CN110704882B - Three-dimensional intelligent loading method for tubular object - Google Patents
Three-dimensional intelligent loading method for tubular object Download PDFInfo
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- CN110704882B CN110704882B CN201910844886.0A CN201910844886A CN110704882B CN 110704882 B CN110704882 B CN 110704882B CN 201910844886 A CN201910844886 A CN 201910844886A CN 110704882 B CN110704882 B CN 110704882B
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Abstract
The invention discloses a three-dimensional intelligent loading method for a tubular object. Through nesting the water pipe circulation, obviously reduce the loading space and occupy, this computational rate is extremely fast, and it is very big to promote space utilization's range, utilize to convert the cylinder to corresponding external cuboid, accomplish the vanning scheme fast through cuboid 3D vanning algorithm, the volume relation that utilizes cylinder and cuboid at last effectively gets water pipe loading volume and loading scheme, can provide decision-making information for the load wagon dispatch effectively, there is apparent water pipe intelligence loading efficiency, preload and load back volume estimation precision, water pipe nested space utilization, all be superior to the advantage of artificial experience method.
Description
Technical Field
The invention relates to the technical field of intelligent loading of tubular objects, in particular to a three-dimensional intelligent loading method for tubular objects.
Background
In practical application, two situations are mainly considered for the pretreatment of the water pipe to be loaded. Firstly, binding a small-size water supply pipe and not processing a large-size water drainage pipe; secondly, the small-size water supply pipe is bound and the large-size water discharge pipe is nested layer by layer. The first case, which is considered solely for the wrapping of the water supply pipes, is simpler to implement, while the second case makes greater use of the loading space. In consideration of different requirements and application scenes, the volume of the wrapped small-size water supply pipe and the volume of the nested large-size water supply pipe need to be estimated.
The prior art mainly uses a manual experience method to estimate the volume of the wrapped small water pipe, but the accuracy of volume estimation is lower due to the difference of the size and the number of the wrapped water pipes and the difference of manual experience. In addition, the volume estimation after the large-size water supply pipe is nested also judges and realizes the circular nesting of the drain pipes according to manual experience, so that the operation efficiency is low, and the space utilization rate is different, so that the space can be improved; in addition, the existing cylinder 3D boxing technology is immature and mainly adopts a manual boxing method, and due to the difference of the requirements of different customers on the types and the number of water pipes, the manual experience estimation mode has larger errors.
Disclosure of Invention
The invention provides a method for calculating the wrapping volume of a small-size water supply pipe and a method for calculating the circulating nesting volume of a large-size water discharge pipe.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a three-dimensional intelligent loading method for tubular objects, comprising a water pipe to be loaded, further comprising the steps of:
s101: firstly, inputting the quantity and the model parameters of the required water pipes;
s102: the water supply pipe is wrapped and rolled to change the quantity and model information of the water pipe;
s103: judging whether the drain pipes are nested or not;
s104: nesting the drain pipes according to whether the drain pipes are nested in the step S103, and if so, nesting the drain pipes and changing the quantity and model information of the drain pipes;
s105: then, the external layer number and the residual number are obtained according to the binding number, and meanwhile, the external layer number and the residual number are obtained according to whether the drain pipe is nested in the step S103 or not and not according to the binding number;
s106: simulating a water pipe into a corresponding external cuboid, and intelligently loading by using a cuboid three-dimensional boxing algorithm;
s107: converting the loading volume of the cuboid into the loading volume of the water pipe of the column body;
s108: finally, outputting the loading volume and the loading scheme;
the method also comprises a step of wrapping the excircle, and the method uses a double-fan-shaped circumscribed circle for calculation, and comprises the following steps:
s201: firstly, inputting the quantity and the model parameters of water pipes;
s202: obtaining the quantity Ni of each layer according to a formula of Ni floor (2. pi. L);
s203: obtaining the number of external layers and the residual number according to the binding number;
s204: respectively calculating the approximate area of the cross section of the bound water pipe by using a double-sector method or a method of adding the residual or deficient quantity to the circumscribed circle;
s205: obtaining the binding approximate volume according to the area;
s206: and finishing, and outputting a calculation result.
Preferably, in the three-dimensional intelligent loading method for the tubular object, the method further includes a water pipe nesting step, which is calculated according to the number of outermost circles, and includes the following steps:
s301: firstly, inputting the quantity and the model parameters of water pipes;
s302: then, according to the outer diameter of the water pipes, the water supply pipes are sequenced from large to small;
s303: circularly nesting according to the maximum compression ratio criterion of the characteristics or nesting volume of the water pipe;
s304: and finally, outputting the quantity and nesting state of all the nested water pipes.
Preferably, in the above three-dimensional intelligent loading method for tubular objects, if the number of water pipes is such that the circumscribed circle of the circular cross section is exactly sleeved into a whole layer, the circumscribed circle area is directly calculated, and the excircle binding step is performed by using the calculation of the double-sector circumscribed circle; otherwise, the water pipe nesting step is carried out according to the number of the outermost circles.
Preferably, in the above three-dimensional intelligent loading method for tubular objects, the nestable pipe diameter spacing is set to be 5 CM.
Preferably, in the above three-dimensional intelligent loading method for tubular objects, the cylinder volume is set to H × Pi × (D/2) ^2, and the cuboid volume is set to H × D ^ 2.
Preferably, in the above three-dimensional intelligent loading method for tubular objects, the cylindrical volume: the volume of the cuboid is set as Pi: 4.
the invention has the beneficial effects that:
1. compared with the prior art, the method for calculating the volume of the water pipe to be loaded realizes the calculation of the packing volume of the water supply pipe through a design algorithm, and obtains the high-precision estimation of the packing volume. By circularly nesting the water pipes, the occupied loading space is obviously reduced, the calculation speed is extremely high, and the amplitude of improving the space utilization rate is very large.
2. Experiments prove that under the condition that the packing quantity is 20-100 water pipes, the error of the result obtained by a water supply pipe packing volume calculation algorithm and the experimental test result is about 1%.
3. In a group of specific water pipe model and required quantity test data, the two calculation modes can achieve the space saving effect of more than 30%.
4. The cylinders are converted into corresponding external cuboids, the boxing scheme is quickly completed through a cuboid 3D boxing algorithm, and finally the loading volume and the loading scheme of the water pipe are effectively obtained through the volume relation between the cylinders and the cuboids, so that decision information can be effectively provided for the scheduling of the loading vehicle.
5. The technologies have the advantages of remarkable intelligent water pipe loading efficiency, pre-loading and post-loading volume estimation precision and water pipe nesting space utilization rate which are superior to those of a manual experience method.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the circumscribed circle wrapping structure of the present invention.
Fig. 2 is a schematic view of the nesting of water pipes according to the present invention.
FIG. 3 is a flow chart of the circumcircle wrapping process of the present invention.
Fig. 4 is a flow chart of the water pipe nesting of the invention.
Fig. 5 is an overall flowchart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, in a first embodiment, a three-dimensional intelligent loading method for a tubular object includes a water pipe to be loaded, and further includes the following steps:
s101: firstly, inputting the quantity and the model parameters of the required water pipes;
s102: the water supply pipe is wrapped and rolled to change the quantity and model information of the water pipe;
s103: judging whether the drain pipes are nested or not;
s104: nesting the drain pipes according to whether the drain pipes are nested in the step S103, and if so, nesting the drain pipes and changing the quantity and model information of the drain pipes;
s105: then, the external layer number and the residual number are obtained according to the binding number, and meanwhile, the external layer number and the residual number are obtained according to whether the drain pipe is nested in the step S103 or not and not according to the binding number;
s106: simulating a water pipe into a corresponding external cuboid, and intelligently loading by using a cuboid three-dimensional boxing algorithm;
s107: converting the loading volume of the cuboid into the loading volume of the water pipe of the column body;
s108: and finally, outputting the loading volume and the loading scheme.
Referring again to fig. 1, 2 and 4, comprising an outer circle wrapping step, a three-dimensional intelligent loading method for tubular objects, using double-sector circumscribed circle calculation, comprises the following steps:
s201: firstly, inputting the quantity and the model parameters of water pipes;
s202: obtaining the quantity Ni of each layer according to a formula of Ni floor (2. pi. L);
s203: obtaining the number of external layers and the residual number according to the binding number;
s204: respectively calculating the approximate area of the cross section of the bound water pipe by using a double-sector method or a method of adding the residual or deficient quantity to the circumscribed circle;
s205: obtaining the binding approximate volume according to the area;
s206: and finishing, and outputting a calculation result.
In a second embodiment, a three-dimensional intelligent loading method for a tubular object includes a water pipe to be loaded, and further includes the following steps:
s101: firstly, inputting the quantity and the model parameters of the required water pipes;
s102: the water supply pipe is wrapped and rolled to change the quantity and model information of the water pipe;
s103: judging whether the drain pipes are nested or not;
s104: nesting the drain pipes according to whether the drain pipes are nested in the step S103, and if so, nesting the drain pipes and changing the quantity and model information of the drain pipes;
s105: then, the external layer number and the residual number are obtained according to the binding number, and meanwhile, the external layer number and the residual number are obtained according to whether the drain pipe is nested in the step S103 or not and not according to the binding number;
s106: simulating a water pipe into a corresponding external cuboid, and intelligently loading by using a cuboid three-dimensional boxing algorithm;
s107: converting the loading volume of the cuboid into the loading volume of the water pipe of the column body;
s108: and finally, outputting the loading volume and the loading scheme.
Referring again to fig. 1, 3 and 5, a three-dimensional intelligent loading method for tubular objects comprises an outer circle wrapping step, and further comprises a water pipe nesting step, wherein the three-dimensional intelligent loading method comprises the following steps of calculating according to the number of outermost circles:
s301: firstly, inputting the quantity and the model parameters of water pipes;
s302: then, according to the outer diameter of the water pipes, the water supply pipes are sequenced from large to small;
s303: and then according to the water pipe characteristics or the maximum compression ratio criterion of the nesting volume, performing cyclic nesting, wherein the pipe diameter interval of the nestable pipe is set to be 5CM, the volume of the cylinder is set to be H multiplied by Pi multiplied by (D/2) ^2, the volume of the cuboid is set to be H multiplied by D ^2, and the volume of the cylinder is: the volume of the cuboid is set as Pi: 4;
s304: and finally, outputting the quantity and nesting state of all the nested water pipes.
According to the number of the outermost circles, the method is divided into three different modes corresponding to the three conditions;
1. wrapping in an external circle mode (in the case of small external residual quantity, the outer diameter of the water pipe is set to be D); a. the first layer of circumscribed circle is a water pipe, and the radius R is D/2; b. and (c) if the residual water pipes can be sufficiently externally connected with the layer, returning to the step b to continuously externally connect the next layer, or else, taking the previous layer as a whole, calculating the area of the circumscribed circle, and adding the cross-sectional area of the residual water pipes.
2. Wrapping in a circumscribed circle and square mode; (the external connection shortage quantity is large, the steps a and b are the same as the mode 1), c, if the residual water pipe can be sufficiently connected with the layer, the step b is returned to continue to be connected with the next layer, otherwise, the layer is taken as a whole, the area of the external connection circle is calculated, and the area of the cross section of the water pipe with the shortage quantity is subtracted.
3. The number of outermost circles is just moderate; case 1 and case 2 are calculated simultaneously and then averaged.
If the number of the water pipes enables the circumscribed circle of the circular section to be just sleeved into a whole layer, directly calculating the area of the circumscribed circle, and performing the excircle binding step by using the calculation of the double-sector circumscribed circle (embodiment I); otherwise, the water pipe nesting step is carried out according to the number of the outermost circles (embodiment II). The area is calculated by the method obtained by the two embodiments, and then the area is multiplied by the length of the water pipe to obtain the estimated volume. The invention discloses a drain pipe nesting and volume algorithm and a principle description:
firstly, sequencing all water pipes;
secondly, selecting a large water pipe, wherein the inner diameter is equal to the outer diameter, and the diameter interval of the embeddable sleeve pipes is set to be 5 cm;
thirdly, according to the criterion that the outer diameter is larger, but the length is less than or equal to the inner diameter of the large water pipe and the outer diameter is less than the inner diameter of the large water pipe, the small water pipe is preferentially selected (embodiment one); according to the criterion of the maximum volume ratio of the volume before nesting to the volume after nesting, a small water pipe which can be nested is preferentially selected (embodiment II);
fourthly, sleeve operation is carried out, the number of the water pipes is changed, the outer diameter of the small water pipe is used as the new inner diameter of the large water pipe, and the length of the nested water pipe is changed to be the maximum length of the nested water pipe;
fifthly, returning to the third step until all the large water pipes selected in the second step can not be nested;
sixthly, returning to the second step, and continuously selecting the remaining water pipes to perform a new round of sleeve pipe till the sleeve pipe is finished;
and seventhly, outputting the nesting scheme, the state information of the water pipe after the sleeve and the size of the nested volume.
According to the method, a cylinder is externally connected with a cuboid to obtain cuboid three-dimensional data, a heuristic simulated annealing algorithm is used for solving the problem of unconstrained cuboid three-dimensional boxing, and finally the volume of the boxed cuboid is converted into the cylinder boxing volume according to the volume relation between the cylinder and the corresponding externally connected cuboid, so that the final water pipe loading volume and the water pipe intelligent loading scheme are obtained.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A three-dimensional intelligent loading method for tubular objects, comprising a water pipe to be loaded, characterized in that: further comprising the steps of:
s101: firstly, inputting the quantity and the model parameters of the required water pipes;
s102: the quantity and model information of the water pipes are changed by wrapping and rolling the water supply pipes:
wherein wrap up the service pipe and use the calculation of the circumcircle of double fan-shaped, the step is as follows:
s201: firstly, inputting the quantity and the model parameters of water pipes;
s202: obtaining the quantity Ni of each layer according to a formula of Ni floor (2. pi. L);
s203: obtaining the number of external layers and the residual number according to the binding number;
s204: respectively calculating the approximate area of the cross section of the bound water pipe by using a double-sector method or a method of adding the residual or deficient quantity to the circumscribed circle:
according to the number of the outermost circles, the method is divided into three different modes corresponding to the three conditions;
case 1: the circumscribed circle square when the condition that external surplus quantity is few is wrapped, establishes the water pipe external diameter and is D: a. the first layer of circumscribed circle is a water pipe, and the radius R is D/2; b. the water pipe with the outer diameter D is externally connected with the external circle with the radius R of the previous layer, and the number of the water pipes which can be externally connected with the layer is N, wherein 2 multiplied by Pi multiplied (R + D/2) is N multiplied by D; c. if the residual water pipe can be sufficiently connected with the layer, returning to the step b to continue to connect with the next layer, otherwise, taking the previous layer as a whole, calculating the area of the circumscribed circle, and adding the area of the cross section of the residual water pipe;
case 2: wrapping in a circumscribed circle mode under the condition of large external shortage quantity; a. the first layer of circumscribed circle is a water pipe, and the radius R is D/2; b. the water pipe with the outer diameter D is externally connected with the external circle with the radius R of the previous layer, and the number of the water pipes which can be externally connected with the layer is N, wherein 2 multiplied by Pi multiplied (R + D/2) is N multiplied by D; c. if the residual water pipes can be sufficiently connected with the layer in an external mode, returning to the step b to continue connecting the next layer in the external mode, otherwise, taking the layer as a whole, calculating the area of the external circle, and subtracting the area of the cross section of the water pipes with the deficient quantity;
case 3: the number of outermost circles is just moderate; then case 1 and case 2 are calculated simultaneously and averaged;
s205: obtaining the binding approximate volume according to the area;
s206: after finishing, outputting a calculation result;
s103: judging whether the drain pipes are nested or not, if so, entering S104; if not, the step S105 is entered;
s104: nesting the drain pipes, and changing the quantity and model information of the drain pipes;
s105: obtaining the number of external layers and the residual number according to the binding number;
s106: simulating a water pipe into a corresponding external cuboid, and intelligently loading by using a cuboid three-dimensional boxing algorithm;
s107: converting the loading volume of the cuboid into the loading volume of the cylindrical water pipe;
s108: and finally, outputting the loading volume and the loading scheme.
2. A three-dimensional smart loading method for tubular objects according to claim 1, characterized in that: the nesting of the drain pipes is calculated according to the number of outermost circles, and the nesting comprises the following steps:
s301: firstly, inputting the quantity and the model parameters of water pipes;
s302: then, according to the outer diameter of the water pipes, the water supply pipes are sequenced from large to small;
s303: circularly nesting according to the maximum compression ratio criterion of the characteristics or nesting volume of the water pipe;
firstly, sequencing all water pipes;
secondly, selecting a large water pipe, wherein the inner diameter is equal to the outer diameter, and the diameter interval of the embeddable sleeve pipes is set to be 5 cm;
thirdly, preferably selecting a small water pipe according to the criterion that the outer diameter is larger, but the length is less than or equal to the length of the large water pipe and the outer diameter is less than the inner diameter of the large water pipe; according to the maximum rule of the volume ratio of the volume before nesting to the volume after nesting, preferentially selecting a small water pipe capable of performing nesting operation;
fourthly, sleeve operation is carried out, the number of the water pipes is changed, the outer diameter of the small water pipe is used as the new inner diameter of the large water pipe, and the length of the nested water pipe is changed to be the maximum length of the nested water pipe;
fifthly, returning to the third step until all the large water pipes selected in the second step can not be nested;
sixthly, returning to the second step, and continuously selecting the remaining water pipes to perform a new round of sleeve pipe till the sleeve pipe is finished;
seventhly, outputting the nesting scheme, the state information of the water pipe after the sleeve and the size of the nested volume;
s304: and finally, outputting the quantity and nesting state of all the nested water pipes.
3. A three-dimensional smart loading method for tubular objects according to claim 1, characterized in that: the diameter distance of the embeddable sleeve is set to be 5 CM.
4. A three-dimensional smart loading method for tubular objects according to claim 1, characterized in that: the cylinder volume is set at H multiplied by Pi multiplied by (D/2) 2, and the cuboid volume is set at H multiplied by D2.
5. The three-dimensional intelligent loading method for tubular objects according to claim 4, characterized in that: cylinder volume: the volume of the cuboid is set as Pi: 4.
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