WO2017015778A1 - 管道用气体保护焊式内焊机 - Google Patents

管道用气体保护焊式内焊机 Download PDF

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Publication number
WO2017015778A1
WO2017015778A1 PCT/CN2015/000542 CN2015000542W WO2017015778A1 WO 2017015778 A1 WO2017015778 A1 WO 2017015778A1 CN 2015000542 W CN2015000542 W CN 2015000542W WO 2017015778 A1 WO2017015778 A1 WO 2017015778A1
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WO
WIPO (PCT)
Prior art keywords
positioning
welding
cylinder
sleeve
head
Prior art date
Application number
PCT/CN2015/000542
Other languages
English (en)
French (fr)
Inventor
王光临
李建春
朱品
朱晓光
Original Assignee
洛阳德平科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 洛阳德平科技股份有限公司 filed Critical 洛阳德平科技股份有限公司
Priority to CN201580003001.4A priority Critical patent/CN105873718B/zh
Priority to PCT/CN2015/000542 priority patent/WO2017015778A1/zh
Priority to RU2017127747A priority patent/RU2687782C1/ru
Publication of WO2017015778A1 publication Critical patent/WO2017015778A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/027—Carriages for supporting the welding or cutting element for making circular cuts or welds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02—Carriages for supporting the welding or cutting element
    • B23K37/0276—Carriages for supporting the welding or cutting element for working on or in tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
    • B23K9/1735—Arc welding or cutting making use of shielding gas and of a consumable electrode making use of several electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/24—Features related to electrodes
    • B23K9/28—Supporting devices for electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

Definitions

  • the invention relates to the field of internal welding machines, in particular to a gas shielded welding type internal welding machine for pipelines.
  • the internal welding machine is mainly used in the pipeline construction of petrochemical, electric power, coal, water transportation, etc.
  • the main function is to complete the pairing and internal root welding of the two pipelines.
  • the existing inner welding machine is as shown in FIG. 1 , mainly consisting of a front frame 1 , a counterpart 13 , a rotating disk 3 , a welding unit 4 , a tensioning mechanism 5 , a middle frame 6 , a floating spring mechanism 7 , a driving mechanism 8 ,
  • the rear frame 9, the brake mechanism 10 and the air cylinder 12 are composed.
  • the cable and air pipe are easily damaged. Since the welding unit is distributed in the middle of the two rows of the rising block of the tensioning mechanism, the protective gas pipe and the cable connecting the welding unit are distributed on the outer side of the tensioning mechanism, and during the working process, the welding unit rotates around the axis of the device, therefore, the cable The wire and the air pipe are easily rubbed against the tensioning mechanism, causing damage to the cable and the air pipe, and it is not only necessary to replace the cable at any time and the replacement of the cable is expensive.
  • the welding unit includes a welding gun head, a wire feeding mechanism, a welding head supporting mechanism, a welding head adjusting mechanism, etc., and the mechanism is relatively complicated, resulting in a large outer dimension of the welding unit. Due to the limited space between the two rows of risers of the tensioning mechanism, when the welding unit fails, it is more difficult to overhaul, increase the maintenance time, and affect the construction efficiency.
  • the above-mentioned rotary disk is an important part of the fully automatic internal welder component, and is an indispensable part of the fully automatic internal welder. Without it, the internal welder cannot complete the welding operation. It is between the two rows of upswings.
  • the welding unit is uniformly fixed on the outer circumference of the rotary disk; the pinion gear connected to the rotary motor meshes with the ring gear of the inner ring of the rotary disk, so that the rotary disk in the rotary disk mechanism can rotate around the axis of the device.
  • the rotating motor is fixed on the middle frame and connected to the pinion through the coupling. Due to the roughness of the positioning reference, the rotating motor and the pinion have no good coaxiality, which is easy to cause the coupling. Damage to the device affects construction efficiency.
  • the above-mentioned rotating disk does not have good axial positioning.
  • the welding unit is fixed on the outer circumference of the rotating disc, and the welding head in the welding unit has strict relative position requirements with respect to the nozzles of the two pipes to be welded, and the relative position of the rotating disc to the nozzle to be welded should be maintained when rotating. Consistent.
  • the rotating disk in the rotating mechanism of the conventional internal welding machine does not have good axial positioning, thereby affecting welding quality and construction efficiency.
  • the object of the present invention is to overcome the defects of the existing inner welding machine and provide a new one.
  • the technical problem of the gas shielded welding type internal welding machine for the pipeline of the type structure is that the cable wire is not easy to be worn, the service life of the cable wire is improved, the cost is saved, and the utility model is more suitable for practical use.
  • Another object of the present invention is to provide a gas shielded welding type internal welding machine for pipelines, which has the technical problem of reducing the space between the two rows of rising blocks of the tensioning mechanism, reducing the difficulty of maintenance and reducing the maintenance time. Improve construction efficiency and make it more suitable for practical use.
  • a further object of the present invention is to provide a gas shielded welding type internal welding machine for pipelines, which has the technical problem of high positioning accuracy, ensuring the coaxiality of the rotating electrical machine and the pinion gear, and is not easy to damage parts and improve The construction efficiency and the service life are increased, thereby saving costs and being more suitable for practical use.
  • a further object of the present invention is to provide a gas shielded welding type internal welding machine for pipelines, which has the technical problem that the axial position of the rotating disc is more accurate, the welding quality and the construction efficiency are improved, and thus it is more suitable. Practical and industrially valuable.
  • Another object of the present invention is to provide a gas shielded welding type internal welding machine for pipelines.
  • the technical problem to be solved is that the two welded joints are accurately aligned during welding, and the welding quality is improved.
  • a gas shielded welding type internal welding machine for pipelines comprises: a front frame, a counterpart, a rotating disk mechanism, a welding unit, a tensioning mechanism, a middle frame, a floating spring mechanism, a driving mechanism, and a rear machine Rack, brake mechanism, walking mechanism, gas tank.
  • the control system and the counterpart are installed in the front frame.
  • a floating spring mechanism is mounted between the middle frame and the rear frame.
  • a drive mechanism, a brake mechanism, and a traveling mechanism are sequentially mounted on the rear frame.
  • the tensioning mechanism is mounted on the front frame on one side, and the other side of the tensioning mechanism is mounted on the middle frame.
  • the welding unit is composed of a wire feeder, a plurality of composite cable lines, a plurality of welding gun boxes, a plurality of welding gun heads, a plurality of welding head adjustment mechanisms, and a plurality of welding head lifting cylinders.
  • the wire feeder is removed from the welding unit and disposed in the front frame.
  • the plurality of torch boxes are disposed on the rotating disk mechanism.
  • Each of the welding gun cartridges includes a welding gun head, a welding head adjustment mechanism, and a welding head lifting cylinder.
  • the wire feeder is connected to the welding gun head through a composite cable, and the welding head is connected to one end of the welding head adjustment mechanism.
  • the front frame is provided with three sets of mouthpieces.
  • Each of the pair of mouthpieces is composed of a cylinder bearing, a counter cylinder, a connecting rod, a positioning block, a rear pressing head, a positioning reference surface, and a front pressing head, wherein one end of the cylinder bearing is mounted on the front bracket, the cylinder branch The other end of the seat is coupled to one end of the counterpart cylinder.
  • the other end of the pair of cylinders is connected to the positioning block.
  • the connecting rod is connected to the positioning block.
  • a front pressing head is disposed on the front upper end surface of the positioning block
  • a rear pressing head is disposed on the rear lower end surface of the positioning block.
  • the outer surface of the rear pressing head and the surface of the positioning reference surface are In contact with each other, the three rear indenters are on the same plane, and at this time, the three front indenters coincide with the plane in which all the welding gun heads are located, so as to ensure that the welding torch head can be welded with the tube to be welded while being rotated by the rotating disc mechanism.
  • the mouth coincides.
  • the foregoing gas shielded welding type internal welder for pipelines wherein the tensioning mechanism is composed of two identical symmetrical structures.
  • One of the tensioning mechanisms consists of a hollow sleeve, a first lock nut, a cylinder bottom, a cylinder, a piston, a piston rod, a second lock nut, a first cylinder head, a second cylinder head, a hinged seat, a connecting rod, and a distribution.
  • Disc, ram, riser, guide sleeve multiple The air intake is composed. Wherein the cylinder bottom is in contact with the cylinder barrel, the cylinder cylinder is in contact with the first cylinder head, and the first cylinder head is in contact with the second cylinder head to form a tensioning unit.
  • the internal cavity of the mechanism The guiding sleeve is disposed in a middle portion of the inner cavity of the inner cavity, and has a hollow structure.
  • One end of the guiding sleeve is fixed to one end of the hollow sleeve located in the transverse direction, and the other end of the hollow sleeve passes the first locking.
  • the nut is fixed to the bottom of the cylinder such that the inner cavity of the hollow sleeve communicates with the inner cavity of the guide sleeve, and the outer circumference of the hollow sleeve and the outer side of the guide sleeve provide axial sliding and support for the piston rod.
  • One end of the piston rod disposed on the outer side of the hollow sleeve and the guiding sleeve is connected with one end of the connecting rod through a hinge seat, and the other end of the connecting rod is connected with the bottom end of the jack, and the upper end of the jack is provided with a rising block
  • the other end of the piston rod is connected to the piston through a second lock nut.
  • the piston rod is movable in the axial direction with the piston.
  • the distribution tray is disposed between the second cylinder head and the guide sleeve.
  • the jack can move up and down along a radial hole in the distribution plate, and a plurality of air inlets are disposed on the cylinder.
  • the gas shielded inner welder for pipelines described above wherein the guide sleeve is composed of a sleeve, two connecting plates and a plurality of connecting ribs.
  • the two connecting discs are disc structures and are respectively located on two sides of the vertical axis symmetry.
  • the sleeves in the horizontal axial direction are connected with the two connecting discs to form an integral structure, and a plurality of connections are arranged between the two connecting discs. Ribs.
  • the foregoing gas shielded welding type internal welding machine for pipelines wherein the rotating disk mechanism is composed of a rotating disk rotary driving system, a rotating disk and a plurality of rotating disk positioning mechanisms.
  • the rotating disc is disposed between the two side distribution discs, coaxially disposed with the distribution disc, and radially outward of the connecting disc.
  • a plurality of rotating disk positioning mechanisms are fixed to the distribution plate, and the set of rotating disk rotary drive systems are coupled to the distribution plate.
  • the rotary disk drive system comprises a rotary electric machine, a fixed block, a fixing screw, a bearing, a pressure plate, a pinion gear, a key, and a transmission shaft, wherein the fixed block is fixed On the distribution plate of the tensioning mechanism described above, it has a high-precision positioning reference.
  • the rotating electric machine is connected to one end of the transmission shaft through the key, and the transmission shaft is supported by the bearing in a circular hole on the distribution plate, and the other end of the transmission shaft and the pinion
  • the bolt and the pressure plate are connected to ensure the coaxiality of the whole rotary drive system, and the precision of the rotation of the rotary disk is ensured.
  • the turntable body is a split structure, and is composed of at least two curved bodies. The at least two curved bodies are fixedly connected by a connecting plate and a positioning connecting bolt to form an integrated turntable body.
  • the inner circle of the turntable body is provided with an inner ring gear that meshes with the pinion of the rotary disk drive system, and the plurality of torch boxes are fixed on the turntable body of the rotary disk mechanism.
  • a threading hole is respectively disposed at a position of the plurality of welding gun boxes fixed on the rotating body, so that the threading hole on the rotating body, the inner cavity of the guiding sleeve and the inner cavity of the hollow sleeve form a composite cable from the wire feeding machine to the welding head aisle.
  • the gas shielded welding type internal welding machine for pipelines wherein the positioning mechanism of the rotating disc comprises a plurality of first pin shafts, a plurality of first brackets, a plurality of first positioning wheels, a plurality of positioning bearings, and a plurality of second a positioning wheel, a plurality of second brackets, a plurality of guiding blocks, a plurality of springs, and a plurality of adjusting sleeves, wherein the positioning bearing is fixed to the distribution disc of the tensioning mechanism by a first pin shaft, A plurality of locating bearings are evenly distributed on the same circumference as the distribution plate, and the outer circumferences of the plurality of locating bearings are in contact with the inner circle of the rotating disk to achieve radial positioning.
  • a plurality of first brackets are fixed on the distribution disc of the tensioning mechanism, each of the first positioning wheels is fixed on the corresponding first bracket, and the outer circle of each of the positioning wheels is in contact with the side of the rotating disc , to achieve axial positioning.
  • the plurality of guiding blocks are fixed on the distribution disc of the tensioning mechanism, and each of the second brackets is connected with each guiding block, and the second bracket passes through the guiding block Now moving axially.
  • Each of the second positioning wheels is fixed on each of the corresponding second brackets.
  • the guiding block is provided with a spring, and an adjusting sleeve is disposed at an outer end of the guiding block, and the second positioning can be performed by the spring and the adjusting sleeve
  • the outer circumference of the wheel is axially compressed on the side of the rotating disc, and the pressing force of the spring can be changed by adjusting the relative position of the adjusting sleeve and the guiding block.
  • a sealing seal ring and a guide ring for the cavity are arranged between the hollow sleeve and the piston rod.
  • the gas shielded inner welder for pipelines wherein a sensor device is added between each of the rear indenters and the positioning reference surface and between the front indenter and the nozzle to be welded, and the counter operation is performed.
  • a sensor device is added between each of the rear indenters and the positioning reference surface and between the front indenter and the nozzle to be welded, and the counter operation is performed.
  • the present invention has significant advantages and advantageous effects over the prior art. It has at least the following advantages:
  • the invention removes the wire feeding mechanism in the welding unit to the front frame, simplifies the welding unit, reduces the outer shape of the welding gun box, minimizes the failure rate, and can quickly and conveniently perform maintenance after the failure, thereby saving the maintenance cost. .
  • a guiding sleeve is arranged in the inner cavity of the tensioning mechanism.
  • the rotating body of the rotating disk of the present invention is a split type rotating wheel, and the rotating body is A threading hole is provided to ensure that a plurality of composite cables are smoothly passed through and connected to the torch head of the torch box.
  • the inner cavity of the guiding sleeve, the inner cavity of the hollow sleeve which is in contact therewith and the threading hole on the turntable body form a passage of the composite cable from the wire feeder 41 to the welding head 44, eliminating the welding cable and the protective gas pipe and the like.
  • the friction generated by the mechanism improves the service life of the composite cable, and the disassembly and installation of the composite cable is quick and convenient, and the construction efficiency is improved. .
  • the invention reduces the outer dimensions of the welding gun box, reduces the distance between the two rows of rising blocks, improves the function of the rounding nozzle of the inner welding machine, realizes better pairing of the nozzles, and improves the welding quality. .
  • the invention adopts a rotating disc positioning system to increase the axial positioning of the disc mechanism and improve the welding quality.
  • the invention improves the connection mode of the rotary drive motor. It ensures the coaxiality of the whole rotary drive system, ensures the precision of the rotation of the rotary disk, and improves the welding quality.
  • the use of the mouthpiece of the invention makes the two welded joints of the welded joints more accurate during welding, thereby ensuring the welding quality.
  • Figure 1 is a schematic view showing the appearance of a combined structure of an existing internal welding machine.
  • Figure 2 is a schematic view showing the appearance of the combined structure of the present invention.
  • FIG. 3 is a schematic view showing the structure of the welding unit of the present invention.
  • Figure 4 is a schematic view showing the structure of the welding unit of the present invention.
  • Figure 5 is a schematic view showing the structure of the tensioning mechanism of the present invention.
  • Figure 6A is a schematic cross-sectional view showing the structure of the hollow sleeve of the present invention.
  • Figure 6B is a side elevational view of the hollow sleeve of the present invention.
  • Figure 7 is a schematic view showing the structure of a rotary disk mechanism of the present invention.
  • Figure 8 is a schematic view showing the structure of a rotary disk rotary drive system of the present invention.
  • Fig. 9A is a schematic structural view of a rotary disk of the present invention.
  • Fig. 9B is a cross-sectional view taken along line A-A of Fig. 9A.
  • Figure 9c is a partially enlarged schematic view of Figure 9A.
  • Figure 10 is a schematic view showing the structure of the rotary disk positioning mechanism of the present invention.
  • Figure 11 is a schematic view showing the structure of the counterpart of the present invention.
  • Front frame positioning mechanism 2 Control system
  • Inner ring gear 362 Turntable body
  • welding gun head adjustment mechanism 46 welding gun head lifting cylinder
  • first cylinder head 58 second cylinder head
  • hinged seat 510 connecting rod
  • Distribution plate 513 ejector
  • Cylinder bearing 132 Counter cylinder
  • Connecting rod 134 positioning block
  • a gas shielded welding type internal welding machine for pipelines mainly comprises: a front frame 1, a mouthpiece 13, a rotating disk mechanism 3, a welding unit 4, and a tensioning mechanism 5.
  • the control system 2 and the counterpart 13 are mounted in the front frame 1 , and a floating spring mechanism 7 is installed between the middle frame 6 and the rear frame 9 .
  • a drive mechanism 8, a brake mechanism 10, and a traveling mechanism 11 are sequentially mounted on the rear frame 9.
  • the tensioning mechanism 5 is mounted on the front frame 1 on one side, and the other side of the tensioning mechanism 5 is mounted on the middle frame 6.
  • One side of the floating spring mechanism 7 is connected to the middle frame 6.
  • the other side of the floating spring mechanism 7 is connected to the rear frame 9.
  • the gas tank 12 is connected to the rear frame 9, and the welding unit 4 and the rotating disk mechanism 3 are disposed in the tensioning mechanism 5.
  • the welding unit 4 is composed of a wire feeder 41 , a plurality of sets of composite cable wires 42 , a plurality of welding gun boxes 43 , a plurality of welding torch heads 44 , a plurality of welding torch head adjusting mechanisms 45 , A plurality of welding gun head lifting cylinders 46 are formed, and the wire feeder 41 is removed from the welding unit 4 and disposed in the front frame 1.
  • the plurality of welding gun boxes 43 are disposed on the rotating disc mechanism 3.
  • six composite cable lines 42, six welding gun boxes 43, six welding gun heads 44, and six welding head adjusting mechanisms 45 and six are provided.
  • the torch head lifts the cylinder 46.
  • Each of the welding gun cartridges 43 includes a welding torch head 44, a welding torch head adjusting mechanism 45, and a welding torch head lifting cylinder 46.
  • the wire feeder 41 is connected to the welding torch head 44 through a composite cable wire 42.
  • the head 44 is connected to one end of the torch head adjusting mechanism 45, and the other end of the torch head adjusting mechanism 45 is connected to the torch case 43. Since the wire feeder 41 is removed from the welding unit 4, the friction between the composite cable wire 42 and the rising block 514 of the tensioning mechanism 5 and the jack 513 is eliminated, The service life of the composite cable 42 is simplified.
  • the structure of the welding unit is simplified, and the probability of failure is reduced, so that the outer dimensions of the welding unit 4 are reduced, and the distance between the two rows of the rising blocks is reduced, so that the first waiting is better.
  • the nozzles of the welded pipe 14 and the second pipe to be welded 15 are rounded and paired.
  • the front frame 1 is provided with three sets of mouthpieces 13, each of which is composed of a cylinder holder 131, a counter cylinder 132, a connecting rod 133, a positioning block 134, and a rear indenter. 135.
  • the positioning reference surface 136 and the front indenter 137 are composed.
  • the cylinder support 131 is mounted on the front bracket 1 at one end, and the other end of the cylinder support 131 is connected to one end of the counterpart cylinder 132.
  • the other end of the counterpart cylinder 132 is connected to the positioning block 134.
  • the connecting rod 133 is connected to the positioning block 134.
  • the front upper end surface of the positioning block 134 is provided with a front pressing head 137, and the rear lower end surface of the positioning block 134 is provided with a rear pressing head 135.
  • the positioning reference surface 136 is in contact with the outer surface of the first indenter 135.
  • the three counterpart cylinders 132 respectively support the three rear indenters 135 to contact the positioning reference surface 136, the three rear indenters are in the same plane, and at this time, the three front indenters 137 and all the welding gun heads 44 are located.
  • the planes coincide to ensure that the torch head 44 can coincide with the tube port 16 to be welded when it is rotationally welded with the rotating disk 36.
  • the front frame 1 of the inner welder and the front half of the tensioning mechanism 5 are first exposed to the second pipe to be welded 15, and the mouthpiece cylinder 132 is supported, so that the surfaces of the three rear indenters 135 are respectively 3
  • the positioning reference surface 136 is coincident; the driving mechanism 8 is activated to move the inner welding machine backward in the pipe to be welded until the three front pressing heads 137 are in contact with the pipe opening 16 to be welded, and the surface and positioning reference of the three rear pressing heads 135 at this time
  • the faces 136 are coincident, and the three front indenters 137 are in contact with the pipe port 16 to be welded, and the upsump 514 of the tensioning mechanism 5 in the second welded pipe 15 is quickly propped up to support the inner wall of the pipe, and the driving mechanism 8 and the counter are released.
  • the cylinder 132 is completed and the counterpart is completed.
  • the surface of the three rear indenters 135 and the positioning reference plane or the three front indenters 137 and one or several of the nozzles to be welded 16 are not in contact during the process of the counterpart, and the completion is completed.
  • the counter operation which will directly affect the welding quality.
  • a sensor device is added between the rear indenter 135 and the positioning reference surface 136 and between the three front indenters 137 and the pipe to be welded 16, and the surface of the three rear indenters 135 is used in the counter operation.
  • the positioning reference surface 136 and the three front pressing heads 137 are in contact with the nozzle opening 16 to be welded, respectively, there are six display devices indicating whether they are in contact. Once there is a point that is not in contact, the display device will alarm the operator which point is not in contact. And check, so as to effectively ensure the quality of the counterpart, thus ensuring the quality of the weld.
  • the tensioning mechanism 5 is composed of two identical symmetrical structures, wherein one of the tensioning mechanisms 5 is composed of a hollow sleeve 51, a first lock nut 52, a cylinder bottom 53, a cylinder, and a piston. 54.
  • the cylinder bottom 53 is in contact with the cylinder barrel, and the cylinder cylinder is in contact with the first cylinder head 57.
  • the first cylinder head 57 is connected to the second cylinder head 58.
  • the inner cavity of the tensioning mechanism 5 is formed.
  • the guide sleeve 515 is disposed in the middle of the inner cavity of the inner cavity and has a hollow structure.
  • One end of the guide sleeve 515 is fixed to one end of the hollow sleeve 51 located in the transverse direction, and the other end of the hollow sleeve 51 is fixed to the cylinder bottom 53 by the first lock nut 52, so that the inside of the hollow sleeve 51
  • the cavity communicates with the inner cavity of the guide sleeve 515.
  • the outer circumference of the hollow sleeve 51 and the outer side of the guide sleeve 515 provide axial sliding and support for the piston rod 55; one end of the piston rod 55 disposed on the outer side of the hollow sleeve 51 and the guide sleeve 515 and the connecting rod 510 One end of the connecting rod 510 is connected to the bottom end of the jack 513.
  • the upper end of the jack 513 is provided with a rising block 514, and the other end of the piston rod 55 passes through the piston 54.
  • the second lock nut 56 is connected, the piston rod 55
  • the shifting disk 512 is disposed between the second cylinder head 58 and the guide sleeve 515.
  • the jack 513 can move up and down along the radial hole on the distribution plate 512, and multiple intake air.
  • the port is disposed on the cylinder, and the first inlet 516 and the second inlet 517 are provided in this embodiment.
  • the hollow sleeve 51 and the piston rod 55 are disposed between the hollow sleeve 51 and the piston rod to seal the seal ring and the guide ring.
  • the pressure pushes the piston 54 to move along the hollow sleeve 51, and the piston 54 is connected to the piston rod 55 to drive the piston rod.
  • the 55 moves in the axial direction to drive the tensioning mechanism 5.
  • the piston 54 stops moving and the tensioning mechanism 5 moves to the highest point.
  • the pressure pushes the piston 54 to slide along the hollow sleeve 51, thereby driving the tensioning mechanism 5 to recover, until the piston 54 faces the cylinder bottom 53 and the piston 54 stops moving, and the tensioning mechanism 5 moves.
  • the present invention can increase the service life of the air pipe and composite cable 42.
  • the guide sleeve 515 is a hollow structure composed of a sleeve 515a, two connecting discs 515b and a plurality of connecting ribs 515c.
  • the two connecting discs 515b are discs.
  • the structure is respectively located on both sides of the vertical axis symmetry, and the sleeve 515a located in the lateral direction is connected with the two connecting plates 515b to form a unitary structure, and a plurality of connecting ribs 515c are disposed between the two connecting plates 515b.
  • the hollow structure of the inner welder guide sleeve 515 can ensure that two or more composite cable wires 42 can pass normally, and the friction between the composite cable 42 and other components is reduced as much as possible, and the service life of the composite cable wire 42 is increased. Since two or more connecting ribs 515c are connected in the middle of the guiding sleeve 515, more than two sets of the air pipe and the composite cable 42 can be normally passed through, so that the plurality of sets of the air pipe and the composite cable 42 are smoothly connected to the welding head 44. .
  • the rotary disk mechanism 3 is composed of a set of rotary disk rotary drive system 32, a rotary disk 36 and a plurality of rotary disk positioning mechanisms 37, and the rotary disk 36 is disposed in the Between the two sides of the distribution plate 512, disposed coaxially with the distribution plate 512, and on the outer side of the radial direction of the connection plate 515b, a plurality of rotary disk rotation positioning mechanisms 37 are fixed on the distribution plate 512, A set of rotary disk rotary drive system 32 is coupled to the distribution plate 512. In this embodiment, 9 sets of selection dial positioning mechanisms are provided.
  • the rotary disk drive system 32 is composed of a rotary motor 321 , a fixed block 322 , a fixing screw 323 , a bearing 324 , a pressure plate 325 , a pinion 326 , a key 327 , and a transmission shaft 328 .
  • the fixing block 322 is fixed to the distribution plate 512 of the tensioning mechanism 5 by a fixing screw 323 to have a high-precision positioning reference, and the rotating electric machine 321 passes through the key 327 and one end of the transmission shaft 328.
  • the drive shaft 328 is supported by the bearing 324 in a circular hole in the distribution plate 512.
  • the other end of the drive shaft 328 is coupled with the pinion 326 by bolts and a pressure plate 325, thereby ensuring a complete rotary drive system.
  • the coaxiality of 32 ensures the accuracy of rotation of the rotating disk 36.
  • the fixing block 322 is fixed on the distribution plate 512 of the tensioning mechanism 5, the bearing 324 is fixed in the hole of the distribution plate 512, and the fixing surface of the fixing block 322 has a good perpendicularity with the fixing hole of the bearing 324, thereby The coaxiality of the rotary electric machine 321 fixed to the fixed block 322 and the distribution plate 512 is ensured.
  • the rotary motor 321 drives the transmission shaft 328 to rotate by the key 327.
  • the transmission shaft 328 drives the pinion 326 to rotate, and the pinion 326 meshes with the inner ring gear 361 of the rotary disk 36 to drive the rotary disk 36 to rotate.
  • the rotary motor 321 to the pinion 326 are hardly connected, so that the encoder of the rotary motor 321 can more accurately reflect the rotation angle of the rotary disk 36 and improve the quality of the weld.
  • the rotating disk 36 is a split type turntable, and includes an inner ring gear 361, a turntable body 362, a positioning connecting bolt 363, a connecting plate 364, and a threading hole 365.
  • the body 362 is divided into points
  • the body structure is composed of at least two curved bodies, and the at least two curved bodies are fixedly connected by a connecting plate 364 and a positioning connecting bolt 363 to form an integrated turntable body 362.
  • the inner circle of the turntable body 362 is provided with An inner ring gear 361 meshes with the pinion gear 326 of the rotary disk drive system 32, and is fixed to the turntable body 362 of the rotary disk mechanism 3 with the plurality of torch boxes 43 on the turntable body
  • a plurality of welding gun boxes 43 fixed on the 362 are respectively provided with threading holes 365, so that the threading holes 362 on the rotating body 362, the inner cavity of the guiding sleeve 515, and the inner cavity of the hollow sleeve 51 form a composite cable 42 and a trachea are sent.
  • the main function of the rotary disk 36 is to fix and drive the torch case 43 to rotate.
  • the rotating disc 36 is designed as a split type, which is mainly convenient for installation, maintenance and overhaul. It is not necessary to disassemble the parts in the tightening mechanism 5, and the positioning connecting bolt 363 is directly loosened, and the connecting plate 364 can be removed, which is very convenient and high in efficiency. .
  • the positioning mechanism 37 of the rotating disk comprises a plurality of first pin shafts 371, a plurality of first brackets 372, a plurality of first positioning wheels 373, a plurality of positioning bearings 374, and a plurality of second positioning positions.
  • the wheel 375, the plurality of second brackets 376, the plurality of guiding blocks 377, the plurality of springs 378, and the plurality of adjusting sleeves 379 are formed.
  • the plurality of positioning bearings 374 are fixed to the distribution plate 512 of the tensioning mechanism 5 by the first pin shaft 371, and the plurality of positioning bearings 374 are evenly distributed on the same circumference as the distribution plate 512.
  • the outer circumference of the bearing 374 is in contact with the inner circle of the rotating disk 3 to achieve radial positioning.
  • the plurality of first brackets 372 are fixed to the distribution plate 512 of the tensioning mechanism 5, and each of the first positioning wheels 375 is fixed on the corresponding first bracket 372.
  • the outer circle of each of the positioning wheels 375 is in contact with the side surface of the rotating disk 36 to achieve axial positioning.
  • the plurality of guide blocks 377 are fixed to the distribution plate 512 of the tensioning mechanism 5.
  • Each of the second brackets 376 is coupled to each of the guide blocks 377.
  • the second bracket 376 is axially moved by a guiding block 377, and each of the second positioning wheels 375 is fixed on each of the corresponding second brackets 376.
  • the guiding block 377 is provided with a spring 378 at the guiding block 377.
  • the outer end is provided with an adjusting sleeve 379.
  • the spring 378 and the adjusting sleeve 379 can press the outer circumference of the second positioning wheel 375 on the side of the rotating disc 36 to achieve axial compression.
  • the pressing force of the spring 378 can be changed by adjusting the relative position of the adjusting sleeve 379 and the guiding block 377.
  • nine first pin shafts 371, nine first brackets 372, 9 first positioning wheels 373, nine positioning bearings 374, nine second positioning wheels 375, nine second brackets 376, and nine guides are provided.
  • the main function of the positioning mechanism 37 of the rotary disk is to ensure the relative positional relationship between the rotary disk 3 and the distribution plate 512, that is, to ensure the axial and radial positioning of the rotary disk 36.
  • the outer circumference of the plurality of positioning bearings 374 is in contact with the inner circle of the rotating disk 36, and the plurality of positioning bearings 374 are evenly distributed on the same circumference of the distribution plate 512 by the first pin shaft 371, thereby ensuring the rotating disk 3 is coaxial with the distribution plate 512, achieving radial positioning of the rotating disk 36.
  • each of the positioning wheels 375 is in contact with the side surface of the rotating disk 36, and the distance between each of the positioning wheels 375 and the distribution plate 512 is uniform, thereby ensuring the parallelism between the rotating disk 36 and the distribution plate 512, and realizing the rotating disk.
  • the guiding block 377 is fixed on the distributing plate 512, and the second bracket 376 can realize axial sliding in the guiding block 377.
  • the adjusting sleeve 379 is connected with the guiding block 377 by threads, and is changed by adjusting the spacing between the adjusting sleeve 379 and the guiding block 377.
  • the preloading force of the spring 378 is installed between the adjusting sleeve 379 and the second bracket 376, so that the second bracket 376 drives the second positioning wheel 375 to press the side of the rotating disc 36 to achieve axial compression of the rotating disc 36.
  • the inner welder front frame 1, the middle frame 6, and the rear frame 9 are mainly used to fix other mechanisms and provide protection for other mechanisms, which constitute the main frame of the inner welder.
  • the control system is mainly used to achieve all manipulations of the internal welder by the operator.
  • the mouthpiece 13 is used to realize the counterpart function of the inner welder, and to ensure that the plurality of torch heads 44 are in the rotating disk 36 can rotate in the same plane as the pipe port 16 to be welded.
  • the welding unit 4 is mainly for welding the pipe opening 16 to be welded.
  • the two rows of risers 514 of the tensioning mechanism 5 are respectively disposed in the two first to-be-welded pipes 14 and the second welded pipe 15, and the coaxiality of the two pipes to be welded can be ensured when the tensioning mechanism 5 is tightened, and
  • the nozzle of the pipe to be welded can be rounded, so that the distance between the welding head 44 and the pipe to be welded 16 is not changed, and the welding quality is ensured.
  • the floating spring mechanism 7 is mainly used for elastically connecting the middle frame 6 and the rear frame 9 to ensure that the degree of freedom of the tensioning mechanism 5 is released as much as possible during the counterparting of the mouthpiece 13 to ensure the quality of the counterpart, and the floating spring
  • the moving mechanism 7 can ensure the passability of the automatic welding when walking in a pipe with a certain degree of curvature.
  • the drive mechanism 8 is mainly used to provide forward or reverse power to the automatic welding.
  • the brake mechanism 10 is an important measure for ensuring safe construction during construction.
  • the internal welder of the structure adopts the interlocking design of the drive mechanism 8 and the brake mechanism 10, that is, the brake is synchronously released when the drive mechanism 8 drives the inner welder to advance or retreat, and the inner weld is performed.
  • the running mechanism 11 is mainly used to support the inner welder in the pipeline to realize the walking of the inner welder.
  • the main function of the gas tank 12 is to provide a gas source for the inner welder within a certain period of time to ensure that the various pneumatic components on the inner welder can work normally.

Abstract

一种管道用气体保护焊式内焊机，包括：前机架(1)、对口器(13)、旋转盘机构(3)、焊接单元(4)、涨紧机构(5)、中机架(6)、浮动弹簧机构(7)、驱动机构(8)、后机架(9)、刹车机构(10)、气罐(12)。其中将所述的送丝机(41)从焊接单元(4)移出并设置在前机架(1)内，所述的旋转盘机构(3)的转盘本体(362)上的穿线孔(365)、导向套(515)的内腔、空心套筒(51)内腔形成复合电缆线(42)由送丝机(41)至焊枪头(44)的通道。该内焊机的复合电缆线不易磨损，提高了复合电缆线的使用寿命，节约了成本。该内焊机采用了旋转盘的定位机构，增加了旋转盘机构的轴向定位，改进了旋转盘驱动电机的连接方式，保证了整套旋转驱动系统的同轴度和旋转盘转动的精度，改善了对口效果并且提高了焊接质量。

Description

管道用气体保护焊式内焊机 技术领域
本发明涉及一种内焊机领域，特别是涉及一种管道用气体保护焊式内焊机。
背景技术
内焊机主要应用于石化、电力、煤炭、输水等管道施工中，主要功能是完成两根管道的组对及内部根焊。
现有的内焊接机如图1所示，主要由前机架1、对口器13、旋转盘3、焊接单元4、涨紧机构5、中机架6、浮动弹簧机构7、驱动机构8、后机架9、刹车机构10和气罐12组成。上述的现有的内焊接机虽可提供使用者一具有良好焊机功效，确实具有进步性，但是在实际使用时却发现其结构中还存在有若干缺点，造成该现有的内焊接机在实际应用上，未能达到最佳的使用效果，其缺点如下：
1、首先，电缆线和气管易损伤。由于焊接单元分布在涨紧机构的两排涨块中间位置，连接焊接单元的保护气管及电缆线都是分布在涨紧机构外侧面，工作过程中，焊接单元会围绕设备轴线旋转，因此，电缆线及气管很容易和涨紧机构发生摩擦，造成电缆及气管的损伤，不仅要随时更换电缆线且更换电缆线的价格昂贵。
2、另外，不方便检修。焊接单元内包含了焊枪头、送丝机构、焊枪头撑起机构、焊枪头调整机构等，机构比较复杂，造成了焊接单元的外形尺寸较大。由于涨紧机构的两排涨块之间的空间有限，当焊接单元出现故障时，为检修增加难度，增加检修时间，影响施工效率。
3、再者，定位基准度不精确。上述的旋转盘是全自动内焊机部件的重要组成部分，更是全自动内焊机必不可少的部分，缺少它，内焊机就无法完成焊接作业。它处于涨紧机构两排涨块之间。焊接单元均匀的固定在旋转盘的外圆上；通过与旋转电机连接的小齿轮与旋转盘内圈的齿圈相啮合，使得旋转盘机构中的旋转盘能绕设备轴心旋转。传统内焊机中，旋转电机固定在中机架上，通过联轴器与小齿轮连接，由于定位基准的粗糙性造成了旋转电机与小齿轮没有很好的同轴度，很容易造成联轴器的损坏，影响施工效率。
4、值得注意的是，上述的旋转盘没有良好的轴向定位。焊接单元固定在旋转盘的外圆上，而焊接单元内的焊枪头相对两根待焊管道的管口有严格的相对位置要求，并且旋转盘在旋转时其与待焊管口的相对位置应保持一致。但传统内焊机的旋转机构中的旋转盘没有良好的轴向定位，从而影响焊接质量和施工效率。
有鉴于上述现有的内焊接机存在的缺陷，本发明人积极加以改进，以期创设一种新型结构的管道用气体保护焊式内焊机，使其更具有实用性。
发明内容
本发明的目的在于，克服现有的内焊接机存在的缺陷，而提供一种新 型结构的管道用气体保护焊式内焊机，所要解决的技术问题是使其电缆线不易磨损，提高电缆线的使用寿命，节约成本，从而更加适于实用。
本发明的另一目的在于，提供一种管道用气体保护焊式内焊机，所要解决的技术问题是使其缩小涨紧机构的两排涨块之间的空间，降低检修难度，减少检修时间，提高施工效率，从而更加适于实用。
本发明的再一目的在于，提供一种管道用气体保护焊式内焊机，所要解决的技术问题是使其定位基准度高，保证旋转电机与小齿轮的同轴度，不易损坏零件，提高了施工效率，提高了使用寿命，从而节约了成本，更加适于实用。
本发明的还一目的在于，提供一种管道用气体保护焊式内焊机，所要解决的技术问题是使其旋转盘的轴向定位更加准确，提高了焊接质量和施工效率，从而更加适于实用，且具有产业上的利用价值。
本发明又一目的在于提供一种管道用气体保护焊式内焊机，所要解决的技术问题是使其焊接时两个带焊接管口对口准确，提高焊接质量。
本发明的目的及解决其技术问题是采用以下技术方案来实现的。依据本发明提出的一种管道用气体保护焊式内焊机，包括：前机架、对口器、旋转盘机构、焊接单元、涨紧机构，中机架、浮动弹簧机构、驱动机构、后机架、刹车机构、行走机构、气罐。其中所述的前机架内安装有控制系统及对口器。该中机架与所述的后机架中间安装有浮动弹簧机构。该后机架上顺序安装有驱动机构、刹车机构和行走机构。所述的涨紧机构一侧安装在前机架上，该涨紧机构的另一侧安装在中机架上。所述的浮动弹簧机构的一侧与该中机架相连接，该浮动弹簧机构的另一侧与该后机架相连接。所述的气罐与该后机架连接。所述的焊接单元和所述的旋转盘机构设置在该涨紧机构内。其中所述的焊接单元是由送丝机、多根复合电缆线、多个焊枪盒、多个焊枪头、多个焊枪头调整机构、多个焊枪头举升气缸组成。将所述的送丝机从焊接单元移出并设置在前机架内。所述的多个焊枪盒设置在旋转盘机构上。该每一个焊枪盒包括一个焊枪头、一个焊枪头调整机构、一个焊枪头举升气缸。该送丝机与该焊枪头通过复合电缆线相连接，所述的焊抢头与该焊枪头调整机构一端相连接。
前述的管道用气体保护焊式内焊机，其中所述的前机架上布设有3套对口器。每一个对口器由气缸支座、对口器气缸、连杆、定位块、后压头、定位基准面、前压头组成，其中，所述的气缸支座一端安装在前支架上，该气缸支座的另一端与所述的对口器气缸的一端连接。该对口器气缸的另一端与定位块连接。所述的连杆与该定位块连接。在该定位块的前上端面设有前压头，在该定位块的后下端面设有后压头，当对口器气缸撑起，将后压头外表面与所述的定位基准面的表面相接触，使3个后压头同在一个平面上，且此时3个前压头与所有的焊枪头所在的平面重合，以便保证焊枪头在随旋转盘机构旋转焊接时能与待焊接管口重合。
前述的管道用气体保护焊式内焊机，其中所述的涨紧机构为两个相同的对称结构组成。其中一个涨紧机构由空心套筒、第一锁紧螺母、缸底、缸筒、活塞、活塞杆、第二锁紧螺母、第一缸盖、第二缸盖、铰接座、连杆、分配盘、顶杆、涨块、导向套、多个 进气口组成。其中，所述的缸底与所述的缸筒相接，该缸筒与所述的第一缸盖相接，该第一缸盖与所述的第二缸盖相接，共同构成涨紧机构的内腔体。所述的导向套设置在该内腔体的内腔中部，为中空结构，该导向套的一端固定于位于横轴向的空心套筒的一端，该空心套筒的另一端通过第一锁紧螺母固定于该缸底，使得该空心套筒的内腔和该导向套的内腔相通，该空心套筒的外圆及该导向套外侧面为所述的活塞杆提供轴向滑动和支撑。设置在该空心套筒和该导向套外侧面的活塞杆的一端与连杆的一端通过铰接座连接，该连杆的另一端与顶杆的底端连接，该顶杆的上端设置有涨块，该活塞杆的另一端与所述的活塞通过第二锁紧螺母相连接。该活塞杆能随该活塞沿轴向运动。所述的分配盘设置在第二缸盖与导向套之间。该顶杆能沿该分配盘上的径向孔上下移动，多个进气口设置在缸筒上。
前述的管道用气体保护焊式内焊机，其中所述导向套是由套管、两个连接盘和多个连接筋板组成。所述的两个连接盘为圆盘结构且分别位于竖直轴对称的两侧，位于横轴向的套管与两个连接盘连接形成一体结构，在两个连接盘之间设置多个连接筋板。
前述的管道用气体保护焊式内焊机，其中所述的旋转盘机构是由一套旋转盘旋转驱动系统、旋转盘和多个旋转盘定位机构所组成。所述的旋转盘设置在所述的两侧分配盘之间，与所述的分配盘同轴设置，且在所述的连接盘径向的外侧。在该分配盘上固定有多个旋转盘定位机构，所述的一套旋转盘旋转驱动系统与该分配盘连接。
前述的管道用气体保护焊式内焊机，其中所述的旋转盘驱动系统由旋转电机、固定块、固定螺钉、轴承、压板、小齿轮、键、传动轴组成，其中所述的固定块固定在所述的涨紧机构的分配盘上，使其有高精度的定位基准。所述的旋转电机通过所述的键与所述的传动轴的一端相连，该传动轴通过所述的轴承支撑在所述的分配盘上的圆孔内，该传动轴的另一端与小齿轮通过螺栓和压板连接，使其保证了该整套旋转驱动系统的同轴度，保证了所述的旋转盘转动的精度。
前述的管道用气体保护焊式内焊机，其中所述的旋转盘为分体式转盘，包括内齿圈、转盘本体、定位连接螺栓、连接板、穿线孔。其中所述的转盘本体为分体式结构，至少为两个弧形体组成，所述的至少两个弧形体之间通过连接板和定位连接螺栓固定连接构成一体式转盘本体。该转盘本体的内圆设置有内齿圈，该内齿圈与所述的旋转盘驱动系统的小齿轮啮合，与所述的多个焊枪盒固定在旋转盘机构的转盘本体上。在该转盘本体上所固定多个焊枪盒位置上分别设有穿线孔，使转盘本体上的穿线孔、导向套的内腔、空心套筒内腔形成复合电缆线由送丝机至焊枪头的通道。
前述的管道用气体保护焊式内焊机，其中所述旋转盘的定位机构由多个第一销轴、多个第一支架、多个第一定位轮、多个定位轴承、多个第二定位轮、多个第二支架、多个导向块、多个弹簧、多个调节套组成，其中，所述的定位轴承通过第一销轴固定于所述的涨紧机构的分配盘上，该多个定位轴承均匀的分布在与该分配盘同一圆周上，该多个定位轴承的外圆与所述的旋转盘的内圆相接触，实现径向定位。多个第一支架固定于该涨紧机构的分配盘上，所述的每一个第一定位轮固定在相对应的第一支架上，所述的每一个定位轮外圆与该旋转盘侧面接触，实现轴向定位。所述的多个导向块固定于该涨紧机构的分配盘上，所述的每一个第二支架与每一个导向块连接，该第二支架通过导向块实 现轴向移动。每一个第二定位轮固定在相对应的每一第二支架上，该导向块上设置有弹簧，在该导向块的外端设有调节套，通过该弹簧及该调节套能将第二定位轮外圆压在该旋转盘侧面上实现轴向压紧，通过调整该调节套与该导向块的相对位置能改变该弹簧的压紧力。
前述的管道用气体保护焊式内焊机，其中所述的空心套筒和活塞杆之间设置有使腔体密闭密封圈及导向环。
前述管道用气体保护焊式内焊机，其中所述的每一个后压头与所述的定位基准面之间和所述的前压头与待焊管口之间增加传感器装置，在进行对口操作时，所述后压头的表面与该定位基准面和该前压头与待焊管口接触时分别对应有6个显示装置以表明其是否接触。
本发明与现有技术相比具有明显的优点和有益效果。其至少具有下列优点：
1、本发明将焊接单元内的送丝机构移出至前机架内，简化焊接单元，减小焊枪盒外形尺寸，尽量减少其故障率，出现故障后能快速便捷的进行检修，节约了检修成本。
2、本发明由于将焊接单元内的送丝机构移出至前机架内，在涨紧机构内腔内设置有导向套，另，本发明采用旋转盘的转盘本体为分体式转盘，转盘本体上设有穿线孔，能保证多个复合电缆线有序顺利通过并连接在焊枪盒的焊枪头上。至此，导向套的内腔、与其相接的空心套筒的内腔及其转盘本体上穿线孔形成复合电缆线由送丝机41至焊枪头44的通道，消除了焊接电缆及保护气管和其他机构产生的摩擦，提高了复合电缆线的使用寿命，同时拆卸安装复合电缆线快而方便，提高了施工效率。。
3、本发明由于减小了焊枪盒的外形尺寸，减小两排涨块之间的距离，提高内焊机的校圆管口的功能，实现更好的组对管口，提高了焊接质量。
4、本发明采用旋转盘定位系统，增加旋盘机构的轴向定位，提高了焊接质量。
5、本发明改进转盘驱动电机的连接方式。使其保证了整套旋转驱动系统的同轴度，保证旋转盘转动的精度，提高了焊接质量。
6、本发明的采用对口器，使焊接时两个带焊接管口对口更加准确，从而保证了焊接质量。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例，并配合附图，详细说明如下。
附图的简要说明
本发明：
图1是已有内焊接机的组合结构外观示意图。
图2是本发明的组合结构外观示意图。
图3是本发明焊接单元结构示意图。
图4是本发明焊接单元的结构示意图。
图5是本发明的涨紧机构的结构示意图。
图6A是本发明的空心套筒的结构剖视示意图。
图6B是本发明的空心套筒的侧视示意图。
图7是本发明的旋转盘机构结构示意图。
图8是本发明的旋转盘旋转驱动系统结构示意图。
图9A是本发明的旋转盘的结构示意图。
图9B是图9A的A-A剖视图。
图9c是图9A的局部放大结构示意图。
图10是本发明的旋转盘定位机构结构示意图。
图11：是本发明的对口器结构示意图。
其中：
1：前机架定位机构    2：控制系统
3：旋转盘机构
32：旋转盘旋转驱动系统
321：旋转电机        322：固定块
323：固定螺钉        324：轴承
325：压板            326：小齿轮
327：键              328：传动轴
36：旋转盘
361：内齿圈          362：转盘本体
363：定位连接螺栓    364：连接板
365：穿线孔
37：旋转盘定位机构
371：第一销轴        372：第一支架
373：第一定位轮      374：定位轴承
375：第二定位轮      376：第二支架
377：导向块          378：弹簧
379：调节套
4：焊接单元
41：送丝机           42：复合电缆线
43：焊枪盒           44：焊枪头
45：焊枪头调整机构   46：焊枪头举升气缸
5：涨紧机构
51：空心套筒、       52：第一锁紧螺母
53：缸底             54：活塞
55：活塞杆           56：第二锁紧螺母
57：第一缸盖         58：第二缸盖
59：铰接座           510：连杆
512：分配盘          513：顶杆
514：涨块
515：导向套
515a：套管         515b：连接盘
515c：连接筋板
516：第一进气口    517：第二进气口
6：中机架          7：浮动弹簧机构
8：驱动机构        9：后机架
10：刹车机构       12：气罐
13：对口器
131：气缸支座      132：对口器气缸
133：连杆          134：定位块
135：后压头        136：定位基准面
137：前压头
14：第一待焊管口   15：第二待焊管口
16：第二待焊管口
实现发明的最佳方式
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效，以下结合附图及较佳实施例，对依据本发明提出的管道用气体保护焊式内焊机，其具体实施方式、结构、特征及其功效，详细说明如后。
请参阅图2所示，本发明较佳实施例的管道用气体保护焊式内焊机，其主要包括：前机架1、对口器13、旋转盘机构3、焊接单元4、涨紧机构5，中机架6、浮动弹簧机构7、驱动机构8、后机架9、刹车机构10、气行走机构11、气罐12。其中，所述的前机架1内安装有控制系统2及与对口器13，所述的中机架6与所述的后机架9中间安装有浮动弹簧机构7。该后机架9上顺序安装有驱动机构8、刹车机构10和行走机构11。所述的涨紧机构5一侧安装在前机架1上，该涨紧机构5的另一侧安装在中机架6上，该浮动弹簧机构7的一侧与中机架6相连接，该浮动弹簧机构7的另一侧与后机架9相连接。所述的气罐12与后机架9连接，所述的焊接单元4和所述的旋转盘机构3设置在该涨紧机构5内。
请参阅图3、图4所示，所述的焊接单元4是由送丝机41、多组复合电缆线42、多个焊枪盒43、多个焊枪头44、多个焊枪头调整机构45、多个焊枪头举升气缸46组成，将所述的送丝机41从焊接单元4移出并设置在前机架1内。所述的多个焊枪盒43设置在旋转盘机构3上，本实施例设置有6根复合电缆线42、6个焊枪盒43、6个焊枪头44、6个焊枪头调整机构45、6个焊枪头举升气缸46。该每一个焊枪盒43包括一个焊枪头44、一个焊枪头调整机构45、一个焊枪头举升气缸46，该送丝机41与该焊枪头44通过复合电缆线42相连接，所述的焊抢头44与该焊枪头调整机构45一端相连接，该焊枪头调整机构45的另一端与所述的焊枪盒43连接。由于该送丝机41从焊接单元4中移出，消除了复合电缆线42与涨紧机构5的涨块514和顶杆513的摩擦，增加 了复合电缆线42的使用寿命，同时，简化了焊接单元的结构，故障几率减少，使得焊接单元4外形尺寸减小，缩小了两排涨块之间的距离，从而更好的将第一待焊管道14和第二待焊管道15的管口校圆并进行组对。
请参阅图11所示，所述的前机架1上布设有3套对口器13，每一个对口器13由气缸支座131、对口器气缸132、连杆133、定位块134、后压头135、定位基准面136、前压头137组成。其中，所述的气缸支座131一端安装在前支架1上，该气缸支座131的另一端与所述的对口器气缸132的一端连接，该对口器气缸132的另一端与定位块134连接，所述的连杆133与该定位块134连接，在该定位块134的前上端面设有前压头137，在该定位块134的后下端面设有后压压头135，所述的定位基准面136与该第一压头135外表面相接触。
当3个对口器气缸132分别撑起3个后压头135与定位基准面136接触，使3个后压头同在一平面内，而且此时3个前压头137与所有焊枪头44所在的平面重合，这样才能保证焊枪头44在随旋转盘36旋转焊接时才能与待焊管口16重合。实际使用过程中先将内焊机的前机架1及涨紧机构5的前半部分露出第二待焊管道15，撑起对口器气缸132，使得3个后压头135的表面分别与3个定位基准面136重合；启动驱动机构8，使得内焊机在待焊管道内向后方移动，直到3个前压头137与待焊管口16接触，此时3个后压头135的表面与定位基准面136重合，3个前压头137与待焊管口16接触，迅速撑起涨紧机构5在第二焊管道15内的涨块514，使其撑紧管道内壁，松开驱动机构8及对口器气缸132，完成对口。但由于现场施工环境比较复杂，在进行对口的过程中3个后压头135的表面与定位基准面或3个前压头137与待焊管口16其中的一个或几个并没有接触，就完成了对口操作，这样会直接影响焊接质量。
为了避免上述问题，在后压头135与定位基准面136之间和3个前压头137与待焊管口16之间增加传感器装置，在进行对口操作时，3个后压头135的表面与定位基准面136和3个前压头137与待焊管口16接触时分别对应有6个显示装置表明其是否接触，一旦其中有不接触的点，该显示装置会报警提示操作人员哪个点没有接触，并进行检查，这样就有效的保证了对口的质量，从而保证焊接的质量。
请参阅图5所示，所述的涨紧机构5为两个相同的对称结构组成，其中一个涨紧机构5由空心套筒51、第一锁紧螺母52、缸底53、缸筒、活塞54、活塞杆55、第二锁紧螺母56、第一缸盖57、第二缸盖58、铰接座59、连杆510、分配盘512、顶杆513、涨块514、导向套515、多个进气口。其中，所述的缸底53与所述的缸筒相接，该缸筒与所述的第一缸盖57相接，该第一缸盖57与所述的第二缸盖58相接共同构成涨紧机构5的内腔体，所述的导向套515设置在该内腔体的内腔中部，为中空结构。该导向套515的一端固定于位于横轴向的空心套筒51的一端，该空心套筒51的另一端通过第一锁紧螺母52固定于该缸底53，使得该空心套筒51的内腔和该导向套515的内腔相通。该空心套筒51的外圆及该导向套515外侧面为活塞杆55提供轴向滑动和支撑；设置在该空心套筒51和该导向套515外侧面的活塞杆55的一端与连杆510的一端通过铰接座59连接，该连杆510的另一端与顶杆513的底端连接，该顶杆513的上端设置有涨块514，该活塞杆55的另一端与所述的活塞54通过第二锁紧螺母56相连接，该活塞杆55 能随活塞54沿轴向运动，所述的分配盘512设置在第二缸盖58与导向套515之间，该顶杆513能沿分配盘512上的径向孔上下移动，多个进气口设置在缸筒上，本实施例设置第一进气口516和第二进气口517。所述的空心套筒51和活塞杆55之间设置有使腔体密闭密封圈及导向环。
为了保证复合电缆线42能顺利的连接到焊接盒43上，当第一进气口516进气时，压力推动活塞54沿空心套筒51运动，该活塞54与活塞杆55相连，带动活塞杆55沿轴向运动，从而带动涨紧机构5。直到活塞54底面与第一缸盖57接触后活塞54停止运动，涨紧机构5运动到最高点。当第二进气口517进气时，压力推动活塞54沿空心套筒51滑动，从而带动涨紧机构5回收，直到活塞54面与缸底53接触后活塞54停止运动，涨紧机构5运动到最低点。并且本发明能够增加气管及复合电缆线42使用寿命。
请参阅图6A、图6B所示，所述导向套515为中空结构，是由套管515a、两个连接盘515b和多个连接筋板515c组成，所述的两个连接盘515b为圆盘结构且分别位于竖直轴对称的两侧，位于横轴向的套管515a与两个连接盘515b连接形成一体结构，在两个连接盘515b之间设置多个连接筋板515c。所述内焊机导向套515的中空结构，能够保证两组以上的复合电缆线42能正常穿过，并尽可能的减少复合电缆42与其他构件的摩擦，增加复合电缆线42的使用寿命。由于导向套515中间采用两个以上的连接筋板515c连接结构，保证两组以上的气管及复合电缆线42能正常穿过，使多组气管及复合电缆线42顺利的连接到焊枪头44上。
请参阅图7所示，其中所述的旋转盘机构3是由一套旋转盘旋转驱动系统32、旋转盘36和多个旋转盘定位机构37所组成，所述的旋转盘36设置在所述的两侧分配盘512之间，与所述的分配盘512同轴设置，且在连接盘515b径向的外侧，在该分配盘512上固定有多个旋转盘旋转定位机构37，所述的一套旋转盘旋转驱动系统32与该分配盘512连接。本实施例设置9套选转盘定位机构。
请参阅图8所示，所述的旋转盘驱动系统32由旋转电机321、固定块322、固定螺钉323、轴承324、压板325、小齿轮326、键327、传动轴328组成，其中，所述的固定块322通过固定螺钉323固定在涨紧机构5的分配盘512上，使其有高精度的定位基准，所述的旋转电机321通过所述的键327与所述的传动轴328的一端相连，该传动轴328通过所述的轴承324支撑在该分配盘512上的圆孔内，该传动轴328的另一端与小齿轮326通过螺栓和压板325连接，使其保证了整套旋转驱动系统32的同轴度，保证旋转盘36转动的精度。所述固定块322固定在涨紧机构5的所述的分配盘512上，轴承324固定在分配盘512的孔内，且固定块322的固定面与轴承324固定孔有良好的垂直度，从而保证了固定在固定块322上的旋转电机321与分配盘512的同轴度。旋转电机321通过键327带动传动轴328旋转，传动轴328带动小齿轮326旋转，小齿轮326与旋转盘36的内齿圈361啮合，并带动旋转盘36转动。此过程中从旋转电机321到小齿轮326均为硬性直连，使得与旋转电机321的编码器能更准确的反应出旋转盘36的旋转角度，提高焊缝质量。
请参阅图9A、9B、9C所示，所述的旋转盘36为分体式转盘，包括内齿圈361、转盘本体362、定位连接螺栓363、连接板364、穿线孔365，其中所述的转盘本体362为分 体式结构，至少为两个弧形体组成，所述的至少两个弧形体之间通过连接板364和定位连接螺栓363固定连接构成一体式转盘本体362，该转盘本体362的内圆设置有内齿圈361，该内齿圈361与所述的旋转盘驱动系统32的小齿轮326啮合，与所述的多个焊枪盒43固定在旋转盘机构3的转盘本体362上，在该转盘本体362上所固定多个焊枪盒43位置上分别设有穿线孔365，使转盘本体362上的穿线孔362、导向套515的内腔、空心套筒51内腔形成复合电缆线42和气管由送丝机41至焊枪头44的通道。所述旋转盘36主要功能是固定并带动焊枪盒43旋转。旋转盘36设计为分体式，主要是方便安装，维护及检修，无需将涨紧机构5中的零件拆卸，直接将定位连接螺栓363松开，拆卸连接板364即可，非常方便，且效率高。
请参阅图10所示，所述旋转盘的定位机构37由多个第一销轴371、多个第一支架372、多个第一定位轮373、多个定位轴承374、多个第二定位轮375、多个第二支架376、多个导向块377、多个弹簧378、多个调节套379组成。其中所述的多个定位轴承374通过第一销轴371固定于涨紧机构5的分配盘512上，该多个定位轴承374均匀的分布在与该分配盘512同一圆周上，该多个定位轴承374的外圆与所述的旋转盘3的内圆相接触，实现径向定位。所述的多个第一支架372固定于涨紧机构5的分配盘512上，所述的每一个第一定位轮375固定在相对应的第一支架372上。所述的每一个定位轮375外圆与该旋转盘36侧面接触，实现轴向定位。所述的多个导向块377固定于涨紧机构5的分配盘512上。所述的每一个第二支架376与每一个导向块377连接。该第二支架376通过导向块377实现轴向移动，每一个第二定位轮375固定在相对应的每一第二支架376上，该导向块377上设置有弹簧378，在该导向块377的外端设有调节套379，通过该弹簧378及该调节套379能将第二定位轮375外圆压在该旋转盘36侧面上，实现轴向压紧。通过调整该调节套379与该导向块377的相对位置能改变该弹簧378的压紧力。本实施例设置9个第一销轴371、9个第一支架372、9第一定位轮373、9个定位轴承374、9个第二定位轮375、9个第二支架376、9个导向块377、9个弹簧378、9个调节套379。
所述旋转盘的定位机构37主要功能是保证旋转盘3与分配盘512的相对位置关系，即保证旋转盘36的轴向及径向定位。多个定位轴承374的外圆与所述的旋转盘36的内圆相接触，且多个定位轴承374通过第一销轴371均匀的分布在分配盘512的同一圆周上，因此保证了旋转盘3与分配盘512的同轴度，实现了旋转盘36的径向定位。所述的每一个定位轮375外圆与该旋转盘36侧面接触，并且每一个定位轮375到分配盘512的距离一致，从而保证了旋转盘36与分配盘512的平行度，实现了旋转盘36的轴向定位。导向块377固定在分配盘512上，且第二支架376能在导向块377内实现轴向滑动，调节套379通过螺纹与导向块377相连，通过调整调节套379与导向块377的间距来改变安装在调节套379与第二支架376之间弹簧378的预紧力，使得第二支架376带动第二定位轮375压紧旋转盘36侧面，实现旋转盘36的轴向压紧。
内焊机前机架1、中机架6、后机架9主要是用来固定其他机构，并为其他机构提供防护，它们组成了内焊机的主体框架。控制系统主要用来实现操作人员对内焊机的一切操控。对口器13用来实现内焊机的对口功能，保证多个焊枪头44在随旋转盘 36旋转时能与待焊管口16在同一平面内。焊接单元4主要是实现待焊管口16的焊接。涨紧机构5的两排涨块514分别在两根第一待焊管道14和第二带焊管道15内，当涨紧机构5涨紧时能保证两根待焊管道的同轴度，并且能将待焊管道的管口进行校圆，从而保证焊枪头44到待焊管口16的距离不发生变化，保证焊接质量。浮动弹簧机构7主要用来弹性连接中机架6和后机架9，保证在对口器13在对口过程中能尽可能的将涨紧机构5的自由度释放，保证对口质量，并且，浮弹簧动机构7能保证自动焊在带有一定弯度的管道内行走时的通过性。驱动机构8主要用来给自动焊提供前进或后退的动力。刹车机构10是施工中保证安全施工的重要措施，本结构内焊机采用驱动机构8和刹车机构10互锁设计，即在驱动机构8带动内焊机前进或后退时刹车同步解除，在内焊机停止行走时，刹车机构10自动撑紧，使得刹车板撑紧管道内壁以达到防止内焊机的溜滑，保证现场施工的安全。行走机构11主要用来将内焊机支撑在管道内，来实现内焊机的行走。气罐12主要作用是在一定时间内为内焊机提供气源，保证内焊机上的各个气动元件能正常工作。
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

  1. 一种管道用气体保护焊式内焊机，包括：前机架(1)、对口器(13)、旋转盘机构(3)、焊接单元(4)、涨紧机构(5)，中机架(6)、浮动弹簧机构(7)、驱动机构(8)、后机架(9)、刹车机构(10)、行走机构(11)、气罐(12)，其中，所述的前机架(1)内安装有控制系统(2)及对口器(13)，该中机架(6)与所述的后机架(9)中间安装有浮动弹簧机构(7)，该后机架(9)上顺序安装有驱动机构(8)、刹车机构(10)和行走机构(11)，所述的涨紧机构(5)一侧安装在前机架(1)上，该涨紧机构5的另一侧安装在中机架(6)上，所述的浮动弹簧机构(7)的一侧与该中机架(6)相连接，该浮动弹簧机构7的另一侧与该后机架(9)相连接，所述的气罐(12)与该后机架(9)连接，所述的焊接单元(4)和所述的旋转盘机构(3)设置在该涨紧机构(5)内，其特征在于：其中所述的焊接单元(4)是由送丝机(41)、多组复合电缆线(42)、多个焊枪盒(43)、多个焊枪头(44)、多个焊枪头调整机构(45)、多个焊枪头举升气缸(46)组成，将所述的送丝机(41)从焊接单元(4)移出并设置在前机架(1)内，所述的多个焊枪盒(43)设置在旋转盘机构(3)上，该每一个焊枪盒43包括一个焊枪头(44)、一个焊枪头调整机构(45)、一个焊枪头举升气缸(46)，该送丝机41与该焊枪头(44)通过复合电缆线(42)相连接，所述的焊抢头(44)与该焊枪头调整机构(45)一端相连接。
  2. 如权利要求1所述的管道用气体保护焊式内焊机，其特征在于其中所述的前机架(1)上布设有3套对口器(13)，每一个对口器(13)由气缸支座(131)、对口器气缸(132)、连杆(133)、定位块(134)、后压头(135)、定位基准面(136)、前压头(137)组成，其中，所述的气缸支座(131)一端安装在前支架(1)上，该气缸支座(131)的另一端与所述的对口器气缸(132)的一端连接，该对口器气缸(132)的另一端与定位块(134)连接，所述的连杆(133)与该定位块(134)连接，在该定位块(134)的前上端面设有前压头(137)，在该定位块(134)的后下端面设有后压头(135)，当对口器气缸(132)撑起，将后压头(135)外表面与所述的定位基准面(136)的表面相接触，使3个后压头(135)同在一个平面上，且此时3个前压头137与所有的焊枪头(44)所在的平面重合，以便保证焊枪头(44)在随旋转盘机构(3)旋转焊接时能与待焊管口(16)重合。
  3. 如权利要求1所述的管道用气体保护焊式内焊机，其特征在于其中所述的涨紧机构(5)为两个相同的对称结构组成，其中一个涨紧机构5由空心套筒(51)、第一锁紧螺母(52)、缸底(53)、缸筒、活塞(54)、活塞杆(55)、第二锁紧螺母(56)、第一缸盖(57)、第二缸盖(58)、铰接座(59)、连杆(510)、分配盘(512)、顶杆(513)、涨块(514)、导向套(515)、多个进气口组成，其中，所述的缸底(53)与所述的缸筒相接，该缸筒与所述的第一缸盖(57)相接，该第一缸盖(57)与所述的第二缸盖(58)相接共同构成涨紧机构(5)的内腔体，所述的导向套(515)设置在该内腔体的内腔中部，为中空结构，该导向套(515)的一端固定于位于横轴向的空心套筒(51)的一端，该空心套筒(51)的另一端通过第一锁紧螺母(52)固定于该缸底(53)，使得该空心套筒(51)的内腔和该导向套(515)的内腔相通，该空心套筒 (51)的外圆及该导向套515外侧面为所述的活塞杆(55)提供轴向滑动和支撑；设置在该空心套筒(51)和该导向套(515)外侧面的活塞杆(55)的一端与连杆(510)的一端通过铰接座(59)连接，该连杆(510)的另一端与顶杆(513)的底端连接，该顶杆(513)的上端设置有涨块(514)，该活塞杆(55)的另一端与所述的活塞(54)通过第二锁紧螺母(56)相连接，该活塞杆(55)能随该活塞(54)沿轴向运动，所述的分配盘(512)设置在第二缸盖(58)与导向套(515)之间，该顶杆(513)能沿该分配盘(512)上的径向孔上下移动，多个进气口设置在缸筒上。
  4. 如权利要求1-3中任意一项所述的管道用气体保护焊式内焊机，其特征在于所述导向套(515)是由套管(515a)、两个连接盘(515b)和多个连接筋板(515c)组成，所述的两个连接盘(515b)为圆盘结构且分别位于竖直轴对称的两侧，位于横轴向的套管(515a)与两个连接盘(515b)连接形成一体结构，在两个连接盘(515b)之间设置多个连接筋板(515c)。
  5. 如权利要求4所述的管道用气体保护焊式内焊机，其特征在于其中所述的旋转盘机构(3)是由一套旋转盘旋转驱动系统(32)、旋转盘(36)和多个旋转盘定位机构(37)所组成，所述的旋转盘(36)设置在所述的两侧分配盘(512)之间，与所述的分配盘(512)同轴设置，且在所述的连接盘(515b)径向的外侧，在该分配盘(512)上固定有多个旋转盘定位机构(37)，所述的一套旋转盘旋转驱动系统(32)与该分配盘(512)连接。
  6. 如权利要求5所述的管道用气体保护焊式内焊机，其特征在于所述的旋转盘驱动系统(32)由旋转电机(321)、固定块(322)、固定螺钉(323)、轴承(324)、压板(325)、小齿轮(326)、键(327)、传动轴(328)组成，其中，所述的固定块(322)固定在所述的涨紧机构(5)的分配盘(512)上，使其有高精度的定位基准，所述的旋转电机(321)通过所述的键(327)与所述的传动轴(328)的一端相连，该传动轴(328)通过所述的轴承(324)支撑在所述的分配盘(512)上的圆孔内，该传动轴(328)的另一端与小齿轮(326)通过螺栓和压板(325)连接，使其保证了该整套旋转驱动系统(32)的同轴度，保证了所述的旋转盘(36)转动的精度。
  7. 如权利要求5所述的管道用气体保护焊式内焊机，其特征在于所述的旋转盘(36)为分体式转盘，包括内齿圈(361)、转盘本体(362)、定位连接螺栓(363)、连接板(364)、穿线孔(365)，其中所述的转盘本体(362)为分体式结构，至少为两个弧形体组成，所述的至少两个弧形体之间通过连接板(364)和定位连接螺栓(363)固定连接构成一体式转盘本体(362)，该转盘本体(362)的内圆设置有内齿圈(361)，该内齿圈361与所述的旋转盘驱动系统(32)的小齿轮(326)啮合，与所述的多个焊枪盒(43)固定在旋转盘机构(3)的转盘本体(362)上，在该转盘本体(362)上所固定多个焊枪盒(43)位置上分别设有穿线孔(365)，使转盘本体(362)上的穿线孔(362)、导向套(515)的内腔、空心套筒(51)内腔形成复合电缆线(42)由送丝机(41)至焊枪头(44)的通道。
  8. 如权利要求5所述的管道用气体保护焊式内焊机，其特征在于所述旋转盘的定位机构(37)由多个第一销轴(371)、多个第一支架(372)、多个第一定 位轮(373)、多个定位轴承(374)、多个第二定位轮(375)、多个第二支架(376)、多个导向块(377)、多个弹簧(378)、多个调节套(379)组成，其中，所述的多个定位轴承(374)通过第一销轴(371)固定于所述的涨紧机构(5)的分配盘(512)上，该多个定位轴承(374)均匀的分布在与该分配盘(512)同一圆周上，该多个定位轴承(374)的外圆与所述的旋转盘(36)的内圆相接触，实现径向定位；多个第一支架(372)固定于该涨紧机构(5)的分配盘(512)上，所述的每一个第一定位轮375固定在相对应的第一支架(372)上，所述的每一个定位轮(375)外圆与该旋转盘(36)侧面接触，实现轴向定位；所述的多个导向块(377)固定于该涨紧机构(5)的分配盘(512)上，所述的每一个第二支架(376)与每一个导向块(377)连接，该第二支架(376)通过导向块(377)实现轴向移动，每一个第二定位轮(375)固定在相对应的每一第二支架(376)上，该导向块(377)上设置有弹簧(378)，在该导向块(377)的外端设有调节套(379)，通过该弹簧(378)及该调节套(379)能将第二定位轮(375)外圆压在该旋转盘(36)侧面上实现轴向压紧，通过调整该调节套(379)与该导向块(377)的相对位置能改变该弹簧(378)的压紧力。
  9. 如权利要求2所述的管道用气体保护焊式内焊机，其特征在于所述的空心套筒(51)和活塞杆(55)之间设置有使腔体密闭密封圈及导向环。
  10. 如权利要求3所述管道用气体保护焊式内焊机，其特征在于在所述的每一个后压头(135)与所述的定位基准面(136)之间和所述的前压头(137)与待焊管口(16)之间增加传感器装置，在进行对口操作时，所述后压头(135)的表面与该定位基准面(136)和该前压头(135)与待焊管口接触时分别对应有6个显示装置以表明其是否接触。
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