Auxiliary positioning tool for heat pipe welding

Abstract

The present application relates to heat pipeline installation technical field, especially to a kind of auxiliary positioning tool for heat pipeline welding, including two groups of installation units, each group of installation units includes installation module one and installation module two, installation module one includes two clamping components one;Installation module two includes two clamping components two;Two clamping components one and two clamping components two are connected by connecting component one and connecting component two respectively, clamping component one and the upper portion of corresponding clamping component two are connected fastening by tensioning component;Connecting component one includes two telescopic cylinders one, connecting component two includes two telescopic cylinders two, two telescopic cylinders one or telescopic cylinder two are oppositely arranged and rotationally connected, the upper portion of middle portion of connecting component one and connecting component two is rotationally provided with docking component one and docking component two respectively;The docking component one and docking component two in two groups of adjacent installation units are detachably connected by locking member;The present application is suitable for the docking condition of straight pipe and a variety of different central angle elbow pipe, and installation speed is faster.

Description

Technical Field

[0001] This invention relates to the field of heating pipeline installation technology, and in particular to an auxiliary positioning tool for welding heating pipelines. Background Technology

[0002] Heating pipelines are systems used to transport heat energy media, such as hot water or steam. They are mainly used in residential, commercial buildings, and industrial facilities to provide heating and hot water. Heating pipeline installation is mainly divided into two categories: above-ground laying and underground laying. Underground laying includes direct burial and trench laying. At the installation site, multiple sections of heating pipeline are laid in pre-dug trenches. The heating pipeline includes straight sections and bends. Generally, segmented jointing is used; one section of pipeline is fixed first, then the adjacent section is fixed. Welding is then performed after the adjacent sections of heating pipeline are positioned and joined. When connecting straight and curved pipes, it is necessary to ensure that the axes of the two pipes are aligned and the angles are accurate at the joint ends. However, existing technologies used to assist in connecting straight and curved pipes generally involve using hoisting equipment to move the pipes to be connected into the trench, requiring multiple workers to manually move and adjust the connection, which may require multiple adjustments and is inefficient. Some existing auxiliary positioning fixtures are only suitable for welding straight pipes, which has low adaptability. Moreover, in complex environments, the central angle of each curved pipe may be different to adapt to the trench terrain, requiring multiple additional adjustments to the pipe angle, making the angle calibration process complicated. Summary of the Invention

[0003] The purpose of this invention is to provide an auxiliary positioning fixture for welding thermal pipelines, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An auxiliary positioning fixture for welding thermal pipelines includes two sets of installation units. Each set of installation units includes an installation module one and an installation module two. Installation module one includes a clamping component one, a connecting component one, and a docking component one. Installation module two includes a clamping component two, a connecting component two, and a docking component two. Two sets of clamping components one and two are arranged at intervals. Two sets of clamping components one and two are connected by connecting components one and two, respectively. The upper parts of clamping components one and the corresponding clamping components two are connected by tensioning components. The clamping assembly 1 includes an abutment plate 1, and the clamping assembly 2 includes an abutment plate 2. The abutment plate 1 and the abutment plate 2 cooperate to clamp the installed pipe or the pipe to be installed. The connecting assembly 1 includes two telescopic cylinders 1, which are arranged opposite to each other and rotatably connected. The connecting assembly 2 includes two telescopic cylinders 2, which are arranged opposite to each other and rotatably connected. The connecting assembly 1 and the connecting assembly 2 are respectively rotatably arranged above the middle of the connecting assembly 1 and the connecting assembly 2. The connecting assembly 1 and the connecting assembly 2 in the two adjacent installation units are detachably connected by locking components.

[0006] Preferably, the locking component includes a mating head and a coupling head. The mating head is connected to the end of a first or second mating component on one set of mounting units, and the coupling head is connected to the end of a first or second mating component on another set of mounting units. The mating head and the coupling head are detachably connected.

[0007] Preferably, the clamping component 2 and the clamping component 1 are symmetrically arranged within the same set of installation units. The clamping component 1 includes a mounting part 1 with a through groove 1 on its upper part, and the clamping component 2 includes a mounting part 2 with a through groove 2 on its upper part.

[0008] Preferably, the first docking component includes a first connecting cylinder, and the second docking component includes a second connecting cylinder. The telescopic ends of the first connecting cylinder and the second connecting cylinder are connected to a mating head or a fitting head. The telescopic end of the first connecting cylinder passes through a through groove, and the telescopic end of the second connecting cylinder passes through a through groove. The mating head and the fitting head are inserted and fastened.

[0009] Preferably, the middle part of the clamping assembly one is connected to a connecting rod one via a screw and nut structure, and the connecting rod one is rotatably connected to the abutment plate one. The middle part of the clamping assembly two is connected to a connecting rod two via a screw and nut structure, and the connecting rod two is rotatably connected to the abutment plate two. The abutment plate one and the abutment plate two cooperate to clamp the installed tube or the tube to be installed.

[0010] Preferably, the tensioning assembly includes a connecting sleeve and a connecting rod, which are slidably connected. The connecting sleeve is fixedly disposed on the upper part of the side of the mounting component one or the mounting component two facing the pipe, and the connecting rod is fixedly disposed on the upper part of the opposite side of the corresponding mounting component two or the mounting component one. A sliding groove is provided through the side of the connecting sleeve, and a connecting bolt is provided at the end of the connecting rod that connects to the connecting sleeve and is tightened by a nut.

[0011] Preferably, the first connecting assembly further includes a first connecting head and a first rotating head; the first connecting head and the first rotating head are rotatably connected, and the first connecting head is connected to the first docking assembly via a gear meshing structure; the first connecting head and the first rotating head are respectively fixedly connected to the telescopic end of the first telescopic cylinder.

[0012] Preferably, the second connecting component further includes a second connecting head and a second rotating head. The second connecting head is connected to the second docking component via a gear meshing structure. The second connecting head and the second rotating head are respectively fixedly connected to the telescopic end of the second telescopic cylinder.

[0013] Preferably, the mounting component has threaded connectors at both ends of its lower part, universal wheels at the four corners of its bottom, and a fixed plate at one side of the mounting component is fixedly connected to the fixed end of the telescopic cylinder. The structure and connection method of the second mounting component are the same as those of the first mounting component.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention provides an auxiliary positioning fixture for welding thermal pipelines, comprising multiple installation units. Each installation unit includes an installation module one and an installation module two. Installation module one includes two clamping components one, and installation module two includes two clamping components two symmetrically arranged with the clamping components one. Clamping components one includes an abutment plate one, and clamping components two include an abutment plate two. The abutment plates one and two cooperate to clamp the installed pipe or the pipe to be installed, which is applicable to clamping straight pipes or bends of various diameters for pipe butt joint operations. The two clamping components one and two are connected by connecting components one and two, respectively. Taking connecting component one as an example, connecting component one also includes a connecting head one and a rotating head one. Connecting head one and rotating head one are rotatably connected, and connecting head one and rotating head one are respectively connected to the two clamping components one by telescopic cylinder one. The angle between the two telescopic cylinders one is adjustable, making this installation unit applicable to various bends, each bend having a different corresponding central angle, thus having strong applicability.

[0016] This invention provides an auxiliary positioning fixture for welding thermal pipelines. In two adjacent installation units, docking components one and two are detachably connected via locking components. A docking component one is rotatably mounted above a connector one. A clamping component one includes an installation part one with a through-groove on its upper part. The locking component includes a mating head and a fitting head. The mating head and fitting head are inserted and fastened. The mating head or fitting head can be extended by the telescopic end of a connecting cylinder one and pass through the through-groove one. Installation modules one in the two adjacent installation units respectively use a mating head and a fitting head. The docking component one is rotatably mounted so that the mating head or fitting head, after adjustment, passes through the corresponding installation part one and can be connected and fixed with the adjusting fitting head or mating head in the installation unit on the next section of pipe to be installed, reducing some disassembly and installation steps of this auxiliary positioning fixture. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the auxiliary positioning tool for welding thermal pipelines according to an embodiment of the present invention, used to connect an installed pipeline and a pipe to be installed.

[0018] Figure 2 This is an exploded view of the installation unit connection structure according to an embodiment of the present invention;

[0019] Figure 3 This is an exploded view of the connection structure of clamping component one, clamping component two, and tensioning component according to an embodiment of the present invention;

[0020] Figure 4 This is an exploded structural diagram of the connection component 1, the movable telescopic component 1, and the mating head in an embodiment of the present invention;

[0021] Figure 5 This is a side view schematic diagram of the connection structure of clamping component one, clamping component two, and tensioning component according to an embodiment of the present invention;

[0022] Figure 6 This is an exploded structural diagram of the connection components 2, 2 telescopic components, and the connector according to an embodiment of the present invention;

[0023] Figure 7 This is an exploded structural diagram of the connection between the butt joint and the mating head provided on the movable telescopic component one of the two installation units in an embodiment of the present invention.

[0024] Figure 8 This is a cross-sectional view of the connection between the butt joint and the mating head provided on the movable telescopic component one of the two installation units in an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram of the connection structure between the connecting component and the docking component in one side view according to an embodiment of the present invention;

[0026] Figure 10 for Figure 4 Enlarged view of region A in the middle.

[0027] Attached reference numerals: 1. Installed pipe; 2. Pipe to be installed; 3. Clamping assembly one; 31. Mounting component one; 311. Through slot one; 32. Auxiliary wheel one; 33. Support base plate one; 34. Threaded connector one; 35. Universal wheel one; 37. Positive and negative threaded rod one; 38. Abutment plate one; 39. Connecting block one; 310. Fixing plate one; 312. Connecting rod one; 4. Connecting assembly one; 41. Telescopic cylinder one; 42. Connecting head one; 421. Boss one; 43. Rotating head one; 45. Driving rotating gear one; 46. Driven rotating gear one; 47. Lifting plate one; 5. Docking assembly one; 51. Connecting cylinder one; 53. Fixing block one; 54. Connecting seat one; 6. Clamping assembly two; 61. Mounting component two; 611. Through slot two; 62. Auxiliary wheel two; 63. Support base plate two; 64. Threaded connector two; 65. Universal wheel two; 67. Positive and negative threaded rod two; 68. Abutment plate two; 69. Connecting block two; 610. Fixing plate two; 612. Connecting rod two; 7. Connecting assembly two; 71. Telescopic cylinder two; 72. Connecting head two; 721. Boss two; 73. Rotating head two; 75. Driven rotating gear two; 76. Driven rotating gear two; 77. Lifting plate two; 8. Docking assembly two; 81. Connecting cylinder two; 83. Fixing block two; 84. Connecting seat two; 9. Tensioning assembly; 91. Connecting rod; 92. Connecting bolt; 93. Connecting sleeve; 10. Locking piece; 101. Butt joint; 102. Mating head. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the following description of the invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connection" simply indicates a connection between devices and has no special meaning.

[0030] Furthermore, the technical fields and installation methods involved in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] For specific implementation examples, please refer to: Figures 1-10 An auxiliary positioning fixture for welding thermal pipelines includes two sets of installation units. Each set of installation units includes an installation module one and an installation module two. Installation module one includes a clamping component one 3, a connecting component one 4, and a docking component one 5; installation module two includes a clamping component two 6, a connecting component two 7, and a docking component two 8. Two sets of clamping components one 3 and two sets of clamping components two 6 are spaced apart, with each pair of clamping components one 3 and two sets of clamping components two 6 corresponding to each other. The two clamping components one 3 are connected by connecting components one 4, and the two clamping components two 6 are connected by connecting components two 7. The upper parts of the clamping components one 3 and the corresponding clamping components two 6 are connected by... The connection is secured by tensioning component 9; the first connection component 4 includes two telescopic cylinders 41, which are arranged opposite each other and rotatably connected; the second connection component 7 includes two telescopic cylinders 71, which are arranged opposite each other and rotatably connected; docking components 5 and 8 are respectively rotatably arranged above the middle of the first connection component 4 and the second connection component 7; docking components 5 on one set of installation units and docking components 5 on another set of installation units are detachably connected by locking component 10; docking components 8 on one set of installation units and docking components 8 on another set of installation units are detachably connected by locking component 10.

[0032] The locking component 10 includes a connector 101 and a mating head 102. The clamping component 1 3 includes a mounting component 31 with a through groove 311 on its upper part. The clamping component 2 6 includes a mounting component 2 61 with a through groove 611 on its upper part. The connector 101 is connected to the end of the mating component 5 or the mating component 2 8 on one of the mounting units. The mating head 102 is connected to the end of the mating component 5 or the mating component 2 8 on another mounting unit. The connector 101 and the mating head 102 are detachably connected.

[0033] The first docking assembly 5 includes a first connecting cylinder 51, the telescopic end of which is connected to a connector 101 or a mating head 102. The telescopic end of the first connecting cylinder 51 is adjusted to pass through a through slot 311. The second docking assembly 8 includes a second connecting cylinder 81, the telescopic end of which is connected to a connector 101 or a mating head 102. The telescopic end of the second connecting cylinder 81 is adjusted to pass through a through slot 611. The first installation modules in two adjacent installation units are detachably connected by connectors 101 and mating heads 102, respectively. The second installation modules in two adjacent installation units are detachably connected by connectors 101 and mating heads 102, respectively. The connectors 101 and mating heads 102 are plugged into each other and fastened with bolts.

[0034] The clamping assembly 3 is connected to the abutment plate 38 in the middle via a screw and nut structure, and the clamping assembly 6 is connected to the abutment plate 68 in the middle via a screw and nut structure. The abutment plate 38 and the abutment plate 68 cooperate to clamp the installed tube 1 or the tube 2 to be installed.

[0035] The clamping assembly 3 further includes an auxiliary wheel 32, a support base plate 33, a threaded connector 34, a caster wheel 35, and a fixing plate 310. The mounting component 31 adopts a U-shaped structure. The support base plate 33 is fixedly installed at the lower part of the mounting component 31. The two ends of the support base plate 33 are threadedly connected to the threaded connector 34. The four corners of the bottom of the support base plate 33 are equipped with casters 35. The casters 35 can drive the installation unit to move and adjust the relative position of the pipe to be installed 2 and the installed pipe 1. The casters 35 have a built-in brake structure to stop the installation unit. The threaded connector 34 can rotate downward and be inserted into the groove, which helps to fix the installation unit in place. Two opposing telescopic cylinders 41 are respectively connected to two clamping assemblies 3 on the same installation module. The fixing plate 310 is fixedly installed on the side of the mounting component 31. The fixing plate 310 is fixedly connected to the fixed end of the telescopic cylinder 41.

[0036] The clamping assembly 3 further includes a connecting rod 312, a connecting block 39, and a positive and negative threaded rod 37. The positive and negative threaded rod 37 is vertically rotatably disposed in the middle of the mounting component 31. The threads of the positive and negative threaded rod 37 are opposite at both ends in the axial direction. The two ends of the positive and negative threaded rod 37 are respectively threaded to the connecting block 39. The side of the connecting block 39 is rotatably connected to the connecting rod 312. The other end of the connecting rod 312 is rotatably connected to the end of the abutment plate 38. The positive and negative threaded rod 37 is driven to rotate by an adjusting motor (not shown in the figure), which drives the two connecting blocks 39 to move along the axial direction of the positive and negative threaded rod 37, thereby driving the connecting rod 312 to rotate, thereby adjusting the relative position of the abutment plate 38 and the mounting component 31.

[0037] The clamping assembly 2 6 also includes an auxiliary wheel 2 62, a support base plate 2 63, a threaded connector 2 64, a universal wheel 2 65, and a fixing plate 2 610. Two opposing telescopic cylinders 2 71 are respectively connected to two clamping assemblies 2 6 on the same mounting module 1. The structure and connection method of the auxiliary wheel 2 62, support base plate 2 63, threaded connector 2 64, universal wheel 2 65, and fixing plate 2 610 are the same as those of the auxiliary wheel 1 32, support base plate 1 33, threaded connector 1 34, universal wheel 1 35, and fixing plate 1 310.

[0038] The clamping assembly 2 6 further includes a connecting rod 2 612, a connecting block 2 69, and a positive and negative threaded rod 2 67; the corresponding clamping assembly 2 6 and clamping assembly 1 3 are symmetrically arranged within the same installation unit; the structure and connection method of the abutment plate 2 68, connecting rod 2 612, connecting block 2 69, and positive and negative threaded rod 2 67 are the same as those of abutment plate 1 38, connecting rod 1 312, connecting block 1 39, and positive and negative threaded rod 1 37.

[0039] The tensioning assembly 9 includes a connecting sleeve 93 and a connecting rod 91, which are slidably connected. The connecting sleeve 93 is fixedly installed on the upper part of the side of the mounting component 1 31 or the mounting component 2 61 facing the pipe, and the connecting rod 91 is fixedly installed on the upper part of the opposite side of the corresponding mounting component 2 61 or the mounting component 1 31. A sliding groove is provided through the side of the connecting sleeve 93. After the connecting rod 91 and the connecting sleeve 93 can be moved to a suitable position according to the specifications of the installed pipe 1 or the pipe 2 to be installed, the end of the connecting rod 91 connected to the connecting sleeve 93 can be fitted with a connecting bolt 92 and tightened with a nut.

[0040] The connecting assembly 4 further includes a connector 42, a rotating head 43, a driving rotating gear 45, and a driven rotating gear 46. The connector 42 and the rotating head 43 are rotatably connected. A lifting plate 47 is fixedly mounted on the connector 42, and a driving rotating gear 45 is rotatably mounted on the lifting plate 47. The driving rotating gear 45 is driven to rotate by a rotary motor (not shown in the figure). The rotary motor can be installed in the gap formed between the lower part of the lifting plate 47 and the connector 42. The driven rotating gear 46 is meshed with the side of the driving rotating gear 45. The driven rotating gear 46 is rotatably connected to the boss 421 fixedly mounted on the connector 42. The central axis of the driven rotating gear 46 is fixedly connected to the bottom of the docking assembly 5, and the driven rotating gear 46 is fixedly connected to its central axis. When the installation unit clamps the bent pipe, the installation module 1 is moved to one side of the bent pipe, and the two sets of clamping assemblies 1... 3 are located at the two ends of the bend. After connecting the clamping component 3 to the corresponding clamping component 6 in the installation module 2 through the tensioning component 9, the two telescopic cylinders 41 in the connecting component 4 are respectively installed on the corresponding clamping component 3. At this time, the two telescopic cylinders 41 are set at an angle. Then, the rotating head 43, the connecting head 42 and the mounting parts on the connecting head 42 are installed according to the above connection relationship. The rotary motor is started, the active rotating gear 45 rotates, driving the driven rotating gear 46 to rotate, and then driving the docking component 5 to rotate. The docking component 5 rotates until it is roughly parallel to the axis of the telescopic cylinder 41 facing the docking end of the installed pipe 1 or the pipe to be installed 2. This makes it easy for the connecting cylinder 51 to adjust the extension of the telescopic end to drive the mating head 101 or the mating head 102 to pass through the corresponding mounting part 31 and dock with the mating head 102 or the mating head 101 connected to the docking component 5 in the adjacent installation unit.

[0041] The second connecting component 7 further includes a second connecting head 72, a second rotating head 73, a second driving rotating gear 75, and a second driven rotating gear 76. A second boss 721 is fixedly provided on the second connecting head 72, and a second lifting plate 77 is fixedly provided on the first connecting head 42. The structure and connection method of the second connecting head 72, the second rotating head 73, the second driving rotating gear 75, the second driven rotating gear 76, the second boss 721, and the second lifting plate 77 are the same as those of the first connecting head 42, the first rotating head 43, the first driving rotating gear 45, the first driven rotating gear 46, the first boss 421, and the first lifting plate 47.

[0042] The docking assembly 5 also includes a fixing block 53, a connecting seat 54 is fixedly provided at the fixed end of the connecting cylinder 51, the central shaft of the driven rotating gear 46 is fixedly connected to the bottom center of the connecting seat 54, the telescopic end of the connecting cylinder 51 is fixedly connected to the fixing block 53, and the fixing block 53 is fixedly connected to the mating head 102 or the connector 101.

[0043] The second docking component 8 also includes a second fixing block 83. The telescopic end of the second connecting cylinder 81 is fixedly connected to the mating head 102 or the connecting head 101 through the fixed fixing block 83. The fixed end of the second connecting cylinder 81 is provided with a second connecting seat 84. The structure and connection method of the second connecting seat 84, the second fixing block 83 and the second connecting cylinder 81 are the same as those of the first connecting seat 54, the first fixing block 53 and the first connecting cylinder 51.

[0044] The brake system of the regulating motor and the rotary motor can reliably lock, and acts directly on the motor shaft through mechanical friction or electromagnetic force, forcibly preventing the rotation of the motor shaft and load when the power is off or the motor stops.

[0045] The telescopic cylinder 41, telescopic cylinder 71, and connecting cylinder 51 and connecting cylinder 81 adopt an electric multi-stage telescopic rod structure, which is existing technology.

[0046] When the mounting unit is used to clamp the installed pipe 1, which is a straight pipe, such as Figure 1 As shown, adjust the installation modules 1 and 2 in the installation unit to be positioned appropriately on both sides of the installed pipe 1. Tighten the connecting rod 91 and connecting sleeve 93 with nuts. Adjust the action of the abutment plate 38 and the abutment plate 68 to clamp the installed pipe 1. Adjust the distance between the two mounting parts 31 in clamping assembly 3 and the two mounting parts 61 in clamping assembly 6. Install the fixed ends of the two telescopic cylinders 41 and 71 on the corresponding mounting parts 31 and 61, respectively, so that the axes of the two telescopic cylinders 41 and 71 are approximately parallel. Adjust the rotation of the docking assembly 5 and the docking assembly 8, so that the connecting cylinder 51 and the connecting cylinder 81 are approximately parallel to the axis of the telescopic cylinder 41 or the telescopic cylinder 71, respectively. The connecting cylinders 51 and 81 move, so that their telescopic ends extend and drive the connector 101 to pass through the mounting parts 31 and 61, respectively.

[0047] When the pipe to be installed 2, which is a bent pipe, is clamped by the installation unit and the corresponding central angle of the bent pipe is 90°, the clamping components 1 and 2 in the installation unit are adjusted to be positioned at appropriate positions on both sides of the pipe to be installed 2 and connected by the connecting rod 91 and the connecting sleeve 93. The mounting component 1 31 and the corresponding mounting component 2 61 are both located at the end of the pipe to be installed 2. The abutting plate 1 38 and the abutting plate 2 68 are adjusted to cooperate in clamping the pipe to be installed 2. The connecting component 1 4 and the connecting component 2 7 are installed on the corresponding mounting component 1 31 and mounting component 2 61, respectively, so that the axes of the two telescopic cylinders 1 41 and the two telescopic cylinders 2 71 are approximately perpendicular. Until the docking component 1 5 is approximately parallel to the axis of the docking component 1 5 in the installation unit set on the installed pipe 1. The extension of the retracted ends of the connecting cylinder 1 51 and the connecting cylinder 2 81 is adjusted to drive the mating head 102 to move toward the installed pipe 1, until they pass through the mounting component 1 31 and the mounting component 2 61, respectively.

[0048] Move the tube to be installed 2 and connect and fix the mating head 102 to the corresponding mating head 101 in the installation unit set on the installed tube 1. At this time, the opposite sides of the two adjacent clamping components 3 set in the installation units of the installed tube 1 and the tube to be installed 2 are roughly parallel, the opposite sides of the two adjacent clamping components 6 are roughly parallel, and the axes of the installed tube 1 and the tube to be installed 2 are roughly coincident.

[0049] Adjust the retraction of the docking component 5 in the installation unit on the installed pipe 1, and drag the pipe 2 to be installed towards the installed pipe 1 until the end wall of the pipe 2 to be installed and the pipe 1 to be installed come into contact and are welded.

[0050] like Figure 1 As shown, after the pipe 2 to be installed is installed, if the next section is a straight pipe section, the installation unit set on the current pipe 2 to be installed is not disassembled. After the docking component 1 5 and docking component 2 8 in the installation unit are reset, they are rotated to be parallel to the axis of the telescopic cylinder 1 41 or telescopic cylinder 2 71 at the other end. Following the above steps, the installation unit on the previous installed pipe 1 is disassembled and connected to the next straight pipe section. The two adjacent installation units are moved and docked. The above process is repeated to perform auxiliary positioning for welding of the thermal pipeline.

Claims

1. An auxiliary positioning fixture for welding thermal pipelines, characterized in that: The system includes two sets of installation units. Each set includes an installation module 1 and an installation module 2. Installation module 1 includes a clamping component 1, a connecting component 1, and a docking component 1. Installation module 2 includes a clamping component 2, a connecting component 2, and a docking component 2. Clamping components 1 and 2 are arranged in two sets at intervals. The two clamping components 1 and 2 are connected by connecting components 1 and 2 respectively. The upper part of the clamping component 1 and the corresponding clamping component 2 are fastened together by a tensioning component. Clamping component 1 includes an abutment plate 1, and clamping component 2 includes an abutment plate 2. The abutment plates 1 and 2 cooperate to clamp the installed or uninstalled pipe. Connecting component 1 includes two telescopic cylinders 1, which are arranged opposite each other and rotatably connected. Connecting component 2 includes two telescopic cylinders 2, which are arranged opposite each other and rotatably connected. A docking component 1 and a docking component 2 are rotatably arranged above the middle of connecting component 1 and connecting component 2 respectively. The docking components 1 and 2 in the two adjacent installation units are detachably connected by locking components. The locking component includes a mating head and a fitting head. The mating head is connected to the end of mating component one or mating component two on one set of mounting units, and the fitting head is connected to the end of mating component one or mating component two on another set of mounting units. The mating head and the fitting head are detachably connected. The first docking component includes a first connecting cylinder, and the second docking component includes a second connecting cylinder. The telescopic ends of the first connecting cylinder and the second connecting cylinder are connected to a mating head or a fitting head. The telescopic end of the first connecting cylinder passes through the first through groove, and the telescopic end of the second connecting cylinder passes through the second through groove. The mating head and the fitting head are inserted and fastened. The clamping component 2 and clamping component 1 are symmetrically arranged within the same set of installation units. The clamping component 1 includes a mounting part 1 with a through groove 1 on the upper part, and the clamping component 2 includes a mounting part 2 with a through groove 2 on the upper part. The connecting assembly one also includes a connector one and a rotating head one; the connector one and the rotating head one are rotatably connected, and the upper part of the connector one is connected to the docking assembly one through a gear meshing structure; the connector one and the rotating head one are respectively fixedly connected to the telescopic end of the telescopic cylinder one. The second connecting component also includes a second connecting head and a second rotating head. The second connecting head is connected to the second docking component via a gear meshing structure. The second connecting head and the second rotating head are respectively fixedly connected to the telescopic end of the second telescopic cylinder.

2. The auxiliary positioning fixture for welding thermal pipelines according to claim 1, characterized in that: The clamping assembly one is connected to a connecting rod one in the middle via a screw and nut structure. The connecting rod one is rotatably connected to the abutment plate one. The clamping assembly two is connected to a connecting rod two in the middle via a screw and nut structure. The connecting rod two is rotatably connected to the abutment plate two. The abutment plate one and the abutment plate two cooperate to clamp the installed tube or the tube to be installed.

3. The auxiliary positioning fixture for welding thermal pipelines according to claim 1, characterized in that: The tensioning assembly includes a connecting sleeve and a connecting rod, which are slidably connected. The connecting sleeve is fixedly installed on the upper part of the side of the mounting part one or the mounting part two facing the pipe, and the connecting rod is fixedly installed on the upper part of the opposite side of the corresponding mounting part two or the mounting part one. A sliding groove is provided through the side of the connecting sleeve, and a connecting bolt is provided at the end of the connecting rod that connects to the connecting sleeve and is tightened by a nut.

4. The auxiliary positioning fixture for welding thermal pipelines according to claim 1, characterized in that: The mounting component has threaded connectors at both ends of its lower part, and universal wheels are installed at the four corners of the bottom of the mounting component. One side of the mounting component is fixedly connected to the fixed end of the telescopic cylinder through a fixed plate. The structure and connection method of the mounting component 2 are the same as those of the mounting component 1.

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