CN2487693Y - Three-jaw external pressure rotary material cap - Google Patents

Abstract

The utility model relates to an improved material cap for cylindrical transporting carriage, which is manly characterized in that: three pressure claws are evenly arranged on the tank surface of the outer annulus of a feed opening circle; the pressing of the pressure claws on a material cover body is rotary and just internal pressure is changed into external pressure; the lever action imposes a great pressing force on the material cover on which a four-rod elevating gear is arranged simultaneously; and with the elasticity of secondary spring on the four-rod elevating gear, the opening, raising, slewing and closing of the material cover are all lowering and safe, thereby not only preventing the pressing mechanism from being eroded by powdery materials and having a long service life, but also increasing the working pressure in the tank and lowering the residual rate of bulk materials in the tank.

Description

The rotary material lid of three-jaw external pressure

The utility model is a kind of improved material lid that is used for closed jar of shape transport trolley.

The material lid that is used for now on closed jar of shape transport trolley such as bulk cement car is 4 inner pressed material lids, its hold-down mechanism is a screw, owing to be subjected to the restriction of inner space, acting force arm is short, the opening and closing of material lid are extremely required great effort, effect is low, four point locations compress and occur asynchrony phenomenon easily, in addition, after hold-down mechanism is subjected to the long-time erosion of jar interior granular material, occur easily not pressing tightly and stuck phenomenon, work life is low, operation pressure need be controlled at below the 0.2MPa in jar, causes jar interior discharge rate slow, material surplus ratio height.

The purpose of this utility model is the rotary material lid of a kind of three-jaw external pressure of design, it is convenient that the material lid is opened, compress free and relaxed, avoid phenomenon such as asynchronous and stuck, prolonging material covers service life, and increase a jar interior operation pressure, reduce the surplus ratio of material, thereby improve the effect of transporting of closed jar of shape transport trolley.

The purpose of this utility model is achieved like this: three paw uniform installations on the tank surface of material mouthful circle periphery, be screw to expecting that lid compresses, just become inner pressed and be external-compression type, and leverage can produce very big thrust to the material lid, this external material covers equipped four connecting rod lift systems, four-bar linkage is equipped with the gravity of the elastic force counteracting material lid of assist spring, can make the opening and closing of material lid very laborsaving, antifriction-bearing box also is housed with the revolution of support material lid on the four-bar linkage, so both avoided the erosion of granular material to hold-down mechanism, do not have and not press tightly and phenomenon such as stuck, good airproof performance makes material cover again and is opening, revolution, close, laborsaving safety in the process that compresses plays and increases the service life, increase a jar interior operation pressure, reduce the purpose of the surplus ratio of bulk material.

It is simple in structure that the utility model is carried the rotary material lid of three-jaw external pressure, flexible operation, and long service life, it is fool proof reliable to work.

Now in conjunction with the accompanying drawings the utility model being carried the rotary material lid of three-jaw external pressure is further described:

Fig. 1 is the scheme drawing that the utility model is carried the rotary material lid of three-jaw external pressure.

Fig. 2 is the schematic top plan view that the utility model is carried the rotary material lid of three-jaw external pressure.

Fig. 3 is the scheme drawing that the utility model is proposed the material lid unlatching of the rotary material lid of three-jaw external pressure.

Fig. 4 is unlatching of material lid and the postrotational attached scheme drawing of looking that the utility model is carried the rotary material lid of three-jaw external pressure.

From Fig. 1, Fig. 2, Fig. 3, among Fig. 4 as can be seen, the rotary material lid of three-jaw external pressure is mainly by material lid 1, center leading screw 9, screw set 7, jaw wrench 6, auxiliary catch 5 compositions such as grade, be primarily characterized in that three paws 22 are uniform on expecting mouthful outside face that encloses the ladle bowl 4 outside 2 circumference, each paw 22 is contained on the pawl seat 20 by bearing pin 21 and can freely overturns, pawl seat 20 is welded on tank body shell 4, gear piece 28 is also established at the rear portion of paw 22, avoid when making paw 22 upsets clashing into mutually with tank body shell 4 or material lid 1, the two sections of center leading screw 9 are reverse thread, hypomere is screwed in the screw set 7, epimere is equipped with three-jaw compact heap 8, on the axle journal of upper end with latch 11 by having adorned jaw wrench 6, also be provided with oil duct 10 and zerk on the center leading screw 9, be convenient to lubricated screw thread, reduced the frictional resistance of three-jaw compact heap 8 and promoted and depressed very laborsaving, two the short radius stay 13 in a left side and the right long radius stays 23 of 120 ° of angles have each other also been adorned on the upper surface of material lid 1, short radius stay 13 in a left side and right long radius stay 23 must be stuck in the inboard of any adjacent two pawls of three-jaw compact heap 8, when material lid 1 when closing to prevent the loosening of three-jaw compact heap 8, on the outside face of the tank body shell 4 of the circumference left-external side of this external material mouth circle 2, installed one by upper flat plate 15, two blocks of epipleurals 19, two lower side panels 29, four connecting rods 30, four four-bar linkages that pitman shaft 24 grades are formed, wherein two lower side panels 29 are welded on the outside face of tank body shell 4, on two pitman shafts 24 of bottom assist spring 25 is housed, the elastic force of assist spring 25 is suitable with the deadweight of material lid 1,1 one thrusts that make progress of feed lid and make its lifting, the bearing sleeve 17 of perforate mounting strap antifriction-bearing box 18 in the middle of the upper flat plate 15, a Z-shaped plate 14 has been installed in the left side of material lid 1 upper surface, the upper left plate of this Z-shaped plate 14 is contained on the upper flat plate 15 with pivot pin 16 and can freely turn round by the support of antifriction-bearing box 18, so, material lid 1 lifting back also is subjected to the support of antifriction-bearing box 18 and freely turns round under hand propelled, have position-limited trough 26 on the left neighboring of the upper left plate of this external Z-shaped plate 14, on the outer facade of the outer epipleural 19 of four-bar linkage, turnover limiting stopper 27 is housed, limiting stopper 27 is snapped in the position-limited trough 26 to prevent to expect the automatic revolution of lid 1, when opening material lid 1, at first auxiliary catch 5 is thrown off, grasp jaw wrench 6 drive center leading screws 9 then and make left-hand revolution, when center leading screw 9 rotates rising, its epimere screw thread drives three-jaw compact heap 8 again and rises, because the hypomere screw thread can not rotate and can only rise for left-hand thread and three-jaw compact heap 8 each other are subjected to right placing restrictions on of long radius stay 23 on the center leading screw 9, just promptly three paws 22 is unclamped, be raised to when three-jaw compact heap 8 and just can arbitrarily rotate to an angle behind the height that surpasses right long radius stay 23 and disengage simultaneously with three paws 23, break away from material lid 1 with 22 upsets of three paws this moment respectively, and under the effect of assist spring 25, four connecting rods 30 become upright shape, 1 one thrusts that make progress of feed lid, material lid 1 is breakdown very effortlessly just, will expect that then lid 1 rotates counterclockwise certain angle when position-limited trough 26 is aimed at limiting stoppers 27, and limiting stopper 27 and snap in and just can prevent from the position-limited trough 26 to expect that lid 1 automatic rotation closes upwards overturns, guarantee to feed and personnel from the material mouthful the circle 2 the turnover a safety, to close material during lid 1 when operation finishes, position-limited troughs 26 be thrown off in limiting stopper 27 upset downwards, the top of will material lid 1 cw changeing feedback outlet circle 2 with hand, a little firmly makes the gravitational moment of material lid 1 be slightly larger than the moment shell of assist spring 25, just can cover material lid 1 like a cork, the paw 22 that overturns then covers on material lid 1, rotates three-jaw compact heap 8 with hand and makes the head of its three pawls over against three paws 22, hold jaw wrench 6 cws and drive 9 rotations of center leading screw, same, two sections of center leading screw 9 are twice, when compressing end of a period and expect that lid 1 is closed so the speed that compresses of three-jaw compact heap 8 increases because be reverse screw thread, three-jaw compact heap 8 can not rotate under the restriction of the short radius stay 13 in a left side, thereby prevented the loosening of three-jaw compact heap 8, again owing to lever principle, three paws 22 are uniform to expecting that lid 1 can produce very big thrust, just can guarantee 1 accurate positioning of material lid, seal goodly, operation pressure can be improved in the batch can, has improved discharge rate, reduced the surplus ratio of bulk cargo, because three paws 22 are tank body shell 4 external-compression types, avoid granular material that it is corroded in addition, do not have and not press tightly and phenomenon such as stuck, improved service life.

At last, it is stuck that auxiliary catch 5 is overturn, and further guaranteed the functional reliability of material lid 1.

Claims (1)

1. the rotary material of mainly being made up of material lid (1), center leading screw (9), screw set (7), jaw wrench (6), auxiliary catch (5) etc. of three-jaw external pressure covers, and is primarily characterized in that:

A. uniform on the outside face of the tank body shell (4) of three paws (22) outside material mouthful circle (2) circumference, each paw (22) is contained on the pawl seat (20) by bearing pin (21), and can freely overturn, pawl seat (20) is welded on tank body shell (4), and the rear portion of paw (22) also is provided with gear piece (28);

B. the two sections of center leading screw (9) are reverse thread, and hypomere is contained in the screw set (7), and epimere dress three-jaw compact heap (8) is installed jaw wrench (6) on the axle journal of upper end, and center leading screw (9) also is provided with oil duct (10) and oil nipple;

The upper surface of c. expecting lid (1) has been installed short radius stay (13) in a left side that is mutually 120 ° of angles and right long radius stay (23), expects on the left-external side surface of lid (1) Z-shaped plate (14) to be installed;

D. expecting on mouthful outside face of the tank body shell (4) of the circumference left-external side of circle (2), installed one by upper flat plate (15), the four-bar linkage that two blocks of epipleurals (19), two lower side panels (29), four connecting rods (30), four pitman shafts (24) etc. are formed, the bearing sleeve (17) of the middle perforate mounting strap antifriction-bearing box (18) of upper flat plate (15), two pitman shafts in bottom (24) are gone up dress assist spring (25), and turnover limiting stopper (27) is installed on the outer facade of outer epipleural (19);

The upper left plate of e.Z template (14) is contained on the upper flat plate (15) with pivot pin (16), and is subjected to the support of antifriction-bearing box (18), opens position-limited trough (26) on the left neighboring of the upper left plate of Z-shaped plate (14).

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