CN102353438A - Scale calibrating device and scale calibrating method for hopper scale with hopper or hopper bin horizontal detection - Google Patents
Scale calibrating device and scale calibrating method for hopper scale with hopper or hopper bin horizontal detection Download PDFInfo
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- CN102353438A CN102353438A CN2011101569196A CN201110156919A CN102353438A CN 102353438 A CN102353438 A CN 102353438A CN 2011101569196 A CN2011101569196 A CN 2011101569196A CN 201110156919 A CN201110156919 A CN 201110156919A CN 102353438 A CN102353438 A CN 102353438A
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- 238000005303 weighing Methods 0.000 claims abstract description 65
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- 229910000831 Steel Inorganic materials 0.000 claims description 6
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- 210000004027 cell Anatomy 0.000 description 63
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- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Abstract
The invention relates to a scale calibrating device and a scale calibrating method for a hopper scale with hopper or hopper bin horizontal detection. The device mainly comprises a jack, a portal frame, a magnetic level instrument, a magnetic level instrument connection hose, a pressure applying platform, a standard weighing sensor and a weighing display instrument, wherein the lower end of the central position of a horizontal transverse beam of the portal frame is provided with the jack; the jack is vertically arranged on the upper surface of the standard weighing sensor for scale calibrating; the pressure applying platform is arranged below the standard weighing sensor for scale calibrating; and the magnetic level instrument mainly comprises a magnetic base and a plastic pipe with graduations. The jack is used for converting a standard weight needed by electronic scale calibration into mechanical force instead of a weight, the magnitude of applied force is controllable, and the loading is at a uniform speed and is reliable; the magnitude of the applied force is accurately displayed through the standard weighing sensor and the weighing display instrument, so that the accurate metering of mechanical force is realized; and the scale calibrating device has a simple structure and a low price, is suitable for narrow fields, can be used repeatedly, is flexible and convenient for applying, and is convenient to install and use on site.
Description
Technical field
The present invention relates to a kind of metering correction and caliberating device, be specifically related to a kind of hopper and claim that the school claims device and adopt the school of this device to claim method with hopper/feed bin horizontal detection.
Background technology
Hopper/feed bin is claimed both to can be used as material level and is detected (converting the weight of material of institute's weighing in the feed bin of certain volume to height of materials is material level), detects like bin-level in the sintering engineering; Can be used as batch weigher again; Like blast furnace ironmaking; The weighing proportioning of coke, ore etc. is and an important process procedure in the convertor steelmaking process, and whether its weighing precisely is directly connected to the quality of energy-saving and cost-reducing and products thereof quality, so hopper is claimed in commercial production, to have a wide range of applications.Hopper is claimed to be made up of weigh hopper/feed bin and electronic scale (comprising LOAD CELLS and annex thereof, weighting display instrument) etc. usually, guarantee to weigh, prepare burden precisely, just must demarcate calibration to electronic scale, makes it reach the precision of designing requirement.And for the demarcation of electronic scale, classic method is to adopt the counterweight that loads standard weights to carry out.But this method need repeatedly be carried counterweight, and labour intensity is big, and efficiency is low.In loading the counterweight process; The display precision of electronic scale is also directly related with the putting position of counterweight; If it is bigger that counterweight is put inhomogeneous unbalance loading; To cause demarcating failure, even because of inclination causes the uneven LOAD CELLS that damages of load distribution, if the while counterweight is piled up and badly also possibly caused collapsing hurting sb.'s feelings.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of hopper with hopper/feed bin horizontal detection to claim that the school claims that device and school claim method to above-mentioned technological deficiency; It is simple in structure, with low cost, and safe and reliable and easy and simple to handle applicability is forced to such an extent that raising is greatly imitated in work.
The present invention solves the problems of the technologies described above the technical scheme of being taked to be:
The hopper of band hopper/feed bin horizontal detection claims that the school claims device; Comprise that mainly lifting jack, portal frame, magnetic levels appearance, magnetic levels appearance connect flexible pipe, the platform of exerting pressure, standard LOAD CELLS, weighting display instrument; Wherein, Portal frame is fixedly connected with brace summer or ground through welding or bolt, and the lower end, horizontal gird center of portal frame is provided with lifting jack, and lifting jack vertically is vertically set on the school and claims on the upper surface with the standard LOAD CELLS; The school claims to use the below of standard LOAD CELLS to be the platform of exerting pressure, and certain thickness cushion block is set between portal frame and the lifting jack; The magnetic levels appearance mainly comprises magnetic bases and vertically is arranged on the plastic tube of the band scale of the open upper end on this base, connects the level meter group that flexible pipe connects and composes the sealing serial connection through the magnetic levels appearance between each level meter; The platform of exerting pressure is separately positioned on each outside, side of hopper/feed bin, and each trailing arm along continuous straight runs extends to the outside of each side; Weighting display instrument and each standard LOAD CELLS phase configuration and outer being located at make things convenient for the observations place; Said school claims that the tricks of device claims to design the corresponding by school LOAD CELLS number of use with on-the-spot hopper; Said is the press-down type load sensor by the school LOAD CELLS.
The magnetic levels appearance connects flexible pipe and through the hose adapter that each magnetic levels appearance magnetic bases horizontal ends left and right sides is provided with respectively four magnetic levels appearance is constituted the level meter group that sealing is connected in series; Each level meter is distributed in four jiaos of horizontal plane of hopper/feed bin, real-time follow-up, detects the stress balance situation of weighting platform.
Said weighting display instrument mainly comprises 4～8 sensor input channels, central controller, has guidance panel and a display screen of each function button; Each sensor input channel and a standard LOAD CELLS phase configuration; Through the function button on the guidance panel central controller is carried out parameter setting, and show the gravimetric value of each sensor input and the general assembly (TW) of all sensors input in the display screen cocycle through operation different functions button.
The thick cushion block of 20～60cm is set, to regulate the distance between the lifting jack of placing in portal frame and below between portal frame and the lifting jack.
Said weighting display instrument is 4 sensor input channels and 4 standard LOAD CELLS phase configuration only, through the gravimetric value of each sensor input of operation different functions button demonstration capable of circulation and the general assembly (TW) of 4 sensor inputs.
When the upper surface that is used to support the trailing arm of hopper/feed bin by LOAD CELLS top, school when each side of hopper/feed bin is the plane, the said upper surface of platform of exerting pressure for each trailing arm; At this moment, using this invention that hopper is claimed to carry out timing signal, the school claims that device passes through each trailing arm and its below is up and down vertical opposite by the LOAD CELLS of verification.Using this device to carry out timing signal, by the said school of quadruplet claim that device is uniformly distributed with in the outside of four sides of hopper of weighing and with by the corresponding distribution up and down of the strong point of school LOAD CELLS; If claiming to design by three, on-the-spot hopper arranged the weighing system of forming in the outside, three sides therein by the school LOAD CELLS; Select for use three cover schools to claim the outside, said three sides that device is arranged in hopper/feed bin so, and upward got final product by corresponding distribution about the strong point of school LOAD CELLS with each outside; Be provided with identical during overlap with aforesaid way more.
When the upper surface that is used to support the trailing arm of hopper/feed bin by LOAD CELLS top, school when each side of hopper/feed bin is on-plane surface; Being made into the upper surface by channel-section steel or steel plate is that each side that a plurality of little trailing arm on plane directly is welded on hopper/feed bin forms the said platform of exerting pressure; A plurality of little trailing arms need to be uniformly distributed with in each outside, side symmetry of the hopper/feed bin of weighing; And each little trailing arm will be in same level height, and the horizontal support face of each little trailing arm is wanted level; At this moment, using this device that hopper is claimed to carry out timing signal, the school claims that the little trailing arm of device and each is vertical up and down corresponding.Using this device to carry out timing signal, the said school of quadruplet claims on each little trailing arm that device is distributed on the platform of exerting pressure that four sides of hopper outside welding of weighing forms, and with the vertical up and down corresponding distribution of each little trailing arm; Arranged the weighing system of forming in the outside, three sides if on-the-spot hopper is claimed to design by three therein by the school LOAD CELLS, select for use so three cover schools claim that device is placed in the outside, said three sides of hopper/feed bin and with the vertical up and down corresponding distribution of the platform of exerting pressure of welding formation; Be provided with identical during overlap with aforesaid way more.
The range ability of weighing of single standard LOAD CELLS is selected from 0-1t, 0-5t, 0-10t, four scopes of 0-15t.
The principle of work of this device is:
Utilize the principle and the fluid level principle of acting force and reacting force; Upwards portal frame is produced acting force with lifting jack; Form downward reacting force by portal frame; This power is loaded into the standard LOAD CELLS and simultaneously by on the LOAD CELLS of school; And claim through the standard electronic that standard LOAD CELLS and weighting display instrument are formed; Accurately show the size of power that each lifting jack applies and the summation of power that whole lifting jack applies, central controller is carried out parameter setting, and show the result of a certain sensor input channel and result's sum total of all the sensors input channel on request through the display screen of operation different functions button weighting display instrument through the function button on the guidance panel; Civil time, select wherein 4 sensor input channels and 4 standard LOAD CELLS configurations one by one each other.This school claims that device demarcates required standard weights with electronic scale and be transformed into the standard mechanical power easily that applies thus, accurately metering and replace counterweight to realize the demarcation that hopper is claimed as normal loading.Observe the horizontal situation of the hopper of weighing through hopper/four jiaos of four level meters that are uniformly distributed with of feed bin horizontal plane in addition, to avoid the generation of weighting platform unbalance loading situation.
Adopt above-mentioned school to claim that the school of device claims that method is:
(1) after hopper is claimed whole installations; Before electronic scale demarcated; The magnetic levels appearance group of at first four magnetic levels appearance being formed is placed on the hopper of weighing/feed bin horizontal plane; And be uniformly distributed with for four jiaos at hopper/feed bin horizontal plane, in the level meter group, inject an amount of water with the plastic tube of funnel through the band scale of open upper end.Whether the installation that the real-time scale registration through water in each level meter detects the hopper/feed bin of weighing level, if out-of-level, then carries out necessary adjustment till being up to the standard.Then each magnetic levels appearance is all taken off from the hopper/feed bin of weighing; Electronic scale is carried out Zero calibration; Reappose each magnetic levels appearance on the hopper/feed bin of weighing after accomplishing Zero calibration, at this moment magnetic levels appearance group is placed on the hopper of weighing/feed bin horizontal plane, perhaps is uniformly distributed with to stick on the hopper of the weighing/same level height in feed bin side place again; Be advisable in loading procedure, to be convenient to real-time monitored, prepare to load demarcation then.
(2) high-ranking officers' lifting jack of claiming device through the vertical corresponding bottom of platform of exerting pressure placed by the school LOAD CELLS or the platform of exerting pressure that vertical corresponding bottom welding forms places; Revolve and rise lifting jack and make push rod upwards claim that to the school portal frame of device applies certain pretightning force; To guarantee that in the pretension process lifting jack is vertically stressed, avoid lifting jack to produce deflection.Up revolve by required loading force size then and rise lifting jack portal frame is loaded downwards; In the range ability of being weighed by the school electronic scale, evenly load by 25%, 50%, 75%, 100% of full scale; Observe the horizontal situation of the hopper/feed bin of weighing simultaneously through the level meter group; Avoid the generation of unbalance loading situation; Guarantee the power that is loaded all vertically affact the platform bottom of exerting pressure by on the LOAD CELLS of school or the platform of exerting pressure that forms through bottom welding all vertically affact downwards by on the LOAD CELLS of school; Until adding load reach by the school electronic scale range upper limit, add load and contain the school and claim general assembly (TW) with the standard LOAD CELLS, then electronic scale is carried out full scale and demarcates.
(3) after completion electronic scale full scale is demarcated, slowly unload and observe by school electronic scale weight displayed value and claim the corresponding situation that the device standard is weighed displayed value with the school.Until being discharged to zero load, confirm to be shown whether be zero, if the non-vanishing Zero calibration that then carries out again by the school electronic scale.
(4) repeat the above-mentioned 2-3 step, till weighed by the school electronic scale displayed value 25%, 50%, 75%, 100% linearity and precision in range ability satisfy product precision or design accuracy and require.
(5) respectively at 50% the range and carry out two groups of tests near 100% the range of weighing of weighing, every group is repeated 3 times at least.Before each test, should transfer to null position with claiming, if the hopper weighing-appliance have automatic balancing or zero point tracking means, should move during test.For same load, repeatedly weighing gained result's is poor, should be not more than the absolute value of these hopper weighing limits of error, can accomplish the demarcation of electronic scale.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention has from start to finish avoided the generation of weighting platform unbalance loading in calibration process, has improved the qualification rate that electronic scale is once demarcated.
2, this school claims that device adopts method of substitution that electronic scale is demarcated required standard weights and is transformed into the standard mechanical power easily that applies: through each input results and the result's sum total that each sensor is corresponding on standard LOAD CELLS and the weighting display instrument; The size that accurately shows the loading force that lifting jack applied; Realized the accurate metering of mechanical force; Replace counterweight to realize the demarcation that hopper is claimed as normal loading; Greatly reduce people's labour intensity, not only safe and reliable but also simple to operately make work efficiency improve greatly.
3, load at the uniform velocity, reliably through the lifting jack application of force, and afterburning controlled amount.
4, the portal frame and the platform of exerting pressure are gathered materials on the spot at the scene, make on the spot, are installed, and can use repeatedly.
5, magnetic levels appearance, lifting jack and school are claimed to use to the combination of on-the-spot back with standard LOAD CELLS and the equal monomer keeping of weighting display instrument transportation, have avoided large-scale lifting.
6, the standard LOAD CELLS is claimed to use in the school, and the range ability of weighing of each can be selected by several scopes such as 0-1t, 0-5t, 0-10t, and corresponding weighting display instrument only need one can be general.After carrying out periodic verification, can repeatedly use repeatedly, convenient, flexible, practice thrift cost.
7, can adapt to the narrow and small restriction in on-the-spot place, easy to use.
8, the magnetic levels appearance can be used as hopper when claiming to install the hopper horizontal detection use.
9, the present invention is applicable to debugging and the maintenance demarcation that all metal construction hoppers are claimed.
Description of drawings
Fig. 1 is the device use figure of one embodiment of the invention;
Fig. 2 is a magnetic levels appearance structural drawing of the present invention;
Fig. 3 is the distribution vertical view of platform of respectively exerting pressure among Fig. 1;
Among the figure: claim to exert pressure platform, 8-by plastic tube, 12-magnetic bases, the 13-hose adapter of school LOAD CELLS, 9-brace summer or ground, 10-hopper/feed bin, 11-band scale with standard LOAD CELLS, 7-in 1-magnetic levels appearance, 2-portal frame, 3-magnetic levels appearance connection flexible pipe, 4-cushion block, 5-lifting jack, 6-school.
Embodiment
For understanding the present invention better, the present invention is done further description below in conjunction with accompanying drawing and embodiment.
Referring to Fig. 1, Fig. 2, Fig. 3; The hopper of band hopper/feed bin horizontal detection of implementing according to present embodiment claims that the school claims device, comprises that mainly magnetic levels appearance 1, portal frame 2, magnetic levels appearance connect flexible pipe 3, cushion block 4, lifting jack 5, school and claim to reach a weighting display instrument that matches by four standard LOAD CELLSs 6 with standard LOAD CELLS 6, the platform 7 of exerting pressure; Wherein, Portal frame 2 is fixedly connected with brace summer or ground 9; Lifting jack 5 is placed in the below, horizontal gird center of portal frame 2, places the thick cushion block of 20～60cm 4 between portal frame 2 and the lifting jack 5, to regulate the distance between the lifting jack of placing in portal frame 2 and cushion block 4 belows 5; Vertically vertically be placed on the school claims on the upper surface with standard LOAD CELLS 6 that the school claims to use the below of standard LOAD CELLS 6 to be the platform 7 of exerting pressure to lifting jack 5; As shown in Figure 2, magnetic levels appearance 1 mainly comprises magnetic bases 12 and the plastic tube 11 of the vertical band scale that is placed on the open upper end on this base and the hose adapter 13 that the magnetic bases 12 horizontal ends left and right sides are provided with respectively; As shown in Figure 3, connect four jiaos of horizontal plane that flexible pipe 3 connects and be distributed in hopper/feed bin 10 through the magnetic levels appearance between each level meter 1.Magnetic levels appearance connection flexible pipe 3 constitutes the level meter group that sealing is connected in series through hose adapter 13 with four magnetic levels appearance 1, the stress balance situation of real-time follow-up, detection weighting platform.
Weighting display instrument is placed on outside above-mentioned each parts, observes display result when being convenient to debug; Said weighting display instrument mainly comprises 4～8 sensor input channels, central controller, has guidance panel and a display screen of each function button; Each sensor input channel and a standard LOAD CELLS phase configuration; Through the function button on the guidance panel central controller is carried out parameter setting, and through the gravimetric value of each sensor input of operation different functions button demonstration capable of circulation and the general assembly (TW) of all sensors input thereof.Civil time, select wherein 4 sensor input channels and 4 standard LOAD CELLS phase configuration.
Single school is claimed to be selected from 0-1t, 0-5t, 0-10t, four scopes of 0-15t with the range ability of weighing of standard LOAD CELLS 6.
By school LOAD CELLS 8 is the press-down type load sensor.
It is corresponding that the tricks that device is claimed in said school and on-the-spot hopper claim to design the number by school LOAD CELLS 8 of use, can be many covers; Hopper/feed bin 10 designs usually by four LOAD CELLSs and is uniformly distributed with unsettled support in the outside, 10 4 sides of hopper/feed bin owing to weigh; So the present embodiment lieutenant colonel claims that device also is made into quadruplet and is uniformly distributed with in the outside, four sides of the hopper/feed bin 10 of weighing, device is claimed in the quadruplet school and the platform 7 of exerting pressure distributes on hopper/feed bin 10 as follows:
Weigh the upper surface of the trailing arm that used by school LOAD CELLS 8 top braces hopper/feed bins 10 on hopper/feed bin 10 during as the plane; The upper surface of this original trailing arm of general using as 5 pairs of lifting jack by the platform 7 of exerting pressure of school LOAD CELLS 8; As shown in Figure 3; Four sides that four trailing arms are separately positioned on hopper/feed bin 10 are as exerting pressure platform 7, and each trailing arm along continuous straight runs extends to the outside of each side; Claim that with the quadruplet school device directly is placed on each trailing arm respectively; At this moment each trailing arm upper surface is the supporting surface of standard LOAD CELLS 6; It simultaneously also is the strong point of hopper/feed bin 10 of weighing; It is through supporting with following corresponding realized by school LOAD CELLS 8 " unsettled " of symmetrical heavy burder bucket/feed bin 10 of installing, and each school claims that device and corresponding LOAD CELLS 8 by verification are up and down vertical opposite like this, and the direct transmission of being convenient to power has reduced the exert pressure workload of platform 7 of special making again.If claiming to design by three, on-the-spot hopper arranged the weighing system of forming in the outside, wherein three sides of hopper/feed bin 10 by school LOAD CELLS 8; Select for use three cover schools to claim that device arranges in the outside, said three sides of hopper/feed bin 10 so, and with hopper/feed bin 10 on this outside, three sides go up each claim by the strong point of school LOAD CELLS 8 up and down corresponding distribution get final product; Be provided with identical during overlap with aforesaid way more.
When the upper surface of original trailing arm on the hopper/feed bin 10 of weighing can not directly be placed the school when claiming device because of being provided with various on-plane surface factors such as reinforcement, diagonal rib; Need to make separately, install the platform 7 of exerting pressure; At this moment can select that [above channel-section steel of 10# (look hopper weighing tonnage size and decide) or steel plate are made the little trailing arm that a plurality of upper surfaces are the plane for use; Each side that then directly will these a plurality of little trailing arms be welded on the hopper/feed bin 10 of weighing forms the platform 7 of exerting pressure; At this moment, the platform 7 of exerting pressure that this welding forms is the supporting surface of standard LOAD CELLS 6, also is 5 pairs of platforms of being exerted pressure by school LOAD CELLS 8 of lifting jack simultaneously.When platform 7 is exerted pressure in welding; Symmetry is uniformly distributed with in the outside, four sides of the hopper/feed bin 10 of weighing to make each the little trailing arm that forms the platform 7 of exerting pressure; And each little trailing arm will be in same level height, and the horizontal support face of each little trailing arm is wanted level, and it is firm, reliable that welding is wanted.At this moment; Because each little trailing arm of the platform 7 of exerting pressure that each is formed by the trailing arm of school LOAD CELLS 8 top braces hopper/feed bins 10 usefulness and welding is not at same horizontal level; Thereby each school claims that device should be vertical up and down corresponding with each little trailing arm of the platform 7 of exerting pressure of independent making, installation, and can not be with up and down vertical opposite by school LOAD CELLS 8.Arranged the weighing system of forming in the outside, three sides if on-the-spot hopper is claimed to design by three therein by school LOAD CELLS 8, select for use so three cover schools claim that device is placed in the outside, said three sides of hopper/feed bin 10 and with the vertical up and down corresponding distribution of the platform 7 of exerting pressure of welding formation; Be provided with identical during overlap with aforesaid way more.
School of the present invention claims that the principle of work of device device is: using this invention that hopper is claimed to carry out timing signal; It is corresponding that concrete tricks and on-the-spot hopper claim to design the number by school LOAD CELLS 8 of use; Generally select for use three or the said school of quadruplet claim device; Utilize the principle and the fluid level principle of acting force and reacting force; Produce upwards acting force with 5 pairs of portal frames of lifting jack 2, this power reacts to standard LOAD CELLS 6 downwards and simultaneously by on the school LOAD CELLS 8, and sums up with results through each standard LOAD CELLS 6 each corresponding input results on standard LOAD CELLS 6 and the weighting display instrument; The size that accurately shows power that lifting jack applies replaces counterweight to realize the demarcation that hopper is claimed as normal loading.Observe the horizontal situation of the hopper/feed bin 10 of weighing in addition through four jiaos of level meters that are uniformly distributed with of hopper/feed bin 10 horizontal planes 1, to avoid the generation of weighting platform unbalance loading situation.
Above-mentioned school claims that the school of device claims that method is:
(1) after hopper is claimed whole installations; Before electronic scale demarcated; The magnetic levels appearance group of at first four magnetic levels appearance 1 being formed is placed on hopper/feed bin 10 horizontal planes of weighing; And be uniformly distributed with for four jiaos at hopper/feed bin 10 horizontal planes, in the level meter group, inject an amount of water with the plastic tube 11 of funnel through the band scale of open upper end.Whether the installation that the real-time scale registration through water in each level meter 1 detects the hopper/feed bin 10 of weighing level, if out-of-level, then carries out necessary adjustment till being up to the standard.Then each magnetic levels appearance 1 is all taken off from the hopper/feed bin 10 of weighing; Electronic scale is carried out Zero calibration; Reappose each magnetic levels appearance 1 on the hopper/feed bin 10 of weighing after accomplishing Zero calibration, at this moment magnetic levels appearance group is placed on hopper/feed bin 10 horizontal planes of weighing, and perhaps is uniformly distributed with to stick on the same level height place, hopper/feed bin 10 sides of weighing again; Be advisable in loading procedure, to be convenient to real-time monitored, prepare to load demarcation then.
(2) high-ranking officers' lifting jack 5 of claiming device through the platform 7 vertical corresponding bottoms of exerting pressure placed by school LOAD CELLS 8 or the platform 7 of exerting pressure that vertical corresponding bottom welding forms places; Revolve and rise lifting jack 5 and make push rod upwards claim that to the school portal frame 2 of device applies certain pretightning force; To guarantee that in the pretension process lifting jack 5 is vertically stressed, avoid lifting jack 5 to produce deflection.Up revolve by required loading force size then and rise lifting jack 5 portal frame 2 is loaded downwards; In the range ability of being weighed by the school electronic scale, evenly load by 25%, 50%, 75%, 100% of full scale; Observe the horizontal situation of the hopper/feed bin 10 of weighing simultaneously through the level meter group; Avoid the generation of unbalance loading situation; Guarantee the power that is loaded all vertically affact platform 7 bottoms of exerting pressure by on the school LOAD CELLS 8 or the platform 7 of exerting pressure that forms through bottom welding all affact downward vertically by on the school LOAD CELLS 8; Until adding load reach by the school electronic scale range upper limit, add load and contain the school and claim general assembly (TW) with standard LOAD CELLS 6, then electronic scale is carried out full scale and demarcates.
(3) after completion electronic scale full scale is demarcated, slowly unload and observe by school electronic scale weight displayed value and claim the corresponding situation that the device standard is weighed displayed value with the school.Until being discharged to zero load, confirm to be shown whether be zero, if the non-vanishing Zero calibration that then carries out again by the school electronic scale.
(4) repeat the above-mentioned 2-3 step, till weighed by the school electronic scale displayed value 25%, 50%, 75%, 100% linearity and precision in range ability satisfy product precision or design accuracy and require.
(5) respectively at 50% the range and carry out two groups of tests near 100% the range of weighing of weighing, every group is repeated 3 times at least.Before each test, should transfer to null position with claiming, if the hopper weighing-appliance have automatic balancing or zero point tracking means, should move during test.For same load, repeatedly weighing gained result's is poor, should be not more than the absolute value of these hopper weighing limits of error, can accomplish the demarcation of electronic scale.
Above disclosedly be merely preferred embodiment of the present invention, change, still belong to protection scope of the present invention according to the equivalence that the present invention did.
Claims (10)
1. the hopper of band hopper/feed bin horizontal detection claims that the school claims device; It is characterized in that mainly comprising that lifting jack, portal frame, magnetic levels appearance, magnetic levels appearance connect flexible pipe, the platform of exerting pressure, standard LOAD CELLS, weighting display instrument; Wherein, Portal frame is fixedly connected with brace summer or ground through welding or bolt, and the lower end, horizontal gird center of portal frame is provided with lifting jack, and lifting jack vertically is vertically set on the school and claims on the upper surface with the standard LOAD CELLS; The school claims to use the below of standard LOAD CELLS to be the platform of exerting pressure, and the thick cushion block of 20～60cm is set between portal frame and the lifting jack; The magnetic levels appearance mainly comprises magnetic bases and vertically is arranged on the plastic tube of the band scale of the open upper end on this base, connects the level meter group that flexible pipe connects and composes the sealing serial connection through the magnetic levels appearance between each level meter; The platform of exerting pressure is separately positioned on each outside, side of hopper/feed bin, and each trailing arm along continuous straight runs extends to the outside of each side; Weighting display instrument and each standard LOAD CELLS phase configuration and outer being located at make things convenient for the observations place; Said school claims that the tricks of device claims to design the corresponding by school LOAD CELLS number of use with on-the-spot hopper; Said is the press-down type load sensor by the school LOAD CELLS.
2. device is claimed in school according to claim 1, it is characterized in that said weighting display instrument mainly comprises 4～8 sensor input channels, central controller, has guidance panel and a display screen of each function button; Each sensor input channel and a standard LOAD CELLS phase configuration; Through the function button on the guidance panel central controller is carried out parameter setting, and can show the gravimetric value of each sensor input and the general assembly (TW) of all sensors input in the display screen cocycle through operation different functions button.
3. device is claimed in school according to claim 2; It is characterized in that said weighting display instrument only 4 sensor input channels and 4 standard LOAD CELLS phase configuration, through the gravimetric value of each sensor input of operation different functions button demonstration capable of circulation and the general assembly (TW) of 4 sensor inputs.
4. device is claimed in school according to claim 3; It is characterized in that the magnetic levels appearance connects hose adapter that flexible pipe is provided with respectively through each magnetic levels appearance magnetic bases horizontal ends left and right sides four magnetic levels appearance are constituted the level meter group of sealing serial connection, each level meter is distributed in four jiaos of horizontal plane of hopper/feed bin.
5. claim device according to the described school of one of claim 1-4, it is characterized in that when upper surface that each side of hopper/feed bin is used to support the trailing arm of hopper/feed bin by LOAD CELLS top, school is the plane the said upper surface of platform of exerting pressure for each trailing arm; At this moment, using this invention that hopper is claimed to carry out timing signal, the school claims that device passes through each trailing arm and its below is up and down vertical opposite by the LOAD CELLS of verification.
6. claim device based on the described school of claim 5, it is characterized in that by the said school of quadruplet claim that device is uniformly distributed with in the outside of four sides of hopper of weighing and with by the corresponding distribution up and down of the strong point of school LOAD CELLS; If claiming to design by three, on-the-spot hopper arranged the weighing system of forming in the outside, three sides therein by the school LOAD CELLS; Select for use three cover schools to claim the outside, said three sides that device is arranged in hopper/feed bin so, and upward claim to be got final product by corresponding distribution about the strong point of school LOAD CELLS with each outside; Be provided with identical during overlap with aforesaid way more.
7. claim device according to the described school of one of claim 1-4; It is characterized in that when upper surface that each side of hopper/feed bin is used to support the trailing arm of hopper/feed bin by LOAD CELLS top, school is on-plane surface; Being made into the upper surface by channel-section steel or steel plate is that each side that a plurality of little trailing arm on plane directly is welded on hopper/feed bin forms the said platform of exerting pressure; A plurality of little trailing arms need to be uniformly distributed with in each outside, side symmetry of the hopper/feed bin of weighing; And each little trailing arm will be in same level height, and the horizontal support face of each little trailing arm is wanted level; At this moment, using this device that hopper is claimed to carry out timing signal, the school claims that the little trailing arm of device and each is vertical up and down corresponding.
8. claim device based on the described school of claim 7, on each the little trailing arm that it is characterized in that claiming that device is distributed on the platform of exerting pressure that the outside, four sides of the hopper welding of weighing forms in the said school of quadruplet, and with the vertical up and down corresponding distribution of each little trailing arm; Arranged the weighing system of forming in the outside, three sides if on-the-spot hopper is claimed to design by three therein by the school LOAD CELLS, select for use so three cover schools claim that device is placed in the outside, said three sides of hopper/feed bin and with the vertical up and down corresponding distribution of the platform of exerting pressure of welding formation; Be provided with identical during overlap with aforesaid way more.
9. claim device according to one of claim 1-4 or 6 or 8 described schools, it is characterized in that the range ability of weighing of single standard LOAD CELLS is selected from 0-1t, 0-5t, 0-10t, four scopes of 0-15t.
10. the said school of one of claim 1-9 claims that the school of device claims method, it is characterized in that comprising the steps:
(1) after hopper is claimed whole installations; Before electronic scale demarcated; The magnetic levels appearance group of at first four magnetic levels appearance being formed is placed on the hopper of weighing/feed bin horizontal plane; And be uniformly distributed with for four jiaos at hopper/feed bin horizontal plane, in the level meter group, injects an amount of water with the plastic tube of funnel through the band scale of open upper end, through the weigh installation level whether of hopper/feed bin of the real-time scale registration detection of water in each level meter; If out-of-level, then carry out necessary adjustment till being up to the standard; Then each magnetic levels appearance is all taken off from the hopper/feed bin of weighing; Electronic scale is carried out Zero calibration; Reappose each magnetic levels appearance on the hopper/feed bin of weighing after accomplishing Zero calibration, at this moment magnetic levels appearance group is placed on the hopper of weighing/feed bin horizontal plane, perhaps is uniformly distributed with to stick on the hopper of the weighing/same level height in feed bin side place again; Be advisable in loading procedure, to be convenient to real-time monitored, prepare to load demarcation then;
(2) high-ranking officers' lifting jack of claiming device through the vertical corresponding bottom of platform of exerting pressure placed by the school LOAD CELLS or the platform of exerting pressure that vertical corresponding bottom welding forms places; Revolve and rise lifting jack and make push rod upwards claim that to the school portal frame of device applies certain pretightning force; To guarantee that in the pretension process lifting jack is vertically stressed, avoid lifting jack to produce deflection; Up revolve by required loading force size then and rise lifting jack portal frame is loaded downwards; In the range ability of being weighed by the school electronic scale, evenly load by 25%, 50%, 75%, 100% of full scale; Observe the horizontal situation of the hopper/feed bin of weighing simultaneously through the level meter group; Avoid the generation of unbalance loading situation; Guarantee the power that is loaded all vertically affact the platform bottom of exerting pressure by on the LOAD CELLS of school or the platform of exerting pressure that forms through bottom welding all vertically affact downwards by on the LOAD CELLS of school; Until adding load reach by the school electronic scale range upper limit, add load and contain the school and claim general assembly (TW) with the standard LOAD CELLS, then electronic scale is carried out full scale and demarcates;
(3) after completion electronic scale full scale is demarcated, slowly unload and observe by school electronic scale weight displayed value and claim the corresponding situation that the device standard is weighed displayed value with the school; Until being discharged to zero load, confirm to be shown whether be zero, if the non-vanishing Zero calibration that then carries out again by the school electronic scale;
(4) repeat the above-mentioned 2-3 step, till weighed by the school electronic scale displayed value 25%, 50%, 75%, 100% linearity and precision in range ability satisfy product precision or design accuracy and require;
(5) respectively at 50% the range and carry out two groups of tests near 100% the range of weighing of weighing, every group is repeated 3 times at least; Before each test, should transfer to null position with claiming, if the hopper weighing-appliance have automatic balancing or zero point tracking means, should move during test; For same load, repeatedly weighing gained result's is poor, should be not more than the absolute value of these hopper weighing limits of error, can accomplish the demarcation of electronic scale.
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| CN 201110156919 CN102353438B (en) | 2011-06-13 | 2011-06-13 | Scale calibrating device and scale calibrating method for hopper scale with hopper or hopper bin horizontal detection |
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| CN 201110156919 CN102353438B (en) | 2011-06-13 | 2011-06-13 | Scale calibrating device and scale calibrating method for hopper scale with hopper or hopper bin horizontal detection |
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| CN102721413A (en) * | 2012-06-29 | 2012-10-10 | 武汉一冶钢结构有限责任公司 | Simulated positioning method for storage tank deep-well pump installation for total-pressure type liquefied petroleum gas (LPG) transport ship |
| CN103438976A (en) * | 2013-07-18 | 2013-12-11 | 江苏联峰能源装备有限公司 | Novel rapid detection system and method of steel-making loading hopper scales |
| CN104048742A (en) * | 2014-05-31 | 2014-09-17 | 新安中联万基水泥有限公司 | Special measuring platform for cement production |
| CN105277268A (en) * | 2014-06-25 | 2016-01-27 | 中联重科股份有限公司 | Mobile bin scale calibration system and scale calibration method |
| CN106338330A (en) * | 2016-10-31 | 2017-01-18 | 中冶华天南京工程技术有限公司 | Injecting and blowing tank weighing and calibrating system |
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| CN102721413A (en) * | 2012-06-29 | 2012-10-10 | 武汉一冶钢结构有限责任公司 | Simulated positioning method for storage tank deep-well pump installation for total-pressure type liquefied petroleum gas (LPG) transport ship |
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| CN104048742A (en) * | 2014-05-31 | 2014-09-17 | 新安中联万基水泥有限公司 | Special measuring platform for cement production |
| CN105277268B (en) * | 2014-06-25 | 2018-11-09 | 中联重科股份有限公司 | Mobile bin scale calibration system and scale calibration method |
| CN105277268A (en) * | 2014-06-25 | 2016-01-27 | 中联重科股份有限公司 | Mobile bin scale calibration system and scale calibration method |
| CN106338330A (en) * | 2016-10-31 | 2017-01-18 | 中冶华天南京工程技术有限公司 | Injecting and blowing tank weighing and calibrating system |
| CN108398178A (en) * | 2018-01-17 | 2018-08-14 | 山东钢铁集团日照有限公司 | A kind of quick method of calibration of wide range running scale |
| CN107990968A (en) * | 2018-01-23 | 2018-05-04 | 山东钢铁股份有限公司 | A kind of check method of blast furnace lower hopper scale |
| CN107990968B (en) * | 2018-01-23 | 2020-01-17 | 山东钢铁股份有限公司 | Checking method of blast furnace tank blanking hopper scale |
| CN109269608A (en) * | 2018-10-23 | 2019-01-25 | 浙江迦南科技股份有限公司 | A kind of docking structure being applicable in online weighing |
| CN109269608B (en) * | 2018-10-23 | 2023-12-29 | 浙江迦南科技股份有限公司 | Butt joint structure suitable for online weighing |
| CN109668616A (en) * | 2018-11-06 | 2019-04-23 | 杭州钱江称重技术有限公司 | One kind is automatically without weight calibrating device |
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