Pipeline welding protection device

Abstract

The utility model discloses a pipeline welding protection device which comprises a device base, a lifting adjusting mechanism, a protection cover, a steering adjusting mechanism, a sliding clamping assembly and a welding device body. The sliding clamping assemblies are arranged on the device base in a sliding mode, and the pair of sliding clamping assemblies are symmetrically arranged and clamp two to-be-welded pipeline bodies correspondingly, so that the welding ends of the two pipeline bodies can be coaxially connected in an abutting mode. The welding device body is slidably arranged on the device base, the sliding direction of the welding device body is perpendicular to the sliding direction of the sliding clamping assembly, and the welding device body faces the welding ends of the two pipeline bodies. The lifting adjusting mechanism is installed on the top of the welding device body, and the protective cover is movably arranged on the lifting adjusting mechanism through the steering adjusting mechanism, so that the protective cover can cover the welding ends of the two pipeline bodies. The utility model relates to the technical field of welding equipment, and can solve the problem that a pipeline welding device in the prior art needs to be matched with a handheld protective cover for use.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to a pipeline welding protection device. Background Technique

[0002] The configuration of an efficient refrigeration machine room is the main way to improve the refrigeration energy efficiency in an air conditioning system. A large number of pipelines are arranged in the efficient refrigeration machine room, and the welding between the pipelines is one of the key factors for the refrigeration energy efficiency of the efficient refrigeration machine room.

[0003] Chinese invention patent application CN117020464A discloses a pipeline welding device for equipment in an efficient refrigeration machine room, which includes a base, a telescopic cross arm, two C-shaped frames and four welding heads. The base is provided with a lifting frame, and the lifting direction is perpendicular to the plane where the two pipelines are located; the telescopic cross arm has two telescopic ends, and the telescopic cross arm is arranged on the lifting frame and the telescopic direction is parallel to the spacing direction of the two pipelines; the two C-shaped frames are respectively hinged to the two telescopic ends of the telescopic cross arm, and the rotation angle of each C-shaped frame is at least 180 degrees. The angle of each C-shaped frame in the circumferential direction of the pipeline is 180 degrees, and support wheels are arranged on the inner sides of both ends of each C-shaped frame; the four welding heads are respectively arranged at both ends of each C-shaped frame.

[0004] When the pipeline welding device welds the pipelines in the efficient refrigeration machine room, the operator needs to hold the protective cover by hand to block the flying sparks, which is relatively inconvenient to operate and also affects the working efficiency of the operator. Therefore, it is necessary to provide a pipeline welding protection device that can solve the problem that the existing pipeline welding device needs to be used in cooperation with a hand-held protective cover. Summary of the Invention

[0005] The purpose of the utility model is to provide a pipeline welding protection device that can solve the problem that the existing pipeline welding device needs to be used in cooperation with a hand-held protective cover.

[0006] The utility model is realized as follows:

[0007] A pipeline welding protection device includes a device base, a lifting adjustment mechanism, a protective cover, a steering adjustment mechanism, a sliding clamping assembly and a welding device body; the sliding clamping assembly is slidably arranged on the device base, and a pair of sliding clamping assemblies are symmetrically arranged and respectively clamp two pipeline bodies to be welded, so that the welding ends of the two pipeline bodies can be coaxially abutted; the welding device body is slidably arranged on the device base, the sliding direction of the welding device body is perpendicular to the sliding direction of the sliding clamping assembly, and the welding device body is arranged facing the welding ends of the two pipeline bodies; the lifting adjustment mechanism is installed on the top of the welding device body, and the protective cover is movably arranged on the lifting adjustment mechanism through the steering adjustment mechanism, so that the protective cover can cover above the welding ends of the two pipeline bodies.

[0008] Each group of the sliding clamping assemblies comprises a sliding mechanism and a clamping mechanism; the device base is a hollow structure, a connecting groove is formed on the top plate of the device base, one end of the sliding mechanism passes through the connecting groove and is arranged in the hollow chamber of the device base, and the other end of the sliding mechanism extends to the top of the device base and is connected to the clamping mechanism, so that the clamping mechanism can be slidably arranged above the device base along the connecting groove through the sliding mechanism; the pipeline body is clamped on the clamping mechanism.

[0009] The sliding mechanism includes a sliding servo motor, a rotating threaded rod, a connecting block and a hydraulic jacking piece; the sliding servo motor is installed on the outer wall of the device base, the rotating threaded rod is rotatably arranged in the hollow chamber of the device base, and one end of the rotating threaded rod passes through the outer wall of the device base and is coaxially fixed to the output shaft of the sliding servo motor; a screw hole matching the rotating threaded rod is formed at the bottom of the connecting block, so that the bottom of the connecting block can be slidably arranged in the hollow chamber of the device base along the axial direction of the rotating threaded rod; the upper end of the connecting block passes through the connecting groove and extends to the top of the device base, the hydraulic jacking piece is arranged at the upper end of the connecting block, and the clamping mechanism is installed on the outer shell of the hydraulic jacking piece.

[0010] The clamping mechanism includes a connecting box, a sliding electric push rod, a rack, a gear and a clamping rod; the connecting box is installed on the outer shell of the hydraulic jacking component, a pair of sliding electric push rods are respectively arranged on the connecting box at intervals, a pair of racks are respectively connected to the pair of sliding electric push rods, the gear is rotatably arranged in the connecting box, and the top and bottom of the gear are respectively meshed and connected with the pair of racks; a pair of slide grooves are formed on the connecting box at intervals, one end of a pair of clamping rods respectively passes through the pair of slide grooves and is connected to the pair of racks, and the other ends of the pair of clamping rods are respectively in an arc structure and clamped on both sides of the pipeline body.

[0011] The lifting and adjusting mechanism includes a bracket and a lifting mechanism. The bracket is an inverted J-shaped structure. One end of the bracket is installed on the top of the welder body, and the other end of the bracket extends to above the welding head of the welder body. The lifting mechanism is embedded in the other end of the bracket, and the bottom of the lifting mechanism is connected to the protective cover through the steering adjustment mechanism.

[0012] The lifting mechanism includes a lifting servo motor, a lifting threaded rod, a lifting block and a lifting rod; the lifting servo motor is installed on the top of the other end of the bracket, the lifting threaded rod is rotatably installed in the other end of the bracket, the upper end of the lifting threaded rod passes through the bracket and is coaxially fixed with the output shaft of the lifting servo motor; a screw hole matching the lifting threaded rod is formed on the lifting block, so that the lifting block can be screwed on the lifting threaded rod in a lifting manner, and a lifting groove parallel to the lifting threaded rod is formed on the other end of the bracket, and one end of the lifting block slides through the lifting groove; the upper end of the lifting rod is fixedly connected to the other end of the lifting block, and the lower end of the lifting rod passes through the bottom of the other end of the bracket and is connected to the steering adjustment mechanism.

[0013] The steering adjustment mechanism includes a rotating servo motor, a worm, a worm wheel and a connecting shaft; the rotating servo motor is installed on the protective cover through the outer shell, and one end of the worm is coaxially fixedly connected to the output shaft of the rotating servo motor; the worm wheel is rotatably installed in the outer shell through the connecting shaft and is meshingly connected with the worm, the connecting shaft is rotatably connected to the lower end of the lifting rod, and the connecting shaft is fixed to the protective cover through an ear plate.

[0014] A limiting groove is formed on the device base, and the limiting groove is arranged perpendicular to the connecting groove; a driving electric push rod is installed on the device base and extends into the device base along the limiting groove; the lower end of the welder body passes through the limiting groove and is connected to the driving electric push rod, so that the welder body can be slidably arranged on the device base along the limiting groove through the driving electric push rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with a lifting adjustment mechanism, a steering adjustment mechanism and a protective cover. The protective cover is installed above the main body of the welder through a bracket, and the height can be adjusted by the lifting adjustment mechanism. At the same time, the steering adjustment mechanism can be used to rotate and adjust the angle, so that the protective cover is covered above the welding position at an optimal height and angle to play a protective role. The operator does not need to hold the protective cover, and the welding operation is easier and more labor-saving. It will not cause spark splashing injuries to the operator, and is conducive to improving the welding operation efficiency, meeting the pipeline welding needs of the high-efficiency refrigeration room.

[0017] 2. The utility model is provided with a sliding clamping assembly, which can clamp two pipe bodies through the clamping mechanism, and slide the sliding mechanism close to the two pipe bodies, so that the welding ends of the two pipe bodies are coaxially butted and the butt height can be adjusted by lifting and lowering, which is convenient for the welding operation of the welder body on the two pipe bodies and easy to disassemble after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the pipeline welding protection device of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the clamping mechanism in the pipeline welding protection device of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the sliding mechanism in the pipeline welding protection device of the utility model;

[0021] Figure 4 It is a schematic diagram of the installation of the lifting and adjusting mechanism and the welding device body in the pipeline welding protection device of the utility model on the device base;

[0022] Figure 5It is a schematic structural diagram of the lifting adjustment mechanism, steering adjustment mechanism and protective cover in the pipeline welding protection device of the present utility model;

[0023] Figure 6 It is a schematic structural diagram of the steering adjustment mechanism and the protective cover in the pipeline welding protection device of the present utility model.

[0024] In the figure, 1 is the device base; 11 is the connection box; 12 is the sliding electric push rod; 13 is the rack; 14 is the chute; 15 is the gear; 16 is the clamping rod; 17 is the pipeline main body; 18 is the driving electric push rod; 19 is the welding machine body; 20 is the limit groove; 2 is the lifting adjustment mechanism; 211 is the bracket; 212 is the lifting servo motor; 213 is the lifting threaded rod; 214 is the lifting block; 215 is the lifting groove; 216 is the lifting rod; 217 is the fixed groove; 218 is the protective cover; 3 is the steering adjustment mechanism; 31 is the rotating servo motor; 32 is the worm; 33 is the worm gear; 34 is the connecting shaft; 4 is the sliding servo motor; 41 is the rotating threaded rod; 42 is the connecting block; 43 is the connecting groove; 44 is the hydraulic lifting part. Specific embodiments

[0025] The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to the attached Figure 1 attachment Figure 2 attachment Figure 4 attachment

[0027] A pipeline welding protection device includes a device base 1, a lifting adjustment mechanism 2, a protective cover 218, a steering adjustment mechanism 3, a sliding clamping assembly and a welding machine body 19; the sliding clamping assembly is slidably arranged on the device base 1, and a pair of sliding clamping assemblies are symmetrically arranged and respectively clamp two pipeline main bodies 17 to be welded, so that the welding ends of the two pipeline main bodies 17 can be coaxially abutted; the welding machine body 19 is slidably arranged on the device base 1, the sliding direction of the welding machine body 19 is perpendicular to the sliding direction of the sliding clamping assembly, and the welding machine body 19 is arranged facing the welding ends of the two pipeline main bodies 17; the lifting adjustment mechanism 2 is installed on the top of the welding machine body 19, and the protective cover 218 is movably arranged on the lifting adjustment mechanism 2 through the steering adjustment mechanism 3, so that the protective cover 218 can cover the welding ends of the two pipeline main bodies 17.

[0028] The sliding clamping assembly is used to clamp two pipe bodies 17, make them slide closer to abut against each other, and adjust the clamping height of the pipe bodies 17 according to the pipe diameter of the pipe bodies 17, so as to facilitate the welding of the welding ends of the two pipe bodies 17 by the welding torch body 19.

[0029] Please refer to Appendix Figure 1 to Appendix Figure 3 , each set of the sliding clamping assemblies includes a sliding mechanism and a clamping mechanism; the device base 1 is a hollow structure, a connection groove 43 is formed on the top plate of the device base 1, one end of the sliding mechanism penetrates through the connection groove 43 and is arranged in the hollow chamber of the device base 1, and the other end of the sliding mechanism extends above the device base 1 and is connected to the clamping mechanism, so that the clamping mechanism is slidably arranged above the device base 1 along the connection groove 43 through the sliding mechanism; the pipe body 17 is clamped on the clamping mechanism.

[0030] The clamping mechanism is used to clamp the pipe body 17, and the sliding mechanism is used to drive the clamping mechanism and the pipe body 17 to slide along the connection groove 43, so that the two pipe bodies 17 are close to each other and coaxially butted together, facilitating subsequent welding operations.

[0031] Please refer to Appendix Figure 3 , the sliding mechanism includes a sliding servo motor 4, a rotating threaded rod 41, a connecting block 42 and a hydraulic lifting member 44; the sliding servo motor 4 is installed on the outer wall of the device base 1, the rotating threaded rod 41 is rotatably arranged in the hollow chamber of the device base 1 through a rotating bearing, and one end of the rotating threaded rod 41 penetrates through the outer wall of the device base 1 and is coaxially fixed to the output shaft of the sliding servo motor 4; a threaded hole matching the rotating threaded rod 41 is formed at the bottom of the connecting block 42, so that the bottom of the connecting block 42 is slidably arranged in the hollow chamber of the device base 1 along the axial direction of the rotating threaded rod 41; the upper end of the connecting block 42 penetrates through the connection groove 43 and extends above the device base 1, the hydraulic lifting member 44 is arranged at the upper end of the connecting block 42, and the clamping mechanism is installed on the housing of the hydraulic lifting member 44.

[0032] Preferably, two sets of sliding mechanisms can share one sliding servo motor 4 and one rotating threaded rod 41, and two sections of threads with opposite directions are arranged on one rotating threaded rod 41, so that when one sliding servo motor 4 drives one rotating threaded rod 41 to rotate, the connecting blocks 42 of the two sets of sliding mechanisms can be simultaneously driven to move in a straight line close to or away from each other through the two sections of threads.

[0033] Under the restriction of the connection groove 43, the connection block 42 will not rotate with the rotating threaded rod 41, and the rotational motion of the rotating threaded rod 41 is converted into the axial linear motion of the connection block 42 along the rotating threaded rod 41 by thread transmission, thereby realizing the linear movement of the pipeline body 17. Preferably, the sliding servo motor 4 can be a bidirectional rotating motor, which can realize the mutual approach of the two pipeline bodies 17 during welding and the mutual distance of the pair of clamping mechanisms after the welding is completed.

[0034] Preferably, the hydraulic lifting member 44 can adopt equipment such as a hydraulic jack to facilitate bearing the weight of the pipeline body 17 and driving the pipeline body 17 to achieve the lifting function, so that the welding point of the pipeline body 17 and the welding head of the welding device body 19 are at the same height, which is convenient for welding operations.

[0035] Please see attached Figure 2 The clamping mechanism includes a connecting box 11, a sliding electric push rod 12, a rack 13, a gear 15 and a clamping rod 16; the connecting box 11 is installed on the outer shell of the hydraulic jacking component 44, a pair of sliding electric push rods 12 are respectively arranged on the connecting box 11 at intervals, a pair of racks 13 are respectively connected to the pair of sliding electric push rods 12, the gear 15 is rotatably arranged in the connecting box 11 through a wheel axle, and the top and bottom of the gear 15 are respectively meshed and connected with the pair of racks 13; a pair of slide grooves 14 are formed on the connecting box 11 at intervals, one end of a pair of clamping rods 16 respectively penetrates the pair of slide grooves 14 and is connected to the pair of racks 13, and the other ends of the pair of clamping rods 16 are respectively in an arc structure and clamped on both sides of the pipeline body 17.

[0036] A pair of sliding electric push rods 12 are installed in parallel and horizontally. When the push rods of the sliding electric push rods 12 are extended, they drive the racks 13 to move horizontally synchronously, so that the pair of racks 13 engage the transmission gear 15 when the top and bottom of the gear 15 move horizontally, ensuring the horizontal movement stability of the pair of racks 13.

[0037] A pair of clamping rods 16 translate synchronously with a pair of racks 13 , and a pair of slide grooves 14 are used to limit and guide the movement of the pair of clamping rods 16 , thereby further improving the movement stability of the pair of clamping rods 16 , so that the pair of clamping rods 16 can be stably clamped on both sides of the pipe body 17 , or detached from the pipe body 17 .

[0038] Please see attached Figure 4 The lifting and adjusting mechanism 2 includes a bracket 211 and a lifting mechanism. The bracket 211 is an inverted J-shaped structure. One end of the bracket 211 is installed on the top of the welder body 19, and the other end of the bracket 211 extends to above the welding head of the welder body 19. The lifting mechanism is embedded in the other end of the bracket 211, and the bottom of the lifting mechanism is connected to the protective cover 218 through the steering adjustment mechanism 3.

[0039] The bracket 211 is used to install the lifting mechanism so that the protective cover 218 can be located above the welding head of the welding device body 19, and the protective cover 218 has the function of lifting and adjusting the height to improve the shielding effect of sparks generated during welding.

[0040] Please see attached Figure 5 The lifting mechanism includes a lifting servo motor 212, a lifting threaded rod 213, a lifting block 214 and a lifting rod 216; the lifting servo motor 212 is installed on the top of the other end of the bracket 211, and the lifting threaded rod 213 is rotatably installed in the other end of the bracket 211 through a rotating bearing. The upper end of the lifting threaded rod 213 passes through the bracket 211 and is coaxially fixed with the output shaft of the lifting servo motor 212; a screw hole matching the lifting threaded rod 213 is formed on the lifting block 214, so that the lifting block 214 can be lifted and screwed on the lifting threaded rod 213, and a lifting groove 215 parallel to the lifting threaded rod 213 is formed on the other end of the bracket 211, and one end of the lifting block 214 slides through the lifting groove 215; the upper end of the lifting rod 216 is fixedly connected to the other end of the lifting block 214, and the lower end of the lifting rod 216 passes through the bottom of the other end of the bracket 211 and is connected to the steering adjustment mechanism 3.

[0041] When the lifting servo motor 212 rotates, it drives the lifting threaded rod 213 to rotate synchronously. Under the restriction of the lifting slot 215, the lifting block 214 does not rotate with the lifting threaded rod 213, so that the rotational motion of the lifting threaded rod 213 is converted into the linear motion of the lifting block 214 along the axial direction of the lifting threaded rod 213 by thread transmission, so that the lifting rod 216 drives the steering adjustment mechanism 3 and the protective cover 218 to move synchronously. Preferably, the lifting servo motor 212 can adopt a bidirectional rotating motor, and the different steering directions of the lifting servo motor 212 can be used to control the lifting and lowering of the protective cover 218, so as to realize the height adjustment function of the protective cover 218.

[0042] Please see attached Figure 6 The steering adjustment mechanism 3 includes a rotating servo motor 31, a worm 32, a worm wheel 33 and a connecting shaft 34; the rotating servo motor 31 is installed on the protective cover 218 through the outer shell, and one end of the worm 32 is coaxially fixedly connected to the output shaft of the rotating servo motor 31; the worm wheel 33 is rotatably installed in the outer shell through the connecting shaft 34 and is meshingly connected with the worm 32. The connecting shaft 34 is rotatably connected to the lower end of the lifting rod 216 through a rotating bearing, and the connecting shaft 34 is fixed to the protective cover 218 through an ear plate.

[0043] When the rotating servo motor 31 rotates, it drives the worm 32 to rotate synchronously. Through the meshing transmission of the worm 32 and the worm wheel 33, the worm wheel 33 is fixedly connected to the protective cover 218 through the connecting shaft 34 and the ear plate. Thus, when the worm wheel 33 rotates, it drives the protective cover 218 to rotate synchronously, realizing the adjustment of the angle of the protective cover 218 of the protective cover. Preferably, the rotating servo motor 31 can adopt a bidirectional rotating motor, and the rotation direction adjustment and rotation angle adjustment of the protective cover 218 are realized by using different rotation directions and different rotation turns of the rotating servo motor 31.

[0044] The size and shape of the protective cover 218 can be adaptively selected according to actual use requirements. Preferably, the protective cover 218 can adopt a transparent arc-shaped structure, and the protective effect is good.

[0045] Please refer to the appendix Figure 4 , a limiting groove 20 is formed on the device base 1, and the limiting groove 20 is arranged perpendicular to the connecting groove 43; the driving electric push rod 18 is installed on the device base 1 and extends into the device base 1 along the limiting groove 20, and the lower end of the welding torch body 19 penetrates through the limiting groove 20 and is connected to the driving electric push rod 18, so that the welding torch body 19 can be slidably arranged on the device base 1 along the limiting groove 20 through the driving electric push rod 18.

[0046] When the push rod of the driving electric push rod 18 extends, it can drive the welding torch body 19 to move along the limiting groove 20 and approach the pipe body 17, facilitating the welding operation of the pipe body 17. When the push rod of the driving electric push rod 18 retracts, it can drive the welding torch body 19 to move along the limiting groove 20 and away from the pipe body 17, facilitating the unloading of the pipe body 17.

[0047] Please refer to the appendix Figure 1 to the appendix Figure 6 , the usage method and working principle of the present utility model are as follows:

[0048] Place the device base 1 on the workbench or the ground, place a pipe body 17 to be welded between a pair of clamping rods 16, start a pair of sliding electric push rods 12, extend their push rods and drive a pair of racks 13 to move relatively. While the pair of racks 13 move relatively, the gear 15 rotates around its axle, so that the pair of racks 13 drive a pair of clamping rods 16 to move smoothly closer to and clamp the pipe body 17. Another pipe body 17 to be welded is clamped in the same way, and the clamping process is not described here again, so that the welding ends of the two pipe bodies 17 are arranged opposite to each other.

[0049] Start the sliding servo motor 4 to drive the rotating threaded rod 41 to rotate. Use screw drive to drive the connecting block 42 to move linearly along the axial direction of the rotating threaded rod 41, and drive the connecting box 11 to move linearly synchronously, so that the welding ends of the two pipe bodies 17 approach each other. According to the diameter of the pipe body 17, start the hydraulic lifting member 44 to control the height of the welding point of the pipe body 17 to be the same as the height of the welding head of the welding machine body 19.

[0050] Start the driving electric push rod 18 to push the welding head of the welding machine body 19 to move along the limiting groove 20 to the welding point of the pipe body 17. Start the lifting servo motor 212 to drive the lifting threaded rod 213 to rotate. Under the drive of the thread, the lifting block 214 moves up and down along the axial direction of the lifting threaded rod 213, so as to drive the lifting rod 216, the steering adjustment mechanism 3 and the protective cover 218 to move up and down synchronously, and adjust the protective cover 218 to an appropriate protective height.

[0051] Start the rotating servo motor 31 to drive the worm 32 to rotate synchronously. The worm 32 meshes with and drives the worm gear 33, and the worm gear 33 drives the ear plate and the protective cover 218 to rotate relative to the lifting rod 216 through the connecting shaft 34. Use the forward or reverse rotation of the rotating servo motor 31 to control the rotation direction and rotation angle of the protective cover 218 to achieve the best protective effect on the welding sparks.

[0052] Finally, start the welding machine body 19 to weld the two pipe bodies 17. The welding sparks splashed during welding are blocked by the protective cover 218, which will not cause harm to the operator and will not affect the operation efficiency.

[0053] After welding is completed, use the hoisting equipment to lift the pipe body 17. A pair of clamping rods 16 move reversely away from and disengage from the pipe body 17, and the load of the pipe body 17 is borne by the hoisting equipment and unloaded.

[0054] The above is only the preferred embodiment of the present invention, and is not used to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline welding protection device, characterized in that: It includes a device base (1), a lifting and adjusting mechanism (2), a protective cover (218), a steering adjusting mechanism (3), a sliding clamping assembly, and a welding torch body (19); the sliding clamping assembly is slidably arranged on the device base (1), a pair of sliding clamping assemblies are symmetrically arranged and respectively clamp two pipe bodies (17) to be welded, so that the welding ends of the two pipe bodies (17) can be coaxially abutted; the welding torch body (19) is slidably arranged on the device base (1), the sliding direction of the welding torch body (19) is perpendicular to the sliding direction of the sliding clamping assembly, and the welding torch body (19) is arranged facing the welding ends of the two pipe bodies (17); the lifting and adjusting mechanism (2) is installed on the top of the welding torch body (19), and the protective cover (218) is movably arranged on the lifting and adjusting mechanism (2) through the steering adjusting mechanism (3), so that the protective cover (218) can cover above the welding ends of the two pipe bodies (17).

2. The pipeline welding protection device according to claim 1, characterized in that: Each group of the sliding clamping assemblies includes a sliding mechanism and a clamping mechanism; the device base (1) is a hollow structure, a connecting groove (43) is formed on the top plate of the device base (1), one end of the sliding mechanism penetrates through the connecting groove (43) and is arranged in the hollow chamber of the device base (1), the other end of the sliding mechanism extends above the device base (1) and is connected to the clamping mechanism, so that the clamping mechanism is slidably arranged above the device base (1) along the connecting groove (43) through the sliding mechanism; the pipe body (17) is clamped on the clamping mechanism.

3. The pipeline welding protection device according to claim 2, characterized in that: The sliding mechanism includes a sliding servo motor (4), a rotating threaded rod (41), a connecting block (42), and a hydraulic lifting member (44); the sliding servo motor (4) is installed on the outer wall of the device base (1), the rotating threaded rod (41) is rotatably arranged in the hollow chamber of the device base (1), and one end of the rotating threaded rod (41) penetrates through the outer wall of the device base (1) and is coaxially fixed to the output shaft of the sliding servo motor (4); a threaded hole matching the rotating threaded rod (41) is formed at the bottom of the connecting block (42), so that the bottom of the connecting block (42) is slidably arranged in the hollow chamber of the device base (1) along the axial direction of the rotating threaded rod (41); the upper end of the connecting block (42) penetrates through the connecting groove (43) and extends above the device base (1), the hydraulic lifting member (44) is arranged at the upper end of the connecting block (42), and the clamping mechanism is installed on the housing of the hydraulic lifting member (44).

4. The pipeline welding protection device according to claim 3, characterized in that: The clamping mechanism described above includes a connection box (11), a sliding electric push rod (12), a rack (13), a gear (15), and a clamping rod (16); the connection box (11) is installed on the outer shell of the hydraulic lifting member (44), a pair of sliding electric push rods (12) are respectively arranged at intervals on the connection box (11), a pair of racks (13) are respectively connected to a pair of sliding electric push rods (12), the gear (15) is rotatably arranged in the connection box (11), and the top and bottom of the gear (15) are respectively in meshing transmission connection with a pair of racks (13); a pair of sliding grooves (14) are formed at intervals on the connection box (11), one ends of a pair of clamping rods (16) respectively penetrate through a pair of sliding grooves (14) and are connected to a pair of racks (13), and the other ends of a pair of clamping rods (16) are respectively in an arc structure and clamp on both sides of the pipeline main body (17).

5. The pipeline welding protection device according to claim 1, characterized in that: The lifting and adjusting mechanism (2) described above includes a bracket (211) and a lifting mechanism. The bracket (211) is in an inverted J-shaped structure. One end of the bracket (211) is installed on the top of the welder body (19), and the other end of the bracket (211) extends above the welding head of the welder body (19). The lifting mechanism is embedded in the other end of the bracket (211), and the bottom of the lifting mechanism is connected to the protective cover (218) through the steering adjustment mechanism (3).

6. The pipeline welding protection device according to claim 5, characterized in that: The lifting mechanism includes a lifting servo motor (212), a lifting threaded rod (213), a lifting block (214), and a lifting rod (216); the lifting servo motor (212) is installed on the top of the other end of the bracket (211), the lifting threaded rod (213) is rotatably installed in the other end of the bracket (211), the upper end of the lifting threaded rod (213) penetrates through the bracket (211) and is coaxially and fixedly connected to the output shaft of the lifting servo motor (212); a threaded hole matching the lifting threaded rod (213) is formed on the lifting block (214), so that the lifting block (214) is rotatably connected to the lifting threaded rod (213) in a liftable manner. A lifting groove (215) parallel to the lifting threaded rod (213) is formed on the other end of the bracket (211), and one end of the lifting block (214) slides through the lifting groove (215); the upper end of the lifting rod (216) is fixedly connected to the other end of the lifting block (214), and the lower end of the lifting rod (216) penetrates through the bottom of the other end of the bracket (211) and is connected to the steering adjustment mechanism (3).

7. The pipeline welding protection device according to claim 6, characterized in that: The steering adjustment mechanism (3) described above includes a rotating servo motor (31), a worm (32), a worm gear (33), and a connecting shaft (34); the rotating servo motor (31) is installed on the protective cover (218) through the outer shell, and one end of the worm (32) is coaxially and fixedly connected to the output shaft of the rotating servo motor (31); the worm gear (33) is rotatably installed in the outer shell through the connecting shaft (34) and is in meshing transmission connection with the worm (32). The connecting shaft (34) is rotatably connected to the lower end of the lifting rod (216), and the connecting shaft (34) is fixed to the protective cover (218) through an ear plate.

8. The pipeline welding protection device according to claim 2, characterized in that: A limiting groove (20) is formed on the device base (1), and the limiting groove (20) is arranged perpendicular to the connecting groove (43); the driving electric push rod (18) is installed on the device base (1) and extends into the device base (1) along the limiting groove (20), and the lower end of the welding torch body (19) penetrates through the limiting groove (20) and is connected to the driving electric push rod (18), so that the welding torch body (19) can be slidably arranged on the device base (1) along the limiting groove (20) through the driving electric push rod (18).

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