CN1139597A

CN1139597A - Rolling equipment and method for compensator wave shape expansion joint

Info

Publication number: CN1139597A
Application number: CN 95106789
Authority: CN
Inventors: 林德恩; 陈行远; 刘满良; 李印昌; 王章龙
Original assignee: BEIJING KENDEKY CONSTRUCTION ENGINEERING BUILDING MATERIAL Co Ltd
Current assignee: BEIJING KENDEKY CONSTRUCTION ENGINEERING BUILDING MATERIAL Co Ltd
Priority date: 1995-06-30
Filing date: 1995-06-30
Publication date: 1997-01-08

Abstract

The present invention relates to the method and equipment for making corrugated expansion joint which is the main part of the compensator used in gas duct, wind channel or powder coal conduit. The characteristic of said invention features that it adopts multi-stage continuously rolling forming equipment composed of power unit, driving unit, feeder and fixing device and is capable of continuously loading and once through forming. The advantages are no limit on length of the produced corrugated expansion joint and the product being a seamless whole body.

Description

Compensator wave shape expansion joint roll unit and method

The present invention relates to the main body part of bellow expansion joint---the manufacturing of corrugated expansion joint.Bellow expansion joint is mainly used in station boiler cigarette, wind, pulverized coal channel system, the elastic compensating device that expands with heat and contract with cold of pipeline by way of compensation, and bellow expansion joint also can be used for fields such as metallurgy, chemical industry.

It is the stamping technology of manufacturing process that press or stamping press are all adopted in the manufacturing of compensator wave shape expansion joint both at home and abroad at present, as the CE series round rectangle bellow expansion joint of U.S. CE company production and the DD series circle and the square waveform compensator of China.Produce bellow expansion joint, at first need make the corrugated expansion joint of straightway, and then make required various types of products through rolling up working procedure processing such as circle, clod wash, welding, cigarette, wind, pulverized coal channel type and size are various, and mostly are large-scale.Existing stamping manufacture method is to make various moulds according to product needed, then with sheet material corrugated expansion joint by the selected die stamping section of being in line on stamping press, owing to be subject to processing the restriction of machinery and tread flaking mould, the straightway corrugated expansion joint length that is stamped out is no more than 2 meters, the large-scale bellow expansion joint node itself that cigarette, wind, pulverized coal channel are widely applied often has some splicings and butt weld, and CE series product and DD series product all are like this.Produce compensator wave shape expansion joint with stamping technology, equipment investment is huge, and the mould consumption is big, operation inconvenience, manufacturing efficiency is low, the cost height, and the large-scale compensator weld seam of being produced is many, influence the compensation ability of compensator, and influence the leakproofness and the quality of processing of compensator, and the corrugated expansion joint crest can produce stress and concentrate, and the attenuate amount is bigger, easily crack, all there are major defect in its Security and life-span.

The purpose of this invention is to provide the all-in-one-piece compensator wave shape expansion joint of a kind of no weld seam, its length can unrestrictedly freely be extended, and the apparatus and method for of energy progressive forming, with the quality of product and the manufacturing efficiency of raising compensator, and reduces cost.

Main points of the present invention are, the roll unit of compensator wave shape expansion joint and method, be about to produce the corrugated expansion joint of compensator with multistage continuous rolling forming Apparatus and method for, this equipment comprises power section, drive part feeder and fixing device, the motor of power section is positioned at a side at long strip roll unit middle part, through speed reducer, shaft joint connects the driving gear of drive part, fixing device is fixedly arranged in the roll unit fuselage on the ground, it is characterized in that every pair of drive part is gone up lower gear and corresponding pressing mold is an one-level, the straight line level is arranged continuously, the transition gear of the direction that changes between the two-stage, feeder is positioned at the roll unit origin or beginning, and material feeding mouth is close to that leveling is rolled up and down and the charging retaining rolls.The driving gear of drive part and driven gear engagement, and drive interlocks at different levels, transition gear is between the two-stage gear, and each is coaxial to gear and every pair of pressing mold, and last lower press rolls is pressing mold.Be chain-driven between feeder and first order nip drum gear, material feeding mouth is right after leveling and rolls up and down, connects charging location retaining again and rolls, and four steamboats make the material both sides spacing on it.Set raw material length according to product needed, the raw material (carrying material) that width dimensions conforms to are sent into feeder continuously, roll extrusion continuously step by step, corrugated expansion joint is rolled out automatically by the roll unit outlet.

The shape of last lower press rolls changes step by step, and the degree of depth of pressing mold is deepened step by step, and the progression of the high more roll unit of the wave height of the corrugated expansion joint of compacting is many more.

Advantage of the present invention is:

1, the corrugated expansion joint that adopts the rolling forming technology to produce, no matter size is much, itself is a weldless integral body, and the compensator compensates that the assembling back is produced is functional, and the safe and reliable life-span is long;

2, under same offset and normality condition, the compensator that employing integrated type corrugated expansion joint is assembled into is than other forms of compensator structure compactness, and is in light weight, is convenient to mounting arrangements in pipeline, and adaptability is strong, increases substantially manufacturing efficiency, and cost is low.

Brief Description Of Drawings: Fig. 1 is a double wave corrugated expansion joint roller plan view, Fig. 2 is a double wave corrugated expansion joint roller plan view, and Fig. 3 is double wave corrugated expansion joint roller Figure 1A-A sectional drawing, and 1 is motor among the figure, 2 is to wheel, 3 is speed reducer, and 4 is coupling, and 5 is driving gear, 6 is driven gear, 7 is transition gear, and 8 is the transition gear axle, and 9 is last lower press rolls, 10 is the sprocket wheel cover, 11 is chain, and 12 is sprocket wheel, and 13 is to roll in the leveling, 14 is to roll under the leveling, 15 for charging location retaining rolls, and 16 is the roller Equipment Foundations, and 17 is the roller fuselage.

Describe by reference to the accompanying drawings content of the present invention in detail: power section by motor 1, to take turns 2, Reduction box 3 and shaft coupling 4 form, and motor is positioned at middle part one side of microscler roller press, and is electronic Machine drives wheel is slowed down through reduction box, and shaft joint one end connects reduction box, other end connection for transmission Part; Running part is by driving gear 5, driven gear 6, transition gear 7, transition gear Axle 8, nip drum 9 and bearing fixed mount thereof and bearing box form up and down, and driving gear connects connecting shaft Device, and with driven gear engagement, transition gear is between the two-stage gear, nip drum is pressure up and down Mould, nip drums at different levels are coaxial with gears at different levels; Feed arrangement by chain wheel case 10, chain 11, Roll 13 in sprocket wheel 12, the leveling, roll under the leveling 14 and charging location gear roll 15 and form, Be the chain transmission between the gear of feed arrangement and first order nip drum, leveling is rolled up and down and is placed charging aperture, Make the material leveling location of sending into, charging location gear rolls and is positioned at leveling and rolls up and down and first order nip drum Between, there are 4 steamboat both sides spacing on it, make about material and accurately locate; Fixture is by rolling Press Equipment Foundations 16 and roller press fuselage 17 form, and nip drums at different levels and transition gear etc. are equal Be fixed on the microscler fuselage, fuselage is anchored on Equipment Foundations and is flat on the ground. This roller press Nip drum is pressing mold up and down, and upper nip drum is punch, and lower nip drum is die, and the pressing mold shape changes step by step, The degree of depth that is pressing mold is deepened step by step, such as Fig. 2, shown in Figure 3, according to the waveform expansion and contraction of suppressing The wave height of joint is determined roll extrusion progression, and the more high progression of wave height is more many. According to required type of waveform, roll It is all multi-form that press can be designed to single ripple, double wave, three ripples, four ripples etc. The method of rolling forming Be: will send into feed arrangement, warp with the corresponding band raw material of roller press width (such as steel plate) Leveling is rolled up and down in leveling, after charging location gear rolls the location, enters roller press again, because about The effect of nip drum rolling friction power is involved in roller press with raw material, step by step continuously roll extrusion, gradually Be pressed into needed corrugated expansion joint, automatically rolled out by the roller press outlet. Owing to be continuous Rolling forming, the length of corrugated expansion joint is not limit, can be according to the size of required compensator in advance Determine raw-material length, can obtain required corrugated expansion joint after the roll extrusion.

Embodiment:

1, standard overall height type double wave slip joint roller, the corrugated expansion joint wave height of being produced is 150 millimeters, 140 millimeters of the pitch of waves, ripple is wide 50 millimeters, sheet stock thickness is the 2-2.6 millimeter, and this roller is designed to 20 grades, step by step the roll extrusion single forming, produce 12 meters long corrugated expansion joints, used for 18 seconds approximately.

2, standard semi-long type double wave slip joint roller, the corrugated expansion joint wave height of being produced is 75 millimeters, the pitch of waves is 88 millimeters, ripple is wide to be 30 millimeters, sheet stock thickness is the 1-1.5 millimeter, and this roller is designed to 12 grades, step by step the roll extrusion single forming, produce 20 meters long corrugated expansion joints, used for 19 seconds approximately.

Claims

1, the roll unit of compensator wave shape expansion joint and method, promptly adopt multistage continuous rolling forming Apparatus and method for to produce the corrugated expansion joint of compensator, this equipment comprises power section, drive part, feeder and fixing device, the motor of power section is positioned at a side at long strip roll unit middle part, through speed reducer, shaft joint connects the driving gear of drive part, fixing device is fixedly arranged in the roll unit fuselage on the ground, it is characterized in that every pair of drive part is gone up lower gear and corresponding pressing mold is an one-level, the straight line level is arranged continuously, the transition gear of the direction that changes between the two-stage, feeder is positioned at the roll unit origin or beginning, and material feeding mouth is close to that leveling is rolled up and down and the charging retaining rolls.

2, according to the described roll unit of claim 1, it is characterized in that the driving gear and the driven gear engagement of drive part, and drive interlocks at different levels, transition gear is between the two-stage gear, and each is coaxial to gear and every pair of pressing mold, and last lower press rolls is pressing mold.

3, according to the described roll unit of claim 1, it is characterized in that being chain-driven between feeder and first order nip drum gear, material feeding mouth is right after leveling and rolls up and down, connects charging location retaining again and rolls, and four steamboats make the material both sides spacing on it.

4, according to the described rolling depression method of claim 1, it is characterized in that setting raw material length according to product needed, the raw material (carrying material) that width dimensions conforms to are sent into feeder continuously, roll extrusion continuously step by step, corrugated expansion joint is rolled out automatically by the roll unit outlet.

5, according to the described roll unit of claim 1, it is characterized in that the shape of lower press rolls changes step by step, the degree of depth of pressing mold is deepened step by step, and the wave height of the corrugated expansion joint of compacting is high more, and the progression of roll unit is many more.