CN103626059B - A kind of method and apparatus verifying tower crane hoisting moment signal - Google Patents

Abstract

Patent of the present invention relates to a kind of method verifying tower crane hoisting moment signal, the present invention is directed to current, both tower crane hoisting moment signal whether accurately effective ways had not been verified, the technical situation of corresponding demo plant is not had yet, the validity of body top inclination signal authentication tower crane hoisting moment signal is utilized to have objectivity, credible, disclose a kind of method and apparatus verifying tower crane hoisting moment signal, the checking of hoisting moment signal and the display of checking conclusion is realized by the real-time measuring modules of tower machine top change of pitch angle, report to the police and writing function.Device of the present invention avoids the generation of the tower machine accident that the signal because of hoisting moment signal acquisition module does not cause by verifying or lost efficacy.

Description

A kind of method and apparatus verifying tower crane hoisting moment signal

Technical field

Patent of the present invention relates to a kind of method and apparatus verifying tower crane hoisting moment signal, belongs to the technical field of tower crane safety monitoring.

Technical background

Along with the development of urban construction and the increase of high-rise, construction site tower crane, the use amount being called for short tower machine is on the increase, and the industrial accident relating to tower machine happens occasionally.

Hoisting moment is less than the important leverage that rated value is tower machine trouble free service, if hoisting moment is excessive easily cause great tower machine accident.Current domestic a lot of tower machine is destroyed hoisting moment detecting device by artificial, or hoisting moment detecting device is because of the inefficacy caused in bad repair for a long time, therefore ensures that the accuracy gathering tower machine hoisting moment data is most important.

Current, the art only uses the device of tower machine limiter of moment to carry out insurance to the moment of tower machine and arranges, but the method and apparatus not having dedicated Authentication hoisting moment signal whether correct.But wherein said tower machine limiter of moment is when moment exceedes specified value, send alerting signal, realize the restriction to moment, if destroyed by artificial, or hoisting moment detecting device is because in bad repair causing lost efficacy for a long time, then cannot ensure the accuracy gathering tower machine hoisting moment data.

Therefore, current not dedicated Authentication tower crane hoisting moment signal whether accurately method and apparatus.

Body top inclination signal is corresponding with tower machine lifted load, and imitated body top inclination signal only changes tower machine lifted load, and people is difficult to copy out the body top inclination signal intensity rule corresponding with lifted load.So, utilize the validity of body top inclination signal authentication tower machine hoisting moment signal to have objectivity, credibility.

Summary of the invention

For the problems referred to above, the invention provides a kind of method verifying tower crane hoisting moment signal.

Present invention also offers the device of above-mentioned checking tower crane hoisting moment signal.The method of the invention and device verify hoisting moment signal by measuring the change of body top inclination in tower machine upper rotary moving coordinate system.Checking and the checking display of conclusion, warning and the writing function of hoisting moment signal is realized by the real-time measuring modules of tower machine top change of pitch angle.

Technical scheme of the present invention is as follows:

Verify a method for tower crane hoisting moment signal,

According to the relation between tower machine body top inclination θ and tower machine hoisting moment M as formula (1):

$\mathrm{\θ}=\frac{\mathrm{Ml}}{\mathrm{EI}}---\left(1\right)$

$M=\frac{\mathrm{\θEI}}{l}---\left(2\right)$

In formula (1) and formula (2), M is hoisting moment, and l is tower body height, and E is the modulus of elasticity of tower machine tower body, and I is the moment of inertia of cross-section of tower machine tower body;

Obtain the normal hoisting moment M of actual measurement _r, and meet following relation:

M ₀＜M _i＜M ₁

Wherein, M ₀for tower machine hoisting moment is zero, M _ifor the specified hoisting moment of tower machine;

Obtain the normal hoisting moment M of actual measurement _itime body top inclination measured value be θ _jaccording to formula (2), calculate θ _jcorresponding hoisting moment M _j

$M_j=\frac{{\mathrm{\θ}}_j\mathrm{EI}}{l};$

Judge the normal hoisting moment M of actual measurement _iwhether be verified:

When | M _i-Mx| < det wherein det is the scope of threshold value, described threshold value det: (5% × M _j) ~ (1O% × M _i) the hoisting moment signal authentication of then surveying passes through; Otherwise the hoisting moment signal authentication of actual measurement is not passed through.

Preferred according to the present invention, when the hoisting moment signal authentication of surveying is not passed through:

If tower machine is in serviceable condition, and when only having hoisting moment signal intensity, then, tower machine hoisting moment Signal Fail, prompting checks hoisting moment signal acquisition module; Described tower machine is in inspection conclusion that serviceable condition refers to that the relevant unit with qualification or individual provide to judge whether tower machine is in serviceable condition, belongs to prior art;

Otherwise tower machine hoisting moment signal is effective, points out and checks tower machine comprehensively.

Realize a device for above-mentioned checking tower crane hoisting capacity range signal method, comprise hoisting moment signal acquisition module, obliquity sensor and display record alarm module;

Described hoisting moment signal acquisition module realizes the collection to tower machine hoisting moment signal;

Described obliquity sensor realizes the measurement to tower machine body top inclination;

Signal data is transferred to display alarm logging modle by cable by described hoisting moment signal acquisition module and described obliquity sensor;

The reception of described display record alarm module then complete paired data, and data are processed according to described checking tower crane hoisting capacity range signal method, and in real time display actual measurement to tower machine hoisting moment, display actual measurement in real time to tower machine hoisting moment signal whether by checking, according to actual measurement to tower machine hoisting moment signal whether effectively respectively sound and light alarm prompting check that hoisting moment signal acquisition module or prompting check tower machine comprehensively.Device of the present invention avoids the generation of the tower machine accident that the signal because of hoisting moment signal acquisition module does not cause by verifying or lost efficacy.

Preferred according to the present invention, described obliquity sensor is Stiffness tester, and described Stiffness tester is the Anti-tipping monitor for tower crane that Chinese patent ZL200720030472.7 records.

Preferred according to the present invention, described hoisting moment signal acquisition module is FKDX-L type limiter of moment.

Advantage of the present invention is:

The present invention is directed to current, both tower crane hoisting moment signal whether accurately effective ways had not been verified, the technical situation of corresponding demo plant is not had yet, the validity of body top inclination signal authentication tower crane hoisting moment signal is utilized to have objectivity, credibility, disclose a kind of method and apparatus verifying tower crane hoisting moment signal, realized checking and the checking display of conclusion, warning and the writing function of hoisting moment signal by the real-time measuring modules of tower machine top change of pitch angle.Device of the present invention avoids the generation of the tower machine accident that the signal because of hoisting moment signal acquisition module does not cause by verifying or lost efficacy.

Accompanying drawing explanation

Fig. 1 is coordinate principle schematic;

Fig. 2 is principle of the invention model schematic;

Fig. 3 is the installation site figure of device of the present invention;

Fig. 4 is Stiffness tester mounting structure figure of the present invention;

Fig. 5 is display record alarm module display schematic diagram;

Wherein, 1. anchor ear, 2. main limb, 3. hold-down bolt, 4. obliquity sensor, 5. display alarm logging modle, 6. hoisting moment signal acquisition module, 7. power light, 8. hoisting moment signal authentication is by indicator lamp, and 9. hoisting moment signal authentication is not passed through, detecting device Indication of Losing Efficacy lamp, 10. hoisting moment signal authentication is not passed through, and reminds and checks indicator lamp comprehensively.

Detailed description of the invention

Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited thereto.

Embodiment 1,

Verify a method for tower crane hoisting moment signal,

According to the relation between tower machine body top inclination θ and tower machine hoisting moment M as formula (1):

$\mathrm{\&theta;}=\frac{\mathrm{Ml}}{\mathrm{EI}}---\left(1\right)$

$M=\frac{\mathrm{\&theta;EI}}{l}---\left(2\right)$

In formula (1) and formula (2), M is hoisting moment, and l is tower body height, and E is the modulus of elasticity of tower machine tower body, and I is the moment of inertia of cross-section of tower machine tower body;

Obtain the normal hoisting moment M of actual measurement _t, and meet following relation:

M ₀＜M _i＜M ₁

Wherein, M ₀for tower machine hoisting moment is zero, M _ifor the specified hoisting moment of tower machine;

Obtain the normal hoisting moment M of actual measurement _itime body top inclination measured value be θ _jaccording to formula (2), calculate θ _jcorresponding hoisting moment M _j

$M_j=\frac{{\mathrm{\&theta;}}_j\mathrm{EI}}{l};$

Judge the normal hoisting moment M of actual measurement _iwhether be verified:

When | M _i-M _j| < det wherein det is threshold value, described threshold value det. (5% × M _j), then the hoisting moment signal authentication of surveying is passed through; Otherwise the hoisting moment signal authentication of actual measurement is not passed through.

As Fig. 1, set two system of axess, a coordinate origin O is the center-point of tower body at ground constant cross-section, and coordinate axle X positive dirction is ground north orientation, coordinate axle Y positive dirction be ground west to, coordinate axle Z positive dirction is perpendicular to ground upwards; Another moving coordinate system initial point O _τfor the intersection point of the straight line of tower body top pivoting support plane of rotation with mistake O point and perpendicular to ground, coordinate axle X _tpositive dirction be crane arm axis away from tower body direction (amplitude augment direction), coordinate axle Z _tpositive dirction is perpendicular to ground upwards, coordinate axle Y _tliterary composition positive dirction is perpendicular to crane arm axis and X _t, Z _taxle meets right-hand rule, OO _tperpendicular to ground.

At O _txtY _tz _tthe O died in system of axes _tx _ty _tplane, tower body top end points is at O _tx _yy _tthe projection of plane will show as a point, and the change at inclination angle, top is at O _tx _ty _tplane performance is the change of this point coordinate.Following formula just can calculate inclination angle:

$\tan \mathrm{\&theta;}=\frac{\sqrt{{{\mathrm{\&theta;}}_x}^2+{{\mathrm{\&theta;}}_y}^2}}{l}.$

Embodiment 2,

A kind of method verifying tower crane hoisting moment signal as described in Example 1, its difference is, when the hoisting moment signal authentication of surveying is not passed through:

If tower machine is in serviceable condition, and when only having hoisting moment signal intensity, then, tower machine hoisting moment Signal Fail, prompting checks hoisting moment signal acquisition module; Described tower machine is in inspection conclusion that serviceable condition refers to that the relevant unit with qualification or individual provide to judge whether tower machine is in serviceable condition, belongs to prior art;

Otherwise tower machine hoisting moment signal is effective, points out and checks tower machine comprehensively.

Embodiment 3,

Realize the device verifying tower crane hoisting capacity range signal method as described in embodiment 1,2, comprise hoisting moment signal acquisition module, obliquity sensor and display record alarm module;

Described hoisting moment signal acquisition module realizes the collection to tower machine hoisting moment signal;

Described obliquity sensor realizes the measurement to tower machine body top inclination;

Signal data is transferred to display alarm logging modle by cable by described hoisting moment signal acquisition module and described obliquity sensor;

The reception of described display record alarm module then complete paired data, and data are processed according to described checking tower crane hoisting capacity range signal method, and in real time display actual measurement to tower machine hoisting moment, display actual measurement in real time to tower machine hoisting moment signal whether by checking, according to actual measurement to tower machine hoisting moment signal whether effectively respectively sound and light alarm prompting check that hoisting moment signal acquisition module or prompting check tower machine comprehensively.

Described obliquity sensor is Stiffness tester, and described Stiffness tester is the Anti-tipping monitor for tower crane that Chinese patent ZL200720030472.7 records.

Described hoisting moment signal acquisition module is FKDX-L type limiter of moment.

As Fig. 4, Stiffness tester is stuck on the main limb of revolution by its V-type mouth, and is fixedly connected with the main limb 2 of revolution by anchor ear 1 and hold-down bolt 3, along with body top inclination value is measured in the revolution of slewing tower in real time, and real-time data transmission is given display record alarm module.

Hoisting moment signal pickup assembly is embedded on display record alarm module 5, and by cable, the hoisting moment Signal transmissions collected is recorded alarm module to display.

As Fig. 5, display record alarm module be installed in driver's cab, show the current hoisting moment correlation parameter of tower machine and hoisting moment signal authentication result in real time to driver, and when hoisting moment Signal Fail automatic sound-light alarm.

Embodiment 4,

Verify a method for tower crane hoisting moment signal as described in Example 1, its difference is, described threshold value det:(10% × M _j).

Embodiment 5,

Verify a method for tower crane hoisting moment signal as described in Example 1, its difference is, described threshold value det:(8% × M _j).

Claims (4)

1. verify a method for tower crane hoisting moment signal,

According to the relation between tower machine body top inclination θ and tower machine hoisting moment M as formula (1):

$\mathrm{\&theta;}=\frac{Ml}{EI}---\left(1\right)$

$M=\frac{\mathrm{\&theta;}EI}{l}---\left(2\right)$

In formula (1) and formula (2), M is hoisting moment, and l is tower body height, and E is the modulus of elasticity of tower machine tower body, and I is the moment of inertia of cross-section of tower machine tower body;

Obtain the normal hoisting moment M of actual measurement _i, and meet following relation:

M ₀＜M _i＜M _l

Wherein, M ₀for tower machine hoisting moment is zero, M _lfor the specified hoisting moment of tower machine;

Obtain the normal hoisting moment M of actual measurement _itime body top inclination measured value be θ _j, according to formula (2), calculate θ _jcorresponding hoisting moment M _j,

$M_j=\frac{{\mathrm{\&theta;}}_{j}EI}{l};$

Judge the normal hoisting moment M of actual measurement _iwhether be verified:

When | M _i-M _j| < det, wherein det is the scope of threshold value, described threshold value det: (5% × M _j) ~ (10% × M _j), then the hoisting moment signal authentication of surveying is passed through; Otherwise the hoisting moment signal authentication of actual measurement is not passed through.

2. a kind of method verifying tower crane hoisting moment signal according to claim 1, is characterized in that, when the hoisting moment signal authentication of surveying is not passed through:

If tower machine is in serviceable condition, and when only having hoisting moment signal intensity, then, tower machine hoisting moment Signal Fail, prompting checks hoisting moment signal acquisition module;

Otherwise tower machine hoisting moment signal is effective, points out and checks tower machine comprehensively.

3. realize a device for the method verifying tower crane hoisting moment signal as claimed in claim 1 or 2, it is characterized in that, this device comprises hoisting moment signal acquisition module, obliquity sensor and display record alarm module;

Described hoisting moment signal acquisition module realizes the collection to tower machine hoisting moment signal;

Described obliquity sensor realizes the measurement to tower machine body top inclination;

Signal data is transferred to display alarm logging modle by cable by described hoisting moment signal acquisition module and described obliquity sensor;

The reception of described display record alarm module then complete paired data, and data are processed according to described checking tower crane hoisting capacity range signal method, and in real time display actual measurement to tower machine hoisting moment, display actual measurement in real time to tower machine hoisting moment signal whether by checking, according to actual measurement to tower machine hoisting moment signal whether effectively respectively sound and light alarm prompting check that hoisting moment signal acquisition module or prompting check tower machine comprehensively.

4. a kind of device verifying the method for tower crane hoisting moment signal as claimed in claim 3, it is characterized in that, described hoisting moment signal acquisition module is FKDX-L type limiter of moment.