A support for welding pipes and method of use thereof

Abstract

The application discloses a support for pipe welding and a use method thereof, relates to the technical field of pipe welding, and is characterized by comprising a supporting base, a welding base and a limiting piece, the welding base is arranged on the side of the supporting base, the welding base is provided with a sliding block, the supporting base is provided with a sliding groove corresponding to the sliding block, the side of the supporting base is provided with a base, the limiting piece is fixed on the side of the welding base, the side of the welding base is provided with a fixing groove, the welding base is provided with an adjusting ring, and the limiting piece is fixed on the side of the welding base through a connecting ring arranged on the side of the supporting base. The device is provided with the supporting base, the welding base and the limiting piece, the supporting base and the welding base are detachably connected through the connecting mode of the sliding rail and the sliding block, the staff can select welding bases with different shapes and sizes according to different pipelines, the limiting piece comprises a first limiting piece and a second limiting piece, the two ends of the welding base are provided with adjusting rings, correspond to one section of pipeline respectively, the two pipelines are guaranteed to be consistent in centring, and the axis lines are located on the same straight line.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pipe welding, and particularly relates to a support for pipe welding and a use method thereof. BACKGROUND

[0002] In the construction, maintenance, daily maintenance and technical transformation of a hydropower station, welding is a common connection method in pipe connection, and the pipe is an important channel for conveying fluid such as oil, water and gas in the hydropower station, and the connection quality and stability thereof are directly related to the safe and stable operation of the entire hydropower station. The welded pipe requires good weld structure, small internal stress, good centering and no axis deviation after welding.

[0003] In the welding process, the traditional pipe fixing method is manual fixing or fixing by a common C-shaped clamp. Such fixing method can only fix a single pipe, and cannot make the two pipes well centered and parallel. After welding, the pipes may be skewed or misaligned, which affects the appearance of the pipe part on one hand, and on the other hand, increases the stress of the weld after the pipe is installed, which is not conducive to the stable operation of the pipe, increases the risk of pipe weld defects and leakage, and the unstable fixing method may also cause cracks, slag inclusion and other defects in the weld, reducing the strength and reliability of the weld.

[0004] The above pipe welding work is common in the construction process of maintenance, daily maintenance and technical transformation of a hydropower station. In order to solve this problem, a support for pipe welding and a use method thereof need to be designed. SUMMARY

[0005] The technical problem to be solved by the present application is to solve the deficiencies in the prior art, and to design a new support for pipe welding. The support for pipe welding has a perfect structure, and a support seat, a welding seat and a limiting piece are arranged. The pipe is placed on the welding seat to complete welding, and the limiting piece fixes the pipe to be welded. The limiting piece includes at least a first limiting piece and a second limiting piece. The welding seat is provided with an adjusting ring at both ends, corresponding to a section of pipe, to ensure that the two pipes are well centered and the axes are located on the same straight line.

[0006] The application adopts the following solution to solve the technical problem:

[0007] A support for pipe welding,

[0008] characterized in that

[0009] the support comprises a support seat, a welding seat and a limiting piece,

[0010] the welding seat is arranged on the side of the support seat,

[0011] The welding seat is provided with a sliding block, and the support seat is provided with a sliding groove corresponding to the sliding block,

[0012] The side of the support seat is provided with a base,

[0013] The limiting piece is fixed to the side of the welding seat,

[0014] The side of the welding seat is provided with a fixing groove,

[0015] The welding seat is provided with an adjusting ring,

[0016] The limiting piece is fixed to the side of the welding seat through the connecting ring provided on the side of the support seat.

[0017] As a preferred embodiment of the present application, the limiting piece comprises at least a first limiting piece and a second limiting piece,

[0018] Both ends of the welding seat are provided with adjusting rings,

[0019] The adjusting ring comprises a first adjusting ring and a second adjusting ring,

[0020] The first adjusting ring and the second adjusting ring are distributed on both sides of the fixing groove,

[0021] Both the first adjusting ring and the second adjusting ring are screw-connected with a first adjusting rod, and the end of the first adjusting rod is provided with a first wear-resistant pad.

[0022] As a preferred embodiment of the present application, the first limiting piece and the second limiting piece are consistent in structure,

[0023] The first limiting piece comprises a first support arm and a second support arm,

[0024] The first support arm and the second support arm are arranged in parallel,

[0025] A fixing arm is arranged between the first support arm and the second support arm,

[0026] The end of the first support arm is provided with a first fixing ring,

[0027] The end of the second support arm is provided with a second fixing ring,

[0028] A threaded rod is screw-connected inside the first fixing ring,

[0029] A fixing pin is connected inside the second fixing ring,

[0030] The end of the fixing pin is provided with a handle,

[0031] The fixing arm is provided with an adjusting hole,

[0032] The adjusting hole is threadedly connected with a second adjusting rod,

[0033] An end of the second adjusting rod close to the welding seat is provided with a second wear-resistant pad,

[0034] The other end of the second adjusting rod is connected with a first handle.

[0035] As a preferred embodiment of the present application, the first limiting piece is a semicircular structure,

[0036] Both ends of the limiting piece are provided with limiting rings,

[0037] The side of the supporting seat is provided with fixed columns corresponding to the limiting rings,

[0038] The side of the fixed column is provided with a connecting hole,

[0039] One end of the limiting piece is fixed by a fixed rod penetrating through the corresponding limiting ring and the fixed column corresponding to the limiting ring,

[0040] The other end of the limiting piece is fixed by a bolt penetrating through the corresponding limiting ring and the fixed column corresponding to the limiting ring;

[0041] The top of the limiting piece is provided with a limiting hole,

[0042] The limiting hole is threadedly connected with a third adjusting rod,

[0043] An end of the third adjusting rod close to the welding seat is provided with a third wear-resistant pad,

[0044] The other end of the third adjusting rod is provided with a second handle.

[0045] As a preferred embodiment of the present application, the supporting seat is provided with a first prefabricated hole,

[0046] The welding seat is provided with a second prefabricated hole corresponding to the position of the first prefabricated hole.

[0047] As a preferred embodiment of the present application, the side of the welding seat is provided with a tray,

[0048] The tray is fixed on the side of the welding seat by buckling,

[0049] The position of the tray corresponds to the position of the second prefabricated hole.

[0050] As a preferred embodiment of the present application, the fixed groove is a square groove.

[0051] As a preferred embodiment of the present application, the fixed groove is a circular groove.

[0052] As a preferred embodiment of the present application, the base is provided with a self-locking roller.

[0053] A method for using a support for pipe welding,

[0054] It is characterized in that,

[0055] Comprising the following steps:

[0056] S1: according to the shape of the pipe to be welded and the shape of the fixed groove, select the appropriate welding seat, disconnect the connection of one end of the limiting piece, rotate the limiting piece, replace the welding seat through the sliding block of the welding seat and the sliding groove of the supporting seat;

[0057] S2: place the pipe to be welded in the fixed groove;

[0058] S3: rotate the limiting piece, and reconnect the disconnected end of the limiting piece;

[0059] S4: adjust the first adjusting rod and the limiting piece, and clamp the pipe to be welded;

[0060] S5: perform welding work.

[0061] Compared with the prior art, the present application has the following beneficial effects:

[0062] 1、The device is provided with a supporting seat, a welding seat and a limiting piece, wherein the supporting seat and the welding seat are detachably connected through the connection mode of sliding rails and sliding blocks, and workers can select welding seats of different shapes and sizes, such as V-shaped, inner circular, outer circular, U-shaped, etc., according to pipe fittings of different sections, so as to avoid the situation that only one section shape pipe can be welded and ensure strong applicability.

[0063] 2、The supporting seat of the device is provided with a limiting piece and an adjusting ring, and there are clamps corresponding to the upper, left and right surfaces of the pipe, so as to ensure that the upper, lower, left and right surfaces of the pipe are fixed, the pipe can be stably and firmly fixed by appropriate clamps, and the axial deviation of the pipe due to thermal deformation during welding can be avoided.

[0064] 3、The limiting piece comprises at least a first limiting piece and a second limiting piece, and the two ends of the welding seat are provided with adjusting rings corresponding to one section of pipe respectively, so as to ensure that the two pipes are centered and consistent, and the axes are located on the same straight line.

[0065] 4、The first adjusting rod, the second adjusting rod and the third adjusting rod are adjusted by screw thread cooperation, which is convenient to adjust, firmly fixed, has a wide length range, can be applied to pipes of a wide size range, and meets the requirements of pipes of different sizes.

[0066] 5、The interval between the first limiting piece and the second limiting piece of the device is relatively large, enough space is left, and the connection mode between different pipes can meet the requirements. For example, the pipe is directly welded, the pipe is welded with the flange, or the pipe is welded with the threaded joint, so that the application range of the device is wider. BRIEF DESCRIPTION OF DRAWINGS

[0067] Figure 1 A plan view of a support for pipe welding according to the present application;

[0068] Figure 2 A side view of an embodiment of a support for pipe welding according to the present application;

[0069] Figure 3 A side view of an embodiment of a support for pipe welding according to the present application;

[0070] Figure 4 A side view of an embodiment of a support for pipe welding according to the present application;

[0071] Figure 5 A side view of an embodiment of a support for pipe welding according to the present application;

[0072] Figure 6 A side view of an embodiment of a support for pipe welding according to the present application;

[0073] Figure 7 A side view of an embodiment of a support for pipe welding according to the present application;

[0074] Figure 8 A plan view of a support seat for pipe welding according to the present application;

[0075] Figure 9 A partial side view of a support seat for pipe welding according to the present application;

[0076] Figure 10 A partial side view of a welding seat for pipe welding according to the present application.

[0077] BRIEF DESCRIPTION OF DRAWINGS

[0078] 1, support seat,

[0079] 1-1, sliding block,

[0080] 1-2, sliding groove,

[0081] 1-3, connecting ring,

[0082] 2, welding seat,

[0083] 2-1, fixed groove,

[0084] 2-2, adjusting ring,

[0085] 2-3, first adjusting rod,

[0086] 2-4, first limiting piece,

[0087] 2-5, second limiting piece,

[0088] 2-6, first adjusting ring,

[0089] 2-7, second adjusting ring

[0090] 3, limiting piece,

[0091] 3-1, first support arm,

[0092] 3-2, second support arm,

[0093] 3-3, fixed arm,

[0094] 3-4, threaded rod,

[0095] 3-5, fixed pin,

[0096] 3-6, handle,

[0097] 3-7, second adjusting rod,

[0098] 3-8, first handle,

[0099] 3-9, fixed column,

[0100] 3-10, fixed rod,

[0101] 3-11, latch,

[0102] 3-12, third adjusting rod,

[0103] 3-13, second handle,

[0104] 3-14, first prefabricated hole,

[0105] 3-15, second prefabricated hole,

[0106] 4, base,

[0107] 5, self-locking roller,

[0108] 6, pipe to be welded. DETAILED DESCRIPTION

[0109] The specific embodiment of the present application will be described below in conjunction with the accompanying drawings and examples:

[0110] It should be noted that the structure, color, proportion, size and the like shown in the drawings of the present application are only used to cooperate with the content disclosed in the present application, so as to be understood and read by those skilled in the art, and are not used to limit the defined conditions of the implementation of the present application. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and purpose of the present application, should still fall within the scope of the disclosed technology.

[0111] Meanwhile, in the description of the present application, it should be understood that the terms "one end", "the other end", "middle", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0112] In addition, the terms "first", "second", "third", "fourth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated, so that the features with "first", "second", "third", "fourth" can be explicitly or implicitly included at least one of the features.

[0113] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection", "fixing", "screw connection" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the present application can be understood according to the specific meaning of the specific circumstances by those skilled in the art.

[0114] As Figures 1-10 The present application provides a support for pipe welding, which comprises a supporting seat 1, a welding seat 2 and a limiting piece 3, the welding seat 2 is fixed on the supporting seat 1, the pipe to be welded 6 is fixed on the welding seat 2 to complete the welding work, and the limiting piece 3 is used for fixing the pipe to be welded 6 to prevent the pipe to be welded 6 from derailing in the welding process, thereby causing welding failure.

[0115] The welding seat 2 is arranged on the side of the supporting seat 1 and is fixed in a stacked manner, the supporting seat 1 supports the whole device and fixes the welding seat 2, and the welding seat 2 has a limiting function and fixes the pipe to be welded 6 on the device.

[0116] The welding seat 2 is provided with a sliding block 1-1, the support seat 1 is provided with a sliding groove 1-2 corresponding to the sliding block 1-1, the support seat 1 and the welding seat 2 are detachably connected through the sliding rail and the sliding block 1-1, the welding seat 2 can be slidably installed along the support seat 1, the welding seat 2 can be replaced, and the welding seat 2 suitable for the shape or size of the pipeline 6 to be welded is selected. The sliding connection not only provides convenience for installation, but also ensures the stability and accuracy of the welding seat 2 during use. When different shapes or sizes of pipelines need to be welded, the current welding seat 2 can be easily removed and replaced with a welding seat suitable for the shape or size of the new pipeline. The flexibility and applicability of the device are greatly improved, so that it can cope with various welding tasks according to various pipelines.

[0117] As a preferred embodiment of the present application, the fixing structure is arranged on the sliding rail to make the support seat 1 and the welding seat 2 stably connected, limit the sliding block 1-1, prevent the sliding block 1-1 from sliding by itself due to external force or vibration, and prevent the welding seat 2 from falling. After the sliding block 1-1 is slid to the required position along the sliding rail, the sliding block 1-1 is fixed on the sliding rail by operating the fixing structure, so as to ensure the stability of the welding seat 2 during connection.

[0118] Specifically, it can be a mechanical locking device, such as a locking screw, a buckle or a clamp, etc., to fix the position of the sliding block 1-1 on the sliding rail; it can also be a magnetic fixing device to adsorb the sliding block 1-1 on the sliding rail at a specific position by magnetic force to realize stable connection; in addition, other innovative fixing technologies can also be used, such as elastic locking mechanism, self-locking sliding device, etc.

[0119] The support seat 1 is provided with a base 4 on the side, the base 4 contacts the working platform, and the base 4 provides stable support for the whole structure, ensuring the stability and safety during welding. The base 4 supports the support seat 1 and the welding seat 2, leaving enough space for the falling of sundries and debris generated during welding, so that the sundries and debris generated during welding are easier to be cleaned, thereby keeping the working environment clean, and preventing the accumulation of sundries and debris from hindering the placement of the pipeline 6 to be welded and the welding operation.

[0120] The limiting piece 3 is fixed on the side of the welding seat 2, the limiting piece 3 is fixed on the left and right sides of the welding seat 2 at both ends, and the remaining part covers the upper side of the welding seat 2. The limiting piece at least includes a first limiting piece 2-4 and a second limiting piece 2-5, which correspond to two parts of the pipeline 2 to be welded, and ensure that the two pipelines are centered and consistent, and the axis is located on the same straight line.

[0121] The side of the welding seat 2 is provided with a fixing groove 2-1 for placing the pipeline 6 to be welded, and the shape of the fixing groove 2-1 is determined according to the shape of the common pipeline 6 to be welded (for example, V-shaped pipeline, inner circular (circular) pipeline, outer circular pipeline (understood as external shape), U-shaped pipeline and other common shapes).

[0122] The welding seat is provided with an adjusting ring 2 on both sides of the first limiting piece 2-4 and the second limiting piece 2-5, and the two adjusting rings 2 are consistent in structure. The adjusting ring 2-2 includes a first adjusting ring 2-6 and a second adjusting ring 2-7, which are fixed on both sides of the adjusting groove, respectively, for fixing the limiting piece 3 from both sides. Both of the two adjusting rings 2-2 are threadedly connected with a first adjusting rod 2-3, and the end of the first adjusting rod 2-3 clamps the pipeline 6 to be welded, thereby ensuring the stability of the pipeline 6 to be welded. The threaded connection allows the first adjusting rod 2-3 to be adjustable in depth, and the first adjusting rod 2-3 can be tightly attached to the pipeline 6 to be welded.

[0123] The limiting piece 3 is fixed to the side of the welding seat 2 through the connecting ring 1-3 provided on the side of the support seat 1, and is detachably connected through the connecting ring 1-3, which is convenient for transportation and maintenance.

[0124] As shown in Figure 3 and Figure 5 , the limiting piece 3 includes a first support arm 3-1 and a second support arm 3-2, which are arranged in parallel. A fixed arm 3-3 is arranged between the first support arm 3-1 and the second support arm 3-2, which is supported by the first support arm 3-1 and the second support arm 3-2, leaving enough space for the welding seat 2. When replacing the welding seat 2, the second support arm 3-2 can be directly extracted without opening it.

[0125] The end of the first support arm 3-1 is provided with a first fixing ring, and a threaded rod 3-4 is threadedly connected inside the first fixing ring. The threaded connection allows the limiting piece 3 to be detachable, and the threaded connection is more secure, which can more stably fix the second adjusting rod 3-7 during welding.

[0126] The end of the second support arm 3-2 is provided with a second fixing ring, and a fixed pin 3-5 is connected inside the second fixing ring. The end of the fixed pin 3-5 is provided with a handle 3-6. When the fixed pin 3-5 needs to be extracted, it can be extracted by holding the handle 3-6, which is convenient for opening the limiting piece 3.

[0127] One end of the limiting piece 3 is fixed by the threaded rod 3-4, and the other end is fixed by the fixed pin 3-5. When the fixed pin 3-5 is pulled out, the limiting piece 3 can be rotated, which is convenient for replacing the welding seat 2 and ensures that the welding seat 2 and the limiting piece 3 are connected stably while the limiting piece 3 is rotated for subsequent operation.

[0128] The fixed arm 3-3 is provided with an adjusting hole, a second adjusting rod 3-7 is screwed to the adjusting hole, the second adjusting rod 3-7 is screwed to the fixed arm 3-3, the length of the second adjusting rod 3-7 extending into the limiting piece 3 can be adjusted, and different sizes of the pipeline to be welded 6 can be adapted.

[0129] The second adjusting rod 3-7 is provided with a second wear-resistant pad at one end close to the welding seat 2, so that the second adjusting rod 3-7 can tightly abut the pipeline to be welded 6.

[0130] The other end of the second adjusting rod 3-7 is connected with a first handle 3-8, and the first handle 3-8 is held and rotated when the second adjusting rod is adjusted.

[0131] As a preferred embodiment of the present application, the surface of the first handle 3-8 can be further provided with a convexity fitted to the human body and a wear-resistant pad.

[0132] As shown in Figure 2 and Figure 4 As an embodiment of the present application, the limiting piece 3 is a semicircular structure, directly covers the upper side of the welding seat 2, fixes the third adjusting rod 3-12, and the end of the third adjusting rod 3-12 abuts the upper side of the pipeline to be welded 6, so that the pipeline to be welded 6 can be limited.

[0133] The limiting piece 3 is provided with a limiting ring at both ends, and the side of the support seat 1 is provided with a fixed column 3-9 corresponding to the limiting ring, the limiting ring is sleeved on the fixed column 3-9 or is horizontally penetrated by a rod-shaped structure to be fixed.

[0134] The side of the fixed column 3-9 is provided with a connecting hole, one end of the limiting piece 3 is fixed by penetrating the corresponding limiting ring and the fixed column 3-9 corresponding to the limiting ring with a fixed rod 3-10, and the other end of the limiting piece 3 is fixed by penetrating the corresponding limiting ring and the fixed column 3-9 corresponding to the limiting ring with a bolt 3-11.

[0135] One end of the limiting piece 3 is fixed by the fixed rod 3-10, and the other end is fixed by the bolt 3-11, when the bolt 3-11 is pulled out, the limiting piece 3 can be rotated, which is convenient for replacing the welding seat 2, and ensures that the welding seat 2 and the limiting piece 3 are stably connected and the limiting piece 3 is conveniently rotated for subsequent operation.

[0136] The top of the limiting piece 3 is provided with a limiting hole, a third adjusting rod 3-12 is screwed to the limiting hole, the third adjusting rod 3-12 is screwed to the top of the limiting piece 3, the length of the third adjusting rod 3-12 extending into the limiting piece 3 can be adjusted, and different sizes of the pipeline to be welded 6 can be adapted.

[0137] The third adjusting rod 3-12 is provided with a third wear-resistant pad at one end close to the welding seat 2, so that the third adjusting rod 3-12 can tightly abut the pipeline to be welded 6.

[0138] The other end of the third adjusting rod 3-12 is provided with a second handle 3-13. When adjusting the third adjusting rod, hold the second handle 3-13 and turn it.

[0139] The support seat 1 is provided with a first preformed hole 3-14, and the welding seat 2 is provided with a second preformed hole 3-15 corresponding to the position of the first preformed hole 3-14, so that the welding slag can fall onto the table top. The welding slag and other sundries generated during the welding process can smoothly fall onto the table top or other collection devices through the channel formed by the first preformed hole 3-14 and the second preformed hole 3-15, preventing the accumulation of residues and keeping the welding area relatively clean, thereby reducing the burden of cleaning work, reducing the interference of sundries on the welding operation, improving the efficiency of the welding operation, and ensuring the stability of the welding quality.

[0140] The side of the welding seat 2 is provided with a tray, and the position of the tray corresponds to the position of the second preformed hole 3-15. When the welding slag falls, it falls into the tray, facilitating centralized cleaning.

[0141] The tray is fixed on the side of the welding seat 2 by a buckle. The buckle is selected from existing buckles on the market, for example:

[0142] 1. Press buckle:

[0143] The press buckle usually has a flexible pressing part. When you need to fix the tray, just press the pressing part down, and the buckle will tightly lock the tray. When disassembling, press the release part of the buckle again or pull it, and the tray can be easily disassembled.

[0144] Advantages: easy to operate, fixed firmly, suitable for frequent disassembly occasions.

[0145] 2. Rotary buckle:

[0146] The rotary buckle usually includes a fixed part and a rotatable locking part. The fixed part is installed on the welding seat 2, and the locking part is connected with the tray. By rotating the locking part, the fixing and disassembly of the tray can be realized.

[0147] Advantages: strong structure, strong locking force, suitable for occasions that need to bear large load.

[0148] 3. Plug-in buckle:

[0149] The plug-in buckle allows the tray to be fixed and disassembled through simple plug-in action. It usually has a slot and a latch 3-11, which can be inserted into the slot and locked.

[0150] Advantages: fast installation and disassembly, suitable for occasions that need to quickly replace the tray.

[0151] 4. Spring buckle:

[0152] Spring buckle uses the elastic force of spring to realize the fixation of the tray. When the tray is put into the fixed position, the spring will tightly clamp the tray to prevent it from moving. When disassembling, the tray can be unlocked by pressing or pushing the release part of the spring.

[0153] Advantages: simple structure, reliable fixation, suitable for use in various environmental conditions.

[0154] 5. Button buckle:

[0155] The button buckle usually includes a button and a locking mechanism. When the button is pressed, the locking mechanism releases the tray, allowing it to be disassembled. After releasing the button, the locking mechanism relocks the tray.

[0156] Advantages: intuitive operation, easy to understand and use, suitable for occasions that need to be frequently operated by non-professionals.

[0157] So that the tray and the welding seat 2 can be detachably connected, and the tray can be removed during cleaning. At the same time, the detachable design makes the tray easy to replace.

[0158] As shown in Figure 4 and Figure 5 , the fixing groove 2-1 is a square groove corresponding to a square pipeline.

[0159] As shown in Figure 2 and Figure 3 , the fixing groove 2-1 is a circular groove corresponding to a circular pipeline.

[0160] As another preferred embodiment of the present application, the fixing groove 2-1 can also be a V-shaped groove or a U-shaped groove corresponding to the pipeline of the same shape.

[0161] The fixing groove 2-1 of the welding seat 2 is provided in different sizes and shapes to correspond to different pipelines, thereby improving the adaptability of the device.

[0162] The base 4 is provided with a self-locking roller 5, which can easily roll on various ground surfaces, including smooth ground, slightly uneven ground, and even stairs. When the device needs to be fixed in a certain position, only a slight step or rotation of the lock is needed, and the roller can be locked to ensure that the device is stable and immovable, facilitating movement.

[0163] Preferably, the setting of the self-locking roller 5 is determined according to the weight of the device. When welding small pipelines, the weight of the device is relatively light, and the staff can easily carry it, so there is no need to set the self-locking roller 5; when welding medium and large pipelines, the overall weight of the device is relatively heavy, and it is not convenient to move, so the self-locking roller 5 needs to be set to assist its movement.

[0164] The device is made of stainless steel, which increases the service life of the device.

[0165] A method for using a support for pipe welding,

[0166] S1: according to the shape of the pipe 6 to be welded and the shape of the fixing groove 2-1, select a suitable welding seat 2, disconnect one end of the limiting piece 3, rotate the limiting piece 3, replace the welding seat 2 through the sliding block 1-1 of the welding seat 2 and the sliding groove 1-2 of the supporting seat 1;

[0167] S2: place the pipe 6 to be welded in the fixing groove 2-1;

[0168] S3: rotate the limiting piece 3, and reconnect the disconnected end of the limiting piece 3;

[0169] S4: adjust the first adjusting rod 2-3 and the limiting piece 3, and clamp the pipe 6 to be welded;

[0170] S5: perform welding work.

[0171] The preferred embodiments of the application are described in detail above in combination with the drawings, but the application is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge possessed by those skilled in the art without departing from the purpose of the application.

[0172] Many other changes and modifications can be made without departing from the spirit and scope of the application. It should be understood that the application is not limited to the specific embodiments, and the scope of the application is defined by the appended claims.

Claims

1. A support for welding pipes, Its features are, It includes a support base (1), a welding base (2), and a limiting component (3). The welding seat (2) is disposed on the side of the support seat (1). The welding seat (2) is provided with a slider (1-1), and the support seat (1) is provided with a groove (1-2) corresponding to the slider (1-1). The support base (1) is provided with a base (4) on its side, and the base (4) is provided with a self-locking roller (5). The limiting member (3) is fixed to the side of the welding seat (2). The limiting member (3) includes at least a first limiting member (2-4) and a second limiting member (2-5). The first limiting member (2-4) has a semi-circular structure. The welding seat (2) has a fixing groove (2-1) on its side. The fixing groove (2-1) is a square groove or a circular groove; Adjustment rings (2-2) are provided at both ends of the welding seat (2). The regulating ring (2-2) includes a first regulating ring (2-6) and a second regulating ring (2-7). The first adjusting ring (2-6) and the second adjusting ring (2-7) are distributed on both sides of the fixed groove (2-1). Both the first adjusting ring (2-6) and the second adjusting ring (2-7) are threadedly connected to a first adjusting rod (2-3), and a first wear-resistant pad is provided at the end of the first adjusting rod (2-3). The limiting member (3) is fixed to the side of the welding seat (2) by a connecting ring (1-3) provided on the side of the support seat (1); The limiting member (3) is provided with limiting rings at both ends, and the support base (1) is provided with fixing posts (3-9) corresponding to the limiting rings on the side. The fixing column (3-9) is provided with a connection hole on its side. One end of the limiting member (3) is fixed by a fixing rod (3-10) passing through its corresponding limiting ring and the fixing post (3-9) corresponding to the limiting ring. The other end of the limiting member (3) is fixed by a pin (3-11) passing through its corresponding limiting ring and the fixing post (3-9) corresponding to the limiting ring; The limiting member (3) is provided with a limiting hole at its top. The limiting hole is threadedly connected to a third adjusting rod (3-12). The third adjusting rod (3-12) is provided with a third wear-resistant pad at one end near the welding seat (2). The other end of the third adjusting rod (3-12) is provided with a second handle (3-13). The support base (1) is provided with a first pre-drilled hole (3-14). The welding seat (2) is provided with a second pre-drilled hole (3-15) corresponding to the position of the first pre-drilled hole (3-14). The welding seat (2) is provided with a tray on its side, and the position of the tray corresponds to the position of the second pre-drilled hole (3-15). The tray is fixed to the side of the welding seat (2) by a snap fastener.

2. A method of using a support for pipe welding. The bracket for pipe welding as described in claim 1 is used. Its features are, Includes the following steps: S1: Select a suitable welding seat (2) according to the shape of the pipeline (6) to be welded and the shape of the fixed groove (2-1), disconnect the connection at one end of the limiting member (3), rotate the limiting member (3), and replace the welding seat (2) through the slider (1-1) of the welding seat (2) and the groove (1-2) of the support seat (1); S2: Place the pipe to be welded (6) in the fixing groove (2-1); S3: Rotate the limiting member (3) and reconnect the disconnected end of the limiting member (3); S4: Adjust the first adjusting rod (2-3) and the limiting part (3) to lock the pipeline to be welded (6); S5: Perform welding work.

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