CN113023610B - Elevator double braking device and elevator braking device double updating method - Google Patents
Elevator double braking device and elevator braking device double updating method Download PDFInfo
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- CN113023610B CN113023610B CN202011446625.2A CN202011446625A CN113023610B CN 113023610 B CN113023610 B CN 113023610B CN 202011446625 A CN202011446625 A CN 202011446625A CN 113023610 B CN113023610 B CN 113023610B
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- brake
- brake arm
- arms
- operating part
- arm operating
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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
- B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
- B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
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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
A brake device for an elevator and a method for updating the brake device for an elevator, which can simply double the brake device by adding a small number of new components without requiring troublesome braking force adjustment work. An elevator braking device according to an embodiment of the present invention includes: a pair of brake arms (12 a, 12 b) that sandwich the brake drum (11) from the left and right and press the brake shoes (13 a, 13 b) against the outer peripheral surface of the brake drum (11); a pair of extension brake arms (30A, 30B) respectively connected to the front ends of the brake arms (12 a, 12B); a 1 st brake arm operation unit (15A) that drives one of the brake arms (12 a, 12 b); and a 2 nd brake arm operating part (15B) for driving the other brake arm between the extension brake arms (30A, 30B).
Description
Technical Field
An embodiment of the invention relates to a double-braking device of an elevator and a double-updating method of the braking device.
Background
The hoisting machine of the elevator is provided with a braking device for braking the main sheave. Such a brake device generates a braking force by sandwiching a brake drum with brake arms having brake shoes. The brake shoe is pressed against the brake drum by the elastic force of a spring for generating braking force, and generates braking force by frictional force. During operation of the elevator, when the car travels, the brake arm operating part driven by the electromagnetic coil pushes the brake arm open with a force exceeding the biasing force of the spring for generating the braking force, and the braking is released. The conventional brake device generally includes 1 brake arm operating unit. As a conventional technique of such a brake device, for example, there is a technique described in patent document 1.
However, in an elevator which operates for a long time, old mechanical equipment is sometimes replaced with the latest equipment, and in order to adapt to newly revised safety standards, the elevator is sometimes updated or repaired. In such elevator modernization, a double operation of the braking device of the hoisting machine may be performed. The doubling of the brake device as referred to herein means: 1 brake arm operation part is added to be 2, and a power supply system of each brake arm operation part is formed into 2 independent systems. Since the respective brake arm operating units operate independently by doubling the brake device, it is possible to increase the braking force while ensuring safe braking operation even if one of the brake arm operating units fails.
Patent document 1: japanese patent laid-open publication No. 2011-63434
However, in the doubling of the conventional brake device, the conventional brake drum is directly used. On the other hand, a brake shoe generating a frictional force, a brake arm to which the brake shoe is attached, and a doubled brake arm operating unit are collectively replaced with a new system. In the case of doubling up the brake drum, the existing brake drum and the new brake shoe material are not used in the past, and therefore, a problem of contact with the brake drum is different.
That is, it is impossible to grasp how much the contact area of the new type brake shoe with respect to the brake drum is increased or decreased from that of the brake shoe before the doubling. Therefore, in order to determine whether the braking performance of the brake device is good, it is necessary to adjust the contact state of the new brake shoe while repeating the braking performance test. In the doubling of the conventional brake device, a very troublesome work such as an adjustment work of the abutting state of the brake shoe is involved.
Disclosure of Invention
The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a double braking device for an elevator and a double updating method for a braking device, which can easily double the braking device by adding a small number of new components without requiring a troublesome adjustment work.
In order to achieve the above object, a brake apparatus for an elevator according to an embodiment of the present invention is a brake apparatus for an elevator, which generates a braking force by a frictional force by pressing a brake shoe against a brake drum connected to a motor rotating shaft of a hoisting machine, the brake apparatus including:
a pair of brake arms that sandwich the brake drum from left and right and press the brake shoe against an outer peripheral surface of the brake drum;
a pair of extension brake arms respectively connected to the front ends of the brake arms;
a first brake arm operating unit 1 for driving one of the brake arms; and
and a 2 nd brake arm operating part for driving the other brake arm between the extension brake arms.
Drawings
Fig. 1 is a front view showing a double braking device for an elevator according to embodiment 1 of the present invention.
Fig. 2 is a front view showing an existing brake apparatus before doubling.
Fig. 3A and 3B are diagrams showing a structure of an existing brake arm operating unit, fig. 3A is an exploded perspective view, and fig. 3B is a side view.
Fig. 4A, 4B, 4C, and 4D are views showing sequential addition of modification steps from an existing brake device to a doubled brake device, where fig. 4A shows a state before an existing brake arm is connected to an extended brake arm, fig. 4B shows a state after the left brake arm is connected to the extended brake arm, fig. 4C shows a state after the right brake arm is connected to the extended brake arm and the brake arm is renewed, and fig. 4D shows a state after the newly added brake arm operating portion, the spring lever, and the extended brake arm after the installation of the braking force generating spring are completed.
Fig. 5 is a perspective view showing a joint portion of the extension brake arm.
Fig. 6A and 6B are views showing a tool used in manual release of the brake, fig. 6A being a front view and fig. 6B being a side view.
Fig. 7 is a front view showing a double braking device for an elevator according to embodiment 2 of the present invention.
Detailed Description
Hereinafter, an embodiment of a double braking device for an elevator and a double updating method for a braking device according to the present invention will be described with reference to the drawings.
(embodiment 1)
Fig. 1 is a diagram showing a double braking device for an elevator according to embodiment 1 of the present invention. This double brake device is a device in which, when an elevator is updated, the existing brake device of a hoisting machine shown in fig. 2 is converted into a double brake system in which 1 brake arm operation unit is added.
Therefore, first, the conventional brake device 8 which is not doubled will be described with reference to fig. 2.
In fig. 2, reference numeral 11 shows an existing brake drum. Brake arms 12a, 12b are provided on both sides of the brake drum 11. Brake shoes 13a and 13b are held by the brake arms 12a and 12b. A spring lever 18 is attached to the brake arms 12a and 12b at a right angle, and a braking force generating spring 19 is provided at one end of the spring lever 18. The base ends of the brake arms 12a, 12b are pivotally supported by the shafts 14a, 14b. When a braking force is generated, the brake shoes 13a and 13b are pressed against the brake drum 11 by the elastic force of the braking force generation spring 19.
Next, in fig. 2, reference numeral 15A is a brake arm operating portion for releasing the brake device 8. Fig. 3A and 3B are diagrams illustrating the structure of the brake arm operating portion 15A.
In the brake arm operating portion 15A, a pair of left and right operating levers 16a, 16b are driven by solenoids. One end portions of the operation levers 16a and 16b are rotatably supported by both side support portions 23a and 23b provided in the brake arm operating portion 15A, and the other end portions of the operation levers 16a and 16b are coupled to the driving portion of the brake arm operating portion 15A via the coupling portion 21.
When the brake arm operating portion 15A pushes the operating levers 16a, 16b apart, the gap adjusting bolts 17a, 17b come into contact with the bolt receiving portions 22a, 22b of the operating levers 16a, 16b, and therefore the brake arms 12a, 12b are expanded left and right, and the brake device 8 can be released. When adjusting the gap between the brake shoes 13a and 13b and the brake drum 11, the gap can be adjusted by fixing the positions of the threaded gap adjusting bolts 17a and 17b to appropriate positions by the locknuts 39.
Next, a description will be given of the brake device 10 shown in fig. 1, which is doubled by modifying the existing brake device 8 as described above. In fig. 1, the same reference numerals as in fig. 2 are given to the components of the conventional brake device 8 in fig. 2.
In this embodiment, the brake drum 11, the brake shoes 13a, 13b, the brake arms 12a, 12b, the spring lever 18, the braking force generation spring 19, and the brake arm operating portion 15A are directly applied to existing components. In the modification to double the brake arms, the extension brake arms 30A and 30B for extending the existing brake arms 12a and 12B, the spring lever 24, the braking force generation spring 19, and the brake arm operating unit 15B are added as the constituent elements. The operating levers 20a and 20B of the brake arm operating unit 15B are pivotally supported by the support portions 26a and 26B, and are of the same type as the existing brake arm operating unit 15A.
When the braking force is generated, the brake shoes 13a and 13b are pressed against the brake drum 11 by the elastic force of the 2 braking force generation springs 19 and 25. This doubling enhances the braking force as compared with the existing single structure (only the brake arm operating portion 15A).
When the electromagnetic coil of the existing brake arm operating unit 15A is excited when the braking force is released, the one of the operating levers 16a pushes the left brake arm 12a open via the gap adjustment bolt 17a, and the brake shoe 13a is separated from the brake drum 11. The electromagnetic coil of the additional brake arm operating portion 15B is also excited, and the other operating lever 20B pushes the right extension brake arm 30B and the brake arm 12B apart via the gap adjustment bolt 17B, and separates the brake shoe 13B from the brake drum 11.
Here, fig. 4A, 4B, 4C, and 4D are diagrams illustrating additional modification steps in order from the existing brake device 8 to the double brake device 10. Fig. 4A shows a state before the extension brake arms 30A and 30B are connected to the existing brake arms 12a and 12B, and fig. 4B shows a state after the extension brake arm 30A is connected to the left brake arm 12 a. Fig. 4C shows a state in which the extended brake arm 30B is connected to the right brake arm 12B and the brake arm is renewed. Fig. 4D shows the extended brake arms 30A and 30B after the newly added brake arm operating portion 15B, the spring lever 24, and the braking force generation spring 25 are mounted.
First, in fig. 4A, the existing gap adjustment bolt 17a (see fig. 2) is removed from the left brake arm 12b. At this time, the other gap adjustment bolt 17b remains in the attached state. Next, as shown in fig. 4B, the extended brake arm 30A is attached to the distal end portion of the brake arm 12B from which the gap adjustment bolt 17a is removed.
Here, fig. 5 is a perspective view showing a joint portion of the extension brake arm 30A.
A hole 31 through which the gap adjustment bolt 17a passes is formed in the joint portion of the extension brake arm 30A. At this time, the extension brake arm 30A is attached so that a gap adjustment bolt hole (not shown) at the tip end portion of the brake arm 12B coincides with the hole 31 of the extension brake arm 30B. Then, the rotation stopping and fixing member 32 is attached, and a screw, not shown, is screwed into the screw hole 34 from the through hole 35 and fixed. The extended brake arm 30A is fixed by being remounted while adjusting the position of the detached gap adjustment bolt 17 a. At this time, the installation position of the gap adjustment bolt 17a may be adjusted so as to be operated in synchronization with the gap adjustment bolt 17b on the side of the remaining brake arm 12b, that is, so as to abut against the operating levers 16a and 16b at the same time.
Then, similarly, the extension brake arm 30B is also connected to the other brake arm 12B. The operation at this time is not particularly changed from the first setting of the extension brake arm 30A. Since the gap adjustment bolt 17b is not necessary, when the extended brake arm 30A is fixed after the removal thereof, the bolt is fixed using a bolt having a short bolt shaft length (length of a shaft other than the head of the bolt), not shown. This bolt is for preventing interference with the operating lever 16b of the brake arm operating portion 15A.
After the left and right extension brake arms 30A and 30B are connected, as shown in fig. 4D, the mounting seats 36a and 36B are disposed on the support portions, not shown, and the newly added brake arm operating portion 15B is fixed to the mounting seats 36a and 36B. As the additional brake arm operating portion 15B, it is preferable to use the same product having the same specification as the existing brake arm operating portion 15A.
Next, in fig. 4D, the additional spring lever 24 and the braking force generation spring 25 are attached to the extension brake arms 30A, 30B. In this case, holes through which the spring rods 24 pass are formed in advance in the extension brake arms 30A and 30B. The additional spring lever 24 and the braking force generation spring 25 are members having the same specifications as those of the existing spring lever 18 and the braking force generation spring 19. Finally, the gap adjustment bolt 17B is attached to the distal end portion of the extended brake arm 30A, and the extension of the brake arm operating portion 15B is completed.
The braking force is adjusted for the added braking function of the brake. In the case of the present embodiment, the adjustment of the elastic force of the additional braking force generation spring 25 is performed by tightening or loosening the nuts 37 and 38. The adjustment of the gap between the brake drum 11 and the brake shoes 13a and 13b can be adjusted by rotating the gap adjustment bolt 17b. On the other hand, the brake function performed by the existing brake arm operating unit 15A and the braking force generation spring 19 is adjusted before updating, and therefore, adjustment work is not required.
By adding a few components such as the extended brake arms 30A and 30B, the brake arm operating portion 15B, the spring lever 24, and the braking force generating spring 25 to the existing brake system in this way, the double brake system can be realized. As compared with the conventional case where the brake arm operating unit is replaced with a new set of components, it is not necessary to perform work items such as running-in of the abutment condition between the brake drum 11 and the brake shoes 13a and 13b, braking force tests, and the like, and all work can be completed only by adjustment confirmation of the degree of the mounting and maintenance work of a few components.
Next, the power supply of the doubled brake apparatus 10 is supplemented.
In the case of doubling up the number of brake arm operating units 15A and 15B, 2 identical brake arm operating units are arranged in parallel. When the power supply line is branched and the brake arm operating units 15A and 15B are connected in parallel, both the brake arm operating units 15A and 15B can be operated simultaneously without considering the power supply regulation when the brake is released.
Further, it is preferable to add an off circuit to the power supply line of each of the brake arm operating units 15A and 15B in the control device of the elevator. This allows one of the brake arm operating units 15A and 15B to be arbitrarily operated. When functional soundness of braking is confirmed, it is sometimes necessary to confirm braking performance and braking force at the time of one braking (only one braking device is operated), but if the above-described open circuit is present, one braking operation by electric operation based on actual operation can be performed, and maintenance such as checking braking force can be automatically performed by programmed steps.
The brake release by the electric driving has been described above, but the brake release by the manual driving using a tool may be used as described below.
In maintenance and inspection of an elevator, an operation of manually releasing a brake of a hoisting machine may be performed. Fig. 6A and 6B are views showing a tool used for manual release of the brake, fig. 6A being a front view and fig. 6B being a side view.
The release tool is a tool including a lever 40 and a hook 41 provided at the front end thereof. The hooking portion 41 is detachably engaged with the connection portion of the operating levers 20a and 20B of the additional brake arm operating portion 15B. As shown in fig. 6B, the release tool can release the brake by pushing the operating levers 20a and 20B apart by applying the principle of a lever. In fig. 1, when an actual release operation is performed, a gap adjustment bolt similar to the gap adjustment bolt 17B is attached to the extension stopper arm 30B in advance.
By using such a release tool, the extended brake arms 30A and 30B are pushed open by manually operating the additional brake arm operating unit 15A, whereby the brake can be released without operating the existing brake arm operating unit 15A. After the manual release operation is completed, the gap adjustment bolt attached to the extension brake arm 30B is detached.
The release tool as described above is a tool used also in the existing brake arm operating portion 15A. If the same brake arm operating portion 15B is added to the existing brake arm operating portion 15A as in the present embodiment, the release tool used in the existing brake arm operating portion 15A can be used as it is.
(embodiment 2)
Next, a description will be given of a double braking device for an elevator according to embodiment 2 of the present invention with reference to fig. 7.
Embodiment 2 is an embodiment in which an operation detector is provided to monitor whether or not the brake device 10 is operating normally during a brake release operation. Since the main body of the brake device 10 is the same as that of embodiment 1 of fig. 1, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in fig. 7, detectors 44a and 44b using, for example, micro switches for detecting whether or not the brake arms 12a and 12b have been displaced to the normal operation positions for brake release are provided. At the time of brake release, the brake arms 12a and 12b that have pressed the brake shoes 13a and 13b against the brake drum 11 are opened and the detectors 44a and 44b are turned on, so that it is possible to detect that a normal brake release operation is performed.
According to embodiment 2 described above, when the existing brake arm operating unit 15A and the additional brake arm operating unit 15B independently operate the brake arms 12a and 12B, it is possible to confirm that the normal operation has been performed by the signals from the detectors 44a and 44B and to release the brake. Further, the operating states of the doubled left and right brake mechanisms can be independently monitored, and the requirements of safety standards can be satisfied. For example, even when a so-called drag phenomenon (a state in which the brake shoes are held in contact with the drum) occurs in which one of the brake arms 12a and 12b is not normally opened, it is possible to grasp that a drag has occurred by obtaining the detection signal from only one of the detectors 44a and 44b.
The double braking device for an elevator of the present invention has been described above by way of preferred embodiments, but the above embodiments are merely examples and are not intended to limit the scope of the invention. It is to be understood that the novel devices, methods and systems described in the specification can be implemented in various forms, and various omissions, substitutions and changes can be made therein without departing from the spirit of the invention. The scope of the technical solution and its equivalents is intended to cover the embodiments or modifications thereof within the spirit of the invention.
Claims (4)
1. A brake device for an elevator, which generates a braking force by a frictional force by pressing a brake shoe against a brake drum connected to a motor rotating shaft of a hoisting machine,
the disclosed device is provided with:
a pair of brake arms that sandwich the brake drum from left and right and press the brake shoe against an outer peripheral surface of the brake drum;
a pair of extension brake arms respectively connected to the front ends of the brake arms;
a first brake arm operating unit 1 for driving one of the brake arms; and
a 2 nd brake arm operating part for driving the other brake arm between the extension brake arms,
the brake arm and the 1 st brake arm operating part are members of a single conventional brake device in which an operating part for driving the brake arm is operated, the extended brake arm and the 2 nd brake arm operating part are newly added for doubling up braking,
the 1 st brake arm operating part and the 2 nd brake arm operating part are connected in parallel to a power supply, and the double brake device for an elevator has a disconnection circuit for disconnecting one of the 1 st brake arm operating part and the 2 nd brake arm operating part from the power supply.
2. The double brake device for an elevator according to claim 1,
a pair of detectors are provided for detecting normal brake release operations of the pair of brake arms, respectively.
3. The double brake device for an elevator according to claim 1,
the 1 st brake arm operating part and the 2 nd brake arm operating part are members of the same specification.
4. A method of double-renewing a brake device of an elevator, which is a method of double-renewing a brake device of a double-renewing brake device according to claim 1 by modifying an existing brake device,
the brake arm and the 1 st brake arm operating part directly follow the components of the existing brake device, the extension brake arm and the 2 nd brake arm operating part use newly added components,
a pair of the extended brake arms are respectively connected to the front end portions of the pair of the brake arms, and the first brake arm operating portion 1 is adjusted so as to drive one of the brake arms,
the 2 nd brake arm operating part for driving the other brake arm is additionally arranged between the extension brake arms.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019222409A JP6937353B2 (en) | 2019-12-09 | 2019-12-09 | Elevator dual brake device and double brake device renewal method |
| JP2019-222409 | 2019-12-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113023610A CN113023610A (en) | 2021-06-25 |
| CN113023610B true CN113023610B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011446625.2A Active CN113023610B (en) | 2019-12-09 | 2020-12-09 | Elevator double braking device and elevator braking device double updating method |
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| JP (1) | JP6937353B2 (en) |
| CN (1) | CN113023610B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05193858A (en) * | 1991-10-02 | 1993-08-03 | Inventio Ag | Device to detect and inform performance and condition of safety brake of elevator |
| CN1108612A (en) * | 1993-06-08 | 1995-09-20 | 科思股份公司 | Procedure and apparatus for triggering the safety gear of an elevator |
| US5565660A (en) * | 1994-01-05 | 1996-10-15 | Kone Oy | Apparatus in the overspeed governor of an elevator |
| CN202296647U (en) * | 2011-10-25 | 2012-07-04 | 浙江怡达快速电梯有限公司 | Ward off rope device with double action of lift car top wheel |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5419469U (en) * | 1977-07-12 | 1979-02-07 | ||
| FR2736722B1 (en) * | 1995-07-12 | 1997-08-29 | Otis Elevator Co | OPTICAL FORK DEVICE FOR SPEED MEASUREMENT, ESPECIALLY OF AN ELEVATOR CAB |
| JP3614221B2 (en) * | 1995-10-31 | 2005-01-26 | 三菱電機株式会社 | Brake device for elevator hoisting machine |
| JP2006166362A (en) * | 2004-12-10 | 2006-06-22 | Sony Corp | Acoustic system |
| JP5189027B2 (en) * | 2009-04-28 | 2013-04-24 | 株式会社日立製作所 | Elevator braking device and elevator device |
| JP2011063434A (en) * | 2009-09-18 | 2011-03-31 | Toshiba Elevator Co Ltd | Brake device for elevator hoisting machine, and method for adjusting the same |
| JP5429808B2 (en) * | 2010-01-29 | 2014-02-26 | 東芝エレベータ株式会社 | Elevator hoisting machine brake |
| CN205151436U (en) * | 2015-11-26 | 2016-04-13 | 上海乐天电梯部件有限公司 | Overspeed governor |
| JP6520790B2 (en) * | 2016-03-29 | 2019-05-29 | 三菱電機ビルテクノサービス株式会社 | Brake device |
| CN108263980B (en) * | 2017-12-14 | 2023-11-14 | 浙江理工大学 | Elevator brake adopting double brake system and braking method thereof |
-
2019
- 2019-12-09 JP JP2019222409A patent/JP6937353B2/en active Active
-
2020
- 2020-12-09 CN CN202011446625.2A patent/CN113023610B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05193858A (en) * | 1991-10-02 | 1993-08-03 | Inventio Ag | Device to detect and inform performance and condition of safety brake of elevator |
| CN1108612A (en) * | 1993-06-08 | 1995-09-20 | 科思股份公司 | Procedure and apparatus for triggering the safety gear of an elevator |
| US5565660A (en) * | 1994-01-05 | 1996-10-15 | Kone Oy | Apparatus in the overspeed governor of an elevator |
| CN202296647U (en) * | 2011-10-25 | 2012-07-04 | 浙江怡达快速电梯有限公司 | Ward off rope device with double action of lift car top wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6937353B2 (en) | 2021-09-22 |
| CN113023610A (en) | 2021-06-25 |
| JP2021091520A (en) | 2021-06-17 |
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