A drilling tool thread cleaning system for oil drilling

Abstract

The present invention relates to a drilling tool thread cleaning system for oil drilling, comprising: an external thread cleaning device for cleaning external threads, the external thread cleaning device can swing in the horizontal direction, move in the up-down direction, and rotate around the up-down direction to clean the external threads; an oil spraying device for spraying thread oil on the external threads, the oil spraying device is installed at the top of the external thread cleaning device; an internal thread cleaning device for cleaning internal threads, the internal thread cleaning device can move in the up-down direction, and rotate around the up-down direction to clean the internal threads. The present invention can clean the oil stains and impurities on the external threads of the drilling tool through the external thread cleaning device, spray thread oil on the cleaned external threads through the oil spraying device to prevent the threads from sticking when the external threads and the internal threads are matched and affecting the use, and can clean the oil stains and impurities on the internal threads of the drilling tool through the internal thread cleaning device.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical devices for oil and natural gas drilling, and in particular to a drilling tool thread cleaning system for oil drilling. Background Art

[0002] With the improvement of automation level of oil drilling operation, automated drilling tool operation equipment (such as top drive, iron roughneck, drilling table manipulator, etc.) is more and more widely used. During the use and storage of drilling tools, the joint threads often rust and scale. If the rust and scale are not cleaned and the thread oil is not applied in time, the normal use and service life of the drilling tools will be affected.

[0003] At present, the manual cleaning of the drill tool joint threads and the application of thread oil are labor-intensive, the working environment is relatively bad, and the safety risk is high. Therefore, a device that can quickly clean the drill tool joint threads and apply thread oil is needed to improve the automation level of the drill tool operation equipment, improve work efficiency, and reduce the workload of the staff. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a drilling tool thread cleaning system for oil drilling, which solves the technical problem of low automation level in the process of drilling rod cleaning and thread oil application.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0008] A drilling tool thread cleaning system for oil drilling, comprising:

[0009] An external thread cleaning device for cleaning external threads, the external thread cleaning device can swing in the horizontal direction, can move in the up-down direction, and can rotate around the up-down direction to clean the external threads;

[0010] An oil spraying device for spraying thread oil onto the external thread, the oil spraying device being installed at the top end of the external thread cleaning device;

[0011] The invention discloses an internal thread cleaning device for cleaning internal threads, wherein the internal thread cleaning device can move in the up-down direction and can rotate around the up-down direction to clean the internal threads.

[0012] Preferably, it also includes:

[0013] Fixed seat;

[0014] A swing arm used to drive the external thread cleaning device to swing in a horizontal direction;

[0015] A swing cylinder is used to drive the swing arm to rotate in the horizontal direction, wherein the fixed end of the swing cylinder is connected to the fixed seat, and the output end is connected to the swing arm.

[0016] Preferably, it also includes a first telescopic device for driving the external thread cleaning device to move in the up-down direction and a column installed on the swing arm; the column and the first telescopic device both extend in the up-down direction;

[0017] The fixed end of the first telescopic device is connected to the column, and the telescopic end is connected to the external thread cleaning device; the external thread cleaning device is slidably connected to the column.

[0018] Preferably, the external thread cleaning device comprises:

[0019] A first rotating disk capable of rotating in an up-down direction;

[0020] A plurality of external thread cleaning brushes for cleaning external threads are installed on the top of the first rotating disk;

[0021] The multiple external thread cleaning brushes are arranged along the same circumference, the cleaning sides of the multiple external thread cleaning brushes are arranged toward the center line of the first rotating disk, and the multiple external thread cleaning brushes can move radially along the first rotating disk to adapt to the external threads of different diameters.

[0022] Preferably, the first rotating disk is provided with a plurality of first slideways arranged in radial direction;

[0023] A sliding block for fixing the external thread cleaning brush is slidably connected in each of the first slideways in a one-to-one manner, the bottom of the sliding block passes through the first slideway and is slidably connected to at least one sliding rod, the outer end of the sliding rod is connected to the first rotating disk, and a first spring is sleeved on the sliding rod, one end of the first spring abuts against the first rotating disk, and the other end abuts against the sliding block.

[0024] Preferably, it also includes a first lifting seat for accommodating the external thread cleaning device;

[0025] The first lifting seat is slidably connected to the column, and the first lifting seat is connected to the telescopic end of the first telescoping device;

[0026] A first inlet is formed at the top of the first lifting seat, so that the external thread can extend between the plurality of external thread cleaning brushes.

[0027] a first pneumatic motor for driving the first rotating disk to rotate;

[0028] The first pneumatic motor is fixed to the bottom of the first lifting seat, and the output end of the first pneumatic motor is connected to the first rotating disk.

[0029] Preferably, the oil injection device comprises:

[0030] A fixing cylinder installed on the top of the first lifting seat;

[0031] A plurality of oil injection nozzles are arranged along the circumference of the fixed cylinder; the oil injection nozzles are arranged toward the axis of the fixed cylinder.

[0032] Preferably, it also includes a clamp column;

[0033] A second telescopic device for driving the internal thread cleaning device to move in the up and down directions is fixed on the lifting clamp column;

[0034] The internal thread cleaning device comprises:

[0035] A second rotating disk capable of rotating in an up-and-down direction;

[0036] A plurality of internal thread cleaning brushes are used for cleaning the internal threads. The plurality of internal thread cleaning brushes are arranged along the same circumference at the bottom end of the second rotating disk and can move along the radial direction of the second rotating disk to be suitable for the internal threads of different diameters.

[0037] Preferably, a plurality of second slideways are radially provided on the second rotating disk;

[0038] Each of the second slideways is slidably connected in a one-to-one correspondence with a moving block for fixing the internal thread cleaning brush;

[0039] The top end of the moving block passes through the second slideway and is slidably connected to a support rod;

[0040] The outer end of the support rod is connected to the second rotating disk. A second spring is sleeved on the support rod. One end of the second spring abuts against the second rotating disk, and the other end abuts against the moving block.

[0041] Preferably, it also includes a second lifting seat for driving the internal thread cleaning device to move up and down;

[0042] The second lifting seat is slidably connected to the lifting clamp column, and the second lifting seat is connected to the telescopic end of the second telescoping device;

[0043] The second rotating disk and the internal thread cleaning brush are both installed in the second lifting seat;

[0044] A second pneumatic motor is fixedly mounted on the top of the second lifting seat, and an output end of the second pneumatic motor is drivingly connected to the second rotating disk.

[0045] (III) Beneficial effects

[0046] The beneficial effects of the present invention are:

[0047] (1) The present invention can clean the oil stains and impurities on the external threads of the drill tool through the external thread cleaning device, and can spray thread oil on the cleaned external threads through the oil spraying device to prevent the threads from sticking after the external threads and internal threads are matched and affecting the use. The internal thread cleaning device can clean the oil stains and impurities on the internal threads of the drill tool.

[0048] (2) The external thread cleaning device and the internal thread cleaning device of the present invention both utilize centrifugal force and the elastic force of a spring to adjust the positions of the external thread cleaning brush and the internal thread cleaning brush, thereby cleaning external threads and internal threads of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the overall structure of the external thread cleaning mechanism of the present invention;

[0050] Figure 2 It is a structural schematic diagram of the external thread cleaning device of the present invention;

[0051] Figure 3 It is a structural schematic diagram of the oil injection device of the present invention;

[0052] Figure 4 It is a schematic diagram of the overall structure decomposition of the internal thread cleaning mechanism of the present invention.

[0053] [Description of Reference Numerals]

[0054] 11: swing arm; 12: limit rod; 13: first telescopic device; 14: external thread cleaning device; 15: oil injection device; 141: first pneumatic motor; 142: first lifting seat; 143: first rotating disk; 144: sliding rod; 145: first spring; 146: sliding block; 147: first slideway; 148: external thread cleaning brush; 149: pin shaft; 1410: third spring; 151: fixed cylinder; 152: oil injection nozzle; 153: photoelectric switch; 154: oil injection switch; 155: pneumatic solenoid valve; 21: second telescopic device; 22: second lifting seat; 23: second pneumatic motor; 24: second rotating disk; 25: moving block; 26: support rod; 27: second spring; 28: internal thread cleaning brush; 29: lifting clamp; 210: lifting clamp column. DETAILED DESCRIPTION

[0055] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0056] Example

[0057] like Figure 1 and 4 As shown, a drilling tool thread cleaning system for oil drilling includes an external thread cleaning mechanism and an internal thread cleaning mechanism. The external thread cleaning mechanism includes an external thread cleaning device 14 for cleaning the external thread; the external thread cleaning device 14 can swing in the horizontal direction, move in the up-down direction, and rotate around the up-down direction to clean the external thread; an oil spraying device 15 for spraying thread oil on the external thread; the oil spraying device 15 is installed at the top of the external thread cleaning device 14; the internal thread cleaning mechanism includes an internal thread cleaning device for cleaning the internal thread; the internal thread cleaning device can move in the up-down direction, and rotate around the up-down direction to clean the internal thread.

[0058] The present invention can clean the oil stains and impurities on the external threads of the drill tool through the external thread cleaning device 14, and can spray thread oil on the cleaned external threads through the oil spraying device 15 to prevent them from rusting and affecting their use. The internal thread cleaning device can clean the oil stains and impurities on the internal threads of the drill tool.

[0059] In this embodiment, when in use, the external thread cleaning mechanism is fixed to the translation mechanism of the drilling table manipulator, and can move with the translation mechanism of the drilling table manipulator to approach or move away from the external thread to be cleaned. The internal thread cleaning mechanism is fixed to the clamp telescopic mechanism of the second-floor manipulator, and the internal thread to be cleaned can be fixed by the clamp. Of course, the external thread cleaning mechanism and the internal thread cleaning mechanism in the present invention are not limited to being installed on different devices respectively, but can also be integrated on the same device.

[0060] like Figure 1 As shown, it further includes: a fixed seat; a swing arm 11 for driving the external thread cleaning device 14 to swing in the horizontal direction; a swing cylinder for driving the swing arm 11 to rotate in the horizontal direction; the fixed end of the swing cylinder is connected to the fixed seat, and the output end is connected to the swing arm 11. The swing cylinder drives the swing arm 11 to swing in the horizontal direction, so that the external thread cleaning device 14 swings in the horizontal direction.

[0061] In this embodiment, limit rods 12 are further installed on both sides of the swing arm 11 to limit the swing angle of the swing arm 11 to prevent the swing angle from being too large and affecting the normal operation of other devices. The fixed end of the limit rod 12 is connected to the fixed seat, and the limit end is arranged toward the swing arm 11.

[0062] like Figure 1As shown, in this embodiment, the external thread cleaning mechanism also includes a moving device for driving the external thread cleaning device 14 to move in the up and down direction; the moving device is installed on the swing arm 11; the moving device includes: a column and a first telescopic device 13 installed on the swing arm 11; the column and the first telescopic device 13 both extend in the up and down direction; the external thread cleaning device 14 is slidably connected to the column; the fixed end of the first telescopic device 13 is connected to the column, and the telescopic end is connected to the external thread cleaning device 14. The external thread cleaning device 14 is driven to move up and down by the telescopic movement of the first telescopic device 13, so that the external thread can be cleaned.

[0063] In this embodiment, the first telescopic device 13 is a cylinder. Of course, the first telescopic device 13 of the present invention is not limited to the structure of a cylinder. In other embodiments of the present invention, the first telescopic device 13 can also be a cylinder or a screw nut structure, or other structures that can move up and down.

[0064] like Figure 2 As shown, specifically, the external thread cleaning device 14 includes: a first rotating disk 143 that can rotate in the up and down directions; a plurality of external thread cleaning brushes 148 for cleaning the external threads are installed on the top of the first rotating disk 143, and the plurality of external thread cleaning brushes 148 are located on the same circumference, and the plurality of external thread cleaning brushes 148 can move radially along the first rotating disk 143 to adapt to external threads of different diameters, and the cleaning sides of the plurality of external thread cleaning brushes 148 are arranged toward the center line of the first rotating disk 143.

[0065] like Figure 2 As shown, further, a plurality of first slideways 147 arranged radially are provided on the first rotating disk 143; each first slideway 147 is slidably connected with a sliding block 146 for fixing an external thread cleaning brush 148, and the bottom of the sliding block 146 passes through the first slideway 147 and is slidably connected to at least one sliding rod 144, the outer end of the sliding rod 144 is connected to the first rotating disk 143, and a first spring 145 is sleeved on the sliding rod 144, one end of the first spring 145 abuts against the first rotating disk 143, and the other end abuts against the sliding block 146. The first rotating disk 143 rotates, driving the sliding block 146, the external thread cleaning brush 148, the sliding rod 144 and the first spring 145 to rotate synchronously. Under the action of centrifugal force, the sliding block 146 and the external thread cleaning brush 148 compress the spring and move along the first slideway 147 away from the center of the first rotating disk 143. The rotation speed of the first rotating disk 143 is different, and the centrifugal force exerted on the sliding block 146 and the external thread cleaning brush 148 is different. Multiple external thread cleaning brushes 148 are located on different circumferences, thereby realizing the cleaning of external threads of different diameters.

[0066] In this embodiment, there are two sliding rods 144, which are respectively located on both sides of the first slideway 147. The sliding block 146 is connected to the external thread cleaning brush 148 through a pin shaft 149 to facilitate disassembly and assembly.

[0067] like Figure 1 and 2 As shown, the external thread cleaning mechanism also includes a first lifting seat 142 for accommodating the external thread cleaning device 14; the first lifting seat 142 is slidably connected to the column, and the first lifting seat 142 is connected to the telescopic end of the first telescope 13; the first rotating disk 143 and the external thread cleaning brush 148 are both installed in the first lifting seat 142; a first pneumatic motor 141 is used to drive the first rotating disk 143 to rotate; the first pneumatic motor 141 is fixed to the bottom of the first lifting seat 142, and the output end of the first pneumatic motor 141 is connected to the first rotating disk 143. The first telescope 13 drives the first lifting seat 142 to move up and down, thereby driving the external thread cleaning device 14 to move up and down, so that the external thread cleaning device 14 is close to or away from the external thread to be cleaned.

[0068] In this embodiment, a third spring 1410 is sleeved on the output shaft of the first pneumatic motor 141, and the top end of the third spring 1410 abuts against the bottom end of the first rotating disk 143. When the external thread extends into the first lifting seat 142, the third spring 1410 can have a buffering effect on the first rotating disk 143, thereby reducing the impact of the bottom end of the external thread on the first rotating disk 143 and extending its service life.

[0069] like Figure 1 and 3 As shown, the oil spraying device 15 comprises: a fixed cylinder 151 installed at the top of the first lifting seat 142; a plurality of oil spraying nozzles 152 arranged along the circumference of the fixed cylinder 151; and a plurality of oil spraying nozzles 152 arranged toward the axis of the fixed cylinder 151. The oil spraying nozzles 152 are used to spray thread oil onto the external threads to prevent them from rusting and affecting normal use.

[0070] In this embodiment, the plurality of fuel injection nozzles 152 are evenly distributed on the fixing tube 151 .

[0071] In this embodiment, the top of the fixed cylinder 151 is a conical structure, and the large end is located above the small end. When the external thread needs to be cleaned, the external thread device 14 moves up to allow the external thread to extend into the fixed cylinder 151. However, due to positioning errors, the external thread may touch the fixed cylinder 151. The conical structure can guide the external thread so that the external thread can enter the first lifting seat 142.

[0072] like Figure 3As shown, in this embodiment, a photoelectric switch 153 is further provided on the outside of the fixed cylinder 151. The signal transmitting end and the signal receiving end of the photoelectric switch 153 are respectively placed on both sides of the fixed cylinder 151 and are telescoped into the fixed cylinder 151. When the external thread extends into the fixed cylinder 151, the external thread separates the signal transmitting end and the signal receiving end of the photoelectric switch, and the signal receiving end cannot receive the signal sent by the signal transmitting end. When the height of the external thread corresponds to the height of the fuel injector 152, the fuel injector 152 starts to spray fuel.

[0073] In this embodiment, it also includes an injection switch 154 connected to the oil inlet joint of the injection nozzle 152 through a pipeline, and a pneumatic solenoid valve 155 connected to the air inlet joint of the injection nozzle 152 through a pipeline.

[0074] like Figure 4 As shown, it also includes a clamp column; a second telescopic device 21 for driving the internal thread cleaning device to move in the up and down directions is fixed on the clamp column. The internal thread cleaning device includes:

[0075] A second rotating disk 24 capable of rotating in an up-and-down direction; a plurality of internal thread cleaning brushes 28 for cleaning internal threads; a plurality of internal thread cleaning brushes 28 are arranged at the bottom of the second rotating disk 24 along the same circumference, and can move radially along the second rotating disk 24 to be suitable for internal threads of different diameters. The internal thread cleaning device is driven to move up and down by the second telescopic device 21, so that the internal thread cleaning device is away from or close to the internal thread, and the plurality of internal thread cleaning brushes 28 are driven to rotate synchronously by the second rotating disk 24. Under the action of centrifugal force, the internal thread cleaning brushes 28 move radially away from the center of the second rotating disk 24. The greater the rotation speed of the second rotating disk 24, the greater its centrifugal force. When the second rotating disk 24 rotates, the internal thread cleaning brushes 28 are farther from the center of the second rotating disk 24. That is, by adjusting the rotation speed of the second rotating disk 24, the circumference formed by the plurality of internal thread cleaning brushes 28 can be adjusted. When cleaning the internal thread, internal threads of various diameters can be cleaned.

[0076] In this embodiment, a tong 29 for fixing the internal thread is installed at the bottom of the tong column 210 .

[0077] like Figure 4As shown, a plurality of second slideways are radially provided on the second rotating disk 24; each second slideway is slidably connected to a moving block 25 for fixing an internal thread cleaning brush 28; the top of the moving block 25 passes through the second slideway and is slidably connected to a support rod 26; the outer end of the support rod 26 is connected to the second rotating disk 24, and a second spring 27 is sleeved on the support rod 26, one end of the second spring 27 abuts against the second rotating disk 24, and the other end abuts against the moving block 25. As the second rotating disk 24 rotates, under the action of centrifugal force, the moving block 25 drives the internal thread cleaning brush 28 to move along the radial second slideway away from the center of the second rotating disk 24, so that the plurality of internal thread cleaning brushes 28 can clean the internal threads.

[0078] like Figure 4 As shown, the internal thread cleaning mechanism also includes a second lifting seat 22 for driving the internal thread cleaning device to move up and down; the second lifting seat 22 is slidably connected to the clamp column 210, and the second lifting seat 22 is connected to the telescopic end of the second telescope 21; the second rotating disk 24 and the internal thread cleaning brush 28 are both installed in the second lifting seat 22; the second pneumatic motor 23 is fixedly installed on the top of the second lifting seat 22, and the output end of the second pneumatic motor 23 is transmission-connected to the second rotating disk 24. When in use, the second telescope 21 drives the second lifting seat 22 to move up and down, so that the internal thread can extend into the second lifting seat 22 or move away from the second lifting seat 22.

[0079] When the present invention is used and the external thread needs to be cleaned, the first pneumatic motor 141 drives the first rotating disk 143 to rotate. Under the action of centrifugal force, the external thread cleaning brush 148 moves radially away from the center of the first rotating disk 143, and the swing cylinder drives the swing arm 11 to swing in the horizontal direction, so that the external thread cleaning device 14 swings in the horizontal direction. The external thread cleaning device 14 is driven to move upward through the extension of the first telescopic device 13, so that the external thread extends into the first lifting seat 142, and the rotation speed of the first rotating disk 143 is adjusted so that the external thread cleaning brush 148 can clean the external thread. At the same time, after the external thread extends into the first lifting seat 142, the external thread separates the signal transmitting end and the signal receiving end of the photoelectric switch, and the signal receiving end cannot receive the signal sent by the signal transmitting end. When the height of the external thread corresponds to the height of the oil injector 152, the oil injector 152 starts to spray oil.

[0080] When the internal thread needs to be cleaned, the internal thread cleaning device is driven downward by the second telescopic device 21 to allow the internal thread to extend into the second lifting seat 22, and the second rotating disk 24 rotates. Under the action of centrifugal force, the moving block 25 drives the internal thread cleaning brush 28 to move along the radial second slideway away from the center of the second rotating disk 24, so that multiple internal thread cleaning brushes 28 can clean the internal thread.

[0081] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0082] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0084] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0085] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drilling tool thread cleaning system for oil drilling, characterized in that: include: An external thread cleaning device (14) for cleaning external threads, the external thread cleaning device (14) being capable of swinging in a horizontal direction, being capable of moving in an up-down direction, and being capable of rotating about an up-down direction, so as to clean the external threads; An oil spraying device (15) for spraying thread oil onto the external thread, the oil spraying device (15) being installed at the top end of the external thread cleaning device (14); An internal thread cleaning device for cleaning the internal thread, the internal thread cleaning device can move in the up and down direction and can rotate around the up and down direction to clean the internal thread; The external thread cleaning device (14) comprises: A first rotating disk (143) capable of rotating in an up-down direction; A plurality of external thread cleaning brushes (148) for cleaning external threads are mounted on the top of the first rotating disk (143); The multiple external thread cleaning brushes (148) are arranged along the same circumference, the cleaning sides of the multiple external thread cleaning brushes (148) are arranged toward the center line of the first rotating disk (143), and the multiple external thread cleaning brushes (148) are movable along the radial direction of the first rotating disk (143) to adapt to external threads of different diameters; Also included are clamp columns; A second telescopic device (21) is fixed on the lifting clamp column and is used to drive the internal thread cleaning device to move in the up and down direction; The internal thread cleaning device comprises: A second rotating disk (24) capable of rotating in an up-down direction; A plurality of internal thread cleaning brushes (28) for cleaning internal threads, wherein the plurality of internal thread cleaning brushes (28) are arranged along the same circumference at the bottom end of the second rotating disk (24) and are movable along the radial direction of the second rotating disk (24) to be suitable for internal threads of different diameters.

2. The thread cleaning system for oil drilling according to claim 1, characterized in that: Also includes: Fixed seat; A swing arm (11) for driving the external thread cleaning device (14) to swing in a horizontal direction; A swing cylinder for driving the swing arm (11) to rotate in a horizontal direction, wherein the fixed end of the swing cylinder is connected to the fixed seat, and the output end is connected to the swing arm (11).

3. The drilling tool thread cleaning system for oil drilling according to claim 2, characterized in that: It also includes a first telescopic device (13) for driving the external thread cleaning device (14) to move in the up-down direction and a column mounted on the swing arm (11); the column and the first telescopic device (13) both extend in the up-down direction; The fixed end of the first telescopic device (13) is connected to the column, and the telescopic end is connected to the external thread cleaning device (14); the external thread cleaning device (14) is slidably connected to the column.

4. The drilling tool thread cleaning system for oil drilling according to claim 3, characterized in that: The first rotating disk (143) is provided with a plurality of first slideways (147) arranged in a radial direction; A sliding block (146) for fixing the external thread cleaning brush (148) is slidably connected in a one-to-one manner in each of the first slideways (147); the bottom of the sliding block (146) passes through the first slideway (147) and is slidably connected to at least one sliding rod (144); the outer end of the sliding rod (144) is connected to the first rotating disk (143); a first spring (145) is sleeved on the sliding rod (144); one end of the first spring (145) abuts against the first rotating disk (143), and the other end abuts against the sliding block (146).

5. The drilling tool thread cleaning system for oil drilling according to claim 4, characterized in that: It also includes a first lifting seat (142) for accommodating the external thread cleaning device (14); The first lifting seat (142) is slidably connected to the column, and the first lifting seat (142) is connected to the telescopic end of the first telescoping device (13); A first inlet is formed at the top of the first lifting seat (142) to allow the external thread to extend between the plurality of external thread cleaning brushes (148); A first pneumatic motor (141) for driving the first rotating disk (143) to rotate; The first pneumatic motor (141) is fixed to the bottom of the first lifting seat (142), and the output end of the first pneumatic motor (141) is connected to the first rotating disk (143).

6. The drilling tool thread cleaning system for oil drilling according to claim 5, characterized in that: The oil injection device (15) comprises: A fixing cylinder (151) installed on the top end of the first lifting seat (142); A plurality of oil injection nozzles (152) are arranged along the circumference of the fixed cylinder (151); the oil injection nozzles (152) are arranged toward the axis of the fixed cylinder (151).

7. The drilling tool thread cleaning system for oil drilling according to claim 1, characterized in that: A plurality of second slideways are radially provided on the second rotating disk (24); Each of the second slideways is slidably connected in a one-to-one correspondence with a moving block (25) for fixing the internal thread cleaning brush (28); The top end of the moving block (25) passes through the second slideway and is slidably connected to a support rod (26); The outer end of the support rod (26) is connected to the second rotating disk (24), and a second spring (27) is sleeved on the support rod (26). One end of the second spring (27) abuts against the second rotating disk (24), and the other end abuts against the moving block (25).

8. The drilling tool thread cleaning system for oil drilling according to claim 7, characterized in that: It also includes a second lifting seat (22) for driving the internal thread cleaning device to move up and down; The second lifting seat (22) is slidably connected to the lifting clamp column, and the second lifting seat (22) is connected to the telescopic end of the second telescoping device (21); The second rotating disk (24) and the internal thread cleaning brush (28) are both installed in the second lifting seat (22); A second pneumatic motor (23) is fixedly mounted on the top of the second lifting seat (22), and an output end of the second pneumatic motor (23) is drivingly connected to the second rotating disk (24).

Images