CN201176315Y

CN201176315Y - Pin hole positioning type spring balancer for manhole or inspection hole of container

Info

Publication number: CN201176315Y
Application number: CNU2007200757002U
Authority: CN
Inventors: 吴新华
Original assignee: SHANGHAI TONGHUA STAINLESS STEEL PRESSURE VESSEL ENGINEERING Co Ltd
Current assignee: SHANGHAI TONGHUA STAINLESS STEEL PRESSURE VESSEL ENGINEERING Co Ltd
Priority date: 2007-10-23
Filing date: 2007-10-23
Publication date: 2009-01-07
Anticipated expiration: 2017-10-23

Abstract

A pin positioning type spring balancer of a container manhole or an inspection hole relates to a spring balancer, which is convenient for operation when opens and closes the manhole, and can guarantee the safety. The utility model comprises a combined frame, a spiral spring, a shaft, a shaft sleeve and a spring box, and is characterized in that the inner ring end portion of the spiral spring is fixed through inserting in a peripheral groove of the shaft sleeve, the outer ring end portion thereof is penetrated into a flat straight flute of the spring box, one end of the shaft is provided with a retaining shoulder, a hexagonal head is arranged outside the retaining shoulder, a pin hole is arranged on the side of the retaining shoulder, a lug boss of an external frame is also provided with a pin hole, and the other end of the shaft is provided with an elastic collar groove. The pin hole on the side of the retaining shoulder which is aligned with the side of the lug boss of the external frame is located through inserting with a pin shaft, the external frame limits a middle frame and the spring box, an internal frame is connected with one end of the middle frame through a small shaft, the internal frame is provided with a short cylinder to insert into a long round hole of a middle frame connecting plate, an adjusting screw is arranged on the upper end of the long round hole, the flat straight flute of the spring box is limited by the upper end surface of the connecting plate of the external frame, and a convex shoulder of the spring box is limited by the lower end surface of the connecting plate.

Description

The pin-and-hole locate mode Spring balancer of container manhole or sighthole

Technical field

The utility model relates to the Spring balancer that plays the force balance effect when the manhole of container or sighthole keying.

Background technology

Usually when the container interior diameter surpasses 500mm, manhole should be set, during less than 500mm sighthole should be set, be convenient to personnel's turnover when installation, inspection, maintenance, container in use also needs often to open and close manhole or sighthole, and the keying of manhole or sighthole (below be referred to as manhole) is generally realized by the manual operation manhole cover.

In order to satisfy intensity and sealing requirements, manhole cover all has suitable thickness, and Operating Weight is big during keying, and has safety hazard.

The utility model content

Operating Weight was big when the utility model opened and closed in order to solve manhole cover, and had the problem of safety hazard, and a kind of Spring balancer is provided, when manhole opens and closes by spring force balance manhole cover gravity, but expendable weight, handled easily ensures safety.

The technical solution of the utility model comprises combined rack, volute spiral spring, axle, axle sleeve, spring case, it is characterized in that the volute spiral spring group of being made up of one or more volute spiral springs is placed in the osed top spring case, the outer peripheral groove internal fixation of axle sleeve is inserted in the inner ring end of volute spiral spring group, and the end, outer ring is stretched in the flat straight trough of spring case; Sleeve lining has the keyway trim key and the keyway of axle to assemble; One end of axle has shoulder block, and shoulder block is outward six square toes, and the shoulder block side is drilled with one group of pin-and-hole, and on the boss of the corresponding outer side frame of pin-and-hole one group of pin-and-hole is arranged also, spool the flexible circlip groove of the other end; Axle relies on the shoulder block of an end and flat gasket, the circlip axial location that the other end is installed; Six square toes on the turning cylinder drive the axle sleeve rotation by flat key, axle sleeve drives the rotation of volute spiral spring group inner ring again, make volute spiral spring group pretension, regulate the initial torque of volute spiral spring group, in shoulder block side and outer side frame boss side surfaces aligned pin plug bearing pin, axle is circumferentially located on frame thereafter; Outer side frame, intermediate stand all are contained on the axle, can turn round around axle separately; Outer side frame is in the intermediate stand outside, and is spacing to middle frame and spring case; Interior side frame connects by little axle in the inboard of intermediate stand one end, and has short cylindrical to insert in the slotted hole of the connecting panel on the intermediate stand on the interior side frame, and there is set screw the upper end of slotted hole, and side frame is around the rotating angle of little axle in can regulating; Interior side frame sways with intermediate stand, its angle＞90 ° when the top dead point; Outer side frame, intermediate stand, interior side frame are foundry goods, also can be welded structures; One side of spring case is flat straight trough, slides therein in the end, outer ring of volute spiral spring group, and spring case by the upper surface of flat straight trough by the connecting panel of side frame outside last, plays position-limiting action in a direction when axle turns round; Spring case opposite side convex shoulder plays position-limiting action in spring case lower surface by upper junction plate when axle turns round in another direction; The volute spiral spring of the utility model pin-and-hole locate mode Spring balancer can be determined different spring structure sizes according to load, make the spring restoring force of Spring balancer and the gravitational equilibrium of manhole cover, the long-armed of outer side frame is fixed on the manhole flange, and the long-armed of interior side frame is fixed on the manhole cover.

Pin-and-hole locate mode volute spiral spring balancing device of the present utility model is simple in structure, when opening or closing manhole manhole cover is turned round around anchor shaft, by spring force balance manhole cover gravity.Can lightly open by the spring restoring force when mentioning manhole cover, putting down behind the manhole cover is slowly descended by spring restoring force balancing gravity closes.Make manhole cover open and close laborsaving, steady, safety.Be specially adapted to the manhole at vertical vessel upper cover and horizontal vessel top.

Description of drawings

Fig. 1: Spring balancer front view; Fig. 2: Spring balancer birds-eye view;

Fig. 3: Spring balancer lateral plan; Fig. 4: Spring balancer A is to view;

Fig. 5: Spring balancer C is to view; Fig. 6: single volute spiral spring scheme drawing;

Fig. 7: spring and spring case component drawings; Fig. 8: axle sleeve 12 scheme drawings;

Fig. 9: three Spring balancer scheme drawings that volute spiral spring is formed;

Figure 10: axle sleeve 18 scheme drawings; Figure 11: axle 14 scheme drawings;

Figure 12: outer side frame scheme drawing; Figure 13: intermediate stand scheme drawing;

Figure 14～15: Spring balancer and manhole assembling (double as bottom dead point) scheme drawing;

Figure 16: manhole cover and Spring balancer assembly top dead center position scheme drawing.

The specific embodiment

The volute spiral spring group 21 of the utility model (referring to accompanying drawing 2, Fig. 7) can be made up of 1 or 2 volute spiral springs 211,212, Spring balancer also can have three volute spiral springs, and its pattern and structure are to reduce or increased a volute spiral spring 213 (Fig. 9) in the volute spiral spring group 21 in the spring case 19; A plurality of volute spiral springs 211,212 can be installed in the osed top spring case 19 side by side, flat straight trough 191 interior can the slips of spring case 19 are inserted in end, volute spiral spring outer ring, in the outer peripheral groove 181 of volute spiral spring inner ring end insertion axle sleeve 18 fixing (Figure 10), cover of dust 8 and spring flange 9 sealings are arranged between axle sleeve 18 and the spring case 19.The axis hole interior (Fig. 2) that axle sleeve 18 two ends are fixed on the spring case both sides is equipped with axle sleeve 12 and axle sleeve 20 and grommet 10 respectively in the axis hole of intermediate stand 2.Outer side frame 1 is contained in the outside of intermediate stand 2, and axle 14 is axis of revolutions of outer side frame 1, intermediate stand 2 and spring case 19, and the one end is made axial restraint by flat gasket 15, spring flange 16, the other end by the shaft shoulder 142 with holes do axial location (Fig. 2, Figure 11).Bearing pin 13 penetrates by the pin-and-hole on the shaft shoulder 142 143 in the pin-and-hole 103 of outer side frame 1, axle 14 is done circumferentially to locate on the side frame 1 outside (Fig. 2, Figure 11).

(Figure 11) is equipped with flat key 11 (Fig. 2) on the keyway 141 of axle 14.Flat key 11 is connected (Fig. 2) by the keyway on the axle sleeve 18 181 (axle sleeve 12 is housed respectively in the axis hole of Figure 10 intermediate stand 2) with axle sleeve 18, keyway 121 by (Fig. 8) on another axle sleeve 12 is connected (Fig. 2) with axle sleeve 12 simultaneously, when axle 14 rotations axle sleeve 18 and axle sleeve 12 is kept synchronously.

End face by axle sleeve 18 1 sides on the axle sleeve 12 of intermediate stand 2 has cylinder pin hole 122 (Fig. 2, Fig. 8), axle sleeve 18 1 sides on the other side also have cylinder pin hole 182 (Figure 10), with in elastic cylindrical pin 17 insertion

cylinder pin holes

122 and 183 keyway 182 of axle sleeve 18 inner rings being aimed at the location with the keyway 121 of another axle sleeve 12 inner rings, be convenient to axle 14 loading and unloading.

Interior side frame 3 is connected (Fig. 2) with spring flange 7 with intermediate stand 2 by little axle 5, flat gasket 6, short cylindrical 301 (Fig. 1) on it inserts the slotted hole interior (Figure 13) on intermediate stand 2 connecting panels 201, regulate the corner of interior side frame 3 by screw 4 around little axle 5, make manhole cover and manhole flange keeping parallelism (Fig. 1, Figure 14).

Two long-armed being weldingly fixed on the manhole flange 22 of outer side frame 1, and two long-armed are weldingly fixed on the manhole cover 23 of interior side frame 3 (Figure 14～Figure 16).

During operation manhole cover 23 is opened, go to top dead point (Figure 16), unclamp and extract bearing pin 13 (Fig. 2) out, turn six square toes of axle 14 1 ends, drive axle sleeve 18 rotations by axle 14, axle sleeve 18 drives the rotation of volute spiral spring 211,212 inner rings again, makes the volute spiral spring pretension, regulate the initial torque of volute spiral spring, plug bearing pin 13 then and make axle 14 realize circumferentially location (Fig. 2).

Angle＞90 on manhole cover plane and manhole flange 22 planes ° when manhole cover 23 is opened to top dead point, this moment intermediate stand 2 afterbody convex shoulder 202 (Fig. 5, Figure 13) by the downside of the connecting panel 101 of last outer side frame 1, realize top dead point spacing (Figure 16), volute spiral spring 211,212 is in initial pretension state simultaneously, and spring case 19 realizes that by connecting panel 101 downsides of last outer side frame 1 the volute spiral spring top dead point is spacing by periphery convex shoulder 192.Manhole cover turns over 90 ° of axis (Figure 16) around axle 14, manhole cover 23 by gravitys are by connecting panel 201 (Fig. 1 of intermediate stand 2, Figure 14) force spring case 19 to compress volute spiral spring 211,212, the manhole cover closure that slowly descends under the spring force effect arrived bottom dead point after this moment, volute spiral spring changeed 90 °.Its weight has alleviated hoisting force by the volute spiral spring force balance when opening manhole cover 23.

Claims

1, the pin-and-hole locate mode Spring balancer of container manhole or sighthole, comprise combined rack, volute spiral spring, axle, axle sleeve, spring case, it is characterized in that the volute spiral spring group of being made up of one or more volute spiral springs is placed in the osed top spring case, the outer peripheral groove internal fixation of axle sleeve is inserted in the inner ring end of volute spiral spring group, and stretch in the flat straight trough of spring case the end, outer ring; Sleeve lining has the keyway trim key and the keyway of axle to assemble; One end of axle has shoulder block, shoulder block is outward six square toes, and the shoulder block side is drilled with one group of pin-and-hole, and on the boss of the corresponding outer side frame of pin-and-hole one group of pin-and-hole is arranged also, plug bearing pin in shoulder block side and the outer side frame boss side surfaces aligned pin, axle is circumferentially located on frame; The flexible circlip groove of the other end of axle, axle rely on the shoulder block of an end and flat gasket, the circlip axial location that the other end is installed; Outer side frame, intermediate stand all are contained on the axle, can turn round around axle separately; Outer side frame is in the intermediate stand outside, and is spacing to middle frame and spring case; Interior side frame is at the inboard of intermediate stand one end and pass through little axle connection, has short cylindrical to insert in the slotted hole of the connecting panel on the intermediate stand on the interior side frame, and the upper end of slotted hole has set screw to regulate interior side frame around the rotating angle of little axle; Interior side frame sways with intermediate stand; Spring case by the upper surface of flat straight trough by the connecting panel of side frame outside last, plays position-limiting action in a direction when axle turns round; Spring case opposite side convex shoulder plays position-limiting action in spring case lower surface by upper junction plate when axle turns round in another direction.

2, the pin-and-hole locate mode Spring balancer of container manhole according to claim 1 or sighthole is characterized in that having between axle sleeve and the spring case sealing of cover of dust and spring flange.

3, the pin-and-hole locate mode Spring balancer of container manhole according to claim 1 or sighthole is characterized in that axle sleeve has cylinder pin hole with the end face of the relative side of axle sleeve of intermediate stand, inserts elastic cylindrical pin in the cylinder pin hole.