KR101569002B1 - Safety system for checking elevator under structure - Google Patents

Safety system for checking elevator under structure Download PDF

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Publication number
KR101569002B1
KR101569002B1 KR1020150122621A KR20150122621A KR101569002B1 KR 101569002 B1 KR101569002 B1 KR 101569002B1 KR 1020150122621 A KR1020150122621 A KR 1020150122621A KR 20150122621 A KR20150122621 A KR 20150122621A KR 101569002 B1 KR101569002 B1 KR 101569002B1
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KR
South Korea
Prior art keywords
cage
rope
elevator
hoistway
lower portion
Prior art date
Application number
KR1020150122621A
Other languages
Korean (ko)
Inventor
김해종
Original Assignee
(주)신일승강기
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Publication date
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Priority to KR1020150122621A priority Critical patent/KR101569002B1/en
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Publication of KR101569002B1 publication Critical patent/KR101569002B1/en

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    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing
    • 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
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B66B5/0056—Safety of maintenance personnel by preventing crushing
    • B66B5/0068—Safety of maintenance personnel by preventing crushing by activating the safety brakes when the elevator car exceeds a certain upper or lower position in the elevator shaft
    • 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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks

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  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

The present invention provides a safety system for checking the lower part of an elevator. A cage is elevated at a predetermined height to maintain and check a driving part installed in a pit which is the lower space of an elevator. As it is stopped, the height of the cage is maintained. Thereby, a worker easily enters an elevating path pit and also an accident generated by the descent of the cage due to malfunction can be prevented in advance. So, safety can be improved. Because the reliability for products increases, the worker can improve working efficiency and productivity at the same time without anxiety.

Description

[0001] SAFETY SYSTEM FOR CHECKING ELEVATOR UNDER STRUCTURE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety system for a lower inspection of an elevator that can maintain a cage stopped when a driving unit or the like provided on an elevator pit is maintained and checked. More particularly, The emergency stop means provided at the lower portion of the cage is operated to secure the cage so that the cage is not moved at the stationary position and maintenance and inspection of the driving portion provided in the pit can be ensured. ≪ / RTI >

As is well known, an elevator is installed in the inside of a building to facilitate the movement of passengers between the floors. In order to install the elevator, first, a certain space is formed inside the building and a hoistway is formed vertically. A driving unit installed at an upper portion or a lower portion of the hoistway to generate rotating power by an external power source, and a cage which is moved up and down according to driving of the driving unit, A landing platform formed on each layer to ride on the cage, and a landing door installed on the landing platform.

In order to secure the safe operation of the cage, various types of safety devices are installed in various parts of the elevator. For example, the governor installed on the upper or lower part of the hoistway may be installed under the cage when the abnormal speed of the cage is sensed. The emergency stop means is activated to stop the cage so as to safely protect the passenger.

Such an elevator carries out periodic maintenance and inspection in order to suppress the occurrence of a safety accident. In particular, the driving part, which is one of the most important parts of the elevator, manages the maintenance and inspection period with a very short period.

When the cage is installed on a pit which is a space formed at the bottom of the hoistway, the lower portion of the cage is raised and stopped to a height of about 2 m from the bottom of the pit, The operator enters the pit in a state in which the button power is turned off so that the cage can not be moved, so that the operator is forced to carry out the maintenance and inspection of the drive unit on the elevator inspection standard.

When the cage is raised and stopped at a predetermined height for maintenance and inspection of the elevator and then only the button power source is cut off, the cage is lowered due to the load or malfunction of the cage, There is an urgent need to prepare measures.

Therefore, in order to solve the above-described problems, the present invention provides a cage having a fixed height at which the cage stops at a constant height for maintenance and inspection of a driving unit provided at a pit which is a lower space of a hoistway, Thus, it is possible to prevent a safety accident that may occur due to the descent of the cage due to a malfunction, thereby greatly improving the safety and improving the reliability of the product. So that it is possible to simultaneously improve the efficiency and productivity of the work.

In order to accomplish the above object, according to the present invention, a plurality of rails are installed vertically in a hoistway formed inside a building, and a lower portion of a cage, which is raised and lowered along the rail, An elevator in which an emergency stop means is integrally mounted and a driving unit for raising and lowering the cage and a governor for detecting a rising and falling speed of the cage are installed in a pit as a space under the hoistway, A connecting bracket having a connecting hole formed at an upper portion and a lower portion thereof so that both ends of the rope wound on the auxiliary wheel can be connected and fixed, An operation bar having a rotation hole formed at an upper portion thereof so as to be rotatably coupled to the connection bracket and having a flow clip inserted vertically through the rope at a lower portion thereof; The connection bracket and the operation bar are integrally formed so as to be able to operate the emergency stop means mounted on the lower portion of the cage by the rotation shaft inserted into the insertion hole formed on the other side, A rotating body; A fixing hinge for rotatably and integrally coupling the fixing hole of the connection bracket with the rotation hole of the operation bar and the fixing hole of the rotating body; And a blocking plate formed on one side of the rope so that the rope can be movably coupled and the other side integrally fixed on the rail so as to be rotatable by the pivoting shaft.

In addition, a rotating shaft for rotatably fixing the other side of the blocking plate is interlocked with a motor so that the blocking plate is automatically rotated by driving the motor when the elevator is inspected, so that the rope can be inserted into the binding groove .

In addition, a pair of aprons provided at a lower portion of the cage is provided, a guide rail is horizontally installed at a lower portion of the cage, a connecting rod and a supporting rod are installed at the rear of the aprons, and a moving bracket is installed at a rear end of the connecting rod So that the movable bracket can be inserted into the guide rail to move left and right so that the lower portion of the cage can be opened when the elevator is inspected to secure a space in which the operator can safely enter the pit.

As described above, by providing the safety system for the elevator lower inspection of the present invention as described above, it is possible to easily enter the hoistway pit by the operator, prevent a safety accident that may occur due to the descent of the cage due to malfunction, There is a very useful effect that the work efficiency and the productivity can be improved at the same time by preventing the worker from feeling anxiety due to the improvement of the reliability of the product.

1 is a schematic diagram of the present invention;
2 is a side elevational view of a safety system for elevator lower inspection according to the present invention;
3 is a side view showing a state before operation of an operation bar which is a main part of a safety system for elevator lower inspection according to the present invention.
4 is a side view showing an operating state of an operation bar which is a main part of a safety system for an elevator lower inspection according to the present invention.
5 is a plan view and a side view showing an operating state of a shielding plate which is a main part of a safety system for an elevator lower inspection according to the present invention.
6A and 6B are views showing an operating state of a conventional emergency stop means applied to a safety system for an elevator lower check according to the present invention;
7 is a side view showing an installation state of an apron which is a main part of a safety system for an elevator lower inspection according to the present invention.
8 (a) and 8 (b) are front and rear views showing the state before and after the apron, which is a main part of the safety system for the elevator lower inspection according to the present invention.

The present invention will now be described more fully with reference to the accompanying drawings, in which embodiments of the invention may be modified in various forms, and it is to be understood that the scope of the present invention is limited only by the embodiments described below Can not be done. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

A safety system for an elevator lower check according to the present invention includes a plurality of rails 3 installed in a hoistway 1 formed inside a building and driven by a driving unit (motor) 5 provided below the hoistway 1, The cage 7 is raised and lowered along the rail 3 and the speed of the cage 7 is sensed so that a conventional emergency stop means 10 is mounted under the cage 7 and the cage 7 And a control panel C for controlling an external power supply is applied to a conventional elevator provided on a pit P as a lower space of the hoistway 1. The governor 12 is a conventional elevator, A connection bracket 100 to which both ends of the rope R connecting the auxiliary wheel 14 are fixed and a connection bracket 100 which is largely constituted by the operation bar 110, the rotating body 120, the fixed hinge 130, do.

The connecting bracket 100 is formed by machining a metal plate having a predetermined thickness into a predetermined shape and is formed by fixing the both ends of the rope R wound on the governor 12 and the auxiliary wheel 14, And a fixing hole 104 may be formed at the center of the connection hole 102 so as to pass therethrough.

The operation bar 110 is formed by processing a metal plate having a predetermined thickness into a predetermined shape. The operation bar 110 is formed to penetrate through the rotation hole 112 so as to be rotatably connected to the connection bracket 100, And the flow clip 114 may be integrally mounted.

The moving clip 114 is installed in a metal ring shape so that the rope R can be vertically inserted into the center so that the lower portion of the operating bar 110 is connected to the rope R And the like.

The rotary body 120 is installed at a lower portion of the cage 7 and functions to convert rotational motion into rectilinear motion. The rotary body 120 has a fastening hole 122 formed at one side thereof and an insertion hole 124 The rotary shaft 126 is inserted into the insertion hole 124 and installed integrally with the emergency stop means 10 mounted on the lower portion of the cage 7.

That is, the rotating shaft 126 is inserted through the insertion hole 124 formed in the rotating body 120 and installed integrally with the emergency stop means 10 mounted on the lower side of the cage 7, The emergency stop means 10 is operated while the rotating body 120 is rotated by the operating bar 110 so that the cage 7 can be kept stationary when the elevator bottom is checked.

The fixed hinge 130 is provided in the form of a metal bar having a predetermined length so that the fixing hole 104 of the connection bracket 100 is engaged with the rotation hole 112 of the actuating bar 110 and the rotation body 120 The holes 122 are aligned with each other, and then the fixed hinge 130 is inserted and coupled so as to be rotatable.

The blocking plate 140 is formed by processing a metal plate having a predetermined thickness into a predetermined shape so as to stop the flow of the operating bar 110 to rotate the rotating body 120, The other end of the rope R may be integrally fixed on the rail 3 so as to be rotatable by the pivot shaft 144. [

5, the rotation shaft 144, which rotatably fixes the other side of the blocking plate 140, is interlocked with the motor 146 so that when the elevator is inspected, It is preferable that the plate 140 is automatically rotated so that the rope R is inserted into the binding groove 142 so that it can be bound.

The operation of the elevator lower safety system of the present invention having a plurality of configurations as described above will be described with reference to FIGS. 3 to 5. FIG.

First, the cage 7 is moved to a predetermined height under the hoistway to check the lower part of the elevator, and then the blocking plate 140 is manually rotated or rotated automatically by driving the motor (146) The rope R is lowered without interference in the coupling groove 142 when the cage 7 is further moved downward while the rope R is engaged.

The lower end of the operating bar 110 connected to the lowering rope R by the flow clip 114 contacts the upper portion of the blocking plate 140 to stop the movement of the rope R. However, The rotatable shaft 120 rotatably coupled to the connection bracket 100 and the operation bar 110 by the fixed hinge 130 rotates the rotation shaft 126 as the rotatable shaft 7 descends, The emergency stop means 10 mounted on the lower portion of the cage 7 is operated so as to be interlocked with the rotary shaft 126 so that the lowering of the cage 7 is forcibly stopped so that the cage 7 is kept stopped The lowering of the cage 7 due to the malfunction of the elevator can be prevented in advance.

That is, when the operation bar 110 integrally connected to the rope R by the connection bracket 100 and the flow clip 114 abuts against the blocking plate 140 and stops, The emergency stop means 10 forcibly stops the lowering of the cage 7 by rotating the rotary shaft 126. The emergency stop means 10 includes the rotation shaft 126 And at the same time, the wedge of the emergency stop means 10 is raised to closely contact the rail 3, so that the brake is applied and the cage 7 is stopped.

7 and 8, an apron 200 is installed on the lower portion of the cage 7 to prevent falling. In the present invention, the apron 200 installed at a lower portion of the cage 7 A guide rail 210 is horizontally installed at a lower portion of the cage 7 and a connecting block 202 and a support block 204 are installed at the rear of the apron 200, The movable bracket 206 is inserted into the guide rail 210 so that the movable bracket 206 can be moved left and right so that the lower portion of the cage 7 is opened when the elevator is inspected, It is preferable that a space for safely entering into the pit P of the housing 1 is secured.

That is, when the cage 7 is stopped at a predetermined height from the lower portion of the hoistway 1, a very narrow space is formed between the cage 7 and the pit P of the hoistway 1, When the apron 200 installed at the lower portion of the cage 7 is opened to both sides of the cage 7, the movable bracket 206 formed behind the connecting block 202 of the apron 200 moves left and right along the guide rail 210 So that it is possible to secure a sufficient space for an operator to enter the inside of the hoistway (1).

When the cage 7 is elevated to a predetermined height after the completion of the lower check of the hoistway 1, the operation bar 110 and the blocking plate 140 are separated from each other, The stopping of the means 10 is simultaneously released and the blocking plate 140 is manually or automatically turned so that the rope R is released from the binding groove 142 of the blocking plate 140 so that the rope R is freely lifted and lowered .

Then, after the operator leaves the pit (P) of the hoistway (1) through the space formed by the opening of the APRON (200), the APRON (200) is closed to prevent the fall.

The safety control system for the lower part of the elevator according to the present invention having the above-described structure is provided with an emergency stop means (not shown) installed under the cage 7 by the operation of the blocking plate 140, the operation bar 110 and the rotating body 120, It is very easy for an operator to enter the hoistway 1 pit P by allowing the apron 200 to be opened and closed by forcibly stopping the cage 7 by operating the cage 7 The safety can be prevented in advance due to the failure of the cage 7 due to the malfunction, thereby improving the safety. By improving the reliability of the product, the operator does not feel anxiety, It is an extremely highly industrially applicable invention that can be improved.

It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof, It is to be understood that the invention is not limited to the forms mentioned in the foregoing. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: connection bracket 110: operation bar
114: floating clip 120: rotating body
126: rotating shaft 130: fixed hinge
140: blocking plate 142: binding groove
144: Pivot shaft 146: Motor
200: Apron 210: Guide rail

Claims (3)

A plurality of rails 3 are vertically installed in a hoistway 1 formed inside a building and an emergency stop means 10 is integrally mounted on a lower portion of a cage 7 which is raised and lowered along the rail 3 A drive unit 5 for raising and lowering the cage 7 and a governor 12 for sensing the speed of the cage 7 to ascend and descend are installed in an elevator provided on the pit P as the lower space of the hoistway 1 As a result,
A connecting hole 102 is formed on the upper and lower sides of the governor 12 so that both ends of the rope R wound on the auxiliary wheel 14 installed at the uppermost portion of the hoistway 1 can be connected and fixed, A connection bracket 100 formed at the center so as to penetrate the fixing hole 104;
A rotation hole 112 is formed at an upper portion of the connection bracket 100 so as to be rotatably fastened to the connection bracket 100 and a movement clip 114 having a rope R inserted vertically through the operation bar 110);
The connection bracket 100 and the operation bar 110 are coupled to each other by a rotation shaft 126 which is formed at one side of the coupling hole 122 so as to be rotatably and integrally coupled with the operation bar 110 and inserted into the insertion hole 124 formed at the other side A rotating body 120 integrally formed so as to be able to operate the emergency stop means 10 mounted on the lower portion of the cage 7;
A fixing hole 104 of the connection bracket 100 and a rotation hole 112 of the actuating bar 110 and a fixing hole 122 of the rotating body 120 are coincident with each other, A hinge 130;
A coupling groove 142 is formed on one side of the rope R so that the rope R can be movably coupled and the other side of the coupling plate 144 is integrally fixed on the rail 3 so as to be rotatable by the pivot shaft 144 140). ≪ / RTI >
The method according to claim 1,
The rotation shaft 144 for pivotally fixing the other side of the blocking plate 140 is interlocked with the motor 146 to automatically rotate the blocking plate 140 by driving the motor 146 when the elevator is inspected So that the rope (R) can be inserted into the binding groove (142) and be attached to the binding groove (142).
The method according to claim 1,
A guide rail 210 is horizontally installed on a lower portion of the cage 7 and a connecting rod 202 is provided on the rear side of the apron 200. [ A movable bracket 206 is installed at the rear end of the connecting block 202 so that the movable bracket 206 can be inserted into the guide rail 210 to move left and right, Wherein a lower portion of the cage (7) is opened to insure a space in which an operator can safely enter the pit (P) of the hoistway (1).
KR1020150122621A 2015-08-31 2015-08-31 Safety system for checking elevator under structure KR101569002B1 (en)

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KR1020150122621A KR101569002B1 (en) 2015-08-31 2015-08-31 Safety system for checking elevator under structure

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KR1020150122621A KR101569002B1 (en) 2015-08-31 2015-08-31 Safety system for checking elevator under structure

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101715330B1 (en) 2016-06-22 2017-03-15 주식회사 한림기업 Manual operation remote control for pit of elevator
KR20180052189A (en) 2016-11-10 2018-05-18 한국승강기대학교 산학협력단 Intrusion management system for car of elevator
KR102036785B1 (en) 2019-06-24 2019-11-26 김길곤 Method and apparatus for controlling elevator maintenance and repair process
KR20220069729A (en) 2020-11-20 2022-05-27 경기과학기술대학교 산학협력단 Pressure testing system of fall prevention apparatus for elevator
CN116545186A (en) * 2023-04-25 2023-08-04 中国长江电力股份有限公司 Annular sliding rail car operation vehicle for overhauling generator stator
CN117740306A (en) * 2024-02-07 2024-03-22 浩亭(珠海)制造有限公司 Mechanical drop test device for testing connector and test method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101715330B1 (en) 2016-06-22 2017-03-15 주식회사 한림기업 Manual operation remote control for pit of elevator
KR20180052189A (en) 2016-11-10 2018-05-18 한국승강기대학교 산학협력단 Intrusion management system for car of elevator
KR102036785B1 (en) 2019-06-24 2019-11-26 김길곤 Method and apparatus for controlling elevator maintenance and repair process
KR20220069729A (en) 2020-11-20 2022-05-27 경기과학기술대학교 산학협력단 Pressure testing system of fall prevention apparatus for elevator
CN116545186A (en) * 2023-04-25 2023-08-04 中国长江电力股份有限公司 Annular sliding rail car operation vehicle for overhauling generator stator
CN116545186B (en) * 2023-04-25 2024-03-29 中国长江电力股份有限公司 Annular sliding rail car operation vehicle for overhauling generator stator
CN117740306A (en) * 2024-02-07 2024-03-22 浩亭(珠海)制造有限公司 Mechanical drop test device for testing connector and test method thereof
CN117740306B (en) * 2024-02-07 2024-04-30 浩亭(珠海)制造有限公司 Mechanical drop test device for testing connector and test method thereof

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