JP2001269598A - Conveyance apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive conveyance apparatus which demonstrates good work efficiency by pressing an object to be conveyed always at a position close to an intake and is easy of assembly. SOLUTION: In the apparatus which has a conveyance table on which the object to be conveyed is mounted and a conveyer which swings between a lower stopper and an upper stopper which are pivoted freely swingably around a prescribed swinging shaft and regulate a swing range, holds the object between the press point of the conveyer nearest to the surface of the table and the surface of the table, and conveys the object from the inlet side of the conveyer to the outlet side while pressing the object, the swinging shaft is arranged between respective horizontal lines which pass through the rotary shaft of the conveyer on the outlet side of the conveyer when the conveyer is at the position of the lower stopper and when the conveyer is at the position of the upper stopper and in an area on the conveyer inlet side of a perpendicular passing through the center of gravity of the conveyer when the conveyer is at the position of the upper stopper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inexpensive and easy-to-assemble conveying apparatus for constantly pressing a conveyed object at a position near an intake port.

[0002]

2. Description of the Related Art As an effective method of using pruned leaves and trees, or thinned wood, etc., the leaves and trees are pulverized into fine chips and laid in parks or promenades to prevent drying in summer, There is a method of spreading trees around trees to help grow trees. In recent years, there has been an increasing demand for a crusher for finely crushing branches and leaves and trees. FIG. 6 shows a side view of the crusher 1. The pressing conveyor 2 is disposed above the vicinity of the transfer completion position of the transfer conveyor 3 for transferring trees from left to right. The pressing conveyor 2
Trees, which are irregularly shaped conveyed objects, are supplied to the intake 4 of the crushing device 5 as a processing place while being sandwiched between the conveyer 3 and the trees. The crushing device 5 driven by the engine 7
It has a rotating crushing blade and a crushing hammer (not shown) inside, and makes the tree supplied to the intake 4 into fine chips. The fine chips are loaded on the carrier of the transport vehicle via the blower duct 6.

When the pressing conveyor 2 conveys the article to the intake port 4 while nipping and pressing the conveyed object, the pressing conveyor 2
As the position of pressing the conveyed object is closer to the inlet 4, cutting and crushing by the crushing blade are performed more efficiently. Therefore, as an example of a technique for holding the pressing position close to the intake port 4, Japanese Patent Application Laid-Open No. H10-156210 discloses a starting wheel of a conveyor close to the intake port 4 of the pressing conveyor 2 at the time of pressing. A technique is disclosed in which a position to be pressed by sliding up and down in accordance with the size of the intake port is brought close to the entrance of the intake port 4, and the distance from the entrance of the intake port 4 is always kept constant. The technique disclosed in JP-A-10-156210 will be described with reference to FIG. A rail member 15 is disposed on a columnar frame 16 that is vertically erected on the base frame 14. A roller 17 supported by a support surface 18 is rotatably attached to a side surface near the center of gravity of the conveyor 2.
The starting wheel 19 of the pressing conveyor 2 is slidably fitted in the vertical direction by the rail member 15, and a biasing force is applied from above by a spring or hydraulic pressure. When a conveyed object is conveyed from the left side of the conveyor 3, the pressing conveyor 2 moves up and down and swings, but the starting wheel 19 always keeps a constant distance from the intake 4 by the rail member 15. Hold up and down exercise. As a result, the conveyed object is constantly pressed and conveyed onto the fixed blade 13, so that it is efficiently cut and crushed by the crushing blade.

[0004]

However, the prior art has the following problems. Pieces of the conveyed material, pulverized powder, etc. accumulate between the rail member 15 and the starting wheel 19,
After a short working time, there is a problem that a smooth sliding movement between the starting wheel 19 and the rail member 15 cannot be performed, resulting in poor working efficiency. In addition, when the starting wheel 19 is inserted between the rail members 15 during assembly, the starting wheel 19 cannot be smoothly inserted due to the distortion at the time of manufacturing the columnar frame 16, and a large amount of adjustment is required to remove the distortion. There is a problem that it takes time. Furthermore, there is a problem that the clearance between the rail member 15 and the starting wheel 19 is set with high precision, and the structure becomes complicated, resulting in high cost.

The present invention has been made in view of the above-mentioned problems, and has excellent work efficiency by constantly pressing a conveyed object at a position close to an intake port, and is inexpensive and easy to assemble. It is intended to provide a device.

[0006]

In order to achieve the above-mentioned object, a first aspect of the present invention is to provide a transport table on which a transported object is placed and transported, and a swingable pivot about a predetermined swing axis. A conveyor that is pivoted between the lower stopper and the upper stopper that is pivotally supported on the conveyor and that presses the conveyed object between the pressing point of the conveyor closest to the surface of the carrier and the surface of the carrier. In the transfer device for transferring from the entrance side to the exit side of the conveyor while moving, the swinging shaft of the conveyor has a horizontal line passing through the rotation axis of the conveyor at the conveyor exit side when the conveyor is at the lower stopper position and the upper stopper position. Between the conveyor and the vertical line passing through the position of the center of gravity of the conveyor when the conveyor is at the upper stopper position.

According to the first invention, the swing center axis of the conveyor is located between the lower horizontal line and the upper horizontal line passing through the rotary shaft on the exit side of the conveyor at the lower stopper position and the upper stopper position, and the conveyor is at the upper stopper position. It is arranged in a region closer to the entrance of the conveyor than a vertical line passing through the position of the center of gravity of the conveyor at a certain point. Because the swing center axis is small in the horizontal displacement of the pressing point regardless of where in the area,
Conveyances of various sizes can be pressed efficiently, and the pressing point can be made closer to the inlet. As a result, the conveyed object can be firmly pressed at a position close to the intake port, so that the cutting and crushing efficiency is improved and excellent work efficiency can be obtained. In addition, since a rail member or the like for sliding the conveyor is not used to maintain a constant distance from the intake port at the position of the pressing point, the pieces of the conveyed material and the crushed powder may obstruct the operation. Therefore, a transfer device having a simple structure, a low cost, and excellent assemblability can be obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to FIGS. Note that among the constituent elements in FIGS. 1, 2, 3, and 4, the same elements as those described in FIGS. First, the overall configuration and operation of the transfer device will be described with reference to a detailed view near the transfer completion position of the transfer conveyor 3 shown in FIG. In this figure, the left side of the conveyor 3 is referred to as the conveyor entrance side. The transport conveyor 3 is rotated in the direction of arrow Y by a hydraulic motor or the like (not shown) attached to the transport start shaft 11 that drives the transport conveyor 3, and the trees are placed on the transport conveyor 3. In this state, it is conveyed to the conveyor exit side in the right direction. On the other hand, the conveyor belt 21 of the pressing conveyor 2 is provided with a pressing start shaft 12 for driving the pressing conveyor 2.
In addition, between the pressing and floating shaft 20 disposed at a position facing the pressing and starting shaft 12, the pressing and rotating shaft 20 is rotated in the direction of arrow Z by a hydraulic motor or the like (not shown) attached to the pressing and starting shaft 12. At a position near the intake port 4, the conveyor belt 21 of the pressing conveyor 2
The position at which the distance between the sheet and the upper surface of the conveyor 3 is minimum is referred to as a pressing point P.

The pressing conveyor 2 is pivotally supported on a swing center shaft 8 disposed on the conveyor entrance side, and is clockwise (hereinafter referred to as CW) about the center of the swing center shaft 8. The lower stopper 10 that regulates the lower end position of the pressing point P at a predetermined position that has been swung in the counterclockwise direction (hereinafter referred to as CC)
(Referred to as W) is provided with an upper stopper 9 for regulating the rising end position of the pressing point P at a predetermined position swinging.
FIG. 1 shows a state where the pressing conveyor 2 is in contact with the lower stopper 10. The lower stopper 10 is provided at a position for setting a minimum gap where the pressing point P of the pressing conveyor 2 and the conveying conveyor 3 do not interfere with each other. Also, the upper stopper 9
Is provided at a position such that a tree having a diameter equal to or larger than the maximum allowable diameter of the tree set as the mechanical capacity of the crusher 1 cannot pass through. The tree conveyed by the conveyor 3 moves on the fixed blade 13 while being pressed against the conveyor 3 by the weight of the pressing conveyor 2, and moves to the intake 4 of the crusher 5. As soon as it enters, it is cut and pulverized by the pulverizing blade with the fixed blade 13.

In the following three embodiments, the position of the swing center shaft 8 of the pressing conveyor 2 is specified to achieve the object of the present invention. FIG. 2 shows a first embodiment of the arrangement position of the swing center shaft 8. A horizontal line passing through the pressing floating shaft 20 at the lower stopper 10 position and the upper stopper 9 position of the pressing conveyor 2 is referred to as a lower horizontal line Ls and an upper horizontal line Lu. A horizontal line passing through an intermediate position between the lower horizontal line Ls and the upper horizontal line Lu is defined as a middle horizontal line Lm, and the pressing conveyor 2 when the pressing conveyor 2 is at the upper stopper 9 position.
The perpendicular passing through the center-of-gravity position CG is referred to as a gravity center perpendicular Lc. The swing center axis 8 is disposed on the middle horizontal line Lm and closer to the entrance of the conveyor than the vertical line Lc.

The posture of the pressing conveyor 2 at the position of the lower stopper 10 and the position of the upper stopper 9 is changed to a lower posture Fs and an upper posture Fu.
Indicated by Hereinafter, in FIGS.
s is indicated by a solid line, and the upward posture Fu is indicated by a dotted line. The pressing points P at the positions of the lower stopper 10 and the upper stopper 9 are indicated by a lower pressing point Ps and an upper pressing point Pu. The pressing conveyor 2 has a lower posture Fs around the swing center axis 8.
When moving from to the upper posture Fu, the pressing point P becomes the lower pressing point Ps
To the upper pressing point Pu along the first curve C1.
The horizontal distance from the lower pressing point Ps and the upper pressing point Pu to the vertex of the convex portion of the first curve C1 is indicated by a first displacement amount D1.

In the present embodiment, since the swing center axis 8 is disposed on the middle horizontal line Lm intermediate the lower horizontal line Ls and the upper horizontal line Lu, the pressing floating shaft 20 in the lower posture Fs and the upper posture Fu is provided. Are on the same perpendicular, and the first displacement D1 is small. Thereby, in the posture between the lower posture Fs and the upper posture Fu of the pressing conveyor 2, the distance of the pressing point P from the intake port 4 can be set substantially constant. Then, the pressing conveyor 2 can be brought closer to the inlet 4, and the conveyed object can be firmly pressed regardless of the size of the conveyed object and the swinging position of the pressing conveyer 2. This allows efficient cutting and pulverization regardless of the size of the conveyed object. Further, a rail member or the like for sliding the pressing conveyor 2 to keep the position of the pressing point P constant is not used. As a result, a transport device having a simple structure, low cost, and excellent assemblability can be obtained without the pieces of the transported material and the pulverized powder becoming obstacles to the operation.

Next, FIG. 3 shows a second embodiment of the arrangement position of the swing center shaft 8. The swing center axis 8 is disposed on the lower horizontal line Ls and closer to the conveyor entrance than the vertical line Lc of the center of gravity. When the pressing conveyor 2 moves from the lower position Fs to the upper position Fu around the swing center axis 8, the pressing point P
From the lower pressing point Ps, along the second curve C2, the upper pressing point Pu
Go to The horizontal distance between the lower pressing point Ps and the upper pressing point Pu is indicated by a second displacement amount D2.

In the present embodiment, since the swing center axis 8 is disposed on the lower horizontal line Ls, the pressing and floating shaft 20 in the upper posture Fu is more intense than the pressing and floating shaft 20 in the lower posture Fs. It is located away from the entrance 4. The lower pressing point Ps is set at a position close to the intake 4, and the upper pressing point Pu is set at a position far from the intake 4. As a result, the pressing point P approaches the intake port 4 when the conveyed product is small and the pressing conveyor 2 is at a low position, so that the conveyed product is firmly pressed particularly at a place close to the intake port 4 for the small conveyed product. can do. In the case of the swing center shaft 8 of the present embodiment, particularly small conveyed objects can be efficiently cut and crushed. Also, the pressing point P
No rail member or the like is used to slide the pressing conveyor 2 for maintaining the position at a constant level. As a result, a transport device having a simple structure, low cost, and excellent assemblability can be obtained without the pieces of the transported material and the pulverized powder becoming obstacles to the operation.

FIG. 4 shows a third embodiment in which the swing center shaft 8 is disposed. The swing center axis 8 is disposed on the upper horizontal line Lu and on the conveyor entrance side with respect to the vertical line Lc of the center of gravity. When the pressing conveyor 2 moves from the lower position Fs to the upper position Fu around the swing center axis 8, the pressing point P moves from the lower pressing point Ps to the upper pressing point Pu along the third curve C3. . The horizontal distance between the lower pressing point Ps and the upper pressing point Pu is indicated by a third displacement D3.

In the present embodiment, since the swing center shaft 8 is disposed on the upper horizontal line Lu, the pressing and floating shaft 20 in the lower position Fs is larger than the pressing and floating shaft 20 in the upper position Fu. It is located away from the entrance 4. The upper pressing point Pu is set at a position close to the intake 4, and the lower pressing point Ps is set at a position far from the intake 4. Accordingly, the pressing point P approaches the intake port 4 when the conveyed product is large and the pressing conveyor 2 moves up, so that a particularly large conveyed product can be pressed at a place close to the intake port 4. And, in the case of the swing center shaft 8 of the present embodiment, a particularly large conveyed object can be efficiently cut and crushed. Further, a rail member or the like for sliding the pressing conveyor 2 to keep the position of the pressing point P constant is not used. As a result, the section of the conveyed material and the crushed powder do not hinder the operation, the structure is simple and the
In addition, a transfer device having excellent assemblability can be obtained.

In the three embodiments described above, the swing center axis 8 is set on the middle horizontal line between the lower horizontal line Ls and the upper horizontal line Ld in the first embodiment, and on the lower horizontal line Ls in the second embodiment. In the third embodiment, a case has been described in which they are respectively disposed on the upper horizontal line Ld. In each embodiment, the pressing conveyor 2 moves from the lower position Fs to the upper position Fs.
The locus of the pressing point P until swinging to u is indicated by the first, second, and third curves C1, C2, and C3.
Reference numerals 2 and C3 are suitable for conveying a conveyed object of an arbitrary size, particularly a conveyed object mainly having a small shape, particularly a conveyed object mainly having a large shape. Therefore, when the swing center axis 8 is disposed between the lower horizontal line Ls and the upper horizontal line Lu and in the region closer to the entrance of the conveyor than the vertical line Lc of the center of gravity, Even a conveyed object having a size can be efficiently pressed. Since the pressing conveyor 2 often swings by its own weight, the swing center axis 8 is perpendicular to the center of gravity Lc passing through the center of gravity CG of the pressing conveyor 2 when the pressing conveyor 2 is at the upper stopper 9 position. It is arranged at a position closer to the conveyor entrance side. That is, the swing center axis 8 is arranged so as to swing around the swing center axis 8 by the swing moment due to its own weight. Suppose that the swing center axis 8 is a perpendicular line Lc passing through the center of gravity position CG.
If it is installed on the conveyor exit side, the urging force needs to be applied in the direction by a spring or the like in order to always operate the outlet side of the pressing conveyor 2 in the downward direction, and the structure becomes complicated.

As described above, according to the present invention, the swing center axis of the pressing conveyor is disposed between the lower horizontal line and the upper horizontal line, and in a region closer to the entrance of the conveyor than the vertical line of the center of gravity. Since the swing center axis is disposed closer to the entrance of the conveyor than the perpendicular to the center of gravity, the exit side of the pressing conveyor descends due to the swinging moment of the weight of the pressing conveyor alone. Further, since the swing center axis is disposed between the lower horizontal line and the upper horizontal line, the amount of displacement of the pressing point in the horizontal direction is small, and conveyed objects of various sizes can be efficiently pressed. You can approach the entrance. As a result, the conveyed object can be firmly pressed at a position close to the intake port, so that the cutting and crushing efficiency is improved and excellent work efficiency can be obtained. In addition, since a rail member or the like for sliding the pressing conveyor is not used to maintain a constant distance from the intake port at the position of the pressing point, the pieces of the conveyed material and the crushed powder may hinder the operation. Thus, a transfer device which is simple, inexpensive, and excellent in assemblability can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the configuration and operation of the present invention.

FIG. 2 is an explanatory diagram of the first embodiment.

FIG. 3 is an explanatory diagram of a second embodiment.

FIG. 4 is an explanatory diagram of a third embodiment.

FIG. 5 is an explanatory diagram of an arrangement area of a swing center axis.

FIG. 6 is an explanatory view of a crusher.

FIG. 7 is an explanatory diagram of a conventional pressing technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pulverizer, 2 ... Pressing conveyor, 3 ... Conveyor, 4 ... Inlet, 5 ... Pulverizer, 6 ... Blower duct, 7
... Engine, 8 ... Swing center axis, 9 ... Top stopper, 10 ...
Lower stopper, 11: transport start axis, 12: pressing start axis, 1
3 ... fixed blade, 14 ... base frame, 15 rail members, 1
6 ... columnar frame, 17 ... roller, 18 ... support surface, 19
... Starting wheel, 20 ... Pressing idle shaft, Fs ... Down posture, Fu ... Up posture, Ls ... Bottom horizontal line, Lu ... Upper horizontal line, Lm ... Middle horizontal line, Lc ... Center of gravity vertical line, P ... Pressing point, Ps ... Lower pressing point , P
u: Upper pressing point.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Akira Gamo 2-142-1, Sakuragaoka, Higashiyamato-shi, Tokyo F-term (reference) in Komatsu Zenoa Co., Ltd. 3F023 AA01 BA02 BB05 BC01 BC08 EA01 4D067 EE04 GA11 GB05

Claims (1)

[Claims] A transfer table for mounting and transporting a conveyed object; a lower stopper (10) and an upper stopper (10) that are pivotally supported around a predetermined swing shaft (8) and that regulate a swing range. 9) and a conveyor (2) that swings between the conveyors.The conveyor has a pressing point (P) closest to the surface of the conveyor and a conveyor (2). In the transfer device for transferring from the entrance side to the exit side, the swing shaft (8) of the conveyor (2) is located at the conveyor exit side when the conveyor (2) is at the lower stopper (10) position and the upper stopper (9) position. Horizontal line passing through the conveyor's axis of rotation (20)
(Ls, Lu) and a perpendicular (L) passing through the center of gravity (CG) of the conveyor (2) when the conveyor (2) is at the upper stopper (9) position.
A transfer device, which is disposed in a region closer to the conveyor entrance than c).