Welding device for gas pipeline construction

Abstract

The invention relates to the technical field of gas pipeline construction, in particular to a welding device for gas pipeline construction, which comprises a base, a left bracket, a left lifting frame, a welding gun, a middle bracket, a material box, a middle lifting frame, an overturning frame, a gear, a pneumatic clamping jaw, a rack, a worktable, a charging barrel and the like, a left lifting frame is connected to the left support in a sliding mode, a welding gun is fixedly installed on the left lifting frame, a material box used for storing steel pipes is fixedly connected to the middle support, a middle lifting frame is connected to the middle support in a sliding mode, the middle lifting frame is fixedly connected with the left lifting frame, an overturning frame is connected to the middle lifting frame in a rotating mode, and a gear is fixedly connected to the overturning frame. A pneumatic clamping jaw used for clamping a steel pipe is slidably connected to the overturning frame, a rack is fixedly connected to the middle support, the gear is matched with the rack to drive the steel pipe to rotate to be in a vertical state, and a material barrel used for storing flange plates is fixedly connected to the material box. According to the device, the steel pipe and the flange can be automatically butted and welded together, and the steps of manual operation are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gas pipeline construction, and in particular to a welding device for gas pipeline construction. Background Art

[0002] During the construction of gas pipelines, welded parts made of seamless steel pipes and flanges are often used. For example, in order to achieve the connection between the main pipeline and multiple branch pipelines, multiple welded parts need to be welded to the main pipeline, and then the flanges on the welded parts are fastened together with the flanges on the corresponding branch pipelines by bolts, so as to achieve the connection between the main pipeline and multiple branch pipelines.

[0003] During the construction of gas pipelines, welded parts of external steel pipes and flanges are often used. For example, in order to install valves or other equipment on the pipeline, it is necessary to first thread the external steel pipes on the two welded parts to the two ends of the valve, and then fasten the flange on one of the welded parts to the flange on the outlet pipe with bolts, and then fasten the flange on the other welded part to the flange on the inlet pipe with bolts.

[0004] At present, in the welding process, the steel pipe and the flange need to be manually butt-jointed together first, and then the worker uses a welding gun to manually weld, or uses an automatic welding machine for circumferential welding. However, both methods require the steel pipe and the flange to be manually butt-jointed together first, which reduces the efficiency of the welding process and may be affected by some subjective factors, such as work experience, work endurance, work mentality, etc., resulting in inaccurate butt-jointing problems, which in turn reduces the quality of the welded parts. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art that a steel pipe and a flange need to be manually butted together, and that the manual butt joint may not be accurate, the present invention provides a welding device for gas pipeline construction that can automatically butt a steel pipe and a flange.

[0006] The technical solution of the present invention is: a welding device for gas pipeline construction, comprising a base, a left bracket, a left lifting frame, a welding gun, a middle bracket, a material box, a middle lifting frame, a turning frame, a gear, a pneumatic clamp, a rack, a workbench, a barrel, a pushing plate and a material baffle plate. The left bracket and the middle bracket are fixedly connected to the base, the left lifting frame is slidably connected to the left bracket, the welding gun is fixedly installed on the left lifting frame, the middle bracket is fixedly connected to a material box for storing steel pipes, the middle bracket is slidably connected to the middle lifting frame, the middle lifting frame and the left lifting frame are fixedly connected, the middle lifting frame is rotatably connected to the turning frame, the gear is fixedly connected to the turning frame, the pneumatic clamp for clamping the steel pipe is slidably connected to the turning frame, the middle bracket is fixedly connected to a rack, the gear and the rack cooperate to drive the steel pipe to rotate to a vertical state, the material box is fixedly connected to a material barrel for storing flanges, the base is fixedly connected to a workbench, the workbench is slidably connected to a pushing plate for pushing a single flange, and the pushing plate is fixedly connected to a material baffle plate for preventing the flange in the barrel from falling downward.

[0007] Furthermore, it also includes a material control mechanism for preventing the steel pipe in the material box from falling out directly. The material control mechanism cooperates with the pneumatic clamp, and the material control mechanism includes a support plate, a No. 1 spring, a material control support rod, a claw, a torsion spring, a knob and a push rod. The material box is slidably connected with a support plate, a No. 1 spring is sleeved on the support plate, and a claw is rotatably connected to the support plate through the material control support rod. A torsion spring is connected between the claw and the material control support rod. The horizontal claw will prevent the upper steel pipe from falling downward. A knob is fixed on the claw, and a push rod is fixed on the pneumatic clamp. The push rod is used to squeeze the knob to drive the upper clamping plate to rotate upward so that the steel pipe can fall onto the claw.

[0008] Furthermore, the clamping claw includes a connecting buckle, an upper clamping plate and a lower clamping plate. The material control support rod is rotatably connected with the connecting buckle, the upper clamping plate is fixedly connected to the upper side of the connecting buckle, and the lower clamping plate is fixedly connected to the lower side of the connecting buckle, and the upper clamping plate and the lower clamping plate are arranged in parallel.

[0009] Furthermore, the width of the upper clamping plate is greater than that of the lower clamping plate, so that the upper clamping plate can prevent the upper steel pipe from falling downward when the support plates move away from each other.

[0010] Furthermore, it also includes an unlocking component that enables the steel pipe between the two claws to be taken out. The unlocking component is connected to the support plate. The unlocking component includes a driven block and an active block. The driven block is fixedly connected to the support plate, and the active block is fixedly connected to the pneumatic clamp. The active block and the driven block are squeezed together to drive the claws to no longer block the steel pipe from moving downward out of the material box.

[0011] Furthermore, it also includes a transmission mechanism for synchronously docking the steel pipe and the flange, the transmission mechanism is connected to the pushing plate, the transmission mechanism includes a transmission guide frame, a transmission slide shaft, a transmission slide rod, a connecting rod, a right bracket, a power-assisting guide rod and a No. 2 spring, the transmission guide frame is fixedly connected to the base, the transmission guide shaft is slidably connected in the slideway of the transmission guide frame, the transmission slide rod is slidably connected to the pushing plate, the upper side of the transmission slide rod is rotatably connected to the transmission slide shaft, the connecting rod is slidably connected to the base through the right bracket, the connecting rod is fixed to the middle lifting frame, the transmission slide shaft slides downward along the slideway, and the connecting rod pushes the connecting rod downward, the base is fixedly connected to a power-assisting guide rod for guiding the middle lifting frame, and a No. 2 spring is sleeved on the power-assisting guide rod.

[0012] Furthermore, it also includes a positioning mechanism for positioning and conveying steel pipes and flanges. The positioning mechanism is installed on a workbench. The positioning mechanism includes a positioning slide, a lower positioning rod, a first tension spring and an upper positioning rod. The workbench is slidably connected with a positioning slide, and a lower positioning rod for clamping and positioning the flange is slidably connected to the positioning slide. A first tension spring is connected between the lower positioning rod and the positioning slide, and an upper positioning rod for clamping and positioning the steel pipe is fixedly connected to the lower positioning rod.

[0013] Furthermore, it also includes an adjusting mechanism for driving the positioning mechanism to clamp the steel pipe and the flange, the adjusting mechanism is connected to the lower positioning rod, the adjusting mechanism includes an inner contact block, an upper block, a lower block, a No. 3 spring, an inclined plate, a pressure rod and an outer contact block, the lower positioning rod is fixedly connected with an inner contact block, the middle bracket is fixedly connected with an outer contact block, the outer contact block and the inner contact block are squeezed together to drive the lower positioning rod close to the flange, the inner contact block is fixedly connected with an upper block, the positioning slide plate is slidably connected with a lower block, the lower block is used to block the upper block to maintain the clamping of the flange and the steel pipe, the lower block is sleeved with a No. 3 spring, the lower block is fixedly connected with an inclined plate, the left bracket is fixedly connected with a pressure rod, the pressure rod is used to squeeze the inclined plate to drive the lower block to cancel the restriction on the upper block.

[0014] Furthermore, it also includes a rotating mechanism for driving the steel pipe and the flange to rotate, the rotating mechanism is connected to the left lifting frame, the rotating mechanism includes a rotating frame, a clamping guide plate, a No. 4 spring, a clamping block, a second tension spring, an outward expansion rod, a rotating motor and a turntable, the left lifting frame is rotatably connected to the rotating frame, two clamping guide plates are slidably connected to the rotating frame, the clamping guide plates are sleeved with a No. 4 spring, a clamping block for clamping the steel pipe is slidably connected to the clamping guide plates, a second tension spring is connected between the two clamping blocks, the rotating frame is fixedly connected with an outward expansion rod, the outward expansion rod is used to squeeze the two clamping blocks to clamp the steel pipe, the left lifting frame is fixedly connected with a rotating motor for driving the rotating frame to rotate, and the workbench is rotatably connected to the turntable.

[0015] Furthermore, it also includes a bidirectional lead screw, a drive plate and an active motor for driving the pushing plate and the positioning slide. The workbench is rotatably connected with the bidirectional lead screw, the bidirectional lead screw and the positioning slide are threadedly connected, the bidirectional lead screw is also threadedly connected to the drive plate, the drive plate and the pushing plate are fixedly connected, the bidirectional lead screw is used to drive the pushing plate and the positioning slide to move toward each other, and the workbench is fixedly connected with an active motor for driving the bidirectional lead screw.

[0016] The beneficial effects of the present invention are as follows: the device can automatically butt and weld the steel pipe and the flange together, reducing the steps of manual operation, not only improving the efficiency and quality of the welding process, but also solving the problem of inaccurate butt connection caused by improper manual operation.

[0017] The rack meshes with the gear to drive the steel pipe to rotate to a vertical state when the flip frame moves downward, and the push plate can push the flange on the workbench to the bottom of the steel pipe, so that the two can be docked during the downward movement of the steel pipe and the horizontal movement of the flange, which effectively improves the docking efficiency; When the flip frame drives the pneumatic clamp to move upward, the push rod rotates the clamp upward by squeezing the knob, so that the steel pipe in the material box can fall on the clamp. When the pneumatic clamp clamps the steel pipe, the clamp will reset under the action of the torsion spring to continue to prevent the upper steel pipe from falling downward, and the active block will squeeze the driven block to move the clamp away from the bottom of the steel pipe on it, so that the flip frame can realize the function of single feeding of the steel pipe through the pneumatic clamp. When the push plate moves, it drives the transmission slide shaft to press the connection rod downward through the transmission slide rod, so that the connection rod can drive the flip frame and the welding gun to move downward synchronously, which not only realizes the function of synchronously connecting the steel pipe and the flange, but also drives the welding gun to move downward to weld the connected steel pipe and flange together; When the positioning slide plate moves toward the bottom of the material box, the outer contact block will squeeze the inner contact block to clamp the lower positioning rod and the upper positioning rod to position the flange and the steel pipe, and the lower block will block the upper block to keep the lower positioning rod and the upper positioning rod in a clamped state, so that the positioning slide plate can drive the butted flange and the steel pipe to move toward the bottom of the welding gun, and the pressure rod will squeeze the inclined plate downward to make the lower block cancel the blockage of the upper block, so that the steel pipe and the flange are automatically released when they move to the bottom of the welding gun.

[0018] The expansion rod squeezes the clamping block to clamp it from the inside of the steel pipe, so that the rotating motor can drive the steel pipe and flange to rotate to achieve welding. The automated rotation method can ensure the uniformity and quality of the welding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the position relationship of the pressure rod of the present invention.

[0021] Figure 3 It is a schematic diagram of the position relationship of the middle lifting frame of the present invention.

[0022] Figure 4 It is a schematic diagram of the position relationship of the support plates of the present invention.

[0023] Figure 5 It is a schematic diagram of the position relationship of the ejector rod of the present invention.

[0024] Figure 6 It is a schematic diagram of the position relationship of the knobs of the present invention.

[0025] Figure 7 Schematic diagram of two states of the clamping claw of the present invention.

[0026] Figure 8 It is a schematic diagram of the position relationship of the push plate of the present invention.

[0027] Fig. 9 It is a schematic diagram of the bidirectional lead screw connection relationship of the present invention.

[0028] Fig.10 Schematic diagram of two states of the clamping claw of the present invention.

[0029] Fig.11 It is a schematic diagram of the structure of the clamping block of the present invention.

[0030] Fig.12 It is a schematic diagram of the construction application of the welding piece of the present invention.

[0031] The meanings of the reference numerals in the figure are as follows: 1: base, 101: left bracket, 102: left lifting frame, 103: welding gun, 104: middle bracket, 105: material box, 106: middle lifting frame, 107: flip frame, 108: gear, 109: pneumatic clamp, 110: rack, 111: workbench, 2: support plate, 201: No. 1 spring, 202: material control support rod, 203: connecting buckle, 204: torsion spring, 205: knob, 206: upper clamping plate, 207: lower clamping plate, 208: ejector rod, 3: driven block, 301: active block, 4: barrel, 401: push plate, 402: material blocking plate, 5: transmission guide frame, 501: transmission slide shaft, 502: transmission Moving slide rod, 503: connecting rod, 504: right bracket, 505: power guide rod, 506: No. 2 spring, 6: positioning slide plate, 601: lower positioning rod, 602: first tension spring, 603: upper positioning rod, 7: inner contact block, 701: upper block, 702: lower block, 703: No. 3 spring, 704: inclined plate, 705: pressure rod, 706: outer contact block, 8: rotating frame, 801: clamping guide plate, 802: No. 4 spring, 803: clamping block, 804: second tension spring, 805: outer expansion rod, 806: rotating motor, 807: turntable, 9: bidirectional screw, 901: driving plate, 902: active motor, 10: steel pipe, 11: flange. DETAILED DESCRIPTION

[0032] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] Embodiment 1: A welding device for gas pipeline construction, as 1, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Fig.12As shown, it includes a base 1, a left bracket 101, a left lifting frame 102, a welding gun 103, a middle bracket 104, a material box 105, a middle lifting frame 106, a flip frame 107, a gear 108, a pneumatic clamp 109, a rack 110, a workbench 111, a barrel 4, a push plate 401 and a material blocking plate 402. The left bracket 101 is fixedly connected to the base 1, and the left lifting frame 102 is slidably connected to the left bracket 101 in a vertical direction. The welding gun 103 is fixedly installed on the left lifting frame 102. The welding gun 103 The base 1 is fixed with a middle bracket 104, and a material box 105 is fixed with the middle bracket 104. The material box 105 is used to place the steel pipe 10 to be welded. The middle bracket 104 is symmetrically connected to two middle lifting frames 106 for sliding. The middle lifting frames 106 are fixed to the left lifting frame 102, and the middle lifting frames 106 slide in the vertical direction. The middle lifting frames 106 are rotatably connected to a flip frame 107, and a gear 108 is fixed to the rotating shaft of the flip frame 107. The gear 108 is on the flip frame 107. One side is connected with a pneumatic clamp 109 in a horizontal sliding direction. The pneumatic clamp 109 is a prior art. The pneumatic clamp 109 is used to clamp the steel pipe 10 in the material box 105. Two racks 110 are symmetrically fixed on the middle bracket 104. During the downward movement of the middle lifting frame 106, the gear 108 cooperates with the rack 110 to drive the flip frame 107 to rotate 90 degrees, so that the steel pipe 10 can be rotated to a vertical state to dock with the flange 11 downward. The side of the material box 105 away from the left lifting frame 102 is fixed. A barrel 4 is connected, and a flange 11 to be welded is placed inside the barrel 4. The distance between the barrel 4 and the workbench 111 only allows one horizontally placed flange 11 to pass through. The base 1 is fixedly connected to the workbench 111, and a pushing plate 401 is slidably connected to the workbench 111 along the length direction. The pushing plate 401 is used to push the flange 11 that falls on the workbench 111 to the bottom of the material box 105. A blocking plate 402 is fixedly connected to the pushing plate 401 for preventing the flange 11 in the barrel 4 from falling downward.

[0034] The steel pipes 10 to be welded are stacked and placed in the material box 105 in advance, and the steel pipes 10 are placed horizontally, and the flanges 11 to be welded are stacked and placed in the barrel 4. The flange 11 at the bottom will fall onto the workbench 111. When the welding process starts, the pneumatic clamp 109 is first controlled to approach and clamp the steel pipe 10 at the bottom of the material box 105, and then the middle lifting frame 106 and the left lifting frame 102 are controlled to move downward. During the downward movement, the gear 108 will engage with the rack 110, so that the gear 108 drives the flip frame 107 to rotate ninety degrees, thereby driving the steel pipe 10 to rotate to a vertical state through the pneumatic clamp 109 to facilitate docking with the flange 11 below. At the same time, the pushing plate 401 is controlled to push the flange 11 that falls on the workbench 111 to the bottom of the material box 105, so as to dock the steel pipe 10 and the flange 11 together, and the flange 11 is pushed on the pushing plate 401. During the process, the material blocking plate 402 will prevent the flange 11 in the material box 105 from falling downward onto the workbench 111 to avoid affecting the reset of the pushing plate 401. When the steel pipe 10 is placed on the flange 11 below, the pneumatic clamp 109 is controlled to loosen the clamping of the steel pipe 10, and then the middle lifting frame 106 and the left lifting frame 102 are controlled to reset upward, and the pushing plate 401 is controlled to reset in the direction of the barrel 4. At the same time, the butt-jointed steel pipe 10 and the flange 11 are pushed to the bottom of the welding gun 103. After the pushing plate 401 is reset, the flange 11 in the barrel 4 falls downward onto the workbench 111, so as to be pushed to the bottom of the material box 105 again; after the left lifting frame 102 moves downward, the welding gun 103 will be aimed at the butt joint of the steel pipe 10 and the flange 11, and then the welding gun 103 is started to start welding, and the flange 11 and the steel pipe 10 are rotated at the same time, so as to realize the welding of the entire butt joint; Fig.12 The figure shows the usage status of the weldment.

[0035] like Figure 3-Figure 7As shown, it also includes a material control mechanism for preventing the steel pipe 10 in the material box 105 from falling out directly. The material control mechanism cooperates with the pneumatic clamp 109. The material control mechanism includes a support plate 2, a No. 1 spring 201, a material control support rod 202, a clamping claw, a torsion spring 204, a knob 205 and a push rod 208. There are two support plates 2 symmetrically slidably connected on the material box 105. The support plates 2 slide in the horizontal direction. A No. 1 spring 201 is sleeved on the guide shaft of the support plate 2. When the two support plates 2 move back to back, the No. 1 spring 201 will be compressed. The back ends of the two support plates 2 are fixedly connected with a material control support rod 202. There are two clamping claws symmetrically connected to the material control support rod 202. The clamping claws are U-shaped. The clamping claws in the horizontal state cannot rotate downward, and the two clamping claws are arranged relatively to each other. A torsion spring 204 is sleeved on the rotating shaft of the claw, one end of which is fixedly connected to the material control support rod 202, and the other end of the torsion spring 204 is fixedly connected to the claw. The torsion spring 204 is used to keep the claw in a horizontal state. The horizontal claw will prevent the upper steel pipe 10 from falling downward, and only one steel pipe 10 can be accommodated between the two claws. A knob 205 is fixedly connected to the claw, and a push rod 208 is fixedly connected to the pneumatic clamp 109. The pneumatic clamp 109 drives the push rod 208 to move upward and contact the eccentric position of the knob 205, and squeezes the knob 205 to drive the upper clamping plate 206 to rotate upward, so that the upper steel pipe 10 can fall between the two claws, and when the pneumatic clamp 109 approaches the steel pipe 10, the push rod 208 will be out of contact with the knob 205.

[0036] The torsion spring 204 will keep the claws in a horizontal state, and since the claws in a horizontal state cannot rotate downward, when the steel pipe 10 is placed in the material box 105, it will be blocked by the claws, so that the steel pipe 10 cannot fall from the material box 105; when the middle lifting frame 106 drives the pneumatic clamp 109 to move upward, the top rod 208 will contact the eccentric position of the knob 205, and by squeezing the knob 205, it drives the claws to rotate upward, so that the upper steel pipe 10 can fall between the two claws. When the claws rotate, the torsion spring 204 will accumulate force, and then control the pneumatic clamp 1 09 approaches and clamps the steel pipe 10, the pneumatic clamp 109 will drive the push rod 208 and the knob 205 to disengage, the knob 205 and the claw will rotate and reset to a horizontal state under the action of the torsion spring 204, the steel pipe 10 at the bottom will be stuck between the two claws, and the upper steel pipe 10 will be blocked by the claws and cannot continue to fall downward, and then the two support plates 2 will move away from each other so that the pneumatic clamp 109 can transport the steel pipe 10 between the two claws downward, and when the steel pipe 10 is moved out from between the two claws, the No. 1 spring 201 pushes the support plate 2 to reset.

[0037] like Figure 6 and Figure 7As shown, the clamping claw includes a connecting buckle 203, an upper clamping plate 206 and a lower clamping plate 207. The material control support rod 202 is symmetrically connected to two connecting buckles 203 for rotation. One end of the torsion spring 204 is fixed to the connecting buckle 203. The upper clamping plate 206 is fixed to the upper side of the connecting buckle 203, and the lower clamping plate 207 is fixed to the lower side of the connecting buckle 203. The upper clamping plate 206 and the lower clamping plate 207 are both located on the opposite side of the two connecting buckles 203, and the upper clamping plate 206 and the lower clamping plate 207 are arranged in parallel.

[0038] When the upper clamping plate 206 and the lower clamping plate 207 are both in a horizontal state, only one steel pipe 10 can be accommodated between the two sets of upper clamping plates 206 and lower clamping plates 207, and the upper clamping plate 206 will prevent the upper steel pipe 10 from falling downward.

[0039] like Figure 6 As shown, the width of the upper clamping plate 206 is greater than that of the lower clamping plate 207, so that the upper clamping plate 206 can continue to prevent the upper steel pipe 10 from falling downward after the support plates 2 move away from each other.

[0040] When the two support plates 2 move back to back, since the width of the upper clamping plate 206 is greater than that of the lower clamping plate 207, when the lower clamping plate 207 moves away from under the steel pipe 10, the upper clamping plate 206 can still block the upper steel pipe 10 from falling, preventing the upper steel pipe 10 from falling out of the material box 105 together, thereby realizing the function of single loading.

[0041] like Figure 4-Figure 6 As shown, it also includes an unlocking component that enables the steel pipe 10 between the two claws to be taken out. The unlocking component is connected to the support plate 2. The unlocking component includes a driven block 3 and an active block 301. Two driven blocks 3 are symmetrically fixed to the support plate 2. The active block 301 is fixed to the pneumatic clamp 109. The active block 301 and the driven block 3 are squeezed together to drive the support plate 2 to move away from each other, so that the claws no longer block the steel pipe 10 from moving downward out of the material box 105.

[0042] When the pneumatic clamp 109 approaches and clamps the steel pipe 10, it will drive the active block 301 to squeeze the driven block 3, and by squeezing the driven block 3, the two support plates 2 will move away from each other. During the downward movement of the middle lifting frame 106, when the steel pipe 10 moves to below the lower clamping plate 207, the active block 301 will disengage from the driven block 3, so that the support plate 2 can be reset under the action of the No. 1 spring 201.

[0043] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 3 and Figure 8As shown, it also includes a transmission mechanism for synchronously docking the steel pipe 10 and the flange 11, the transmission mechanism is connected to the push plate 401, the transmission mechanism includes a transmission guide frame 5, a transmission slide shaft 501, a transmission slide rod 502, a connecting rod 503, a right bracket 504, a power guide rod 505 and a second spring 506, two transmission guide frames 5 are symmetrically fixed on the base 1, an inclined slideway is provided on the transmission guide frame 5, and the height of one end of the slideway close to the middle bracket 104 is lower than that of the other end, a transmission slide shaft 501 is slidably connected in the slideway, and two transmission slide rods 502 are symmetrically slidably connected on the push plate 401, and the transmission slide rod 502 slides in the vertical direction, and the upper side of the transmission slide rod 502 and the adjacent transmission The sliding shaft 501 is rotatably connected, and two right brackets 504 are symmetrically fixed on the base 1. A connecting rod 503 is slidably connected to the right bracket 504 in the vertical direction. The connecting rod 503 is fixed to the middle lifting frame 106 on the same side. When the pushing plate 401 pushes the flange 11 to the bottom of the material box 105, the transmission sliding shaft 501 slides downward along the slideway, and the transmission sliding shaft 501 pushes the connecting rod 503 downward. Four power-assisting guide rods 505 are symmetrically fixed on the base 1, and each two power-assisting guide rods 505 form a group. The middle lifting frame 106 is slidably connected to a group of power-assisting guide rods 505 on the same side. A No. 2 spring 506 is sleeved on the power-assisting guide rod 505. When the middle lifting frame 106 moves downward, the No. 2 spring 506 will be compressed.

[0044] When the pushing plate 401 moves toward the bottom of the material box 105, it will drive the transmission slide shaft 501 to slide along the transmission guide frame 5 through the transmission slide rod 502. The transmission slide shaft 501 will press the connecting rod 503 downward, and the connecting rod 503 will drive the middle lifting frame 106 and the left lifting frame 102 to slide downward, thereby synchronously driving the pushing plate 401 to push the flange 11 to the bottom of the material box 105, the pneumatic clamp 109 to convey the steel pipe 10 and the welding gun 103 downward, and the middle lifting frame 106 will compress the No. 2 spring 506 when it moves downward. In the process of resetting the pushing plate 401 toward the direction of the barrel 4, the No. 2 spring 506 will push the left lifting frame 102, the middle lifting frame 106 and the connecting rod 503 to reset upward.

[0045] like Figure 8-Figure 10As shown, it also includes a positioning mechanism for positioning and conveying the steel pipe 10 and the flange 11. The positioning mechanism is installed on the workbench 111. The positioning mechanism includes a positioning slide 6, a lower positioning rod 601, a first tension spring 602 and an upper positioning rod 603. The workbench 111 is slidably connected with a positioning slide 6 along the length direction. Two lower positioning rods 601 are symmetrically slidably connected on the positioning slide 6. The lower positioning rod 601 is used to clamp and position the flange 11. The first tension spring 602 is sleeved on the guide shaft of the lower positioning rod 601. One end of the first tension spring 602 is fixedly connected to the lower positioning rod 601, and the other end of the first tension spring 602 is fixedly connected to the positioning slide 6. When the two lower positioning rods 601 move relative to each other, the first tension spring 602 will be stretched. The upper positioning rod 603 is fixedly connected to the upper side of the lower positioning rod 601. The upper positioning rod 603 is used to clamp and position the steel pipe 10.

[0046] When the pushing plate 401 pushes the flange 11 to the bottom of the material box 105, the positioning slide plate 6 is controlled to slide to the bottom of the material box 105. When the upper positioning rod 603 is about to be concentric with the steel pipe 10, the lower positioning rods 601 on both sides move relative to each other. When the lower positioning rods 601 move relative to each other, the first tension spring 602 will be stretched, and the upper positioning rod 603 will also move relative to each other, so that the lower positioning rod 601 clamps the flange 11, and the upper positioning rod 603 clamps the steel pipe 10, thereby realizing the function of positioning and clamping the flange 11 and the steel pipe 10. When the pushing plate 401 is reset toward the direction of the barrel 4, the positioning slide plate 6 is controlled to reset to the bottom of the welding gun 103, and the lower positioning rod 601 and the upper positioning rod 603 drive the clamped steel pipe 10 and the flange 11 to move to the bottom of the welding gun 103, and push the previous welded steel pipe 10 and the flange 11 away from the workbench 111.

[0047] like Figure 2 , Figure 3 and Fig.10As shown, it also includes an adjustment mechanism for driving the positioning mechanism to clamp the steel pipe 10 and the flange 11, the adjustment mechanism is connected to the lower positioning rod 601, the adjustment mechanism includes an inner contact block 7, an upper block 701, a lower block 702, a third spring 703, an inclined plate 704, a pressure rod 705 and an outer contact block 706, the opposite ends of the two lower positioning rods 601 are fixedly connected to the inner contact block 7, the outer contact block 706 is fixedly connected to the middle bracket 104, the outer contact block 706 is used to squeeze the inner contact block 7 to drive the lower positioning rod 601 close to the flange 11, the lower end of the inner contact block 7 is fixedly connected to the upper block 701, and the positioning slide plate 6 slides along the vertical direction to connect A lower stopper 702 is connected. When the lower positioning rod 601 approaches the flange 11, the upper stopper 701 will squeeze the lower stopper 702 downward. The lower stopper 702 blocks the upper stopper 701 to keep the lower positioning rod 601 clamped on the flange 11. A No. 3 spring 703 is sleeved on the guide shaft of the lower stopper 702. When the lower stopper 702 moves downward, the No. 3 spring 703 will be compressed. The lower end of the lower stopper 702 is fixedly connected to an inclined panel 704. Two pressure rods 705 are symmetrically fixedly connected to the left bracket 101. The pressure rods 705 are used to squeeze the inclined panel 704 downward to drive the lower stopper 702 to cancel the restriction on the upper stopper 701.

[0048] During the sliding of the positioning slide 6 toward the bottom of the material box 105, when the upper positioning rod 603 is about to be concentric with the steel pipe 10, the outer contact block 706 will begin to squeeze the inner contact block 7 in the direction of the lower positioning rod 601, thereby driving the lower positioning rod 601 and the upper positioning rod 603 to clamp the steel pipe 10 and the flange 11. During the movement of the inner contact block 7 and the lower positioning rod 601, the upper block 701 will first squeeze the lower block 702 downward and compress the No. 3 spring 703. When the lower positioning rod 601 clamps the flange 11, the upper block 701 just breaks away from the contact with the lower block 702. The lower block 702 resets upward under the action of the No. 3 spring 703 to block the upper block 7 01 moves in the direction away from the lower positioning rod 601, so that the lower positioning rod 601 and the upper positioning rod 603 maintain the clamping of the steel pipe 10 and the flange 11, and the first tension spring 602 remains in a compressed and stretched state; during the reset process of the positioning slide 6 to the bottom of the welding gun 103, the pressure rod 705 will contact the inclined plate 704, and the pressure rod 705 will press the inclined plate 704 downward to move the lower stop block 702 downward, and will compress the No. 3 spring 703. When the lower stop block 702 moves to below the upper stop block 701, the first tension spring 602 drives the lower positioning rod 601 and the upper positioning rod 603 to loosen the clamping of the steel pipe 10 and the flange 11.

[0049] Embodiment 3: Based on embodiment 2, Figure 2 and Fig.11As shown, it also includes a rotating mechanism for driving the steel pipe 10 and the flange 11 to rotate, the rotating mechanism is connected to the left lifting frame 102, the rotating mechanism includes a rotating frame 8, a clamping guide plate 801, a fourth spring 802, a clamping block 803, a second tension spring 804, an outward expansion rod 805, a rotating motor 806 and a turntable 807, the left lifting frame 102 is rotatably connected to the rotating frame 8, and two clamping guide plates 801 are slidably connected to the rotating frame 8 in the vertical direction, and a fourth spring 802 is sleeved on the guide shaft of the clamping guide plate 801. When the clamping guide plate 801 moves upward, it will The No. 4 spring 802 is compressed, and a clamping block 803 for clamping the steel pipe 10 from the inside is slidably connected to the clamping guide plate 801 in the horizontal direction. A second tension spring 804 is connected between the two clamping blocks 803. An outward expansion rod 805 is fixedly connected to the rotating frame 8. When the rotating frame 8 approaches the clamping guide plate 801, the outward expansion rod 805 will drive the two clamping blocks 803 to move in opposite directions to clamp the steel pipe 10. A rotating motor 806 is fixedly connected to the left lifting frame 102, and the output shaft of the rotating motor 806 is fixedly connected to the rotating frame 8. A turntable 807 is rotatably connected to the workbench 111.

[0050] When the left lifting frame 102 moves downward, it will drive the expansion rod 805 to enter the interior of the steel pipe 10, and the clamping guide plate 801 will contact the top of the steel pipe 10, and then the left lifting frame 102 will continue to move downward. Since the clamping guide plate 801 is blocked by the steel pipe 10, the rotating frame 8 will move downward relative to the clamping guide plate 801 and compress the No. 4 spring 802. At this time, the expansion rod 805 will squeeze the two clamping blocks 803, and the two clamping blocks 803 move away from each other to fit closely to the inner wall of the steel pipe 10, thereby clamping the steel pipe 10 from the inside and stretching the second tension spring 804. When the welding gun 103 starts welding, the rotating motor 806 is started, and the rotating motor 806 is rotated by The clamping block 803 drives the steel pipe 10, the flange 11 and the turntable 807 to rotate synchronously, so that the welding gun 103 can complete the welding of the entire circular butt joint; when the left lifting frame 102 moves upward, since the No. 4 spring 802 is in a compressed state, the rotating frame 8 will move upward first, and the clamping guide plate 801 will maintain contact with the top of the steel pipe 10, and the outward expansion rod 805 will first move upward relative to the clamping guide plate 801, so that the second tension spring 804 can drive the two clamping blocks 803 to move relative to each other, thereby causing the clamping blocks 803 to break contact with the inner wall of the steel pipe 10. When the No. 4 spring 802 recovers, the left lifting frame 102 drives the rotating frame 8 and the clamping guide plate 801 to reset upward synchronously.

[0051] like Figure 8 and Fig. 9As shown, it also includes a bidirectional lead screw 9, a drive plate 901 and an active motor 902 for driving the push plate 401 and the positioning slide 6. The lower side of the workbench 111 is rotatably connected to the bidirectional lead screw 9. Two threads are symmetrically provided on the bidirectional lead screw 9, one of which is threadedly connected to the positioning slide 6, and the other thread is threadedly connected to the drive plate 901. The drive plate 901 and the push plate 401 are fixedly connected. When the bidirectional lead screw 9 rotates, it will drive the push plate 401 and the positioning slide 6 to move toward each other. The active motor 902 is fixedly connected to the workbench 111, and the output shaft of the active motor 902 is fixedly connected to the bidirectional lead screw 9.

[0052] When the active motor 902 drives the bidirectional lead screw 9 to rotate forward, it drives the driving plate 901 and the positioning slide 6 to move in opposite directions. When the bidirectional lead screw 9 rotates reversely, it drives the driving plate 901 and the positioning slide 6 to move relative to each other.

[0053] Although the present invention is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications may be made to the present invention without departing from the principle and spirit of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the present invention, but the scope of protection is limited by the content of the claims.

Claims

1. A welding device for gas pipeline construction, comprising a base (1), a left bracket (101) and a middle bracket (104), wherein the left bracket (101) and the middle bracket (104) are fixedly connected to the base (1), and wherein: The machine also comprises a left lifting frame (102), a welding gun (103), a material box (105), a middle lifting frame (106), a turning frame (107), a gear (108), a pneumatic clamp (109), a rack (110), a workbench (111), a barrel (4), a pushing plate (401) and a material blocking plate (402); the left lifting frame (102) is slidably connected to the left bracket (101); the welding gun (103) is fixedly mounted on the left lifting frame (102); a material box (105) for storing steel pipes (10) is fixedly connected to the middle bracket (104); the middle lifting frame (106) is slidably connected to the middle bracket (104); the middle lifting frame (106) is fixedly connected to the left lifting frame (102); and the middle lifting frame (106) is rotatably connected to the left lifting frame (102). A turning frame (107) is provided, a gear (108) is fixedly connected to the turning frame (107), a pneumatic clamp (109) for clamping a steel pipe (10) is slidably connected to the turning frame (107), a rack (110) is fixedly connected to the middle bracket (104), the gear (108) and the rack (110) cooperate to drive the steel pipe (10) to rotate to a vertical state, a barrel (4) for storing a flange (11) is fixedly connected to the material box (105), a workbench (111) is fixedly connected to the base (1), a pushing plate (401) for pushing a single flange (11) is slidably connected to the workbench (111), and a material blocking plate (402) for preventing the flange (11) in the barrel (4) from falling downward is fixedly connected to the pushing plate (401).

2. A welding device for gas pipeline construction according to claim 1, characterized in that: The material box (105) also includes a material control mechanism for preventing the steel pipe (10) in the material box (105) from falling out directly. The material control mechanism cooperates with the pneumatic clamp (109). The material control mechanism includes a support plate (2), a No. 1 spring (201), a material control support rod (202), a clamping claw, a torsion spring (204), a knob (205) and a push rod (208). The material box (105) is slidably connected to the support plate (2). The support plate (2) is sleeved with a No. 1 spring (201). The support plate (2) 2) A clamping claw is rotatably connected to the material control support rod (202), a torsion spring (204) is connected between the clamping claw and the material control support rod (202), the clamping claw in a horizontal state will prevent the upper steel pipe (10) from falling downward, a knob (205) is fixedly connected to the clamping claw, and a push rod (208) is fixedly connected to the pneumatic clamping claw (109), and the push rod (208) is used to squeeze the knob (205) to drive the upper clamping plate (206) to rotate upward, so that the steel pipe (10) can fall onto the clamping claw.

3. A welding device for gas pipeline construction according to claim 2, characterized in that: The clamping claw comprises a connecting buckle (203), an upper clamping plate (206) and a lower clamping plate (207); the connecting buckle (203) is rotatably connected to the material control support rod (202); the upper side of the connecting buckle (203) is fixedly connected to the upper clamping plate (206); the lower side of the connecting buckle (203) is fixedly connected to the lower clamping plate (207); and the upper clamping plate (206) and the lower clamping plate (207) are arranged in parallel.

4. A welding device for gas pipeline construction according to claim 3, characterized in that: The width of the upper clamping plate (206) is greater than the width of the lower clamping plate (207), so that the upper clamping plate (206) can prevent the upper steel pipe (10) from falling downward when the support plates (2) move away from each other.

5. A welding device for gas pipeline construction according to claim 4, characterized in that: The invention also comprises an unlocking assembly for enabling the steel pipe (10) between the two clamping jaws to be removed, the unlocking assembly being connected to the support plate (2), the unlocking assembly comprising a driven block (3) and an active block (301), the driven block (3) being fixedly connected to the support plate (2), the active block (301) being fixedly connected to the pneumatic clamping jaw (109), the active block (301) and the driven block (3) being pressed together to drive the clamping jaws to no longer block the steel pipe (10) from moving downward out of the material box (105).

6. A welding device for gas pipeline construction according to claim 2, characterized in that: The invention also comprises a transmission mechanism for synchronously connecting the steel pipe (10) and the flange (11), the transmission mechanism being connected to the push plate (401), the transmission mechanism comprising a transmission guide frame (5), a transmission sliding shaft (501), a transmission sliding rod (502), a connecting rod (503), a right bracket (504), a power-assisting guide rod (505) and a second spring (506), the base (1) being fixedly connected with the transmission guide frame (5), the transmission sliding shaft (501) being slidably connected in the slideway of the transmission guide frame (5), and the push plate (401) being slidably connected with the transmission sliding shaft (501). A transmission slide bar (502) is provided, the upper side of the transmission slide bar (502) is rotatably connected to the transmission slide shaft (501), a connecting rod (503) is slidably connected to the base (1) through a right bracket (504), the connecting rod (503) is fixedly connected to the middle lifting frame (106), and when the transmission slide shaft (501) slides downward along the slideway, the connecting rod (503) is pushed downward, and an assist guide rod (505) for guiding the middle lifting frame (106) is fixedly connected to the base (1), and a second spring (506) is sleeved on the assist guide rod (505).

7. A welding device for gas pipeline construction according to claim 1, characterized in that: The invention also comprises a positioning mechanism for positioning and conveying the steel pipe (10) and the flange (11), the positioning mechanism being installed on the workbench (111), the positioning mechanism comprising a positioning slide plate (6), a lower positioning rod (601), a first tension spring (602) and an upper positioning rod (603), the workbench (111) being slidably connected with the positioning slide plate (6), the positioning slide plate (6) being slidably connected with the lower positioning rod (601) for clamping and positioning the flange (11), the first tension spring (602) being connected between the lower positioning rod (601) and the positioning slide plate (6), and the lower positioning rod (601) being fixedly connected with the upper positioning rod (603) for clamping and positioning the steel pipe (10).

8. A welding device for gas pipeline construction according to claim 7, characterized in that: The invention also includes an adjustment mechanism for driving the positioning mechanism to clamp the steel pipe (10) and the flange (11). The adjustment mechanism is connected to the lower positioning rod (601). The adjustment mechanism includes an inner contact block (7), an upper stop block (701), a lower stop block (702), a third spring (703), an inclined plate (704), a pressure rod (705) and an outer contact block (706). The lower positioning rod (601) is fixedly connected with the inner contact block (7), and the middle bracket (104) is fixedly connected with the outer contact block (706). The outer contact block (706) and the inner contact block (7) are pressed together to drive the lower positioning rod (601) to approach the flange. (11), an upper stopper (701) is fixedly connected to the inner contact block (7), a lower stopper (702) is slidably connected to the positioning slide plate (6), the lower stopper (702) is used to block the upper stopper (701) to maintain the clamping of the flange (11) and the steel pipe (10), a No. 3 spring (703) is sleeved on the lower stopper (702), an inclined panel (704) is fixedly connected to the lower stopper (702), and a pressure rod (705) is fixedly connected to the left bracket (101), the pressure rod (705) is used to squeeze the inclined panel (704) to drive the lower stopper (702) to cancel the restriction on the upper stopper (701).

9. A welding device for gas pipeline construction according to claim 1, characterized in that: The invention also includes a rotating mechanism for driving the steel pipe (10) and the flange (11) to rotate, the rotating mechanism being connected to the left lifting frame (102), the rotating mechanism comprising a rotating frame (8), a clamping guide plate (801), a fourth spring (802), a clamping block (803), a second tension spring (804), an outward expansion rod (805), a rotating motor (806) and a turntable (807), the left lifting frame (102) being rotatably connected to the rotating frame (8), the rotating frame (8) being slidably connected to two clamping guide plates (801), the clamping guide plates (801) being arranged on the rotating frame (806). A No. 4 spring (802) is sleeved, a clamping block (803) for clamping the steel pipe (10) is slidably connected to the clamping guide plate (801), a second tension spring (804) is connected between the two clamping blocks (803), an outward expansion rod (805) is fixedly connected to the rotating frame (8), and the outward expansion rod (805) is used to squeeze the two clamping blocks (803) to clamp the steel pipe (10), a rotating motor (806) for driving the rotating frame (8) to rotate is fixedly connected to the left lifting frame (102), and a turntable (807) is rotatably connected to the workbench (111).

10. A welding device for gas pipeline construction according to claim 7, characterized in that: The invention also comprises a bidirectional lead screw (9) for driving the push plate (401) and the positioning slide plate (6), a drive plate (901) and an active motor (902); the bidirectional lead screw (9) is rotatably connected to the workbench (111); the bidirectional lead screw (9) and the positioning slide plate (6) are threadedly connected; the bidirectional lead screw (9) is also threadedly connected to the drive plate (901); the drive plate (901) and the push plate (401) are fixedly connected; the bidirectional lead screw (9) is used to drive the push plate (401) and the positioning slide plate (6) to move towards each other; and the active motor (902) for driving the bidirectional lead screw (9) is fixedly connected to the workbench (111).

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