JPS6123136B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bridge type reclaimer for discharging loose materials.

Among cargo handling machines for discharging bulk materials, bridge-type reclaimers operate in right angles and parallel motions compared to swing-type reclaimers, so they are easier to automate and are in high demand as equipment for discharging raw materials for various blunts. FIG. 1 shows an example of a conventional bridge-type reclaimer, in which the bucket wheel 2 rotates while traveling over the girder 1, scooping up raw material from the pile 3 to the in-machine conveyor 4. It is to be delivered to the ground conveyor 5.

When the pile is divided into several types, the bridge reclaimer must move beyond the piles that do not need to be discharged to the predetermined pile position.

In the conventional example, in order to achieve this purpose, a part of the girder is suspended from the boom 7a with a hoisting rope 7, and when crossing unnecessary piles, a hoisting winch 7b is used.
The tip of the girder 1 is lifted at the point shown in FIG. 1 by the two-dot chain line to avoid unnecessary piles.

However, in this method, it is necessary to make the height of the prop 8 which can freely run much higher than the height H of the pile 3, and the running weight of the prop 8 increases. Furthermore, when lifting the girder 1, the bucket wheel 2 needs to be moved inside the girder hinge pin 1a, as shown by the two-dot chain line in FIG. 1, and then placed on the girder 1 again during work. Furthermore, when the girder 1 is lifted diagonally, it is necessary for the lower end of the girder 1 to avoid the pile 3, which has the disadvantage that the stacking width of the pile 3 is restricted.

An object of the present invention is to provide a bridge type reclaimer that does not impair pile loading efficiency and has good work efficiency.

The gist of the present invention is that it has a mechanism that moves the girder of the reclaimer up and down in a horizontal state by the operation of a link, and that it is possible to cross over piles while keeping the girder horizontal.

Next, regarding one embodiment of the present invention, FIGS.
This will be explained based on FIG.

FIG. 2 shows the entire bridge type reclaimer according to an embodiment of the present invention. pile 3
A girder 1 is provided across the entire width of the girder 1, and a bucket wheel 2 is provided to freely move across the girder 1. Running rails 9, 10, 9 provided on both sides of the pile 3
By rotating a part of the running wheel 11 on a and 10a with a motor (not shown), a vertically rotating shaft is attached to the top of the support 8 installed so that it can run freely on the running rail through a pin 12. Each link 13 is attached movably. One end of the link 13 is connected to one end of the girder 1 via a pin 14, and the other end of the link 13 is connected to the girder 1, bucket wheel 2,
The balance moment is such that the moment around the column top pin 12 due to the full weight of the conveyor 4 on the girder 1, the trolley 2a that makes the bucket wheel 2 move sideways on the girder 1, etc., is left slightly in the direction in which the girder 1 is lowered. A counterweight 15 is arranged to generate a moment that causes .

A luffing drive device is provided between the link 13 and the column 8. This undulating drive device is as follows. That is, pulleys 16 and 17 are provided at the bottom of the counterweight 15 and at the bottom of the column 8, and the rope 7 is wound around the pulleys 16 and 17 from a winding drum 18 provided on the column 8. It has a structure that can be rotated by a motor (not shown). In order to support the girder 1 when the tension of the rope 7 becomes zero,
Wheels 20 are installed at the lower end of the girder 1 in order to enable the vehicle to run on the running rails 9 and 10 in conjunction with the support 8.
A support stand 21 having a diameter is disposed, and the support stand is connected to the column 8 via the connecting rod 1.

As mentioned above, the same equipment consisting of the rotatable link 13 on the movable support column 8, the support platform 21 that can move in conjunction with the support column, etc.
Running rails 9a and 10 installed on the other side of the pile 3
A link 13 is also provided on the girder 1 and connected to the other end of the girder 1.

In addition, in order to transport the loose material collected from the bucket wheel 2 to the required location, a ground conveyor 5 is arranged between two running rails on either side of the pile 3. be.

Since this embodiment is configured as described above, when collecting loose material from a predetermined pile, the winding drum 18
is loosened, the girder 1 is completely lowered and placed on the traveling support base 21 with no tension on the undulating rope 7, and the rotation of the bucket wheel 2 and the lateral movement on the girder 1 (in the longitudinal direction of the girder 1) are performed. The loose materials in the pile 3 can be scooped up onto the conveyor 4 on the girder 1 and discharged onto the conveyor 5 on the ground due to the combination of the above-mentioned movement) and the traveling action of the support column 8.

On the other hand, when traveling over the top of the pile that does not need to be paid out to the specified pile, the undulating rope 7 is connected to the winding drum 1.
By winding at 8, the link 13 is attached to the pin 12.
, and easily reach a position exceeding the height H of the pile 3, as shown by the chain line in Figure 4, without tilting the entire girder 1, including the bucket wheel 1, as shown by the chain line in Figure 3. can be lifted to In this state, by running the support column 8 together with the support base 21 on the traveling rails 9, 10, 9a, 9b, it is possible to move the column to a predetermined pile position beyond piles that do not need to be paid out. After the movement, the rope 7 is let out from the winding drum 18 and the girder 1 is lowered onto the support stand 21 before work is started.

As described above, according to this embodiment, it is possible to easily move over piles, which is a necessary condition for automating a bridge reclaimer, without any extra operations such as changing the position of the bucket wheel. , has a mechanism that lifts the tip by rotating the link to avoid the height of the pile, so the center of rotation of the link, that is, the pin 12, can be placed at a height of 60 to 70% of the total pile height H, and the entire equipment can be It has the characteristic that the overall height can be made lower than H. That is, there is an advantage that the entire equipment can be made smaller and lighter.

In addition, since the girder 1 is lifted horizontally rather than diagonally as in the conventional type, there is no risk that the girder and the bucket wheel will come into contact with the end of the pile when it goes over the pile, and the loading capacity of the pile can be reduced compared to the conventional type. There are features that can be increased by type.

Furthermore, as mentioned above, the entire girder including the bucket wheel can be made higher than the total height of the pile to completely avoid it, so even if the bucket wheel is at any position on the girder, it is possible to go over the pile. Another benefit is that it provides increased efficiency.

Furthermore, as shown in FIG. 4, retaining walls 22 are provided at both ends of the pile in order to store efficiently in a narrow yard, making it possible to store 20 to 30% more loose material in the same site area than the conventional type.

The elevating drive device is not limited to this embodiment, and may be any device that moves the link 13 up and down, and may utilize, for example, the expansion and contraction force of a cylinder provided between the support column 8 and the link 13.

According to the present invention, the entire girder including the bucket wheel is lifted horizontally by rotation of the link,
Since it can be moved over the pile, it does not affect the shape of the pile, and it is possible to improve the efficiency of grading loose materials. In addition, since there is only one girder, the support supporting the link is lower, and a support base is provided to support the lowered girder, the support can be simplified, making the overall configuration simple and inexpensive. .

[Brief explanation of the drawing]

FIG. 1 is an overall side view of a conventional bridge type reclaimer, FIG. 2 is an overall perspective view of a bridge type reclaimer according to an embodiment of the present invention, and FIG. 3 is a side view of the bridge type reclaimer shown in FIG. FIG. 4 is a front view of the girder section of the bridge type reclaimer shown in FIGS. 2 and 3, with the part passing over the pile shown by a chain line and the part before going over the pile shown by a solid line. 1...bucket wheel, 2...girder, 3...
...Pile, 4...Conveyor on the gutter, 5...Conveyor on the ground, 7...Elevating rope, 8...Strut,
9, 9a, 10, 10a... traveling rail, 11...
...Wheel, 12, 14...Pin, 13...Link,
15... Counterweight, 16, 17... Pulley, 18... Winding barrel, 19... Connecting rod, 20... Wheel, 21... Support stand, 22... Retaining wall.

Claims (1)

[Claims] 1 Parallel tracks are provided with supports that can run freely, support stands are provided on each parallel track that are connected to the supports, each support is provided with a link that can freely rotate in the vertical direction, and a bucket wheel is installed. The ends of the girders on which the girders are installed are connected to the tips of the links, and a levitation drive device is provided between the support and the links to rotate the links in the vertical direction, so that the girders can be placed on a support stand when lowered. A bridge type reclaimer characterized by the following: