CN201214593Y

CN201214593Y - Universal guide rope sheave

Info

Publication number: CN201214593Y
Application number: CNU2008200527096U
Authority: CN
Inventors: 胡新民
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-01
Filing date: 2008-04-01
Publication date: 2009-04-01
Anticipated expiration: 2018-04-01

Abstract

The utility model relates to an universal rope guide pulley, which comprises a pulley (1), a turntable (2), a pulley frame (3), a convex block (4), a rope hole (5), a pin shaft (6), a bearing seat (7), and an opening-closing rope (8). The pulley (1) and the bearing seat (7) are both filled with rolling bearings. The deflection force of the opening-closing rope (8) in any direction can turn and adjust the direction of the turntable (2), so that the rope groove of the pulley (1) operates right oppositing to the opening-closing rope (8) all the time. The gap of the convex block (4) and the rope groove of the pulley (1) have the identical width to form a flat circular rope hole (5). Therefore, the V-shaped dead angle between two pulleys is eliminated; the destructive wear is prevented; and the service life of the opening-closing rope (8) and the universal rope guide pulley is prolonged.

Description

Universal sheave

One, technical field: the utility model belongs to the crane grab field.

Two, background technology: grab bucket opens and closes in the operation process, and opening and closing rope must up-and-down movement.Because of grab bucket operation under in any direction the heeling condition always, open and close the also deck beam of wearing and tearing grab bucket in any direction steel structure of rope, for preventing to open and close rope and the mutual severe wear of grab bucket deck beam steel structure, must establish guide rope device and be overcome.Guide rope device has " well " font, " ten " font, " II " font, broadening formation, but, technology safeguards because limiting to and be difficult to, all can not thoroughly stop wearing and tearing, what have has quickened wearing and tearing each other on the contrary behind et out of order, and the wearing and tearing that especially open and close rope are still very serious.

The anti-wear joint rope device of China Patent No. 99233868.9 grab buckets is to solve up-to-date technology of these wearing and tearing, but still exists following defective to improve.

1, it is characterized in that the combination technique of multiple structure, indivisible, can not implement separately.Structure is that universal abrasionproof pulley, open type wedge, elasticity protect rope sling, four unifications of through beam balance hinge, so manufacturing cost is big, and inconvenience is implemented, and back two technology are superseded, not have the value of enforcement.

2, to connect be 2 somes contact butt joints of two circles for two pulley rims, there are not two side directions of grooving to form two bigger " V " shape mouths (seeing the top of Fig. 2 pulley dotted line), it is ever-changing to open and close rope deflection direction, probability toward the interior operation of interior and past " V " shape mouth of pulley " U " shape grooving equates that opening and closing restricts still has " V " shape mouth and the mutual destruction wearing and tearing that can clamp-on two pulley joint portions.There is the universal abrasionproof pulley of a small part that therefore the damage phenomenon had once taken place.Entangling its reason is, though connecting, two pulley rims constitute an oblate rope hole, but this oblate rope hole only is the sectional position on the line of centers contact point of two pulleys, not at the key role of the upper plane of two pulleys, not that is to say and stir on the beginning point of action of pulley in switching rope deflection, the pulley yoke top of clamping two pulleys and pulley top be used on the rotating disk with high, but it is far away with pulley rim grooving inner face, under the situation that projection is not set, bow from the pulley yoke upper plane and to see and do not constitute a flat round hole, be the quincunx hole of scattering of fitfull on the contrary, open and close the long-term contact of rope, stir wheel rim wheel rim easy to wear, make flat round hole become elliptical aperture, cause whole failure of apparatus.Open and close rope software feature is arranged, if in initial deflection is not to bend towards pulley " U " shape grooving but when bending towards " V " shape mouth of two pulleys butt joint, be on the line of centers of rotating disk, can't stir the rotating disk automatic direction regulating, rely on the equilibrium activity of bearing block bearing, opening and closing wrong " V " shape mouth of rope meeting wherein moves when rope race is stable, just in time be absorbed in " V " shape mouth and produce violent cliding friction, at this moment not that rope race with the switching rope friction of rolling takes place, but cliding friction takes place with the switching rope in two pulley rims simultaneously, and it is damaged mutually.

Three, summary of the invention: the utility model purpose be at above-mentioned defective a kind of divisible, independent use be provided, convenient implement, with low cost and thoroughly eliminate cliding friction, the more excellent universal sheave of abrasionproof effect.

The utility model is realized above-mentioned purpose by following technical method.

1, this universal sheave comprises pulley, rotating disk, pulley yoke, projection, rope hole, bearing seat.Can be used as a kind of accessory of crane grab, can be assemblied in grab bucket separately and opening and closing rope and go up and use, must not protect rope sling, the through beam balance hinge is used with open type wedge, elasticity.

2, two pulley rims connect to seal and constitute an oblate rope hole, and long and wide ratio is two-to-one, and its projection of shape resembles two " U " word closed and butted." V " shape mouth defective that its top (Fig. 1 dotted line) forms is filled up elimination with the projection on the pulley yoke, projection can coincide with " V " shape mouth geometric space that two pulley rims form, embed in " V " shape mouth, just in time concordant with the rope race inner face, " V " shape mouth defective disappears, pulley top grooving and wheel rim and projection constitute an oblate rope hole, have only flat round hole just can make sheave realize universal function, universal function then can not be realized in circular hole or other holes, its reason is group not change iron hoop in annulus just just as stir with a reinforcing bar an oblate iron hoop that keeps flat or the positive round iron ring.Software feature more than the switching rope reinforcing bar, can be crooked or soft in sheave, therefore it all is oblate more needing rope hole horizontal cross section, top, universal sheave center, the oblateness rope hole function at top is very outstanding, no matter the switching rope be soft, tighten, curved straight, polarization, can both cooperate the conductor rope effect of bringing into play accurately with it.Projection and pulley yoke or weldering or casting constitute one, firm and durable, and projection can be circle, prismatic or other shapes.

3, projection has an outstanding effect, is will stir rotating disk to adjust the conductor rope direction if open and close the initial deflecting force of rope, and that necessarily at first is to finish by stirring projection.Projection bears the power of mainly stirring, and has so just avoided the wearing and tearing pulley rim.Projection is very little with the mutual wearing and tearing that open and close rope, effect lower rotary table at the bearing seat antifriction-bearing box is quite flexible, rotating disk can chance power rock when the switching rope had deflecting force, opening and closing rope can skid on projection, be partial to any side immediately and fall into grooving, the time compole that stops on projection was short, less than 0.1 second, mutually the wearing and tearing that produce can be little to ignoring, do again that rolling body there is no need or unnecessary at bump position.

The universal sheave of the utility model, comprise pulley, rotating disk, bearing seat, pulley yoke, projection, rope hole, bearing pin are arranged on the rotating disk, antifriction-bearing box all is housed in pulley and the bearing seat, is installed with in the rope hole and opens and closes rope, in the pulley yoke of pulley by bearing pin and rotating disk, pack on the bearing in the bearing seat and be fastening in rotating disk bottom, it is characterized in that the pulley yoke inside top is provided with projection, constitute oblate rope hole with two pulleys, rotating disk is contained on the bearing block bearing inner ring also fastening.

The utility model is compared with prior art, and variation has taken place for technology and structure, and universal sheave can become the device of independent use, implement easier, cost is lower, wear proof effect is better.Increase projection on pulley yoke top, embed between the two pulley wheel sources, fill up the defective of having eliminated " V " shape mouth, projection and rope race constitute a flat round hole.Because the inclined to one side power effect of balance of rotating disk, bearing block bearing, when opening and closing rope initial deflection pulley yoke and the motion of projection direction, the time that need only extremely lack slides at the projection place, just slides into operation in the rope race rapidly, and is perfectly safe.Thereby thoroughly stopped to open and close the mutual severe wear of rope and grab bucket deck beam steel structure and guide rope device, prolonged the service life that opens and closes rope and universal sheave more.

Four, description of drawings: accompanying drawing is represented the concrete structure of the universal sheave of the utility model.

Fig. 1 is the birds-eye view of universal sheave;

Fig. 2 is the front elevation of universal sheave;

Fig. 3 is that universal sheave rotating disk revolves the front elevation after turning 90 degrees;

Fig. 4 for universal sheave rotating disk just, three-view diagram cuts open, bows;

Five, the specific embodiment: the detail that describes the utility model embodiment below in conjunction with accompanying drawing in detail:

The universal sheave of the utility model, comprise pulley (1), rotating disk (2), bearing seat (7), open and close rope (8) composition, pulley yoke (3), projection (4), rope hole (5), bearing pin (6) are arranged on the rotating disk (2), in pulley (1) and the bearing seat (7) antifriction-bearing box is housed all.Be installed with in rope hole (5) and open and close rope (8), in the pulley yoke (3) of pulley (1) by bearing pin (6) and rotating disk (2), pack in the bearing inner ring of bearing seat (2) and be fastening in rotating disk (2) bottom.Rotating disk (2) is because the effect of bearing is quite flexible, and the deflecting force of any direction of switching rope (8) can be stirred and make its rotation, makes the grooving direction of pulley (1) face switching rope (8), opens and closes restrict (8) and slips into normally operation in pulley (1) grooving fast.The grooving of the space length between two projections (4) and pulley (1) is with wide and concordant with wheel rim, and both constitute the oblate type rope of an osed top hole (5) mutually.Projection (4) can be round or geometric type, can be welded in pulley yoke (3) and go up or cast setting, stop that opening and closing rope (8) enters " V " shape mouth dead angle operation between two pulleys (1), helping to open and close rope (8) slips in pulley (1) grooving, avoid grueling wear, thereby prolong the service life of steel rope (8) and universal sheave more, save production cost and maintenance load.

Claims

1, the universal sheave of the utility model, comprise pulley (1), rotating disk (2), bearing seat (7), pulley yoke (3), projection (4), rope hole (5), bearing pin (6) are arranged on the rotating disk (2), in pulley (1) and the bearing seat (7) antifriction-bearing box is housed all, be installed with in the rope hole (5) and open and close rope (8), in the pulley yoke (3) of pulley (1) by bearing pin (6) and rotating disk (2), pack on the bearing in the bearing seat (2) and be fastening in rotating disk (2) bottom, it is characterized in that pulley yoke (3) inside top is provided with projection (4), constitute oblate rope hole (5) with two pulleys (1).

2, universal sheave according to claim 1, it is also fastening to it is characterized in that rotating disk (2) is contained on bearing seat (7) bearing inner ring.