecting device, 801-connecting body, 802-connecting plate, 803-second spring, 804-rib plate, 805-cross bar, 806-slide bar, 807-third spring, 808-diagonal bar, 809-neck two, 9-telescopic bar, 10-support bar, 11-stabilizing plate, 12-track, 13-runner, 14-fourth spring.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
Referring to fig. 1 to 4, in the embodiment of the invention, a rotary drilling rig with a fixing device with good stability comprises a bottom plate 1 and a cab 2, wherein the bottom surface of the bottom plate 1 is connected with a rotating wheel 13 through a crawler 12; the cab 2 is fixedly arranged at the front end of one side of the bottom plate 1, a base 3 is fixedly arranged at one side, far away from the cab 2, of the top surface of the bottom plate 1, a mounting groove 301 is formed in the front end of the base 3, clamping grooves three 302 are formed in the vertical walls of two sides of the mounting groove 301, a rotating shaft 304 is clamped in the clamping grooves three 302 through a first spring 303, a mounting seat 4 is fixedly arranged at the top of the rotating shaft 304 through a supporting column 5, and a fourth spring 14 is connected between the vertical surface of the rear end of the mounting seat 4 and the top surface of the base 3; the front part of the top surface of the mounting seat 4 is fixedly provided with a guide slide column 6, the front end elevation of the guide slide column 6 is provided with a clamping groove I601, the clamping groove I601 is fixedly connected with a drilling machine rod 603 through a clamping plate 602, the top surface of the front end of the mounting seat 4 is provided with a limiting through hole 401, and one end of the drilling machine rod 603 far away from the clamping plate 602 penetrates through the limiting through hole 401 to be fixedly provided with a drilling machine head 604; connecting rods 7 are fixedly installed on vertical surfaces on two sides of the mounting seat 4 respectively, a damping connecting device 8 is fixed at one end, far away from the mounting seat 4, of the connecting rods 7, a telescopic rod 9 is fixedly installed on the bottom surface of the damping connecting device 8, a supporting rod 10 is fixedly installed on the bottom surface of the telescopic rod 9, and a stabilizing plate 11 is fixedly installed on the bottom surface of the supporting rod 10; the drill head 604 and the stabilizing plate 11 are in a triangular position relationship; through setting up first spring 303, can alleviate mount pad 4 and rock for base 3 production to guarantee the steadiness of automobile body, through setting up fourth spring 14, can play stable spacing effect to mount pad 4, through setting up rig head 604 and stabilizer plate 11 into triangle-shaped positional relationship, because triangle-shaped has fine stability, can further increase the stability of device from the structure.
Further, in order to achieve a better stabilizing effect of the rotary drilling rig, the shock absorbing connecting device 8 comprises a connecting main body 801 and a connecting plate 802, a clamping groove II 809 is formed in the bottom of the connecting main body 801, the connecting main body 801 is located in the middle of the top of the clamping groove II 809 and is movably connected with the connecting plate 802 through a second spring 803, rib plates 804 are fixedly arranged on the top surface of the clamping groove II 809 and located on two sides of the second spring 803, a cross rod 805 is fixedly arranged on one side, away from the second spring 803, of the rib plates 804, a third spring 807 is arranged on the outer side, close to the side of the rib plates 804, of the cross rod 805, a sliding rod 806 is further arranged on the outer side, located between the third spring 807 and the vertical wall of the clamping groove II 809, of the sliding rod 806 is fixedly arranged with a diagonal rod 808, and one end, away from the sliding rod 806, of the diagonal rod 808 is fixedly connected with the connecting plate 802; through setting up the second spring 803, can effectually play the effect of trading towards the vibrations that rig produced at the in-process rig pole 603, through setting up slide bar 806 and third spring 807, not only can cushion the impact force of rig pole 603Z to, can also prevent that rig pole 603 from rocking about because of vibrations.
Example two
In another embodiment of the present invention, the difference between the embodiment and the above embodiment is that the stabilizing plate 11 has a horn shape; the stabilizing plate 11 is made of rubber; by setting the stabilizer plate 11 to be horn-shaped, the material is set to be rubber, and the shaking of the drill rod 603 and the drill head 604 generated in the working process can be further relieved, so that the stability of the whole device is increased.
The working principle of the invention is as follows:
Through setting up first spring 303, can alleviate the rocking of mount pad 4 for base 3 production, thereby guarantee the steadiness of automobile body, through setting up fourth spring 14, can play the effect of stabilizing spacing to mount pad 4, through setting up rig head 604 and stabilizer 11 into triangle-shaped positional relationship, through setting up second spring 803, can effectually play the effect of dashing to the vibrations that rig pole 603 produced in the course of the work, through setting up slide bar 806 and third spring 807, not only can cushion the impact force of rig pole 603Z to, can also prevent that rig pole 603 from rocking about owing to vibrations, through setting up rig pole 603 and damping connection device 8 jointly on mount pad 4, can effectually play the effect of buffering to the vibrations that rig pole 603 produced in the course of the work, not only can cushion Z impact force, simultaneously through setting up first spring 303 and third spring 807, can prevent that rig pole 603 from rocking about owing to vibrations, thereby play better stable effect.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (1)
1. The utility model provides a rotary drilling rig with fixing device that steadiness is good, includes bottom plate (1) and driver's cabin (2), its characterized in that, driver's cabin (2) fixed mounting is in bottom plate (1) one side front end, bottom plate (1) top surface is kept away from driver's cabin (2) one side fixed mounting and is had base (3), base (3) front end is opened there is mounting groove (301), mounting groove (301) both sides standing wall is opened there is draw-in groove three (302), draw-in groove three (302) have pivot (304) through first spring (303) joint, pivot (304) top is through support column (5) fixed mounting seat (4), mounting seat (4) top surface front portion fixed mounting has guide strut (6), guide strut (6) front end facade is opened there is draw-in groove one (601), draw-in groove one (601) are through cardboard (602) fixedly connected with drilling machine pole (603), mounting seat (4) both sides are connecting rod (7) respectively fixed mounting, mounting seat (4) one end fixed connection device (8) are kept away from to connecting rod (7), bottom surface connecting device (8) have a bracing piece (10) fixed mounting strut (10), the damping connecting device (8) comprises a connecting main body (801) and a connecting plate (802), wherein a clamping groove II (809) is formed in the bottom of the connecting main body (801), the connecting main body (801) is located in the middle of the top of the clamping groove II (809) and is movably connected with the connecting plate (802) through a second spring (803), rib plates (804) are fixedly arranged on the top surface of the clamping groove II (809) and located on two sides of the second spring (803), cross bars (805) are fixedly arranged on the top surface of the side wall of the clamping groove II (809) away from one side of the second spring (803), a third spring (807) is arranged on the outer side of the cross bars (805) close to one side of the rib plates (804), a sliding rod (806) is further arranged on the outer side of the cross bars (805) between the third spring (807) and the vertical wall of the clamping groove II (809), an inclined rod (808) is fixedly arranged at one end of the sliding rod (806) away from the third spring (807), one end of the inclined rod (808) is fixedly connected with the connecting plate (802), a limit through hole (401) is formed in the top surface of the front end of the mounting seat (4), the cross bars (603) is far away from one end of the sliding rod (806) and is fixedly connected with the clamping plate (13) through a clamping plate (13), a fourth spring (14) is connected between the vertical surface at the rear end of the mounting seat (4) and the top surface of the base (3), the drill head (604) and the stabilizing plate (11) are in a triangular position relationship, the stabilizing plate (11) is in a horn shape, and the stabilizing plate (11) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518830.9A CN111636820B (en) | 2020-06-09 | 2020-06-09 | Rotary drilling rig with fixing device with good stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518830.9A CN111636820B (en) | 2020-06-09 | 2020-06-09 | Rotary drilling rig with fixing device with good stability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111636820A CN111636820A (en) | 2020-09-08 |
| CN111636820B true CN111636820B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010518830.9A Active CN111636820B (en) | 2020-06-09 | 2020-06-09 | Rotary drilling rig with fixing device with good stability |
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| Country | Link |
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| CN (1) | CN111636820B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983262B (en) * | 2021-02-26 | 2022-09-09 | 无锡安丰基础工程有限公司 | Pneumatic rotary drilling percussion drill for superhard rock |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135171A (en) * | 2007-08-24 | 2008-03-05 | 王来鹏 | Crawler-type electric rotary digging and drilling machine |
| CN202765120U (en) * | 2012-07-02 | 2013-03-06 | 江苏平汉重工有限公司 | Chassis stabilizing device of rotary drilling machine |
| CN203452659U (en) * | 2013-08-14 | 2014-02-26 | 北京市三一重机有限公司 | Rotary drilling jig |
| CN104975812A (en) * | 2015-07-08 | 2015-10-14 | 上海中联重科桩工机械有限公司 | Rotary drilling rig |
| CN205955652U (en) * | 2016-08-24 | 2017-02-15 | 湖南方运重工科技有限公司 | Dig rig strutting arrangement soon |
| CN108104727A (en) * | 2017-12-30 | 2018-06-01 | 天津市九方煤矿机械制造有限公司 | A kind of Pneumatic power supporting leg type accessory anchor bolt drilling machine |
-
2020
- 2020-06-09 CN CN202010518830.9A patent/CN111636820B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135171A (en) * | 2007-08-24 | 2008-03-05 | 王来鹏 | Crawler-type electric rotary digging and drilling machine |
| CN202765120U (en) * | 2012-07-02 | 2013-03-06 | 江苏平汉重工有限公司 | Chassis stabilizing device of rotary drilling machine |
| CN203452659U (en) * | 2013-08-14 | 2014-02-26 | 北京市三一重机有限公司 | Rotary drilling jig |
| CN104975812A (en) * | 2015-07-08 | 2015-10-14 | 上海中联重科桩工机械有限公司 | Rotary drilling rig |
| CN205955652U (en) * | 2016-08-24 | 2017-02-15 | 湖南方运重工科技有限公司 | Dig rig strutting arrangement soon |
| CN108104727A (en) * | 2017-12-30 | 2018-06-01 | 天津市九方煤矿机械制造有限公司 | A kind of Pneumatic power supporting leg type accessory anchor bolt drilling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111636820A (en) | 2020-09-08 |
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Address after: 114000 No.298 a, Anqian Road, Tiedong District, Anshan City, Liaoning Province Patentee after: Northeast Geotechnical Engineering Survey Co.,Ltd. Country or region after: China Address before: 114001 No.298 a, Anqian Road, Tiedong District, Anshan City, Liaoning Province Patentee before: Northeast Geotechnical Engineering Exploration Corp. Country or region before: China |