CN103086217A - Protective device for underneath-type machine-room-less maintenance - Google Patents
Protective device for underneath-type machine-room-less maintenance Download PDFInfo
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- CN103086217A CN103086217A CN2011103320563A CN201110332056A CN103086217A CN 103086217 A CN103086217 A CN 103086217A CN 2011103320563 A CN2011103320563 A CN 2011103320563A CN 201110332056 A CN201110332056 A CN 201110332056A CN 103086217 A CN103086217 A CN 103086217A
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Abstract
The invention discloses a protect device for underneath-type machine-room-less maintenance. The protective device comprises three switches, one is an HD 1370 normal closed limit switch arranged at a position 2m away from floor of a work site on the lowest portion of a cage, the other two are HD1371 normal open switches, one of the HD1371 normal open switches is used for detecting whether the protective device is installed in place or not, and the other of the HD1371 normal open switches is used for detecting whether the protective device is restored in place or not. An electrical safety device used for checking up working position of a stopping device is arranged in the protective device, and therefore, when the mechanical stopping device is at a wrong parking position before being at a working position, all operation of the cage can be prevented, and switch mulfunction or potential safety hazards due to damage of the switches are avoided.
Description
Technical field
The technology of the present invention relates to bottom elevator without cabin, when pit carries out overhauling elevator, utilizes mechanical protection device and electric safety switch to form the loop, guarantees maintainer's safety, and this patent belongs to the elevator technology field.
Background technology
Along with the development of elevator cause, machine-roomless lift just is widely used because of the self structure advantage.But the maintenance of machine-roomless lift tradition relatively has machine room elevator to have certain potential safety hazard, the brainstrust of these new inspection rule and some elevator industries is proposed a series of requirements reduce to keep in repair risk.Thereby utilize mechanical protection device and electric loop to control to this this patent and reduce the maintenance risk.
Summary of the invention
The present invention is directed to deficiency of the prior art considers that the underneath type machine room may exist when keeping in repair in pit potential safety hazard and be provided with maintenance protecting device, thereby and jointly control by machinery and electric loop and guarantee to keep in repair safety.
The present invention is achieved through the following technical solutions goal of the invention:
A kind of underneath type machine room maintenance protective device, described protective device comprises three switches, one is the normally closed limit switch that is installed on the HD1370 at the ground 2m place of the minimum parts of car in the work-yard, two other HD1371 normal open switch, whether one be in place for detection of protective device; Whether another has recovered to put in place for detection of protective device.
Beneficial effect:
When the Active workings that checks, maintenance drives main frame, control housing was located at pit, if check, maintenance work needs mobile car maybe may cause the out of control and accidental movement of car, repairing platform device should be set, this device can be realized:
(1) stopping device stop car movement is set, this device makes ground in the work-yard and the distance between the minimum parts of car be not less than 2m, to reach enough survival spaces.
(2) electric safety device that checks mechanical stopping device control position is set, when the machine made stop device is in non-stand and does not enter control position, all operations of car can be prevented, thereby switch misoperation or damage can be effectively prevented and the potential safety hazard that produces.
(3) after the machine made stop device enters control position, only can control by apparatus for examination and repair the electronic movement of car.The automatic switchover running state guarantees to keep in repair safety.
(4) outside hoistway, the electrical reset device can be set, only have by handling this device just to make elevator return to normal working.
Description of drawings
Fig. 1 is bottom elevator without cabin protective device schematic diagram of the present invention (when device is packed up).
Fig. 2 is bottom elevator without cabin protective device schematic diagram (when device is enabled).
Fig. 3 is electric control loop schematic diagram of the present invention.
The specific embodiment
Consider the potential safety hazard that the underneath type machine room may exist when keeping in repair in pit, in view of the requirement of new inspection rule and brainstrust, be provided with maintenance protecting device again, thereby and jointly control by machinery and electric loop and guarantee to keep in repair safety.
As shown in Figure 1, this covering device arranges three switches altogether in hoistway, and one is the normally closed limit switch of HD1370, triggers with hitting work.This switch is installed on the ground 2m place of the minimum parts of car in the work-yard, when elevator being detected and be in the pit service mode, car stop when running to this switch position that elevator is descending, can not continue descending, can only be up.
Two HD1371 normal open switch are set on the lift protects device, and whether one be in place for detection of protective device; Whether another has recovered to put in place for detection of protective device.Comprising following several possibilities.
1, move when the DZJC switch being detected, when the FWJC switch did not move, system was in service mode, and this moment, elevator can upwards move, and went downwards to above-mentioned limit switch place namely out of service.
2, do not move when the DZJC switch being detected, when the FWJC switch had moved, system was in normal operating condition, and all can move this moment up and down, and the limit switch that is not increased is controlled.
3, do not move when the DZJC switch being detected, when the FWJC switch did not move, system thought that protective device do not pack up fully or enable, and this moment, elevator cut off safety return circuit, was in halted state.
Electricly realize that schematic diagram is as follows:
In figure below: SLDT is normal limit switch; The limit switch that SLDT0 uses when being service mode; Whether the DZJC switch is enabled for detection of protective device; Whether the FWJC switch is packed up for detection of protective device; J2, J3 are the 24V relay.
As seen from the figure: the safety return circuit aspect only have when the J2 actuating of relay, J3 relay be failure to actuate or the J2 relay is failure to actuate, during the J3 actuating of relay, safety return circuit is logical.Be elevator normally move or when being in service mode safety return circuit logical, stop the scalariform attitude otherwise be in.
Maintenance aspect, loop is logical is auto state, disconnects and is in inspecting state.When system processes, (protective device is not packed up) elevator is in inspecting state as long as the J3 relay is failure to actuate.
The control loop aspect is spacing to be comprised of two loops, and when the J3 action, J2 is failure to actuate (when namely being in normal condition), and newly-increased limit switch will be inoperative by short circuit.When J3 is failure to actuate, J2 moves (when namely being in service mode), the spacing and former spacing control that spacing loop is increased newly simultaneously.
In sum: be equipped with this cover protective device, the safety factor in the time of can greatly improving maintenance.
Claims (1)
1. a underneath type machine room keeps in repair and uses protective device, it is characterized in that: described protective device comprises three switches, one is the normally closed limit switch that is installed on the HD1370 at the ground 2m place of the minimum parts of car in the work-yard, two other HD1371 normal open switch, whether one be in place for detection of protective device; Whether another has recovered to put in place for detection of protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103320563A CN103086217A (en) | 2011-10-28 | 2011-10-28 | Protective device for underneath-type machine-room-less maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103320563A CN103086217A (en) | 2011-10-28 | 2011-10-28 | Protective device for underneath-type machine-room-less maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103086217A true CN103086217A (en) | 2013-05-08 |
Family
ID=48199434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103320563A Withdrawn CN103086217A (en) | 2011-10-28 | 2011-10-28 | Protective device for underneath-type machine-room-less maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103086217A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522636A (en) * | 2016-11-30 | 2017-03-22 | 国网天津市电力公司 | Three-proofing protection system of computer room equipment |
| CN106395518B (en) * | 2016-11-11 | 2019-04-26 | 西继迅达（许昌）电梯有限公司 | For controlling the elevator motion control plate of apparatus for examination and repair priority |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637842A (en) * | 1993-12-01 | 1997-06-10 | Mitsubishi Denki Kabushiki Kaisha | Elevator safety device |
| JP2000327239A (en) * | 1999-05-21 | 2000-11-28 | Mitsubishi Electric Corp | Elevator system |
| CN1286208A (en) * | 1999-08-30 | 2001-03-07 | 奥蒂斯电梯公司 | Safety device and method for entering in elevator shaft |
| JP2001302134A (en) * | 2000-04-18 | 2001-10-31 | Mitsubishi Electric Corp | Maintenance operation device for elevator |
| JP2007210704A (en) * | 2006-02-07 | 2007-08-23 | Hitachi Building Systems Co Ltd | Testing method for elevator shock absorbing unit |
| WO2008062500A1 (en) * | 2006-11-20 | 2008-05-29 | Mitsubishi Electric Corporation | Elevator system |
-
2011
- 2011-10-28 CN CN2011103320563A patent/CN103086217A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637842A (en) * | 1993-12-01 | 1997-06-10 | Mitsubishi Denki Kabushiki Kaisha | Elevator safety device |
| JP2000327239A (en) * | 1999-05-21 | 2000-11-28 | Mitsubishi Electric Corp | Elevator system |
| CN1286208A (en) * | 1999-08-30 | 2001-03-07 | 奥蒂斯电梯公司 | Safety device and method for entering in elevator shaft |
| JP2001302134A (en) * | 2000-04-18 | 2001-10-31 | Mitsubishi Electric Corp | Maintenance operation device for elevator |
| JP2007210704A (en) * | 2006-02-07 | 2007-08-23 | Hitachi Building Systems Co Ltd | Testing method for elevator shock absorbing unit |
| WO2008062500A1 (en) * | 2006-11-20 | 2008-05-29 | Mitsubishi Electric Corporation | Elevator system |
| CN101511716A (en) * | 2006-11-20 | 2009-08-19 | 三菱电机株式会社 | Elevator apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395518B (en) * | 2016-11-11 | 2019-04-26 | 西继迅达（许昌）电梯有限公司 | For controlling the elevator motion control plate of apparatus for examination and repair priority |
| CN106522636A (en) * | 2016-11-30 | 2017-03-22 | 国网天津市电力公司 | Three-proofing protection system of computer room equipment |
| CN106522636B (en) * | 2016-11-30 | 2018-11-20 | 国网天津市电力公司 | A kind of calculator room equipment " three proofings " guard system |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130508 |