JPH0111443Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a lumber transport vehicle, and more specifically, to a lumber transport vehicle equipped with means for attaching lumber that can perform both board sawing and square sawing when sawing lumber using two band saw machines.

[Conventional technology]

This type of lumber transport vehicle is conventionally described in, for example, Japanese Patent Publication No. 56-20963. This conventional technology includes a wood turning device that rotates the log, a rotation displacement angle transmitter that responds to the rotational displacement of the log, and a node position display disk that rotates synchronously following this transmitter. This is a material transport vehicle for lumber, which is equipped with a knot position display device consisting of a knot position display board with a large number of display devices provided on the top, and an operation switch that controls this display device.

[Problem that the invention attempts to solve]

The above-mentioned conventional technology does not simply support the wood enough to be sawn by easily avoiding knot positions; in particular, when chucking wood, the support plate and joint plate are rotated and the claw position is adjusted using thumbscrews. The problem is that the operation is extremely troublesome. The purpose of this invention is to eliminate each of the above-mentioned problems.

[Means to solve the problem]

The purpose of this invention described above is to provide a headblock with a pair of dock chucks attached to the headblock support base that move horizontally using a hydraulic cylinder and move up and down along the column; a supporting arm,
This is achieved by providing a second support arm which is pivotally connected to the headblock support base and can rotate from a vertical position to a horizontal position and can move forward and backward in the length direction of the headblock support base using a hydraulic cylinder.

[Function] A first support arm is pivotally connected via a pivot to one end of the headblock, which has a pair of dog chucks attached to the headblock support base that move horizontally using a hydraulic cylinder and move up and down along the column; and the headblock support base. The second support arm is pivoted to the head block and can be moved forward and backward in the length direction of the headblock support base by means of a hydraulic cylinder, allowing the wood to be clamped and square sawn. Then, by rotating the second support arm 17, the sawn timber can be carried out.

【Example】

As shown in FIGS. 1 and 2, the material transport vehicle of this invention has a headblock support base 4 attached to a truck 3 having four wheels 2 on a rail 1, and a fluid A head block 8, to which a pair of dog chucks 7, 7, which are moved left and right by the pressure cylinder 5 and move up and down along the support column 6, is attached is mounted so as to be able to slide in the width direction of the support base. The headblock 8 is pivotally connected to one end of the headblock 8 by a pivot 9, and a stopper pin 11 attached to one end of the headblock support base 4 maintains the vertical state. from horizontal to vertical
A substantially L-shaped first support arm 10 is held in a horizontal state by a stopper piece 15 that can rotate 90 degrees, and a head block at the other end is partially the same as the first support arm 10 described above. A second support arm 17 is pivotally connected to the support base 4 by a pivot 16 and can rotate from a vertical position to a horizontal position, and can move forward and backward by a fixed amount in the length direction of the headblock support base using a hydraulic cylinder 18.
is provided. A plurality of protrusions 10a are provided on the opposing surfaces of the tapered ends of both support arms 10 and 17 to prevent slipping when supporting the wood. In addition, 1 in the figure
9 is a limit switch. The material conveying vehicle 20 of this invention is constructed as described above, and includes a pair of band saws 21 and 22 that can arbitrarily adjust the band saw interval within a fixed range within a moving range, as shown in FIGS. 2 and 3. The wood a, which is held by dock chucks or support arms 10, 17, is cut into bandsaws 27, 28, which are placed between the upper wheels 23, 24 and the lower wheels 25, 26, as the material transporting cars move.
The rail 1 is laid on one of the bandsaws 21 so that it can be sawed at 28. As shown in FIG. 1 and FIG.
Take one of the pieces of lumber a sent to you by
Two band saws 27 and 28 supported by the rail 1 and adjusted to the thickness width interval of the feeding plate and the head block 8 are moved by the plate thickness width to simultaneously saw two plates at a time. In the case of square sawing, as shown in FIG. 4, the support arms 10 and 17, which were in a vertical state during board sawing, are held in a horizontal state by rotating them until they come into contact with a vertically erected stopper piece 15. One of the pieces of wood a sent by the belt conveyor 29 is cut into a band saw 27 by one of the supporting arms 10 and the hydraulic cylinder 18.
28 and the other supporting arm 17 that moves through the space between the two supports the both ends of the lumber as shown in FIG. Do this. Next, the wood is rotated 90 degrees from the current supported state, supported again between both support arms 10 and 17, and then placed on the wood transport car 20 again.
Square sawing can be performed by moving the saw, and flat sawing can be performed by widening or narrowing the band saw interval after the previous side sawing. In this case, a support arm 10' having the same structure as the support arm 10 can be provided as shown by the broken line in Fig. 2 to support the length of the wood a (4 m, 3 m). Correspondingly, either support arm can be selected and used. At the end of sawing, set rail 1 in advance depending on the length of wood a.
The bandsaw 27 can be prevented from coming into contact with the support arm 10 by selecting a limit switch (not shown) provided along with the saw and stopping the material transport vehicle 20.

[Effect of the idea]

As mentioned above, this invention adopts a means to solve the above-mentioned problems, so wood can be chucked and sawed simply by moving the supporting arm forward and backward using a pressure cylinder, and by simply rotating the supporting arm. In addition to the effect of easy operation because the lumber can be carried out, it is also possible to perform board sawing by supporting the wood with the dock chuck, and corner sawing by supporting the wood with the support arm, which prevents scratches on the sawn surface of the wood during corner sawing. The present invention has the following effects: there is no fear, the structure is simple, it can be easily installed on existing material transport vehicles, and it has good operability.

[Brief explanation of the drawing]

The figures all show one embodiment of this invention; Figure 1 is a front view of the material transport vehicle, Figure 2 is a plan view showing the relationship between the material transport vehicle, band saw machine, and belt conveyor, and Figure 3 is a plan view showing the relationship between the material transport vehicle, band saw machine, and belt conveyor. 4 is a front view when sawing a board using two band saws, FIG. 4 is a front view when sawing into corners, and FIG. 5 is a plan view when sawing into corners. 3...Dolly, 4...Headblock support base, 5, 18...Fluid pressure cylinder, 6...Strut, 7...Dock chuck, 8...Headblock, 9, 12, 16... Pivot, 10, 17... Support arm, 15...Stopper piece, 20...Material transport vehicle,
21, 22... Band saw machine, a... Wood.

Claims (1)

[Scope of utility model registration request] In a lumber transport vehicle in which a headblock support base is provided on a cart having wheels on rails, a hydraulic cylinder 5 is attached to the headblock support base 4.
A headblock 8 is equipped with a pair of dog chucks 7, 7 that move horizontally and vertically along the column 6, and a pivot 9 is attached to one end of the headblock 8.
a generally L-shaped first support arm 10 pivotally connected via the
and a pivot 16 on the headblock support base 4.
and a substantially L-shaped second support arm 17 which is pivotally connected to the support arm 17 and pivotable from a vertical position to a horizontal position, and which can move forward and backward in the length direction of the headblock support base 4 by means of a hydraulic cylinder 18, A materials conveying vehicle characterized in that the lengths of opposing portions of the support arms 10 and 17 are each longer than the width of the band saw teeth.