A muffler mounting ear welding jig

Abstract

The utility model provides a muffler mounting ear welding jig, including upper ring, the upper end of upper ring is welded with upper pasting ring, the outer periphery of upper ring is welded with a plurality of convex parts, the lower wall of convex part is welded with screw rod, the lower end of screw rod is sleeved with limit ring, the lower end of screw rod is connected with a pair of fixed nut through screw thread, and fixed nut is located on the upside and downside of limit ring, the downside of limit ring is movably equipped with outer top plate, and the inboard end of outer top plate is shaped with the plug -in board. The utility model discloses a upper ring is set up and is contacted with the outer periphery of pipe fitting, so the close -fitting effect between pipe fitting and mounting ear welding can be ensured, and the levelness of mounting ear can be ensured through the upper pasting ring abutting on the upper end ring, and the position of limit ring on screw rod is adjusted conveniently through the setting of upper pasting ring, so the height precision of mounting ear after welding can be ensured. Secondly, every mounting ear is fixed on the outer top plate and plug -in board that are evenly distributed on the limit ring, so the precision in orientation of mounting ear after welding can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of muffler processing technology, and in particular to a welding fixture for muffler mounting ears. Background Technology

[0002] Silencers are installed at the outlet or inlet of gas pipelines to reduce the noise generated when gas passes through. They are customized products, meaning their shape and size vary significantly depending on the application and the specific pipeline used. For example... Figure 1 The device housed within the welding fixture is a silencer structure. The silencer includes a tube body 1, with an upper ring welded to its upper end. An upper extension tube 10 is welded to the upper ring, and an upper flange 12 is welded to the upper end of the upper extension tube 10. Multiple concave mounting ears are welded to the outer circumference of the tube body 1. Since these mounting ears are used for installing the silencer, their welding precision directly affects the overall quality of the silencer and the ease of installation during construction. During welding, it is necessary to ensure accuracy in orientation, height, and levelness, which cannot be guaranteed by currently marking the welding positions. Utility Model Content

[0003] This utility model provides a welding fixture for muffler mounting ears to solve the shortcomings of the prior art, such as the low welding accuracy of the mounting ears, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A welding fixture for mounting ears of a muffler includes an upper ring, an upper abutment ring welded to the upper end of the upper ring, multiple protrusions welded to the outer periphery of the upper ring, a lead screw welded to the lower wall of the protrusions, a limiting ring sleeved on the lower end of the lead screw, and a pair of fixing nuts connected to the lower end of the lead screw by threads. The fixing nuts are located on the upper and lower sides of the limiting ring, and an outer top plate is movably provided on the lower side of the limiting ring. An insert plate is formed on the inner end of the outer top plate.

[0005] Furthermore, four external convex plates are formed in a circumferential array on the outer periphery of the limiting ring. A pair of waist-shaped holes are provided on the external convex plates. Movable screws are movably installed in the waist-shaped holes. The lower end of each pair of movable screws is threaded to the outer top plate, and the upper end of each pair of movable screws is threaded to the upper moving plate. An inner top vertical plate is vertically welded to the upper moving plate, and a U-shaped groove is formed with an opening at the upper end of the inner top vertical plate. A rotating convex plate is welded to the outer end of the outer convex plate. A pair of inner top rotating plates are provided at the upper end of the rotating convex plate via a rotating shaft. An inner top rod is provided at the inner end of the inner top rotating plate. The outer periphery of the inner top rod abuts against the inner wall of the U-shaped groove. An end post is welded to the outer end of the inner top rotating plate. A handle rod is connected to the end post by a thread.

[0006] Furthermore, the axial direction of the handle is perpendicular to the length direction of the inner top rotating plate.

[0007] Furthermore, a pair of transverse holes are provided on the inner side of the inner top rotating plate, and a limiting rod is inserted through the transverse holes. A limiting nut is provided at both ends of the limiting rod. The limiting nut is located on the outer side of the inner top rotating plate. A limiting inner plate is sleeved on the limiting rod. A pair of limiting inserts are provided on the limiting inner plate. The limiting inserts are inserted into the inner wall of the upper moving plate.

[0008] The advantages of the above technical solution are: This invention features an upper ring that abuts against the outer circumference of the pipe fitting, ensuring a tight fit between the mounting ear and the fitting during welding. An upper abutment ring abutting against the upper ring ensures the horizontality of the mounting ear, and the upper abutment ring also facilitates adjustment of the position of the limiting ring on the screw, thus ensuring the height accuracy of the mounting ear after welding. Furthermore, each mounting ear is fixed to an outer top plate and an insert plate evenly distributed on the limiting ring, ensuring the directional accuracy of the mounting ear after welding. Attached Figure Description

[0009] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0010] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0011] Figure 2 A magnified view of point A is shown.

[0012] Figure 3 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0013] Figure 4 A magnified view of point B is shown. Detailed Implementation

[0014] like Figures 1-4 As shown, a welding fixture for mounting ears of a muffler includes an upper ring 2. An upper abutment ring 20 is welded to the upper end of the upper ring 2. Multiple protrusions 21 are welded to the outer periphery of the upper ring 2. A lead screw 22 is welded to the lower wall of the protrusions 21. A limiting ring 3 is sleeved on the lower end of the lead screw 22. A pair of fixing nuts 23 are threaded to the lower end of the lead screw 22. The fixing nuts 23 are located on the upper and lower sides of the limiting ring 3. An outer top plate 44 is movably provided on the lower side of the limiting ring 3. An insert plate 45 is formed on the inner end of the outer top plate 44.

[0015] Four external protruding plates 30 are formed in a circular array on the outer periphery of the limiting ring 3. A pair of oblong holes 31 are provided on the external protruding plates 30. Movable screws 32 are movably installed in the oblong holes 31. The lower end of each pair of movable screws 32 is threaded to the outer top plate 44. The upper end of each pair of movable screws 32 is threaded to the upper moving plate 330. An inner top vertical plate 33 is vertically welded on the upper moving plate 330. A U-shaped groove 34 is formed with an opening at the upper end of the inner top vertical plate 33. A rotating protruding plate 35 is welded to the outer end of the external protruding plate 30. A pair of inner top rotating plates 37 are rotatably installed at the upper end of the rotating plate 35 via a rotating shaft 36. An inner top rod 40 is rotatably installed at the inner end of the inner top rotating plate 37. The outer periphery of the inner top rod 40 abuts against the inner wall of the U-shaped groove 34. An end post 38 is welded to the outer end of the inner top rotating plate 37. A handle 39 is threadedly connected to the end post 38.

[0016] In some embodiments, the axial direction of the handle 39 is perpendicular to the longitudinal direction of the inner top rotating plate 37 to facilitate rotation of the inner top rotating plate 37.

[0017] In some embodiments, a pair of transverse holes 41 are provided on the inner side of the inner top rotating plate 37. A limiting rod 42 is inserted through the transverse holes 41. A limiting nut is provided at both ends of the limiting rod 42. The limiting nut is located on the outer side of the inner top rotating plate 37. A limiting inner plate 43 is sleeved on the limiting rod 42. A pair of limiting inserts are provided on the limiting inner plate 43. The limiting inserts are inserted into the inner wall of the upper moving plate 330. The rotation of the inner top rotating plate 37 can be locked by the limiting inserts.

[0018] When installing and welding ear 13, first position the muffler as follows: Figure 1 The position shown is such that the upper extension tube 10 of the muffler is facing upwards after placement.

[0019] Then the operator puts the upper ring 2 on the upper end of the pipe fitting 1, and makes the lower wall of the upper ring 20 abut against the upper wall of the upper ring. In order to verify and adjust the level of the upper ring 20 and the limiting ring 3 by using a spirit level, a shim can be placed under the upper ring 20 during the adjustment.

[0020] Then, the height of the limiting ring 3 is adjusted according to the specific welding height of the mounting ear 13, and the height of the limiting ring 3 is locked by each pair of fixing nuts 23 after adjustment.

[0021] Next, the operator places the upper end of the mounting ear 13 against the lower wall of the limiting ring 3, and rotates the inner top rotating plate 37 downward by using the handle 39. This causes the inner push rod 40 on it to act on the inner wall of the U-shaped groove 34. When the inner push rod 40 rotates around the rotating shaft 36, it pushes the upper moving plate 330, the outer top plate 44 and the insert plate 45 to move inward, so that the inner wall of the outer top plate 44 abuts against the outer end of the mounting ear 13, and the upper wall of the insert plate 45 limits the lower wall of the horizontal section of the mounting ear 13. After the limit is set, the inner top rotating plate 37 is in a horizontal position. Then, the limiting inner plate 43 is moved outward so that the limiting insert rod on it is inserted into the inner wall of the upper moving plate 330. This prevents the inner top rotating plate 37 from rotating. Then, the welding operation of the mounting ear 13 and the pipe fitting 1 is performed. After the welding is completed, the welding fixture is removed.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A welding fixture for a muffler mounting ear, characterized in that, The upper ring (2) is welded to the upper end of the upper ring (2), and multiple protrusions (21) are welded to the outer periphery of the upper ring (2). A screw rod (22) is welded to the lower wall of the protrusion (21). A limiting ring (3) is sleeved on the lower end of the screw rod (22). A pair of fixing nuts (23) are connected to the lower end of the screw rod (22) by thread. The fixing nuts (23) are located on the upper and lower sides of the limiting ring (3). An outer top plate (44) is movably provided on the lower side of the limiting ring (3). An insert plate (45) is formed on the inner end of the outer top plate (44).

2. The silencer mounting ear welding fixture according to claim 1, characterized in that, The outer periphery of the limiting ring (3) has four outer protruding plates (30) arranged in a circular array. The outer protruding plates (30) have a pair of waist-shaped holes (31). Movable screws (32) are installed in the waist-shaped holes (31). The lower end of each pair of movable screws (32) is connected to the outer top plate (44) by a thread. The upper end of each pair of movable screws (32) is connected to the upper moving plate (330) by a thread. The upper moving plate (330) has an inner top vertical plate (33) welded vertically. The upper end of the inner top vertical plate (33) has an opening formed by a U-shaped groove (34). A rotating convex plate (35) is welded to the outer end of the outer convex plate (30). A pair of inner top rotating plates (37) are provided at the upper end of the rotating convex plate (35) via a rotating shaft (36). An inner top rod (40) is provided at the inner end of the inner top rotating plate (37). The outer periphery of the inner top rod (40) abuts against the inner wall of the U-shaped groove (34). An end post (38) is welded to the outer end of the inner top rotating plate (37). A handle rod (39) is connected to the end post (38) by a thread.

3. The silencer mounting ear welding fixture according to claim 2, characterized in that, The axial direction of the handle (39) is perpendicular to the length direction of the inner top rotating plate (37).

4. The silencer mounting ear welding fixture according to claim 1, characterized in that, A pair of transverse holes (41) are provided on the inner side of the inner top rotating plate (37). A limiting rod (42) is inserted through the transverse hole (41). A limiting nut is provided at both ends of the limiting rod (42). The limiting nut is located on the outer side of the inner top rotating plate (37). A limiting inner plate (43) is sleeved on the limiting rod (42). A pair of limiting inserts are provided on the limiting inner plate (43). The limiting inserts are inserted into the inner wall of the upper moving plate (330).

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