CN222184696U - A multifunctional vehicle-mounted hydraulic drilling and repair machine derrick device - Google Patents
A multifunctional vehicle-mounted hydraulic drilling and repair machine derrick device Download PDFInfo
- Publication number
- CN222184696U CN222184696U CN202421378258.0U CN202421378258U CN222184696U CN 222184696 U CN222184696 U CN 222184696U CN 202421378258 U CN202421378258 U CN 202421378258U CN 222184696 U CN222184696 U CN 222184696U
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- lower body
- leg
- derrick
- lifting
- 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.)
- Active
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oil and gas drilling, in particular to a multifunctional vehicle-mounted hydraulic drilling and repairing machine well frame device. The hydraulic support leg is arranged on two sides of a telescopic leg in an external mode, extension and retraction of the hydraulic support leg can be controlled, installation and maintenance are facilitated, a shield capable of synchronously telescoping along with the hydraulic support leg is arranged at the hydraulic support leg, a multi-angle rotary cantilever crane is arranged on the lower body, auxiliary well site hoisting operation is performed, a hose bracket is arranged on the side face of the derrick device, and accordingly working stability and overall transportability of the top driving device are achieved. The hydraulic lifting device mainly comprises a crown block, an upper body, a main hydraulic cylinder, a lower body, telescopic legs, hydraulic support legs, support leg shields, a hose bracket, a lifting hydraulic cylinder and a cantilever crane. The device has the characteristics of safety, reliability, stability, high working efficiency, long service life and high function integration.
Description
Technical Field
The invention relates to the technical field of oil and gas drilling, in particular to a multifunctional vehicle-mounted hydraulic drilling and repairing machine well frame device.
Background
The vehicle-mounted hydraulic drilling and repairing machine is one of important types of oil and gas drilling and repairing equipment, the type of drilling and repairing machine has the characteristics of soft and stable work, quick transportation, modularization, portability and miniaturization, compared with the electric drilling and repairing machine, the vehicle-mounted hydraulic drilling and repairing machine has no explosion proof certification requirement, and gradually obtains the favor of users in recent years along with the increasingly strict well head explosion proof requirement of the country on drilling and repairing wells, has great market potential, and the vehicle-mounted drilling and repairing machine well frame device is one of important equipment of the vehicle-mounted drilling and repairing machine and is mainly used for realizing lifting and lowering of top drive equipment during drilling and repairing operation, the derrick device is in an upright state during equipment work, and the derrick device is in a horizontal state and is transported together with a carrier vehicle during transportation.
The existing vehicle-mounted hydraulic drilling and repairing machine well frame device upper body and lower body are of a single guide wheel guide rail guide structure, a main hydraulic cylinder for driving the upper body to rise and fall and the upper body are not provided with a centralizing device, a driving device of a telescopic leg is realized by adopting a built-in hydraulic supporting leg and external locking mechanical supporting leg structure, a water hose is not provided with a transportation supporting bracket, and the water hose is required to be removed during transportation. According to the analysis, the existing vehicle-mounted hydraulic drilling and repairing machine well frame device has the defects that the well frame device is guided by a single guide wheel guide rail, a main hydraulic cylinder is not righted, the phenomenon of high upper body shaking frequency is easy to occur under high-speed lifting, the service life of the main hydraulic cylinder is greatly reduced, a hydraulic support leg is arranged inside the hydraulic support leg, the installation and the maintenance are inconvenient, the hydraulic support leg is not easy to find when the hydraulic support leg fails, external mechanical support is not provided with protective equipment and is easy to be polluted and corroded by drilling fluid, and a water hose is required to be frequently installed and detached, so that the working efficiency is reduced.
Along with the increasing importance of users on the reliability of drilling and repairing equipment, the design of the vehicle-mounted hydraulic drilling and repairing machine well frame device with safety, stability, reliability, long service life and convenient maintenance is urgently needed to meet the use requirements of the users on the vehicle-mounted hydraulic drilling and repairing machine well frame device.
Disclosure of Invention
The invention aims to provide a multifunctional vehicle-mounted hydraulic drilling and repairing motor-pumped well frame device, wherein a set of stable guiding and righting mechanisms are arranged on the upper body of the derrick device in a lifting and lowering manner, a false rotary table is integrated to the lower body, multi-angle cantilever cranes are arranged on the lower body, protection devices are arranged on two sides of external telescopic legs of hydraulic support legs, a set of hose transportation brackets are arranged, and the safety stability, the working efficiency, the service life of equipment and the multifunctional integration of the vehicle-mounted hydraulic drilling and repairing motor-pumped well frame device are greatly improved.
The technical scheme of the invention is that the multifunctional vehicle-mounted hydraulic drilling and repairing machine well frame device is characterized in that when the vehicle-mounted hydraulic drilling and repairing machine works, lifting and lowering of a top driving device are realized through expansion and contraction of a main hydraulic cylinder arranged in an upper body of the vehicle-mounted hydraulic drilling and repairing machine well frame device, the upper body and a lower body of the vehicle-mounted hydraulic drilling and repairing machine well frame device are of a double-guide-wheel guide rail guide structure, a detachable hoop type righting mechanism is arranged at the lower part of the main hydraulic cylinder, the lifting and lowering stability of the derrick device is kept, a false turntable is integrated on the lower body, load support is provided for hovering of a drill rod, hydraulic support legs are arranged on two sides of telescopic legs in an external mode, the hydraulic support legs can be controlled to extend and retract, installation and maintenance are convenient, a shield which can synchronously extend and retract along with the hydraulic support legs is arranged on the lower body, a hose bracket is arranged on the side of the derrick device to realize the working stability and the whole transportation of the hose of the top driving device, and the vehicle-mounted hydraulic drilling and repairing machine well frame device mainly comprises:
The overhead travelling crane is used for bearing lifting and lowering loads of the derrick, the overhead travelling crane is of a double-pulley structure, pulley rope grooves are in contact with lifting and lowering steel wire ropes, the bottom of the overhead travelling crane is connected with an upper body through bolts, and a middle lug plate at the bottom of the overhead travelling crane is hinged with the main hydraulic cylinder;
The upper body is used for providing a guide path for the lifting and lowering operation of the derrick, the lower guide wheel of the upper body is sleeved on the guide surface of the lower body to be contacted, the guide wheel of the upper body is sleeved on the guide surface of the upper part of the lower body to be contacted, the upper part of the upper body is connected with the crown block through bolts, and the lower part of the upper body is connected with the lower end of the cylinder barrel of the main hydraulic cylinder through a hoop;
The main hydraulic cylinder is used for realizing lifting and lowering operation of the derrick device through the expansion and contraction of the main hydraulic cylinder, the upper part of the main hydraulic cylinder barrel is hinged with the crown block, the lower part of the main hydraulic cylinder barrel is connected with the lower part of the lower body through a hoop, and a piston rod of the main hydraulic cylinder is connected with the lower body through a bolt;
The lower body is used for bearing derrick lifting and lowering loads and providing a guide path for derrick lifting and lowering, a lower body guide rail is sleeved on the surface of a lower guide wheel of the upper body to be contacted with the surface of the upper guide wheel, the lower body is connected with a piston end bolt of a main hydraulic cylinder and a telescopic leg sleeve surface to be contacted, the lower part of the lower body is connected with a hydraulic leg cylinder barrel bolt, and the side surface of the lower body is hinged with a double pin of a hose bracket;
the telescopic legs are used for transmitting the lifting and lowering load of the derrick to the foundation, the telescopic legs are sleeved on the lower part of the lower body and are in surface contact, two sides of each telescopic leg are connected with piston rods of the hydraulic support legs through bolts, and the telescopic legs are hinged with the support leg shields through double pins;
The hydraulic support leg is used for realizing extension and retraction of the telescopic leg, transmitting a derrick lifting and lowering load to the telescopic leg, the hydraulic support leg cylinder barrel is connected with the lower body through bolts, and the hydraulic support leg piston cylinder is connected with the telescopic leg through bolts;
the support leg shield is used for protecting the hydraulic support leg piston cylinder from being polluted by drilling fluid, and is hinged with the telescopic leg double pin;
the water tap bracket is used for supporting the whole water tap for transportation during transportation, and is hinged with the double pins of the lower body of the derrick.
And the lifting hydraulic cylinder is used for realizing that the derrick device is lifted to a vertical working state and is laid down to a horizontal transportation state, one end of the lifting hydraulic cylinder is hinged with the derrick, and the other end of the lifting hydraulic cylinder is hinged with the carrier vehicle.
The cantilever crane is hydraulically or electrically driven and can rotate at multiple angles and is used for assisting in wellhead hoisting operation, and the cantilever crane is connected with the upper end of the lower body through bolts.
The vehicle-mounted hydraulic drilling and repairing motor-pumped well frame device is characterized in that two sides of the lower part of an upper body are provided with detachable double guide wheel devices, guide rails are arranged above the upper body double guide wheel devices, two sides of the upper part of a lower body are provided with detachable double guide wheel devices, guide rails are arranged below the lower body double guide wheel devices, the upper body is sleeved inside the lower body, the upper body double guide wheels are matched with the lower body guide rails, and the lower body double guide wheel devices are matched with the upper body guide rails to form an upper and lower end double guide wheel stable guide structure.
The vehicle-mounted hydraulic drilling and repairing motor-pumped well frame device is characterized in that hydraulic support legs are arranged on two sides of telescopic legs externally, the hydraulic support legs are provided with mechanical locking mechanisms, a hydraulic support leg cylinder barrel is mounted in a lower body lower mounting barrel and connected with telescopic leg bolts, each telescopic leg is provided with a U-shaped coaming shield on the side, close to a wellhead, of each telescopic leg, the range of the shield covers the hydraulic support leg piston rods on two sides of the telescopic leg, the shield covers the stroke of the hydraulic support legs highly, and the lower portion of the shield is hinged to a telescopic leg double-pin shaft.
The vehicle-mounted hydraulic drilling and repairing motor-pumped well frame device is characterized in that a plurality of hose brackets are arranged on the side of a lower body hose, the hose brackets are of a spoon-shaped structure, the connecting end is hinged with the lower body through double pins, and the hose is kept in a spoon-shaped groove of the hose brackets during work and transportation.
The invention has the beneficial effects that:
1. The derrick device lifting and lowering guide mechanism adopts a double-guide-wheel guide rail guide structure, and a righting device is arranged at the lower end of the cylinder barrel of the main hydraulic cylinder, so that the working stability of the derrick device is greatly improved, and the service life of equipment is greatly prolonged.
2. The hydraulic support leg and the mechanical locking mechanism are designed into a whole, so that the integration of equipment is improved, and the installation space is saved.
3. The hydraulic support legs are externally arranged at two sides of the telescopic legs, the installation, the disassembly and the maintenance are convenient.
4. The hydraulic support leg piston rod is provided with a shield, meets the working stroke of the support leg, and can be prevented from being polluted by drilling fluid.
5. The derrick device is provided with the hose bracket, so that the hose and the derrick device can be supported for transportation, the hose is prevented from being installed and disassembled, and the working efficiency is improved.
6. The false rotary table is integrated on the lower body, so that the functional integration of the derrick device is improved, and the load requirement of a drill floor is reduced.
7. The cantilever crane is integrated on the lower body, so that the functional integration of the derrick device is improved, and the occupied space of the cantilever crane on a drill floor is reduced.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic transportation diagram of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
As shown in fig. 1, 2 and 3, the vehicle-mounted hydraulic drilling and repairing machine well frame device has the function of realizing lifting and drill rod lowering operation of top driving equipment by extending and retracting a main hydraulic cylinder arranged in an upper body of the vehicle-mounted hydraulic drilling and repairing machine well frame device, and the device adopts a double-guide-wheel guide rail guide structure, the main hydraulic cylinder is provided with a hoop type righting mechanism, and a transportation bracket is arranged for a water hose, so that the safety and reliability and the overall transportation performance of the vehicle-mounted hydraulic drilling and repairing machine well frame device are improved. The vehicle-mounted hydraulic drilling and repairing machine well frame device comprises a crown block 1, an upper body 2, a main hydraulic cylinder 3, a hose bracket 4 (2), a lower body 5, hydraulic support legs 6 (4), telescopic legs 7 (2), support leg shields 8 (2), lifting hydraulic cylinders 9 (2) and a cantilever crane 10. The crane comprises a crown block 1, an upper body 2, a main hydraulic cylinder 3, a hydraulic support bracket 4 (2), a hydraulic support bracket 6 (4) and a telescopic leg 7 (2), wherein the upper body 2 is sleeved on the guide rail surface of the lower body 5, the upper end of the cylinder barrel of the main hydraulic cylinder 3 is hinged with the crown block 1, the lower end of the cylinder barrel of the main hydraulic cylinder 3 is fixed with the lower body 2 through a detachable anchor ear, the lower end of a piston rod of the main hydraulic cylinder 3 is connected with the lower body 5 through a bolt, the hydraulic support bracket 4 (2) is hinged with the lower body 5 through a double-pin shaft, the cylinder barrel of the hydraulic support bracket 6 (4) is connected with the lower body 5 through a bolt, the piston rod of the hydraulic support bracket 6 (4) is connected with the telescopic leg 7 (2) through a bolt, the telescopic leg 7 (2) is sleeved on the inner surfaces of the two support legs of the lower body 5, one end of a lifting hydraulic cylinder 9 (2) is hinged with the lower body 5, the other end of the lifting cylinder is hinged with the carrier vehicle, the cantilever crane 10 is connected with the upper portion of the lower body 5 through a bolt, one end of a steel wire rope is connected with a top driving device, the middle of the steel wire rope is fixed on the carrier vehicle, the middle of the steel wire rope is contacted with the pulley groove surface of the crown block, the hydraulic support is in a flexible hose, one end is in a flexible hose, and is in threaded connection with the lower body, and the threaded connection with the top driving device.
When the derrick device is in a working state, the lifting hydraulic cylinders 9 (2) extend to push the lower body 5 to rotate so that the vehicle-mounted hydraulic drilling and repairing machine derrick device is vertical, the hydraulic support legs 6 (4) extend to enable the telescopic legs 7 (2) to be in contact with a foundation, the main hydraulic cylinders 3 extend to enable the crown block 1 and the upper body 2 to move up and down so as to enable the top driving device to lift and lower, when the derrick device is in a transportation state, the main hydraulic cylinders 3 retract to enable the crown block 1 and the upper body 2 to be in complete retraction, the hydraulic support legs 6 (4) retract to enable the telescopic legs 7 (2) to be completely retracted, and the lifting hydraulic cylinders 9 (2) retract to enable the lower body 5 to overturn so as to enable the derrick device to be in a horizontal transportation state.
Claims (4)
1. The utility model provides a multi-functional on-vehicle hydraulic pressure bores workover rig well frame device, characterized by is when on-vehicle hydraulic pressure bores workover rig operation, the flexible main hydraulic cylinder of built-in realization top drive equipment's of on-vehicle hydraulic pressure bores workover rig well frame device upper body is promoted and the drilling rod operation of transferring down, this on-vehicle hydraulic pressure bores workover rig well frame device upper body and lower part are double guide pulley guide rail guide structure, main hydraulic cylinder lower part is provided with can dismantle staple bolt formula righting mechanism, keep the stability that derrick device promoted down, the false carousel is integrated to the lower part, provide load support for the drilling rod hovering, the hydraulic leg is external in flexible leg both sides, controllable its stretches out and withdraws, easy to assemble and maintenance, hydraulic leg department is provided with the guard shield that can stretch out and draw back along with the hydraulic leg in step, set up the rotatable cantilever crane of multi-angle on the lower part, supplementary well site hoist operation, be provided with the hose bracket at derrick device side, realize top drive equipment's hose job stabilization and whole transportability, on-vehicle hydraulic pressure bores workover rig well frame device mainly includes:
The overhead travelling crane is used for bearing lifting and lowering loads of the derrick, the overhead travelling crane is of a double-pulley structure, pulley rope grooves are in contact with lifting and lowering steel wire ropes, the bottom of the overhead travelling crane is connected with an upper body through bolts, and a middle lug plate at the bottom of the overhead travelling crane is hinged with the main hydraulic cylinder;
the upper body is used for providing a guide path for lifting and lowering operation of the derrick device, the lower guide wheel of the upper body is sleeved on the guide surface of the lower body to be contacted, the guide wheel of the upper body is sleeved on the guide surface of the upper part of the lower body to be contacted, the upper part of the upper body is connected with the crown block through bolts, and the lower part of the upper body is connected with the lower end of the cylinder barrel of the main hydraulic cylinder through a hoop;
The main hydraulic cylinder realizes derrick lifting and lowering operation through the expansion and contraction of the main hydraulic cylinder, the upper part of the main hydraulic cylinder barrel is hinged with the crown block, the lower part of the main hydraulic cylinder barrel is connected with the lower part of the lower body through a hoop, and a main hydraulic cylinder piston rod is connected with the lower body through a bolt;
The lower body is used for bearing derrick lifting and lowering loads, providing a guide path for derrick lifting and lowering, providing drill rod hovering load support for a lower body drilling platform false turntable, sleeving a lower body guide rail on the surface of an upper body lower guide wheel, sleeving a lower body upper guide wheel on the surface of the upper body guide rail, connecting the lower body with a piston end bolt of a main hydraulic cylinder, sleeving the lower body lower part with a telescopic leg, connecting the lower body lower part with a hydraulic leg cylinder barrel bolt, and hinging the side surface of the lower body with a double pin of a hose bracket;
the telescopic legs are used for transmitting the lifting and lowering load of the derrick to the foundation, the telescopic legs are sleeved on the lower part of the lower body and are in surface contact, two sides of each telescopic leg are connected with piston rods of the hydraulic support legs through bolts, and the telescopic legs are hinged with the support leg shields through double pins;
The hydraulic support leg is used for realizing extension and retraction of the telescopic leg, transmitting a derrick lifting and lowering load to the telescopic leg, the hydraulic support leg cylinder barrel is connected with the lower body through bolts, and the hydraulic support leg piston cylinder is connected with the telescopic leg through bolts;
the support leg shield is used for protecting the hydraulic support leg piston cylinder from being polluted by drilling fluid, and is hinged with the telescopic leg double pin;
The water hose bracket is used for supporting the whole water hose to be transported during transportation, and is hinged with the lower body of the derrick through double pins;
The lifting hydraulic cylinder is used for realizing that the derrick device is lifted to be in a vertical state and is laid down to be in a horizontal transportation state, one end of the lifting hydraulic cylinder is hinged with the derrick, and the other end of the lifting hydraulic cylinder is hinged with the carrier vehicle;
The cantilever crane is hydraulically or electrically driven and can rotate at multiple angles and is used for assisting in wellhead hoisting operation, and the cantilever crane is connected with the upper end of the lower body through bolts.
2. The vehicle-mounted hydraulic drilling and repairing machine well frame device is characterized in that two sides of the lower part of an upper body are provided with detachable double guide wheel devices, guide rails are arranged above the upper body double guide wheel devices, two sides of the upper part of a lower body are provided with detachable double guide wheel devices, guide rails are arranged below the lower body double guide wheel devices, the upper body is sleeved in the lower body, the upper body double guide wheel devices are matched with the lower body guide rails, and the lower body double guide wheel devices are matched with the upper body guide rails to form upper and lower two-end double guide wheel stable guide structures.
3. The vehicle-mounted hydraulic drilling and repairing machine well frame device is characterized in that hydraulic support legs are arranged on two sides of telescopic legs externally, the hydraulic support legs are provided with mechanical locking mechanisms, a hydraulic support leg cylinder barrel is mounted in a lower body mounting barrel and connected with telescopic legs through bolts, a U-shaped coaming shield is arranged on each telescopic leg on the side close to a well head, the range of the shield covers the hydraulic support leg piston rods on two sides of the telescopic legs, the height of the shield covers the travel of the hydraulic support legs, and the lower portion of the shield is hinged with a double pin shaft of the telescopic legs.
4. The vehicle-mounted hydraulic drilling and repairing machine well frame device is characterized in that a plurality of water hose brackets are arranged on the side of a water hose of a lower body, the water hose brackets are of a spoon-shaped structure, the connecting ends of the water hose brackets are hinged with the lower body through double pins, and the water hose is kept in spoon-shaped grooves of the water hose brackets during operation and transportation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421378258.0U CN222184696U (en) | 2024-06-17 | 2024-06-17 | A multifunctional vehicle-mounted hydraulic drilling and repair machine derrick device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421378258.0U CN222184696U (en) | 2024-06-17 | 2024-06-17 | A multifunctional vehicle-mounted hydraulic drilling and repair machine derrick device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222184696U true CN222184696U (en) | 2024-12-17 |
Family
ID=93839469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421378258.0U Active CN222184696U (en) | 2024-06-17 | 2024-06-17 | A multifunctional vehicle-mounted hydraulic drilling and repair machine derrick device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222184696U (en) |
-
2024
- 2024-06-17 CN CN202421378258.0U patent/CN222184696U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5174389A (en) | Carousel well rig | |
| CN103321581B (en) | Inland rig | |
| CA2643310C (en) | Drilling device and drilling method | |
| CN106089079B (en) | Large-section multifunctional hydraulic anchor rod drill carriage | |
| CN118423008A (en) | Multifunctional vehicle-mounted hydraulic drilling and repairing motor-pumped well frame device | |
| CN105507833A (en) | Derrick lifting type coiled tubing operation device | |
| CN105178884A (en) | Lifting and pressing device of truck-mounted drilling rig | |
| CN101598002B (en) | A gantry drilling rig | |
| RU2420646C2 (en) | MOBILE BLOCK-MODULE DRILLING RIG OF HIGH ERECTING CAPACITY AND LIFTING POWER OF 1600, 2000 AND 2250 kN | |
| CN111608591A (en) | A drilling anchor platform with a lifting mechanism | |
| CN205955643U (en) | A large-section multifunctional hydraulic rock bolter | |
| CN105507827A (en) | Lifting oil cylinder type well drilling device | |
| CN210659998U (en) | Wellhead operation platform for coiled tubing operation | |
| CN115711086A (en) | Deep hole core drilling machine | |
| CN222184696U (en) | A multifunctional vehicle-mounted hydraulic drilling and repair machine derrick device | |
| CN119777754A (en) | A belt pressure operation machine capable of switching between Additive and American installation modes and a switching method | |
| CN107401381A (en) | Telescopic derrick steel wire rope system retractor device | |
| CN110219599A (en) | A kind of engineering driller cantilever crane | |
| CN213807579U (en) | Derrick device for four-single upright column drilling machine | |
| CN210087240U (en) | Crawler-type multifunctional mechanical core drilling machine | |
| CN205012942U (en) | Derrick formula coiled tubing centering structure | |
| CN216517834U (en) | Coal mine underground rapid tunneling advanced drilling device | |
| CN110029946B (en) | Installation method of vertical lifting derrick | |
| CN114320172B (en) | Vertical lifting drilling machine and installation method | |
| CN217055049U (en) | Novel full-hydraulic tunnel drilling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |