Adjusting device for pipe rod

Abstract

The invention relates to an adjusting device for a pipe rod, and belongs to the technical field of pipe rod adjustment. Comprising a supporting frame, a rotating device and at least two stretching devices, the rotating device is installed on the supporting frame and used for rotating a pipe rod in the axial direction so that the position to be adjusted on the pipe rod can be located in the vertical direction, and the at least two stretching devices are matched to achieve bending straightening or bending adjusting of the pipe rod. The stretching device comprises a height adjusting structure arranged on the supporting frame, and the top of the height adjusting structure is provided with a fastening structure used for fastening the pipe rod. According to the adjusting device for the pipe rod, the pipe rod is rotated through the rotating device, so that the to-be-adjusted position on the pipe rod is located in the vertical direction, and bending straightening or bending adjusting can be conveniently achieved on the to-be-adjusted position located in the vertical direction through the at least two stretching devices; at least two stretching devices are matched in the reverse direction or in the same direction to achieve bending straightening or bending adjustment of the pipe rod (bending change or bending of the straight pipe rod belongs to bending adjustment).

Description

Technical Field

[0001] This invention relates to an adjustment device for pipe rods, belonging to the field of pipe rod adjustment technology. Background Technology

[0002] Coiled tubing, also known as flexible tubing or coiled tubing, is used in oil and gas field operations. Depending on the well conditions, the bottom of the coiled tubing is usually connected to corresponding tools. When the tools are lowered into the well, the coiled tubing itself has a certain curvature, making it difficult to pass smoothly through the wellhead hanger or casing head. It tends to lean against one side of the casing head or hanger, forming a lateral jamming point. Repeated up and down movements cannot pass through (the bending stress inside the coiled tubing cannot be eliminated). This is especially problematic with flat-bottomed tools such as flat-bottomed grinding shoes, concave-bottomed grinding shoes, and tools without chamfered couplings. Blindly applying pressure will only worsen the bending of the coiled tubing. When not under pressure, the wellhead can be removed and the tubing can be straightened with a pry bar before lowering it into the well. When encountering this situation during under pressure operations, the tool must be removed and the tubing straightened to ensure that the tool is as centered as possible in order to pass through the jamming point more smoothly and be lowered into the well.

[0003] There are four existing methods for straightening continuous tubing. Method one is a mechanical pressure clamp straightening platform, where the tubing is fixed and the bent portion is squeezed by rotating the pressure clamp. This method is inefficient, labor-intensive, and carries significant potential safety risks and hazards, making it an outdated and high-risk method facing elimination. Method two is a pneumatic-hydraulic tubing straightening machine. This process requires heavy equipment for large production workshops, and its design flaws limit its miniaturization; it is too bulky and unsuitable for on-site use. Method three involves using crane outriggers to press down on the tubing. However, the tubing is prone to uneven stress and bounce under the hydraulic outrigger pads, posing a very high safety risk. Method four involves manual straightening, using the lever principle to move the fulcrum. However, this method is limited by the number of personnel in the work team, and even with full participation, it is difficult to achieve the desired results.

[0004] All four methods above are for straightening longitudinal bends, but it is difficult to correct transverse bends. Methods 1, 3, and 4 are too crude and outdated, which is not conducive to the transformation and development towards refinement. Method 2 cannot be applied to the work site.

[0005] Patent document CN211679404U discloses a hydraulic straightening device for pipe rods. This device includes a support base, a lifting arm, a hydraulic support frame, a clamp, a jack, and a clamp. The jack is slidably fixed on the support base, and the clamp is fixedly connected above the jack. Hydraulic support frames are arranged on both sides of the jack and are fixedly connected to the support base. A clamp is fixed above the hydraulic support frame, and the clamp is adjustable via bolts. This invention employs the lever principle and hydraulic straightening technology, and its straightening of pipe rods is primarily for longitudinal bending; however, lateral bending remains difficult to correct. Summary of the Invention

[0006] The object of the present invention is to provide an adjusting device for a pipe rod to solve the problem of difficult lateral bending correction of the pipe rod.

[0007] To achieve the above object, the solution of the present invention includes:

[0008] An adjusting device for a pipe rod of the present invention includes a support frame and a rotating device and at least two stretching devices installed on the support frame for rotating the pipe rod along the axial direction to make the position to be adjusted on the pipe rod in the vertical direction. The cooperation of at least two stretching devices is used to straighten or bend the pipe rod. The stretching device includes a height adjusting structure arranged on the support frame, and a fastening structure for fastening the pipe rod is arranged at the top of the height adjusting structure.

[0009] The adjusting device for the pipe rod of the present invention rotates the pipe rod through the rotating device so that the position to be adjusted on the pipe rod is in the vertical direction, which is convenient for at least two stretching devices to straighten or bend the position to be adjusted that is already in the vertical direction; through the reverse cooperation (the stretching directions of the two stretching devices are opposite, and the stretching speeds are the same or different) or the same-direction cooperation (the stretching directions of the two stretching devices are the same, and the stretching speeds are the same or different) of at least two stretching devices, the bending straightening of the pipe rod or the bending adjustment of the pipe rod (the change of bending or the bending of a straight pipe rod both belong to bending adjustment) is realized. After at least two fastening structures of the present invention fasten the pipe rod, the position where the fastening structure is located on the pipe rod is the stress point, and at least one height adjusting structure matching the fastening structure adjusts the height of the position where the fastening structure fastens the pipe rod to straighten or bend the pipe rod.

[0010] Further, the height adjusting structure includes a first hydraulic cylinder. The fixed end of the first hydraulic cylinder is fixedly installed on the support frame, and the movable end of the first hydraulic cylinder is connected to the fastening structure for fastening the pipe rod.

[0011] The height adjusting structure of the present invention adopts a hydraulic cylinder to drive the fastening structure in a hydraulic transmission manner, and then realizes the fastening structure to drive the pipe rod.

[0012] Further, the fastening structure includes an upper pressing cover and a lower pressing cover. One end of the upper pressing cover is hinged to one end of the lower pressing cover, and the other end of the upper pressing cover is detachably connected to the other end of the lower pressing cover. The connection of the other end of the upper pressing cover and the other end of the lower pressing cover makes the upper pressing cover and the lower pressing cover clasp and hold the pipe rod tightly after being buckled.

[0013] The fastening structure of the present invention is hinged at one end of the upper pressing cover and one end of the lower pressing cover, and the other end of the upper pressing cover is detachably connected to the other end of the lower pressing cover. The connection of the other end of the upper pressing cover and the other end of the lower pressing cover makes the upper pressing cover and the lower pressing cover clasp and hold the pipe rod tightly after being buckled. The non-connection of the other end of the upper pressing cover and the other end of the lower pressing cover makes the other end of the upper pressing cover and the other end of the lower pressing cover move away to take out the pipe rod.

[0014] Furthermore, one end of the upper cover and one end of the lower cover are hinged by a pin structure, and the other end of the upper cover and the other end of the lower cover are detachably connected by a screw and nut.

[0015] Furthermore, both the upper and lower pressure caps have slots on their other ends. When the upper and lower pressure caps are fastened together, the two slots are aligned to hold the screw. A nut is installed at one end of the screw, and a rotatable nut is installed at the other end. The nut is a strip-shaped nut, the width of which is smaller than the width of the slot where the screw is placed, and the length of which is greater than the width of the slot where the screw is placed. A guide groove is provided on the lower pressure cap, which is connected to the slot. After the two slots are aligned, the screw is placed in the slot, and the nut is located at one end of the slot where the screw is placed and at the guide groove. The horizontal plane of the guide groove has protrusions on both sides of the slot opening, which are higher in the middle and lower on both sides, so that the bottom of the strip-shaped nut can move from the lower sides to the higher middle position by rotation. At this time, the upper and lower pressure caps are fastened together and hold the pipe rod tightly.

[0016] The other end of both the upper and lower pressure covers of this invention are provided with slots. When the upper and lower pressure covers are fastened together, the two slots are aligned (fully or partially aligned) to accommodate a screw. One end of the screw is screwed with a nut, and the other end is fitted with a rotating strip-shaped nut. The width of the nut is smaller than the width of the slot for accommodating the screw, and the length of the nut is greater than the width of the slot for accommodating the screw. The lower pressure cover is provided with a guide groove that communicates with the slots. After the two slots are aligned, the screw is placed in the slot, and the nut is positioned within the slot for accommodating the screw. One end is located at the guide groove, and the horizontal surface of the guide groove is relatively smooth. On both sides of the slot opening, there are protrusions that are high in the middle and low on both sides. When the strip nut rotates around the screw, the bottom of one end of the strip nut moves from either side of the low side to the high middle position on that side during the rotation. At the same time, the bottom of the other end moves from the opposite side of the remaining low side to the high middle position on that side during the rotation. At this time, the upper and lower pressure caps fasten and hold the tube rod tightly to prevent the tube rod from moving inside the upper and lower pressure caps.

[0017] Furthermore, the screw connection at one end of the nut and screw is detachable.

[0018] The screw connection at one end of the nut and screw of the present invention is detachable, which facilitates the replacement of the corresponding parts.

[0019] Furthermore, the inner wall of the upper and / or lower pressure cap is provided with a first slip for gripping the tube rod.

[0020] The inner wall of the upper and / or lower pressure caps of the present invention is provided with a first clamp for holding the tube rod, the first clamp being used to ensure that the tube rod does not roll during the adjustment process.

[0021] Furthermore, the rotating device includes a rotating frame mounted on a support frame and a forward / reverse control knob. The forward / reverse control knob is mounted on the rotating frame to adjust the rotation direction of the rotating frame. The rotating frame is also equipped with a hydraulic oil pump for driving the rotating part of the rotating frame. The rotating part of the rotating frame is equipped with a second clamp for gripping the pipe rod.

[0022] The rotating device of the present invention provides a second clamp on the rotating part of the rotating frame, which clamps the tube rod to ensure that the tube rod does not roll during the adjustment process; the present invention drives the rotating part to rotate on the fixed part of the rotating frame by a hydraulic oil pump, and the forward and reverse knobs are used to change the rotation direction of the rotating part.

[0023] Furthermore, the support frame includes a mounting frame, and the bottom of the mounting frame is provided with at least two opposing support legs. Each support leg includes a main support rod and two auxiliary supports connected to the main support rod, forming an inverted "Y" shape. The auxiliary supports are all second hydraulic cylinders.

[0024] This invention uses a second hydraulic cylinder to adjust the tilt of the mounting bracket at the location (direction) of the secondary support, enabling the quick installation and fixing of bent or unbalanced pipe rods, and making adjustment more labor-saving.

[0025] Furthermore, the grounding part of the second hydraulic cylinder is also connected to a movable wheel.

[0026] The present invention uses a movable wheel installed on the ground part of the second hydraulic cylinder to move the entire adjustment device, making it convenient and quick to move when used at the work site. Attached Figure Description

[0027] Figure 1 This is a front view of the adjusting device for a tube rod according to the present invention;

[0028] Figure 2 This is a left view of the adjusting device for the tube rod according to the present invention;

[0029] Figure 3 This is a schematic diagram of the rotating device of the present invention;

[0030] Figure 4 This is a schematic diagram of the fastening device of the present invention;

[0031] Figure 5 This is a schematic diagram of the lower pressure cap of the present invention;

[0032] Figure 6 This is a schematic diagram of the nut structure of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 0. Pipe rod; 1. Support frame; 10. Mounting frame; 11. Support leg; 110. Main support rod; 111. Sub-support; 112. Movable wheel; 2. Rotating device; 20. Rotating frame; 200. Base; 201. Fixing piece; 202. Rotating part; 21. Second slip; 22. Hydraulic oil pump; 23. Forward and reverse steering button; 30. Control handle; 31. First hydraulic cylinder; 310. Scale; 32. Upper gland; 320. Pin shaft; 321. Pin; 33. Lower gland; 330. Guide groove; 3300. Lower on both sides; 3301. Higher in the middle; 331. First slip; 332. Card slot; 34. Screw rod; 340. Nut; 341. Nut. Detailed implementation mode

[0035] To make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] An embodiment of an adjustment device for a pipe rod:

[0037] An adjustment device for a pipe rod includes at least two stretching devices. The stretching device includes a height adjustment structure and a fastening structure for fastening the pipe rod arranged at the top of the height adjustment structure. The fastening structures of the two stretching devices fasten (fix) the pipe rod, and the pipe rod is moved by the relative reverse movement of the two height adjustment structures to realize the adjustment of the pipe rod, that is, the bending straightening of the pipe rod or the bending adjustment of the pipe rod (both the change of bending or the bending of a straight pipe rod belong to bending adjustment).

[0038] The present invention realizes the bending straightening of the pipe rod or the bending adjustment of the pipe rod (both the change of bending or the bending of a straight pipe rod belong to bending adjustment) through the reverse cooperation (the stretching directions of the two stretching devices are opposite, and the stretching speeds are the same or different) or the same-direction cooperation (the stretching directions of the two stretching devices are the same, and the stretching speeds are the same or different) of at least two stretching devices. Among them, after at least two fastening structures fasten the pipe rod, the positions of the fastening structures on the pipe rod are the stress points, and at least one height adjustment structure配套 with the fastening structure adjusts the height of the position where the fastening structure fastens the pipe rod to realize the bending straightening of the pipe rod or the bending adjustment of the pipe rod.

[0039] The adjustment device may also include at least two tensioning devices and a rotating device. The tensioning device includes a height adjustment structure and a fastening structure set on top of the height adjustment structure for fastening the pipe rod. The fastening structures of the two tensioning devices fasten the bent or to-bend pipe rod. The rotating device rotates the pipe rod so that the position to be adjusted on the pipe rod is in the vertical direction, which facilitates the at least two tensioning devices to straighten or adjust the pipe rod at the position to be adjusted that is already in the vertical direction. The pipe rod can be straightened or adjusted by the at least two tensioning devices working in opposite directions (the two tensioning devices have opposite tensioning directions and the same or different tensioning speeds) or working in the same direction (the two tensioning devices have the same tensioning direction and the same or different tensioning speeds). (Changing the bending or bending of a straight pipe rod both belong to adjustment.)

[0040] The adjustment device can also be like Figures 1 to 6 As shown, it includes a support frame 1, a rotating device 2 mounted on the support frame 1 for rotating the tube rod 0 axially so that the position to be adjusted on the tube rod 0 is in the vertical direction, and three tensioning devices. The middle tensioning device is the main tensioning device, and the two side tensioning devices are auxiliary tensioning devices.

[0041] The tensioning device includes a height adjustment structure mounted on the support frame 1. The height adjustment structure includes a first hydraulic cylinder 31, with its fixed end fixedly mounted on the support frame 1. The movable end of the first hydraulic cylinder 31 (i.e., the top of the height adjustment structure) is connected to a fastening structure for securing the tube rod 0. The first hydraulic cylinder 31 of the main tensioning device is also equipped with a scale 310, allowing the operator to adjust the movement distance of the movable end of the first hydraulic cylinder 31 according to the scale lines. The first hydraulic cylinder 31 of the auxiliary tensioning device may also be equipped with a scale 310.

[0042] The fastening structure includes an upper pressure cover 32 and a lower pressure cover 33. One end of the upper pressure cover and one end of the lower pressure cover are hinged by a pin structure. Specifically, the pin 320 passes through one end of the lower pressure cover and one end of the upper pressure cover. The pin cap of the pin is located on one side of one end of the lower pressure cover, and the pin rod of the pin passes through one end of the lower pressure cover and one end of the upper pressure cover and is then secured by a pin 321 to achieve the hinge connection between the two ends. Alternatively, the pin 320 can also pass through one end of the upper pressure cover and one end of the lower pressure cover, with the pin cap located on one side of one end of the upper pressure cover. The pin rod of the pin passes through one end of the upper pressure cover and one end of the lower pressure cover and is then secured by a pin 321 to achieve the hinge connection between the two ends. The other end of the upper pressure cover... The other end of the upper and lower pressure caps are detachably connected by a screw and nut. Specifically, the screw 34 passes through both ends of the upper and lower pressure caps, with a nut 340 on one side of the other end of the upper pressure cap. After the screw shank passes through both ends, a nut 341 is tightened onto the threaded section of the screw, achieving a detachable connection between the other ends of the upper and lower pressure caps. Alternatively, the screw passes through both ends of the lower and upper pressure caps, with a nut on one side of the other end of the lower pressure cap. The screw shank passes through both ends of the lower and upper pressure caps, with a nut tightened onto the threaded section of the screw, achieving a detachable connection between the other ends of the upper and lower pressure caps. The connection between the other ends of the upper and lower pressure caps allows them to engage and hold the tube rod securely. The disconnection of the other ends of the upper and lower pressure caps keeps them away from the tube rod.

[0043] In another embodiment, both the upper and lower pressure covers have slots 332 at their other ends. When the upper and lower pressure covers 32 and 33 are fastened together, the two slots 332 are aligned to accommodate the screw 34. One end of the screw 34 is fitted with a nut 341, and the other end is fitted with a rotatable nut 340. The nut 340 is a strip-shaped nut, the width of which is smaller than the width of the slot 332 for accommodating the screw 34, and the length of which is greater than the width of the slot 332 for accommodating the screw 34. The lower pressure cover 33 has... The guide groove 330 and the slot 332 are connected. After the two slots 332 are aligned, the screw 34 is placed in the slot 332. The nut 340 is located at one end of the slot 332 where the screw 34 is placed and at the guide groove 330. The horizontal plane where the guide groove 330 is located has protrusions on both sides of the slot opening, with a middle high 3301 and two sides low 3300, so that the bottom of the strip nut can be moved from the two sides low 3300 to the middle high 3301 position by rotation. At this time, the upper pressure cap 32 and the lower pressure cap 33 fasten and hold the tube rod 0.

[0044] The height adjustment structure of this invention uses a hydraulic cylinder to drive the fastening structure via hydraulic transmission, thereby enabling the fastening structure to drive the tube rod. Both the upper and lower pressure covers have slots on their other ends. When the upper and lower pressure covers are engaged, the two slots align (fully or partially) to accommodate the screw rod. One end of the screw rod is screwed with a nut, and the other end is fitted with a rotating strip-shaped nut. The width of the nut is smaller than the width of the slot for the screw rod, and the length of the nut is greater than the width of the slot. The lower pressure cover has a guide groove that communicates with the slots. After the two slots are aligned... The screw is placed in the slot, and the nut is located at one end of the slot where the screw is placed and at the guide groove. The horizontal surface of the guide groove is relatively smooth, and it has protrusions on both sides of the slot opening, one higher in the middle and one lower on both sides. When the strip-shaped nut rotates around the screw, the bottom of one end of the strip-shaped nut moves from either of the two lower sides to the higher middle position on that side during rotation. At the same time, the bottom of the other end moves from the opposite side of the remaining two lower sides to the higher middle position on that side during rotation. At this time, the upper and lower pressure caps fasten and hold the tube rod tightly to prevent the tube rod from moving within the upper and lower pressure caps. The screw connection between the nut and one end of the screw is detachable, which facilitates the replacement of the corresponding parts. The inner wall of the upper pressure cap 32 and / or the lower pressure cap 33 is provided with a first clamp 331 for holding the tube rod 0. The first clamp 331 is used to ensure that the tube rod 0 does not roll during adjustment.

[0045] The rotating device 2 includes a rotating frame 20 and a clockwise / counterclockwise rotation knob 23 mounted on the support frame 1. The clockwise / counterclockwise rotation knob 23 is mounted on the rotating frame 20 to adjust the rotation direction of the rotating frame 20 (clockwise or counterclockwise rotation). The rotating frame 20 is also equipped with a hydraulic oil pump 22 for driving the rotating part 202 of the rotating frame. The rotating part 202 of the rotating frame 20 is equipped with a second clamp 21 for gripping the pipe rod 0.

[0046] The rotating device 2 uses a second clamp 21 on the rotating part 202 of the rotating frame 20 to grip the tube rod 0, ensuring that the tube rod 0 does not roll during adjustment. The rotating part 202 is driven to rotate on the fixed part of the rotating frame 20 by a hydraulic pump 22, and a forward / reverse knob 23 is used to change the rotation direction of the rotating part 202. The fixed part of the rotating frame 20 includes a fixing member 201 and a base 200. The base 200 of the rotating device 2 is mounted on the support frame 1, and the rotating part 202 is mounted on the fixing member 201 on the base 200. The hydraulic pump 22 drives the rotating part 202 to rotate on the fixing member 201, and the forward / reverse knob 23 is located on the rotating part 202.

[0047] The support frame 1 includes a mounting frame 10. At least two opposing support legs 11 are provided at the bottom of the mounting frame 10. Each support leg 11 includes a main support rod 110 and two auxiliary supports 111 connected to the main support rod 110, forming an inverted "Y" shape (triangular design with diagonal bracing). This enhances the stability and strength of the main body, facilitating miniaturization and weight reduction for convenient transportation or relocation. The auxiliary supports 111 are all second hydraulic cylinders, with casters 112 positioned at the grounding point of each cylinder. The first hydraulic cylinder 31, the auxiliary supports 111 (second hydraulic cylinders), and the hydraulic pump 22 are each controlled by their corresponding control handles 30. These control handles 30 are concentrated in a safe and easily operable position, allowing one person to independently complete pipe alignment operations, saving significant manpower and facilitating future automation and intelligent upgrades. Figure 2 As shown, the control handle 30 is mounted on the mounting bracket 10. This invention uses hydraulic transmission as its power source, and can be implemented by work machines, cranes, etc., through conversion joints, ensuring sufficient power at oil and gas field construction sites. Advantages: It can achieve a wide range of stepless speed regulation, shock absorption, and facilitates overload protection and automation. The rotating device has ample torque to meet the torque requirements during pipe calibration; the tensioning device can obtain greater force for the calibration of conventional pipe rods; the height adjustment device facilitates efficient installation of the clips. The telescopic scale design of the main hydraulic cylinder (first hydraulic cylinder 31) allows for precise adjustment according to the material, strength, stress, and other parameters and requirements of the pipe rod components, ensuring safe, reliable, and efficient adjustment. This promotes the industry's transformation towards refinement and enhances the high-quality development and standardization of oil and gas fields.

[0048] This invention uses a second hydraulic cylinder to adjust the tilt of the mounting bracket at the location (direction) of the secondary support, enabling the quick installation and fixing of bent or unbalanced pipe rods, and reducing effort during adjustment. By incorporating casters on the grounded portion of the second hydraulic cylinder, the entire adjustment device can be moved easily and quickly during on-site use.

Claims

1. An adjusting device for a tube rod, characterized in that, The device includes a support frame and a rotating device mounted on the support frame for axially rotating a pipe rod to bring the position to be adjusted on the pipe rod to a vertical position, and at least two tensioning devices. The cooperation of the at least two tensioning devices is used to straighten or adjust the bending of the pipe rod. The tensioning device includes a height adjustment structure disposed on the support frame, and a fastening structure for securing the pipe rod is disposed at the top of the height adjustment structure.

2. The adjusting device for a tube rod according to claim 1, characterized in that, The height adjustment structure includes a first hydraulic cylinder, the fixed end of which is fixedly mounted on a support frame, and the movable end of which is connected to a fastening structure for fastening the pipe rod.

3. The adjusting device for a tube rod according to claim 1 or 2, characterized in that, The fastening structure includes an upper pressure cover and a lower pressure cover. One end of the upper pressure cover and one end of the lower pressure cover are hinged together, and the other end of the upper pressure cover and the other end of the lower pressure cover are detachably connected. The other end of the upper pressure cover and the other end of the lower pressure cover are connected so that the upper pressure cover and the lower pressure cover can be fastened together to hold the tube rod tightly.

4. The adjusting device for a tube rod according to claim 3, characterized in that, One end of the upper pressure cover and one end of the lower pressure cover are hinged by a pin structure, and the other end of the upper pressure cover and the other end of the lower pressure cover are detachably connected by a screw and nut.

5. The adjusting device for a tube rod according to claim 4, characterized in that, Both the upper and lower pressure caps have slots at their other ends. When the upper and lower pressure caps are engaged, the two slots align to accommodate the screw. A nut is installed at one end of the screw, and a rotatable nut is installed at the other end. The nut is a strip-shaped nut, with a width smaller than the width of the slot for the screw and a length greater than the width of the slot. A guide groove is provided on the lower pressure cap, which communicates with the slot. After the two slots are aligned, the screw is placed in the slot, with the nut located at one end of the slot and at the guide groove. The horizontal plane of the guide groove has protrusions on both sides of the slot opening, one higher in the middle and one lower on the sides, so that the bottom of the strip-shaped nut can be moved from either of the lower sides to the higher middle position by rotation. At this time, the upper and lower pressure caps engage and hold the pipe tightly.

6. The adjusting device for a tube rod according to claim 5, characterized in that, The screw connection between the nut and one end of the screw is detachable.

7. The adjusting device for a tube rod according to any one of claims 4 to 6, characterized in that, The inner wall of the upper and / or lower pressure cap is provided with a first clamp for gripping the tube rod.

8. The adjusting device for a tube rod according to claim 1, characterized in that, The rotating device includes a rotating frame and a forward / reverse control knob mounted on a support frame. The forward / reverse control knob is mounted on the rotating frame to adjust the rotation direction of the rotating frame. The rotating frame is also equipped with a hydraulic oil pump for driving the rotating part of the rotating frame. The rotating part of the rotating frame is equipped with a second clamp for gripping the pipe rod.

9. The adjusting device for a tube rod according to claim 1, characterized in that, The support frame includes a mounting frame, and the bottom of the mounting frame is provided with at least two opposing support legs. Each support leg includes a main support rod and two auxiliary supports connected to the main support rod, forming an inverted "Y" shape. Each auxiliary support is a second hydraulic cylinder.

10. The adjusting device for a tube rod according to claim 9, characterized in that, The grounding part of the second hydraulic cylinder is also connected to a moving wheel.

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