CN206556734U - Container bare weight case automatic detection alarm device - Google Patents
Container bare weight case automatic detection alarm device Download PDFInfo
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- CN206556734U CN206556734U CN201720203615.3U CN201720203615U CN206556734U CN 206556734 U CN206556734 U CN 206556734U CN 201720203615 U CN201720203615 U CN 201720203615U CN 206556734 U CN206556734 U CN 206556734U
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- base
- limiting plate
- alarm device
- compression
- automatic detection
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Abstract
The utility model discloses a kind of container bare weight case automatic detection alarm device, include four other compression and tension sensors being connected on four steel wire ropes of crane, and the detection signal display instrument being connected with four other compression and tension sensors；Detection signal display instrument includes single-chip microcomputer, the display screen and phonetic alarm device that are connected respectively with single-chip microcomputer, and four other compression and tension sensors are connected with single-chip microcomputer.The weight for the container that the utility model is sling by the other compression and tension sensor detection being connected on four steel wire ropes of crane, when weighing less than setting weight value, quickly realizes that audio alert is reminded, and prevents that empty van is placed on flatcar causes security incident.
Description
Technical field
The utility model is related to Container Weight detection means, specifically a kind of container bare weight case automatic detection warning dress
Put.
Background technology
Flat car special used for container one saves compartment, can fill 1 40 feet of container or fill 2 20 feet of packaging
Case.If a section compartment fills 2 20 feet of container, railway transportation provides that the container bare weight case on same flatcar must not
Load in mixture, if container bare weight is loaded in mixture, train is during traveling is turned, due to the effect of centrifugal force, easily cause vehicle and take off
The potential safety hazards such as rail.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of container bare weight case automatic detection alarm device, detection
The container that crane is sling is empty van or loaded van, so as to carry out warning reminding to staff.
The technical solution of the utility model is：
Container bare weight case automatic detection alarm device, includes four sides being connected on four steel wire ropes of crane
Compression and tension sensor, and the detection signal display instrument being connected with four other compression and tension sensors；Described detection signal shows
Show that instrument includes single-chip microcomputer, the display screen and phonetic alarm device that are connected respectively with single-chip microcomputer, four described other compression and tensions
Sensor is connected with single-chip microcomputer；Described other compression and tension sensor includes base and is connected on base and is used to fix steel wire
Be provided with the positioner of rope, the front/rear end of described base two blind holes on relative blind hole, front/rear end it is coaxial and
The axis of base is symmetrical, and the base of part where two blind holes is to be provided with resistance strain gage in structural I-beam, blind hole；
Described positioner is connected to the pilot unit at base both ends and the card postion unit being arranged in the middle part of base including two；Institute
The each pilot unit stated include on H-shaped guide holder and limiting plate, the end of the lower bayonet slot inserted base of H-shaped guide holder and with
Base is fixedly connected, and described limiting plate is connected between two tops of H-shaped guide holder；Described card postion unit includes two
It is connected to the centre strut in the middle part of base upper surface, chuck and is screwed together in the locking nut on each centre strut,
The bottom of chuck is provided with notch steel wire rope neck directed downwardly, and axis of two centre struts along base is symmetrical, lock
Tight dop is connected in two center stand columns and locked by the locking nut above it.
Two blind holes are provided with the front/rear end of described base, two groups of formation is coaxial and symmetrical along base center axis line
Blind hole structure, described resistance strain gage is from two semi-bridge type resistance strain gages, two semi-bridge type resistance strain gages
In two sheet resistance foil gauges be respectively arranged in two coaxial blind holes, and two semi-bridge type resistance in two groups of coaxial blind holes
Foil gauge connection composition work electric bridge.
Two tops of described H-shaped guide holder are respectively connected with spacing column, described limiting plate be connected to two it is spacing vertical
Between post, being screwed together positioned at the top of limiting plate on described each spacing column and has lock nut, described locking
Limiting plate is carried out locking positioning by nut.
Being screwed together positioned at the top of locking nut in described each center stand column has stop nut.
One end of described chuck is provided with dop guide hole, and the other end of chuck is provided with center stand column card
Groove a, center stand column passes through the dop guide hole of chuck, and the center stand column neck of chuck is stuck in another center stand column
It is locked above and by locking nut.
One end of described limiting plate is provided with limiting plate guide hole, and the other end of limiting plate sets limited location column neck, H
A spacing column on shape guide holder passes through the limiting plate guide hole of limiting plate, and the spacing column neck of limiting plate is stuck in another spacing
It is locked on column and by lock nut.
Fall prevention rope is connected with described base.
Advantage of the present utility model：
The container that the utility model is sling by the other compression and tension sensor detection being connected on four steel wire ropes of crane
Weight, when weighing less than setting weight value, quickly realize audio alert remind, prevent on flatcar place empty van cause safety
Accident.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the front view of compression and tension sensor by the utility model.
Fig. 3 is the side view of compression and tension sensor by the utility model.
Fig. 4 is the top view of compression and tension sensor by the utility model.
Fig. 5 is the front view that compression and tension sensor fixes steel wire rope by the utility model.
Fig. 6 is the side view that compression and tension sensor fixes steel wire rope by the utility model.
Fig. 7 is the structural representation of two semi-bridge type resistance strain gages of the utility model.
Fig. 8 is the structural representation of utility model works electric bridge.
Fig. 9 is the strain zone position and stress envelope of the utility model structural I-beam.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
See Fig. 1, container bare weight case automatic detection alarm device includes four and is connected to four steel wire ropes of crane
On other compression and tension sensor 01, and the detection signal display instrument 02 being connected with four other compression and tension sensors 01；Detection
Signal display instrument 02 includes single-chip microcomputer 21, the display screen 22 and phonetic alarm device 23 that are connected respectively with single-chip microcomputer 21, four
Individual other compression and tension sensor 01 is connected with single-chip microcomputer 21；
See Fig. 2-Fig. 6, other compression and tension sensor 01, which includes, to be connected with the base 11 of fall prevention rope 112 and be connected to base 11
Two blind holes 12 are provided with the upper positioner for being used to fix steel wire rope, the front/rear end of base 11, two groups of formation is coaxial
And along the symmetrical blind hole structure of base center axis line, the base of two groups of place parts of blind hole 12 is equal in structural I-beam, blind hole 12
Resistance strain gage is provided with, resistance strain gage is from two semi-bridge type resistance strain gages (see Fig. 7), two semi-bridge type resistance
Two sheet resistance foil gauges in foil gauge are respectively arranged in two coaxial blind holes, and two half-bridges in two groups of coaxial blind holes
Type resistance strain gage connection composition work electric bridge (see Fig. 8)；Positioner includes two guiding for being connected to the both ends of base 11
Unit and the card postion unit for being arranged at the middle part of base 11；Each pilot unit includes H-shaped guide holder 13, two spacing columns 14
With limiting plate 15, it is fixedly connected on the end of the lower bayonet slot inserted base 11 of H-shaped guide holder 13 and with base 11, H-shaped guide holder
13 two tops are connected to a spacing column 14, and limiting plate 15 is connected between two spacing columns 14, and each limit
Being screwed together positioned at the top of limiting plate 15 on the column 14 of position and has lock nut 16, and lock nut 16 carries out limiting plate 15
Locking positioning；Card postion unit include two centre struts 17 being connected in the middle part of the upper surface of base 11, chuck 18 and
It is screwed together in locking nut 19 and stop nut 110 on each centre strut 17, the bottom of chuck 18 is provided with
Notch steel wire rope neck 111 directed downwardly, axis of two centre struts 17 along base 11 is symmetrical, and chuck 18 is connected to two
Locked in individual center stand column 17 and by the locking nut 19 above it, locking nut 19 passes through the stop nut 110 above it
Locking is carried out to fix.
Wherein, one end of chuck 18 is provided with dop guide hole, and the other end of chuck 18 is provided with center stand column
Neck 181 a, center stand column 17 passes through the dop guide hole of chuck 18, and the center stand column neck 181 of chuck is stuck in
It is locked in another center stand column 17 and by locking nut 19；One end of limiting plate 15 is provided with limiting plate guide hole,
The other end of limiting plate 15 sets the spacing column 14 on limited location column neck 151, H-shaped guide holder to pass through limiting plate 15
Limiting plate guide hole, the spacing column neck 151 of limiting plate is stuck on another spacing column 14 and locked by lock nut 16 solid
It is fixed.
The other compression and tension sensor 01 of the present utility model resistance strain gage of two double foil gauges, is pasted onto stressed plate
Both sides, semi-bridge type resistance strain gage is as shown in Figure 7.
See Fig. 8, two two semi-bridge type resistance strain gages connection composition work electric bridges, other compression and tension sensor 01 is working
When, a foil gauge R in resistance strain gage1By positive shearing force, that R2Also by negative shearing force, and the R in another foil gauge3
By positive shearing force, R4By negative shearing force.
R is foil gauge impedance, and other compression and tension sensor 01 can produce deformation when being acted on by external force, cause and be close to
Foil gauge impedance on sensor internal wall is linearly increasedd or decreased.It is defeated in the case where there is externally fed (3-12VDC)
The differential levels mv signals gone out are also linearly increasing to be reduced, after sensor is by a group bridge, zeroing, trim sensitivity, temperature compensation etc., output
Signal=supply voltage x sensitivity.Such as voltage-stabilized power supply is 10VDC, and transducer sensitivity is 1.5mv/V, and sensor is to completely
Voltage=the 10x1.5=15mv exported during range, needs to turn with signal if necessary to 0-5V (4-20mA etc.) standard analog signal
Parallel operation (transmitter).
Basic mechanical principle：
The other overall force measuring structure of compression and tension sensor 01 is shear beam, is the stress measurement mode of elastomer.Sensor by
During to external force pressure, its measurand can be deformed (strain) on object, again can be with extensive after external force is removed
Restore the shape and size of coming, i.e., it is this to be deformed into elastic deformation.Elastomer is to constitute one of fundamental of sensor, its institute
The basic physical property having can be represented with following equation:
A. σ=E × ε, be axial stress strain Hooke's law, i.e. elastomer elastic modulus E determine axial stress σ and
Linear relationship between axial strain ε.
b.ε1=μ × ε, elastomer in addition to producing axial strain ε, is accompanied by transverse direction under above-mentioned responsive to axial force
Strain stress1.Ratio Poisson's ratio μ between the two is party's number.
C. τ=G × γ, is pure shear Hooke's law.When elastomer is by shearing force, by the shear stress on shear surface
The relative angular strain γ produced between τ and section is linear, and depending on the elastic shear modulus G of elastomeric material.
It is above-mentioned；There is following relation between three characterisitic parameters E, G and μ of elastomeric material:G=E/ (2 × (1+ μ)).
The Stress calculation of middle stress load effect
The shear stress of beam and shearing strain are calculated
Shear beam sensor generally adds two blind holes (being partially formed I-beam), its shear stress in the flex point of strain beam
It can be calculated with Nikolay Zhuravsky formula：
Strain zone position and stress distribution such as Fig. 9 of local structural I-beam such as show
In formula:
Shear Q
Static moment S of the shearing section to axisy
Moments of inertia J of the shearing section to axisy
Then
The principal stress and principal strain in 45 ° of directions are calculated, and the length change of bobbin directional pressure at 45 °, exactly pure along along beam
Principal direction of stress under shearing force state, its principal stress and maximum shear stress, principal strain and maximum shear strain in following relationship：
Transducer sensitivity is calculated：
In formula：K-- resistance strain gage sensitivity coefficient.
Operating procedure of the present utility model：
See in Fig. 5 and Fig. 6, the upper neck that steel wire rope 03 is passed through to two top of H-shaped guide holder 13 first, then locking clamp
First 18 rotation, its center stand column neck 181 and the corresponding clamping of center stand column 17, then chuck 18 is along under center stand column 17
Move, the clamping steel wire rope 03 of steel wire rope neck 111 of center stand column 17, then locking nut 19 is screwed until by steel wire with spanner
Rope 03 is compacted with base 11 and locked firmly, and is closed tightly with stop nut 110；Finally will be spacing on two H-shaped guide holders 13
Plate 15 rotates, its spacing column neck 151 and the corresponding spacing clamping of column 14, and passes through the locking of lock nut 16.For
Steel wire rope 03 is not influenceed to freely swing, distance of the limiting plate 15 away from steel wire rope 03 is 5-10mm.
After seeing that Fig. 1, other compression and tension sensor 01 are connected on steel wire rope 03, the other detection of compression and tension sensor 01 force value is then
Single-chip microcomputer 21 is sent to, force value is converted into the weight of container by single-chip microcomputer 21, is then sent to display screen 22 and is shown, when
The weight of the container of detection is within 1t, i.e., steel wire rope does not sling container, and single-chip microcomputer control voice warning device 23 is played
" without hang " voice messaging, when detection container weight in 1t -5t, that is, the container sling is empty van, single-chip microcomputer control language
Sound warning device 23 plays " empty van " voice messaging, is reminded, when detection container weight in more than 5t, that is, sling
Container is loaded van, and single-chip microcomputer control voice warning device 23 plays " loaded van " voice messaging.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. container bare weight case automatic detection alarm device, it is characterised in that：Include four and be connected to four steel of crane
Other compression and tension sensor in cord, and the detection signal display instrument being connected with four other compression and tension sensors；Described
Detection signal display instrument includes single-chip microcomputer, the display screen and phonetic alarm device that are connected respectively with single-chip microcomputer, described four
Individual other compression and tension sensor is connected with single-chip microcomputer；Described other compression and tension sensor, which includes base and is connected on base, to be used
In the positioner of fixed steel wire rope, two are provided with relative blind hole, front/rear end on the front/rear end of described base
Blind hole is coaxial and axis of base is symmetrical, and the base of part where two blind holes is to be provided with structural I-beam, blind hole
Resistance strain gage；Described positioner is connected to the pilot unit at base both ends including two and is arranged in the middle part of base
Card postion unit；Described each pilot unit includes H-shaped guide holder and limiting plate, the lower bayonet slot inserted base of H-shaped guide holder
End on and be fixedly connected with base, described limiting plate is connected between two tops of H-shaped guide holder；Described screens list
Member includes two centre struts being connected in the middle part of base upper surface, chuck and is screwed together on each centre strut
Locking nut, the bottom of chuck is provided with notch steel wire rope neck directed downwardly, and two centre struts are along along base
Axisymmetrical, chuck is connected in two center stand columns and locked by the locking nut above it.
2. container bare weight case automatic detection alarm device according to claim 1, it is characterised in that：Described base
Be provided with two blind holes on front/rear end, formed two groups it is coaxial and along the symmetrical blind hole structure of base center axis line, described electricity
Hinder the two sheet resistance foil gauges point that foil gauge is selected in two semi-bridge type resistance strain gages, two semi-bridge type resistance strain gages
It is not installed in two coaxial blind holes, and two semi-bridge type resistance strain gages connection composition work electricity in two groups of coaxial blind holes
Bridge.
3. container bare weight case automatic detection alarm device according to claim 1, it is characterised in that：Described H-shaped is led
Spacing column is respectively connected with to two tops of seat, described limiting plate is connected between two spacing columns, described each limit
Being screwed together positioned at the top of limiting plate on the column of position and has lock nut, and described lock nut is locked limiting plate
Positioning.
4. container bare weight case automatic detection alarm device according to claim 1, it is characterised in that：It is described it is each in
Being screwed together positioned at the top of locking nut on heart column has stop nut.
5. container bare weight case automatic detection alarm device according to claim 1, it is characterised in that：Described locking clamp
One end of head is provided with dop guide hole, and the other end of chuck is provided with center stand column neck, and a center stand column passes through lock
The dop guide hole of tight dop, the center stand column neck of chuck is stuck in another center stand column and locked by locking nut
Fasten.
6. container bare weight case automatic detection alarm device according to claim 3, it is characterised in that：Described limiting plate
One end be provided with limiting plate guide hole, the other end of limiting plate sets one on limited location column neck, H-shaped guide holder spacing vertical
Post passes through the limiting plate guide hole of limiting plate, and the spacing column neck of limiting plate is stuck on another spacing column and by lock nut
It is locked.
7. container bare weight case automatic detection alarm device according to claim 1, it is characterised in that：On described base
It is connected with fall prevention rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203615.3U CN206556734U (en) | 2017-03-03 | 2017-03-03 | Container bare weight case automatic detection alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720203615.3U CN206556734U (en) | 2017-03-03 | 2017-03-03 | Container bare weight case automatic detection alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556734U true CN206556734U (en) | 2017-10-13 |
Family
ID=60363544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720203615.3U Active CN206556734U (en) | 2017-03-03 | 2017-03-03 | Container bare weight case automatic detection alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206556734U (en) |
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2017
- 2017-03-03 CN CN201720203615.3U patent/CN206556734U/en active Active
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