JP2711312B2 - Method and apparatus for transferring log onto chain deck - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method of placing a log on a chain deck in a chip manufacturing line and an improvement of the chain deck, and in particular, a method of directly logging a log from a truck bed to a chain deck. The present invention relates to a device that effectively utilizes the movement of a chain when transferring.

[Prior art] Currently, factories that use domestic timber at the time of chip production require significant cost reductions in order to compete with inexpensive imported materials and imported chips, and accordingly, various machines and devices for producing chips. Various arrangements and improvements have also been made to their arrangement and the like. For example, as domestic timber, inexpensive small trees or small-diameter trees (about 10 to 20 cm or less in diameter) such as thinned trees are frequently used, but these have various thicknesses and degrees of bending.

Therefore, the barker body (hopper) is made longer and the mounting position and shape of the peeling tool are devised so that the peeling of the bent material can be performed reliably and efficiently. In order to reduce the labor of cutting by making it possible to insert the raw wood, and to lengthen the conveyor belt that transports the raw wood to the chipper to facilitate the alignment of the raw wood and the selection of the raw wood with insufficient peeling, etc. Have been done.

On the other hand, when loading raw wood into a barker, the raw wood transported by truck is once dropped on the ground and then directly injected into the raw wood input port with a forklift, or loaded on the chain deck and transported to the raw wood input port. ing. The latter has the advantage that the forklift operation is less than that of the former, since the temporary storage of raw wood is possible, and there is an advantage that continuous quantitative input of raw wood can be performed by adjusting the chain drive. Especially convenient.

[Problems to be Solved by the Invention] However, conventionally, in any case, a forklift is used for handling raw wood, so that extra manual driving is required and fuel and maintenance costs are required. Further, there is a drawback such that work cannot be advanced in bad weather such as snowfall or heavy rain. Moreover, the conventional chain deck has a short length (at most 10
m), it is not possible to place a large amount of logs
Logs need to be piled up frequently, and logs need to be arranged in the soil, which makes the labor and cost of handling the logs significant. Also, the land had to be quite large.

These problems can be solved by making it possible to transfer the logs directly from the truck that imported the logs to the chain deck.
Conventionally, it has been difficult for various reasons.

That is, in most of the conventional chain decks, the log loading side is higher than the truck bed (usually about 2 to 3 m).
This is due to the fact that many barkers are installed at a height of about 2 to 3 m above the ground for the sake of post-processing, and there is a risk that the logs will fall off if the chain deck is short and steep. Therefore, if a device such as a crane or a wrecker is used, the transfer can be performed as it is. However, the device becomes large-scale, and in the case of a small-diameter tree, the operation is extremely troublesome.

On the other hand, at present, there are many methods of unloading raw wood to the ground by suddenly applying a brake during backing to release the log in order to improve work efficiency. Therefore, even if the chain deck is long and the log loading side is lowered, or if the loading bed and the gantry are provided and the truck bed is higher than the chain deck loading side, the log is directly transferred from the bed, A large shock is applied to the deck and it will be damaged immediately. Even if the log is gradually transferred by dump truck,
A large force is applied by the fall, and the device is likely to be damaged.

Therefore, despite the above-mentioned problems, at present, many factories, particularly those using small-diameter trees, use a forklift to place raw wood on a chain deck.

[Means for Solving the Problems] Accordingly, the present inventor has conducted intensive studies to solve the above problems, and as a result, has noticed that the logs on the truck bed are tightly bundled with binding ropes to prevent collapse of the load. Thus, a method and an apparatus for pulling the binding rope together with the log and moving it on the chain deck have been completed.

That is, at present, the truck bed of most trucks is provided with sliding rails to assist in the release of log. Furthermore, after loading the logs, all logs are tightly integrated with a binding rope such as a durable wire rope in order to prevent collapse of the load, and unloading is performed while unloading the logs with the binding rope.

Therefore, if the binding rope is pulled by any means, it becomes possible to transfer all the logs on the carrier to the chain deck smoothly and without giving any impact force. The greatest feature of the present invention is that a chain of a chain deck is used as a means for pulling. If a chain is used, the transport speed and the towing speed are the same, and the towing can be performed stably and reliably, and the connecting operation is easy. In addition, there is no need to separately install a traction device such as a winch, and the cost can be reduced.

The chain deck has a number of chains (usually two) that extend the length of the chain that feeds the logs in the lengthwise direction, with a passage provided on both sides or one side, and a fall prevention panel attached to the outside of the passage. Most of the structures are supported by pillars.
The width is around 4m, the height is 2-3m on the loading side, and the loading side in contact with the barker is about 4-5m. The length is at most about 10m.

Each chain is divided into several drive blocks instead of one continuous one, and each chain of each drive block can be driven independently of the other blocks. This is convenient for driving only a certain driving block or changing the speed with another driving block to perform operations such as accumulation and averaging of logs placed thereon. The shorter the length of the drive block, the more finely controlled it can be, but the operation is complicated, so it is usually about 5 to 6 m.

The chain deck of the present invention is basically the same as the conventional one. However, the height of the loading side should be the same as or less than the height of the truck bed, for example, about 1 m, and a place for hooking a towing tool etc. on the chain for towing the log is provided. Are different. However, the hook hooking portion may be a traction tool hooking metal separately provided on the chain, or the chain roller itself may be used.

The chain for pulling the log may be provided separately from the transport chain, or may be shared. In addition, one set of towing chains may be arranged at the center to use one towing tool, or two sets of towing chains separated from each other may use two towing tools. Various types of metal fittings, such as a rod incorporated between two chains and a notch attached to a link plate of a chain, are used as the metal fittings for locking the towing chain.

As the traction tool, a wire rope is most suitable, but other chains or a rod of an appropriate length, although somewhat inconvenient, can also be used.

Next, lowering the height of the loading side of the chain deck means lowering the absolute height from the ground (GL) and installing a pile of soil, a stand, a lifting lift, etc. at the place where the truck will be loaded This is a concept including lowering the relative height with respect to. In the former case, it is conceivable to make a steep slope with the conventional length and to extend the length. Since a steep slope is not preferable, it is easier to extend the existing apparatus if it is improved, and if the apparatus is newly installed, it is safer to operate with a longer length because the slope is lower. In addition, the gradient is
Although 20 ° to 30 ° can be seen, it is more preferably around 10 °.

In the case of the latter, that is, when the relative height with respect to the truck bed is lowered by earth filling or the like, the conventional chain deck can be used as it is. The embankment can be used when the loading side is high, even in the case of an extension of the conventional device or a long new chain deck.

If the chain deck is long, there is also an advantage that a large amount of logs can be placed. For example, if it is about 10 m, only about 1 to 3 trucks can be placed at a time,
If the length is 20 to 30m, 5 cars (50 tons) can be placed easily.
Therefore, if it is a chip factory with a daily processing capacity of 50 tons, if the chain deck length is 10 m, it is necessary to control the interval of the loading time by truck, but if it is 20 to 30 m, loading can be accepted continuously. . In addition, there is no need to store a large amount of log in the earth.

Conventionally, the reason why the chain deck is short is that the chain deck is provided orthogonal to the barker, and if the length is long, it interferes with earthwork work. However, in the present invention, since the logs are transferred directly from the truck onto the chain deck, the storage of the logs and the work of the soil in the soil are greatly reduced, so that the soil may be narrowed. Accordingly, in the present invention, the chain deck may be extended as it is, but if it is curved in the middle, effective use of the soil can be achieved, and in the case of a new construction, it can be installed in a narrow place.

The advantages of the extended curvature are as follows. That is, the line connecting the barker and the chipper is linear and has a length of several tens of meters, and these are stored in an elongated building. In addition, the outside is only used for truck tracks at the ground. Therefore, by installing a substantial part of the chain deck along this long building, a long chain deck can be obtained without disturbing earthwork. However, the input side of the chain deck must be orthogonal to the log input port of the chipper as before. Therefore, the portion along the barker including the loading side of the chain deck and the portion orthogonal to the barker need to be connected by a curved portion. The degree of curvature can be arbitrarily determined according to the situation of the earth. However, if the portion along the building is two or more rows and the ends are connected by a semicircular curved portion, the length of the chain deck can be increased. Can be made longer,
The amount of logs to be placed can be increased.

[Examples] Next, the present invention will be described in more detail based on examples shown in the drawings.

FIG. 1 is a plan view showing an example of a chip manufacturing line incorporating a chain deck according to the present invention.

In this chip production line, a barker 1 and a conveyor 2 and a chipper 3 for transporting a raw bark H are arranged in a substantially straight line in a long and narrow building 5 as in the past, and the input side 4a of the chain deck is connected to the barker input port 1a. , The length of the chain deck 4 is extended to about double (for example, 20 m) as it is, and the height of the loading side 4b is made lower than the bed of the truck T (for example, about 90 cm). Things. Assuming that the height of the input side 4a of the chain deck 4 is about 4 m, the gradient of the chain deck 4 becomes about 9 times. The overall width is around 4m.

In the building 5, a screen 6 for further sorting wood chips cut by the chipper 3, a chip storage 7 for storing chips passing through the screen, a large wood chip (sleeve)
It is also the same as the conventional one that the sub-chipper 8 for cutting again and the belt conveyors 9, 10, 11, 12 and other various devices for connecting these are arranged as necessary. In the figure, reference numeral 13 denotes a land field.

On the other hand, as shown in FIG.
Three sets (15A, 15B, 15C) of drive blocks 15 having two transport chains 14 are provided, and both sides thereof are used as passages 16. Each drive block 15 is driven independently and independently. Although the drive chains 15 abut the transfer chains 14 in order to reliably transfer the log G, they may enter each other.

As shown in FIG. 2 and FIG. 3, the loading side drive block 15A has a pulling chain 17 stretched at the center thereof. Each of these chains and passages 16 is supported by a number of columns 18. Reference numeral 19 denotes a drop-off prevention panel (omitted in FIG. 2A).

The towing chain 17 is formed by connecting two chains 17a with a rod 17b at a predetermined interval of, for example, about 1 m.
17b is a metal fitting for hanging the towing tool. A sprocket 20 that drives the towing chain 17 and a sprocket 21 that drives the transfer chain 14 are fixed to the same rotating shaft 22 and have a motor.
Rotated at 23. In this example, the stacking side 4b of the towing chain 17 is at a lower level than the transport chain 14, but may be at the same level.

In the state where the rear end of the loading platform of the truck T is in contact with the end of the stacking side 4b of the chain deck 4, the binding rope W, which bundles the logs G, and the rod 17b of the towing chain 17 are
Connected by the towing tool 24, and the towing chain 17 (transport chain 14)
), And transfer the united log G onto the chain deck 4. As the traction tool 24, a wire rope having an appropriate length and provided with hooks and rings at both ends is used.
As a result, the bundle of logs G is smoothly transferred from the truck bed to the loading side 4b of the chain deck 4, so that almost no impact force is applied. Further, when the tow chain sprocket 20 and the transfer chain sprocket 21 have the same diameter, the tow speed of the raw wood and the transfer speed are the same, so that there is no concern about collapse of the load, and it is safe. The transport speed is usually about 4 to 6 m / min.

When the transfer of the whole log is completed, the traction tool 24 is removed and the binding rope W is released. Subsequently, the log of the next truck is transferred onto the chain deck 4. At this point, the previously transferred lump has moved upward.

If the two sprockets 20 and 21 have the same diameter, the wire-type traction tool 24 remains in a tensioned state even after the transfer of the entire raw wood bundle is completed, so that it is difficult to remove the hook or the like. Therefore, if the traction device 24 is provided with a latch-type loosening mechanism or if the sprocket 20 itself is configured to be in a reverse rotation or free rotation state, the traction device 24 can be easily removed. Alternatively, if the diameter of the sprocket 20 is set to be slightly smaller than the diameter of the sprocket 21, the traction is somewhat delayed compared to the conveyance, and the wire rope is loose at the time when the entire log bundle is transferred. Therefore, removal of the traction tool 24 can be facilitated.

As the traction tool 24, a wire rope type is the easiest to use, but chains and rods can also be used. In addition, the way of connecting the towing tool 24 and the binding rope W or the rod 17b is as follows.
The structure is not limited to hooking a hook or ring on the hook, as long as the hook or ring can be effectively engaged with the hook or ring.

As a metal fitting for hooking the towing tool provided on the towing chain, besides the rod 17b described above, for example, a strong notch 25b as shown in FIG. 4 (a) can also be used. The notch 25b is fixed to the link plate 25a of one thick and durable towing chain 25. Further, as shown in FIG. 4 (b), the roller 25c of the towing chain 25 (the same applies to the roller of the transport chain 14) itself is used as a place for hooking, and the hook of the towing tool 24 is used for this. You may make it hook. In this case, if the strength is sufficient, the chain of the conventional chain deck device can be used as it is in the present invention (FIG. 4 (d)). Alternatively, as shown in FIG. 4 (c), the tow chain may be omitted and the crossbar chain 26 may be used as a transport chain. In this case, two rings (or notches) 26b are provided on one connecting rod 26a provided at an appropriate interval, for example, about 1 m as shown in the figure, and the hooks (or rings) of the traction tools 24 are hooked on the rings 26b, respectively. Can also be connected. FIG. 4D shows a state in which the transport chain 14 is used as it is tow. In this case, a metal fitting may be separately attached to the chain 14, or the pulling tool 24 may be hooked on the roller.

Next, FIGS. 5A and 5B show an example in which the chain deck 4 is curved along the building 5. In this way, the area of the ground 13 is effectively used, so that the ground work is facilitated, and it is easy to assemble the chip manufacturing line even in a small location. In the curved portion 27, it is necessary to adopt a configuration in which the lower portion of the chain 28 is supported by a guide rail or slid on a pushing piece.

Further, as shown in FIG.
May be provided to make the chain deck 4 even longer. In this case, the bending portion 29 is formed in a semi-circular shape and the length of the bending portion becomes long. In this way, logs of about 10 trucks can be easily placed on the chain deck 4, and the working efficiency is further improved.

In each of the above examples, the case where the height of the chain deck loading side 4b from the ground is equal to or slightly lower than the height of the bed of the truck T has been described. However, the present invention can be applied to higher cases.

This is achieved by, for example, setting the height of the loading side 4b and the truck bed relatively to the same level by placing the embankment 30 at the truck stop position as shown in FIG. 7 or by providing a frame or a lift. You. Also in this case, the transfer of the raw wood bundle can be performed in the same manner as in the above example.

[Effects of the Invention] As described in detail above, in the method of the present invention, when a log chip is directly transferred from a truck bed to a chain deck, a binding rope that bundles the log and the chain of the chain deck are pulled by a pulling tool. By connecting and driving the chain, the bundle of logs is transferred onto the chain together with the binding rope.

Therefore, the forklift operation for handling the log is almost unnecessary, and the soil work is greatly reduced in labor and cost is greatly reduced. Moreover, since the bundle of raw wood is smoothly transferred from the truck bed to the loading side of the chain deck, the impact force is hardly applied, and unlike a separately provided device such as a winch, the operation is simple, and at least at the beginning of towing. This is an extremely ideal method, such as safe because there is no fear of collapse of the cargo because the pulling speed and transport speed of the log are the same.

On the other hand, according to the present invention, the height of the loading side of the chain deck is reduced to or less than the height of the truck bed by making the chain deck long or embankment, and the log is pulled together with the binding rope. The chain is provided with a place where a hook or the like of a traction tool is hooked so as to be transferred onto the chain deck.

Therefore, it is not necessary to separately incorporate a towing device such as a winch, and the entire log of the truck bed can be easily and reliably transferred to the chain deck by a simple operation. Also,
By increasing the length of the chain deck, a large amount of logs can be placed, and there is an advantage that the efficiency of loading and handling of the logs can be improved. This lengthening can be achieved by curving a part of the chain deck and arranging most of it along the line connecting the barker and the chipper, so that it does not hinder the work of the ground, and can be used sufficiently even in a narrow ground. There are advantages.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a chip production line incorporating a chain deck according to the present invention, FIG. 2 shows an example of a chain deck, (a) is a side view, (b) is a plan view, and FIG. Similarly, FIG. 4 (a) shows a loading side drive block of the chain deck, FIG. 4 (a) is a plan view, FIG.
(B), (c) and (d) show different states of connection of the traction tool to the chain, where (a) is a partial side view and (b)
Is a partial perspective view, (c) and (d) are plan views, FIG. 5 (a) is a plan view showing another example of a chip manufacturing line, and FIG. 5 (b) is a plan view of a curved chain deck. (C) is a plan view showing another example of the curved chain deck, and FIG. 6 is a side view of the chain deck showing still another example. G: Log, 17/25 ... Towing chain T: Truck, 17b ... Rod W ... Tying rope, 25b ... Notch 1 ... Barker, 25c ... Roller 4 ... Chain deck, 24 ... Towing tool 4a …… Loading side, 26 …… Cross bar chain 4b …… Loading side, 26a …… Connecting rod 14.28 …… Transport chain, 26b …… Ring

Claims (3)

(57) [Claims] When a log of chips is directly transferred from a truck bed to a chain deck, a binding rope for binding the logs and a chain of the chain deck are connected by a pulling tool,
A method of transferring logs to a chain deck, wherein the logs are transferred onto the chain together with a binding rope by driving the chains. 2. The method for transferring a log onto a chain deck according to claim 1, wherein the pulling tool is connected to a roller of a chain or a separately provided pulling tool latch. 3. The height of the log loading side of the chain deck is set to be equal to or less than the height of the truck bed, and the chain is provided with a place for hooking a tow hook or the like. Chen deck.