CN103395416A - Double-air-channel rotation braking safety detector for gantry cranes - Google Patents
Double-air-channel rotation braking safety detector for gantry cranes Download PDFInfo
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- CN103395416A CN103395416A CN2013103242347A CN201310324234A CN103395416A CN 103395416 A CN103395416 A CN 103395416A CN 2013103242347 A CN2013103242347 A CN 2013103242347A CN 201310324234 A CN201310324234 A CN 201310324234A CN 103395416 A CN103395416 A CN 103395416A
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Abstract
The invention provides a double-air-channel rotation braking safety detector for gantry cranes. The double-air-channel rotation braking safety detector comprises a foot valve fixed on the floor of the cab through bolts. One end of the foot valve is connected to an air pressure testing device, and the other end thereof is connected to a pipeline for braking. One end of the pipeline is connected with an air compressor, and the other end thereof is in parallel connection with two other pipelines, wherein one pipeline is connected with a first booster, a first pressure switch and a first braking cylinder in sequence through an oil pipe, and the other pipeline is connected with a second booster, a second pressure switch and a second braking cylinder in sequence through another oil pipeline. A programmable logic controller for performing control instructions is arranged in a machine room to have the two pipelines controlled. The double-air-channel rotation braking safety detector has the advantages that the safety detector is rapid in braking, convenient to operate, safe and reliable and high in efficiency; during operation, a rotating mechanism can be braked immediately right after a driver steps slightly on a foot switch, and goods are suspended above the placement of the same; the double-air-channel rotation braking safety detector is available to other port facilities, and has promising application prospect.
Description
Technical field
The present invention relates to a kind of protective device for crane, particularly a kind of two gas circuit rotation brake safety checkers of span winch that prevent the brake equipment et out of order.
Background technology
Due to gantry crane rotating mechanism, adopt the brake mode of air assisted-hydraulic brake more.Be rotated need to stop the rotation the time handling high pedestal jib crane, real-time inertia due to equipment, equipment can still continue to slide by former hand of rotation, the driver need, by stepping master brake cylinder (foot valve), promote brake cylinder via work-saving device (pneumatic assistor) and drive drg pull bar enforcement braking this moment.Particularly when hoisting crane align goods yard wait for pluck/while hanging goods, rotary mechanism of crane will be in braking mode, meets the intact just even more important of strong wind weather brake equipment more than three grades.Because brake equipment is comprised of source of the gas, foot-operated air valve, gas circuit, assistor, oil circuit, hydraulic cavities, piston, sealing member etc., in use procedure can rotating mechanism brake cylinder oil leakage phenomenon appear because of wearing and tearing, can't guarantee enough brake-pressures.If in the job run process, the driver fails in time to find, will cause collision case because of brake failure, or even even more serious goods damage or casualty accident, be eager to develop the protector after the rotation brake system occurs extremely for this reason, stop the brake failure accident.
Summary of the invention
For solving the problem that exists in above-mentioned technology, the purpose of this invention is to provide the two gas circuit rotation brake safety checkers of a kind of span winch, be beneficial to the generation of protecting crane facility and avoiding casualty accident; This pair gas circuit rotation brake safety checker is effectively controlled the damage of rotating mechanism and steel structure, avoids the collision case that causes because of brake failure, and even more serious goods damage or casualty accident.
For achieving the above object, technical solution of the present invention is to provide the two gas circuit rotation brake safety checkers of a kind of span winch, the rotation brake system is installed in the machine room on rotary turnplate top, foot valve is installed in driver's cab, this detector is installed on swing brake I, the swing brake II on rotary decelerator top in machine room, and wherein: this safety checker comprises the foot valve that is secured by bolts in place, driver's cab floor, and by support, is fixed in normally closed some approach switch of the other conducting when foot valve depresses of foot valve; Described foot valve one end connects gas pressure detection unit, the other end is connected on the pipeline of braking tracheae, one end of pipeline is connected with Air compressor, the other end of pipeline connects two pipelines side by side, one tunnel is the first assistor, the first pressure switch, the first brake cylinder that connects by oil pipe successively, and another road is the second assistor, the second pressure switch, the second brake cylinder that connects by oil pipe successively; In described machine house, be provided be used to carrying out the Programmable Logic Controller of control command, described two pipelines are controlled;
The gas pressure detection contact normally closed switch of described gas pressure detection unit cuts off after approach switch is connected with rotation brake the load module that accesses Programmable Logic Controller, the first pressure switch that detects the brake fluid pressure oil pressure is loaded on the oil pipe in the first assistor exit, for detection of outlet brake fluid pressure oil pressure, the load module of this pressure switch contact access Programmable Logic Controller; When system pressure did not reach setting pressure, opened the gas pressure detection unit contact, cuts off Rotable Control System, and send warning, and this moment, hoisting crane can't rotate; When air pressure reaches preset pressure, the gas pressure detection unit closing of contact, it is normal that Rotable Control System recovers, and warning automatically terminates; When stepping on foot valve, pressurized air in air compressor enters in the first assistor, pneumatic piston promotion hydraulic piston in the first assistor, the second assistor is pushed braking liquid in the first brake cylinder, the second brake cylinder, thereby in the drive machine room, swing brake I, the swing brake II on rotary decelerator top are held this safety checker tightly.
Effect of the present invention is: two gas circuit rotary system brakings rapidly, operate light, safe and reliable.In actual job, the driver only need gently step on foot-operated switch, just can brake immediately rotating mechanism, makes goods hover over the putting position top.Driver's efficiency when putting goods is higher, does not need repeatedly to adjust.
After adding this safety checker, the driver can monitor the running state of rotation brake system intuitively in the door machine operation.In time find the abnormal condition of brake system, effectively the generation of Accident prevention.In actual the use, the driver is reflected well.This overlaps the accident that can effectively prevent the rotary system insufficient pressure and cause of installing and using of safety checker, and reliability reaches 100%.And simple in structure being convenient to installed, and be practical, and the operating personal reflection is quite reliable.Often avoid the device damage after brake failure one time, can save the fund of several thousand yuan of units even up to ten thousand, also do not comprise parking charge, repair expense and other indirect loss and causality loss etc.Port enterprise operation situation complexity, what control safety misadventure is one of most important work of port equipment management.In port enterprise, use the equipment of air pressure-oil brake to have a lot.This pressure security detector also can be applicable on the special equipment of other harbor accommodation or other industry, and application prospect is very extensive.
The accompanying drawing explanation
Fig. 1 is the two gas circuit rotation brake safety checker principle schematic of span winch of the present invention;
Fig. 2 is safety interlock trace routine of the present invention;
Fig. 3 is program output point correlative of the present invention.
In figure:
1, gas pressure detection unit 2, foot valve 3, normally closed some approach switch 4, tracheae 5, the first assistor 5 ', the second assistor 6, the first pressure switch 6 ', the second pressure switch 7, oil pipe 8, the first brake cylinder 8 ', the second brake cylinder 9, the first drg 9 ', second brake 10, air compressor
The specific embodiment
By reference to the accompanying drawings the two gas circuit rotation brake safety checker structures of span winch of the present invention and course of action are illustrated.
As shown in Figure 1, the two gas circuit rotation brake safety checkers of hoisting crane of the present invention, the rotation brake system of hoisting crane is installed in the machine room on rotary turnplate top, foot valve is installed in driver's cab, this detector is installed on swing brake I 9, swing brake II 9 ' front end pipeline on rotary decelerator top in machine room, and this safety checker comprises the foot valve 2 that is secured by bolts in place, driver's cab floor, and by support, is fixed in normally closed some approach switch 3 of foot valve 2 other conductings when foot valve 2 depresses; Described foot valve 2 one ends connect gas pressure detection unit 1, the other end is connected on the pipeline of braking tracheae 4, one end of pipeline is connected with Air compressor 10, the other end of pipeline connects two pipelines side by side, one tunnel is the first assistor 5, the first pressure switch 6, the first brake cylinder 8 that connects by oil pipe 7 successively, another road be the second assistor 5 of connecting by oil pipe 7 successively ', the second pressure switch 6 ', the second brake cylinder 8 '; In described machine house, be provided be used to carrying out the Programmable Logic Controller of control command, described two pipelines are controlled;
The gas pressure detection contact normally closed switch of described gas pressure detection unit 1 cuts off after approach switch 3 is connected with rotation brake the load module that accesses Programmable Logic Controller, the first pressure switch 6 that detects the brake fluid pressure oil pressure is loaded on the oil pipe 7 in the first assistor 5 exits, for detection of outlet brake fluid pressure oil pressure, the load module of this pressure switch contact access Programmable Logic Controller; When system pressure did not reach setting pressure, opened gas pressure detection unit 1 contact, cuts off Rotable Control System, and send warning, and this moment, hoisting crane can't rotate; When air pressure reaches preset pressure, gas pressure detection unit 1 closing of contact, it is normal that Rotable Control System recovers, and warning automatically terminates; When stepping on foot valve 2, pressurized air in air compressor 10 enters in the first assistor 5, make the first assistor 5, the second assistor 5 ' in pneumatic piston promote hydraulic piston by braking liquid push the first brake cylinder 8, the second brake cylinder 8 ' in, thereby drive swing brake I 9, the swing brake II 9 ' hold tightly on rotary decelerator top in machine room.
This safety checker comprises Programmable Logic Controller, be secured by bolts in the other nearly switch 3 of rotary cutting disconnecting of foot valve 2, be threaded connection the gas pressure detection contact on brake piping and be positioned at first pressure switch 6 in the first assistor 5 exits, be positioned at second pressure switch 6 in second assistor 5 ' exit '.Described gas pressure detection contact normally closed switch is installed in gas pressure detection unit 1, this switch is the input Programmable Logic Controller of connecting with rotation brake cut-out approach switch 3, does not open its contact when system pressure reaches setting pressure or depresses foot valve 2, cut off Rotable Control System, and send warning, this moment, hoisting crane can't rotate; When air pressure reaches preset pressure, this closing of contact, it is normal that Rotable Control System recovers, and warning automatically terminates, and the driver can operate rotating mechanism and carry out the left/right rotation.
As shown in Figure 2 and Figure 3, when the driver steps on foot valve 2, rotation brake cuts off approach switch 3 and is loaded on first pressure switch 6 for detection of outlet brake fluid pressure oil pressure in the first assistor 5 exits and is loaded on second pressure switch 6 for detection of outlet brake fluid pressure oil pressure in second assistor 5 ' exit ' while to the Programmable Logic Controller input electrical signal, when pressure reaches the preset value of switch, contact in switch will be connected, and Programmable Logic Controller will be received this electric signal; In driver's cab, rotation foot valve 2 is responsible for controlling whole brake system.When the driver steps on foot valve 2, the pressurized airs in Air compressor 10 enter simultaneously the first assistor 5 and the second assistor 5 ' in.The first assistor 5, the second assistor 5 ' in pneumatic piston promote hydraulic piston by braking liquid be pushed into the first brake cylinder 8 and the second brake cylinder 8 ', thereby driven rotary drg I 9, swing brake II 9 ' hold tightly.
The approach switch 3 of foot valve 2 belows connects normally closed point, the first pressure switch 6, the second pressure switch 6 ' connect normal battle.When the door machine is being treated man-hour, in program, the normally closed point of IB010E6 meets, and meet the normal battle of IB010E5, two not conductings of loop of coil MB050014 and MB050015, and system is not reported to the police, but the rotating mechanism normal running.
If the insufficient pressure of the first drg wheel cylinder 8, the normally closed point of IB010E6 and IB010E5 satisfies condition, relay coil MB050014 loop conducting.Meet this moment normal battle of MB050014, output point OB018044 energising.Output point OB018044 controls buzzer phone and alarm lamp is reported to the police, and reminds driver's brake system pressure abnormal.If the driver does not step on the pedal brake switch, but system has detected the first assistor 5, Output pressure is arranged, this moment, system can be reported to the police, and reminded the driver to check brake system, and time delay cuts off Rotable Control System after 15 seconds, and this moment, hoisting crane can't rotate.Equally, if second brake cylinder 8 ' internal pressure is abnormal, corresponding buzzer phone and alarm lamp also can be reported to the police.
After the driver stepped on foot valve 2, if the brake system internal pressure is normal, the normally closed point of IB010E6 met, and the normally closed point of IB010E5 does not meet; Meet the normal battle of IB010E6, and do not meet the normal battle of IB010E5; Coil MB050014 place not conducting of loop this moment, system can not reported to the police.Buzzer phone and alarm lamp that coil MB050015 controls can not reported to the police yet.
After the driver unclamps foot valve 2, the first assistor 5, the second assistor 5 ' separated with Air compressor 10 storage tanks.The first assistor 5, the second assistor 5 ' interior high pressure air are emitted from foot valve 2.The first brake cylinder 8, second brake cylinder 8 ' piston reset under the effect that carries pull back spring, swing brake I 9, swing brake II 9 ' unclamp.In control program, each address points returns to the state for the treatment of man-hour.If this moment, pressure did not discharge, meet the normal battle of IB010E6 and IB010E7, meet the normal battle of IB010E5.The loop conducting of coil MB050014 and MB050015 at this moment.System alarm, remind the driver that system does not have hold-off pressure after braking, should in time overhaul, and time delay cuts off Rotable Control System after 15 seconds, and this moment, hoisting crane can't rotate.
After the driver lifted pin, assistor and compressed air reservoir were separated.High pressure air in assistor is emitted from foot valve.Piston resets under the effect that carries pull back spring, releasing of brake.In control program, each address points returns to the state for the treatment of man-hour.If this moment, pressure did not discharge, meet the normal battle of IB010E6 and IB010E7, meet the normal battle of IB010E5.The loop conducting of coil MB050014 and MB050015 at this moment.System alarm, remind driver's system after braking, there is no hold-off pressure, should in time overhaul.
The M16-33/25-24 high pedestal jib crane of producing take PORT OF SHANGHAI machine factory, as embodiment, before the rotation brake safety detecting system is not installed, uses twice brake failure in 5 middle of the month, and badly damaged jib gooseneck boom assembly pulley, danger wine personal injury accident.After having installed and used the two gas circuit rotation brake safety checkers of hoisting crane, to have tested and used 11 months nearly, any machinery that causes because rotation brake is malfunctioning, cargo damage accident do not occur in 6 hoisting cranes again.In use, the problem that too much time hydraulic efficiency pressure system is revealed, source of the gas is lost has occurred according to driver's reflection, and hydraulic efficiency pressure system is revealed, source of the gas lose after the two gas circuit rotation brake safety checkers of hoisting crane by main in driver's cab, make on control desk, install two with the buzzer warning lamp, correspondence is not enough corresponding light and with the buzzing chimes of doom of line pressure separately, reaches that setting after 15 second time comes into force and cut off rotation to control output.The driver hear report to the police after the goods that will sling of former preparation check again after putting well, but found rotating mechanism operation attonity, with being about to after goods lands to carry out the locomotive inspection, found left side rotation brake wheel cylinder leakage of oil, exactly because the two gas circuit rotation brake safety checkers of hoisting crane detect not mating of output command and feedback signal, thereby cut off the output of whole rotating mechanism, driver's hand Screw braking handwheel that loses no time immediately, Accident prevention occurs.Keep in repair simultaneously, make brake system recover normal use, avoided the accident generation.
Claims (1)
1. two gas circuit rotation brake safety checkers of a span winch, the rotation brake system is installed in the machine room on rotary turnplate top, foot valve is installed in driver's cab, this detector is installed on swing brake I (9), swing brake II (9 ') the front end pipeline on rotary decelerator top in machine room, it is characterized in that: this safety checker comprises the foot valve (2) that is secured by bolts in place, driver's cab floor, and is fixed in the other normally closed some approach switch (3) in foot valve (2) conducting while depressing of foot valve (2) by support; Described foot valve (2) one ends connect gas pressure detection unit (1), the other end is connected on the pipeline of braking tracheae (4), one end of pipeline is connected with Air compressor (10), the other end of pipeline connects two pipelines side by side, one tunnel is the first assistor (5), the first pressure switch (6), the first brake cylinder (8) that connects by oil pipe (7) successively, and another road is the second assistor (5 '), the second pressure switch (6 '), the second brake cylinder (8 ') that connects by oil pipe (7) successively; In described machine house, be provided be used to carrying out the Programmable Logic Controller of control command, described two pipelines are controlled;
The gas pressure detection contact normally closed switch of described gas pressure detection unit (1) cuts off after approach switch (3) is connected with rotation brake the load module that accesses Programmable Logic Controller, the first pressure switch (6) that detects the brake fluid pressure oil pressure is loaded on the oil pipe (7) in the first assistor (5) exit, for detection of outlet brake fluid pressure oil pressure, the load module of this pressure switch contact access Programmable Logic Controller; When system pressure did not reach setting pressure, opened gas pressure detection unit (1) contact, cuts off Rotable Control System, and send warning, and this moment, hoisting crane can't rotate; When air pressure reaches preset pressure, gas pressure detection unit (1) closing of contact, it is normal that Rotable Control System recovers, and warning automatically terminates; When stepping on foot valve (2), pressurized air in air compressor (10) enters in the first assistor (5), pneumatic piston promotion hydraulic piston in the first assistor (5), the second assistor (5 ') is pushed braking liquid in the first brake cylinder (8), the second brake cylinder (8 '), thereby in the drive machine room, swing brake I (9), the swing brake II (9 ') on rotary decelerator top are held tightly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310324234.7A CN103395416B (en) | 2013-07-29 | 2013-07-29 | Double-air-channel rotation braking safety detector for gantry cranes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310324234.7A CN103395416B (en) | 2013-07-29 | 2013-07-29 | Double-air-channel rotation braking safety detector for gantry cranes |
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| CN103395416A true CN103395416A (en) | 2013-11-20 |
| CN103395416B CN103395416B (en) | 2015-06-17 |
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| CN201310324234.7A Active CN103395416B (en) | 2013-07-29 | 2013-07-29 | Double-air-channel rotation braking safety detector for gantry cranes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488275A (en) * | 2018-03-27 | 2018-09-04 | 张家港港务集团有限公司港盛分公司 | Improve the remodeling method and reconstruction structure of door machine rotary braking reliability |
| CN112433517A (en) * | 2019-08-26 | 2021-03-02 | 宝山钢铁股份有限公司 | Fault diagnosis and alarm method for rail wheel brake system of port machine |
| CN115214592A (en) * | 2022-07-13 | 2022-10-21 | 北京主导时代科技有限公司 | Rail vehicle brake detection device |
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| CN1220966A (en) * | 1997-12-23 | 1999-06-30 | 高元书 | Windbreak anchoring method for crane |
| CN2504157Y (en) * | 2001-07-02 | 2002-08-07 | 温州市液压件厂 | Hydraulic multiroute valve of crane truck |
| EP1270358A2 (en) * | 2001-06-29 | 2003-01-02 | The Raymond Corporation | Method and apparatus for limiting truck speed as a function of braking |
| CN1632491A (en) * | 2004-12-28 | 2005-06-29 | 武汉理工大学 | Indoor test and detection device for wind proof safety brake of port crane |
| CN201272340Y (en) * | 2008-08-14 | 2009-07-15 | 陈庆桐 | hydraulic motor brake circuit |
| CN201901130U (en) * | 2010-12-13 | 2011-07-20 | 徐州重型机械有限公司 | Crane and brake system thereof |
| CN203450124U (en) * | 2013-07-29 | 2014-02-26 | 天津港第一港埠有限公司 | Double-air-circuit rotary braking type safety detector for gantry crane |
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2013
- 2013-07-29 CN CN201310324234.7A patent/CN103395416B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220966A (en) * | 1997-12-23 | 1999-06-30 | 高元书 | Windbreak anchoring method for crane |
| EP1270358A2 (en) * | 2001-06-29 | 2003-01-02 | The Raymond Corporation | Method and apparatus for limiting truck speed as a function of braking |
| CN2504157Y (en) * | 2001-07-02 | 2002-08-07 | 温州市液压件厂 | Hydraulic multiroute valve of crane truck |
| CN1632491A (en) * | 2004-12-28 | 2005-06-29 | 武汉理工大学 | Indoor test and detection device for wind proof safety brake of port crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488275A (en) * | 2018-03-27 | 2018-09-04 | 张家港港务集团有限公司港盛分公司 | Improve the remodeling method and reconstruction structure of door machine rotary braking reliability |
| CN112433517A (en) * | 2019-08-26 | 2021-03-02 | 宝山钢铁股份有限公司 | Fault diagnosis and alarm method for rail wheel brake system of port machine |
| CN112433517B (en) * | 2019-08-26 | 2022-06-28 | 宝山钢铁股份有限公司 | Fault diagnosis and alarm method for rail wheel brake system of port machine |
| CN115214592A (en) * | 2022-07-13 | 2022-10-21 | 北京主导时代科技有限公司 | Rail vehicle brake detection device |
| CN115214592B (en) * | 2022-07-13 | 2024-05-10 | 北京主导时代科技有限公司 | Rail vehicle brake detection device |
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| CN103395416B (en) | 2015-06-17 |
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