JPH1179378A - Ground conveyor floating device for unloader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend the life of a conveyor belt and to facilitate connection and disconnection of a belt floating body by matching a pass line of a belt floating frame with a pass line of a ground conveyor at the time when the belt floating frame is elevated up and down by an elevator and it is placed on a placing base. SOLUTION: A ground conveyor floating device 1 is constituted of a travelling frame 2 extending from an unloader, an elevator 3 installed on the travelling frame 2, an elevating frame 6 suspending a part such as a connecting ring 5 on an elevating rod 4 of the elevator 3, a hook driving mechanism 10 installed on the elevating frame 6, a suspending hook 20 free to drive by the hook driving mechanism 10, a belt floating frame 30 to be suspended by the suspending hook 20 and a placing base 40 to support the belt floating frame 30 at a stand-by position. Connection and disconnection of the elevating frame 6 are carried by the suspending hook 20 and the hook driving mechanism 10. Thereby, bending motion of a ground conveyor is eliminated, and it is possible to extend the life of a belt of the ground conveyor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an apparatus for partially floating a ground conveyor of an unloader.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 8-268527 discloses an "unloader ground transfer device" as one of devices for softly transferring a load from an unloader that continuously unloads bulk cargo from a hold to a ground conveyor. The characteristic operation of this device will be described with reference to the following drawings.

FIG. 7 is an operation view of a conventional unloader ground transfer device. The details are described in the above-mentioned publication, but in short, in (a), for example, ore 102... In the transfer of the ore 102, a part of the first ground conveyor 103 is lifted by the first belt floating body 105 to reduce the height difference between the two conveyors 101 and 103, so that the drop impact of the ore 102 is reduced. The first belt floating body 105 is integrated with the traveling body 106 of the unloader, and the unloader moves in the direction of the arrow according to the position of the hold, so that the first belt floating body 105 also moves in the direction of the arrow. I do.

On the other hand, the ore 102... Transferred to the first ground conveyor 103 is dropped from the end of the conveyor in the direction of the arrow. Similarly, the ore is dropped from the conveyor end of the second ground conveyor 111 in the direction of the arrow. For this purpose, a plurality of conveyors 103 and 111 such as a first ground conveyor 103 and a second ground conveyor 111 are arranged in series. However,
Since the first belt floating body 105 can only move laterally within the loop of the first ground conveyor 103, the following procedure is used to move the outlet conveyor 101 of the unloader to the second ground conveyor 111.

[0005] The traveling body 106 of the unloader is largely moved in the direction of the arrow so that the first belt floating body 105 faces the first mounting table 107.
6, the first belt floating body 105 is cut off, and the first belt floating body 105 is placed on the first mounting table 107. The first
The mounting table 107 does not interfere with the first ground conveyor 103. Only the traveling body 106 and the exit conveyor 101 are further laterally moved to reach the second mounting table 112, and the second belt floating body 113 mounted thereon is suspended. As shown in (b),
The ore 102 is softly transferred from the exit conveyor 101 to the second ground conveyor 111 while a part of the second ground conveyor 111 is floated by the second belt floating body 113. During this time,
The first belt floating body 105 remains mounted on the first mounting table 107.

[0006]

The height difference between the exit conveyor 101 and the ground conveyors 103 and 111 is small, so that the shock at the time of transfer is small and more preferable. However, it has been found that there are the following problems. First, it was found that the life of the conveyor belt was shortened because the first ground conveyor 103 bent in an S-shape before and after the first belt floating body 105. This bending occurs even in a state where the first belt floating body 105 is placed on the first mounting table 107 in a standby state. The same applies to the second ground conveyor 111.

[0007] Next, according to FIG. 3 of the above publication, the belt floating body side connecting member 35 is superimposed on the unloader side impact transmission rod 31, and the engaging pin 33 is inserted into both members to float the belt to the unloader side. It is a structure that can hang the body. Since the engagement pin 33 is advanced and retracted by the engagement pin advance / retreat device 32, the insertion and removal of the engagement pin 33 can be remotely controlled. However, in order to align the holes formed in both members and insert the engaging pin 33 into the holes, it is impossible to dimensionally check the holes. Such a fine adjustment means is indispensable, and it becomes an extremely expensive device, which is not practical.

Accordingly, an object of the present invention is to provide an apparatus for extending the life of a conveyor belt and for easily attaching and detaching a belt floating body (belt floating frame).

[0009]

In order to achieve the above object, a first aspect of the present invention provides a traveling frame that moves laterally with an unloader while supporting an exit conveyor of the unloader, and is mounted on the traveling frame so as to be able to move up and down via an elevator. An elevating frame, a hanging hook attached to the elevating frame, a hook driving mechanism for driving the hanging hook, a belt floating frame detachably suspended from the elevating frame via the hanging hook, and a pass line of the belt floating frame. A mounting table for supporting the belt levitation frame at a height substantially coinciding with the non-floating path line of the ground conveyor, and a ground conveyor levitation apparatus for an unloader are configured.

During standby, the belt floating frame is placed on the mounting table. At this time, since the path line of the belt floating frame coincides with the path line of the ground conveyor, the bending operation of the ground conveyor is eliminated, and the life of the belt of the ground conveyor is extended. When lifting the belt,
The belt levitating frame is hung by the hanging hook, and the elevator is operated to raise the belt levitating frame to partially lift the ground belt. Thus, the height difference from the exit conveyor of the unloader to the ground conveyor becomes small, and the impact force accompanying the fall of the ore or the like becomes very small. Since the attachment and detachment of the conveyor floating frame from the elevating frame is performed by the hanging hook and the hook driving mechanism, the detaching operation is easier and more reliable than the conventional insertion and removal of pins, and remote operation is possible.

According to a second aspect of the present invention, a first positioning mechanism comprising a receiving cylinder and a rocket pin is provided between the traveling frame and the elevating frame, and a first positioning mechanism is provided between the elevating frame and the belt floating frame. A second positioning mechanism is provided. Since the rocket pin is inserted into the receiving cylinder, the rocket pin can be reliably positioned in the radial direction, that is, in the horizontal direction.
There is no need to worry about the lower frame rolling.

According to a third aspect of the present invention, a rocket pin is inserted into a receiving cylinder, wherein a third positioning mechanism comprising a receiving cylinder and a rocket pin is provided between the belt floating frame and the mounting table. The positioning of the rocket pins in the radial direction, that is, in the horizontal plane direction can be reliably performed, and the belt floating frame can be accurately mounted on the mounting table.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a front view of a ground conveyor levitation device according to the present invention, and a belt levitation frame 30 is in a state of floating in the air for easy understanding. The ground conveyor levitation apparatus 1 includes a traveling frame 2 extending from an unloader (not shown), and an elevator 3 attached to the traveling frame 2.
3, a lifting frame 6 suspended from lifting rods 4, 4 of these lifting devices 3, via connecting rings 5, 5 and the like, and a hook driving mechanism 10 (hook driving mechanism) attached to the lifting frame 6. 10 is, for example, an electric cylinder 11,
It consists of levers 12,13 and links 14,14. )When,
Suspended hooks 20, 20 that can be driven by the hook driving mechanism 10, a belt floating frame 30 suspended by the hanging hooks 20, and mounting tables 40, 40 that support the belt floating frame 30 at a standby position. Consists of

In the ground conveyors 50, 50 indicated by imaginary lines, PL0 indicates a non-floating path line, and PL1 indicates a floating path line. Here, the pass line means a representative height of the upper surface of the conveyor belt.

FIG. 2 is a side view of the ground conveyor levitation apparatus according to the present invention, wherein the lifting frames 6, 6 are square beams, and the belt levitation frame 30 is longitudinal beams 31, 31.
(The inner 31 is not shown.) The cross beams 32 are passed between them, and the conveyor rolls 33 are attached, and are the main members of the mounting tables 40, 40 on the lower ground conveyor frame 51. This shows that the columns 41, 41 have been set up.

FIG. 3 shows a hanging hook and a first hook according to the present invention.
FIG. 2 is a perspective view showing a two-positioning mechanism, in which a hanging hook 20 includes left and right levers 21 and 22, a hook bar 23 wrapped around tips of the levers 21 and 22, and a pin 24 for fixing the lifting frame 6. On the other hand, a hook plate 27 having a J groove 26 is attached to the longitudinal beam 31 of the belt floating frame, and the hook bar 23 is hung on the two hook plates 27, 27. Since the hook bar 23 is hung on the hook plates 27, 27,
Even if the hook bar 23 is slightly deviated from the position of the hook 27, there is no fear that the hook bar 23 will be hooked.

The first positioning mechanism 60 includes a downwardly directed rocket pin 61 attached to a traveling frame (not shown).
And a receiving cylinder 62 attached to the lifting frame 6.
Similarly, the second positioning mechanism 65 includes a receiving cylinder 62 attached to the lifting frame 6 and an upward rocket pin 66 attached to the longitudinal beam 31. Although the receiving cylinder 62 is used for both upper and lower sides, it may be constituted by two shorter receiving cylinders. In the present invention, the rocket pin refers to a pin having a shape in which the tip of a cylindrical pin is protruded in a conical shape.

When the lifting frame 6 is raised by the action of the lifting rod 4, first, the receiving cylinder 62 enters the tip taper (lower end taper) of the rocket pin 61. The receiving cylinder 62 is centered while ascending along the tip taper.
Similarly, when the elevating frame 6 is lowered toward the longitudinal beam 31, the receiving cylinder 62 enters the tip taper (upper end taper) of the rocket pin 66. The receiving cylinder 62 is centered while descending along the tip taper.

Therefore, the lifting frame 6 can be positioned with respect to the traveling frame, and the longitudinal beam 31 of the belt floating frame can be positioned relatively with respect to the lifting frame 6. Since the rocket pins 61 and 66 are inserted into the receiving cylinder 62, even if a horizontal force acts on one frame after the insertion, the other frame serves as a support so that good positional accuracy can be maintained. it can.

FIG. 4 is a diagram showing a third positioning mechanism (first embodiment) according to the present invention. The third positioning mechanism 70 is provided on the upper surfaces of the supporting columns 41, 41 of the mounting table erected from the ground conveyor base 51. An angle 71 attached in a "" shape and a triangular plate 72 attached to the lower surface of the longitudinal beam 31 of the belt levitation frame. The triangular plate 72 has a right-angled isosceles triangle in cross section, and its hypotenuse is applied to the flange of the angle 71, and is suitable for positioning in the left-right direction in the drawing.

FIG. 5 is a view showing a third positioning mechanism (second embodiment) according to the present invention. The third positioning mechanism 70 is provided on the upper surface of the receiving cylinder 74 attached to the longitudinal beam 31 and the support column 41 of the mounting table. Rocket pin 75 facing upward. With this configuration, the longitudinal beam 31 can be positioned with respect to the mounting table 40 in all horizontal directions.
Although the structure is more complicated than that of the first embodiment shown in FIG. 4, it can be said that the positioning is excellent.

The operation of the above-mentioned ground conveyor levitation apparatus will now be described. In FIG. 1, the belt floating frame 30 is properly mounted on the mounting tables 40, 40 or suspended from the lifting frame 6. Therefore, the belt floating frame 3
If 0 is placed on the mounting tables 40, 40, the traveling frame 2 is moved in the front and rear directions of the drawing to lift the belt floating frame 30, and the lifting frame 6 is brought to a predetermined position. Next, the lifting frame 6 is lowered, and the hook driving means 10 is driven (or actuated) so that the hanging hooks 20, 20 are hooked on the hook plates 27, 27. The lifts 3 and 3 are driven (or actuated) to raise the lift frame 6 and the belt levitation frame 30 by 500 to 700 mm, so that a part of the belt of the ground conveyor 50 is floated.

The belt floating frame 30 is mounted on the mounting tables 40, 4
In order to put it on 0, the above procedure may be performed in the reverse order, and the description is omitted.

FIGS. 6 (a) and 6 (b) are diagrams illustrating the overall operation of the ground conveyor levitation apparatus according to the present invention. In order to distinguish between the first and the second, A or B is appropriately added to the reference numeral.
In (a), from the outlet conveyor 77 of the unloader,
For example, when transferring the ore to the first ground conveyor 50A, a part of the first ground conveyor 50A is lifted by the first belt floating frame 30A, the height difference between the two conveyors 77 and 50A is reduced, and the ore falls. Relieve shock. The first belt floating frame 30A is integral with the traveling frame 2 of the unloader, and the unloader moves in the direction of the arrow according to the position of the hold, so that the first belt floating frame 30A also moves in the direction of the arrow. I do.

For the purpose of dropping the ore or the like from the end of the conveyor in the direction of the arrow, a plurality of conveyors 50A and 50B such as a first ground conveyor 50A and a second ground conveyor 50B.
Are arranged in series. The first belt levitation frame 30A is the first
Since the lateral conveyor can be moved only within the loop of the ground conveyor 50A, the following procedure is used to move the outlet conveyor 77 of the unloader to the second ground conveyor 50B.

In (b), the first belt floating frame 30A faces the first mounting table 40A, descends, and places the first belt floating frame 30A on the first mounting table 40A. Further, the traveling frame 2 and the exit conveyor 77 are moved sideways to face the second mounting table 40B, and the second belt floating frame 30B placed thereon is lifted.

As is apparent from (a), the second belt floating frame 30B does not lift the second ground conveyor 50B during standby. Therefore, the belt life of the second ground conveyor 50B is extended. From (b), the same applies to the first ground conveyor 50A.

The lift 3 is a mechanical jack, an electric jack, a hydraulic jack, a pinion rack, a wire jack,
Any type of drum may be used. In short, any type of mechanism can be used as long as it has a function of moving an object up and down.

Further, the hook driving mechanism 10 includes the hanging hook 2
A mechanism for swinging the hook 0 by a predetermined angle or moving the hanging hook 20 by a predetermined distance may be used. A rotating means for directly swinging the hanging hook 20, an electric motor having a gear mechanism, a hydraulic motor, or a slide for moving the hanging hook 20 sideways. mechanism,
A pinion rack mechanism is acceptable.

Further, the receiving cylinders 62 and 74 are desirably pipes as in the present embodiment. However, the receiving cylinders 62 and 74 may have a cylindrical hole in a block or a frame, or may have a hole in a plate.

[0031]

According to the present invention, the following effects are exhibited by the above configuration. Claim 1 is to raise and lower the belt levitating frame by an elevator, and when the path line of the belt levitating frame coincides with the path line of the ground conveyor when placed on the mounting table, the bending operation of the ground conveyor is eliminated, The life of the belt of the ground conveyor is extended. Furthermore, since the attachment and detachment of the conveyor floating frame from the elevating frame is performed by the hanging hook and the hook drive mechanism, the attaching and detaching operation is easier and more reliable than the conventional insertion and removal of pins,
Remote operation becomes possible.

In a second aspect of the present invention, a first positioning mechanism comprising a receiving cylinder and a rocket pin is provided between the traveling frame and the elevating frame, and the first positioning mechanism is provided between the elevating frame and the belt floating frame. Since the second positioning mechanism is provided, there is no need to worry about the lower frame rolling.

According to the third aspect, since the third positioning mechanism including the receiving cylinder and the rocket pin is provided between the belt floating frame and the mounting table, the belt floating frame can be accurately mounted on the mounting table.

[Brief description of the drawings]

FIG. 1 is a front view of a ground conveyor floating device according to the present invention.

FIG. 2 is a side view of the ground conveyor floating device according to the present invention.

FIG. 3 is a perspective view showing a hanging hook and first and second positioning mechanisms according to the present invention.

FIG. 4 is a third positioning mechanism according to the present invention (first embodiment);
Figure

FIG. 5 shows a third positioning mechanism according to the present invention (second embodiment).
Figure

FIG. 6 is an overall operation explanatory view of the ground conveyor levitation device according to the present invention.

FIG. 7 is an operation diagram of a conventional unloader ground transfer device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ground conveyor floating device, 2 ... Running frame, 3 ... Elevator, 6 ... Elevating frame, 10 ... Hook drive mechanism, 20
... hanging hook, 30 ... belt floating frame, 40 ... mounting table, 50 ... ground conveyor, 60 ... 1st positioning mechanism, 6
1, 66, 75 ... rocket pin, 62, 74 ... receiving cylinder,
65: second positioning mechanism, 70: third positioning mechanism, 7
7: Exit conveyor, PL0: Non-floating pass line, PL
1. Passing line when ascending.

Claims (3)

[Claims] 1. A traveling frame that supports an outlet conveyor of an unloader and moves laterally with the unloader, an elevating frame mounted on the traveling frame via a lift, a lifting hook mounted on the lifting frame, and a hanging hook. A hook driving mechanism, a belt floating frame which is detachably suspended from the lifting frame via the hanging hook, and a path line of the belt floating frame substantially coincides with a non-floating path line of the ground conveyor. An unloader ground conveyor levitation device consisting of a mounting table that supports the belt levitation frame. 2. A first positioning mechanism comprising a receiving cylinder and a rocket pin is provided between the traveling frame and the elevating frame, and a first positioning mechanism comprising a receiving cylinder and a rocket pin is also provided between the elevating frame and the belt floating frame. 2. A floating apparatus for a ground conveyor of an unloader according to claim 1, further comprising two positioning mechanisms. 3. The unloader ground conveyor of an unloader according to claim 1, wherein a third positioning mechanism comprising a receiving cylinder and a rocket pin is provided between the belt floating frame and the mounting table. apparatus.