CN203492152U - Control system for vertical shaft grab bucket lifting system safety - Google Patents
Control system for vertical shaft grab bucket lifting system safety Download PDFInfo
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- CN203492152U CN203492152U CN201320651724.3U CN201320651724U CN203492152U CN 203492152 U CN203492152 U CN 203492152U CN 201320651724 U CN201320651724 U CN 201320651724U CN 203492152 U CN203492152 U CN 203492152U
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- bucket elevator
- elevator system
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Abstract
The utility model relates to a control system for vertical shaft grab bucket lifting system safety. The control system comprises a video monitoring device. The video monitoring device comprises a video camera, an image decollator and a monitor, wherein the video camera, the image decollator and the monitor are connected through video lines. The video camera is fixed on a well wall of the vertical shaft through a bracket. The bracket is tightly connected with the video camera through bolts. Installed in an operation chamber, the monitor is disposed at the central front part of the operation chamber and opposite to a driver seat of the operation chamber. The image decollator is separately connected with the monitor and the video camera through video lines. The control system effectively overcomes the problems that the conventional grab bucket lifting system has potential safety hazard in operation. The control system is low in cost, recyclable, and easy to maintain and repair, and fully ensures safe operation of the grab bucket lifting system. The control system effectively prevents accidents from happening, ensures safe and reliable operation or hoisting equipment, and is suitable for popularization and application in the fields related to urban subway construction and the fields utilizing the hoisting machinery system.
Description
Technical field
The utility model relates to the equipment technical field that ensures hoisting machinery handling safety, relates in particular to a kind of control system for Urban Metro Construction vertical shaft grab bucket elevator system safety.
Background technology
At present, Urban Metro Construction tunneling vertical shaft is slagged tap, lifting operation equipment generally adopts bridge crane, and standard span is 10.4m, and post and intercolumniation are 7m, altogether 21m.Hoisting machinery is as the very high special equipment of security requirement, if poor in machine condition, maintain construction operation in the illegal situations such as improper or operation driver awareness of safety is not strong, personnel's injury accident all very easily occurs.
The problem taking place frequently for hoisting machinery security incident is mainly due to the following defect of ubiquity in operating process: (one) is because of signalman and operation driver links up improper or ditch messenger does not cause slagging tap by force and lifting operation is obstructed; (2) in the shaft excavation stage, machinery can cause while cutting the earth and stir up a cloud of dust and the retaining wall spray anchor stage, spray anchor can cause serious mud particle thing, in addition the tail gas that in tunnel, electric welding field, the operation of excavator excavation produce, under the High Pressure of tunnel fan, vertical shaft well head can produce a certain amount of airborne dust, the sight line that operates driver is had a strong impact on, thereby very easily damage security incident; (3) hoisting and hanging operation or work standard is indefinite, and it is coarse that workmen bundlees technology.Generally, in vertical shaft, the safety-critical of hoisting machinery operation is guarantee grab bucket, links up with the handling safety of these elevator system, thereby just can make the job safety of hoisting machinery system be protected.
Therefore, in order to prevent that hoisting machinery accident from occurring, ensure the safe and reliable use of hoisting machinery, need badly research and develop can effective guarantee vertical shaft the technology of hook, grab bucket elevator system safety, the job safety that is used in the hoisting machinery system in the association areas such as Urban Metro Construction is fully ensured.
Utility model content
The purpose of this utility model is for the problems referred to above, a kind of control system of vertical shaft grab bucket elevator system safety is provided, with the setting of simple optimizing, method easily, by lower economic input, the efficient guarantee of realization to vertical shaft grab bucket elevator system safety, and then the abundant safety that guarantees relevant hoisting machinery operation.
The technical scheme that the utility model is dealt with problems is: a kind of control method of vertical shaft grab bucket elevator system safety, by video monitoring apparatus, by the job site image transmitting of grab bucket elevator system, give the driver who controls grab bucket elevator system; In described video monitoring apparatus, the camera record job site image by with driving the overhead traveling crane operation of grab bucket elevator system, is transferred to image splitter and monitor by video line successively by the job site image of described camera record; Described monitor is positioned at the driver's who controls grab bucket elevator system horizontal vision coverage area.
Further, by direction of travel and the walking safety prompt function of grab bucket elevator system direction of travel and safety reminding device indication grab bucket elevator system.
Preferably, by described communication and command device command control post, state video monitoring apparatus and described grab bucket elevator system direction of travel and safety reminding device.
Preferably, described communication and command device comprises intercom, is used for controlling between the driver of grab bucket elevator system and signal command personnel gets in touch with communication by intercom.
The utility model also provides a kind of control system of vertical shaft grab bucket elevator system safety for the control method of above-mentioned vertical shaft grab bucket elevator system safety, described vertical shaft grab bucket elevator system is the grab bucket elevator system of the hoisting equipment of operation in vertical shaft, described grab bucket elevator system comprises the overhead traveling crane of operating room and lifting, wherein: described control system comprises video monitoring apparatus, described video monitoring apparatus comprises video camera, image splitter and the monitor being connected by video line; Described video camera is fixed on by bracket on the borehole wall of vertical shaft, and described bracket and described video camera are bolted connection; Described monitor is installed in operating room, be arranged in operating room just above and be oppositely arranged with operating room driver driving seat; Described image splitter is connected with video camera with described monitor respectively by video line.
Further, described control system also comprises communication and command device and grab bucket elevator system direction of travel and safety reminding device; Described communication and command device is used for commanding controls described video monitoring apparatus and grab bucket elevator system direction of travel and safety reminding device.
Preferably, described communication and command device comprises the intercom of getting in touch with between the grab bucket driver of elevator system and signal command personnel for controlling; Described grab bucket elevator system direction of travel and safety reminding device comprise operating grip switch and by display lamp and alarm bell and the Alarm bell's switch of its control, described operating grip switch is along shaft wall cable installation in pipe, described Alarm bell's switch is arranged in operating room, be positioned at driver driving seat one side, be preferably arranged on driver's the right hand one side; Described display lamp and alarm bell are arranged on vertical shaft, are positioned at the offside of operating room; Described operating grip switch and Alarm bell's switch are controlled by communication and command device commander, or, by operating grip switch described in signal command personnel control, by the driver who controls grab bucket elevator system, control described Alarm bell's switch.
Further, described bracket is fixed on shaft wall by expansion bolt; Described monitor is fixedly installed in operating room with bolt.
Further, described video line association is distributed on overhead traveling crane below and shaft wall, by pvc pipe, lays, and by U-shaped pipe clamp, is fixed on shaft wall, along shaft wall, lays to video camera place, is connected with video camera; Described video line by operating room bore a hole into, with trunking plate, lay, be connected with described monitor, centre installs described image splitter additional; Steel wire rope is set up at two ends at overhead traveling crane walking track, and on described steel wire rope, interval hangs stainless steel pulley, and described video line passes and is added in the pulley hole place of described stainless steel pulley, and is fastened with insulating tape.It is mainly based on overhead traveling crane lifting that this kind arranges, and when slagging tap operation walking, need repeat to move at pit mouth and slag field, village, for controlling at any time job site situation, need make video line move with overhead traveling crane; In addition, when mounted, preferably, at overhead traveling crane walking track two ends, weld 25mm I-steel or add steel wire rope wire fastening device, middle connecting steel wire ropes, preferred 6mm steel wire rope, the 2m of being often separated by steel wire rope hangs a stainless steel pulley, passes and adds video line, and be fastened with insulating tape at pulley hole place, so both guarantee the mobility of video line, also avoided the wear and rupture of video line.
Further, the corresponding setting of transverse passage-way of described image splitter and vertical shaft, preferably, when the transverse passage-way of vertical shaft is 4 layers, described image splitter is 4 image splitters; Picture segmentation implement body arranges according to the quantity of transverse passage-way to be determined.
Further, be provided with voice signal emission key on described intercom, driver and signal command personnel are adjusted to same channel, by pinning emission key, talk, and the distance of speech is preferably mouth 2-5 centimetre, talk to completely by unclamping emission key, finishing voice communication.
Further, in grab bucket elevator system direction of travel and safety reminding device, described display lamp is included in the color lamp of the different colours of different directions setting, and described alarm bell is arranged on the centre of each color lamp; Preferably be set to, along East, West, South, North four direction, the color lamp that four kinds of color Yi Yinqi drivers note is set.
Further, described monitor is LCD monitor, and preferably, described LCD monitor is 15 cun of LCD monitors, in concrete application, and can be according to the concrete specification of determining monitor of operating room size.
In the utility model, described grab bucket elevator system is the important component part of hoisting equipment, applicable too for the elevator system of the formations such as hook with grab bucket identical function.
Before the control method and control system thereof of application the utility model vertical shaft grab bucket elevator system safety, relevant construction project department equipment portion should specifically formulate hoisting and hanging job standardization administrative manual according to the utility model, define job site all article lifting operations standard and requirement, operation driver, signal command personnel, give training after study, then carry out execute-in-place and application.By the control method of the utility model vertical shaft grab bucket elevator system safety and the application of control system thereof, can make the man-machine cooperation that is more prone to reach, can fully stop any hoisting and hanging operation in job site and operate against regulations and commander; Wherein, the application of communication and command device can effectively avoid that improper or ditch messenger does not cause slagging tap by force and lifting operation is obstructed because signalman and operation driver link up; Effective application of video monitoring apparatus can avoid driver to judge by accident, especially at shaft excavation stage, machinery, cut the earth, when the stage such as retaining wall spray anchor is caused airborne dust and serious mud particle thing, tail gas etc. have a strong impact on operation driver sight line phenomenon, thereby fully improve processing safety, effectively avoid injuring security incident and occur; Also can find in time the problems such as hoisting and hanging workmen binding, by communication and command device, inform commanding in time, avoid having an accident; And related each part device can repeat along with the transfer of hoisting equipment to install and use in the control system of the utility model elevator system safety, when improving coefficient of safety, also saved cost, avoided building the wasting of resources of fixture.
Compared with prior art, the beneficial effects of the utility model are: novel structure, method is reasonable in design, easy and simple to handle, structural design optimization, easy operating and commanding grasp and skilled use fast, have effectively solved the security hidden trouble that existing grab bucket elevator system operation exists, and cost is low, can repeat to recycle, be easy to maintenance, for the safety work of grab bucket elevator system provides abundant guarantee; The accident that effectively prevented occurs, and guarantees the safe and reliable operation of hoisting equipment, is suitable for applying in the field of the association area application hoisting machinery systems such as Urban Metro Construction.
Accompanying drawing explanation
Fig. 1 gets in touch with communication schematic diagram up and down for operating driver and signal command librarian use intercom;
Fig. 2 is the structural representation of installation video monitoring apparatus of the control system of vertical shaft grab bucket elevator system safety;
Fig. 3 is the part-structure schematic diagram of installation video camera of the control system of vertical shaft grab bucket elevator system safety;
Fig. 4 is the structural representation of the control system of vertical shaft grab bucket elevator system safety.
Shown in figure: the 1-elevator system of grabbing bucket, 2-vertical shaft, 3-driver, 4-contact ditch messenger transmission signal route, 5-signal command personnel, 6-steel wire rope wire fastening device, 7-steel wire rope, 8-pulley, 9-monitor, 10-PVC pipe, 11-bracket, 12-video camera.
Embodiment
Below in conjunction with accompanying drawing, describe the utility model in detail.
As shown in Figures 1 to 4, the control method of a kind of vertical shaft grab bucket elevator system safety of the present utility model, gives by the job site image transmitting of grab bucket elevator system 1 driver 3 who controls grab bucket elevator system 1 by video monitoring apparatus; In described video monitoring apparatus, by with driving the video camera 12 of the overhead traveling crane operation of grab bucket elevator system 1 to record job site image, by video line, the job site image of described video camera 12 records is transferred to image splitter and monitor 9 successively; Described monitor 9 is positioned at horizontal vision coverage area of the driver 3.
As shown in Figures 1 to 4, in the control method of above-mentioned vertical shaft grab bucket elevator system safety, for further improving safety guarantee, by direction of travel and the walking safety prompt function of grab bucket elevator system direction of travel and safety reminding device indication grab bucket elevator system 1; For strengthening linking up in time operating mode and adjust Job Operations scheme, by described communication and command device command control post, state video monitoring apparatus and described grab bucket elevator system direction of travel and safety reminding device, wherein, described communication and command device comprises intercom, by intercom, is used for getting in touch with communication between driver 3 and signal command personnel 5.
In the application of the control method of above-mentioned vertical shaft grab bucket elevator system safety, effective application of video monitoring apparatus can avoid driver to judge by accident, especially at shaft excavation stage, machinery, cut the earth, when the stage such as retaining wall spray anchor is caused airborne dust and serious mud particle thing, tail gas etc. have a strong impact on operation driver sight line phenomenon, thereby fully improve processing safety, effectively avoid injuring security incident and occur; The application of communication and command device can effectively avoid because of signalman and operation driver links up improper or ditch messenger does not cause slagging tap by force and lifting operation is obstructed, also can be to finding in time that by scene and video monitoring apparatus the problems such as hoisting and hanging workmen binding process in time, by communication and command device, inform commanding and driver in time, avoid having an accident.In addition, because of the important component part that described grab bucket elevator system 1 is hoisting equipment, applicable too for the elevator system said method of the formations such as hook with grab bucket identical function.
Control method for above-mentioned vertical shaft grab bucket elevator system safety, can realize by following control system.Particularly, as shown in Figures 1 to 4, a kind of control system of vertical shaft grab bucket elevator system safety, described vertical shaft grab bucket elevator system 1 is the grab bucket elevator system of the hoisting equipment of operation in vertical shaft 2, described grab bucket elevator system 1 comprises the overhead traveling crane of operating room and lifting, wherein: described control system comprises video monitoring apparatus, described video monitoring apparatus comprises video camera 12, image splitter and the monitor 9 being connected by video line; Video camera 12 is fixed on by bracket 11 on the borehole wall of vertical shaft 2, and bracket 11 is bolted connection with video camera 12; Bracket 11 is fixed on the borehole wall of vertical shaft 2 by expansion bolt; Described monitor 9 use bolts are fixedly installed in operating room, are arranged in being oppositely arranged with operating room driver driving seat of operating room just above; Described image splitter is connected with video camera 12 with monitor 9 respectively by video line.Wherein, described monitor 9 is LCD monitor, is conventionally preferably 15 cun of LCD monitors, specifically according to the specification of the selected monitor 9 of operating room size.
As shown in Figures 1 to 4, when the control system of above-mentioned vertical shaft grab bucket elevator system safety specifically arranges, based on overhead traveling crane lifting, when slagging tap operation walking, need repeat to move at pit mouth and slag field, village, for controlling at any time job site situation, need make video line move with overhead traveling crane, described video line association is distributed on the borehole wall of overhead traveling crane below and vertical shaft 2, by pvc pipe 10, lays, by U-shaped pipe clamp, be fixed on the borehole wall of vertical shaft 2, along shaft wall, lay to video camera place, be connected with video camera; Described video line by operating room bore a hole into, with trunking plate, lay, be connected with monitor 9, centre installs described image splitter additional; Steel wire rope 7 is set up at two ends at overhead traveling crane walking track, and on described steel wire rope 7, interval hangs stainless steel pulley 8, and described video line passes and is added in the pulley hole place of described stainless steel pulley 8, and is fastened with insulating tape.In addition, when mounted, for strengthening steadiness, at overhead traveling crane walking track two ends, weld 25mm I-steel or add steel wire rope wire fastening device 6, middle connecting steel wire ropes 7, preferred 6mm steel wire rope, the 2m of being often separated by steel wire rope 7 hangs a stainless steel pulley 8, passes and adds video line, and be fastened with insulating tape at pulley hole place, can guarantee the mobility of video line like this, also can avoid the wear and rupture of video line.
In the control system of above-mentioned vertical shaft grab bucket elevator system safety, in the arranging of video monitoring apparatus, the corresponding setting of transverse passage-way of described image splitter and vertical shaft 2, picture segmentation implement body arranges according to the quantity of transverse passage-way to be determined, select to be preferably, when the transverse passage-way of vertical shaft 2 is 4 layers, described image splitter is 4 image splitters.
In the control system of above-mentioned vertical shaft grab bucket elevator system safety, be the efficient operation of safeguards system, described control system is also provided with communication and command device and grab bucket elevator system direction of travel and safety reminding device; Described communication and command device is used for commanding controls described video monitoring apparatus and grab bucket elevator system direction of travel and safety reminding device, and described communication and command device comprises the intercom of getting in touch with between driver 3 and signal command personnel 5; On described intercom, be provided with voice signal emission key, during application, driver and signal command personnel are adjusted to same channel, by pinning emission key, talk, and the distance of speech is preferably mouth 2-5 centimetre, talk to completely by unclamping emission key, finishing voice communication.
In the control system of above-mentioned vertical shaft grab bucket elevator system safety, described grab bucket elevator system direction of travel and safety reminding device comprise operating grip switch and by display lamp and alarm bell and the Alarm bell's switch of its control, described operating grip switch is along shaft wall cable installation in pipe, described Alarm bell's switch is arranged in operating room, be positioned at driver driving seat one side, be preferably arranged on driver's the right hand one side; Described display lamp and alarm bell are arranged on vertical shaft 2, are positioned at the offside of operating room; Described operating grip switch and Alarm bell's switch are controlled by communication and command device commander, or, by operating grip switch described in signal command personnel control, by the driver who controls grab bucket elevator system, control described Alarm bell's switch.Wherein, described display lamp is included in the color lamp of the different colours of different directions setting, and described alarm bell is arranged on the centre of each color lamp, and alarm bell can be electric bell; Preferably be set to, along East, West, South, North four direction, the color lamp that four kinds of color Yi Yinqi drivers note is set.In concrete operations, in driver and signal command personnel's Operating Guideline flow process, the tinkle of bells when first clear and definite signal command personnel (being signalman) and driver operation is set to stop, on two sound, under three sound, click and represent that grab bucket elevator system stops operation, double click and represent that grab bucket elevator system starts to promote operation, by three times, represent that grab bucket elevator system starts to fall grab bucket or auxiliary hook operation, grab bucket or auxiliary hook enter after the bias internal job position of quarrel storehouse, shaft bottom, signal command personnel press and arrow button corresponding on operating grip, grab bucket elevator system direction of travel and safety reminding device can send the pilot light of corresponding direction, now the tinkle of bells does not ring, under above-mentioned rule instructs, concrete operations flow process is: if signalman clicks bell button, in aboveground quarrel storehouse, electric bell sends, and driver stops operation after hearing bell ring, if signalman double clicks bell button, in aboveground quarrel storehouse, electric bell sends two sound, and driver starts to promote operation after hearing two sound bell rings, if signalman is by three times bell buttons, in aboveground quarrel storehouse, electric bell sends three sound, driver hears and starts to fall grab bucket or auxiliary hook operation after three sound bell rings (in operation, if pressing two traffic lights simultaneously, signalman represents with auxiliary hook), then, grab bucket or auxiliary hook enter deposits operation in quarrel storehouse, grab bucket or auxiliary hook job position occur in skew job area (if grab bucket driver sees when two lamps are simultaneously bright, represent to use auxiliary hook operation), signalman is in conjunction with scene grab bucket or auxiliary hook offset direction, press corresponding east on operating grip, west, south, north indicates (if move still by the tinkle of bells and light operation upper and lower and four corners of the world during auxiliary hook operation), wherein: as signalman presses, indicate northern power knob, driver sees that in driver's cabin opposite indicates the blue indicator light bright (the tinkle of bells does not ring) on the north, start dolly, northwards edge point is moving travels, as signalman presses, indicate southern power knob, driver sees that in driver's cabin opposite indicates the green indicating lamp bright (the tinkle of bells does not ring) in south, starts dolly, and edge point to the south is moving to travel, as signalman presses, indicate eastern power knob, driver sees that in driver's cabin opposite indicates yellow indicator lamp in the east bright (the tinkle of bells does not ring), starts dolly, and edge point is moving eastwards travels.
Before the control method and control system thereof of application the utility model vertical shaft grab bucket elevator system safety, relevant construction project department equipment portion should specifically formulate hoisting and hanging job standardization administrative manual according to method and system device of the present utility model, define job site and need lifting operation standard and the requirement of all kinds of article and the material of lifting operation, operation driver, signal command personnel, give training after study, then carry out execute-in-place and application; For example, for ease of getting in touch with up and down communication signal, construction project department is according to the intercom of on-the-spot actual demand configuration dimension model, give respectively hoisting equipment operation driver, signal command personnel configure each of intercom, each of charger, the secondary operation driver of adapted battery 2, signalman are responsible for keeping, after project is completed, give back construction project department.By the control method of the utility model vertical shaft grab bucket elevator system safety and the application of control system thereof, can make the man-machine cooperation that is more prone to reach, can fully stop any hoisting and hanging operation in job site and operate against regulations and commander; And related each part device can repeat along with the transfer of hoisting equipment to install and use in the control system of the utility model elevator system safety, when improving coefficient of safety, also saved cost, avoided building the wasting of resources of fixture; Easy operating and commanding grasp and skilled use fast, effectively solved the security hidden trouble that existing grab bucket elevator system operation exists, and cost is low, can repeat to recycle, be easy to maintenance, for the safety work of grab bucket elevator system provides abundant guarantee; The accident that effectively prevented occurs, and guarantees the safe and reliable operation of hoisting equipment, is suitable for applying in the field of the association area application hoisting machinery systems such as Urban Metro Construction.
The utility model is not limited to above-mentioned execution mode, those of ordinary skills make to any apparent improvement of above-mentioned execution mode or change, can not exceed the protection range of design of the present utility model and claims.
Claims (6)
1. the control system of vertical shaft grab bucket elevator system safety, described vertical shaft grab bucket elevator system is the grab bucket elevator system of the hoisting equipment of operation in vertical shaft, described grab bucket elevator system comprises the overhead traveling crane of operating room and lifting, it is characterized in that: described control system comprises video monitoring apparatus, described video monitoring apparatus comprises video camera, image splitter and the monitor being connected by video line; Described video camera is fixed on by bracket on the borehole wall of vertical shaft, and described bracket and described video camera are bolted connection; Described monitor is installed in operating room, be arranged in operating room just above and be oppositely arranged with operating room driver driving seat; Described image splitter is connected with video camera with described monitor respectively by video line.
2. the control system of vertical shaft grab bucket elevator system safety as claimed in claim 1, is characterized in that: described control system also comprises communication and command device and grab bucket elevator system direction of travel and safety reminding device; Described communication and command device is used for commanding controls described video monitoring apparatus and grab bucket elevator system direction of travel and safety reminding device.
3. the control system of vertical shaft as claimed in claim 2 grab bucket elevator system safety, it is characterized in that: described grab bucket elevator system direction of travel and safety reminding device comprise operating grip switch and by display lamp and alarm bell and the Alarm bell's switch of its control, described operating grip switch is along shaft wall cable installation in pipe, described Alarm bell's switch is arranged in operating room, is positioned at driver driving seat one side; Described display lamp and alarm bell are arranged on vertical shaft, are positioned at the offside of operating room; Described operating grip switch and Alarm bell's switch are controlled by described communication and command device commander.
4. the control system of vertical shaft grab bucket elevator system safety as claimed in claim 1, is characterized in that: described bracket is fixed on shaft wall by expansion bolt; Monitor is fixedly installed in operating room with bolt.
5. the control system of vertical shaft as claimed in claim 1 grab bucket elevator system safety, it is characterized in that: described video line association is distributed on overhead traveling crane below and shaft wall, by pvc pipe, lay, by U-shaped pipe clamp, be fixed on shaft wall, along shaft wall, lay to video camera place, be connected with video camera;
Described video line by operating room bore a hole into, with trunking plate, lay, be connected with described monitor, centre installs described image splitter additional;
Steel wire rope is set up at two ends at overhead traveling crane walking track, and on described steel wire rope, interval hangs stainless steel pulley, and described video line passes and is added in the pulley hole place of described stainless steel pulley, and is fastened with insulating tape.
6. the control system of vertical shaft grab bucket elevator system safety as claimed in claim 1, is characterized in that: when the transverse passage-way of vertical shaft is 4 layers, described image splitter is 4 image splitters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651724.3U CN203492152U (en) | 2013-10-22 | 2013-10-22 | Control system for vertical shaft grab bucket lifting system safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320651724.3U CN203492152U (en) | 2013-10-22 | 2013-10-22 | Control system for vertical shaft grab bucket lifting system safety |
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| CN203492152U true CN203492152U (en) | 2014-03-19 |
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| CN201320651724.3U Expired - Fee Related CN203492152U (en) | 2013-10-22 | 2013-10-22 | Control system for vertical shaft grab bucket lifting system safety |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517043A (en) * | 2013-10-22 | 2014-01-15 | 中铁隧道集团二处有限公司 | Safety control method for vertical shaft grab bucket hoisting system and control system of same |
-
2013
- 2013-10-22 CN CN201320651724.3U patent/CN203492152U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517043A (en) * | 2013-10-22 | 2014-01-15 | 中铁隧道集团二处有限公司 | Safety control method for vertical shaft grab bucket hoisting system and control system of same |
| CN103517043B (en) * | 2013-10-22 | 2017-12-26 | 中铁隧道集团二处有限公司 | The control method and its control system of vertical shaft grab bucket lifting system safety |
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Granted publication date: 20140319 Termination date: 20171022 |
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| CF01 | Termination of patent right due to non-payment of annual fee |