Pipeline internal welding machine partition tensioning device and pipeline internal welding machine

Abstract

The invention relates to the technical field of pipeline welding, and discloses a pipeline internal welding machine partition tensioning device and a pipeline internal welding machine. The partition tensioning device comprises a partition tensioning mechanism and a power mechanism; the partition tensioning mechanism comprises a mounting main body and a plurality of ejector rod tensioning shoe assemblies connected to the mounting main body, the ejector rod tensioning shoe assemblies are arranged in pairs in the annular direction of the mounting main body, and each pair of ejector rod tensioning shoe assemblies are arranged in the axial direction of the mounting main body; the power mechanism is connected with the multiple ejector rod expansion shoe assemblies and is configured to drive at least one ejector rod expansion shoe assembly to stretch out and draw back every time. According to the partition tensioning device of the pipeline internal welding machine, the pipe opening assembling efficiency can be improved, and then the construction efficiency of pipeline automatic welding is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline welding, and in particular to a zone tensioning device for an internal pipeline welder and an internal pipeline welder. Background Art

[0002] The automatic internal pipe welding machine is a construction equipment that is placed inside the pipe during operation and is used for automatic welding of the root of the pipe girth weld. The automatic internal pipe welding machine usually includes a tensioning mechanism, which can be used to position the two pipes and complete the pipe mouth assembly before welding.

[0003] In the related art, the tension mechanism of the automatic internal pipe welding machine has two rows of expansion shoes, the front and rear rows of which are expanded and contracted at the same time under the action of the tension cylinder, which can only realize the tension positioning of the pipe, but cannot adjust the misalignment between the two pipe openings. Therefore, when welding the pipe, it is necessary to repeatedly adjust the position of the pipe opening and repeatedly measure the misalignment, which consumes a lot of time and manpower and affects the efficiency of pipeline construction. Summary of the invention

[0004] In view of this, the present application provides a zone tensioning device for an in-pipeline welder and an in-pipeline welder, which can improve the efficiency of pipe mouth pairing and thus improve the construction efficiency of automatic pipeline welding.

[0005] Specifically, the following technical solutions are included:

[0006] In one aspect, an embodiment of the present application provides a zone tensioning device for a pipeline welding machine, the device comprising: a zone tensioning mechanism and a power mechanism;

[0007] The partition tensioning mechanism includes a mounting body, and a plurality of push rod expansion shoe assemblies connected to the mounting body, wherein the plurality of push rod expansion shoe assemblies are arranged in pairs along the circumferential direction of the mounting body, and each pair of the push rod expansion shoe assemblies is arranged along the axial direction of the mounting body;

[0008] The power mechanism is connected to the plurality of push rod expansion shoe assemblies respectively, and is configured to drive at least one of the push rod expansion shoe assemblies to perform a telescopic action each time.

[0009] Optionally, the installation body includes: a central flange shaft assembly and a connecting assembly;

[0010] The connecting assembly is located in the radial direction of the central flange shaft assembly and is connected to the central flange shaft assembly;

[0011] The connecting assembly is connected to the push rod expansion shoe assembly.

[0012] Optionally, the central flange shaft assembly comprises: a central flange shaft, two first flange plates, two second flange plates and two support plates;

[0013] The two first flanges are fixed on the outer wall of the central flange shaft and are respectively arranged close to the two ends of the central flange shaft in the axial direction;

[0014] The two second flanges are fixed at intervals on the outer wall of the central flange shaft and are located between the two first flanges;

[0015] The two support plates are respectively connected to the sides of the two second flange plates which are away from each other.

[0016] Optionally, the connection assembly comprises: a connecting rod and a tensioning base;

[0017] The connecting rod member passes through the two supporting plates and is fixedly connected to the two supporting plates;

[0018] The tensioning base is located between the two support plates and is fixedly connected to the connecting rod, wherein a plug hole is formed through the tensioning base, and the axial direction of the plug hole is parallel to the radial direction of the central flange shaft assembly;

[0019] A push rod expansion shoe assembly is inserted into the insertion hole, and the push rod expansion shoe assembly can move along the axial direction of the insertion hole.

[0020] Optionally, the power mechanism comprises: a power assembly and a reversing transmission assembly;

[0021] The power assembly is connected to the reversing transmission assembly and is used to drive the reversing transmission assembly to move along the axial direction of the central flange shaft assembly;

[0022] The push rod expansion shoe assembly cooperates with the reversing transmission assembly and can move radially along the central flange shaft assembly under the actuation of the reversing transmission assembly.

[0023] Optionally, the reversing transmission assembly comprises: a push plate member and a ramp member;

[0024] The push plate member is connected to the inclined block member, and a side of the push plate member away from the inclined block member is connected to the power assembly;

[0025] The inclined block is located in the retraction direction of the push rod expansion shoe assembly, and the inclined block has an inclined surface, and the push rod expansion shoe assembly can move on the inclined surface, wherein the inclined surface is configured as follows: the closer it is to the axis of the center flange shaft assembly, the farther it is from another push rod expansion shoe assembly that is paired with the push rod expansion shoe assembly.

[0026] Optionally, the partition tensioning mechanism further comprises: a fixing assembly and a guide shaft assembly;

[0027] The fixing assembly is connected to the first flange, and the power assembly is installed on the fixing assembly;

[0028] The guide shaft assembly is sequentially inserted into the fixed assembly, the push plate member and the support plate, wherein the guide shaft assembly is fixedly connected to the fixed assembly and the support plate respectively, and the guide shaft assembly is movably connected to the push plate member, and limits the moving direction of the push plate member to be along the axial direction of the guide shaft.

[0029] Optionally, the push rod expansion shoe assembly comprises: an expansion shoe, a push rod, a roller bracket, a roller and a connecting pin;

[0030] The expansion shoe and the roller bracket are respectively connected to the two ends of the push rod;

[0031] The roller is rotatably connected to the roller bracket via the connecting pin, and the roller can roll on the inclined plane.

[0032] Optionally, the device further comprises: an induction control mechanism;

[0033] The sensing control mechanism is configured to control the power mechanism to drive at least one of the pair of push rod expansion assemblies to perform a telescopic action when it is detected that the misalignment of the pipe openings of the pipeline partition corresponding to any pair of push rod expansion assemblies meets the set conditions.

[0034] On the other hand, an embodiment of the present application provides an in-pipeline welder, which includes the above-mentioned zone tensioning device for the in-pipeline welder.

[0035] The beneficial effects of the technical solution provided by the embodiments of the present application include at least:

[0036] The embodiment of the present application provides a zoned tensioning device for an in-pipe welding machine and an in-pipe welding machine, wherein a plurality of push rod expansion shoe assemblies in the zoned tensioning mechanism are arranged in pairs along the circumferential direction of the installation body, and each pair of push rod expansion shoe assemblies is arranged along the axial direction of the installation body. In the pipeline welding scenario, the plurality of push rod expansion shoe assemblies of the zoned tensioning mechanism are divided into two groups along the axial direction and are respectively arranged at the pipe orifices of two pipes, wherein each group of push rod expansion shoe assemblies abuts against different parts of a pipe in the circumferential direction, and the two paired push rod expansion shoe assemblies abut against the same parts of the pipe orifices of the two pipes, respectively, so as to facilitate the zoned tensioning of each pipe; and the power mechanism can drive the push rod expansion shoe assemblies to perform telescopic movement. When applied, the power mechanism can be used to drive all the push rod expansion shoe assemblies to achieve tensioning and positioning of the pipes. After that, if there is still a misalignment amount at a certain part of the pipe orifices of the two pipes, the misalignment amount between the two pipe orifices can be flexibly adjusted by controlling the telescopic movement of at least one push rod expansion shoe assembly abutting against the part of the pipe orifice, so that the pipe orifices of the two pipes correspond to each other and meet the welding process requirements. Therefore, compared with the tensioning mechanism in the prior art in which the front and rear rows of expansion shoes perform telescopic movements simultaneously under the action of the tensioning cylinder, the efficiency of pipe mouth pairing can be improved when the partitioned tensioning device of the pipeline welding machine provided in the present application is used to pair the pipe mouths, without the need to rotate the pipe, repeatedly tighten and position, and repeatedly measure the misalignment between the two pipe mouths, thereby saving manpower and time, and helping to improve the construction efficiency of automatic pipeline welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 A schematic structural diagram of a first type of zone tensioning device for a pipeline welder provided in an embodiment of the present application is shown;

[0039] Figure 2 A schematic diagram of the structure of a second type of zone tensioning device for a pipeline welder provided in an embodiment of the present application is shown;

[0040] Figure 3 A schematic structural diagram of a center flange shaft assembly provided in an embodiment of the present application is shown;

[0041] Figure 4 A schematic diagram of the structure of a third type of zone tensioning device for a pipeline welder provided in an embodiment of the present application is shown;

[0042] Figure 5 A schematic structural diagram of a fourth type of zone tensioning device for a pipeline welder provided in an embodiment of the present application is shown;

[0043] Figure 6 A schematic structural diagram of a reversing transmission assembly provided in an embodiment of the present application is shown;

[0044] Figure 7 A schematic structural diagram of a fifth type of zone tensioning device for a pipeline welder provided in an embodiment of the present application is shown;

[0045] Figure 8 A schematic structural diagram of a push rod expansion shoe assembly provided in an embodiment of the present application is shown;

[0046] Fig. 9 A schematic structural diagram of a sixth type of zone tensioning device for a pipeline welder provided in an embodiment of the present application is shown;

[0047] Fig.10 A structural schematic diagram of a seventh type of zone tensioning device for a pipeline welding machine provided in an embodiment of the present application is shown.

[0048] Reference numerals:

[0049] 100, partition tensioning mechanism; 110, push rod tensioning shoe assembly; 111, tensioning shoe; 112, push rod; 113, roller bracket; 114, roller; 115, connecting pin; 120, center flange shaft assembly; 121, center flange shaft; 122, first flange; 123, second flange; 124, support plate; 130 connecting assembly; 131, connecting rod; 132, tensioning base; 140, fixing assembly; 150, guide shaft assembly; 160, intermediate fixing plate; 170, rotating assembly;

[0050] 200, power mechanism; 210, power assembly; 220, reversing transmission assembly; 221, push plate member; 222, inclined block member; 2221, inclined surface; 2222, mounting hole; 230, hydraulic cylinder; 240, hydraulic power station; 250, hydraulic confluence assembly;

[0051] 300, induction control mechanism; 310, control module; 320, sensor module. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] The automatic internal pipe welding machine is a construction equipment that is placed inside the pipe during operation and is used for automatic welding of the root of the pipe girth weld. The automatic internal pipe welding machine usually includes a tensioning mechanism, which can be used to position the two pipes and complete the pipe mouth assembly before welding.

[0054] In the related art, the tension mechanism of the automatic internal pipe welding machine has two rows of expansion shoes, the front and rear rows of which are expanded and contracted at the same time under the action of the tension cylinder, which can only realize the tension positioning of the pipe, but cannot adjust the misalignment between the two pipe openings. Therefore, when welding the pipe, it is necessary to repeatedly adjust the position of the pipe opening and repeatedly measure the misalignment, which consumes a lot of time and manpower and affects the efficiency of pipeline construction.

[0055] To solve the above problems, an embodiment of the present application provides a zoned tensioning device for a pipeline internal welding machine. When the internal welding machine performs pipe mouth assembly, the misalignment amount of the pipeline is adjusted in zones by controlling the telescopic action of at least one expansion shoe to meet the welding process requirements of the internal welding machine. There is no need to rotate the pipeline, repeatedly tighten and position, and repeatedly measure and compare the misalignment amount of the pipeline, which saves manpower and time and improves the construction efficiency of automatic pipeline welding.

[0056] like Figure 1 As shown, the zoned tensioning device of the in-pipe welding machine provided in the embodiment of the present application includes a zoned tensioning mechanism 100 and a power mechanism 200; the zoned tensioning mechanism 100 includes a mounting body, and a plurality of push rod tensioning shoe assemblies 110 connected to the mounting body, the plurality of push rod tensioning shoe assemblies 110 are arranged in pairs along the circumferential direction of the mounting body, and each pair of push rod tensioning shoe assemblies 110 are arranged along the axial direction of the mounting body; the power mechanism 200 is respectively connected to the plurality of push rod tensioning shoe assemblies 110, and is configured to drive at least one push rod tensioning shoe assembly 110 to perform telescopic action each time.

[0057] The axial direction of the installation body is perpendicular to the circumferential direction of the installation body. When the pipeline welding machine partition tensioning device is installed in the pipeline, the axial direction of the installation body is generally the same as the axial direction of the pipeline, and the circumferential direction of the installation body is generally the same as the circumferential direction of the pipeline.

[0058] In the zoned tensioning device for the in-pipe welding machine provided in the embodiment of the present application, the multiple push rod expansion shoe assemblies 110 in the zoned tensioning mechanism 100 are arranged in pairs along the circumferential direction of the installation body, and each pair of push rod expansion shoe assemblies 110 are arranged along the axial direction of the installation body. Therefore, in the pipeline welding scenario, the multiple push rod expansion shoe assemblies 110 of the zoned tensioning mechanism 100 are divided into two groups along the axial direction and are respectively arranged at the pipe openings of two pipes, wherein each group of push rod expansion shoe assemblies 110 abuts against different parts of a pipe in the circumferential direction, and the two paired push rod expansion shoe assemblies 110 abut against each other. It is connected to the same part of the pipe openings of the two pipes, so as to facilitate the zoned tightening of each pipe; the power mechanism 200 can drive the mandrel expansion shoe assembly 110 to perform telescopic movement. When applied, the power mechanism 200 can be used to drive all the mandrel expansion shoe assemblies 110 to tighten and position the pipes. After that, if there is still misalignment between some parts of the pipe openings of the two pipes, the misalignment between the two pipe openings can be flexibly adjusted by controlling the extension and contraction of at least one mandrel expansion shoe assembly 110 abutting against the pipe openings of the part, so that the pipe openings of the two pipes correspond to each other and meet the welding process requirements. Therefore, when the pipe openings are matched by using the zoned tightening device of the pipeline welding machine provided by the present application, the efficiency of the pipe opening matching can be improved without rotating the pipe, repeatedly tightening and positioning, and repeatedly measuring the misalignment between the two pipe openings, saving manpower and time, and helping to improve the construction efficiency of automatic pipeline welding.

[0059] In some embodiments, the power mechanism 200 may include a hydraulic cylinder 230 and a hydraulic power station 240 , and the hydraulic cylinder 230 is supplied with oil through the hydraulic power station 240 to provide power, thereby driving the push rod expansion shoe assembly 110 to perform telescopic movement.

[0060] When there are multiple hydraulic cylinders 230, optionally, the zoned tensioning device for the in-pipe welding machine may further include a hydraulic manifold assembly 250, which is respectively connected to the oil return circuits of the multiple hydraulic cylinders 230 and connected to the hydraulic power station 240. The hydraulic manifold assembly 250 is used to recover and gather the pressure oil of the multiple hydraulic cylinders 230, and deliver it to the hydraulic power station 240, so as to realize the circulation of the pressure oil in the power mechanism 200.

[0061] In some embodiments, the hydraulic cylinder 230 can work under a pressure of 14 MPa, each hydraulic cylinder 230 provides a thrust of 7 tons, and each push rod expansion shoe assembly 110 can generate a tensioning force of 10 tons acting on the inner wall of the pipe, causing the inner wall of the pipe to produce elastic deformation.

[0062] Optionally, eighteen mandrel shoe assemblies 110 are arranged in the annular direction of the installation body, and three mandrel shoe assemblies 110 are used as a group, and a total of six groups are divided into six groups, so that the inner wall of the pipeline is divided into six partitions in the annular direction. In some working scenarios, when the misalignment between the pipe openings of two pipelines is required to be low, the power mechanism 200 can be configured to drive at least three mandrel shoe assemblies 110 adjacent in the annular direction to perform telescopic movement each time. In other words, when the internal welding machine uses the partition tensioning device to assemble the pipe openings, multiple mandrel shoe assemblies 110 in at least one partition can be controlled each time to adjust the misalignment of the pipe openings.

[0063] It should be noted that, in the embodiment of the present application, the number of push rod expansion shoe assemblies 110 and the number of push rod expansion shoe assemblies 110 driven by the power mechanism 200 each time can be adjusted by the operator according to actual welding requirements before performing actual welding operations.

[0064] Optionally, the number of power mechanisms 200 in the present application may be the same as the number of push rod shoe assemblies 110, that is, each push rod shoe assemblies 110 is driven by a power mechanism 200. Alternatively, more than one push rod shoe assemblies 110 may be controlled by one power mechanism 200, for example, one power mechanism 200 simultaneously controls multiple push rod shoe assemblies 110 in one partition. Alternatively, all push rod shoe assemblies 110 may be controlled by one power mechanism 200, but the power mechanism 200 may send control instructions to each push rod shoe assemblies 110 separately.

[0065] It should be noted that although the push rod expansion shoe assemblies 110 in the embodiment of the present application are arranged in pairs, the telescopic action of the two push rod expansion shoe assemblies 110 in each pair of push rod expansion shoe assemblies 110 can be performed simultaneously, and can also be driven separately by the corresponding connected power mechanism 200.

[0066] Optionally, the welding process requirement of the in-pipe welding machine is that the misalignment of the pipe is between 0 and 1.5 mm.

[0067] like Figure 2 As shown, in some embodiments of the present application, the installation body includes: a central flange shaft assembly 120 and a connecting assembly 130; the connecting assembly 130 is located in the radial direction of the central flange shaft assembly 120 and is connected to the central flange shaft assembly 120; the connecting assembly 130 is connected to the push rod expansion shoe assembly 110.

[0068] In the embodiment of the present application, the central flange shaft assembly 120 can play the role of installation and support, and other components in the partition tensioning device are directly or indirectly installed on the central flange shaft assembly 120. Optionally, the central flange shaft assembly 120 is located in the central part of the partition tensioning device, and other components in the device are installed around the central flange shaft assembly 120. Among them, the connecting assembly 130 is arranged along the radial direction of the central flange shaft assembly 120 and connected to the central flange shaft assembly 120, and is used to connect multiple push rod expansion shoe assemblies 110 and the central flange shaft assembly 120.

[0069] In some embodiments of the present application, Figure 3 As shown, the center flange shaft assembly 120 includes: a center flange shaft 121, two first flanges 122, two second flanges 123 and two support plates 124; the two first flanges 122 are fixed on the outer wall of the center flange shaft 121, and are respectively arranged close to the two axial ends of the center flange shaft 121; the two second flanges 123 are fixed on the outer wall of the center flange shaft 121 at intervals, and are located between the two first flanges 122; the two support plates 124 are respectively connected to the sides of the two second flanges 123 away from each other.

[0070] The center flange shaft assembly 120 may include a center flange shaft 121, and a first flange 122, a second flange 123 and a support plate 124 respectively fixed on the center flange shaft 121. For example, the first flange 122, the second flange 123 and the support plate 124 may be fixedly connected to the center flange shaft 121 by welding. The two first flanges 122 are close to the two axial ends of the center flange shaft 121 and are fixed to the outer wall of the center flange shaft 121. The two second flanges 123 may be fixedly connected to the two support plates 124 by connecting screws. The two second flanges 123 are then connected as a whole by connecting screws and the above-mentioned connecting assembly 130 and the intermediate fixed plate 160 of the internal welding machine, which is used to fix the partition tensioning mechanism 100 and bear the action and reaction force of the power mechanism 200.

[0071] It should be noted that, in the embodiment of the present application, “the two first flanges 122 are respectively arranged close to the two axial ends of the center flange shaft 121” means that compared with other components in the center flange shaft assembly 120 except the center flange shaft 121, the two first flanges 122 are each located at the position closest to the two axial ends of the center flange shaft 121.

[0072] Optionally, the center flange shaft assembly 120 is a plane-symmetrical structure, and its symmetry plane passes through the center of the center flange shaft 121 and is perpendicular to the axis of the center flange shaft 121, so as to more accurately adjust the misalignment of the pipe openings on both sides.

[0073] like Figure 4 As shown, in some embodiments of the present application, the connecting assembly 130 includes: a connecting rod member 131 and a tensioning base 132; the connecting rod member 131 is passed through the two support disks 124 and is fixedly connected to the two support disks 124; the tensioning base 132 is located between the two support disks 124 and is fixedly connected to the connecting rod member 131, wherein a plug-in hole is penetrated through the tensioning base 132, and the axial direction of the plug-in hole is parallel to the radial direction of the center flange shaft assembly 120; a push rod tensioning shoe assembly 110 is inserted into the plug-in hole, and the push rod tensioning shoe assembly 110 can move along the axial direction of the plug-in hole.

[0074] Corresponding to a pair of push rod expansion shoe assemblies 110 arranged along the axial direction of the installation body, the number of tensioning bases 132 used to install the pair of push rod expansion shoe assemblies can also be two, and the two tensioning bases 132 are arranged along the axial direction of the installation body and are respectively connected to the central flange shaft assembly 120 and the push rod expansion shoe assembly 110. The tensioning base 132 can be provided with a plug hole, and the push rod expansion shoe assembly 110 is inserted into the tensioning base 132 through the plug hole, and can reciprocate along the extension direction of the plug hole under the drive of the power assembly 210 to achieve telescoping, thereby adjusting the misalignment between two adjacent pipe openings. The connecting rod 131 can pass through a tensioning base 132, a support plate 124, another support plate 124 and another tensioning base 132 in sequence, and then be locked and fixed with a nut, so that the partition tensioning mechanism 100 is connected into an integral structure to support other components in the partition tensioning mechanism 100.

[0075] Optionally, the partition tensioning device may further include a rotating assembly 170, which is sleeved on the outside of the center flange shaft 121 and located between the two tensioning bases 132; a bearing assembly is arranged between the rotating assembly 170 and the middle fixed disk 160 of the internal welding machine, and the rotating assembly 170 is connected to the bearing assembly, so that the rotating assembly 170 can rotate around the axis of the installation body, wherein a plurality of welding assemblies are arranged on the periphery of the rotating assembly 170, which can complete the tensioning positioning at the two pipe openings, and perform the rotary welding operation on the basis that the misalignment amount meets the set conditions.

[0076] It should be noted that the connecting rod may be a connecting screw or other component that can realize the connection function, and the technicians may select it according to actual needs.

[0077] like Figure 5As shown, in some embodiments of the present application, the power mechanism 200 includes: a power component 210 and a reversing transmission component 220; the power component 210 is connected to the reversing transmission component 220, and is used to drive the reversing transmission component 220 to move axially along the center flange shaft component 120; the push rod expansion shoe assembly 110 cooperates with the reversing transmission component 220, and can move radially along the center flange shaft component 120 under the actuation of the reversing transmission component 220.

[0078] In order to save the radial arrangement space of the partition tensioner in the center flange shaft assembly 120 and to avoid affecting the telescopic movement of the push rod expansion shoe assembly 110, the power assembly 210 and the push rod expansion shoe assembly 110 can be arranged in sequence along the axial direction of the center flange shaft assembly 120. The power assembly 210 can reciprocate along the axial direction of the center flange shaft assembly 120.

[0079] Since the movement directions of the power assembly 210 and the push rod shoe assembly 110 are perpendicular to each other, a reversing transmission assembly 220 is additionally provided to convert the axial movement of the power assembly 210 along the installation body into radial movement along the installation body, thereby converting the control of the telescopic distance of the push rod shoe assembly 110 into the control of the axial movement distance of the power assembly 210. Specifically, when it is necessary to adjust the misalignment of the pipe mouth, the power assembly 210 can be controlled to apply an axial thrust to the reversing transmission assembly 220, and then the thrust is transmitted to the push rod shoe assembly 110 by the reversing transmission assembly 220, so that the push rod shoe assembly 110 provides the required tightening force to the inner wall of the pipe, and the misalignment of the pipe mouth can be accurately adjusted by controlling the moving distance of the power assembly 210 and the magnitude of the thrust.

[0080] Optionally, the power component 210 may be a hydraulic cylinder 230 , a pneumatic cylinder, an electric cylinder or other components that can realize a driving function.

[0081] In some embodiments of the present application, Figure 6 As shown, the reversing transmission assembly 220 includes: a push plate member 221 and a bevel member 222; the push plate member 221 is connected to the bevel member 222, and the side of the push plate member 221 away from the bevel member 222 is connected to the power assembly 210; the bevel member 222 is located in the retraction direction of the push rod shoe assembly 110, and the bevel member 222 has an inclined surface 2221, and the push rod shoe assembly 110 can move on the inclined surface 2221, wherein the inclined surface 2221 is configured as: the closer to the axis of the center flange shaft assembly 120, the farther away from the other push rod shoe assembly 110 that is paired with the push rod shoe assembly 110.

[0082] The push plate member 221 and the inclined block member 222 are fixedly connected. For example, a mounting hole is provided on the push plate member 221, and the inclined block member 222 can be inserted into the mounting hole by interference fit to achieve connection with the push plate member 221; the side of the push plate member 221 away from the inclined block member 222 can be connected to the power assembly 210, so that the power assembly 210 can drive the push plate member 221 to move axially along the central flange shaft 121; as the push plate member 221 moves, the inclined surface 2221 of the inclined block member 222 cooperates with the push rod expansion shoe assembly 110 to convert the axial thrust into the radial thrust, wherein the push rod expansion shoe assembly 110 can be moved in the radial direction of the installation body toward the central flange shaft assembly 120, which is regarded as the retraction of the push rod expansion shoe assembly 110; correspondingly, the push rod expansion shoe assembly 110 can be moved in the radial direction of the installation body toward the direction away from the central flange shaft assembly 120, which is regarded as the extension of the push rod expansion shoe assembly 110.

[0083] Optionally, each push plate member 221 may be provided with a plurality of mounting holes, and a plurality of inclined block members 222 are respectively inserted into the plurality of mounting holes to achieve connection with the push plate member 221, wherein each inclined block member 222 is interference fit with the corresponding mounting hole, and is used to bear the force transmitted by the push rod expansion shoe assembly 110 and the power assembly 210, and the inclined surfaces 2221 of the plurality of inclined block members 222 are respectively matched with the plurality of push rod expansion shoe assemblies 110 to realize the reversing transmission function: the axial thrust and movement of the power assembly 210 along the center flange shaft assembly 120 are converted into radial movement and tensioning force along the center flange shaft assembly 120 through the inclined surfaces 2221 of the inclined block members 222.

[0084] like Figure 7 As shown, in some embodiments of the present application, the partitioned tensioning mechanism 100 also includes: a fixed component 140 and a guide shaft component 150; the fixed component 140 is connected to the first flange 122, and the power component 210 is installed on the fixed component 140; the guide shaft component 150 is sequentially inserted into the fixed component 140, the push plate member 221 and the support plate 124, wherein the guide shaft component 150 is fixedly connected to the fixed component 140 and the support plate 124 respectively, and the guide shaft component 150 is movably connected to the push plate member 221, and the moving direction of the push plate member 221 is limited to be along the axial direction of the guide shaft.

[0085] The power assembly 210 is mounted on the fixing assembly 140, the fixing assembly 140 is fixedly connected to the center flange shaft assembly 120, and the guide shaft assembly 150 is mounted between the fixing assembly 140 and the support plate 124, and is fixedly connected to the two respectively; the push plate member 221 is provided with an axial hole, and the guide shaft assembly 150 passes through the axial hole, so that the movable range of the push plate member 221 is limited between the fixing assembly 140 and the support plate 124, and the moving direction of the push plate member 221 is limited to the extension direction of the guide shaft assembly 150. Optionally, the extension direction of the guide shaft assembly 150 is parallel to the axial direction of the axial hole provided on the push plate member 221, and is parallel to the axial direction of the center flange shaft assembly 120.

[0086] Optionally, the guide shaft assembly 150 includes a plurality of guide shafts, which are all arranged along the axial direction of the central flange shaft assembly 120; a plurality of shaft holes are arranged at intervals on the push plate member 221, and the plurality of guide shafts are respectively passed through the plurality of shaft holes. The plurality of guide shafts are used to limit the movement of the push plate member 221 to only movement, but not rotation.

[0087] Optionally, a plurality of axial holes formed on the push plate member 221 are distributed on two opposite sides of the inclined block member 222 .

[0088] In the embodiment of the present application, the cooperation mode between the push rod expansion shoe assembly 110 and the inclined surface 2221 includes but is not limited to: sliding cooperation and rolling cooperation.

[0089] In some embodiments, the push rod shoe assembly 110 is slidably matched with the inclined surface 2221. Optionally, the end of the push rod shoe assembly 110 for slidingly matching with the inclined surface 2221 has an inclined surface, and the inclined direction of the inclined surface is the same as the inclined direction of the inclined surface 2221 of the inclined block 222. When the push rod shoe assembly 110 is slidably matched with the inclined surface 2221, the inclined surface of the push rod shoe assembly 110 is in contact with the inclined surface 2221 of the inclined block 222.

[0090] In other embodiments, the push rod expansion shoe assembly 110 is in rolling cooperation with the inclined surface 2221. Figure 8 As shown, the push rod expansion shoe assembly 110 includes: an expansion shoe 111, a push rod 112, a roller bracket 113, a roller 114 and a connecting pin 115; the expansion shoe 111 and the roller bracket 113 are respectively connected to the two ends of the push rod 112; the roller 114 is rotatably connected to the roller bracket 113 through the connecting pin 115, and the roller 114 can roll on the inclined surface 2221.

[0091] See also Figure 8, the push rod 112 of the push rod shoe assembly 110 can pass through the plug hole on the tensioning base 132, so that the shoe 111 and the roller 114 extend from the opposite sides of the tensioning base 132 respectively, and the roller 114 can roll with the inclined surface 2221. Optionally, the plug hole of the tensioning base 132 can be a stepped hole, and the stepped hole includes a large-aperture sub-hole and a small-aperture sub-hole, wherein the large-aperture sub-hole is closer to the central flange axis 121 than the small-aperture sub-hole; the push rod shoe assembly 110 also includes an elastic member, such as a compression spring, which is located in the large-aperture sub-hole, and one end of the compression spring abuts against the step surface of the step, and the other end abuts against the roller bracket 113, which is used to apply elastic force to the roller bracket 113 based on its own elastic deformation after the power mechanism 200 withdraws the force, so as to retract the push rod shoe assembly 110.

[0092] In some embodiments of the present application, Fig. 9 As shown, the partition tensioning device for the pipeline welding machine provided in the present application also includes: an induction control mechanism 300; the induction control mechanism 300 is configured to control the power mechanism 200 to drive at least one of a pair of push rod expansion shoe assemblies 110 to perform a telescopic action when it is detected that the misalignment of the pipe mouths of the pipeline partition corresponding to any pair of push rod expansion shoe assemblies 110 meets the set conditions.

[0093] The setting conditions can be created and adjusted by the technician according to the actual welding requirements. In some embodiments, as described above, when performing the in-pipe welding process, the misalignment between the pipe openings of two adjacent pipes is required to be adjusted to between 0 and 1.5 mm, so the setting conditions can be determined as: the misalignment of the pipe openings is not greater than 1.5 mm.

[0094] The sensing control mechanism 300 can measure the misalignment of the pipe orifices between the pipe orifices of two adjacent pipes. Optionally, the sensing control mechanism 300 can measure the misalignment of the pipe orifices of two adjacent pipes in each pipe partition. When the misalignment of the pipe orifices of the pipe partition corresponding to any pair of push rod expansion shoe assemblies 110 detected by the sensing control mechanism 300 is not between 0 and 1.5 mm, at least one power mechanism 200 corresponding to the partition is controlled to extend and retract, thereby driving the push rod expansion shoe assembly 110 corresponding to the partition to perform a telescopic movement, so that a part of the pipe orifice located in the pipe partition produces elastic deformation. Repeat the above process, and the misalignment of the pipe orifices of each pipe partition of two adjacent pipes is less than or equal to 1.5 mm.

[0095] like Fig.10As shown, optionally, the sensing control mechanism 300 may also include a control module 310 and multiple sensor modules 320; the control module 310 is signal-connected to the multiple sensor modules 320 respectively, and is signal-connected to the power mechanism 200; the multiple sensor modules 320 are respectively installed at the same position on the multiple push rod expansion shoe assemblies 110, each sensor module 320 is used to detect the pipeline distance information between the sensor module 320 and the inner wall of the target pipeline, and the inner wall of the target pipeline is the inner wall of the pipeline partition where the push rod expansion shoe assembly 110 with the sensor module 320 installed is located; wherein the control module 310 is used to compare the two sets of pipeline distance information fed back by the two sensor modules 320 installed on a pair of push rod expansion shoe assemblies 110, and determine the pipe mouth misalignment amount according to the two sets of pipeline distance information, when the pipe mouth misalignment amount is greater than the set threshold value, the control power mechanism 200 drives at least one of the pair of push rod expansion shoe assemblies 110 to perform telescopic action.

[0096] Exemplarily, multiple sensor modules 320 can be fixed on the partition tensioning mechanism 100 by screws and installed at the same position of multiple mandrel shoe assemblies 110. Like the mandrel shoe assemblies 110, multiple sensor modules 320 are also arranged in pairs. Each sensor module 320 can be used to detect the distance between the position where the sensor module 320 is located and the inner wall of the pipe partition of the target pipe abutted by the mandrel shoe assemblies 110 connected thereto, and generate pipe distance information according to the measurement data and send it to the control module 310. After receiving the pipeline distance information, the control module 310 can calculate the pipe mouth misalignment corresponding to the pipeline partition based on the measurement data fed back by each pair of sensor modules 320; if it is detected that the difference in measurement data of a pair of sensor modules 320 is greater than a set threshold, i.e., 1.5 mm, the control module can control the power mechanism 200 (e.g., a hydraulic cylinder) corresponding to the pipeline partition where the pair of sensor modules 320 are located to extend and retract the piston rod to drive the push rod expansion shoe assembly 110 to move, thereby adjusting the pipe mouth misalignment of the pipeline partition, until the pipe mouth misalignment of each pipeline partition obtained based on the measurement data of each pair of sensor modules 320 is between 0 and 1.5 mm.

[0097] Optionally, the sensor module 320 may be a laser distance sensor, an infrared distance sensor or other sensors that can detect distance.

[0098] It should be noted that each set of pipeline distance information includes at least one distance measurement data. Among them, each pair of sensor modules 220 can measure the pipeline distance information multiple times and obtain multiple measurement data. In this case, each set of pipeline distance information can include multiple measurement data. The control module 310 can filter the multiple measurement data in each set of pipeline distance information, and after eliminating the abnormal measurement data, use the average value of the remaining measurement data to calculate the pipe mouth misalignment amount.

[0099] An embodiment of the present application further provides an in-pipeline welder, which may include the in-pipeline welder zone tensioning device described in any of the above embodiments.

[0100] The pipeline internal welding machine provided in the embodiment of the present application adopts the above-mentioned zoned tensioning device. Since there is no need to rotate the pipeline, repeatedly tighten and position, and repeatedly measure the misalignment between the two pipe openings when assembling the pipe openings, manpower and time are saved, the efficiency of pipe opening assembly is improved, and thus the construction efficiency of pipeline internal welding is also improved.

[0101] The in-pipeline welder provided in the embodiment of the present application also includes a welding device, which is used to perform in-pipeline welding operations under control.

[0102] Optionally, the in-pipe welder provided in the embodiment of the present application may further include a moving device, which is used to drive the in-pipe welder to move. For example, after the in-pipe welder completes the pipe orifice welding operation of a pair of pipes, the moving device can be controlled to move along the axial direction of the pipe to the next pipe orifice to be welded to continue the welding operation.

[0103] For example, see Fig.10 The working process of a pipeline welding machine provided in an embodiment of the present application is described as follows:

[0104] (1) The construction personnel first place the internal welding machine with the partition tensioning device to the pipe mouth of a pipe through the lifting tool. The following steps take the pipe located on the left side of the partition tensioning device as an example.

[0105] (2) Start the hydraulic power station 240 in the power mechanism 200, so that the piston rods of all the hydraulic cylinders 230 on the left side of the partition tensioning device are extended at the same time, driving the corresponding push plate member 221 to move to the right, and the inclined block member 222 pushes the roller 114 to rotate and move along the radial direction of the pipeline, thereby driving the corresponding push rod 112 and the tensioning shoe 111 to move along the radial direction of the pipeline and extend from the tensioning base 132 to abut against the inner wall of the corresponding pipeline partition of the root pipe, thereby completing the tensioning of the left pipeline.

[0106] (3) Insert another pipe from the right side of the internal welding machine so that the pipe openings of the two pipes are aligned and fit together.

[0107] (4) Start the hydraulic power station 240, so that the piston rods of all the hydraulic cylinders 230 on the right side of the partition tensioning device are extended at the same time, driving the corresponding push plate member 221 to move to the left, and the inclined block member 222 pushes the roller 114 to rotate and move along the radial direction of the pipe, thereby driving the corresponding push rod 112 and the tensioning shoe 111 to move along the radial direction of the pipe and extend from the tensioning base 132 to abut against the inner wall of the corresponding pipe partition of the root pipe, thereby completing the tensioning of the right pipe.

[0108] (5) The laser distance sensor measures the distance between the location of the sensor and the inner wall of the pipeline, and sends it to the control module 310; the control module 310 compares the measurement data of each pair of laser distance sensors, and calculates the misalignment of the pipe openings of each pipeline partition. If the misalignment of the pipe opening of any pipeline partition is greater than 1.5 mm, the control module 310 starts the corresponding hydraulic cylinder 230 to extend or retract the piston rod to adjust the extension amount of the corresponding expansion shoe 111 from the plug hole of the tensioning base 132, so that the elastic deformation amount of the pipe opening of the pipeline partition changes under the action of the adjusted tensioning force, and then the misalignment of the pipe opening of the pipeline partition is adjusted until the misalignment of the pipe opening of each pipeline partition is less than or equal to 1.5 mm, so as to meet the welding process requirements in the pipeline.

[0109] (6) After determining that the misalignment between the pipe openings of each pipe partition of the two pipes meets the requirements of the in-pipe welding process, the welding device is controlled to start the welding program and perform the in-pipe welding operation.

[0110] (7) After the welding of the current pipe opening is completed, the moving device is controlled to move along the axial direction of the pipeline to the next pipe opening to be welded, and the above steps (2) to (6) are repeated until the welding work of all the pipe openings to be welded is completed.

[0111] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0112] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0113] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A zone tensioning device for a pipeline welding machine, characterized in that: The device comprises: a partitioned tensioning mechanism (100) and a power mechanism (200); The partitioned tensioning mechanism (100) comprises a mounting body, and a plurality of push rod expansion shoe assemblies (110) connected to the mounting body, wherein the plurality of push rod expansion shoe assemblies (110) are arranged in pairs along the circumferential direction of the mounting body, and each pair of the push rod expansion shoe assemblies (110) are arranged along the axial direction of the mounting body; The power mechanism (200) is respectively connected to the plurality of push rod expansion shoe assemblies (110), and is configured to drive at least one of the push rod expansion shoe assemblies (110) to perform a telescopic action each time.

2. The zone tensioning device for pipeline welding machine according to claim 1 is characterized in that: The installation body comprises: a central flange shaft assembly (120) and a connection assembly (130); The connecting assembly (130) is located in the radial direction of the central flange shaft assembly (120) and is connected to the central flange shaft assembly (120); The connecting assembly (130) is connected to the push rod expansion shoe assembly (110).

3. The zone tensioning device for pipeline welding machine according to claim 2 is characterized in that: The central flange shaft assembly (120) comprises: a central flange shaft (121), two first flange plates (122), two second flange plates (123) and two support plates (124); The two first flanges (122) are fixed on the outer wall of the central flange shaft (121), and are respectively arranged close to two ends of the central flange shaft (121) in the axial direction; The two second flanges (123) are fixed at intervals on the outer wall of the central flange shaft (121) and are located between the two first flanges (122); The two support plates (124) are respectively connected to the sides of the two second flange plates (123) that are away from each other.

4. The zone tensioning device for pipeline welding machine according to claim 3 is characterized in that: The connection assembly (130) comprises: a connecting rod (131) and a tensioning base (132); The connecting rod (131) passes through the two supporting plates (124) and is fixedly connected to the two supporting plates (124); The tensioning base (132) is located between the two support plates (124) and is fixedly connected to the connecting rod (131), wherein a plug hole is formed through the tensioning base (132), and the axial direction of the plug hole is parallel to the radial direction of the central flange shaft assembly (120); A push rod expansion shoe assembly (110) is inserted into the insertion hole, and the push rod expansion shoe assembly (110) can move along the axial direction of the insertion hole.

5. The zone tensioning device for pipeline welding machine according to claim 3 is characterized in that: The power mechanism (200) comprises: a power assembly (210) and a reversing transmission assembly (220); The power assembly (210) is connected to the reversing transmission assembly (220) and is used to drive the reversing transmission assembly (220) to move along the axial direction of the central flange shaft assembly (120); The push rod expansion shoe assembly (110) cooperates with the reversing transmission assembly (220) and can move along the radial direction of the central flange shaft assembly (120) under the actuation of the reversing transmission assembly (220).

6. The zone tensioning device for pipeline welding machine according to claim 5, characterized in that: The reversing transmission assembly (220) comprises: a push plate component (221) and a ramp component (222); The push plate member (221) is connected to the inclined block member (222), and a side of the push plate member (221) away from the inclined block member (222) is connected to the power assembly (210); The inclined block (222) is located in the retraction direction of the push rod expansion shoe assembly (110), and the inclined block (222) has an inclined surface (2221), and the push rod expansion shoe assembly (110) can move on the inclined surface (2221), wherein the inclined surface (2221) is configured as follows: the closer it is to the axis of the central flange shaft assembly (120), the farther it is from another push rod expansion shoe assembly (110) that is arranged in a pair with the push rod expansion shoe assembly (110).

7. The zone tensioning device for a pipeline welding machine according to claim 6, characterized in that: The partitioned tensioning mechanism (100) further comprises: a fixing assembly (140) and a guide shaft assembly (150); The fixing assembly (140) is connected to the first flange (122), and the power assembly (210) is installed on the fixing assembly (140); The guide shaft assembly (150) is sequentially inserted into the fixed assembly (140), the push plate member (221) and the support plate (124), wherein the guide shaft assembly (150) is fixedly connected to the fixed assembly (140) and the support plate (124) respectively, and the guide shaft assembly (150) is movably connected to the push plate member (221), and the moving direction of the push plate member (221) is limited to be along the axial direction of the guide shaft.

8. The zone tensioning device for a pipeline welding machine according to claim 6, characterized in that: The push rod expansion shoe assembly (110) comprises: an expansion shoe (111), a push rod (112), a roller bracket (113), a roller (114) and a connecting pin (115); The expansion shoe (111) and the roller bracket (113) are respectively connected to two ends of the push rod (112); The roller (114) is rotatably connected to the roller bracket (113) via the connecting pin (115), and the roller (114) can roll on the inclined surface (2221).

9. The zone tensioning device for a pipeline welding machine according to any one of claims 1 to 8, characterized in that: The device further comprises: an induction control mechanism (300); The sensing control mechanism (300) is configured to control the power mechanism (200) to drive at least one of the pair of push rod expansion assemblies (110) to perform a telescopic action when it is detected that the misalignment of the pipe openings of the pipeline partition corresponding to any pair of push rod expansion assemblies (110) meets a set condition.

10. A pipeline internal welding machine, characterized in that: The in-pipeline welding machine comprises the in-pipeline welding machine zone tensioning device as described in any one of claims 1-9.

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