JPH0596149U - Crusher equipment in excavator - Google Patents

Abstract

(57) [Summary] [Purpose] In an excavator that takes in excavated pieces from the suction port provided in the excavation part and sucks and conveys them through the piping system, crushes coarse excavated pieces and prevents clogging of the piping system. A screen 27 is provided in a fixed suction port 10 in the bucket wheel 6, a partition wall 26 is provided in the suction port 10, a scraper 28 is provided in a rotating cylindrical portion of the bucket wheel 6, and front and rear walls of the suction port 10 are provided. 24 and the partition wall 26 are provided with slits 30 through which scrapers 28 cross each other, and the coarse excavation shear captured by the screen 27
Scraped by scraper 28, scraper 28
A crusher device that is sandwiched and crushed when passing through the slit 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a crusher device which is provided in an excavator that takes in excavated pieces of excavated soft rock, stones, earth and sand, etc. from a suction port and crushes coarse excavated pieces taken in the suction port. ..

[0002]

[Prior Art]

 As an example of an excavator equipped with a function of excavating soft rock, etc., and carrying out excavated fragments of soft rock, stone, earth and sand (hereinafter referred to as excavation shear), a bucket wheel type underwater excavator is shown in Figs. Shown in. FIG. 5 shows the side surface, and FIG. 6 shows the plane.

In FIGS. 5 and 6, reference numeral 1 denotes a frame that constitutes a vehicle body, and crawlers 2 for traveling are provided on both sides of the frame. A revolving table 3 and a slurry pump 4 are arranged on the frame 1. A rudder 5 extending forward is attached to the turning table 3, and a bucket wheel 6 for excavating soft rock is attached to a tip end of the rudder 5. The bucket wheel 6 is driven and rotated. The rudder 5 is rotated up and down by a ladder up / down cylinder 7, and when the swivel table 3 is swung by a ladder swivel cylinder 8, the rudder 5 is also swung. .. In the bucket wheel 6, an opening is provided in a cylindrical portion to which a large number of buckets 9 are attached. A suction port 10 is provided in the cylindrical portion, and the suction port 10 is connected to the slurry pump 4 by a pipe 11.

In the excavation work by this excavator, the bucket wheel 6 is driven and rotated, and the ladder upper and lower cylinders 7 are adjusted to set the soft rock to be excavated at a predetermined position, followed by the ladder turning cylinder. The bucket wheel 6 is rotated horizontally by 8 to excavate the target soft rock.

After turning right or left, the crawler 2 advances the excavator to move the bucket wheel 6 forward, and the bucket wheel 6 is rotated again in the same manner as described above. In this way, by repeatedly turning and moving the bucket wheel 6 forward, the bucket 9 excavates the soft rock ahead.

The excavated shredder is taken into the bucket 9, and flows from the opening of the bucket wheel cylinder into the suction port 10 together with water by the action of both gravity and the suction force of the slurry pump 4. , And is transported to the water through the pipe 11.

[0007]

[Problems to be solved by the device]

 In the above-mentioned excavator, if the soft rock excavation excavated by the bucket wheel 6 is crushed into small pieces, it can be transported to the smooth without being clogged with the suction port 10 or the piping system. Depending on the type, there is a case where a large mass is mixed in with the excavation, and in that case, blockage may occur during transportation from the suction port 10 to the slurry pump 4.

In order to prevent such a problem, it is necessary to crush a large block in front of the suction port 10, but it is not possible to provide a crushing mechanism in front of the suction port 10 due to the structure of the excavator. It was impossible in terms of pace and power.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a large number of excavating tools are provided around a cylindrical portion that is driven and rotated, and a piece of excavation excavated by the excavating tool is fixed in the cylindrical portion. In an excavator that is taken into the mouth and sucked out by a pump through a pipe, a screen that captures coarse excavated pieces is provided in the suction port, while a scraper is provided inside the cylindrical part and provided in the suction port. A crusher device was constructed by providing slits through which the scraper intersects and passes through the partition wall and the suction port wall surface.

[0010]

[Action]

 In the above device, a large one of the excavated pieces taken into the suction port is captured by the screen. The trapped excavated material is scraped up by a scraper and crushed when the scraper passes through the partition of the suction port and the slit in the wall surface. The excavated pieces that have been crushed into small pieces pass through the screen and are carried out by suction.

[0011]

【Example】

 Next, an embodiment of the crusher device according to the present invention will be described with reference to the drawings. FIG. 1 shows a partial cross-sectional side view of a bucket wheel part of an embodiment in which the present invention is applied to a bucket wheel excavator, and FIG. 2 shows a cross section taken along the line AA. ..

In this embodiment, the construction of the excavator itself is the same as that shown in FIGS. That is, the rudder 5 is swung and raised and lowered by the turning cylinder 8 and the up-and-down cylinder 7. A rotary shaft 21 is projected from a side surface of a tip portion of the ladder 5, and a cylindrical portion 22 of the bucket wheel 6 is integrally attached to the rotary shaft 21. The rotary shaft 21 is driven and rotated by a drive system incorporated in the ladder 5.

A large number of buckets 9 are provided as an excavator on the outer peripheral surface of the cylindrical portion 22, and an opening 23, which is an intake for excavation, is provided in the cylindrical portion 22 in each bucket 9. The tip of the bucket 9 has teeth for excavation. On the other hand, in the cylindrical portion 22, a suction port (suction mouth) 10 that opens upward is fixedly provided. The suction port 10 is integrally attached to the tip of a pipe 11 connected to the slurry pump 4, and is fixed by being supported by the ladder 5 together with the pipe 11.

The suction port 10 is composed of front and rear walls 24 on the front and rear sides of the bucket wheel 6 in the rotation direction, side walls 25 on both sides, and a partition wall 26 partitioning the inside of the bucket wheel 6 in the front and rear directions. A screen 27 for catching a large excavation shear is provided in the lower portion of the suction port 10. That is, of the excavated sludge, a size that does not cause the inside of the pipe 11 to be blocked passes through the screen 27, and a larger size is captured on the screen 27.

On the other hand, a scraper 28 is provided on the inner peripheral surface of the cylindrical portion 22 of the bucket wheel 6 so as to project inward. As shown in FIG. 4, the tip of the scraper 28 is provided with a highly flexible blade 29 for crushing the shaving. In this embodiment, the scrapers 28 are provided in two places at two places. Slits 30 are provided on the front and rear walls 24 and the partition wall 26 of the suction port 10 in correspondence with the scraper 28. That is, the scraper 28 can pass through the suction port 10. FIG. 3 shows a slit 30 provided in the partition wall 26. A rubber plate 32 is attached to the inner surfaces of the front and rear walls 24 and one surface of the partition wall 26 to close the slit 30 and prevent the excavation shear from passing through the slit 30. Of course, the rubber plate 32 permits passage of the scraper 28.

Next, the operation of the crusher device will be described. The tip of the bucket 9 excavates soft rock by swinging the rudder 5 left and right while driving the bucket wheel 6 to rotate (in the direction of the arrow in FIG. 1). The excavated soft rock enters the bucket 9 as excavation shear, is carried to the upper position by the rotating action, and is taken into the suction port 10 by the action of gravity and the suction force from the suction port 10.

Among the excavated sludge taken in the suction port 10, those having a small particle size pass through the screen 27 and are sucked and conveyed in the pipe 11, while the coarse excavated sludge is caught by the screen 27. The coarse excavated shear trapped on the screen 27 is scraped off by the blade 29 at the tip of the scraper 28 that rotates together with the cylindrical portion 22 of the bucket wheel 6 and collected in the rotational direction.

When the scraper 28 passes through the partition wall 26 and the slit 30 of the rear wall 24, the scraped coarse excavation slide is crushed by being sandwiched between them. The crushed and shredded excavation slide passes through the eyes of the screen 27 and is sucked and conveyed in the pipe 11.

Since a rubber plate 32 that closes the slit 30 is attached to the inside of the front and rear walls 24 of the suction port 10, the slit 30 is in a closed state when the scraper 28 is not passing therethrough, and thus the excavation slippage is prevented. It does not leak out of the suction port 10.

Although the above embodiments apply the present invention to a bucket wheel type excavator, applicable excavators are not limited to this. Further, the number of partition walls 26 in the suction port 10 is not limited to one, and the number and shape of the scrapers 28 are not limited to those in the embodiment, and various changes can be made.

[0021]

[Effect of the device]

 According to the crusher device for the excavator according to the present invention, since the mechanism for crushing the coarse excavated piece is provided in the suction port, the coarse excavated piece does not enter the pipe and the clogging of the pipe system is prevented. it can. In addition, since the crushing mechanism is installed in the suction port, there is no need to increase the size of the excavator or change the structure drastically.Because the power of the rotating part of the excavator is used as crushing power, new power is required. There is no need to provide a source.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of an entire crusher device according to an embodiment.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a partial perspective view of a suction port.

FIG. 4 is a partial perspective view of a scraper.

FIG. 5 is a side view of the bucket wheel type excavator.

FIG. 6 is a plan view of a bucket wheel type excavator.

[Explanation of symbols]

 1 frame 2 crawler 3 swivel table 4 slurry pump 5 ladder 6 bucket wheel 7 ladder up / down cylinder 8 ladder swivel cylinder 9 bucket 10 suction port 21 rotating shaft 22 cylindrical part 23 opening 24 front and rear wall of suction port 25 side wall of suction port 26 Partition wall of suction port 27 Screen 28 Scraper 30 Slit 32 Rubber plate

Claims (1)

[Scope of utility model registration request] 1. A large number of excavating tools are provided around a cylindrical portion that is driven and rotated, and the excavated pieces excavated by the excavating tool are taken into a suction port that is fixedly provided in the cylindrical portion, and pumped through a pipe. In an excavator that is sucked out by
While providing a screen for capturing coarse excavated fragments in the suction port, a scraper is provided inside the cylindrical portion, the partition wall provided in the suction port and the slit through which the scraper intersects the wall surface of the suction port. A crusher device for an excavator characterized by being provided.