CN106017753A - Intelligent detection system for container F-TR lock disengagement - Google Patents

Abstract

The invention discloses an intelligent detection system for container F-TR lock disengagement. The system comprises four tension sensors connected to a lifting appliance special for a container and a signal recognition processor connected with the tension sensors. The signal recognition processor collects tension values of the four tension sensors, when the difference between a tension changing value of a certain tension sensor and a tension changing value of another or several tension sensors exceeds a set threshold value, it is detected that F-TR locks vertically corresponding to the tension sensors of the container are disengaged abnormally, rapid alarm reminding is achieved or the lifting appliance special for the container is controlled to automatically stop lifting, and accidents are avoided. The intelligent detection system is simple in structure, convenient to use and operate, accurate in detection effect, and capable of effectively solving the problem that the transport vehicle bogie is damaged or a serious accident happens on a transport vehicle due to the fact that the F-TR lock is abnormally disengaged.

Description

Container F-TR lock departs from intelligent checking system

Technical field

The present invention relates to container unloading lifting field, specifically a kind of container F-TR lock departs from intelligence inspection Examining system.

Background technology

For transporting the F-TR of the settings such as the F-TR type container railway special flat car of container, truck trailer Locking angle part (hereinafter referred to as " F-TR lock ") Main Function is firmly to be locked on vehicle by container, it is ensured that collection Process of container transportation is not moved.When flat car special used for container F-TR lock and hole, container location (collection Four feet of vanning are provided with four corner fittings, as fixing and lifting eye, are called for short in " hole, container location ") Be connected to lifting spreader sling container time break down, flat car special used for container can be caused In four F-TR lock some or certain several cannot normally depart from, lifting spreader can be by container Together sling with haulage vehicle, cause the damage of haulage vehicle bogie or cause haulage vehicle to occur seriously Accident.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of container F-TR lock and departs from intelligent checking system, Its four pulling force sensors can occur value of thrust to change, when some draws when lifting spreader lifts by crane The tension variations value of force transducer exceedes setting threshold with the departure of another one or several tension variations values Value, i.e. detection learn that container F-TR lock the most normally departs from, it is achieved Rapid Alarm is reminded.

The technical scheme is that

Container F-TR lock departs from intelligent checking system, includes four be connected on lifting spreader Individual pulling force sensor, the signal recognition processor being connected with pulling force sensor.

Described signal recognition processor with alarm or/and the controller of lifting spreader is connected.

Four described pulling force sensors pass sequentially through signal amplification processor, signal output module and signal Recognition processor connects.

Described pulling force sensor selects pillar strain transducer, include load pillar beam and two double should Becoming the resistance strain gage of sheet, the middle part of load pillar beam is provided with two corresponding blind holes, two blind holes Coaxial and radial symmetric along load pillar beam, the load pillar beam of two blind hole place parts is I-beam Structure, two resistance strain gages are adhered to the middle part of two blind holes respectively.

Two foil gauges in the resistance strain gage of described double foil gauges form semi-bridge type foil gauge structure, The resistance strain gage of two double foil gauges connects composition work electric bridge.

Advantages of the present invention:

Signal recognition processor of the present invention gathers the value of thrust of four pulling force sensors, when some pulling force passes The tension variations value of sensor exceedes setting threshold value with the departure of another one or several tension variations values, I.e. detection learns that the F-TR lock that container is the most corresponding with this pulling force sensor the most normally departs from, it is achieved quickly Warning reminding or control lifting spreader are automatically stopped lifting, it is to avoid the generation of accident.The present invention ties Structure is simple, it is easy to operate to use, and Detection results is accurate, can be prevented effectively from F-TR lock when the most normally departing from, Cause the problem damaged or cause haulage vehicle generation major accident of haulage vehicle bogie.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of the present invention.

Fig. 2 is the theory diagram of the present invention.

Fig. 3 is the generalized section of load pillar beam of the present invention.

Fig. 4 is the structural representation of semibridge system foil gauge of the present invention.

Fig. 5 is that the present invention works the structural representation of electric bridge.

Fig. 6 is the mechanical model schematic diagram of load pillar beam of the present invention.

Fig. 7 is position, strain regions and the stress envelope of load pillar beam I-beam part of the present invention.

Fig. 8 is four pulling force sensor value of thrust P T in time in the case of the normal disengaging of F-TR of the present invention lock Change curve.

Fig. 9 is that 4#F-TR of the present invention lock is normal depart from the case of four pulling force sensor value of thrust P at any time Between the change curve of T.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.

See that Fig. 1, container F-TR lock departs from intelligent checking system, include and be connected to container Special-purpose hanger Four pulling force sensors 01 on tool 06, the signal recognition processor 02 being connected with pulling force sensor 01.

Seeing Fig. 2, four pulling force sensors 01 pass sequentially through signal amplification processor 03, signal output module 04 is connected with signal recognition processor 02, signal recognition processor 02 with alarm 05 or/and container The controller of special hanger 06 connects.

Pulling force sensor selects pillar strain transducer, includes load pillar beam 11 and two double foil gauges Resistance strain gage 12, see that Fig. 3, the middle part of load pillar beam 11 are provided with two corresponding blind holes 13, Two blind holes 13 are coaxial and radial symmetric along load pillar beam 11, the load of two blind hole 13 place parts He Zhushiliang is structural I-beam, and two resistance strain gages 12 are adhered to the middle part of two blind holes 13 respectively.

Seeing Fig. 4, two foil gauges in the resistance strain gage of double foil gauges form semi-bridge type foil gauge structure, Seeing Fig. 5, the resistance strain gage of two double foil gauges connects composition work electric bridge, and pulling force sensor 01 is in work Foil gauge R when making, in resistance strain gage₁By positive shearing force, that R₂Also by negative shearing force, and another R in one foil gauge₃By positive shearing force, R₄By negative shearing force, when adding a voltage at 1,3 ends, Then export at 2,4 liang of voltages having a positive specific force.

1., pulling force sensor can be simplified to two ends stress and concentrate stretching or load pillar beam, mechanical model shows Suggestion Fig. 6.

2., the pillar stress beam of middle stress load effect calculates:

$S=\frac{P}{A};---\left(1\right),$

Wherein, S represent quiet away from, P represents stretching force, A form nominal area.

3., shear stress and the shearing strain of beam calculates:

Shear beam sensor at flex point E of strain beam, generally individually add two blind holes, be partially formed I-shaped Beam, its shear stress can calculate with Nikolay Zhuravsky formula:

$\mathrm{\τ}=\frac{{\mathrm{QS}}_y}{J_{y}b},---\left(2\right),$

Wherein, τ represents cross section shear stress,_bRepresent the distance between two blind holes；

The position, strain regions of structural I-beam and stress distribution such as Fig. 7 such as shows.

In formula (2):

Shearing Q is:

Shearing section static moment S to axis_yFor:

Shearing section moments of inertia J to axis_yFor:

Then

$r_{max}=\frac{3(1+\mathrm{\μ})P}{2bE}\·\frac{B(H^2-h^2)+{\mathrm{bh}}^2}{B(H^3-h^3)+{\mathrm{bh}}^3}---\left(7\right),$

Wherein, τ_maxRepresenting maximum shear stress, μ represents proportionality constant, and B is the width of I-beam, and H is I-shaped depth of beam, h is the diameter of blind hole,_bRepresenting the distance between two blind holes, E is young's modulus；

The principal stress in 45 ° of directions and principal strain calculate, and along beam, the length of bobbin directional pressure at 45 ° becomes Change, the principal direction of stress under pure shear shear force state just, its principal stress and maximum shear stress, principal strain with Maximum shear strain in following relationship:

Wherein, σ_45°For normal stress, ε_45°Strain for forward.

4., transducer sensitivity calculates:

$S=\frac{3K(1+\mathrm{\μ})P}{4bE}\·\frac{B(H^2-h^2)+{\mathrm{bh}}^2}{B(H^3-h^3)+{\mathrm{bh}}^3}\×{10}^3(mV/V)---\left(10\right),$

Wherein, K is resistance strain gage sensitivity coefficient.

The hole, container location at four turnings of container base is locked with 1#F-TR lock, 2#F-TR respectively, 3#F-TR Lock and 4#F-TR lock connect, it is ensured that fixing of container, when container needs unloading to depart from, by 1#F-TR Lock, 2#F-TR lock, 3#F-TR lock and 4#F-TR lock depart from hole, container location, container top four The hole, container location at individual turning and four pulling force sensors (1# pulling force sensor, the 2# pulling force of the present invention Sensor, 3# pulling force sensor and 4# pulling force sensor) connect, when lifting spreader lifts by crane packaging During case, each pulling force sensor tension can keep a value of thrust being basically unchanged, and (container is overall Weight and unbalance loading amount the most no longer increase), now system can receive that every sensor provides metastable Detection signal.

Seeing Fig. 8, when normally lifting by crane, four pulling force sensor signal output differences will not be the biggest, it may be assumed that four The value of thrust of four pulling force sensor outputs is not above the departure of 2t；See Fig. 9, when improper lifting Time, four F-TR sensor signal output bias amounts on suspender can be the biggest, it may be assumed that four sensor outputs The value of thrust departure more than 3t (3 pulling force sensor values of thrust of 4# pulling force sensor and other differ More than 3t).4# pulling force sensor be the 4th, container container body value of thrust plus without departing from The weight sum that flatcar vehicle is gradually pulled up.Utilize this overproof value, can be immediately by analyzing circuit Judging that container F-TR lock the most normally departs from, alarm 05 realizes warning function or domination set vanning Special hanger 06 is automatically stopped lifting.

Although an embodiment of the present invention has been shown and described, for those of ordinary skill in the art Speech, it is possible to understand that these embodiments can be carried out without departing from the principles and spirit of the present invention Multiple change, revising, replace and modification, the scope of the present invention is limited by claims and equivalent thereof Fixed.

Claims (5)

1. container F-TR lock departs from intelligent checking system, it is characterised in that: include that to be connected to container special With four pulling force sensors on suspender, the signal recognition processor being connected with pulling force sensor.

Container F-TR the most according to claim 1 lock departs from intelligent checking system, it is characterised in that: Described signal recognition processor with alarm or/and the controller of lifting spreader is connected.

Container F-TR the most according to claim 1 lock departs from intelligent checking system, it is characterised in that: Four described pulling force sensors pass sequentially through signal amplification processor, signal output module and signal identification Processor connects.

Container F-TR the most according to claim 1 lock departs from intelligent checking system, it is characterised in that: Described pulling force sensor selects pillar strain transducer, includes load pillar beam and two double foil gauges Resistance strain gage, the middle part of load pillar beam is provided with two corresponding blind holes, and two blind holes are coaxial And along the radial symmetric of load pillar beam, the load pillar beam of two blind hole place parts is structural I-beam, Two resistance strain gages are adhered to the middle part of two blind holes respectively.

Container F-TR the most according to claim 1 lock departs from intelligent checking system, it is characterised in that: Two foil gauges formation semi-bridge type foil gauge structures in the resistance strain gage of described double foil gauges, two The resistance strain gage of double foil gauges connects composition work electric bridge.