CN100416130C - Inner expanding type electromagnetic brake - Google Patents
Inner expanding type electromagnetic brake Download PDFInfo
- Publication number
- CN100416130C CN100416130C CNB2003101088702A CN200310108870A CN100416130C CN 100416130 C CN100416130 C CN 100416130C CN B2003101088702 A CNB2003101088702 A CN B2003101088702A CN 200310108870 A CN200310108870 A CN 200310108870A CN 100416130 C CN100416130 C CN 100416130C
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- brake
- braking
- spring
- type electromagnetic
- electromagnet
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Abstract
The present invention discloses an inner expanding type electromagnetic brake whose aim is to provide an inner expanding type electromagnetic brake which has small axial direction dimension, is arranged in a braking drum, and has the advantages of less action sound, easy fine adjustment, simple structure, convenient maintenance, and capacity of manual brake release and manual turning which are carried out simultaneously. The inner expanding type electromagnetic brake has the technical scheme that the inner expanding type electromagnetic brake comprises an electromagnet, a fixing element, a braking arm, a braking spring, a spring installing seat, a braking brake shoe and a braking piece. The integral brake is arranged in the braking drum. The electromagnet is arranged and fixed at the outer surface of the fixing element; one end of the braking arm corresponds to a moving element of the electromagnet, and the other end is connected with the braking spring arranged on the fixing element by the spring installing seat; the braking brake shoe is provided with the braking piece and is arranged on the braking arm; a rotating shaft of the braking arm is a bulge of the fixing element, and is contained in the braking drum in the radial dimension.
Description
Technical field
The present invention relates to a kind of electromagnetic brake, especially relate to a kind of internal-expansion type electromagnetic device that is arranged in the brake drum.
Background technique
Existing electromagnetic braking apparatus, great majority are disc type and drum brake.These breaks are arranged in the outside of hoist machine more, and size can not make full use of the inner space of inner rotor motor more greatly.
Internal-expansion type electromagnetic braking apparatus has some application on permanent-magnet synchnorous gearless dragging machine at present, as patent brake gear (patent No. P2001-39072, Japan Patent).But the drag friction power of these electromagnetic brakes by the supporting surface of brake block, does not often produce big additional moment to the break secured core; Owing to there is not brake arm, do not have lever ratio simultaneously, the electromagnet output of break requires bigger, and the volume requirement of break is also bigger, and carries out manual jiggering simultaneously and the comparatively difficulty that manually declutches, and often needs the power supply that declutches that adds for declutching.
Summary of the invention
The objective of the invention is to above-mentioned deficiency, propose a kind of being arranged in the brake drum, and motion and sound is little, the fine setting is easy, simple in structure, easy to maintenance, manually declutch and the manual jiggering internal-expansion type electromagnetic brake that can carry out simultaneously at prior art.
Above-mentioned purpose of the present invention is achieved through the following technical solutions: a kind of internal-expansion type electromagnetic brake, comprise electromagnet, fixed element, brake arm, brake spring, spring mounting seat, brake block, braking plate, whole break is arranged in the brake drum, described electromagnet is fixed on the outer surface of fixed element, and described brake arm one end is corresponding to the moving element of described electromagnet, and the other end is connected with brake spring, described brake spring is installed on the described fixed element by spring mounting seat, described brake block is provided with described braking plate and is installed on the described brake arm, and the rotatingshaft of described brake arm is the projection of fixed element, and rotatingshaft is included in the brake drum on radial dimension.
Described braking plate rotates and to move on the braking surface by the brake arm moving axis heart that rotates, and the drag friction forced direction between braking plate and the braking surface is through the center of rotation of brake arm; The moving element of described electromagnet is a movable core, and the end that described brake arm is corresponding with described movable core is provided with the trimming piece of fine-tuning this brake arm and movable core distance; Described electromagnet is provided with Returnning spring, yielding rubber and cam lever: described electromagnet, brake spring and brake block are arranged in the opening of fixed element; Described brake arm rotates in the post hinge constraint that the fixed element projection constitutes, and rotatingshaft is included in the brake drum on radial dimension, and the axle center is on the straight line of the action direction of drag friction power; Be provided with brake-shoe spring between described brake arm and the brake block, relative position is fixed between maintenance brake block and the brake arm; Also comprise the lever that manually declutches, the described lever that manually declutches links together with the cam lever that is installed in electromagnet inside.
Compare with prior art, the present invention has following beneficial effect:
1, because the drag friction forced direction between braking plate and the braking surface through the center of rotation of brake arm, therefore, can not produce additional moment to the break secured core;
2, volume is little, simple in structure;
3, manually declutch and manually jiggering can carry out simultaneously.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the schematic representation of brake block of the present invention;
Fig. 3 is the schematic representation of brake spring of the present invention.
Wherein, 1 is electromagnet; 2 is movable core: 3 are Returnning spring; 4 is magnetic guiding loop: 5 are coil: 6 are sensitive switch; 6a is that sensitive switch re-packs; 7 is ball screw; 8 is brake arm; 9 is cam lever; 10 are the lever that manually declutches: 11 are brake block; 12 is the brake shoe outer nut: 13 are the brake shoe bearing pin; 14 is Cock screw; 15 is jacking block under the brake shoe; 16 is brake-shoe spring; 17 is jacking block on the brake shoe; 18 spring mounting seats; 19 is spring mounting seat; 20 is brake spring; 21 is nut; 22 is the brake spring mounting plate; 23 is straight pin; 24 is the brake spring Cock screw; 25 is fixed element; 26 is the projection of fixed element; 27 is another projection of fixed element; 28a and 28b are the electromagnet mounting screw; 29 is brake spring mounting plate set screw; 30 is yielding rubber; 31 is the electromagnet end cap; 32 is braking plate; 33 is braking surface; 34 jiggering spatial position.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
As shown in Figure 1, break electromagnet internal structure of the present invention is made up of movable core 2, Returnning spring 3, magnetic guiding loop 4, coil 5, cam lever 9 and buffering rubber 30, and movable core 2 evaginations are connected with ball screw 7, and ball screw 7 is connected with brake arm 8.
The internal structure of electromagnet 1 has coil 5, magnetic guiding loop 4, movable core 2, Returnning spring 3, yielding rubber 30 and cam lever 9.Between movable core 2 and the electromagnet end cap 31 yielding rubber is arranged, therefore after break powered on, when movable core 2 attracted each other with electromagnet end cap 31, yielding rubber 30 will reduce the noise when colliding.Movable core 2 evaginations are connected with ball screw 7.The lever 10 that manually declutches of break is arranged in the outside of fixed element 25, by with cam lever 9 be connected the operation that operator can manually declutch easily.Because lever 10 is manually declutched in the same side with break in jiggering spatial position 34, therefore manually declutch and manually jiggering can carry out simultaneously.
Brake arm 8 one ends are connected with ball screw 7, and the other end is connected with brake spring 20; Brake arm 8 cuts with scissors rotation in the constraint in the projection 26 of fixed element with the posts that projection 27 constitutes, and the axle center of rotatingshaft is on the straight line of drag friction forced direction.Rotate ball screw 7 brake arm 8 moving axis that rotates is rotated, realize regulating the gap between braking plate 32 and the braking surface 33, the while is also adjusted the distance between brake arm 8 and the movable core 2.
When Returnning spring 3 is braked at break, keep the position as shown in Figure 1 of break movable core 2.Yielding rubber 30 plays buffer function when break declutches.Cam lever 9 and the lever 10 of manually declutching are formed the mechanism that manually declutches, and the lever 10 that manually declutches is in the outside of fixed element 25, and it is very easy therefore to realize manually declutching.Because jiggering spatial position 34 is positioned at break the same side with the lever 10 that manually declutches, so manually declutch and manual jiggering can carry out simultaneously.Brake arm 8 cuts with scissors rotation in the constraint in the projection 26 of fixed element with the posts that projection 27 constitutes, and this projection 26 and projection 27 are comprised in the braking surface 33 fully, and the axle center of rotatingshaft is on the straight line of drag friction masterpiece power thrusts.
As shown in Figure 2, brake block 11 is installed on the brake arm by brake shoe bearing pin 13.Brake shoe outer nut 12 is screwed in the brake block 11, and brake shoe bearing pin 13 is limited in the pin-and-hole that cooperates between brake block 11 and the brake arm 8 like this.Brake shoe bearing pin 13 has the shaft shoulder to connect in the macropore of brake block 11, thereby brake shoe bearing pin 13 can not move to the right side.The head of brake shoe bearing pin 13 has an inner bolt hole, after brake shoe outer nut 12 takes out, screw can be screwed into the inner bolt hole of brake shoe bearing pin, takes out brake shoe bearing pin 13.The self-align brake-shoe spring 16 of brake shoe is installed between brake arm 8 and brake block 11, compress this brake-shoe spring 16 and reaching jacking block 15 and Cock screw 14 generation frictional force under the brake shoe between jacking block on the brake shoe 17 and the brake block 11, thereby overcome the gravity of brake block 11, keep the relative position relation between brake block 11 and the brake arm 8.Cock screw 14 is screwed out brake block, and jacking block 15 utilizes the length of brake-shoe spring 16 to recover under the brake shoe, ejects brake block 11 automatically.Therefore, after jacking block under brake shoe bearing pin 13 and the brake shoe 15 took out, brake block can unload from brake arm 8 easily.
As shown in Figure 3, spring mounting seat 19 links together by straight pin 23 and brake arm 8, and brake spring 20 is installed between two spring mounting seats 18 and 19.Can regulate brake spring power by rotating nut 21.Brake spring Cock screw 24 is fixed between spring mounting seat 18 and the brake spring mounting plate 22.Brake spring mounting plate 22 is connected with fixed element 25 by brake spring mounting plate set screw 29, and is close to the projection 27 of fixed element, so the spring force of brake spring directly passes to the projection 27 of fixed element.Nut 21 is screwed to when being close to brake spring mounting plate 22, backs out brake spring mounting screw 29, brake spring 20, nut 21, spring mounting seat 18, spring mounting seat 19, brake spring Cock screw 24 and brake spring mounting plate 22 can be dismantled together.
The operating principle that this break declutches is after break powers on, movable core 2 attracts each other and moves with electromagnet end cap 31, simultaneously movable core 2 promotes brake arms 8 by ball screw 7 and rotates, so brake block 11 drives braking plates 32 and leave braking surface, realizes declutching of break.The sensitive switch 6a that re-packs also will move with brake arm, thereby make sensitive switch 6 actions.
This break braking maneuver principle is that brake arm 8 rotates under brake spring 20 spring force effects after the break outage, thereby drive brake block 11 and braking plate 32 move to braking surface, produce drag friction power, realize the braking maneuver of break.Because the action direction of drag friction power passes through the rotatingshaft axle center of brake arm 8, thereby can not produce additional moment.Brake arm 8 also will promote movable core 2 to left movement when rotating, and Returnning spring 3 will produce spring force and make movable core return to position shown in Figure 1 at this moment.
The present invention is owing to have lever ratio between braking plate 32 and brake spring 20, brake spring 20 and the break electromagnet 1, so the output of brake spring 20 and break electromagnet 1 requirement reduction, the heating of break and temperature rise condition improved.
Core of the present invention is whole break is placed in the braking surface, produces the axle center that the frictional force action direction is rotated by brake arm between braking plate and the braking surface, and the installation of break, dismounting and fine setting are very easy to.The present invention is break theory structure and spatial arrangement, thereby can carry out various variations on the basis of core content of the present invention.
Claims (8)
1. internal-expansion type electromagnetic brake, comprise electromagnet, fixed element, brake arm, brake spring, spring mounting seat, brake block, braking plate, whole break is arranged in the brake drum, it is characterized in that: described electromagnet is fixed on the outer surface of fixed element, and described brake arm one end is corresponding to the moving element of described electromagnet, and the other end is connected with brake spring, described brake spring is installed on the described fixed element by spring mounting seat, described brake block is provided with described braking plate and is installed on the described brake arm, and the rotatingshaft of described brake arm is the projection of fixed element, and rotatingshaft is included in the brake drum on radial dimension.
2. internal-expansion type electromagnetic brake according to claim 1, it is characterized in that: described braking plate rotates and to move on the braking surface by the brake arm moving axis heart that rotates, and the drag friction forced direction between braking plate and the braking surface is through the center of rotation of brake arm.
3. internal-expansion type electromagnetic brake according to claim 1, it is characterized in that: the moving element of described electromagnet is a movable core, and the end that described brake arm is corresponding with described movable core is provided with the trimming piece of fine-tuning this brake arm and movable core distance.
4. internal-expansion type electromagnetic brake according to claim 1 is characterized in that: described electromagnet is provided with Returnning spring, yielding rubber and cam lever.
5. according to any one described internal-expansion type electromagnetic brake in the claim 1 to 4, it is characterized in that: described electromagnet, brake spring and brake block are arranged in the opening of fixed element.
6. according to any one described internal-expansion type electromagnetic brake in the claim 1 to 4, it is characterized in that: described brake arm rotates in the post hinge constraint that the fixed element projection constitutes, rotatingshaft is included in the brake drum on radial dimension, and the axle center is on the straight line of the action direction of drag friction power.
7. according to any one described internal-expansion type electromagnetic brake in the claim 1 to 4, it is characterized in that: be provided with brake-shoe spring between described brake arm and the brake block, relative position is fixed between maintenance brake block and the brake arm.
8. internal-expansion type electromagnetic brake according to claim 4 is characterized in that: also comprise the lever that manually declutches, the described lever that manually declutches links together with the cam lever that is installed in electromagnet inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101088702A CN100416130C (en) | 2003-11-26 | 2003-11-26 | Inner expanding type electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101088702A CN100416130C (en) | 2003-11-26 | 2003-11-26 | Inner expanding type electromagnetic brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621706A CN1621706A (en) | 2005-06-01 |
| CN100416130C true CN100416130C (en) | 2008-09-03 |
Family
ID=34758754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101088702A Expired - Fee Related CN100416130C (en) | 2003-11-26 | 2003-11-26 | Inner expanding type electromagnetic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100416130C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009029090A1 (en) * | 2009-09-02 | 2011-03-31 | Robert Bosch Gmbh | Emergency brake system for machine tools |
| CN114179846A (en) * | 2021-12-28 | 2022-03-15 | 中车长春轨道客车股份有限公司 | Pure electric control treading type electromagnetic brake for rail vehicle braking system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4805741A (en) * | 1986-03-10 | 1989-02-21 | Kone Elevator Gmbh | Elevator brake |
| CN2066531U (en) * | 1990-05-11 | 1990-11-28 | 建设部长沙建筑机械研究所 | Electromagnetic brake |
| CN2242994Y (en) * | 1995-07-17 | 1996-12-18 | 李正人 | Friction type electromagnetic clutch brake |
| US6119823A (en) * | 1997-08-18 | 2000-09-19 | Mitsubishi Denki Kabushiki Kaisha | Brake mechanism for rotator |
| JP2001039072A (en) * | 1999-07-30 | 2001-02-13 | Suga:Kk | Temporary binding device |
-
2003
- 2003-11-26 CN CNB2003101088702A patent/CN100416130C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4805741A (en) * | 1986-03-10 | 1989-02-21 | Kone Elevator Gmbh | Elevator brake |
| CN2066531U (en) * | 1990-05-11 | 1990-11-28 | 建设部长沙建筑机械研究所 | Electromagnetic brake |
| CN2242994Y (en) * | 1995-07-17 | 1996-12-18 | 李正人 | Friction type electromagnetic clutch brake |
| US6119823A (en) * | 1997-08-18 | 2000-09-19 | Mitsubishi Denki Kabushiki Kaisha | Brake mechanism for rotator |
| JP2001039072A (en) * | 1999-07-30 | 2001-02-13 | Suga:Kk | Temporary binding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1621706A (en) | 2005-06-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20080903 Termination date: 20191126 |