Adjustable clearance guide rail of pre stressed stand in large scale forging pump press
Affiliated technical field
The present invention relates to a kind of adjustable clearance guide rail of pre stressed stand in large scale forging pump press, it is the manufacturing technology of making large-sized forging hydraulic press prestressed stand, the hydraulic press for free forging that is particularly useful for large-scale high-precision belongs to large-sized forging hydraulic press manufacturing technology field.
Background technology
At present, what known hydraulic press for free forging column was adopted is the cylinder guidance mode, bear the live load of hydraulic press, moved cross beam carries out upper and lower motion at the outer surface of cylinder by the guide pin bushing guiding that spherical bearing supports, the forging that is between upper and lower mould is deformed, thereby finish Forging Technology.Column carries out prestressing force with entablature and sill respectively by inside and outside nut and is connected, and is not have prestressedly and be in column between the upper and lower crossbeam, and this part accounts for 2/3 of whole parts of the force length; And the pillar segment between upper and lower crossbeam also has moved cross beam, be subjected to the effect of forging process eccentric moment, make that the column stressing conditions of this part is very complicated, existing axial tensile force, the bending moment effect is arranged again, above load is the alternation circulation, and the dependability and the life-span of column reduce greatly, and the column fracture accident repeatedly takes place; Columniform column one guide pin bushing guiding mechanism can't be adjusted the guiding clearance accurately, easily, especially hydraulic forging press is worked under hot state, the thermal deformation of member is big, gap under the hot and cold state can't be coordinated, can only amplify the gap, cause the hydraulic press precise decreasing, the forging ' s block dimension and the form accuracy of production are low, surplus is big, has caused the huge waste of a plurality of links such as raw material, heat treatment, machining.
Summary of the invention
In order to overcome above-mentioned technical deficiency, the invention provides a kind of adjustable clearance guide rail of pre stressed stand in large scale forging pump press, this adjustable clearance guide rail of pre stressed stand in large scale forging pump press can not only improve the ability of integrally-built reliability and anti-eccentric moment, and save the forging raw material, heat treatment, mechanical process capacity are improved greatly.
The technical solution adopted for the present invention to solve the technical problems is: it is made up of turnbuckle, nut one, entablature, moved cross beam, column, sill, bolt, nut two, adjustment pad, wedge slide, wheel chock plate set bolt, wheel chock plate, slide plate, column is made square, slide plate is fastened on the column by screw, turnbuckle by nut with entablature and sill pretension on column, column is fixed between entablature and the sill; Moved cross beam is enclosed within the sled surface on the column, and the surperficial upper and lower wheel chock plate that all is equipped with of pressing close to slide plate of moved cross beam is fixed by wheel chock plate set bolt; Upper and lower facade boring, the tapping of pressing close to slide plate of moved cross beam are screwed into bolt, wedge slide inserts between wheel chock plate, the slide plate, borehole jack on the wedge slide short side part is on bolt, adjust pad and be enclosed within on the bolt and between the hole on moved cross beam facade, wedge slide top, fastening by nut two; Turnbuckle passes through nut one pretension by nut with entablature and sill, and column produces compression between entablature and sill, and turnbuckle produces tension; Adjust the nut on the bolt, wedge slide is made perpendicular type, and minor face is perpendicular to long limit, the minor face planar section is drilled with circular hole, wedge slide is adjusted the relative position between wedge slide and wheel chock plate and the slide plate, the thickness of fixed adjusting pad sheet along wheel chock plate trim locations up and down; When hydraulic press is worked, the pulling force that turnbuckle is subjected to continues to increase, and the pressure of column reduces, because the numerical value that the compression that the pretension compression produced when being greater than work reduces, therefore, between column and entablature and sill, can not produce the gap, guarantee the globality of frame, the rigidity of frame is guaranteed, and the precision of hydraulic press improves; Under normal temperature and heating status, respectively nut is unclamped, make wedge slide along wheel chock plate trim locations up and down, reach predetermined gap after, adjust the thickness of shim pack, on bolt, the gap just can guarantee the numerical value be scheduled to nut screwing clamping.
The invention has the beneficial effects as follows: turnbuckle is that prestressing force connects on the total length of workspace, and what bear is the pulsation circulation tension of little stress amplitude, and anti-fatigue ability increases substantially; The column of anti-bias load bending makes turnbuckle stressed simple, improves the ability of integrally-built reliability and anti-eccentric moment, and reliability, service life improve greatly; The adjustable clearance guide rail, lead at square column outer surface, adjusting play very easily under hot and cold state, the hydraulic press running precision is increased substantially, forging ' s block dimension and form accuracy height, surplus is little, saves production cost in a plurality of links such as raw material, heat treatment, machinings, improves forging output.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a large-sized forging hydraulic press prestressed stand structure chart of the present invention.
Fig. 2 is an adjustable clearance guide rail of pre stressed stand in large scale forging pump press structure chart of the present invention.
Fig. 3 is the local amplification assumption diagram of adjustable clearance guide rail of pre stressed stand in large scale forging pump press of the present invention.
Among the figure: 1, turnbuckle, 2, nut one, 3, entablature, 4, moved cross beam, 5, column, 6, sill, 7, bolt, 8, nut two, 9, adjust pad, 10, the wheel chock plate, 11, wheel chock plate set bolt, 12, wedge slide, 13, slide plate.
The specific embodiment
In Fig. 1-embodiment illustrated in fig. 3, column (5) is made square, slide plate (13) is fastened on the column (5) by screw, turnbuckle (1) by nut one (2) with entablature (3) and sill (6) pretension on column (5), column (5) is fixed between entablature (3) and the sill (6); Moved cross beam (4) is enclosed within slide plate (13) surface on the column (5), and the surperficial upper and lower wheel chock plate (10) that all is equipped with of pressing close to slide plate (13) of moved cross beam (4) is fixing by wheel chock plate set bolt (11); Upper and lower facade boring, the tapping of pressing close to slide plate (13) of moved cross beam (4) are screwed into bolt (7), wedge slide (12) inserts between wheel chock plate (10), the slide plate (13), the borehole jack on wedge slide (12) top is on bolt (7), adjustment pad (9) is enclosed within on the bolt (7) and is positioned between the hole on moved cross beam (4) facade, wedge slide (12) top, and is fastening by nut two (8).