CN212356342U - Tower crane capable of early warning inclination - Google Patents
Tower crane capable of early warning inclination Download PDFInfo
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- CN212356342U CN212356342U CN202020798786.7U CN202020798786U CN212356342U CN 212356342 U CN212356342 U CN 212356342U CN 202020798786 U CN202020798786 U CN 202020798786U CN 212356342 U CN212356342 U CN 212356342U
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Abstract
The utility model discloses a tower crane that can early warning slope aims at solving current tower crane and hangs heavy quality problems that detection control system can not fundamentally detect tower crane itself, and can not in time and rapid carry out the technical problem of tower crane quality problems information feedback itself, the utility model discloses an at the inclination measuring device of the sensitive tower body inclination of installation of static tower body upper end, fundamentally has avoided the error that rotatory davit was brought to can real-time detection tower body top along the small slope of ideal axis, work and equipment self situation that rethread data processing unit contrast processing just can real-time feedback tower crane system reach and detect and early warning purpose, thereby reduce dangerous accident incidence.
Description
Technical Field
The utility model relates to a tower crane, concretely relates to tower crane that can early warning slope.
Background
In modern city construction, various construction sites in cities are increasing. Under construction in construction site, the direct-lifting tower crane is almost main mechanical equipment of a high-rise building, so that more and more accidents occur frequently due to insufficient use and maintenance of the tower crane, standard sections of the direct-lifting tower crane are connected with each other and gradually accumulated, the requirements of tower cranes with different heights are met, the standard sections are manufactured in a welding mode, and more than ten bolts are used for connecting the standard sections. The tower crane has high utilization rate on a construction site, so that the tower crane is not well maintained and old tower cranes are more and more, and accidents caused by falling and loosening of connecting bolts, deformation (plastic deformation) of standard joints, corrosion of materials and the like often occur.
Although a tower crane hoisting weight detection control system is provided, the problem cannot be fundamentally solved, namely the quality problem of the tower crane cannot be detected; and the existing tower crane hoisting weight detection control system can not timely and rapidly feed back the information of the quality problem of the tower crane.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving current tower crane and hang heavy quality problems that detection control system can not fundamentally detect tower crane itself, can not in time and rapid carry out the technical problem of tower crane quality problems information feedback itself moreover, and provide a tower crane that can early warning slope.
In order to achieve the purpose, the utility model provides a tower crane capable of early warning and inclining, which comprises a tower body, a rotating suspension arm, an inclination angle measuring device, a communication unit, a data processing unit and an alarm unit, wherein the tower body comprises a plurality of sequentially superposed standard joints and a sleeve frame sleeved outside the upper end of the tower body; the rotary suspension arm is rotatably connected with the tower body through a tower crane slewing mechanism; the data processing unit receives a tower body inclination angle signal output by the inclination angle measuring device through the communication unit, and simultaneously compares the tower body inclination angle signal with a set safety curve to generate an alarm signal; the alarm unit alarms according to the alarm signal;
it is characterized in that:
the inclination angle measuring device is arranged at the upper end of the tower body.
Further, the inclination angle measuring device is horizontally fixed at the upper end of the outer side of the sleeve frame.
Further, the inclination angle measuring device is horizontally fixed at the upper end position of the center line of the standard section at the uppermost end of the tower body.
Further, the device also comprises a torsion sensor, and the installation position of the torsion sensor is the same as that of the inclination angle measuring device;
the data processing unit receives the tower body torsion signal output by the torsion sensor through the communication unit, and simultaneously compares the tower body torsion signal with a set safety curve to generate an alarm signal.
Further, the device also comprises a leveling mechanism, and the inclination angle measuring device and the torsion sensor are installed on the leveling mechanism.
Further, the inclination angle measuring device is an inclination angle sensor, a three-axis acceleration inclination angle sensor or a GPS positioning unit.
Further, the resolution of the tilt angle measuring device is less than 0.004 degree.
The utility model has the advantages that:
1. the rotating suspension arm of the existing tower crane hoisting detection control system rotates along a tower crane slewing mechanism, and when the inclination angle is measured, the inclination angle and the azimuth angle of the rotating suspension arm need to be measured respectively. However, the inclination angle of the rotating suspension arm is affected by the rotation error of the slewing mechanism, and the measurement error is large; the azimuth angle measurement of the rotary suspension arm is often affected by the poor precision and the long delay of the angle sensor, so that the overall detection precision is poor. The utility model discloses an at the inclination measuring device of the sensitive tower body inclination of static tower body upper end installation, fundamentally has avoided the error that rotatory davit's rotation brought to can the small slope of ideal axis be followed on the real-time detection tower body top, work and equipment self situation that rethread data processing unit contrast processing just can real-time feedback tower crane system reach and detect and the early warning purpose, thereby reduce dangerous accident rate.
2. The existing tower crane hoisting weight detection control system carries out torsion detection by detecting the acceleration of a rotary hoisting arm. However, when the rotating boom lifts different weights, the detected acceleration is different, so the torsion degree of the tower body cannot be detected fundamentally. The utility model discloses set up torsion sensor in the cover frame outside upper end of body of the tower for the torsion angle of the standard festival when real-time measurement rotatory davit starts and stops, if the tower crane slope, then torsion angle decides to have and changes, therefore torsion angle's measurement has further increased the tower crane slope measuring sensitivity. In addition, if the acceleration of the tower crane during starting and stopping is too large, the torsion angle of the standard knot is too large, an alarm can be caused, and the rough starting and stopping of an operator can be prevented, so that the structural safety of the tower crane is further ensured.
3. The inclination angle of the inclination angle sensor of the utility model is obviously changed, except that the size of the inclination angle represents the safety degree of the tower body; the position with the obviously changed inclination angle represents that the tower body at the position circularly symmetrical to the inclination angle has potential safety hazard, so that maintenance personnel can conveniently and quickly find the hidden part, and the maintenance time is shortened.
4. The utility model discloses set up inclination measuring device and torsion sensor on levelling mechanism, can carry out the horizontal plane leveling back to inclination measuring device earlier in the use initial stage, drop into the use again, can improve detection and early warning precision in the tower crane use.
5. The utility model discloses can set up inclination measuring device and torsion sensor in the upper end of tower body top standard festival central line, also can set up in the upper end in the outside of cover frame, the mounted position is nimble. When the inclination angle measuring device and the torsion sensor are arranged at the upper end of the center line of the standard section at the uppermost end of the tower body, the measuring precision is higher; when the inclination angle measuring device and the torsion sensor are arranged, the installation is more convenient. Of course, the inclination angle measuring device and the torsion sensor may be respectively disposed at the upper end of the center line of the uppermost standard knot of the tower body and the upper end of the outer side of the jacket frame according to actual conditions.
6. The utility model discloses inclination measuring device's that uses resolution ratio is less than 0.004 degree, has improved measurement accuracy greatly, and more effective early warning has further improved the security of tower crane.
7. The utility model discloses simple structure easily implements, both can reequip on old tower hangs, also can just adorn on the tower crane of new production, and the cost that increases is not many, and operating personnel's life safety on its effect has but effectively ensured tower crane self safety and the tower crane.
Drawings
FIG. 1 is a schematic diagram of a tower crane structure capable of early warning inclination;
fig. 2 is a top view of fig. 1.
In the figure, 1-tower body, 11-standard knot, 12-attachment arm, 13-set frame, 2-rotating suspension arm, 3-inclination angle measuring device, 4-tower crane rotation mechanism, 5-leveling mechanism, 6-torsion sensor and 7-test counterweight.
Detailed Description
For making the objects, advantages and features of the present invention clearer, the following description will be made in conjunction with the accompanying drawings and specific embodiments for further details of the tower crane with early warning and tilting functions. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in a very simplified form and are not to precise scale, and are provided solely for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention; second, the structures shown in the drawings are often part of actual structures.
The utility model relates to a tower crane capable of early warning and inclining, as shown in fig. 1 and fig. 2, comprising a tower body 1, a rotary suspension arm 2, an inclination angle measuring device 3, a leveling mechanism 5, a torsion sensor 6, a communication unit, a data processing unit and an alarm unit, wherein the tower body 1 comprises a plurality of sequentially superposed standard joints 11, a tower crane attachment arm 12 arranged in the middle of the tower body 1 and a sleeve frame 13 sleeved outside the upper end of the tower body 1; the rotary suspension arm 2 is rotatably connected with the tower body 1 through a tower crane swing mechanism 4, the leveling mechanism 5 can adopt various professional leveling mechanisms and also can be composed of a flat plate and three leveling screws which are distributed on the flat plate in a triangular manner, and the leveling mechanisms are arranged at the top of the center line of the uppermost standard joint 11 of the tower body 1 or at the upper end of the outer side of the sleeve frame 13; the top of the center line of the standard joint 11 at the uppermost end of the tower body 1 has higher measurement precision, and the top of the center line is arranged at the upper end of the outer side of the sleeve frame 13, so that the installation is convenient; in order to further improve the measurement accuracy, the utility model discloses install inclination measuring device 3 on levelling mechanism 5, adjust levelling mechanism 5 and make inclination measuring device 3 level place. The dip angle measuring device 3 is a dip angle sensor, a three-axis acceleration dip angle sensor or a GPS positioning unit, and the resolution ratio is preferably less than 0.004 degrees; this inclination measuring device 3 detectable tower crane adheres to the body of the tower more than 12 and the change of body of the tower inclination under the operating condition stress state, detects the body of the tower and receives the change of inclination at body of the tower top behind the not equidirectional pulling force.
And the torsion sensor 6 is also arranged on the leveling mechanism 5 and is used for measuring the torsion angle of the standard knot when the rotary suspension arm 2 is started and stopped in real time. The torsion sensor 6 is the same as the standard knot 11 and does not rotate along with the rotating suspension arm 2, torsion does not occur in normal time, when the rotating suspension arm 2 is suddenly started or stopped to rotate, the uppermost standard knot 11 can form an elastic body, and at the moment, the standard knot deforms and twists, so that a twisting signal is generated.
The data processing unit receives and stores the inclination angle signal output by the inclination angle measuring device 3 and the torsion signal output by the torsion sensor 6 through the communication unit, compares the inclination angle signal output by the inclination angle measuring device 3 with a set safety curve, compares the torsion signal output by the torsion sensor 6 with a set safety threshold value, and outputs an alarm signal to the alarm unit according to the comparison result.
If the tower crane is damaged by the plastic deformation of the material due to the falling and loosening of the standard section bolt, the quality problem of the tower crane caused by long-term overhaul and long-term overload of the tower crane can be fundamentally detected, and the tower crane accidents can be reduced.
The utility model discloses a design principle regards the body of the tower as the long cylinder of rigidity of an ideal, and it only receives the pulling force of lifting by crane the heavy object under normal conditions, and the deflection only is relevant with the weight and the distance of lifting by crane the heavy object, and inclination can not break suddenly. However, when the connecting bolt is loosened, the standard section is deformed (plastic deformation) and the material is rusted, the ideal rigid long column body is no longer an ideal rigid body and is influenced by a hoisting heavy object with the same distance and weight, the deformation amount is increased, and the inclination angle and the inclination direction are obviously changed, so that the alarm is caused.
The inclination detection and early warning method of the tower crane comprises the following steps:
at least one inclination angle measuring device 3 and a torsion sensor 6 are arranged at the top of the center line of the uppermost standard joint 11 of the tower body 1 or at the upper end of the outer side of a sleeve frame 13 of the tower body 1, and the inclination angle measuring device 3 is connected with a data processing unit through a communication unit; the data processing unit is connected with the alarm unit;
hoisting the test counterweight 7 to enable the tower crane to be in a maximum amplitude state, rotating forward and backward for two circles respectively, measuring the inclination angle of the tower body by the inclination angle measuring device 3 and sending the inclination angle to the data processing unit; if the inclination curve obtained according to the inclination angle of the tower body is positioned in the set safety curve, the detection result is safe;
when the tower crane for detecting safety is in normal use, the inclination angle measuring device 3 measures the inclination angle of the tower body 1 in real time, and if the inclination angle of the tower body 1 at any moment exceeds a set safety curve, the data processing unit sends an alarm signal to the alarm unit. Meanwhile, when the tower crane for detecting safety is in normal use, the torsion sensor 6 measures the torsion angle generated by the standard knot when the rotary suspension arm 2 is started and stopped in real time, and if the torsion angle exceeds a set safety threshold value at any moment, the data processing unit sends an alarm signal to the alarm unit.
It should be noted that: when the tower crane state is changed, the detection of the step 2 is carried out again; the tower crane condition change includes adding or subtracting standard knots 11, installing or removing tower crane attachment arms 12. Namely: after each standard section is increased or decreased, the distance change range and the angle change range of the system need to be reset again. And the system is subjected to cyclic detection to process the detection data, and the detection data is corrected through the detection of outdoor temperature and wind power. The system adopts a touch screen human-computer interface, and can modify the system in a small range at any time for authorized field personnel. The data processing unit can store more than 25 days of second-level data. The detection data can be uploaded through a network in real time, and managers can detect various data of the tower crane through own management authority.
Claims (7)
1. A tower crane capable of early warning inclination comprises a tower body (1), a rotary suspension arm (2), an inclination angle measuring device (3), a communication unit, a data processing unit and an alarm unit, wherein the tower body (1) comprises a plurality of sequentially superposed standard joints (11) and a sleeve frame (13) sleeved on the outer side of the upper end of the tower body (1); the rotary suspension arm (2) is rotatably connected with the tower body (1) through a tower crane slewing mechanism (4); the data processing unit receives a tower body inclination angle signal output by the inclination angle measuring device (3) through the communication unit, and simultaneously compares the tower body inclination angle signal with a set safety curve to generate an alarm signal; the alarm unit alarms according to the alarm signal;
the method is characterized in that:
the inclination angle measuring device (3) is arranged at the upper end of the tower body (1).
2. The tower crane capable of early warning inclination according to claim 1, is characterized in that:
the dip angle measuring device (3) is horizontally fixed at the upper end of the outer side of the sleeve frame (13).
3. The tower crane capable of early warning inclination according to claim 1, is characterized in that:
the inclination angle measuring device (3) is horizontally fixed at the upper end position of the center line of the uppermost standard joint (11) of the tower body (1).
4. The tower crane capable of early warning inclination according to claim 1, 2 or 3, wherein:
also comprises a torsion sensor (6);
the installation positions of the torsion sensor (6) and the inclination angle measuring device (3) are the same;
the data processing unit receives the tower body torsion signal output by the torsion sensor (6) through the communication unit, and simultaneously compares the tower body torsion signal with a set safety curve to generate an alarm signal.
5. The tower crane capable of early warning inclination according to claim 4, wherein:
the device also comprises a leveling mechanism (5);
the inclination angle measuring device (3) and the torsion sensor (6) are installed on the leveling mechanism (5).
6. The tower crane capable of early warning inclination according to claim 5, wherein: the inclination angle measuring device (3) is an inclination angle sensor or a GPS positioning unit.
7. The tower crane capable of early warning inclination according to claim 6, wherein: the resolution of the inclination angle measuring device (3) is less than 0.004 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020798786.7U CN212356342U (en) | 2020-05-14 | 2020-05-14 | Tower crane capable of early warning inclination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020798786.7U CN212356342U (en) | 2020-05-14 | 2020-05-14 | Tower crane capable of early warning inclination |
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| Publication Number | Publication Date |
|---|---|
| CN212356342U true CN212356342U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020798786.7U Active CN212356342U (en) | 2020-05-14 | 2020-05-14 | Tower crane capable of early warning inclination |
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| CN (1) | CN212356342U (en) |
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- 2020-05-14 CN CN202020798786.7U patent/CN212356342U/en active Active
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Inventor after: Liu Yanfeng Inventor after: Yang Yang Inventor after: Ma Shunfa Inventor after: Sun Li Inventor after: Xu Baogang Inventor after: Hu Qianqian Inventor after: Wang Weiping Inventor after: Li Hupeng Inventor after: Guan Fuqi Inventor after: Yang Minghui Inventor before: Liu Yanfeng Inventor before: Yang Minghui Inventor before: Yang Yang Inventor before: Zhang Shufen Inventor before: Ma Shunfa Inventor before: Sun Li Inventor before: Xu Baogang Inventor before: Hu Qian Inventor before: Wang Weiping Inventor before: Li Hupeng Inventor before: Guan Fuqi Inventor before: Li Chenguang |