CN2734770Y

CN2734770Y - Bearing supported labyrinth type waterproof long-tri-roller aligning quenching machine tool

Info

Publication number: CN2734770Y
Application number: CN 200420039345
Authority: CN
Inventors: 武茂灿
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-29
Filing date: 2004-03-29
Publication date: 2005-10-19
Anticipated expiration: 2014-03-29

Abstract

The utility model discloses a bearing supported labyrinth type waterproof long-tri-roller aligning quenching machine tool which can carry out aligning and quenching treatment simultaneously to a carbon steel and low-alloy steel pipe with a length of 2. 5m and a diameter phi of 250mm, comprising a base (1), a supporting frame (2), lower rollers (3), an upper roller (4), a slide block (5), an oil cylinder (6) and spray pipes (7). When a heated workpiece enters the two lower rolls (3), the oil cylinder (6) drives the upper roll (4) through the slide block (5) to depress, and the two lower rollers (3) are driven by a gearbox which is directly connected with a motor to rotate. The workpiece and the upper roll (4) are driven to rotate. When the workpiece is pre-rolled under a certain pressure for a certain time, three spray pipes (7) sprays water towards the workpiece for quenching, in order to realize aligning and quenching process being carried out simultaneously. After treatment, the straightness of the full length of the workpiece is smaller than 0. 5mm. The utility model is provided with an integrally cast brass shaft sleeve with a flange which is serve as a sliding bearing, and is provided with a labyrinth type waterproof mechanism, so the carrying capacity is large and the operation is safe. The bearing supported labyrinth type waterproof long-tri-roller aligning quenching machine tool can be matched with a lengthened ordinary box type electric furnace; the equipment investment is less and the operation is easy. The bearing supported labyrinth type waterproof long-tri-roller aligning quenching machine tool is both suitable to be used in small lot production and automatic production line.

Description

The long three roller alignment quenching machines of sleeve supporting labyrinth waterproof

One, technical field:

The utility model is the specific equipment that elongated tubular, axle is carried out simultaneously alignment and quench treatment, the long three roller alignment quenching machines of specifically a kind of sleeve supporting labyrinth waterproof.

Two, background technology:

At present, the colliery is adopted three roller alignment quenching machines with the post alive of hydraulic prop (DZ type) and the thermal treatment of oil cylinder more.But the treatable Workpiece length of lathe only is 1-1.4m, can not handle post alive and the oil cylinder of the 1.5-2.5m of the newly designed new type mining hydraulic prop of China Mining University (DWX type); In addition, most three-roll unbender beds use rolling bearing, and its supporting capacity is limited, can quicken the wearing and tearing of bearing when waterproof measure is unfavorable; Moreover three present roller alignment quenching machines are that three roller diameters are identical, and what in fact mainly transmit power is top roll, and two lower roll list rollers are stressed more much smaller than top roll.Up-down rollers should be selected for use different diameters to meet requirement of strength and give full play to the potentiality of material.

Three, summary of the invention:

For overcoming above-mentioned shortcoming, the utility model for elongated tubular, the axle thermal treatment provide a kind of can be to long 2.5m, carbon steel that diameter phi 250mm is following and low alloy steel, axle part carry out alignment simultaneously and quench, handle the back linearity less than 0.5mm, the long three roller alignment quenching machines of novel shaft sleeve supporting labyrinth waterproof that proof strength requires.

The utility model mainly is made up of base, support, lower roll, top roll, slide block, oil cylinder, water jet standpipe.The new technology that is adopted has 4 points:

The one, select lengthening for use, different diameter, material is a roll stell (50CrMnMo) and through heat treated top roll and lower roll.The roller useful length is 2.5m, can handle the long pipe of 2.5m, axle part.This type of lathe top roll is stressed big, and two lower roll list rollers are stressed little, and roller diameter is big on the utility model, is Φ 240mm, and following roller diameter is little, is Φ 200mm, and both proof strength requirements again can economical with materials.After the footpath thermal treatment of three rollers, have high intensity, wear resistance and thermal fatigue resistance.Three rollers of the present utility model have rational in infrastructure, intensity height, characteristics such as life-span length.

The 2nd, select the sliding surface bearing of the monoblock casting brass axle sleeve on band shelves limit for use as roller, compare with rolling bearing, be more suitable for rotating speed low (40 rev/mins), the operation characteristic that load is big makes the utility model supporting capacity bigger, move more steady, longer service life.

The 3rd, add a labyrinth type proof mechanism of water in the sliding surface bearing inboard, spray water with high pressure when preventing to quench and scurry into the bearing place along roller, guarantee the works better of bearing, improve work-ing life.

The 4th, the heating installation of workpiece is selected the common cabinet-type electric furnace of lengthening for use, joins a simple and easy platform in the stokehold, a platform and difference of altitude is arranged above the lathe lower roll.Heated parts is at first moved on the platform in stove, utilizes gravity then, allows workpiece roll into voluntarily between two lower rolls of lathe.The utility model can be supporting with existing installation, and utility appliance is few, and is simple to operate, respond well.

Four, description of drawings:

Fig. 1 is a structural representation of the present utility model, comprises front view and left view.

Fig. 2 is band rib monoblock casting copper bush and labyrinth type proof mechanism of water synoptic diagram.

Fig. 3 is entered lathe for workpiece by electric furnace principle schematic.

Five, embodiment:

Structure of the present utility model is seen Fig. 1.Mainly by base (1), support (2), lower roll (3), top roll (4), slide block (5), oil cylinder (6), water jet standpipe (7), etc. form.Two lower rolls (3) are supported by two supports (2).Motor direct connection wheel box (10) rotates in the same way through gear driven two lower rolls (3), and top roll (4) two ends are by slide block (5) supporting, and slide block (5) can slide up and down in support (2) guide rail.The piston rod of oil cylinder (6) and slide block (5) link, and can drive slide block (5) and slide up and down, and move up and down thereby drive top roll (4).Top roll (4) is mentioned before the work beginning, after hot heated work pieces enters between two lower rolls (3), the operator presses button, top roll (4) descends and pushes down workpiece, this moment, workpiece rotated under lower roll (3) drives, and top roll (4) also rotates under workpiece drives, and workpiece adds between three rollers depresses rolling, both reached alignment in advance, and made workpiece temperature more become even again.After reaching setting-up time, spray water to workpiece simultaneously from three directions by three water jet standpipes (7) of water solenoid valve control, in rolling, both finished quenching process, finish alignment process again, roll time and water spraying time in advance and control by 2 JS11-21 time relays.After whole process was finished, top roll (4) was mentioned automatically, waited for that next part enters.

The utility model cast brass axle sleeve (8) and labyrinth type proof mechanism of water (9) are seen Fig. 2.Three roll shaft ends are equipped with the band rib monoblock casting brass axle sleeve (8) as sliding surface bearing, and labyrinth type proof mechanism of water (9) is equipped with in the axle sleeve inboard.Labyrinth type proof mechanism of water (9) is divided into fixed part and rotates partly.Fixed part is contained on the support (2), rotates partly to be positioned on the roller, rotates with roller.Rotate partly and between roller O-ring seals (14) is housed, thereby stop fully along the axle surface and scurry water to the bearing end, peripheral water spray also can reach ideal effect through labyrinth structure, thereby guarantees that the bearing place does not have water intrusion, improves operating mass and work-ing life.

The connection relation of the utility model and process furnace is seen Fig. 3.Process furnace (12) is placed on the preceding platform (11) of fire door for extending common cabinet-type electric furnace, workpiece (13) after the stove internal heating meets processing requirement, pulling out earlier.Above platform (11) and the lathe lower roll (3) height difference H is arranged, utilize this height difference H, workpiece (13) can roll between two lower rolls (3) voluntarily.Actually operating confirms, because workpiece (13) has certain kinetic energy, adds the rotation induced effect of lower roll (3) again, can eject the former workpiece that is between lower roll (3) automatically after workpiece (13) enters between two lower rolls (3).Sometimes also can be in stalemate, at this moment, just can eject former workpiece as long as one push away gently with the hook of coming out of the stove.Red heat workpiece (13) carries out the alignment quenching process after entering lower roll (3).

The utility model aims at small serial production design, and facility investment is few, simple to operate, treatment effect is good, solved elongated tubular, the quenching strain problem of axle part.If the use continuous furnace is equipped with charging and discharging mechanism and automatically controlled program, the utility model can be used for automatic production line fully.

The utility model has good effect to elongated tubular, the alignment of axle part, quenching, and except spray quenching under roll extrusion, external force stops outside the factor of workpiece deformation, also has 3 effects that meet the thermal treatment rule.The one, hot alignment had both been played in pre-roll extrusion under the red heat state, played again and gave cold and the samming effect; The 2nd, workpiece in rotation from three direction spray quenchings.Work-piece cools is even; These 2 generations that can both reduce thermal stresses and structural stress in the quenching process can reduce quenching strain.The 3rd, under roll extrusion, can discharge the internal stress that has produced, this makes workpiece not only have good effect after quenching, and behind high tempering, still can keep the original state that obtains.

Claims

1, a kind of by base (1), support (2), lower roll (3), top roll (4), slide block (5), the long three roller alignment quenching machines of the sleeve supporting labyrinth waterproof that oil cylinder (6), water jet standpipe (7) are formed is characterized in that the useful length of three rollers is long, reach 2.5m, up-down rollers diameter difference, top roll (4) is φ 240mm, lower roll (3) is Φ 200mm, three roll shaft ends support and are equipped with labyrinth type proof mechanism of water (9) by axle sleeve (8), workpiece is heating in the common cabinet-type electric furnace of lengthening (12), and stokehold platform (11) has a height difference H with lower roll, and heated parts (13) can roll between two lower rolls of lathe from stokehold platform (11) voluntarily.

2, according to the long three roller alignment quenching machines of the said sleeve supporting of claim 1 labyrinth waterproof, it is characterized in that said sleeve supporting, the labyrinth proof mechanism of water is to use the monoblock casting brass axle sleeve (8) of band rib as the roller slip bearing at three roller axle ends, labyrinth type proof mechanism of water (9) is equipped with in the axle sleeve inboard, proof mechanism of water is divided into fixed part and rotates partly, fixed part is contained on the support (2), rotate partly and be positioned on the roller, and, rotate partly and between roller O RunddichtringO (14) is housed with rotation of roller.

3, according to the long three roller alignment quenching machines of the said sleeve supporting of claim 1 labyrinth waterproof, the fire door that it is characterized in that the common cabinet-type electric furnace of said lengthening (12) is equipped with platform (11), platform (11) with above the lathe lower roll (3) height difference H is arranged, the workpiece that heats can roll between two lower rolls of lathe from platform (11) voluntarily, and the former workpiece of handling well is ejected.