JP2000008118A - Device for carrying columnar body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying device of a columnar body, in which heat treatment of the columnar body is uniformly executed and the efficiency of the heat treatment can be improved. SOLUTION: In the columnar body carrying device for executing the heat treatment of the columnar body 1, which has a truck body 3 on which the columnar body 1 is laid and carries the columnar body 1 into the inner part of a heat treatment apparatus 2, the truck body 3 is provided with a supporting means S2 for supporting the columnar body 1 so as to be freely rotatable around the axial center of the columnar body 1, a driving means S3 for rotating the columnar body 1 and a power transmitting means S4 for transmitting the power with the driving means S3 to the supporting means S2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation device for a column having a bogie main body on which a column is to be placed, for carrying the column into a heat treatment apparatus and heat-treating the column.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional columnar transfer device, for example. That is, the conventional columnar body transporting device is for moving inside the heat treatment apparatus 2 while supporting the columnar body 1 and performing a predetermined heat treatment on the columnar body 1. In this case, for example, a plurality of sleepers 30 formed in a wedge shape are arranged along the longitudinal direction X of the carriage main body 3 on the upper part of the carriage main body 3 of the transport device, and the columnar body 1 is mounted thereon. .

[0003]

However, according to the above-mentioned conventional apparatus, the columnar body 1 is always kept in the same posture during the heat treatment. Therefore, when the weight of the columnar body 1 is large or when the pipe thickness is small, The cross-sectional shape may be deformed or bent due to its own weight. This is especially true for
This becomes more significant as the heat treatment temperature increases. Therefore, in the case of using the conventional transport device, in order to prevent deformation of the cross-sectional shape, the support member 31 is mounted inside the columnar body 1 during the heat treatment, or the interval between the sleepers 30 supporting the columnar body 1 is shortened. To secure as many support points as possible. For this reason, in the conventional transport apparatus, the columnar body 1 does not rotate relative to the heat treatment apparatus 2, and the heating temperature of the columnar body 1 varies depending on the portion, and as a result, uniform heat treatment may not be performed. In addition, as a result of taking time and effort for attaching and detaching the support member 31 and increasing the number of support points, the amount of heat diffused from the columnar body 1 through the crossties 30 increases, and disadvantages such as deterioration of heat treatment efficiency also occur. Was.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to provide a columnar-body transfer device capable of uniformly performing a heat treatment on the columnar body and improving the heat treatment efficiency. .

[0005]

(Structure 1) According to a first aspect of the present invention, there is provided a transporting apparatus for a columnar body, wherein the columnar body is mounted on a bogie main body on which the columnar body is mounted. It is characterized in that it comprises a supporting means rotatably supporting around a core, a driving means for rotating the columnar body, and a power transmitting means for transmitting the power by the driving means to the supporting means. . (Operation / Effect) As in the present configuration, the columnar body is supported on the bogie main body by using the supporting means, the driving means, and the power transmission means, and the columnar body is rotatable around its own core, thereby providing the columnar body. Can be uniformly performed over the whole. In addition, since the columnar body is rotated, even when the columnar body is easily deformed during the heat treatment, deformation of the cross-sectional shape or bending deformation in the longitudinal direction of the columnar body hardly occurs, and the quality of the product is greatly improved.
By rotating the columnar body, it is not necessary to mount a member for maintaining the cross-sectional shape during the heat treatment inside the columnar body, and the work efficiency during the heat treatment is improved. Furthermore, as a result of preventing the deformation of the columnar body, the number of support members that support the columnar body can be reduced, and as a result,
The diffusion of heat generated through the support member is reduced, and the heat treatment efficiency is improved. If the number of supporting members is reduced, the structure of the transfer device is simplified, and equipment costs or maintenance costs can be reduced.

(Structure 2) A columnar body conveying apparatus according to the present invention comprises:
As described in claim 2, the support means includes a rotating bearing and a roller member supported by the rotating bearing,
A cooling device can be provided in the rotating bearing and the power transmission means. (Operation / Effect) If the support means is constituted by a rotary bearing and a roller member, the columnar body can be easily rotated.
Moreover, since the roller member and the columnar body are in linear contact with each other and the contact area between them is extremely small, heat diffusion via the roller member is minimized. Therefore, the total amount of required energy is reduced, and the heat treatment efficiency is improved. On the other hand, since a cooling device is provided for the rotary bearing and the power transmission means, the transfer device has heat resistance, and a heat treatment at a higher temperature or a heat treatment for a longer time can be performed. Heat treatment under various conditions.

(Structure 3) The columnar body transporting device of the present invention
As described in the second aspect, a protective layer made of a heat insulating material can be provided in other portions except for the support means. (Operation / Effect) As in the present configuration, by providing a protective layer in a portion other than the support means that comes into contact with the columnar body, the heat resistance of the transfer device can be further improved. Therefore, the selection range of the heat treatment conditions can be further expanded, and the durability of the transfer device can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Summary) As shown in FIGS. 1 to 3, a columnar body transport apparatus according to the present invention mounts a steel pipe column 1a as a columnar body 1 formed by, for example, casting or rolling. This is a device that carries in / out the heat treatment device 2 that heat-treats the columnar body 1 as it is. The present apparatus mainly includes a carriage body 3 for carrying in / out the columnar body 1 and a traveling means S1,
And a support means for supporting the columnar body 1; and a driving means S3 for rotating the supporter S2 to rotate the columnar body 1 at a predetermined speed and a power transmission means S4.

(Truck Body and Traveling Means) In the present invention, the columnar body 1 is heat-treated while being placed on the carriage body 3. The bogie main body 3 has a traveling means S1 and is configured to be able to move on and off a rail 4 laid between the inside and outside of the heat treatment apparatus 2. The traveling means S1
For example, as shown in FIG. 2, a wheel 5 made of a metal having heat resistance and a first
The wire 6a and the second wire 6b, and further, the first
A bogie motor 7 for applying a tensile force to the wire 6a and the second wire 6b. The first wire 6a and the second wire 6b are both attached to the end of the bogie main body 3. The first wire 6a is for carrying out the carriage body 3 from the heat treatment apparatus 2, and the second wire 6a
“b” is for carrying the carriage body 3 into the heat treatment apparatus 2. The first wire 6a and the second wire 6
b can be driven in any direction by a bogie motor 7 and a drive pulley 8 provided outside the heat treatment apparatus 2.
In particular, when attaching the second wire 6b to the bogie main body 3, as shown in FIG. 2, the second wire 6b is attached via a return pulley 10 provided on the floor 9 outside the heat treatment apparatus 2. With this configuration, the first wire 6a and the second wire 6a
The carriage body 3 can be easily loaded and unloaded by simply applying a tensile force to both of the wires 6b.

FIG. 1 or FIG. 2 shows a state in which a plurality of bogie main bodies 3 are connected. With this configuration, the bogie body 3 having an arbitrary length can be configured according to the length of the columnar body 1 to be heat-treated, while using the bogie body 3 having a single shape. Of course, there is no problem even if the carriage main body 3 is formed of a single member. In addition, the bogie main body 3 and the traveling means S1 are provided with a protective layer 11 using a heat insulating material or the like in order to increase heat resistance. As the heat insulating material, for example, refractory brick, Teflon, or the like can be used.

(Supporting Means) The bogie main body 3 is provided with supporting means S2 for mounting the columnar body 1. Here, the support means S2 includes a roller member 12 and a rotary bearing 13 that rotatably supports the roller member 12. As shown in FIG. 3, in order to support the columnar body 1 at several positions in the longitudinal direction X of the bogie main body 3, a pair of the roller members 12 are provided at each position. The pair of roller members 12 are arranged along a direction perpendicular to the longitudinal direction X of the bogie main body 3. The distance between the pair of roller members 12 is set in a range where the columnar body 1 does not contact the upper surface of the bogie main body 3. In addition, each roller member 12
The roller member 12 from the longitudinal direction X of the carriage body 3
Are supported using two rotating bearings 13 so as to sandwich the same.

(Driving Means and Power Transmission Means) The roller member 12 is rotated by driving means S3 and power transmission means S4. The power transmission means S4 includes a rotating shaft 14 for integrally rotating the plurality of roller members 12 adjacent in the longitudinal direction X as shown in FIG. The rotating shaft 14 is configured by connecting a plurality of rotating shaft members 14 a with a coupling 15. Two rotating shafts 14 are attached to the bogie main body 3 in a state where the two are parallel to each other as shown in FIG.

A driving means S3 is provided at the end of these two rotating shafts 14. The driving means S3 includes a driving motor 16
And the speed reduction mechanism 17. For example, as shown in FIG. 3, the speed reduction mechanism 17 includes a first gear 17 a provided on the drive motor 16 side and a second gear 17 b provided on one end of the rotating shaft 14. The columnar body 1 is rotated by rotating the one rotating shaft 14 by the speed reduction mechanism 17, and the other rotating shaft 14 is freely rotated by a frictional force with the columnar body 1.

The rotation speed of the drive motor 16 is appropriately changed depending on the dimensions and properties of the columnar body 1 to be supported. That is,
When the weight of the columnar body 1 is large and may be deformed due to the weight of the columnar body 1 during heating, or even when the weight is not large, the columnar body 1 may be easily deformed due to a small tube thickness. In some cases, the rotation speed of the roller member 12 is set high. On the other hand, when the weight of the columnar body 1 is not so large and has a sufficient tube thickness, the rotation speed of the roller member 12 can be set low. Further, the rotation direction of the roller member 12 may be a single direction, or may be alternately reversely rotated at a predetermined angle. If the rotation axis of the roller member 12 is not parallel to the axis of the columnar body 1, the columnar body 1 moves in any direction along the longitudinal direction X of the bogie main body 3 with the rotation of the roller member 12. Although there is a case where the columnar body 1 is displaced, if the reverse rotation is performed at every predetermined rotation angle, the movement of the columnar body 1 can be kept within a certain range. The roller member 12 includes:
It can be made of various materials having heat resistance. For example, various metals, ceramics, ethylene tetrafluoride resin, and the like can be used.

(Cooling device) In the transfer device according to the present invention,
The power transmission means S4 and the rotary bearing 13 are provided with a cooling device for actively cooling themselves. FIG. 4 shows three cooling passages R, that is, a first cooling passage R1 for the rotating shaft 14 and a second cooling passage R1 for the rotating bearing 13.
The cooling passage R2 and the rotary bearing 13 are connected to the bogie body 3
An example is shown in which a cooling channel for the bearing base 18 for fixing to the base is provided. For example, cooling water is circulated as a refrigerant in these cooling channels R1, R2, and R3. The supply of the cooling water is performed using a supply pump P provided outside the heat treatment apparatus 2, and the cooling water supplied to each of the cooling channels R1 to R3 is
After circulating through each of the cooling flow paths R1 to R3, it is returned to the supply pump P again. A flow control valve 19 is provided at the outlet side of the supply pump P and at the base end of each of the cooling channels R1 to R3 to adjust the supply amount of the cooling water. From the supply pump P to the rotating shaft 14, or the supply pump P
To the rotary bearing 13 and the section from the supply pump P to the bearing base 18 are connected by using a heat-resistant hose or pipe.

The inside of the rotary shaft 14 has, for example, a double pipe structure, and cooling water is supplied from one end of the rotary shaft 14 to the inner pipe 20 of the double pipe. After the supplied cooling water reaches the other end of the rotating shaft 14, it flows into the outer tube 21 of the double pipe, and is returned to the end on the side to which the cooling water was supplied first. Therefore, a rotary joint 24 having a cooling water supply port 22 and a discharge port 23 is provided at an end of the rotating shaft 14. The supply port 22 and the discharge port 23 are arranged such that the supply port 22 and the discharge port 23 can take a fixed posture regardless of the rotation of the rotary shaft 14.
The part on the side provided with is configured to be rotatable relative to the part connected to the rotating shaft 14. In the present embodiment, two rotary shafts 14 are provided at the upper part of the bogie main body 3. Here, the discharge port 23 of one rotary shaft 14 is connected to the supply port 22 of the other rotary shaft 14. The cooling water is supplied to each rotating shaft 14 in series.

The supply of cooling water to the rotary bearing 13 is performed in the same manner. That is, as shown in FIG.
4 are connected in series to form one second cooling channel R2. Specifically, a cooling water supply port 25 and a discharge port 26 are provided in each rotating bearing 13,
Rotating bearings 13 adjacent along the longitudinal direction X of the rotating shaft 14
Connect each other in series with a heat-resistant hose or the like. Further, as for the bearing base 18 that supports the rotary bearing 13, all the bearing bases 18 are connected in series similarly to the rotary bearing 13 to form one third cooling channel R3.

A temperature measuring means 27 for measuring the temperature of the cooling water returned from each of the cooling channels R1 to R3 is provided at a portion of the supply pump P on the side where the cooling water returns.
Based on the temperature detected by the temperature measuring means 27, the flow rate of the cooling water to be supplied to each of the cooling channels R1 to R3 is determined. For example, when the detected temperature of any one of the cooling channels R1 to R3 is high, the flow control valve 19 is opened to increase the supply amount of the cooling water to the cooling channels R1 to R3. Conversely, when the detected temperature of any one of the cooling channels R1 to R3 is low, the flow control valve 19 can be throttled to some extent. The cooling water returned to the supply pump P is led to a radiator tank 28 attached to the supply pump P, where the cooling water is cooled to a predetermined temperature, and then cooled in each of the cooling channels R1 to R
Resupply to 3.

(Effect) With the column transport device according to the present invention, the column 1 can be rotated at an arbitrary rotation speed during the heat treatment of the column 1, so that the heated column 1 can be rotated. Can be prevented from being deformed or the columnar body 1 being bent and deformed in the longitudinal direction X of the columnar body 1. Further, by rotating the columnar body 1 during the heat treatment, a uniform heat treatment can be performed over the entire columnar body 1. Furthermore, if the bending deformation of the columnar body 1 is reduced, the interval between the roller members 12 provided along the longitudinal direction X of the columnar body 1 can be increased. As a result, not only can the number of roller members 12 be reduced to simplify the structure of the apparatus, but also the amount of heat diffused through the roller members 12 out of the amount of heat held by the columnar body 1 is reduced. Therefore, there is an advantage that the heat treatment efficiency is improved.

In the description of the appended claims, reference is made to the drawings, and in order to facilitate comparison with the drawings, the reference numerals are used. However, the present invention is not limited to the configuration shown in the accompanying drawings. Absent.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the external appearance of a columnar transfer device according to the present invention.

FIG. 2 is a side view showing the columnar transfer device according to the present invention.

FIG. 3 is a plan view showing a columnar transfer device according to the present invention.

FIG. 4 is an explanatory view showing a cooling device of the transfer device.

FIG. 5 is a perspective view showing the external appearance of a conventional columnar transfer device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Columnar body 2 Heat treatment apparatus 3 Bogie main body 11 Protective layer 12 Roller member 13 Rotation bearing S2 Support means S3 Drive means S4 Power transmission means

Claims (3)

[Claims] 1. A truck body (3) on which a columnar body (1) is placed.
A transport device for transporting the columnar body (1) into the inside of the heat treatment apparatus (2) to heat-treat the columnar body (1), wherein the carriage body (3) includes: Support means (S2) for rotatably supporting the columnar body (1) around the axis of the columnar body (1); and driving means (S3) for rotating the columnar body (1).
And the power generated by the driving means (S3)
And a power transmission means (S4) for transmitting to (2). 2. The support means (S2) includes a rotating bearing (1).
2. The rolling bearing according to claim 1, comprising a roller member supported on the rotating bearing, and a cooling device provided on the rotating bearing and the power transmission means. 3. Column-shaped transfer device. 3. The apparatus for transporting a columnar body according to claim 1, wherein a protective layer (11) made of a heat insulating material is provided on a portion other than the support means (S2).