Lifting nipple screwing-on device for coupling-free casing pipe

Abstract

The utility model relates to the technical field of petroleum drilling underground casing pipes, and discloses a lifting nipple screwing-on device for a coupling-free casing pipe, which comprises a pipe frame for placing and supporting the coupling-free casing pipe and a tray assembly for placing and supporting a lifting nipple, and the axis of the pipe frame is collinear with the axis of the tray assembly. The tray assembly is connected with the supporting frame assembly through the lifting assembly. The lifting assembly is used for driving the tray assembly to ascend and descend relative to the supporting frame assembly. The pipe frame and the tray assembly are used for supporting the coupling-free casing pipe and the lifting short section correspondingly, the lifting short section is driven by the lifting assembly to ascend and descend, alignment of the lifting short section and the coupling-free casing pipe is achieved, compared with manual lifting of the coupling-free casing pipe and the lifting short section for alignment, the stability and coaxiality of the coupling-free casing pipe and the lifting short section are improved, the wrong buckling risk is reduced, and the production efficiency is improved. The action efficiency is improved, and the labor intensity is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole casing for oil drilling, and more particularly to a lifting nipple make-up device for a couplingless casing. Background Art

[0002] Couplingless casing facilitates casing running and improves cement sealing quality, so it is widely used in sidetracking well construction. However, since the box end of the couplingless casing does not have a coupling, it cannot be directly lifted to the drill floor. A lifting nipple must be connected to the box end before it can be lifted to the drill floor using a casing elevator.

[0003] Currently, there's no dedicated make-up device for connecting the lifting nipple to uncoupled casing. This requires two people to raise the uncoupled casing and lifting nipple by 800-1000mm, respectively, while one person rotates the lifting nipple to connect it to the uncoupled casing. This manual lifting and manual rotational make-up process results in poor stability and coaxiality between the uncoupled casing and the lifting nipple, making it easy to make incorrect connections. This leads to repeated disassembly and disassembly, reducing efficiency and increasing labor intensity. It also significantly impacts casing running speed, potentially leading to stuck casing.

[0004] In summary, how to achieve the rapid connection between the couplingless casing and the lifting nipple is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a lifting pup joint fastening device for couplingless casing, which uses a pipe rack and a tray assembly to support the couplingless casing and the lifting pup joint, and uses a lifting assembly to drive the lifting pup joint to rise and fall, thereby improving the stability and coaxiality of the lifting pup joint and the couplingless casing, reducing the risk of wrong fastening, improving the working efficiency, and reducing labor intensity.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A lifting pup joint make-up device for uncoupled casing comprises a pipe rack for placing and supporting the uncoupled casing and a tray assembly for placing and supporting the lifting pup joint, wherein the axis of the pipe rack is collinear with the axis of the tray assembly, and the tray assembly is connected to the support frame assembly via a lifting assembly, and the lifting assembly is used to drive the tray assembly to rise and fall relative to the support frame assembly.

[0008] Preferably, the tray assembly includes a tray and two buckled bearings, the buckled bearings are rotatably sleeved outside the rotating shaft, the axis of the rotating shaft is parallel to the axis of the tray assembly, and the rotating shaft is installed in the mounting hole on the side of the tray.

[0009] Preferably, at least one of the mounting holes is a slide groove arranged along the length direction of the tray, the rotating shaft is slidably installed in the slide groove, and a locking member is provided between the upper bearing and the tray, and the locking member is used to fix the position of the upper bearing relative to the tray.

[0010] Preferably, the lifting assembly includes a lifting screw and a lifting nut, the top end of the lifting screw is connected to the bottom of the pallet, the support frame of the support frame assembly is provided with the lifting nut, and the lifting screw is sleeved in the lifting nut. When the lifting screw rotates, the lifting screw can drive the pallet to rise and fall in the height direction.

[0011] Preferably, a screwing portion is provided at the bottom end of the lifting screw, a through handle is provided in the screwing portion, and the axis of the handle is arranged perpendicular to the axis of the lifting screw.

[0012] Preferably, a guide assembly is provided between the tray assembly and the support frame assembly, and the guide assembly includes a guide cylinder and a guide rod, and the guide rod is slidably sleeved in the guide cylinder, one of the guide cylinder and the guide rod is connected to the support frame of the support frame assembly, and the other is connected to the tray assembly.

[0013] Preferably, the guide cylinder is provided with a locking rod, which is sleeved in a locking nut or a threaded hole of the guide cylinder, and is used to press the guide rod against the inner circumference of the guide cylinder.

[0014] Preferably, it also includes a bend wrench for rotating the lifting short section, the bend wrench includes a bend handle, an upper bend ring and a fixing pin for cooperating with the pin hole of the lifting short section, the upper bend ring is arranged at one end of the bend handle, and the fixing pin is arranged on the inner surface of the upper bend ring.

[0015] Preferably, a fixing pin hole is provided at one end of the upper buckle ring relatively close to the upper buckle handle, and the fixing pin is bolted to the fixing pin hole.

[0016] Preferably, the fixing pin relatively close to the upper buckle handle is connected to the upper buckle ring through a spring, and the spring is arranged perpendicular to the inner surface of the upper buckle ring.

[0017] When in use, the uncoupled casing to be hoisted is placed on the pipe rack, and the lifting short section is placed on the pallet assembly. The lifting assembly is controlled to make the pallet assembly and the lifting short section rise and fall in the height direction, so that the axis of the lifting short section is collinear with the axis of the uncoupled casing. Then the lifting short section is rotated to complete the buckled connection with the uncoupled casing, thereby realizing the buckling of the lifting short section of the uncoupled casing.

[0018] The utility model provides a lifting pup joint fastening device for couplingless casing, which utilizes a pipe rack and a tray assembly to respectively support the couplingless casing and the lifting pup joint, and utilizes a lifting assembly to drive the lifting pup joint to rise and fall, thereby realizing the alignment of the lifting pup joint and the couplingless casing. Compared with manually lifting the couplingless casing and the lifting pup joint for alignment, the utility model improves the stability and coaxiality of the two, reduces the risk of wrong fastening, improves the working efficiency, and significantly reduces the labor intensity.

[0019] In addition, the above-mentioned lifting short joint make-up device for the couplingless casing has a simple structure, low cost, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the principle of the lifting nipple make-up device for the non-coupling casing provided by the utility model;

[0022] Figure 2 Schematic diagram of the structure of the short section bracket;

[0023] Figure 3 Schematic diagram of the structure of the make-up wrench.

[0024] Figure 1-Figure 3 middle:

[0025] 01-uncoupled casing; 02-lifting pup joint; 10-pipe rack; 20-pup joint bracket; 201-tray assembly; 2011-tray; 2012-upper bearing; 2013-rotating shaft; 2014-connecting ear plate; 202-lifting assembly; 2021-lifting screw; 2022-lifting nut; 2023-handle; 203-support frame assembly; 2031-support frame; 2032-base; 204-guide assembly; 2041-guide rod; 2042-guide cylinder; 2043-locking rod; 2044-locking nut; 30-upper wrench; 301-upper handle; 302-upper retaining ring; 303-fixing pin. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The core of the utility model is to provide a lifting nipple fastening device for couplingless casing, which uses a pipe rack and a tray assembly to support the couplingless casing and the lifting nipple, and uses a lifting assembly to drive the lifting nipple to rise and fall, thereby improving the stability and coaxiality of the lifting nipple and the couplingless casing, reducing the risk of wrong fastening, improving the working efficiency, and reducing labor intensity.

[0028] The utility model provides a lifting short section beading device for uncoupled casing, comprising a pipe rack 10 for placing and supporting the uncoupled casing 01 and a tray assembly 201 for placing and supporting the lifting short section 02. The axis of the pipe rack 10 is collinear with the axis of the tray assembly 201. The tray assembly 201 is connected to the support frame assembly 203 via a lifting assembly 202. The lifting assembly 202 is used to drive the tray assembly 201 to rise and fall relative to the support frame assembly 203.

[0029] The pipe rack 10 is used to place and support the uncoupled casing 01. The pipe rack 10 is usually a frame structure and can be formed by welding steel pipes, channel steels, steel plates, etc. It has a simple structure and is easy to obtain materials.

[0030] Considering that the mass of the uncoupled casing 01 is usually greater than the mass of the lifting pup joint 02, alignment is usually achieved by adjusting the position of the lifting pup joint 02. The pup joint bracket 20 is used to place and adjust the position of the lifting pup joint 02, and mainly includes a tray assembly 201, a lifting assembly 202 and a support frame assembly 203.

[0031] The tray assembly 201 is used to place and support the lifting short section 02. In order to enhance the installation stability and reliability of the lifting short section 02, the contact surface between the tray assembly 201 and the lifting short section 02 can be set as an arc surface, or a buckle bearing 2012 can be provided on the top of the tray assembly 201, and the lifting short section 02 can be set between the buckle bearings 2012 on both sides.

[0032] The lifting assembly 202 is used to drive the tray assembly 201 to rise and fall relative to the support frame assembly 203 in the height direction, thereby adjusting the height of the lifting short section 02 and realizing the height alignment of the lifting short section 02 and the uncoupled casing 01; the lifting assembly 202 can be set as a screw-nut mechanism, or it can be set as a linear power mechanism such as an electric push rod, a linear motor, and a lifting cylinder.

[0033] The support frame assembly 203 is the main load-bearing structure of the short-section bracket 20. In order to increase the contact area between the support frame assembly 203 and the ground and improve the stability of the short-section bracket 20, a base 2032 is provided at the bottom of the support frame 2031. The base 2032 can be set as a rectangular frame or a rectangular plate.

[0034] In order to achieve the alignment of the lifting nipple 02 and the uncoupled casing 01, it is necessary to adjust the height and horizontal position of the axes of the two. In order to improve the alignment efficiency, the axis of the tray assembly 201 is set to be collinear with the axis of the pipe rack 10, so as to omit the horizontal alignment process of the lifting nipple 02 and the uncoupled casing 01. Therefore, it is only necessary to adjust the height of the lifting nipple 02 and perform height alignment.

[0035] When in use, the uncoupled casing 01 to be hoisted is placed on the pipe rack 10, and the lifting short section 02 is placed on the tray assembly 201. The lifting assembly 202 is controlled to make the tray assembly 201 and the lifting short section 02 rise and fall in the height direction, so that the axis of the lifting short section 02 is collinear with the axis of the uncoupled casing 01, and then the lifting short section 02 is rotated to complete the buckled connection with the uncoupled casing 01, thereby realizing the buckling of the lifting short section 02 of the uncoupled casing 01.

[0036] In this embodiment, the pipe rack 10 and the tray assembly 201 are used to support the uncoupled casing 01 and the lifting pup joint 02 respectively, and the lifting assembly 202 is used to drive the lifting pup joint 02 to rise and fall, so as to realize the alignment of the lifting pup joint 02 and the uncoupled casing 01. Compared with manually lifting the uncoupled casing 01 and the lifting pup joint 02 for alignment, the stability and coaxiality of the two are improved, the risk of wrong threading is reduced, the working efficiency is improved, and the labor intensity is significantly reduced.

[0037] In addition, the above-mentioned lifting short joint make-up device for the couplingless casing has a simple structure, low cost, and is easy to promote.

[0038] Based on the above embodiment, the structure of the tray assembly 201 is defined. The tray assembly 201 includes a tray 2011 and two buckled bearings 2012. The buckled bearings 2012 are rotatably sleeved outside the rotating shaft 2013. The axis of the rotating shaft 2013 is parallel to the axis of the tray assembly 201. The rotating shaft 2013 is installed in the mounting hole on the side of the tray 2011.

[0039] Please refer to Figure 1 The two buckle bearings 2012 are respectively arranged at the lower left and lower right of the lifting short section 02, which can not only increase the contact area between the lifting short section 02 and the tray assembly 201 to improve the installation stability of the lifting short section 02, but also convert the friction between the lifting short section 02 and the tray assembly 201 into rolling friction, so as to rotate the lifting short section 02 for buckling.

[0040] The two buckled bearings 2012 are symmetrically distributed about the axis of the tray 2011. The size of the buckled bearings 2012 and the horizontal distance between the buckled bearings 2012 and the bearings of the tray 2011 are determined according to the size of the lifting short section 02 used in actual production, so as to avoid the lifting short section 02 being placed between the two buckled bearings 2012 and the angle between the center of the two buckled bearings 2012 and the line connecting the center of the lifting short section 02 being too small, thereby affecting the installation stability of the lifting short section 02.

[0041] The buckle bearing 2012 is mounted on the tray 2011 through the rotating shaft 2013. The mounting hole of the tray 2011 can be set as a round hole or as a Figure 2 The arc-shaped hole shown; the mounting hole is preferably set as an arc-shaped hole, so that the upper buckle bearing 2012 is loaded into the tray 2011 from top to bottom, which is convenient for installation, and can also reduce the height of the tray 2011 and reduce the weight of the tray assembly 201.

[0042] In this embodiment, two buckled bearings 2012 are used to support the lifting sub 02. When the lifting sub 02 is rotated, the rolling friction force of the buckled bearings 2012 on the lifting sub 02 is small, which facilitates the rotation of the lifting sub 02.

[0043] Of course, the buckle bearing 2012 may be replaced by a roller. The roller may be rotatably sleeved outside the rotating shaft 2013 or may be integrally provided with the rotating shaft 2013 .

[0044] Taking into account that different types of uncoupled casings 01 need to be connected with different types of lifting short sections 02, on the basis of the above embodiment, at least one mounting hole can be set as a slide groove arranged along the length direction of the tray 2011, and the rotating shaft 2013 is slidably installed in the slide groove, and a locking member is provided between the upper bearing 2012 and the tray 2011, and the locking member is used to fix the position of the upper bearing 2012 relative to the tray 2011.

[0045] It should be noted that if only one of the bend bearings 2012 is adjustable in position, it is necessary to adjust the position of the short-circuit bracket 20 or the pipe rack 10 after adjustment to ensure that the axis of the uncoupled casing 01 is located within the symmetry plane of the two bend bearings 2012, so that the axis of the lifting short section 02 is collinear with the axis of the uncoupled casing 01.

[0046] The slide groove can be set as a closed waist-shaped groove or an open structure, as long as the axis heights of the two upper buckle bearings 2012 are the same; the length of the slide groove is determined according to factors such as the diameter range of the lifting short section 02 and the diameter of the upper buckle bearing 2012 in actual production.

[0047] The locking member is used to fix the relative position of the upper bearing 2012 and the tray 2011. The locking member can be specifically set as a locking bolt, a locking pin, etc. The locking member passes through the connecting hole of the rotating shaft 2013 and the mounting hole or mounting groove of the locking plate on the side of the tray 2011 in sequence, thereby connecting and fixing the rotating shaft 2013 and the locking plate, and then fixing the position of the upper bearing 2012 relative to the tray 2011.

[0048] In this embodiment, at least one buckle bearing 2012 is slidably connected to the tray 2011, and the horizontal distance between the two buckle bearings 2012 is adjustable. On the premise of meeting the stability requirements of the lifting short section 02, it can meet the installation requirements of more models of lifting short sections 02.

[0049] Of course, multiple mounting holes can also be set on the side of the tray 2011, and the distance between the two buckle bearings 2012 can be adjusted by adjusting the mounting holes into which the buckle bearings 2012 are installed.

[0050] On the basis of the above embodiments, the structure of the lifting assembly 202 is defined. The lifting assembly 202 includes a lifting screw 2021 and a lifting nut 2022. The top of the lifting screw 2021 is connected to the bottom of the tray 2011. The support frame 2031 of the support frame assembly 203 is provided with a lifting nut 2022. The lifting screw 2021 is sleeved in the lifting nut 2022. When the lifting screw 2021 rotates, the lifting screw can drive the tray 2011 to rise and fall in the height direction.

[0051] Please refer to Figure 2 The top end of the lifting screw 2021 is connected to the connecting ear plate 2014 at the bottom of the tray 2011. When there is only one lifting screw 2021, it is preferred to set the axis of the lifting screw 2021 and the axis of the tray 2011 to be located in the same vertical plane so that the lifting screw 2021 can stably support the tray assembly 201.

[0052] The height of the lifting screw 2021 determines the stroke of the lifting screw 2021, which needs to be determined based on the height of the pipe rack 10, the height of the support frame assembly 203, the height of the tray assembly 201, and the radius difference range of the uncoupled casing 01 and the lifting short section 02 in actual production.

[0053] The lifting screw 2021 is threadedly sleeved in the lifting nut 2022. The lifting nut 2022 can be directly welded to the top surface and / or bottom surface of the support frame 2031, or it can be welded and sleeved in the screw hole of the support frame 2031. The lifting nut 2022 and the support frame 2031 can also be set as an integrated structure.

[0054] In this embodiment, a screw-nut mechanism is used to drive the tray assembly 201 to rise and fall relative to the support frame assembly 203. No power source is required, the structure is simple, and the lifting screw 2021 can be formed by threading round steel, which is easy to obtain and process and has low cost.

[0055] In order to facilitate the rotation of the lifting screw 2021, a screwing part may be provided at the bottom of the lifting screw 2021. The screwing part may be a cone with a diameter larger than the screw body, or may be a non-slip sleeve. It is preferred that a through handle 2023 is provided in the screwing part, and the axis of the handle 2023 is arranged perpendicular to the axis of the lifting screw 2021. The handle 2023 can reduce the force required to rotate the lifting screw 2021 through the principle of leverage.

[0056] On the basis of the above embodiment, a guide assembly 204 is provided between the tray assembly 201 and the support frame assembly 203. The guide assembly 204 includes a guide cylinder 2042 and a guide rod 2041. The guide rod 2041 is slidably sleeved in the guide cylinder 2042. One of the guide cylinder 2042 and the guide rod 2041 is connected to the support frame 2031 of the support frame assembly 203, and the other is connected to the tray assembly 201.

[0057] The number of guide cylinders 2042 can be set to one, two or more, preferably the number of guide cylinders 2042 is two, and the two guide cylinders 2042 are symmetrically distributed about the vertical plane where the axis of the tray assembly 201 is located, such as Figure 2 shown.

[0058] Preferably, the guide cylinder 2042 is provided with a locking rod 2043 , which is sleeved in a locking nut 2044 or a threaded hole of the guide cylinder 2042 . The locking rod 2043 is used to press the guide rod 2041 against the inner circumference of the guide cylinder 2042 .

[0059] When the locking rod 2043 is tightened, the locking rod 2043 abuts against the outer circumference of the guide rod 2041, pressing the guide rod 2041 against the inner circumference of the guide cylinder 2042, thereby limiting the upward and downward movement of the tray assembly 201 relative to the support frame assembly 203;

[0060] When the locking rod 2043 is released, the locking rod 2043 is separated from the outer peripheral surface of the guide rod 2041, and the guide rod 2041 can slide freely relative to the guide cylinder 2042. At this time, the rotating handle 2023 can drive the tray assembly 201 to rise and fall relative to the support frame assembly 203 in the height direction.

[0061] On the basis of the above embodiment, in order to facilitate the rotation of the lifting short section 02, the lifting short section buckling device can also include a buckling wrench 30 for rotating the lifting short section 02. The buckling wrench 30 includes a buckling handle 301, an upper buckling ring 302 and a fixing pin 303 for cooperating with the pin hole in the lifting short section 02. The upper buckling ring 302 is arranged at one end of the buckling handle 301, and the fixing pin 303 is arranged on the inner surface of the upper buckling ring 302.

[0062] The shape, size and distribution of the fixing pins 303 are determined according to the shape, size and distribution of the pin holes of the lifting sub 02 in actual production, and will not be described in detail here.

[0063] Before the lifting pup section 02 is placed on the tray assembly 201, or after the lifting pup section 02 and the uncoupled casing 01 are aligned, the bend wrench 30 is placed on the outside of the lifting pup section 02, so that the fixing pin 303 of the bend wrench 30 is inserted into the pin hole of the lifting pup section 02, and then the bend handle 301 is pressed to rotate the lifting pup section 02.

[0064] In this embodiment, the bend handle 301 of the bend wrench 30 can extend the force arm of the pressure, effectively reducing the pressure required to rotate the lifting short section 02, which is beneficial to reducing the working intensity.

[0065] In order to facilitate the insertion of the fixing pin 303 into the pin hole of the lifting sub 02, a fixing pin hole can be provided at one end of the upper buckle ring 302 relatively close to the buckle handle 301. The fixing pin 303 is threadedly connected to the fixing pin hole, so that by screwing the fixing pin 303, the length of the fixing pin 303 protruding from the upper buckle ring 302 is changed, thereby facilitating the insertion of the lifting sub 02 into the upper buckle ring 302.

[0066] A fixing pin 303 relatively close to the upper buckle handle 301 can also be provided to be connected to the upper buckle ring 302 through a spring. The spring is provided perpendicular to the inner surface of the upper buckle ring 302, and the short section 02 can be conveniently lifted and placed into the upper buckle ring 302 by squeezing the spring to shorten it.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above describes in detail the lifting nipple make-up device for uncoupled casing provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A lifting nipple make-up device for uncoupled casing, characterized in that: The invention comprises a pipe rack (10) for placing and supporting a non-coupling casing (01) and a tray assembly (201) for placing and supporting a lifting short section (02), wherein the axis of the pipe rack (10) is collinear with the axis of the tray assembly (201), the tray assembly (201) is connected to a support frame assembly (203) via a lifting assembly (202), and the lifting assembly (202) is used to drive the tray assembly (201) to rise and fall relative to the support frame assembly (203).

2. The lifting nipple make-up device for uncoupled casing according to claim 1, characterized in that: The tray assembly (201) comprises a tray (2011) and two buckled bearings (2012), wherein the buckled bearings (2012) are rotatably sleeved outside a rotating shaft (2013), the axis of the rotating shaft (2013) is parallel to the axis of the tray assembly (201), and the rotating shaft (2013) is installed in a mounting hole on the side of the tray (2011).

3. The lifting nipple make-up device for uncoupled casing according to claim 2, characterized in that: At least one of the mounting holes is a slide groove arranged along the length direction of the tray (2011), the rotating shaft (2013) is slidably installed in the slide groove, and a locking member is provided between the upper bearing (2012) and the tray (2011), and the locking member is used to fix the position of the upper bearing (2012) relative to the tray (2011).

4. The lifting nipple make-up device for uncoupled casing according to claim 2, characterized in that: The lifting assembly (202) comprises a lifting screw (2021) and a lifting nut (2022); the top end of the lifting screw (2021) is connected to the bottom of the tray (2011); the support frame (2031) of the support frame assembly (203) is provided with the lifting nut (2022); the lifting screw (2021) is sleeved in the lifting nut (2022); when the lifting screw (2021) rotates, the lifting screw (2021) can drive the tray (2011) to rise and fall in a height direction.

5. The lifting nipple make-up device for uncoupled casing according to claim 4, characterized in that: A screwing portion is provided at the bottom end of the lifting screw (2021), and a handle (2023) is provided through the screwing portion. The axis of the handle (2023) is arranged perpendicular to the axis of the lifting screw (2021).

6. The lifting nipple make-up device for uncoupled casing according to any one of claims 1 to 5, characterized in that: A guide assembly (204) is provided between the tray assembly (201) and the support frame assembly (203), the guide assembly (204) comprising a guide cylinder (2042) and a guide rod (2041), the guide rod (2041) being slidably sleeved in the guide cylinder (2042), one of the guide cylinder (2042) and the guide rod (2041) being connected to the support frame (2031) of the support frame assembly (203), and the other being connected to the tray assembly (201).

7. The lifting nipple make-up device for uncoupled casing according to claim 6, characterized in that: The guide cylinder (2042) is provided with a locking rod (2043), the locking rod (2043) being sleeved in a locking nut (2044) or a threaded hole of the guide cylinder (2042), and the locking rod (2043) being used to press the guide rod (2041) against the inner circumference of the guide cylinder (2042).

8. The lifting nipple make-up device for uncoupled casing according to any one of claims 1 to 5, characterized in that: It also includes a buckle wrench (30) for rotating the lifting short section (02), the buckle wrench (30) includes a buckle handle (301), an upper buckle ring (302) and a fixing pin (303) for cooperating with the pin hole of the lifting short section (02), the upper buckle ring (302) is provided at one end of the buckle handle (301), and the fixing pin (303) is provided on the inner surface of the upper buckle ring (302).

9. The lifting nipple make-up device for uncoupled casing according to claim 8, characterized in that: An end of the upper buckle ring (302) relatively close to the upper buckle handle (301) is provided with a fixing pin hole, and the fixing pin (303) is bolted to the fixing pin hole.

10. The lifting nipple make-up device for uncoupled casing according to claim 8, characterized in that: The fixing pin (303) relatively close to the upper buckle handle (301) is connected to the upper buckle ring (302) via a spring, and the spring is arranged perpendicular to the inner surface of the upper buckle ring (302).

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