CN216940379U - Pipeline butt joint alignment instrument - Google Patents

Abstract

The utility model provides a pipeline butt-joint straightening tool which comprises a horizontal rod with a certain length, a plurality of rings which are arranged at intervals along the axial direction of the horizontal rod and have the same direction, and supporting components for reinforcing, wherein the rings are vertically and fixedly connected with the rod body of the horizontal rod and have adjustable sizes, at least four rings are arranged, and the supporting components are arranged on one side of the rod body of the horizontal rod relative to the rings. The circle center connecting line of the circular rings is parallel to the horizontal rod, the two circular rings penetrate through and are fixed on the pipeline fixed in advance, the free pipeline to be connected penetrates through the residual circular rings, the size of each circular ring is adjusted to enable the circular rings to be in full contact with the outer wall of the free pipeline, and butt joint and straightening of the pipeline can be achieved. The pipeline butt straightening device is simple in structure, convenient to operate, stable, firm, convenient to store, capable of quickly achieving butt joint and straightening of pipelines, time-saving, labor-saving, suitable for pipelines with different diameters, economical and practical.

Description

Pipeline butt joint alignment instrument

Technical Field

The utility model belongs to the technical field of pipeline installation, and particularly relates to a pipeline butt joint straightening tool.

Background

In the construction of the building engineering, the electromechanical installation quality level directly influences the overall construction quality of the building engineering, as an important content of the building engineering, the electromechanical installation construction technology of the building is advanced to a certain extent in the large environment of the rapid development of the building engineering from the time the structure is completed to the time the engineering is run through, but under the existing conditions, the technology of electromechanical equipment installation lacks a unified evaluation mechanism, and part of people think that the technology accords with the standard and is orderly in arrangement, has simple and visual modeling, falls off and is elegant, the cost is economic and reasonable, and part think that the technology needs to be finely decorated and beautified at a certain cost. The technical personnel in the aspect of pipeline construction optimization are relatively few, and certain fault phenomenon exists.

Electromechanical installation is widely distributed in most projects, and a certain problem also exists in view of the current situation of electromechanical installation, the transverse and vertical installation becomes a basic requirement in pipeline installation, but when a large number of projects are subjected to construction operation on site, the problems of long consumed time and unsatisfactory butt joint effect easily occur in pipeline butt joint, and people are required to be specially dispatched to perform secondary straightening and correction in the later period, so that the cost is wasted, time and labor are wasted for construction workers, and the construction enthusiasm of the workers is easily influenced.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the pipeline butt-joint straightening tool which is simple in structure, convenient to operate, stable, firm, convenient to store, capable of quickly realizing butt-joint straightening of pipelines, time-saving, labor-saving, suitable for pipelines with different diameters, economical and practical.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a pipeline butt joint alignment instrument, is including the horizon bar that has certain length, still includes the ring that a plurality of directions unanimous that sets up along the horizon bar axial interval and be used for playing the supporting component of reinforcing action, the ring is with the perpendicular fixed connection of horizon bar body and its adjustable size, the ring includes four at least, the supporting component sets up in one side of horizon bar body for the ring.

Further, the circular ring comprises an outer ring and an inner ring which are connected in a nested manner, the outer ring is detachably connected with the inner ring, the top of the outer ring is fixedly connected with the horizontal rod body, and the size of the inner ring is adjustable. The outer loop and the inner ring are in detachable connection, when the inner ring is damaged, the inner ring can be detached and replaced independently, the whole device is not required to be replaced, the maintenance cost is low, and the device is economical and practical.

Further, the inner ring comprises an inner ring, an outer ring and a size adjusting assembly, the outer ring is rotatably sleeved on the outer peripheral surface of the inner ring, the size adjusting assembly comprises six clamping plates and six clamping rods, the clamping plates are regularly arranged on the inner peripheral surface of the inner ring along the circumferential direction, each clamping plate is in an obtuse triangle shape, the long edge of each clamping plate comprises a sliding rail, one end of each long edge is hinged to six equal points of the inner peripheral surface of the inner ring, the other end of each long edge is connected with the sliding rail of the previous clamping plate in a sliding mode, the six clamping plates are enclosed into a regular hexagon with adjustable size, one end of each clamping rod is hinged to the obtuse angle of each clamping plate, the other end of each clamping rod penetrates through the six equal points of the inner ring and the inner peripheral surface of the outer ring to be hinged, the inner ring comprises a through groove which is arranged along the circumferential direction and used for accommodating the clamping plates to pass through, and the outer ring is detachably connected with the outer ring. The obtuse angle department of every cardboard all is connected with a kelly, six cardboard and the six partition point department one-to-one of inner circle inner peripheral surface, the slide rail of the preceding cardboard of one end sliding connection on six kelly long limits, form regular hexagon, the other end and the six partition point department one-to-one of outer lane inner peripheral surface, it rotates to drive the kelly other end through rotating the outer lane, make its other end move to the direction that is close to or keeps away from the centre of a circle point thereupon, and then the other end that drives the cardboard long limit slides along the slide rail of preceding cardboard, with the size of adjustment regular hexagon, use with the pipeline that is applicable to different diameters, moreover, the steam generator is simple in structure, and convenient and flexible operation, and repeated use is realized, therefore, the clothes hanger is strong in practicability, and is economical and practical.

Further, the inner ring also comprises a locking assembly for fixing the relative positions of the inner ring and the outer ring. In order to prevent that relative slip from appearing at the in-process of pipeline butt joint alignment with the inner circle and making regular hexagon's size change, and then cause the influence to butt joint alignment effect, set up the locking subassembly in order to guarantee the result of use.

Furthermore, the locking assembly comprises a C-shaped buckle, the C-shaped buckle is sleeved in the inner ring from the inner ring, the opening end of the C-shaped buckle is welded on the surface of the outer ring, one side of the C-shaped buckle, which is tightly attached to the inner circumferential surface of the inner ring, is an openable hinged side, and the inner surface of the hinged side comprises a rubber layer. The inner ring is extruded by the hinged edge capable of being opened and closed, relative sliding between the inner ring and the outer ring is avoided by utilizing the friction force of the rubber layer, and the device is stable and firm when being subjected to butt joint and alignment of the pipeline, simple in structure, convenient, practical, time-saving and labor-saving.

Furthermore, the locking assembly comprises a C-shaped buckle, the C-shaped buckle is sleeved in the inner ring from the inner ring, the open end of the C-shaped buckle is welded on the surface of the outer ring, one side of the C-shaped buckle, which is tightly attached to the inner circumferential surface of the inner ring, is a hinged side capable of being opened and closed, the inner surface of the hinged side comprises latch teeth, and the inner surface of the inner ring comprises a clamping strip meshed with the latch teeth. Avoid inner circle and outer lane relative slip to appear through the cooperation of latch and card strip to guarantee that the device is stable firm when carrying out the pipeline butt joint alignment, simple structure, convenient and practical, labour saving and time saving.

Further, the outer ring comprises a semicircular upper portion and a semicircular lower portion, the top of the upper portion is vertically fixed with the horizontal rod body, the inner circumferential surface of the upper portion comprises a fixing groove used for being connected with the inner ring, a hollow groove with a T-shaped cross section is arranged in the upper portion inner cavity in a penetrating mode along the circumferential direction, the transverse portion of the hollow groove is parallel to the axis of the outer ring, the bottom end of the longitudinal portion extends towards the fixing groove to enable the cross section of the fixing groove to form a chevron shape, button holes communicated with the hollow groove are formed in the upper portion, the cross section of the lower portion is matched with the shape of the hollow groove, the end portion of the lower portion comprises a spring button capable of popping out along the button holes, the lower portion is rotatably contained in the hollow groove, and the outer circumferential surface of the inner ring comprises a clamping groove matched with the chevron shape of the fixing groove. Because the section of the fixed groove is in a Chinese character 'shan' -shaped, the fixed groove comprises a convex part which can extend into the clamping groove, and because the section of the lower part is matched with the shape of the hollow groove, the inner circumferential surface of the lower part also comprises a convex part which is connected with the convex part of the upper part, when the inner ring is combined with the outer ring, the convex parts of the upper part and the lower part are all embedded into the clamping groove, so that the inner ring can be stably combined with the outer ring, and the inner ring is not easy to shake and fall off in the using process; when the device is used, the lower part is pulled out from the hollow groove to be encircled into a complete ring with the upper part, and the upper part and the lower part are popped out and combined from the button holes at the corresponding positions through the spring buttons; when the storage device, press the spring button and push back the lower part to hollow inslot and make it accomodate in upper portion, spring button moves auto-eject when corresponding the button hole of position, prevents that the lower part from falling out in the upper portion, simple structure, convenient operation is convenient for accomodate, can change the inner ring alone simultaneously, does benefit to the maintenance, saves the cost.

Furthermore, the supporting assembly comprises a plurality of rod pieces, the rod pieces and the horizontal rods form an isosceles right triangle, and the horizontal rods are hypotenuses of the isosceles right triangle. The supporting function through the member prevents the horizontal rod from bending deformation in the using process, the influence on the accuracy of the alignment of the butt joint of the pipelines is avoided, the structure is simple, the use is convenient and practical, and the supporting performance is good.

Furthermore, one end of each rod piece close to the horizontal rod is hinged to the rod body of the horizontal rod, and the other end of each rod piece is detachably connected through a bolt to form a foldable structure. The one end of member all articulates in the pole body of horizon bar, and the other end joins with the other end of all the other members, forms integratively through bolted connection, and convenient the dismantlement rotates the member after dismantling the bolt of the other end when needs storage device, makes it form parallelly with the horizon bar, can reduce the device by a wide margin and accomodate required space, simple structure, convenient operation, nimble practicality is convenient for accomodate.

Compared with the prior art, the utility model has the beneficial effects that:

the pipeline butt straightening device is simple in structure, convenient to operate, stable, firm, convenient to store, capable of quickly achieving butt joint and straightening of pipelines, time-saving, labor-saving, suitable for pipelines with different diameters, economical and practical. The rings are arranged on the horizontal rods at intervals, the number of the rings is at least four, circle center connecting lines of the rings are parallel to the horizontal rods, the two rings penetrate through a pre-fixed pipeline and adjust the size of the rings to fix the device on the pre-fixed pipeline, the horizontal rods are parallel to the axis of the pipeline at the moment, the free pipeline to be connected penetrates through the residual rings and adjusts the size of the rings to enable the residual rings to be in full contact with the outer wall of the free pipeline, and therefore butt joint straightening of the pipeline can be completed.

Drawings

Fig. 1 is a front view of the overall structure of the present invention.

Fig. 2 is a side view of the overall structure of the present invention.

FIG. 3 is a schematic view of the overall structure of the outer ring of the present invention.

FIG. 4 is a cross-sectional view of a hollow channel of the present invention.

Fig. 5 is a cross-sectional view of the spring button of the present invention.

FIG. 6 is a schematic view of the inner ring structure of the present invention.

FIG. 7 is a schematic view of the rotation of the inner ring of the present invention.

The device comprises a support assembly, 11 rod pieces, 2 outer rings, 21 upper portions, 22 lower portions, 23 hollow grooves, 24 fixing grooves, 3 inner rings, 31 inner rings, 32 outer rings, 4 horizontal rods, 5 size adjusting assemblies, 51 clamping plates, 52 clamping rods, 6 circular rings and 7 locking assemblies.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

The present invention is further illustrated by the following examples, which are not intended to limit the scope of the utility model.

The pipeline butt joint straightening tool shown in the figure comprises a horizontal rod 4 with a certain length, a plurality of rings 6 which are arranged along the axial direction of the horizontal rod 4 at intervals and have the same direction, and supporting components 1 used for playing a reinforcing role, wherein the rings 6 are vertically and fixedly connected with the rod body of the horizontal rod 4, the size of the rings is adjustable, the number of the rings 6 is at least four, and the supporting components 1 are arranged on one side, opposite to the rings 6, of the rod body of the horizontal rod 4. By utilizing the principle of multipoint alignment, the rings are arranged on the horizontal rods at intervals, the number of the rings is at least four, the circle center connecting line of the rings is parallel to the horizontal rods, the device is fixed on the pre-fixed pipeline by enabling the two rings to penetrate through the pre-fixed pipeline and adjusting the size of the rings, the horizontal rods are parallel to the axis of the pipeline at the moment, the free pipeline to be connected penetrates through the residual rings and adjusts the size of the rings to enable the free pipeline to be fully contacted with the outer wall of the free pipeline, the butt joint alignment of the pipeline can be completed, only the axis of the free pipeline and the axis of the pre-fixed pipeline are positioned on the same line due to the fact that the circle centers of the rings are positioned on the same line, the residual rings can be in a state of fully contacting with the outer wall of the free pipeline, the supporting component is used for preventing the horizontal rods from bending deformation in the using process and avoiding influencing the accuracy of butt joint alignment of the pipeline, and can be used for the normal butt joint of the pipeline placed on the ground, meanwhile, the device can also be used for butt joint of pipelines separated from the ground, and can realize welding butt joint of the pipelines in sequence in the using process. The pipeline butt straightening device is simple in structure, convenient to operate, stable, firm, convenient to store, capable of quickly achieving butt joint and straightening of pipelines, time-saving, labor-saving, suitable for pipelines with different diameters, economical and practical.

Preferably, the circular ring 6 comprises an outer ring 2 and an inner ring 3 which are connected in a nested manner, the outer ring 2 is detachably connected with the inner ring 3, the top of the outer ring 2 is fixedly connected with the horizontal rod 4, and the size of the inner ring 3 is adjustable. The outer loop and the inner ring are in detachable connection, when the inner ring is damaged, the inner ring can be detached and replaced independently, the whole device is not required to be replaced, the maintenance cost is low, and the device is economical and practical.

Preferably, the inner ring 3 includes an inner ring 31, an outer ring 32 and a size adjusting assembly 5, the outer ring 32 is rotatably sleeved on the outer peripheral surface of the inner ring 31, the size adjusting assembly 5 includes six clamping plates 51 and six clamping rods 52 regularly arranged along the circumferential direction on the inner peripheral surface of the inner ring 31, the clamping plates 51 are obtuse triangles, the long sides of the clamping plates 51 include slide rails, one end of each long side is hinged to a six-equal-division point on the inner peripheral surface of the inner ring 31, the other end of each long side is slidably connected to the slide rail of the previous clamping plate 51, the six clamping plates 51 enclose a regular hexagon with adjustable size, one end of each clamping rod 52 is hinged to the obtuse angle of the corresponding clamping plate 51, the other end of each clamping rod passes through the inner ring 31 and is hinged to a six-equal-division point on the inner peripheral surface of the outer ring 32, the inner ring 31 includes a through groove arranged along the circumferential direction and used for accommodating the corresponding clamping plate 51, and the outer ring 2 is detachably connected to the outer ring 32. Preferably, the through groove is arranged between the six equal division points, so that the clamping rod can only slide along the through groove between two adjacent equal division points. As shown in fig. 6-7, the obtuse angle of each clamping plate is connected with a clamping rod, six clamping plates are in one-to-one correspondence with six equal dividing points on the inner peripheral surface of the inner ring, one end of each long edge of each clamping rod is connected with a slide rail of the previous clamping plate in a sliding manner to form a regular hexagon, the other end of each six equal dividing point on the inner peripheral surface of the outer ring is in one-to-one correspondence with the six equal dividing points on the inner peripheral surface of the outer ring, the other end of each clamping rod is driven to rotate by rotating the outer ring, the other end of each clamping rod moves along the direction close to or away from the center point, and then the other end of each long edge of each clamping plate slides along the slide rail of the previous clamping plate to adjust the size of the regular hexagon, so that the clamping rod is suitable for pipelines with different diameters.

Preferably, the inner ring 3 further comprises a locking assembly 7 for fixing the relative positions of the inner ring 31 and the outer ring 32. In order to prevent that relative slip from appearing at the in-process of pipeline butt joint alignment with the inner circle and making regular hexagon's size change, and then cause the influence to butt joint alignment effect, set up the locking subassembly in order to guarantee the result of use.

Preferably, the locking assembly 7 includes a C-shaped clip, the C-shaped clip is sleeved in the inner ring 31 from the inner ring 31 and welded to the surface of the outer ring 32 at the opening end thereof, one side of the C-shaped clip tightly attached to the inner circumferential surface of the inner ring 31 is an openable hinge side, and the inner surface of the hinge side includes a rubber layer. The inner ring is extruded through the hinged edge which can be opened and closed, relative sliding between the inner ring and the outer ring is avoided by utilizing the friction force of the rubber layer, and the device is stable and firm when the pipeline is butted and straightened, simple in structure, convenient and practical, and time-saving and labor-saving.

Preferably, the locking assembly 7 includes a C-shaped clip, the C-shaped clip is sleeved in the inner ring 31 from the inner ring 31 and welded to the surface of the outer ring 32 at the open end thereof, one side of the C-shaped clip abutting against the inner circumferential surface of the inner ring 31 is an openable hinged side, the inner surface of the hinged side includes a latch, and the inner surface of the inner ring 31 includes a strip engaging with the latch. The optimized latch is arranged on two sides of the through groove, and the inner ring and the outer ring are prevented from sliding relatively through the cooperation of the latch and the clamping strip, so that the stability and firmness of the device during the butt joint and straightening of the pipeline are ensured, the structure is simple, and the device is convenient, practical, time-saving and labor-saving.

Preferably, the outer ring 2 comprises a semicircular upper part 21 and a semicircular lower part 22, the top of the upper part 21 is vertically fixed with the rod body of the horizontal rod 4, the inner circumferential surface of the upper part 21 comprises a fixing groove 24 for connecting the inner ring 3, a hollow groove 23 with a T-shaped section is arranged in the inner cavity of the upper part 21 in a penetrating way along the circumferential direction, the transverse part of the hollow groove 23 is parallel to the axial line of the outer ring 2, the bottom end of the longitudinal part extends towards the fixing groove 24 to enable the section of the fixing groove 24 to form a chevron shape, the upper part 21 comprises button holes communicated with the hollow groove 23 near the two ends of the hollow groove 23, the section of the lower part 22 is matched with the shape of the hollow groove 23, the end part of the lower part comprises a spring button capable of popping up along the button holes, the lower part 22 is rotatably accommodated in the hollow groove 23, and the outer circumferential surface of the inner ring 3 comprises a clamping groove matched with the chevron shape of the fixing groove 24. As shown in fig. 4-5, since the cross section of the fixing groove is in a chevron shape, the fixing groove includes a protruding portion which can extend into the slot, and since the cross section of the lower portion is matched with the shape of the hollow groove, the inner circumferential surface of the lower portion also includes a protruding portion which is connected with the protruding portion of the upper portion, when the inner ring is combined with the outer ring, the protruding portions of the upper portion and the lower portion are both embedded into the slot, so that the inner ring can be stably combined with the outer ring, and the inner ring is not easy to shake and fall off in the using process; when the device is used, the lower part is pulled out from the hollow groove to be encircled into a complete ring with the upper part, and the upper part and the lower part are popped out and combined from the button holes at the corresponding positions through the spring buttons; when the storage device, press the spring button and push back the lower part to hollow inslot and make it accomodate in upper portion, spring button moves auto-eject when corresponding the button hole of position, prevents that the lower part from falling out in the upper portion, simple structure, convenient operation is convenient for accomodate, can change the inner ring alone simultaneously, does benefit to the maintenance, saves the cost.

Preferably, the supporting assembly 1 comprises a plurality of bars 11, the plurality of bars 11 and the horizontal bar 4 form an isosceles right triangle, and the horizontal bar 4 is a hypotenuse of the isosceles right triangle. As shown in figure 1, the supporting component and the horizontal rod are combined to form a plurality of right-angled triangles with different sizes, the stability principle of the triangles is utilized, the horizontal rod is prevented from bending and deforming in the using process through the supporting action of the rod piece, the influence on the alignment accuracy of the butt joint of the pipeline is avoided, the structure is simple, the use is convenient and practical, and the supporting performance is good.

Preferably, one end of the plurality of rod pieces 11 close to the horizontal rod 4 is hinged with the horizontal rod 4, and the other end is detachably connected through bolts to form a foldable structure. The one end of member all articulates in the pole body of horizon bar, and the other end joins with the other end of all the other members, forms integratively through bolted connection, and convenient the dismantlement rotates the member after dismantling the bolt of the other end when needs storage device, makes it form parallelly with the horizon bar, can reduce the device by a wide margin and accomodate required space, simple structure, convenient operation, nimble practicality, the convenient storage.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims (9)

1. The utility model provides a pipeline butt joint alignment instrument which characterized in that: including horizontal pole (4) that have certain length, still include along the unanimous ring of a plurality of directions (6) that horizontal pole (4) axial interval set up and be used for playing the supporting component (1) of reinforcing effect, ring (6) and the perpendicular fixed connection of horizontal pole (4) pole body and its size are adjustable, ring (6) include four at least, supporting component (1) set up in one side of horizontal pole (4) pole body for ring (6).

2. The pipe butt straightening tool according to claim 1, wherein: the ring (6) comprises an outer ring (2) and an inner ring (3) which are connected in a nested manner, the outer ring (2) and the inner ring (3) are detachably connected, the top of the outer ring (2) is fixedly connected with the rod body of the horizontal rod (4), and the size of the inner ring (3) is adjustable.

3. The pipe butt straightening tool according to claim 2, wherein: the inner ring (3) comprises an inner ring (31), an outer ring (32) and a size adjusting component (5), the outer ring (32) is rotatably sleeved on the outer peripheral surface of the inner ring (31), the size adjusting component (5) comprises six clamping plates (51) and six clamping rods (52), the six clamping plates are regularly arranged on the inner peripheral surface of the inner ring (31) along the circumferential direction, each clamping plate (51) is in an obtuse triangle shape, the long edges of the clamping plates (51) comprise sliding rails, one end of each long edge is hinged to a six-equal-point position of the inner peripheral surface of the inner ring (31), the other end of each long edge is connected with the corresponding sliding rail of the previous clamping plate (51) in a sliding mode, the six clamping plates (51) are enclosed to form a regular hexagon with adjustable size, one end of each clamping rod (52) is hinged to the obtuse angle position of each clamping plate (51), the other end of each clamping rod penetrates through the inner ring (31) to be hinged to the six-equal-point position of the inner peripheral surface of the outer ring (32), the inner ring (31) comprises a through groove which is arranged along the circumferential direction and is used for accommodating the clamping plates (51) to penetrate through, the outer ring (2) is detachably connected with the outer ring (32).

4. The pipe butt straightening tool according to claim 3, wherein: the inner ring (3) further comprises a locking assembly (7) for fixing the relative positions of the inner ring (31) and the outer ring (32).

5. The pipe butt straightening tool according to claim 4, wherein: the locking assembly (7) comprises a C-shaped buckle, the C-shaped buckle is sleeved in the inner ring (31) from the inner ring (31) in a sleeved mode, the opening end of the C-shaped buckle is welded to the surface of the outer ring (32), one side, close to the inner circumferential surface of the inner ring (31), of the C-shaped buckle is a hinged side capable of being opened and closed, and the inner surface of the hinged side comprises a rubber layer.

6. The pipe butt straightening tool according to claim 4, wherein: the locking assembly (7) comprises a C-shaped buckle, the C-shaped buckle is sleeved in the inner ring (31) from the inner ring (31) in a sleeved mode, the open end of the C-shaped buckle is welded to the surface of the outer ring (32), one side, close to the inner circumferential surface of the inner ring (31), of the C-shaped buckle is a hinged side capable of being opened and closed, the inner surface of the hinged side comprises clamping teeth, and the inner surface of the inner ring (31) comprises clamping strips meshed with the clamping teeth.

7. The pipe butt straightening tool according to claim 2, wherein: the outer ring (2) comprises a semicircular arc-shaped upper part (21) and a semicircular arc-shaped lower part (22), the top of the upper part (21) is vertically fixed with a horizontal rod body (4), the inner circumferential surface of the upper part (21) comprises a fixing groove (24) used for connecting the inner ring (3), a hollow groove (23) with a T-shaped section is arranged in the inner cavity of the upper part (21) in a penetrating manner along the circumferential direction, the transverse part of the hollow groove (23) is parallel to the axis of the outer ring (2), the bottom end of the longitudinal part extends towards the direction of the fixing groove (24) to enable the section of the fixing groove (24) to form a chevron shape, two ends of the upper part (21) close to the hollow groove (23) comprise button holes communicated with the hollow groove (23), the section of the lower part (22) is matched with the shape of the hollow groove (23), the end part of the lower part comprises a spring button capable of popping along the button holes, and the lower part (22) can be rotatably accommodated in the hollow groove (23), the outer peripheral surface of the inner ring (3) comprises a clamping groove matched with the chevron shape of the fixing groove (24).

8. The pipe butt straightening tool according to any one of claims 1 to 7, wherein: the supporting assembly (1) comprises a plurality of rod pieces (11), the rod pieces (11) and the horizontal rods (4) form an isosceles right triangle, and the horizontal rods (4) are hypotenuses of the isosceles right triangle.

9. The pipe butt straightening tool according to claim 8, wherein: one end of the rod pieces (11) close to the horizontal rod (4) is hinged with the rod body of the horizontal rod (4), and the other end of the rod pieces is detachably connected through bolts to form a foldable structure.

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