Power slip with guiding and righting mechanism and elevator
By introducing power tile and tile with guide straightening mechanism into the tile lifting card, the problems of offset wear and guidance ring design of the drill tool are solved, and the center straightening and multi-spec adaptation of the drill tool are achieved, reducing wear and tear and maintenance difficulties have improved economic benefits.
Patent Information
- Application Number
- CN202411320596.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In petroleum exploration or production operations, the drilling tool is worn out at the wellhead offset, the existing guide ring design is complex and does not adapt to multiple specifications of pipes, difficult maintenance, and accelerate wear during rotation.
Design a power tile and lifting card with a guided straightening mechanism, including an open-closed tile lifting card main body, the top and bottom are connected to the upper and lower straightening mechanism respectively, and use adjustable upper and lower guide racks. , the movement of the guide roller is realized through the driving unit, forming a guide ring structure, adapting to drill tools of different sizes, and reducing wear when the drill tools rotate.
The center of the drill tool is achieved, which reduces wear and tear, adapts to multiple specifications of pipe tools, simplifies equipment replacement, reduces risks, and improves economic benefits.
Smart Images
Figure CN119102514A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a power slip and an elevator with a guide and righting mechanism, belonging to the technical field of elevators. Background Art
[0002] In oil exploration or production operations, slip elevators are usually important equipment for lifting and holding pipes in oil drilling and workover operations.
[0003] The Chinese utility model patent with announcement number CN219365971U discloses a high-load large-diameter multi-diameter slip-type elevator, including an elevator body, the elevator body includes a plurality of slip bodies, the plurality of slip bodies are arranged in a ring array, and the slip bodies are connected by steel plate chains. In the utility model, the elevator body includes a plurality of slip bodies, and the slip bodies are connected by steel plate chains. The elevator body structure is a long chain body, which makes the utility model more advantageous for large-diameter loads. Compared with traditional multi-piece slips, it is light and easy to install; a diameter adjustment component is connected between the outer wall of the slip body and the adjacent steel plate chain, which can adjust the length of the steel plate chain, thereby adjusting the overall circumference of the elevator body, which is convenient for assembling drill columns of different diameters. However, the following shortcomings still exist: During the drilling process, the drill string will deviate from the wellhead center because the pipe is not supported in its diameter direction. During the process of pulling the drill string, the deviated pipe will contact the elevator or slip, causing hard friction and causing wear of the drill string.
[0004] At the same time, when lifting the pipe, the pipe coupling may come into contact with the slip, causing damage to the slip and resulting in a safety accident.
[0005] At present, there is a guide ring design to increase the guiding effect. Due to the large number of pipe models, it is troublesome to replace various guide rings. Each pipe needs to be equipped with a corresponding guide ring. The guide ring is large in size and heavy in weight. If the mud and debris generated during the drilling process are added, it may cause problems such as difficulty in replacing equipment and maintenance.
[0006] If the pipe is a drill pipe, when the pipe rotates, it will contact the elevator or slip, which will accelerate the wear of the drill pipe or the guide device. Summary of the invention
[0007] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, a power slip and an elevator with a guide and straightening mechanism are provided to solve the problem of wellhead deviation of drilling tools in the above-mentioned background oil exploration or production operations; to adapt to various specifications of pipes and tools, and to center the pipes and tools with the wellhead; and to prevent the wear of drilling tools caused by the rotation of drilling tools, and the wear of the guide mechanism. The risk caused by the eccentricity of drilling tools is reduced, the drilling tools of various specifications are adapted, the time of replacing equipment is saved, and the economic benefits are increased.
[0008] The technical solution adopted by the present invention to solve the above-mentioned problem is: a power slip and elevator with a guide and righting mechanism, comprising a slip elevator body, the slip elevator body is an open and close type, and a lifting lug is arranged on the slip elevator body, characterized in that: the top and the bottom of the slip elevator body are respectively connected to an upper righting mechanism and a lower righting mechanism; There are two upper righting mechanisms, which are circumferentially distributed around the vertical center line of the slip elevator body. The upper righting mechanism comprises an upper cover body, an upper guide plate, an upper drive unit and a plurality of upper guide racks, wherein the upper guide plate is fixedly arranged on the top of the upper cover body, and the plurality of upper guide racks are circumferentially distributed on the upper cover body with the vertical center line of the slip elevator body as the center, the upper guide rack is slidably connected to the upper cover body, and the plurality of upper guide racks are all connected to the upper drive unit, and the upper drive unit is used to drive the upper guide rack to move toward or away from the vertical center line of the slip elevator body along the length direction of the upper guide rack, and one end of the upper guide rack close to the vertical center line of the slip elevator body is rotatably connected to the upper guide roller, and the rotation center line of the upper guide roller is parallel to the vertical center line of the slip elevator body; The upper cover body is in a semicircular shape, and the shape of the upper guide plate matches the shape of the upper cover body; The two upper covers are combined to form a circular ring coaxial with the vertical center line of the main body of the slip elevator; The upper cover is rotatably connected to the main body of the slip elevator; The lower righting mechanism comprises a lower cover body, a lower guide plate, a lower driving unit and a plurality of lower guide racks, the lower guide plate being fixedly arranged on the top of the lower cover body, the lower cover body being detachably fixedly arranged on the main body of the slip elevator, the lower cover body and the lower guide plate forming as a whole annular structure having a notch in the circumferential direction, the formed annular structure being coaxial with the main body of the slip elevator, a plurality of lower guide racks being circumferentially distributed on the lower cover body with the vertical center line of the main body of the slip elevator as the center, the lower guide rack being slidably connected to the lower cover body, the plurality of lower guide racks being connected to the lower driving unit, the lower driving unit being used for driving the lower guide rack to move toward or away from the vertical center line of the main body of the slip elevator along the length direction of the lower guide rack, one end of the lower guide rack close to the vertical center line of the main body of the slip elevator being rotatably connected to the lower guide roller, the rotation center line of the lower guide roller being parallel to the vertical center line of the main body of the slip elevator.
[0009] Preferably, a connecting block is hingedly connected to the outer peripheral wall of the upper cover body, and the connecting block is fixedly connected to the slip elevator body.
[0010] Preferably, the top and bottom ends of the upper guide roller are tapered, and the end diameter of the upper guide roller is smaller than the middle diameter of the upper guide roller. The top and bottom ends of the lower guide roller are tapered, and the end diameter of the lower guide roller is smaller than the middle diameter of the lower guide roller.
[0011] Preferably, the upper cover body is provided with a plurality of upper first sliding grooves and a plurality of upper second sliding grooves, the plurality of upper first sliding grooves and the plurality of upper second sliding grooves each correspond one-to-one to a plurality of upper guide racks, the upper guide racks are slidably connected to the upper first sliding grooves and the upper second sliding grooves respectively, and a plurality of lower sliding grooves are provided under the lower cover body, the plurality of lower sliding grooves correspond one-to-one to a plurality of lower guide racks, and the lower guide racks are slidably connected to the lower sliding grooves.
[0012] Preferably, the upper drive unit includes an upper transmission wheel, which is located in the upper cover body and is in a semicircular shape. The upper transmission wheel is coaxially arranged with the vertical center line of the cava elevator body, and is rotatably connected to the upper cover body. Upper meshing teeth are arranged on the outer peripheral wall of the upper transmission wheel, an upper motor is fixedly arranged on the upper guide plate, an upper gear is installed on the output end of the upper motor, the upper gear is meshed with the upper meshing teeth, and upper worm gear teeth are arranged on the top of the upper transmission wheel, and each upper guide rack is meshed with the upper worm gear teeth.
[0013] Preferably, an upper guide groove is provided at the bottom of the upper transmission wheel, and the upper guide groove is in a semicircular shape. The upper guide groove is coaxially arranged with the vertical center line of the cava elevator body, and a plurality of upper guide wheels are provided in the upper guide groove. The plurality of upper guide wheels are all installed on the upper cover body, and the upper guide wheels are used to support and limit the upper transmission wheel from rotating around the vertical center line of the cava elevator body.
[0014] Preferably, a fork-shaped first opening is provided at one end of the upper guide rack, and the upper guide roller is located in the first opening.
[0015] Preferably, the lower driving unit includes a lower transmission wheel, which is located in the lower cover body, and is a ring-shaped wheel with a notch. The lower transmission wheel is coaxially arranged with the vertical center line of the cava elevator body, and is rotatably connected to the lower cover body. Lower meshing teeth are arranged under the outer peripheral wall of the lower transmission wheel, and a lower motor is fixedly arranged under the lower guide plate. A lower gear is installed at the output end of the lower motor, and the lower gear meshes with the lower meshing teeth. A plurality of lower worm gear teeth are arranged on the top of the lower transmission wheel, and the plurality of lower worm gear teeth correspond one-to-one to the plurality of lower guide racks, and the lower guide rack meshes with the lower worm gear teeth.
[0016] Preferably, a lower guide groove is provided at the bottom of the lower transmission wheel, and the lower guide groove is annular with a notch, and the lower guide groove is coaxially arranged with the vertical center line of the cava elevator body, and a plurality of lower guide wheels are provided in the lower guide groove, and the plurality of lower guide wheels are all installed on the lower cover body, and the lower guide wheels are used to support and limit the rotation of the lower transmission wheel around the vertical center line of the cava elevator body.
[0017] Preferably, a fork-shaped second opening is provided at one end of the lower guide rack, and the lower guide roller is located in the second opening.
[0018] Compared with the prior art, the advantages of the present invention are: 1. The slip elevator has an opening and closing function, and the drilling tool enters the slip elevator through the side; 2. The drilling tool can also enter the slip elevator along the axial direction of the slip elevator and has a guiding function; 3. When the drill bit rotates, the slip elevator has a follow-up roller to avoid relative movement with the drill bit, reduce wear, and also have the effect of straightening the drill bit; 4. The slip elevator can accommodate drilling tools of different sizes without replacing the guide device, and can quickly change the size to meet the economic and efficiency requirements. 5. The equipment meets the centering requirements. The drill bit needs to be straightened to the center of the wellhead to avoid contact between the drill bit and the non-contact parts of the chuck or elevator, which may cause damage or accidents to other equipment. 6. It can be used as the slips of the elevator, combining the functions of holding and lifting equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is an exploded schematic diagram of a power slip and an elevator with a guide and righting mechanism of the present invention; Figure 2 is a three-dimensional diagram of the upper righting mechanism; Figure 3 This is an exploded view of the upper righting mechanism; Figure 4 It is a schematic diagram of the connection structure between the upper transmission wheel and the upper guide rack; Figure 5 It is a top view schematic diagram of the upper righting mechanism before righting; Figure 6 It is a top view schematic diagram of the upper righting mechanism after righting; Figure 7 It is a transmission schematic diagram of the upper righting mechanism; Figure 8 This is the guiding principle diagram of the upper righting mechanism; Fig. 9 It is a three-dimensional diagram of the lower righting mechanism; Fig.10This is an exploded view of the lower righting mechanism; Fig.11 It is a schematic diagram of the connection structure between the lower transmission wheel and the lower guide rack; Fig.12 It is a top view schematic diagram of the lower righting mechanism before righting; Fig.13 It is a top view schematic diagram of the lower righting mechanism after righting; Fig.14 It is the transmission schematic diagram of the lower righting mechanism; Fig.15 This is the guiding principle diagram of the lower righting mechanism.
[0020] in: Slip elevator body 1, lifting lug 2, upper righting mechanism 3, lower righting mechanism 4, drilling tool 5; An upper cover 31, an upper guide plate 32, an upper driving unit 33, an upper guide rack 34, an upper guide roller 35, a connecting block 36, an upper first sliding groove 37, and an upper second sliding groove 38; Upper transmission wheel 331, upper meshing teeth 332, upper motor 333, upper gear 334, upper worm gear 335, upper guide groove 336, upper guide wheel 337; A lower cover 41, a lower guide plate 42, a lower driving unit 43, a lower guide rack 44, a lower guide roller 45, and a lower sliding groove 46; Lower transmission wheel 431 , lower meshing teeth 432 , lower motor 433 , lower gear 434 , lower worm gear 435 , lower guide groove 436 , lower guide wheel 437 . DETAILED DESCRIPTION
[0021] like Figure 1-15 As shown, a power slip and elevator with a guide and righting mechanism in this embodiment comprises a slip elevator body 1, the slip elevator body 1 is an open and close type, a lifting lug 2 is provided on the slip elevator body 1, the lifting lug 2 is used to lift a drilling tool 5, and an upper righting mechanism 3 and a lower righting mechanism 4 are connected to the top and bottom of the slip elevator body 1 respectively; The upper righting mechanisms 3 are provided with two, and the two upper righting mechanisms 3 are distributed circumferentially with the vertical center line of the slip elevator body 1 as the center; The upper straightening mechanism 3 comprises an upper cover body 31, an upper guide plate 32, an upper driving unit 33 and a plurality of upper guide racks 34, wherein the upper guide plate 32 is detachably fixedly arranged on the top of the upper cover body 31, and a plurality of upper guide racks 34 are circumferentially distributed on the upper cover body 31 with the vertical center line of the slip elevator body 1 as the center, and the specific number of the upper guide racks 34 is four, and the upper guide racks 34 are slidably connected to the upper cover body 31, and the plurality of upper guide racks 34 are all connected to the upper driving unit 33, and the upper driving unit 33 is used to drive the upper guide racks 34 to move toward or away from the vertical center line of the slip elevator body 1 along the length direction of the upper guide racks 34, and one end of the upper guide racks 34 close to the vertical center line of the slip elevator body 1 is rotatably connected to the upper guide roller 35, and the rotation center line of the upper guide roller 35 is parallel to the vertical center line of the slip elevator body 1; The upper cover body 31 is in a semicircular shape, and the shape of the upper guide plate 32 matches the shape of the upper cover body 31; The two upper covers 31 are combined to form a circular ring coaxial with the vertical center line of the slip elevator body 1; The upper cover 31 is rotatably connected to the main body 1 of the slip elevator. Specifically, a connecting block 36 is hingedly connected to the outer peripheral wall of the upper cover 31, and the connecting block 36 is fixedly connected to the main body 1 of the slip elevator. During operation, the main body 1 of the slip elevator is first in an open state, and at the same time, the two upper covers 31 are rotated to make the two upper covers 31 in an open state, and the drilling tool 5 enters the main body 1 of the slip elevator from the side thereof, and at this time, the drilling tool 5 is located between the two upper covers 31, and then the main body 1 of the slip elevator is in a closed state, so that the main body 1 of the slip elevator holds the drilling tool 5, and at the same time, the two upper covers 31 are rotated to reset the two upper covers 31, and then, the upper guide rack 34 is driven by the upper driving unit 33 to move the upper guide roller 35 toward the vertical center line close to the main body 1 of the slip elevator, and the upper guide roller 35 is abutted against the drilling tool 5, and each upper guide roller 35 forms a guide ring structure, which has the effect of straightening the drilling tool 5; Of course, the drilling tool 5 can also enter the two upper covers 31 and the slip elevator body 1 in sequence along the axial direction of the slip elevator body 1; The top and bottom ends of the upper guide roller 35 are both tapered, and the end diameter of the upper guide roller 35 is smaller than the middle diameter of the upper guide roller 35. The upper straightening mechanism 3 is used during the hanging card. When the drilling tool 5 moves up, it moves up along the taper of the upper guide roller 35. The upper cover body 31 is provided with a plurality of upper first sliding grooves 37 and a plurality of upper second sliding grooves 38, and the plurality of upper first sliding grooves 37 and the plurality of upper second sliding grooves 38 correspond to the plurality of upper guide racks 34 one by one, and the upper guide racks 34 are respectively slidably connected with the upper first sliding grooves 37 and the upper second sliding grooves 38, and the upper guide racks 34 are respectively matched with the upper first sliding grooves 37 and the upper second sliding grooves 38 to achieve the effect of moving and guiding the upper guide racks 34, and provide anti-torsion force; The upper drive unit 33 includes an upper transmission wheel 331, which is located in the upper cover 31 and is in a semicircular shape. The upper transmission wheel 331 is coaxially arranged with the vertical center line of the slip elevator body 1, and is rotatably connected with the upper cover 31. An upper meshing tooth 332 is provided on the outer peripheral wall of the upper transmission wheel 331, and an upper motor 333 is fixedly provided on the upper guide plate 32. An upper gear 334 is installed at the output end of the upper motor 333, and the upper gear 334 meshes with the upper meshing tooth 332. An upper worm gear 335 is provided on the top of the upper transmission wheel 331, and each upper guide rack 34 meshes with the upper worm gear 335. When the upper motor 333 is started, the upper gear 334 is rotated, and the rotation of the upper gear 334 drives the upper transmission wheel 331 to rotate. The rotation of the upper transmission wheel 331 drives the upper guide rack 34 to move toward or away from the vertical center line of the slip elevator body 1 along the length direction of the upper guide rack 34 through the upper worm gear 335; An upper guide groove 336 is provided at the bottom of the upper transmission wheel 331. The upper guide groove 336 is in a semicircular shape and is coaxially arranged with the vertical center line of the slip elevator body 1. A plurality of upper guide wheels 337 are provided in the upper guide groove 336. The plurality of upper guide wheels 337 are all mounted on the upper cover 31. The upper guide wheels 337 are used to support and limit the upper transmission wheel 331 from rotating around the vertical center line of the slip elevator body 1. One end of the upper guide rack 34 is provided with a fork-shaped first opening, and the upper guide roller 35 is located in the first opening; The lower righting mechanism 4 comprises a lower cover 41, a lower guide plate 42, a lower driving unit 43 and a plurality of lower guide racks 44, wherein the lower guide plate 42 is detachably fixedly arranged on the top of the lower cover 41, and the lower cover 41 is detachably fixedly arranged on the main body 1 of the slip elevator, and the lower cover 41 and the lower guide plate 42 form an annular structure with a notch in the circumferential direction as a whole, and the formed annular structure is coaxial with the main body 1 of the slip elevator, and the plurality of lower guide racks 44 are circumferentially distributed on the lower cover 41 with the vertical center line of the main body 1 of the slip elevator as the center. The specific number of the lower guide racks 44 is five, the lower guide racks 44 are slidably connected to the lower cover body 41, and the multiple lower guide racks 44 are all connected to the lower driving unit 43, and the lower driving unit 43 is used to drive the lower guide racks 44 to move toward or away from the vertical center line of the slip elevator body 1 along the length direction of the lower guide racks 44, and one end of the lower guide racks 44 close to the vertical center line of the slip elevator body 1 is rotatably connected to the lower guide roller 45, and the rotation center line of the lower guide roller 45 is parallel to the vertical center line of the slip elevator body 1; During operation, the main body 1 of the slip elevator is first in an open state, and the drilling tool 5 enters the main body 1 of the slip elevator from the side thereof, and at this time, the drilling tool 5 also enters the annular hole of the lower cover 41 from the notch of the annular structure, and then, the lower guide rack 44 drives the lower guide roller 45 to move toward the vertical center line of the main body 1 of the slip elevator through the lower driving unit 43, and makes the lower guide roller 45 abut against the drilling tool 5, and each lower guide roller 45 forms a guide ring structure, which has the effect of straightening the drilling tool 5; The top and bottom ends of the lower guide roller 45 are both tapered, and the end diameter of the lower guide roller 45 is smaller than the middle diameter of the lower guide roller 45. The lower straightening mechanism 4 is used during the hanging process. When the drilling tool 5 moves up, it moves up along the tapered lower guide roller 45. A plurality of lower sliding grooves 46 are provided under the lower cover 41, and the plurality of lower sliding grooves 46 correspond to the plurality of lower guide racks 44 one by one. The lower guide racks 44 are slidably connected with the lower sliding grooves 46. Through the cooperation between the lower guide racks 44 and the lower sliding grooves 46, the movement and guiding effect of the lower guide racks 44 is achieved, and anti-torsion force is provided; The lower driving unit 43 includes a lower transmission wheel 431, which is located in the lower cover body 41. The lower transmission wheel 431 is a ring with a notch. The lower transmission wheel 431 is coaxially arranged with the vertical center line of the slip elevator body 1, and the lower transmission wheel 431 is rotatably connected with the lower cover body 41. A lower meshing tooth 432 is arranged under the outer peripheral wall of the lower transmission wheel 431. A lower motor 433 is fixedly arranged under the lower guide plate 42. A lower gear 434 is installed at the output end of the lower motor 433. The lower gear 434 meshes with the lower meshing tooth 432. A plurality of lower worm gear teeth 435 are arranged on the top of the lower transmission wheel 431. The plurality of lower worm gear teeth 435 correspond to the plurality of lower guide racks 44 one by one, and the lower guide racks 44 mesh with the lower worm gear teeth 435. When the lower motor 433 is started, the lower gear 434 is rotated, and the rotation of the lower gear 434 drives the lower transmission wheel 431 to rotate. The rotation of the lower transmission wheel 431 drives the lower guide rack 44 to move toward or away from the vertical center line of the slip elevator body 1 along the length direction of the lower guide rack 44 through the lower worm gear 435; A lower guide groove 436 is provided at the bottom of the lower transmission wheel 431. The lower guide groove 436 is annular with a notch. The lower guide groove 436 is coaxially arranged with the vertical center line of the slip elevator body 1. A plurality of lower guide wheels 437 are provided in the lower guide groove 436. The plurality of lower guide wheels 437 are all mounted on the lower cover body 41. The lower guide wheels 437 are used to support and limit the lower transmission wheel 431 from rotating around the vertical center line of the slip elevator body 1. A fork-shaped second opening is provided at one end of the lower guide rack 44, and the lower guide roller 45 is located in the second opening; Here, the moving distance of the upper guide roller 35 and the lower guide roller 45 is controlled to be suitable for drilling tools 5 of different sizes; In summary, in the first aspect, the slip elevator has an opening and closing function, and the drilling tool 5 enters the slip elevator through the side; Secondly, the drilling tool 5 can also enter the slip elevator along the axial direction of the slip elevator and has a guiding function; Thirdly, when the drilling tool 5 rotates, the slip elevator has a follower roller to avoid relative movement with the drilling tool 5 when in contact, reduce wear, and also have the effect of straightening the drilling tool 5; Fourthly, the slip elevator can simultaneously meet the requirements of drilling tools 5 of different sizes without replacing the guide device, and can meet the requirements of rapid size change, meeting the economic and efficiency requirements; Fifthly, the equipment meets the centering requirements, and the drilling tool 5 needs to be straightened to the center of the wellhead to avoid contact between the drilling tool 5 and the non-contact parts of the chuck or the elevator, which may cause damage or accidents to other equipment; Sixthly, the slips can be used as elevators, combining the functions of holding and lifting equipment.
[0022] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims
1. A power slip and elevator with a guide and righting mechanism, comprising a slip elevator body (1), the slip elevator body (1) being of an openable type, and a lifting lug (2) being provided on the slip elevator body (1), characterized in that: The top and bottom of the slip elevator body (1) are respectively connected to an upper righting mechanism (3) and a lower righting mechanism (4); Two upper righting mechanisms (3) are provided, and the two upper righting mechanisms (3) are distributed circumferentially with the vertical center line of the slip elevator body (1) as the center; The upper straightening mechanism (3) comprises an upper cover body (31), an upper guide plate (32), an upper drive unit (33) and a plurality of upper guide racks (34); the upper guide plate (32) is fixedly arranged on the top of the upper cover body (31); the plurality of upper guide racks (34) are circumferentially distributed on the upper cover body (31) with the vertical center line of the slip elevator body (1) as the center; the upper guide racks (34) are slidably connected to the upper cover body (31); and the plurality of upper guide racks (34) are all connected to an upper drive unit (33), the upper drive unit (33) being used to drive an upper guide rack (34) to move along the length direction of the upper guide rack (34) toward or away from the vertical center line of the slip elevator body (1), one end of the upper guide rack (34) close to the vertical center line of the slip elevator body (1) is rotatably connected to an upper guide roller (35), and the rotation center line of the upper guide roller (35) is parallel to the vertical center line of the slip elevator body (1); The upper cover body (31) is in the shape of a semicircular ring, and the shape of the upper guide plate (32) matches the shape of the upper cover body (31); The two upper cover bodies (31) are combined to form a circular ring shape coaxial with the vertical center line of the slip elevator body (1); The upper cover (31) is rotatably connected to the slip elevator body (1); The lower straightening mechanism (4) comprises a lower cover body (41), a lower guide plate (42), a lower drive unit (43) and a plurality of lower guide racks (44); the lower guide plate (42) is fixedly arranged on the top of the lower cover body (41); the lower cover body (41) is detachably fixedly arranged on the main body (1) of the slip elevator; the lower cover body (41) and the lower guide plate (42) as a whole form an annular structure having a notch in the circumferential direction; the formed annular structure is coaxial with the main body (1) of the slip elevator; the plurality of lower guide racks (44) are circumferentially distributed on the lower cover body with the vertical center line of the main body (1) of the slip elevator as the center. (41), the lower guide rack (44) is slidably connected to the lower cover body (41), and the plurality of lower guide racks (44) are all connected to the lower driving unit (43). The lower driving unit (43) is used to drive the lower guide rack (44) to move along the length direction of the lower guide rack (44) toward or away from the vertical center line of the cava elevator body (1). One end of the lower guide rack (44) close to the vertical center line of the cava elevator body (1) is rotatably connected to the lower guide roller (45), and the rotation center line of the lower guide roller (45) is parallel to the vertical center line of the cava elevator body (1).
2. A power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: A connecting block (36) is hingedly connected to the outer peripheral wall of the upper cover body (31), and the connecting block (36) is fixedly connected to the slip elevator body (1).
3. A power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: The top and bottom ends of the upper guide roller (35) are both tapered, and the end diameter of the upper guide roller (35) is smaller than the middle diameter of the upper guide roller (35). The top and bottom ends of the lower guide roller (45) are both tapered, and the end diameter of the lower guide roller (45) is smaller than the middle diameter of the lower guide roller (45).
4. The power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: The upper cover body (31) is provided with a plurality of upper first sliding grooves (37) and a plurality of upper second sliding grooves (38), the plurality of upper first sliding grooves (37) and the plurality of upper second sliding grooves (38) are in one-to-one correspondence with the plurality of upper guide racks (34), the upper guide racks (34) are respectively slidably connected with the upper first sliding grooves (37) and the upper second sliding grooves (38), and the lower cover body (41) is provided with a plurality of lower sliding grooves (46), the plurality of lower sliding grooves (46) are in one-to-one correspondence with the plurality of lower guide racks (44), and the lower guide racks (44) are slidably connected with the lower sliding grooves (46).
5. The power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: The upper drive unit (33) comprises an upper transmission wheel (331), the upper transmission wheel (331) being located inside the upper cover body (31), the upper transmission wheel (331) being in the shape of a semicircle, the upper transmission wheel (331) being coaxially arranged with the vertical center line of the slip elevator body (1), the upper transmission wheel (331) being rotationally connected with the upper cover body (31), the outer peripheral wall of the upper transmission wheel (331) being provided with upper meshing teeth (332), the upper guide plate (32) being fixedly provided with an upper motor (333), the output end of the upper motor (333) being provided with an upper gear (334), the upper gear (334) being meshed with the upper meshing teeth (332), the top of the upper transmission wheel (331) being provided with upper worm gear teeth (335), and each upper guide rack (34) being meshed with the upper worm gear teeth (335).
6. A power slip and elevator with a guiding and straightening mechanism according to claim 5, characterized in that: An upper guide groove (336) is provided at the bottom of the upper transmission wheel (331). The upper guide groove (336) is in the shape of a semicircle. The upper guide groove (336) is coaxially arranged with the vertical center line of the slip elevator body (1). A plurality of upper guide wheels (337) are provided in the upper guide groove (336). The plurality of upper guide wheels (337) are all mounted on the upper cover body (31). The upper guide wheels (337) are used to support and limit the upper transmission wheel (331) from rotating around the vertical center line of the slip elevator body (1).
7. The power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: A fork-shaped first opening is provided at one end of the upper guide rack (34), and the upper guide roller (35) is located in the first opening.
8. The power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: The lower driving unit (43) comprises a lower transmission wheel (431), the lower transmission wheel (431) is located in the lower cover body (41), the lower transmission wheel (431) is annular with a notch, the lower transmission wheel (431) is coaxially arranged with the vertical center line of the slip elevator body (1), the lower transmission wheel (431) is rotatably connected to the lower cover body (41), and lower meshing teeth (432) are arranged under the outer peripheral wall of the lower transmission wheel (431). A lower motor (433) is fixedly arranged under the lower guide plate (42); a lower gear (434) is installed at the output end of the lower motor (433); the lower gear (434) meshes with the lower meshing gear (432); a plurality of lower worm gear teeth (435) are arranged on the top of the lower transmission wheel (431); the plurality of lower worm gear teeth (435) correspond one-to-one to the plurality of lower guide racks (44); and the lower guide racks (44) mesh with the lower worm gear teeth (435).
9. A power slip and elevator with a guiding and straightening mechanism according to claim 8, characterized in that: A lower guide groove (436) is provided at the bottom of the lower transmission wheel (431); the lower guide groove (436) is annular with a notch; the lower guide groove (436) is coaxially arranged with the vertical center line of the slip elevator body (1); a plurality of lower guide wheels (437) are provided in the lower guide groove (436); the plurality of lower guide wheels (437) are all mounted on the lower cover body (41); the lower guide wheels (437) are used to support and limit the lower transmission wheel (431) from rotating around the vertical center line of the slip elevator body (1).
10. The power slip and elevator with a guiding and straightening mechanism according to claim 1, characterized in that: A fork-shaped second opening is provided at one end of the lower guide rack (44), and the lower guide roller (45) is located in the second opening.