CN114580102A - Driving torque calculation method and device for spiral structure of shield tunneling machine and storage medium - Google Patents
Driving torque calculation method and device for spiral structure of shield tunneling machine and storage medium Download PDFInfo
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Abstract
The application discloses a method, a device and a storage medium for calculating driving torque of a spiral structure of a shield machine, wherein the method for calculating driving torque of the spiral structure of the shield machine firstly obtains physical parameters of the spiral structure of the shield machine, and calculates to obtain spiral friction shear stress torque of the spiral structure of the shield machine according to the physical parameters; calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters; and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft. Therefore, the driving torque of the spiral structure of the shield machine can be accurately calculated, so that the operation of the shield machine can be adjusted according to the driving torque of the spiral structure of the shield machine.
Description
Technical Field
The application relates to the technical field of shield machines, in particular to a method and a device for calculating driving torque of a spiral structure of a shield machine and a storage medium.
Background
The shield machine is a tunnel boring machine using a shield method, a spiral structure of the shield machine is an important component of the earth pressure balance shield machine, the spiral structure of the shield machine continuously pushes materials to move for conveying through the rotation of a spiral blade, and the spiral structure is generally used for excavating and conveying muck in an earth bin of the shield machine. The driving torque of the spiral structure in the soil bin of the shield machine is one of important parameters of the shield machine, and the work of the shield machine can be adjusted according to the driving torque of the spiral structure in the soil bin of the shield machine.
However, the driving torque of the spiral structure in the earth bin of the shield tunneling machine is difficult to measure in engineering practice, and is often estimated in an empirical mode. However, with the expansion of the properties of the muck, the calculation precision of the empirical formula cannot meet the actual construction requirements, and a method capable of accurately calculating the driving torque of the spiral structure in the earth bin of the shield machine is urgently needed to better serve the engineering requirements.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the application provides a method and a device for calculating the driving torque of the spiral structure of the shield tunneling machine and a storage medium, and the driving torque of the spiral structure of the shield tunneling machine can be accurately calculated.
The embodiment of the first aspect of the application provides a method for calculating driving torque of a spiral structure of a shield tunneling machine, which comprises the following steps:
acquiring physical parameters of a spiral structure of the shield tunneling machine;
calculating to obtain the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters;
calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters;
and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft.
The method for calculating the driving torque of the spiral structure of the shield tunneling machine at least has the following beneficial effects: according to the method for calculating the driving torque of the spiral structure of the shield machine, the physical parameters of the spiral structure of the shield machine are firstly obtained, and the spiral friction shear stress torque of the spiral structure of the shield machine is calculated according to the physical parameters; calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters; and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft. Therefore, the driving torque of the spiral structure of the shield machine can be accurately calculated, so that the operation of the shield machine can be adjusted according to the driving torque of the spiral structure of the shield machine.
According to some embodiments of the first aspect of the present application, the calculating the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameter includes:
calculating to obtain the average helical angle of the helical blade according to the physical parameters;
and calculating to obtain the spiral friction shear stress torque according to the physical parameters and the average spiral angle of the spiral blade.
According to some embodiments of the first aspect of the present application, the physical parameters comprise: pitch, radius of the screw shaft, radius of the screw blade; calculating the average helical angle of the helical blade according to the physical parameters, wherein the calculation comprises the following steps:
calculating to obtain the spiral blade outer edge spiral angle according to the pitch, the spiral blade radius and a first formula; wherein the first formula is:
wherein s is the pitch, R is the radius of the helical blade,
the outer edge helix angle of the helical blade is set;
calculating a helical angle at the spiral shaft according to the pitch, the radius of the spiral shaft and a second formula; wherein the second formula is:
wherein s is the screw pitch, r is the radius of the screw shaft,
the helical angle of the spiral shaft;
and calculating to obtain the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade and the helical angle at the helical shaft.
According to some embodiments of the first aspect of the present application, the calculating the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade and the helical angle at the helical axis includes:
calculating to obtain the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade, the helical angle at the helical shaft and a third formula; wherein the third formula is:
wherein,
the spiral angle of the spiral shaft is set,
the spiral angle of the outer edge of the spiral blade,
the average pitch angle of the helical blades.
According to some embodiments of the first aspect of the present application, the physical parameters further comprise helical blade thickness, muck flow delivery angle, equivalent shear stress and helical length;
the calculating the helical friction shear stress torque according to the physical parameters and the average helical angle of the helical blade comprises:
calculating to obtain the spiral friction shear stress torque according to the physical parameters, the average spiral angle of the spiral blade and a fourth formula; wherein the fourth formula is:
wherein, taueIn order for the equivalent shear stress to be the stated equivalent shear stress,
for the mean pitch angle, L, of the helical blade0The helical length, e the helical blade thickness, theta the slag flow conveying angle, R the helical blade radius, s the pitch, T2The helical friction shear stress torque is used.
According to some embodiments of the first aspect of the present application, the physical parameters include a passive soil pressure coefficient, a muck bulk density, a burial depth, an angle between the screw axis and a horizontal line, an angle between the action point and the horizontal line, and a distance between the action point and an axis of the screw axis;
the calculating and obtaining the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters comprises the following steps:
calculating to obtain the soil pressure of the action point according to the physical parameters and a fifth formula; wherein the fifth formula is:
Sp＝kp·γ.(H-sinα·f)·cosφ，
wherein k ispIs the passive soil pressure coefficient, gamma is the muck volume weight, H is the burial depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the screw shaft, phi is the included angle between the screw shaft and the horizontal line, SpThe soil pressure at the point of action;
and calculating the end face friction torque of the screw shaft according to the physical parameters and the soil pressure of the action point.
According to some embodiments of the first aspect of the present application, the physical parameters further include a screw shaft radius, a coefficient of friction between the slag and an end face of the screw shaft;
the calculating to obtain the end face friction torque of the screw shaft according to the physical parameters and the soil pressure of the action point comprises the following steps:
calculating to obtain the end face friction torque of the screw shaft according to the physical parameters, the soil pressure of the action point and a sixth formula; wherein the sixth formula is:
wherein mu is the friction coefficient between the muck and the end face of the spiral shaft, SpF is the distance between the action point and the axis of the screw shaft, alpha is the included angle between the action point and the horizontal line, r is the radius of the screw shaft, and T is the earth pressure of the action point1Is the face friction torque.
According to some embodiments of the first aspect of the present application, the calculating the driving torque of the shield machine helical structure according to the helical friction shear stress torque and the end face friction torque of the screw shaft includes:
calculating to obtain the driving torque of the spiral structure of the shield machine according to the spiral friction shear stress torque, the end face friction torque of the spiral shaft and a seventh formula; wherein the seventh formula is:
Tt＝T1+T2，
wherein, T1For said end-face friction torque, T2For said helical friction shear stress torque, TtThe driving torque of the spiral structure of the shield tunneling machine is obtained.
The embodiment of the second aspect of the present application provides a driving torque calculation device for a spiral structure of a shield tunneling machine, including:
the acquisition module is used for acquiring physical parameters of the spiral structure of the shield tunneling machine;
a computing module to:
calculating to obtain the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters;
calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield machine according to the physical parameters;
and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft.
In a third aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable signals, and the computer-executable signals are configured to perform:
the method for calculating the driving torque of the spiral structure of the shield tunneling machine according to the embodiment of the first aspect of the application.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present application is further described with reference to the following figures and examples, in which:
fig. 1 is a flowchart illustrating steps of a method for calculating a driving torque of a spiral structure of a shield tunneling machine according to some embodiments of the present disclosure;
FIG. 2 is a flow chart of steps for calculating a helical friction shear torque according to some embodiments of the present application;
FIG. 3 is a schematic diagram of a portion of a shield tunneling machine spiral structure according to some embodiments of the present application;
FIG. 4 is a flowchart illustrating the steps of calculating the average pitch angle of the helical blades according to some embodiments of the present application;
FIG. 5 is a schematic illustration of the soil pressure of a shield tunneling machine screw structure of some embodiments of the present application during the transport of muck;
fig. 6 is a flowchart illustrating steps for calculating a friction torque at an end surface of a screw shaft according to some embodiments of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
It should be noted that although functional block divisions are provided in the system drawings and logical orders are shown in the flowcharts, in some cases, the steps shown and described may be performed in different orders than the block divisions in the systems or in the flowcharts. The terms etc. in the description and claims and the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means 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 present application. 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 shield machine is a tunnel boring machine using a shield method, when the shield machine excavates, excavated muck is located in a soil bin, a spiral structure of the shield machine needs to be used for stretching into the soil bin, the spiral structure comprises a spiral and spiral blades, the spiral blades are spirally arranged along the axis of a spiral shaft, and the spiral structure of the shield machine continuously pushes the muck in the soil bin to move and convey the muck through the rotation of the spiral blades so as to remove the muck from the soil bin. In the operation process of the shield machine, the driving torque of the spiral structure is one of important parameters of the shield machine, the operation of the shield machine can be adjusted according to the driving torque of the spiral structure in the shield soil bin, and the related technology obtains the driving torque of the spiral structure through experience estimation, and the obtained result is inaccurate.
Referring to fig. 1, in a first aspect, an embodiment of the present application provides a driving torque calculation method for a spiral structure of a shield tunneling machine, including, but not limited to, step S100, step S200, step S300, and step S400.
S100, acquiring physical parameters of a spiral structure of the shield tunneling machine;
step S200, calculating to obtain the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters;
step S300, calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters;
and S400, calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft.
According to the method for calculating the driving torque of the spiral structure of the shield machine, the physical parameters of the spiral structure of the shield machine are firstly obtained, and the spiral friction shear stress torque of the spiral structure of the shield machine is calculated according to the physical parameters; calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters; and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft. Compared with the driving torque estimated through experience in the related technology, the driving torque of the spiral structure of the shield machine can be accurately calculated, so that the operation of the shield machine can be adjusted according to the driving torque of the spiral structure of the shield machine. It should be noted that, when the spiral structure of the shield tunneling machine operates, one part of the spiral structure extends into the soil bin, and the other part does not extend into the soil bin, and the driving torque of the spiral structure of the shield tunneling machine in the present application refers to the driving torque of the part of the spiral structure of the shield tunneling machine extending into the soil bin.
It is understood that, referring to fig. 2, step S200 may include, but is not limited to, step S210 and step S220.
Step S210, calculating to obtain an average helical angle of the helical blade according to the physical parameters;
and step S220, calculating to obtain the spiral friction shear stress torque according to the physical parameters and the average spiral angle of the spiral blade.
According to the driving torque calculation method of the spiral structure of the shield tunneling machine, the average spiral angle of the spiral blade is obtained through calculation, and then the spiral friction shear stress torque is obtained through calculation according to the physical parameters and the average spiral angle of the spiral blade.
It can be understood that, referring to fig. 3, fig. 3 is a partial structural schematic diagram of a helical structure of the shield tunneling machine according to the embodiment of the present application, and the physical parameters include a pitch, a radius of a helical shaft, and a radius of a helical blade; referring to fig. 4, step S210 may include, but is not limited to, step S211, step S212, and step S213.
Step S211, calculating to obtain a helical angle of the outer edge of the helical blade according to the pitch, the radius of the helical blade and a first formula; wherein the first formula is:
wherein s is the pitch, R is the radius of the helical blade,
the outer edge helical angle of the helical blade;
step S212, calculating a helical angle at the helical shaft according to the helical pitch, the radius of the helical shaft and a second formula; wherein the second formula is:
wherein s is the screw pitch, r is the radius of the screw axis,
the helix angle at the spiral shaft;
step S213, calculating to obtain the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade and the helical angle of the helical shaft.
In the method for calculating the driving torque of the spiral structure of the shield tunneling machine according to the embodiment of the application, through the steps S211 to S213, the spiral angle of the outer edge of the spiral blade and the spiral angle of the spiral shaft are obtained through calculation, and then the average spiral angle of the spiral blade is obtained through calculation according to the spiral angle of the outer edge of the spiral blade and the spiral angle of the spiral shaft.
It is understood that step S213 may include the following steps:
calculating to obtain the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade, the helical angle at the helical shaft and a third formula; wherein the third formula is:
wherein,
the spiral angle of the spiral shaft is set,
the spiral angle of the outer edge of the spiral blade,
is the average helix angle of the helical blade.
It can be understood that the included angle formed by the tangent of the point on the helical blade and the horizontal projection is the helical angle of the helical blade; the spiral angle at the spiral shaft is an included angle formed by the projection of the tangent line of the point at the joint of the spiral blade and the spiral shaft and the horizontal direction of the tangent line; the spiral angle of the outer edge of the spiral blade is an included angle formed by the tangent line of the point of the outer edge of the spiral blade and the projection of the point in the horizontal direction; the average helical angle of the helical blade can be calculated through the helical angle of the outer edge of the helical blade, the helical angle at the helical shaft and the third formula, so that the helical friction shear stress torque can be conveniently obtained through subsequent calculation.
It will be appreciated that the physical parameters also include the helical blade thickness, the muck flow delivery angle, the equivalent shear stress and the helical length;
calculating to obtain the spiral friction shear stress torque according to the physical parameters and the average spiral angle of the spiral blade, wherein the calculation comprises the following steps:
calculating to obtain a spiral friction shear stress torque according to the physical parameters, the average spiral angle of the spiral blade and a fourth formula; wherein the fourth formula is:
wherein, taueIn order to achieve an equivalent shear stress,
is the average helix angle, L, of the helical blade0Is the helical length, e is the helical blade thickness, theta is the muck flow delivery angle, R is the helical blade radius, s is the pitch, T2Is a helical friction shear stress torque. L is0The spiral length of the spiral structure extending into the soil bin of the shield machine is adopted.
It can be understood that, referring to fig. 5, fig. 5 is a schematic diagram of soil pressure when the spiral structure of the shield tunneling machine of the embodiment of the present application transports muck, and the physical parameters include a passive soil pressure coefficient, a muck volume weight, a burial depth, an included angle between the spiral shaft and a horizontal line, an included angle between an action point and the horizontal line, and a distance between the action point and an axis of the spiral shaft; the action point is any point of the end surface of the spiral shaft, in the figure 5, H is the buried depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the spiral shaft, and phi is the included angle between the spiral shaft and the horizontal line.
Referring to fig. 6, step S300 may include, but is not limited to, step S310 and step S320.
Step S310, calculating to obtain the soil pressure of the action point according to the physical parameters and a fifth formula; wherein the fifth formula is:
Sp＝kp·γ.(H-sinα·f)·cosφ，
wherein k ispIs the passive soil pressure coefficient, gamma is the slag soil volume weight, H is the buried depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the screw shaft, phi is the included angle between the screw shaft and the horizontal line, SpThe soil pressure as the point of action;
and step S320, calculating the end face friction torque of the screw shaft according to the physical parameters and the soil pressure of the action point.
It can be understood that when the spiral structure of the shield tunneling machine transports the muck in the soil bin, the spiral structure obliquely extends into the soil bin, so that an included angle phi exists between the spiral shaft and the horizontal line. According to the calculation method of the embodiment of the application, through the steps from S310 to S320, the soil pressure of any action point can be calculated according to the fifth formula, and then the end face friction torque can be calculated through the physical parameters and the soil pressure of the action point.
It is understood that the physical parameters also include the radius of the screw shaft, the coefficient of friction between the slag and the end face of the screw shaft;
step S320 includes the steps of:
calculating to obtain the end face friction torque of the screw shaft according to the physical parameters, the soil pressure of the action point and a sixth formula; wherein the sixth formula is:
wherein mu is the friction coefficient between the muck and the end face of the spiral shaft, SpThe earth pressure of the point of action, f is the point of actionThe distance between the spiral shaft and the axis of the spiral shaft, alpha is the included angle between the action point and the horizontal line, r is the radius of the spiral shaft, and T1Is the face friction torque. According to the driving torque calculation method of the spiral structure of the shield tunneling machine, the earth pressure of the action point is integrated through the sixth formula, the end face friction torque of the spiral shaft can be obtained, and the calculation result is accurate.
Substituting the fifth formula into the sixth formula, the sixth formula may be rewritten as:
wherein k ispIs the passive soil pressure coefficient, gamma is the muck volume weight, H is the burial depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the spiral shaft, phi is the included angle between the spiral shaft and the horizontal line, mu is the friction coefficient between muck and the end face of the spiral shaft, r is the radius of the spiral shaft, T is the radius of the spiral shaft1Is the face friction torque.
It is understood that step S400 includes the following steps:
calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque, the end face friction torque of the spiral shaft and a seventh formula; wherein the seventh formula is:
Tt＝T1+T2，
wherein, T1Is end face friction torque, T2A helical friction shear stress torque; t istThe driving torque of the spiral structure of the shield tunneling machine is the driving torque of the spiral section of the spiral structure of the shield tunneling machine extending into the soil bin.
By applying friction torque T to the end face1Shear stress torque T of friction with screw2Substituting the seventh formula, the seventh formula can be rewritten to obtain the expression of the driving torque of the spiral structure of the shield tunneling machine:
wherein k ispIs the passive soil pressure coefficient, gamma is the muck volume weight, H is the burial depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the spiral shaft, phi is the included angle between the spiral shaft and the horizontal line, mu is the friction coefficient between muck and the end face of the spiral shaft, r is the radius of the spiral shaft, tau is the radius of the spiral shafteIn order to achieve an equivalent shear stress,
is the average helix angle, L, of the helical blade0Is the helical length, e is the helical blade thickness, theta is the muck flow delivery angle, R is the helical blade radius, s is the pitch, TtThe driving torque of the spiral structure of the shield machine.
For convenience of calculation, the thickness of the helical blade, the difference between the helical angle of the outer edge of the helical blade and the helical angle at the helical axis can be ignored, and the helical angle of the outer edge of the helical blade is taken as the average helical angle of the helical blade, so that the expression of the driving torque of the helical structure of the shield tunneling machine can be simplified as follows:
wherein k ispIs the passive soil pressure coefficient, gamma is the muck volume weight, H is the burial depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the spiral shaft, phi is the included angle between the spiral shaft and the horizontal line, mu is the friction coefficient between muck and the end face of the spiral shaft, r is the radius of the spiral shaft, tau is the radius of the spiral shafteIn order to achieve an equivalent shear stress,
is the outer edge helix angle, L, of the helical blade0Is the spiral length, theta is the conveying angle of the slag flow, R is the radius of the spiral blade, s is the pitch, TtThe driving torque of the spiral structure of the shield machine.
The embodiment of the second aspect of the present application provides a driving torque calculation apparatus for a spiral structure of a shield tunneling machine, including:
the acquisition module is used for acquiring physical parameters of the spiral structure of the shield tunneling machine;
a computing module to:
calculating to obtain the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters;
calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters;
and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft.
The driving torque calculation device for the spiral structure of the shield tunneling machine obtains physical parameters of the spiral structure of the shield tunneling machine through the obtaining module, then calculates the spiral friction shear stress torque of the spiral structure of the shield tunneling machine and the end face friction torque of the spiral shaft through the calculation module, and calculates the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft. Therefore, the driving torque of the spiral structure of the shield machine can be accurately calculated, so that the operation of the shield machine can be adjusted according to the driving torque of the spiral structure of the shield machine.
It should be noted that the driving torque calculation device of the spiral structure of the shield machine in the above-mentioned embodiment is based on the same inventive concept as the driving torque calculation method of the spiral structure of the shield machine, and therefore, the corresponding contents of the driving torque calculation method of the spiral structure of the shield machine in the above-mentioned embodiment are also applicable to the driving torque calculation device of the spiral structure of the shield machine in the above-mentioned embodiment, and have the same implementation principle and technical effect, and are not described in detail here to avoid redundancy of description contents.
In a third aspect, embodiments of the present application provide a computer-readable storage medium, which stores computer-executable signals for performing:
the method for calculating the driving torque of the spiral structure of the shield tunneling machine according to the embodiment of the first aspect of the application.
For example, the above-described method steps S100 to S400 in fig. 1, method steps S210 to S220 in fig. 2, method steps S211 to S213 in fig. 4, and method steps S310 to S320 in fig. 6 are performed.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (10)
1. A driving torque calculation method of a spiral structure of a shield tunneling machine is characterized by comprising the following steps:
acquiring physical parameters of a spiral structure of the shield tunneling machine;
calculating to obtain the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters;
calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters;
and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft.
2. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to the claim 1, wherein the calculating the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters comprises:
calculating to obtain the average helical angle of the helical blade according to the physical parameters;
and calculating to obtain the helical friction shear stress torque according to the physical parameters and the average helical angle of the helical blade.
3. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to claim 2, wherein the physical parameters include: pitch, radius of the screw shaft, radius of the screw blade; calculating the average helical angle of the helical blade according to the physical parameters, wherein the calculation comprises the following steps:
calculating to obtain the outer edge helical angle of the helical blade according to the pitch, the radius of the helical blade and a first formula; wherein the first formula is:
wherein s is the pitch, R is the radius of the helical blade,
the outer edge helix angle of the helical blade is set;
calculating to obtain a helical angle at the helical shaft according to the screw pitch, the radius of the helical shaft and a second formula; wherein the second formula is:
wherein s is the screw pitch, r is the radius of the screw shaft,
the helical angle of the spiral shaft;
and calculating to obtain the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade and the helical angle at the helical shaft.
4. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to claim 3, wherein the calculating the average spiral angle of the spiral blades according to the spiral angle of the outer edge of the spiral blade and the spiral angle at the spiral shaft comprises:
calculating to obtain the average helical angle of the helical blade according to the helical angle of the outer edge of the helical blade, the helical angle at the helical shaft and a third formula; wherein the third formula is:
wherein,
the spiral angle of the spiral shaft is set,
is the spiralThe helical angle of the outer edge of the blade,
the average pitch angle of the helical blades.
5. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to claim 3, wherein the physical parameters further include a spiral blade thickness, a muck flow delivery angle, an equivalent shear stress and a spiral length;
the calculating the helical friction shear stress torque according to the physical parameters and the average helical angle of the helical blade comprises:
calculating to obtain the spiral friction shear stress torque according to the physical parameters, the average spiral angle of the spiral blade and a fourth formula; wherein the fourth formula is:
wherein, taueIn order for the equivalent shear stress to be the stated equivalent shear stress,
for the mean pitch angle, L, of the helical blade0The helical length, e the helical blade thickness, theta the slag flow conveying angle, R the helical blade radius, s the pitch, T2The helical friction shear stress torque is used.
6. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to claim 1, wherein the physical parameters include a passive soil pressure coefficient, a muck bulk density, a burial depth, an included angle between a spiral shaft and a horizontal line, an included angle between an action point and the horizontal line, and a distance between the action point and an axis of the spiral shaft;
the calculating and obtaining the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters comprises the following steps:
calculating to obtain the soil pressure of the action point according to the physical parameters and a fifth formula; wherein the fifth formula is:
Sp＝kp·γ.(H-sinα·f)·cosφ，
wherein k ispIs the passive soil pressure coefficient, gamma is the muck volume weight, H is the burial depth, alpha is the included angle between the action point and the horizontal line, f is the distance between the action point and the axis of the screw shaft, phi is the included angle between the screw shaft and the horizontal line, SpThe soil pressure at the point of action;
and calculating the end face friction torque of the screw shaft according to the physical parameters and the soil pressure of the action point.
7. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to claim 6, wherein the physical parameters further include a radius of the spiral shaft, and a friction coefficient between the muck and an end face of the spiral shaft;
the calculating to obtain the end face friction torque of the screw shaft according to the physical parameters and the soil pressure of the action point comprises the following steps:
calculating to obtain the end face friction torque of the screw shaft according to the physical parameters, the soil pressure of the action point and a sixth formula; wherein the sixth formula is:
wherein mu is the friction coefficient between the muck and the end face of the spiral shaft, SpIs the soil pressure of the action point, f is the distance between the action point and the axis of the screw shaft, alpha is the included angle between the action point and the horizontal line, r is the radius of the screw shaft, T1Is the face friction torque.
8. The method for calculating the driving torque of the spiral structure of the shield tunneling machine according to claim 1, wherein the calculating the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft comprises:
calculating to obtain the driving torque of the spiral structure of the shield machine according to the spiral friction shear stress torque, the end face friction torque of the spiral shaft and a seventh formula; wherein the seventh formula is:
Tt＝T1+T2，
wherein, T1For said end-face friction torque, T2For said helical friction shear stress torque, TtThe driving torque of the spiral structure of the shield tunneling machine is obtained.
9. A driving torque calculation device of a spiral structure of a shield tunneling machine is characterized by comprising:
the acquisition module is used for acquiring physical parameters of the spiral structure of the shield tunneling machine;
a computing module to:
calculating to obtain the spiral friction shear stress torque of the spiral structure of the shield tunneling machine according to the physical parameters;
calculating to obtain the end face friction torque of the spiral shaft of the spiral structure of the shield tunneling machine according to the physical parameters;
and calculating to obtain the driving torque of the spiral structure of the shield tunneling machine according to the spiral friction shear stress torque and the end face friction torque of the spiral shaft.
10. A computer-readable storage medium having computer-executable signals stored thereon for performing:
the method for calculating the driving torque of the spiral structure of the shield tunneling machine according to any one of claims 1 to 8.
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| CN202210173657.2A CN114580102A (en) | 2022-02-24 | 2022-02-24 | Driving torque calculation method and device for spiral structure of shield tunneling machine and storage medium |
| PCT/CN2023/077931 WO2023160621A1 (en) | 2022-02-24 | 2023-02-23 | Method and apparatus for calculating driving torque of spiral structure of tunnel boring machine, and storage medium |
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| WO2023160621A1 (en) * | 2022-02-24 | 2023-08-31 | 五邑大学 | Method and apparatus for calculating driving torque of spiral structure of tunnel boring machine, and storage medium |
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| JP5937954B2 (en) * | 2012-11-19 | 2016-06-22 | 株式会社神戸製鋼所 | A device for measuring the dynamic characteristics of a centrifugal rotating machine, and a centrifugal rotating machine. |
| CN111414574B (en) * | 2020-03-17 | 2023-08-08 | 南京理工大学 | Method for rapidly calculating soil discharge amount of soil pressure balance shield machine |
| CN114580102A (en) * | 2022-02-24 | 2022-06-03 | 五邑大学 | Driving torque calculation method and device for spiral structure of shield tunneling machine and storage medium |
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| WO2023160621A1 (en) * | 2022-02-24 | 2023-08-31 | 五邑大学 | Method and apparatus for calculating driving torque of spiral structure of tunnel boring machine, and storage medium |
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