CN204514442U - Asphalt mixing plant cold burden storehouse flow rate-measuring device - Google Patents
Asphalt mixing plant cold burden storehouse flow rate-measuring device Download PDFInfo
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- CN204514442U CN204514442U CN201520182231.9U CN201520182231U CN204514442U CN 204514442 U CN204514442 U CN 204514442U CN 201520182231 U CN201520182231 U CN 201520182231U CN 204514442 U CN204514442 U CN 204514442U
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Abstract
The utility model discloses a kind of asphalt mixing plant cold burden storehouse flow rate-measuring device, comprise conveying tape holder and to be arranged on bottom conveying tape holder and for the headstock of support belt frame and tailstock, conveying tape holder is obliquely installed, the upper end of the headstock is hinged with the lower end of conveying tape holder, the upper end of tailstock and the upper end support and connection of conveying tape holder, the upper end of conveying tape holder is rotatablely equipped with cylinder, the lower end of conveying tape holder is rotatablely equipped with bottom roll, upper cylinder is connected by conveying belt with bottom roll, conveying tape holder is provided with the drive motor rotated for driving conveying belt, tailstock upper end is provided with the LOAD CELLS for measuring cold burden quality on conveying belt, the bottom of conveying tape holder is connected with the LOAD CELLS caliberating device for demarcating LOAD CELLS.The utility model estimating precision is high, and measurement result can play directive function accurately for follow-up bituminous mixture work, improves asphalt mixture production quality, decreases potential safety hazard, and cost of determination is low.
Description
Technical field
The utility model belongs to cold burden storehouse flow measurement technical field, specifically relates to a kind of asphalt mixing plant cold burden storehouse flow rate-measuring device.
Background technology
In the construction of China Higher level bituminous pavement, the production of asphalt has generally been come by asphalt mixing plant.The production Gradation Control of asphalt starts from cold burden storehouse, if the cold burden in each cold burden storehouse is not in accordance with the ratio material loading of Laboratory Request, each storehouse of subsequent thermal feed bin may be made to occur flash, situation to be expected, the production grating of asphalt reality and target grating is caused to differ greatly, affect the quality of production and the performance of asphalt, thus the serviceable life on remote effect construction road surface.In order to ensure that mixing plant is under different output, the cold burden supply ratio in each cold burden storehouse is consistent with the target proportioning that lab design requires, needs to measure the cold burden flow in cold burden storehouse.
At present, to the adjustment of the cold burden uninterrupted of asphalt mixing plant, by regulating the frequency of the variable-frequency motor of the outfeed belt for driving cold burden storehouse, to regulate the rotating speed of variable-frequency motor to realize.If the rotating speed of variable-frequency motor reduces, then the reduction that the load in cold burden storehouse is proportional; If variable-frequency motor faster rotational speed, then the increase that the load in cold burden storehouse is proportional.Based on this principle, domestic scholars Liu Honghai professor etc. proposes simple and practical cold burden flow measurement mode, this mensuration mode is used widely, concrete mensuration process is: opened by the door in cold burden storehouse, according to 25% discharging (other cold burden storehouse not feed) of variable-frequency motor maximum frequency, on oblique belt the material of cold burden thick even time, cut off the power supply of the variable-frequency motor driving outfeed belt and the drive motor driving oblique belt, the cold burden section of 2m is intercepted at the correct position of oblique belt, the pack of artificial feeding, adopt electronic scale weighing get the quality m of cold burden section
0, unit is kg.By the quality m of alleged cold burden section
0substitute into formula
in, wherein, Q is measured cold burden storehouse cold burden flow, and unit is t/h; W is cold burden water percentage (experimental determination); l
1for the length of got cold burden section, unit is m; V is the rotating speed (providing in operational manual) of oblique belt, and unit is m/s.Press variable-frequency motor maximum frequency afterwards successively 50% and 75% controls variable-frequency motor discharging, and adopts the quality of electronic scale weighing got cold burden section respectively, substitutes into above-mentioned formula and obtains corresponding cold burden storehouse cold burden flow.By above three point Linear matchings, namely obtain the linear relationship between the frequency f of electricity frequency motor and cold burden storehouse cold burden flow Q, i.e. formula Q=kf+b is that follow-up bituminous mixture work is instructed by formula Q=kf+b.Such as: when bituminous mixing plant is normally produced, suppose the requirement according to target proportioning, it is 40t that this cold burden storehouse feed quantity should be per hour, then operating room's controllers is by the formula of above-mentioned matching, the frequency values that this cold burden warehouse discharging amount is the variable-frequency motor corresponding when equaling 40t of Q can be calculated, control the frequency material loading of variable-frequency motor according to this frequency values.
Although the mode of above-mentioned labor measurement cold burden storehouse cold burden flow is simple, but there is following shortcoming: (1) sampling amount is less, the general 2m that gets on oblique belt expects section, due to situations such as stream fluctuation are larger, in uneven thickness, causes measurement result error large, (2) mensuration personnel are needed to stand in the cold burden pack of sampling material section on oblique belt, weigh, there is certain danger, concrete reason is: because there is certain distance at the pulpit of mixing plant and mensuration scene, and tiltedly belt drives motor position is all generally the vision dead band of operation room, pulpit is difficult to observe and measures on-the-spot situation, the contact so keep in communication in the on-the-spot general intercom of mensuration and pulpit, pulpit is opened according to the requirement measuring on-site measurement personnel, close the power supply driving the variable-frequency motor of outfeed belt and the drive motor of oblique belt, larger owing to measuring on-site noise, just in case measure the on-the-spot instruction being communicated to operation room to transmit not in time or pulpit operated by personnel error, start driving the drive motor of oblique belt in artificial feeding mistiming, then jeopardize the safety of mensuration personnel, (3) the artificial feeding of high strength in the short time, considerably increases the labour intensity of mensuration personnel, (4) in the mensuration process of anxiety, the weighing of sampling cold burden section needs to complete fast, and artificial multi-pass operations easily causes carelessness, causes weighing result wrong, finally causes flow measurement result wrong, in addition, manually repeatedly weighing operation, waste time and energy, labour intensity is large.
In order to solve the problem of current cold burden storehouse cold burden flow measurement, scholar is had to propose employing formula
calculate cold burden flow, wherein, Q is measured cold burden storehouse cold burden flow, and unit is t/h; F is the weight of cold burden on oblique belt, and unit is N; G is acceleration of gravity, and value is 9.8m/s
2; L is the horizontal range of oblique belt upper end to oblique belt lower end, and unit is m; L is that on oblique belt, cold burden barycenter is to the horizontal range of oblique belt lower end, and unit is m; L
1for the distance between oblique belt lower end edge belt direction to oblique belt top, unit is m; W is cold burden water percentage (experimental determination); V is the rotating speed (providing in operational manual) of conveying belt, and unit is m/s.In these parameters, g, L, l, L
1, w and v be known quantity, F is unknown quantity.Want to realize the Accurate Determining to cold burden flow, first will design asphalt mixing plant cold burden storehouse flow rate-measuring device.And existing cold burden storehouse flow rate-measuring device cannot realize the measurement to F, therefore, in the urgent need to designing a kind of cold burden storehouse flow rate-measuring device that can be suitable for this kind of flow measurement mode.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of asphalt mixing plant cold burden storehouse flow rate-measuring device is provided, its structure is simple, realization is convenient and use simple operation, artificial feeding on oblique belt is not needed to weigh, save a large amount of manpower, safe and reliable; Without the need to artificial bagging and weighing, weigh accurately, time saving and energy saving; Sampling material segment length, error is little, and accuracy of measurement is high.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: comprise conveying tape holder and to be arranged on bottom conveying tape holder and for the headstock of support belt frame and tailstock, described conveying tape holder is obliquely installed, the upper end of the described headstock is hinged with the lower end of conveying tape holder, the upper end of described tailstock and the upper end support and connection of conveying tape holder, the lower end of described conveying tape holder is positioned at the below in cold burden storehouse to be measured, the bottom discharge mouth in described cold burden storehouse to be measured is provided with outfeed belt and outfeed belt drives rotation by variable-frequency motor, the upper end of described conveying tape holder is rotatablely equipped with cylinder, the lower end of described conveying tape holder is rotatablely equipped with bottom roll, described upper cylinder and bottom roll are connected by conveying belt and form band transmission, described conveying tape holder is provided with the drive motor rotated for driving conveying belt, the top of described conveying tape holder is provided with the carrying roller for support belt, described carrying roller is arranged on conveying tape holder by carrier roller frame, the upper end of described tailstock is provided with the LOAD CELLS for measuring cold burden quality on conveying belt, the bottom of described conveying tape holder is connected with the LOAD CELLS caliberating device for demarcating LOAD CELLS.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: described tailstock comprises tailstock base, the two ends of described tailstock base are all fixed with tailstock fixed head, all be connected by supporting construction between described tailstock base and the front side of conveying tape holder and between tailstock base with the rear side of conveying tape holder, described supporting construction comprises support, bearing plate, link and sensor check weighing governor motion, described bearing plate is fixed on the upper end of support, described link is arranged on the top of bearing plate, described sensor check weighing governor motion is connected between LOAD CELLS and described link, described link is by backing plate, support foot plate and gusset composition, described backing plate is vertically fixed on the inner of support foot plate and forms L shaped plate with support foot plate, described gusset is arranged in L shaped plate, described gusset is all fixedly connected with support foot plate with backing plate, described sensor check weighing governor motion comprises seaming chuck, push-down head and adjustment screw rod, described seaming chuck is arranged on the top of push-down head, the described lower end of adjustment screw rod is fixedly connected with the upper end of seaming chuck, the upper end of described adjustment screw rod is through support foot plate, described adjustment screw rod is arranged with the upper adjusting nut be mated and lower adjusting nut, described upper adjusting nut and lower adjusting nut lay respectively at the both sides up and down of support foot plate, the lower end of described push-down head is connected with connecting link, LOAD CELLS is connected with between described connecting link and bearing plate, described support is fixed on tailstock base.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: described LOAD CELLS caliberating device is positioned at the inner side of described supporting construction, described LOAD CELLS caliberating device comprises pallet and hook base, described pallet is arranged on the below of hook base, described hook base is fixed on the bottom of conveying tape holder, described hook base is connected by many suspension linkage members with between pallet, described suspension linkage member forms with chain by linking up with, the upper end of described chain is suspended on hook, the lower end of described chain is fixedly connected with pallet, described hook is fixed on hook base.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: between described support foot plate and bearing plate, be connected with spiral lifting mechanism, described spiral lifting mechanism comprises lifting screw, the lower end of described lifting screw is through bearing plate, the upper end of described lifting screw is through support foot plate, the lower end of described lifting screw is arranged with the upper setscrew nut and lower setscrew nut that are mated, described upper setscrew nut and lower setscrew nut lay respectively at the both sides up and down of bearing plate, the upper end of described lifting screw is arranged with the upper lifting nut and lower lifting nut that are mated, described upper lifting nut and lower lifting nut lay respectively at the both sides up and down of support foot plate.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: the described headstock comprises headstock base, the two ends of described headstock base are all fixed with headstock fixed head, all be connected by articulated elements between described headstock base and the front side of conveying tape holder and between headstock base with the rear side of conveying tape holder, described articulated elements is made up of upper pin seat, downside pin axle bed and bearing pin, described upper pin seat is fixed on the bottom of conveying tape holder, described downside pin axle bed is fixed on headstock base, and described upper pin seat and downside pin axle bed pass through pinned connection.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: the both sides, lower end of described conveying tape holder are provided with conveying belt tension governor motion, described conveying belt tension governor motion comprises tensioning adjusting bracket, bearing plate and tensioning screw, described bearing plate is arranged on the oblique upper of tensioning adjusting bracket, described bearing plate is fixedly connected with conveying tape holder, one end of described tensioning screw to be located on tensioning adjusting bracket and to fix with tensioning adjusting bracket, the other end of described tensioning screw is through bearing plate, described tensioning screw is arranged with the upper locking nut be mated and lower locking nut, described upper locking nut and lower locking nut lay respectively at the both sides up and down at bearing plate, described tensioning adjusting bracket and conveying tape holder all have gathering sill, described gathering sill is equipped with the fastening bolt be fixedly connected with conveying tape holder by tensioning adjusting bracket, the both sides, lower end of described tensioning adjusting bracket are all fixed with Connection Block, and described Connection Block is fixed with step, and described bottom roll supports and is arranged on step.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: the both sides, upper end of described conveying tape holder are all fixed with top chock, described upper cylinder support is arranged on top chock.
Above-mentioned asphalt mixing plant cold burden storehouse flow rate-measuring device, is characterized in that: the both sides, lower end of described conveying tape holder are all fixed with breast board support, described breast board support is provided with cold burden blanking breast board.
The utility model compared with prior art has the following advantages:
1, the structure of the utility model determinator is simple, reasonable in design, and it is convenient to realize, and uses simple operation.
2, in the utility model determinator, LOAD CELLS is set, by LOAD CELLS, the cold burden on conveying belt is weighed, on the one hand, do not need mensuration personnel to stand on the conveyor belt the cold burden of sampling material section to be packed, weighs, greatly save human input, only need reading in pulpit, labour intensity is little, time saving and energy saving, efficiency is high, safe and reliable; On the other hand, sampling amount is large, is cold burdens all on conveying belt, and the situation such as larger, in uneven thickness causes the problem that measurement result error is large because stream fluctuates to efficiently solve existing sampling material section.
3, arrange LOAD CELLS in the utility model determinator, high to the weighing accuracy of cold burden, effectively prevent the phenomenon that existing artificial multi-pass operations easily causes carelessness, causes weighing result wrong, flow measurement accuracy is high.
4, in the utility model determinator, spiral lifting mechanism is set, when routine is produced, spiral lifting mechanism supports the weight of determinator complete machine, during cold burden flow measurement, spiral lifting mechanism does not play a supportive role, the setting of spiral lifting mechanism can not only prevent the long-term stressed damage of LOAD CELLS, and does not affect follow-up stirring work.
5, the utility model mensuration mode is simple, it is convenient to realize, accuracy of measurement is high, according to the cold burden storehouse cold burden flow measured, the linear relationship between the frequency of electricity frequency motor accurately and cold burden storehouse cold burden flow can be obtained, for directive function is accurately played in follow-up bituminous mixture work, improve asphalt mixture production quality, indirectly improve the serviceable life on construction road surface.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is the A place enlarged drawing of Fig. 1.
Fig. 3 is the B place enlarged drawing of Fig. 1.
Fig. 4 is the vertical view after the utility model removes drive motor.
Fig. 5 is the installation relation schematic diagram of the utility model tailstock, conveying tape holder and LOAD CELLS caliberating device.
Fig. 6 is the installation relation schematic diagram of the utility model headstock and conveying tape holder.
Fig. 7 is the installation relation schematic diagram of the utility model sensor check weighing governor motion and support foot plate.
Fig. 8 is the installation relation schematic diagram of the utility model spiral lifting mechanism, bearing plate and support foot plate.
Fig. 9 is using state figure of the present utility model.
Figure 10 is the fundamental diagram of the utility model conveying belt.
Description of reference numerals:
1-cold burden blanking breast board; 2-carrying roller; 3-bottom roll;
4-conveying belt; 5-upper pin seat; 6-top chock;
7-conveying tape holder; 8-pallet; 9-chain;
10-upper cylinder; 11-headstock fixed head; 12-headstock base;
13-bearing pin; 14-downside pin axle bed; 15-Connection Block;
16-gusset; 17-hook base; 18-backing plate;
19-LOAD CELLS; 20-bearing plate; 21-support foot plate;
22-step; 23-hook; 24-support;
25-tailstock base; 26-tailstock fixed head; 27-breast board support;
28-tensioning adjusting bracket; 28-1-gathering sill; 29-carrier roller frame;
30-tensioning screw; 30-1-upper locking nut; 30-2-lower locking nut;
31-bearing plate; 32-lifting screw; 33-1-upper setscrew nut;
33-2-lower setscrew nut; 34-1-upper lifting nut; 34-2-lower lifting nut;
35-1-upper adjusting nut; 35-2-lower adjusting nut; 36-adjustment screw rod;
37-seaming chuck; 38-push-down head; 38-1-connecting link;
39-fastening bolt; 40-outfeed belt; 41-cold burden storehouse;
43-drive motor.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 9, the utility model comprises conveying tape holder 7 and to be arranged on bottom conveying tape holder 7 and for the headstock of support belt frame 7 and tailstock, described conveying tape holder 7 is obliquely installed, the upper end of the described headstock is hinged with the lower end of conveying tape holder 7, the upper end of described tailstock and the upper end support and connection of conveying tape holder 7, the lower end of described conveying tape holder 7 is positioned at the below in cold burden storehouse 41 to be measured, the bottom discharge mouth in described cold burden storehouse 41 to be measured is provided with outfeed belt 40 and outfeed belt 40 drives rotation by variable-frequency motor, the upper end of described conveying tape holder 7 is rotatablely equipped with cylinder 10, the lower end of described conveying tape holder 7 is rotatablely equipped with bottom roll 3, described upper cylinder 10 and bottom roll 3 are connected by conveying belt 4 and form band transmission, described conveying tape holder 7 is provided with the drive motor 43 rotated for driving conveying belt 4, the top of described conveying tape holder 7 is provided with the carrying roller 2 for support belt 4, described carrying roller 2 is arranged on conveying tape holder 7 by carrier roller frame 29, the upper end of described tailstock is provided with the LOAD CELLS 19 for measuring cold burden quality on conveying belt 4, the bottom of described conveying tape holder 7 is connected with the LOAD CELLS caliberating device for demarcating LOAD CELLS 19.In the present embodiment, conveying tape holder 7 is made up of the symmetrically arranged channel-section steel steelframe in front and back and the many crossbeams be connected between two channel-section steels.
As Fig. 1, Fig. 3, shown in Fig. 4 Fig. 5 and Fig. 7, described tailstock comprises tailstock base 25, the two ends of described tailstock base 25 are all fixed with tailstock fixed head 26, all be connected by supporting construction between described tailstock base 25 and the front side of conveying tape holder 7 and between tailstock base 25 with the rear side of conveying tape holder 7, described supporting construction comprises support 24, bearing plate 20, link and sensor check weighing governor motion, described bearing plate 20 is fixed on the upper end of support 24, described link is arranged on the top of bearing plate 20, described sensor check weighing governor motion is connected between LOAD CELLS 19 and described link, described link is by backing plate 18, support foot plate 21 and gusset 16 form, described backing plate 18 is vertically fixed on the inner of support foot plate 21 and forms L shaped plate with support foot plate 21, described gusset 16 is arranged in L shaped plate, described gusset 16 is all fixedly connected with support foot plate 21 with backing plate 18, described sensor check weighing governor motion comprises seaming chuck 37, push-down head 38 and adjustment screw rod 36, described seaming chuck 37 is arranged on the top of push-down head 38, the lower end of described adjustment screw rod 36 is fixedly connected with the upper end of seaming chuck 37, the upper end of described adjustment screw rod 36 is through support foot plate 21, described adjustment screw rod 36 is arranged with the upper adjusting nut 35-1 and lower adjusting nut 35-2 that are mated, described upper adjusting nut 35-1 and lower adjusting nut 35-2 lays respectively at the both sides up and down of support foot plate 21, the lower end of described push-down head 38 is connected with connecting link 38-1, LOAD CELLS 19 is connected with between described connecting link 38-1 and bearing plate 20, described support 24 is fixed on tailstock base 25.In the present embodiment, the quantity of LOAD CELLS 19 is two, and when cold burden measures, during as occurred two LOAD CELLS 19 unbalance stress problems, upward adjusting nut 35-1 and lower adjusting nut 35-2, makes two LOAD CELLS 19 uniform force.During concrete enforcement, support 24 is consisted of two channel-section steels be oppositely arranged, and channel-section steel has multiple bolt hole, is fixed together by two channel-section steels through the bolt through this bolt hole; The lower end of support 24 is welded on tailstock base 25, and bearing plate 20 is welded on the upper end of support 24; Tailstock fixed head 26 is welded on tailstock base 25, and tailstock fixed head 26 has bolt hole, through being fixed on ground by tailstock base 25 through this bolt hole.
As shown in Fig. 1, Fig. 3 and Fig. 5, described LOAD CELLS caliberating device is positioned at the inner side of described supporting construction, described LOAD CELLS caliberating device comprises pallet 8 and hook base 17, described pallet 8 is arranged on the below of hook base 17, described hook base 17 is fixed on the bottom of conveying tape holder 7, described hook base 17 is connected by many suspension linkage members with between pallet 8, described suspension linkage member by link up with 23 and chain 9 form, the upper end of described chain 9 is suspended on hook 23, the lower end of described chain 9 is fixedly connected with pallet 8, and described hook 23 is fixed on hook base 17.In the present embodiment, the quantity of chain 9 is four, and four chains are symmetricly set between conveying tape holder 7 and pallet 8.At LOAD CELLS 19 timing signal, pallet 8 is for placing counterweight; Chain 9 and pallet 8 entirety can be taken off from hook 23 after demarcating by LOAD CELLS 19.
As Fig. 1, Fig. 3, shown in Fig. 5 and Fig. 8, spiral lifting mechanism is connected with between described support foot plate 21 and bearing plate 20, described spiral lifting mechanism comprises lifting screw 32, the lower end of described lifting screw 32 is through bearing plate 20, the upper end of described lifting screw 32 is through support foot plate 21, the lower end of described lifting screw 32 is arranged with the upper setscrew nut 33-1 and lower setscrew nut 33-2 that are mated, described upper setscrew nut 33-1 and lower setscrew nut 33-2 lays respectively at the both sides up and down of bearing plate 20, the upper end of described lifting screw 32 is arranged with the upper lifting nut 34-1 and lower lifting nut 34-2 that are mated, described upper lifting nut 34-1 and lower lifting nut 34-2 lays respectively at the both sides up and down of support foot plate 21.During conventional production, spiral lifting mechanism supports the weight of determinator complete machine, during cold burden flow measurement, turns lower lifting nut 34-2 downwards, makes spiral lifting mechanism no longer bear the weight of determinator complete machine, then tighten lifting nut 34-1; After mensuration, upwards turn lifting nut 34-1 and turn lower lifting nut 34-2, making spiral lifting mechanism not bear the weight of determinator complete machine, the long-term stressed damage of LOAD CELLS 19 can not only be prevented like this, and do not affect follow-up stirring work.
As shown in Figure 1, Figure 2, shown in Fig. 4 and Fig. 6, the described headstock comprises headstock base 12, the two ends of described headstock base 12 are all fixed with headstock fixed head 11, all be connected by articulated elements between described headstock base 12 and the front side of conveying tape holder 7 and between headstock base 12 with the rear side of conveying tape holder 7, described articulated elements is made up of upper pin seat 5, downside pin axle bed 14 and bearing pin 13, described upper pin seat 5 is fixed on the bottom of conveying tape holder 7, described downside pin axle bed 14 is fixed on headstock base 12, and described upper pin seat 5 is connected by bearing pin 13 with downside pin axle bed 14.In the present embodiment, bearing pin 13 is the pin joint of conveying tape holder 7 and the headstock.During concrete enforcement, headstock fixed head 11 is welded on headstock base 12, and headstock fixed head 11 has bolt hole, is fixed on ground by the headstock through the bolt through this bolt hole.
As Fig. 1, shown in Fig. 2 and Fig. 4, the both sides, lower end of described conveying tape holder 7 are provided with conveying belt tension governor motion, described conveying belt tension governor motion comprises tensioning adjusting bracket 28, bearing plate 31 and tensioning screw 30, described bearing plate 31 is arranged on the oblique upper of tensioning adjusting bracket 28, described bearing plate 31 is fixedly connected with conveying tape holder 7, one end of described tensioning screw 30 to be located on tensioning adjusting bracket 28 and to fix with tensioning adjusting bracket 28, the other end of described tensioning screw 30 is through bearing plate 31, described tensioning screw 30 is arranged with the upper locking nut 30-1 be mated and lower locking nut 30-2, described upper locking nut 30-1 and lower locking nut 30-2 lays respectively at the both sides up and down at bearing plate 31, described tensioning adjusting bracket 28 and conveying tape holder 7 all have gathering sill 28-1, described gathering sill 28-1 is equipped with the fastening bolt 39 be fixedly connected with conveying tape holder 7 by tensioning adjusting bracket 28, the both sides, lower end of described tensioning adjusting bracket 28 are all fixed with Connection Block 15, and described Connection Block 15 is fixed with step 22, and described bottom roll 3 supports and is arranged on step 22.Conveying belt 4 uses can loosen through for a long time, needs tensioning to regulate.During concrete adjustment, loosen fastening bolt 39, loosen upper locking nut 30-1 mono-segment length, upwards screwing lower locking nut 30-2 to conveying belt 4 is suitable elasticity, then tightens upper locking nut 30-1 and fastening bolt 39.In the present embodiment, the both sides, upper end of described conveying tape holder 7 are all fixed with top chock 6, and described upper cylinder 10 supports and is arranged on top chock 6.
As shown in Figure 1 and Figure 4, the both sides, lower end of described conveying tape holder 7 are all fixed with breast board support 27, described breast board support 27 are provided with cold burden blanking breast board 1, drop on after on conveying belt 4 and go out from conveying belt 4 both sides landing under preventing cold burden.
In the present embodiment, described LOAD CELLS 19 is cantilever type weighing sensor, and range ability is large, and meet and measure requirement, it is convenient to install, linearly better.
In conjunction with Figure 10, principle of work of the present utility model is: first adjustment conveying tape holder 7, makes to carry the gravity of tape holder 7 to be applied in LOAD CELLS 19; The weight of the weight of the weight of the conveying tape holder 7 then LOAD CELLS 19 weighed, the weight of upper cylinder 10, bottom roll 3, the weight of conveying belt 4, the weight of carrying roller 2, the weight of carrier roller frame 29 and described LOAD CELLS caliberating device and displayed value be set as null value; In pallet 8, put into counterweight again demarcate LOAD CELLS 19.After demarcation completes, regulate the frequency f (other cold burden storehouse not feed) of described variable-frequency motor, to be seen even to the cold burden thickness on conveying belt 4 time, cut off the power supply of described variable-frequency motor and the power supply of drive motor 43, record the reading F of LOAD CELLS 19, F is substituted into formula
in, the frequency calculating described variable-frequency motor is the cold burden storehouse cold burden flow value Q that f is corresponding; Wherein, Q is measured cold burden storehouse cold burden flow, and unit is t/h; F is the weight of cold burden on oblique belt, and namely F is the displayed value of LOAD CELLS 19, and unit is N; G is acceleration of gravity, and value is 9.8m/s
2; L is the horizontal range of oblique belt upper end to oblique belt lower end, and namely L is that LOAD CELLS 19 arrives the described headstock and the horizontal range of carrying tape holder 7 pin joint, and unit is m; L is that on oblique belt, cold burden barycenter is to the horizontal range of oblique belt lower end, and namely l is that on conveying belt 4, cold burden barycenter is to the described headstock and the horizontal range of carrying tape holder 7 pin joint, and unit is m; L
1for the distance between oblique belt lower end edge belt direction to oblique belt top, i.e. L
1for the described headstock and conveying tape holder 7 pin joint along conveying belt 4 direction to upper cylinder 10 axle center between distance, unit is m; W is cold burden water percentage (experimental determination); V is the rotating speed (providing in operational manual) of conveying belt, and unit is m/s.Repeat said process, regulate the frequency f of described variable-frequency motor to be different value, correspondence calculates different cold burden storehouse cold burden flow value Q.
After cold burden flow measurement terminates, by the cold burden storehouse cold burden flow value linear fit under the above-mentioned different frequency calculated, obtain the linear relationship between the frequency f of electricity frequency motor and cold burden storehouse cold burden flow Q, i.e. formula Q=kf+b is that follow-up bituminous mixture work is instructed by formula Q=kf+b.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (8)
1. an asphalt mixing plant cold burden storehouse flow rate-measuring device, it is characterized in that: comprise conveying tape holder (7) and be arranged on conveying tape holder (7) bottom and for the headstock of support belt frame (7) and tailstock, described conveying tape holder (7) is obliquely installed, the upper end of the described headstock is hinged with the lower end of conveying tape holder (7), the upper end of described tailstock and the upper end support and connection of conveying tape holder (7), the lower end of described conveying tape holder (7) is positioned at the below of cold burden storehouse (41) to be measured, the bottom discharge mouth of described cold burden storehouse (41) to be measured is provided with outfeed belt (40) and outfeed belt (40) drives rotation by variable-frequency motor, the upper end of described conveying tape holder (7) is rotatablely equipped with cylinder (10), the lower end of described conveying tape holder (7) is rotatablely equipped with bottom roll (3), described upper cylinder (10) and bottom roll (3) are connected by conveying belt (4) and form band transmission, described conveying tape holder (7) is provided with the drive motor (43) rotated for driving conveying belt (4), the top of described conveying tape holder (7) is provided with the carrying roller (2) for support belt (4), described carrying roller (2) is arranged in conveying tape holder (7) by carrier roller frame (29), the upper end of described tailstock is provided with the LOAD CELLS (19) for measuring the upper cold burden quality of conveying belt (4), the bottom of described conveying tape holder (7) is connected with the LOAD CELLS caliberating device for demarcating LOAD CELLS (19).
2. according to asphalt mixing plant cold burden storehouse according to claim 1 flow rate-measuring device, it is characterized in that: described tailstock comprises tailstock base (25), the two ends of described tailstock base (25) are all fixed with tailstock fixed head (26), all be connected by supporting construction between described tailstock base (25) and the front side of conveying tape holder (7) and between tailstock base (25) with the rear side of conveying tape holder (7), described supporting construction comprises support (24), bearing plate (20), link and sensor check weighing governor motion, described bearing plate (20) is fixed on the upper end of support (24), described link is arranged on the top of bearing plate (20), described sensor check weighing governor motion is connected between LOAD CELLS (19) and described link, described link is by backing plate (18), support foot plate (21) and gusset (16) composition, described backing plate (18) is vertically fixed on the inner of support foot plate (21) and forms L shaped plate with support foot plate (21), described gusset (16) is arranged in L shaped plate, described gusset (16) is all fixedly connected with support foot plate (21) with backing plate (18), described sensor check weighing governor motion comprises seaming chuck (37), push-down head (38) and adjustment screw rod (36), described seaming chuck (37) is arranged on the top of push-down head (38), the lower end of described adjustment screw rod (36) is fixedly connected with the upper end of seaming chuck (37), the upper end of described adjustment screw rod (36) is through support foot plate (21), described adjustment screw rod (36) is arranged with the upper adjusting nut (35-1) be mated and lower adjusting nut (35-2), described upper adjusting nut (35-1) and lower adjusting nut (35-2) lay respectively at the both sides up and down of support foot plate (21), the lower end of described push-down head (38) is connected with connecting link (38-1), LOAD CELLS (19) is connected with between described connecting link (38-1) and bearing plate (20), described support (24) is fixed on tailstock base (25).
3. according to asphalt mixing plant cold burden storehouse according to claim 2 flow rate-measuring device, it is characterized in that: described LOAD CELLS caliberating device is positioned at the inner side of described supporting construction, described LOAD CELLS caliberating device comprises pallet (8) and hook base (17), described pallet (8) is arranged on the below of hook base (17), described hook base (17) is fixed on the bottom of conveying tape holder (7), be connected by many suspension linkage members between described hook base (17) with pallet (8), described suspension linkage member is by linking up with (23) and chain (9) forms, the upper end of described chain (9) is suspended on hook (23), the lower end of described chain (9) is fixedly connected with pallet (8), described hook (23) is fixed on hook base (17).
4. according to asphalt mixing plant cold burden storehouse according to claim 2 flow rate-measuring device, it is characterized in that: between described support foot plate (21) and bearing plate (20), be connected with spiral lifting mechanism, described spiral lifting mechanism comprises lifting screw (32), the lower end of described lifting screw (32) is through bearing plate (20), the upper end of described lifting screw (32) is through support foot plate (21), the lower end of described lifting screw (32) is arranged with the upper setscrew nut (33-1) and lower setscrew nut (33-2) that are mated, described upper setscrew nut (33-1) and lower setscrew nut (33-2) lay respectively at the both sides up and down of bearing plate (20), the upper end of described lifting screw (32) is arranged with the upper lifting nut (34-1) and lower lifting nut (34-2) that are mated, described upper lifting nut (34-1) and lower lifting nut (34-2) lay respectively at the both sides up and down of support foot plate (21).
5. according to asphalt mixing plant cold burden storehouse according to claim 1 flow rate-measuring device, it is characterized in that: the described headstock comprises headstock base (12), the two ends of described headstock base (12) are all fixed with headstock fixed head (11), all be connected by articulated elements between described headstock base (12) and the front side of conveying tape holder (7) and between headstock base (12) with the rear side of conveying tape holder (7), described articulated elements is by upper pin seat (5), downside pin axle bed (14) and bearing pin (13) composition, described upper pin seat (5) is fixed on the bottom of conveying tape holder (7), described downside pin axle bed (14) is fixed on headstock base (12), described upper pin seat (5) is connected by bearing pin (13) with downside pin axle bed (14).
6. according to asphalt mixing plant cold burden storehouse according to claim 1 flow rate-measuring device, it is characterized in that: the both sides, lower end of described conveying tape holder (7) are provided with conveying belt tension governor motion, described conveying belt tension governor motion comprises tensioning adjusting bracket (28), bearing plate (31) and tensioning screw (30), described bearing plate (31) is arranged on the oblique upper of tensioning adjusting bracket (28), described bearing plate (31) is fixedly connected with conveying tape holder (7), one end of described tensioning screw (30) is located in tensioning adjusting bracket (28) and goes up and fix with tensioning adjusting bracket (28), the other end of described tensioning screw (30) is through bearing plate (31), described tensioning screw (30) is arranged with the upper locking nut (30-1) and lower locking nut (30-2) that are mated, described upper locking nut (30-1) and lower locking nut (30-2) lay respectively in the both sides up and down of bearing plate (31), described tensioning adjusting bracket (28) and conveying tape holder (7) all have gathering sill (28-1), described gathering sill (28-1) is equipped with the fastening bolt (39) be fixedly connected with conveying tape holder (7) by tensioning adjusting bracket (28), the both sides, lower end of described tensioning adjusting bracket (28) are all fixed with Connection Block (15), described Connection Block (15) is fixed with step (22), described bottom roll (3) supports and is arranged on step (22).
7. according to asphalt mixing plant cold burden storehouse according to claim 1 flow rate-measuring device, it is characterized in that: the both sides, upper end of described conveying tape holder (7) are all fixed with top chock (6), the support of described upper cylinder (10) is arranged on top chock (6).
8. according to asphalt mixing plant cold burden storehouse according to claim 1 flow rate-measuring device, it is characterized in that: the both sides, lower end of described conveying tape holder (7) are all fixed with breast board support (27), described breast board support (27) is provided with cold burden blanking breast board (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182231.9U CN204514442U (en) | 2015-03-28 | 2015-03-28 | Asphalt mixing plant cold burden storehouse flow rate-measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182231.9U CN204514442U (en) | 2015-03-28 | 2015-03-28 | Asphalt mixing plant cold burden storehouse flow rate-measuring device |
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| Publication Number | Publication Date |
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| CN204514442U true CN204514442U (en) | 2015-07-29 |
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| CN201520182231.9U Expired - Fee Related CN204514442U (en) | 2015-03-28 | 2015-03-28 | Asphalt mixing plant cold burden storehouse flow rate-measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748819A (en) * | 2015-03-28 | 2015-07-01 | 长安大学 | Cold material bin flow measuring device and method for asphalt mixture mixing plant |
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2015
- 2015-03-28 CN CN201520182231.9U patent/CN204514442U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748819A (en) * | 2015-03-28 | 2015-07-01 | 长安大学 | Cold material bin flow measuring device and method for asphalt mixture mixing plant |
| CN104748819B (en) * | 2015-03-28 | 2017-03-01 | 长安大学 | Asphalt mixing plant cold burden storehouse flow rate-measuring device and assay method |
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Granted publication date: 20150729 |