CN2409392Y - DC electromagnetic brake with rectifier power source - Google Patents
DC electromagnetic brake with rectifier power source Download PDFInfo
- Publication number
- CN2409392Y CN2409392Y CN 99233182 CN99233182U CN2409392Y CN 2409392 Y CN2409392 Y CN 2409392Y CN 99233182 CN99233182 CN 99233182 CN 99233182 U CN99233182 U CN 99233182U CN 2409392 Y CN2409392 Y CN 2409392Y
- Authority
- CN
- China
- Prior art keywords
- brake
- electromagnet
- power source
- rectifier power
- hinged
- 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
The utility model relates to a braking device used for mechanical transmission in the technical field of hauling operation, which is composed of a braking part and a power rectifier. The utility model is characterized in that the lower end of an electromagnet and a left braking arm having a left braking scotch are together hinged on a base seat, the upper end of the electromagnet is hinged with a left connecting rod, the lower end of a right braking arm having a right braking scotch is hinged on the base seat, the upper end of the right braking arm is hinged with a right connecting rod, and the left and the right connecting rods are connected with each other through a push rod; an armature iron is fixed on the left braking arm, a force moment spring is arranged in a centre hole of the electromagnet, one end of the force moment spring is contacted with the armature iron, and the other end of the force moment spring is contacted with a spring seat which is fixed on the electromagnet. The utility model has the advantages of reasonable structure, reliable performance, large attraction force of the electromagnet, fast speed of attraction and release, low failure rate, and good performance; furthermore, the utility model can be operated normally in a DC 220 volt circuit and an AC 380 volt circuit.
Description
The utility model relates to and is used for mechanically operated braking device in the hauling operation field, specifically is the dc electromagnetic brake of band rectifier power source.
At present, the braking device of domestic materials handling equipment uses alternating electromagnetic break and fluid power pusher brake more, and the defective of these two kinds of breaks is that AC motor and AC electromagnetic coil are easily burnt, and seal arrangement is easily aging, produces seepage, and rate of fault is very high.Based on above-mentioned situation, there are a lot of producers to mix rectifier power source and replace alternating electromagnetic break and fluid power pusher brake with dc electromagnetic brake, though the rate of fault of dc electromagnetic brake own is not high, but still exist solenoid travel short, sucting speed was slow when stroke was long, installed and adjusted defectives such as still more loaded down with trivial details; Even more serious is that the rectifier power source supporting with it very easily burns, life-span is very short, this mainly is because present employed rectifier power source, the continuous current circuits that adopt A.C. contactor tripping magnet when outage more, to reach the purpose that electromagnet is discharged fast, so but cause electromagnet to produce very high counterelectromotive force, make that component is very easily breakdown to be burnt in when outage.
The purpose of this utility model is exactly to provide a kind of dc electromagnetic brake with rectifier power source at the problems referred to above, to overcome above-mentioned defective, have rational in infrastructure, reliable performance, electromagnet suction is big, adhesive and release rate are fast, the characteristics that rate of fault is low, can 220 volts of direct currents with exchange 380 volts circuit in normally operation.
The technical solution of the utility model is: be to be made of brake portion and rectifier power source, the lower end that it is characterized in that electromagnet is hinged on the base with the left brake arm that has left brake shoe, the upper end of electromagnet and left rod hinge connection, the lower end that has the right brake arm of right brake shoe is hinged on the base, the upper end and the right connecting rod of right brake arm are hinged, left and right sides connecting rod links together by push rod, armature is fixed on the left brake arm, the moment spring places in the center hole of electromagnet, one end contacts with armature, and the other end contacts with spring seat on being fixed on electromagnet.
According to technique scheme, design principle of the present utility model and working procedure are: under off-position, the elastic force of spring promotes left brake arm to the right by armature, simultaneously, by push rod right brake arm is spurred left, like this, left and right brake shoe is pressed to Brake drum simultaneously, to brake hub brake, thereby reach the purpose of braking.When power connection, electromagnet gets electric, and with the armature adhesive that is fixed on the left brake arm, spur left brake arm and be moved to the left, simultaneously, right brake arm is promoted to the right by push rod, like this, left and right brake shoe is the take-off the brake wheel simultaneously, reaches the purpose of brake off.Compact structure.Easy to adjust.
Rectifier power source of the present utility model comprises half-wave rectifying circuit, by R
1, R
2, C
3, C
4And the delay circuit that constitutes of IC and by C
5, R
3, R
4, R
5, D
4, SCR
1, SCR
2The trigger circuit and the rectification circuit that constitute, and respectively connect a piezoresistance at the ac output end and the dc output end of circuit.Like this, when circuit has just powered up, because C
3The voltage at two ends can not suddenly change, IC
6,7Pin is a low level, IC
3Pin output high level triggers SCR
1, SCR
1Conducting triggers the SCR2 conducting again.Through rectification circuit, export 340 volts of magnet excitation VDC at last, approximately after 1.5 seconds, C
3Charging, voltage is higher than 2/3VC, IC
3The pin output low level; SCR
3Cross zero to cut-off, SCR
2Also cross zero to cut-off.This moment, rectification circuit became the one way rectifier state, exported 170 volts and kept voltage.Electromagnet reasonable in design, and adhesive and release rate are fast.Owing to respectively connect a piezoresistance at the ac output end and the dc output end of circuit, the components and parts in can protective circuit are not by over-voltage breakdown.Be provided with fly-wheel diode simultaneously, eliminated the counterelectromotive force when cutting off the power supply.And using trigger circuit in circuit is the switching that electronic switch is realized high low voltage, does not have any mechanical contact, and the rate of fault of circuit is greatly reduced.
The two ends, the left and right sides of push rod of the present utility model have left-handed and right-handed thread respectively, with the screw-thread fit on the left and right connecting rod.As long as the turn push rod can draw left and right sides brake arm or push open over to one's side, to adjust the gap of brake shoe and Brake drum.Bolt is housed on base, corresponding with the limiting board of left brake arm lower end, when electromagnetic actuation, break is in the state of declutching, and bolt contacts with the limiting board of left brake arm lower end, thereby limit the distance that left brake shoe unclamps, electromagnet is pushed open right brake arm by push rod, so just can be made the gap uniformity between left and right sides brake shoe and the Brake drum, otherwise, have only left brake shoe to open when declutching, and right brake shoe is pressed on the Brake drum all the time.The length of spring of the present utility model is regulated by bolt, by the length of Regulation spring.It is the can regulate braking moment.Therefore, installation of the present utility model is adjusted very convenient, and rate of fault is low.
The dc electromagnetic brake novel structure of the band rectifier power source that the utility model provides, reasonable in design, the appropriate design of electromagnet makes its suction big, adhesive and release rate are fast, and the time is all less than 0.3 second, and the operating frequency height, install easy to adjust, rate of fault is low, and electromagnet is in 2-15 millimeter scope stroke, and its sucting speed can remain unchanged.Like this, even two dc electromagnetic brake parallel runnings can not produce the nonsynchronous phenomenon of action because the release air gap of electromagnet is different yet.Therefore, function admirable, can 220 volts of direct currents with exchange 380 volts circuit in normally operation.
Describe in detail below in conjunction with embodiment's accompanying drawing.
At first accompanying drawing is described:
Fig. 1 represents the structural representation of the utility model part brake;
Fig. 2 represents the circuit theory diagrams of rectifier power source.
The utility model is made of brake portion and rectifier power source, wherein the structure of brake portion as shown in Figure 1, the lower end that is electromagnet 10 is hinged on the base 1 with the left brake arm 14 that has left brake shoe 7, the upper end of electromagnet 10 and left connecting rod 8 are hinged, the lower end that has the right brake arm 4 of right brake shoe 3 is hinged on the base 1, the upper end and the right connecting rod 5 of right brake arm 4 are hinged, a left side, right connecting rod 8,5 link together by push rod 6, armature 16 is fixed on the left brake arm 14, moment spring 11 places in the center hole of electromagnet 10, one end contacts with armature 16, the other end contacts with spring seat 12 on being fixed on electromagnet 10, the two ends, the left and right sides of push rod 6 have left-handed and right-handed thread respectively, with a left side, right connecting rod 8, screw-thread fit on 5.Bolt 15 is housed on base 1, with left brake arm lower end limiting board corresponding.On left and right brake shoe 7,3, be equipped with and regulate bolt 2.Rectifier power source comprises by C
1, D
1, D
2, D
3And C
3Constitute half-wave rectifying circuit, by R
1, R
2, C
3, C
4And the delay circuit that constitutes of IC and by C
5, R
3, R
4, R
5, D
4, SCR
1, SCR
2The trigger circuit that constitute are by SCR
2, D
5, D
6, D
7Form bridge rectifier, and respectively meet a piezoresistance RM at the ac output end and the dc output end of circuit
1, RM
2D
3Be fly-wheel diode.9 for discharging nut, when having a power failure, plays a part to declutch.
Claims (6)
1, a kind of dc electromagnetic brake with rectifier power source, be to constitute by brake portion and rectifier power source, the lower end that it is characterized in that electromagnet is hinged on the base with the left brake arm that has left brake shoe, the upper end of electromagnet and left rod hinge connection, the lower end that has the right brake arm of right brake shoe is hinged on the base, the upper end and the right connecting rod of right brake arm are hinged, left and right sides connecting rod links together by push rod, armature is fixed on the left brake arm, the moment spring places in the center hole of electromagnet, one end contacts with armature, and the other end contacts with spring seat on being fixed on electromagnet.
2, the dc electromagnetic brake of band rectifier power source according to claim 1, it is characterized in that rectifier power source comprise half-wave rectifying circuit, by R
1, R
2, C
3, C
4And the delay circuit that constitutes of IC and by C
5, R
3, R
4, R
5, D
4, SCR
1, SCR
2The trigger circuit and the rectification circuit that constitute, and respectively connect a piezoresistance at the ac output end and the dc output end of circuit, be provided with fly-wheel diode.
3, the dc electromagnetic brake of band rectifier power source according to claim 1 is characterized in that the two ends, the left and right sides of push rod have left-handed and right-handed thread respectively, with the screw-thread fit on the left and right connecting rod.
4, the dc electromagnetic brake of band rectifier power source according to claim 1 is characterized in that being equipped with bolt on base, corresponding with the limiting board of left brake arm lower end.
5, the dc electromagnetic brake of band rectifier power source according to claim 1 is characterized in that the length of spring is regulated by bolt.
6, the dc electromagnetic brake of band rectifier power source according to claim 1 is characterized in that being equipped with the adjusting bolt on the brake shoe of the left and right sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99233182 CN2409392Y (en) | 1999-04-20 | 1999-04-20 | DC electromagnetic brake with rectifier power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99233182 CN2409392Y (en) | 1999-04-20 | 1999-04-20 | DC electromagnetic brake with rectifier power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2409392Y true CN2409392Y (en) | 2000-12-06 |
Family
ID=34021685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99233182 Expired - Fee Related CN2409392Y (en) | 1999-04-20 | 1999-04-20 | DC electromagnetic brake with rectifier power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2409392Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299109A (en) * | 2015-10-28 | 2016-02-03 | 嘉善烽火节能设备有限公司 | Push-rod brake with automatic rapid heat dissipation function |
-
1999
- 1999-04-20 CN CN 99233182 patent/CN2409392Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299109A (en) * | 2015-10-28 | 2016-02-03 | 嘉善烽火节能设备有限公司 | Push-rod brake with automatic rapid heat dissipation function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |