CN111720089A - Positioning mechanism, fishing device and fishing method for drill bit fishing - Google Patents
Positioning mechanism, fishing device and fishing method for drill bit fishing Download PDFInfo
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- CN111720089A CN111720089A CN202010622550.2A CN202010622550A CN111720089A CN 111720089 A CN111720089 A CN 111720089A CN 202010622550 A CN202010622550 A CN 202010622550A CN 111720089 A CN111720089 A CN 111720089A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 230000003137 locomotive effect Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 210000000078 claw Anatomy 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a positioning mechanism for salvaging a drill bit, which comprises a straight cylinder, wherein a pin shaft positioning mechanism is fixedly arranged on the inner side of the bottom of the straight cylinder; the pin shaft positioning mechanism comprises a plurality of sector plates which are distributed in a central symmetry manner, so that the middle of each sector plate is enclosed into a circular positioning area for the end part of a drill to pass through; a pin shaft which can movably extend out is inserted in any one of the fan-shaped plates. The invention also discloses a salvaging device and a salvaging method of the drill bit, which comprise a locomotive and an upright post for hoisting the positioning mechanism, wherein the upright post is hoisted with a power driving platform through a steel cable. Fishing device can replace the ghost to accomplish with drill bit automatic connection's in the pit work, and positioning mechanism fixed mounting is difficult for rocking in power drive platform below, finely tunes the size around the stand of equipment, and the positioning mechanism of being convenient for aims at the otic placode hole, and power drive platform is just anti-60 rotatory, avoids exporting hydraulic pressure pipe winding together, can splice between the protective barrel, the transportation of being convenient for.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a positioning mechanism, a fishing device and a fishing method for fishing a drill bit.
Background
With the higher and higher requirements of railway and highway construction, the occupied proportion of the bridge in the railway and highway construction is larger and larger, and the construction speed of various bridges is higher and higher. The construction of a pile driver drill bit is very common in the bridge pile foundation construction, and accordingly, drill jamming accidents of a drilling machine frequently occur in the construction process due to mechanical or artificial reasons and the like. And the conventional treatment method is to employ a diver to submerge to the position where the drill bit falls and manually wear and hang a steel wire rope to take the drill bit back. The method has the defects of long construction period and high danger, workers need to submerge into slurry for manual fishing for dozens of meters, are dangerous to life, have high death rate and are easy to leave sequelae even if tasks are finished. Therefore, a positioning mechanism, a fishing device and a fishing method for fishing the drill bit are provided for solving the problems.
Disclosure of Invention
The invention aims to provide a positioning mechanism, a fishing device and a fishing method for fishing a drill bit, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a positioning mechanism for salvaging a drill bit comprises a combined splicing type straight cylinder extending into a well,
a pin shaft positioning mechanism is fixedly arranged on the inner side of the bottom of the straight cylinder;
the pin shaft positioning mechanism comprises a plurality of sector plates which are distributed in a central symmetry manner, so that the middle of each sector plate is enclosed into a circular positioning area for the end part of a drill to pass through;
a pin shaft sliding cavity with an opening at one end is horizontally arranged in any one of the sector plates, a pin shaft which can movably extend out is inserted in the pin shaft sliding cavity, the outer end part of the pin shaft penetrates through the opening and extends towards the direction of the other adjacent sector plate, and the side surface of the other sector plate is provided with a concave pin shaft mounting hole corresponding to the end part of the pin shaft;
the inner end part of the pin shaft is matched with the inner part of the pin shaft sliding cavity, and the tops of two sides of the pin shaft sliding cavity are respectively communicated with a first output hydraulic pipe and a second output hydraulic pipe;
and the first output hydraulic pipe and the second output hydraulic pipe respectively inject hydraulic oil to the pin shaft sliding cavity alternately and push the pin shaft to slide in the pin shaft sliding cavity.
Preferably, the straight cylinder is formed by coaxially splicing at least one protective cylinder and a bottom sleeve, an outer convex part which is parallel to the outer surface of the protective cylinder and extends out is arranged at the bottom of the protective cylinder, an inner convex part which is parallel to the inner surface of the bottom sleeve and extends out is arranged at the top of the bottom sleeve, and the outer convex part and the inner convex part are fixedly connected through screws.
Preferably, the outer side of the bottom sleeve is fixedly sleeved with an installation ring, a plurality of centralizing wheels are installed on the installation ring in a centrosymmetric mode, the centralizing wheels are in contact with the well wall, and the rolling direction of the centralizing wheels is parallel to the axis of the bottom sleeve.
Preferably, the sector plate is located at the inner side of the bottom sleeve, a conical sleeve is installed at the top of the sector plate, the large opening end of the conical sleeve faces the sector plate, and bulges on the surface of the cambered surface are uniformly arranged on the inner side wall of the conical sleeve.
Preferably, a sealing sleeve is fixedly arranged on an opening of the pin shaft sliding cavity, and the sealing sleeve is sleeved on the pin shaft.
Preferably, any one pin shaft sliding cavity is communicated with a first output hydraulic pipe and a second output hydraulic pipe, all the first output hydraulic pipes extend towards the upper part of the protective cylinder and are simultaneously communicated with the bottom of the first pipeline joint, and the top of the first pipeline joint is communicated with the first hydraulic pipe; all second output hydraulic pipes extend above the pile casing and are simultaneously communicated with the bottom of a second pipeline connector, the top of the second pipeline connector is communicated with a second hydraulic pipe, and the first pipeline connector and the second pipeline connector are coaxially arranged on the top of the pile casing.
Preferably, the first hydraulic pipe and the second hydraulic pipe are respectively connected with two output ends of the electromagnetic directional valve, the input end of the electromagnetic directional valve is communicated with the hydraulic pump, and the input end of the hydraulic pump is communicated with the hydraulic tank filled with hydraulic oil.
A salvaging device of a drill bit comprises a locomotive and a stand column for hoisting a positioning mechanism, wherein a power driving platform is hoisted on the stand column through a steel cable;
the power driving platform comprises a cylindrical platform with an opening at the bottom, a sliding claw is fixedly arranged on one side of the cylindrical platform, and the sliding claw is clamped on a guide sliding rail on the surface of the upright column in a tile-holding manner;
the cylindrical platform is characterized in that the bottom of the cylindrical platform is fixedly connected with an inner ring of the external tooth slewing bearing, an outer ring of the external tooth slewing bearing is fixedly connected with the top of the straight cylinder through a bolt, an installation plate extends outwards from the cylindrical platform, a gear driven by a motor is rotatably installed on the installation plate, and the gear is meshed with the outer ring of the external tooth slewing bearing.
Preferably, the bottom of the upright post is hinged to the outer end of a mounting platform on the locomotive;
the middle part of the upright post is hinged with one end of an inclined support hydraulic cylinder, and the other end of the inclined support hydraulic cylinder is hinged and installed on an installation platform of the locomotive;
the top of the upright post is fixedly provided with a horizontal hanging bracket which is horizontally arranged, one end of the horizontal hanging bracket is provided with a top pulley, the other end of the horizontal hanging bracket is provided with a traction mechanism, one end of a steel cable penetrates through the top pulley and the traction mechanism and is fixedly connected with a counterweight pulley block, and the other end of the steel cable is fixedly connected on a pulley at the top of the power driving platform.
A fishing method of a drill bit adopts the fishing device, and comprises the following specific steps:
s1: controlling the inclined support hydraulic cylinder to finely adjust the position of the upright column so that the straight cylinder is positioned above the drilled well;
s2: the straight cylinder enters the well through a steel cable below a conventional traction mechanism;
s3: when the straight cylinder is put down to meet a resistance, the power driving platform drives the straight cylinder to rotate in the well in a positive and negative direction at an angle not exceeding 60 degrees in a small range until the straight cylinder is put down to the bottommost end and is sleeved at the end part of the drill bit;
s4: starting a hydraulic pump to inject hydraulic oil into the first hydraulic pipes, uniformly dispersing the hydraulic oil into each first output hydraulic pipe through the first pipeline joint, pushing the pin shaft to extend outwards, and enabling the outer end of the pin shaft to penetrate through the lug plate hole on the drill bit and be fixed in the pin shaft mounting hole in the extending process to complete the fixation of the positioning mechanism and the drill bit;
s5: and the steel cable is pulled up by the traction mechanism, the straight cylinder and the fixed drill bit are pulled out from the well drilling, then oil is injected into the second hydraulic pipe through the electromagnetic directional valve, the pin shaft is pushed out from the pin shaft mounting hole, and the pin shaft is contracted into the pin shaft sliding cavity, so that the drill bit is dismounted.
Compared with the prior art, the invention has the beneficial effects that:
1. the fishing device can replace water ghost to finish the work of automatic connection with the underground drill bit, and the death of personnel is avoided.
2. Positioning mechanism fixed mounting is in power drive platform below, is difficult for rocking, finely tunes the size around the stand of equipment can, and the positioning mechanism of being convenient for aims at the otic placode hole, and power drive platform is just anti-60 rotatory, avoids the winding of output hydraulic pressure pipe together, can splice between the pile casing, the transportation of being convenient for.
3. The righting wheel is arranged at the end part of the protective barrel at the bottom of the fishing device, so that the fishing device can enter an ear plate hole of a drilling well, the protective barrel is prevented from being eccentric, and the fishing device can be aligned to the axis of a drill bit.
4. The bottom protects evenly distributed arch on the toper cover of a section of thick bamboo, and protruding internal surface sets up the arc, and arch and drill bit conical surface can not persist mud through line contact.
5. The sector plate is provided with small holes for facilitating the flow of slurry.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic diagram of a hydraulic system according to the present invention;
FIG. 4 is a schematic view of a power driven platform according to the present invention;
FIG. 5 is a schematic view of a structure of a casing according to the present invention;
FIG. 6 is a partial cross-sectional view of a shield according to the present invention;
FIG. 7 is a cross-sectional view of a shield according to the present invention;
FIG. 8 is a bottom cross-sectional view of the sheath of the present invention;
FIG. 9 is an enlarged view taken at A of FIG. 6 in accordance with the present invention;
FIG. 10 is an enlarged view of B of FIG. 7 in accordance with the present invention;
FIG. 11 is a schematic view of the bottom sleeve structure of the present invention;
FIG. 12 is a cross-sectional view of the bottom sleeve of the present invention;
FIG. 13 is a sectional view of a sector plate according to the present invention;
in the figure: the hydraulic control system comprises a locomotive 1, a 101 hydraulic tank, a 102 hydraulic pump, a 103 electromagnetic directional valve, a 104 first hydraulic pipe, a 105 second hydraulic pipe, a 2 upright post, a 201 diagonal bracing hydraulic cylinder, a 202 horizontal hanger, a 203 top pulley block, a 204 counterweight pulley block, a 205 steel cable, a 206 guide slide rail, a 3 power driving platform, a 301 sliding claw, a 302 pulley, a 31 cylindrical platform, a 3101 mounting plate, a 32 external tooth slewing bearing, a 33 gear, a 34 motor, a 35 first pipeline joint, a 36 second pipeline joint, a 41 protective cylinder, a 42 bottom sleeve, a 401 mounting ring, a 402 centralizing wheel, a 403 screw, a 404 external convex part, a 405 internal convex part, a 51 first output hydraulic pipe, a 52 second output hydraulic pipe, a 6 pin shaft positioning mechanism, a 601 sector plate, a 602 pin shaft sliding cavity, a 603 pin shaft mounting hole, 604 conical sleeve, 605 convex part, 606 pin shaft and 607 sealing sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 5-13, the present invention provides a technical solution: a positioning mechanism for fishing a drill bit comprises a combined splicing type straight cylinder extending into a well, wherein the straight cylinder is formed by coaxially splicing at least one protective cylinder 41 and a bottom sleeve 42. As shown in fig. 10, the bottom of the casing 41 is provided with an outer protrusion 404 extending parallel to the outer surface thereof, the top of the bottom sleeve 42 is provided with an inner protrusion 405 extending parallel to the inner surface thereof, and the outer protrusion 404 and the inner protrusion 405 are fixedly connected by a screw 403. The number of the casing 41 can be adjusted according to the depths of different drilled wells through the spliced straight-barrel structure, so that the bottoms of the straight barrels can be lowered to the position where a drill bit is disconnected in the drilled wells.
In order to facilitate the straight barrel to descend in a drilling well, a mounting ring 401 is fixedly sleeved on the outer side of the bottom sleeve 42, a plurality of centralizing wheels 402 are symmetrically mounted on the mounting ring 401, the centralizing wheels 402 are in contact with the well wall, and the rolling direction of the centralizing wheels is parallel to the axis of the bottom sleeve 42. During the process of the straight cylinder descending, the plurality of centralizing wheels 402 can play a role in auxiliary positioning.
Referring to fig. 6-9 and 10-13, a pin shaft positioning mechanism 6 is fixedly installed on the inner side of the bottom of the straight cylinder;
the pin shaft positioning mechanism 6 comprises six sector plates 601 which are distributed in a central symmetry mode, so that the middle of each sector plate 601 surrounds a circular positioning area for the end portion of a drill to pass through; the sector plate 601 is uniformly provided with small holes, so that slurry can conveniently pass through the small holes when descending. When the pin positioning mechanism 6 is positioned at the alignment of the lug plates on the drill bit, because six fan-shaped plates 601 are adopted, the pin positioning mechanism 6 can be aligned with the gap between the two fan-shaped plates 601 only by rotating the pin positioning mechanism by a range of not more than 60 degrees. The specific rotation angle is determined according to the number of the ear plates on the drill bit in practice, the ear plates of the drill bit are usually 3, 4 and 6, and the corresponding rotation angles can be 120 degrees, 90 degrees and 60 degrees respectively.
As shown in fig. 8, 11 and 12, the sector plate 601 is located inside the bottom of the bottom sleeve 42, a tapered sleeve 604 is installed at the top of the sector plate 601, the large opening end of the tapered sleeve 604 faces the sector plate 601, and protrusions 605 with cambered surfaces are uniformly arranged on the inner side wall of the tapered sleeve 604.
When the straight barrel descends in a drilled well, the end part of the drill bit sequentially passes through the circular positioning area and the middle of the conical sleeve 604, the inner surface of the bulge 605 on the inner side wall of the conical sleeve 604 is provided with a cambered surface, and mud cannot be reserved on the bulge 605 and the conical surface of the drill bit through line contact.
As shown in fig. 8-9 and fig. 12-13, a pin sliding cavity 602 with an open end is horizontally disposed inside any one of the sector plates 601, a movably extending pin 606 is inserted into the pin sliding cavity 602, an outer end of the pin 606 penetrates through the opening and extends toward another adjacent sector plate 601, and a concave pin mounting hole 603 is disposed on a side surface of another sector plate 601 corresponding to an end of the pin 606;
the inner end part of the pin shaft 606 is matched with the inside of the pin shaft sliding cavity 602, a sealing sleeve 607 is fixedly arranged on an opening of the pin shaft sliding cavity 602, and the sealing sleeve 607 is sleeved on the pin shaft 606. The tops of the two sides of the pin shaft sliding cavity 602 are respectively communicated with a first output hydraulic pipe 51 and a second output hydraulic pipe 52;
the first output hydraulic pipe 51 and the second output hydraulic pipe 52 respectively and alternately inject hydraulic oil into the pin sliding cavity 602, and push the pin 606 to slide in the pin sliding cavity 602.
Further, as shown in fig. 4, 7 and 8, a first output hydraulic pipe 51 and a second output hydraulic pipe 52 are communicated with any one of the pin shaft sliding cavities 602, all the first output hydraulic pipes 51 extend above the casing 41 and are simultaneously communicated with the bottom of the first pipe joint 35, and the top of the first pipe joint 35 is communicated with the first hydraulic pipe 104; all the second output hydraulic pipes 52 also extend to the upper part of the casing 41 and simultaneously communicate with the bottom of the second pipe joint 36, the top of the second pipe joint 36 communicates with the second hydraulic pipe 105, and the first pipe joint 35 and the second pipe joint 36 are coaxially mounted on the top of the casing 41.
A plurality of annular rings are distributed on the inner wall of the protecting cylinder 41 along the extending direction of the hydraulic pipes, the calibers of the annular rings are larger than the diameters of the first output hydraulic pipe 51 and the second output hydraulic pipe 52, the first output hydraulic pipe 51 and the second output hydraulic pipe 52 penetrate through the corresponding annular rings to extend towards the top of the protecting cylinder 41, the lengths of the first output hydraulic pipe 51 and the second output hydraulic pipe 52 are slightly larger than the length of the whole straight cylinder, and when the straight cylinder rotates in the range of 60 degrees left and right, the first output hydraulic pipe 51 and the second output hydraulic pipe 52 cannot be wound in the straight cylinder.
First pipe joint 35 and second pipe joint 36 are fixed hoist and mount at power drive platform 3 internal top, and when the straight section of thick bamboo rotated, first pipe joint 35 and second pipe joint 36 can not follow the rotation, consequently the length of straight section of thick bamboo can be slightly good at to the length of first output hydraulic pressure pipe 51 and second output hydraulic pressure pipe 52 for when the straight section of thick bamboo small-amplitude rotated, first output hydraulic pressure pipe 51 and second output hydraulic pressure pipe 52 had sufficient length and keeps communicating with first pipe joint 35 and second pipe joint 36.
As shown in fig. 1-3, a first hydraulic pipe 104 and a second hydraulic pipe 105 are respectively connected to two output ends of an electromagnetic directional valve 103, an input end of the electromagnetic directional valve 103 is communicated with a hydraulic pump 102, and an input end of the hydraulic pump 102 is communicated with a hydraulic tank 101 filled with hydraulic oil.
Referring to fig. 1-2, the invention also provides a fishing device for a drill bit, comprising a locomotive 1 and an upright post 2 of a hoisting positioning mechanism, wherein the bottom of the upright post 2 is hinged with the outer end of an installation platform on the locomotive 1;
the middle part of the upright post 2 is hinged with one end of an inclined support hydraulic cylinder 201, and the other end of the inclined support hydraulic cylinder 201 is hinged and installed on an installation platform of the locomotive 1;
the top of the upright post 2 is fixedly provided with a horizontal hanger 202 which is horizontally arranged, one end of the horizontal hanger 202 is provided with a top pulley 203, the other end of the horizontal hanger 202 is provided with a traction mechanism, one end of a steel cable 205 passes through the top pulley 203 and the traction mechanism and is fixedly connected with a counterweight pulley block 204, and the other end of the steel cable 205 is fixedly connected with a pulley 302 at the top of the power driving platform 3.
As shown in fig. 1, 2 and 4, the power driving platform 3 is hoisted on the upright post 2 through a steel cable;
the power driving platform 3 comprises a cylindrical platform 31 with an opening at the bottom, a sliding claw 301 is fixedly arranged on one side of the cylindrical platform 31, and the sliding claw 301 is clamped on a guide sliding rail 206 on the surface of the upright post 2 in a tile-holding manner;
the bottom of the cylindrical platform 31 is fixedly connected with the inner ring of the external tooth slewing bearing 32, the outer ring of the external tooth slewing bearing 32 is fixedly connected with the top of the straight cylinder through a bolt, the cylindrical platform 31 extends outwards to form an installation plate 3101, a gear 33 driven by a motor 34 is rotatably installed on the installation plate 3101, and the gear 33 is meshed with the outer ring of the external tooth slewing bearing 32.
In addition, the invention also provides a fishing method of the drill bit, and the fishing device is adopted, and the concrete steps are as follows:
s1: controlling the inclined support hydraulic cylinder 201 to finely adjust the position of the upright post 2, so that the straight cylinder 4 is positioned above the drilled well;
s2: the straight cylinder 4 is entered into the well through a conventional traction mechanism lower wire rope 205;
s3: when the straight cylinder 4 is lowered to meet a resistance, the power driving platform 3 drives the straight cylinder to rotate in the well in a positive and negative direction at an angle not exceeding 60 degrees in a small range until the straight cylinder is lowered to the bottommost end and is sleeved at the end part of the drill bit;
s4: starting the hydraulic pump 102 to inject hydraulic oil into the first hydraulic pipes 104, uniformly dispersing the hydraulic oil into each first output hydraulic pipe 51 through the first pipeline joint 35, pushing the pin shaft 66 to extend outwards, and enabling the outer end of the pin shaft 66 to penetrate through an ear plate hole on the drill bit and be fixed in the pin shaft mounting hole 603 in the extending process to finish the fixation of the positioning mechanism and the drill bit;
s5: the steel cable 205 is pulled up by the traction mechanism, the straight cylinder and the fixed drill bit are pulled out from the drilled well, then oil is injected into the second hydraulic pipe 105 through the electromagnetic directional valve 103, the pin shaft 66 is pushed out from the pin shaft mounting hole 603, and the pin shaft is contracted into the pin shaft sliding cavity 602, so that the drill bit is dismounted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a positioning mechanism that drill bit was salvaged, includes the straight section of thick bamboo of a combination concatenation formula that stretches into in the pit, its characterized in that:
a pin shaft positioning mechanism (6) is fixedly arranged on the inner side of the bottom of the straight cylinder;
the pin shaft positioning mechanism (6) comprises a plurality of sector plates (601) which are distributed in a central symmetry mode, so that a circular positioning area for the end portion of a drill to pass through is formed by the middles of the sector plates (601);
a pin shaft sliding cavity (602) with an opening at one end is horizontally arranged in any one of the fan-shaped plates (601), a pin shaft (606) which can movably extend out is inserted in the pin shaft sliding cavity (602), the outer end of the pin shaft (606) penetrates out of the opening and extends towards the direction of the other adjacent fan-shaped plate (601), and the end part of the side surface of the other fan-shaped plate (601) corresponding to the pin shaft (606) is provided with a concave pin shaft mounting hole (603);
the inner end part of the pin shaft (606) is matched with the inside of the pin shaft sliding cavity (602), and the tops of the two sides of the pin shaft sliding cavity (602) are respectively communicated with a first output hydraulic pipe (51) and a second output hydraulic pipe (52);
the first output hydraulic pipe (51) and the second output hydraulic pipe (52) are respectively and alternately filled with hydraulic oil to the pin shaft sliding cavity (602), and the pin shaft (606) is pushed to slide in the pin shaft sliding cavity (602).
2. The positioning mechanism of claim 1, wherein: the straight cylinder is formed by coaxially splicing at least one protective cylinder (41) and a bottom sleeve (42), an outer convex part (404) which is parallel to the outer surface of the protective cylinder and extends out is arranged at the bottom of the protective cylinder (41), an inner convex part (405) which is parallel to the inner surface of the bottom sleeve (42) and extends out is arranged at the top of the bottom sleeve (42), and the outer convex part (404) and the inner convex part (405) are fixedly connected through a screw (403).
3. The positioning mechanism of claim 2, wherein: an installation ring (401) is fixedly sleeved on the outer side of the bottom sleeve (42), a plurality of centralizing wheels (402) are symmetrically installed on the installation ring (401) in the center, the centralizing wheels (402) are in contact with the well wall, and the rolling direction of the centralizing wheels is parallel to the axis of the bottom sleeve (42).
4. The positioning mechanism of claim 2, wherein: the fan-shaped plate (601) is located at the inner side of the bottom sleeve (42), a conical sleeve (604) is installed at the top of the fan-shaped plate (601), the large opening end of the conical sleeve (604) faces the fan-shaped plate (601), and bulges (605) with cambered surfaces are uniformly arranged on the inner side wall of the conical sleeve (604).
5. The positioning mechanism of claim 1, wherein: and a sealing sleeve (607) is fixedly arranged on an opening of the pin shaft sliding cavity (602), and the sealing sleeve (607) is sleeved on the pin shaft (606).
6. The positioning mechanism of claim 2, wherein: any one pin shaft sliding cavity (602) is communicated with a first output hydraulic pipe (51) and a second output hydraulic pipe (52), all the first output hydraulic pipes (51) extend above the protective cylinder (41) and are simultaneously communicated with the bottom of a first pipeline joint (35), and the top of the first pipeline joint (35) is communicated with a first hydraulic pipe (104); all the second output hydraulic pipes (52) also extend towards the upper part of the casing (41) and are simultaneously communicated with the bottom of a second pipeline joint (36), the top of the second pipeline joint (36) is communicated with a second hydraulic pipe (105), and the first pipeline joint (35) and the second pipeline joint (36) are coaxially arranged at the top of the casing (41).
7. The positioning mechanism of claim 6, wherein: the first hydraulic pipe (104) and the second hydraulic pipe (105) are respectively connected with two output ends of the electromagnetic directional valve (103), the input end of the electromagnetic directional valve (103) is communicated with the hydraulic pump (102), and the input end of the hydraulic pump (102) is communicated with the hydraulic tank (101) filled with hydraulic oil.
8. A fishing device based on the positioning mechanism as claimed in any one of claims 1-7, wherein: the device comprises a locomotive (1) and an upright post (2) for hoisting the positioning mechanism, wherein the upright post (2) is hoisted by a power driving platform (3) through a steel cable;
the power driving platform (3) comprises a cylindrical platform (31) with an opening at the bottom, a sliding claw (301) is fixedly arranged on one side of the cylindrical platform (31), and the sliding claw (301) is clamped on a guide sliding rail (206) on the surface of the upright post (2) in a tile-holding manner;
the cylinder platform (31) bottom fixed connection external tooth slewing bearing (32)'s inner circle, the outer lane of external tooth slewing bearing (32) passes through bolt and straight section of thick bamboo top rigid coupling, and outwards extends mounting panel (3101) on cylinder platform (31), rotate on mounting panel (3101) and install a gear (33) through motor (34) drive, gear (33) and external tooth slewing bearing (32) outer lane meshing.
9. A fishing device as claimed in claim 8, wherein: the bottom of the upright post (2) is hinged and installed at the outer end of an installation platform on the locomotive (1);
the middle part of the upright post (2) is hinged with one end of an inclined support hydraulic cylinder (201), and the other end of the inclined support hydraulic cylinder (201) is hinged and installed on an installation platform of the locomotive (1);
the top of the upright post (2) is fixedly provided with a horizontal hanging bracket (202) which is horizontally arranged, one end of the horizontal hanging bracket (202) is provided with a top pulley (203), the other end of the horizontal hanging bracket (202) is provided with a traction mechanism, one end of a steel cable (205) penetrates through the top pulley (203) and the traction mechanism and is fixedly connected with a counterweight pulley block (204), and the other end of the steel cable (205) is fixedly connected onto a pulley (302) at the top of the power driving platform (3).
10. A method for salvaging a drill bit, which is characterized in that the salvaging device as claimed in claim 8 is adopted, and the method comprises the following steps:
s1: controlling the inclined support hydraulic cylinder (201) to finely adjust the position of the upright post (2) so that the straight cylinder (4) is positioned above the well;
s2: the straight cylinder (4) is led into the well through a conventional traction mechanism lower steel cable (205);
s3: when the straight cylinder (4) is lowered to meet a resistance, the power driving platform (3) drives the straight cylinder to rotate in the well in a positive and negative direction at an angle not exceeding 30-180 degrees in a small range until the straight cylinder is lowered to the bottommost end and is sleeved at the end part of the drill bit;
s4: starting a hydraulic pump (102) to inject hydraulic oil into the first hydraulic pipes (104), uniformly dispersing the hydraulic oil into each first output hydraulic pipe (51) through a first pipeline joint (35), pushing a pin shaft (66) to extend outwards, and enabling the outer end of the pin shaft (66) to penetrate through an ear plate hole in a drill bit and be fixed in a pin shaft mounting hole (603) in the extending process to finish the fixation of a positioning mechanism and the drill bit;
s5: the steel cable (205) is pulled up by the traction mechanism, the straight cylinder and the fixed drill bit are pulled out from the drilled well, then oil is injected into the second hydraulic pipe (105) through the electromagnetic directional valve (103), the pin shaft (66) is pushed out from the pin shaft mounting hole (603), and the pin shaft is contracted into the pin shaft sliding cavity (602), so that the drill bit is disassembled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622550.2A CN111720089A (en) | 2020-07-01 | 2020-07-01 | Positioning mechanism, fishing device and fishing method for drill bit fishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010622550.2A CN111720089A (en) | 2020-07-01 | 2020-07-01 | Positioning mechanism, fishing device and fishing method for drill bit fishing |
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| Publication Number | Publication Date |
|---|---|
| CN111720089A true CN111720089A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010622550.2A Withdrawn CN111720089A (en) | 2020-07-01 | 2020-07-01 | Positioning mechanism, fishing device and fishing method for drill bit fishing |
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| CN (1) | CN111720089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030677A (en) * | 2022-04-28 | 2022-09-09 | 黄河养护集团有限公司 | Down-the-hole drill bit fishing equipment and fishing method thereof |
-
2020
- 2020-07-01 CN CN202010622550.2A patent/CN111720089A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030677A (en) * | 2022-04-28 | 2022-09-09 | 黄河养护集团有限公司 | Down-the-hole drill bit fishing equipment and fishing method thereof |
| CN115030677B (en) * | 2022-04-28 | 2023-08-08 | 黄河养护集团有限公司 | Down-the-hole drill bit salvaging equipment and salvaging method thereof |
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Application publication date: 20200929 |
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| WW01 | Invention patent application withdrawn after publication |