Buckle device

Abstract

The present invention provides a latching device, which relates to the technical field of automated well repairing equipment, including a slip and a latching body; the latching body is connected to the slip so that the latching body can move integrally with the slip, so when the slip is offset and floats with the change of the derrick suspension load, the latching body will move integrally with the change of the position of the slip, and further, a latching channel is provided on the latching body, and the latching channel is correspondingly arranged to the coupling position of the slip, so as to limit the docking of the pipe column at the coupling position of the slip, and the integrated design of the latching body and the slip can eliminate the displacement between the latching body and the slip during the latching process, so that the pipe column can be directly and better docked with the pipe column in the slip during docking, thereby solving the technical problem in the prior art that it is difficult to ensure accuracy when the robot arm is used for latching the pipe.

Description

Technical Field

[0001] The invention relates to the technical field of automated well repairing equipment, and in particular to a buckling device. Background Art

[0002] In the field of automated well repair operations, the pipes in the wellhead need to be connected by fastening. The existing fastening operations are gradually replaced by drilling platform manipulators instead of manual pipe support. Although the manipulator has advantages in the repetitive actions of pipe support and fastening, the operating condition of the manipulator is to ensure that the position of the coupling of the pipe in the center of the wellhead is relatively stable.

[0003] In the overhaul operation in the prior art, floating slips are generally used to fix the pipe string in the wellhead. However, the position of the floating slips at the center of the wellhead will shift and float to a certain extent as the suspended load of the derrick changes, and the movement amount and direction are uncertain, resulting in the position of the coupling of the pipe string at the upper end of the slips also changing. The existing manipulator technology does not have the function of dynamic identification, so it is difficult to ensure accuracy when the manipulator supports the pipes for fastening. This characteristic of the floating slips is not conducive to the manipulator supporting the pipes for fastening. Summary of the invention

[0004] The object of the present invention is to provide a fastening device to solve the technical problem in the prior art that it is difficult to ensure accuracy when a robot holds the pipes for fastening.

[0005] The present invention provides a buckling device, comprising: a slip and a buckling body;

[0006] The buckle body is connected to the slip so that the buckle body can move integrally with the slip. The buckle body is provided with a buckle channel, which is arranged corresponding to the coupling position of the slip and is used to limit the connection of the pipe column at the coupling position of the slip.

[0007] In a preferred embodiment of the present invention, the buckle body comprises a buckle mechanism, an adjustment device and a base;

[0008] One end of the base is connected to the cava, and the other end of the base is connected to the snap mechanism through the adjusting device, the adjusting device is used to adjust the position of the snap mechanism relative to the cava, and the snap channel is arranged on the snap mechanism.

[0009] In a preferred embodiment of the present invention, the adjustment device includes a lifting mechanism and a telescopic mechanism;

[0010] The two ends of the lifting mechanism are respectively connected to the base and the telescopic mechanism, and the lifting mechanism is used to drive the telescopic mechanism to move up and down reciprocatingly;

[0011] One end of the telescopic mechanism is connected to the interlocking mechanism, and the telescopic mechanism is used to drive the interlocking mechanism to reciprocate along the horizontal direction.

[0012] In a preferred embodiment of the present invention, the lifting mechanism comprises a lifting column and a lifting cylinder;

[0013] The lifting cylinder is located in the lifting column, and the lifting column includes a plurality of column sleeves which are sleeved in sequence. The lifting cylinder is connected to the top of the column sleeve and is used to drive the plurality of column sleeves to rise or fall in sequence.

[0014] In a preferred embodiment of the present invention, the telescopic mechanism comprises a first guide rail, a telescopic arm and a telescopic cylinder;

[0015] The first guide rail is connected to the lifting column, and the first guide rail and the lifting column are vertically arranged. The telescopic arm is arranged on the first guide rail and is slidably connected to the first guide rail. Both ends of the telescopic arm are respectively connected to the locking mechanism and the telescopic cylinder. The telescopic cylinder is used to drive the locking mechanism to reciprocate in the horizontal direction through the telescopic arm.

[0016] In a preferred embodiment of the present invention, it further comprises a fastening mechanism;

[0017] The fastening mechanism is arranged at one end of the telescopic arm away from the locking mechanism, and one end of the fastening mechanism is connected to the telescopic arm, and the other end of the fastening mechanism abuts against a side of the first guide rail away from the telescopic arm, and the fastening mechanism can move along the first guide rail, and the fastening mechanism is used to fix the telescopic arm in the first guide rail.

[0018] In a preferred embodiment of the present invention, the fastening mechanism includes an adjusting screw, a guide seat and a roller;

[0019] The guide seat cover is arranged on the outside of the telescopic arm, and both sides of the guide seat extend to the side of the first guide rail away from the telescopic arm, and the roller is connected to the guide seat through the adjusting screw, and the adjusting screw is used to adjust the distance between the roller and the first guide rail so that the roller abuts against the side of the first guide rail away from the telescopic arm, and the roller can roll along the first guide rail.

[0020] In a preferred embodiment of the present invention, the buckle mechanism includes a driving mechanism, a guide cover, a buckle adjustment mechanism, a second guide rail and a gear;

[0021] The second guide rail is connected to the telescopic mechanism, the guide cover is detachably connected to the snap-on adjustment mechanism, the snap-on adjustment mechanism is slidably connected to the second guide rail, the driving mechanism is transmission-connected to the snap-on adjustment mechanism through the gear, and the driving mechanism is used to drive the snap-on adjustment mechanism to slide along the second guide rail to adjust the opening and closing degree of the snap-on channel in the guide cover.

[0022] In a preferred embodiment of the present invention, the guide cover comprises a first guide body, a second guide body, a first connecting frame and a second connecting frame;

[0023] The first guide body and the second guide body can be buckled to form the buckled channel, and the buckled channel is provided with a stepped platform, and the stepped platform is used to be buckled with the pipe column on the slip;

[0024] The first guide body is connected to the first connecting frame, the second guide body is connected to the second connecting frame, the first connecting frame and the second connecting frame are respectively and individually connected to the snap adjustment mechanism, and the snap adjustment mechanism is used to adjust the movement of the first guide body and the second guide body in the directions toward or away from each other.

[0025] In a preferred embodiment of the present invention, the guide cover further comprises a first preload spring, a second preload spring, a first guide rod and a second guide rod;

[0026] The first guide rod is inserted on the first connecting frame along the vertical direction, the first guide body is connected to the first guide rod, the first preload spring is sleeved on the outside of the first guide rod, and the two ends of the first preload spring are respectively in contact with the first guide body, and the first preload spring is used to buffer the impact force of the pipe column on the first guide body;

[0027] The second guide rod is inserted on the second connecting frame along the vertical direction, the second guide body is connected to the second guide rod, the second pre-tensioning spring is sleeved on the outside of the second guide rod, and the two ends of the second pre-tensioning spring are respectively abutted against the second guide body, and the second pre-tensioning spring is used to buffer the impact force of the pipe column on the second guide body.

[0028] In a preferred embodiment of the present invention, the buckle adjustment mechanism includes a first rack, a second rack, a first slider and a second slider;

[0029] The first slider is connected to the first connecting frame, the second slider is connected to the second connecting frame, and the first slider and the second slider are respectively slidably connected to the second guide rail, the first rack is connected to the first slider, the second rack is connected to the second slider, and the gear is meshed with the first rack and the second rack respectively, the gear is used to drive the first rack and the second rack to move, and the first rack and the second rack are respectively located on both sides of the gear so that the movement directions of the first rack and the second rack are opposite.

[0030] In a preferred embodiment of the present invention, the buckle adjustment mechanism further includes a first adjustment bolt and a second adjustment bolt;

[0031] The first connecting frame is connected to the first sliding block through the first adjusting bolt, and the first adjusting bolt is used to adjust the movement of the first connecting frame along the extension direction of the second guide rail;

[0032] The second connecting frame is connected to the second sliding block via the second adjusting bolt, and the second adjusting bolt is used to adjust the movement of the second connecting frame along the extension direction of the second guide rail.

[0033] The present invention provides a latching device, comprising: a cava and a latching body; the cava is connected to the latching body so that the cava can move as a whole with the cava. Therefore, when the cava is offset and floats as the suspended load of the derrick changes, the cava will move as a whole with the position change of the cava. Furthermore, a latching channel is provided on the latching body, and the latching channel is corresponding to the coupling position of the cava, so as to limit the docking of the pipe column at the coupling position of the cava. The integrated design of the cava and the latching body can eliminate the displacement between the cava and the latching body during the latching process, so that the pipe column can be directly and better docked with the pipe column in the cava during docking, thereby solving the technical problem in the prior art that it is difficult to ensure accuracy when a manipulator holds the pipe for latching. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the overall structure of the fastening device provided in an embodiment of the present invention;

[0036] Figure 2A schematic diagram of the structure of an adjusting device for a buckle device provided in an embodiment of the present invention;

[0037] Figure 3 A schematic structural diagram of a fastening mechanism of a buckling device provided in an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the structure of the lifting mechanism of the buckle device provided in an embodiment of the present invention;

[0039] Figure 5 A schematic structural diagram of a fastening mechanism of a fastening device provided in an embodiment of the present invention;

[0040] Figure 6 A top view of a fastening mechanism of a fastening device provided in an embodiment of the present invention;

[0041] Figure 7 A side view of a fastening mechanism of a fastening device provided in an embodiment of the present invention;

[0042] Figure 8 A schematic structural diagram of the snap-fit ​​adjustment mechanism of the snap-fit ​​device provided in an embodiment of the present invention.

[0043] Icons: 100-slip; 200-locking body; 300-locking mechanism; 301-driving mechanism; 302-guide cover; 312-first guide body; 322-second guide body; 332-first connecting frame; 342-second connecting frame; 352-first preload spring; 362-first guide rod; 303-locking adjustment mechanism; 313-first rack; 323-second rack; 333-first slider; 343-second slider Block; 353-first adjusting bolt; 363-second adjusting bolt; 304-second guide rail; 305-gear; 400-adjusting device; 401-lifting mechanism; 411-lifting column; 421-lifting cylinder; 402-telescopic mechanism; 412-first guide rail; 422-telescopic arm; 432-telescopic cylinder; 500-base; 600-fastening mechanism; 601-adjusting screw; 602-guide seat; 603-roller. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] This embodiment is to solve the technical problem of low precision of the manipulator in fastening. Specifically, in the process of lifting and lowering the tubing, the cava will shift in position as the load changes each time the tubing is lifted or lowered, causing the manipulator to be out of coaxial with the tubing clamped by the cava each time it supports the tubing to the center of the wellhead, that is, there is a certain position deviation. Since the manipulator cannot identify the random offset of the cava each time, it causes a technical problem that it is difficult to ensure accuracy when the manipulator supports the tubing.

[0046] like Figure 1-Figure 8 As shown, a latching device provided in this embodiment includes: a cava 100 and a latching body 200; the latching body 200 is connected to the cava 100 so that the latching body 200 can move integrally with the cava 100, and the latching body 200 is provided with a latching channel, which is arranged corresponding to the coupling position of the cava 100, and is used to limit the docking of the pipe column at the coupling position of the cava 100.

[0047] It should be noted that the slip 100, also known as the wellhead suspension drill tool, is a tool used to clamp and suspend the drill string and casing string when drilling. After the pipe string is clamped by the slip 100 at the wellhead, it is necessary to continue to dock and connect the pipe string with the pipe string in the slip 100. During the connection process, since the position of the slip 100 will deviate and float to a certain extent as the derrick suspension load changes, in order to ensure the accuracy of the coupling position of the pipe string in the slip 100, the buckle body 200 provided in this embodiment is integrally connected with the slip 100, and the buckle body 200 is provided with a buckle channel for fixing the pipe string. Then, when the external pipe string needs to be docked with the pipe string in the slip 100, the buckle channel and the coupling position of the slip 100 are set correspondingly, so that the pipe string passing through the buckle channel can be completely docked with the pipe string in the slip 100, thereby ensuring the accuracy of the pipe string coupling docking.

[0048] There are many ways to connect the buckle body 200 and the slip 100, for example, by bolting, or the buckle body 200 can be connected to the outside of the slip 100 by snapping, etc. Preferably, the buckle body 200 and the slip 100 are connected by a detachable connection, so that after the well repair operation is completed, the buckle body 200 and the slip 100 can be disassembled separately, and other connection methods are not described here. Further explanation: After the buckle body 200 and the slip 100 are connected, they will be used as a whole device, and can be handled as a whole device during hoisting and transportation.

[0049] Optionally, the interlocking body 200 is provided with interlocking channels which may be provided with a plurality of specifications, and different interlocking channels may be selected for different pipe columns by selecting inner diameters of different interlocking channels.

[0050] A latching device provided in the present embodiment includes: a cava 100 and a latching body 200; the latching body 200 is connected to the cava 100 so that the latching body 200 can move integrally with the cava 100. Therefore, when the cava 100 is offset and floated as the suspended load of the derrick changes, the latching body 200 will move integrally with the position change of the cava 100. Furthermore, a latching channel is provided on the latching body 200, and the latching channel is correspondingly arranged to the coupling position of the cava 100, so as to limit the docking of the pipe string at the coupling position of the cava 100. The integrated design of the latching body 200 and the cava 100 can eliminate the displacement between the latching body 200 and the cava 100 during the latching process, so that the pipe string can be directly docked with the pipe string in the cava 100 better during docking, thereby alleviating the technical problem in the prior art that it is difficult to ensure accuracy when the robot supports the pipe for latching.

[0051] On the basis of the above embodiments, in a preferred embodiment of the present invention, the latch body 200 includes a latch mechanism 300, an adjusting device 400 and a base 500; one end of the base 500 is connected to the cava 100, and the other end of the base 500 is connected to the latch mechanism 300 through the adjusting device 400, and the adjusting device 400 is used to adjust the position of the latch mechanism 300 relative to the cava 100, and the latch channel is arranged on the latch mechanism 300.

[0052] Optionally, the base 500 and the cava 100 are connected by bolt fixing, and the base 500 and the cava 100 are vertically arranged. Therefore, when the base 500 and the cava 100 are fixed, the base 500 is connected to the snap mechanism 300 through the adjusting device 400, and the adjusting device 400 can realize vertical adjustment and front and rear movement, and then the adjusting device 400 can make the snap channel on the snap mechanism 300 correspond to the center coupling position of the cava 100.

[0053] The base 500 can adopt a rectangular base 500, wherein one end of the base 500 can be connected to the cava 100, and a pad is provided on the other end of the base 500 close to the ground, so as to ensure that both ends of the base 500 can be on the same horizontal plane, and the adjusting device 400 is connected to the side of the base 500 facing away from the ground, and the adjusting device 400 can drive the locking mechanism 300 to adjust and move along the vertical direction. Furthermore, since the base 500 has a length, the adjusting device 400 can also drive the locking mechanism 300 to move and adjust along the length direction of the base 500 after completing the vertical adjustment, and finally ensure that the locking channel of the locking mechanism 300 corresponds exactly to the coupling position of the cava 100.

[0054] In a preferred embodiment of the present invention, the adjusting device 400 includes a lifting mechanism 401 and a telescopic mechanism 402; the two ends of the lifting mechanism 401 are respectively connected to the base 500 and the telescopic mechanism 402, and the lifting mechanism 401 is used to drive the telescopic mechanism 402 to move back and forth up and down; one end of the telescopic mechanism 402 is connected to the latching mechanism 300, and the telescopic mechanism 402 is used to drive the latching mechanism 300 to move back and forth in the horizontal direction.

[0055] Optionally, the lifting mechanism 401 and the telescopic mechanism 402 are arranged vertically, and reinforcing plates are arranged outside the vertical ends of the lifting mechanism 401 and the telescopic mechanism 402, and the reinforcing plates are respectively connected to the lifting structure and the telescopic mechanism 402, thereby ensuring the strength of the lifting mechanism 401 and the telescopic mechanism 402.

[0056] like Figure 4 As shown, in a preferred embodiment of the present invention, the lifting mechanism 401 includes a lifting column 411 and a lifting cylinder 421; the lifting cylinder 421 is located in the lifting column 411, and the lifting column 411 includes a plurality of column sleeves that are sequentially sleeved. The lifting cylinder 421 is connected to the top of the column sleeve and is used to drive the plurality of column sleeves to rise or fall sequentially.

[0057] Optionally, the lifting column 411 and the base 500 may be connected in various ways, such as: connected by bolts, connected by connecting pins or clamped, etc. Preferably, the lifting column 411 and the base 500 are connected by bolts.

[0058] In this embodiment, the driving element of the lifting mechanism 401 is the lifting cylinder 421. Optionally, the column sleeve adopts a square sleeve, and the lifting end of the lifting cylinder 421 is connected to the innermost sleeve of the column sleeve. When the lifting cylinder 421 is turned on, the lifting end of the lifting cylinder 421 rises from the inner sleeve of the column sleeve in sequence until multiple column sleeves that are sequentially sleeved are extended respectively to increase the height of the lifting column 411; optionally, the connection method between the lifting cylinder 421 and the column sleeve can adopt a pin shaft connection, etc.

[0059] It should be noted that the lifting mechanism 401 provided in this embodiment is not limited to the lifting and reciprocating motion through the lifting cylinder 421. For example, the lifting and reciprocating motion can be driven by a lifting cylinder or a stepping motor, which falls within the protection scope of this embodiment and will not be repeated here.

[0060] In a preferred embodiment of the present invention, the telescopic mechanism 402 includes a first guide rail 412, a telescopic arm 422 and a telescopic cylinder 432; the first guide rail 412 is connected to the lifting column 411, and the first guide rail 412 and the lifting column 411 are vertically arranged, the telescopic arm 422 is arranged on the first guide rail 412, and is slidably connected to the first guide rail 412, and the two ends of the telescopic arm 422 are respectively connected to the locking mechanism 300 and the telescopic cylinder 432, and the telescopic cylinder 432 is used to drive the locking mechanism 300 to reciprocate in the horizontal direction through the telescopic arm 422.

[0061] Optionally, since the telescopic mechanism 402 moves in the horizontal direction, the telescopic mechanism 402 is connected to the lifting column 411 through a side surface of the first guide rail 412. At the same time, when the lifting column 411 is lifted or lowered, the first guide rail 412 is driven to perform lifting and reciprocating motion.

[0062] Among them, the telescopic arm 422 is slidingly connected to the first guide rail 412. Optionally, the telescopic arm 422 and the first guide rail 412 are connected through the direction of the slide rail and the slide groove, or the telescopic arm 422 and the first guide rail 412 are rollingly connected through the gear 305 and the rack, etc. Specifically, the telescopic cylinder 432 is fixedly connected to one end of the first guide rail 412 away from the latching mechanism 300, and the telescopic end of the telescopic cylinder 432 is connected to the telescopic arm 422, so that the telescopic arm 422 can slide along the first guide rail 412.

[0063] Optionally, in order to reduce the extension length of the first guide rail 412 , the telescopic arm 422 may be provided with an internal accommodating area, and the telescopic cylinder 432 is located in the internal accommodating area of ​​the telescopic arm 422 , so that the length of the first guide rail 412 only needs to meet the length of the telescopic arm 422 .

[0064] like Figure 3 As shown, in a preferred embodiment of the present invention, it also includes a fastening mechanism 600; the fastening mechanism 600 is arranged at one end of the telescopic arm 422 away from the locking mechanism 300, and one end of the fastening mechanism 600 is connected to the telescopic arm 422, and the other end of the fastening mechanism 600 is abutted against a side of the first guide rail 412 away from the telescopic arm 422, and the fastening mechanism 600 can move along the first guide rail 412, and the fastening mechanism 600 is used to fix the telescopic arm 422 on the first guide rail 412.

[0065] When the telescopic arm 422 slides outward along the first guide rail 412, the locking mechanism 300 will cause the telescopic arm 422 to have a tendency to tip over downward due to gravity. In order to ensure the overall stability of the telescopic arm 422, a fastening mechanism 600 is provided at the end of the telescopic arm 422 away from the locking mechanism 300. The fastening mechanism 600 can apply a fastening force to the telescopic arm 422 at the end of the telescopic arm 422 away from the locking mechanism 300, so that the telescopic arm 422 is tightly attached to the first guide rail 412, thereby ensuring the stability of the movement of the telescopic arm 422.

[0066] Furthermore, the fastening mechanism 600 can move with the movement of the telescopic arm 422, so the fastening mechanism 600 is fixedly connected to the telescopic arm 422, and the fastening mechanism 600 can abut against the side of the first guide rail 412 away from the telescopic arm 422. When the telescopic arm 422 has a force to tilt vertically upward, the abutment force between the fastening mechanism 600 and the first guide rail 412 will offset the upward tilting force of the telescopic arm 422, thereby allowing the telescopic arm 422 to be attached to the first guide rail 412; it should be noted that the fastening mechanism 600 and the first guide rail 412 are slidably connected.

[0067] In a preferred embodiment of the present invention, the fastening mechanism 600 includes an adjusting screw 601, a guide seat 602 and a roller 603; the guide seat 602 is covered on the outside of the telescopic arm 422, and both sides of the guide seat 602 extend to the side of the first guide rail 412 away from the telescopic arm 422, and the roller 603 is connected to the guide seat 602 through the adjusting screw 601, and the adjusting screw 601 is used to adjust the distance between the roller 603 and the first guide rail 412 so that the roller 603 abuts against the side of the first guide rail 412 away from the telescopic arm 422, and the roller 603 can roll along the first guide rail 412.

[0068] Optionally, the guide seat 602 can be used as a U-shaped seat, and the guide seat 602 is sleeved on the outside of the telescopic arm 422, and the guide seat 602 and the telescopic arm 422 are fixedly connected. At this time, both sides of the guide seat 602 will extend to the side of the first guide rail 412 away from the telescopic arm 422, and rollers 603 are respectively provided on both sides of the guide seat 602, and the rollers 603 can abut against the first guide rail 412, and the rollers 603 can roll relative to the first guide rail 412. Therefore, the guide seat 602 and the rollers 603 can apply a force to the telescopic arm 422 to fit the first guide rail 412, which can prevent the interlocking mechanism 300 of the telescopic arm 422 from tilting forward.

[0069] Since different construction conditions require different spacings between the roller 603 and the first guide rail 412, an adjusting screw 601 is provided on the guide seat 602, the first guide rail 412 is provided with a horizontal plate, and the horizontal plate is fixedly connected to the first guide rail 412, the adjusting screw 601 is located on the side of the first guide rail 412 with the telescopic arm 422, the adjusting screw 601 can rotate in the vertical direction relative to the guide seat 602, and the adjusting screw 601 can abut against the horizontal plate. When the adjusting screw 601 is moved upward or downward, When rotating downward, due to the limiting effect of the horizontal plate, the adjusting screw 601 cannot perform its own lifting movement, so the adjusting screw 601 will cause the guide seat 602 to perform a small upward or downward movement. At this time, the guide seat 602 will drive the roller 603 to move toward or away from the first guide rail 412. Therefore, the adjusting screw 601 can adjust the distance between the roller 603 and the first guide rail 412, and can enable the guide seat 602 to use the telescopic arm 422 under different working conditions, making the design more reasonable.

[0070] like Figure 5-Figure 8 As shown, in a preferred embodiment of the present invention, the snap mechanism 300 includes a driving mechanism 301, a guide cover 302, a snap adjustment mechanism 303, a second guide rail 304 and a gear 305; the second guide rail 304 is connected to the telescopic mechanism 402, the guide cover 302 is detachably connected to the snap adjustment mechanism 303, the snap adjustment mechanism 303 is slidably connected to the second guide rail 304, the driving mechanism 301 is transmission-connected to the snap adjustment mechanism 303 through the gear 305, and the driving mechanism 301 is used to drive the snap adjustment mechanism 303 to slide along the second guide rail 304 to adjust the opening and closing degree of the snap channel in the guide cover 302.

[0071] Among them, since the pipe columns have different specifications, in order to meet the needs of pipe columns of various specifications, the guide cover 302 is also provided with various specifications. Therefore, in order to ensure the replacement of guide covers 302 of various specifications, the guide cover 302 and the snap-on adjustment mechanism 303 are detachably connected. Optionally, the guide cover 302 can be connected to the snap-on adjustment mechanism 303 by bolt connection.

[0072] Preferably, the driving mechanism 301 can be driven by a motor, and the motor can drive the gear 305 to rotate, and the gear 305 can drive the snap adjustment mechanism 303 to slide relative to the second guide rail 304. Therefore, the snap channel in the guide cover 302 will adjust the opening and closing degree as the snap adjustment mechanism 303 moves, so as to better adapt to the docking of the pipe column.

[0073] In a preferred embodiment of the present invention, the guide cover 302 includes a first guide body 312, a second guide body 322, a first connecting frame 332 and a second connecting frame 342; the first guide body 312 and the second guide body 322 can be interlocked to form an interlocking channel, and the interlocking channel is provided with a step platform, which is used to be interlocked with the pipe column on the cava 100; the first guide body 312 is connected to the first connecting frame 332, and the second guide body 322 is connected to the second connecting frame 342, and the first connecting frame 332 and the second connecting frame 342 are respectively and individually connected to the interlocking adjustment mechanism 303, and the interlocking adjustment mechanism 303 is used to adjust the movement of the first guide body 312 and the second guide body 322 in the directions toward or away from each other.

[0074] Among them, the upper ends of the first guide body 312 and the second guide body 322 adopt a cone structure, and a narrow end is set at the end of the first guide body 312 and the second guide body 322 close to the cava 100, and the first guide body 312 and the second guide body 322 are funnel-shaped, so that the pipe string in the air can better enter the interlocking channel formed by the first guide body 312 and the second guide body 322; further, since the cone structure at the upper end of the interlocking channel plays a guiding role, it can provide a guiding effect when the suspended pipe string is not offset much from the center of the wellhead, and guide the pipe string to slide down into the interlocking channel.

[0075] Since the diameter of the pipe string in the cava 100 is larger than the diameter of the pipe string in the air that is about to be engaged, when the first guide body 312 and the second guide body 322 form an engaging channel to engage with the pipe string in the cava 100, the pipe string will extend into the engaging channel. By providing a step in the engaging channel, the step can be engaged with the pipe string coupling in the cava 100, thereby allowing the pipe string in the air to fall into the pipe string in the cava 100 for engagement.

[0076] Optionally, the first connecting frame 332 and the second connecting frame 342 adopt a rectangular frame, the first connecting frame 332 and the first guide body 312 are fixedly connected, the second connecting frame 342 and the second guide body 322 are fixedly connected, and the first connecting frame 332 and the second connecting frame 342 are respectively connected to the buckle adjustment mechanism 303.

[0077] In a preferred embodiment of the present invention, the guide cover 302 also includes a first preload spring 352, a second preload spring, a first guide rod 362 and a second guide rod; the first guide rod 362 is inserted on the first connecting frame 332 along the vertical direction, the first guide body 312 is connected to the first guide rod 362, the first preload spring 352 is sleeved on the outside of the first guide rod 362, and the two ends of the first preload spring 352 are respectively abutted against the first guide body 312, and the first preload spring 352 is used to buffer the impact force of the pipe column on the first guide body 312; the second guide rod is inserted on the second connecting frame 342 along the vertical direction, the second guide body 322 is connected to the second guide rod, the second preload spring is sleeved on the outside of the second guide rod, and the two ends of the second preload spring are respectively abutted against the second guide body 322, and the second preload spring is used to buffer the impact force of the pipe column on the second guide body 322.

[0078] Since the inner diameter of the buckle channel is slightly larger than the outer diameter of the pipe column, when the pipe column slides into the buckle channel, the pipe column will impact the first guide body 312 and the second guide body 322 to different degrees due to operational problems. In order to ensure the service life of the first guide body 312 and the second guide body 322, a first guide rod 362 and a second guide rod can be provided at the connection between the first connecting frame 332 and the second connecting frame 342 and the first guide body 312 and the second guide body 322. The first guide body 312 is connected to the first connecting frame 332 through the first guide rod 362, and the second guide body 322 is connected to the second connecting frame through the second guide rod 342 is connected, and a first preload spring 352 is sleeved on the outside of the first guide rod 362, and the two ends of the first preload spring 352 are respectively abutted against the first connecting frame 332, and a second preload spring is sleeved on the outside of the second guide rod, and the two ends of the second preload spring are respectively abutted against the second connecting frame 342, so that the first preload spring 352 and the second preload spring can provide preload force for the first connecting frame 332 and the second connecting frame 342 respectively, and when the pipe column enters the buckling channel formed by the first guide body 312 and the second guide body 322, the impact force of the pipe column on the first guide body 312 and the second guide body 322 can be buffered.

[0079] like Figure 8As shown, in a preferred embodiment of the present invention, the buckle adjustment mechanism 303 includes a first rack 313, a second rack 323, a first slider 333 and a second slider 343; the first slider 333 is connected to the first connecting frame 332, the second slider 343 is connected to the second connecting frame 342, and the first slider 333 and the second slider 343 are respectively slidably connected to the second guide rail 304, the first rack 313 is connected to the first slider 333, the second rack 323 is connected to the second slider 343, the gear 305 is respectively meshed and connected with the first rack 313 and the second rack 323, the gear 305 is used to drive the first rack 313 and the second rack 323 to move, and the first rack 313 and the second rack 323 are respectively located on both sides of the gear 305, so that the movement directions of the first rack 313 and the second rack 323 are opposite.

[0080] Since the snap adjustment mechanism 303 can adjust the opening and closing degree of the snap channel between the first guide body 312 and the second guide body 322, the first guide body 312 is connected to the first slider 333 through the first connecting frame 332, and the second guide body 322 is connected to the second slider 343 through the second connecting frame 342. The first slider 333 and the second slider 343 are respectively slidably connected to the second guide rail 304. Optionally, the second guide rail 304 adopts a T-shaped guide rail, and the first slider 333 and the second slider 343 are respectively provided with a first T-shaped slot and a second T-shaped slot. The first slider 333 and the second slider 343 are slidably connected through the T-shaped slot and the T-shaped guide rail, thereby satisfying the sliding of the first guide body 312 and the second guide body 322 along the second guide rail 304.

[0081] Furthermore, it can be known from the above that the driving element of the locking mechanism 300 adopts a motor. Optionally, the motor is connected to the gear 305 in a transmission manner, and the first rack 313 and the second rack 323 are respectively connected to the corresponding two sides of the gear 305. When the motor drives the gear 305 to rotate, the first rack 313 and the second rack 323 are located on both sides of the gear 305. Therefore, the movement directions of the first rack 313 and the second rack 323 are in opposite or opposite directions. Since the first slider 333 is connected to the first rack 313, and the second slider 343 is connected to the second rack 323, the rotation of the gear 305 is The kinetic energy can drive the first guide body 312 and the second guide body 322 to move in relative or opposite directions. When the pipe column in the cava 100 needs to be buckled, the first guide body 312 and the second guide body 322 are moved in opposite directions by turning on the motor, so that the inner diameter of the buckling channel is at the maximum value. When the pipe column in the air is located in the buckling channel, the through-hole air motor rotates in the opposite direction. At this time, the first guide body 312 and the second guide body 322 move in relative directions and gradually shrink to clamp the pipe column. Then, the motor is turned off and the adjustment device 400 is used to drive the pipe column to align with the pipe column in the cava 100 to complete the buckling connection.

[0082] In a preferred embodiment of the present invention, the snap adjustment mechanism 303 also includes a first adjustment bolt 353 and a second adjustment bolt 363; the first connecting frame 332 is connected to the first slider 333 through the first adjustment bolt 353, and the first adjustment bolt 353 is used to adjust the movement of the first connecting frame 332 along the extension direction of the second guide rail 304; the second connecting frame 342 is connected to the second slider 343 through the second adjustment bolt 363, and the second adjustment bolt 363 is used to adjust the movement of the second connecting frame 342 along the extension direction of the second guide rail 304.

[0083] Since the adjustment range of the first guide body 312 and the second guide body 322 by the rotation of the motor is relatively wide, and the rotation adjustment of the motor can only realize the opening and closing of the first guide body 312 and the second guide body 322. However, when there is a deviation between the center of the interlocking channel and the center of the wellhead, a first adjusting bolt 353 can be provided on the first connecting frame 332, and a second adjusting bolt 363 can be provided on the second connecting frame 342. The first adjusting bolt 353 and the second adjusting bolt 363 are fine-tuning structures, which can perform fine-tuning of the first guide body 312 and the second guide body 322 in a small range when the motor stops, so as to better adjust the left and right displacement of the interlocking channel, so as to meet the requirement that the interlocking channel and the center of the wellhead are in a straight line. Furthermore, the first adjusting bolt 353 and the second adjusting bolt 363 can also fine-tune the opening and closing degree of the interlocking channel, making the design more perfect.

[0084] In this embodiment, the action sequence can be: the driving mechanism 301 drives the guide cover 302 to open, the telescopic cylinder 432 drives the telescopic arm 422 to move toward the center of the wellhead, and after reaching the center of the wellhead, the driving mechanism 301 drives the guide cover 302 to close, and the lifting cylinder 421 drives the lifting column 411 to descend, and the pipe column is lowered to be connected with the pipe column in the slip 100 for buckling. After the buckling is completed, the driving mechanism 301 drives the guide cover 302 to open, the telescopic cylinder 432 drives the telescopic arm 422 to retreat and reset, and the lifting cylinder 421 drives the lifting column 411 to rise, thus completing one action process, and repeating this cycle.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A buckle device, characterized in that: include: Slips and buckle bodies; The buckle body is connected to the slip so that the buckle body can move integrally with the slip. The buckle body is provided with a buckle channel, which is arranged corresponding to the coupling position of the slip and is used to limit the connection of the pipe column at the coupling position of the slip. The buckle body comprises a buckle mechanism, an adjustment device and a base; One end of the base is connected to the slip, and the other end of the base is connected to the buckle mechanism through the adjusting device, the adjusting device is used to adjust the position of the buckle mechanism relative to the slip, and the buckle channel is arranged on the buckle mechanism; The adjusting device comprises a lifting mechanism and a telescopic mechanism; The two ends of the lifting mechanism are respectively connected to the base and the telescopic mechanism, and the lifting mechanism is used to drive the telescopic mechanism to move up and down reciprocatingly; One end of the telescopic mechanism is connected to the buckle mechanism, and the telescopic mechanism is used to drive the buckle mechanism to reciprocate along the horizontal direction; The buckle mechanism comprises a driving mechanism, a guide cover, a buckle adjustment mechanism, a second guide rail and a gear; The second guide rail is connected to the telescopic mechanism, the guide cover is detachably connected to the snap-on adjustment mechanism, the snap-on adjustment mechanism is slidably connected to the second guide rail, the driving mechanism is transmission-connected to the snap-on adjustment mechanism through the gear, and the driving mechanism is used to drive the snap-on adjustment mechanism to slide along the second guide rail to adjust the opening and closing degree of the snap-on channel in the guide cover.

2. The buckle device according to claim 1, characterized in that: The lifting mechanism comprises a lifting column and a lifting cylinder; The lifting cylinder is located in the lifting column, and the lifting column includes a plurality of column sleeves which are sleeved in sequence. The lifting cylinder is connected to the top of the column sleeve and is used to drive the plurality of column sleeves to rise or fall in sequence.

3. The buckle device according to claim 2, characterized in that: The telescopic mechanism comprises a first guide rail, a telescopic arm and a telescopic cylinder; The first guide rail is connected to the lifting column, and the first guide rail and the lifting column are vertically arranged. The telescopic arm is arranged on the first guide rail and is slidably connected to the first guide rail. Both ends of the telescopic arm are respectively connected to the locking mechanism and the telescopic cylinder. The telescopic cylinder is used to drive the locking mechanism to reciprocate in the horizontal direction through the telescopic arm.

4. The buckle device according to claim 3, characterized in that: Also included is a fastening mechanism; The fastening mechanism is arranged at one end of the telescopic arm away from the locking mechanism, and one end of the fastening mechanism is connected to the telescopic arm, and the other end of the fastening mechanism abuts against a side of the first guide rail away from the telescopic arm, and the fastening mechanism can move along the first guide rail, and the fastening mechanism is used to fix the telescopic arm in the first guide rail.

5. The buckle device according to claim 4, characterized in that: The fastening mechanism comprises an adjusting screw, a guide seat and a roller; The guide seat cover is arranged on the outside of the telescopic arm, and both sides of the guide seat extend to the side of the first guide rail away from the telescopic arm, and the roller is connected to the guide seat through the adjusting screw, and the adjusting screw is used to adjust the distance between the roller and the first guide rail so that the roller abuts against the side of the first guide rail away from the telescopic arm, and the roller can roll along the first guide rail.

6. The buckle device according to claim 5, characterized in that: The guide cover comprises a first guide body, a second guide body, a first connecting frame and a second connecting frame; The first guide body and the second guide body can be buckled to form the buckled channel, and the buckled channel is provided with a stepped platform, and the stepped platform is used to be buckled with the pipe column on the slip; The first guide body is connected to the first connecting frame, the second guide body is connected to the second connecting frame, the first connecting frame and the second connecting frame are respectively and individually connected to the snap adjustment mechanism, and the snap adjustment mechanism is used to adjust the movement of the first guide body and the second guide body in the directions toward or away from each other.

7. The buckle device according to claim 6, characterized in that: The guide cover also includes a first preload spring, a second preload spring, a first guide rod and a second guide rod; The first guide rod is inserted on the first connecting frame along the vertical direction, the first guide body is connected to the first guide rod, the first preload spring is sleeved on the outside of the first guide rod, and the two ends of the first preload spring are respectively in contact with the first guide body, and the first preload spring is used to buffer the impact force of the pipe column on the first guide body; The second guide rod is inserted on the second connecting frame along the vertical direction, the second guide body is connected to the second guide rod, the second pre-tensioning spring is sleeved on the outside of the second guide rod, and the two ends of the second pre-tensioning spring are respectively abutted against the second guide body, and the second pre-tensioning spring is used to buffer the impact force of the pipe column on the second guide body.

8. The buckle device according to claim 7, characterized in that: The buckle adjustment mechanism includes a first rack, a second rack, a first slider and a second slider; The first slider is connected to the first connecting frame, the second slider is connected to the second connecting frame, and the first slider and the second slider are respectively slidably connected to the second guide rail, the first rack is connected to the first slider, the second rack is connected to the second slider, and the gear is meshed with the first rack and the second rack respectively, the gear is used to drive the first rack and the second rack to move, and the first rack and the second rack are respectively located on both sides of the gear so that the movement directions of the first rack and the second rack are opposite.

9. The buckle device according to claim 8, characterized in that: The buckle adjustment mechanism also includes a first adjustment bolt and a second adjustment bolt; The first connecting frame is connected to the first sliding block through the first adjusting bolt, and the first adjusting bolt is used to adjust the movement of the first connecting frame along the extension direction of the second guide rail; The second connecting frame is connected to the second sliding block via the second adjusting bolt, and the second adjusting bolt is used to adjust the movement of the second connecting frame along the extension direction of the second guide rail.

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