阅读说明：本技术 一种rov搭载的海底钻机 (Submarine drilling rig carried by ROV ) 是由 宋殿兰 魏照宇 刘广治 陈宗恒 田烈余 卢猛 苏兴涛 王福海 郭强 冉灵杰 祝强 于 2019-11-21 设计创作，主要内容包括：本发明公开了一种ROV搭载的海底钻机,它包括动力装置、外壳(5)、主轴(11),其特征在于：所述动力装置通过齿轮与主轴(11)连接,所述动力装置与外壳(5)连接,所述外壳(5)上方设置有缓冲立柱(4),所述缓冲立柱(4)上部的芯轴上放置有缓冲弹簧(3),所述缓冲立柱(4)上部设有可沿芯轴上下运动的上横梁(1),所述缓冲弹簧(3)的上端抵在上横梁(1)的底部,所述上横梁(1)的中部与ROV给进油缸连接。本发明具有体积小、重量轻、成本低、能有效避免卡钻、能承受更大压力、适于ROV搭载等优点。(The invention discloses a submarine drilling rig carried by an ROV (remote operated vehicle), which comprises a power device, a shell (5) and a main shaft (11), and is characterized in that: the power device is connected with the main shaft (11) through a gear, the power device is connected with the shell (5), the buffer upright post (4) is arranged above the shell (5), the buffer spring (3) is placed on the mandrel on the upper portion of the buffer upright post (4), the upper portion of the buffer upright post (4) is provided with the upper cross beam (1) capable of moving up and down along the mandrel, the upper end of the buffer spring (3) supports the bottom of the upper cross beam (1), and the middle of the upper cross beam (1) is connected with the ROV feeding oil cylinder. The invention has the advantages of small volume, light weight, low cost, effective prevention of drill jamming, capability of bearing larger pressure, suitability for ROV carrying and the like.)

1. The utility model provides a submarine drilling rig that ROV carried on, it includes power device, shell (5), main shaft (11), its characterized in that: the power device is connected with the main shaft (11) through a gear, the power device is connected with the shell (5), the buffer upright post (4) is arranged above the shell (5), the buffer spring (3) is placed on the mandrel on the upper portion of the buffer upright post (4), the upper portion of the buffer upright post (4) is provided with the upper cross beam (1) capable of moving up and down along the mandrel, the upper end of the buffer spring (3) supports the bottom of the upper cross beam (1), and the middle of the upper cross beam (1) is connected with the ROV feeding oil cylinder.

2. An ROV-mounted seafloor drilling rig according to claim 1, wherein: the power device comprises a hydraulic motor a (2) and a hydraulic motor b (7).

3. An ROV-mounted seafloor drilling rig according to claim 2, wherein: the hydraulic motor a (2) is connected with a spline shaft a (8) through a spline, the spline shaft a (8) is connected with a gear a (9) through a flat key, the hydraulic motor b (7) is connected with a spline shaft b (13) through a spline, the spline shaft b (13) is connected with a gear b (12) through a flat key, the spline shaft a (8) and the spline shaft b (13) are connected with the shell (5) through bearings, the gear a (9) and the gear b (12) are meshed with a gear c (10), and the gear c (10) is connected with a main shaft (11) through a flat key.

4. An ROV-mounted seafloor drilling rig according to claim 1, wherein: the shell (5) is connected with a pressure compensator (6), and the interior of the pressure compensator (6) is communicated with the interior of the shell (5).

5. An ROV-mounted seafloor drilling rig according to claim 4, wherein: the shell (5) is connected with the pressure compensator (6) through bolts, the connection surface of the shell (5) and the pressure compensator (6) is sealed through a sealing ring, and a piston is arranged inside the pressure compensator (6).

6. An ROV-mounted seafloor drilling rig according to claim 1, wherein: the shell (5) is connected with the buffering upright columns (4) through bolts, and at least two buffering upright columns (4) are symmetrically arranged.

7. An ROV-mounted seafloor drilling rig according to claim 1, wherein: the lower part of the upper cross beam (1) is provided with a sleeve matched with a mandrel at the upper part of the buffer upright post (4).

8. An ROV-mounted seafloor drilling rig according to claim 1, wherein: the upper cross beam (1) is connected with a connecting flange on the ROV feeding oil cylinder through a bolt.

Technical Field

The invention relates to the field of submarine drilling equipment, in particular to a submarine drilling rig carried by an ROV.

Background

The vast ocean bottom contains abundant mineral resources, and has great economic value and strategic significance. Deep sea is one of the few unknown regions of the earth, and scientists have a great interest in deep sea mineral composition, mineral age, mineral formation mechanism, physical and chemical properties of minerals, and biological and environmental conditions around minerals. These studies, which cover multiple disciplines of marine geology, marine life, marine chemistry, marine physics, marine prospecting, marine mining, all require large samples of deep sea minerals. Therefore, the acquisition of deep sea mineral core samples plays a crucial role in the research of marine science and the exploration and development of submarine mineral resources.

The operating environment of the seabed is severe, the drilling machine needs to bear high pressure, the underwater mass load distribution requirement of an ROV (underwater robot) is very strict, and the drilling machine is required to have light mass and simultaneously ensure good high pressure resistance and sealing performance. This causes considerable difficulties in the design of the drilling machine. In addition, the complicated and changeable rock stratum in the seabed enables drilling accidents to occur easily during drilling, and great potential safety hazards are brought to the remote control underwater robot. Therefore, the drilling machine must be designed with corresponding measures to ensure the safety of the remote control underwater robot in the deep sea. The existing deep sea drilling machine is complex in structure, large in size and heavy in weight, and is not suitable for being carried on a remote control underwater robot.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a submarine drilling rig which is small in size, light in weight, low in cost, capable of effectively avoiding drill clamping and bearing higher pressure and suitable for ROV carrying.

In order to solve the technical problems, the invention adopts the following technical scheme:

a submarine drilling rig carried by an ROV (remote operated vehicle) comprises a power device, a shell 5 and a main shaft 11, and is characterized in that: the power device is connected with the main shaft 11 through a gear, the main shaft 11 is driven to drive a drill bit to drill through the power device, the power device is connected with the shell 5 and plays a role of providing rotating torque for the main shaft of the drilling machine, the buffering upright post 4 is arranged above the shell 5, the buffering spring 3 is placed on the mandrel on the upper portion of the buffering upright post 4, the upper portion of the buffering upright post 4 is provided with the upper cross beam 1 capable of moving up and down along the mandrel, the upper end of the buffering spring 3 abuts against the bottom of the upper cross beam 1, the drilling machine is buffered in the feeding process, and the middle of the upper cross beam 1 is connected with the ROV feeding oil cylinder so as to load the drilling machine on the ROV and obtain feeding power simultaneously.

As a further improvement of the technical scheme:

the power device comprises a hydraulic motor a2 and a hydraulic motor b7 and provides rotary power for the main shaft of the drilling machine.

The hydraulic motor a2 is connected with a spline shaft a8 through a spline, the spline shaft a8 is connected with a gear a9 through a flat key, the hydraulic motor b7 is connected with a spline shaft b13 through a spline, the spline shaft b13 is connected with a gear b12 through a flat key, the spline shaft a8 and the spline shaft b13 are connected with the shell 5 through bearings, the gear a9 and the gear b12 are meshed with the gear c10, and the gear c10 is connected with the main shaft 11 through a flat key, so that the drilling machine can realize normal drilling and has the capacity of reversely operating to disconnect the threads connecting the drilling tool and the main shaft 11 and further completing disconnection.

The housing 5 is connected to a pressure compensator 6, and the inside of the pressure compensator 6 communicates with the inside of the housing 5 so that the pressure compensator 6 performs pressure regulation.

The shell 5 passes through bolted connection with pressure compensator 6, shell 5 passes through the sealing washer with pressure compensator 6 is connected the face and seals to guarantee sealing performance, the inside piston that is equipped with of pressure compensator 6, the piston moves along with water pressure change, has compensated lubricating oil because of the volume that the high water pressure compressed, with the internal and external pressure balance of realization.

The shell 5 is connected with the buffering upright post 4 through bolts, and the buffering upright post 4 is symmetrically provided with at least two.

The lower part of the upper crossbeam 1 is provided with a sleeve matched with the mandrel at the upper part of the buffer upright post 4.

The upper cross beam 1 is connected with a connecting flange on an ROV feeding oil cylinder through a bolt.

Compared with the prior art, the invention has the advantages that:

the volume is small, the weight is light, the cost is low, the drill sticking accident can be effectively treated, and the device can bear higher water pressure. Compared with the prior art, the technology uses the buffer upright post 4 and the buffer spring 3 to form the buffer mechanism, so that the buffering of the drilling machine can be realized in the feeding process, and the drill bit blocking accident caused by the mismatching of the feeding speed and the rock cutting speed of the drill bit is avoided; the design of the power device can be used for tripping in case that the drill bit is stuck so as to ensure that the ROV cannot be fixed to the seabed due to the accident of sticking the drill bit, and the power device plays an extremely important role in ensuring the safety of the ROV and greatly reduces the equipment loss; in addition, the drilling machine can bear larger water pressure through the pressure compensator 6 and work in a deeper water area; and the volume is small, the weight is light, the load of the ROV is reduced, or the ROV is carried on a smaller ROV, and the manufacturing cost is lower than that of the prior art.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a schematic view of the ROV-mounted subsea drilling rig of the present invention.

In the figure: 1-upper beam, 2-hydraulic motor a, 3-buffer spring, 4-buffer upright post, 5-shell, 6-pressure compensator, 7-hydraulic motor b, 8-spline shaft a, 9-gear a, 10-gear c, 11-main shaft, 12-gear b, 13-spline shaft b.

Detailed Description

The present invention will be described in further detail below with reference to specific drawings and examples.