Heating and ventilation pipeline welding auxiliary device

Abstract

The utility model belongs to the technical field of pipeline welding, and particularly relates to a heating and ventilation pipeline welding auxiliary device which comprises a mounting seat, a locking mechanism, a rotating mechanism, a cooling mechanism and an auxiliary welding mechanism. A threaded hole is formed below the adjusting groove, an adjusting nut is movably installed in the adjusting groove, a bolt ejector rod is fixedly installed below the adjusting nut, and the bolt ejector rod is movably installed in the threaded hole through threads. According to the heating and ventilation pipeline welding auxiliary device, the two sections of heating and ventilation pipes are fixedly connected through the design of the locking mechanism, welding deviation caused by deviation of the heating and ventilation pipes in the welding process is prevented, meanwhile, through the design of the rotating mechanism, surrounding welding of the heating and ventilation pipes can be completed under the condition that the device is not installed again through cooperation of the rotating mechanism and a fixing block, and the welding efficiency is improved. Time is saved, and welding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, specifically to an auxiliary device for welding HVAC pipelines. Background Technology

[0002] HVAC pipe welding auxiliary devices are equipment used to assist welding work during the installation of HVAC systems. With the widespread use of HVAC equipment in buildings, the installation and connection of HVAC pipes have become increasingly important. Welding is a common connection method during HVAC pipe installation, especially for rigid pipes. However, traditional connection methods may have some problems, such as inconsistent weld quality, low efficiency, and high skill requirements for workers.

[0003] To address these issues, auxiliary devices for HVAC pipe welding have emerged. These devices help workers connect and secure pipes more accurately, improving welding quality and efficiency. For example, some devices can ensure the accuracy and sealing of welded joints by adjusting the angle and position of the pipes. Furthermore, some devices are equipped with cooling systems that can rapidly cool the weld seam after connection, improving its strength and stability.

[0004] According to the description in the patent application "An Auxiliary Device for Welding of HVAC Pipes" (authorization publication number: CN221047607U), "This utility model relates to the field of welding technology, and in particular to an auxiliary device for welding of HVAC pipes, including a base, a slip ring, an anchor ring, an anchor plate, a connecting frame, a fan, a duct, and a counterweight chamber; this utility model uses an anchor ring secured by bolts as a structure for auxiliary fixing of HVAC pipe joint welding, which helps workers concentrate on welding work, prevents relative movement between the two pipes, improves the fixing effect, and ensures the quality of the butt welding. The rotating connection structure of the anchor ring and the slip ring facilitates the rotation of the HVAC pipes during welding, which is beneficial for operators to adjust the welding position of the pipe joint around the circumference using the welding torch. Welding below the pipe joint is easier, solving the problem that the pipes are prone to shaking and misalignment during HVAC pipe joint welding, resulting in poor welding quality."

[0005] Regarding the aforementioned technologies, the inventors believe that the stability of a single-sided fixing method cannot be guaranteed, and misalignment is still prone to occur during the welding process, affecting the welding quality. In addition, prolonged welding can cause fatigue in welders, leading to welding errors. Therefore, there is an urgent need to improve a welding auxiliary device for HVAC ducts to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an auxiliary device for welding HVAC pipes to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a welding auxiliary device for HVAC pipes, comprising a mounting base, wherein two sets of mounting bases are provided, the two sets of mounting bases are respectively fitted onto two sets of HVAC pipes, a sleeve is movably installed between the two sets of mounting bases, an auxiliary clamping device is fixedly installed in the middle position of the left sleeve by welding, and the connection between the two sets of sleeves is fixedly connected by a connecting mechanism; the welding auxiliary device for HVAC pipes includes a locking mechanism, a rotating mechanism, a cooling mechanism, and an auxiliary welding mechanism, wherein the locking mechanism includes a mounting base, both sets of mounting bases are provided with adjusting grooves, a threaded hole is provided below the adjusting groove, an adjusting nut is movably installed in the adjusting groove, a bolt top rod is fixedly installed below the adjusting nut, and the bolt top rod is movably installed in the threaded hole by thread.

[0008] Preferably, the connecting part of the two sets of sleeves is provided with a flange, and the two sets of flanges are provided with two sets of slots, which are located on opposite sides.

[0009] Preferably, a fixed shaft is fixedly installed in the left slot, a connecting seat is movably installed on the fixed shaft, a stud is fixedly installed on the connecting seat by welding, and a nut is movably installed on the stud by thread.

[0010] Preferably, the rotating mechanism includes a sleeve, and an arc-shaped groove is provided at the middle position of the connection between the sleeve and the mounting base. Steel balls are movably installed in the arc-shaped groove, and multiple sets of steel balls are provided.

[0011] Preferably, the cooling mechanism includes a sleeve, an air injection pipe is provided on the right sleeve, and an observation port is provided on the left flange of the air injection pipe. When welding the HVAC pipe, the air injection pipe is connected to the air compressor outlet pipe to cool the HVAC pipe during the welding process.

[0012] Preferably, the auxiliary welding mechanism includes an auxiliary clamping device, which includes a fixing block. The fixing block is fixedly installed on the right sleeve and flange by welding. The fixing block has a through hole running vertically through it, and a limiting cavity is provided on the right side of the through hole.

[0013] Preferably, a limiting block is movably installed inside the limiting cavity, a connecting rod is fixedly installed on the limiting block, the top opening diameter of the limiting cavity is smaller than the size of the limiting block, a spring is fixedly installed between the upper surface of the limiting block and the inner surface of the top of the limiting cavity, a pressure block is fixedly installed on the top of the connecting rod, a slot is provided at the position of the pressure block corresponding to the through hole, an electrode plate is fixedly installed in the slot, the through hole corresponds to the position of the observation port, and the entire device is made of high-temperature resistant insulating material.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This HVAC duct welding auxiliary device, through the design of the locking mechanism, after the device is initially fixed, the bolt rod is pressed against the HVAC pipe by turning the adjusting nut. When the slots on both sides are aligned, the stud is rotated and the locking nut is tightened to fix the sleeves on both sides, thus fixing the HVAC pipe and preventing the pipe from shifting during the welding process, which would cause welding deviation.

[0016] 2. This HVAC pipe welding auxiliary device, through the design of the rotating mechanism, and in conjunction with the auxiliary clamping device, drives the welding rod installed in the through hole to rotate and weld along the welding joint, avoiding the need to reinstall the device when welding HVAC pipes, thus saving time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0018] Figure 2 This is a half-sectional schematic diagram of the fixing base of this utility model;

[0019] Figure 3 This is a schematic diagram of the locking mechanism structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the rotating mechanism structure of this utility model;

[0021] Figure 5 This is a schematic half-sectional view of the entire utility model.

[0022] In the diagram: 1 Mounting base, 2 Auxiliary clamping device, 3 Observation port, 4 Sleeve, 5 HVAC pipe, 6 Adjusting nut, 7 Connecting mechanism, 201 Adjusting groove, 202 Bolt top rod, 203 Threaded hole, 204 Flange, 205 Fixed shaft, 206 Connecting seat, 207 Slot, 208 Stud, 209 Nut, 210 Arc groove, 211 Steel ball, 212 Air injection pipe, 301 Fixing block, 302 Limiting cavity, 303 Limiting block, 304 Connecting rod, 305 Spring, 306 Pressure block, 307 Through hole, 308 Slot, 309 Electrode plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0024] Please see Figures 1-4This utility model provides a technical solution: a welding auxiliary device for HVAC pipes, including a mounting base 1, which has two sets. The two sets of mounting base 1 are respectively fitted onto two sets of HVAC pipes 5. A sleeve 4 is movably installed between the two sets of mounting base 1. An auxiliary clamping device 2 is fixedly installed in the middle of the left sleeve 4 by welding. The connection between the two sets of sleeves 4 is fixedly connected by a connecting mechanism 7. The welding auxiliary device for HVAC pipes includes a locking mechanism, a rotating mechanism, a cooling mechanism, and an auxiliary welding mechanism. The locking mechanism includes an adjusting groove 201 on both sets of mounting base 1. A threaded hole 203 is provided below the adjusting groove 201. An adjusting nut 6 is movably installed in the adjusting groove 201. A bolt top rod 202 is fixedly installed below the adjusting nut 6. The bolt top rod 202 is movably installed in the threaded hole 203 by thread.

[0025] The connection part of the two sets of sleeves 4 is provided with flanges 204, and the two sets of flanges 204 are provided with two sets of slots 207, which are located on opposite sides.

[0026] A fixed shaft 205 is fixedly installed in the left slot 207. A connecting seat 206 is movably installed on the fixed shaft 205. A stud 208 is fixedly installed on the connecting seat 206 by welding. A nut 209 is movably installed on the stud 208 by thread.

[0027] The rotating mechanism includes a sleeve 4. An arc-shaped groove 210 is provided at the middle position of the connection between the sleeve 4 and the mounting base 1. Steel balls 211 are movably installed in the arc-shaped groove, and multiple sets of steel balls 211 are provided.

[0028] The cooling mechanism includes a sleeve 4, with an air injection pipe 212 on the right side of the sleeve 4 and an observation port 3 on the left flange 204 of the air injection pipe 212.

[0029] The device is fixed to two sections of HVAC pipes respectively. By tightening the adjusting nut 6, the end of the bolt rod 202 is pressed against the HVAC pipe 5 to prevent the mounting base 1 from shaking with the HVAC pipe 5, so that the two sections of HVAC pipes are connected together and the slots 207 on the two sets of flanges 204 correspond. At this time, the nut 209 is loosened, the stud 208 is rotated so that the stud 208 is locked in the slot 207, and the nut 209 is tightened so that the two sets of flanges are tightly pressed together, making the device a whole and preventing the HVAC pipes from shaking during the welding process. The air compressor outlet pipe is connected to the air injection pipe 212, and welding begins. The air compressor is turned on to cool the whole device. At the same time, the auxiliary clamping device 2 is rotated to drive the welding rod inside the auxiliary clamping device 2 to rotate together, completing the ring welding of the HVAC pipes. Example

[0030] Please see Figure 5This utility model provides a technical solution: a welding auxiliary device for HVAC pipes. The auxiliary welding mechanism includes an auxiliary clamping device 2. The auxiliary clamping device 2 includes a fixing block 301. The fixing block 301 is fixedly installed on the right sleeve 4 and flange 204 by welding. The fixing block 301 has a through hole 307 that runs vertically through it. A limiting cavity 302 is provided on the right side of the through hole 307.

[0031] A limiting block 303 is movably installed inside the limiting cavity 302. A connecting rod 304 is fixedly installed on the limiting block 303. The top opening diameter of the limiting cavity 302 is smaller than the size of the limiting block 303. A spring 305 is fixedly installed between the upper surface of the limiting block 303 and the inner surface of the top of the limiting cavity 302. A pressure block 306 is fixedly installed on the top of the connecting rod 304. A slot 308 is provided at the position of the pressure block 306 corresponding to the through hole 307. An electrode plate 309 is fixedly installed in the slot 308. The through hole 307 corresponds to the position of the observation port 3. The entire device is made of high-temperature resistant insulating material.

[0032] When welding begins, the connecting rod 304 is pulled out, and the welding rod is placed in the through hole 307. The electrode end of the welding rod is pressed against the electrode plate 309, and the welding end is pressed against the part of the HVAC pipe to be welded. During the welding process, as the length of the welding rod decreases, the welding rod is continuously moved down by the spring 305, so that the welding end is always in contact with the HVAC pipe.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A heating and plumbing pipe welding aid device comprising a mounting seat (1), characterized in that: Two groups of mounting seats (1) are provided, the two groups of mounting seats (1) are sleeved on two groups of heating pipes (5), sleeve sleeves (4) are movably arranged between the two groups of mounting seats (1), the middle position of the sleeve sleeve (4) on the left side is fixedly provided with an auxiliary clamping device (2) by welding, and the connecting portions of the two groups of sleeve sleeves (4) are fixedly connected through a connecting mechanism (7). The heating pipe welding auxiliary device comprises locking mechanisms, rotating mechanisms, cooling mechanisms and auxiliary welding mechanisms, the locking mechanisms comprise mounting seats (1), the two groups of mounting seats (1) are provided with adjusting grooves (201), the lower portion of the adjusting groove (201) is provided with a threaded hole (203), the adjusting groove (201) is movably provided with an adjusting nut (6), the lower portion of the adjusting nut (6) is fixedly provided with a bolt top rod (202), and the bolt top rod (202) is movably arranged in the threaded hole (203) through the threaded hole.

2. A heating and plumbing pipe welding auxiliary device according to claim 1, characterized in that: The connecting portions of the two groups of sleeve sleeves (4) are provided with flanges (204), the two groups of flanges (204) are provided with two groups of clamping grooves (207), and the two groups of clamping grooves (207) are arranged on the opposite sides.

3. A heating and plumbing pipe welding aid according to claim 2, characterized in that: The left clamping groove (207) is fixedly provided with a fixed shaft (205), the fixed shaft (205) is movably provided with a connecting seat (206), the connecting seat (206) is fixedly provided with a stud (208) by welding, and the stud (208) is movably provided with a nut (209) through the threaded hole.

4. A heating and plumbing pipe welding auxiliary device according to claim 3, characterized in that: The rotating mechanisms comprise sleeve sleeves (4), the middle positions of the connecting portions of the sleeve sleeves (4) and the mounting seats (1) are provided with arc-shaped grooves (210), the arc-shaped grooves are movably provided with steel balls (211), and the steel balls (211) are provided in multiple groups.

5. A heating and plumbing pipe welding aid according to claim 4, characterized in that: The cooling mechanisms comprise sleeve sleeves (4), the right sleeve sleeve (4) is provided with a gas injection pipe (212), and the left flange (204) of the gas injection pipe (212) is provided with an observation port (3).

6. A heating and plumbing pipe welding aid according to claim 5, characterized in that: The auxiliary welding mechanisms comprise auxiliary clamping devices (2), the auxiliary clamping devices (2) comprise fixed blocks (301), the fixed blocks (301) are fixedly arranged on the right sleeve sleeve (4) and the flange (204) by welding, the fixed blocks (301) are provided with through holes (307) penetrating the upper and lower portions, and the right side of the through hole (307) is provided with a limiting cavity (302).

7. A heating and plumbing pipe welding aid according to claim 6, characterized in that: The limiting cavity (302) is movably provided with a limiting block (303), the limiting block (303) is fixedly provided with a connecting rod (304), the top opening diameter of the limiting cavity (302) is smaller than the size of the limiting block (303), the upper surface of the limiting block (303) and the inner surface of the top portion of the limiting cavity (302) are fixedly provided with springs (305), the top portion of the connecting rod (304) is fixedly provided with a pressing block (306), the position corresponding to the through hole (307) of the pressing block (306) is provided with a notch (308), the notch (308) is fixedly provided with an electrode sheet (309), and the position corresponding to the observation port (3) of the through hole (307) is made of a high-temperature-resistant insulating material.

Images