JP2003182824A - Chute for carrier device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chute for a carrier device simple in structure, generating less noise and with long life by improving a forked chute used to remove crushed rocks carried by a carrier device of a belt conveyor, etc., and massive matters of metal, etc., selected by a metal selector (carrying matters) to a collecting container, etc., from a discharge port of the carrier device. <P>SOLUTION: This chute for the carrier device is furnished with a reception port in which the carrying matters are dropped from a carrier end part of the carrier device of the belt conveyor, etc., two discharge passages forked at a lower part of the reception port and a change-over damper provided on a forked part of the two discharge passages, to open one of the discharge passages and close the other by its revolution and is provided with sheathing boards projected from its damper surface and to make the dropped carrying matters reside on a surface of the change-over damper on both front and back surfaces of the change-over damper. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushed rock conveyed by a conveyor such as a belt conveyor, a lump of metal or the like sorted by a metal sorting machine. The present invention relates to a chute used for transferring a conveyed material) from a discharge port of the conveying device to a collection container or the like. [0002] Crushed rocks and lumps such as metals sorted by a metal sorter are conveyed to a predetermined position by a belt conveyor and then stored in a predetermined collection container. A chute for transferring the lump transported by the conveyor into a predetermined container is provided at an outlet of the belt conveyor. [0003] A bifurcated chute is sometimes used as the above-mentioned chute in order to sort and store a lump in a different container. This type of bifurcated chute is provided with a switching damper for switching the discharge route of the lump discharged from the belt conveyor. This switching damper is 1
In general, one end of the discharge path is closed and the other end of the discharge path is opened by pivotally supporting the end portion. [0004] Various types of switching dampers are known. FIG. 3 shows a switching damper for a bifurcated chute, which has been widely used in the past. A conveyed object conveyed by a belt conveyor 101 as a conveying device is dropped into a bifurcated chute 103 from an outlet of the belt conveyor. In the forked chute, a switching damper 110 whose lower end is pivotally attached to the crest 105 of the forked portion of the forked chute so as to be rotatable about an axis is provided,
By tilting the switching damper to the right or left, one passage 106 is opened and the other passage 106 'is closed. In the conventional bifurcated chute with a switching damper, the conveyed material dropped from a belt conveyor as a conveying device temporarily falls on the surface of the switching damper and is fed into an open passage along the inclined surface. However, there is a noise problem that a loud impact sound is generated because a lump of conveyed material falls on the surface of the switching damper, and the surface of the switching damper where the conveyed material collides is severely worn and damaged, and the problem is that the life is short. There was a point. As a countermeasure against wear of the switching damper,
A liner was also attached to the collision surface of the switching damper, but it was worn out immediately if there was a protrusion, and even a non-projected countersunk bolt was quickly consumed, so the method of attaching the liner was difficult. There was a point. As a solution to the problem of the conventional switching damper, as shown in FIG.
Each of them has dampers 202 and 202 'interlocked with each other so that one is opened when the other is closed, and the closed damper and the peak portion 203 of the chute form a block-like mass falling from the belt conveyor. A structure in which a stay space portion (dead stock portion) 210 in which an object stays is formed has been proposed (see Japanese Utility Model Laid-Open No. 55-90632). According to this device, the lump falling from the belt conveyor falls on the lump remaining in the dead stock section 210 and does not directly collide with the surface of the damper, so that noise generation and early abrasion can be prevented. However, the one disclosed in Japanese Utility Model Laid-Open No. 55-90632 has a problem in that two dampers are required, and the structure of a switching means for opening and closing them in conjunction with each other becomes complicated. . On the other hand, as another device provided with a dead stock portion in a switching damper, there is a head chute described in Japanese Utility Model Laid-Open Publication No. 63-18410. This head chute has a dead stock portion formed at a position perpendicular to the plate surface of the switching damper inside a switching damper whose lower end is pivotally supported. In a normal use state where the switching damper is in an upright state, The conveyed object dropped from the conveyor collides with the inner surface of the switching damper and the dead stock portion, and is then guided to one of the paths of the chute. Further, by inclining the switching damper and bringing the tip end thereof close to the head portion of the belt conveyor, the conveyed article slides on the outer surface of the switching damper and is sent to the other passage. However, in this apparatus, since the dead stock portion is provided only on one surface (inner side) of the switching damper, when the path is switched to the opposite side, the conveyed material is not provided on the outer surface of the switching damper. There is a problem that the outer side surface is easily worn down because it falls directly on the upper side. Further, even when the switching damper is used in an upright state, the conveyed material dropped from the belt conveyor directly collides with the inner surface of the switching damper, so that a collision sound is generated and the inner surface is severely worn. There is. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the conventionally known bifurcated chute switching damper, and has an object to reduce noise and hardly cause wear and damage. In order to solve the above problems, the present invention employs the following configuration. That is, the transfer device chute according to the present invention is a receiving port into which a conveyed object is dropped from a transfer end of a transfer device such as a belt conveyor, two discharge passages branched below the receiving port, and the two discharge paths. A switching damper that is provided at a branch of the discharge passage and opens one of the discharge passages by rotation thereof to close the other of the discharge passages. It is characterized in that a dam plate is provided for retaining an object on the surface of the switching damper. [0010] This shoot is a bifurcated shoot,
A rotary switching damper that pivots left and right to open one discharge passage and closes the other discharge passage is provided at the bifurcated branch portion, and lump masses are retained on both surfaces of the switching damper. Since the dead stock part which can be used is provided, when using any of the discharge passages of the forked chute, most of the lump dropped from the transfer device falls on the lump remaining on the switching damper, A direct collision with the switching damper is avoided. For this reason, the generation of the collision noise is small, and the wear and damage of the switching damper are small. Embodiments of the present invention will be specifically described below with reference to the drawings. The transfer device chute 1 is a bifurcated chute having one receiving port 2 and two discharge passages 3 and 4, and a ridge 5 is formed at a branch portion inside the chute. Also, at the receiving port 2, a discharge section 7a of a belt conveyor 7 as a transport device is located. A switching damper 10 is rotatably mounted on a shaft 11 at the top of the peak 5 of the branch portion. The switching damper 10 is formed as a plate having a size capable of closing the passages 3 and 4 of the bifurcated chutes, and a lower part of the damper plate 13 projecting in a direction substantially perpendicular to the damper surface.
14 are provided. At the outer end of the shaft 11, a rotating device (not shown) for rotating the shaft forward and backward within a predetermined range is provided. This rotating device is, for example, a shaft 1
The arm 1 is provided with its arm protruding in the radial direction and is manually rotated by driving means such as a fluid cylinder or an electric motor or manually. When the chute 1 is used, one of the passages 4 (3) is closed by the switching damper 10 and the other passage 3 (3) is closed.
Open (4). FIG. 2A shows a state where the left passage 3 is opened and the right passage 4 is closed. In this state, the lumps B dropped into the receiving port 2 from the end of the belt conveyor (transport device) 7 are transferred to the surface of the switching damper 10 or the dam plate 1.
3, since the damper 10 and the weir plate 13 form a substantially triangular concave dead stock portion 15 in a side view, the initially dropped mass fits into the dead stock portion 15 and stays there. I do. Further, the subsequent lump is once dropped on the accumulated lump, falls into the passage 3, and is discharged from the lower end of the passage. As described above, it is possible to avoid the collision between the aggregates and the direct collision with the switching damper and the weir plate.
Damage is prevented. Similarly, when the switching damper 10 is rotated from the above state and the right passage 4 is opened and the left passage 3 is closed, as shown in FIG. Most of the objects B are on the back surface of the damper 10 and the weir plate 14.
However, as described above, since the lump that has dropped at the beginning stays in the triangular concave dead stock portion 16 formed by the damper 10 and the weir plate 14, the subsequent lump B is prevented from falling onto the staying mass and directly colliding with the damper 10 and the weir plate 14. Therefore, also in this case, intense collision noise, early wear and damage of the switching damper, and the like are prevented. As described above, the transfer device chute according to the present invention is provided with dam plates on both sides of the switching damper for switching the path of the bifurcated chute, and whichever path is selected. Since a dead stock portion in which the lump stays is formed by the switching damper and the dam plate, the lump dropped from the transport device falls on the lump staying in the dead stock portion, and the switching damper is directly moved. Since the collision with the damper and the dam plate is prevented, generation of a violent collision sound, early wear and damage of the switching damper, and the like can be effectively prevented. The structure of this chute is simple and can be robust.

[Brief description of the drawings] FIG. 1 is a cross-sectional view illustrating an example of a chute according to the present invention. FIG. 2 is an explanatory diagram of its usage. FIG. 3 is a cross-sectional view of a conventional chute. FIG. 4 is a cross-sectional view of the improved example. [Explanation of symbols] 1 Chute for transfer device 2 entrance 3 discharge passage 4 discharge passage 5 Yamabe 7 Belt conveyor (transportation device) 10 Switching damper 13 Weir plate 14 Weir board B Mass (Conveyance)

Claims (1)

Claims: 1. A receiving port into which a conveyed object is dropped from a conveying end of a conveying device such as a belt conveyor, two discharge passages branched below the receiving port, and the two discharging paths. A switching damper that is provided at a branch of the passage and opens one discharge passage by rotation thereof to close the other discharge passage. A chute for a transfer device, wherein a weir plate is provided for staying on a surface of the switching damper.