Pipeline welding device for variable-frequency water supply pipeline

Abstract

The utility model relates to the technical field of pipeline welding, and discloses a pipeline welding device for a variable-frequency water supply pipeline, which comprises a base, a U-shaped seat is fixedly mounted on the base, the U-shaped seat can be divided into an upper part structure and a lower part structure, and clamping components are arranged on the upper part structure and the lower part structure of the U-shaped seat. According to the pipeline welding device for the variable-frequency water supply pipeline, the two clamping assemblies are oppositely arranged on the U-shaped bases and used for enabling the circle centers of the pipelines to coincide with the circle center where the arcs of the U-shaped bases are located, the axes of the circles where the arcs of the U-shaped bases are located among the multiple U-shaped bases on the base are consistent, and therefore the two pipelines limited by the structures are in a concentric and coaxial state; and at the moment, the two pipelines can be aligned and contacted and then welded, so that the coaxiality of the two pipelines after subsequent welding is finished is guaranteed, the deviation phenomenon is avoided, the welding quality of the whole device is improved, and the use requirement of the variable-frequency water supply pipeline is met.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a pipeline welding device for a variable frequency water supply pipeline. Background Art

[0002] The variable frequency water supply pipeline is a key part of the water supply system. It combines the advantages of variable frequency technology and water supply pipelines to achieve automatic adjustment of water supply pressure and stable supply.

[0003] Since the variable frequency water supply equipment adjusts the water supply volume by controlling the speed of the motor through the frequency converter, the quality of the welded joint will directly affect the stability and efficiency of the water supply system. Therefore, when welding the variable frequency water supply pipeline, it is necessary to ensure the welding quality between the pipelines. However, it is easy for the two pipelines to be difficult to align during welding, and the coaxiality between the two cannot be guaranteed, which will affect the actual welding quality. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a pipeline welding device for a variable frequency water supply pipeline, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: a pipe welding device for a variable frequency water supply pipe, comprising: a base, a U-shaped seat is fixedly installed on the base, the U-shaped seat can be divided into an upper and lower structure, the upper and lower structures of the U-shaped seat are both provided with clamping components, and the base is also movably provided with an auxiliary component; the clamping component comprises a clamping plate, a connecting tube, a fixing tube and a threaded rod, the clamping plate is fixedly installed on the end surface of the connecting tube, the connecting tube is slidably arranged on the fixing tube, the fixing tube is fixedly installed on the U-shaped seat, and the threaded rod is rotatably arranged on the U-shaped seat and is threadedly connected with the connecting tube.

[0006] Preferably, the auxiliary component includes a first connecting shaft, a first pulley group, a first reversing gear, a second reversing gear, a second pulley group, a worm wheel, a worm and two second connecting shafts, the first connecting shaft is rotatably set on the base, the first connecting shaft and the second reversing gear are transmission connected by the first pulley group, the first reversing gear and the second reversing gear are both rotatably set on the U-shaped seat, the second pulley group is movably set on the base, the worm wheel, worm and second connecting shaft are all rotatably set on the base, the worm wheel and the worm are threadedly connected, and the worm is fixedly connected to the second connecting shaft.

[0007] Preferably, the auxiliary component also includes a turntable, a third connecting shaft, a bevel gear set, a movable rod, a stop block, a connecting ring, a return spring and a square rod. The turntable is fixedly mounted on the end face of the movable rod, the third connecting shaft is rotatably arranged on the base, the bevel gear set is movably arranged on the base, the movable rod is movably arranged on the base, the stop block is fixedly mounted on the movable rod, the connecting ring is rotatably arranged on the stop block, the two ends of the return spring are respectively fixedly connected to the connecting ring and the base, and the square rod is fixedly mounted on the movable rod and plugged into the third connecting shaft.

[0008] Preferably, the first reversing gear is fixedly connected to the threaded rod on the upper half structure of the U-shaped seat, the worm gear is fixedly connected to the threaded rod on the lower half structure of the U-shaped seat, and the threaded rod on the lower half structure of the U-shaped seat is transmission-connected to the first connecting shaft via a second pulley set.

[0009] Preferably, the bevel gear set includes three bevel gears, wherein two bevel gears are fixedly mounted on the end surfaces of the two second connecting shafts, and another bevel gear is fixedly mounted on the third connecting shaft.

[0010] Preferably, a plurality of small protrusions are provided on the outer surface of the stop block, and the protrusions cooperate with the base.

[0011] Preferably, the first reversing gear and the second reversing gear have exactly the same size, shape and tooth profile, and the first reversing gear and the second reversing gear are meshed with each other.

[0012] Preferably, an annular heater is also provided on the base, and the annular heater is composed of two semicircular structures, one of which is fixedly connected to the base, and the other is movably connected to the semicircular structure fixed on the base.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The pipe welding device of the variable frequency water supply pipe sets two clamping components opposite to each other on the U-shaped seat to coincide the center of the pipe with the center of the circle where the U-shaped seat arc is located, and the axis lines of the circles where the arcs of the multiple U-shaped seats on the base are consistent. Therefore, the two pipes restricted by such structures are in a concentric and coaxial state. At this time, the two pipes can be aligned and contacted, and then welded, so as to ensure the coaxiality of the two pipes after the subsequent welding is completed, avoid the phenomenon of deviation, improve the quality of the overall device for welding, and meet the use requirements of the variable frequency water supply pipe.

[0015] 2. The pipe welding device for the variable frequency water supply pipe simplifies the operating steps of the overall device by setting auxiliary components, and can simultaneously adjust the states of multiple clamping components on multiple U-shaped seats, wherein the two clamping components on a single U-shaped seat move toward each other, thereby achieving the purpose of limiting the pipe clamping to the center position of the U-shaped seat, ensuring that the overall device can meet the requirements of variable frequency water supply pipe welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the partial structure of the U-shaped seat of the utility model;

[0018] Figure 3 It is a schematic cross-sectional view of the local structure of the base of the utility model;

[0019] Figure 4 It is a schematic cross-sectional view of another structure of the base of the utility model;

[0020] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0022] In the figure: 1. base; 2. clamping assembly; 21. clamping plate; 22. connecting cylinder; 23. fixing cylinder; 24. threaded rod; 3. U-shaped seat; 4. auxiliary assembly; 41. first connecting shaft; 42. first pulley group; 43. turntable; 44. first reversing gear; 45. second reversing gear; 46. second pulley group; 47. worm wheel; 48. worm; 49. second connecting shaft; 410. third connecting shaft; 411. bevel gear group; 412. movable rod; 413. stop block; 414. connecting ring; 415. reset spring; 416. square rod; 5. annular heater. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6, a pipe welding device for a variable frequency water supply pipe comprises: a base 1, a U-shaped seat 3 is fixedly installed on the base 1, the U-shaped seat 3 can be divided into an upper and lower structure, a clamping assembly 2 is arranged on the upper and lower structures of the U-shaped seat 3, an auxiliary assembly 4 is movably arranged on the base 1, and an annular heater 5 is also arranged on the base 1, the annular heater 5 is composed of two semicircular structures, one of which is fixedly connected to the base 1, and the other semicircular structure is movably connected to the semicircular structure fixed on the base 1, so as to improve the performance of the overall device and meet the actual welding use requirements, the clamping assembly 2 comprises a clamping plate 21, a connecting tube 22, a fixing tube 23 and a threaded rod 24, the clamping plate 21 is fixedly installed on the end surface of the connecting tube 22, the connecting tube 22 is slidably arranged on the fixing tube 23, the fixing tube 23 is fixedly installed on the U-shaped seat 3, and the threaded rod 24 is rotatably arranged on the U-shaped seat 3 and is threadedly connected with the connecting tube 22.

[0025] The auxiliary component 4 includes a first linkage shaft 41, a first pulley group 42, a first reversing gear 44, a second reversing gear 45, a second pulley group 46, a worm wheel 47, a worm 48 and two second linkage shafts 49. The first linkage shaft 41 is rotatably arranged on the base 1. The first linkage shaft 41 and the second reversing gear 45 are connected by the first pulley group 42. The first reversing gear 44 and the second reversing gear 45 are both rotatably arranged on the U-shaped seat 3. The first reversing gear 44 is fixedly connected to the threaded rod 24 located on the upper half of the U-shaped seat 3. The worm wheel 47 is connected to the threaded rod 24 located on the lower half of the U-shaped seat 3. The threaded rod 24 on the structure is fixedly connected, and the threaded rod 24 located on the lower half structure of the U-shaped seat 3 is connected to the first linkage shaft 41 through the second pulley set 46. The first reversing gear 44 and the second reversing gear 45 have exactly the same size, shape and tooth shape, and the first reversing gear 44 and the second reversing gear 45 are meshed with each other. The second pulley set 46 is movably arranged on the base 1. The worm wheel 47, the worm 48 and the second linkage shaft 49 are all rotatably arranged on the base 1. The worm wheel 47 is threadedly connected to the worm 48, and the worm 48 is fixedly connected to the second linkage shaft 49. The auxiliary component 4 The utility model also includes a rotating disk 43, a third linkage shaft 410, a bevel gear set 411, a movable rod 412, a stop block 413, a connecting ring 414, a return spring 415 and a square rod 416. The rotating disk 43 is fixedly mounted on the end surface of the movable rod 412, the third linkage shaft 410 is rotatably arranged on the base 1, and the bevel gear set 411 is movably arranged on the base 1. The bevel gear set 411 includes three bevel gears, two of which are fixedly mounted on the end surfaces of the two second linkage shafts 49, and another bevel gear is fixedly mounted on the third linkage shaft 410, so that each component in the overall device can have The movable rod 412 is movably arranged on the base 1, and the stop block 413 is fixedly installed on the movable rod 412. A plurality of small protrusions are arranged on the outer surface of the stop block 413, which cooperate with the base 1 to improve the stability of the overall device when no one is operating, thereby improving the stability of the overall device in clamping the pipeline. The connecting ring 414 is rotatably arranged on the stop block 413, and the two ends of the reset spring 415 are fixedly connected to the connecting ring 414 and the base 1 respectively. The square rod 416 is fixedly installed on the movable rod 412 and plugged with the third linkage shaft 410.

[0026] Working principle: multiple U-shaped seats 3 are fixed on the base 1, and the upper and lower surfaces of the inner side of a single U-shaped seat 3 are fixed with a fixing cylinder 23, and the connecting cylinder 22 slides on the fixing cylinder 23. The clamping plate 21 for clamping the pipe is fixed on the connecting cylinder 22, and the connecting cylinder 22 is also threadedly connected with the threaded rod 24 rotating on the U-shaped seat 3, so that the U-shaped seat 3 can be divided into two parts, the upper and lower parts. The threaded rod 24 located in the upper part of the U-shaped seat 3 fixes the first reversing gear 44, and the first reversing gear 44 is meshed with the second reversing gear 45 of the same size as itself, and the second reversing gear 45 is also rotatable on the U-shaped seat 3, and the second reversing gear 45 utilizes the first The pulley set 42 is transmission connected to the first connecting shaft 41 rotating on the base 1, and the threaded rod 24 located in the lower half structure of the U-shaped seat 3 is inserted into the base 1 and is transmission connected to the first connecting shaft 41 through the second pulley set 46. Therefore, when the two threaded rods 24 of the upper and lower structures of the U-shaped seat 3 rotate, the rotation directions are opposite, and the two connecting tubes 22 of the upper and lower structures of the U-shaped seat 3 will push the splint 21 fixedly connected thereto to slide toward each other, specifically, the splint 21 of the upper half structure of the U-shaped seat 3 slides downward, and the splint 21 of the lower half structure of the U-shaped seat 3 slides upward, so as to push the pipe on the splint 21 to the center position of the U-shaped seat 3.

[0027] During actual operation, the turntable 43 is pushed, and the movable rod 412 fixed on the turntable 43 and movably connected to the base 1 slides toward the inside of the base 1, and at the same time, the stop block 413 fixed on the movable rod 412 slides toward the internal cavity of the base 1. Although the connecting ring 414 is connected to the base 1 by the return spring 415, the stop block 413 is rotatable on the connecting ring 414, and the square rod 416 fixed on the movable rod 412 is also plugged into the third linkage shaft 410. Therefore, after the turntable 43 is rotated, the third linkage shaft 410 rotates synchronously, and then under the action of the bevel gear set 411 which contains multiple bevel gears that mesh with each other and are respectively fixedly connected to the third linkage shaft 410 and the second linkage shaft 49, the second linkage shaft 49 rotates as the third linkage shaft 410 rotates, and the second linkage shaft 49 rotates. A plurality of worms 48 are fixed on the linkage shaft 49, and the worms 48 are all threadedly connected with the corresponding worm wheels 47, and the worm wheels 47 are fixed on the end faces of the corresponding threaded rods 24 located on the lower half structure of the U-shaped seat 3. At this point, after rotating the turntable 43, the plurality of threaded rods 24 located on the lower half structure of the U-shaped seat 3 on the device rotate synchronously, driving the threaded rods 24 of the upper half structure of the U-shaped seat 3 to rotate, and the pipe to be welded is clamped and restricted to the central part of the U-shaped seat 3 by the clamping plate 21, wherein the arc surface of the clamping plate 21 in contact with the pipe is provided with movable balls to meet the user's fine adjustment of the pipe during actual welding. At the same time, the pipe passes through the annular heater 5 to preheat the pipe to avoid stress caused by a large temperature difference before and after welding, so as to improve the quality of the overall device during welding.

[0028] The outer surface of the stop block 413 is provided with a small protrusion for increasing friction, and the protrusion cooperates with the base 1, so when the stop block 413 contacts the base 1, the movable rod 412 can be restricted from rotating. At the same time, after the turntable 43 is released, the stop block 413 is pushed back to the position as shown in the figure under the action of the return spring 415. Figure 6 The initial state shown restricts the activity of the entire structure.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe welding device for variable frequency water supply pipes, characterized in that: include: A base (1), wherein a U-shaped base (3) is fixedly mounted on the base (1), wherein the U-shaped base (3) can be divided into an upper and lower structure, wherein the upper and lower structures of the U-shaped base (3) are both provided with a clamping assembly (2), and an auxiliary assembly (4) is also movably provided on the base (1); The clamping assembly (2) comprises a clamping plate (21), a connecting tube (22), a fixing tube (23) and a threaded rod (24); the clamping plate (21) is fixedly mounted on the end surface of the connecting tube (22); the connecting tube (22) is slidably mounted on the fixing tube (23); the fixing tube (23) is fixedly mounted on the U-shaped seat (3); and the threaded rod (24) is rotatably mounted on the U-shaped seat (3) and is threadably connected to the connecting tube (22).

2. A variable frequency water supply pipeline welding device according to claim 1, characterized in that: The auxiliary component (4) comprises a first linkage shaft (41), a first pulley group (42), a first reversing gear (44), a second reversing gear (45), a second pulley group (46), a worm wheel (47), a worm (48) and two second linkage shafts (49); the first linkage shaft (41) is rotatably arranged on the base (1); the first linkage shaft (41) and the second reversing gear (45) are transmission-connected via the first pulley group (42); the first reversing gear (44) and the second reversing gear (45) are both rotatably arranged on the U-shaped seat (3); the second pulley group (46) is movably arranged on the base (1); the worm wheel (47), the worm (48) and the second linkage shaft (49) are all rotatably arranged on the base (1); the worm wheel (47) and the worm (48) are threadedly transmission-connected; and the worm (48) and the second linkage shaft (49) are fixedly connected.

3. A pipe welding device for variable frequency water supply pipe according to claim 2, characterized in that: The auxiliary component (4) further comprises a rotating disk (43), a third linkage shaft (410), a bevel gear set (411), a movable rod (412), a stop block (413), a connecting ring (414), a return spring (415) and a square rod (416); the rotating disk (43) is fixedly mounted on the end surface of the movable rod (412); the third linkage shaft (410) is rotatably disposed on the base (1); and the bevel gear set (411) is movably disposed on the base (1). On the base (1), the movable rod (412) is movably arranged on the base (1), the stop block (413) is fixedly installed on the movable rod (412), the connecting ring (414) is rotatably arranged on the stop block (413), the two ends of the return spring (415) are respectively fixedly connected to the connecting ring (414) and the base (1), and the square rod (416) is fixedly installed on the movable rod (412) and plugged into the third linkage shaft (410).

4. A variable frequency water supply pipeline welding device according to claim 2, characterized in that: The first reversing gear (44) is fixedly connected to a threaded rod (24) located on the upper structure of the U-shaped seat (3), the worm gear (47) is fixedly connected to a threaded rod (24) located on the lower structure of the U-shaped seat (3), and the threaded rod (24) located on the lower structure of the U-shaped seat (3) is transmission-connected to the first linkage shaft (41) via a second pulley set (46).

5. The pipe welding device for variable frequency water supply pipe according to claim 3, characterized in that: The bevel gear set (411) comprises three bevel gears, two of which are fixedly mounted on the end surfaces of the two second linkage shafts (49), and another bevel gear is fixedly mounted on the third linkage shaft (410).

6. A variable frequency water supply pipeline welding device according to claim 3, characterized in that: A plurality of small protrusions are provided on the outer surface of the stop block (413), and the protrusions cooperate with the base (1).

7. A pipe welding device for variable frequency water supply pipe according to claim 3, characterized in that: The first reversing gear (44) and the second reversing gear (45) have exactly the same size, shape and tooth profile, and the first reversing gear (44) and the second reversing gear (45) are meshed with each other.

8. The pipe welding device for variable frequency water supply pipe according to claim 1, characterized in that: The base (1) is also provided with an annular heater (5), and the annular heater (5) is composed of two semicircular structures, one of which is fixedly connected to the base (1), and the other semicircular structure is movably connected to the semicircular structure fixed to the base (1).

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