JP2003190833A - Device for opening/closing cover of tab in wood crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for opening/closing a cover of a tab in a wood crusher which quickly performs the opening and closing of the cover on charging wood into the tab. <P>SOLUTION: This device for opening/closing the cover of the tab in the wood crusher is provided with a mechanism which moves the cover 12 in a radial direction in addition to a mechanism which rotatably opens and closes the cover 12. When the wood is charged into the tab 7, the cover 12 is opened by transverse movement and, after the wood is charged, the cover 12 is returned to the original position by transverse movement. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tab lid opening / closing device for a wood crusher for crushing wood such as wood pieces, roots, and wooden construction waste materials for reuse.

[0002]

2. Description of the Related Art A conventional wood crusher is one in which wood is put in a circular rotary tub, chips are crushed by a crushing device below the tab, and the chips are discharged to the outside of the wood crusher by a conveyor. The chips obtained by crushing are reused, for example, by being sprayed on a park, farmland, or the like.
On such a tab, a lid that is rotated up and down by the expansion and contraction of a hydraulic cylinder to open and close is attached to a frame body on the outer periphery of the tab. This lid not only prevents the wood put in the tab from scattering, but also holds down the wood.

[0003]

The lid requires the hydraulic cylinder to expand and contract to open and close the lid when putting wood into the tub. However, it takes time to open and close the lid due to expansion and contraction of the hydraulic cylinder, and there is a problem that the efficiency of the crushing work deteriorates, especially in the case of the work of throwing in the wood at predetermined intervals.

In view of the above problems, an object of the present invention is to provide a tab lid opening / closing device of a wood crusher which can quickly open and close the lid when putting wood in the tab.

[0005]

A lid opening / closing device for a tab of a wood crusher according to claim 1 is rotatably mounted on a base and has a tab for accommodating wood and a tab provided under the tab. In a wood crushing machine provided with a crushing device for cutting wood into chips and a lid for covering an upper opening surface of the tab, a vertical rotation mechanism for vertically rotating the lid to open and close, and a horizontal cover for the lid. And a radial movement mechanism for moving in a direction.

According to a second aspect of the present invention, there is provided a lid opening / closing device for a tab of a wood crusher according to the first aspect, wherein the vertical rotation mechanism is a mechanism for vertically rotating the lid about a spindle. The radial movement mechanism is a mechanism that moves the lid in the radial direction together with the support shaft.

As described above, if the device for laterally moving the lid is provided, the opening area of the tab can be increased with a small amount of movement, and the opening / closing time of the lid can be greatly shortened.

According to a third aspect of the present invention, there is provided a lid opening / closing device for a tab of a wood crusher according to the first or second aspect, wherein the mechanism for moving the lid in the radial direction opens more than half of the upper opening surface of the tab by the opening operation. It is characterized in that it has a configuration that allows it.

As described above, the opening area of more than half can be obtained by moving the lid in the opening direction.
Space for wood is secured.

According to a fourth aspect of the present invention, there is provided a lid opening / closing device for a tab of a material crushing machine according to any one of the first to third aspects, in which a vertical rotating mechanism of the lid is provided on a frame body provided upright around the tab. An undulating frame attached to the undulating unit, a pin that rotatably connects the undulating frame and the lid, an undulating frame link having one end connected to the pin, and a lid link having one end connected to the lid. A lid rotation hydraulic cylinder having one end connected to the frame body of the tab and the other end commonly connected to the undulating frame link and the lid link, and the radial movement mechanism of the lid includes the frame body. And a hydraulic cylinder mounted between the undulating frame and the undulating frame for undulating the undulating frame.

According to this structure, the lateral movement mechanism of the lid can be constructed with a relatively simple structure by the undulating mechanism of the undulating frame and the link mechanism using the hydraulic cylinder. Further, by raising the undulating frame a little and extending the hydraulic cylinder for opening and closing the lid, the lid can be placed in a horizontal position at a high position, whereby even a large piece of wood can be pressed and crushed.

According to a fifth aspect of the present invention, there is provided a tab opening / closing device for a wood crusher according to the fourth aspect, wherein the lid link has a length adjustable structure.

As described above, by making the length of the lid link adjustable, the lid link can be made longer, which allows the lid to be held in a lower position to hold down the timber.
It can be crushed in a suitable state when crushing a relatively small piece of wood.

[0014]

1 is a side view showing an embodiment of a wood crusher to which a tab lid opening / closing device according to the present invention is applied, and FIG. 2 is a plan view thereof. In this wood crusher, a body frame 2 (base) is installed on a crawler type traveling body 1,
A power unit 3 and a driving device 4 for performing a traveling operation and the like are installed in a rear part of the body frame 2, a circular frame 5 is installed in a front part, and a tab 7 rotated by a drive device 6 is installed in the frame 5. Mounting.

A crushing device 8 for crushing the wood contained in the tub 7 into chips is provided below the frame 5. Further, a chip discharging conveyor 9 is attached to the vehicle body frame 2.
The rear part is located below the crushing device 8, and the front part is mounted so as to project to the front of the vehicle body. At the front end of the conveyor 9, a magnetic separator 10 and a chute 11 for dropping iron scrap that is attracted and separated by the magnetic separator to the rear are installed.

Reference numeral 12 denotes a lid for covering the upper open surface of the tab 7, and the lid 12 is installed by an opening / closing device 13 so as to be openable and closable. As shown in FIG. 2, the lid 12 covers the area beyond the center point O in the opening in the tab 7 so as to cover the opening / closing device 1
The third side has an arc shape along the tab opening surface, and the opposite end has a substantially semicircular shape with a linear shape.

FIG. 3 is an enlarged side sectional view showing the opening / closing device 13 and FIG. 4 is a plan view thereof. In FIG. 3, 1
Reference numeral 5 is an opening for guiding the wood put in the tub 7 to the crushing device 8. Reference numeral 16 is a roller for rotatably supporting the tab 7 on the frame body 5.

The opening / closing device 13 of the present embodiment comprises a vertical rotation mechanism for rotating the lid 12 in the vertical direction and a radial movement mechanism for moving the lid 12 in the radial direction of the tab 7. In the present embodiment, the opening / closing device 13 rotatably connects the undulating frame 19 attached to the frame body 5 so as to be undulating around the pin 17, and the undulating frame 19 and the lid 12 rotatably. A pin 20, an undulating frame link 21 having one end connected to the pin 20, a lid link 23 having one end connected to the lid 12 by a pin 22, and one end connected to the frame body 5 of the tab by a pin 25. , The other end is the undulating frame link 21
And a lid rotation hydraulic cylinder 27 that is commonly connected to the lid link 23 by a pin 26.

The vertical rotating mechanism of the lid 12 comprises a hydraulic cylinder 27 and the links 21 and 23. The radial movement mechanism of the lid 12 includes the frame body 5 and the undulating frame 1.
It is composed of a hydraulic cylinder 31 which is mounted between the upper and lower sides by means of pins 29 and 30 to raise and lower the undulating frame 19.

FIGS. 5A to 5C are views for explaining the operation of the opening / closing device 13. FIG. 5 (A) shows a state in which the opening surface of the tab 7 is closed by the lid 12 in a region exceeding the center point O, and FIG. 5 (B) shows a state in which the undulating hydraulic pressure is changed from the state shown in FIG. 5 (A). The cylinder 31 is extended to raise the undulating frame 19, and at the same time, the rotating hydraulic cylinder 27 is extended to push down the lid 12 around the pin 20 and raise the lid 12 in FIG. 5 (A) while keeping the lid 12 horizontal. 5C shows a state in which the hydraulic cylinders 31 and 27 are further extended to incline the tip of the lid 12 downward, as shown in FIG. 5C. Further, it shows a state in which it is further retracted from the center point O to the opening / closing device 13 side, and further extension of the hydraulic cylinder 31 causes the lid 12 to move in a direction away from the center point O about the pin 17 as a rotation center, and the hydraulic pressure Due to the extension of the cylinder 27 Tip 12 is intended to move away from the center point O of the pin 20 being accommodated in the tab 7 as the pivot center.

Then, in the state of FIG. 5A, the work put into the tab 7 is pressed to crush the wood while preventing it from scattering, and the hydraulic cylinders 31 and 27 are operated to move the lid 12 to the position shown in FIG. 5C through the state shown in FIG. 5C, the tip of the lid 12 moves to a state in which it is retracted from the central point O toward the opening / closing device 13 side, and the opening of the tab 7 is halved. Can be made larger than that.

When the lid 12 is opened to a certain extent in this way, the tip of the lid 12 and the tab 7 except for a particularly large piece of wood.
Wood can be thrown into the tab 7 by gripping it with, for example, a grapple or the like through an opening between the inner wall and the inner wall.

In the opening / closing device 13 described above, the hydraulic cylinder 31 having a relatively large capacity, which has a function of preventing the lid 12 from being lifted due to a collision of wood, has a small capacity in the hydraulic cylinder 31 which mainly undulates the undulating frame 19. The rotating hydraulic cylinder 27 shown in FIGS. 5A and 5C.
The amount of expansion and contraction is small, and since the operation of opening the lid 12 is performed by the extension of the undulating hydraulic cylinder 31 of the undulating frame 19 having a small capacity, the closing operation from FIG. 5C to FIG. Since the hydraulic cylinder 31 having a small capacity is contracted, the time required for opening and closing is shortened.

Further, in this embodiment, FIG.
As shown in (B), with the lid 12 kept horizontal, the tab 7
Since it can be set to a position slightly higher than the upper surface 7a of the above, a large-sized wood can be easily put in the tab 7 and crushed.

FIG. 5D is a side view showing a modified example of the above-described embodiment. Instead of the lid link 23, for example, a turnbuckle (or a hydraulic cylinder) may be used as the lid link 23.
By using it as A, the length can be changed. With this configuration, the lid link 2
The length of 3A can be increased, whereby the lid 12 can be held in a low position to press the wood, and the wood can be crushed in a suitable state when crushing a relatively small wood.

[0026]

As described above, according to the tab lid opening / closing device of the present invention, the tab lid can be opened and closed by the vertical rotation mechanism and the radial movement mechanism.
The opening and closing time of the lid can be greatly shortened, and the efficiency of the crushing work of wood can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a wood crusher to which a tab lid opening / closing device according to the present invention is applied.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side sectional view showing an embodiment of a tab lid opening / closing device according to the present invention.

FIG. 4 is a plan view showing an embodiment of a tab lid opening / closing device according to the present invention.

5A to 5C are process diagrams showing the opening operation of the lid of the present embodiment, and FIG. 5D is a side view showing a modified example of the lid link of the present embodiment.

[Explanation of symbols]

1: traveling body, 2: body frame, 3: power unit,
4: Driving device, 5: Frame, 6: Driving device, 7: Tab,
8: Crushing device, 9: Conveyor, 10: Magnetic separator, 11: Chute, 12: Lid, 13: Opening / closing device, 15: Opening part, 1
6: Roller, 17, 20, 22, 25, 26, 29, 3
0: pin, 19: undulating frame, 21: undulating frame link, 23,
23A: lid link, 27: hydraulic cylinder for lid rotation, 3
1: hydraulic cylinder for undulation, O: center point

Claims (5)

[Claims] 1. A tab rotatably mounted on a base for accommodating wood, a crushing device provided under the tab for chipping the wood, and a lid for covering an upper opening surface of the tab. In a wood crushing machine including: a wood crushing machine, comprising: a vertical rotation mechanism that vertically opens and closes the lid, and a radial movement mechanism that horizontally moves the lid. Lid opening and closing device for machine tabs. 2. The tab lid opening / closing device for a wood crusher according to claim 1, wherein the vertical rotation mechanism is a mechanism for vertically rotating the lid about a support shaft, The direction moving mechanism is
A lid opening / closing device for a tab of a wood crusher, which is a mechanism for moving the lid together with the support shaft in a radial direction. 3. The tab lid opening / closing device for a wood crusher according to claim 1 or 2, wherein the mechanism for moving the lid in the radial direction opens half or more of an upper opening surface of the tab by an opening operation. A tab lid opening / closing device for a wood crusher having a configuration. 4. The tab lid opening / closing device for a wood crusher according to claim 1, wherein the lid vertical movement mechanism is undulated on a frame body provided upright around the tab. An undulating frame freely attached, a pin that rotatably connects the undulating frame and the lid, an undulating frame link having one end connected to the pin, and a lid link having one end connected to the lid, One end is connected to the frame of the tab and the other end is composed of a hydraulic cylinder for lid rotation commonly connected to the undulating frame link and the lid link, and the radial movement mechanism of the lid is the frame body. A lid opening / closing device for a wood crusher, which comprises a hydraulic cylinder mounted between the undulating frame and undulating the undulating frame. 5. The lid opening / closing device for a tab of a wood crusher according to claim 4, wherein the lid link has a length adjustable structure.