CN2218621Y

CN2218621Y - Large diameter bend pipe parts lofting cutter

Info

Publication number: CN2218621Y
Application number: CN 93242975
Authority: CN
Inventors: 董家清; 刘大尧; 胡文; 赵文喜; 李东生; 汪宾
Original assignee: Water Supply And Sewerage Works Co Changjiang Gezhouba Engineer Bwreau China
Current assignee: Water Supply And Sewerage Works Co Changjiang Gezhouba Engineer Bwreau China
Priority date: 1993-10-20
Filing date: 1993-10-20
Publication date: 1996-01-31
Anticipated expiration: 2003-10-20

Abstract

The utility model relates to a large diameter bend pipe part lofting cutter, which is construction machinery for fixing buildings. The large diameter bend pipe parts lofting cutter is suitable for the installing engineering of water supply and drain pipelines, and is used for making large diameter steel pipe break angle bend pipe parts. The large diameter bend pipe parts lofting cutter makes large diameter break angle bend pipe parts. The cutter provides a profiling mechanism, and is composed of a clamping mechanism, a correcting mechanism, a driving mechanism and working mechanism. The large diameter bend pipe parts lofting cutter can directly finish lofting cutting according to required bent angle. The quality is good; the work efficiency is enhanced doubly. The cutter is really a necessary tool for pipeline engineering.

Description

Major diameter bend pipe tools setting-out cutting machine

The utility model belongs to the fixed buildings construction machinery.

The utility model is used for the setting-out of steel pipe elbow, and cutting especially is suitable for the making of pipeline engineering major diameter elbow.

In the installation, maintenance engineering of pipeline, need to use the union elbow of various different angles.Large diameter elbow does not have commercially available product, is generally all made by oneself by the unit of undertaking the construction of.Technique known is with the intersection planar development drawing method line of cut that draws on pipeline, cutting again, welding forming.Obviously, this manual lofting efficient is low, and low precision is difficult to ensure the quality of products.

The purpose of this utility model is to finish setting-out with machinery, and cutting also can unite two into one and once finish the elbow cutting, thereby has efficient accurate advantage.

The technical scheme that reaches this target is the feeler mechanism of design one cover parallelogram, is one side of parallelogram with the axis of pipeline, and its opposite side can be around this axis revolution; The arm adjacent with conduit axis, then also equate to change around the rotating angle of conduit axis with levelling arm corresponding work arm, and the track of working arm end outside pipeline promptly is line of cut when the angle degree when between the two changes on the levelling arm.Obviously, if working arm is a cutting torch, then can once finish cutting process.

Fig. 1: schematic diagram of mechanism Fig. 2: elbow villous themeda part shaping sketch

Fig. 3: the total figure Fig. 4 of setting-out cutting machine: opaque camera is always schemed

Fig. 5: cutting machine drawing in side sectional elevation

Shown in Figure 1, part 1 is a clamp mechanism, is clamped on part 6 tube walls; Part 2 is mandrels, with the dead in line in part 6 villous themeda roads; Part 3 is levelling arms, can align with the angle of part 2 mandrels; Part 4 is actuating arms; Part 5 is working arms, and its bottom G contacts with pipeline outer wall.Obviously, when part 4 actuating arm drivening pieces 3 levelling revolution of arms, the track that G is ordered promptly is the line of cut of required bend pipe tools.

Shown in Figure 2, along the pipe fitting 7 of PM plane cutting, rotate 180 back welding, promptly form a joint bend pipe tools.Obviously, the angle of elbow is 2 times of levelling arm angle α, i.e. β=2 α.

Fig. 3 is that the setting-out cutting machine is always schemed

Among Fig. 3, clamp mechanism is similar in appearance to the three-jaw chuck of lathe.By the tooth bar 25 of gear 24, three even (angle is 120 ° mutually), baffle plate 26, nut 27, mandrel 12, tube 31, big nut 28 compositions such as grade, wherein, tube 31 is welded on the baffle plate 26, on the circumference of tube 31 three rectangular openings is arranged, and allows that tooth bar 25 slides in this hole; Helical gear 24 is enclosed within on the tube 31 on the cylindrical, can relatively rotate; Big nut 28 has limited the axial displacement of helical gear 24.When helical gear 24 clockwise rotated, 24 drive three toothed rack 25 outwards opened synchronously, and when the pressing plate 30 of tooth bar end contacted with the inwall of steel pipe 29, clamp mechanism just connected together with steel pipe 29.The center line of mandrel 12 that is to say the center line of steel pipe 29 at this moment.

Levelling mechanism sells 11 by half garden dish 10, bolt 14, and mandrel 12, bearing 13, bar 15 compositions such as grade, an end of semi-disc 10 is welded with sleeve, on this sleeve outer ring bearing 13 is housed; The outer ring of bearing 13 is contained in the dish of bar 15 lower ends, and pin 11 connects together half garden dish 10 and mandrel 12, but still can relatively rotate; Sell on the diameter of 11 seats and mandrel 12 axis normal, bolt 14 passes mandrel 12, is arranged in the arc groove on the half garden dish 10, and when half garden dish 10 is the garden heart with pin 11, after tightening with respect to mandrel 12 bolts, this angle remains unchanged.Obviously, bar 15 is swung with semi-disc 10, and can freely rotate with respect to mandrel 12.

Driving mechanism is a power with commercially available semi-automatic cutting dolly 18, roll in the garden outside cylinder 29, is fixed with three rollers 32 on dolly 18 in addition, and hollow shaft 17 in their clampings, hollow shaft 17 can slide between part 32, because the roller in part 32 bottoms has protruding key, be stuck in the groove of axle 17, so 17 cunnings of axle are not changeed, axle 17 bar 15 in 16 clampings of left end roller, bar 15 can slide between roller 16, and extension rod 20 is contained in hollow shaft 17 inside, and screw 19 plays the tightening effect.When screw 19 unclamps, bar 20 extended or retractions.

Operating mechanism is by being connected in anchor clamps 21 cutting torches 22 that extend rod end, wing nut 23 compositions such as grade.Cutting torch 22 moves up and down in anchor clamps 21, when the wing nut 23 of levelling after suitable fastening it.

When dolly 18 rolled on tube 29 surfaces, the motion cutting torch 22 that hollow shaft 17 works are parallel to tube 29 axis can carry out cutting operation.

Shown in Figure 4 is that opaque camera is always schemed, and is another embodiment of the present utility model, and different with Fig. 3 is that unpowered dolly 34 has replaced electric power dolly 18, and scriber 35 has replaced cutting torch 22, in order to improve the adhesion property of dolly, in the wheel 36 permanent magnet is housed.Only mark line of cut when the purpose of opaque camera is pipeline construction in the open air, finish cutting work in the place preferably in condition again in steel pipe appearance to be cut.

The utility model is applicable to the steel pipe of ∮ 350-∮ 2000.

Claims

1, a kind of major diameter bend pipe tools setting-out cutting machine is characterized in that:

Clamp mechanism, by helical gear (24), three tooth bars (25) of radial equipartition, baffle plate (26), nut (27), mandrel (12), big nut (28), pressing plate compositions such as (30) is used to be positioned steel cylinder inwall to be cut,

Levelling mechanism, by half garden dish (10), pin (11), bolt (14), mandrel (12), bearing (13), bar compositions such as (15) is used to align the duty of mechanism;

Driving mechanism, by dolly (18), roller (32), hollow shaft (17), extension rod (20), roller set compositions such as (16) is used to drive each part of this machine to make circular motion along steel cylinder;

Operating mechanism, by anchor clamps (21), cutting torch (22), wing nut compositions such as (23) is used for cutting (or setting-out).

2, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that: three tooth bars (25) of clamp mechanism radial equipartition are located in three rectangle slotted eyes of tube on (31) circumference, when helical gear (24) rotated, three tooth bars (25) that are meshed slided in the groove inter-sync.

3, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that: the levelling bar (15) of levelling mechanism is around pin (11) revolution, and pin (11) is positioned at the end of hold-down mechanism mandrel (12), and with the perpendicular diameter of mandrel (12) on.

4, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that: driving mechanism, can only be slided betwixt and can not rotate by three rollers (32) clamping on the dolly (18) by hollow shaft (17).

5, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that:

Driving mechanism hollow shaft (17) is stranded with levelling mechanism's bar (15), and stranded position can change with the variation of diameter of steel tube.

6, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that operating mechanism: the anchor clamps (21) of cutting torch (22) [or scriber (35)] are positioned at the top of driving mechanism extension rod (20), and its attitude is adjustable, is clamped by wing nut (23).

7, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that aligning mechanism: the angle of bar (15) levelling is to wait to make half of elbow knuckle degree.

8, by the described major diameter bend pipe tools of claim 1 setting-out cutting machine, it is characterized in that: the pipe fitting diameter range is between φ 350～φ 2000.