KR970000490B1 - Dragline bucket and method of operating the same - Google Patents

Abstract

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Description

Dragline buckets and how they work

1 is a partial schematic view of an associated main mover and conventional dragline bucket showing various operating characteristics.

FIG. 2 is a partial plan view of the apparatus of FIG. 1 showing a conventional bucket actually abutting a vertical sidewall or bank. FIG.

3 is a perspective view of a bucket lip showing a tooth arrangement for the present invention.

4 is a partial cross-sectional cutaway plan view of a bucket front portion using the inventive concept.

5 is a partial cross-sectional cutaway side view of the bucket of FIG.

6 is a partial schematic plan view illustrating an implementation of the present invention when a bucket encounters a boulder or the like.

* Explanation of symbols for main parts of the drawings

11: boom 12: bucket

13: slope 14: hoist line

15: dragline 16: dumpline

19: adapter 21: locking pin

25 side wall 26 bottom wall

27: vertical wall 28: boulder

The present invention relates to a dragline bucket and a method for operating a dragline bucket, and more particularly, to a bucket and a method of operating the same, which prevents the problem of slewing by a new tooth arrangement.

Dragline buckets are a type of excavation buckets that are filled by excavating banks and materials to be excavated by the dragline and then wound up by hoisting ropes and then dumped. As early as 1913, this dragline bucket was known from US Pat. No. 1,050,838. The most recent detailed description can be found in the inventor's US Pat. No. 4,791,738.

In recent years, the bucket slews, ie skews laterally when subjected to eccentric loads. This is especially true when keying, such as scraping off the vertical sidewalls, or close to eccentric boulder. The applicant has solved this problem by arranging teeth extending rearward in a V-shape, wherein the teeth progressively protrude toward the sidewalls from the longitudinal centerline of the bucket.

Dragline buckets have not used this arrangement for a long time. The excavator of US Pat. No. 2,060,867 is carried out without hoisting and dumping operations, but the teeth extending from the rear have an inverted V shape. Soviet patent 326,298 also does not perform hoisting and dumping operations again, but has a reverse V shape in the dredger.

Although the inverted V forms of teeth are known, they always used buckets whose movement is controlled by differential or wheels and are therefore not slewing.

Representative forms include US Pat. Nos. 3,791,054, 4,037,337, and US Pat. Nos. 306,228 and 682,605.

The forward V-shape is more similar to the dragline bucket of US Pat. No. 1,868,246. Other forward V-shapes have been referenced in US Pat. Nos. 1,803,654, 2,629,945 and 2,660,323, but they are all fixed against mounting by being fixedly mounted again.

According to the invention, the inventors arrange the teeth arranged in an inverted V shape suitably at an angle of approximately 75 ° to 80 ° on the lip of the bucket, ie the line is at an angle of approximately 75 ° to 80 ° to the longitudinal centerline of the bucket. Corresponding points on adjacent roots forming a and a given point on one root are connected. We also have a lip that is actually planar so that the teeth operate on the same plane.

This arrangement actually minimizes slewing due to the tooth arrangement towards the obstacle providing material towards the center of the bucket.

First, referring to FIG. 1, reference numeral 10 designates the same main mover as the crawler machine equipped with the boom 11 and other rigging for the operation of the dragline bucket 12 for moving material from the slope 13. The dumping mode is shown at the left of FIG. 1 as reference numeral 12 '. In a conventional manner, the bucket 12 is equipped with a hoist line 14, a drag line 15 and a dump line 16.

Referring now to FIG. 3, this shows an enlarged view of the front end of the bucket 12, with reference numeral 17 usually referring to a lip that is welded to the rest of the bucket, ie, the bottom and the sidewalls.

Referring also to FIG. 3, reference numeral 18 designates five teeth installed across the width of the bucket. These teeth may be of any acceptable construction, but usually employ a two-part construction using a temporary fixed point 20 by an adapter 19 and a locking pin 21.

As best shown in FIG. 4, the teeth 18 are arranged in an inverted V shape, ie in the reverse direction with respect to the forward direction of the bucket during excavation. As also shown in FIG. 4, the teeth are arranged at an angle of about 75 ° to 80 °. In particular, the line 22 connecting the corresponding point on an adjacent tooth and a given point on one tooth forms an angle A with respect to the longitudinal center line 23.

End teeth 18 'secure the lip portion with shroud 24 that protects the front edge of sidewall 25 (see also FIG. 3).

The lip 17 extends forward from the bottom wall 26 (see FIG. 5), which is bent around to form the back wall, as can be seen from the figure of FIG. 1.

Referring to FIG. 2, during operation, the bucket 12 is excavating or keying a portion of the vertical wall 27 substantially. In prior art buckets it is necessary to “crowd” the bucket against the bank or wall 27 by positioning the boom on the bank or off the bucket longitudinal centerline. This is shown in FIG. 2 as reference numeral 11 '. In such a state, the bucket is “slow”, ie moved laterally, which will not be unnatural for the same movement as a shovel dipper or other fixed bucket excavator. In contrast, the practice of the present invention eliminates the need for “crowding” because the forces are distributed differently. In particular, most inner teeth act as cut-out knives rather than planes that are susceptible to slewing.

Another advantageous feature of the present invention is shown in FIG. 6, wherein the bucket 10 is encountered with the boulder 28. As shown in FIG.

By the inverted V shape, the dragline 915 continues to tension and the boulder naturally comes to its center position 28 '.

Another advantage arising from the present invention relating to the bucket is described in the inventor's earlier US Pat. No. 4,791,738. When loading difficult materials, dragline buckets with straight transverse teeth are likely to tip up on the teeth if the material being loaded is difficult to penetrate. The structure of the inventor's prior patents provides for an increased pull-to-tip characteristic. A further advantage of using the inverted lip of the present invention now is that the bucket tip can be excavated, carrying all weight on both teeth on both ends as well as on the central setis. This provides 150% more penetration than conventional straight ribs and provides better safety because the bucket is installed on the outermost teeth and does not tip at the center so that the bucket does not go out.

Although the detailed description of the embodiments of the present invention in the foregoing specification is for the purpose of illustration, those skilled in the art may make various changes to the detailed description without departing from the spirit and scope of the present invention.

Claims (17)

A main body defining the side, rear and bottom walls and an open front part, defining a centerline between the side walls, the bottom wall being V-shaped, extending to the anterior lip and having excavation teeth, the teeth being flanked by gaps between adjacent teeth. Spaced and arranged to progressively protrude forward toward the sidewalls from the longitudinal centerline of the bucket, providing a dragline hoistline and a dumpline interconnected between the body and the main mover, wherein the spaced teeth are material Exert a gradual traction force on a dragline installed on the centerline of the bucket to pull the bucket on the material to mate and rupture and stably support the bucket to turn sideways to collect the material effectively; Dragging and dumping the bucket when the bucket is loaded. The method of claim 1 wherein the tow bucket of the bucket is moved across the bank surface against a vertically extending bank such that only one tooth of the longitudinal centerline is actually bonded to the material, and the towing is performed without substantial crowding and slewing of the bucket. Method characterized by the continuous degree. 2. The pulley of claim 1 wherein traction of the bucket allows only one tooth of the longitudinal centerline of the bucket to engage the boulder for the first time, and if the bucket moves further forward, the boulder does not slew the bucket to the center of the bucket. Progressively towing the bucket to move. 2. The method of claim 1, wherein the towing of the bucket is towed gradually such that when the bucket begins to tip through the ground, the bucket weight acts on the tooth furthest from the longitudinal centerline to increase the penetration force. The method of claim 1 wherein the providing of the bucket comprises the step of flattening the lip. The method of claim 1, wherein the provision of the bucket comprises the step of forming a front lip such that a line connecting a given point on one root and a corresponding point on an adjacent root forms an angle of approximately 75 ° to 80 ° to the centerline of the bucket. Characterized in that the method. It has side, rear and bottom walls and an open front part, with the bucket forming a centerline between the side walls, the bottom wall extending to the anterior lip with the excavation teeth, and the upper teeth spaced between adjacent pairs of teeth and from the bucket's center line towards the side wall. Providing a body that is progressively projected progressively and formed to form an angle of about 75 ° to 80 °, providing a dragline hoistline and a dumpline interconnected between the body and the main mover, (a) the bucket being vertical When only the teeth on one side of the longitudinal center line in contact with the extension bank are joined to the bank material, the teeth crush the material to collect the material in the bank and stably support the bucket to prevent the bucket from substantial crowding and slewing, (B) When only one tooth of the centerline of the bucket touches the boulder for the first time, the bucket continues to move forward. When the boulder moves to the center of the bucket without the actual slewing of the bucket, (c) the bucket weight acts on the tooth farthest from the longitudinal centerline as the bucket penetrates the ground and starts tipping, A method of operating a dragline bucket comprising the step of applying progressive traction. The bottom wall includes a bottom wall, a pair of side walls, and a rear wall, wherein the bottom wall is fixed to the lip in a spaced apart position so as to form a gap between the body having an inwardly V-shaped front rib and a pair of adjacent teeth sides. And a plurality of teeth having a front tip constituting a shaped structure, and means for securing the dragline, the hoistline, and the dumpline to the body to operate the dragline bucket for excavation purposes. The dragline bucket of claim 8, wherein the front tip of the tooth is arranged in a planar structure. 10. The dragline bucket of claim 9 wherein the lip portions provided in the gaps between each of the teeth are inclined surfaces to collect material crushed by adjacent teeth, respectively. 9. The dragline bucket according to claim 8, wherein the lip portion provided in the gap between the teeth forms a surface for collecting the material crushed by the teeth. 9. The dragline bucket of claim 8 wherein the V-shaped lips form two opposing linear leg portions that diffuse at an angle of approximately 150 ° to 160 °. 9. The dragline bucket of claim 8 wherein the V-shaped structure achieves two opposing economies spreading at an angle of approximately 150 ° to 160 °. The dragline bucket has a bottom wall, a pair of side walls, and a back wall, the walls cooperatively forming an open front portion and a cavity to receive collected material and the bottom wall defines a bottom boundary for the open front portion. A main body having an anterior rib that forms and also has an axis extending centrally between the sidewalls and spaced such that when the dragline bucket is towed along the material, it engages with the material and breaks it apart, forming a gap between adjacent pairs of teeth. Fixed to the lip in a closed position, wherein the lip portion is exposed to the material such that the lip is located adjacent to the axis of the bucket such that the pulverized material collected by the tooth is collected into the cavity of the body and the tip is generally concave. Multiple teeth and excavation necks that form the front tip, protruding more than all other root tips Dragline bucket, which is used to tow by collecting the material on the material characterized in that it comprises a means for attaching to the body a dragline, hoist line and, dump line to the main body to operate the dragline bucket to. 15. The dragline bucket of claim 14 wherein the front tips of the teeth are all located in the same plane. 16. The dragline bucket of claim 15 wherein the tip of the tooth defines a pair of opposed boundaries that diffuse at an angle of approximately 150 ° to 160 ° as a whole. A body having side, rear and bottom walls and an open front part, the body having drag, hoist and dump lines connected to the main mover, the bottom wall extending to the anterior lip with at least five excavation teeth. Wherein the anterior lip is planar V-shaped and the teeth are mounted on the lip so as to protrude progressively from the longitudinal centerline of the bucket toward the sidewall to form an angle of approximately 75 ° to 80 ° with respect to the longitudinal centerline. The action of the traction force is actually installed on the longitudinal center line, (a) when the bucket is coupled to the vertical extension bank, only one tooth of the longitudinal center line eliminates the crowding of the bucket and avoids slewing, (b) The bucket moves further forward when only one tooth on the longitudinal centerline of the bucket is first engaged with the boulder The face boulder is moved to its center to prevent slewing of the bucket, and (c) when the bucket penetrates the ground and reveals tipping, the bucket weight acts on the teeth farthest from the longitudinal centerline to increase penetration. Dragline bucket, characterized in that.