Support unit with adjustable trimming pads for electric pit excavator

FIELD: construction.

SUBSTANCE: support unit comprises the main body, having an upper end and a lower end, a hole for a shaft of a loading mechanism, stretching via the lower end of the specified main body, and two holes arranged at the distance from each other for eccentric fingers located in the specified upper end. Besides, the support unit comprises two eccentric fingers, every of which is placed into one of the specified holes, an accessory for synchronous rotation of the specified eccentric fingers and a cast item having an upper end and a lower end. At the same time on the specified lower end of the specified cast item there are upper trimming pads installed, being arranged as resting against the upper part of the bucket handle. The support unit also comprises two holes to receive threaded tubes located at the distance from each other in direction of handle displacement, two threaded tubes, every of which is inserted into one of the specified holes for receiving the tube, an accessory for rotation of the specified tubes and an accessory for fixation of the specified tubes. Besides, on each of the specified threaded tubes there are trimming pads installed.

EFFECT: reduced labour intensiveness and time for maintenance and extended service life of support unit assemblies.

12 cl, 7 dwg

 

BACKGROUND of the INVENTION

The present invention relates to excavators, and more exactly, to excavators with bucket for digging earthen material. More precisely, the present invention relates to a supporting blocks, which support the handle or lever of the bucket.

There are many known devices for moving earth or similar devices. In a typical equipment for earth moving or excavators prior art uses a bucket or shovel, which at the end is arranged to move the lever to draw the earthen material from the horizontal or vertical layers. In order to capivate in developed surface, the bucket is usually equipped with sharp teeth. In addition, the bucket contains a cavity for collecting the removed thus material. When the earthen material is inside the bucket, the arm is usually moved to another location to transfer material. The material is usually discharged into a dump truck, conveyor, or just another bunch of material.

In large electric rope shovels for mining operations is used digging device containing a fixed shaft and a design representing a combination of stick and bucket, which is installed on the boom and which actively Protal the scarfing and rises in the reservoir to fill the bucket. As shown in figure 2, the handle 26 includes two racks 68, which pass on each side of the boom 22. The handle 26 has a rack 62, attached to the underside of each rack 68. Horizontally through the bolt 22 also has a shaft 66 of the loading mechanism. To the shaft 66 of the loading mechanism slots 74 attached two gears 70. Located on the rack 68 of the handle of the rake 62 gears splines 74 gears. The motor and gear mechanism (not shown) rotates the shaft of the loading mechanism and the gear wheel, thereby causing the handle and the rack to crawl and move from the arrows. On the shaft 66 of the loading mechanism has two support block 78, and they are used to hold the handle 26 in proper position during operation of the excavator.

During operation, the handle feels efforts in vertical and horizontal directions. The vertical force is the result of a pushing force between being on the handle gear rack and the gear wheel pressure mechanism, as well as from the loads encountered during the digging. Horizontal force caused by the rocking of the machine, digging loads and due to inertia. The appointment of the blocks is to withstand these forces and to retain the handle in the desired position.

For best performance between the handle and the base unit should the n to be only a small gap. In the ideal case, this gap has a value between 0,3175 cm (0.125 inch) and 0,635 cm (0.25 inch). If the gap increases even more, the system begins to suffer from two problems. First, the gaps between the component parts contribute to high shock loads during movement of these parts. Secondly, there is a big gap at the top of the handle allows located on the handle has a rack and a toothed wheel pressure mechanism to separate from each other. This greatly increases the load on the tooth, resulting in broken teeth transmission, rough work and increased noise.

While the support unit provides support for the handle, the handle is often pushed forward or play back in order to delve into the reservoir or to rotate the excavator. The relative movement between the components causes wear on the surfaces of the support block, which are in contact with the handle. Thrust blocks are large structures; therefore, it is not suitable to replace the reference block is entirely due to its wear and tear on a pair of surfaces. For this reason, part of the reference block are replaceable wear pads. Replace the wear pads are much less expensive and simpler than a basic block. After wearing pads reach a certain thickness, select the shift and establish new ones. This preserves the integrity of thrust blocks.

Wearing pads for thrust blocks must be adjusted on an ongoing basis to maintain the proper gap between the components. Instead of throwing away the wear pads at each adjustment, reinstall them to increase their service life. Between the wear plates and the base unit is installed metal strip 164 and 168, as shown in figure 3, to maintain the proper operating clearance. This procedure is to adjust clearance works, but takes time and is difficult. Strip large, but very thin, which makes dealing with them. Moreover, it is inconvenient to work between the handle and the base unit. This area is covered with grease and has poor access and narrow passages used to reach this area, may not provide ideal access to wearing pads. Since the regulation of the wearing plates is difficult, it often does not perform or do not perform as often as necessary.

The INVENTION

One of the purposes of the present invention is to create a support block with an easier way to regulate the wearing plates by reducing the time required for the implementation of the regulation.

Another objective of the present invention is the creation of regulatory support block, which performs the same function as the existing support units, but does not use shims and has the potential to reduce the maintenance time on the regulation of gaps between components.

Another objective of the present invention to provide regulatory support unit, which can have a significant positive effect on the service life located on the handle of the rack and the service life of gears located on the shaft of the loading mechanism.

According to this invention, provides the reference block containing a main body having a hole for the shaft of the loading mechanism, passing through the lower end of the main body, and a hole for the eccentric finger located at the upper end of the main body, the Cam finger is inserted into the hole for the eccentric finger located at the upper end of the main body, and bearing wear pads. Bearing wear plates has a hole for receiving a finger, while the Cam finger is placed in the hole for reception of a finger. Wear pads mounted on the lower end of bearing wear pads and executed resting in the upper part of the handle of the bucket.

The present invention also provides the reference block containing the main body, having an upper end and a lower end, the main body has a hole for the shaft of the loading mechanism, passing through the lower end of the main body. The jacket also has a hole for receiving the tube in the main body, located between the upper end of the main body and the lower end of the main body, and a tube inserted in a hole for receiving the tube. Also has a device for extension tube, a device for securing the tube in the hole for receiving the tube and the wear plate mounted on the end of the tube.

Specialists will be obvious other features and advantages of the invention, with a careful study of their subsequent detailed description, claims and drawings in which the same item numbers are used to designate similar parts.

BRIEF DESCRIPTION of DRAWINGS

Figure 1 shows a vertical side view of an excavator, illustrating an embodiment of the present invention.

Figure 2 shows a cross-section of the driving pressure mechanism comprising a support block and a rack and pinion, shown in figure 1, taken along line 2-2 depicted in figure 1.

Figure 3 shows a perspective view of the support block level technology.

Figure 4 shows a perspective view of the proposed reference block.

figure 5 shows a side view of the support block, shown in figure 4.

Figure 6 shows a cross-section of the bearing unit shown in figure 5 taken along line 6-6 depicted in figure 5.

7 shows a perspective view of the rear part of the support block shown in figure 4.

Before embodiments of the invention will be described in more detail, it should be emphasized that the invention in its application is not limited to the elements of construction and arrangement of parts set forth in the following detailed description or illustrated in the drawings. The invention may have other options implementation and may be implemented or carried out in various ways. Also it should be understood that the phraseology and terminology used herein, are adopted with the purpose of description and should not be construed as limiting. The use of the terms "including" and "comprising", and their variants used in this document, is intended to cover listed after them items and cash equivalents, as well as additional items and equivalents. The use of the term "comprising" and its variants in this document is intended to only cover the items listed thereafter and equivalents.

A DETAILED description of the PREFERRED OPTIONS ISSUE THE LOG INVENTIONS

Figure 1 shows the excavator 10. It should be understood that the present invention can be used in other known in the art excavators and excavator 10 is made only as an example of such an excavator. The excavator 10 includes a frame 14, which is the support to move along the ground. More precisely, the frame 14 is carried out to rotate the housing, mounted on a movable base, for example, on tracks 18. Upward and outward from the frame 14 is held stationary by the arrow 22. The boom 22 is set to the handle of the bucket 26 to move relative to the drive pressure mechanism 30 comprising a support block and a rack and pinion for rotation relative to the boom 22 around a generally horizontal axis 32 of the bucket arm, and progressive (without turning) movement of the handle 26 of the bucket relative to the boom 22. The handle of the bucket 26 has a front end 34. On the front end 34 of the handle 26 of the bucket traditional way has bucket 38. The outer end 42 of the boom 22 has a pulley 46 and the pulley 46 is stretched coming from installed on the frame 14 of the drum 54 of the lifting winch cable or rope 50, and the rope attached to the bucket 38.

The proposed reference block is shown in figure 4. New support block 82 is a replacement bearing blocks 78 of the prior art (see figure 2 and 3). The support block 82 contains the main is orpus 86, two eccentric finger 90, fixture, mounted on main body 86 for synchronous rotation Cam fingers 90, bearing wear plates, or molded product 94, and the upper wear pads 100 mounted on the lower end 104 (see Fig.6) cast articles 94 and executed rests on the upper surface 108 (see figure 2) of the handle 26 of the bucket. More precisely, the main body 86 has an upper end 112 and a bottom end 114, and a hole 118 to the shaft of the loading mechanism, passing through the lower end 114 of the main body. Two holes 116 for Cam fingers separated by some distance on the upper end 112 of the main body 86, and each of the Cam fingers 90 are placed in one of the holes 116 for Cam fingers.

More precisely, the molded product 94 has an upper end 118 and a lower end 120, and two holes 122 for receiving the fingers. The molded product 94 takes on one of the Cam fingers 90 in each of the holes 122 for receiving a finger.

The upper wear pads 100 are attached to the cast product 94 by bolts (not shown). This molded product 94 is attached to the support block 82 two large eccentric fingers 90. Eccentric finger 90 (see Fig.6) is a finger, which has two sections 91 and 92 with different diameters, which are not contentionscope as the gap between the upper surface 108 of the handle 26 and the upper wear plate 100 is increased due to wear, Cam fingers 90 are slightly rotated. As the fingers 90 eccentric, the rotation causes the Cam action between the fingers 90 and molded product 94. This Cam action changes the clearance between the upper surface 108 of the handle 26 and the upper wear plate 100. When there is a proper gap, eccentric fingers 90 is fixed in place until the next regulation.

More specifically, a device installed on the main body 86 for simultaneous rotation of the Cam fingers 90, contains each finger 90, having a large sprocket 136 (see Fig.7)installed on one end of the finger, on one side 140 of the main body 86, a small double sprocket 144 with a groove (shown in Fig.7. a double image)mounted rotatably on one side 140 of the main body 86, the first closed circuit 148 transmission, geared around one of the large sprockets 136 and a small sprocket 144, and a second closed circuit 148 transmission, geared around other big stars 136 and small sprocket 144, so that when rotated the small sprocket 144 and chain move, then rotate synchronously large sprocket 136.

More specifically, each big sprocket 136 is attached to a corresponding one of the outer surfaces 152 of each Cam finger 90, as shown in Fig.7. A small star is stocco 144 configure regulating finger 154. When adjustment is necessary, the large sprocket is removed from the fixing (locking mechanism not shown) and rotate the regulating finger 154. This rotation causes the chain 148 to rotate both large stars, which, in turn, rotate both eccentric finger 90 together. The gap between the handle and the upper wear plate 100 is changed due to the Cam action of Cam fingers 90 molded product 94.

The support block 82 also includes two threaded openings 128 for receiving tubes, spaced apart in the direction of horizontal movement of the handle. Holes 128 pass through the main body 86 between the upper end 112 of the main body and the lower end 114 of the main body. Block 82 also includes two threaded tube 124, each of which is placed in one of the holes 128 for receiving the tubing, the device for turning the tubes 124 and a device for fixing a tube 124 in the openings 128 for receiving the tubes. The support block 82 also includes two lower wear pads 132, each of which is installed on the end of one of the tubes 124.

More specifically, when the lower wear plate becomes thinner due to wear, then remove the locking key 156 and rotates the threaded tube 124 until then, until you reach the proper working gap. Once this gap is reached, again set the t blocking key 156.

This bearing block 82 has a number of differences from the previous reference block 78. In existing basic blocks 78 was used wearing pads, which are regulated by the spacers. In the bearing block 82 with the Cam regulation to regulate the clearance for the upper wear pads 100 used Cam fingers 90, while the lower wear pads 132 is threaded tube 124. For the implementation of the regulation does not use any gaskets. Upper wear pads on existing support blocks 78 can only be regulated independently. In the bearing block 82 with the Cam regulation of both the upper wear pads 100 regulate at the same time. This is due to the regulatory element, consisting of a chain and sprocket attached to both Cam the fingers 90.

Proposed regulatory support unit has the potential to reduce the maintenance time required for the regulation of the wearing plates. This occurs for several reasons. Firstly, no need to add or remove the gasket. Secondly, both the upper wear pads attached to the cast product and regulate at the same time. Thirdly, all regulation is performed with the outer sides of the support blocks to ora provides easy access to all equipment.

Various characteristic features of the invention set forth in the following claims.

1. Support unit, comprising: a main body having an upper end and a lower end, a hole for the shaft of the loading mechanism, passing through the lower end of said main body, and a hole for the eccentric finger located at the specified upper end; an eccentric finger inserted in the specified hole for the eccentric pin and having two sections that are not concentric; bearing wear plates having an upper end and a lower end and an aperture for receiving a finger, with the specified Cam finger is inserted in the specified hole for receiving a finger; wear plates installed on the specified lower end bearing wear linings and executed resting in the upper part of the handle of the bucket.

2. The support block according to claim 1, wherein said Cam finger made with the possibility of rotation.

3. The support block according to claim 2, in which the gap between the handle and the wear plate is changed due to the Cam action of Cam finger.

4. The support block according to claim 2, additionally containing a large sprocket mounted on one end of a specified eccentric finger on one side of said main housing, small star is the point, mounted rotatably on one side of the main body, and a closed circuit transmission, geared around these large stars and small stars, so that when rotated the small sprocket and the chain moves, the large sprocket rotates and, in turn, rotates the specified eccentric finger.

5. Support unit, comprising: a main body having an upper end and a lower end, a hole for the shaft of the loading mechanism, passing through the lower end of said main housing; a first hole for receiving a tube, made in the main body and located between the specified upper end and a lower end; the first tube, placed in a designated hole for receiving the tube and having an end; a device for extension specified tube until then, until you reach the proper working gap; a device for fastening specified tube in the specified hole for receiving the tube; the lower wear pad mounted on the end mentioned tube, and the specified hole for receiving the tube and this tube is threaded.

6. The support block according to claim 5, in which the specified device for securing the tube contains a removable locking key.

7. The support block according to claim 5, further containing a second hole for receiving a tube, made in the main body and located between the specified upper end and a lower end, a second tube placed in the specified hole for receiving the tube and having an end, a device for the extension of the specified second tube until then, until you reach the proper working gap, and a device for fastening specified second tube in the specified second hole for receiving the tube.

8. The support block according to claim 7, in which the specified first hole for receiving the tube and the specified second hole for receiving tubes spaced apart in the direction of horizontal movement of the handle.

9. The support block according to claim 7, further containing lower wear pad mounted on the specified end of the second tube.

10. The support block according to claim 7, in which the specified device for securing the tube contains a removable locking key.

11. Support unit, comprising: a main body having an upper end and a lower end, a hole for the shaft of the loading mechanism, passing through the lower end of said main body, and two located at a distance from each other holes for Cam fingers located in the specified upper end; two eccentric finger, each of which is placed in one of these holes for the eccentric finger; the device installed on a specified main body for simultaneous rotation of these eccentric fingers; cast Adelie, having a top end and a bottom end, and two holes for the reception of the fingers, each of which is inserted into one of these two eccentric fingers; the upper wear plates installed on the specified lower end of the specified cast products and completed resting in the upper part of the handle of the ladle; two holes for receiving threaded tubes spaced from each other in the direction of movement of the handle and passing through the main body between its specified upper end and a lower end; two threaded tubes, each of which is inserted into one of these holes for receiving the tube; a device for turning these tubes; a device for fixation of these tubes in said holes for receiving the tubes; lower wear pads, each of which is installed on the end of one of these tubes.

12. The reference block of claim 11, in which the specified device is installed on the specified main body for simultaneous rotation of the Cam fingers, contains a large sprocket mounted on one end of each of the two eccentric fingers on one side of said main body, a small sprocket mounted for rotation on the specified one side of said main body, a first closed API, geared around one of these big stars and the small sprocket, and a second closed circuit, geared around another of these big stars and the small sprocket, so that when rotated the specified small sprocket and move the indicated circuit, synchronously rotate these large gears.



 

Same patents:

FIELD: construction.

SUBSTANCE: snap-change device for fixation and forced leading, with automatic connection of tools with force closure to bearing implements and excavators includes one part of snap-change device, for instance fixture, where aligning disks are attached on fishing pins or in comparable centre of rotation across their axis. Aligning disks, at least partially, have curved, angular or straight peripheral line, which is distanced differently from axis of fishing pins. On mating part of snap-change device, for instance tool holder, there is at least one control plate attached, which enters zone of aligning disk motion, and curved peripheral line of aligning disk moves along its surface in process of entering. Shape and location of aligning disk relative to control plate are selected with the possibility of complete force or geometrical closure of snap-change device due to rotation around fishing pins only when they have achieved the lowest point in fishing hook.

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8 cl, 7 dwg

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Quick hitch // 2235829
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The invention relates to a safety device for high-speed towed device designed for securing the working tool at the end of the capture loader or similar machine

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Forklift // 2143519
The invention relates to the field of earth-moving machines, equipped with replaceable working equipment

The invention relates to the field of machines for performing loading, digging and other work associated with lifting, and with the development and movement of soil, namely, to machines of the type shovel loaders

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5 cl, 2 dwg

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8 cl, 6 dwg

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6 dwg

FIELD: construction.

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8 cl, 7 dwg

FIELD: construction.

SUBSTANCE: support unit comprises the main body, having an upper end and a lower end, a hole for a shaft of a loading mechanism, stretching via the lower end of the specified main body, and two holes arranged at the distance from each other for eccentric fingers located in the specified upper end. Besides, the support unit comprises two eccentric fingers, every of which is placed into one of the specified holes, an accessory for synchronous rotation of the specified eccentric fingers and a cast item having an upper end and a lower end. At the same time on the specified lower end of the specified cast item there are upper trimming pads installed, being arranged as resting against the upper part of the bucket handle. The support unit also comprises two holes to receive threaded tubes located at the distance from each other in direction of handle displacement, two threaded tubes, every of which is inserted into one of the specified holes for receiving the tube, an accessory for rotation of the specified tubes and an accessory for fixation of the specified tubes. Besides, on each of the specified threaded tubes there are trimming pads installed.

EFFECT: reduced labour intensiveness and time for maintenance and extended service life of support unit assemblies.

12 cl, 7 dwg

FIELD: machine building.

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EFFECT: higher efficiency.

15 cl, 6 dwg

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EFFECT: reliable connection.

4 cl, 5 dwg

FIELD: machine building.

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EFFECT: improved efficiency of operating tool performance, reduced wear between connection components.

20 cl, 10 dwg

Wear pad assembly // 2610480

FIELD: machine building.

SUBSTANCE: group of inventions relates to wear shoe assembly for installation on bucket-type working tools. Working tool wear pad assembly, contains edge with one or several holes made in it. Assembly contains wear-resistant pad, mounting bracket, made with possibility of attachment to wear-resistant pad, quick release pin for wear-resistant pad assembly attachment to working element edge and free coupling. Mounting bracket comprises one or several pairs of coaxial holes for pin. Free coupling is made with possibility of filling-in gap between one or several coaxial holes and pin. Road construction machine with working tool, containing edge with one or several holes made in it, as well as containing, at least, one wear pad assembly.

EFFECT: technical result is wear pad assembly installation so, that it can be quickly attached to working member in changeable manner.

13 cl, 5 dwg

Crane // 2621134

FIELD: transportation.

SUBSTANCE: crane (1) with at least one telescoping bracket (2) comprises a boom (3) and its extension (4) by means of a steering swivel (5) disposed on the boom extension (4), comprising two spaced-apart swivel pads (10), the working body (20) is fixed on the telescopic crane bracket (2), and hydraulic lines (6) lead from the boom (3) between the spaced-apart swivel pads (10) of the steering swivel (5) to the working body (20). In the end zone (41) of the boom extension (4), on which the steering swivel (5) is arranged, a guide (7) for the hydraulic lines (6) is provided, which guides them from the boom extension (4) to the zone (51) between the spaced-apart swivel pads (10) of the steering swivel (5). Fixing elements (8) for the hydraulic lines (6), between which the hydraulic lines (6) pass in the form of hydraulic hoses (9), are arranged on the boom (3) end (31) remote from the working body (20) and on the guide (7) end (71) remote from the working body (20).

EFFECT: crane improvement.

8 cl, 4 dwg

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