CN203174150U - High-strength and heat-resisting alloy steel hollow furnace bottom roller - Google Patents
High-strength and heat-resisting alloy steel hollow furnace bottom roller Download PDFInfo
- Publication number
- CN203174150U CN203174150U CN 201320158404 CN201320158404U CN203174150U CN 203174150 U CN203174150 U CN 203174150U CN 201320158404 CN201320158404 CN 201320158404 CN 201320158404 U CN201320158404 U CN 201320158404U CN 203174150 U CN203174150 U CN 203174150U
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- Prior art keywords
- roller
- alloy steel
- shafts
- furnace bottom
- roll shaft
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Abstract
The utility model discloses a high-strength and heat-resisting alloy steel hollow furnace bottom roller. The high-strength and heat-resisting alloy steel hollow furnace bottom roller comprises a roller cylinder made of heat-resisting alloy steel and roller shafts connected with the two ends of the roller cylinder, wherein the roller shafts are inserted into the end parts of the roller cylinder to form matched and fixed connection; the matching parts of the roller cylinder and the roller shafts are provided with two positioning pin shafts which penetrate through the matching parts of the roller cylinder and the roller shafts in a radial direction; one part of one positioning pin shaft penetrates through the other positioning pin shaft; and the further improvement is that the matching of the roller cylinder and the roller shafts is interference fit, the two ends of the positioning pin shafts are welded and fixedly connected with positioning holes in the roller cylinder, and the two positioning pin shafts are mutually vertical. According to the high-strength and heat-resisting alloy steel hollow furnace bottom roller disclosed by the utility model, the positioning pin shafts do not easily fall off and the connection of the roller cylinder and the roller shafts is reliable; and the positioning pin shafts penetrate through the matching parts of the roller cylinder and the roller shafts, so that the connection strength of the roller cylinder and the roller shafts is obviously improved.
Description
Technical field
The utility model relates to the furnace bottom roll of normalizing furnace in a kind of steel rolling production.
Background technology
The furnace bottom roll of normalizing furnace is generally made by heat-resisting alloy steel, generally comprises roller, is connected the roll shaft at roller two ends, and roll shaft inserts the roller end, forms to cooperate also to adopt welding process fixedly connected.The furnace bottom roll of prior art is provided with 2～4 uniform pilot holes at roller, roll shaft matching part, and alignment pin is housed in the hole, alignment pin and pilot hole shrink-fit.The strength of joint that this structure both can increase roller and roll shaft bears bigger impact, also can reduce the groove size of roller and roll shaft butt welding, reduces the generation of dross phenomenon.But there is certain defective in the furnace bottom roll of prior art: alignment pin easily comes off, and connection reliability is poor.In case the alignment pin obscission occurs, then can weaken the strength of joint of roller and roll shaft greatly, may produce more serious consequence.
The utility model content
The utility model provides a kind of roller to be connected with roll shaft reliably at the deficiencies in the prior art, the high strength thermal resistant alloy steel empty stomach furnace bottom roll that strength of joint is high.
The utility model is achieved through the following technical solutions technical object.
The high strength thermal resistant alloy steel is furnace bottom roll on an empty stomach, comprises the roller that heat-resisting alloy steel makes, the roll shaft that is connected the roller two ends; Described roll shaft inserts the roller end, forms cooperation and fixedly connected; Its improvements are: described roller, roll shaft matching part are provided with two alignment pin that radially run through roller, roll shaft matching part, and an alignment pin wherein partly runs through another root alignment pin.
The utility model further improves and is: described roll shaft is shrink-fit with cooperating of roller end.
The utility model further improves and is: the welding of described alignment pin two ends is fixedly connected in the pilot hole of roller.
The utility model further improves and is: described two alignment pin are vertical mutually.
The utility model compared with prior art has following positively effect:
1, roller, roll shaft matching part are provided with two alignment pin that radially run through roller, roll shaft matching part, and an alignment pin wherein partly runs through another root alignment pin, and like this, alignment pin difficult drop-off, roller are connected with roll shaft reliably; Alignment pin runs through roller, the roll shaft matching part significantly improves roller, roll shaft strength of joint.
2, roll shaft adopts shrink-fit with cooperating of roller end, can further increase the strength of joint of roll shaft and roller.
3, the welding of alignment pin two ends is fixedly connected in the pilot hole of roller, can prevent further that alignment pin from coming off, and further improves roller and roll shaft connection reliability.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the local enlarged diagram of I part among Fig. 1.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and in conjunction with the embodiments below.
High strength thermal resistant alloy steel shown in the drawings is furnace bottom roll on an empty stomach, comprises the roller 1 that heat-resisting alloy steel makes, the roll shaft 2 that is connected roller 1 two ends; Roll shaft 2 inserts roller 1 end, forms cooperation and fixedly connected; Roller 1, roll shaft 2 matching parts are provided with two alignment pin 3 that radially run through roller 1, roll shaft 2 matching parts, and alignment pin 3 parts wherein run through another root alignment pin 3, and like this, alignment pin 3 difficult drop-offs, roller 1 are connected with roll shaft 2 reliably; Alignment pin 3 runs through roller 1, roll shaft 2 matching parts significantly improve roller 1, roll shaft 2 strength of joint.
In the present embodiment, the welding of alignment pin 3 two ends is fixedly connected in the pilot hole of roller 1, and two alignment pin 3 are vertical mutually, can prevent further that alignment pin 3 from coming off, and further improve roller 1 and roll shaft 2 connection reliability.
In the present embodiment, roll shaft 2 is shrink-fit with cooperating of roller 1 end, can further increase the strength of joint of roll shaft and roller.
Claims (4)
1. high strength thermal resistant alloy steel furnace bottom roll on an empty stomach comprises the roller (1) that heat-resisting alloy steel makes, the roll shaft (2) that is connected roller (1) two ends; Described roll shaft (2) inserts roller (1) end, forms cooperation and fixedly connected; It is characterized in that: described roller (1), roll shaft (2) matching part are provided with two alignment pin (3) that radially run through roller (1), roll shaft (2) matching part, and an alignment pin (3) part wherein runs through another root alignment pin (3).
2. high strength thermal resistant alloy steel according to claim 1 furnace bottom roll on an empty stomach, it is characterized in that: described roll shaft (2) is shrink-fit with cooperating of roller (1) end.
3. high strength thermal resistant alloy steel according to claim 1 and 2 furnace bottom roll on an empty stomach, it is characterized in that: the welding of described alignment pin (3) two ends is fixedly connected in the pilot hole of roller (1).
4. high strength thermal resistant alloy steel according to claim 1 and 2 furnace bottom roll on an empty stomach, it is characterized in that: described two alignment pin (3) are vertical mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158404 CN203174150U (en) | 2013-04-02 | 2013-04-02 | High-strength and heat-resisting alloy steel hollow furnace bottom roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158404 CN203174150U (en) | 2013-04-02 | 2013-04-02 | High-strength and heat-resisting alloy steel hollow furnace bottom roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203174150U true CN203174150U (en) | 2013-09-04 |
Family
ID=49070881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320158404 Expired - Fee Related CN203174150U (en) | 2013-04-02 | 2013-04-02 | High-strength and heat-resisting alloy steel hollow furnace bottom roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203174150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017983A (en) * | 2014-06-05 | 2014-09-03 | 河北钢铁股份有限公司唐山分公司 | Long-life steel billet conveying roller way for heating furnace |
-
2013
- 2013-04-02 CN CN 201320158404 patent/CN203174150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017983A (en) * | 2014-06-05 | 2014-09-03 | 河北钢铁股份有限公司唐山分公司 | Long-life steel billet conveying roller way for heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20150402 |
|
| EXPY | Termination of patent right or utility model |