CN202779181U - Pressing device of rolling mill - Google Patents
Pressing device of rolling mill Download PDFInfo
- Publication number
- CN202779181U CN202779181U CN201220471227.0U CN201220471227U CN202779181U CN 202779181 U CN202779181 U CN 202779181U CN 201220471227 U CN201220471227 U CN 201220471227U CN 202779181 U CN202779181 U CN 202779181U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- rolling
- rolling mill
- down screw
- roll
- 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 - Lifetime
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Abstract
The utility model provides a pressing device of a rolling mill, relates to steel rolling machinery, and aims to solve the technical problems that a pressing screw rod of the conventional pressing device is directly in rigid contact with a roller, a rolled piece is easily stuck in the rolling mill, and key components such as the roller and the like cannot be protected. The pressing device comprises a speed reducer which is fixed on a frame, wherein a hollow output shaft of the speed reducer is sleeved on a pressing screw rod; the pressing screw rod is matched with a pressing nut which is fixed on the frame; and the lower end of the pressing screw rod is contacted with a roller bearing block. The pressing device is characterized in that a rolling-blockage resisting protector is arranged between the lower end of the pressing screw rod and the roller bearing block. The pressing device is used on the rolling mill, when the rolling force exceeds the preset pressure, the pressure in the rolling-blockage resisting protector is released, so that the rolled piece is prevented from being stuck in the rolling mill, and the roller and the like are protected from being damaged.
Description
Technical field
The utility model relates to rolling machinery, particularly the screwdown gear of a kind of heat, cold-rolling mill.
Background technology
When various steel heats, cold-rolling mill replacing product specification, often between roll and frame, increase by a cover screwdown gear.Screwdown gear comprises (referring to Fig. 1): be fixed on the reductor 4 on the frame 5, down screw rod 2 with the hollow output shaft of reductor 4 suit, with down screw rod 2 with cooperate, be fixed on frame 5 on screw box 3, the lower end of down screw rod 2 directly contacts with roll chock 6.Down screw rod 2 rotates under power drive, because screw box 3 is motionless, down screw rod will move thereby drive roll along axial-movement, realizes changing the pass that product specification requires.
The screwdown gear of prior art, because down screw rod one end directly contacts with the roll chock rigidity, rolled piece easily snaps in the milling train, damages the key components and parts such as roll.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of prior art; a kind of screwdown gear of rolling mill is provided; the down screw rod that solves existing screwdown gear contacts with the direct rigidity of roll, and rolled piece easily snaps in the milling train, can't protect the technical problem of the key components and parts such as roll.
The utility model is achieved through the following technical solutions:
A kind of screwdown gear of rolling mill; comprise: be fixed on the reductor on the frame; the hollow output shaft of reductor and down screw rod suit; down screw rod cooperates with screw box on being fixed on frame; the lower end of down screw rod contacts with roll chock, it is characterized in that: the anti-card protecting device that rolls is installed between the lower end of described down screw rod and the roll chock.
It is described that anti-to roll card protecting device be a kind of hydraulic protector; by the piston rod that is connected with down screw rod; and cylinder barrel and safety valve formation; according to the default pressure of the roll-force of technological requirement; when roll-force has surpassed preset pressure; the anti-earth pressure release that rolls in the card protecting device, the protection roll is not damaged.
The utility model compared with prior art; because the anti-card protecting device that rolls that adopts the hydraulic protecting principle has been installed between down screw rod one end and roll chock; the anti-card protecting device that rolls is according to the default pressure of the roll-force of technological requirement; when the operation of rolling occurs unusual; when roll-force has surpassed preset pressure; the anti-earth pressure release that rolls in the card protecting device, thus the roll lifting has prevented that rolled piece from snapping in the milling train, also plays the effect of the key components and parts such as protection roll.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the anti-structural representation that rolls card protecting device;
Fig. 3 is the A-A profile of Fig. 2.
The utility model is further described by preferred embodiment below in conjunction with accompanying drawing
The specific embodiment
As shown in Figure 1, a kind of screwdown gear of rolling mill comprises: be fixed on the reductor 4 on the frame 5, the hollow output shaft of reductor 4 and down screw rod 2 suits, down screw rod 2 cooperates with screw box 3 on being fixed on frame 5, and the lower end of down screw rod 2 contacts with roll chock 6; The anti-card protecting device 1 that rolls is installed between the lower end of described down screw rod 2 and the roll chock 6.
Shown in Fig. 2,3; it is described that anti-to roll card protecting device 1 be a kind of hydraulic protector; by the piston rod 7 that is connected with down screw rod 2; and cylinder barrel 8 and safety valve 9 formations; according to the default pressure of the roll-force of technological requirement; when roll-force has surpassed preset pressure, the anti-earth pressure release that rolls in the card protecting device, the protection roll is not damaged.
The utility model operation principle is as follows:
1, motor drives reductor 4, and reductor drives down screw rod 2 and rotates, because screw box 3 is fixed on the frame 5, can not rotate, so down screw rod 2 moves along axis is upper and lower;
2, prevent rolling card protecting device 1 owing to having installed between down screw rod 2 one ends and roll chock, roll-force is passed to anti-rolling on the card protecting device in the operation of rolling;
3, anti-principle of rolling card protecting device 1 employing hydraulic protecting; at first the roll-force according to technological requirement presets a pressure; when the operation of rolling occurs unusual; when roll-force has surpassed preset pressure; the anti-earth pressure release that rolls in the card protecting device; thereby roll promotes and has prevented that rolled piece from snapping in the milling train, has also played the effect of the key components and parts such as protection roll.
The utility model installation steps are as follows:
1, screw box 3 is fixed on the frame 5;
2, down screw rod 2 is passed screw box 3;
3, will prevent rolling card protecting device 1 is connected with down screw rod 2;
4, will be enclosed within on the down screw rod 2 with the reductor 4 of hollow output shaft, reductor 4 is fixed on the frame 5.
Claims (2)
1. the screwdown gear of a rolling mill; comprise: be fixed on the reductor (4) on the frame (5); the hollow output shaft of described reductor (4) and down screw rod (2) suit; described down screw rod (2) cooperates with screw box (3) on being fixed on described frame (5); the lower end of described down screw rod (2) contacts with roll chock (6), it is characterized in that: the anti-card protecting device (1) that rolls is installed between the lower end of described down screw rod (2) and the roll chock (6).
2. the screwdown gear of rolling mill according to claim 1; it is characterized in that: described anti-to roll card protecting device (1) be a kind of hydraulic protector; by the piston rod (7) that is connected with down screw rod (2), and cylinder barrel (8) and safety valve (9) formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220471227.0U CN202779181U (en) | 2012-08-31 | 2012-08-31 | Pressing device of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220471227.0U CN202779181U (en) | 2012-08-31 | 2012-08-31 | Pressing device of rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202779181U true CN202779181U (en) | 2013-03-13 |
Family
ID=47806523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220471227.0U Expired - Lifetime CN202779181U (en) | 2012-08-31 | 2012-08-31 | Pressing device of rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202779181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521528A (en) * | 2013-11-01 | 2014-01-22 | 太原重工股份有限公司 | Rolling mill screw-down device |
-
2012
- 2012-08-31 CN CN201220471227.0U patent/CN202779181U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521528A (en) * | 2013-11-01 | 2014-01-22 | 太原重工股份有限公司 | Rolling mill screw-down device |
| CN103521528B (en) * | 2013-11-01 | 2015-07-22 | 太原重工股份有限公司 | Rolling mill screw-down device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |