CN103613017B - Tower crane lifting alliance state online monitoring system and method for supervising - Google Patents

Tower crane lifting alliance state online monitoring system and method for supervising Download PDF

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Publication number
CN103613017B
CN103613017B CN201310662086.XA CN201310662086A CN103613017B CN 103613017 B CN103613017 B CN 103613017B CN 201310662086 A CN201310662086 A CN 201310662086A CN 103613017 B CN103613017 B CN 103613017B
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China
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jacking
detecting
stock
dismounting
quit
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CN103613017A (en
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高诚
李斌
赵鹏华
陶鑫
曲大勇
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Liaoning Safety Science Institute
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Liaoning Safety Science Institute
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Abstract

A kind of tower crane lifting alliance state on-line monitoring method, it is characterized in that: send handling signal to PLC by system, control crane lifting system jacking or dismounting, by jacking stock degree of dip detecting device, anti-roof fall detecting device and on, under quit and to detect respectively with regard to level detecting apparatus and to send signal, after testing, each position is all normal, start jacking or dismounting, if certain detecting device transfinites, PLC controls warning device and sends sound and light alarm, stop jacking or dismounting, until deal with problems, continue jacking or dismounting, after jacking or dismounting action complete smoothly, each several part resets, complete a working cycle.The present invention has filled up the blank that domestic tower crane peace tears process monitoring technique open, tower crane is made to have fault-tolerant ability in jacking and unloading process, improve the intelligent level of tower crane lifting and dismounting, effectively can prevent tower crane lifting and unloading process generation grave accident, there is very large actual application value.

Description

Tower crane lifting alliance state online monitoring system and method for supervising
Technical field
The present invention relates to a kind of tower crane lifting alliance state online monitoring system and method for supervising.
Background technology
Tower crane is at lifting guide support adding and fall tower and unload in joint process and happen occasionally because great human casualty accident occurs human operational error, and hook of wherein quitting is not in place, the skew of jacking stock over-tilting, boom position is excessive and the roof fall of jacking stock is the major cause causing having an accident.Therefore, exploitation tower crane peace tears jacking stock location status safety monitoring system in process open becomes the task of top priority.
Summary of the invention
For the technical matters of above-mentioned existence, the invention provides a kind of tower crane lifting alliance state online monitoring system and the method for supervising with intelligent monitoring ability, real time on-line monitoring jacking stock is at lifting guide support adding and fall tower and unload location status in joint process, the work information of accurate reflection jacking stock, carries out direct actv. monitoring to the safe condition of tower crane lifting stock.
The technical solution adopted for the present invention to solve the technical problems is:
This monitored control system take PLC as the core of Monitoring and Controlling, is made up of parts such as the sensing device of image data, operating control, warning device and s.The sensing device of image data comprises boom position detecting device, jacking stock degree of dip detecting device, quits with regard to level detecting apparatus, anti-roof fall detecting device, jacking cylinder device for detecting distance of travel up and down.Wherein, the sensing device of image data utilizes selected sensor to gather the jacking status information of tower crane lifting stock, and the information transmission collected is carried out calculation process to control core PLC.Undertaken analyzing by PLC control core and judge that tower crane peace tears the location status of jacking stock in process open, and send to, realize controlling and the Monitoring and Controlling of warning function in one.
Tower crane lifting alliance state on-line monitoring method of the present invention, handling signal is sent to PLC by system, control crane lifting system jacking or dismounting, to be detected respectively with regard to level detecting apparatus by jacking stock degree of dip detecting device, anti-roof fall detecting device and upper and lower quitting and to be sent signal, after testing, until each position is all normal, start jacking or dismounting action, in jacking or unloading process, if each detecting device all works in safe range, continue jacking or dismounting; If a certain detecting device transfinites, PLC controls warning device and sends sound and light alarm, stops jacking or dismounting, until solve warning problem, continues jacking or dismounting, and after jacking or dismounting complete, each several part resets, and completes a working cycle; Wherein:
Jacking stock degree of dip detecting device is measured stock angle of inclination in jacking or unloading process and whether is exceeded regulation safety value, if the angle of inclination measured is greater than safety value, then send alerting signal, carry out sound and light alarm, jacking or unloading process will stop immediately, until after dealing with problems manually, continue jacking or dismantlement work;
Anti-roof fall detecting device detects the whether roof fall of jacking stock, when the distance of end face is less than regulation safety distance on jacking stock upper guide road wheel distance between center line tower-body standard section time, send alerting signal, carry out sound and light alarm, jacking cylinder stops jacking work, can only decline; Until the time in that the distance of end face being more than or equal to regulation safety distance on jacking stock upper guide road wheel distance between center line tower-body standard section, continue jacking or dismantlement work;
Upper and lower quit to detect respectively with regard to level detecting apparatus upper and lowerly whether accurately in placely quit, as in place inaccurate, system then sends alerting signal, carries out sound and light alarm; In place accurate time, continue jacking or dismantlement work;
Boom position detecting device detects whether crane arm be in can in jacking position range, and if not, then system sends alerting signal, carries out sound and light alarm, stops jacking or dismantlement work; If so, jacking or dismantlement work is continued;
During warning, PLC controls jacking cylinder and stops action.
Further, comprise PLC, the sensing device of image data, manoeuvring platform, telltale and annunciator, described sensing device comprises jacking stock degree of dip detecting device, anti-roof fall detecting device, on, under quit with regard to level detecting apparatus and boom position detecting device, described PLC, manoeuvring platform and are arranged in casing, be placed on tower crane lifting cover body panel, sensing device and warning device are installed on tower crane lifting stock and rotary table, manoeuvring platform, each detecting device is connected with PLC respectively, PLC mouth connects annunciator and indicator lamp respectively.
Further, described jacking stock degree of dip detecting device is double-shaft tilt angle sensor, this double-shaft tilt angle sensor is arranged on the main limb of jacking stock, gathers the inclination angle signal in jacking stock jacking process and be transferred to PLC by double-shaft tilt angle sensor.
Further, described anti-roof fall detecting device comprises two groups of feedback reflective photoelectric sensors, the reflecting optics of feedback reflective photoelectric sensor and the paired linea angulata direction of opto-electronic pickup, be installed on the web member of left of jacking stock jacking framework upper and rear panel respectively, and on the web member of left and right, the status requirement of the laser beam wherein between reflecting optics I and opto-electronic pickup: during final step jacking, on jacking stock top tumbler line of centers and the main limb of tower-body standard section, end face is reserved with safety distance, ensures that jacking stock can not roof fall.
Further, described upper and lower quitting comprises two groups of correlation type opto-electronic pickups respectively with regard to level detecting apparatus, on quit with regard to level detecting apparatus respectively symmetry be arranged on the main limb of jacking stock rear panel and web member, on quit hook in place time, the laser beam between correlation type opto-electronic pickup transmitting terminal and receiving end is through the steel plate through hole with holes of lower end welding of above quitting; Under quit with regard to level detecting apparatus respectively symmetrical be arranged on stock rear panel web member and under quit on, under quit hook in place time, the laser beam of correlation type opto-electronic pickup is through the through hole on bent plate II.
Further, jacking stock rear panel jacking cross beam lower surface is provided with jacking cylinder device for detecting distance of travel, and this device is laser rangefinder, and laser rangefinder is to the collapsing length of lifting beam upper surface Emission Lasers radionetric survey jacking cylinder.
Further, described boom position is detected as one group of feedback reflective photoelectric sensor, is installed on respectively on upper and lower turn table apparent surface.
Further, the installation length of described feedback reflective photoelectric sensor reflecting optics is arranged relative to turn table central angle ± 5 °.
The invention has the beneficial effects as follows:
1. the present invention has filled up the blank that domestic tower crane peace tears process monitoring technique open, tower crane is made to have fault-tolerant ability in jacking and unloading process, improve the intelligent level of tower crane lifting and dismounting, effectively can prevent tower crane lifting and unloading process generation grave accident, there is very large actual application value.
2. the present invention is provided with the monitoring sensor of difference in functionality on the jacking stock of tower crane, gather jacking stock by sensor and pacify the signal tearing location status in process open at tower crane, and be transferred to PLC, the security monitoring that tower crane peace tears process open can be realized.
3. the present invention has the anti-roof fall measuring ability of jacking stock and jacking cylinder stroke detection function, and both all can effectively prevent from tower crane from tearing open in process in peace occurring jacking stock roof fall phenomenon, form anti-roof fall double insurance effect.
4. this checking system has boom position measuring ability, can effectively avoid tower crane to cause the excessive phenomenon of additional bending moment because boom position angular deflection is excessive in jacking and unloading process, ensures that boom position is in safe range all the time.
5. this checking system has jacking stock degree of dip measuring ability, gather jacking stock degree of dip signal by double-shaft tilt angle sensor, effectively preventing tower crane from occurring in jacking and unloading process, jacking stock degree of dip is excessive and produce excessive additional bending moment problem.
Accompanying drawing explanation
Fig. 1 is monitoring system overall installation position view of the present invention.
Fig. 2 is boom position detecting device installation site schematic diagram in the present invention.
Fig. 3 is jacking stock degree of dip detecting device enlarged diagram in Fig. 1.
Fig. 4 is anti-roof fall detecting device schematic diagram in Fig. 1.
Fig. 5 is the A-A cross-sectional schematic of Fig. 1.
Fig. 6 is structure of the detecting device schematic diagram in place of quitting up and down in Fig. 1.
Fig. 7 is that the B of Fig. 6 is to enlarged diagram.
Fig. 8 is the structural representation of Fig. 1 jacking cylinder device for detecting distance of travel.
Fig. 9 is boom position detection architecture schematic diagram in the present invention.
Figure 10 is the C-C cross-sectional schematic of Fig. 9.
Figure 11 is PLC control flow chart of the present invention.
In figure, 1. jacking stock degree of dip detecting device, 101. connecting panel I, 102. tie bolt I, 103. steel plate I, 104. double-shaft tilt angle sensors, 105. tie bolts II;
2. anti-roof fall detecting device, 201. connecting panel II, 202. tie bolt III, 203. reflecting optics I, 204. feedback reflective photoelectric sensors, 205. tie bolt IV, 206. connecting panel III, 207. connecting panel IV, 208. connecting panels V;
3. quit with regard to level detecting apparatus, quit with regard to level detecting apparatus on 31., quit under 32. with regard to level detecting apparatus, 301. main limbs, 302. steel plate II, 303. connecting panels VI, 304. correlation type opto-electronic pickup transmitting terminals, 305. tie bolt V, 306. steel plate with holes, 307. steel plate III, 308. correlation type opto-electronic pickup receiving ends, quit on 309., 310. web member, 311. bent plate I, 312. bent plates are quit for II, 313. times;
4. jacking cylinder device for detecting distance of travel, 401. laser rangefinders, 402. tie bolt VI, 403. connecting panels VII, 404. jacking cross beams;
5. boom position detecting device, 501. connecting panel VIII, 502. reflecting optics II, 503. connecting panels Ⅸ;
6. left, 7. rear panel, 8. right.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1: as Fig. 1, shown in Fig. 2, the present invention includes PLC, the sensing device of image data, manoeuvring platform, telltale and annunciator, described sensing device comprises jacking stock degree of dip detecting device 1, anti-roof fall detecting device 2, on, under quit with regard to level detecting apparatus 31, 32, jacking cylinder device for detecting distance of travel 4 and boom position detecting device 5, described PLC, manoeuvring platform and status displays are arranged in casing, be placed on tower crane lifting cover body panel, sensing device and warning device are installed on tower crane lifting stock and rotary table, manoeuvring platform, each detecting device is connected with PLC input end respectively, PLC mouth connects annunciator and indicator lamp respectively.
As shown in Figure 1 and Figure 2, described jacking stock degree of dip detecting device 1 is arranged on the main limb of jacking stock rear panel; Anti-roof fall detecting device 2 is two groups, is arranged on outside the main limb of jacking stock respectively; On quit with regard to level detecting apparatus 31 to be two groups, to be arranged on the main limb of jacking stock rear panel and web member respectively, under to quit with regard to level detecting apparatus 32 be two groups, be arranged on the web member of stock rear panel and jacking quit; Jacking cylinder device for detecting distance of travel 4 is installed on the lower surface of jacking stock rear panel jacking cross beam; Boom position detecting device 5 is one group, is installed on respectively on upper and lower turn table apparent surface.
As shown in Figure 3, described jacking stock degree of dip detecting device 1, primary responsibility gathers the signal at jacking stock angle of inclination in tower crane assembling and dissembling process, and is analyzed to PLC by the Signal transmissions collected.Jacking stock degree of dip detecting device 1 comprises two pieces of connecting panels I 101, tie bolt I 102, steel plate I 103, double-shaft tilt angle sensor 104 and tie bolt II 105, double-shaft tilt angle sensor 104 is fixed on steel plate I 103 by tie bolt II 105, steel plate I 103 and wherein one piece of connecting panel I 101 weld together, form a double-shaft tilt angle sensor stand apparatus.Another block connecting panel I 101 is welded on the main limb of jacking stock, whole stand apparatus and the connecting panel I 101 be welded on the main limb of jacking stock is fixed together by tie bolt I 102.When jacking stock tilts due to unbalanced moment, double-shaft tilt angle sensor 104 detects the angle of level and vertical direction, passes to PLC.Stock angle of inclination in jacking or unloading process can be measured by this detecting device and whether exceed regulation safety value, if the angle of inclination measured is greater than safety value, then send alerting signal, carry out sound and light alarm, jacking or unloading process will stop immediately, until by artificial by Resolving probiems, jacking or dismantlement work could be continued.
As shown in Figure 4, Figure 5, described is the anti-roof fall detecting device 2 of tower crane, comprise two groups of feedback reflective photoelectric sensors, diagonally line position is installed, be installed on the web member of jacking stock jacking framework upper left 6 and rear panel 7 respectively, and on the web member of left 6 and right 8, the status requirement of the laser beam wherein between reflecting optics I 203 and opto-electronic pickup 204: during final step jacking, on jacking stock top tumbler line of centers and the main limb of tower-body standard section, end face is reserved with safety distance, ensures that jacking stock can not roof fall.Two groups of feedback reflective photoelectric sensors are responsible for detecting the distance in tower crane lifting or unloading process on jacking stock guide wheel line of centers and tower-body standard section between end face, and are analyzed to PLC by the Signal transmissions collected.
The anti-roof fall detecting device 2 of tower crane comprises connecting panel II 201, tie bolt III 202, reflecting optics I 203, feedback reflective photoelectric sensor 204, two tie bolts IV 205, connecting panel III 206, connecting panel IV 207 and connecting panels V 208, as shown in Figure 3, reflecting optics I 203 is fixed together by tie bolt III 202 and the connecting panel II 201 be welded on jacking stock left 6 web members; Feedback reflective photoelectric sensor 204 is fixed together by tie bolt IV 205 and the connecting panel III 206 be welded on jacking stock rear panel 7 web member.So namely, define wherein one group of feedback reflective photoelectric sensor device.In like manner, another group feedback reflective photoelectric sensor device is installed as follows: connecting panel IV 207 is welded on the web member of jacking stock left 6, and reflecting optics I 203 is fixed together by tie bolt III 202 and connecting panel IV 207; Connecting panel V 208 is welded on the web member of jacking stock right 8, and feedback reflective photoelectric sensor 204 is fixed together by tie bolt IV 205 and connecting panel V 208, defines other one group of feedback reflective photoelectric sensor device.As shown in Figure 4, Figure 5, the reflecting optics I 203 often organized in device is installed in linea angulata direction in pairs with feedback reflective photoelectric sensor 204, is responsible for respectively detecting the distance on tower body diagonal tower-body standard section between end face and jacking stock upper guide road wheel line of centers.During normal jacking work, the laser beam that feedback reflective photoelectric sensor is launched is interdicted by tower-body standard section, and reflecting optics does not receive laser beam.Along with the carrying out of jacking work, when on jacking stock upper guide road wheel distance between center line tower-body standard section, the distance of end face is less than regulation safety distance time, tower-body standard section incites somebody to action no longer blocking laser ray, now feedback reflective photoelectric sensor 204 will receive laser beam by reflecting optics I 203, system sends alerting signal, carries out sound and light alarm, and jacking cylinder stops jacking work, can only decline, effectively can prevent jacking process roof fall phenomenon.
As shown in Figure 6, Figure 7, described tower crane is upper and lower quits and to be made up of upper and lower detecting device 31,32 two parts of quitting with regard to level detecting apparatus 3, every part detecting device includes two groups of correlation type opto-electronic pickups, and symmetry is arranged on the jacking stock rear panel left and right sides respectively.On detecting device 31 of quitting be responsible for detection two is quit 309 whether accurately in place; Under quit to quit under detecting device 32 is responsible for detecting two, bottom and 313 whether be accurately hooked on tower-body standard section and mark time in groove, by the Signal reception between correlation type opto-electronic pickup whether detect upper and lower quit 309,313 whether accurately in place.
Often organize correlation type opto-electronic pickup and be responsible for detection position of quitting, if hook of quitting rear correlation type opto-electronic pickup in place can receive signal smoothly, the complete hook that proves to quit puts in place, otherwise system stalls sound and light alarm.
As shown in Figure 6, described tower crane is quit as follows with regard to mounting means on the left of detecting device that level detecting apparatus 3 is quit up and down: steel plate II 302 to be welded on the left of jacking stock rear panel on main limb 301, connecting panel VI 303 is welded on steel plate II 302, correlation type opto-electronic pickup transmitting terminal 304 is fixed on connecting panel VI 303 by tie bolt V 305, and now the correlation type opto-electronic pickup transmitting terminal of left side detecting device installs; Steel plate III 307 to be welded on the left of jacking stock rear panel on web member 310, connecting panel VI 303 is welded on steel plate III 307, correlation type opto-electronic pickup receiving end 308 is fixed on connecting panel VI 303 by tie bolt V 305, and now the correlation type opto-electronic pickup receiving end in left side installs; Laser beam between correlation type opto-electronic pickup transmitting terminal and receiving end is positioned at quit the lower limit position of 309.Steel plate 306 with holes be welded on left side on to quit 309 lower ends, if the laser beam of correlation type opto-electronic pickup transmitting terminal can arrive correlation type opto-electronic pickup receiving end smoothly by the circular hole of steel plate 306 with holes, quit on the left of proving accurately in place, otherwise system then sends alerting signal, carry out sound and light alarm.On quit parts on the right side of detecting device and mounting means and left side completely the same, positional symmetry is arranged on the right side of jacking stock rear panel, for detect quit in right side whether accurately in place.
As shown in Figure 6, Figure 7, the mounting means that described tower crane is quit on the left of with regard to level detecting apparatus 3 times detecting devices of quitting up and down is as follows: bent plate I 311 to be welded on the left of jacking stock rear panel on web member 310, correlation type opto-electronic pickup transmitting terminal 304 is fixed on bent plate I 311 by tie bolt V 305, and the correlation type opto-electronic pickup transmitting terminal on the left of this detecting device of quitting at present installs; Bent plate II 312 is welded on to quit on 313 under on the left of lower end, correlation type opto-electronic pickup receiving end 308 is fixed on bent plate II 312 by tie bolt V 305, correlation type opto-electronic pickup receiving end on the left of this detecting device of quitting at present installs, under quit 313 hooks in place time, the photoelectricity ray of correlation type opto-electronic pickup is through the through hole on bent plate II 312.Under to quit the completely the same of parts on the right side of detecting device and mounting means and left side, whether positional symmetry is arranged on the right side of jacking stock rear panel, 313 accurately in place for quitting under detecting right side.
After hook of quitting is in place, if the receiving end of each group correlation type opto-electronic pickup all can receive the laser signal that transmitting terminal sends smoothly, proves to quit equal hook up and down accurately, can work on; If the receiving end of certain group correlation type opto-electronic pickup can not receive laser signal, proof is quit and is not in accurate hooking position, system will send alerting signal, carry out sound and light alarm, jacking or dismounting will quit work, until artificial by after Resolving probiems, jacking or dismantlement work can be proceeded.
As shown in Figure 8, jacking cylinder device for detecting distance of travel 4 of the present invention is installed on jacking stock rear panel jacking cross beam lower surface, mainly comprises laser rangefinder 401, tie bolt VI 402 and connecting panel VII 403.Laser rangefinder 401 is fixed on connecting panel VII 403 by tie bolt VI 402, and connecting panel VII 403 is welded on the lower surface of jacking stock rear panel jacking cross beam 404.By the lifting beam Emission Lasers signal of laser rangefinder 401 lower portion, detect the stroke of jacking cylinder, and then avoid jacking process to occur roof fall phenomenon, this jacking cylinder device for detecting distance of travel 4 and the combined action of anti-roof fall detecting device 2, form anti-roof fall double insurance.
As shown in Figure 9, Figure 10, boom position detecting device 5 of the present invention is installed between upper and lower turntable, and feedback reflective photoelectric sensor 204 is fixed on connecting panel VIII 501 by tie bolt IV 205, and connecting panel VIII 501 is welded on the downside of turntable end face; Reflecting optics II 502 is fixed on connecting panel Ⅸ 503 by tie bolt III 202, and connecting panel Ⅸ 503 is welded in the end face surface of lower turntable.The installation length of described feedback reflective photoelectric sensor reflecting optics is arranged relative to turn table central angle ± 5 °; Whether offset excessive, produce additional excessive moment of flexure if can detect boom position, be unfavorable for carrying out smoothly of jacking or dismantlement work.Feedback reflective photoelectric sensor 204 and reflecting optics II 502 form boom position detecting device 5 jointly.When feedback reflective photoelectric sensor 204 can receive the laser beam that reflecting optics II 502 fires back smoothly, proving that crane arm is in can in jacking position range, otherwise system will send alerting signal, carry out sound and light alarm, quit work.
As shown in figure 11, method for supervising of the present invention is:
Handling signal is sent to PLC by system, control crane lifting system jacking or dismounting, by jacking stock degree of dip detecting device 1, anti-roof fall detecting device 2 and on, under quit with regard to level detecting apparatus 31, 32, boom position detecting device 5 detects respectively and sends signal, until each position is all normal, start jacking or dismounting action, in jacking or unloading process, if each detecting device all works in safe range, jacking work safety, carry out smoothly, once there be detecting device to transfinite, PLC controls warning device and sends sound and light alarm, jacking or dismantlement work stop immediately, until deal with problems manually, just can proceed jacking or dismantlement work, after jacking or dismounting action complete smoothly, each several part resets, complete a working cycle, wherein:
Jacking stock degree of dip detecting device 1 is measured stock angle of inclination in jacking process and whether is exceeded regulation safety value, if the angle of inclination measured is greater than safety value, then send alerting signal, carry out sound and light alarm, jacking process will stop immediately, until after dealing with problems, continue jacking or dismantlement work;
Anti-roof fall detecting device 2 detects the whether roof fall of jacking stock, when the distance of end face is less than regulation safety distance on jacking stock upper guide road wheel distance between center line tower-body standard section time, send alerting signal, carry out sound and light alarm, jacking cylinder stops jacking work, can only decline; Until the time in that the distance of end face being more than or equal to regulation safety distance on jacking stock upper guide road wheel distance tower-body standard section, continue jacking or dismantlement work;
Upper and lower quit to detect respectively with regard to level detecting apparatus 31,32 upper and lowerly whether accurately in placely quit, as in place inaccurate, system then sends alerting signal, carries out sound and light alarm; In place accurate time, continue jacking or dismantlement work;
Boom position detecting device 5 detects whether crane arm be in can in jacking position range, and if not, then system sends alerting signal, carries out sound and light alarm, quits work; If so, jacking or dismantlement work is continued;
During warning, PLC controls jacking cylinder and stops action.
Working process of the present invention:
The present invention can complete the on-line monitoring of tower crane at jacking and unloading process, and the functions such as operational factor shows in real time, overload alarm, effectively avoid the grave accident produced because of human operational error.The combined action of every part detecting device, common guarantee jacking and unloading process carry out safely and effectively.
1. anti-roof fall detecting device adopts the distance on 2 groups of feedback reflective photoelectric sensors detection jacking stock top tumbler line of centerss and tower-body standard section between end face.During normal jacking work, the laser signal of two groups of feedback reflective photoelectric sensor transmittings is all blocked by tower-body standard section, cannot arrive reflecting optics.During final step jacking, when on jacking stock top tumbler line of centers and tower-body standard section, end face arrives preset security distance, tower-body standard section incites somebody to action no longer blocking laser ray, laser beam is received by reflecting optics, prove that jacking stock is by roof fall, system sound and light alarm, and stop jacking work, jacking cylinder can not extend, and can only shorten.
2. jacking cylinder device for detecting distance of travel detects the collapsing length of jacking cylinder to lifting beam upper surface Emission Lasers signal by a laser rangefinder being installed on jacking stock rear panel jacking cross beam lower surface.Whether exceeded by the superposition stroke detecting jacking cylinder and often save standard knot jacking scope, effectively can avoid jacking roof fall problem, jacking cylinder device for detecting distance of travel and anti-roof fall detecting device form anti-roof fall double insurance effect.
3. boom position detecting device adopts, between upper and lower turn table, cover plate is equipped with feedback reflective photoelectric sensor and reflecting optics, if feedback reflective photoelectric sensor can receive the laser signal that reflecting optics reflects smoothly show that crane arm is in jacking safe deflection angular range.
4. stock degree of dip detects the degree of dip adopting double-shaft tilt angle sensor to measure stock, is arranged on the main limb of stock, is analyzed by the Signal transmissions of collection to PLC, can ensure that tower body and stock are in suitable squareness.
5. quit up and down and near quitting up and down, arrange 4 groups of correlation type opto-electronic pickups with regard to level detecting apparatus, often group is responsible for detection position of quitting.When hook of quitting completes, if the receiving end of correlation type opto-electronic pickup shows that hook puts in place when all receiving the laser signal of correlation type opto-electronic pickup transmitting terminal, jacking can work on, otherwise, system will send sound and light alarm, jacking work will stop immediately, until deal with problems manually, just can work on.

Claims (7)

1. a tower crane lifting alliance state on-line monitoring method, it is characterized in that: send handling signal to PLC by system, control crane lifting system jacking or dismounting, to be detected respectively with regard to level detecting apparatus by jacking stock degree of dip detecting device, anti-roof fall detecting device and upper and lower quitting and to be sent signal, after testing, until each position is all normal, start jacking or dismounting action, in jacking or unloading process, if each detecting device all works in safe range, continue jacking or dismounting; If a certain detecting device transfinites, PLC controls warning device and sends sound and light alarm, stops jacking or dismounting, until solve warning problem, continues jacking or dismounting, and after jacking or dismounting complete, each several part resets, and completes a working cycle; Wherein:
Jacking stock degree of dip detecting device is measured stock angle of inclination in jacking or unloading process and whether is exceeded regulation safety value, if the angle of inclination measured is greater than safety value, then send alerting signal, carry out sound and light alarm, jacking or unloading process will stop immediately, until after dealing with problems manually, continue jacking or dismantlement work;
Anti-roof fall detecting device detects the whether roof fall of jacking stock, when the distance of end face is less than regulation safety distance on jacking stock upper guide road wheel distance between center line tower-body standard section time, send alerting signal, carry out sound and light alarm, jacking cylinder stops jacking work, can only decline; Until the time in that the distance of end face being more than or equal to regulation safety distance on jacking stock upper guide road wheel distance between center line tower-body standard section, continue jacking or dismantlement work; Described anti-roof fall detecting device comprises two groups of feedback reflective photoelectric sensors, reflecting optics I and the paired linea angulata direction of opto-electronic pickup of feedback reflective photoelectric sensor, be installed on the web member of left of jacking stock jacking framework upper and rear panel respectively, and on the web member of left and right, the status requirement of the laser beam wherein between reflecting optics I and opto-electronic pickup: during final step jacking, on jacking stock top tumbler line of centers and the main limb of tower-body standard section, end face is reserved with safety distance, ensures that jacking stock can not roof fall;
Upper and lower quit to detect respectively with regard to level detecting apparatus upper and lowerly whether accurately in placely quit, as in place inaccurate, system then sends alerting signal, carries out sound and light alarm; In place accurate time, continue jacking or dismantlement work;
Boom position detecting device detects whether crane arm be in can in jacking position range, and if not, then system sends alerting signal, carries out sound and light alarm, stops jacking or dismantlement work; If so, jacking or dismantlement work is continued;
During warning, PLC controls jacking cylinder and stops action.
2. implement the claims the monitored control system of tower crane lifting alliance state on-line monitoring method described in 1, it is characterized in that: comprise PLC, the sensing device of image data, manoeuvring platform, telltale and annunciator, described sensing device comprises jacking stock degree of dip detecting device, anti-roof fall detecting device, on, under quit with regard to level detecting apparatus and boom position detecting device, described PLC, manoeuvring platform and are arranged in casing, be placed on tower crane lifting cover body panel, sensing device and warning device are installed on tower crane lifting stock and rotary table, manoeuvring platform, each detecting device is connected with PLC respectively, PLC mouth connects annunciator and indicator lamp respectively.
3. monitored control system according to claim 2, it is characterized in that: described jacking stock degree of dip detecting device is double-shaft tilt angle sensor, this double-shaft tilt angle sensor is arranged on the main limb of jacking stock, gathers the inclination angle signal in jacking stock jacking process and be transferred to PLC by double-shaft tilt angle sensor.
4. monitored control system according to claim 2, it is characterized in that: described upper and lower quitting comprises two groups of correlation type opto-electronic pickups respectively with regard to level detecting apparatus, on quit with regard to level detecting apparatus respectively symmetry be arranged on the main limb of jacking stock rear panel and web member, on quit hook in place time, the laser beam between correlation type opto-electronic pickup transmitting terminal and receiving end is through the steel plate through hole with holes of lower end welding of above quitting; Under quit with regard to level detecting apparatus respectively symmetrical be arranged on stock rear panel web member and under quit on, under quit hook in place time, the laser beam of correlation type opto-electronic pickup is through the through hole on bent plate II.
5. monitored control system according to claim 2, it is characterized in that: jacking stock rear panel jacking cross beam lower surface is provided with jacking cylinder device for detecting distance of travel, this device is laser rangefinder, and laser rangefinder is to the collapsing length of lifting beam upper surface Emission Lasers radionetric survey jacking cylinder.
6. monitored control system according to claim 2, is characterized in that: described boom position is detected as one group of feedback reflective photoelectric sensor, is installed on respectively on upper and lower turn table apparent surface.
7. monitored control system according to claim 6, is characterized in that: the installation length of described feedback reflective photoelectric sensor reflecting optics is arranged relative to turn table central angle ± 5 °.
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CN107628551B (en) * 2017-11-07 2019-03-05 广东大汉建设机械有限公司 A kind of intelligent link system applied to building tower crane
CN107720571B (en) * 2017-11-13 2019-09-03 长沙海川自动化设备有限公司 Tower crane and its fixed operating condition on-line monitoring method of structure, device and storage medium
CN107720553B (en) * 2017-11-13 2019-04-26 长沙海川自动化设备有限公司 Tower crane and its assembly control method, control device and storage medium
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