CN115818493A - Mute brake for elevator traction machine - Google Patents
Mute brake for elevator traction machine Download PDFInfo
- Publication number
- CN115818493A CN115818493A CN202211621712.6A CN202211621712A CN115818493A CN 115818493 A CN115818493 A CN 115818493A CN 202211621712 A CN202211621712 A CN 202211621712A CN 115818493 A CN115818493 A CN 115818493A
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- armature
- brake
- electromagnet
- magnet
- electro
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims description 4
- 230000035939 shock Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 5
- 125000003003 spiro group Chemical group 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Braking Arrangements (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention discloses a silent brake for an elevator traction machine, which comprises an armature, wherein one side of the armature is provided with an electromagnet, the other side of the armature is provided with a base plate, the base plate is provided with a friction plate, the friction surface of the friction plate is an arc surface, the electromagnet is provided with blind holes, a spring is arranged in one part of the blind holes, and coils are arranged in the other blind holes; a plurality of hollow bolts are arranged between the armature and the electromagnet, and mounting bolts are arranged in the hollow bolts; still include the mechanism that declutches, the mechanism that declutches is equipped with the nut including the declutching handle that is located electro-magnet one side and the declutching screw that passes armature, electro-magnet, declutching handle in proper order on the declutching screw, is equipped with the steel ball between declutching handle and the electro-magnet, the electro-magnet is equipped with a plurality of cavities towards one side of armature, is equipped with the slider in the cavity, and the slider is equipped with the shock pad towards one side of armature, and the opposite side of slider is equipped with the ejector pin with the electro-magnet spiro union, and the tip that the electro-magnet was stretched out to the ejector pin is equipped with lock nut. The invention has the advantages of low noise and good use effect.
Description
Technical Field
The invention belongs to the field of shaft brake brakes for elevator traction machines.
Background
The shaft brake (brake for short) is a brake commonly used on an elevator tractor, and structurally comprises an armature, wherein one side of the armature is provided with an electromagnet, the other side of the armature is provided with a base plate, the base plate is provided with a friction plate, the friction plate is in plane contact with the base plate, the friction surface of the friction plate is an arc surface, the arc surface is matched with the outer peripheral surface of a tractor rotor of the tractor, blind holes are formed in the electromagnet, a spring is arranged in one part of the blind holes, and coils are arranged in the other blind holes; a hollow bolt is arranged between the armature and the electromagnet, the hollow bolt is fixed with the electromagnet, the hollow bolt and the armature are precisely matched to realize sliding connection, a mounting bolt is arranged in the hollow bolt, the electromagnet is fixed on a traction machine by the mounting bolt, and the hollow bolt is in sliding connection with the armature; still include the release mechanism, the release mechanism is including the release handle that is located electro-magnet one side and the release screw that passes armature, electro-magnet, release handle in proper order, all remains great space between release screw and the armature and between release screw and the electro-magnet, is equipped with the nut on the release screw, is equipped with the steel ball between release handle and the electro-magnet, all is equipped with on release handle and the electro-magnet with steel ball complex recess.
The working principle of the existing brake is that when a coil is powered on, magnetic force is generated to enable an armature to move to one side of an electromagnet, a spring is compressed, a hollow bolt guides the moving direction of the armature, the armature drives a friction plate to be far away from a tractor rotor through a backing plate, the tractor rotor is not limited and can rotate, otherwise, when the coil is powered off, the friction plate is attached to the tractor rotor under the action of the spring, the tractor rotor cannot rotate, and braking on the tractor is achieved. When the elevator is maintained, the coil is in a power-off state, and the brake release handle is rotated, so that the friction plate can be pressed on the traction machine rotor or not pressed on the traction machine rotor.
During the use process, when the coil is electrified, the armature collides with the electromagnet, so that high noise is generated, and the working noise of the brake is high. And, armature leads to through four hollow bolt direction when removing, and is high to hollow bolt's position accuracy requirement, all is difficult to guarantee in processing and equipment stage, leads to armature to take place the jamming easily, and the result of use is relatively poor.
Therefore, the existing brake has the defects of high noise and poor use effect.
Disclosure of Invention
The invention aims to provide a mute brake for an elevator traction machine. The invention has the advantages of low noise and good use effect.
The technical scheme of the invention is as follows: a silent brake for an elevator traction machine comprises an armature, wherein one side of the armature is provided with an electromagnet, the other side of the armature is provided with a base plate, the base plate is provided with a friction plate, the friction surface of the friction plate is an arc surface, the electromagnet is provided with blind holes, a spring is arranged in one part of the blind holes, and coils are arranged in the rest blind holes; a plurality of hollow bolts are arranged between the armature and the electromagnet, and the hollow bolts fix the electromagnet on the traction machine through mounting bolts; still include the mechanism that declutches, the mechanism that declutches is including the declutching handle that is located electro-magnet one side and the declutching screw that passes armature, electro-magnet, declutching handle in proper order, is equipped with the nut on the declutching screw, is equipped with the steel ball between declutching handle and the electro-magnet, all be equipped with on declutching handle and the electro-magnet with steel ball complex recess, the electro-magnet is equipped with the cavity of a plurality of circumference distributions towards one side of armature, is equipped with the slider in the cavity, and the slider is equipped with the shock pad towards one side of armature, and the cavity is stretched out to the top surface of shock pad, and the opposite side of slider is equipped with the ejector pin with the electro-magnet spiro union, and the electro-magnet is stretched out to the ejector pin, and the tip that the electro-magnet was stretched out to the ejector pin is equipped with lock nut.
In the mute brake for the elevator traction machine, the hollow bolt is in clearance fit with the armature, and an O-shaped ring is arranged between the hollow bolt and the armature.
In the mute brake for the elevator traction machine, the brake releasing screw is a stopper screw, an optical axis part of the brake releasing screw is in interference fit with the armature, and a shaft sleeve is arranged between the optical axis part of the brake releasing screw and the electromagnet.
In the mute brake for the elevator traction machine, a joint surface between the friction plate and the backing plate is parallel to a friction surface of the friction plate.
Compared with the prior art, the invention is based on the prior brake, and the improvements are made as follows,
(1) The cavity is formed in the electromagnet, the shock absorption pad is arranged in the cavity, the cavity is extended out of the top surface of the shock absorption pad, so that when the armature moves towards the electromagnet, the armature is contacted with the flexible shock absorption pad firstly, the impact force of the armature is reduced greatly, the armature is not collided with the electromagnet, or only slightly collided, the collision noise is reduced greatly, and the noise of the brake is reduced. Because the shock pad can be compressed and deformed after being used for a period of time, the extension of the shock absorption plate can be reduced, and the armature iron and the electromagnet can be violently collided.
The shock pad is located in the slider groove, only the upper end face and the lower end face of the shock pad are in contact with the armature and the slider, the shock pad is not easily influenced by temperature rise of a brake, the shock pad is not in direct contact with the electromagnet, the side face of the shock pad cannot rub against the electromagnet, stability of the shock pad is improved, and the shock pad is not easily aged.
(2) Hollow bolt and armature change into clearance fit, and hollow bolt no longer plays the guide effect, even hollow bolt's position precision is relatively poor, also can not lead to the fact the interference to the removal of armature, can not lead to the armature jamming. The invention fully utilizes the brake release screw, the brake release screw is fixed on the armature through interference fit with the armature, a shaft sleeve is arranged between the brake release screw and the electromagnet, and the armature is guided by the brake release screw.
(3) The combination surface between the friction plate and the backing plate is parallel to the friction surface of the friction plate, namely the friction plate has uniform thickness. Long-term research shows that the friction plate used in the brake is made of rubber or resin and is relatively soft, when the brake acts, the friction plate can impact a tractor rotor, the friction plate can deform greatly under the inertia drive of the tractor rotor, the difference of deformation quantity of each region is large due to large wall thickness difference of each region of the conventional friction plate, the friction plate is difficult to be well attached to the tractor rotor, so that deflection torque force is formed, the friction plate acts on an armature reversely, and the armature shakes to form noise. According to the invention, after the friction plate is improved to be of uniform wall thickness, the friction plate can be well attached to the tractor rotor, and the noise of the shaking of the armature iron is reduced.
Therefore, the invention has the advantages of low noise and good use effect.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a friction plate of a conventional brake.
Fig. 3 is a schematic view when the present invention is applied to a bar type traction machine.
The labels in the figures are: 1-armature, 2-electromagnet, 3-backing plate, 4-friction plate, 5-spring, 6-coil, 7-hollow bolt, 8-mounting bolt, 9-brake release handle, 10-brake release screw, 11-nut, 12-steel ball, 13-groove, 14-concave cavity, 15-shock pad, 16-ejector rod, 17-O-shaped ring, 18-shaft sleeve, 19-sliding block and 20-friction plate component.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. A mute brake for an elevator traction machine is shown in figure 1 and comprises an armature 1, wherein one side of the armature 1 is provided with an electromagnet 2, the other side of the armature 1 is provided with an aluminum backing plate 3, the backing plate 3 is provided with a friction plate 4, the friction surface of the friction plate 4 is an arc surface, the electromagnet 2 is provided with blind holes, a part of the blind holes are internally provided with springs 5, and the rest blind holes are internally provided with coils 6; a plurality of hollow bolts 7 are arranged between the armature 1 and the electromagnet 2, the hollow bolts 7 are in threaded connection with the electromagnet 2, the hollow bolts 7 are in clearance fit with the armature 1, mounting bolts 8 are arranged in the hollow bolts 7, and the electromagnet 2 is fixed on a traction machine through the mounting bolts 8; the brake release mechanism comprises a brake release handle 9 positioned on one side of the electromagnet 2 and a brake release screw 10 sequentially penetrating through the armature 1, the electromagnet 2 and the brake release handle 9, a nut 11 is arranged on the brake release screw 10, a steel ball 12 is arranged between the brake release handle 9 and the electromagnet 2, grooves 13 matched with the steel ball 12 are formed in the brake release handle 9 and the electromagnet 2, and the brake release mechanism is characterized in that a plurality of circumferentially distributed cavities 14 are formed in one side, facing the armature 1, of the electromagnet 2, a sliding block 19 is arranged in each cavity 14, a damping pad 15 made of rubber materials is arranged on one side, facing the armature 1, of each sliding block 19, the top surface of each damping pad 15 extends out of each cavity 14, an ejector rod 16 in threaded connection with the electromagnet 2 is arranged on the other side of each sliding block 19, the ejector rod 16 extends out of the electromagnet 2, a locking nut 21 is arranged at the end, and the ejector rod 16 is prevented from moving axially through the locking nut 21. The extension distance of the damper plate 15 is adjusted by rotating the jack 16.
The hollow bolt 7 is in clearance fit with the armature 1, and an O-shaped ring 17 is arranged between the hollow bolt 7 and the armature 1.
The brake release screw 10 is a stopper screw, a light shaft part of the brake release screw 10 is in interference fit with the armature 1, and a shaft sleeve 18 is arranged between the light shaft part of the brake release screw 10 and the electromagnet 2.
The joint surface between the friction plate 4 and the backing plate 3 is parallel to the friction surface of the friction plate 4.
The working principle is the same as that of the existing brake, and the difference is that when the armature 1 moves towards the electromagnet 2, the armature 1 is buffered by the shock absorption pad 15 when being about to touch the electromagnet 2, so that the armature 1 does not directly collide with the electromagnet 2 or collides with the electromagnet 2 only at a very small speed, the generation of noise is avoided or reduced, in the moving process, the axial guide is carried out on the optical axis part of the brake release screw 10, and the circumferential rotation and the auxiliary guide are avoided by the O-shaped ring outside the hollow bolt 7. In use, when the cushion 15 is compressed and the length is reduced, the rod 16 is screwed inward a short distance to restore the cushion 15 to its extended position.
In addition, the invention can be used for not only a block type tractor, but also a strip type tractor. When the brake is used for the bar-type tractor, as shown in fig. 3, the friction plate 4 and the backing plate 3 are removed, and two sets of brakes are matched with the friction plate assembly, so that the brake can be used as a mute brake of the bar-type tractor.
Claims (4)
1. A mute brake for an elevator traction machine comprises an armature (1), wherein one side of the armature (1) is provided with an electromagnet (2), the other side of the armature (1) is provided with a backing plate (3), the backing plate (3) is provided with a friction plate (4), the friction surface of the friction plate (4) is an arc surface, blind holes are formed in the electromagnet (2), a spring (5) is arranged in one part of the blind holes, and coils (6) are arranged in the rest blind holes; a plurality of hollow bolts (7) are arranged between the armature (1) and the electromagnet (2), mounting bolts (8) are arranged in the hollow bolts (7), and the electromagnet (2) is fixed on the traction machine by the mounting bolts (8); still include the mechanism that declutches, declutch brake mechanism is equipped with nut (11) including declutch brake handle (9) that are located electro-magnet (2) one side and the declutch brake screw (10) that pass armature (1), electro-magnet (2), declutch brake handle (9) in proper order on declutch brake screw (10), is equipped with steel ball (12) between declutch brake handle (9) and electro-magnet (2), all be equipped with on declutch brake handle (9) and electro-magnet (2) with steel ball (12) complex recess (13), its characterized in that: one side of the electromagnet (2) facing the armature (1) is provided with a plurality of cavities (14) distributed in the circumferential direction, a sliding block (19) is arranged in each cavity (14), one side of the sliding block (19) facing the armature (1) is provided with a damping pad (15), the top surface of each damping pad (15) extends out of each cavity (14), the other side of each sliding block (19) is provided with an ejector rod (16) in threaded connection with the electromagnet (2), each ejector rod (16) extends out of the electromagnet (2), and the end part of each ejector rod (16) extending out of the electromagnet (2) is provided with a locking nut (21).
2. The silent brake for an elevator traction machine according to claim 1, characterized in that: the hollow bolt (7) is in clearance fit with the armature (1), and an O-shaped ring (17) is arranged between the hollow bolt (7) and the armature (1).
3. The silent brake for an elevator traction machine according to claim 1, characterized in that: the brake release screw (10) is a stopper screw, the light shaft part of the brake release screw (10) is in interference fit with the armature (1), and a shaft sleeve (18) is arranged between the light shaft part of the brake release screw (10) and the electromagnet (2).
4. The silent brake for an elevator traction machine according to claim 1, characterized in that: the joint surface between the friction plate (4) and the backing plate (3) is parallel to the friction surface of the friction plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621712.6A CN115818493A (en) | 2022-12-16 | 2022-12-16 | Mute brake for elevator traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211621712.6A CN115818493A (en) | 2022-12-16 | 2022-12-16 | Mute brake for elevator traction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115818493A true CN115818493A (en) | 2023-03-21 |
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ID=85516251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211621712.6A Pending CN115818493A (en) | 2022-12-16 | 2022-12-16 | Mute brake for elevator traction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115818493A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202194985U (en) * | 2011-08-16 | 2012-04-18 | 成都瑞迪机械实业有限公司 | Electromagnetic brake with double action and low noise |
| CN104944313A (en) * | 2015-06-25 | 2015-09-30 | 浙江玛拓驱动设备有限公司 | Brake connecting structure |
| WO2016123289A1 (en) * | 2015-01-29 | 2016-08-04 | Ebo Group, Inc. | Electromagnetic-released, multi-disc enclosed safety brake |
| CN208747534U (en) * | 2018-09-14 | 2019-04-16 | 浙江玛拓驱动设备有限公司 | Elevator brake fixes device with resilient cushion |
| CN210859624U (en) * | 2019-10-24 | 2020-06-26 | 南京远大智能工业有限公司 | Elevator electromagnetic brake with easily-replaced and maintained shock pad |
| CN216426584U (en) * | 2021-12-02 | 2022-05-03 | 浙江玛拓驱动设备有限公司 | Brake free of brake clearance maintenance |
| CN217102586U (en) * | 2022-03-04 | 2022-08-02 | 浙江玛拓驱动设备有限公司 | Large-load electromagnetic brake |
| CN219098619U (en) * | 2022-12-16 | 2023-05-30 | 浙江玛拓驱动设备有限公司 | Mute brake for elevator traction machine |
-
2022
- 2022-12-16 CN CN202211621712.6A patent/CN115818493A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202194985U (en) * | 2011-08-16 | 2012-04-18 | 成都瑞迪机械实业有限公司 | Electromagnetic brake with double action and low noise |
| WO2016123289A1 (en) * | 2015-01-29 | 2016-08-04 | Ebo Group, Inc. | Electromagnetic-released, multi-disc enclosed safety brake |
| CN104944313A (en) * | 2015-06-25 | 2015-09-30 | 浙江玛拓驱动设备有限公司 | Brake connecting structure |
| CN208747534U (en) * | 2018-09-14 | 2019-04-16 | 浙江玛拓驱动设备有限公司 | Elevator brake fixes device with resilient cushion |
| CN210859624U (en) * | 2019-10-24 | 2020-06-26 | 南京远大智能工业有限公司 | Elevator electromagnetic brake with easily-replaced and maintained shock pad |
| CN216426584U (en) * | 2021-12-02 | 2022-05-03 | 浙江玛拓驱动设备有限公司 | Brake free of brake clearance maintenance |
| CN217102586U (en) * | 2022-03-04 | 2022-08-02 | 浙江玛拓驱动设备有限公司 | Large-load electromagnetic brake |
| CN219098619U (en) * | 2022-12-16 | 2023-05-30 | 浙江玛拓驱动设备有限公司 | Mute brake for elevator traction machine |
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