CN204057728U - A kind of tower machine jacking state online monitoring system - Google Patents
A kind of tower machine jacking state online monitoring system Download PDFInfo
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- CN204057728U CN204057728U CN201420526517.XU CN201420526517U CN204057728U CN 204057728 U CN204057728 U CN 204057728U CN 201420526517 U CN201420526517 U CN 201420526517U CN 204057728 U CN204057728 U CN 204057728U
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Abstract
A kind of tower machine jacking state online monitoring system, comprises the first vibration monitoring device be arranged on equilibrium arm; Be arranged on the second vibration monitoring device of tower machine tower body; Be arranged on the 3rd vibration monitoring device on crane arm; Be arranged on the jam monitoring device on jacking cylinder.Described first vibration monitoring device, the first vibration monitoring device, the 3rd vibration monitoring device, jam monitoring device are connected respectively to control warning device.A kind of tower machine of the utility model jacking state online monitoring system, whether the vibrational load being carried out monitoring tower machine by the mode of the vibration acceleration of monitoring tower machine equilibrium arm, tower body and crane arm exceeds safety value, and carry out by monitoring jacking cylinder load the multi-parameter jacking state on-line monitoring method whether monitoring tower machine occur jam, realize early detection jacking abnormal, control jacking cylinder action, improve the safety of tower machine lifting operation.
Description
Technical field
The utility model relates to a kind of tower machine jacking state online monitoring system, and tower crane lifting operation process Real-Time Monitoring field.
Background technology
Tower crane (hereinafter referred to as tower machine) is one of main construction machinery and equipment of modern industry and civil construction.Primarily of part compositions such as underframe, tower body, equilibrium arm, crane arm, tower top and pull bars, its operating mechanism mainly comprises: lifting mechanism, swing type mechanism, dolly trailer coupling, lifting body etc.Because tower crane can near building, its amplitude degree of utilization can reach 80% of whole range.Therefore, tower crane use amount in high-building construction maintains the leading position always.Along with the construction of heavy construction increases, propose more and more higher requirement to the height of tower crane, connecing height and can not use other accessory equipment due to tower machine, needs to increase from jacking, therefore, have and be widely used from the tower crane of lifting guide support adding.
The lifting guide support adding of tower crane is completed by lifting body, and typical lifting body is enclosed within tower body by one and the stock of an opening, a standard knot imported unit and a set of jacking cylinder system be arranged on stock form.In lifting operation, jacking cylinder is by topside (mainly comprising equilibrium arm, tower body and crane arm) jack-up, now topside and tower body need temporarily to be separated completely, the deadweight of topside is supported by means of only jacking cylinder, and the capsizing moment of topside passes to tower machine tower body through stock.In lifting operation process, although allocate tower machine to static balance state, the factors such as wind carries, the fluctuation of jacking cylinder top lift can cause the elastic oscillation of tower machine, produce vibration stress.Simultaneously owing to there is gap between stock and tower body, this make topside vibrate produce capsizing moment interval pass to tower body, this makes stock have stronger vibration stress to tower body, if the vibration stress produced is excessive, exceed tower machine steel structure strength limit, tower machine steel structure will be caused to destroy, and jacking cylinder load rise can be made when jam phenomenon appears in tower machine, after the jam stage, jacking cylinder load has quick reduction, cause the fluctuation of top lift, cause tower machine vibration to aggravate.
Regulation in GB GBT26471-2011 " tower crane installation and removal rule ": in tower machine jacking process, should observe stock at any time with tower body track with or without jam phenomenon, and whether cable trunk is pressed from both sides pultrusion wound etc.If there are abnormal condition, should shut-down operation immediately.At present to national regulations employing is rely on experience to judge whether tower machine occurs exception by operating personal according to the extent of vibration of tower machine.Because personnel judge that there is delay the time, late when judging that tower machine occurs obviously extremely starting to process.Therefore, be very necessary to the early detection of tower machine lifting operation error state and process.But, in existing technology, explicitly not bright to needing the abnormal condition of shut-down operation to do on the one hand, will occur at tower machine on the other hand, when even there are the abnormal condition needing shut-down operation, operating personal due to response delay can not shut-down operation in time.Therefore, be badly in need of a set of tower machine lifting operation online monitoring system of exploitation, the jam state of tower machine and vibration acceleration information in real-time monitoring tower machine lifting operation process, judge tower machine whether occur jam or vibrational load whether excessive, realize early detection and the process of tower machine jacking error state, thus improve the safety of tower machine lifting operation.
Summary of the invention
For the technical matters of above-mentioned existence, the utility model provides a kind of tower machine jacking state online monitoring system, whether the vibrational load being carried out monitoring tower machine by the mode of the vibration acceleration of monitoring tower machine equilibrium arm, tower body and crane arm exceeds safety value, and carry out by monitoring jacking cylinder load the multi-parameter jacking state on-line monitoring method whether monitoring tower machine occur jam, realize early detection jacking abnormal, control jacking cylinder action, improve the safety of tower machine lifting operation.
The technical scheme that the utility model is taked is: a kind of tower machine jacking state online monitoring system, comprises the first vibration monitoring device be arranged on equilibrium arm; Be arranged on the second vibration monitoring device of tower machine tower body; Be arranged on the 3rd vibration monitoring device on crane arm; Be arranged on the jam monitoring device on jacking cylinder.Described first vibration monitoring device, the first vibration monitoring device, the 3rd vibration monitoring device, jam monitoring device are connected respectively to control warning device.
Described first vibration monitoring device, the second vibration monitoring device, the 3rd vibration monitoring device, each vibration monitoring device includes base, coil, spring, permanent magnet, setting nut, peripheral circuit module, wireless signal transmitting device, coil, wireless signal transmitting device are fixedly mounted on base, setting nut is arranged on base, setting nut connects permanent magnet one end by spring, the permanent magnet other end connects base by spring, and coil connects wireless signal transmitting device.
In application process, first according to the maximum vibration acceleration/accel allowed during the tower machine dynamic factor determination tower machine safe operation adopted in tower machine design instruction; Then, first, second and third vibration monitoring device is set under determined maximum vibration acceleration/accel, concrete, tighten setting nut, vibration monitoring device is made to do simple harmonic oscillation, and the peak acceleration size of simple harmonic oscillation is above-mentioned determined maximum vibration acceleration/accel, progressively loosen setting nut, until first, second and third vibration monitoring device interior loop produce induced electric motive force and exceed the threshold voltage set by peripheral circuit module and send alerting signal, so far first, second and third vibration monitoring device setting is complete.When carrying out the installation of vibration monitoring device, vibration monitoring device complete for described adjustment is fixedly mounted on the correspondence position of tower machine.When carrying out lifting operation, permanent magnet in vibration monitoring device vibrates relative to coil thus changes the magnetic flow of coil and then produce induced electric motive force at the two ends of coil under the effect of force of inertia, spring-return power, when the induced electric motive force produced exceeds the threshold voltage set by peripheral circuit module, send alerting signal.
Described coil connects peripheral circuit module, peripheral circuit module connects wireless signal transmitting device by lead-in wire.
Described jam monitoring device comprises the pressure sensor be arranged in the rodless cavity of jacking cylinder, and pressure sensor is for monitoring the oil pressure of the rodless cavity in jacking cylinder.
Control warning device and comprise signal receiving module, combined aural and visual alarm and power element, wherein signal receiving module is arranged in tower machine driver's cab for receiving the wireless pulse signals that wireless pulse signals feedway sends, combined aural and visual alarm is arranged in tower machine driver's cab, continuous sound and light alarm is sent receiving alerting signal rear drive combined aural and visual alarm at signal receiving module, remind tower machine driver present stage tower machine in the hole, lifting operation should be stopped immediately.
Wherein power element is that three-position four-way electromagnetic directional valve is arranged in tower machine jacking hydraulic system, control warning device 3 drives solenoid directional control valve to stop to jacking cylinder fuel feeding to stop jacking cylinder action immediately after receiving control alerting signal, after the reply of tower machine is stable, regains jacking cylinder, after trouble-shooting, carries out lifting operation again.
A kind of tower machine jacking state on-line monitoring method, by the first vibration monitoring device, second vibration monitoring device, 3rd vibration monitoring device monitors equilibrium arm respectively, tower machine tower body, the vibration acceleration of crane arm, equilibrium arm will be monitored, tower machine tower body, the vibration acceleration of crane arm respectively with equilibrium arm, tower machine tower body, the setting value of crane arm amplitude compares, when measurement tower machine tower body, when one of them accekeration of crane arm and equilibrium arm is more than or equal to one of them acceleration/accel setting value, control jack-up system and stop jacking immediately, jacking cylinder is regained after the reply of tower machine is stable, lifting operation is carried out again after trouble-shooting, when the accekeration measuring tower machine tower body, crane arm and equilibrium arm is all less than or equal to setting value, proceed lifting operation.
A kind of tower machine jacking state on-line monitoring method, it is characterized in that, in jam monitoring device Real-Time Monitoring jacking process, the pressure of jacking cylinder rodless cavity, if measure pressure occur sharply increase or concuss time, send alerting signal, immediately drive three-position four-way electromagnetic directional valve stop to jacking cylinder fuel feeding to stop jacking cylinder action, after the reply of tower machine is stable, regains jacking cylinder, after trouble-shooting, carries out lifting operation again.
A kind of tower machine jacking state on-line monitoring method, first under the condition that tower machine vibration frequency is close to first, two, three vibration monitoring devices set, concrete, the tower machine dynamic factor adopted in tower machine design instruction has reacted the tower machine vibration load and vibration acceleration that tower machine allows in design calculation process, when carrying out the first vibration monitoring device setting, under the vibration acceleration condition allowed, by the predetermincd tension of setting nut regulating spring, vibration monitoring device is made to send alerting signal when exceeding the determined vibration acceleration of tower machine dynamic factor.When carrying out the installation of vibration monitoring device, vibration monitoring device complete for described adjustment is fixedly mounted on the correspondence position of tower machine.When carrying out lifting operation, tower machine drives vibration monitoring device to do double vibrations, permanent magnet in vibration monitoring device makes double vibrations relative to coil thus changes the magnetic flow of coil and then produce induced electric motive force at the two ends of coil under the effect of force of inertia, spring-return power, when the induced electric motive force produced exceeds threshold voltage set by peripheral circuit module, drive wireless pulse signals feedway 128 to send pulse signal alarming, if the induced electric motive force measured does not exceed threshold voltage, proceed lifting operation.
A kind of tower machine jacking state on-line monitoring method, first completes the dead work before lifting operation; Start jacking cylinder, start to carry out lifting operation; In jacking process, be arranged on the first vibration monitoring device on equilibrium arm; Be arranged on the second vibration monitoring device of tower machine tower body; Be arranged on permanent magnet in the 3rd vibration monitoring device on crane arm and drive forced vibration at tower machine equilibrium arm, tower body and crane arm, thus the magnetic flow changed in coil and then produce induced electric motive force at the two ends of coil; Peripheral circuit module is amplified the induced electric motive force by lead-in wire input and is contrasted with the threshold voltage of setting, wireless pulse signals feedway is driven to send pulse signal alarming when the induced electric motive force measured exceedes threshold voltage, control warning device and send sound and light alarm after receiving alerting signal, and stop jacking cylinder action immediately, after the reply of tower machine is stable, regains jacking cylinder, after trouble-shooting, carries out lifting operation again; If each device does not all send alerting signal, then complete a lifting operation.
A kind of tower machine of the utility model jacking state online monitoring system, by vibration acceleration, the jacking cylinder loading condition of on-line monitoring tower machine tower body, crane arm and equilibrium arm, judge whether tower machine occurs the abnormal condition needing shut-down operation immediately, realizes early detection and the process of tower machine jacking error state.Overcome operating personal in existing jacking process can not Timeliness coverage, process jacking error state problem.In addition, the vibration acceleration monitoring device of employing produces electric energy owing to utilizing tower machine itself vibrates, thus need not lay supply line, overcome the problem that sensor installs difficulty.
Accompanying drawing explanation
Fig. 1 is that the utility model monitored control system connects block diagram.
Fig. 2 is the installation site schematic diagram of the utility model monitored control system tower machine.
Fig. 3 is the vibration monitoring device structural representation in the utility model monitored control system.
Fig. 4 is the jam monitoring device structural representation in the utility model monitored control system.
Fig. 5 is the utility model monitored control system diagram of circuit.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of tower machine jacking state online monitoring system, comprises the first vibration monitoring device 11 be arranged on equilibrium arm; Be arranged on the second vibration monitoring device 12 of tower machine tower body; Be arranged on the 3rd vibration monitoring device 13 on crane arm; Be arranged on the jam monitoring device 2 on jacking cylinder; Described first vibration monitoring device 11, first vibration monitoring device 12, the 3rd vibration monitoring device 13, jam monitoring device 2 are connected respectively to and control warning device 3.
Described first vibration monitoring device 11, first vibration monitoring device 12, the 3rd vibration monitoring device 13 are respectively used to the vibration acceleration measuring position, send control alerting signal when the vibration acceleration measured exceeds the safety value of setting.Jam monitoring device 2 includes pressure sensor 21, wherein pressure sensor 21 is arranged in the rodless cavity of jacking cylinder, judge whether tower machine occurs jam by the loading condition of monitoring jacking cylinder, if the amplitude of the jacking cylinder load of measuring exceeds setting value, send alerting signal.
In application process, first under the condition that tower machine vibration frequency, amplitude are similar, first vibration monitoring device 11 is set, concrete, the tower machine dynamic factor adopted in tower machine design instruction has reacted the tower machine vibration load and vibration acceleration that tower machine allows in design calculation process, when carrying out the first vibration monitoring device setting by the predetermincd tension of setting nut 125 regulating spring 123, the first vibration monitoring device is made to send alerting signal when exceeding the determined vibration acceleration of tower machine dynamic factor.
Control warning device 3 and comprise signal receiving module, combined aural and visual alarm and power element, wherein signal receiving module is arranged in tower machine driver's cab for receiving the wireless pulse signals that wireless pulse signals feedway 128 sends, combined aural and visual alarm is arranged in tower machine driver's cab, continuous sound and light alarm is sent receiving alerting signal rear drive combined aural and visual alarm at signal receiving module, remind tower machine driver present stage tower machine in the hole, lifting operation should be stopped immediately.
Wherein power element is that three-position four-way electromagnetic directional valve 22 is arranged in tower machine jacking hydraulic system, control warning device 3 drives solenoid directional control valve 22 to stop to jacking cylinder fuel feeding to stop jacking cylinder action immediately after receiving control alerting signal, after the reply of tower machine is stable, regains jacking cylinder, after trouble-shooting, carries out lifting operation again.
As shown in Figure 3, vibration monitoring device comprises the first vibration monitoring device 11, second vibration monitoring device 12, the 3rd vibration monitoring device 13 3 parts, be arranged on equilibrium arm far-end, slewing tower and crane arm far-end respectively, for measuring the vibration acceleration of equilibrium arm, tower body and crane arm.Three partial vibration monitoring devices adopt identical principle and structure to carry out monitoring vibration acceleration/accel, are described below for the first vibration monitoring device 11 being arranged on crane arm front end.
Described first vibration monitoring device 11 comprises base 121, coil 122, spring 123, permanent magnet 124, setting nut 125, peripheral circuit module 126, wireless signal transmitting device 128.Base 121 is mounted by means of bolts on equilibrium arm, coil 122, wireless signal transmitting device 128 are fixedly mounted on base 121, setting nut 125 is arranged on base 121 top, setting nut 125 connects permanent magnet 124 one end by spring 123, permanent magnet 124 other end connects base 121 by spring, and coil 122 connects wireless pulse signals feedway 128.Described coil 122 connects peripheral circuit module 126, peripheral circuit module 126 connects wireless pulse signals feedway 128 by lead-in wire 127.
Described coil 122 connects peripheral circuit module 126 by lead-in wire, peripheral circuit module 126 connects wireless signal transmitting device 128 by lead-in wire 127.In the course of the work, permanent magnet 124 does forced vibration under the effect of equilibrium arm vibratory force and force of inertia and spring 123 restoring force, thus make coil 122 cutting magnetic induction line, produce induced electric motive force, this induced electric motive force acts on peripheral circuit module 126 by lead-in wire 127, the induced electric motive force of peripheral circuit module 126 to input amplifies and contrasts with the threshold voltage of setting, wireless pulse signals feedway 128 is driven to send pulse signal alarming when the induced electric motive force measured exceedes threshold voltage, if the induced electric motive force measured does not exceed threshold voltage, proceed lifting operation.
In application process, first according to the maximum vibration acceleration/accel allowed during the tower machine dynamic factor determination tower machine safe operation adopted in tower machine design instruction, then, the first vibration monitoring device 11 is set under determined maximum vibration acceleration/accel, first vibration monitoring device 12, 3rd vibration monitoring device 13, concrete, tighten setting nut 125, vibration monitoring device is made to do simple harmonic oscillation, and the peak acceleration size of simple harmonic oscillation is above-mentioned determined maximum vibration acceleration/accel, progressively loosen setting nut 125, until the first vibration monitoring device 11, first vibration monitoring device 12, 3rd vibration monitoring device 13 interior loop 122 produce induced electric motive force and exceed the threshold voltage set by peripheral circuit module 126 and send alerting signal, so far the first vibration monitoring device 11, first vibration monitoring device 12, 3rd vibration monitoring device 13 sets complete.When carrying out the installation of vibration monitoring device, vibration monitoring device complete for described adjustment is fixedly mounted on the correspondence position of tower machine.When carrying out lifting operation, permanent magnet 124 in vibration monitoring device vibrates relative to coil 122 thus changes the magnetic flow of coil and then produce induced electric motive force at the two ends of coil 122 under the effect of force of inertia, spring 123 restoring force, when the induced electric motive force produced exceeds the threshold voltage set by peripheral circuit module 126, send alerting signal.
As shown in Figure 5, a kind of tower machine of the utility model jacking state on-line monitoring method, in jacking process, Real-Time Monitoring tower machine tower body, the vibration acceleration of crane arm and equilibrium arm, monitoring jacking cylinder loading condition, judge whether tower machine occurs the abnormal condition needing to stop lifting operation immediately, when there are abnormal condition, monitoring device sends alerting signal, after controlling warning device 3 reception control alerting signal, send continuous sound and light alarm and drive solenoid directional control valve to stop to jacking cylinder fuel feeding to stop jacking cylinder action immediately, jacking cylinder is regained after the reply of tower machine is stable, lifting operation is carried out again after trouble-shooting.
Wherein, first vibration monitoring device 11, first vibration monitoring device 12, the 3rd vibration monitoring device 13 monitor respectively equilibrium arm, tower body, crane arm vibration acceleration whether exceed safety value, if the vibration acceleration measured exceeds safety value, then send alerting signal, carry out sound and light alarm, and control warning device 3 and stop jacking cylinder action immediately, after the reply of tower machine is stable, regains jacking cylinder, after trouble-shooting, carries out lifting operation again.The pressure of jacking cylinder rodless cavity in jam monitoring device 2 Real-Time Monitoring jacking process, if measure pressure occur sharply increase or concuss time, send alerting signal, and control warning device 3 and stop jacking cylinder action immediately, after the reply of tower machine is stable, regains jacking cylinder, after trouble-shooting, carries out lifting operation again.
As shown in Figure 5, a kind of tower machine of the utility model jacking state on-line monitoring process is: first complete the dead work before lifting operation, start jacking cylinder, start to carry out lifting operation, in jacking process, be arranged on the first vibration monitoring device 11 on equilibrium arm, be arranged on the second vibration monitoring device 12 of tower machine tower body, the 3rd vibration monitoring device 13 be arranged on crane arm produces induced electric motive force under tower machine equilibrium arm, tower body and crane arm drive, the induced electric motive force of peripheral circuit module 126 to input amplifies and contrasts with the threshold voltage of setting, wireless pulse signals feedway 128 is driven to send pulse signal alarming when the induced electric motive force measured exceedes threshold voltage, wireless signal transmitting device 128 is driven to send warning impulse singla, control warning device 3 and send sound and light alarm after receiving alerting signal, and drive three-position four-way electromagnetic directional valve to stop to jacking cylinder fuel feeding to stop jacking cylinder action immediately, jacking cylinder is regained after the reply of tower machine is stable, lifting operation is carried out again after trouble-shooting, if each device does not all send alerting signal, then complete a lifting operation.
Claims (6)
1. a tower machine jacking state online monitoring system, comprising:
Be arranged on the first vibration monitoring device (11) on equilibrium arm;
Be arranged on second vibration monitoring device (12) of tower machine tower body;
Be arranged on the 3rd vibration monitoring device (13) on crane arm;
Be arranged on the jam monitoring device (2) on jacking cylinder; It is characterized in that, described first vibration monitoring device (11), the first vibration monitoring device (12), the 3rd vibration monitoring device (13), jam monitoring device (2) are connected respectively to and control warning device (3).
2. a kind of tower machine jacking state online monitoring system according to claim 1, it is characterized in that, described first vibration monitoring device (11), second vibration monitoring device (12), 3rd vibration monitoring device (13), each vibration monitoring device includes base (121), coil (122), spring (123), permanent magnet (124), setting nut (125), wireless signal transmitting device (128), coil (122), wireless signal transmitting device (128) is fixedly mounted on base (121), setting nut (125) is arranged on base (121), setting nut (125) connects permanent magnet (124) one end by spring (123), permanent magnet (124) other end connects base (121) by spring, coil (122) connects wireless signal transmitting device (128).
3. a kind of tower machine jacking state online monitoring system according to claim 2, it is characterized in that in application process, in application process, first according to the maximum vibration acceleration/accel allowed during the tower machine dynamic factor determination tower machine safe operation adopted in tower machine design instruction; Then, first, second and third vibration monitoring device is set under determined maximum vibration acceleration/accel, concrete, tighten setting nut (125), vibration monitoring device is made to do simple harmonic oscillation, and the peak acceleration size of simple harmonic oscillation is above-mentioned determined maximum vibration acceleration/accel, progressively loosen setting nut (125), until first, second and third vibration monitoring device interior loop (122) produce induced electric motive force and exceed the threshold voltage set by peripheral circuit module (126) and send alerting signal, so far first, second and third vibration monitoring device setting is complete.
4. a kind of tower machine jacking state online monitoring system according to claim 2, it is characterized in that, described coil (122) connects peripheral circuit module (126), peripheral circuit module (126) connects wireless signal transmitting device (128) by lead-in wire (127).
5. a kind of tower machine jacking state online monitoring system according to claim 1, it is characterized in that, described jam monitoring device (2) comprises the pressure sensor (21) be arranged in the rodless cavity of jacking cylinder, and pressure sensor (21) is for monitoring the oil pressure of the rodless cavity in jacking cylinder.
6. a kind of tower machine jacking state online monitoring system according to claim 1, is characterized in that, the power element that described control warning device (3) comprises signal receiving module, sound and light alarm module and is arranged in tower machine jacking hydraulic system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420526517.XU CN204057728U (en) | 2014-09-12 | 2014-09-12 | A kind of tower machine jacking state online monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420526517.XU CN204057728U (en) | 2014-09-12 | 2014-09-12 | A kind of tower machine jacking state online monitoring system |
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| CN201420526517.XU Expired - Fee Related CN204057728U (en) | 2014-09-12 | 2014-09-12 | A kind of tower machine jacking state online monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261256A (en) * | 2014-09-12 | 2015-01-07 | 三峡大学 | Online monitoring system and method of tower crane jacking state |
| CN106379812A (en) * | 2016-09-22 | 2017-02-08 | 北京工业大学 | Internal climbing type construction tower crane natural vibration frequency monitoring device and monitoring method thereof |
-
2014
- 2014-09-12 CN CN201420526517.XU patent/CN204057728U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261256A (en) * | 2014-09-12 | 2015-01-07 | 三峡大学 | Online monitoring system and method of tower crane jacking state |
| CN106379812A (en) * | 2016-09-22 | 2017-02-08 | 北京工业大学 | Internal climbing type construction tower crane natural vibration frequency monitoring device and monitoring method thereof |
| CN106379812B (en) * | 2016-09-22 | 2018-07-31 | 北京工业大学 | A kind of inner climbing type construction tower crane natural frequency of vibration monitoring device and its monitoring method |
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