CN86108004A - The bucket lip sheath - Google Patents

Abstract

One or more sheaths are housed on the bucket leading edge, and each sheath has the anterior and rear portion of a round blunt, and the rear portion is divided into two support arms that separate.Porose by support arm, preferably concentric.Ring is placed in the hole, slidably; Its inward flange and the bucket lip between two arms weld together.

Description

The present invention relates to the bucket lip sheath.

Particularly, the invention provides a kind of sheath, it has a whole jacket body.This jacket body has front portion and rear portion of a round blunt.The rear portion is divided into two support arms that separate, and forms an opening dead slot.A hole is arranged on a said arm at least, lead to said dead slot.One slidably ring be contained in the said hole, and whole basically ring all is contained in the hole.The inner of ring is fixed on above the bucket lip, and leading edge stretches in the said opening dead slot and encircles inner adjacency.On leading edge and ring a weld seam is arranged, shape is similar to the inner edge of the said ring that is positioned at hole bucket lip part.

With reference to accompanying drawing, below most preferred embodiment of the present invention will be described.

Fig. 1 is the scraper bowl partial plan, and common teeth and sheath of the present invention are housed.Other parts of scraper bowl have been removed for the size of dwindling figure.

Fig. 2 is the sectional drawing that draws according to the indicated plane of Fig. 1 line 2-2.

Fig. 3 is the part enlarged drawing of structure shown in Figure 2.

Fig. 4 is the plan view of structure shown in Figure 3.Other parts are removed.

The sectional drawing that Fig. 5 makes according to the indicated plane of Fig. 4 line 5-5.

Usually need a thick-walled metal scraper bowl when carrying out various excavations, mining and dredge operation, and generally comprise a horizontal lower plane 6, generally it is level basically.Its side 7 is bent upwards, and has played the effect of surrounding at least in part.

The feature of scraper bowl is that a leading edge 8 is arranged, and many teeth 9 are housed on it.They are apart opening in the width of scraper bowl usually, and an outstanding forward very big segment distance.Although teeth 9 has various structure, in general, there is not specific (special) requirements, these parts shown in yet just having only on the figure as profile of tooth.Teeth to be installed separately on scraper bowl and normally to be dug in the thing in order being easy to dig.Land on the tooth or cap are normally removable, because they are easy to be subjected to serious wearing and tearing, and in order to excavate the frequent tooth cap that needs to change better.

Although scraper bowl does not have further necessity of protection in some cases, under many circumstances, owing to dug the bump of thing, the bucket lip 8 between each tooth 9 is subjected to serious scratch, wearing and tearing and chipping.

For fear of some such wearing and tearing and return to better duty, specially installed according to sheath 11 provided by the present invention in the bucket lip part that has been worn.Supplied with many such sheaths, on the bucket lip between per two adjacent teeth 9, a sheath has been installed all.Sometimes also be installed on the forward position of scraper bowl side.

Each sheath 11 have one more blunt to forward part 12, length is than the length much shorter of tooth 9, width is slightly less than the width between the adjacent teeth, but occupies the left space of enough big between cog.Sheath 11 is normally made of high alloy cast steel, and forms the shape that is similar to teardrop substantially on the vertical section, as shown in Figure 2.Sheath has leading edge 13, and it can be slightly sharper keen than the remainder of jacket body, increases earlier or broadening, and from large to small then, sheath is split up into two support arms 14 and 15 backward, and two support arms limit and form a dead slot 16 thus.Fit dimension will guarantee to allow leading edge 8 be loaded into.Cooperation does not need tight especially, preferably than the tight fit pine.Like this, sheath two arms can be easy to install to bucket lip and partly get on.And between adjacent teeth 9 centering approx.

The upper and lower interface of the groove between two support arms preferably is flat basically, and parallel to each other, and the outer boundary of sheath is preferably conical, and the rear portion is thin.

According to specially design of the present invention, two holes 21 and 22 are arranged on the arm 14 and 15.Coaxial line is normally made in hole on axis of pitch 23 (Fig. 3).Each hole is not in fact round in plan view, but oval.Major axis in a lateral direction, as shown in Figure 4.

Pack in each hole one and encircle 24, its thickness is near the thickness of adjacent support arm.Its face profile is oval-shaped equally, and more smaller than the outline line in hole.The cross section of ring 24, as shown in Figure 4, preferably conical.Little near outer end or top, bottom or big near the bucket lip place.Thereby ring inwall 26 is conical.The size of ring should guarantee to allow it enter easily in the hole 21, and can allow it move easily, makes it to join with contiguous bucket lip 8.When any one ring is installed, does not need to use any instrument or take great power.

Ring is gone into the position and with weld seam 27 it is fixed on position above the bucket lip with the inwall in bucket lip and hole 21 back that joins.Generally speaking, ring and sheath 11 do not weld together.Two boxing of each sheath to the present position after, find in practice that sheath fixes finely, played the effect of the guide edge of the bucket lip that protection exposes.The total performance of scraper bowl has obtained very big improvement, and the edge is very even, and it is fine to be dug the thing guidance quality.

In some cases, even bucket lip 31(is Fig. 5) be out of shape or be worn, 32 fixing in each hole 33 and 34 on ring is an effective locator.This ring can not stretch out jacket outer surface 36 fully yet when bucket lip had heavy wear.Even so, weld seam 37 also can remain on other part on the due position, but, if be ready, can adopt additional weld seam 38.

Find when adopting this device that the horizontal elliptical shape of ring can prevent effectively that the sheath on the bucket lip from reversing, and can increase the bonding area of annular joint face.

Under any circumstance, sheath is installed can not have any harmful effect to the mining ability of full depth tooth 9, can prevent or compensate the inordinate wear that bucket lip inserts opening dead slot part on the contrary, thereby improve total functional performance.

Although the size of sheath without limits, the weight of the sheath made from low-alloy steel is generally in 250 to 300 pounds scope.

Claims (6)

1, a kind of sheath, a sheath body is arranged, the front portion of sheath body is a round blunt shape, the rear portion is divided into two arms, form an opening dead slot, at least on an arm, have the hole, lead to said opening dead slot, one slidably ring be contained in the said hole, and whole basically ring all is contained in the hole, said ring is inner to be placed on the bucket lip that stretches in the opening dead slot, bucket lip extends forward, join with ring the inner, on said leading edge and ring a weld seam is arranged, shape is similar to the inner edge of the said ring that is positioned at hole bucket lip part.

2, according to right 1 described a kind of sheath, comprise a pair ofly by the hole that wall limited, open in corresponding support arm in each hole, and in the relative both sides of said bucket lip centering each other.Also include two rings, put a ring in each corresponding hole, its end joins with said wall and said bucket lip.

3, according to right 2 described a kind of sheaths, be used for firm bucket leading edge, this leading edge has an external surface and inner surface, they are parallel to each other, the guide edge that between said leading edge surface, also has a horizontal expansion, said to the forward part substantial symmetry in central plane, said two support arms are integral types,, extend back in parallel with each other to forward part from said, the surface of two support arms joins with the guide edge of leading edge external surface and inner surface and horizontal expansion basically, two rings are contained in the inwall of hole, removable, and vertical with said plane, and ring is inner to join with bucket lip.

According to right 3 described a kind of sheaths, it is characterized in that 4, each hole and ring are oval from being parallel to said plane basically.

5, according to right 1,2,3 or 4 described a kind of sheaths, it is characterized in that having the inwall of a ring at least is taper, an end is thicker.

6, according to right 5 described a kind of sheaths, it is characterized in that an end and bucket lip that conical inboard wall is thicker join.

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