CN207655698U - Full circle roller devices for elbow port rounding machine - Google Patents

Abstract

The utility model discloses a kind of full circle roller devices for elbow port rounding machine, including interior top idler wheel adjustment mechanism and outer pressing roller adjustment mechanism；The interior top idler wheel adjustment mechanism includes interior top rolling wheel support and interior top roll wheel assembly；The outer pressing roller adjustment mechanism includes two L-shaped external pressure ler spindle seat boards, and the external pressure roll wheel assembly parallel with the external pressure ler spindle seat board long side；The mechanism that is slidably connected is set between the interior top rolling wheel support and the external pressure ler spindle seat board；The side that the external pressure ler spindle seat board is contacted with the interior top idler wheel and the outer pressing roller, which is equipped with, is oriented to dovetail groove, and the interior top idler wheel and the outer pressing roller are equipped in the sliding block for being oriented to dovetail groove internal slide；Second screw rod is two sections of diameters and screw pitch difference, oppositely oriented T-type differential screw arbor.The utility model uses on the rounding machine of elbow port, can the oval port of the normal bend after cutting be carried out full circle；The utility model is simple in structure, easy to use, is suitable for promoting.

Description

Full circle roller devices for elbow port rounding machine

Technical field

The present invention relates to a kind of elbow port rounding devices, and elbow port rounding machine is used for more specifically to one kind Full circle roller devices.

Background technology

In tube design peculiar to vessel and manufacturing process, according to piping layout, there are a large amount of crooked positions to need to use non-standard angle Spend elbow.China's major part elbow manufacturer elbow processing at present is all standard using sizing forging dies or casting, product Elbow.Non-standard angle elbow needs special dies to make, therefore manufacturing cost is higher, and the order cycle time is longer.

Shipbuilding is a system engineering, is required closely productive temp, it is possible to because in an important system The slow arrival of some non-standard angle elbow influences entire ship building period.It is especially embedding in segment folding and mooring The pipe production phase is mended, the tube manufacture period is more nervous, influences delivery.Therefore the manufacturing cycle of non-standard elbow is required non- It is often urgent.

For previous major part shipyard in the non-standard elbow of emergency, the method for being all made of scribing line cutting by hand utilizes standard Elbow interception obtains, serious oval in the middle part of elbow due to normal bend production technology problem, and by hand can not processing specification slope Mouthful, the non-standard angle elbow that this method obtains assembles, welding quality is seriously restricted, especially in I grades of pipes make It is difficult to meet flaw detection to require.Therefore need a kind of dedicated elbow cutter device realize realized while being cut to elbow it is curved The processing of head groove.

Invention content

It, can be in elbow port present invention aims at a kind of full circle roller devices for elbow port rounding machine are provided Used on rounding machine, ensure full circle work be smoothed out, solve normal bend cutting rear port it is seriously oval, after being unfavorable for The technical issues of continuous assembly.

In order to achieve the above object, the present invention provides a kind of full circle roller devices for elbow port rounding machine, including Interior top idler wheel adjustment mechanism and outer pressing roller adjustment mechanism.

The interior top idler wheel adjustment mechanism includes the interior top rolling wheel support of the intermediate strip for being equipped with mounting hole, in the peace Fill hole has outwardly projecting two the first flanges along the both sides of the interior top rolling wheel support length direction, and two described first convex Edge is equipped with two first through hole parallel with the interior top rolling wheel support, and the inside of two first through hole is equipped with along phase The interior top roll wheel assembly of negative direction setting, the interior top roll wheel assembly includes across the first through hole and outside is equipped with screw thread The first screw rod, and be rotatably connected on the interior top idler wheel of the described one end of first screw rod far from the mounting hole；Described in two Intermediate adjusting nut is equipped between first flange, the other end of first screw rod is screwed onto the inside of the adjusting nut.

When rotating the adjusting nut, two it is described it is interior top roll wheel assemblies simultaneously to far from the adjusting nut direction or It is moved to close to the direction of the adjusting nut.

The outer pressing roller adjustment mechanism includes two L-shaped external pressure ler spindle seat boards, two external pressure ler spindle seat boards Long side is fixedly connected on the both sides of the interior top rolling wheel support, the short side of two external pressure ler spindle seat boards and first flange At opposition shape；The second through-hole that inside opens up screw thread is equipped in the middle part of the short side of two external pressure ler spindle seat boards, described second is logical The external pressure roll wheel assembly parallel with the external pressure ler spindle seat board long side is equipped with inside hole；The external pressure roll wheel assembly includes being spirally connected The second screw rod inside second through-hole, and second screw rod is rotatably connected on close to the interior top roll wheel assembly one The outer pressing roller at end, the other end of second screw rod are connected with adjustment handwheel.

When rotating the adjustment handwheel, the external pressure roll wheel assembly is to far from the interior top roll wheel assembly direction or close to institute State the interior top roll wheel assembly direction movement.

The full circle space for accommodating elbow port tube wall is formed between the outer pressing roller and the interior top idler wheel.

The above-mentioned full circle roller devices for elbow port rounding machine, under preferred embodiment, the interior top rolling wheel support and institute It states setting between external pressure ler spindle seat board to be slidably connected mechanism, the mechanism that is slidably connected includes along the interior top rolling wheel support length The sliding rail of direction setting, and the sliding slot that the sliding rail is accommodated in the long side of the external pressure ler spindle seat board is set；The external pressure Position of the ler spindle seat board on the interior top rolling wheel support can pass through the institutional adjustment that is slidably connected.

The above-mentioned full circle roller devices for elbow port rounding machine, under preferred embodiment, the interior top rolling wheel support and institute The long side for stating external pressure ler spindle seat board is fixed by multigroup bolt.

The above-mentioned full circle roller devices for elbow port rounding machine, under preferred embodiment, the external pressure ler spindle seat board and institute The side for stating interior top idler wheel and the outer pressing roller contact is equipped with guiding dovetail groove, and the interior top idler wheel and the outer pressing roller are set Have in the sliding block for being oriented to dovetail groove internal slide.

The above-mentioned full circle roller devices for elbow port rounding machine, under preferred embodiment, second screw rod is two sections straight Diameter and screw pitch are different, oppositely oriented T-type differential screw arbor, the thinner one section of end of the second screw rod be screwed onto be set to it is described In the threaded hole of external pressure roller end portions；Thicker one section of second screw rod is screwed onto in second through-hole, second spiral shell One section of thicker end of bar, which is connected, adjusts handwheel.

The present invention can use on the rounding machine of elbow port, can ensure being smoothed out for full circle work, solve mark Quasi- elbow cutting rear port is seriously oval, and the technical issues of being unfavorable for subsequently assembling, the configuration of the present invention is simple is easy to use, fits In popularization.

Description of the drawings

Fig. 1 is elbow assembly schematic diagram；

Fig. 2 is the non-standard angle assembly schematic diagram of elbow；

Fig. 3 is the symmetrical full circle schematic diagram of elbow；

Fig. 4 is the symmetrical full circle force analysis figure of elbow；

Fig. 5 is the structural schematic diagram of pedestal, hand wheel device, elbow clamping device；

Fig. 6 is the structural schematic diagram of drive shaft；

Fig. 7 is elbow cut-out groove schematic diagram；

Fig. 8 is elbow cut-out groove equipment figure；

Fig. 9 is elbow full circle equipment figure；

Figure 10 is the structural schematic diagram of full circle roller devices；

Figure 11 is the main structure figure of interior top rolling wheel support；

Figure 12 is the left view structure chart of interior top rolling wheel support；

Figure 13 is the overlooking structure figure of interior top rolling wheel support；

Figure 14 is the main structure figure of external pressure ler spindle seat board；

Figure 15 is the left view structure chart of external pressure ler spindle seat board；

Figure 16 is the structural schematic diagram of the second screw rod and adjustment handwheel；

Figure 17 is the structural schematic diagram of elbow clamping device；

Figure 18 is the structural schematic diagram of ring shaped heating mechanism；

Figure 19 is the structural schematic diagram of elbow cutter device.

Specific implementation mode

As shown in Figure 1, we make a turntable 503 by normal bend shape feature, normal bend 10 is placed on On turntable 503.Elbow position is accurately positioned, then by rotating turntable 503, the circle centre position in elbow radius of curvature is arranged Hinge 505 is rotation center, no matter rotates how many degree, and elbow axis is forever tangent at one with formal construction 11 axis of pipe of hypothesis On fixed point, our this point is referred to as " eternal point of contact p "." the eternal point of contact p " of different bore elbows all one with It is assumed that formally in the fixing line of construction 11 axis perpendicular of pipe, and the cutting line for the elbow 10 that this line will be cut with us Track is to overlap, therefore we are referred to as " eternal tangent line q ".

As shown in Fig. 2, after the angle that rotating elbow is needed to us, at " eternal tangent line q " excessively and perpendicular to pedestal Corresponding position is marked on the outside of the elbow section of 506 planes, beginning and end when by as cutting.Finally elbow is utilized to cut off Groove full circle all-in-one machine will need cut-out n to cut away.

The core of its principle is no matter which kind of angle normal bend 10 goes to, and cutting line must vertically assume formally to construct 11 axis of pipe allows be cut partly moving on to dash area.Elbow cutting line port is positive round forever with the formal construction pipe port of hypothesis To positive round, cuts end face for elbow and ensure providing with follow-up formal construction pipe group.

Although we have accurately intercepted the elbow of the non-standard number of degrees, since elbow substantially uses shaper What hot forging made, due to being limited by technique, all there is one section of Free Transform section in outside among elbow, this section of ovality compared with Greatly.And the elbow after cutting will generate certain deformation, therefore circularity can be affected to some extent due to the release of internal stress. Quality to influence the pipe fitting assembly of subsequent handling and weld etc..Therefore it needs to carry out full circle to elbow port.It is previous each curved Head manufacturing factory full circle all by the way of stock mould and hydraulic press forging and stamping.This method equipment investment cost is big, tooling loose tool It is complicated various.It is considered that the elliptical diameter of elbow is divided into short axle and long axis, just because of elbow and pipe end face, there are short axles With the difference of long axis, just certain unfitness of butt joint is necessarily will produce in assembly.Ordinary circumstance, elliptical long axis will be greater than setting for elbow Standard size is counted, and short axle is then less than the design standard size of elbow, therefore we can be by inwardly squeezing in transverse Elbow ends are carried out full circle by pressure, the mode ejected outward in ellipse short shaft.

Concrete principle on the inside of elbow ends as shown in figure 3, push up roll wheel assembly 206, outside is accordingly arranged one in setting one External pressure roll wheel assembly 201, inside and outside idler wheel form a concentric roller group.It is rotated around shaft 102 by roller group, mating Ring shaped heating mechanism heating after, inside and outside idler wheel manually rotates, when rotation to transverse when on the outside of roller stress inwardly squeeze, Rotation to inside roller stress when ellipse short shaft ejects outward, by multiple microfeed, rotates, is set until being fully achieved repeatedly The positive round of meter standard.

As shown in figure 4, its principle key be it is outer extruding and it is interior ejection all simultaneously in elliptical long axis or short axle both ends, idler wheel Group stress is two groups of opposite active forces of direction equal in magnitude always, i.e.,：

When long axis：F presses 1=F that 2 F is pressed to become 1=F changes 2,

When short axle：F pushes up 1=F and pushes up 2 F change 3=F changes 4,

It is zero that active force is cancelled out each other in mandrel.I.e.：Uniform force.Since roller group uses symmetrical structure, 360 ° of full circle effect can be reached by being rotated within the scope of 180 ° repeatedly just, and efficiency is greatly improved, and reach the design reason of symmetrical shaping It reads.

Equally, this method is readily applicable to the pipe end full circle of construction.

Elbow cuts away the low-angle on elbow when cutting, retain the elbow wide-angle of our needs, such as we need One 78 ° of non-standard angle elbow, we can select 90 ° of normal bend to cut away 12 °；Need one 56 ° non-standard Angle elbow, we can cut away 4 ° with 60 ° of normal bends.40 ° or 20 ° of non-standard angle elbow is also needed, we can be with It is intercepted using 45 ° or 30 ° of normal bends.

In practical applications, even normal bend, it is also possible to error occur.Therefore we need to be examined with angel measuring instrument It whether accurate tests angle of bend, if any error log error, and should be modified in assembly, to avoid cutting aftershaping elbow Angular error.If examination criteria angle of bend should not enough prescind inadequate angle value less in by cutting angle of bend, such as examine It is bigger then opposite to survey angle of bend.

There is also ellipticity errors for the port of normal bend, in order to ensure that the center of end face of elbow is accurately positioned in " forever Point of contact p " on, it would be desirable to the major and minor axis of elbow is measured.

As shown in figure 5, the global design of elbow cut-out groove full circle all-in-one machine includes pedestal 6, is fixed on 6 top of pedestal Hand wheel rotating device 1, mobile foundation 7, the slot being arranged on the mobile foundation 7 and the elbow for elbow rotational positioning The mechanisms such as clamping device 5；The bottom end of ring shaped heating mechanism 3 and elbow clamping device 4 can be by being inserted into the slot and institute State the connection of mobile foundation 7.

Handwheel transmission device 1 is the power source and transmission mechanism entirely equipped, and electronic and hand can be used in this equipment power source It is two kinds dynamic.Wherein electric-powered input is made of motor and retarder.Torque and speed needed for this equipment are all very low, manual transmission It can meet completely, novel based on this equipment principle, maintaining is convenient, swift to operate, and the present invention is using manual transmission as moving Power source illustrates to be designed, and is also therefore named as handwheel transmission device.

Pedestal 6 is the device of support and connection various functions mechanism, and the side of pedestal 6 is designed with the vertical of support transmission device Plate 101, the other end is designed with sliding slot, for installing mobile foundation 7, is designed with bolt hole on 6 tablet of pedestal, can be showed according to work Entire equipment is installed on platform or truss by field situation.

Handwheel transmission device is located at 6 side of pedestal, and two risers 101 are designed on pedestal 6, are used to support handwheel transmission mechanism 1 Shaft 102.Shaft 102 is connect with riser 101 using sliding bearing, and sliding bearing makes of tin bronze, inside opens up oil groove, with Slowly running when adapting to cutting and full circle.

As shown in Figure 5, Figure 6, shaft 102 is located at two risers, 101 intermediate position and is designed to hexagon, for being driven.Turning Power is transmitted to each functional unit by 102 hexagon Position Design of axis, one larger manual hand wheels 103 by rotating handwheel 103.Shaft 102 axle stretch ends are designed to regular quadrangle, connecting interface when as replacement various functions component, such as cutting mechanism and full circle rolling Wheel group.

The other side of pedestal 6 is mobile chute, and for installing mobile foundation 7, mobile foundation 7 may be implemented to fill mobile chute The function of the different stations such as standby cutting elbow, heating end face of elbow.In order to realize the movement of mobile foundation 7, in 6 this side of pedestal A set of eccentric rod gear 8 is designed in end, when elbow needs to be moved along, depresses eccentric handle 801, eccentric handle 801 is revolved Turn, link mechanism rotates with movable pedestal connects hinge and pedestal is pushed to be moved along；When elbow position needs to step back, then Pull-up eccentric handle 801.Elbow clamping device 5 of the setting for elbow rotational positioning on mobile foundation 7, the elbow clamping dress It includes the turntable 501 adjusted for angle of bend to set 5, and the left end of the turntable 501 is hinged on by hinge is set to described turn On the turntable seat board of 501 lower section of disk；Turntable 501 for elbow positioning, be loaded and angle adjustment, therefore set on turntable 501 It leading screw rotation hand wheel 503 in respect of leading screw V-block mechanism 502, for adjusting 502 position of leading screw V-block mechanism and is used for Control the fan angle adjustment riser 504 of 501 rotation angle of the turntable；It is provided with arc on the fan angle adjustment riser 504 Shape sliding slot and corresponding scale or directly precision to be used for 0.01 degree of angel measuring instrument (not shown) to be placed in turntable 501 enterprising Row angle measurement.

A straight pin 505 is respectively stretched out in 501 both sides of the turntable, and the straight pin 505 is left in the turntable 501 to be arranged The hinge at end is center of circle rotary motion in the arc chute；With adjustable stud between turntable seat board and movable pedestal 7 Connection, i.e. turntable height adjuster 507 can be realized different bore elbows flexural center and adjust up and down in this way, different size Elbow cuts the center of end face, that is, " eternal point of contact p " will be fallen on the same point, and this point will be in drive shaft 102 axis is tangent.

The cut-out groove full circle principle of non-standard angle elbow be no matter normal bend 10 how to rotate its cutting line necessary Perpendicular to formal construction 11 axis of pipe of hypothesis, that is, 102 axis of this equipment shaft.

The elbow that certain angle obtains non-standard angle is intercepted from normal bend.Its specific equipment configuration as shown in figure 8, Including pedestal 6, the hand wheel rotating device 1 for being fixed on the top of pedestal 6, mobile foundation 7, the slot on the mobile foundation 7, And the mechanisms such as elbow clamping device 5 for elbow rotational positioning, the end of the shaft 102 of the hand wheel rotating device 1 connect It is connected to elbow cutter device.At this point, ring shaped heating mechanism 3 and elbow clamping device 4 are without assembly.

As shown in figure 19, elbow cutter device 9, by 904 groups of radial regulation device 901, length adjuster 902 and cutting torch At.For the radial regulation device medium design at square hole, the square shaft of drive shaft 102, which stretches to be inserted into square hole, realizes driving force Input.The both sides of the radial regulation device 901 are the wing plate for offering the first elongated slot, and two length adjusters 902 are distinguished It is installed on the first elongated slot of 901 wing plates on two sides of the radial regulation device.Two length adjusters 902 pass through first respectively Housing pin is installed in a movable manner on the first elongated slot of 901 wing plates on two sides of the radial regulation device.

Two length adjusters 902 are telescope structure, the end of two length adjusters 902 End is provided with the second elongated slot, is installed with two cutting torches 904 that working end is oppositely arranged on two second elongated slots respectively；It is described The inlet end of cutting torch 904 is connected with gas source pipe 903.

The cutting torch 904 is connected to the length adjuster 902 the second housing pin in a manner of adjustable angle The second elongated slot on.

Cutting torch 904 is adjusted to corresponding position when cutting, that is, our positions for crossing above.Elbow 10 generally requires slope Mouthful, this equipment has cut-out groove integrated function.The offset that cutting torch 904 is first calculated according to skin depth, cutting torch 904 is deflected to The bevel angle of setting.The tube wall of igniting breakdown elbow 10, rotary motion handwheel 103, after rotating a circle, elbow cutting finishes.

The specific engineering method of the assembly cutting of elbow 10 is as follows：

First, by the assembly of elbow 10 on turntable 501, rotational lead screw rotation hand wheel 503 makes leading screw V-block mechanism 502 move It moves and clamps elbow 10.

Second, rotary turnplate 501, turning to needs cutting angle, locating turntable.Pay attention to：When 10 angled mistake of normal bend It when poor, has to be modified when rotating turntable 501, to ensure the angle after cutting for our required angles.

Third is adjusted the height of turntable 501 by turntable height adjuster 507 according to 10 caliber size of elbow, made The axis that elbow 10 need to cut off end face center and the shaft 102 of hand wheel device 1 is tangent.

4th, 904 position of adjustment cutting torch, centering rises and cuts position, needs to adjust 904 angle of cutting torch when groove and cutting line is inclined Shifting amount.

Pay attention to：Cutting line deviation need to calculate according to elbow skin depth and bevel angle, as shown in fig. 7, its calculation formula is such as Under：

L=t*tan (θ)

L:Offset t:Elbow skin depth θ:Bevel angle

In Fig. 7,10a indicates that the part that elbow 10 is cut away, 10b indicate that elbow is retained part, and 904a is vertically to cut The position of cutting torch, 904b indicate the position of cutting torch when groove.

4th, igniting cutting adjusts oxygen flow in one end igniting breakdown elbow tube wall that need to be cut away, cutting torch is moved to It rises and cuts position, rotation positioner is cut.4th, cutting is completed, and clears up port, measures cutting angle size.

Because the elbow after elbow precision of manufacturing process itself and cutting is due to the release of internal stress, certain change will be generated Shape, elbow notch end face are bound to ellipse.In order to reach pipe, elbow assembly precision, there is not mismatch, it is necessary to elbow ends Carry out full circle.

Full circle principle is to add outer pressing roller to be rotated around elbow ends in same axle center using interior top idler wheel, passes through interior top idler wheel Ejection outward, outer pressing roller, which inwardly squeezes, realizes full circle.

As shown in figure 9, elbow port rounding machine include the hand wheel device 1 for being fixed on the left side of pedestal 6, with it is described manually The connected elbow full circle roller devices 2 of rotary wheel device 1, and be arranged on 2 right side of the elbow full circle roller devices, in the ring The right side of shape heating device 3 is equipped with elbow clamping device 4, and the right side of the elbow clamping device 4 is equipped with elbow clamping device 5.

The pedestal 6 is equipped with mobile foundation 7, and the ring shaped heating mechanism 3 is with the elbow clamping device 4 with detachable Mode be connected on the mobile foundation 7.

The hand wheel device 1 includes the riser 101 of two opposition settings, and is connected to two risers 101 Between shaft 102, the medium position of the shaft 102 is fixed with rotation handwheel 103.

In order to adapt to different skin depth elbows, and feed motion is carried out in full circle, the full circle roller devices 2 devise interior Push up idler wheel adjustment mechanism and outer pressing roller adjustment mechanism.

As shown in Figure 9, Figure 10, the interior top idler wheel adjustment mechanism includes the interior of the intermediate strip for being equipped with mounting hole 205 Rolling wheel support 203 is pushed up, has along the both sides of interior top 203 length direction of rolling wheel support in the mounting hole 205 and protrudes outward Two the first flange 203a, two the first flange 203a are equipped with two parallel with the interior top rolling wheel support 203 First through hole, the inside of two first through hole are equipped with the interior top roll wheel assembly 206 being arranged in opposite direction, the interior top Roll wheel assembly 206 includes setting threaded first screw rod 206a across the first through hole and outside, and be rotatably connected on The interior top idler wheel of the described one end of first screw rod 206a far from the mounting hole 205；It is set between two the first flange 203a There are intermediate adjusting nut 204, the other end of the first screw rod 206a to be screwed onto the inside of the adjusting nut 204.

When rotating the adjusting nut 204, two interior top roll wheel assemblies 206 are simultaneously to far from the adjusting nut 204 direction is moved to close to the direction of the adjusting nut 204.

The outer pressing roller adjustment mechanism includes two L-shaped external pressure ler spindle seat boards 202, two external pressure ler spindle seat boards 202 long side be fixedly connected on it is described it is interior top rolling wheel support 203 both sides, the short side of two external pressure ler spindle seat boards 202 with The first flange 203a is at opposition shape；It is equipped with inside in the middle part of the short side of two external pressure ler spindle seat boards 202 and opens up screw thread Second through-hole is equipped with the external pressure roll wheel assembly parallel with 202 long side of external pressure ler spindle seat board inside second through-hole 201；The external pressure roll wheel assembly 201 includes the second screw rod 201a being screwed onto inside second through-hole, and rotation connection In the second screw rod 201a close to the outer pressing roller of described interior top 206 one end of roll wheel assembly, the second screw rod 201a's is another One end is connected with adjustment handwheel 207.

When rotating the adjustment handwheel 207, the external pressure roll wheel assembly 201 is to far from interior 206 side of top roll wheel assembly To or close to interior 206 direction of the top roll wheel assembly movement.

Elbow full circle space is formed between the outer pressing roller and the interior top idler wheel.

As shown in Figure 11 to Figure 15, the present invention internally pushes up in the connection type of rolling wheel support 203 and external pressure ler spindle seat board 202 Further improvement has been done, the machine that is slidably connected is set between the interior top rolling wheel support 203 and the external pressure ler spindle seat board 202 Structure, the mechanism that is slidably connected includes the sliding rail 203b along interior top 203 length direction of the rolling wheel support setting, and is arranged and exists The sliding slot 202b of the sliding rail 203b is accommodated in the long side of the external pressure ler spindle seat board 202；The external pressure ler spindle seat board 202 is in institute The position stated on interior top rolling wheel support 203 can be by the institutional adjustment that is slidably connected.

As shown in Figure 10, the long side of the interior top rolling wheel support 203 and the external pressure ler spindle seat board 202 passes through equidistant Multigroup bolt 208 is fixed.

The spacing of bolt 208 can exist according to different size bend design by adjusting external pressure ler spindle seat board 202 in this way It is interior to push up the position on rolling wheel support 203 to realize the full circle of different size elbow.

It is located at the adjustment handwheel 207 on external pressure roll wheel assembly 201 by rotation, the second screw rod 201a is in outer pressing roller seat board It is rotated between 202 and outer pressing roller and outer pressing roller movement is pushed to move radially idler wheel to realize.

As shown in figure 16, in order to make the movement of outer pressing roller more efficiently, the second screw rod 201a be two sections of diameters and screw pitch not Together, oppositely oriented T-type differential screw arbor, the thinner one section of end the second screw rod 201a, which is screwed onto, is set to external pressure roller end portions In threaded hole；Thicker one section of second screw rod 201a is screwed onto in the second through-hole, and one section of thicker end of the second screw rod, which is connected, adjusts Whole handwheel 207.

As shown in figure 15, the side that external pressure ler spindle seat board 202 is contacted with the interior top idler wheel and the outer pressing roller is equipped with It is oriented to dovetail groove 202c, the interior top idler wheel and the outer pressing roller are equipped in the cunning for being oriented to dovetail groove 202c internal slides Block.During outer nip drum wheel assembly 201 adjusts radial dimension, idler wheel will not rotate, while to ensure to move radially Ensure idler wheel always in the same direction, it can smooth full circle.Top idler wheel is also mounted at the other end of same dovetail groove in same, Idler wheel can also be made to remain same direction.Interior top roll wheel assembly 206 is adjusted using intermediate adjusting nut 204, is passed through Adjusting nut 204 makes the first screw rod 201 of top idler wheel in connection either laterally or medially to realize that different skin depths are curved among rotation The requirement of head full circle.

As shown in Fig. 9, Figure 17, ring shaped heating mechanism 3, elbow clamping device 4 and elbow clamping device 5 are all disposed within movement On pedestal 7.Elbow is clamped with elbow clamping device 4.4 lower clamp ontology 402 of elbow clamping device and 401 phase of fixture base Even, top is fastening snap ring 405, and the one end for fastening snap ring 405 is hinged by hinge 404 and chuck body 402, and the other end is by living Connected nut device 403 is fixedly clamped in chuck body 402.

Elbow ends full circle mainly utilizes plastic deformation.In order to make elbow generate plastic deformation, reply elbow port into Row heating, therefore design one group of ring shaped heating mechanism 3 and elbow is heated.

As shown in figure 18, ring shaped heating mechanism 3 includes annular-heating circle 301 made of being bent by copper tube, heating collar 301 Interior several apertures of sidetracking, 301 air inlet of heating collar design gas mixing cavity 302, air intake valve 304 and oxygen connecting tube 305, acetylene connecting tube 306.When heating, in order not to make full circle roller group by thermal annealing, elbow need to be moved a distance backward, Fire can be closed after heating, and full circle roller group progress full circle then to is pushed elbow by eccentric rod gear 8 rapidly.

The specific engineering method of elbow full circle is as follows：

First, elbow clamping device 5 is retreated into 6 outermost of pedestal with eccentric rod gear 8, elbow assembly is pressed from both sides in elbow It holds on the turntable 501 of device 5, adjusts 501 angle of turntable, make elbow the other end face perpendicular to horizontal plane.It is clamped and is filled with elbow Set 4 clamping elbows.

Second, installation full circle roller devices 2, installation full circle roller devices 2 can be assembled with elbow and are carried out at the same time.(pay attention to： Full circle roller devices 2 need to adjust the angle, and interior top idler wheel can be packed into from the elliptical long axis of elbow.)

Third assembles ring shaped heating mechanism 3, and after adjusting good position, igniting adjusts oxygen size to control heating temperature.

4th, after judging that heating temperature, temperature are up to standard by observation, closes and remove ring shaped heating mechanism 3.

5th, elbow clamping device 5 is pushed into whole circle roller device 2, rotation full circle idler wheel dress with eccentric rod gear 8 Set 2.Notice that rotating handwheel 103 can repeatedly roll within the scope of 180 ° when full circle, when rolling is to a certain degree, feeling resistance becomes Hour increases radial feed immediately, is further continued for rotation hand wheel, until end face of elbow is positive round.

The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any one skilled in the art in the technical scope of present disclosure, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (5)

1. a kind of full circle roller devices for elbow port rounding machine, which is characterized in that including interior top idler wheel adjustment mechanism with And outer pressing roller adjustment mechanism；

The interior top idler wheel adjustment mechanism includes the interior top rolling wheel support (203) of the intermediate strip for being equipped with mounting hole (205), The mounting hole (205) along the both sides of described interior top rolling wheel support (203) length direction have outwardly projecting two it is first convex Edge (203a), it is logical that two first flanges (203a) are equipped with two first parallel with interior top rolling wheel support (203) Hole, the inside of two first through hole are equipped with the interior top roll wheel assembly (206) being arranged in opposite direction, the interior top idler wheel Component (206) includes setting threaded first screw rod (206a) across the first through hole and outside, and be rotatably connected on The interior top idler wheel of the one end of first screw rod (206a) far from the mounting hole (205)；Two first flanges (203a) Between be equipped with intermediate adjusting nut (204), the other end of first screw rod (206a) is screwed onto the adjusting nut (204) It is internal；

The outer pressing roller adjustment mechanism includes two L-shaped external pressure ler spindle seat boards (202), two external pressure ler spindle seat boards (202) long side is fixedly connected on the both sides of the interior top rolling wheel support (203), two external pressure ler spindle seat boards (202) Short side is with first flange (203a) at opposition shape；Inside is equipped in the middle part of the short side of two external pressure ler spindle seat boards (202) The second through-hole of screw thread is opened up, is equipped with inside second through-hole parallel with external pressure ler spindle seat board (202) long side outer Nip drum wheel assembly (201)；The external pressure roll wheel assembly (201) includes the second screw rod being screwed onto inside second through-hole (201a), and it is rotatably connected on outer nip drum of second screw rod (201a) close to described interior top roll wheel assembly (206) one end The other end of wheel, second screw rod (201a) is connected with adjustment handwheel (207)；

The full circle space for accommodating elbow port tube wall is formed between the outer pressing roller and the interior top idler wheel.

2. being used for the full circle roller devices of elbow port rounding machine according to claim 1, which is characterized in that the interior top rolling The mechanism that is slidably connected is set between wheel support (203) and the external pressure ler spindle seat board (202), and the mechanism that is slidably connected includes edge The sliding rail (203b) of interior top rolling wheel support (203) length direction setting, and be arranged in the external pressure ler spindle seat board (202) Long side on accommodate the sliding slot (202b) of the sliding rail (203b)；The external pressure ler spindle seat board (202) is in the interior top idler wheel branch Position on frame (203) can pass through the institutional adjustment that is slidably connected.

3. the full circle roller devices according to claim 1 or claim 2 for elbow port rounding machine, which is characterized in that in described It pushes up rolling wheel support (203) and the long side of the external pressure ler spindle seat board (202) is fixed by multigroup bolt (208) at equal intervals.

4. being used for the full circle roller devices of elbow port rounding machine according to claim 1, which is characterized in that the outer nip drum The side that wheel seat board (202) is contacted with the interior top idler wheel and the outer pressing roller, which is equipped with, is oriented to dovetail groove (202c), described interior It pushes up idler wheel and the outer pressing roller is equipped in the sliding block for being oriented to dovetail groove (202c) internal slide.

5. according to the full circle roller devices for being used for elbow port rounding machine of claim 1 or 4, which is characterized in that described the Two screw rods (201a) are two sections of diameters and screw pitch difference, and oppositely oriented T-type differential screw arbor, second screw rod (201a) is relatively carefully One section of end be screwed onto in the threaded hole for being set to the external pressure roller end portions；Thicker one section of second screw rod (201a) It is screwed onto in second through-hole, one section of thicker end of second screw rod, which is connected, adjusts handwheel (207).