JP2004052918A - Split drive gear and walking beam elevating device using the same - Google Patents

Abstract

A split drive gear capable of easily and economically exchanging a gear part and exchanging a gear part even in a narrow place while avoiding interference with a bearing or the like, and a walking beam using the same. Providing equipment.
A split-type drive gear in which a flange portion (1a) extending outward is formed on the outer periphery of a boss (1) locked on a rotating shaft (10), and an annular gear (2) is detachably mounted on the flange portion (1a). A walking beam lifting / lowering apparatus using a split drive gear in which such a split drive gear is incorporated as a drive gear for a walking beam lifting / lowering apparatus.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a split-type drive gear capable of easily and economically exchanging a gear portion and exchanging a gear portion even in a narrow place while avoiding interference with a bearing or the like, and a walking beam using the same. The present invention relates to a lifting device.
[0002]
[Prior art]
Conventionally, large drive gears having a diameter of 1 m or more have been used for various devices. However, if they are used for a long period of time, wear and breakage will occur, and it will be necessary to replace them. In this case, it has been usual to replace the entire gear with a new gear.
[0003]
However, it is a large special size product, and replacing the entire gear is expensive, and it takes a long time from ordering to delivery. There were problems such as stopping the machine.
Further, in the walking beam lifting and lowering device used in steel factories and the like, a large drive gear is used, but when replacing the drive gear, the space is small and the bearings interfere with the gear. The gears must be removed after removing all the peripheral devices because the gears cannot be removed in the axial direction, and there is a problem that the replacement operation is complicated and takes a long time.
[0004]
[Problems to be solved by the invention]
The present invention solves the conventional problems as described above, and allows replacement of only the gear portion on the outer periphery, allows easy and economical replacement of the gear portion, and avoids interference with a bearing or the like. The present invention has been completed with the object of providing a split drive gear capable of exchanging a gear portion easily and in a short time even in a narrow place, and a walking beam elevating device using the same.
[0005]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problem. The present invention provides a method in which a flange portion extending outward is formed on an outer periphery of a boss locked on a rotating shaft, and an annular gear is detachably mounted on the flange portion. The present invention provides a walking beam lifting / lowering apparatus using a split drive gear, wherein the split drive gear is characterized in that the split drive gear is incorporated as a drive gear for a walking beam lifting / lowering apparatus.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings as an example.
FIG. 1 is a sectional view of a split-type drive gear according to the present invention, and FIG. 2 is a front view of the split type drive gear. In the figure, reference numeral 1 denotes a boss provided with a hole 1b through which a rotary shaft 10 is inserted at the center. Is an annular gear provided with teeth of a predetermined pitch on the outer peripheral surface. In the present invention, an outwardly extending flange portion 1a is formed on the outer periphery of the boss 1 locked on the rotating shaft 10, and the annular gear 2 is detachably attached to the flange portion 1a by a connecting member 3 such as a bolt. It has been attached to.
[0007]
In the drawing, the boss 1 and the annular gear 2 are not directly connected, but are integrated through another disc-shaped connecting plate 4 therebetween. Can be arbitrarily designed depending on the size of the gears and the like, and can be freely designed by using two or more connecting plates 4 or not using the connecting plates 4.
[0008]
In addition, a flange portion 2a that expands inward is formed on the inner periphery of the annular gear 2, and is configured to be detachably attached to the flange portion 1a of the boss 1 and the connecting member 3. Further, as shown in the figure, in the case where the connecting plate 4 is interposed, each flange portion 1a, 2a and the connecting plate 4 are detachably mounted by the connecting member 3.
[0009]
As described above, in the split-type drive gear according to the present invention, the flange portion 1a extending outward is formed on the outer periphery of the boss 1 locked on the rotating shaft 10, and the annular gear 2 is bolted to the flange portion 1a. And the like, so that the entire gear can be replaced as in the prior art even if the teeth need to be replaced due to wear or damage during use, for example. It is not necessary to replace the ring gear 2 only. In this case, the operation is simply to loosen the bolt as the connecting member 3 and replace it with a new annular gear, and it is possible to easily replace the ring gear in a very short time. It will also be able to demonstrate the nature.
[0010]
Next, a description will be given of a walking beam lifting / lowering apparatus using the above-mentioned split drive gear.
FIG. 3 shows an apparatus for elevating a walking beam for transporting a slab in a heating furnace of an ironworks. In FIG. 3, reference numeral 20 denotes a travel beam, and reference numeral 21 denotes an eccentric tire for moving the travel beam 20 up and down. The split drive gear is mounted coaxially with the rotating shaft 10 of the eccentric tire 21, and the split drive gear meshes with a spur gear 23 mounted on the drive shaft 22 to be driven to rotate. ing.
[0011]
On the other hand, in the walking beam lifting / lowering device, the bearing built in the eccentric tire 21 needs to be replaced due to damage by a load or the like, or the annular gear 2 needs to be replaced due to wear or the like.
However, conventionally, the installation place of the elevating device is very narrow and there is no space margin, and there are bearings 24a and 24b of each rotary shaft 10 and the drive shaft 22, and when the drive gear is pulled out in the axial direction, interference occurs. Therefore, it is necessary to remove the drive gear after removing all the peripheral devices, including the removal of the bearings 24a and 24b, the removal of electrical components, and the like, and the replacement of bearings and gears is complicated and takes a long time. Was. In particular, the drive gear has a very large diameter of 1 m or more, and its removal operation is the most complicated and requires a long time.
[0012]
In the present invention, a flange portion 1a is formed on the outer periphery of a boss 1 which is locked to a rotating shaft 10 as a drive gear, and an annular gear 2 is connected to the flange portion 1a by a connecting member 3 such as a bolt. Since the detachable detachable type is incorporated, the detaching operation can be easily performed without interfering with the bearing or the like by the following procedure.
In other words, if the connecting member 3 for fixing the annular gear 2 is removed to be in a free state, the annular gear 2 is shifted in a direction not interfering with the bearing 24a or the like and then comes off the rotary shaft 10, so that the annular gear 2 can be easily formed. It can be removed. Therefore, the removal work can be performed in a very short time without having to remove the peripheral devices such as the bearings and the electrical components as in the related art.
It has been confirmed that the split-type gear of the present invention can reduce the replacement time to half or less compared to the conventional drive gear replacement operation.
[0013]
【The invention's effect】
As is clear from the above description, in the present invention, only the gear portion on the outer periphery can be replaced, the gear portion can be replaced easily and economically, and even in a narrow place by avoiding interference with a bearing or the like. The replacement of the gear portion can be performed easily and in a short time.
Therefore, the present invention greatly contributes to industrial development as a split-type drive gear that has eliminated the conventional problems and a walking beam elevating device using the same.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating an embodiment of the present invention.
FIG. 2 is a front view showing the embodiment of the present invention.
FIG. 3 is a perspective view showing a walking beam elevating device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Boss 1a Flange part 2 Annular gear 2a Flange part 3 Connecting member 4 Connecting plate 10 Rotating shaft 20 Travel beam 21 Eccentric tire 22 Drive shaft 24a Bearing 24b Bearing

Claims (2)

A split-type drive gear, wherein a flange portion extending outward is formed on an outer periphery of a boss locked on a rotating shaft, and an annular gear is detachably mounted on the flange portion. A walking beam lifting / lowering apparatus using a split driving gear, wherein the split driving gear according to claim 1 is incorporated as a driving gear of a walking beam lifting / lowering apparatus.

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