CN86209610U - Digging bucket teeth - Google Patents

Abstract

The utility model relates to a locking device for digging bucket teeth. The digging bucket teeth are provided with vertically aligned tunnels for installing the locking device. The locking device comprises a thin long pin which is provided with a cylindrical part with reduced diameter in the middle, and a suspending basket type spring which is principally installed around the cylindrical part. The cylindrical part also provides a spherical shape hole bearing type connection between a locker and the digging bucket teeth.

Description

Digging bucket teeth

The present invention relates to a kind of excavator shovel tooth, particularly relate to a teeth and be formed in locker between crown and the toothholder with normal pin with a basket-hanging spring.

Industrial two-part locker the earliest is in patent 2,483, and is open in 032.This locker comprises wedge pin and the rubber door bolt of using as locker.This can unload crown from toothholder down, but the dismounting of locker is very difficult, need apply a power from below.The rubber lock portion of the teeth of a kind of industrial locker or 2,483, No. 032 patent can be from 2,846, see in No. 790 patents.

Find that subsequently previous locker can not hold it in the position of alignment pin holes, and, can see the structure situation of a kind of industrial teeth of use thereafter in No. 506 patents 2,919.Wherein we see that locker includes some ripples or boss that being used on locker meshed wedge pin.This principle has been improved in No. 654 patents 3,126, has adopted the multiple spot engagement, but a reversible pin-apply a power at its top just can to load onto and dismantle is arranged.This form of structure is used finely for many years, because the excavating resistance that teeth is adjourned is bigger, although be many boss engagements, pin also can be ejected.

This has caused 4,431, improved crown and toothholder in No. 173 patents.To certain teeth, the remodeling product has used in practical operation well and has suffered, but to the excavator shovel tooth in the digging operation that is used in effort and not obvious.Usually these teeth of being installed on the scraper bowl of rope bucket shovel lack than broad, and use side installation locker (seeing patent 4,326,348 and 4,428, No. 131) in the past always.The front end of its toothholder is shorter, and as in teeth, above-mentioned existing vertical locker is considered to unconformable.

Yet, the present invention is by adopting the locker of a uniqueness, particularly at locker or with the form of flexible member, solve this problem, this flexible member is made the form of springs of a basket-hanging, just, this basket-hanging spring is actual to be the shape of clipping the ellipsoid mid portion at two, with 3,832, the spring locker difference in No. 077 patent.

According to the present invention, now used a normal pin, there is not common undesirable shearing for the first time at the inner surface of crown.This point has realized by the use of basket-hanging spring, and has caused increasing toothholder front end spear and the intensity of pin when the vertical excavation power that allows.

Below in conjunction with accompanying drawing narration the present invention, wherein:

Fig. 1 is the fragmentary cross-sectional view of an excavator shovel tooth that design is made according to the present invention or rope bucket teeth.

Fig. 2 is the phantom drawing as the basket-hanging spring of teeth locker parts use.

Fig. 3 is the perspective view of wear-resistant sleeve, it can use with locking device of the present invention, the sideline that is contained in the wear-resistant sleeve on the toothholder that expression has partly disconnected among the figure.

Fig. 4 is the fragmentary cross-sectional view of toothholder front end, and bonded wear-resistant cover the application of the invention locker is expressed possible move mode.

Fig. 5 is the lateral view of the crown used in practice of a present invention.

Fig. 6 is the incomplete top view of Fig. 5 mesostyle.

Fig. 7 is the infull sectional view that the line 7-7 along Fig. 6 is got.

Fig. 8 is the lateral view of the toothholder embodiment that uses in practice according to the present invention among Fig. 1.

Fig. 9 is the infull lateral view of another kind of toothholder front end, and it can also be different from the toothholder among Fig. 8, and wear-resistant sleeve is not installed in best mode with in the operation of the present invention.

Figure 10 is used for the perspective view of the used semi-finished articles of basket-hanging spring in the shop drawings 2.

At first with reference to figure 1, the piece number 11 that provides in illustration is generally represented the vertical section of teeth.Tooth 11 comprises toothholder 12, and this toothholder is installed on the bucket lip of excavator leading edge or excavator usually, and promptly the rope bucket shovels scraper bowl, power shovel etc.Toothholder has a socket arrangements 13, can be enclosed within on the scraper bowl bucket lip, and leading section 14 is installed in (see figure 5) in the pod 15 of teeth point 16.

As can be seen from Figure, toothholder is equipped with up and down wear-resistant sleeve 17, is used for protecting the upper and lower surface of toothholder, prevent shovel dress material by the time be worn or abrade.Wear-resistant sleeve 17 is identical, thereby is interchangeable.A tang that stretches out forward 18 is housed on the wear-resistant sleeve 17, and this tang is contained in crown 16 and stretches out backward on the wall 19 of top and the bottom.Therefore, in first example, crown 16 is used for blocking wear-resistant sleeve puts it in place on toothholder.

Piece number 20 refers to retaining mechanism, and it detachably is fixed on crown 16 on the toothholder 12, particularly is fixed on the toothholder front end 14.Retaining mechanism 20 comprises that this cover is found in Fig. 2 on the cover 22 of the pin 21 of a vertical elongated and a hanging basket shape.

At first see pin 21, this is a single more elongated element, and the mid portion 23 of a tube reducing is arranged.This forms bigger end, sees 24 among Fig. 1.Each end at pin 21 has countersunk 25, then can dismantle at an easy rate and install with the demounting tool or the drift of crown.By immersing oneself in the application in opening or hole, guaranteed that the duct of every pound of impact force aligning pin pushes away downwards, thereby eliminated idle work, and provide hard pit to place demounting tool simultaneously, safe and convenient.

As one embodiment of the present of invention, get in touch a typical crown 16, its weight is approximately 43 pounds, and the horizontal dimension at top 26 is about 8 inch (Fig. 5 and Fig. 6).The length of pin 21 is 5.32 inch, and the mid portion length of tube reducing is 3.08 inch, and the diameter of end 24 is 1.12 inch, and the diameter of the mid portion 23 of tube reducing is 1.03 inch.

Pin 21 is seen Fig. 5 and Fig. 6 by aperture 27(up and down) stretch into the last tooth wall 19 of crown 16.As can be seen from Figure 5 crown 16 is that every limit that tow sides can be used can be settled up or down along with the serious wear degree.

Pin is also by vertically extending aperture or duct 28(Fig. 1) stretch into toothholder front end 14.Duct 28 also can be seen in toothholder shown in Figure 8 12, also can see on the part toothholder 112 in Fig. 9, and piece number is 128.

Duct 28 or 128 depends on the circumstances, and its profile is conformed to hold basket-hanging spring 22.In other words, duct 28 is radially enlarged to meet the ellipsoid profile of basket-hanging spring 22.In fact, the mid portion of spring is the spheroid-like that two ends are blocked.

Among the embodiment that provides in the above, the basket-hanging spring 222 that surpasses the wide crown of about 8 inch is made by semiproduct 29, sees Figure 10.Semiproduct 29 high 3.47 inch, wide 3.35 inch, seam 30 long 1.95 inch, wide 0.03 inch, its center is at a distance of 0.347 inch, and the breach 31 of top and bottom is aimed at and is had same width and the degree of depth is 0.18 inch with stitching.

Semiproduct 29 are deformed into the shape among Fig. 2, and at this moment it highly is 3.25 inch.Become arc or bucket amine shape-elliposoidal-and be in the length range of seam 30, to realize, from Fig. 2, can draw.This has just produced the top and the bottom 32 of garden post neckline shape, and it highly is 0.58 inch, the distance at the end of the Shang Ding of the promptly routine centre joint 30 and last breach 31.Semiproduct have the part of breach 31 and outwards expand formation end flange 33 with about 45 °.Being relaxation state in Fig. 2, is confined state in Fig. 1, the interior garden in duct 28 that is slightly smaller than in garden week of basket-hanging spring 22.Therefore a vertical open gap 34 is arranged on week in the garden of basket-hanging spring 22.

In use, teeth of the present invention provides a vertical pin of monomer, rather than as 4,326,348 and 4,428, two side direction locking pins in No. 131 patents.Pin 21 is by basket-hanging spring 22 chuckings, this spring is as a ball-joint, make pin not be subjected to shearing force (causing the fracture of vertical pin usually), keep pin and can not eject prematurely, and play the support locker, prevent losing of wear-resistant sleeve, and cause coming off of crown 16, this means the destroyed or fracture of crown 16 meetings under thump load, at this moment, do not have thing can prevent that wear-resistant sleeve from coming off usually.These are not useless parts in addition, therefore, in this example, provide one 8 inch, and about 43 pounds crown, each wear-resistant sleeve nearly weigh 28 pounds.As providing the crown of same size in this example, toothholder nearly weighs 78 pounds.The main distinction between the toothholder 12 and 112 of Fig. 8 and Fig. 9 is the structure of the toothholder 12 of horizontal gap or passage 35, and the guide rail 36(that sidewall is equipped with wear-resistant sleeve 17 sees Fig. 3), with 4,326,348 and 4,428, No. 131 patent is similar.

See Fig. 4 now, the effect of the ball-joint of retaining mechanism 23 is described with figure.For the ease of understanding and clearly explanation, crown 16 omits from toothholder 14 front ends.Yet crown is the insertion instrument, is subjected to concentrated load, and often with vertical arcuate movement, its direction is definite by the direction of concentrated load, for example up or down.This causes retaining mechanism 20 correspondingly to move.For example Fig. 4 solid line is represented retaining mechanism under big downward concentrated load, and dotted line 20 ' expression teeth is subjected to concentrated load upwards to do the position of time spent retaining mechanism.

Particularly because the effect of ball-joint, the forefoot area that crown is centered around front end 14 mounting ends moves both vertically, and helps from the duct 28 axle center and is the garden arc, promptly from the intersection point of front end center line and duct 28 axis.Also for example 14a and 14b do the motion of rolling form to crown with respect to the garden curved surfaces of bottom incline on front end.

In order to regulate the effect of this rolling or ball-joint, the 36-of two parts up and down that amplifies duct 28 sees below the mid portion of Fig. 1.The pod 15 that also amplifies crown 16 sees 37 ' play the flange 33 of regulating action, particularly basket-hanging spring 22.This king-sized projection is made of the last lower wall 19 that is defined as pod 15 in duct 27 aforementioned, sees especially clearly from Fig. 6 and Fig. 7.Therefore, especially making the inside of crown 16 be suitable for regulating the ball-joint effect has illustrated in Fig. 4.Preferably recess 37 is used for regulating flange 33, and still, flange is not only in place or is pushed recess 37, and is to do the time spent at above-mentioned ball-joint, and flange becomes assembly motion with pin with crown.

The inside of crown 16 or pod part also are installed the tang 18 of the wear-resistant sleeve of being convenient to mesh 17.This can see clearly from the inwall inclined-plane 38 of lower wall 19 on the crown 16.

By this device, basket-hanging spring particularly, at least after can guaranteeing temporarily that crown is lost or pin is also lost sometimes, wear-resistant sleeve does not come off, but wear-resistant sleeve can use the long enough time usually, operator or maintenance personal can notice losing of crown, and change it before wear-resistant sleeve comes off.This also may run into changing shifts, or the maintenance interval, therefore 4 to 8 hours possibly.

As far as I know, the basket-hanging spring never used in any application, and was more rare in digging technology.Its application provides a kind of lighter and safer equipment and the system of convenient dismounting.It uses " activity-hinge " side direction locking pin.

In use, the embodiment of the basket-hanging spring 22 of proposition comprises the end of expansion and heaves barrel amine and radiant type center.The former interaction energy avoids spring to enter pinhole in the crown 16, keeps wear-resistant sleeve when crown is broken, and the latter's one radiant type core can make the ball-joint effect and be clamped on the front end of toothholder with the spring handle crown.Vertical locking pin 21 has a groove part, and its intermediate length can hold the basket-hanging spring, thereby is equipped with in stop device and the carrying scope at crown at each end, and pin just is left in the basket-hanging spring.

In above-mentioned manual, set forth details of the present invention, wherein provide many variations of details, design can be made by those of ordinary skills according to the present invention.

Claims (12)

1, a locker that is used for teeth etc. comprises the elongated pin of the garden post part with tube reducing and the basket-hanging spring of in fact partly installing around above-mentioned garden post, provides the sphere between above-mentioned locker and teeth to be connected with socket type.

2, locker as claimed in claim 1, wherein, above-mentioned basket-hanging spring comprise one more elongated, have the radially enlarged single part in middle part with respect to spring and parts.

3, locker as claimed in claim 2, wherein, above-mentioned mid portion comprises the slit of many axial elongations.

4, locker as claimed in claim 3, wherein, above-mentioned basket-hanging spring end comprises angled flange, notched end is from the slit of the longitudinal extension of above-mentioned mid portion separately.

5, locker as claimed in claim 1, wherein, above-mentioned pin has planar end, and in order to take out pin from above-mentioned teeth, each end face is equipped with an opening of immersing oneself in.

6, teeth, comprise the toothholder of being with the front end, crown detachably is installed on the above-mentioned front end, in the crown of above-mentioned front end, the duct of vertically aligned locker, and the duct of above-mentioned front end has the spheroid-like of two brachymemma usually, with a locker that detachably is installed in the above-mentioned duct, above-mentioned locker comprises the more elongated pin and the two common elliposoidal expanded type of a butt spring at a middle part that radially enlarged end is arranged and radially reduce, and is installed in the middle part and the anterior duct of toothholder of above-mentioned pin.

7, teeth as claimed in claim 6 comprises a wear-resistant sleeve, puts a tang that matches with the pin end that stretch out forward is housed.

8, teeth as claimed in claim 7, wherein, above-mentioned crown has inner surface oblique in, is used for and above-mentioned tang engagement.

9, teeth as claimed in claim 6, wherein, above-mentioned spring has flange in the end, and above-mentioned crown has pit, to hold above-mentioned flange.

10, the wear-resistant sleeve of a teeth toothholder, body have sidewall and guide rail and stretch out forward, and complete tang cooperation is installed in the pod of corresponding crown.

11, the teeth point of a toothholder, be suitable for being assemblied on the toothholder, have normal pin and flanged basket-hanging spring, above-mentioned crown is equipped with obverse backward pod, be used for holding the front end of toothholder, reach vertically aligned duct and be used for installing above-mentioned pin, above-mentioned pod is made pit in the front in above-mentioned duct, is used for holding the spring flange.

12, crown as claimed in claim 11, wherein, above-mentioned pod is equipped with the tang that sweptback face is used for meshing wear-resistant sleeve.

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