JPH0448974B2 - - Google Patents
Info
- Publication number
- JPH0448974B2 JPH0448974B2 JP18525087A JP18525087A JPH0448974B2 JP H0448974 B2 JPH0448974 B2 JP H0448974B2 JP 18525087 A JP18525087 A JP 18525087A JP 18525087 A JP18525087 A JP 18525087A JP H0448974 B2 JPH0448974 B2 JP H0448974B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- jacket
- axle box
- water jacket
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000498 cooling water Substances 0.000 claims description 78
- 238000001816 cooling Methods 0.000 claims description 11
- 230000000052 comparative effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Mounting Of Bearings Or Others (AREA)
Description
産業上の利用分野
この発明は、軸受装置の冷却装置に関する。
従来の技術とその問題点
連続鋳造用駆動ロールの軸受装置には、軸受を
冷却するために、冷却装置が設けられる。この冷
却装置は軸箱の冷却水流入穴と冷却水流出穴の間
に冷却水ジヤケツトが形成されたものであり、ジ
ヤケツトがスラブからの熱を受ける側に配置され
るが、ジヤケツトの形状および冷却水の流速（流
量）によつてはジヤケツト内に気泡が滞留し、熱
膨張のためにジヤケツトの部分が破損することが
ある。
この発明の目的は、上記の問題を解決し、冷却
水ジヤケツト内に気泡が滞留しない軸受装置の冷
却装置を提供することにある。
問題点を解決するための手段
この発明による軸受装置の冷却装置は、軸箱に
冷却水流入穴、冷却水流出穴およびこれらの間の
冷却水ジヤケツトが形成されている軸受装置の冷
却装置において、
冷却水ジヤケツトが、冷却水流入穴に続く入口
部と、冷却水流出穴に続く出口部と、入口部と出
口部の間の中央部とからなり、冷却水ジヤケツト
の中央部の軸箱軸線方向の幅がほぼ一定であり、
入口部の軸箱軸線方向の幅が冷却水流入穴側から
中央部まで徐々に広くなり、出口部の軸箱軸線方
向の幅が冷却水流出穴側から中央部まで徐々に広
くなつており、冷却水ジヤケツトの全ての部分に
おいて冷却水の流速が35cm／sec以上となつてい
ることを特徴とするものである。
作 用
冷却水ジヤケツトの中央部の軸箱軸線方向の幅
がほぼ一定であり、入口部および出口部の軸箱軸
線方向の幅がそれぞれ冷却水流入穴側および冷却
水流出穴側から中央部まで徐々に広くなつている
ので、冷却水流入穴、冷却水ジヤケツトおよび冷
却水流出穴の間の断面積変化が小さく、しかも冷
却水ジヤケツトの全ての部分において冷却水の流
速が35cm／sec以上となつているから、冷却水ジ
ヤケツト内に気泡が滞留することがない。
実施例
第１図〜第３図は、第１実施例を示す。
軸受装置の軸箱１０は上部半体１０ａと下部半
体１０ｂがボルト１１により固定されたものであ
り、軸箱１０の内側に軸受１２が取付けられる。
そして、軸箱１０内に、次のように、冷却装置が
設けられている。
軸箱下部半体１０ｂの片側および上部半体１０
ａの一端部に冷却水流入穴１３が形成され、下部
半体１ｂの反対側および上部半体１０ａの他端部
に冷却水流出穴１４が形成されている。軸箱上部
半体１０ａの冷却水流入穴１３と冷却水流出穴１
４の間にそれぞれ接続部１５，１６を介して冷却
水ジヤケツト１７が形成されている。接続部１
５，１６およびジヤケツト１７は、上部半体１０
ａの円筒状の外周面にみぞを形成し、その上にジ
ヤケツト板１８を溶接などの適宜な手段で固定す
ることにより形成されている。ジヤケツト１７
は、冷却水流入穴１３の接続部１５に続く入口部
１７ａと、冷却水流出穴１４の接続部１６に続く
出口部１７ｃと、入口部１７ａと出口部１７ｃの
間の中央部１７ｂとからなる。中央部１７ｂの軸
箱１０軸線方向の幅（以下単に幅という）はほぼ
一定で、上部半体１０ａの幅より少し小さい。入
口部１７ａの幅は、接続部１５の終端から中央部
１７ｂの始端まで徐々に広くなつている。出口部
１７ｃの幅は、接続部１６の始端から中央部１７
ｂの終端まで徐々に広くなつている。このため、
冷却水流入穴１３、接続部１５、冷却水ジヤケツ
ト１７、接続部１６および冷却水流出穴１４の間
の断面積変化が小さくなつている。また、ジヤケ
ツト１７の入口部１７ａ、中央部１７ｂおよび出
口部１７ｃの軸箱１０半径方向の厚さ（以下単に
厚さという）はほぼ一定である。そして、後の表
に示すように、ジヤケツト１７の入口部１７ａの
中間の点Ａ、中央部１７ｂの始端の点Ｂおよび中
央部１７ｂの中心の点Ｃの断面積は、それぞれ、
4.6、7.1および7.1cm2となつている。
第４図〜第６図は、第２実施例を示し、第１実
施例と同じ部分には同一の符号を付している。
第２実施例の場合、第１実施例と異なり、冷却
水ジヤケツト１７の厚さが入口部１７ａの始端お
よび出口部１７ｃの終端から中央部１７ｂの中心
まで徐々に小さくなつている。そして、後の表に
示すように、ジヤケツト１７の入口部１７ａの始
端の点Ａ、中央部１７ｂの始端の点Ｂおよび中央
部１７ｂの中心の点Ｃの断面積は、それぞれ6.5、
9.5および8.1cm2となつている。
第７図〜第９図は、比較例（従来例）を示し、
第１実施例と同じ部分には同一の符号を付してい
る。
比較例の場合、冷却水ジヤケツト１７の幅は全
体でほぼ一定であり、接続部１５，１６とジヤケ
ツト１７の間の断面積変化が大きくなつている。
また、冷却水ジヤケツト１７の厚さは始端および
終端から中心まで徐々に小さくなつている。そし
て、後の表に示すように、ジヤケツト１７の始点
の点Ａ、始点と中心の中間の点Ｂおよび中心の点
Ｃの断面積は、それぞれ13.7、9.5および8.1cm2と
なつている。
第１実施例、第２実施例および比較例につい
て、冷却水の流量すなわち流速を変えて、冷却水
ジヤケツト１７内の気泡の滞留の有無を調べた。
この試験においては、気泡の有無が外から確認で
きるよう、軸箱１０およびジヤケツト板１８は透
明なプラスチツクたとえばアクリル樹脂で製作し
た。また、軸箱１０の上部半体１０ａが下部半体
１０ｂの上にくるような縦置き、冷却水流入穴１
３が冷却水流出穴１４の上にくるような横置きお
よび冷却水流出穴１４が冷却水流入穴１３の上に
くるような横置きの３通りの軸箱１０の配置につ
いて試験を行なつた。
この試験の結果、冷却水流入穴１３、接続部１
５、冷却水ジヤケツト１７、接続部１６および冷
却水流出穴１４の間の断面積変化が小さい第１実
施例および第２実施例の場合、冷却水ジヤケツト
１７の全ての部分において冷却水の流速を35cm／
sec以上にすれば気泡の滞留がなくなることがわ
かつた。
冷却水の流量が15／minと20／minの２つ
の場合について、各例の３つの点Ａ，Ｂ，Ｃにお
ける冷却水の流速の計算値を次の表に示す。
INDUSTRIAL APPLICATION FIELD This invention relates to a cooling device for a bearing device. BACKGROUND TECHNIQUES AND THEIR PROBLEMS A bearing device for a drive roll for continuous casting is provided with a cooling device to cool the bearing. In this cooling system, a cooling water jacket is formed between the cooling water inflow hole and the cooling water outflow hole of the axle box, and the jacket is placed on the side that receives heat from the slab, but the shape of the jacket and the cooling Depending on the flow rate (flow rate) of water, air bubbles may remain in the jacket and parts of the jacket may be damaged due to thermal expansion. SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and provide a cooling device for a bearing device in which air bubbles do not remain in the cooling water jacket. Means for Solving the Problems A cooling device for a bearing device according to the present invention is a cooling device for a bearing device in which a cooling water inflow hole, a cooling water outflow hole, and a cooling water jacket between these are formed in an axle box. The cooling water jacket consists of an inlet part following the cooling water inflow hole, an outlet part following the cooling water outflow hole, and a central part between the inlet part and the outlet part, and the central part of the cooling water jacket extends in the axis direction of the axle box. The width of is almost constant,
The width of the inlet section in the axis direction of the axle box gradually increases from the cooling water inlet hole side to the center section, and the width of the outlet section in the axis direction of the axle box gradually increases from the cooling water outlet hole side to the center section. The cooling water jacket is characterized in that the flow velocity of the cooling water is 35 cm/sec or more in all parts of the cooling water jacket. Function The width of the central part of the cooling water jacket in the axle box axial direction is almost constant, and the width of the inlet and outlet parts in the axle box axial direction from the cooling water inlet hole side and the cooling water outlet hole side, respectively, to the center part. Since the holes are gradually widened, the change in cross-sectional area between the cooling water inlet hole, cooling water jacket, and cooling water outlet hole is small, and the flow rate of cooling water is 35 cm/sec or more in all parts of the cooling water jacket. This prevents air bubbles from accumulating in the cooling water jacket. Embodiment FIGS. 1 to 3 show a first embodiment. The axle box 10 of the bearing device has an upper half 10a and a lower half 10b fixed with bolts 11, and a bearing 12 is mounted inside the axle box 10.
A cooling device is provided within the axle box 10 as follows. One side of the axle box lower half 10b and the upper half 10
A cooling water inflow hole 13 is formed at one end of the lower half body 1b, and a cooling water outflow hole 14 is formed at the opposite end of the lower half body 1b and at the other end of the upper half body 10a. Cooling water inflow hole 13 and cooling water outflow hole 1 of the axle box upper half 10a
4, a cooling water jacket 17 is formed through connecting portions 15 and 16, respectively. Connection part 1
5, 16 and the jacket 17 are attached to the upper half 10.
It is formed by forming a groove on the cylindrical outer circumferential surface of a, and fixing the jacket plate 18 thereon by appropriate means such as welding. Jacket 17
consists of an inlet part 17a that continues to the connection part 15 of the cooling water inflow hole 13, an outlet part 17c that continues to the connection part 16 of the cooling water outflow hole 14, and a central part 17b between the inlet part 17a and the outlet part 17c. . The width of the central portion 17b in the axial direction of the axle box 10 (hereinafter simply referred to as width) is approximately constant, and is slightly smaller than the width of the upper half body 10a. The width of the inlet portion 17a gradually increases from the terminal end of the connecting portion 15 to the starting end of the central portion 17b. The width of the outlet portion 17c is from the starting end of the connecting portion 16 to the center portion 17.
It gradually widens to the end of b. For this reason,
The change in cross-sectional area between the cooling water inflow hole 13, the connection part 15, the cooling water jacket 17, the connection part 16, and the cooling water outflow hole 14 is reduced. Further, the thicknesses (hereinafter simply referred to as thickness) of the inlet portion 17a, central portion 17b, and outlet portion 17c of the jacket 17 in the radial direction of the axle box 10 are approximately constant. As shown in the table below, the cross-sectional areas of the intermediate point A of the entrance part 17a of the jacket 17, the starting point B of the central part 17b, and the central point C of the central part 17b are as follows.
4.6, 7.1 and 7.1cm 2 . 4 to 6 show a second embodiment, in which the same parts as in the first embodiment are given the same reference numerals. In the case of the second embodiment, unlike the first embodiment, the thickness of the cooling water jacket 17 gradually decreases from the starting end of the inlet section 17a and the terminal end of the outlet section 17c to the center of the central section 17b. As shown in the table below, the cross-sectional areas of point A at the starting end of the entrance part 17a of the jacket 17, point B at the starting end of the central part 17b, and point C at the center of the central part 17b are 6.5, respectively.
9.5 and 8.1cm 2 . 7 to 9 show comparative examples (conventional examples),
The same parts as in the first embodiment are given the same reference numerals. In the case of the comparative example, the width of the cooling water jacket 17 is substantially constant throughout, and the cross-sectional area change between the connecting portions 15, 16 and the jacket 17 is large.
Further, the thickness of the cooling water jacket 17 gradually decreases from the starting and ending ends to the center. As shown in the table below, the cross-sectional areas of the starting point A, the intermediate point B between the starting point and the center, and the center point C of the jacket 17 are 13.7, 9.5, and 8.1 cm.sup.2 , respectively. Regarding the first example, the second example, and the comparative example, the presence or absence of accumulation of air bubbles in the cooling water jacket 17 was examined by changing the flow rate, that is, the flow rate, of the cooling water.
In this test, the axle box 10 and jacket plate 18 were made of transparent plastic, such as acrylic resin, so that the presence or absence of air bubbles could be confirmed from the outside. In addition, the axle box 10 is placed vertically so that the upper half 10a is above the lower half 10b, and the cooling water inflow hole 1
Tests were conducted on three different arrangements of the axle box 10: one in which the shaft box 10 is placed horizontally so that the shaft box 3 is placed above the cooling water outflow hole 14, and the other is placed horizontally in which the cooling water outflow hole 14 is placed above the cooling water inlet hole 13. . As a result of this test, cooling water inlet hole 13, connection part 1
5. In the case of the first and second embodiments in which the change in cross-sectional area between the cooling water jacket 17, the connecting portion 16 and the cooling water outflow hole 14 is small, the flow rate of the cooling water is reduced in all parts of the cooling water jacket 17. 35cm/
It was found that if the temperature was set at sec or more, the air bubbles would no longer remain. The following table shows the calculated values of the cooling water flow rate at three points A, B, and C in each example for two cases where the cooling water flow rate is 15/min and 20/min.
【表】
第１実施例においては、流量が15／minの場
合も20／minの場合も、冷却水ジヤケツト１７
の全ての部分において冷却水の流速が35cm／sec
以上であり、気泡の滞留はなかつた。第２実施例
においては、流量が15／minの場合は、冷却水
ジヤケツト１７の一部における冷却水の流速が35
cm／secより小さく、気泡の滞留があつたが、流
量が20／minの場合は、冷却水ジヤケツト１７
の全ての部分において冷却水の流速が35cm／sec
以上であり、気泡の滞留はなかつた。比較例にお
いては、流量が15／minの場合も20／minの
場合も、冷却水ジヤケツト１７の少なくとも一部
における冷却水の流速が35cm／secより小さく、
気泡の滞留があつた。
発明の効果
この発明の軸受装置の冷却装置によれば、上述
のように、冷却水ジヤケツト１内に気泡が滞留す
ることがなく、したがつて熱膨張のために冷却水
ジヤケツトの部分が破損するようなこともない。[Table] In the first embodiment, whether the flow rate is 15/min or 20/min, the cooling water jacket 17
Cooling water flow rate is 35cm/sec in all parts of
This was the result, and no air bubbles remained. In the second embodiment, when the flow rate is 15/min, the flow rate of the cooling water in a part of the cooling water jacket 17 is 35/min.
cm/sec, and bubbles remained, but if the flow rate was 20/min, the cooling water jacket 17
Cooling water flow rate is 35cm/sec in all parts of
This was the result, and no air bubbles remained. In the comparative example, whether the flow rate is 15/min or 20/min, the flow rate of the cooling water in at least a part of the cooling water jacket 17 is smaller than 35 cm/sec.
There was a buildup of air bubbles. Effects of the Invention According to the cooling device for a bearing device of the present invention, as described above, air bubbles do not remain in the cooling water jacket 1, and therefore, parts of the cooling water jacket are not damaged due to thermal expansion. There is no such thing.
第１図はこの発明の第１実施例を示す軸受装置
の分解斜視図、第２図は第１図の軸受箱上部半体
の部分の横断面図、第３図は第２図の冷却水ジヤ
ケツトの部分の展開断面図、第４図はこの発明の
第２実施例を示す軸受装置の分解斜視図、第５図
は第４図の軸受箱上部半体の部分の横断面図、第
６図は第５図の冷却水ジヤケツトの部分の展開断
面図、第７図は比較例（従来例）を示す軸受装置
の分解斜視図、第８図は第７図の軸受箱上部半体
の部分の横断面図、第９図は第８図の冷却水ジヤ
ケツトの部分の展開断面図である。
１０……軸箱、１３……冷却水流入穴、１４…
…冷却水流出穴、１７……冷却水ジヤケツト、１
７ａ……入口部、１７ｂ……中央部、１７ｃ……
出口部。
Fig. 1 is an exploded perspective view of a bearing device showing a first embodiment of the present invention, Fig. 2 is a cross-sectional view of the upper half of the bearing box shown in Fig. 1, and Fig. 3 is a cooling water FIG. 4 is an exploded perspective view of a bearing device showing a second embodiment of the present invention; FIG. 5 is a cross-sectional view of the upper half of the bearing box shown in FIG. 4; The figure is an exploded sectional view of the cooling water jacket part in Figure 5, Figure 7 is an exploded perspective view of a bearing device showing a comparative example (conventional example), and Figure 8 is a part of the upper half of the bearing box in Figure 7. FIG. 9 is a developed cross-sectional view of the cooling water jacket portion of FIG. 8. 10...Axle box, 13...Cooling water inflow hole, 14...
...Cooling water outflow hole, 17...Cooling water jacket, 1
7a...Entrance part, 17b...Central part, 17c...
Exit part.
Claims (1)
れらの間の冷却水ジヤケツトが形成されている軸
受装置の冷却装置において、 冷却水ジヤケツトが、冷却水流入穴に続く入口
部と、冷却水流出穴に続く出口部と、入口部と出
口部の間の中央部とからなり、冷却水ジヤケツト
の中央部の軸箱軸線方向の幅がほぼ一定であり、
入口部の軸箱軸線方向の幅が冷却水流入穴側から
中央部まで徐々に広くなり、出口部の軸箱軸線方
向の幅が冷却水流出穴側から中央部まで徐々に広
くなつており、冷却水ジヤケツトの全ての部分に
おいて冷却水の流速が35cm／sec以上となつてい
ることを特徴とする軸受装置の冷却装置。[Claims] 1. In a cooling device for a bearing device in which a cooling water inlet hole, a cooling water outlet hole, and a cooling water jacket between these are formed in an axle box, the cooling water jacket follows the cooling water inlet hole. It consists of an inlet part, an outlet part following the cooling water outflow hole, and a central part between the inlet part and the outlet part, and the width of the central part of the cooling water jacket in the axis direction of the axle box is almost constant,
The width of the inlet section in the axis direction of the axle box gradually increases from the cooling water inlet hole side to the center section, and the width of the outlet section in the axis direction of the axle box gradually increases from the cooling water outlet hole side to the center section. A cooling device for a bearing device, characterized in that the flow velocity of cooling water is 35 cm/sec or more in all parts of the cooling water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18525087A JPS6430925A (en) | 1987-07-23 | 1987-07-23 | Cooler for bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18525087A JPS6430925A (en) | 1987-07-23 | 1987-07-23 | Cooler for bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6430925A JPS6430925A (en) | 1989-02-01 |
| JPH0448974B2 true JPH0448974B2 (en) | 1992-08-10 |
Family
ID=16167520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18525087A Granted JPS6430925A (en) | 1987-07-23 | 1987-07-23 | Cooler for bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6430925A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4721230B2 (en) * | 2006-10-31 | 2011-07-13 | 京セラ株式会社 | Plasma generator, reaction device, and light source device |
| JP5659521B2 (en) * | 2009-04-06 | 2015-01-28 | 株式会社ジェイテクト | Rolling bearing device |
| US10145377B2 (en) | 2015-04-02 | 2018-12-04 | Curtiss-Wright Electro-Mechanical Corporation | Canned motor pump thrust shoe heat shield |
-
1987
- 1987-07-23 JP JP18525087A patent/JPS6430925A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6430925A (en) | 1989-02-01 |
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