CN113550700B - Front opening power slip - Google Patents
Front opening power slip Download PDFInfo
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- CN113550700B CN113550700B CN202111042931.4A CN202111042931A CN113550700B CN 113550700 B CN113550700 B CN 113550700B CN 202111042931 A CN202111042931 A CN 202111042931A CN 113550700 B CN113550700 B CN 113550700B
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- slip
- door
- seat
- split body
- bushing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a front opening power slip, which comprises a slip seat with an opening at the front end, wherein the slip seat is provided with a left ear seat and a right ear seat; the rear part of the upper surface of the slip seat is welded with a slip lifting support, and the slip lifting support is connected with a lifting device and a slip body; the rear part of the slip seat is provided with a rear cover. When the slip is used, after the slip body is lifted to a certain height, the right side door and the left side door can be opened under the action of the power device, and the left slip split body and the right slip split body are opened at a certain angle under the action of the torsion spring, so that a drill string can conveniently enter and exit the bushing and the inner cavity of the slip body from the front opening, the dynamic treatment timeliness of the pipe is high, and the slip is suitable for the treatment of pipes for continuous tripping.
Description
Technical Field
The invention relates to the technical field of petroleum drilling and production equipment, in particular to a front opening power slip.
Background
The conventional drilling and production equipment is used for drilling and tripping a drill string into or out of a borehole in a single or stand form, and has the defects of discontinuous operation process, long drilling period, high operation cost and the like. The continuous tripping drilling technology is a new drilling technology newly proposed in recent years, can overcome the defects of conventional tripping operation, can realize continuous and quick tripping operation of a drilling tool, greatly improves the tripping operation efficiency of a drill column, and reduces the operation cost.
The advent of continuous tripping drilling technology has placed new demands on pipe handling equipment such as slips. In the continuous tripping operation process, in order to realize the dynamic suspension of the drill string, the slips are required to move along with the drill string in the vertical direction. Traditional slip body and slip seat are hollow structure, do not have the opening all around, and the drilling string need be followed slips upper portion, enter into inside the slip seat along the axis of slip seat. If the slip is used in continuous tripping drilling equipment, the traditional slip cannot enter the central line position of a well hole under the influence of a lower drilling string, and the clamping operation of the drilling string cannot be finished.
Disclosure of Invention
The invention aims to provide a front opening power slip, a slip seat and a bushing front opening, which allows a drill string to vertically enter the slip seat from the front side of the slip seat, the front opening is closed, and a slip body enters the bushing from the upper part of the drill string to firmly clamp the drill string.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a front opening power slip comprises a slip seat with an opening at the front end, wherein a left ear seat and a right ear seat are respectively arranged on two sides of the front opening of the slip seat, the left ear seat is connected with the rear end of a left door through a left rotating shaft, the right ear seat is connected with the rear end of a right door through a right rotating shaft, a split type bushing is installed in the middle of the slip seat, and a split type cover plate is installed on the top end of the split type bushing and the upper surface of the slip seat through bolts; the rear part of the upper surface of the slip seat is welded with a slip lifting support which is connected with the slip body through a lifting device; the rear part of the slip seat is provided with a rear cover.
Preferably, the lifting device comprises an L-shaped lifting arm and a lifting pull rod hinged to the front end of the lifting arm, the bottom end of the lifting pull rod is connected with the slip body, the rear end of the lifting arm is hinged to the top end of the slip lifting support, and the cylinder seat and the piston rod end of the slip lifting hydraulic cylinder are hinged to the slip lifting support and the lifting arm respectively.
Preferably, the front end of the left side of the front opening of the slip seat is provided with an upper left lug seat and a lower left lug seat which are identical in structure, the slip seat is provided with a horizontal left power transmission hole in the middle of the two left lug seats, a left side door hydraulic cylinder is arranged at the rear end of the left side power transmission hole, a left side connecting sleeve is arranged at the piston rod end of the left side door hydraulic cylinder and is hinged with the rear end of a left side connecting rod, the front end of the left side connecting rod is hinged between a top plate and a bottom plate of a left rotating block through a pin shaft, and the top plate and the bottom plate of the left rotating block are hinged on a connecting block in the middle of the rear end of the left side door through a left side door connecting pin shaft; the front opening right side front end of slip bowl is provided with two right ear seats that the structure is the same from top to bottom, the position of slip bowl between two right ear seats is seted up horizontally right side power transmission hole, right side door pneumatic cylinder is installed to the rear end in right side power transmission hole, the piston rod end of right side door pneumatic cylinder installs the right side adapter sleeve, the right side adapter sleeve is articulated mutually with the rear end of right side connecting rod, the front end of right side connecting rod articulates between right side turning block roof and bottom plate through the round pin axle, the roof and the bottom plate of right side turning block articulate the middle part in right side door through locking hook drive pin axle.
Preferably, the rear end of the right connecting rod is sleeved in a horizontal groove formed in the front end of the right connecting sleeve, a right rolling wheel mounting groove is horizontally formed in the middle of the rear end of the right connecting rod, and a right rolling wheel is mounted in the right rolling wheel mounting groove; the rear end of the left connecting rod is sleeved in a horizontal groove formed in the front section of the left connecting sleeve, a left rolling wheel mounting groove is horizontally formed in the middle of the rear end of the left connecting rod, and a left rolling wheel is mounted in the left rolling wheel mounting groove.
Preferably, the front parts of the left connecting rod and the right connecting rod are both bent towards the outer side of the slip seat and are splayed.
Preferably, the slip body is of a split structure and comprises a middle slip split body, a left slip split body and a right slip split body, and hoisting ear plates are arranged at the tops of the middle slip split body, the left slip split body and the right slip split body; the connecting ear plates on the two side edges of the middle slip split body are respectively hinged with the connecting ear plates on the adjacent side edges of the left slip split body and the right slip split body through a slip split body connecting rotating shaft, and a plurality of torsion springs are arranged on the slip split body connecting rotating shaft.
Preferably, limit stop blocks are arranged on the side edges of the middle slip split body and the left slip split body, and the side edges of the middle slip split body and the right slip split body, which are adjacent to each other.
Preferably, the split type bushing comprises a right bushing split body, a middle bushing split body and a left bushing split body, the right bushing split body and the middle bushing split body are symmetrically assembled on the inner wall of the slip seat, the left bushing split body is installed on the inner wall of the left door, positioning grooves are formed in the middle of the outer side walls of the right bushing split body, the middle bushing split body and the left bushing split body, and bushing positioning lugs matched with the positioning grooves are arranged on the inner wall of the slip seat and the inner wall of the left door; and a slip body position detection sensor is arranged at the middle gap of the right bushing split body and the middle bushing split body.
Preferably, the front end of the right side door is provided with a locking groove, the outer wall of the left side door is provided with a locking lug matched with the locking groove, and when the left side door and the right side door are completely closed, the locking lug is inserted into the locking groove, and the left side door and the right side door are locked. The rear end of the right door hydraulic cylinder is provided with a right door closing sensor.
Preferably, the front end of the anti-loosening hook is hinged to the middle of the right side door through an anti-loosening hook fixing pin shaft, a long circular groove in the rear portion of the anti-loosening hook is sleeved on the anti-loosening hook driving pin shaft, and the anti-loosening hook driving pin shaft is installed between the bottom plate and the upper plate of the right rotating block. An anti-loosening hook spring is sleeved on the anti-loosening hook fixing pin shaft, and a hook is arranged at one end of the rear part of the anti-loosening hook, which is close to the left door; and when the left door and the right door are completely closed, the hook is tightly buckled on the anti-loosening rod under the pushing action of the anti-loosening hook spring.
The invention has the beneficial effects that:
(1) According to the invention, the front part of the slip seat is opened, the left side door and the right side door are arranged, the bushing is designed into a split bushing, the split body of the left side bushing is fixed on the inner wall of the left side door, the slip body is designed into a split slip body, after the slip body is lifted to a certain height, the split body of the left slip and the split body of the right slip rotate around the split connection rotating shaft of the slip under the action of the torsion spring, a certain angle is opened, a drill string conveniently enters and exits the bushing and the inner cavity of the slip body from the front opening, the timeliness of entering and exiting the slip of a drilling tool is improved, and the slip is suitable for continuously pulling a pipe tool processing mechanism for drilling;
(2) The slip lifting hydraulic cylinder and the lifting arm are used for lifting/lowering the slip body, so that the structure is simple and reliable;
(3) According to the invention, the horizontal power transmission holes are respectively formed in the left side and the right side of the slip seat, the hydraulic cylinder is arranged in the power transmission holes, the front end of the hydraulic cylinder is connected with the connecting rod through the connecting sleeve, and the connecting rod drives the rotating block to rotate by controlling the forward/backward movement of the connecting rod, so that the left door and the right door are closed and opened, the power transmission mechanism is prevented from being stained in the operation process, the structure is compact, and the design is scientific and reasonable;
(4) The rolling wheel is arranged at the joint of the front end of the connecting sleeve and the tail part of the connecting rod, so that the friction between the left connecting rod and the right connecting rod and the inner wall of the power transmission hole when the left connecting rod and the right connecting rod move linearly and are subjected to the lateral force of an opening/closing door can be reduced; the front parts of the left connecting rod and the right connecting rod are bent outwards, so that the hinged position between the connecting rods and the rotating blocks is ensured, and the rotating blocks can be better driven to rotate;
(5) The right side door and the left side door are respectively provided with a locking groove and a locking lug, and are provided with an anti-loosening hook and an anti-loosening rod, so that the reliability of the locking state of the right side door and the left side door is further ensured, and safety accidents caused by power failure are prevented; and meanwhile, a right door closing sensor is arranged on the right door hydraulic cylinder, so that the closing state of the right door can be conveniently detected, and the misoperation is prevented to cause operation accidents.
(6) According to the invention, the slip body position sensor is arranged in the slip seat, so that the position of the slip body can be monitored in real time, and whether the slip body holds the drill rod or not can be accurately judged, and the automation degree and reliability of the device are improved;
(7) According to the invention, the positioning groove is arranged on the outer wall of the split type bushing, and the bushing positioning lug is arranged on the inner wall of the slip seat and the inner wall of the left side door, so that the connection firmness of the split type bushing, the slip seat and the left side door is improved;
(8) The split cover plate is arranged at the top of the split bushing, so that the damage to the equipment in the operation process can be reduced, the service life of the equipment is prolonged, the maintenance times are reduced, and the production cost is saved.
Drawings
FIG. 1 is a schematic view of the left and right doors of the present invention in a closed position;
FIG. 2 is a top view of the left and right doors of the present invention in an open position;
FIG. 3 is a horizontal cross-sectional view of the invention of FIG. 2;
FIG. 4 is a schematic view of the structure of the anti-release hook of FIG. 3
FIG. 5 is a schematic view of the internal structure of the present invention of FIG. 2;
FIG. 6 is a schematic view of the left side drive configuration of the present invention of FIG. 2;
FIG. 7 is a schematic view of the structure of the slip body of FIG. 2;
FIG. 8 is a schematic longitudinal cross-sectional view of the invention of FIG. 2;
FIG. 9 is a schematic structural view of the slip body and split bushing of FIG. 2;
FIG. 10 is a schematic view of the outer portion of the left door of FIG. 2;
FIG. 11 is a schematic view of the inner wall of the left side door of FIG. 2;
FIG. 12 is a left and right door anti-release hook fastening schematic;
in the figure: 1. slip seat, 2, rear cover, 3, slip lifting support, 4, slip lifting hydraulic cylinder, 5, lifting arm, 6, lifting pull rod, 7, slip body, 701, middle slip body, 702, left slip body, 703, right slip body, 704, slip body connecting rotating shaft, 705, torsion spring, 706, limit stop, 8, left rotating shaft, 9, left ear seat, 10, left door, 11, anti-loose hook, 12, right ear seat, 13, right side door, 14, right rotating shaft, 15, split cover plate, 16, split bushing, 1601, right bushing body, 1602, middle bushing body, 1603, left bushing body, 1604, positioning groove, 1605, bushing positioning lug, 17, a left door hydraulic cylinder, 18 left connecting sleeves, 19, left rolling wheels, 20 left connecting rods, 21, a left power transmission hole, 22, a left rotating block, 23, a left door connecting pin shaft, 24, a connecting block, 25, a hook, 26, a locking rod, 27, a locking hook fixing pin shaft, 28, a locking hook spring, 29, a long circular groove, 30, a locking hook driving pin shaft, 31, a right rotating block, 32, a pin shaft, 33, a right connecting rod, 34, a right rolling wheel, 35, a right connecting sleeve, 36, a right power transmission hole, 37, a right door hydraulic cylinder, 38, a slip body position detection sensor, 39, a right door closing sensor, 40, a locking groove, 41, a locking lug, 42 and a push-pull handle.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a front opening power slip comprises a slip seat 1 with an opening at the front end, wherein a left ear seat 9 and a right ear seat 12 are respectively arranged at two sides of the front opening of the slip seat 1, the left ear seat 9 is connected with the rear end of a left door 10 through a left rotating shaft 8, the right ear seat 12 is connected with the rear end of a right door 13 through a right rotating shaft 14, a split bushing 16 is arranged in the middle of the slip seat 1, and a split cover plate 15 fixed through bolts is arranged at the top end of the split bushing 16 and the upper surface of the slip seat 1; the slip lifting support 3 is welded at the rear part of the upper surface of the slip seat 1, and the slip lifting support 3 is connected with a slip body 7 through a lifting device; the back part of the slip seat 1 is provided with a back cover 2.
The lifting device comprises an L-shaped lifting arm 5 and a lifting pull rod 6 hinged to the front end of the lifting arm 5, the bottom end of the lifting pull rod 6 is connected with a slip body 7, the rear end of the lifting arm 5 is hinged to the top end of the slip lifting support 3, and a cylinder seat and a piston rod end of the slip lifting hydraulic cylinder 4 are hinged to the slip lifting support 3 and the lifting arm 5 respectively.
As shown in fig. 3, the front portions of the left and right links 20 and 33 are both bent outward of the slip bowl 1 in a splayed shape.
As shown in fig. 3 and 5, an upper left ear seat 9 and a lower left ear seat 9 with the same structure are arranged at the front end of the left side of the front opening of the slip seat 1, a horizontal left power transmission hole 21 is formed in the middle of the two left ear seats 9 of the slip seat 1, a left door hydraulic cylinder 17 is installed at the rear end of the left power transmission hole 21, a left connecting sleeve 18 is installed at the piston rod end of the left door hydraulic cylinder 17, the left connecting sleeve 18 is hinged to the rear end of a left connecting rod 20, the front end of the left connecting rod 20 is hinged between the top plate and the bottom plate of a left rotating block 22 through a pin shaft, and the top plate and the bottom plate of the left rotating block 22 are hinged to a connecting block 24 in the middle of the rear end of the left door 10 through a left door connecting pin shaft 23; the front opening right side front end of the slip seat 1 is provided with two upper and lower right ear seats 12 that the structure is the same, the position of slip seat 1 between two right ear seats 12 has seted up horizontally right side power transmission hole 36, right side door pneumatic cylinder 37 is installed to the rear end of right side power transmission hole 36, right side adapter sleeve 35 is installed to the tailpiece of the piston rod of right side door pneumatic cylinder 37, right side adapter sleeve 35 is articulated with the rear end of right side connecting rod 33, the front end of right side connecting rod 33 articulates between the roof of right side turning block 31 and bottom plate through the round pin axle, the roof of right side turning block 31 and bottom plate pass through the middle part of right side door 13 of right pivot 14 installation.
As shown in fig. 6, the rear end of the right connecting rod 33 is sleeved in a horizontal groove formed at the front end of the right connecting sleeve 35, a right rolling wheel mounting groove is horizontally formed in the middle of the rear end of the right connecting rod 33, and a right rolling wheel 34 is mounted in the right rolling wheel mounting groove; the rear end of the left connecting rod 20 is sleeved in a horizontal groove formed in the front section of the left connecting sleeve 18, a left rolling wheel mounting groove is horizontally formed in the middle of the rear end of the left connecting rod 20, and a left rolling wheel 19 is mounted in the left rolling wheel mounting groove.
As shown in fig. 7, the slip body 7 is a split structure, and includes a middle slip split body 701, a left slip split body 702, and a right slip split body 703, and lifting ear plates are disposed at the tops of the middle slip split body 701, the left slip split body 702, and the right slip split body 703; the connecting ear plates on the two side edges of the middle slip split body 701 are hinged with the connecting ear plates on the adjacent side edges of the left slip split body 702 and the right slip split body 703 through a slip split body connecting rotating shaft 704, and a plurality of torsion springs 705 are arranged on the slip split body connecting rotating shaft 704.
As shown in fig. 5, 8 and 9, the split bushing 16 includes a right bushing split 1601, a middle bushing split 1602 and a left bushing split 1603, the right bushing split 1601 and the middle bushing split 1602 are symmetrically assembled on the inner wall of the slip seat 1, the left bushing split 1603 is installed on the inner wall of the left door 10, positioning grooves 1604 are arranged in the middle of the outer side walls of the right bushing split 1601, the middle bushing split 1602 and the left bushing split 1603, and bushing positioning protrusions 1605 matched with the positioning grooves 1604 are arranged on the inner wall of the slip seat 1 and the inner wall of the left door 10; a slip body position detection sensor 38 is installed in the middle gap between the right bushing sub-body 1601 and the middle bushing sub-body 1602.
As shown in fig. 5, 10 and 11, the front end of the right door 13 is provided with a locking groove 40, the outer wall of the left door 10 is provided with a locking protrusion 41 adapted to the locking groove 40, and when the left door 10 and the right door 13 are completely closed, the locking protrusion 41 is inserted into the locking groove 40.
As shown in fig. 4 and 12, the middle of the right door 13 is hinged to the front end of the locking hook 11 through a locking hook fixing pin 27, the locking hook 11 is located above the bottom plate of the right rotating block 31, a long circular groove 29 at the rear of the locking hook 11 is assembled on a locking hook driving pin 30, a locking hook spring 28 is installed at one side of the locking hook fixing pin 27, and a hook 25 is installed at one end of the rear of the locking hook 11 close to the left door; a push-pull handle 42 is arranged between the two locking convex blocks 41 of the left door 10, the push-pull handle 42 is provided with a locking rod 26, and when the left door 10 and the right door 13 are completely closed, the hook 25 is tightly buckled on the locking rod 26 under the pushing action of the locking hook spring 28.
The working process of the invention is as follows:
the flow of tightly holding the drill column by the slip body is as follows:
the piston rod end of the slip lifting hydraulic cylinder 4 extends out to drive the lifting arm 5 to rotate around the slip lifting support 3, the front end of the lifting arm 5 is lifted to drive the lifting pull rod 6 to gradually lift the slip body 7 to a certain height from the split bushing 16, the left slip split body 702 and the right slip split body 703 of the slip body 7 rotate around the slip split body connecting rotating shaft 704 under the action of the torsion spring 705, a certain angle is opened, and the opened angle is restrained within a certain range under the action of the limit stop 706;
an operator controls the piston rod end of the right side door hydraulic cylinder 37 to retract, the right side connecting rod 33 moves backwards under the pulling of the right side connecting sleeve 35 to drive the right rotating block 31 to rotate clockwise, the anti-loosening hook drives the pin shaft 30 to move rightwards in the long circular groove 29 along with the clockwise rotation, the anti-loosening hook 11 is driven to rotate anticlockwise, the hook 25 gradually disengages from the anti-loosening rod 26 of the left side door 10, and the right side door 13 is unlocked from the left side door 10; the right rotating block 31 continues to rotate, the right door 13 rotates around the right rotating shaft 14, and the right door 13 is opened in place; the piston rod end of the left side door hydraulic cylinder 17 retracts backwards, the left side connecting rod 20 moves backwards under the driving of the left side connecting sleeve 18 to drive the left rotating block 22 to rotate anticlockwise, the left rotating block 22 drives the left side door 10 to rotate anticlockwise, and the left side door 10 is opened in place; an operator controls a drill string to enter the middle of the split bushing 16 and the slip body 7 from the opening;
an operator controls a piston rod end of a left door hydraulic cylinder 17 to extend forwards, a left connecting rod 20 moves forwards under the pushing action of a left connecting sleeve 18 to drive a left rotating block 22 to rotate clockwise, the left rotating block 22 drives a left door 10 to rotate clockwise, and a left bushing split 1603, a right bushing split 1601 and a middle bushing split 1602 which are installed on the inner wall of the left door 10 are closed in a loop; an operator controls the piston rod end of the right door hydraulic cylinder 37 to extend out, the right connecting rod 33 moves forwards under the pushing of the right connecting sleeve 35 to drive the right rotating block 31 to rotate anticlockwise, the right door 13 rotates around the right rotating shaft, the locking lug 41 on the outer wall of the left door 10 is inserted into the locking groove 40 of the right door 13, and the right door 13 and the left door 10 are locked; in the rotating process of the right rotating block 31, the anti-loosening hook drives the pin shaft 30 to move towards the left door in the long circular groove 29 at the rear part of the anti-loosening hook 11 to drive the anti-loosening hook 11 to rotate clockwise, and the hook 25 is hung on the anti-loosening rod 26 of the left door to lock the left door 10 and the right door 13;
the operating personnel control slips and promote the piston rod end of hydraulic cylinder 4 and retract, drive lifting arm 5 and promote the support 3 antiport around the slips, the front end of lifting arm 5 descends gradually, drive and promote pull rod 6 and put into split type bushing 16 with slip body 7 gradually, left side slips components of a whole that can function independently 702 and right side slips components of a whole that can function independently 703 of slip body 7 are under the restriction of split type bushing 16 inner wall, around slips components of a whole that can function independently connecting pivot 704 antiport, until firmly the centre gripping is held tightly with the drill string, slips position detection sensor 38 arouses and feeds back drill string chucking signal.
The slip body tripping procedure is the reverse of the above.
According to the invention, the front part of the slip seat is opened, the left side door and the right side door are arranged, the bushing is designed into a split bushing, the split left bushing is fixed on the inner wall of the left side door, the slip body is lifted into the split slip body, and after the slip body is lifted to a certain height, the split left slip and the split right slip rotate around the slip split connection rotating shaft under the action of the torsion spring to open a certain angle, so that a drill string can conveniently enter and exit from the bushing and the inner cavity of the slip body from the front opening, and the drilling tool is high in treatment timeliness and is suitable for continuously pulling a pipe tool treatment mechanism for drilling.
Claims (8)
1. A front opening power slip, characterized by: the clamping shoe comprises a clamping shoe seat (1) with an opening at the front end, wherein a left ear seat (9) and a right ear seat (12) are respectively arranged on two sides of the front opening of the clamping shoe seat (1), the left ear seat (9) is connected with the rear end of a left side door (10) through a left rotating shaft (8), the right ear seat (12) is connected with the rear end of a right side door (13) through a right rotating shaft (14), a split bushing (16) is arranged in the middle of the clamping shoe seat (1), and a split cover plate (15) is arranged on the top end of the split bushing (16) and the upper surface of the clamping shoe seat (1) through bolts; the slip lifting support (3) is welded at the rear part of the upper surface of the slip seat (1), and the slip lifting support (3) is connected with a slip body (7) through a lifting device; the rear part of the slip seat (1) is provided with a rear cover (2);
the slip body (7) is of a split structure and comprises a middle slip split body (701), a left slip split body (702) and a right slip split body (703), and connecting lug plates on two side edges of the middle slip split body (701) are respectively hinged with connecting lug plates on adjacent side edges of the left slip split body (702) and the right slip split body (703) through a slip split body connecting rotating shaft (704);
the split type bushing (16) comprises a right bushing split body (1601), a middle bushing split body (1602) and a left bushing split body (1603), the right bushing split body (1601) and the middle bushing split body (1602) are symmetrically assembled on the inner wall of the slip seat (1), and the left bushing split body (1603) is installed on the inner wall of the left door (10);
the front end of the left side of a front opening of the slip seat (1) is provided with an upper left ear seat (9) and a lower left ear seat (9) which are identical in structure, a horizontal left power transmission hole (21) is formed in the middle of the two left ear seats (9) of the slip seat (1), a left door hydraulic cylinder (17) is installed at the rear end of the left power transmission hole (21), a left connecting sleeve (18) is installed at the piston rod end of the left door hydraulic cylinder (17), the left connecting sleeve (18) is hinged to the rear end of a left connecting rod (20), the front end of the left connecting rod (20) is hinged between the top plate and the bottom plate of a left rotating block (22) through a pin shaft, the left rotating block (22) is hinged to the middle of the left door (10) through a left rotating shaft (8), and the top plate and the bottom plate of the left rotating block (22) are hinged to a connecting block (24) in the middle of the rear end of the left door (10) through a left door connecting pin shaft (23); the front end of the right side of the front opening of the slip seat (1) is provided with an upper right lug seat (12) and a lower right lug seat (12) which are identical in structure, a horizontal right power transmission hole (36) is formed in the slip seat (1) between the two right lug seats (12), a right door hydraulic cylinder (37) is installed at the rear end of the right power transmission hole (36), a right connecting sleeve (35) is installed at the piston rod end of the right door hydraulic cylinder (37), the right connecting sleeve (35) is hinged with the rear end of a right connecting rod (33), the front end of the right connecting rod (33) is hinged between the top plate and the bottom plate of a right rotating block (31) through a pin shaft (32), a locking hook driving pin shaft (30) is installed between the top plate and the bottom plate of the right rotating block (31), and the locking hook driving pin shaft (30) is hinged to the middle part of the right door (13) through a right rotating shaft (14);
the rear end of the right connecting rod (33) is sleeved in a horizontal groove formed in the front end of the right connecting sleeve (35), the middle part of the rear end of the right connecting rod (33) is horizontally provided with a right rolling wheel mounting groove, and a right rolling wheel (34) is mounted in the right rolling wheel mounting groove; the rear end of the left connecting rod (20) is sleeved in a horizontal groove formed in the front section of the left connecting sleeve (18), a left rolling wheel mounting groove is horizontally formed in the middle of the rear end of the left connecting rod (20), and a left rolling wheel (19) is mounted in the left rolling wheel mounting groove.
2. The front opening power slip of claim 1, wherein: the lifting device comprises an L-shaped lifting arm (5) and a lifting pull rod (6) hinged to the front end of the lifting arm (5), the bottom end of the lifting pull rod (6) is connected with a slip body (7), the rear end of the lifting arm (5) is hinged to the top end of a slip lifting support (3), and a cylinder body and a piston rod end of a slip lifting hydraulic cylinder (4) are hinged to the slip lifting support (3) and the lifting arm (5) respectively.
3. The front opening power slip of claim 1 or 2, wherein: the front parts of the left connecting rod (20) and the right connecting rod (33) are both bent towards the outer side of the slip seat (1) and are splayed.
4. The front opening power slip of claim 3, wherein: the top parts of the middle slip split body (701), the left slip split body (702) and the right slip split body (703) are provided with lifting ear plates; a plurality of torsion springs (705) are arranged on the slip split connection rotating shaft (704).
5. The front opening power slip of claim 4, wherein: and limit stoppers (706) are arranged on the adjacent side edges of the middle slip split body (701) and the left slip split body (702) and the middle slip split body (701) and the right slip split body (703).
6. The front opening power slip of claim 5, wherein: the middle parts of the outer side walls of the right side bushing split body (1601), the middle bushing split body (1602) and the left side bushing split body (1603) are provided with positioning grooves (1604), and bushing positioning lugs (1605) matched with the positioning grooves (1604) are arranged on the inner wall of the slip seat (1) and the inner wall of the left side door (10); and a slip body position detection sensor (38) is arranged in a gap between the right bushing split body (1601) and the middle bushing split body (1602).
7. The front opening power slip of claim 6, wherein: a locking groove (40) is formed in the front end of the right side door (13), a locking lug (41) matched with the locking groove (40) is arranged on the outer wall of the left side door (10), when the left side door (10) and the right side door (13) are completely closed, the locking lug (41) is inserted into the locking groove (40), and the left door and the right door are locked; the rear end of the right door hydraulic cylinder (37) is provided with a right door closing sensor (39).
8. The front opening power slip of claim 7, wherein: the front end of the anti-loosening hook (11) is hinged to the middle of the right side door (13) through an anti-loosening hook fixing pin shaft (27), a long circular groove (29) in the rear of the anti-loosening hook (11) is sleeved on an anti-loosening hook driving pin shaft (30), and the anti-loosening hook driving pin shaft (30) is installed between a bottom plate and an upper plate of a right rotating block (31) and rotates along with the right rotating block (31); an anti-loosening hook spring (28) is sleeved on the anti-loosening hook fixing pin shaft (27), and a hook (25) is arranged at one end, close to the left door, of the rear part of the anti-loosening hook (11); a push-pull handle (42) is arranged between two locking convex blocks (41) of the left door (10), a locking rod (26) is arranged on the push-pull handle (42), and when the left door (10) and the right door (13) are completely closed, the hook (25) is tightly buckled on the locking rod (26) under the pushing action of a locking hook spring (28).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042931.4A CN113550700B (en) | 2021-09-07 | 2021-09-07 | Front opening power slip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111042931.4A CN113550700B (en) | 2021-09-07 | 2021-09-07 | Front opening power slip |
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| CN113550700A CN113550700A (en) | 2021-10-26 |
| CN113550700B true CN113550700B (en) | 2023-03-24 |
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| CN202111042931.4A Active CN113550700B (en) | 2021-09-07 | 2021-09-07 | Front opening power slip |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033319A (en) * | 2021-11-19 | 2022-02-11 | 江苏如通石油机械股份有限公司 | Slip type power elevator |
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| CN113550700A (en) | 2021-10-26 |
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