CN114803923B - Disc brake and traction machine - Google Patents
Disc brake and traction machine Download PDFInfo
- Publication number
- CN114803923B CN114803923B CN202210344542.5A CN202210344542A CN114803923B CN 114803923 B CN114803923 B CN 114803923B CN 202210344542 A CN202210344542 A CN 202210344542A CN 114803923 B CN114803923 B CN 114803923B
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- Prior art keywords
- piece
- control
- brake
- floating
- adjusting
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Abstract
The invention discloses a brake device which comprises a brake mechanism and a brake position, wherein the brake mechanism comprises a control assembly and a middle subassembly; the middle dividing component comprises an adjusting piece and a floating piece; one end of the adjusting piece is fixed, and the other end of the adjusting piece is connected with the floating piece; the floating piece is connected with the control assembly; the control component is opened, the floating part is close to the braking position, and the adjusting part is compressed for energy storage; the control assembly is incorporated and the adjustment member is released and the float member is moved away from the braking position. The invention can realize the braking of the motor of the traction machine and has the function of preventing the brake dragging.
Description
Technical Field
The invention belongs to the field of elevator traction machines, and particularly relates to a disc brake.
Background
Nowadays, elevator safety accidents occur frequently for various reasons, so that the requirements on elevator safety are increased accordingly. The brake is one of the most important safety components of an elevator. The brake structure types commonly used at present are drum type (hub type) brakes, disc type brakes and plate type (block type) brakes. The main machine brake structure of the steel belt elevator mainly comprises a disc brake.
The conventional brake includes an electromagnetic portion, a brake spring, an armature, a brake disk, a brake pad, and the like. The electromagnetic part can generate electromagnetic force to attract the armature in the electrified state, so that the armature moves towards the electromagnetic part side against the spring, and the brake pad is separated from the armature. Because the brake pads of the electromagnetic part and the armature part can not be completely separated from the brake disc, after long-time use and abrasion, when the brake pad on one side fails, the brake can not work, and the safety accident of the elevator is easily caused.
Disclosure of Invention
The invention aims to provide a disc brake, which can realize the braking of a motor of a tractor and has the function of preventing dragging brake.
The technical scheme for achieving the purpose comprises the following steps.
The invention provides a disc brake, which comprises a brake mechanism, a brake device and a brake device, wherein the brake mechanism comprises a control assembly and a middle subassembly;
the middle dividing component comprises an adjusting piece and a floating piece; one end of the adjusting piece is fixed, and the other end of the adjusting piece is connected with the floating piece; the floating piece is connected with the control assembly; a gap exists between the control assembly and the floating piece, and the gap is a braking position;
the control component is opened, the floating part is close to the braking position, and the adjusting part is compressed for energy storage;
the control assembly is incorporated and the adjustment member is released and the float member is moved away from the braking position.
In some embodiments, the midsplit assembly further comprises a limiting member, and the limiting member is positioned on one side of the floating member away from the braking position.
In some of these embodiments, the control assembly is disposed outboard of the braking position; the float is disposed inboard of the braking position.
In some of these embodiments, the control assembly includes a spring, a first control member, and a second control member; the elastic piece is arranged between the first control piece and the second control piece; the floating piece is connected with the first control piece.
In some embodiments, the floating piece is provided with a fixing part, and the fixing part is arranged outside the braking position; the fixed part is connected with the first control piece; when the control assembly is opened, the distance between the fixing part and the braking position is larger than the distance between the first control part and the second control part.
In some of these embodiments, further comprising an inspection switch disposed on the first control member; when the control components are combined, the second control piece acts on the inspection switch.
In some embodiments, the adjusting pieces are provided in two, and the two adjusting pieces are symmetrically arranged.
In some of these embodiments, two braking mechanisms are provided.
In some of these embodiments, the float is provided with a connection; the connecting part is provided with a movable hole; the halving assembly also comprises a guide post; one end of the guide post is fixed, and the other end of the guide post penetrates through the movable hole; the adjusting piece is connected to the connecting portion and the guide post.
The invention also provides a traction machine, which comprises a main shaft, a connecting key, a main shaft cover, a brake disc and a disc brake, wherein the brake disc is connected with the main shaft through the connecting key, and the main shaft cover is fixed on the end surface of the main shaft and extends to the brake disc.
The technical scheme provided by the invention has the following advantages and effects:
the invention adopts the braking mechanism to realize the braking function of the traction machine; the brake mechanism comprises a control assembly and a middle subassembly, wherein the middle subassembly comprises an adjusting piece and a floating piece; a gap exists between the control assembly and the floating piece, and the gap is a braking position; the floating part is connected with the control assembly, one end of the adjusting part is fixed, the other end of the adjusting part is connected with the floating part, and the adjusting part is used for adjusting the distance between the floating part and the braking position so as to avoid the risk of drag brake operation; the control assembly is opened, the floating part is close to the braking position, so that a brake disc of the tractor brakes, and the adjusting part compresses for energy storage; the control assembly is combined, the adjusting piece is released, and the floating piece is far away from the braking position, so that the brake disc of the traction machine is released.
Drawings
FIG. 1 is a perspective view of a disc brake;
FIG. 2 is another schematic view of the construction of the disc brake;
FIG. 3 is a schematic diagram of the internal structure of the disc brake in the braking state;
FIG. 4 is an internal schematic view of the disc brake during activation;
FIG. 5 is an internal schematic view of the disc brake in a released state;
FIG. 6 is a perspective view of a float member of the disc brake;
fig. 7 is a perspective view illustrating a traction machine;
fig. 8 is a schematic view of the installation of a brake disk of the traction machine.
Description of the reference numerals:
1. a traction machine; 2. a brake mechanism; 3. a control component; 31. an elastic member; 32. a first control member; 33. A second control member; 34. a first brake member; 35. a second brake member; 36. a connecting member; 4. a center-dividing component; 41. an adjustment member; 42. a float member; 43. a limiting member; 44. a guide post; 5. a check switch; 6. a motor base of the traction machine; 7. a connecting key; 8. a main shaft; 81. a main shaft cover; 9. a brake disk.
Detailed Description
In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.
As used herein, unless otherwise specified or defined, "first, \ 8230," is used merely to distinguish between names, and does not denote a particular quantity or order.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.
It should be noted that "fixed" and "connected" in this document may be directly fixed or connected to one element or may be indirectly fixed or connected to one element.
The embodiment provides a disc brake which is arranged on a traction machine 1; as shown in fig. 7, the disc brake includes two brake mechanisms 2, and the two brake mechanisms 2 can increase the braking effect and simultaneously play a role in standby, so as to prevent the whole brake from being incapable of operating due to the failure of one brake mechanism 2.
The two brake mechanisms 2 are arranged on the tractor in parallel from left to right, and the two brake mechanisms 2 act on the brake disc 9 simultaneously; in other embodiments, the installation direction of the two brake mechanisms 2 may be up-down installation or inclined shoulder installation, and the installation direction of the two brake mechanisms 2 is not limited by the present invention.
As shown in fig. 1 to 3, the brake mechanism 2 includes a control assembly 3, a center-dividing assembly 4 and an inspection switch 5; the control assembly 3 comprises a resilient member 31, a first control member 32, a second control member 33, a first braking member 34, a second braking member 35 and a connecting member 36; the elastic member 31 is disposed between the first control member 32 and the second control member 33; the elastic member 31 is a spring, the first control member 32 is an electromagnet, and the second control member 33 is a magnet; the elastic member 31 releases the elastic force, and the first control member 32 and the second control member 33 are separated, so that the control assembly 3 is opened; as shown in fig. 3, the first control member 32 is energized, and the first control member 32 and the second control member 33 are tightly attached, so that the control components 3 are combined; in other embodiments, it can be said that the first control element 32 is a magnet, and the second control element 33 is an electromagnet, so as to achieve mutual attraction between the first control element 32 and the second control element 33 when the power is turned on, which is not limited by the present invention.
A gap exists between the control assembly 3 and the float member 42, the gap being a braking position, in particular, between the float member 42 and the second control member 33; the brake disc 9 is arranged in the braking position.
The midsplit assembly 4 comprises an adjusting piece 41, a floating piece 42, a limiting piece 43 and a guide column 44; one end of the adjusting piece 41 is fixed, the other end of the adjusting piece 41 is connected with the floating piece 42, and the adjusting piece 41 is used for adjusting the distance between the floating piece 42 and the braking position so as to avoid the risk of drag brake operation; the floating member 42 has one end fixedly connected to the first control member 32 and the other end connected to the first brake member 34; one end of the connecting piece 36 is fixedly connected with the second control piece 33, and the other end is connected with the second braking piece 35; the first braking piece 34 and the second braking piece 35 are respectively arranged at two sides of the braking position, and the arrangement of the two braking pieces can accelerate the braking efficiency; the limiting piece 43 is positioned on one side of the floating piece 42 far away from the braking position, and the limiting piece 43 is used for limiting the movement of the floating piece 42; the connecting member 36 is a connecting plate.
In other embodiments, the adjustment member 41 may be connected to the connection member 36; the adjusting member 41 can be arranged on the side of the connecting member 36 away from the braking position, and after the first control member 32 is electrified, the connecting member 36 is pulled back to the proper position by using the pulling force of the adjusting member 41; or on the side of the connecting element 36 close to the braking position, after the first control element 32 is powered on, the brake disc 9 is rebounded to the proper position by the elastic force of the adjusting element 41; the first control piece 32 is electrified, the first control piece 32 and the second control piece 33 are tightly attached, if the second control piece 33 is not moved, the first control piece 32 approaches to the second control piece 33, the floating piece 42 is driven to be far away from the braking position, the elastic piece 31 is compressed at the moment, the connecting piece 36 is not influenced by the elastic force of the elastic piece 31 any more, the adjusting piece 41 is released, the elastic force or the tensile force of the adjusting piece 41 enables the connecting piece 36 to be far away from the braking position, and therefore the first brake piece 34 and the second brake piece 35 are far away from the brake disc 9 of the tractor 1, and the brake dragging risk is avoided; and after the brake disc 9 of the traction machine 1 is released, the two brake pieces are symmetrically distributed by taking the brake disc 9 as the center, so that the time difference that the two brake pieces can reach the brake disc 9 when the brake is performed again is reduced.
The control assembly 3 is separated to bring the floating member 42 and the connecting member 36 close to the braking position, so that the first brake member 34 and the second brake member 35 abut against the brake disc 9, the brake disc 9 brakes, as shown in fig. 3, the butterfly brake is in a braking state, and the adjusting member 41 compresses and stores energy; the control assembly 3 is combined to drive the floating piece 42 and the connecting piece 36 to be far away from the brake disc 9, the brake disc 9 is released, meanwhile, the adjusting piece 41 is released, the elastic force of the adjusting piece 41 enables the floating piece 42 to be far away from the brake disc 9, and the floating piece 42 is prevented from being still kept at the original position due to inertia; the adjusting member 41 is a spring, and in other embodiments, the adjusting member 41 may be other elastic materials such as elastic rubber band.
The control assembly 3 is arranged outside the braking position, i.e. outside the brake disc 9, and the float 42 is arranged inside the braking position, i.e. inside the brake disc 9; the control component 3 comprises a plurality of parts, and the floating component 42 is a plate, the distribution can reduce the distance between the brake disc 9 and the motor base 6 of the tractor, and the phenomenon that the main shaft 8 of the tractor 1 is bent due to the dispersion of the stress of the shearing force is avoided; the distance between the brake disc 9 and the motor base 6 of the traction machine 1 is only the distance between the first brake piece 34 and the second brake piece 35 when the brake disc 9 is released, so that the braking load is reduced, and the control assembly 3 and the middle assembly 4 can adopt small-sized parts, thereby reducing the cost; the control assembly 3 is arranged on the outer side of the brake disc 9 instead of the radial direction of the brake disc 9, so that the overall structure is more compact, and the effect of saving space is achieved; the outer side of the brake disc 9 is the side of the brake disc 9 away from the motor base 6 of the traction machine, and the inner side of the brake disc 9 is the side of the brake disc 9 close to the motor base 6 of the traction machine.
As shown in fig. 6, the floating member 42 is provided with a fixing portion 421 and a connecting portion 422, the fixing portion 421 is disposed outside the braking position, i.e., outside the brake disc 9, and the distance between the brake disc 9 and the motor base 6 of the traction machine is shortened; one end of the fixing part 421 extends from the edge of the brake disc 9 to the inner side of the brake disc 9 to be connected with the floating part 42, and the other end is connected with the first control part 32; the fixing part 421 comprises a mounting bolt and an adjusting sleeve, the second control part 33 is provided with a through hole, the mounting bolt penetrates through the through hole to be connected with the first control part 34 and the fixing part 421, the adjusting sleeve is sleeved outside the mounting bolt, and the diameter of the through hole is larger than that of the mounting bolt, so that the mounting bolt can freely move in the through hole; when the brake disc 9 brakes, the distance between the fixing portion 421 and the braking position is greater than the distance between the first control element 32 and the second control element 33, so that the fixing portion 421 does not influence the movement of the floating element 42 when the brake disc 9 is released.
The connecting part 422 is provided with a movable hole; one end of the guide post 44 is fixed with the motor base 6 of the traction machine, and the other end is arranged in the movable hole in a penetrating way; the guiding post 44 is a screw, and the guiding post 44 plays a role of fixing and supporting.
The two ends of the adjusting piece 41 are respectively connected with the guide post 44 and the connecting part 422; the adjusting member 41 is positioned on one side of the floating member 42 close to the braking position, as shown in fig. 3, when braking, the adjusting member 41 is in a compressed energy storage state; when the first control element 32 is electrified, the first control element 32 and the second control element 33 are tightly attached, at this time, if the first control element 32 is not moved, the second control element 33 is close to the first control element 32, and the floating element 42 is not moved because the first control element 32 is not displaced; the adjustment member 41 releases the spring force to spring the floating member 42 open, so that the floating member 42 is moved away from the braking position and the brake disc 9 is released.
The middle dividing assembly 4 further comprises a limit screw, a thread corresponding to the limit screw is arranged on the floating piece 42, the limit screw penetrates through the floating piece 42, and a limit piece 43 is arranged on the limit screw on one side of the floating piece 42 away from the braking position; the floating piece 42 is continuously far away from the brake disc 9 by the elastic force of the adjusting piece 41, and when the moving distance of the floating piece 42 exceeds the travel range of the floating piece, the limiting piece 43 is abutted against the motor base 6 of the traction machine, so that the floating piece 42 is not far away from the brake disc 9 any more; by rotating the limit screw, the length of the limit piece 43 can be adjusted, and further the moving range of the floating piece 42 can be adjusted; in other embodiments, the position-limiting element 43 may be a bump, a cylinder or other shapes; in other embodiments, the position-limiting member 43 may be fixed on the floating member 42 by bonding, integral molding or other methods, but the fixing method of the position-limiting member 43 is not limited herein; in other embodiments, the limiting member 43 may be fixed to the motor base 6 of the traction machine.
When the first control member 32 is powered on, the first control member 32 and the second control member 33 are tightly attached, at this time, if the second control member 33 is not moved, the first control member 32 is close to the second control member 33, because the second control member 33 is not displaced, as shown in fig. 4, the first control member 32 drives the floating member 42 to move for a distance exceeding the stroke range of the floating member 42, the limiting member 43 abuts against the floating member 42 to limit the movement of the floating member 42, the first control member 32 connected with the floating member 42 is forced to stop moving, at this time, the second control member 33 moves, so that the connecting member 36 is far away from the braking position, and the first braking member 34 and the second braking member 35 are far away from the brake disc 9; in other embodiments, the adjustment element 41 can also be arranged on the side of the float element 42 remote from the braking position, the pull of the adjustment element 41 being used to move the float element 42 away from the brake disk 9.
Two adjusting pieces 41 are arranged, the two adjusting pieces 41 are symmetrically arranged at two ends of the floating piece 42, the two adjusting pieces 41 can ensure the balance of the floating piece 42 during moving, and the floating piece 42 is prevented from deviating; in other embodiments, the adjusting members 41 may be provided in one, three, four, five, or six, and the number of the adjusting members 41 is not limited in the present invention.
The number of the limiting parts 43 is four, and every two limiting parts 43 are arranged corresponding to one adjusting part 41, so that the limiting parts 43 can bear the elastic force of the adjusting parts 41 conveniently, and the moving balance degree of the floating part 42 is increased; in other embodiments, the position-limiting members 43 may be provided with one, two, three or five, and the number of the position-limiting members 43 is not limited in the present invention.
The inspection switch 5 is provided on the first control member 32; the control assembly 3 is combined, the first control element 32 and the second control element 33 are tightly attached, and the second control element 33 acts on the inspection switch 5; the check switch 5 is a microswitch, and the check switch 5 is used for detecting the braking state of the control assembly.
The embodiment also provides a traction machine 1, as shown in fig. 7-8, including a connection key 7, a main shaft 8, a main shaft cover 81, a disc brake and a brake disc 9, where the brake disc 9 is connected with the main shaft 8 through the connection key 7, the main shaft cover 81 is fixed on the end surface of the main shaft 8 and extends to the brake disc 9; fixing the brake disk 9 on the main shaft 8 through the connecting key 7 and the main shaft cover 81, thereby restricting the movement of the brake disk 9 in the axial direction of the main shaft 8; in other embodiments, the brake disk 9 may be fixed to the main shaft 8 by integral molding.
The brake disc 9 is fixed with the main shaft 8 of the traction machine 1, the brake disc 9 rotates along with the main shaft 8 of the traction machine 1 in the circumferential direction and is fixed in the axial direction, the moving uncertainty of the brake disc 9 can be reduced, the brake dragging operation is prevented, and the safety problem caused by the brake disc 9 being separated from the main shaft 8 of the traction machine 1 can be avoided; meanwhile, the distance between the brake disc 9 and the motor base 6 of the tractor is convenient to control, the bending of the main shaft 8 of the tractor 1 is avoided, and the service life of the brake is prolonged; the circumferential direction is the rotational direction of the main shaft 8 of the hoisting machine 1, and the axial direction is the axial direction of the main shaft 8 of the hoisting machine 1.
The above examples are not intended to be exhaustive list based on the present invention, and there may be many other embodiments other than those listed. Any alterations and modifications without departing from the spirit of the invention are within the scope of the invention.
Claims (6)
1. A disc brake comprising a brake mechanism, said brake mechanism comprising a control assembly and a central subassembly;
the center-dividing assembly comprises an adjusting piece and a floating piece; one end of the adjusting piece is fixed, and the other end of the adjusting piece is connected with the floating piece; the floating piece is connected with the control assembly; a gap exists between the control assembly and the floating member, and the gap is a braking position;
the control assembly is opened, the floating part is close to the braking position, and the adjusting part is compressed to store energy;
the control assembly is combined, the adjusting piece is released, and the floating piece is far away from the braking position;
the middle dividing assembly further comprises a limiting piece, and the limiting piece is positioned on one side of the floating piece away from the braking position;
the control assembly is arranged outside the braking position; the float member is disposed inboard of the braking position;
the control assembly comprises an elastic piece, a first control piece and a second control piece; the elastic piece is arranged between the first control piece and the second control piece; the floating piece is connected with the first control piece;
the floating piece is provided with a fixing part which is arranged on the outer side of the braking position;
the fixing part is connected with the first control part; when the control assembly is opened, the distance between the fixing part and the braking position is larger than the distance between the first control part and the second control part.
2. The disc brake of claim 1, further comprising an inspection switch provided on the first control member; when the control components are combined, the second control part acts on the inspection switch.
3. A disc brake according to any one of claims 1-2, characterized in that there are two adjusting members, and that the two adjusting members are arranged symmetrically.
4. A disc brake according to any one of claims 1-2, characterized in that there are two of the braking means.
5. A disc brake according to any one of claims 1-2, characterized in that the float member is provided with a coupling portion; the connecting part is provided with a movable hole; the midsplit assembly also comprises a guide post; one end of the guide post is fixed, and the other end of the guide post penetrates through the movable hole; the adjusting member is connected to the connecting portion and the guide post.
6. A traction machine, characterized by comprising a main shaft, a connecting key, a main shaft cover, a brake disc and the disc brake of any one of claims 1-5, wherein the brake disc is connected with the main shaft through the connecting key, and the main shaft cover is fixed on the end surface of the main shaft and extends to the brake disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210344542.5A CN114803923B (en) | 2022-03-31 | 2022-03-31 | Disc brake and traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210344542.5A CN114803923B (en) | 2022-03-31 | 2022-03-31 | Disc brake and traction machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114803923A CN114803923A (en) | 2022-07-29 |
| CN114803923B true CN114803923B (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210344542.5A Active CN114803923B (en) | 2022-03-31 | 2022-03-31 | Disc brake and traction machine |
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| Country | Link |
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| CN (1) | CN114803923B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433241Y (en) * | 2000-07-25 | 2001-06-06 | 赵宏年 | Relaxing device for brake of toothless traction machine |
| CN101003352A (en) * | 2006-01-20 | 2007-07-25 | 常熟市电梯曳引机厂有限公司 | Self float type electromagnetic brake |
| CN203187342U (en) * | 2013-03-15 | 2013-09-11 | 浙江西子富沃德电机有限公司 | Disc brake used for elevator traction machine |
| CN104860176A (en) * | 2014-02-21 | 2015-08-26 | 株式会社日立制作所 | Elevator And Traction Machine Thereof |
| CN107848761A (en) * | 2015-08-28 | 2018-03-27 | 株式会社日立制作所 | Elevator hoist and elevator |
| CN110831883A (en) * | 2017-05-24 | 2020-02-21 | 三菱电机株式会社 | Traction machine for elevator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2804749B2 (en) * | 1996-10-25 | 1998-09-30 | 三陽工業株式会社 | Brake for hoist |
| JP2016034872A (en) * | 2014-08-04 | 2016-03-17 | 株式会社日立製作所 | Hoist for elevator |
| JP6636470B2 (en) * | 2017-01-10 | 2020-01-29 | 株式会社日立製作所 | Hoists and elevators |
| CN213202002U (en) * | 2020-09-28 | 2021-05-14 | 苏州通润驱动设备股份有限公司 | Disc brake of traction machine |
-
2022
- 2022-03-31 CN CN202210344542.5A patent/CN114803923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433241Y (en) * | 2000-07-25 | 2001-06-06 | 赵宏年 | Relaxing device for brake of toothless traction machine |
| CN101003352A (en) * | 2006-01-20 | 2007-07-25 | 常熟市电梯曳引机厂有限公司 | Self float type electromagnetic brake |
| CN203187342U (en) * | 2013-03-15 | 2013-09-11 | 浙江西子富沃德电机有限公司 | Disc brake used for elevator traction machine |
| CN104860176A (en) * | 2014-02-21 | 2015-08-26 | 株式会社日立制作所 | Elevator And Traction Machine Thereof |
| CN107848761A (en) * | 2015-08-28 | 2018-03-27 | 株式会社日立制作所 | Elevator hoist and elevator |
| CN110831883A (en) * | 2017-05-24 | 2020-02-21 | 三菱电机株式会社 | Traction machine for elevator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114803923A (en) | 2022-07-29 |
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