CN202245752U - Neodymium iron boron magnetic material stopper for bridge crane - Google Patents
Neodymium iron boron magnetic material stopper for bridge crane Download PDFInfo
- Publication number
- CN202245752U CN202245752U CN2011203346643U CN201120334664U CN202245752U CN 202245752 U CN202245752 U CN 202245752U CN 2011203346643 U CN2011203346643 U CN 2011203346643U CN 201120334664 U CN201120334664 U CN 201120334664U CN 202245752 U CN202245752 U CN 202245752U
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- cylinder
- permanent magnet
- piston
- magnet rings
- cylinder bottom
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Abstract
The utility model discloses a neodymium iron boron magnetic material stopper for a bridge crane, and solves the problems such as insufficient buffer stroke, large vibration, and easy damage in the current buffer unit. The neodymium iron boron magnet stopper comprises a bracket (1) which is fixedly connected with a housing of a cylinder body (2), wherein the cylinder bottom of the cylinder body (2) is a cylinder bottom permanent magnet ring (3) with a cylindrical centre hole; a piston body (4) is movably arranged in the cylinder body (2); a piston rod (7) is fixedly connected on the centre of the inner end of the piston body (4); the head part of the piston rod (7) gets through the cylindrical cylinder bottom permanent magnet ring (3) centre hole on the cylinder bottom of the cylinder body (2) and then is fixedly connected with a cylindrical piston cap (8); a cylinder top permanent magnet ring (6) is fixedly arranged on the connection part of the piston body (4) and the piston rod (7); and a cylinder permanent magnet ring (9) is movably arranged in the cylinder body (2); the neodymium iron boron magnet stopper has a simple structure, adopts the permanent magnet, and uses the magnetic force repulsion principle to bear the largest impact force with the largest rigidity.
Description
Technical field
The present invention relates to a kind of stop device, particularly a kind of stop device of crane in bridge type is used to prevent that crane in bridge type is derailed when out of control.
Background technology
Derailed when out of control for guaranteeing crane in bridge type, cause roll-over accident, generally all being provided with the elastic bolster guide device in orbit is shock absorber.The cushion stroke of shock absorber commonly used is not enough, and vibrations are big, rapid wear.Function realizes runing counter to ideal operation mechanism.At present, the shock absorber that generally adopts all is to realize buffering through deformation distance, subdues impact; Hooke's law is all followed in the deformation of elastic deformation shock absorber: in elastic limit, the deformation of object all is to increase along with compression distance increases rigidity with causing that the external force of deformation is directly proportional, and impact reduces along with the increase of compression distance; That is to say that device rigidity was minimum when impact was maximum, impact reduces gradually; Device rigidity increases gradually, has caused minimum rigidity to bear maximum bump, the shock absorber of being made up of High molecular material, rubber that will carry especially; When bearing large impact,, also can think so be to bear effectively amount of compression pop-off of maximum impact force with minimum rigidity; Initial elasticity becomes rigidity, and from the deformation angle analysis, reality has not had cushion stroke; Shock absorber becomes rigid body, becomes rigid impact, and actual condition is not that elastic buffer but rigidity stop.Certainly, also can satisfy the initial stage buffering, but certainly will strengthen device volume, occupy greater room through increasing effective compression stroke.
Summary of the invention
The nd-fe-b magnetic material backstop that the invention provides a kind of crane in bridge type has solved the cushion stroke deficiency of existing shock absorber, and vibrations are big, the technical matters of rapid wear.
The present invention overcomes the above problems through following scheme:
A kind of nd-fe-b magnetic material backstop of crane in bridge type; Comprise support, cylinder body and piston body; The shell of support and cylinder body is fixed together, and the cylinder bottom of cylinder body is a columniform cylinder bottom permanent magnet rings that has centre hole, and piston body is movably arranged in the cylinder body; Inner central authorities at piston body are fixedly connected with piston rod; The head of piston rod is fixed together with the cylindrical piston cap after passing the centre hole of columniform cylinder bottom permanent magnet rings of cylinder bottom of cylinder body, is set with cylinder top permanent magnet rings in the junction of piston body and piston rod, in cylinder body, is movably set with permanent magnet rings in the cylinder; Piston rod passes in the permanent magnet rings from cylinder; The polarity of two magnetic poles of permanent magnet rings adjacent surface is identical in cylinder bottom permanent magnet rings and the cylinder, and permanent magnet rings is identical with the polarity of two magnetic poles of cylinder top permanent magnet rings adjacent surface in the cylinder, and cylindrical piston cap and cylinder bottom permanent magnet rings are pulled together.
The outer face of described piston body is provided with cushion rubber.
The present invention is simple in structure, and is easy to maintenance, adopts permanent magnet, and the principle of utilizing magnetic force to repel each other is born maximum impact force with maximum rigidity, has cushioned maximum impact.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Specific embodiment
A kind of nd-fe-b magnetic material backstop of crane in bridge type; Comprise support 1, cylinder body 2 and piston body 4; Support 1 is fixed together with the shell of cylinder body 2, and the cylinder bottom of cylinder body 2 is columniform cylinder bottom permanent magnet rings 3 that have centre hole, and piston body 4 is movably arranged in the cylinder body 2; Inner central authorities at piston body 4 are fixedly connected with piston rod 7; The head of piston rod 7 is fixed together with cylindrical piston cap 8 after passing the centre hole of columniform cylinder bottom permanent magnet rings 3 of cylinder bottom of cylinder body 2, is set with cylinder top permanent magnet rings 6 in the junction of piston body 4 and piston rod 7, in cylinder body 2, is movably set with permanent magnet rings 9 in the cylinder; Piston rod 7 passes in the permanent magnet rings 9 from cylinder; The polarity of two magnetic poles of permanent magnet rings 9 adjacent surfaces is identical in cylinder bottom permanent magnet rings 3 and the cylinder, and permanent magnet rings 9 is identical with the polarity of two magnetic poles of cylinder top permanent magnet rings 6 adjacent surfaces in the cylinder, and cylindrical piston cap 8 is pulled together with cylinder bottom permanent magnet rings 3.The outer face of described piston body 4 is provided with cushion rubber 5.When the outer face of piston body 4 affords impact; Because cylindrical piston cap 8 and tightly adhesive of cylinder bottom permanent magnet rings 3; Make this magnetic force backstop bear huge impact power with bigger rigidity; Simultaneously, at the effect lower piston body 4 of this impulsive force to the cylinder bottom motion, at this moment in the cylinder repulsive force between permanent magnet rings 9 and the cylinder bottom permanent magnet rings 3 along with both near also increasing gradually; In like manner, in the cylinder repulsive force between permanent magnet rings 9 and the cylinder top permanent magnet rings 6 along with both near also strengthening gradually.
In cylinder body 2, can be provided with the opposite polarity permanent magnet of polylith bigger cushion stroke can be provided.
Claims (2)
1. the nd-fe-b magnetic material backstop of a crane in bridge type; Comprise support (1), cylinder body (2) and piston body (4); It is characterized in that; Support (1) is fixed together with the shell of cylinder body (2), and the cylinder bottom of cylinder body (2) is a columniform cylinder bottom permanent magnet rings (3) that has centre hole, and piston body (4) is movably arranged in the cylinder body (2); Inner central authorities at piston body (4) are fixedly connected with piston rod (7); The head of piston rod (7) is fixed together with cylindrical piston cap (8) after passing the centre hole of columniform cylinder bottom permanent magnet rings (3) of cylinder bottom of cylinder body (2), is set with cylinder top permanent magnet rings (6) in the junction of piston body (4) and piston rod (7), in cylinder body (2), is movably set with permanent magnet rings in the cylinder (9); Piston rod (7) passes in the permanent magnet rings (9) from cylinder; The polarity of two magnetic poles of permanent magnet rings (9) adjacent surface is identical in cylinder bottom permanent magnet rings (3) and the cylinder, and permanent magnet rings in the cylinder (9) is identical with the polarity of two magnetic poles of cylinder top permanent magnet rings (6) adjacent surface, and cylindrical piston cap (8) is pulled together with cylinder bottom permanent magnet rings (3).
2. the nd-fe-b magnetic material backstop of a kind of crane in bridge type according to claim 1 is characterized in that the outer face of described piston body (4) is provided with cushion rubber (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203346643U CN202245752U (en) | 2011-09-07 | 2011-09-07 | Neodymium iron boron magnetic material stopper for bridge crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203346643U CN202245752U (en) | 2011-09-07 | 2011-09-07 | Neodymium iron boron magnetic material stopper for bridge crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202245752U true CN202245752U (en) | 2012-05-30 |
Family
ID=46107026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203346643U Expired - Fee Related CN202245752U (en) | 2011-09-07 | 2011-09-07 | Neodymium iron boron magnetic material stopper for bridge crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202245752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10471584B2 (en) | 2018-03-27 | 2019-11-12 | Ford Motor Company | Tool system including non-contact positioning device |
-
2011
- 2011-09-07 CN CN2011203346643U patent/CN202245752U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10471584B2 (en) | 2018-03-27 | 2019-11-12 | Ford Motor Company | Tool system including non-contact positioning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20130907 |