CN111922811B - Auxiliary mechanism for petroleum pipeline elbow - Google Patents

Abstract

The invention discloses an auxiliary mechanism for petroleum pipeline bending, which belongs to the technical field of petroleum pipeline processing and comprises a pipe bending device, an auxiliary table, a polishing device, an auxiliary device, a fixing device and a limiting device, wherein the polishing device comprises an adjusting component and a polishing component, the auxiliary device is arranged at the front end of the polishing device, the fixing device comprises a driving component and a fixing component, the fixing component is arranged at the front end of the polishing device, the driving component is arranged on the adjusting component and matched with the fixing component, the limiting device comprises a limiting component and a plurality of limiting components, the limiting components are distributed at the front part of the polishing component at equal intervals, the limiting component is arranged above the adjusting component and matched with all the limiting components. According to the pipe bending device, the auxiliary device can reduce or even prevent the deformation of the bent position of the pipe during pipe bending, and the grinding device can grind the bent position of the pipe, so that the quality of the pipe is improved.

Description

Auxiliary mechanism for petroleum pipeline elbow

Technical Field

The invention relates to the technical field of petroleum pipeline processing, in particular to an auxiliary mechanism for a petroleum pipeline elbow.

Background

Pipeline transportation is the most common transportation mode for petroleum, and for some joints, the pipeline is sometimes required to be bent to be installed in a matching manner except for connecting and steering the pipeline by using a connecting head.

The existing pipeline bending machine drives a pipeline to bend around a bending point through the rotation of a bending arm. However, such a bending machine has the following disadvantages in bending a petroleum pipeline. First, the pipe is easy to deform when bent, i.e., the distance between the pipe and the two sides where the bending arm and the bending point contact can be reduced, but the distance between the upper and lower sides can be increased, which generally causes the pipe section to change from a circular shape to an oval shape, which can affect the circulation speed of oil in the pipe. Second, petroleum pipeline is when the actual use, because petroleum crude oil's density is very big, easily leads to the velocity of flow to put down by a wide margin when the department of buckling through the pipeline, and then influences the transportation of petroleum, and the unevenness of pipeline inner wall also can cause the influence to the circulation of petroleum when bending, increases the friction of petroleum and pipeline even, leads to pipeline life to reduce.

Disclosure of Invention

The invention aims to provide an auxiliary mechanism for petroleum pipeline bending, which aims to solve the technical problems that a bent part is easy to deform and cannot be polished in time in the petroleum pipeline bending process in the prior art.

The invention provides an auxiliary mechanism for petroleum pipeline bending, which comprises a pipe bending device, an auxiliary table, a polishing device, an auxiliary device, a fixing device and a limiting device, wherein the polishing device is arranged on the auxiliary table and comprises an adjusting component and a polishing component, the polishing component is arranged at the upper end of the adjusting component, the auxiliary device is arranged at the front end of the polishing device, the fixing device comprises a driving component and a fixing component, the fixing component is arranged at the front end of the polishing device, the driving component is arranged on the adjusting component and matched with the fixing component, the limiting device comprises a limiting component and a plurality of limiting components, the limiting components are distributed at the front part of the polishing component at equal intervals, the limiting component is arranged above the adjusting component and matched with all the limiting components.

Further, the adjusting part includes that the arc removes frame, alignment jig, accommodate the lead screw slip table, regulating block and two regulation guide arms, be equipped with the arc track on the auxiliary table, the arc removes frame and arc track sliding fit, and the arc removes the frame and cooperatees with swan neck system, the adjusting block is installed and is removed the middle part of putting up and alignment jig at the arc and be equipped with the mounting groove, the accommodate the lead screw slip table is the level setting in the mounting groove, the lower extreme of regulating block and the slider fixed connection of accommodate the lead screw slip table, two regulation guide arm symmetries set up in the both sides of adjusting block and two regulation guide arms all with adjusting block sliding fit.

Further, the polishing assembly comprises a polishing motor, a polishing shaft and a polishing head, the polishing motor is arranged in the adjusting block, one end of the polishing shaft is fixedly connected with the output end of the polishing motor, the other end of the polishing shaft is fixedly connected with the auxiliary device, and the polishing head is arranged at the front end of the auxiliary device.

Further, auxiliary device includes the supplementary piece that a plurality of interval set up, all is equipped with articulated piece between every two adjacent supplementary pieces, and the both sides of every articulated piece are equallyd divide and have been laid bellying and depressed part, every the both ends of supplementary piece all are equipped with the connecting axle that is used for being connected with supplementary piece, and the bellying and the depressed part grafting cooperation of two adjacent supplementary pieces, the face that the pipeline was swept during the perpendicular swan neck system return bend of axis of connecting axle.

Further, the fixing component comprises a fixing rope, a fixing ring, a fixing block, a fixing threaded shaft and a plurality of connecting blocks, the connecting blocks are arranged at the lower end of the polishing shaft at equal intervals, all the connecting blocks are fixedly connected with the fixing threaded shaft, the fixing threaded shaft is rotatably connected with all the connecting blocks, the fixing block is sleeved on the polishing shaft and is in sliding fit with the polishing shaft, the lower part of the fixing block is in threaded fit with the fixing threaded shaft, a connecting buckle is arranged at one side of the fixing block, one end of the fixing rope is connected with the fixing ring, the fixing ring is matched with the connecting buckle, the other end of the fixing rope is fixedly connected with one side of the auxiliary block at the front end of the polishing shaft, through holes for the fixing rope to penetrate through are formed in all other auxiliary blocks, a stop block is arranged between every two adjacent auxiliary blocks and is fixedly connected with any one of the two sides, and the thickness of the stop blocks is, all the stop blocks and the connecting ropes are positioned on one side, close to the outer side of the pipeline, of the auxiliary block during pipe bending.

Further, drive assembly includes drive gear, drives rack, U type frame, drive lead screw slip table and two lift cylinders, drive gear installs on fixed thread is epaxial, and two lift cylinders set up and remove on the frame at the arc, drive lead screw slip table sets up below drive gear and drive lead screw slip table and two lift cylinder's output fixed connection, U type frame sets up on the slider of drive lead screw slip table, it sets up in U type frame and sliding fit between the two to drive the rack, it is equipped with a plurality of drive spring to drive between rack and the U type frame.

Further, spacing subassembly includes go-between, connection bearing and spacing ring, go-between and the axle fixed connection that polishes, and be equipped with the connecting hole that supplies fixed threaded shaft to pass on the go-between, the connection bearing cover is established on the go-between, the spacing ring cover is established on connection bearing, be equipped with three spacing piece on the spacing ring, every the one end of spacing piece all articulates with the go-between, every the other end of spacing piece all is equipped with spacing wheel, be equipped with spacing spring between spacing piece and the spacing ring.

Furthermore, the restriction subassembly includes that the transversal curved restriction shell, two restriction tracks of personally submitting, restriction frame, restriction sleeve pipe, restriction pole and restriction spring, the restriction shell cover is established in the outside of the subassembly of polishing, and two restriction tracks set up respectively in the both sides of alignment jig, two lower extremes of restriction shell respectively with two restriction track sliding fit, the top at the restriction shell is erect to the restriction frame, the restriction sleeve pipe sets up the upper end at the restriction frame, the restriction spring sets up the inside at the restriction frame, the one end of restriction pole and the front end fixed connection of restriction shell, the other end of restriction pole is pegged graft at the restriction sleeve intraductally and is contradicted with the restriction spring.

Furthermore, each of the two sides of the auxiliary block is provided with a chamfer, and each auxiliary block is provided with an auxiliary wheel ring.

Compared with the prior art, the invention has the beneficial effects that:

(1) the pipe bending device, the grinding device and the auxiliary device arranged on the grinding device move synchronously during working; when the pipe bending device bends the pipeline, the arc moving frame can be driven to move along the arc track, so that the pipeline, the grinding device and the auxiliary device are always in a relatively static state and synchronously work, the positions of the grinding device and the auxiliary device do not need to be adjusted around the pipe bending, the operation is simple, and the processing precision is higher.

(2) According to the invention, the grinding device is used for grinding the bent part of the pipeline to smooth the inner wall of the pipeline, so that the influence on the transportation of petroleum caused by the rough inner wall of the pipeline caused by bending is avoided, and the service life of the pipeline is prolonged.

(3) When the auxiliary block type pipe bending machine works, the contact points of the two sides of the pipe, the pipe bending arms and the pipe bending points are expanded through all the auxiliary blocks, so that the two sides of the pipe can be prevented from deforming in the pipe bending process, the pipe bending quality is improved, the deformation of the bent part of the pipe during pipe bending can be reduced and even avoided, and the quality of the pipe bending is ensured.

(4) According to the invention, the driving assembly works to drive the fixed threaded shaft to rotate, so that the fixed block moves along the fixed threaded shaft, the fixed rope is tensioned, and further the axes of all the auxiliary blocks are collinear, thus the eccentric shaking of the polishing head during the working of the polishing assembly can be avoided, and the polishing effect and precision are improved.

(5) According to the invention, through the arrangement of the limiting assembly, the grinding shaft is fixed through the three limiting sheets of the limiting assembly and the fitting of the limiting wheels and the inner wall of the pipeline, the condition that the grinding head eccentrically shakes to influence the grinding effect in the grinding process can be prevented, and the grinding effect and precision are further improved.

(6) The limiting shell is arranged to be matched with all limiting assemblies in a non-working state, the position of the polishing head and the polishing shaft is fixed, when the polishing machine works, the pipeline abuts against one end of the limiting shell in the feeding process to push the limiting shell to move, and in the process, because the two ends of the pipeline and the limiting shell are in seamless abutting, the limiting assemblies matched with the limiting shell can be changed into matching with the inner wall of the pipeline from a matching state with the limiting shell.

(7) The arrangement of the chamfer angle on the auxiliary block and the auxiliary wheel ring is used for reducing the friction between the auxiliary block and the inner wall of the pipeline in the polishing process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C of FIG. 3;

FIG. 6 is a partial perspective view of the present invention;

FIG. 7 is an enlarged view taken at D in FIG. 6;

FIG. 8 is a partial front view of the present invention;

FIG. 9 is an enlarged view at E in FIG. 8;

fig. 10 is a partially disassembled view of the auxiliary device of the present invention.

Reference numerals:

the pipe bending device 1, the auxiliary table 2, the polishing device 3, the adjusting assembly 31, the arc moving frame 311, the adjusting frame 312, the adjusting screw sliding table 313, the adjusting block 314, the adjusting guide rod 315, the arc rail 316, the polishing assembly 32, the polishing motor 321, the polishing shaft 322, the polishing head 323, the auxiliary device 4, the auxiliary block 41, the hinge block 42, the protrusion 43, the recess 44, the connecting shaft 45, the fixing device 5, the driving assembly 51, the driving gear 511, the driving rack 512, the U-shaped frame 513, the driving screw sliding table 514, the lifting cylinder 515, the driving spring 516, the fixing assembly 52, the fixing rope 521, the fixing ring 522, the fixing block 523, the fixing threaded shaft 524, the connecting block 525, the connecting buckle 526, the stop 527, the limiting device 6, the limiting assembly 61, the limiting shell 611, the limiting frame 613, the limiting sleeve 614, the limiting rod 615, the limiting spring 616, the limiting assembly 62, the connecting ring 621, the, the limiting ring 623, a limiting sheet 624, a limiting spring 625, a limiting wheel 626, a chamfer 7 and an auxiliary wheel ring 8.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 10, an embodiment of the present invention provides an auxiliary mechanism for a petroleum pipeline elbow, including an elbow device 1, an auxiliary table 2, a polishing device 3, an auxiliary device 4, a fixing device 5 and a limiting device 6, wherein the polishing device 3 is disposed on the auxiliary table 2, the polishing device 3 includes an adjusting component 31 and a polishing component 32, the polishing component 32 is mounted on the upper end of the adjusting component 31, the auxiliary device 4 is disposed on the front end of the polishing device 3, the fixing device 5 includes a driving component 51 and a fixing component 52, the fixing component 52 is mounted on the front end of the polishing device 3, the driving component 51 is disposed on the adjusting component 31, the driving component 51 is matched with the fixing component 52, the limiting device 6 includes a limiting component 61 and a plurality of limiting components 62, the plurality of limiting components 62 are equidistantly distributed on the front portion of the polishing component 32, the limiting assembly 61 is arranged above the adjusting assembly 31, and the limiting assembly 61 is matched with all the limiting assemblies 62; when the petroleum pipeline bending device works, the auxiliary device 4 is matched with the pipe bending device 1 to bend a petroleum pipeline, so that the deformation of the bent part of the pipeline during pipe bending can be reduced and even avoided, the quality of the bent pipe is ensured, then, the bent part of the pipeline is polished by the polishing device 3, the inner wall of the bent pipe is smooth, the influence on petroleum transportation caused by the rough inner wall of the pipeline due to bending is avoided, and the service life of the pipeline is prolonged.

Specifically, the adjusting assembly 31 includes an arc moving frame 311, an adjusting frame 312, an adjusting screw sliding table 313, an adjusting block 314 and two adjusting guide rods 315, an arc rail 316 is disposed on the auxiliary table 2, the arc moving frame 311 is in sliding fit with the arc rail 316, and the arc moving frame 311 is matched with the pipe bending device 1; when the pipe bending device 1 bends the pipe, it will drive the arc moving rack 311 to move along the arc track 316, so that the pipeline, the grinding device 3 and the auxiliary device 4 are always in a relatively static state and synchronously work, the positions of the grinding device 3 and the auxiliary device 4 do not need to be adjusted before and after the pipe bending, the operation is simple, the processing precision is higher, the adjusting bracket 312 is installed on the arc moving bracket 311 and the middle of the adjusting bracket 312 is provided with an installation groove, the adjusting screw rod sliding table 313 is horizontally arranged in the mounting groove, the lower end of the adjusting block 314 is fixedly connected with a sliding block of the adjusting screw rod sliding table 313, the two adjusting guide rods 315 are symmetrically arranged at two sides of the adjusting frame 312, and the two adjusting guide rods 315 are both in sliding fit with the adjusting block 314, the grinding assembly 32 is driven to move by adjusting the work of the screw rod sliding table 313, so that the grinding thickness of the pipeline, which is ground by the grinding assembly 32, is controlled.

Specifically, the subassembly 32 of polishing includes grinding motor 321, the axle 322 and the head 323 of polishing, grinding motor 321 sets up in regulating block 314 and the one end of the axle 322 of polishing and grinding motor 321's output fixed connection, the other end and the 4 fixed connection of auxiliary device of the axle 322 of polishing, the head 323 of polishing sets up the front end at auxiliary device 4, and the during operation drives the axle 322 of polishing through grinding motor 321 work and rotates, and then drives the head 323 and rotate, polishes the inner wall spare of pipeline, and simultaneously, the work of accommodate the screw slip table 313 drives the subassembly 32 of polishing and removes, and the control is polished the head 323 and is to the inside thickness of polishing of pipeline.

Specifically, the auxiliary device 4 includes a plurality of auxiliary blocks 41 arranged at intervals, an articulated block 42 is arranged between every two adjacent auxiliary blocks 41, a convex portion 43 and a concave portion 44 are respectively distributed on two sides of each articulated block 42, a connecting shaft 45 used for connecting with the auxiliary blocks 41 is respectively arranged at two ends of each auxiliary block 41, the convex portions 43 and the concave portions 44 of the two adjacent auxiliary blocks 41 are in insertion fit, and the axis of the connecting shaft 45 is perpendicular to the surface swept by the pipeline when the pipe bending device 1 bends the pipe; referring to fig. 10, in operation, the auxiliary blocks 41 expand the contact points between the two sides of the pipeline and the pipe bending arms and the pipe bending points, so as to prevent the two sides of the pipeline from deforming during pipe bending, thereby improving the bending quality of the pipeline, wherein, because of different bending degrees of the pipeline, different auxiliary devices 4 need to be replaced, the distance between the adjacent auxiliary blocks 41 is changed, the larger the distance, the larger the bending degree of the auxiliary devices 4 is, the smaller the distance, the smaller the bending degree of the auxiliary devices 4 is, however, in the use, supplementary piece 41 interval can cause the face of auxiliary device 4 and pipeline contact to reduce greatly, leads to expanding to prop the effect not good to the pipeline, and supplementary piece 41 interval is little to expanding of pipeline and props effectually, nevertheless, can both reduce the deformation volume in the pipeline bending process, reaches corresponding effect.

Specifically, the fixing component 52 includes a fixing rope 521, a fixing ring 522, a fixing block 523, a fixing threaded shaft 524 and a plurality of connecting blocks 525, the plurality of connecting blocks 525 are arranged at the lower end of the polishing shaft 322 at equal intervals, all the connecting blocks 525 are fixedly connected with the fixing block 523, the fixing threaded shaft 524 is rotatably connected with all the connecting blocks 525, the fixing block 523 is sleeved on the polishing shaft 322 and is in sliding fit with the same, the lower part of the fixing block 523 is in threaded fit with the fixing threaded shaft 524, a connecting buckle 526 is arranged on one side of the fixing block 523, one end of the fixing rope 521 is connected with the fixing ring 522, the fixing ring 522 is matched with the connecting buckle 526, the other end of the fixing rope 521 is fixedly connected with one side of the auxiliary block 41 at the foremost end of the polishing shaft 322, through holes for the fixing rope 521 to pass through are arranged on all other auxiliary blocks 41, 527 is arranged between every two adjacent, the stop block 527 is fixedly connected with any one auxiliary block 41 on two sides, the thickness of the stop block 527 is equal to the distance between the two auxiliary blocks 41, and all the stop block 527 and the connecting rope are positioned on one side, close to the outer side of the pipeline, of the auxiliary block 41 during pipe bending; when the pipe bending is finished, grinding is needed, but since the auxiliary device 4 is positioned at the bending position during the pipe bending, therefore, the auxiliary device 4 is moved away from the bent pipe by the operation of the moving assembly, so that the polishing head 323 at the front end is positioned at the bent part, then the bending assembly operates to polish the bent part of the pipeline, the influence on the transportation of petroleum caused by the rough inner wall of the pipeline caused by bending is avoided, the service life of the pipeline is prolonged, since the auxiliary blocks 41 in the auxiliary device 4 are connected by shaking in order to match the bending of the pipeline, therefore, the polishing head 323 is swung during the polishing operation, and the polishing effect cannot be achieved, and at this time, the driving assembly 51 is operated to rotate the fixing threaded shaft 524, so that the fixing block 523 moves along the fixing threaded shaft 524, the fixing rope 521 is tightened, so that the axes of all the auxiliary blocks 41 are collinear, the connecting block 525 can prevent the fixing rope 521 from pulling the auxiliary blocks 41 to deflect excessively.

Specifically, drive assembly 51 includes drive gear 511, drive rack 512, U type frame 513, drive lead screw slip table 514 and two lift cylinders 515, drive gear 511 installs on fixed threaded shaft 524, and two lift cylinders 515 set up on arc removal frame 311, drive lead screw slip table 514 sets up below drive gear 511 and drive lead screw slip table 514 and two lift cylinders 515's output fixed connection, U type frame 513 sets up on the slider of drive lead screw slip table 514, drive rack 512 sets up in U type frame 513 and sliding fit between the two, be equipped with a plurality of drive spring 516 between drive rack 512 and the U type frame 513, during operation, promote drive rack 512 and drive gear 511 meshing through lift cylinder 515 work, later drive lead screw slip table 514 drives drive rack 512 and removes, and then drives drive gear 511 and rotate, therefore, the fixed threaded shaft 524 is driven to rotate, the fixed rope 521 is loosened and tensioned, when the polishing work is performed, the driving gear 511 is driven by the polishing shaft 322 to rotate together, and therefore the driving gear 511 cannot be meshed with the driving rack 512, at the moment, the driving rack 512 can be driven to move downwards through the work of the lifting cylinder 515, wherein a spring is arranged between the driving rack 512 and the U-shaped frame 513, when the lifting cylinder 515 pushes the driving rack 512 to move upwards, the teeth of the driving rack 512 possibly abut against the teeth of the driving gear 511, and cannot be meshed exactly at each work, at the moment, the driving rack 512 and the driving gear 511 can be prevented from being damaged through the contraction of the spring, and then when the driving rack 512 moves under the drive of the driving screw rod sliding table 514, the driving rack reaches the meshing position with the driving gear 511 under the action of the spring, and the meshing between.

Specifically, the limiting assembly 62 comprises a connecting ring 621, a connecting bearing 622 and a limiting ring 623, the connecting ring 621 is fixedly connected with the polishing shaft 322, a connecting hole for a fixing threaded shaft 524 to pass through is formed in the connecting ring 621, the connecting bearing 622 is sleeved on the connecting ring 621, the limiting ring 623 is sleeved on the connecting bearing 622, three limiting pieces 624 are arranged on the limiting ring 623, one end of each limiting piece 624 is hinged to the connecting ring 621, a limiting wheel 626 is arranged at the other end of each limiting piece 624, and a limiting spring 625 is arranged between each limiting piece 624 and the limiting ring 623; in the invention, as the length of the polishing shaft 322 is too long, and no fixing structure is arranged in the middle, the polishing head 323 can eccentrically shake in the polishing process, so that the polishing effect is influenced, at the moment, the polishing shaft 322 is fixed through the arrangement of the limiting component 62 and the fitting of the three limiting sheets 624 and the limiting wheels 626 of the limiting component 62 and the inner wall of the pipeline, and the condition that the polishing head 323 eccentrically shakes to influence the polishing effect in the polishing process can be prevented.

Specifically, the limiting assembly 61 includes a limiting shell 611 with an arc-shaped cross section, two limiting rails, a limiting frame 613, a limiting sleeve 614, a limiting rod 615 and a limiting spring 616, the limiting shell 611 is sleeved outside the polishing assembly 32, the two limiting rails are respectively disposed on two sides of the adjusting frame 312, two lower ends of the limiting shell 611 are respectively in sliding fit with the two limiting rails, the limiting frame 613 is erected above the limiting shell 611, the limiting sleeve 614 is disposed at the upper end of the limiting frame 613, the limiting spring 616 is disposed inside the limiting frame 613, one end of the limiting rod 615 is fixedly connected with the front end of the limiting shell 611, and the other end of the limiting rod 615 is inserted into the limiting sleeve 614 and abuts against the limiting spring 616; the restricting housing 611 is provided such that, when the present invention is engaged with all the restricting members 62 in a non-operating state, the polishing head 323 and the polishing shaft 322 are positionally fixed, and when the present invention is operated, the pipe abuts against one end of the restricting housing 611 in a loading process to push the restricting housing 611 to move, and in this process, since the pipe and both ends of the restricting housing 611 are in seamless abutment, the restricting members 62 engaged with the restricting housing 611 are also changed from a state engaged with the restricting housing 611 to an engagement with the inner wall of the pipe.

Specifically, chamfers 7 are arranged on two sides of each auxiliary block 41, and an auxiliary wheel ring 8 is arranged on each auxiliary block 41; the chamfer 7 and the auxiliary wheel ring 8 are used for reducing friction between the auxiliary block 41 and the inner wall of the pipeline in the grinding process.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The utility model provides a petroleum pipeline is complementary unit for return bend, includes swan neck system (1), its characterized in that: the polishing device is characterized by further comprising an auxiliary table (2), a polishing device (3), an auxiliary device (4), a fixing device (5) and a limiting device (6), wherein the polishing device (3) is arranged on the auxiliary table (2), the polishing device (3) comprises an adjusting component (31) and a polishing component (32), the polishing component (32) is arranged at the upper end of the adjusting component (31), the auxiliary device (4) is arranged at the front end of the polishing device (3), the fixing device (5) comprises a driving component (51) and a fixing component (52), the fixing component (52) is arranged at the front end of the polishing device (3), the driving component (51) is arranged on the adjusting component (31) and the driving component (51) is matched with the fixing component (52), the limiting device (6) comprises a limiting component (61) and a plurality of limiting components (62), and the plurality of limiting components (62) are distributed at the front part of the polishing component (32) at equal intervals, restriction subassembly (61) are installed and are cooperateed in top and restriction subassembly (61) and all spacing subassemblies (62) of adjusting part (31), adjusting part (31) are including arc removal frame (311), alignment jig (312), accommodate the lead screw slip table (313), regulating block (314) and two regulation guide arms (315), be equipped with arc track (316) on supplementary platform (2), arc removal frame (311) and arc track (316) sliding fit, and arc removal frame (311) cooperate with swan neck system (1), the middle part that just adjusting frame (312) was installed on arc removal frame (311) in alignment jig (312) is equipped with the mounting groove, accommodate the lead screw slip table (313) are the level setting in the mounting groove, the lower extreme of regulating block (314) and the slider fixed connection who adjusts lead screw slip table (313), two regulation guide arms (315) symmetry set up in the both sides of adjusting frame (312) and two regulation guide arms (315) all with adjusting block (314) And (4) sliding fit.

2. The petroleum pipeline elbow assist mechanism of claim 1, wherein: the grinding assembly (32) comprises a grinding motor (321), a grinding shaft (322) and a grinding head (323), wherein the grinding motor (321) is arranged in the adjusting block (314) and one end of the grinding shaft (322) is fixedly connected with the output end of the grinding motor (321), the other end of the grinding shaft (322) is fixedly connected with the auxiliary device (4), and the grinding head (323) is arranged at the front end of the auxiliary device (4).

3. The petroleum pipeline elbow assist mechanism of claim 2, wherein: auxiliary device (4) include auxiliary block (41) that a plurality of interval set up, all are equipped with articulated piece (42) between every two adjacent auxiliary block (41), and the both sides of every articulated piece (42) are equallyd divide and have been laid bellying (43) and depressed part (44), every the both ends of auxiliary block (41) all are equipped with connecting axle (45) that are used for being connected with auxiliary block (41), and bellying (43) and depressed part (44) grafting cooperation of two adjacent auxiliary block (41), the face that the pipeline was swept when the perpendicular swan neck system of axis (1) of connecting axle (45) was bent the pipe.

4. An assist mechanism for a petroleum pipe elbow as defined in claim 3, wherein: the fixed component (52) comprises a fixed rope (521), a fixed ring (522), a fixed block (523), a fixed threaded shaft (524) and a plurality of connecting blocks (525), wherein the connecting blocks (525) are arranged at the lower end of the grinding shaft (322) at equal intervals, all the connecting blocks (525) are fixedly connected with the fixed block, the fixed threaded shaft (524) is rotatably connected with all the connecting blocks (525), the fixed block (523) is sleeved on the grinding shaft (322) and is in sliding fit with the grinding shaft and the grinding shaft, the lower part of the fixed block (523) is in threaded fit with the fixed threaded shaft (524), one side of the fixed block (523) is provided with a connecting buckle (526), one end of the fixed rope (521) is connected with the fixed ring (522), the fixed ring (522) is matched with the connecting buckle (526), and the other end of the fixed rope (521) is fixedly connected with one side of an auxiliary block (41) at the foremost end of the grinding shaft (, all be equipped with the through-hole that supplies fixed rope (521) to run through on other all supplementary piece (41), all be equipped with dog (527) between every two adjacent supplementary pieces (41), dog (527) and arbitrary one of both sides supplementary piece (41) fixed connection, the thickness of dog (527) equals with the interval between two supplementary pieces (41), all dog (527) and connection rope all are located supplementary piece (41) and are close to the one side in the pipeline outside when the return bend.

5. The petroleum pipeline elbow assist mechanism of claim 4, wherein: drive assembly (51) are including drive gear (511), drive rack (512), U type frame (513), drive lead screw slip table (514) and two lift cylinder (515), drive gear (511) are installed on fixed thread axle (524), and two lift cylinder (515) set up on arc removal frame (311), drive lead screw slip table (514) set up in the below of drive gear (511) and drive lead screw slip table (514) and the output fixed connection of two lift cylinder (515), U type frame (513) set up on the slider of drive lead screw slip table (514), drive rack (512) set up in U type frame (513) and sliding fit between the two, be equipped with a plurality of drive spring (516) between drive rack (512) and U type frame (513).

6. The petroleum pipeline elbow assist mechanism of claim 4, wherein: spacing subassembly (62) include go-between (621), connection bearing (622) and spacing ring (623), go-between (621) and grinding shaft (322) fixed connection, and be equipped with the connecting hole that supplies fixed threaded shaft (524) to pass on go-between (621), connection bearing (622) cover is established on go-between (621), spacing ring (623) cover is established on connection bearing (622), be equipped with three spacing piece (624) on spacing ring (623), every the one end of spacing piece (624) all is articulated with go-between (621), every the other end of spacing piece (624) all is equipped with spacing wheel (626), be equipped with spacing spring (625) between spacing piece (624) and spacing ring (623).

7. The petroleum pipeline elbow assist mechanism of claim 6, wherein: the limiting component (61) comprises a limiting shell (611) with an arc-shaped cross section, two limiting rails, a limiting frame (613), a limiting sleeve (614), a limiting rod (615) and a limiting spring (616), the limiting shell (611) is sleeved outside the grinding assembly (32), the two limiting rails are respectively arranged at two sides of the adjusting frame (312), the two lower ends of the limiting shell (611) are respectively matched with the two limiting tracks in a sliding way, the limiting frame (613) is erected above the limiting shell (611), the restricting sleeve (614) is disposed at an upper end of the restricting frame (613), the restricting spring (616) is disposed inside the restricting frame (613), one end of the restricting lever (615) is fixedly connected with the front end of the restricting housing (611), the other end of the limiting rod (615) is inserted into the limiting sleeve (614) and is abutted against the limiting spring (616).

8. An assist mechanism for a petroleum pipe elbow as defined in claim 3, wherein: each two sides of the auxiliary block (41) are provided with chamfers (7), and each auxiliary block (41) is provided with an auxiliary wheel ring (8).

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