JP2002356217A - Sprocket wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an improved sprocket wheel applied to a roller chain conveyor intended for horizontal transportation and transfer of a heavy object. SOLUTION: The sprocket wheel 1 is applied to the roller chain conveyor 2 for transmitting power for transportation and movement of the heavy object A. The sprocket wheel is characterized by that it comprises a wheel body 11 and a fixed plate 12 for attaching and fixing the wheel body 11, and the wheel body 11 is formed as a divided type so it can be replaced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved sprocket wheel applied to a roller chain conveyor for carrying and transferring heavy objects horizontally.

[0002]

2. Description of the Related Art Conventionally, in a roller chain conveyor used for carrying heavy objects horizontally, a sprocket wheel (drive gear) is provided as a power transmission means for moving an endless chain. Generally, if the object to be conveyed is large and heavy, it is necessary to arrange a large sprocket wheel made of iron corresponding to this.

However, during operation of the roller chain conveyor described above, if the teeth around the large sprocket wheel made of iron are damaged or abraded and cannot be used anymore, this damage is caused. It was not possible to repair and use only the teeth received, but it was necessary to replace the entire sprocket wheel with a new one and use it. In other words, in order to replace the entire large sprocket wheel made of iron, not only the material cost but also the work of removing and installing the endless chain and exchanging the sprocket wheel on a large scale using a crane or chain block must be performed. It takes an enormous amount of labor and man-hours.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the conventional sprocket wheel, and has a problem in that a wheel having a damaged tooth portion is provided. It is an object of the present invention to provide a sprocket wheel in which a replaceable divided wheel body is fixed to a fixed plate so that only the body can be replaced.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a sprocket wheel applied to a roller chain conveyor for transmitting power for transporting and moving a heavy object, comprising a wheel body and a sprocket wheel. The wheel body is a sprocket wheel characterized in that the wheel body is replaceably formed in a split type.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the sprocket wheel of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a side view showing a sprocket wheel of the present invention, FIG. 2 is a side view showing a wheel body used in the present invention, FIG. 3 is a side view showing a fixing plate used in the present invention, and FIG. FIG. 2 is a side view showing an embodiment of the present invention.

The present invention, as shown, is a sprocket wheel 1 applied to a roller chain conveyor 2 for transmitting power for conveying and moving a heavy object,
The wheel body 11 includes a wheel body 11 and a fixing plate 12 for mounting and fixing the wheel body 11. The wheel body 11 is formed in a replaceable split type. Also,
The wheel body 11 that is replaceably fixed to the fixed platen 12 is divided into three to eight parts.
, 11-3,.... The split-type wheel body 11 is characterized by being applied to the roller chain conveyor 2 that transports the log A when the log A is sawn.

According to the present invention, the roller chain conveyor 2
During operation, the teeth 111 provided around the wheel body 11 of the large sprocket wheel 1 made of iron were partially damaged or abraded, so that they could not be used. Wheel body 1 having teeth 111
1 divided pieces 11-1, 11-2, 11-3,...
Can be repaired simply by replacing any of the
There is no need to replace the entire sprocket wheel 1, and the labor and man-hours required for removing and attaching the roller chain 21 and attaching / detaching to / from the rotary bearing 13, as well as material costs, can be greatly reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a sprocket wheel 1 of the present invention has, for example, a divided piece 1 divided into four equal parts by a dividing line x.
A wheel main body 11 composed of 1-1, 11-2, 11-3, and 11-4 is fixed to a fixed plate 12 shown in FIG. That is, the wheel main body 11 has an annular shape as a whole, and its outer peripheral edge has teeth 111 and tooth grooves 11.
2 are alternately formed, and a fixing hole 113 for fastening and fixing the fixing plate 12 is formed near the inner peripheral edge thereof.

The fixed platen 12 for fixing the wheel body 11 has a disk shape as shown in FIGS.
At the center thereof, a boss 125 is formed to be attached to the rotation shaft 126, and a reinforcing rib 124 is formed radially from the boss 125. And the boss 1 of the fixed platen 12
The rotating shaft 126 fixed to 25 is rotatably fixed to the gantry by the bearing 13. In the vicinity of the outer peripheral edge of the fixing plate 12, a fixing hole 121 is formed at a position corresponding to the fixing hole 113 formed in the vicinity of the inner peripheral edge of the wheel body 11.
Are drilled.

A bolt 12 is provided between the fixing hole 121 of the fixing plate 12 and the fixing hole 113 of the wheel body 11.
2, the sprocket wheel 1 in which the wheel body 11 is integrally attached to the fixed platen 12 is completed as shown in FIG. The mounting form of the wheel body 11 and the fixed platen 12 is not limited to the case where the wheel body 11 is fixed by one fixed platen 12, and if necessary, the wheel body 11 is fixed to two fixed platen 1s.
It is also possible to pinch them and fix them together. As a matter of course, the divided pieces 11-1, 11-2, 11-3, and 11-4 of the wheel body 11 are provided around adjacent divided pieces with a dividing line x therebetween. The teeth 111 and the tooth space 112 are assembled so as to keep a constant interval.

The weight of the wheel body 11 of the sprocket wheel 1 can be adjusted by dividing the wheel body 11 fixed to the fixed platen 12 into four equal parts as described above, or into three equal parts, five to eight equal parts, or the like. The number of divided pieces may be set accordingly. That is, the divided pieces 11-1, 11-2, 11-3, 11-4,... Of the damaged wheel body 11.
When replacing any one of the above, it is important that the weight of one divided piece is set to such an extent that it can be easily removed and attached by human power.

For example, as shown in FIG. 4, the case where the split-type wheel body 11 of the present invention is applied to the roller chain conveyor 2 of a sawmill B for cutting a log A will be described. That is, in the sprocket wheel 1 that drives the roller chain 21 that horizontally moves the log A in the direction of the arrow, the wheel body 11 of the sprocket wheel 1
When the divided piece 11-1 is damaged,
To replace -1, first replace sprocket wheel 1
Is rotated to a position where the split piece 11-1 is not meshed with the roller chain 21 (the position on the left side of the sprocket wheel 1 in the figure), and the split piece 11-1 is removed from the fixed plate 12 in the direction of the arrow. And a new split piece 1
Instead of 1-1, it can be mounted on the fixed board 12 from the direction of the arrow. That is, the roller chain 21 is connected to the other divided pieces 11-2, 11-3, and 11- of the sprocket wheel 1.
4, only the divided piece 11-1 can be removed and replaced while it is still engaged with the fourth piece.

Usually, a sprocket wheel of a roller chain conveyor used for transferring a log A at a sawmill is made of cast iron, having a diameter of 800 to 1,000 mm and a thickness of 30 to 30 mm.
Since it is a large and heavy one with a size of about 40 mm, it is necessary to replace the sprocket wheel on a large scale using a crane or a chain block. Only the damaged piece of the wheel body 11 can be replaced, and repair work can be performed very easily.

As described above, the split piece 1 of the wheel body 11
The replacement work of 1-1 is performed by removing the bolt 122 fastening the fixed plate 12 and the split piece 11-1 and manually inputting the split piece 1
1-1 can be easily removed, and the replacement of the new divided piece 11-1 can be easily performed by human power.
As in the related art, there is no need to use excessive labor and man-hours for replacing the entire heavy sprocket wheel, and the lumber apparatus B can be quickly restored.

That is, according to the present invention, during operation of the roller chain conveyor, if the teeth around the large sprocket wheel made of iron are lost or worn, and the roller chain conveyor cannot withstand use. It can be repaired by replacing only the split pieces of the wheel body with damaged teeth, so there is no need to replace the entire sprocket wheel, and not only the material cost but also the removal and installation of the roller chain and the rotation bearing This has the effect of greatly reducing the labor and man-hours required for the attaching and detaching work of the device.

[Brief description of the drawings]

FIG. 1 is a side view showing the sprocket wheel of the present invention.

FIG. 2 is a side view showing the wheel body used in the present invention.

FIG. 3 is a side view showing the fixing plate used in the present invention.

FIG. 4 is a side view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sprocket wheel 11 Wheel main body 11-1 Split piece 11-2 Split piece 11-3 Split piece 11-4 Split piece 111 Teeth 112 Tooth groove 113 Fixing hole 12 Fixing plate 121 Fixing hole 122 Bolt 123 Nut 124 Reinforcement rib 125 Boss 126 Rotary shaft 13 Bearing 2 Roller chain conveyor 21 Roller chain A Heavy material (log) B Sawmill x Division line

Claims (3)

[Claims] 1. A sprocket wheel applied to a roller chain conveyor for transmitting power for transporting and moving a heavy object, comprising a wheel body and a fixing plate for mounting and fixing the wheel body, wherein the wheel body comprises: A sprocket wheel characterized in that it is formed so as to be replaceable and divided. 2. The sprocket wheel according to claim 1, wherein the wheel body fixed so as to be exchangeable to the fixed platen is constituted by divided pieces divided into three equal parts to eight equal parts. 3. The sprocket wheel according to claim 1, wherein the split-type wheel main body is applied to a roller chain conveyor that transports the raw wood when the raw wood is sawn.