JPS6143629Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing wood loaded into a lumber collecting machine from falling off.

A lumber collection system that has a gripping device and a crane device on the vehicle body, places one end of the wood lifted by the crane device on the gripping device, fixes the wood with the gripping device, and transports the wood while dragging it. There is a chance. In order to facilitate the loading of wood in such a device, a roller is attached to the wood loading portion of the gripping device, and while rolling on the roller, the wood can be moved forward to be loaded or moved backward to be unloaded. It's like that. However, although such a roller device is effective during loading, if it shakes during movement even though it is fixed with a gripping device after loading, an inconvenient situation may occur in which the rollers slide backwards because they are free to rotate. . In the present invention, the opening and closing of the gripping bar of the gripping device and the rollers are linked to prevent the rollers from rotating in the direction in which the wood falls off during transportation, thereby preventing the wood from falling off.

This will be explained in detail with reference to the drawings. Reference numeral 1 denotes a pair of gripping rods that are symmetrically curved inwardly toward each other, and the lower part thereof is a box-shaped frame 2 that extends left and right.
A hydraulic cylinder 5 is connected between the grip rod 1 and the frame 2, and the grip rod 1 is rotatably supported by pins 4 on brackets 3 provided on both sides of the hydraulic cylinder 5. It seems like it rotates inward as it moves. Two rollers 8 on the left and right are installed on the side surface of the frame 2 between a bearing 6 protruding from the center and bearings 7 installed on both sides. A shaft 9 is supported on the shaft 9, and a large number of axially elongated plates 10 are fixed radially around the entire circumference at equal intervals, and the shape is gear-shaped. On the outer side, between the bearing 7 and the thin plate 10, several square blocks 11 having corners a are fixed at equal intervals, and the outer shape forms an irreversible rotating ratchet wheel. Reference numeral 12 denotes a stop plate having a claw portion b, which is fixed integrally with a boss 14 rotatably inserted into a pin 13 fixed to the side surface of the frame 2 in a direction perpendicular to the axial direction of the roller 8 and an intermediate member thereof. As shown in FIG. 4, which is a view taken along arrow B-B in FIG. shifted by a certain distance l in the same direction as
In addition, the claw part b on the front side surface is attached at a position where it can sufficiently contact the corner part a on the side surface of the block 11, and the rear part is attached by a spring 16 between it and a support plate 15 protruding from the frame body 2. Forced. Therefore,
The spring 16 always holds the claw part b of the stop plate 12 against the shaft body 9.
It acts in the direction of pushing towards. Reference numeral 17 denotes a push rod, which is fixed to the side surface of the base of the grip rod 1, and only when the grip rod 1 opens outward, its tip touches the stop plate 1.
2, so that it can be rotated slightly against the spring 16. The frame 2 has its central portion rotatably supported on a support base 20 on the upper part of the vehicle body 19 by a vertical pin 18. In addition, 21
2 is a crane device, 22 is a boom, 23 is an arm, 24 is a hook, and 25 is a hydraulic cylinder.

The present invention is constructed as described above, and when the work is actually carried out, the hydraulic cylinder 5 is actuated to open the gripping rod 1 to the left and right, and the hook 24 of the crane device 21 is opened.
The wood is hoisted up and one end is placed on the roller 8. When the gripping rod 1 rotates left and right to open, the push rod 1 protruding from the side of the gripping rod 1
7 pushes the rear part of the stop plate 12 downward against the spring 16, the stop plate 12 rotates around the pin 13 of the boss 14, and the front part including the claw part b springs up. Since the roller 8 is disengaged from the corner a of the block 11 and the claw b, it becomes freely rotatable. When the hydraulic cylinder 5 is actuated to rotate the grip bar 1 inward and close it, the rotation of the grip rod 1 causes the tip of the protruding rod 17 to separate from the stop plate 12, so that the stop plate 12 closes the spring 16. Due to bias, the claw part b
The corner part a of the block 11 rotates in the direction of engagement, and the tip part descends and hits the shaft body 9 of the roller 8. Since the center line M of the stop plate 12 is separated by a certain distance l from the vertical line N passing through the center of the shaft 9, when the stop plate 12 touches the shaft 9, the claw portion b on the side surface is exactly aligned with the shaft. Block 1 protruding from the outer periphery of 9
1, the roller 8 cannot rotate in the direction of arrow A in FIG. The block 11 is attached to the shaft body 9 at a required interval relative to the width of the stop plate 12.
Since the stop plate 12 is protruded from the block 11,
It can be unloaded between blocks 1 and 1.
Since the height of the block 1 is low, when the roller 8 tries to rotate in the opposite direction, the top of the block 11 passes under the bottom surface of the stop plate 12 and pushes up the stop plate 12, making it easy to rotate. can move. In this way, the wood placed on the roller 8 is not only fixed by the closing of the gripping rod 1, but also
The rollers 8 do not rotate in the direction in which the wood falls off, but can only rotate in the opposite direction, so even if the wood swings during transportation and a vertical external force is applied to the wood. , even though the wood may move forward, there is no risk of it moving backwards and falling off.

When transporting to a destination and unloading, open the gripping rod 1 to the left and right. As mentioned before, the rear end of the stop plate 12 that stopped the rotation of the roller 8 is pushed by the protruding rod 17, and the locking device is activated. is released and the roller 8 moves in the direction of arrow A.
That is, since it becomes possible to rotate the wood in the direction of unloading the wood, the wood can be grabbed and removed from the device by using the crane device 21 or simply by moving the vehicle body forward.

As mentioned above, the present invention not only secures the wood support part of the lumber collecting machine by simply holding it with the gripping rod, but also uses the rollers that place the wood during loading and unloading operations with the gripping rod open. can rotate freely, but if the gripping rod is closed and the wood is fixed, it will not rotate in the direction that would cause the wood to fall off, so there is no need to worry about the wood falling off even if it swings during movement. Very beneficial for safety.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIGS. 2 and 3 are perspective views of essential parts, FIG. 4 is an explanatory view of the locking device taken along the line B-B in FIG. The figure is a side view of a lumber collecting machine using the present invention. 2... Frame body, 8... Roller, 11... Block, 12... Stop plate, 16... Spring, 17... Projection bar, 21... Crane device.

Claims (1)

[Scope of utility model registration request] A pair of left and right grip bars can be opened and closed using hydraulic cylinders using a crane device for hanging, loading and unloading wood, and horizontal pins installed at both ends of the frame, which is pivoted by a vertical pin in the center of the top of the vehicle body. In a lumber collecting machine, the lumber collector has a gripping device that grips a plurality of pieces of wood using a frame body and the pair of gripping rods, and a plurality of pieces of wood are radially arranged around the outer periphery of the shaft body so that the outside shape is gear-shaped. Both ends of the roller, to which the plate and a plurality of blocks with corners forming an irreversibly rotating ratchet are fixed, are attached to the frame so that the outer periphery of the roller is above the wood placement part on the upper surface of the frame. It is supported by a provided bearing, and is normally engaged with the corner of the block forming the irreversible rotating ratchet wheel by the urging force of a spring, and rotates the roller in a direction opposite to the direction in which the wood placed on the gripping device slides down. A stop plate is provided, which has a claw portion that is only allowed in the case of
The tip of the protruding bar presses one end of the stop plate and swings against the spring only when the grip bar is opened, and the block fixed to the claw part of the stop plate and the outer periphery of the shaft body. A device for preventing wood falling off of a lumber collecting machine configured to have a shape that allows it to be disengaged from a corner of the lumber.