CN110719881B - Scaffold for maintenance of car door device - Google Patents
Scaffold for maintenance of car door device Download PDFInfo
- Publication number
- CN110719881B CN110719881B CN201780091649.0A CN201780091649A CN110719881B CN 110719881 B CN110719881 B CN 110719881B CN 201780091649 A CN201780091649 A CN 201780091649A CN 110719881 B CN110719881 B CN 110719881B
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- CN
- China
- Prior art keywords
- scaffold
- car door
- beam portion
- door beam
- posture
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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
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/30—Constructional features of doors or gates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
Abstract
A maintenance scaffold for a car door device is provided with: a scaffold body having a scaffold face; and a car door beam section that supports the scaffold body, the scaffold body being housed in the car door beam section in a 1 st attitude in which the scaffold body does not protrude from the car door beam section toward the inside of the hoistway in a plan view when not in use, the scaffold body being supported by the car door beam section in a 2 nd attitude in which the scaffold body protrudes from the car door beam section toward the inside of the hoistway in a plan view when in use, and the scaffold surface being parallel to an upper surface of the car door beam section when the scaffold body is supported by the car door beam section in the 2 nd attitude.
Description
Technical Field
The present invention relates to a maintenance scaffold of a car door device which serves as a scaffold for a maintenance worker during maintenance and inspection of an elevator.
Background
Each device disposed on the door pocket side of the landing door device of an elevator generally requires regular maintenance and inspection. In general, maintenance and inspection work for the equipment is performed in a state where a maintenance worker is placed on the upper portion of the car room. However, in a large-capacity elevator such as a freight elevator, since the distance from the car room to the door pocket side of the landing door device is long, an unnatural posture is forced to be adopted, and the operation efficiency is poor.
Conventionally, as a scaffold for maintenance of an elevator, the following scaffold is known: a scaffold is formed of a base body having a groove-shaped cross section spanning the joints of plates and a hook portion on the upper end side for hooking a protrusion of a fastener to be joined to each other, and a step provided on the opposite side of the hook portion of the base body, and is temporarily installed on a wall surface of a car room (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 5-193875
Disclosure of Invention
Problems to be solved by the invention
However, in this elevator maintenance scaffold, when a space between a wall of the car room and a wall surface of the hoistway is narrow and the ladder cannot be advanced, the scaffold is attached to the wall surface of the car room to perform maintenance inspection of the vicinity of the car room. Therefore, in an elevator apparatus in which the distance from the car room to the wall surface of the hoistway is long, it is not suitable when performing maintenance inspection of equipment installed on the wall surface of the hoistway.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a maintenance scaffold for a car door device of an elevator, which can improve workability by enabling a maintenance inspection operation without forcing an unreasonable posture to be performed when performing a maintenance inspection operation of equipment disposed on a door pocket side of a landing door in each floor portion of a hoistway.
Means for solving the problems
The scaffold for maintenance of an elevator of the present invention comprises: a scaffold body having a scaffold face; and a car door beam section that supports the scaffold body, the scaffold body being housed in the car door beam section in a 1 st attitude in which the scaffold body does not protrude from the car door beam section toward the center side of the hoistway in plan view when not in use, and being supported by the car door beam section in a 2 nd attitude in which the scaffold body protrudes from the car door beam section toward the center side of the hoistway in plan view when in use, the scaffold surface being parallel to the upper surface of the car door beam section when the scaffold body is supported by the car door beam section in the 2 nd attitude.
Effects of the invention
The present invention can provide a scaffold for maintenance, which is provided with the following scaffold body in a car door device: the scaffold body is stored at a position where the scaffold body does not interfere with surrounding equipment when not in use, and can be used as a scaffold when in use only by changing the posture, so that the scaffold body can be stored without interfering with the lifting and lowering movement of the car during the normal operation of the elevator, and the scaffold can be formed only by changing the posture during maintenance work. Thus, during maintenance work, a maintenance worker can easily access equipment in the hoistway on the side surface of the car or in front of the side surface of the car without taking a scaffold such as a ladder into the hoistway.
Drawings
Fig. 1 is a schematic view showing an elevator apparatus provided with a maintenance scaffold of a car door apparatus according to embodiment 1 of the present invention.
Fig. 2 is a partial perspective view showing a car door beam portion of a maintenance scaffold of a car door apparatus according to embodiment 1.
Fig. 3 is a view showing a 1 st modification of a maintenance scaffold of a car door device according to embodiment 1.
Fig. 4 is a view showing a 2 nd modification of a maintenance scaffold of a car door device according to embodiment 1.
Fig. 5 is a view showing a 3 rd modification of a maintenance scaffold of a car door device according to embodiment 1.
Fig. 6 is a partial perspective view showing a car door beam portion of a maintenance scaffold of a car door device according to embodiment 2.
Detailed Description
Fig. 1 is a schematic diagram showing an elevator apparatus 100 provided with a car door apparatus 60 according to embodiment 1. Fig. 2 is a partial perspective view showing a car door beam portion of a maintenance scaffold of a car door device.
As shown in fig. 1, in the elevator apparatus, a car room 10 is mounted on one end of a main rope, not shown, in a hoistway 20, and a counterweight 40 is mounted on the other end. A car door device 60 for opening and closing a door of the car room 10 is mounted on an upper portion of the car room 10 on the doorway side.
The car room 10 is guided in the vertical direction by a guide rail 30, and the guide rail 30 extends in the vertical direction along the hoistway 20. The counterweight 40 is vertically guided by a counterweight guide rail 31, the counterweight guide rail 31 is attached to a counterweight bracket 50 so as to extend in the vertical direction, and a plurality of counterweight brackets 50 are attached to the wall surface 20a of the hoistway 20 at intervals in the vertical direction. The car room 10 and the counterweight 40 are raised and lowered in the hoistway 20 by rotation of a drive sheave, not shown, that is wound around a main rope.
At a position a on the door pocket side of the car door beam portion 70 extending in the horizontal direction of the car door apparatus 60, a scaffold frame body 80 for maintenance and a support means for supporting the scaffold frame body 80 are provided. The maintenance worker performs maintenance inspection of a portion P shown in fig. 1 using the scaffold body 80 as a scaffold.
As shown in fig. 2 (a) to (d), the scaffold body 80 is formed to include: a 1 st panel 80A having a scaffold face S; and a 2 nd plate 80B that is provided on one end side of the 1 st plate 80A and extends perpendicularly to the 1 st plate 80A on the back side of the scaffold surface S.
The car door beam portion 70 is formed of a steel material having an L-shaped cross section, and a slit 70A is formed to penetrate the car door beam portion 70. Further, a support member 90 is disposed on a surface of the car door beam portion 70 opposite to the car room 10, and the support member 90 engages with the scaffold body 80 to support the scaffold body 80. The support member 90 is an iron member having a hat-shaped cross section in the longitudinal direction, and is fixedly attached to the car door beam portion 70 by welding or the like.
During normal operation of the elevator apparatus 100, as shown in fig. 2 (a), the scaffold body 80 is housed in the car door beam portion 70 in the 1 st posture in which it does not protrude from the car door beam portion 70 to the inside of the hoistway 20. On the other hand, when performing maintenance inspection of the elevator, as shown in fig. 2 (d), the scaffold body 80 is supported by the car door beam portion 70 in the 2 nd posture protruding from the car door beam portion 70 toward the inside of the hoistway 20 when the hoistway 20 is viewed from above.
Here, the procedure of changing the scaffold body 80 from the 1 st posture to the 2 nd posture will be described with reference to fig. 2 (a) to (d).
Fig. 2 (a) shows the 1 st posture of the scaffold body 80. In the 1 st posture, the 1 st plate 80A of the scaffold body 80 is inserted into the slit 70A of the car door beam portion 70 and engaged with the support member 90. First, from this state, the scaffold body 80 is pulled upward.
Next, as shown by the arrow in fig. 2 (b), the posture of the scaffold 80 is changed by 90 °, as shown in fig. 2 (c), so that the scaffold surface S is parallel to the upper surface of the car door beam portion 70. Next, the 2 nd plate 80B of the scaffold body 80 is inserted into the slit 70A. Then, as shown in fig. 2 (d), the 2 nd plate 80B of the scaffold body 80 is engaged with the support member 90. As described above, the scaffold body 80 is changed from the 1 st posture to the 2 nd posture.
As described above, the maintenance scaffold 60 of the car door device according to embodiment 1 includes the scaffold body 80, and the scaffold body 80 includes: a 1 st plate 80A having a scaffold surface S; and a 2 nd plate 80B perpendicular to the 1 st plate 80A. The car door apparatus 60 further includes a car door beam portion 70, and the car door beam portion 70 includes: a slot 70A into which the 1 st or 2 nd plate 80A or 80B of the scaffold body 80 is inserted; and a support member 90 that engages with the inserted 1 st plate 80A or 2 nd plate 80B. During normal operation of the elevator apparatus 100, the scaffold body 80 assumes the 1 st posture in which the 1 st plate 80A is inserted into the slit 70A and the 2 nd plate 80B is disposed above the car door beam portion 70. When the elevator apparatus 100 is subjected to maintenance inspection, the scaffold body 80 is pulled out from the car door beam portion 70, and the 2 nd plate 80B is inserted into the slit 70A, and the 1 st plate 80A protrudes from the car door beam portion 70 to the inside of the hoistway 20 in the 2 nd posture.
Thus, according to the maintenance scaffold 60 of the car door device according to embodiment 1, since the scaffold body 80 is housed in the car door beam portion 70 during normal operation of the elevator device 100, interference does not occur when the car room 10 travels in the hoistway 20. In the maintenance inspection of the elevator apparatus 100, the car door beam portion 70 can be formed with a scaffold such as a ladder by using the scaffold frame body 80 housed in the car door beam portion 70 without taking the scaffold into the hoistway 20. Therefore, even when the location where maintenance inspection is performed is far from the car room 10, the maintenance worker can perform maintenance inspection without being forced to assume an unreasonable posture by using the scaffold body 80 attached to the car door beam portion 70 as a scaffold, and workability is improved.
Further, in embodiment 1, the slit 70A is formed in the surface of the car door beam portion 70, but as in the first modification 1 shown in fig. 3 (a) to (d), a cutout portion 70B may be formed in the car door beam portion 70, and the slit 70A may be formed inside the cutout portion 70B. In this case, as shown in fig. 3 (d), when the scaffold body 80 is in the 2 nd posture, the scaffold surface S is flush with the upper surface of the car door beam portion 70, whereby a scaffold having no step from the car door beam portion 70 to the scaffold surface S can be formed, and workability is further improved.
In embodiment 1, the scaffold body 80 is supported by the support member 90 fixedly attached to the car door beam portion 70, but the method of supporting the scaffold body 80 is not limited to this. For example, as in the scaffold body 81 of the 2 nd modification shown in fig. 4 (a) to (d), a 3 rd panel 81C parallel to the 2 nd panel 81B is formed between the 1 st panel 81A and the 2 nd panel 81B, and the scaffold body 81 may be supported by sandwiching the car door beam portion 70 between the 2 nd panel 81B and the 3 rd panel 81C. In this case, the support member 90 is not necessary, and the number of components can be reduced. Further, since the car door beam portion 70 on the side opposite to the car room 10 does not need to be fixed with the support member 90 in advance, the car door device 60 of the conventional elevator device can be mounted only by forming the slit 70A in the car door beam portion 70.
As in modification 3 shown in fig. 5 (a) to (d), the car door beam portion 70 may be formed with a cutout portion 70B similar to that of modification 1, and a slit 70A may be formed inside the cutout portion 70B. In this case, as shown in fig. 5 (d), when the scaffold body 81 is in the 2 nd posture, the scaffold surface S is flush with the upper surface of the car door beam portion 70, whereby a scaffold having no step from the car door beam portion 70 to the scaffold surface S can be formed, and workability is further improved.
In the drawings showing the scaffold body 80 of embodiment 1 and the scaffold body 81 of the 2 nd and 3 rd modifications, the surface of the scaffold surface S is a flat surface, but the surface shape of the scaffold surface S is not limited to this. For example, the surface of the scaffold surface S may be formed with irregularities, and anti-slip processing may be performed using rubber or the like. This enables the maintenance worker to perform work in a stable posture, thereby further improving the workability.
In embodiment 1, the shape of the scaffold surface S is a rectangle, but the shape of the scaffold surface S is not limited to this. For example, corners of the scaffold surface S may be chamfered, an end of the scaffold surface S on a side protruding from the car door beam portion 70 may be formed in an arc shape, and the entire scaffold surface S may be formed in a semicircular shape. This can prevent the shoe of the maintenance worker from hooking the corner of the scaffold surface S, and further improve the workability. The area and shape of the scaffold surface S may be appropriately set according to the specifications of the hoistway 20 of the installed elevator apparatus.
Embodiment 2.
Fig. 6 (a) and (b) are views showing the car door beam portion 70 of the maintenance scaffold 60 of the car door apparatus according to embodiment 2 of the present invention. The scaffold 60 for maintenance of a car door device according to embodiment 2 is different from that according to embodiment 1 in the posture changing mechanism of the scaffold body 82 and the specification of the car door beam portion 70. The other structure is the same as embodiment 1.
As shown in fig. 6 (a), the scaffold body 82 according to embodiment 2 has a shape in which one end side of a rectangular plate material is formed in a semicircular shape. One end side of the scaffold body 82 is rotatably fixed to the car door beam portion 70 by a pin 91, and the other end side of the scaffold body 82 is rotatably movable about the pin 91.
Fig. 6 (a) is a view showing the 1 st posture of the scaffold body 82. In the 1 st posture, the scaffold body 82 is housed in a state of being superimposed on the car door beam portion 70, and does not protrude from the car door beam portion 70 to the inside of the hoistway 20.
Fig. 6 (b) is a view showing the 2 nd posture of the scaffold body 82. From the 1 st posture shown in fig. 6 (a), the other end side of the scaffold body 82 is rotated by about 90 ° toward the inside of the hoistway 20, whereby the scaffold body 82 takes the 2 nd posture shown in fig. 6 (b). A stopper 92 formed of an iron member, for example, is welded to the car door beam portion 70, and rotation of the scaffold body 82 exceeding 90 ° is suppressed by the stopper 92.
As described above, according to the maintenance scaffold 60 of the car door device of embodiment 2, the scaffold body 82 is formed of a plate material having a longitudinal direction, and one end side of the scaffold body 82 is rotatably fixed to the car door beam portion 70 by the pin 91. Then, the scaffold body 82 is changed between a 1 st posture in which the scaffold body 82 is accommodated in a state of being superimposed on the car door beam portion 70 and a 2 nd posture in which the other end side of the scaffold body 82 is projected from the car door beam portion 70 to the inside of the hoistway 20, whereby a scaffold for maintenance can be formed. Thus, the scaffold 60 for maintenance of a car door device according to embodiment 2 can attach the scaffold 82 to the car door beam portion 70 without forming the slit 70A and the support member 90 in the car door beam portion 70, and therefore the scaffold 82 can be attached to the car door device of the conventional elevator device by an attachment method. Therefore, the workability of the maintenance inspection work in the conventional elevator apparatus can be improved.
In the maintenance scaffold 60 for a car door device according to embodiment 2, the shape of the scaffold 82 is a substantially rectangular shape having one end side formed in a semicircular shape, but the shape of the scaffold 82 is not limited to this. For example, both ends may be formed in a semicircular shape, or may be formed in a shape obtained by chamfering each corner of a rectangle, or in a polygonal shape. Further, the scaffold surface S of the scaffold body 82 may be formed with irregularities, and anti-slip processing using rubber or the like may be performed.
Description of the reference symbols
10: a car room; 20: a hoistway; 20 a: a wall surface; 30: a guide rail; 31: a guide rail for counterweight; 40: a counterweight; 50: a support for counterweight; 60: a car door device; 70: a car door beam portion; 70A: a gap; 70B: a cut-out portion; 80-82: a scaffold body; 80A, 81A: a 1 st plate; 80B, 81B: a 2 nd plate; 81C: a 3 rd plate; 90: a support member; 91: a pin; 92: a stopper; 100: an elevator device; s: scaffold surface.
Claims (4)
1. A maintenance scaffold for a car door device, the maintenance scaffold for a car door device comprising:
a scaffold body having a scaffold face; and a car door beam portion that supports the scaffold body,
the scaffold body is housed in the car door beam portion in a 1 st posture in which the scaffold body does not protrude from the car door beam portion to the inside of the hoistway in a plan view when not in use,
the scaffold body is supported by the car door beam portion in a 2 nd posture projecting from the car door beam portion toward the inside of the hoistway in a plan view when in use,
when the scaffold body is supported by the car door beam portion in the 2 nd posture, the scaffold surface is parallel to the upper surface of the car door beam portion.
2. The maintenance scaffold of a car door device according to claim 1,
the scaffold body is attachable to and detachable from the car door beam portion,
when the posture is changed between the 1 st posture and the 2 nd posture, the scaffold is detached from the car door beam portion, and after the posture is changed, the scaffold is attached to the car door beam portion again.
3. The maintenance scaffold of the car door apparatus according to claim 2,
the car door beam portion has a slit penetrating the car door beam portion,
the scaffold body has: a 1 st panel having the scaffold face; and
a 2 nd plate perpendicularly protruding from a back surface side of the scaffold surface with respect to the 1 st plate,
the 1 st posture of the scaffold body is a state in which the 1 st panel is inserted into the slit and the 2 nd panel is disposed at an upper portion of the car door beam portion,
the 2 nd posture of the scaffold body is a state in which the 2 nd panel is inserted into the slit and the 1 st panel protrudes from the car door beam portion to the inside of the hoistway.
4. The maintenance scaffold of a car door device according to claim 1,
the scaffold body is formed into a flat plate shape having a long side direction and a short side direction,
one end side in the longitudinal direction of the scaffold body is attached to the car door beam portion so as to be rotatable on a horizontal plane,
the 1 st posture of the scaffold body is a state in which the other end side in the longitudinal direction is disposed at an upper portion of the car door beam portion,
the 2 nd posture of the scaffold body is a state in which the scaffold body is rotated so that the other end side in the longitudinal direction protrudes from the car door beam portion to the inside of the hoistway.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/021621 WO2018229824A1 (en) | 2017-06-12 | 2017-06-12 | Maintenance foothold for car door device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110719881A CN110719881A (en) | 2020-01-21 |
| CN110719881B true CN110719881B (en) | 2021-01-29 |
Family
ID=64660311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780091649.0A Active CN110719881B (en) | 2017-06-12 | 2017-06-12 | Scaffold for maintenance of car door device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6716035B2 (en) |
| CN (1) | CN110719881B (en) |
| WO (1) | WO2018229824A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2889031B2 (en) * | 1991-12-24 | 1999-05-10 | 株式会社竹中工務店 | How to build an elevator machine room |
| FI20001589A (en) * | 1999-07-06 | 2001-01-07 | Toshiba Kk | Active lift control system |
| CN1538930A (en) * | 2001-08-03 | 2004-10-20 | 弗拉科产品制造有限公司 | Raising system for scaffolding |
| CA2166841C (en) * | 1995-01-31 | 2006-08-22 | Heinrich Foelix | Temporary working space protection |
| CN104477736A (en) * | 2012-10-12 | 2015-04-01 | 广州广日电梯工程有限公司 | Shaft elevator installation method |
| CN106586767A (en) * | 2017-02-24 | 2017-04-26 | 富士电梯(四川)有限公司 | Elevator mounting device assembly capable of being used for shaft-free building and elevator mounting method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5160346A (en) * | 1974-11-21 | 1976-05-26 | Mitsubishi Electric Corp | EREBEETA YOASHIBASOCHI |
| JP2602310B2 (en) * | 1989-01-13 | 1997-04-23 | 株式会社日立製作所 | Scaffolding equipment for elevator installation |
| US7140473B2 (en) * | 2002-06-20 | 2006-11-28 | Otis Elevator Company | Safety top balustrade for a car of a machine room-less elevator |
| JP5174405B2 (en) * | 2007-09-10 | 2013-04-03 | 三菱電機株式会社 | Auxiliary work floor |
| JP5972161B2 (en) * | 2012-12-12 | 2016-08-17 | 株式会社日立製作所 | Elevator equipment |
-
2017
- 2017-06-12 JP JP2019524561A patent/JP6716035B2/en active Active
- 2017-06-12 CN CN201780091649.0A patent/CN110719881B/en active Active
- 2017-06-12 WO PCT/JP2017/021621 patent/WO2018229824A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2889031B2 (en) * | 1991-12-24 | 1999-05-10 | 株式会社竹中工務店 | How to build an elevator machine room |
| CA2166841C (en) * | 1995-01-31 | 2006-08-22 | Heinrich Foelix | Temporary working space protection |
| FI20001589A (en) * | 1999-07-06 | 2001-01-07 | Toshiba Kk | Active lift control system |
| CN1538930A (en) * | 2001-08-03 | 2004-10-20 | 弗拉科产品制造有限公司 | Raising system for scaffolding |
| CN104477736A (en) * | 2012-10-12 | 2015-04-01 | 广州广日电梯工程有限公司 | Shaft elevator installation method |
| CN106586767A (en) * | 2017-02-24 | 2017-04-26 | 富士电梯(四川)有限公司 | Elevator mounting device assembly capable of being used for shaft-free building and elevator mounting method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018229824A1 (en) | 2018-12-20 |
| CN110719881A (en) | 2020-01-21 |
| JPWO2018229824A1 (en) | 2019-11-07 |
| JP6716035B2 (en) | 2020-07-01 |
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