Pipe welding fixture

Abstract

This utility model belongs to the field of pipeline equipment technology, specifically relating to a pipeline welding fixture, including a column fixedly installed on the top of a base plate. A three-pronged plate is fixedly connected to the outer wall of the top of the column. An adjusting screw is threadedly connected to the middle fork of the three-pronged plate. A pipe rack is rotatably connected to the bottom of the adjusting screw. Two suction pipes are provided below the pipe rack. Multiple main air intakes are provided on the opposite sides of the suction pipes. The ends of the suction pipes are connected to a diversion pipe. A suction and purification mechanism is installed on the top of the base plate to provide suction airflow to the diversion pipe. This utility model allows the upper clamping plate, the arc-shaped plate, and the suction pipes to descend together by rotating the adjusting screw. While the connecting rod clamps the pipeline, the suction pipes suction and purify the dust and harmful gases generated during welding at the pipeline joint, reducing dust pollution in the working environment, protecting the health of workers, and expanding the functionality of traditional tooling fixtures.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline equipment technology, and specifically relates to a pipeline welding fixture. Background Technology

[0002] Pipeline welding is a common engineering construction method used to connect different pipeline components to ensure the normal operation of the pipeline system. Pipeline welding is widely used in fields such as construction, chemical industry, petroleum, and natural gas. Pipeline welding fixtures refer to auxiliary devices (such as clamps and positioners) used for pipeline welding. Their core function is to improve welding accuracy and efficiency by clamping and adjusting the position of the pipeline, ensuring the stability of the butt weld between two pipelines.

[0003] In the existing technology, two pipes are welded together with the assistance of tooling fixtures. However, welding produces metal dust and harmful gases, which can cause respiratory damage and lung diseases if inhaled by the human body over a long period of time. The tooling fixtures only have a clamping function and cannot extract and remove the metal dust and harmful gases generated during welding, so their function is relatively simple. Utility Model Content

[0004] The purpose of this utility model is to provide a pipe welding fixture. By rotating the adjusting screw, the upper clamping plate, the arc plate, and the suction pipe can be lowered together. While the connecting rod clamps the pipe, the suction pipe sucks up and purifies the dust and harmful gases generated during welding at the pipe joint, reducing dust pollution in the working environment, protecting the health of workers, and expanding the functionality of traditional tooling fixtures.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A pipe welding fixture includes a column fixedly installed on the top of a base plate, and a three-pronged plate is fixedly connected to the outer wall of the top of the column.

[0007] An adjusting screw is threadedly connected to the middle fork of the three-pronged plate. A pipe frame is rotatably connected to the bottom of the adjusting screw. Two suction pipes are provided below the pipe frame. Multiple main air intakes are provided on the opposite sides of the suction pipes.

[0008] The ends of the suction tubes are connected to a diversion tube, and a suction purification mechanism is installed on the top of the substrate to provide suction airflow to the diversion tube.

[0009] The suction tube is an arc-shaped strip.

[0010] The pipe rack includes a connecting plate that is rotatably connected to the bottom of the adjusting screw, and the bottom ends of the connecting plate are fixedly connected with arc-shaped plates in a mirror-symmetrical manner;

[0011] The suction tubes are slidably disposed on the opposite sidewalls of the two arc-shaped plates, and the suction tubes are distributed in a mirror symmetrical manner with the diversion tube as the axis.

[0012] The base plate is provided with two lower clamping plates at the top. The edge forks of the three-pronged plate are provided with limiting rods. The bottom end of the limiting rod is provided with an upper clamping plate corresponding to the lower clamping plate. The lower clamping plate and the upper clamping plate are V-shaped and their openings are opposite each other for clamping pipe fittings.

[0013] The arc-shaped plate is disposed between the two upper clamping plates;

[0014] A connecting rod is fixedly connected to the top of the limiting rod, and one end of the connecting rod is fixedly connected to the connecting plate.

[0015] The suction purification mechanism includes a fan fixedly installed on one side of the column, and a filter box fixedly installed on the other side of the column;

[0016] The fan is connected to the filter box, and the air duct is fixedly installed on the side wall of the column.

[0017] One end of the duct is fixedly connected to the filter box, and the other end passes through the three-pronged plate and is fixedly connected to the diversion pipe.

[0018] A sliding rod is fixedly connected to the side of the suction tube near the arc plate;

[0019] The side of the arc-shaped plate is provided with a sliding groove for the slide rod to be inserted, and a limiting groove is provided in the sliding groove for the slide rod to be inserted and slid.

[0020] The inner wall of the sliding groove is fixedly connected with multiple protrusions at equal intervals, and one end of the sliding rod is fixedly connected with an elastic ball for contact friction braking with the protrusions.

[0021] The curved plate has through holes at both ends.

[0022] The suction pipe has symmetrical secondary air inlets on its sidewalls and on both sides of the slide rod, which are used to provide suction airflow to the sliding groove.

[0023] The height of the contact point between the upper clamping plate and the pipe fitting is lower than the height of the arc-shaped plate on the same vertical plane.

[0024] The technical effects achieved by this utility model are as follows: by rotating the adjusting screw, the upper clamping plate, the arc plate, and the suction pipe can be lowered together. While the connecting rod clamps the pipe, the suction pipe sucks up and purifies the dust and harmful gases generated during welding at the pipe joint, reducing dust pollution in the working environment, protecting the health of workers, and expanding the functionality of traditional tooling fixtures. Attached Figure Description

[0025] Figure 1This is an overall view of the pipe welding fixture provided in an embodiment of this utility model;

[0026] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 This is a structural back view of the pipe welding fixture provided in an embodiment of this utility model;

[0028] Figure 4 This is a structural separation diagram of the arc-shaped plate and suction tube provided in the embodiment of this utility model;

[0029] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0030] Figure 6 This is a partial structural diagram of the sliding groove provided in an embodiment of this utility model.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Column; 101. Tripod plate; 102. Adjusting screw; 103. Connecting plate; 104. Arc plate; 105. Suction pipe; 106. Main air intake; 107. Secondary air intake; 108. Slide rod; 109. Elastic ball; 110. Diverter pipe; 111. Sliding groove; 112. Limiting groove; 113. Protrusion; 114. Leakage hole; 2. Base plate; 201. Lower clamping plate; 202. Limiting rod; 203. Upper clamping plate; 204. Connecting rod; 205. Fan; 206. Filter box; 207. Air duct. Detailed Implementation

[0033] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0034] like Figures 1-4As shown, a pipe welding fixture includes a column 1 fixedly installed on the top of a base plate 2. A three-pronged plate 101 is fixedly connected to the outer wall of the top of the column 1. An adjusting screw 102 is threadedly connected to the middle fork of the three-pronged plate 101. Two lower clamping plates 201 are provided on the top of the base plate 2. A limiting rod 202 is provided on the edge fork of the three-pronged plate 101. An upper clamping plate 203 is provided at the bottom of the limiting rod 202 corresponding to the lower clamping plate 201. The lower clamping plate 201 and the upper clamping plate 203 are V-shaped and their openings are opposite each other for clamping pipe fittings. An arc plate 104 is provided between the two upper clamping plates 203. The height of the upper clamping plate 203 at the line contact position with the pipe fitting is lower than the height of the arc plate 104 on the same vertical plane. A connecting rod 204 is fixedly connected to the top of the limiting rod 202. One end of the connecting rod 204 is fixedly connected to the connecting plate 103.

[0035] The ends of the suction pipe 105 are connected to the diversion pipe 110. The pipe frame includes a connecting plate 103 that is rotatably connected to the bottom of the adjusting screw 102. The bottom ends of the connecting plate 103 are fixedly connected to the arc-shaped plates 104 in a mirror-symmetrical manner. The suction pipe 105 is an arc-shaped strip. The suction pipe 105 is slidably disposed on the opposite side walls of the two arc-shaped plates 104. The suction pipe 105 is distributed in a mirror-symmetrical manner with the diversion pipe 110 as the axis. The bottom of the adjusting screw 102 is rotatably connected to the pipe frame. Two suction pipes 105 are provided below the pipe frame. Multiple main air intakes 106 are provided on the opposite sides of the suction pipes 105.

[0036] A suction purification mechanism is installed on the top of the substrate 2 to provide suction airflow to the diversion pipe 110. The suction purification mechanism includes a fan 205 fixedly installed on one side of the column 1, a filter box 206 fixedly installed on the other side of the column 1, the fan 205 and the filter box 206 are connected, and an air duct 207 is fixedly installed on the side wall of the column 1. One end of the air duct 207 is fixedly connected to the filter box 206, and the other end passes through the three-pronged plate 101 and is fixedly connected to the diversion pipe 110.

[0037] According to the above structure, the fan 205 generates negative pressure when it starts. External airflow is drawn into the suction pipe 105 through the main air intake 106. The arc-shaped strip of the suction pipe 105 is adapted to the curvature distribution of the pipe fittings, which is conducive to drawing airflow close to the pipe fittings. Under the same suction force, the number of air intakes can be reduced, the airflow velocity can be increased, and the dispersion of dust and harmful gases can be reduced. The airflow is then transported to the air duct 207 through the diversion pipe 110 and filtered by the filter element inside the filter box 206 to remove harmful gases and impurities. The air duct 207 passes through the tri-fork plate 101 upwards and then downwards again through the tri-fork plate 101. It extends at the bottom of the tri-fork plate 101 and connects with the diversion pipe 110. This extension section needs to be provided with a certain redundant length so that the suction pipe 105 can provide sufficient length for adaptation when sliding.

[0038] Furthermore, the two pipes are placed on the two lower clamping plates 201 respectively. By rotating the adjusting screw 102, the connecting plate 103 is driven to descend. The connecting plate 103 drives the arc plate 104 and the suction pipe 105 to descend together. At the same time, the connecting plate 103 drives the limiting rod 202 to move down through the connecting rod 204. The limiting rod 202 drives the upper clamping plate 203 to descend and clamp the pipes. At this time, the two suction pipes 105 are located on both sides of the pipe joint. The gas and dust generated by welding will be sucked in by the main suction port 106.

[0039] See attached document Figure 2 , Figures 4-6 A sliding rod 108 is fixedly connected to the suction pipe 105 near the side of the arc plate 104. A sliding groove 111 for the sliding rod 108 to be inserted is provided on the side of the arc plate 104. A limiting groove 112 for the sliding rod 108 to slide in the sliding groove 111 is provided in the sliding groove 111. A plurality of protrusions 113 are fixedly connected at equal intervals on the inner wall of the sliding groove 111. An elastic ball 109 is fixedly connected to one end of the sliding rod 108 for contact friction braking with the protrusions 113. Drain holes 114 are provided through both ends of the arc plate 104. A secondary air intake 107 is symmetrically provided on the side wall of the suction pipe 105 and on both sides of the sliding rod 108 for providing suction airflow to the sliding groove 111.

[0040] According to the above structure, in order to adapt to the changes in the welding point, the suction pipe 105 can be slid forward or backward, so that the main suction port 106 is close to the smoke outlet. The slide rod 108 moves along the arc of the sliding groove 111, while the limiting grooves 112 are located on the upper and lower inner walls of the sliding groove 111 respectively. The upper and lower ends of the slide rod 108 are locked and limited by the limiting grooves 112 to prevent the suction pipe 105 from shifting left and right when sliding. At the same time, the elastic ball 109 generates frictional resistance with the protrusion 113 during the movement of the slide rod 108. The elastic ball 109 is made of a material with a certain deformation capacity, such as rubber or silicone. The sliding force applied by the person to the suction pipe 105 is sufficient to overcome this friction.

[0041] Furthermore, when the suction tube 105 stops sliding, the position of the suction tube 105 can be temporarily fixed by the frictional resistance between the elastic ball 109 and the protrusion 113. At the same time, after the suction tube 105 slides, part of the sliding groove 111 of the arc plate 104 will be exposed. In order to prevent the dust particles generated by welding from entering the sliding groove 111 and causing the suction tube 105 to slide poorly, the auxiliary air intake 107 faces the sliding groove 111 and simultaneously sucks up the dust particles. Some dust particles can also fall directly down and be discharged through the leakage hole 114.

[0042] This utility model allows the upper clamping plate 203, the arc-shaped plate 104, and the suction pipe 105 to descend together by rotating the adjusting screw 102. While the connecting rod 204 clamps the pipe, the suction pipe 105 sucks up and purifies the dust and harmful gases generated during welding at the pipe joint, reducing dust pollution in the working environment, protecting the health of workers, and expanding the functionality of traditional tooling fixtures.

[0043] The working principle of this utility model is as follows: According to the above structure, the fan 205 starts to generate negative pressure, and the external airflow is drawn into the suction pipe 105 through the main air intake 106, and is transported to the air duct 207 through the diversion pipe 110. The harmful gases and impurities are filtered through the filter element inside the filter box 206. The air duct 207 passes through the trident plate 101 upward and then turns downward and passes through the trident plate 101 again. It extends at the bottom of the trident plate 101 and connects with the diversion pipe 110. This extension section needs to be provided with a certain redundant length so that it can provide sufficient length for adaptation when the suction pipe 105 slides.

[0044] Furthermore, the two pipes are placed on the two lower clamping plates 201 respectively. By rotating the adjusting screw 102, the connecting plate 103 is driven to descend. The connecting plate 103 drives the arc plate 104 and the suction pipe 105 to descend together. At the same time, the connecting plate 103 drives the limiting rod 202 to move down through the connecting rod 204. The limiting rod 202 drives the upper clamping plate 203 to descend and clamp the pipes. At this time, the two suction pipes 105 are located on both sides of the pipe joint. The gas and dust generated by welding will be sucked in by the main suction port 106.

[0045] To adapt to changes in the welding point, the suction pipe 105 can be slid forward or backward, bringing the main suction port 106 closer to the smoke outlet. The slide rod 108 moves along the arc of the sliding groove 111, while the limiting grooves 112 are located on the upper and lower inner walls of the sliding groove 111. The upper and lower ends of the slide rod 108 are locked and limited by the limiting grooves 112 to prevent the suction pipe 105 from shifting left and right during sliding. At the same time, the elastic ball 109 generates frictional resistance with the protrusion 113 during the movement of the slide rod 108. The elastic ball 109 is made of a material with a certain deformation capacity, such as rubber or silicone. The sliding force applied by the person to the suction pipe 105 is sufficient to overcome this friction.

[0046] Furthermore, when the suction pipe 105 stops sliding, the position of the suction pipe 105 can be temporarily fixed by the frictional resistance between the elastic ball 109 and the protrusion 113. At the same time, after the suction pipe 105 slides, part of the sliding groove 111 of the arc plate 104 will be exposed. In order to prevent the dust particles generated by welding from entering the sliding groove 111 and causing the suction pipe 105 to slide poorly, the auxiliary air intake 107 faces the sliding groove 111 and simultaneously sucks up the dust particles. Some dust particles can also fall directly down and be discharged through the leakage hole 114.

[0047] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional methods in the art.

Claims

1. A pipe welding fixture, comprising a column (1) fixedly installed on the top of a base plate (2), characterized in that: The top outer wall of the column (1) is fixedly connected to a three-pronged plate (101). The middle fork of the three-pronged plate (101) is threaded with an adjusting screw (102), and the bottom of the adjusting screw (102) is rotatably connected to a pipe frame. Two suction pipes (105) are provided below the pipe frame, and multiple main air intakes (106) are provided on the opposite sides of the suction pipes (105). The ends of the suction tube (105) are connected to a diversion tube (110), and a suction purification mechanism is installed on the top of the substrate (2) to provide suction airflow to the diversion tube (110). The suction tube (105) is an arc-shaped strip.

2. The pipe welding fixture according to claim 1, characterized in that: The tube rack includes a connecting plate (103) that is rotatably connected to the bottom of the adjusting screw (102), and the bottom ends of the connecting plate (103) are fixedly connected with arc-shaped plates (104) in a mirror-symmetrical manner. The suction tube (105) is slidably disposed on the opposite sidewalls of the two arc-shaped plates (104), and the suction tube (105) is distributed in a mirror symmetrical manner with the diversion tube (110) as the axis.

3. The pipe welding fixture according to claim 2, characterized in that: The base plate (2) is provided with two lower clamping plates (201) at the top. The edge fork of the three-pronged plate (101) is provided with a limiting rod (202). The bottom end of the limiting rod (202) is provided with an upper clamping plate (203) corresponding to the lower clamping plate (201). The lower clamping plate (201) and the upper clamping plate (203) are V-shaped and their openings are opposite each other for clamping pipe fittings. The arc-shaped plate (104) is disposed between the two upper clamping plates (203); The top end of the limiting rod (202) is fixedly connected to a connecting rod (204), and one end of the connecting rod (204) is fixedly connected to the connecting plate (103).

4. The pipe welding fixture according to claim 1, characterized in that: The suction purification mechanism includes a fan (205) fixedly installed on one side of the column (1), and a filter box (206) fixedly installed on the other side of the column (1). The fan (205) is connected to the filter box (206), and the air duct (207) is fixedly installed on the side wall of the column (1).

5. The pipe welding fixture according to claim 4, characterized in that: One end of the duct (207) is fixedly connected to the filter box (206), and the other end passes through the three-pronged plate (101) and is fixedly connected to the diversion pipe (110).

6. The pipe welding fixture according to claim 2, characterized in that: A slide rod (108) is fixedly connected to the side of the suction tube (105) near the arc plate (104). The side of the arc plate (104) is provided with a sliding groove (111) for the slide rod (108) to be inserted, and a limiting groove (112) is provided in the sliding groove (111) for the slide rod (108) to be fitted and slid.

7. The pipe welding fixture according to claim 6, characterized in that: The inner wall of the sliding groove (111) is fixedly connected with a plurality of protrusions (113) at equal intervals, and one end of the slide rod (108) is fixedly connected with an elastic ball (109) for contact friction braking with the protrusions (113).

8. The pipe welding fixture according to claim 2, characterized in that: The arc-shaped plate (104) has through holes (114) at both ends.

9. The pipe welding fixture according to claim 6, characterized in that: The suction pipe (105) has symmetrical secondary air inlets (107) on its sidewalls and on both sides of the slide bar (108) for providing suction airflow to the sliding groove (111).

10. The pipe welding fixture according to claim 3, characterized in that: The height of the upper clamping plate (203) at the contact position with the pipe fitting is lower than the height of the arc plate (104) on the same vertical plane.

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