CN113919089B - Design method of single-sided discharge hopper - Google Patents
Design method of single-sided discharge hopper Download PDFInfo
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Abstract
The application relates to a design method of a single-sided discharge hopper, which comprises the steps of selecting and opening a model template in a new family of revit software, constructing a cuboid model with the length, width and height equal to those of the single-sided discharge hopper model, and then shearing the cuboid model to obtain the single-sided discharge hopper model; all parameters used in the construction process are expressed by adopting the length, width, height, bottom opening width, bottom opening length and angle of the single-sided discharge hopper, and the parameters, the length, the width, the height, the bottom opening width, the bottom opening length and the angle are set as the inherent parameters of a newly built single-sided discharge hopper model in software, so that the length, the width, the height, the bottom opening width, the bottom opening length and the angle of the single-sided discharge hopper model are adjustable. The application realizes that the single-sided discharge hopper model meeting the requirements is obtained by adjusting the parameters of the single-sided discharge hopper model, effectively improves the working efficiency and simplifies the design flow.
Description
Technical Field
The application relates to the field of industrial design, in particular to a design method of a single-sided discharge hopper.
Background
At present, in industrial design, a single-sided discharging hopper is mostly designed in two dimensions or three dimensions by adopting AutoCAD; when the AutoCAD is adopted to carry out the two-dimensional design of the single-sided discharge hopper, the length, width, height, angle and other parameters of the single-sided discharge hopper are determined according to experience, the shape and the volume of the single-sided discharge hopper are designed and calculated through a series of operations, and if the volume does not meet the requirement or the angle of the single-sided discharge hopper in the design scheme is changed, the length, width, height and other parameters are required to be readjusted, and the shape and the volume of the single-sided discharge hopper are redesigned and calculated. When the AutoCAD is adopted to carry out the three-dimensional design of the single-sided discharging hopper, if the single-sided discharging hopper is designed according to the preset parameters, if the volume does not meet the requirement or the angle of the single-sided discharging hopper of the design scheme is changed, the shape and the volume of the single-sided discharging hopper need to be redesigned and calculated.
It can be seen that the two-dimensional or three-dimensional design is performed by adopting AutoCAD, so that the same disadvantages exist, when the volume of the designed single-sided discharge hopper does not meet the requirement or the angle of the single-sided discharge hopper of the design scheme is changed, the single-sided discharge hopper is required to be designed again and calculated, the process of designing the single-sided discharge hopper meeting the requirement is complex, a large amount of repeated work is required, and the efficiency is low.
Disclosure of Invention
In order to simplify the design process of the single-sided discharge hopper, the working efficiency is improved. The application provides a design method of a single-sided discharge hopper.
The design method of the single-sided discharge hopper provided by the application adopts the following technical scheme:
a design method of a single-sided discharge hopper comprises the following steps:
In a new family of revit software, selecting and opening a model template, establishing a first reference plane parallel to a reference elevation at a certain height from the reference elevation, drawing a ray with an included angle with the first reference plane as a first included angle as a first reference line by taking an intersection point of the first reference plane and a central left and right reference plane on a central front and rear reference plane as an endpoint, and setting the first included angle as an adjustable parameter;
constructing a cuboid model with the length, width and height identical to those of a single-sided discharging hopper, wherein a first reference line passes through a first surface of the cuboid model, and the endpoint is arranged on a second surface of the cuboid model, and the length, width and height are set as adjustable parameters; wherein the first surface and the second surface are surfaces of the cuboid model consisting of a length and a width and consisting of a height and a width respectively;
newly establishing a bottom opening projection length, a first parameter, a second parameter and a third parameter, and setting the bottom opening projection length as an adjustable parameter; wherein the first parameter is equal to the product of the tangent value of the first included angle and the projection length of the bottom opening; the second parameter is the difference between the height of the cuboid model and the first parameter; the third parameter is the difference between the length and the projection length of the bottom opening;
Cutting off a first triangular prism with the bottom surface on a fifth surface and a sixth surface on the cuboid model, wherein two side surfaces of the first triangular prism are respectively arranged on the first surface and the second surface, and the common side length of the two side surfaces and the bottom surface is respectively set as the bottom opening projection length and the first parameter; wherein the fifth surface and the sixth surface are two parallel surfaces of the cuboid model and are formed by long and high;
A second triangular prism with a bottom surface cut off on the cuboid model, a fifth surface and a sixth surface, and two side surfaces on the third surface and the first surface respectively, wherein the common side lengths of the side surfaces and the bottom surface on the third surface and the first surface are respectively set to be the height and the third parameter; wherein the third surface is a surface of the rectangular parallelepiped model parallel and opposite to the second surface;
Newly-built parameters of half width of a bottom opening and fourth parameters; setting the half width of the bottom opening as an adjustable parameter; wherein the fourth parameter is the product of the quotient of the cosine value of the high and second included angles and the cosine value of the third included angle; the second included angle is the arctangent value of the third parameter and the high quotient; the third included angle is the difference between the second included angle and the first included angle;
establishing a second reference line parallel to the first reference line through the intersection point of the third surface and the fourth surface of the cuboid model on the front and rear reference planes of the center, and setting the distance between the first reference line parallel and the second reference line as the fourth parameter; wherein the fourth surface is a surface of the rectangular parallelepiped model parallel and opposite to the first surface;
And picking up the first reference line end plane as a second reference plane, and shearing the sheared surface of the cuboid model on the second reference plane by utilizing the fourth parameter, so that the surface width on the second reference plane is equal to the bottom half width, thereby obtaining the single-sided discharge hopper model with adjustable length, width, height, bottom width, bottom length and angle.
Optionally, in the family newly created by revit software, selecting and opening a model template, establishing a first reference plane parallel to the reference elevation at a certain height from the reference elevation, drawing a ray with an included angle with the first reference plane as a first included angle as a first reference line by taking an intersection point of the first reference plane and the central left and right reference planes on the central front and rear reference planes as an endpoint, and setting the first included angle as an adjustable parameter, including:
Opening revit software, creating a family, selecting and opening a model template;
Selecting a front view in an elevation view of the model template and establishing a first reference plane parallel to a reference elevation at a height from the reference elevation;
Drawing a ray by taking the intersection point of the first reference plane and the central left and right reference planes at the front and rear reference planes of the center as an endpoint to serve as a first reference line, and creating a parameter of an included angle between the first reference line and the first reference plane to serve as a first included angle;
And setting the first included angle as an adjustable parameter.
Optionally, the model templates include metric conventional model templates, line-based model templates, face-based model templates, and point-based model templates.
Optionally, the construction is with cuboid model that single face discharge hopper length, width and height are the same, first reference line is followed the first face of cuboid model passes, the extreme point is on the second face of cuboid model, and set up length, width and height are adjustable parameter, include:
turning to a reference elevation view;
Creating a rectangle with one side aligned with the central left and right reference planes on the side of the first reference line;
Setting the length and width of a rectangle to be equal to the length and width of a single-sided discharge hopper, setting the distance between the width and a front and rear reference plane of the center to be an equal division mode, setting the distance between a stretching starting point and a stretching end point to be equal to the height of the single-sided discharge hopper, and constructing to obtain the cuboid model; the absolute value of the stretching starting point is smaller than the distance between the reference elevation and the first reference plane and is larger than the product of the length of the cuboid model and the tangent value of the first included angle subtracted from the distance between the reference elevation and the first reference plane;
and setting the length, width and height of the cuboid model as adjustable parameters.
Optionally, the shearing out the first triangular prism with the bottom surface on the fifth surface and the sixth surface on the cuboid model, two sides of the first triangular prism are respectively on the first surface and the second surface, and the common side lengths of the two sides and the bottom surface are respectively set as the bottom opening projection length and the first parameter, including:
Turning to a front view, drawing a first triangle taking an end point of the first reference line as a vertex and taking the first reference line as a hypotenuse on the cuboid model by using a hollow stretching command, and aligning and locking the other two sides of the first triangle with the first surface and the second surface of the cuboid model respectively;
setting a fifth parameter and a sixth parameter; the fifth parameter and the sixth parameter are respectively negative numbers and positive numbers, and the absolute values of the fifth parameter and the sixth parameter are half of the width of the cuboid model;
Setting the side length of the first triangle on the first surface as the projection length of the bottom opening and the side length of the first triangle on the second surface as the first parameter; setting a stretching starting point of a hollow stretching command as a fifth parameter and a stretching end point as a sixth parameter to obtain the first triangular prism;
and shearing the stretched parts of the two right-angle sides of the first triangle from the cuboid model by using a shearing command.
Optionally, the shearing the second triangular prism with the bottom surface on the fifth surface and the sixth surface and the two side surfaces on the third surface and the first surface on the cuboid model, and the common side lengths of the side surfaces on the third surface and the first surface and the bottom surface are respectively set to be the height and the third parameter, including:
Drawing a second triangle with the intersection point of the first reference line and the first surface as a vertex on the cuboid model cut off by using a hollow stretching command, and aligning and locking two sides of the second triangle with the first surface and the third surface respectively;
Setting the side length of the second triangle on the first surface as a third parameter, and setting the side length of the second triangle on the third surface as the height of the cuboid model; setting a stretching starting point of a hollow stretching command as a fourth parameter and a stretching end point as a fifth parameter to obtain the second triangular prism;
and shearing the stretched parts of the two right-angle sides of the second triangle from the cuboid model by using a shearing command.
Optionally, the plane of the end of the first reference line is a second reference plane, and the fourth parameter is used to shear the surface of the rectangular solid model after front cutting on the second reference plane, so that the surface width on the second reference plane is equal to the bottom half width, thereby obtaining a single-sided discharge hopper with adjustable length, width, height, bottom width, bottom length and angle, including:
the first reference line end part picking plane is a second reference plane;
Turning to a left view of a model template, drawing a third triangle on the second surface by using a hollow stretching command and taking the intersection point of the second surface, the fourth surface and the fifth surface as a first vertex, and locking one side of the third triangle with the fifth surface;
Setting the side length of the side locked with the fifth surface as the fourth parameter, and setting the distance from the vertex not passed by the side to the front and rear reference planes of the center as the half width of the bottom opening;
Turning to a model template front view, controlling the third triangle to be perpendicular to the second reference plane, and enabling the first vertex to be always on a common side of the fourth face and the fifth face; setting a stretching starting point and a stretching end point, so that the stretching of the third triangle is larger than all the rest parts of the cuboid model;
shearing out the stretched parts of the two right-angle sides of the third triangle from the residual cuboid model by using a shearing command;
Turning to a left view of the model template, drawing a fourth triangle on the second surface by using a hollow stretching command and taking an intersection point of the second surface, the fourth surface and the sixth surface as a second vertex, and locking one side of the fourth triangle with the sixth surface;
Setting the side length of the side locked with the sixth surface as the fourth parameter, and setting the distance from the vertex, through which the side length is not passed, of the fourth parameter to the front and rear reference plane of the center as the bottom half width;
Turning to a model template rear view, controlling the fourth triangle to be perpendicular to the second reference plane, and enabling the fourth vertex to be always on the common side of the fourth face and the sixth face; setting a stretching starting point and a stretching end point, so that the stretching of the fourth triangle is larger than all the rest parts of the cuboid model;
And shearing out the stretched parts of the two right-angle sides of the fourth triangle from the residual cuboid model by using a shearing command.
In summary, in the process of constructing the single-sided discharge hopper model, all the parameters are expressed by adopting the length, width, height, bottom opening width, bottom opening length and angle of the single-sided discharge hopper, and the parameters, the length, the width, the height, the bottom opening width, the bottom opening length and the angle are set in software as the inherent parameters of the newly built single-sided discharge hopper model, so that when any one or more of the length, the width, the height, the bottom opening width, the bottom opening length and the angle of the designed single-sided discharge hopper model are adjusted, the software recalculates other parameters related to the adjustment parameters, and a set of single-sided discharge hopper parameter data is obtained again, and the size and the shape of the single-sided discharge hopper model are readjusted according to the new parameter data, so that the single-sided discharge hopper model meeting the requirements is obtained by adjusting the parameters of the single-sided discharge hopper model, repeated construction of the single-sided discharge hopper model is not needed, the working efficiency is effectively improved, and the design flow is simplified.
Drawings
FIG. 1 is a flow chart of a design method of a single-sided discharge hopper provided by an embodiment of the application.
Fig. 2 is a schematic diagram of creating a rectangle at a reference elevation view in an embodiment of the application.
FIG. 3 is a schematic diagram of creating a first triangle in front view in an embodiment of the application;
FIG. 4 is a schematic illustration of a portion of an embodiment of the present application with the first triangle cut out in front view and the two right sides stretched;
FIG. 5 is a schematic diagram of creating a second triangle in front view in an embodiment of the application;
FIG. 6 is a schematic illustration of a portion of an embodiment of the present application with the second triangle cut away from the right angle side in front view;
FIG. 7 is a schematic diagram of creating a second reference line parallel to the first reference line in a front view in an embodiment of the application;
FIG. 8 is a schematic diagram of creating a third triangle and a fourth triangle in a left view in an embodiment of the application;
FIG. 9 is a schematic view of the embodiment of the present application with the third triangle adjusted at two right angles to be perpendicular to the first reference line in front view;
FIG. 10 is a left side view of a single-sided discharge hopper model obtained by the design method provided by the embodiment of the application;
FIG. 11 is a perspective view of a single-sided discharge hopper model obtained by the design method provided by the embodiment of the application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings 1 to 11 and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The embodiment of the application discloses a design method of a single-sided discharge hopper, which adopts revit modeling tools to design the single-sided discharge hopper with adjustable parameters, and can randomly adjust various parameters according to requirements to obtain the hopper with the required volume, and the design is only needed once, so that repeated work is avoided. Referring to fig. 1, the design method of the single-sided discharge hopper includes the steps of:
Step S100, in a family newly created by revit software, selecting and opening a model template, establishing a first reference plane parallel to a reference elevation at a certain height from the reference elevation, drawing a ray with an included angle with the first reference plane as a first included angle as a first reference line by taking an intersection point of the first reference plane and the left and right reference planes of the center on the front and rear reference planes of the center as an endpoint, and setting the first included angle as an adjustable parameter.
Step 200, constructing a cuboid model with the same length, width and height as those of the single-sided discharging hopper, enabling a first reference line to pass through a first surface of the cuboid model, enabling an endpoint to be arranged on a second surface of the cuboid model, and setting the length, the width and the height as adjustable parameters; wherein the first surface and the second surface are surfaces of a rectangular parallelepiped mold composed of a length and a width and composed of a height and a width, respectively.
Step S300, newly establishing a parameter bottom port projection length, a first parameter, a second parameter and a third parameter, and setting the bottom port projection length as an adjustable parameter; wherein the first parameter is equal to the product of the tangent value of the first included angle and the projection length of the bottom opening; the second parameter is the difference between the height of the cuboid model and the first parameter; the third parameter is the difference between the length and the projection length of the bottom opening.
Step S400, shearing first triangular prisms with bottom surfaces on a fifth surface and a sixth surface on a cuboid model, wherein two side surfaces of the first triangular prism are respectively on the first surface and the second surface (a third side surface is on a surface where a first reference line is located, namely a second reference plane mentioned later), and the common side length of the two side surfaces and the bottom surface is respectively set as a bottom opening projection length and a first parameter; the fifth surface and the sixth surface are two parallel surfaces of the cuboid model and are formed by long and high.
S500, shearing second triangular prisms with bottom surfaces on a fifth surface and the sixth surface and two side surfaces on a third surface and a first surface respectively on a cuboid model, wherein the common side lengths of the side surfaces and the bottom surfaces on the third surface and the first surface are respectively set to be high and a third parameter; the third surface is a surface of the cuboid model which is parallel and opposite to the second surface.
Step S600, newly establishing a parameter bottom half width and a fourth parameter; setting the half width of the bottom opening as an adjustable parameter; the fourth parameter is the product of the quotient of the cosine value of the second included angle and the cosine value of the third included angle; the second included angle is the difference between the third included angle and the first included angle, and the third included angle is the arc tangent value of the quotient of the third parameter and the high value;
Step S700, establishing a second reference line parallel to the first reference line through the intersection point of the third surface and the fourth surface of the cuboid model on the front and rear reference planes of the center, and setting the distance between the first reference line parallel and the second reference line as a fourth parameter; wherein the fourth surface is a surface of the rectangular parallelepiped mold opposed to the first surface in parallel.
And S800, picking up the end plane of the first reference line as a second reference plane, and shearing the surface of the sheared cuboid model on the second reference plane by utilizing a fourth parameter to ensure that the surface width on the second reference plane is equal to the half width of the bottom mouth, thereby obtaining the single-sided discharge hopper model with adjustable length, width, height, bottom mouth width, bottom mouth length and angle (first included angle).
In the process of constructing the single-sided discharge hopper model, all the parameters are related to the length, width, height, bottom opening width, bottom opening length and angle of the single-sided discharge hopper, and the parameters are newly built into the intrinsic parameters of the single-sided discharge hopper in software together with the length, width, height, bottom opening width, bottom opening length and angle, so that when any one or more of the length, width, height, bottom opening width, bottom opening length and angle of the single-sided discharge hopper model is adjusted, the software recalculates the parameters related to the parameters, and adjusts the size and shape of the single-sided discharge hopper model according to the obtained new set of intrinsic parameters, thereby realizing that the single-sided discharge hopper model meeting the requirements is obtained by adjusting the parameters of the single-sided discharge hopper model, avoiding repeated construction of the single-sided discharge hopper model, effectively improving the working efficiency and simplifying the design flow.
The following describes a design method of a single-sided discharge hopper according to the present application in detail with reference to fig. 2 to 11.
In the present embodiment, step S100 includes the steps of:
opening revit software, creating a family, and selecting a model template; the model templates comprise metric conventional model templates, line-based model templates, surface-based model templates, point-based model templates and other model templates selectable in revit software.
After opening the model template, a front view in the elevation view of the model template is selected and a first reference plane T1 parallel to the reference elevation XY is established at a certain height from the reference elevation XY. In revit software, the template comprises a front and rear reference plane YZ (corresponding to the YZ plane of the three-dimensional coordinate system), a left and right reference plane XZ (corresponding to the XZ plane of the three-dimensional coordinate system), a reference elevation XY (corresponding to the XY plane of the three-dimensional coordinate system), a front view in the elevation view is selected in the template, and the front and rear reference plane YZ is selected, at this time, the interface can see the left and right reference plane XZ and the reference elevation, which are two lines intersecting at an origin O (0, 0), i.e. the Y axis and the Z axis.
Drawing a ray as a first reference line S1, aligning and locking the end point of the first reference line S1 with an intersection point O1 of a first reference plane T1 and a central left and right reference plane XZ on a central front and rear reference plane YZ, and establishing an included angle new parameter between the first reference line S1 and the first reference plane T1 as a first included angle beta; setting the first included angle β as the adjustable parameter, and then executing step S200.
In the present embodiment, step S200 constructs a cuboid model V by:
Turning to a reference level XY-view (the YZ plane and the XZ plane can be seen to intersect at an origin O), and using a stretching command, creating a rectangle V1 on one side of the first reference line S1, and aligning and locking one side of the rectangle V1 with the left and right reference planes XZ of the center; setting the length and width of the rectangle V1 to be equal to the length L and width B of the single-sided discharge hopper, setting the distance between the width B and the front and back reference plane YZ of the center to be equal to an equal division mode EQ (shown in figure 2), and setting the distance between the stretching starting point and the stretching end point to be equal to the height H of the single-sided discharge hopper; in order to ensure that the first reference line S1 passes through the first surface of the cuboid model V, the absolute value of the stretching start point is smaller than the distance L 'between the reference elevation and the first reference plane, and is larger than the product of the tangent value of the first included angle subtracted from the distance between the reference elevation and the first reference plane and the length, that is, is larger than (L' -Ltan β), and the distance from the stretching start point to the stretching end point is equal to the height H.
Although a rectangle V1 is shown on the XY plane, and the midpoint of one side of the rectangle V1 coinciding with the center left-right reference plane XZ is the origin O (0, 0), in practice, a rectangular parallelepiped model V is constructed in the entire three-dimensional space using a stretching command, the faces (second face and fourth face) of the rectangular parallelepiped model V composed of the height H and the width B are on the center left-right reference plane XZ, the opposite faces of the rectangular parallelepiped model V displayable in one view at the reference level XY are divided into two halves by the center front-rear plane YZ, and the rectangular parallelepiped model V is on one side with the first reference line S1; setting the width B, the length L and the height H as adjustable parameters to obtain a cuboid model V with adjustable length, width and height, and then executing step S300.
In step S300, newly creating a parameter bottom port projection length l, a first parameter f, a second parameter c and a third parameter g, and setting the bottom port projection length l as an adjustable parameter; where f=l×tan (β), c=h-f, g=l-L.
In the present embodiment, step S400 includes the steps of:
setting a fifth parameter d and a sixth parameter e; where d= -B/2, e = B/2.
Turning to the front view in the elevation view, drawing a first triangle RT1 with the end point O1 of the first reference line S1 as the vertex and the first reference line S1 as the hypotenuse on the cuboid model V by using a hollow stretching command, and aligning and locking the other two sides of the first triangle RT1 with a first face (face composed of length and width) and a second face (face composed of height and width) of the cuboid model V respectively; the right-angle side arranged on the first surface is equal to the projection length l of the bottom opening, and the right-angle side arranged on the second surface is equal to the first parameter f, so that the length of the hypotenuse on the first reference line S1 is equal to the length of the bottom opening, as shown in fig. 3; the stretching starting point is set as a fifth parameter d, and the stretching end point is set as a sixth parameter e; wherein d= -B/2, e = B/2, thus a first triangular prism (pentahedron) is hollowed out on the cuboid model V.
Cutting out the stretched parts of the two right-angle sides of the first triangle RT1 from the cuboid model V by using a cutting command, and designing the length of a bottom opening to obtain a heptagon as shown in fig. 4; step S500 is then performed.
In this embodiment, step S500 implements shearing of the second triangular prism by:
drawing a second triangle RT2 taking the intersection point of the first reference line S1 and the first surface as the vertex on the cuboid model V sheared by the step S400 by using a hollow stretching command, and aligning and locking two sides of the second triangle RT2 with the first surface and a third surface (opposite to the second surface) of the cuboid model V respectively; the side length of the side set on the first face is equal to the third parameter g, and the side length of the side on the third face is equal to the height H of the rectangular parallelepiped model V, as shown in fig. 5; the stretching starting point is set as a fifth parameter d, and the stretching end point is set as a sixth parameter e; in this way, a second triangular prism (pentahedron) is hollowed out on the cuboid model V.
The two right-angle side stretched portions of the second triangle RT2 are cut out from the cuboid model V remaining after step S400 using a cut command, as shown in fig. 6, thus obtaining an irregular hexahedron.
In step S600 of this embodiment, a parameter bottom half width b and a fourth parameter h are newly created; setting the half width b of the bottom opening as an adjustable parameter; wherein:
h＝[H/cos(arctan((L-l)/H))]×cos(arctan((L-l)/H)-β))；
arctan ((L-L)/H) is the second included angle, and arctan ((L-L)/H) -beta is the third included angle.
Then, in step S700, a second reference line S2 parallel to the first reference line S1 is established above the first reference line S1 through the intersection point of the third surface and the fourth surface (opposite to the first surface) of the rectangular parallelepiped on the YZ plane, and then, the distance between the first reference line S1 and the second reference line S2 is set to be a fourth parameter h, as shown in fig. 7.
Step S800 in this embodiment is performed by:
The end plane of the pick-up first reference line S1 is a second reference plane, that is, the second reference plane is the plane on which the first reference line S1 is located and is perpendicular to the fifth and sixth faces of the rectangular parallelepiped model V.
Turning to the left view of the model template, drawing a third triangle RT3 on the second surface by using a hollow stretching command and taking the intersection point of the second surface, the fourth surface and the fifth surface as a first vertex A1, locking one side of the third triangle RT3 with the fifth surface of the cuboid model V, setting the side length locked with the fifth surface as a fourth parameter h, and setting the distance from the vertex which does not pass through the side (the side length locked with the fifth surface) to a front-back reference plane YZ of the center as a bottom half width B, namely, the third triangle RT3 is a right triangle, wherein the side lengths of two right angles are h and (B/2-B) respectively; as shown in fig. 8;
turning to the front view, the third triangle RT3 is controlled to be perpendicular to the first reference line S1, i.e. perpendicular to the second reference plane, and the first vertex A1 is always on the common side of the fourth and fifth faces; setting a stretching starting point and a stretching end point so that the stretching of the third triangle RT3 is larger than all the rest parts of the cuboid model V after the step S500, as shown in FIG. 9; when the first vertex A1 is on the common side of the fourth and fifth faces, the third triangle RT3 is adjusted to be perpendicular to the first reference line S1, and the minimum distance between the stretching start point and the stretching end point is the length of the cuboid model V, so that the stretching of the third triangle RT3 can cover all the remaining parts of the cuboid model V.
The stretched portions of the two right-angle sides (the side on the fifth plane and the side that does not pass through the first vertex A1) of the third triangle RT3 are cut out from the cuboid model remaining after step 500 using a cut command.
Then turning to the left view of the model template, drawing a fourth triangle RT4 on the other side of the second surface through a hollow stretching command by using the same method, and shearing the width of the bottom opening, wherein the method is as follows:
Turning to the left view of the model template, drawing a fourth triangle RT4 on the second surface by using a hollow stretching command and taking the intersection point of the second surface, the fourth surface and the sixth surface as a second vertex A2, and locking one side of the fourth triangle RT4 with the sixth surface; setting the side length of the side locked with the sixth side as a fourth parameter h, and setting the distance from the vertex of a fourth triangle RT4, through which the side (the side length locked with the sixth side) does not pass, to the center front-rear reference plane YZ as a bottom half width b; namely, the fourth triangle RT4 is a right triangle, and the side lengths of two right angles are h and (B/2-B) respectively; as shown in fig. 8;
Turning to a back view of the model template, controlling the fourth triangle RT4 to be perpendicular to the second reference plane, and enabling the second vertex A2 to be always on the common edge of the fourth surface and the sixth surface; the stretching start point and the stretching end point are set so that the stretching of the fourth triangle is larger than all the rest of the cuboid model.
The stretched portions of the two right-angle sides (the side on the sixth side and the side that does not pass through the second vertex A2) of the fourth triangle RT4 are cut out from the remaining rectangular parallelepiped model using a cut command.
The single-sided discharge hopper model is designed through the steps, as shown in fig. 10 and 11, the single-sided discharge hopper model designed by the method provided by the application is led into the project, and parameters such as the length, the width, the height, the angle and the like of the single-sided discharge hopper can be adjusted randomly, so that the purpose of adjusting the volume of the single-sided discharge hopper is achieved, and the method is very convenient.
The list of parameters set in the present application is as follows:
the single-sided discharge hopper model has a length L, a width B, a height H, a first included angle beta, a bottom opening half width B and a bottom opening projection length L; and
A first parameter f, f=l×tan (β);
a second order parameter c, c=h-f;
a third parameter g, g=l-L;
A fourth parameter H, h= [ H/cos (arctan ((L-L)/H)) ] ×cos (arctan ((L-L)/H) - β));
a fifth parameter d, d= -B/2;
sixth parameter e, e=b/2.
The foregoing description of the preferred embodiments of the application is not intended to limit the scope of the application in any way, including the abstract and drawings, in which case any feature disclosed in this specification (including abstract and drawings) may be replaced by alternative features serving the same, equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
Claims (4)
1. The design method of the single-sided discharge hopper is characterized by comprising the following steps of:
In a new family of revit software, selecting and opening a model template, establishing a first reference plane parallel to a reference elevation at a certain height from the reference elevation, drawing a ray with an included angle with the first reference plane as a first included angle as a first reference line by taking an intersection point of the first reference plane and a central left and right reference plane on a central front and rear reference plane as an endpoint, and setting the first included angle as an adjustable parameter;
constructing a cuboid model with the length, width and height identical to those of a single-sided discharging hopper, wherein a first reference line passes through a first surface of the cuboid model, and the endpoint is arranged on a second surface of the cuboid model, and the length, width and height are set as adjustable parameters; wherein the first surface and the second surface are surfaces of the cuboid model consisting of a length and a width and consisting of a height and a width respectively;
newly establishing a bottom opening projection length, a first parameter, a second parameter and a third parameter, and setting the bottom opening projection length as an adjustable parameter; wherein the first parameter is equal to the product of the tangent value of the first included angle and the projection length of the bottom opening; the second parameter is the difference between the height of the cuboid model and the first parameter; the third parameter is the difference between the length and the projection length of the bottom opening;
Cutting off a first triangular prism with the bottom surface on a fifth surface and a sixth surface on the cuboid model, wherein two side surfaces of the first triangular prism are respectively arranged on the first surface and the second surface, and the common side length of the two side surfaces and the bottom surface is respectively set as the bottom opening projection length and the first parameter; wherein the fifth surface and the sixth surface are two parallel surfaces of the cuboid model and are formed by long and high;
A second triangular prism with a bottom surface cut off on the cuboid model, a third surface and a first surface on the fifth surface and the sixth surface on the two side surfaces, and the common side lengths of the side surfaces and the bottom surface on the third surface and the first surface are respectively set as the height and the third parameter; wherein the third surface is a surface of the rectangular parallelepiped model parallel and opposite to the second surface;
Newly-built parameters of half width of a bottom opening and fourth parameters; setting the half width of the bottom opening as an adjustable parameter; wherein the fourth parameter is the product of the quotient of the cosine value of the high and second included angles and the cosine value of the third included angle; the second included angle is the arctangent value of the third parameter and the high quotient; the third included angle is the difference between the second included angle and the first included angle;
establishing a second reference line parallel to the first reference line through the intersection point of the third surface and the fourth surface of the cuboid model on the front and rear reference planes of the center, and setting the distance between the first reference line parallel and the second reference line as the fourth parameter; wherein the fourth surface is a surface of the rectangular parallelepiped model parallel and opposite to the first surface;
Picking up a first reference line end plane as a second reference plane, shearing the surface of the sheared cuboid model on the second reference plane by utilizing the fourth parameter, and enabling the surface width on the second reference plane to be equal to the bottom mouth half width, thereby obtaining a single-sided discharge hopper model with adjustable length, width, height, bottom mouth width, bottom mouth length and angle;
the construction of the cuboid model with the same length, width and height as the single-sided discharge hopper, the first reference line passes through the first surface of the cuboid model, the end point is arranged on the second surface of the cuboid model, and the length, the width and the height are set as adjustable parameters, and the construction comprises the following steps:
turning to a reference elevation view;
Creating a rectangle with one side aligned with the central left and right reference planes on the side of the first reference line;
Setting the length and width of a rectangle to be equal to the length and width of a single-sided discharge hopper, setting the distance between the width and a front and rear reference plane of the center to be an equal division mode, setting the distance between a stretching starting point and a stretching end point to be equal to the height of the single-sided discharge hopper, and constructing to obtain the cuboid model; the absolute value of the stretching starting point is smaller than the distance between the reference elevation and the first reference plane and is larger than the product of the length of the cuboid model and the tangent value of the first included angle subtracted from the distance between the reference elevation and the first reference plane;
setting the length, width and height of the cuboid model as adjustable parameters;
The first triangular prism with the bottom surface on the fifth surface and the sixth surface is cut off on the cuboid model, two side surfaces of the first triangular prism are respectively on the first surface and the second surface, and the common side lengths of the two side surfaces and the bottom surface are respectively set to be the bottom opening projection length and the first parameter, and the method comprises the following steps:
Turning to a front view, drawing a first triangle taking an end point of the first reference line as a vertex and taking the first reference line as a hypotenuse on the cuboid model by using a hollow stretching command, and aligning and locking the other two sides of the first triangle with the first surface and the second surface of the cuboid model respectively;
setting a fifth parameter and a sixth parameter; the fifth parameter and the sixth parameter are respectively negative numbers and positive numbers, and the absolute values of the fifth parameter and the sixth parameter are half of the width of the cuboid model;
Setting the side length of the first triangle on the first surface as the projection length of the bottom opening and the side length of the first triangle on the second surface as the first parameter; setting a stretching starting point of a hollow stretching command as a fifth parameter and a stretching end point as a sixth parameter to obtain the first triangular prism;
Shearing the stretched parts of the two right-angle sides of the first triangle from the cuboid model by using a shearing command;
The second triangular prism with a bottom surface cut off on the cuboid model on the fifth surface and the sixth surface, two side surfaces on the third surface and the first surface respectively, and the common side lengths of the side surfaces on the third surface and the first surface and the bottom surface are respectively set as the height and the third parameter, and the second triangular prism comprises:
Drawing a second triangle with the intersection point of the first reference line and the first surface as a vertex on the cuboid model cut off by using a hollow stretching command, and aligning and locking two sides of the second triangle with the first surface and the third surface respectively;
Setting the side length of the second triangle on the first surface as a third parameter, and setting the side length of the second triangle on the third surface as the height of the cuboid model; setting a stretching starting point of a hollow stretching command as a fourth parameter and a stretching end point as a fifth parameter to obtain the second triangular prism;
and shearing the stretched parts of the two right-angle sides of the second triangle from the cuboid model by using a shearing command.
2. The design method according to claim 1, wherein in the family created by revit software, selecting and opening a model template, establishing a first reference plane parallel to the reference elevation at a certain height from the reference elevation, drawing a ray with a first included angle with the first reference plane as a first reference line by taking an intersection point of the first reference plane and the central left and right reference planes at the central front and rear reference planes as an end point, and setting the first included angle as an adjustable parameter, including:
Opening revit software, creating a family, selecting and opening a model template;
Selecting a front view in an elevation view of the model template and establishing a first reference plane parallel to a reference elevation at a height from the reference elevation;
Drawing a ray by taking the intersection point of the first reference plane and the central left and right reference planes at the front and rear reference planes of the center as an endpoint to serve as a first reference line, and creating a parameter of an included angle between the first reference line and the first reference plane to serve as a first included angle;
And setting the first included angle as an adjustable parameter.
3. The design method of claim 2, wherein the model templates comprise metric conventional model templates, line-based model templates, face-based model templates, and point-based model templates.
4. The design method according to claim 1, wherein the pick-up first reference line end plane is a second reference plane, and the front-cut surface of the rectangular parallelepiped model on the second reference plane is sheared by the fourth parameter, so that the surface width on the second reference plane is equal to the bottom half width, thereby obtaining a single-sided discharge hopper with adjustable length, width, height, bottom width, bottom length and angle, comprising:
the first reference line end part picking plane is a second reference plane;
Turning to a left view of a model template, drawing a third triangle on the second surface by using a hollow stretching command and taking the intersection point of the second surface, the fourth surface and the fifth surface as a first vertex, and locking one side of the third triangle with the fifth surface;
Setting the side length of the side locked with the fifth surface as the fourth parameter, and setting the distance from the vertex not passed by the side to the front and rear reference planes of the center as the half width of the bottom opening;
Turning to a model template front view, controlling the third triangle to be perpendicular to the second reference plane, and enabling the first vertex to be always on a common side of the fourth surface and the fifth surface; setting a stretching starting point and a stretching end point, so that the stretching of the third triangle is larger than all the rest parts of the cuboid model;
shearing out the stretched parts of the two right-angle sides of the third triangle from the residual cuboid model by using a shearing command;
Turning to a left view of the model template, drawing a fourth triangle on the second surface by using a hollow stretching command and taking an intersection point of the second surface, the fourth surface and the sixth surface as a second vertex, and locking one side of the fourth triangle with the sixth surface;
Setting the side length of the side locked with the sixth surface as the fourth parameter, and setting the distance from the vertex, through which the side length is not passed, of the fourth parameter to the front and rear reference plane of the center as the bottom half width;
Turning to a model template rear view, controlling the fourth triangle to be perpendicular to the second reference plane, and enabling the second vertex to be always on the common side of the fourth face and the sixth face; setting a stretching starting point and a stretching end point, so that the stretching of the fourth triangle is larger than all the rest parts of the cuboid model;
And shearing out the stretched parts of the two right-angle sides of the fourth triangle from the residual cuboid model by using a shearing command.
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| CN105217335A (en) * | 2015-10-14 | 2016-01-06 | 湖南省九方环保机械有限公司 | A kind of automatic discharge unit |
| CN106642347A (en) * | 2016-12-29 | 2017-05-10 | 天津市建筑设计院 | Fan coil module parametric design method based on BIM |
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| CN206156114U (en) * | 2016-09-23 | 2017-05-10 | 中国中材国际工程股份有限公司 | A novel discharge hopper for car is unloaded |
| CN107145695B (en) * | 2017-06-27 | 2021-07-13 | 中建一局集团建设发展有限公司 | Parametric modeling production method of prefabricated external wall panel with assembled shear wall structure |
| EP3644198B1 (en) * | 2018-10-26 | 2024-04-17 | Dassault Systèmes | 3d design of b-rep skin |
| US10902580B2 (en) * | 2019-04-18 | 2021-01-26 | Applied Software Technology, Inc. | Auto-dimensioning REVIT models |
| CN110472302B (en) * | 2019-07-25 | 2023-02-28 | 中国中材国际工程股份有限公司 | Method for drawing pipeline support and hanger by Revit |
| CN110745583B (en) * | 2019-10-31 | 2021-03-16 | 三一汽车制造有限公司 | Automatic positioning system for vehicle charging and asphalt station |
| CN113323153A (en) * | 2021-06-08 | 2021-08-31 | 中国建筑第八工程局有限公司 | Bending-twisting aluminum alloy structure in existing complex space and construction method |
| CN113420358B (en) * | 2021-06-30 | 2022-12-09 | 杭州群核信息技术有限公司 | Method, device and system for converting grid model into parameterized model |
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| CN105217335A (en) * | 2015-10-14 | 2016-01-06 | 湖南省九方环保机械有限公司 | A kind of automatic discharge unit |
| CN106642347A (en) * | 2016-12-29 | 2017-05-10 | 天津市建筑设计院 | Fan coil module parametric design method based on BIM |
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