CN201396378Y - Reversal protector for universal shaft - Google Patents
Reversal protector for universal shaft Download PDFInfo
- Publication number
- CN201396378Y CN201396378Y CN2009200691803U CN200920069180U CN201396378Y CN 201396378 Y CN201396378 Y CN 201396378Y CN 2009200691803 U CN2009200691803 U CN 2009200691803U CN 200920069180 U CN200920069180 U CN 200920069180U CN 201396378 Y CN201396378 Y CN 201396378Y
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- CN
- China
- Prior art keywords
- swivel mount
- rolling
- rolling groove
- rotary frame
- cardan shaft
- 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 - Fee Related
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Abstract
A reversal protector for universal shaft is mounted between transmission couplings or on the end part of transmission coupling, and comprises a cylindrical body, a transmission device and a pluralityof rolling bodies; wherein, one end of the cylindrical body protrudes circumferentially and laterally to form a joint plate with a joint hole, an inwards-concave rolling groove is circumferentially machined on the cylindrical inner wall, bearing mounting holes are formed on both sides of the rolling groove; the transmission device comprises a rotary frame, the rotary frame has cylindrical structure, the lateral surface of the rotary frame protrudes outwards and extends to symmetrically form a plurality of retaining parts, the inner lateral surfaces of the retaining parts are concave surfaces,sink holes are machined on the vertical surfaces of the retaining parts, springs are arranged in the sink holes; a shaft hole is arranged in the center of the rotary frame, a key slot for mounting keyand transferring torque is arranged on the inner surface of the shaft hole, shaft necks for mounting bearings are symmetrically arranged on both ends of the outer surface of the shaft hole; the rolling bodies are arranged on the concave surfaces of the retaining parts of the rotary frame and supported on the springs; the rolling bodies are positioned in the wedged space formed by the rolling groove in the middle of inner wall of the cylindrical body and the horizontal surface of the inner lateral concave surfaces of the retaining parts of the rotary frame.
Description
Technical field
The utility model relates to cardan shaft, particularly a kind of cardan shaft reversal protection device.
Background technique
The many steel rolling equipments of hot rolling continuous rolling production line of iron and steel enterprise all will use the cardan shaft device both at home and abroad, the cardan shaft device is mainly used in provides power and transmitting torque, but also some cardan shaft device is used for detection facility and carries out data capture, driving control system and automation control systems such as feedback data are provided for control.
In application in practice, some cardan shaft usually can bring impact for the normal rotation of cardan shaft and relevant device in the face of operating modes such as unexpected stall or reverses suddenly, has formed the bigger destructive shearing stress that has.For example hot rolling 1580 is produced to be equipped with on the outlet pinch roller of De-scaling box of lines and is connected universal catcher and the dephosphorization case that PLG counts and take over cardan shaft, because arts demand or when running into band steel steel-fastening and cause accident such as steel scrap, the band steel that runs up can stop suddenly or reverse, the go-ahead roller strap that pinches universal catcher and is reversed quickly, cause great impact, the result skids tire catcher even the fault of packaged reducer broken teeth, can not ordinary production.
At present, both at home and abroad steel industry generally adopts hydraulic protector to large-scale cardan shafts such as main shafts, prevents to transship damage to cardan shaft and speed reducer.With 2050 hot rollings is example; former 2050 hot rolling mill finishing mill transmission shafts do not have overload protection arrangement; when taking place, rolling overload or fracture of roller and other abnormal accident very easily cause fracture of roller and transmission shaft and gear-box thereof to damage, thus badly damaged equipment and influence production, and economic loss is serious.
Along with the development of technology, nowadays existing ripe finishing mill transmission shaft overload protection arrangement and technology thereof, and comparatively advanced at present and use comparatively widely that finishing mill transmission shaft overload protection arrangement is the hydraulic safe catcher.As steel, Sweden SSAB factory, Mei Shan Iron And Steel Plant etc. in the Taiwan hydraulic safe catcher has been installed on the finishing mill transmission shaft.After setting up the transformation of hydraulic type overload protection safety catcher on the transmission shaft of rolling load maximum, when rolling overload or fracture of roller and other abnormal accident thereof take place when, the hydraulic safe catcher lost efficacy immediately, can prevent the further expansion of accident, thus not disconnected work roll and back-up roll and the transmission system thereof of protection; And this hydraulic type overload protection safety catcher maintenance is little, need not safeguard substantially, and after playing a protective role, this catcher itself can not damage, and just can continue to use after having added fluid, recovers fast.
Both at home and abroad steel industry generally adopts the friction plate protector to small-sized cardan shafts such as coupling shafts, prevents to transship damage to cardan shaft and speed reducer.But; hydraulic type overload protection safety catcher and friction plate protector are only regulated the torque of overload and are protected; can't regulate for the formed alternate load effect of the torque that stops suddenly or reverse, and often be fatal to the damage of cardan shaft and speed reducer less than the alternate load effect of overload extreme value less than the overload extreme value.
Summary of the invention
The purpose of this utility model is to provide a kind of cardan shaft reversal protection device that small-sized universal catcher is used that is suitable for; have and prevent the damage of alternate load effect cardan shaft and speed reducer; the reversal protection device can skid when the passive appearance of universal catcher stops suddenly or reverse situation suddenly; avoid the impact of alternate load effect, be applicable to that the steel rolling industry measures behind the flying shear of band steel length the dephosphorization case with the reversal protection of universal catcher cardan shaft and speed reducer.
For achieving the above object, the technical solution of the utility model is,
A kind of cardan shaft reversal protection device, be installed between the transmission catcher or transmission catcher end, it comprises, body, be cylindric, the distolateral tie-plate of one to circumferential protrusion formation one band connecting hole, its cylindric inwall intermediate circumference direction is offered the rolling groove of an indent, and these rolling groove both sides form bearing mounting hole; Transmission device comprises, swivel mount is cylinder-like structure, and its outer side surface is symmetrically formed several blocked parts to the outer lug extension, and this blocked part inner side surface becomes concave surface, and its vertical surface has counterbore, is provided with spring in the counterbore; This swivel mount center is an axis hole, and its internal surface is provided with and is used for the keyway of fitting key with transmitting torque, and its outer surface two ends are symmetrical arranged for bearings mounted axle journal; Some rolling elements are arranged at the some blocked parts of described swivel mount concave surface, with spring against; This rolling element is in the formed wedge of the horizontal plane space of middle rolling groove of the cylindric inwall of described body and swivel mount blocked part inner side surface concave surface.
Further, described swivel mount outer surface two ends are symmetrical arranged the locking slot and the corresponding spring bolt of rigid bearing.
Again, described swivel mount blocked part outer side surface is a cambered surface.
In addition, the horizontal plane of the rolling groove of the middle indent of the cylindric inwall of body described in the utility model and swivel mount blocked part concave surface keeps enough guaranteeing the roughness of the required frictional force of transmitting torque.
The beneficial effects of the utility model
Universal catcher in the face of operating modes such as unexpected stall or reverses suddenly; the cardan shaft of the present utility model reversal protection device if pack into; have and prevent the damage of alternate load effect cardan shaft and speed reducer; the reversal protection device can allow universal catcher dally when the passive appearance of universal catcher stops suddenly or reverse situation suddenly; can not form and have destructive shearing stress; can effectively avoid the impact of alternate load to cardan shaft and relevant device; particularly importantly; the utility model cardan shaft when bringing into play protective action, can not produce machine halt trouble with the reversal protection device.
Description of drawings
Fig. 1 is the utility model one embodiment's a user mode schematic representation;
Fig. 2 is the utility model one embodiment's a structural representation;
Fig. 3 is the B-B cross-sectional schematic of Fig. 2;
Fig. 4 is the utility model protector main body structure schematic representation;
Fig. 5 is the structural representation of the utility model swivel mount.
Embodiment
Referring to Fig. 1, cardan shaft of the present utility model is installed between the transmission catcher 4 or transmission catcher end with reversal protection device A, and transmission is taken over 4 one ends and connected with speed reducer 8 output shafts that connect motor, and the other end connects the upper and lower pinch roller 5,6 that pinches steel billet 7;
Referring to Fig. 2～Fig. 5, reversal protection device A of the present utility model, comprise, body 1, be cylindric, the distolateral tie-plate 11 of one to circumferential protrusion formation one band connecting hole 111, its cylindric inwall 12 intermediate circumference directions are offered the rolling groove 121 of an indent, and these rolling groove 121 both sides form bearing mounting hole 13,14; Transmission device 2 comprises, swivel mount 21 is cylinder-like structure, and its outer side surface is symmetrically formed four blocked parts 211 to the outer lug extension, and these blocked part 211 inner side surfaces become concave surface, and its vertical surface 2111 has counterbore 2112, is provided with spring 23 in the counterbore 2112; These swivel mount 21 centers are axis hole 23, and its internal surface is provided with and is used for the keyway 212 of fitting key with transmitting torque, and its outer surface two ends are symmetrical arranged for the axle journal 213 that bearing 3 is installed and the locking slot 214 and the corresponding spring bolt 215 of rigid bearing; Four rolling elements 22 are arranged at described swivel mount 21 blocked parts 211 concave surfaces, with spring 23 against; This rolling element 22 is in the horizontal plane 2113 formed wedge spaces of middle rolling groove 121 of described body 1 cylindric inwall and swivel mount 21 blocked parts 211 inner side surface concave surfaces; Described swivel mount 21 blocked parts 211 outer side surfaces are cambered surface.
The horizontal plane 2113 of the rolling groove 121 of indent and swivel mount 21 blocked parts 211 concave surfaces keeps enough guaranteeing the roughness of the required frictional force of transmitting torque in the middle of the body 1 cylindric inwall described in the utility model.
The utility model is by the torque input of body 1 with the transmission catcher, through transmission device the torque of importing after handling, rolling element 22 wedges is outputed to swivel mount 21, keyway 212 by swivel mount 21 inner rings is delivered to catcher again, during stability when guaranteeing transmission of torque and reverse idle running by bearing 3.
When swivel mount 21 sense of rotation were consistent with this wedge space opening direction, rolling element 22 was stuck in the wedge space, and the resistance of the big more formation of the torque of rotation is just big more, thereby can transmitting torque; When sense of rotation is opposite with this wedge space opening direction; rolling element 22 will pressuring spring 23; move to wedge space opening direction; the resistance that rolling element 22 is stuck in the wedge space will disappear; thereby can stop the transmission of torque, form the required idle running of reversal protection device of the utility model cardan shaft.
Claims (4)
1. a cardan shaft reversal protection device is installed between the transmission catcher or transmission catcher end, it is characterized in that, comprise,
Body is cylindric, the distolateral tie-plate of one to circumferential protrusion formation one band connecting hole, and its cylindric inwall intermediate circumference direction is offered the rolling groove of an indent, and these rolling groove both sides form bearing mounting hole;
Transmission device comprises,
Swivel mount is cylinder-like structure, and its outer side surface is symmetrically formed several blocked parts to the outer lug extension, and this blocked part inner side surface becomes concave surface, and its vertical surface has counterbore, is provided with spring in the counterbore; This swivel mount center is an axis hole, and its internal surface is provided with and is used for the keyway of fitting key with transmitting torque, and its outer surface two ends are symmetrical arranged for bearings mounted axle journal;
Some rolling elements are arranged at the some blocked parts of described swivel mount concave surface, with spring against; This rolling element is in the formed wedge of the horizontal plane space of middle rolling groove of the cylindric inwall of described body and swivel mount blocked part inner side surface concave surface.
2. cardan shaft reversal protection device as claimed in claim 1 is characterized in that, described swivel mount outer surface two ends are symmetrical arranged the locking slot and the corresponding spring bolt of rigid bearing.
3. cardan shaft reversal protection device as claimed in claim 1 is characterized in that, described swivel mount blocked part outer side surface is a cambered surface.
4. cardan shaft reversal protection device as claimed in claim 1 is characterized in that, the horizontal plane of the rolling groove of indent and swivel mount blocked part concave surface keeps enough guaranteeing the roughness of the required frictional force of transmitting torque in the middle of the cylindric inwall of described body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200691803U CN201396378Y (en) | 2009-03-20 | 2009-03-20 | Reversal protector for universal shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200691803U CN201396378Y (en) | 2009-03-20 | 2009-03-20 | Reversal protector for universal shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396378Y true CN201396378Y (en) | 2010-02-03 |
Family
ID=41618887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200691803U Expired - Fee Related CN201396378Y (en) | 2009-03-20 | 2009-03-20 | Reversal protector for universal shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396378Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097926A (en) * | 2017-04-26 | 2017-08-29 | 哈尔滨工程大学 | A kind of shaft end connecting connection parts for preventing that propeller from damaging after being wound |
| CN109152333A (en) * | 2017-11-08 | 2019-01-04 | 南京德朔实业有限公司 | Hand propelled self-powered traveling machine |
| CN109743954A (en) * | 2017-11-08 | 2019-05-14 | 南京德朔实业有限公司 | Hand propelled self-powered traveling machine |
-
2009
- 2009-03-20 CN CN2009200691803U patent/CN201396378Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097926A (en) * | 2017-04-26 | 2017-08-29 | 哈尔滨工程大学 | A kind of shaft end connecting connection parts for preventing that propeller from damaging after being wound |
| CN109152333A (en) * | 2017-11-08 | 2019-01-04 | 南京德朔实业有限公司 | Hand propelled self-powered traveling machine |
| CN109743954A (en) * | 2017-11-08 | 2019-05-14 | 南京德朔实业有限公司 | Hand propelled self-powered traveling machine |
| CN109152333B (en) * | 2017-11-08 | 2021-11-19 | 南京德朔实业有限公司 | Hand-push type self-driving travelling machine |
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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: 20100203 Termination date: 20160320 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |