Fixing device for metal product pipeline welding

Abstract

The invention discloses a fixing device for metal product pipeline welding, and relates to the technical field of pipeline welding, the fixing device comprises a U-shaped frame, two hook plates are fixed to the bottom end of the U-shaped frame, the hook plates are used for hooking the lower portion of a pipeline, a transverse wide plate is fixedly installed on the top faces of the hook plates, and an electric air cylinder penetrates through the top of the back face of the transverse wide plate and is fixedly installed on the top of the back face of the transverse wide plate; a double-arc-shaped plate is fixed to the front face of the telescopic end of the electric air cylinder, L-shaped rods are fixed to the two sides of the front face of the double-arc-shaped plate, U-shaped rods are fixed to the bottoms of the outer walls of the L-shaped rods, square grooves are formed in the middles of the top faces of the U-shaped rods, and inclined pressing devices are arranged on the inner walls of the square grooves of the U-shaped rods and used for pressing a pipeline so that the pipeline can not shake in hook plates. The pipeline is pushed backwards into the hook plate through the semi-arc rubber pad, the hook plate hooks the lower portion of the pipeline, and therefore the problem that the clamping effect of equipment is poor due to the fact that the pipeline slides down from the equipment is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding, and particularly to a fixing device for welding metal product pipelines. Background Art

[0002] A metal pipeline is a device formed by connecting pipes, connectors, valves and other components for transporting fluids such as gases and liquids. During daily use, different pipelines need to be welded to meet different usage requirements of users.

[0003] The patent with the publication number CN114633069A discloses a positioning device and method for welding tubular workpieces, belonging to the technical field of intelligent manufacturing. It includes a base and a plurality of rollers arranged at the bottom of the base, and also includes a lifting mechanism, a rotating mechanism, a displacement mechanism and a positioning mechanism. Among them, the lifting mechanism is arranged on the base, the rotating mechanism is arranged on the lifting mechanism, the displacement mechanism is arranged on the rotating mechanism, the positioning mechanism is connected to the displacement mechanism for fixing the position of the workpiece, and a lever assembly is also arranged on the positioning mechanism to balance the positioning of the workpiece.

[0004] However, the current pipeline welding positioning device has the following problems: when using this positioning device, since the surface of the pipeline is a smooth arc surface during the process of clamping the pipeline, it is easy to slip during the clamping process, which may lead to poor clamping effect of the device. Therefore, we propose a fixing device for welding metal product pipelines. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a fixing device for welding metal product pipelines, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A fixing device for welding metal product pipelines includes a U-shaped frame. Two hook plates are fixed at the bottom end of the U-shaped frame, and the hook plates are used to hook the lower part of the pipeline. A horizontally wide plate is fixedly installed on the top surface of the hook plate. An electric cylinder is fixedly installed through and at the top of the back of the horizontally wide plate. A double-arc plate is fixed to the front of the telescopic end of the electric cylinder. L-shaped rods are fixed to both sides of the front of the double-arc plate. A U-shaped rod is fixed to the bottom of the outer wall of the L-shaped rod. A square groove is opened in the middle of the top surface of the U-shaped rod. An inclined pressing device is arranged on the inner wall of the square groove of the U-shaped rod, and the inclined pressing device is used to press the pipeline so that the pipeline will not shake in the hook plate. An anti-collision device is arranged on the top surface of the inclined pressing device, and the anti-collision device is used to buffer the collision between the horizontally wide plate and the double-arc plate. The L-shaped rods are located in front of the hook plates, the U-shaped rod is located directly below the hook plates, and two semi-circular arc rubber pads are fixed to the back of the U-shaped rod. The semi-circular arc rubber pads are located on the side where the two hook plates are away from each other. During the backward movement of the semi-circular arc rubber pads, they contact the surface of the pipeline, and the semi-circular arc rubber pads push the pipeline backward, and the pipeline enters the hook plates.

[0007] According to the above technical solution, an L-shaped frame is fixed to the back surface of the hook plate, a strip plate is fixed to the top surface of the L-shaped frame, the strip plate is located above the hook plate, and the strip plate is used to support the electric cylinder.

[0008] According to the above technical solution, a long rod is fixed to the back surface of the L-shaped rod, a ring block is fixed to the top surface of the hook plate, the outer wall of the long rod is in sliding contact with the inner wall of the ring block, and the long rod is used for guiding and supporting the L-shaped rod.

[0009] According to the above technical solution, a threaded mounting shaft is provided in the middle of the top surface of the U-shaped frame, a chamfer is provided at the bottom of the front surface of the hook plate, and two circular holes are provided on the front surface of the double arc plate.

[0010] According to the above technical solution, a slant plate is embedded in the inner wall of the square groove of the U-shaped rod, grooves are provided at the tops of the left and right sides of the slant plate, a sliding rod is penetrated and slidably mounted on the top surface of the slant plate, a square plate is fixed to the top surface of the sliding rod, a first spring is fixed to the bottom surface of the square plate, one end of the first spring away from the square plate is fixedly connected to the top surface of the slant plate, the first spring is sleeved on the sliding rod, the first spring presses against the sliding rod with a compressive force, a rubber column is fixed to the end of the sliding rod away from the square plate, the outer wall of the pipeline is on the movement track of the rubber column, the rubber column contacts the surface of the pipeline, under the action of the extrusion force, the sliding rod slides forward in the slant plate, the sliding rod drives the square plate to move forward, and the first spring on the square plate starts to stretch, so that the rubber column tightly presses against the surface of the pipeline.

[0011] According to the above technical solution, U-shaped plates are fixed to the inner walls of the grooves of the slant plate, double arc grooves are provided on the top and bottom surfaces of the U-shaped plates, arc-shaped elastic pieces are fixed to the inner walls of the U-shaped plates, rollers are slidably mounted on the inner walls of the double arc grooves of the U-shaped plates, the outer walls of the rollers abut against the outer walls of the arc-shaped elastic pieces, the mutually approaching sides of the hook plates are on the movement tracks of the outer walls of the rollers, the rollers are used for clamping between the two hook plates, the rollers roll on the surface of the hook plates, and under the elastic force of the arc-shaped elastic pieces, the rollers tightly press against the surface of the hook plates.

[0012] According to the above technical solution, a ring frame is fixed to the top surface of the U-shaped plate, a sliding hole is provided at the top of the front surface of the ring frame, a straight rod is slidably mounted on the inner wall of the sliding hole of the ring frame, a ring piece is fixed to the outer wall of the straight rod, the outer wall of the ring piece is in sliding contact with the inner wall of the circular hole of the double arc plate, a second spring is fixed to the front surface of the ring piece, one end of the second spring away from the ring piece is fixedly connected to the back surface of the ring frame, the second spring is sleeved on the straight rod, the second spring presses against the sliding rod with a compressive force, a rubber disc is fixed to the back surface of the straight rod, the front surface of the horizontal wide plate is on the movement track of the back surface of the rubber disc, the rubber disc contacts the surface of the horizontal wide plate during the backward movement, under the action of the extrusion force, the straight rod moves forward in the ring frame, and the straight rod drives the ring piece to move forward.

[0013] According to the above technical solution, a vertical plate is fixed to the front of the straight rod, a short rod is fixed to the bottom of the back surface of the vertical plate, a circular tube penetrates and is fixed to the bottom of the front surface of the ring frame, the inner wall of the circular tube is in sliding contact with the outer wall of the short rod, the short rod is used to guide the straight rod, and the short rod moves forward in the circular tube so that the short rod can guide and support the movement of the straight rod.

[0014] The present invention provides a fixing device for welding metal product pipelines. It has the following beneficial effects: (1) In the present invention, through the cooperation of the U-shaped frame, the hook plate, the horizontally wide plate, the electric cylinder, the L-shaped frame, the strip plate, the double arc plate, the L-shaped rod, the U-shaped rod, the long rod and the ring block with the semi-circular arc rubber pad, the telescopic end of the electric cylinder drives the double arc plate to move backward, the double arc plate drives the L-shaped rod to move backward, the L-shaped rod drives the long rod to move backward, the long rod moves backward in the ring block to guide and support the movement of the L-shaped rod, the L-shaped rod drives the U-shaped rod to move backward, the U-shaped rod drives the semi-circular arc rubber pad to move backward, and the semi-circular arc rubber pad contacts the surface of the pipeline during the backward movement. The semi-circular arc rubber pad pushes the pipeline backward, and the pipeline enters the hook plate, so that the hook plate hooks the lower part of the pipeline, preventing the pipeline from slipping during welding and preventing the pipeline from slipping from the equipment, resulting in poor clamping effect of the equipment.

[0015] (2) Through the setting of the oblique pressing device in the present invention, the oblique plate, the sliding rod, the square plate, the first spring, the rubber column, the U-shaped plate and the arc-shaped elastic sheet cooperate with the roller. The rubber column contacts the surface of the pipeline. Under the action of the extrusion force, the sliding rod slides forward in the oblique plate, the sliding rod drives the square plate to move forward, and the first spring on the square plate starts to stretch, so that the rubber column tightly presses against the surface of the pipeline, preventing the pipeline from shaking in the hook plate and preventing the pipeline from tilting and falling due to shaking in the hook plate.

[0016] (3) Through the setting of the oblique pressing device in the present invention, the U-shaped plate and the arc-shaped elastic sheet cooperate with the roller. The roller rolls on the surface of the hook plate. Under the elastic force of the arc-shaped elastic sheet, the roller tightly presses against the surface of the hook plate, so that the semi-circular arc rubber pad and the hook plate can stably press against the surface of the pipeline without loosening, preventing loosening between the semi-circular arc rubber pad and the hook plate and causing unstable clamping of the pipeline.

[0017] (4) Through the setting of the anti-collision device in the present invention, the ring frame, the straight rod, the ring piece, the second spring, the rubber disc, the vertical plate and the short rod cooperate with the circular tube. The rubber disc contacts the surface of the horizontally wide plate during the backward movement. Under the action of the extrusion force, the straight rod moves forward in the ring frame, the straight rod drives the ring piece to move forward, and under the elastic force of the second spring, when the double arc plate moves backward, it will not collide with the surface of the horizontally wide plate, preventing the double arc plate from colliding with the surface of the horizontally wide plate and causing easy damage to the equipment parts.

[0018] (5) With the anti-collision device provided in the present invention, the vertical plate and the short rod cooperate with the circular tube, and the short rod moves forward in the circular tube, enabling the short rod to guide and support the movement of the straight rod, preventing the straight rod from being deformed and damaged due to lack of support during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the whole of the present invention; Figure 2 It is a schematic diagram of the back of the whole of the present invention; Figure 3 It is a schematic diagram of the hook plate of the present invention; Figure 4 It is a schematic diagram of the oblique pressing device of the present invention; Figure 5 It is a sectional schematic diagram of the oblique pressing device of the present invention; Figure 6 It is a schematic diagram of the anti-collision device of the present invention; Figure 7 For the present invention Figure 6 Partial enlarged schematic diagram at A in.

[0020] In the figure: 1, U-shaped frame; 2, hook plate; 3, horizontally wide plate; 4, electric cylinder; 5, L-shaped frame; 6, strip plate; 7, double arc plate; 8, L-shaped rod; 9, U-shaped rod; 10, long rod; 11, ring block; 12, semi-circular rubber pad; 13, oblique pressing device; 131, inclined plate; 132, sliding rod; 133, square plate; 134, spring one; 135, rubber column; 136, U-shaped plate; 137, arc-shaped elastic piece; 138, roller; 14, anti-collision device; 141, ring frame; 142, straight rod; 143, ring piece; 144, spring two; 145, rubber disc; 146, vertical plate; 147, short rod; 148, circular tube; 15, pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Please refer to Figures 1 - 7, an embodiment of the present invention is: a fixing device for welding metal product pipelines, including a U-shaped frame 1. Two hook plates 2 are fixed to the bottom end of the U-shaped frame 1. The hook plates 2 are used to hook under the pipeline 15. A horizontally wide plate 3 is fixedly installed on the top surface of the hook plate 2. An electric cylinder 4 is fixedly installed through and at the top of the back of the horizontally wide plate 3. A double-arc plate 7 is fixed to the front of the telescopic end of the electric cylinder 4. L-shaped rods 8 are fixed to both sides of the front of the double-arc plate 7. A U-shaped rod 9 is fixed to the bottom of the outer wall of the L-shaped rod 8. A square groove is formed in the middle of the top surface of the U-shaped rod 9. The L-shaped rod 8 is located in front of the hook plate 2, and the U-shaped rod 9 is located directly below the hook plate 2. Two semi-circular arc rubber pads 12 are fixed to the back of the U-shaped rod 9. The semi-circular arc rubber pads 12 are located on the side where the two hook plates 2 are away from each other. An L-shaped frame 5 is fixed to the back of the hook plate 2. A strip plate 6 is fixed to the top surface of the L-shaped frame 5. The strip plate 6 is located above the hook plate 2. The strip plate 6 is used to support the electric cylinder 4. A long rod 10 is fixed to the back of the L-shaped rod 8. A ring block 11 is fixed to the top surface of the hook plate 2. The outer wall of the long rod 10 is in sliding contact with the inner wall of the ring block 11. The long rod 10 is used to guide and support the L-shaped rod 8. A threaded mounting shaft is provided in the middle of the top surface of the U-shaped frame 1. A chamfer is provided at the bottom of the front of the hook plate 2. Two round holes are formed in the front of the double-arc plate 7. The telescopic end of the electric cylinder 4 drives the double-arc plate 7 to move backward. The double-arc plate 7 drives the L-shaped rod 8 to move backward. The L-shaped rod 8 drives the long rod 10 to move backward. The long rod 10 moves backward in the ring block 11 to guide and support the movement of the L-shaped rod 8. The L-shaped rod 8 drives the U-shaped rod 9 to move backward. The U-shaped rod 9 drives the semi-circular arc rubber pads 12 to move backward. During the backward movement of the semi-circular arc rubber pads 12, the semi-circular arc rubber pads 12 come into contact with the surface of the pipeline 15. The semi-circular arc rubber pads 12 push the pipeline 15 backward. The pipeline 15 enters the hook plate 2, so that the hook plate 2 hooks under the pipeline 15, preventing the pipeline 15 from slipping during the welding process and avoiding the situation where the pipeline 15 slips from the equipment during the welding process of the clamping device, resulting in poor clamping effect of the equipment; An oblique pressure device 13 is arranged on the inner wall of the square groove of the U-shaped rod 9. The oblique pressure device 13 is used to press the pipeline 15 to prevent the pipeline 15 from shaking in the hook plate 2. An anti-knock device 14 is arranged on the top surface of the oblique pressure device 13. The anti-knock device 14 is used to buffer the collision between the horizontally wide plate 3 and the double-arc plate 7.

[0023] Since the surface of the pipeline 15 is a smooth arc surface during the process of clamping the pipeline 15, it is easy to slip during the clamping process. When using this equipment, the U-shaped frame 1 drives the hook plate 2 to the rear of the pipeline 15. At this time, the operator starts the electric cylinder 4 on the horizontal wide plate 3. The hook plate 2 supports the L-shaped frame 5, the L-shaped frame 5 supports the strip plate 6, the strip plate 6 supports the electric cylinder 4, and the telescopic end of the electric cylinder 4 starts to contract backward. The telescopic end of the electric cylinder 4 drives the double arc plate 7 to move backward, the double arc plate 7 drives the L-shaped rod 8 to move backward, the L-shaped rod 8 drives the long rod 10 to move backward, and the long rod 10 moves backward in the ring block 11 to guide and support the movement of the L-shaped rod 8. The L-shaped rod 8 drives the U-shaped rod 9 to move backward, the U-shaped rod 9 drives the semi-circular arc rubber pad 12 to move backward. During the backward movement of the semi-circular arc rubber pad 12, the semi-circular arc rubber pad 12 contacts the surface of the pipeline 15, and the semi-circular arc rubber pad 12 pushes the pipeline 15 backward. The pipeline 15 enters the hook plate 2, so that the hook plate 2 hooks the lower part of the pipeline 15, preventing the pipeline 15 from slipping during the welding process, and avoiding the problem that the pipeline 15 slips from the equipment during the welding process of the pipeline 15, resulting in poor clamping effect of the equipment.

[0024] Please refer to Figures 1 - 7 , on the basis of the above embodiment, in another embodiment of the present invention, the inner wall of the square groove of the U-shaped rod 9 is fixedly embedded with an inclined plate 131. Grooves are provided at the tops of the left and right sides of the inclined plate 131. A sliding rod 132 is penetrated and slidably installed on the top surface of the inclined plate 131. A square plate 133 is fixed on the top surface of the sliding rod 132. A first spring 134 is fixed on the bottom surface of the square plate 133. One end of the first spring 134 away from the square plate 133 is fixedly connected to the top surface of the inclined plate 131. The first spring 134 is sleeved on the sliding rod 132, and the first spring 134 presses against the sliding rod 132 with a compressive force. A rubber column 135 is fixed at one end of the sliding rod 132 away from the square plate 133. The outer wall of the pipeline 15 is on the movement track of the rubber column 135. During the backward movement of the rubber column 135, the rubber column 135 contacts the surface of the pipeline 15. Under the action of the extrusion force, the sliding rod 132 slides forward in the inclined plate 131, and the sliding rod 132 drives the square plate 133 to move forward. The first spring 134 on the square plate 133 starts to stretch, so that the rubber column 135 tightly presses against the surface of the pipeline 15, preventing the pipeline 15 from shaking in the hook plate 2, and avoiding the pipeline 15 from tilting and falling due to shaking in the hook plate 2 during the welding process of the pipeline 15 by the clamping device.

[0025] The inner walls of the grooves of the inclined plate 131 are fixedly provided with U-shaped plates 136. Double arc grooves are formed on the top and bottom surfaces of the U-shaped plates 136. Arc-shaped elastic pieces 137 are fixedly arranged on the inner walls of the U-shaped plates 136. Rollers 138 are slidably installed on the inner walls of the double arc grooves of the U-shaped plates 136. The outer walls of the rollers 138 are abutted against the outer walls of the arc-shaped elastic pieces 137. The sides of the hook plates 2 close to each other are located on the movement tracks of the outer walls of the rollers 138. The rollers 138 are used for being clamped between the two hook plates 2. During the backward movement of the rollers 138, the rollers 138 are extruded by the surfaces of the hook plates 2, and the rollers 138 move in the double arc grooves of the U-shaped plates 136. The rollers 138 abut against the arc-shaped elastic pieces 137. Under the action of friction, the rollers 138 roll on the surfaces of the hook plates 2. Under the elastic force of the arc-shaped elastic pieces 137, the rollers 138 tightly abut against the surfaces of the hook plates 2, so that the semi-circular arc rubber pads 12 and the hook plates 2 can stably abut against the surface of the pipeline 15 without loosening, avoiding the loosening between the semi-circular arc rubber pads 12 and the hook plates 2 during the welding of the pipeline 15 by the clamping device, resulting in unstable clamping of the pipeline 15.

[0026] A ring frame 141 is fixedly arranged on the top surface of the U-shaped plate 136. A sliding hole is formed at the top of the front surface of the ring frame 141. A straight rod 142 is slidably installed on the inner wall of the sliding hole of the ring frame 141. A ring piece 143 is fixedly arranged on the outer wall of the straight rod 142. The outer wall of the ring piece 143 is in sliding contact with the inner wall of the circular hole of the double arc plate 7. A second spring 144 is fixedly arranged on the front surface of the ring piece 143. The end of the second spring 144 far from the ring piece 143 is fixedly connected with the back surface of the ring frame 141. The second spring 144 is sleeved on the straight rod 142. The second spring 144 presses against the sliding rod 132 with a compressive force. A rubber disc 145 is fixedly arranged on the back surface of the straight rod 142. The front surface of the horizontal wide plate 3 is located on the movement track of the back surface of the rubber disc 145. During the backward movement of the rubber disc 145, it contacts the surface of the horizontal wide plate 3. Under the action of the extrusion force, the straight rod 142 moves forward in the ring frame 141. The straight rod 142 drives the ring piece 143 to move forward. The second spring 144 on the ring piece 143 starts to contract. Under the elastic force of the second spring 144, when the double arc plate 7 moves backward, it will not bump against the surface of the horizontal wide plate 3, avoiding that during the clamping of the pipeline 15 by the clamping device, the double arc plate 7 bumps against the surface of the horizontal wide plate 3, resulting in easy damage of the equipment parts.

[0027] A vertical plate 146 is fixedly arranged on the front surface of the straight rod 142. A short rod 147 is fixedly arranged at the bottom of the back surface of the vertical plate 146. The front bottom of the ring frame 141 penetrates and is fixedly provided with a circular tube 148. The inner wall of the circular tube 148 is in sliding contact with the outer wall of the short rod 147. The short rod 147 is used for guiding the straight rod 142. The short rod 147 moves forward in the circular tube 148, so that the short rod 147 can guide and support the movement of the straight rod 142, avoiding that during the clamping of the pipeline 15 by the device, the movement of the straight rod 142 has no support, resulting in deformation and damage of the straight rod 142.

[0028] While the L-shaped rod 8 drives the U-shaped rod 9 to move backward, the U-shaped rod 9 drives the inclined plate 131 to move backward, the inclined plate 131 drives the sliding rod 132 to move backward, and the sliding rod 132 drives the rubber column 135 to move backward. During the backward movement of the rubber column 135, the rubber column 135 contacts the surface of the pipeline 15. Under the action of the extrusion force, the sliding rod 132 slides forward in the inclined plate 131. The sliding rod 132 drives the square plate 133 to move forward, and the first spring 134 on the square plate 133 begins to stretch, so that the rubber column 135 tightly abuts against the surface of the pipeline 15, preventing the pipeline 15 from shaking in the hook plate 2. When the equipment is in use, the pipeline 15 shakes in the hook plate 2, thus avoiding the problem that the pipeline 15 shakes and tilts and falls in the hook plate 2 during the welding of the pipeline 15 by the clamping device.

[0029] While the U-shaped rod 9 drives the inclined plate 131 to move backward, the inclined plate 131 drives the U-shaped plate 136 to move backward, and the U-shaped plate 136 drives the roller 138 to move backward. During the backward movement of the roller 138, the roller 138 is squeezed by the surface of the hook plate 2. The roller 138 moves in the double arc grooves of the U-shaped plate 136. The roller 138 abuts against the arc-shaped elastic piece 137. Under the action of the friction force, the roller 138 rolls on the surface of the hook plate 2. At the same time, under the elastic force of the arc-shaped elastic piece 137, the roller 138 tightly abuts against the surface of the hook plate 2, so that during the process of the equipment clamping the pipeline 15, the semi-circular rubber pad 12 and the hook plate 2 can stably abut against the surface of the pipeline 15 without loosening, preventing the semi-circular rubber pad 12 and the hook plate 2 from loosening during the process of clamping the pipeline 15, thus avoiding the problem that the semi-circular rubber pad 12 and the hook plate 2 loosen during the welding of the pipeline 15 by the clamping device, resulting in unstable clamping of the pipeline 15.

[0030] While the inclined plate 131 drives the U-shaped plate 136 to move backward, the U-shaped plate 136 drives the ring frame 141 to move backward, the ring frame 141 drives the straight rod 142 to move backward, and the straight rod 142 drives the rubber disk 145 to move backward. During the backward movement of the rubber disk 145, it contacts the surface of the horizontal wide plate 3. Under the action of the extrusion force, the straight rod 142 moves forward in the ring frame 141. The straight rod 142 drives the ring piece 143 to move forward, and the second spring 144 on the ring piece 143 begins to contract. Under the elastic force of the second spring 144, when the double arc plate 7 moves backward, it will not knock against the surface of the horizontal wide plate 3, preventing the double arc plate 7 from knocking against the surface of the horizontal wide plate 3 when the equipment is in use, thus avoiding the problem that the parts of the equipment are easily damaged when the double arc plate 7 knocks against the surface of the horizontal wide plate 3 during the clamping of the pipeline 15 by the clamping device.

[0031] While the straight rod 142 moves forward in the ring frame 141, the straight rod 142 drives the vertical plate 146 to move forward, the vertical plate 146 drives the short rod 147 to move forward, and the short rod 147 moves forward in the round tube 148, so that the short rod 147 can guide and support the movement of the straight rod 142, preventing the straight rod 142 from having no support during movement when the device is in use, thereby avoiding the problem that the straight rod 142 is deformed and damaged due to lack of support during the movement of the straight rod 142 when the device clamps the pipeline 15.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A fixing device for welding a metal product pipe, comprising a U-shaped frame (1), characterized in that: Two hook plates (2) are fixed to the bottom end of the U-shaped frame (1), and the hook plates (2) are used to hook the bottom of the pipe (15); A horizontal wide plate (3) is fixedly mounted on the top surface of the hook plate (2); an electric cylinder (4) is penetrated through and fixedly mounted on the top of the back of the horizontal wide plate (3); a double arc plate (7) is fixed on the front of the telescopic end of the electric cylinder (4); L-shaped rods (8) are fixed on both sides of the front of the double arc plate (7); a U-shaped rod (9) is fixed on the bottom of the outer wall of the L-shaped rod (8); and a square groove is provided in the middle of the top surface of the U-shaped rod (9); The inner wall of the square groove of the U-shaped rod (9) is provided with an oblique pressing device (13), and the oblique pressing device (13) is used to press the pipeline (15); The top surface of the oblique pressure device (13) is provided with an anti-knock device (14), and the anti-knock device (14) is used to buffer the collision between the horizontal width plate (3) and the double arc plate (7); The L-shaped rod (8) is located in front of the hook plate (2), the U-shaped rod (9) is located directly below the hook plate (2), and two semi-arc rubber pads (12) are fixed to the back of the U-shaped rod (9), and the semi-arc rubber pads (12) are located on the side of the two hook plates (2) that are away from each other.

2. A metal product pipeline welding fixing device according to claim 1, characterized in that: An L-shaped frame (5) is fixed on the back of the hook plate (2), a strip plate (6) is fixed on the top surface of the L-shaped frame (5), the strip plate (6) is located above the hook plate (2), and the strip plate (6) is used to support the electric cylinder (4).

3. A metal product pipeline welding fixing device according to claim 2, characterized in that: A long rod (10) is fixed to the back of the L-shaped rod (8), a ring block (11) is fixed to the top surface of the hook plate (2), the outer wall of the long rod (10) is in sliding contact with the inner wall of the ring block (11), and the long rod (10) is used to guide and support the L-shaped rod (8).

4. A metal product pipeline welding fixing device according to claim 3, characterized in that: A threaded mounting shaft is provided in the middle of the top surface of the U-shaped frame (1), a chamfer is provided at the bottom of the front surface of the hook plate (2), and two circular holes are provided on the front surface of the double-arc plate (7).

5. A metal product pipeline welding fixing device according to claim 4, characterized in that: An inclined plate (131) is embedded in the inner wall of the square groove of the U-shaped rod (9), and grooves are provided on the top of the left and right sides of the inclined plate (131). A slide rod (132) is penetrated and slidably installed on the top surface of the inclined plate (131), a square plate (133) is fixed to the top surface of the slide rod (132), and a spring (134) is fixed to the bottom surface of the square plate (133). One end of the spring (134) away from the square plate (133) is fixedly connected to the top surface of the inclined plate (131), and the spring (134) is sleeved on the slide rod (132); The spring 1 (134) presses against the slide bar (132) with a compressive force; A rubber column (135) is fixed to one end of the sliding rod (132) away from the square plate (133), and the outer wall of the pipe (15) is located on the movement track of the rubber column (135).

6. A metal product pipeline welding fixing device according to claim 5, characterized in that: A U-shaped plate (136) is fixed to the inner wall of the groove of the inclined plate (131), the top and bottom surfaces of the U-shaped plate (136) are provided with double arc grooves, an arc-shaped spring sheet (137) is fixed to the inner wall of the U-shaped plate (136), a roller (138) is slidably mounted on the inner wall of the double arc groove of the U-shaped plate (136), the outer wall of the roller (138) abuts against the outer wall of the arc-shaped spring sheet (137), and the side of the hook plate (2) that is close to each other is on the movement track of the outer wall of the roller (138); The roller (138) is used to be clamped between the two hook plates (2).

7. A metal product pipeline welding fixing device according to claim 6, characterized in that: A ring frame (141) is fixed on the top surface of the U-shaped plate (136); a sliding hole is opened on the top of the front surface of the ring frame (141); a straight rod (142) is slidably mounted on the inner wall of the sliding hole of the ring frame (141); a ring sheet (143) is fixed on the outer wall of the straight rod (142); the outer wall of the ring sheet (143) is in sliding contact with the inner wall of the circular hole of the double arc plate (7); a second spring (144) is fixed on the front surface of the ring sheet (143); one end of the second spring (144) away from the ring sheet (143) is fixedly connected to the back surface of the ring frame (141); and the second spring (144) is sleeved on the straight rod (142); The second spring (144) presses against the slide bar (132) with a compressive force; A rubber disk (145) is fixed to the back of the straight rod (142), and the front of the horizontal wide plate (3) is located on the movement track of the back of the rubber disk (145).

8. A metal product pipeline welding fixing device according to claim 7, characterized in that: A vertical plate (146) is fixed on the front of the straight rod (142), a short rod (147) is fixed on the bottom of the back of the vertical plate (146), a round tube (148) passes through and is fixed on the bottom of the front of the ring frame (141), and the inner wall of the round tube (148) is in sliding contact with the outer wall of the short rod (147); The short rod (147) is used to guide the straight rod (142).

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