CN202107449U - Pivot angle measurement and display device for double-rising double-lifting-appliance bridge crane - Google Patents

Abstract

A pivot angle measurement and display device for double-rising double-lifting-appliance bridge crane comprises a carrying platform which is arranged at the bottom of a trolley. A sleeve is vertically arranged in the carrying platform, a lifting rope of the trolley penetrates through the sleeve, the sleeve swings with the lifting rope, and the outer wall of the sleeve is connected with the carrying platform through a spring group. Two magnet poles are arranged in the carrying platform, the magnet field direction of each magnet pole is in the horizontal plane, and the magnet directions of the two magnet pole groups are perpendicular. A pair of conductive bars is arranged along the vertical direction, the conductive bars cut magnetic induction lines in magnet fields of the magnet pole groups with the swinging of the sleeve, and two ends of each conductive bar is connected with a signal processing device through wires. The signal processing device comprises a voltage amplifier, a filter, an analog/digital convertor and a computer which are sequentially connected. The computer is connected with a display device in cab of the crane. The detection and display of pivot angle of the lifting appliance with the electromagnetic induction principle is low in cost, reliable to use and easy to maintain.

Description

Two two suspender bridge crane deflection angle measurements and read out instruments of hoisting

Technical field

The utility model relates to a kind of two two suspender bridge crane deflection angle measurements and read out instrument of hoisting.

Background technology

Because two two suspender bridge cranes that hoist have two suspenders that hoist, and can work simultaneously, thereby improve the handling efficiency of freight container.But this two two suspender bridge crane system architectures that hoist are complicated, and mode of operation is various.Because this novel bridge crane has two suspenders that can hoist separately, detect for the suspender pivot angle and bring very big difficulty.

Existing bridge crane detecting device all is to single suspender bridge crane design-calculated, and they have all adopted the detecting instrument of more complicated to the detection of suspender pivot angle, and cost is high, safeguards inconveniently, and accuracy is low.And this type detecting device is not suitable for two suspender bridge cranes are carried out the pivot angle detection.Simultaneously, existing container handling crane operator often obtains its swing situation through visual suspender and load, and this method not only accuracy is low but also very easily cause work fatigue, influences work efficiency and workmanship.

The utility model content

In order to address the above problem, the utility model provides a kind of two two suspender bridge crane deflection angle measurements and read out instrument of hoisting,

The utility model is that the technical scheme that its technical matters of solution is adopted is,

Two two suspender bridge crane deflection angle measurements and read out instruments of hoisting include the lift-launch platform, and said lift-launch platform is arranged at the dolly bottom; Carry the sleeve that vertical setting is arranged in the platform, said sleeve is the non-metal sleeve, and the lifting rope of dolly passes from sleeve; Sleeve is swung with the swing of lifting rope, and sleeve outer wall is connected with the lift-launch platform through spring assembly, carries in the platform and also is provided with two magnetic pole set; The magnetic direction of each magnetic pole set is positioned at horizontal surface; The magnetic direction of two magnetic pole set is orthogonal, vertically is provided with the pair of conductors rod on the sleeve, and stub is with swing cutting magnetic induction line in the magnetic field of magnetic pole set of sleeve; Each stub two ends is connected to signal processor unit through lead; Signal processor unit includes bonded assembly voltage amplifier, filter, analog/digital converter and computing machine in order, and computing machine is connected to the read out instrument in the hoisting box, and said computing machine also is connected with the anti-control setup that shakes.

Said spring assembly includes four symmetrically arranged springs, and spring one end is connected the upper end of sleeve outer wall, and the other end is connected the upper end of carrying the platform inwall.

Bridge crane major part in using now all is the bridge crane system that singly hoists, and is main with manual operations, does not use the deflection angle measurement device, also the swing situation of suspender and load is not shown to the freight container operator intuitively; Be in order to reach better operating effect in some van container bridge crane systems; Improve handling efficiency; Some mechanical anti roll devices and electronic anti-swinging device have been installed; But these are not automation bridge crane systems, promptly all fundamentally do not realize the automatic guidance (promptly anti-automatically shaking controlled and positioning control) of bridge crane operation.In some reports recently; Some mechanisms have carried out to anti-research and the application of shaking with load orientation control of the bridge crane load that singly hoists, and in these bridge crane control system, have generally adopted the detecting devices such as Laser Goniometer, angular transducer of more complicated to realize the detection of load pivot angle, and these detecting devices cost an arm and a leg; Use complicated; Poor anti jamming capability is safeguarded also inconvenience, and what have also has specific (special) requirements (just to require operating environment condition good such as adopting laser to carry out angle identification to environment for use; Dustless no rain do not have natural conditions such as block), these have all limited the application of angle detection device.

The utility model adopts electromagnetic induction principle to carry out the detection and the demonstration of suspender pivot angle, and cost is low, uses reliably, safeguards simply, and is less demanding to working environment, overcome the problems referred to above fully.What is more important; No matter existing bridge crane swing angle detection device is from structure or from function; All be to the bridge crane design-calculated with a suspender, existing single suspender bridge crane swing angle detection device much is not suitable for solving the pivot angle detection problem of two suspender bridge cranes.

The beneficial effect of the utility model is; This device is according to electromagnetic induction principle; Through detection and processing to the information of voltage at the suspender lifting rope two ends of cutting magnetic line, obtain the pivot angle information of suspender and freight container through corresponding calculated, this pivot angle information may be displayed on the read out instrument of hoisting box; Supply container handling crane operator's reference, thereby improve operator's workmanship and work efficiency and alleviate work load.Have simple in structure, advantage such as accuracy is high, and is easy to maintenance, cheap.

Description of drawings

Fig. 1 is the installation site scheme drawing of two hoist two suspender bridge crane deflection angle measurements and read out instruments;

Fig. 2 is the structural representation of two hoist two suspender bridge crane deflection angle measurements and read out instruments;

Fig. 3 is the birds-eye view of two hoist two suspender bridge crane deflection angle measurements and read out instruments;

Fig. 4 is a stub cutting magnetic field scheme drawing;

Fig. 5 is the structural representation of signal processor unit;

Fig. 6 is the motion scheme drawing of stub 26;

Fig. 7 is the motion scheme drawing of stub 27.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand with effect and understand, below in conjunction with illustrating and specific embodiment, further set forth the utility model.

In Fig. 1, dolly 1 is as the lift-launch platform of two hoist two suspender deflection angle measurements and the read out instrument and the lifting motors of the utility model proposition, and driver train 3 driving trolley 1 are moved; Driver train 8 drives carts 4 actions, and lifting motor 2,12 is responsible for the dipping and heaving of suspenders and load, two of bridge crane independently suspender 5,11 can work simultaneously; Also can work respectively, once can load and unload two 40 forty equivalent unit 40s or 4 20 forty equivalent unit 40s simultaneously, freight container 6,10 is the load of suspender; Truck 7,9 delivery containers; Deflection angle measurement device 13 is positioned at the lower end of dolly 1, and lifting rope 14 is sling suspender 5,11, and signal processor unit 28 is positioned at the top of dolly 1; Hoisting box 15 is positioned at cart 4, and the amplification assumption diagram of deflection angle measurement and read out instrument 13 is seen Fig. 2.

In Fig. 2, Fig. 3, sleeve 18 is the non-metal sleeve, and lifting rope 14 therefrom passes; Require lifting rope 14 very little, make that lifting rope 14 just can free up-and-down movement in sleeve 18, when lifting rope 14 is swung, can drive sleeve 18 and swing together with the gap between the sleeve 18; The upper end of carrying platform 23 is fixed on dolly 1 bottom, and spring 19 is used for sleeve 18 is fixed on the lift-launch platform 23, makes that sleeve 18 can be in movement in vertical direction; Magnetic pole set 21,22 sizes are identical, require magnetic pole set 21 and magnetic pole set 22 not in same horizontal surface, and have certain distance to make that the magnetic interference between them is as far as possible little in vertical direction; Stub 26,27 sticks on the sleeve 18, and the two model is identical, along with sleeve 18 cutting magnetic line in magnetic field; Mutual insulating between the two; Stub 26 is responsible for measuring the pivot angle on parallel and the paper direction, and the pivot angle that stub 27 is responsible on measuring vertical and the paper direction, lead 20 are responsible for the voltage signal at the stub two ends of cutting magnetic field is introduced in the signal processor unit 28.

Cart or the startup of dolly, acceleration, deceleration and external interference factors such as (like winds) can make freight container produce swing; Simultaneously also make lifting rope swing together in company with freight container; The swing of lifting rope can drive sleeve and swing together; Because sleeve is fixed on by spring and carries above the platform, so sleeve will drive the magnetic line of force that stub cutting magnetic pole set produces in horizontal surface.Can know that by electromagnetic induction principle conductor 26,27 two ends can produce voltage difference respectively.Through lead 20 voltage signal is introduced in the signal processor unit 28.Require signal processor unit 28 to have the ability of handling two paths of signals simultaneously.

The motion process of conductor 26,27 in magnetic field is following:

As shown in Figure 4; The magnetic induction density of supposing the magnetic field that group of magnets 21 produces is B, and the length of stub 26 is l, and the distance of putting point to lifting rope by the stub lower end is L; The diagram maximum pendulum angle of lifting rope constantly is θ; Acceleration due to gravity is g, and the voltage signal at the conductor two ends that record is ε, can get following formula by the law of electromagnetic induction so:

$\sin \mathrm{\&theta;}=\frac{\mathrm{\&epsiv;}}{{\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="HDA0000069539180000011.png"\; state="\{\{state\}\}">B</figure-callout>}}^2{\mathrm{<figure-callout\; id="3"\; label="gl"\; filenames="HDA0000069539180000011.png,HDA0000069539180000031.png"\; state="\{\{state\}\}">gl</figure-callout>}}^3}\sqrt{{2\mathrm{<figure-callout\; id="2"\; label="B"\; filenames="HDA0000069539180000011.png"\; state="\{\{state\}\}">B</figure-callout>}}^2{\mathrm{gl}}^3-{\mathrm{\&epsiv;}}^2}$ $(0<\mathrm{\&theta;}<\frac{1}{2}\mathrm{\&pi;})---\left(1\right)$

Can obtain the relation of pivot angle θ and voltage ε through following formula.Utilize this relational expression, can obtain the exact value of lifting rope swing angle through the processing of computing machine.

Among Fig. 5; Voltage amplifier is accepted the voltage signal ε that lead 20 is sent here; With carrying out Filtering Processing in this voltage signal amplification back introducing filter; Send into through voltage signal after the amplification filtering and to convert digital signal among the ADC (analog/digital converter) to and send in the computing machine and handle, signal after treatment can be delivered to and supply operator's reference on the operator's compartment read out instrument, also can be used as feedback signal and sends into anti-shaking in the control setup.

When two suspenders of two suspender bridge cranes are operated in interlocking pattern following time, the voltage signal that obtains from two suspenders will be mutually as with reference to handling the entering signal processing equipment together; When two suspenders of two suspender bridge cranes are operated in stand-alone mode following time, the two-way voltage signal that will obtain from two suspenders, this two paths of signals is sent in the signal processor unit and is handled respectively, obtains two suspenders pivot angle size separately.

Concrete working process is following:

In the magnetic field that magnetic pole set 21 produces; The sense of motion of supposing stub 26 is as shown in Figure 6; And the direction of establishing this moment is a positive dirction; The pivot angle of being tried to achieve by (1) formula so is a lifting rope swing angle in parallel and the angle component paper direction, and the pivot angle of note this moment is being for just, when lifting rope ask during along the reversing sense of direction shown in Figure 6 pivot angle for bearing.In the magnetic field that magnetic pole set 22 produces; The sense of motion of supposing stub 27 is as shown in Figure 7; And the direction of establishing this moment is a positive dirction; The pivot angle of being tried to achieve by (1) formula so is a lifting rope swing angle in angle component vertical and the paper direction, and same note pivot angle this moment is being for just, when lifting rope ask during along the reversing sense of direction shown in Figure 7 pivot angle is to bear.Component value on the both direction sent in the signal processor unit respectively go, will obtain final pivot angle value through behind the compose operation.Meanwhile, on the another one suspender, will carry out same process, obtain the pivot angle value of another suspender.

When two suspenders were operated in the interlocking pattern, two pivot angle values that obtain in theory should be identical; If different, will carry out the revision of pivot angle as contrast mutually so, this is operated in the computing machine and carries out.When two suspenders are operated in stand-alone mode following time, the pivot angle of two suspenders is independent of each other, and obtains two angles respectively.

The signal of two suspenders is sent on the read-out in the hoisting box through after the Computer Processing, carries out dynamic solid and shows.The craneman can judge the swing situation of two suspenders of current time intuitively according to this picture, and then makes corresponding adjusting.Perhaps signal is sent into anti-shaking in the control setup as feedback signal, the anti-control setup that shakes can utilize this feedback signal to carry out the automatic anti-control of shaking of suspender.

Two two suspender bridge crane deflection angle measurements and read out instrument employing electromagnetic induction principles of hoisting that the utility model provides have solved the detection of the pendulum angle of two two suspenders of bridge crane that hoist, the pivot angle information processing and the demonstration problem of two suspenders.Do not need extra other sensor or detecting device; Only produce magnetic field with two pairs of magnet; Two conductors are cutting magnetic field and produce voltage signal respectively; Signal amplifier amplifies voltage signal, the voltage signal that Computer Processing obtains, and last display unit is shown to the craneman with the pivot angle information that obtains.

More than show and described the advantage of groundwork, principal character and the utility model of the utility model.The technical personnel of the industry should be understood; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification sheets that the utility model just is described; The utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.

Claims (4)

1. two two suspender bridge crane deflection angle measurements and read out instruments of hoisting include the lift-launch platform, and said lift-launch platform is arranged at the dolly bottom; It is characterized in that carry the sleeve that vertical setting is arranged in the platform, the lifting rope of dolly passes from sleeve; Sleeve is swung with the swing of lifting rope; Sleeve outer wall is connected with the lift-launch platform through spring assembly, carries in the platform and also is provided with two magnetic pole set, and the magnetic direction of each magnetic pole set is positioned at horizontal surface; The magnetic direction of two magnetic pole set is orthogonal; Vertically be provided with the pair of conductors rod on the sleeve, stub is with swing cutting magnetic induction line in the magnetic field of magnetic pole set of sleeve, and each stub two ends is connected to signal processor unit through lead; Signal processor unit includes bonded assembly voltage amplifier, filter, analog/digital converter and computing machine in order, and computing machine is connected to the read out instrument in the hoisting box.

2. two two suspender bridge crane deflection angle measurements and read out instrument of hoisting according to claim 1 is characterized in that said sleeve is the non-metal sleeve.

3. two two suspender bridge crane deflection angle measurements and read out instrument of hoisting according to claim 1; It is characterized in that; Said spring assembly includes four symmetrically arranged springs, and spring one end is connected the upper end of sleeve outer wall, and the other end is connected the upper end of carrying the platform inwall.

4. two two suspender bridge crane deflection angle measurements and read out instrument of hoisting according to claim 1 is characterized in that said computing machine also is connected with the anti-control setup that shakes.

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