Large and small head convenient to weld

Abstract

The utility model discloses a reducer convenient to weld, which relates to the technical field of reducers and comprises a reducer body, a second pipeline, a first pipeline, an anti-deflection mechanism and a stabilizing mechanism. The anti-deflection mechanism comprises a first sleeve fixed to the inner wall of the large-opening end of the reducer body and a second sleeve fixed to the inner wall of the small-opening end of the reducer body, one end of the first sleeve penetrates into the first pipeline, and one end of the second sleeve penetrates into the second pipeline; through the arrangement of the anti-deflection mechanism, when the reducer main body is placed between the first pipeline and the second pipeline, the first sleeve and the second sleeve can be correspondingly inserted into the first pipeline and the second pipeline respectively, and the first sleeve and the second sleeve are matched to position the reducer main body; the two ends of the reducer body are aligned and attached to the first pipeline and the second pipeline respectively, so that the phenomenon that the reducer body deflects between the first pipeline and the second pipeline, and the welding quality is affected can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, and specifically relates to a reducer convenient for welding. Background Art

[0002] Reducers are used for connecting pipes with two different pipe diameters, and are divided into concentric reducers and eccentric reducers. Referring to pipe fittings, the materials of reducing pipes include stainless steel reducing pipes, alloy steel, carbon steel reducing pipes, etc.

[0003] When welding a reducer to a pipeline, it is often necessary to manually align and fit the end of the reducer with the end of the pipeline. Due to manual operation, it is inevitable that the end of the reducer will be skewed with the end of the pipeline, which will seriously reduce the welding quality and thus affect the normal use of the reducer. Summary of the Utility Model

[0004] To solve the above technical problems, a reducer convenient for welding is provided, which solves the problem that when welding a reducer to a pipeline in the prior art, it is often necessary to manually align and fit the end of the reducer with the end of the pipeline. Due to manual operation, it is inevitable that the end of the reducer will be skewed with the end of the pipeline, which will seriously reduce the welding quality.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a reducer convenient for welding, including a reducer main body, a second pipeline arranged at one end of the reducer main body, and a first pipeline arranged at the other end of the reducer main body, further including an anti-skew mechanism and a stabilizing mechanism for improving the welding quality of the reducer main body;

[0006] The anti-skew mechanism includes a first sleeve fixed on the inner wall of the large end of the reducer main body and a second sleeve fixed on the inner wall of the small end of the reducer main body. One end of the first sleeve penetrates into the first pipeline, and one end of the second sleeve penetrates into the second pipeline;

[0007] The stabilizing mechanism includes two symmetrically arranged movable grooves opened on the pipe body of the second sleeve, a pressing plate slidably arranged in the movable groove, and a rubber pad glued to the outer arc surface of the pressing plate. An extrusion component for acting on the sliding of the pressing plate is arranged in the second sleeve.

[0008] Preferably, the extrusion component includes two symmetrically and vertically arranged push-pull rods in the second sleeve and a fixing piece tightly sleeved on the rod body of the push-pull rod. One end of the push-pull rod penetrates into the movable groove and is fixedly connected to the pressing plate. A return spring is also sleeved on the rod body of the push-pull rod. One end of the return spring is fixedly connected to the fixing piece, and the other end of the return spring is fixedly connected to the inner wall of the second sleeve.

[0009] Preferably, the extrusion component further includes a vertical frame vertically fixed inside the open end on one side of the second sleeve, a screw rod vertically and rotatably arranged on the vertical frame, and a nut seat threadedly connected to the screw rod in an isosceles trapezoid shape. The other end of the push rod is elliptical and abuts against the hypotenuse of the nut seat.

[0010] Preferably, the extrusion component further includes a vertical frame vertically fixed inside the open end on one side of the second sleeve, a screw rod vertically and rotatably arranged on the vertical frame, and a nut seat threadedly connected to the screw rod in an isosceles trapezoid shape. The other end of the push rod is elliptical and abuts against the hypotenuse of the nut seat.

[0011] Preferably, two telescopic rods are symmetrically fixed between the nut seat and the vertical frame, and the screw rod is located between the two telescopic rods.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] (1) Through the setting of the anti-deviation mechanism, when placing the reducing head body between the first pipe and the second pipe, the first sleeve and the second sleeve can be respectively inserted into the first pipe and the second pipe. The first sleeve and the second sleeve cooperate to position the reducing head body, so that the two ends of the reducing head body are respectively aligned and attached to the first pipe and the second pipe. In this way, it can effectively prevent the reducing head body from being deflected between the first pipe and the second pipe, affecting the welding quality.

[0014] (2) Through the setting of the stabilizing mechanism, after using the first sleeve and the second sleeve to accurately position the reducing head body between the reducing head body and the first pipe, the extrusion component is used to simultaneously apply a thrust to the extrusion plates in the two movable grooves. In this way, the extrusion plates slide toward the inner wall side of the second pipe under the force until the rubber pads are closely attached to the inner wall of the second pipe. In this way, a fixing effect can be exerted on the second sleeve, enhancing the firmness of the reducing head body between the first pipe and the second pipe, so as to prevent the reducing head body from deflecting during welding and reducing the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of the present utility model;

[0017] Figure 3 is a schematic diagram of a partial structure of the present utility model.

[0018] The reference numerals in the figures are:

[0019] 1. Reducing head body; 2. First pipe; 3. Second pipe; 4. First sleeve; 5. Second sleeve; 6. Movable groove; 7. Extrusion plate; 8. Rubber pad; 9. Push-pull rod; 10. Vertical frame; 11. Screw; 12. Nut seat; 13. Fixed piece; 14. Return spring; 15. Telescopic rod; 16. Control rod; 17. First bevel gear; 18. Second bevel gear. Detailed implementation manner

[0020] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0021] Embodiment 1

[0022] Referring to Figures 1-3 As shown, a reducing head convenient for welding includes a reducing head body 1, a second pipe 3 provided at one end of the reducing head body 1, and a first pipe 2 provided at the other end of the reducing head body 1;

[0023] During the welding operation, the reducing head body 1 can be grafted between the first pipe 2 and the second pipe 3 in advance, so that the small-diameter end of the reducing head body 1 is aligned and attached to the end of the second pipe 3, and the large-diameter end of the reducing head body 1 is aligned and attached to the end of the first pipe 2. Then, a welding torch is used to perform welding treatment on the joint parts of the reducing head body 1 with the first pipe 2 and the second pipe 3, and the welding and fixing of the reducing head body 1 are completed.

[0024] However, in reality, due to human operation, it is inevitable that the ends of the reducing head will be skewed with the ends of the pipes, which will seriously reduce the welding quality and thus affect the normal use of the reducing head.

[0025] In view of this, referring to Figure 2 As shown, it further includes an anti-skew mechanism for improving the welding quality of the reducing head body 1;

[0026] The anti-skew mechanism includes a first sleeve 4 fixed to the inner wall of the large-diameter end of the reducing head body 1 and a second sleeve 5 fixed to the inner wall of the small-diameter end of the reducing head body 1. One end of the first sleeve 4 penetrates into the first pipe 2, and one end of the second sleeve 5 penetrates into the second pipe 3;

[0027] Through the setting of the anti-skew mechanism, when placing the reducing head body 1 between the first pipe 2 and the second pipe 3, the first sleeve 4 and the second sleeve 5 can be respectively inserted into the first pipe 2 and the second pipe 3. The first sleeve 4 and the second sleeve 5 cooperate to position the reducing head body 1, so that the two ends of the reducing head body 1 are respectively aligned and attached to the first pipe 2 and the second pipe 3, thereby effectively preventing the reducing head body 1 from being skewed between the first pipe 2 and the second pipe 3 and affecting the welding quality.

[0028] Example 2

[0029] Refer to Figure 2 and Figure 3 As shown, it should be noted that a stabilizing mechanism is also included;

[0030] The stabilizing mechanism includes two symmetrically arranged movable grooves 6 on the body of the second sleeve 5, a pressing plate 7 slidably arranged in the movable groove 6, and a rubber pad 8 glued to the outer arc surface of the pressing plate 7. A pressing member for causing the pressing plate 7 to slide is arranged in the second sleeve 5;

[0031] Through the setting of the stabilizing mechanism, after the reducing head body 1 is accurately positioned between the reducing head body 1 and the first pipe 2 by using the first sleeve 4 and the second sleeve 5, the pressing member is used to simultaneously apply a thrust to the pressing plates 7 in the two movable grooves 6. In this way, the pressing plate 7 is forced to slide towards the inner wall side of the second pipe 3 until the rubber pad 8 closely adheres to the inner wall of the second pipe 3. In this way, the second sleeve 5 can be fixed, enhancing the firmness of the reducing head body 1 between the first pipe 2 and the second pipe 3, so as to prevent the reducing head body 1 from deflecting during welding and reducing the welding effect.

[0032] Furthermore, refer to Figure 3 As shown, it should be noted that the pressing member includes two symmetrically arranged vertically push-pull rods 9 in the second sleeve 5 and fixing pieces 13 tightly sleeved on the rod bodies of the push-pull rods 9. One end of the push-pull rod 9 penetrates into the movable groove 6 and is fixedly connected to the pressing plate 7. A return spring 14 is also sleeved on the rod body of the push-pull rod 9. One end of the return spring 14 is fixedly connected to the fixing piece 13, and the other end of the return spring 14 is fixedly connected to the inner wall of the second sleeve 5;

[0033] The pressing member further includes a vertical frame 10 vertically fixed in the open side of one side of the second sleeve 5, a screw rod 11 vertically rotatably arranged on the vertical frame 10, and a nut seat 12 threadedly connected to the rod body of the screw rod 11 in an isosceles trapezoid shape. The other end of the push-pull rod 9 is elliptical and abuts against the hypotenuse of the nut seat 12;

[0034] By controlling the rotation of the screw rod 11, the nut seat 12 can slide along the rod body of the screw rod 11 by the thread structure during the rotation of the screw rod 11, causing the hypotenuse of the nut seat 12 to abut against the push-pull rod 9 and applying a squeezing force to the push-pull rod 9. In this way, the two push-pull rods 9 are simultaneously forced to slide in the opposite direction and push the pressing plate 7, causing the rubber pad 8 to fit against the inner wall of the second pipe 3;

[0035] When the push-pull rod 9 slides therein, the fixed piece 13 can synchronously compress the return spring 14, causing the return spring 14 to deform. In this way, the screw rod 11 rotates reversely, and the nut seat 12 can slide reversely along the rod body of the screw rod 11 during the reverse rotation of the screw rod 11, reducing the extrusion on the push-pull rod 9. Then the fixed piece 13 can reset the whole push-pull rod 9, extrusion plate 7 and rubber pad 8 under the elastic force of the return spring 14.

[0036] Further, referring to Figure 3 As shown, it should be noted that a control rod 16 is vertically arranged at the end of the reducing head body 1. One end of the control rod 16 rotates vertically downward and penetrates into the second sleeve 5 and is tightly sleeved with a first bevel gear 17. The end of the screw rod 11 is tightly sleeved with a second bevel gear 18 meshing with the first bevel gear 17.

[0037] By rotating the control rod 16, the first bevel gear 17 can mesh with the second bevel gear 18 during rotation, providing a rotational force for the screw rod 11.

[0038] Further, referring to Figure 3 As shown, it should be noted that two telescopic rods 15 are symmetrically fixed between the nut seat 12 and the vertical frame 10, and the screw rod 11 is located between the two telescopic rods 15.

[0039] Through the arrangement of the telescopic rods 15, during the sliding process of the nut seat 12, the telescopic rods 15 can synchronously expand and contract, effectively guiding the nut seat 12 and limiting its moving trajectory.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A reducing pipe convenient for welding, comprising a reducing pipe main body (1), a second pipe (3) arranged at one end of the reducing pipe main body (1), and a first pipe (2) arranged at the other end of the reducing pipe main body (1), characterized in that: It further includes an anti-deviation mechanism and a stabilizing mechanism for improving the welding quality of the reducing body (1). The anti-deviation mechanism includes a first sleeve (4) fixed to the inner wall of the large end of the reducing body (1) and a second sleeve (5) fixed to the inner wall of the small end of the reducing body (1). One end of the first sleeve (4) penetrates into the first pipe (2), and one end of the second sleeve (5) penetrates into the second pipe (3). The stabilizing mechanism includes two symmetrically arranged movable grooves (6) opened on the pipe body of the second sleeve (5), a pressing plate (7) slidably arranged in the movable groove (6), and a rubber pad (8) glued to the outer arc surface of the pressing plate (7). An extrusion component for acting on the sliding of the pressing plate (7) is arranged in the second sleeve (5).

2. The reducing pipe convenient for welding according to claim 1, wherein, The extrusion component includes two symmetrically and vertically arranged push-pull rods (9) in the second sleeve (5) and a fixed piece (13) tightly sleeved on the rod body of the push-pull rod (9). One end of the push-pull rod (9) penetrates into the movable groove (6) and is fixedly connected to the pressing plate (7). A return spring (14) is also sleeved on the rod body of the push-pull rod (9). One end of the return spring (14) is fixedly connected to the fixed piece (13), and the other end of the return spring (14) is fixedly connected to the inner wall of the second sleeve (5).

3. The reducing pipe convenient for welding according to claim 2, characterized in that The extrusion component further includes a vertical frame (10) vertically fixed in the open side of one side of the second sleeve (5), a screw rod (11) vertically and rotatably arranged on the vertical frame (10), and a nut seat (12) in an isosceles trapezoid shape threadedly connected to the rod body of the screw rod (11). The other end of the push-pull rod (9) is elliptical and abuts against the hypotenuse of the nut seat (12).

4. The reducing pipe convenient for welding according to claim 3, characterized in that, A control rod (16) is vertically arranged on the end of the reducing body (1). One end of the control rod (16) vertically rotates downward and penetrates into the second sleeve (5) and is tightly sleeved with a first bevel gear (17). The end of the screw rod (11) is tightly sleeved with a second bevel gear (18) meshing with the first bevel gear (17).

5. The reducing pipe convenient for welding according to claim 3, wherein Two telescopic rods (15) are symmetrically fixed between the nut seat (12) and the vertical frame (10). The screw rod (11) is located between the two telescopic rods (15).

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