A gas pipe welding auxiliary alignment mechanism

Abstract

The present invention discloses a gas pipe welding auxiliary alignment mechanism, which relates to the technical field of gas pipe welding, and comprises an alignment assembly, including a fixed ring, a clamping block and a connecting rod. The fixed ring is provided with a clamping slot, the clamping block slides in the clamping slot, and the connecting rod is fixed to one side of the clamping block. The number of the clamping block and the connecting rod are both multiple and evenly distributed in a ring shape on one side of the fixed ring; a moving assembly is arranged in the alignment assembly, and comprises a first gear, a connecting column, a fixing box, a spring, a rotating sleeve and a rotating column. The beneficial effects of the present invention are as follows: through the arrangement of the alignment assembly, it is used to fix the interface of the gas pipe, and through the arrangement of the moving assembly, when welding the interface of the gas pipe, the alignment assembly can be rotated, and then the welding position can be vacated without disassembling the alignment assembly, so that the alignment assembly can continue to support the gas pipeline during the welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipe welding, in particular to a gas pipe welding auxiliary alignment mechanism. Background Art

[0002] Gas pipes are pipelines used to transport coal gas, mainly composed of metal pipes, pipe connectors and valves, etc. Most of them are laid underground. When the interfaces of gas pipes are connected, in order to avoid loose sealing of the pipe connection parts and possible leakage, most of them are connected by welding. During the welding process of gas pipes, it is necessary to use a coupling to align the two pipe interfaces. After the welder points the positioning point, in order to avoid the coupling causing obstruction to the welding point, the coupling needs to be removed. Without the support of the coupling, the pipeline may shift slightly under the influence of its own gravity, slight vibrations in the surrounding environment, etc., resulting in deviations from the originally aligned positioning points, affecting the welding quality, and may make the weld uneven, increasing the probability of welding defects. After the coupling is removed, the shape and angle of the pipe interface may change subtly, which will lead to poor sealing of the pipe after welding and increase the risk of gas leakage. Summary of the Invention

[0003] In view of the above-mentioned problems existing in the existing auxiliary alignment mechanism for gas pipe welding, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is that the gas pipeline may be deflected during the welding process.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a gas pipe welding auxiliary alignment mechanism, comprising an alignment assembly, including a fixing ring, a clamping block, and a connecting rod, wherein the fixing ring is provided with a clamping groove, the clamping block slides in the clamping groove, and the connecting rod is fixed to one side of the clamping block, wherein the number of the clamping block and the connecting rod are both multiple and evenly distributed in a ring shape on one side of the fixing ring;

[0006] A moving component is arranged in the alignment component, including a first gear, a connecting column, a fixed box, a spring, a rotating sleeve and a rotating column. The first gear is rotatably connected to the block via a rotating shaft. A tooth groove is provided in the fixed ring, and the first gear is engaged with the tooth groove. The connecting column is fixed in the first gear. A chamber is provided in the connecting rod, and the fixed box is fixed in the chamber. The spring is arranged in the fixed box. The rotating sleeve is rotatably connected to the fixed box and fixed to the spring. The rotating column is rotatably connected to the rotating sleeve via a bearing.

[0007] As a preferred solution of the gas pipe welding auxiliary alignment mechanism described in the present invention, wherein: a rotating wheel is fixed on the outside of the rotating sleeve, a pull rope is wound around the outside of the rotating wheel, one end of the pull rope is fixed to the rotating wheel, and the other end passes through the outside of the connecting rod and is fixed with a pull block, a guide rail is fixed on the top of the connecting rod, and the pull block slides in the guide rail.

[0008] As a preferred solution of the gas pipe welding auxiliary alignment mechanism described in the present invention, wherein: a positioning frame is fixed on one side of the rotating sleeve, a limiting block is arranged in the positioning frame, a first spring is fixed on one side of the limiting block, one end of the first spring is fixed to the inner wall of the positioning frame, a limiting groove is provided on the rotating column, the limiting block is engaged with the limiting groove, one side of the limiting block is inclined, and there are multiple limiting grooves, which are evenly distributed in a ring shape on the outside of the rotating column.

[0009] As a preferred solution of the gas pipe welding auxiliary alignment mechanism described in the present invention, wherein: a support frame is fixed to the inner wall of the chamber, a movable frame is provided in the support frame, an insertion rod is provided in the movable frame, a second spring is fixed to one side of the insertion rod, one end of the second spring is fixed to the inner wall of the movable frame, a slot is provided on the rotating sleeve, the insertion rod is engaged with the slot, one side of the insertion rod is inclined, and there are multiple slots, which are evenly distributed in a ring shape on the outside of the rotating sleeve.

[0010] As a preferred solution of the gas pipe welding auxiliary alignment mechanism described in the present invention, wherein: a threaded column is inserted into the support frame, the threaded column is threadedly connected to the movable frame, a movable sleeve is sleeved on the outside of the threaded column, a fixed shaft is fixed in the movable sleeve, a spiral groove is opened on the threaded column, the fixed shaft slides in the spiral groove, one end of the movable sleeve passes through the outside of the connecting rod, and is movably connected to the connecting rod.

[0011] As a preferred solution of the gas pipe welding auxiliary alignment mechanism described in the present invention, a heating sleeve is fixed on one side of the connecting rod, an expansion block is provided in the heating sleeve, a movable plate is provided on one side of the expansion block, the movable plate is slidably connected to the heating sleeve, one end of the movable sleeve is fixed to the movable plate, the heating sleeve has a heat conducting effect, and the expansion block has the characteristics of thermal expansion and contraction.

[0012] As a preferred solution of the auxiliary alignment mechanism for gas pipe welding of the present invention, a third spring is provided on the outer side of the movable sleeve, and two ends of the third spring are respectively fixed to the movable plate and the inner wall of the heating sleeve.

[0013] As a preferred solution of the gas pipe welding auxiliary alignment mechanism described in the present invention, a driving pulley is fixed on the outside of the rotating column, a driven pulley is fixed on the outside of the connecting column, and the driving pulley and the driven pulley are connected by a belt drive.

[0014] As a preferred solution of the auxiliary alignment mechanism for gas pipe welding of the present invention, a fixing block is fixed on one side of the connecting rod, and a cleaning brush is fixed on one side of the fixing block.

[0015] As a preferred solution of the gas pipe welding auxiliary alignment mechanism of the present invention, the alignment assembly further includes a mounting block and a bolt, one side of the mounting block is fixed to the fixing ring, and the bolt is threadedly connected to the mounting block.

[0016] The beneficial effects of the present invention are as follows: by setting the alignment component, it is used to fix the interface of the gas pipe, and by setting the moving component, the alignment component can be rotated when welding the gas pipe interface, and then the welding position can be vacated without disassembling the alignment component, so that the alignment component can continue to support the gas pipeline during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0018] Figure 1 This is an overall diagram of the auxiliary alignment mechanism for gas pipe welding.

[0019] Figure 2 Auxiliary alignment mechanism for gas pipe welding Figure 1 A partial enlarged structural diagram of point A in the middle.

[0020] Figure 3 This is the connecting rod structure diagram of the auxiliary alignment mechanism for gas pipe welding.

[0021] Figure 4 This is the connection structure diagram of the connecting rod and clamping block of the auxiliary alignment mechanism for gas pipe welding.

[0022] Figure 5 This is a partial cross-sectional structural diagram of the fixing ring of the auxiliary alignment mechanism for gas pipe welding.

[0023] Figure 6 This is a cross-sectional structural diagram of the connecting rod of the auxiliary alignment mechanism for gas pipe welding.

[0024] Figure 7This is the structural diagram of the fixing box of the auxiliary alignment mechanism for gas pipe welding.

[0025] Figure 8 This is a cross-sectional structural diagram of the fixing box of the auxiliary alignment mechanism for gas pipe welding.

[0026] Figure 9 This is a cross-sectional structural diagram of the rotating column of the auxiliary alignment mechanism for gas pipe welding.

[0027] Figure 10 This is a cross-sectional structural diagram of the rotating sleeve and heating sleeve of the auxiliary alignment mechanism for gas pipe welding.

[0028] Figure 11 Auxiliary alignment mechanism for gas pipe welding Figure 10 A partial enlarged structural diagram of point B in the middle.

[0029] Figure 12 Auxiliary alignment mechanism for gas pipe welding Figure 10 A partial enlarged structural diagram at point C in the middle.

[0030] In the figure: 100, alignment assembly; 101, fixing ring; 102, clamping block; 103, connecting rod; 101-1, clamping slot; 200, moving assembly; 201a, first gear; 201b, connecting column; 201c, fixing box; 201d, mainspring; 201e, rotating sleeve; 201f, rotating column; 101-2, tooth groove; 103-1, chamber; 202a, rotating wheel; 202b, pull rope; 202c, pull block; 202d, guide rail; 203a, positioning frame; 203b, limit block; 203c, first spring; 201f-1, limit groove; 204a, support frame; 204b, movable frame; 204c, insertion rod; 204d, second spring; 201e-1, slot; 205a, threaded column; 205b, movable sleeve; 205c, fixed shaft; 205a-1, spiral groove; 206a, heating sleeve; 206b, expansion block; 206c, movable plate; 206d, third spring; 207a, driving pulley; 207b, driven pulley; 106, fixed block; 107, cleaning brush; 104, mounting block; 105, bolt. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments. Example 1

[0034] Reference Figure 1 and Figure 3-Figure 8 , which is the first embodiment of the present invention, provides a gas pipe welding auxiliary alignment mechanism, which includes an alignment assembly 100, including a fixing ring 101, a clamping block 102 and a connecting rod 103. The fixing ring 101 is provided with a clamping groove 101-1, the clamping block 102 slides in the clamping groove 101-1, and the connecting rod 103 is fixed to one side of the clamping block 102. There are multiple clamping blocks 102 and connecting rods 103, which are evenly distributed in a ring shape on one side of the fixing ring 101.

[0035] The fixing rings 101 are semicircular in shape, and there are four of them, two in a group, and the combination is ring-shaped. The two fixing rings 101 are hinged at the connection point. The number of blocks 102 is twice that of the connecting rod 103. The two blocks 102 are respectively fixed at the two ends of a connecting rod 103. There are three blocks 102 in a fixing ring 101. The blocks 102 are T-shaped and are connected to the fixing ring 101 through the slot 101-1. The fixing rings 101 on both sides are connected to the connecting rod 103 through the matching blocks 102.

[0036] Put the fixing ring 101 on the outside of the gas pipe and close the two connected fixing rings 101, so that the connecting rod 103 can be fitted with the gas pipe, and the interface of the gas pipe can be aligned and fixed by the connecting rod 103 to avoid the interface of the gas pipe from being offset and misaligned during the welding process.

[0037] Except for the topmost block 102, other blocks 102 are provided with pulleys, which contact the inner wall of the slot 101-1, thereby reducing the friction between the block 102 and the slot 101-1 and making the block 102 move more smoothly in the slot 101-1.

[0038] Except for the top connecting rod 103, the other connecting rods 103 are all provided with positioning wheels on the side in contact with the gas pipe. The positioning wheels are relatively long and fit the gas pipe. The gas pipe connection is positioned by the cooperation of the positioning wheels and the connecting rods 103. At the same time, when the connecting rod 103 moves outside the gas pipe, the friction between the connecting rod 103 and the gas pipe can be reduced by the positioning wheels.

[0039] Fixed rods are fixed on both sides of the block 102, and multiple blocks 102 are connected together by the fixed rods, so that when the top block 102 moves, it can push the other blocks 102 to move at the same time, so that when the connecting rod 103 moves, the distance between the multiple connecting rods 103 will not change. The fixing rod located at the connection between the two fixing rings 101 is in a truncated state, so as not to hinder the normal opening of the fixing ring 101. When the fixing ring 101 is closed, the truncated fixing rod will be connected again.

[0040] The moving assembly 200 is disposed in the alignment assembly 100 and includes a first gear 201a, a connecting column 201b, a fixed box 201c, a spring 201d, a rotating sleeve 201e and a rotating column 201f. The first gear 201a is rotatably connected to the block 102 via a rotating shaft. A tooth groove 101-2 is defined in the fixed ring 101, and the first gear 201a is engaged with the tooth groove 101-2. The connecting column 201b is fixed in the first gear 201a. A chamber 103-1 is defined in the connecting rod 103. The fixed box 201c is fixed in the chamber 103-1. The spring 201d is disposed in the fixed box 201c. The rotating sleeve 201e is rotatably connected to the fixed box 201c and fixed to the spring 201d. The rotating column 201f is rotatably connected to the rotating sleeve 201e via a bearing.

[0041] There are two first gears 201a, which are respectively located in the two uppermost blocks 102. The number of connecting columns 201b corresponds to the number of the first gears 201a. When the mainspring 201d is tightened and the torsional force is released, it will drive the rotating sleeve 201e and the rotating column 201f to rotate, and the two connecting columns 201b and the first gear 201a are driven to rotate through the rotating column 201f. When the first gear 201a rotates, it will move along the tooth groove 101-2 and drive the block 102 and the connecting rod 103 to move through the first gear 201a, thereby changing the position of the connecting rod 103 and making room for the welding position, so that the staff can weld different positions of the gas pipe interface without removing the fixing ring 101, so that the gas pipeline can be continuously fixed during the welding process.

[0042] The torsional force released by the mainspring 201d is sufficient to drive the connecting rod 103 to move outside the gas pipe, and when the torsional force of the mainspring 201d is completely released, the connecting rod 103 moves exactly one circle outside the gas pipe. Example 2

[0043] Reference Figures 1-12 , which is the second embodiment of the present invention, and is based on the previous embodiment.

[0044] Specifically, a rotating wheel 202a is fixed to the outside of the rotating sleeve 201e, and a pull rope 202b is wound around the outside of the rotating wheel 202a. One end of the pull rope 202b is fixed to the rotating wheel 202a, and the other end passes through the outside of the connecting rod 103 and is fixed with a pull block 202c. A guide rail 202d is fixed to the top of the connecting rod 103, and the pull block 202c slides in the guide rail 202d.

[0045] The pull block 202c is T-shaped. By pulling the pull block 202c, the pull rope 202b is moved, and the pull rope 202b drives the rotating wheel 202a to rotate, and the rotating wheel 202a drives the rotating sleeve 201e to rotate. In this way, the mainspring 201d can be tightened through the rotating sleeve 201e. The guide rail 202d is used to position the pull block 202c to prevent it from offset.

[0046] Specifically, a positioning frame 203a is fixed on one side of the rotating sleeve 201e, and a limiting block 203b is arranged in the positioning frame 203a. A first spring 203c is fixed on one side of the limiting block 203b, and one end of the first spring 203c is fixed to the inner wall of the positioning frame 203a. A limiting groove 201f-1 is provided on the rotating column 201f, and the limiting block 203b is engaged with the limiting groove 201f-1. One side of the limiting block 203b is inclined, and there are multiple limiting grooves 201f-1, which are evenly distributed in a ring shape on the outside of the rotating column 201f.

[0047] The cooperation between the limit block 203b and the limit slot 201f-1 is used to connect the rotating sleeve 201e and the rotating column 201f, so that when the rotating sleeve 201e tightens the mainspring 201d, it will not drive the rotating column 201f to rotate. When the mainspring 201d releases the elastic force to drive the rotating sleeve 201e to rotate, the rotating sleeve 201e can drive the rotating column 201f to rotate. The first spring 203c applies a thrust to the limit block 203b, so that the limit block 203b and the limit slot 201f-1 are more tightly engaged.

[0048] Specifically, a support frame 204a is fixed to the inner wall of the chamber 103-1, a movable frame 204b is provided in the support frame 204a, an insertion rod 204c is provided in the movable frame 204b, a second spring 204d is fixed to one side of the insertion rod 204c, one end of the second spring 204d is fixed to the inner wall of the movable frame 204b, a slot 201e-1 is provided on the rotating sleeve 201e, the insertion rod 204c is engaged with the slot 201e-1, one side of the insertion rod 204c is inclined, and there are multiple slots 201e-1, which are evenly distributed in a ring shape on the outside of the rotating sleeve 201e.

[0049] The support frame 204a is used to support and position the movable frame 204b. One side of the support frame 204a is movably connected to the rotating sleeve 201e. The rotating sleeve 201e is limited by the cooperation of the insertion rod 204c and the slot 201e-1, so that the rotating sleeve 201e can rotate freely when the spring 201d is tightened. When the connecting rod 103 is not welded yet, the rotating sleeve 201e is in a locked state, and the spring 201d will not rotate in the opposite direction of releasing the elastic force, thereby avoiding the elastic force of the spring 201d from being released at will, which will cause the connecting rod 103 to move before it is welded.

[0050] When the movable frame 204b drives the insertion rod 204c to move and separates the insertion rod 204c from the slot 201e-1, the restriction on the rotating sleeve 201e can be released, and the torsional force released by the spring 201d can drive the rotating sleeve 201e to rotate. The second spring 204d is used to apply a thrust to the insertion rod 204c, so that the insertion rod 204c and the slot 201e-1 are more tightly engaged.

[0051] Specifically, a threaded column 205a is inserted into the support frame 204a, and the threaded column 205a is connected to the inner thread of the movable frame 204b. A movable sleeve 205b is provided on the outside of the threaded column 205a, and a fixed shaft 205c is fixed in the movable sleeve 205b. A spiral groove 205a-1 is provided on the threaded column 205a, and the fixed shaft 205c slides in the spiral groove 205a-1. One end of the movable sleeve 205b passes through the outside of the connecting rod 103 and is movably connected to the connecting rod 103.

[0052] A threaded hole is provided in the movable frame 204b, and the threaded column 205a is threadedly connected to the threaded hole. When the movable sleeve 205b moves toward the threaded column 205a, it will drive the fixed shaft 205c to slide in the spiral groove 205a-1, and the cooperation between the two will drive the threaded column 205a to rotate. When the threaded column 205a rotates, the movable frame 204b is driven to move through the cooperation of the threaded hole, so that the movable frame 204b can drive the insertion rod 204c to separate from the slot 201e-1.

[0053] Specifically, a heating sleeve 206a is fixed on one side of the connecting rod 103, an expansion block 206b is provided in the heating sleeve 206a, a movable plate 206c is provided on one side of the expansion block 206b, the movable plate 206c is slidably connected to the heating sleeve 206a, and one end of the movable sleeve 205b is fixed to the movable plate 206c. The heating sleeve 206a has a heat-conducting effect, and the expansion block 206b has the characteristics of thermal expansion and contraction.

[0054] The heating sleeve 206a has a heating function and is provided with a temperature sensing mechanism. The heating sleeve 206a is located above the gas pipe interface. When welding the gas pipe, welding starts from the interface position below the heating sleeve 206a. During the welding process, a large amount of high temperature will be generated at the welding point. At this time, after the heating sleeve 206a senses the increase in ambient temperature, it indicates that the welding work has started. The heating sleeve 206a starts heating and transfers heat to the expansion block 206b. The expansion block 206b expands due to the heat and pushes the movable plate 206c to move, so that the movable plate 206c can drive the movable sleeve 205b to move. Example 3

[0055] Reference Figures 1-12 , which is the third embodiment of the present invention, is based on the first two embodiments.

[0056] Specifically, a third spring 206d is provided on the outer side of the movable sleeve 205b, and two ends of the third spring 206d are respectively fixed to the movable plate 206c and the inner wall of the heating sleeve 206a.

[0057] When welding stops and the expansion block 206b contracts, the third spring 206d can push the movable plate 206c and the movable sleeve 205b to reset.

[0058] Specifically, a driving pulley 207a is fixed to the outside of the rotating column 201f, and a driven pulley 207b is fixed to the outside of the connecting column 201b. The driving pulley 207a and the driven pulley 207b are connected by belt transmission.

[0059] The rotating column 201f is connected to the connecting column 201b via a driving pulley 207a and a driven pulley 207b, so that the rotating column 201f can drive the connecting column 201b to rotate when it rotates.

[0060] There are two driving pulleys 207a and two driven pulleys 207b, which are respectively fixed to the two ends of the rotating column 201f and the two connecting columns 201b.

[0061] Specifically, a fixing block 106 is fixed to one side of the connecting rod 103 , and a cleaning brush 107 is fixed to one side of the fixing block 106 .

[0062] The cleaning brush 107 is located inside the interface of the gas pipe. When the connecting rod 103 moves, it will drive the fixed block 106 and the cleaning brush 107 to move, so that the gas pipe interface can be cleaned by the cleaning brush 107, thereby avoiding impurities at the interface that may affect the welding quality.

[0063] Specifically, the alignment assembly 100 further includes a mounting block 104 and a bolt 105 . One side of the mounting block 104 is fixed to the fixing ring 101 , and the bolt 105 is threadedly connected in the mounting block 104 .

[0064] There are two sets of mounting blocks 104 and bolts 105, which are respectively located on the fixing rings 101 on both sides. The mounting blocks 104 and the bolts 105 cooperate to lock and fix the closed fixing ring 101, so that the fixing ring 101 can be tightly clamped to the outside of the gas pipe.

[0065] In summary, the gas pipe welding auxiliary alignment mechanism of the present invention has the following advantages:

[0066] During the gas pipeline welding process, there is no need to remove the alignment assembly 100 from the gas pipe. As the welding position moves, the alignment assembly 100 can adaptably move and make way for the welding position, thereby being able to fix the gas pipe throughout the entire welding process, effectively preventing the pipe from shifting or shaking due to external factors, and ensuring the accuracy and stability of the welding.

[0067] The alignment assembly 100 can automatically rotate out of the way according to the welding position, so the welder does not need to frequently manually adjust or pause welding to deal with the obstruction problem of the alignment assembly 100, and the welding process is smoother;

[0068] It only rotates when welding and remains stationary when welding stops, reducing unnecessary mechanical wear;

[0069] While the alignment assembly 100 is moving, the interface can be cleaned in real time, thereby preventing impurities at the interface from affecting the welding quality of the gas pipe.

[0070] When in use, the fixing ring 101 is put on the outside of the gas pipe and the two connected fixing rings 101 are closed, so that the connecting rod 103 can be fitted with the gas pipe, and the interface of the gas pipe can be aligned and fixed by the connecting rod 103 to avoid displacement and misalignment of the interface of the gas pipe during welding.

[0071] Before welding, the pulling block 202c is pulled to move the pulling rope 202b, so that the pulling rope 202b drives the rotating wheel 202a to rotate, and the rotating sleeve 201e is driven to rotate through the rotating wheel 202a, so that the mainspring 201d can be tightened through the rotating sleeve 201e.

[0072] When welding the gas pipe, welding starts from the interface position below the heating sleeve 206a. During the welding process, a large amount of high temperature will be generated at the welding point. At this time, after the heating sleeve 206a senses the increase in ambient temperature, it means that the welding work has started. The heating sleeve 206a starts heating and transfers heat to the expansion block 206b. The expansion block 206b expands due to the heat and pushes the movable plate 206c to move, so that the movable plate 206c can drive the movable sleeve 205b to move.

[0073] When the movable sleeve 205b moves in the direction of the threaded column 205a, it will drive the fixed shaft 205c to slide in the spiral groove 205a-1, and the cooperation between the two will drive the threaded column 205a to rotate. When the threaded column 205a rotates, the movable frame 204b is driven to move through the cooperation of the threaded hole, so that the movable frame 204b can drive the insertion rod 204c to separate from the slot 201e-1, thereby releasing the restriction on the rotating sleeve 201e, and then the torsional force released by the spring 201d can drive the rotating sleeve 201e to rotate.

[0074] The rotating sleeve 201e drives the rotating column 201f to rotate, and the rotating column 201f drives the two connecting columns 201b and the first gear 201a to rotate. When the first gear 201a rotates, it moves along the tooth groove 101-2, and drives the block 102 and the connecting rod 103 to move through the first gear 201a, so that the position of the connecting rod 103 can be changed, and the welding position can be made available, so that the staff can weld different positions of the gas pipe interface without removing the fixing ring 101, so that the gas pipeline can be continuously fixed during the welding process.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A gas pipe welding auxiliary alignment mechanism, characterized by: include, An alignment assembly (100) comprises a fixing ring (101), a clamping block (102) and a connecting rod (103), wherein a clamping slot (101-1) is provided on the fixing ring (101), the clamping block (102) slides in the clamping slot (101-1), and the connecting rod (103) is fixed to one side of the clamping block (102), and the clamping blocks (102) and the connecting rod (103) are both plural in number and uniformly distributed in a ring shape on one side of the fixing ring (101); The moving component (200) is arranged in the alignment component (100), and includes a first gear (201a), a connecting column (201b), a fixed box (201c), a spring (201d), a rotating sleeve (201e) and a rotating column (201f), wherein the first gear (201a) is rotatably connected to the block (102) via a rotating shaft, a tooth groove (101-2) is provided in the fixing ring (101), and the first gear (201a) is meshed with the tooth groove (101-2), and the connecting column (201b) is fixed in the first gear (201a), a chamber (103-1) is opened in the connecting rod (103), the fixed box (201c) is fixed in the chamber (103-1), the mainspring (201d) is arranged in the fixed box (201c), the rotating sleeve (201e) is rotatably connected in the fixed box (201c) and fixed to the mainspring (201d), and the rotating column (201f) is rotatably connected in the rotating sleeve (201e) via a bearing; A positioning wheel is provided on the side of the connecting rod (103) that contacts the gas pipe. The positioning wheel is relatively long and fits the gas pipe. The gas pipe connection is positioned by the cooperation of the positioning wheel and the connecting rod (103). When the connecting rod (103) moves outside the gas pipe, the friction between the connecting rod (103) and the gas pipe can be reduced by the positioning wheel. Fixed rods are fixed on both sides of the clamping block (102), and a plurality of the clamping blocks (102) are connected together via the fixed rods. When the connecting rod (103) moves, the distance between the plurality of connecting rods (103) does not change.

2. The gas pipe welding auxiliary alignment mechanism according to claim 1, characterized in that: A rotating wheel (202a) is fixed on the outside of the rotating sleeve (201e), a pull rope (202b) is wound around the outside of the rotating wheel (202a), one end of the pull rope (202b) is fixed to the rotating wheel (202a), and the other end passes through the outside of the connecting rod (103) and is fixed with a pull block (202c), a guide rail (202d) is fixed on the top of the connecting rod (103), and the pull block (202c) slides in the guide rail (202d).

3. The auxiliary alignment mechanism for gas pipe welding according to claim 2, characterized in that: A positioning frame (203a) is fixed on one side of the rotating sleeve (201e), a limiting block (203b) is provided in the positioning frame (203a), a first spring (203c) is fixed on one side of the limiting block (203b), one end of the first spring (203c) is fixed to the inner wall of the positioning frame (203a), a limiting groove (201f-1) is provided on the rotating column (201f), the limiting block (203b) is engaged with the limiting groove (201f-1), one side of the limiting block (203b) is inclined, and there are a plurality of limiting grooves (201f-1) uniformly distributed in a ring shape on the outside of the rotating column (201f).

4. The gas pipe welding auxiliary alignment mechanism according to claim 2 or 3, characterized in that: A support frame (204a) is fixed to the inner wall of the chamber (103-1), a movable frame (204b) is provided in the support frame (204a), an insertion rod (204c) is provided in the movable frame (204b), a second spring (204d) is fixed to one side of the insertion rod (204c), one end of the second spring (204d) is fixed to the inner wall of the movable frame (204b), a slot (201e-1) is provided on the rotating sleeve (201e), the insertion rod (204c) is engaged with the slot (201e-1), one side of the insertion rod (204c) is inclined, and there are a plurality of slots (201e-1) uniformly distributed in a ring shape on the outside of the rotating sleeve (201e).

5. The gas pipe welding auxiliary alignment mechanism according to claim 4, characterized in that: A threaded column (205a) is inserted into the support frame (204a), the threaded column (205a) is threadedly connected to the movable frame (204b), a movable sleeve (205b) is sleeved on the outside of the threaded column (205a), a fixed shaft (205c) is fixed in the movable sleeve (205b), a spiral groove (205a-1) is provided on the threaded column (205a), the fixed shaft (205c) slides in the spiral groove (205a-1), and one end of the movable sleeve (205b) passes through the outside of the connecting rod (103) and is movably connected to the connecting rod (103).

6. The auxiliary alignment mechanism for gas pipe welding according to claim 5, characterized in that: A heating sleeve (206a) is fixed to one side of the connecting rod (103), an expansion block (206b) is provided in the heating sleeve (206a), a movable plate (206c) is provided on one side of the expansion block (206b), the movable plate (206c) is slidably connected to the heating sleeve (206a), one end of the movable sleeve (205b) is fixed to the movable plate (206c), the heating sleeve (206a) has a heat conduction effect, and the expansion block (206b) has the characteristic of thermal expansion and contraction.

7. The gas pipe welding auxiliary alignment mechanism according to claim 6, characterized in that: A third spring (206d) is provided on the outer side of the movable sleeve (205b), and two ends of the third spring (206d) are respectively fixed to the movable plate (206c) and the inner wall of the heating sleeve (206a).

8. The auxiliary alignment mechanism for gas pipe welding according to claim 6 or 7, characterized in that: A driving pulley (207a) is fixed on the outside of the rotating column (201f), and a driven pulley (207b) is fixed on the outside of the connecting column (201b). The driving pulley (207a) and the driven pulley (207b) are connected via a belt drive.

9. The gas pipe welding auxiliary alignment mechanism according to claim 8, characterized in that: A fixing block (106) is fixed to one side of the connecting rod (103), and a cleaning brush (107) is fixed to one side of the fixing block (106).

10. The gas pipe welding auxiliary alignment mechanism according to claim 9, characterized in that: The alignment assembly (100) further comprises a mounting block (104) and a bolt (105), wherein one side of the mounting block (104) is fixed to the fixing ring (101), and the bolt (105) is threadedly connected in the mounting block (104).

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