Vehicle base throat area automatic connection structure and implementation method

Abstract

The invention discloses a vehicle base throat area automatic connection structure and an implementation method, and relates to the technical field of vehicle traffic, the vehicle base throat area automatic connection structure comprises a storeroom, a plurality of storeroom station tracks are arranged in the storeroom, initial station tracks to be connected are arranged outside the storeroom, and the initial station tracks are connected with the storeroom station tracks through combinations of track lines and turnouts. And the combination of the track line and the turnout forms a throat area part. The method comprises the following steps: acquiring parameter information of a throat area; initial station track information and storehouse station track information are obtained according to the parameter information of the throat area; and automatically connecting the initial station track and the storehouse station track according to the initial station track information and the storehouse station track information. The connecting steps of the throat area can be simplified, automatic connection of the throat area is achieved, and the shortest length of the throat area is obtained.

Description

Technical Field

[0001] The present invention relates to the field of vehicle traffic technology, and more specifically, to a structure and implementation method for automatic connection of a throat area of ​​a vehicle base. Background Art

[0002] The vehicle base is an important part of the urban rail transit line. It is used for parking, maintenance and overhaul of rail transit vehicles. Its engineering has the characteristics of large area, complex system and high cost. The throat area is where the turnouts converge and is the only way for various operations in the vehicle base. Reasonable connection of the throat area is a layout plan that meets the requirements of smooth process flow and intensive land use.

[0003] However, currently, the existing throat area connection steps are repetitive and cumbersome, and the design is not reasonable, resulting in low operating efficiency in the throat area. Summary of the invention

[0004] In view of the problem in the prior art that the throat area connection steps are repetitive and cumbersome, the design is not reasonable, and the operation efficiency of the throat area is low, the present invention provides a structure and implementation method for automatic connection of the throat area of ​​a vehicle base, which can simplify the connection steps of the throat area, realize automatic connection of the throat area and obtain the shortest throat area length.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides a structure for automatic connection of a vehicle base throat area, comprising:

[0007] A warehouse has several warehouse tracks inside and an initial track to be connected outside. The initial track is connected to several warehouse tracks through a combination of track lines and switches, and the combination of track lines and switches forms a throat area.

[0008] As in the above-mentioned structure of the automated connection of the throat area of ​​the vehicle base, further, several of the warehouse tracks are parallel to each other.

[0009] As for the structure of the automatic connection of the throat area of ​​the vehicle base mentioned above, further, a plurality of the warehouse tracks can be connected to one of the initial tracks or can be connected to a plurality of the initial tracks at the same time.

[0010] In a second aspect, the present invention provides a method for realizing automatic connection of a vehicle base throat area, based on the above-mentioned structure of automatic connection of a vehicle base throat area, which comprises the following steps:

[0011] Get parameter information of throat area;

[0012] Obtaining initial track information and warehouse track information according to the parameter information of the throat area;

[0013] The initial track and the warehouse track are automatically connected according to the initial track information and the warehouse track information.

[0014] As described above, the method for realizing automatic connection of the throat area of ​​the vehicle base, further, the step of obtaining parameter information of the throat area includes:

[0015] Obtain turnout information and track line information in the throat area;

[0016] The parameter information of the throat area is obtained by performing restrictions according to the turnout information and the track line information.

[0017] As described above, the method for realizing automatic connection of the throat area of ​​the vehicle base, further, the step of obtaining parameter information of the throat area by limiting according to the turnout information and track line information comprises:

[0018] The turnout information includes the type of turnout, the turnout center coordinates, the turnout angle, the direction between the turnsouts, and the azimuth of the turnout;

[0019] The track line information is other information in the throat area except the turnout information, which includes straight line information and curve information. The straight line information includes the coordinates of the starting and ending points, and the curve information includes the actual distance length;

[0020] The type of the turnout is preset with a corresponding turnout number, and the corresponding preset curve length of the turnout, the preset straight length of the turnout, the preset distance length between the turnouts, and the preset distance length of the curved track are generated according to the turnout number, and the following restrictions are met:

[0021] The actual curve length of the track line is not less than the preset curve length of the track line;

[0022] The actual straight length of the track line is not less than the preset straight length of the track line;

[0023] The actual distance between the switches is greater than the preset distance between the switches;

[0024] The actual distance between the turnout and the end point of the curved track is greater than the preset distance between the turnout and the curved track;

[0025] Parameter information of the throat region is obtained according to the restriction condition.

[0026] As described above, in the method for realizing automatic connection of the throat area of ​​the vehicle base, further, the step of obtaining the initial track information and the warehouse track information according to the parameter information of the throat area includes:

[0027] Identify initial track location information and warehouse track location information according to the parameter information of the throat area;

[0028] A warehouse track and an initial track to be connected are selected according to the initial track positioning information and the warehouse track positioning information, and corresponding initial track information and warehouse track information are generated according to the warehouse track and the initial track to be connected.

[0029] As described above, the method for realizing automatic connection of the throat area of ​​the vehicle base, further, the step after automatically connecting the initial track and the warehouse track according to the initial track information and the warehouse track information also includes:

[0030] Calculate the initial track and warehouse track in the connected throat area to obtain the total track length of the initial track and warehouse track and the total length of the throat area;

[0031] According to the total track length of the initial track and the warehouse track and the total length of the throat area, the parameters of the connected initial track and the warehouse track are adjusted, and the total track length of the adjusted initial track and the warehouse track and the total length of the throat area are calculated;

[0032] Repeat the above adjustments until the shortest total length of the initial track and the warehouse track and the total length of the throat area are obtained.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention can solve the problem of repeated and cumbersome throat area connection steps, simplify turnout arrangement and track connection steps, and make the throat area connection more intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A schematic diagram of a structure for automatic connection of a throat area of ​​a vehicle base according to an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of a left-opening turnout according to an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of a right-opening turnout according to an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of track connection between two turnouts according to an embodiment of the present invention;

[0040] Figure 5 It is a schematic diagram of two ends of a turnout and an end of a flat curve according to an embodiment of the present invention;

[0041] Figure 6 It is a schematic diagram between two adjacent curves in an embodiment of the present invention;

[0042] Figure 7 It is a flow chart of a method for realizing automatic connection of a throat area of ​​a vehicle base according to an embodiment of the present invention;

[0043] In the figure, Sij represents the straight line segment number, i is the initial track line number, and j is the serial number of the straight line in the straight line segment connected to the track line; Lcij represents the branch to curve segment number, i is the initial track line number, and j is the serial number in the line segment. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Example:

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of the embodiments of the present invention are intended to cover non-exclusive inclusions, for example, a process, method, component, product or device that includes a series of steps or devices is not necessarily limited to those steps or devices clearly listed, but may include other steps or devices that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the first aspect, the present invention provides a structure for automated connection of the throat area of ​​a vehicle base, which includes a warehouse, a plurality of warehouse tracks are arranged inside the warehouse, and an initial track to be connected is arranged outside the warehouse, the initial track and the plurality of warehouse tracks are connected through a combination of track lines and switches, and the combination of track lines and switches forms a throat area.

[0051] As an optional implementation, in some embodiments, several warehouse tracks are parallel to each other.

[0052] As an optional implementation, in some embodiments, several warehouse tracks can be connected to one initial track or to several initial tracks at the same time.

[0053] Specifically, the warehouse is divided into upper and lower halves with the initial track as the boundary area and the initial connection is performed. Specifically, the initial track to be connected and the warehouse track are selected, the angle formed by the two is calculated, and according to the relationship between the angle and the turnout angle, the track line and the turnout are adjusted so that the angle between the initial track to be connected and the warehouse track is an integer multiple of the turnout angle, and whether the initial track to be connected and the warehouse track are in the same span is confirmed. In addition, the track line and the turnout must meet the relevant requirements for connection.

[0054] Furthermore, the upper half area is connected according to the angle and the line span, specifically in the following way: the warehouse tracks are formed into a track set, the main track is confirmed, the tracks in the switch group correspond to the warehouse tracks from top to bottom, the straight track multiple angles corresponding to the warehouse tracks are determined, the tracks to be connected are connected to the main track, based on the connection of the main track, other tracks are connected, the connected tracks are checked and judged, and new initial switch connections are made for the tracks that do not meet the requirements.

[0055] Furthermore, the lower half area is connected according to the angle and the line span. The specific method is the same as that of the upper half area, which will not be repeated here.

[0056] In a second aspect, the present invention provides a method for realizing automatic connection of the throat area of ​​a vehicle base, which comprises the following steps: acquiring parameter information of the throat area; obtaining initial track information and warehouse track information according to the parameter information of the throat area; and automatically connecting the initial track and the warehouse track according to the initial track information and the warehouse track information.

[0057] Step 1: Obtain parameter information of the throat area.

[0058] In this step, the throat area refers to the throat area in the vehicle base, which is the area that vehicles must pass through when entering and exiting the warehouse. Some relevant parameter information of the throat area is obtained through measurement, for example, such as the distance between adjacent parallel track lines, the distance between two adjacent switch centers, the minimum straight-line distance between the front and rear end points of the switch and the end points of the circular curve and the straight line segment, the minimum arc length of the circular curve, etc., so as to adjust its layout and obtain better vehicle passing capacity.

[0059] Step 2: Obtain the initial track information and warehouse track information based on the parameter information of the throat area.

[0060] In this step, by analyzing the parameter information of the throat area connecting the warehouse and the vehicle access route, the positional relationship between the corresponding warehouse track and the initial track is obtained, for example, such as the initial track positioning, warehouse track positioning, etc. The positioning of these tracks can be achieved through manual input positioning or reading related measurement data information.

[0061] Step 3: Automatically connect the initial track and the warehouse track according to the initial track information and the warehouse track information.

[0062] In this step, the warehouse is divided into upper and lower half areas with the initial track as the dividing area, and the other tracks of the warehouse are numbered in sequence from the middle to the two ends, and it is determined whether the warehouse track and the initial track are in the same line span. At the same time, the angle formed between the other tracks of the warehouse and the initial track is calculated, and it is determined whether the angle value is close to the multiple angle value. The initial track is automatically adjusted to the storage form corresponding to the multiple angle value, that is, the vehicle is stored in the form of a straight line or a multiple angle according to the angle between the warehouse track and the initial track.

[0063] Step 4: Connect the initial track to be connected with the warehouse track to be connected to obtain the initial branch center and straight line and curve information.

[0064] In this step, the length of the connected initial track and the warehouse track is calculated, and the total length of the throat area is calculated. For example, the measurement can be performed by a measuring device such as a laser rangefinder, a wheel rangefinder, or an online length measuring instrument. After the measurement, the data information of the branch center, straight line, and curve formed by the initial track and the warehouse track is obtained through mapping.

[0065] Step 5: Under the specified accuracy, adjust the positions of the switch center, straight line and curve. This scheme is defined as Scheme i.

[0066] In this step, the obtained data information of the branch center, straight line and curve is fine-tuned, and each adjustment is set as a plan and numbered.

[0067] Step 6: For scheme i, calculate the total corridor length min((∑Ci)+(∑Si)) and the throat area length min(L).

[0068] In this step, for each plan, the total branch length and throat area length of the adjusted branch center and straight line and curve data information are calculated and recorded for subsequent evaluation and screening.

[0069] Step 7: Use the objective function to evaluate, with the total track length and throat area length as the target while meeting the specifications.

[0070] In this step, the objective function is used for evaluation under the premise that the total length of the tract and the length of the throat area are the shortest. For example, a function for directly calculating the length is used, that is, the length of each part is added to obtain the total length; or a function for weighted length calculation is used, that is, in some cases, the length of different parts may have different importance. By assigning a weight coefficient to the length of each part, a weighted total length can be obtained.

[0071] Step 8: Repeat steps 5-7 until the calculation termination condition is met, that is, the convergence accuracy or the maximum number of iterations is reached.

[0072] In this step, the shortest throat area length is obtained through multiple dynamic adjustments and calculations.

[0073] In this embodiment, the present invention can make the connection of the throat area more intelligent.

[0074] As an optional implementation, in some embodiments, the step of obtaining parameter information of the throat area includes: obtaining switch information and track line information in the throat area; and obtaining parameter information of the throat area by restricting the switch information and track line information.

[0075] Specifically, the present invention can obtain the turnout information and track line information of the throat area, for example, the distance between the turnout centers of two adjacent turnouts, the minimum straight-line distance between the front and rear end points of the turnout and the end points of the circular curve and the straight line segment, etc. And according to the obtained turnout information, appropriate adjustments are made to simplify the turnout, so as to make the layout of the throat area more reasonable.

[0076] In this embodiment, the present invention can simplify the turnout arrangement.

[0077] As an optional implementation, in some embodiments, the step of obtaining the parameter information of the throat area by limiting the turnout information and the track line information includes: the type of turnout, the turnout center coordinates of the turnout, the turnout angle, the direction between the turnouts (left opening, right opening), the turnout azimuth (the direction angle of the turnout straight track), and the track line information is other information in the throat area except the turnout information, which includes straight line information and curve information, the straight line information includes the coordinates of the start and end points, and the curve information includes the actual distance length; wherein, the type of turnout is preset with the corresponding turnout number, and the corresponding turnout preset curve length, turnout preset straight line length, turnout preset distance length, and curve track preset distance length are generated according to the turnout number, and the following restriction conditions are met: the actual curve length of the track line is not less than the preset curve length of the track line; the actual straight line length of the track line is not less than the preset straight line length of the track line; the actual distance length between the turnouts is greater than the preset distance length between the turnouts; the actual distance length between the turnout and the end point of the curve track is greater than the preset distance length between the turnout and the curve track. The parameter information of the throat area is obtained according to the restriction conditions.

[0078] Specifically, the types of preset turnouts include single turnouts and symmetrical turnouts. Each turnout of each type is numbered and contains information about the length of the curve segment, the straight segment, and the length of the distance between the turnouts. Since the curve segment and straightness of the turnout jointly determine the running track and performance of the vehicle at the turnout, it is necessary to impose appropriate restrictions on it to obtain better results, while also making the layout of the throat area more reasonable.

[0079] See also Figure 2 and Figure 3 , standing in front of the point rail of the entire set of turnouts, facing the tail of the turnout, if you see the turnout bends to the left, it is a left-turning turnout, and if it bends to the right, it is a right-turning turnout. Among them, turnout a represents the front length of the turnout, that is, the distance from the start point of the turnout to the tip of the turnout; b represents the back length of the turnout, that is, the distance from the tip of the turnout to the end point of the turnout. a and b are constants corresponding to the turnout number. The frog angle α refers to the intersection angle of the two tracks on the turnout. tanα is the turnout number, such as 7, 9, 12, etc.

[0080] See also Figure 4 If two turnouts are connected by a straight track, the constraint should satisfy the track length L between the turnouts>Lmin, where Lmin is a constant corresponding to the turnout.

[0081] See also Figure 5 , the minimum distance M between the two ends of the turnout and the end of the flat curve, the constraint should satisfy the track length between the turnouts M≥Mmin, Mmin is a constant corresponding to the turnout. The length of the curve section should satisfy C≥Cmin, Cmin is a constant corresponding to the turnout.

[0082] See also Figure 6 , the straight line between two adjacent curves is the clamped straight line, and the clamped straight line should satisfy N≥Nmin, where Nmin is a constant corresponding to the train model.

[0083] The present invention can obtain the minimum curve segment length and the minimum straight segment length of the turnout, i.e., min((∑Ci)+(∑Si)), where Ci represents the length of each curve segment and Si represents the length of each straight segment. The minimum spacing between two turnouts, i.e., min(L), where L represents the length of the rail between the two turnouts can also be obtained. In this way, the overall length of the throat area can be minimized.

[0084] As an optional implementation, in certain embodiments, the step of obtaining initial track information and warehouse track information based on parameter information of the throat area includes: identifying initial track positioning information and warehouse track positioning information based on the parameter information of the throat area; selecting the warehouse track and the initial track to be connected based on the initial track positioning information and the warehouse track positioning information, and generating corresponding initial track information and warehouse track information based on the warehouse track and the initial track to be connected.

[0085] Specifically, after mechanical measurement, the position information of the initial track and the position information of the warehouse track can be read in the computer, and the warehouse track in the warehouse can be matched and connected with the initial track to be connected, thereby generating corresponding initial track information and warehouse track information, so as to realize the automatic connection between the initial track and the warehouse track.

[0086] As an optional implementation, in some embodiments, the step after automatically connecting the initial track and the warehouse track according to the initial track information and the warehouse track information also includes: connecting the initial track to be connected and the warehouse track to be connected to obtain the initial branch center and straight line and curve information; adjusting the positions of the branch center, straight line and curve under the specified accuracy, and this scheme is defined as scheme i; for scheme i, calculating the total track length min((∑Ci)+(∑Si)) and the throat area length min(L); evaluating with the objective function, taking the total track length and the throat area length as the target under the condition of meeting the specifications; repeating steps 5-7 until the calculation termination condition is met, that is, the convergence accuracy or the maximum number of iterations has been reached.

[0087] Specifically, see Figure 7 , calculate the length of the initial track and the warehouse track that have been connected, and calculate the total length of the throat area. For example, the measurement can be performed by measuring equipment such as a laser rangefinder, a wheel rangefinder, or an online length measuring instrument. And, under the condition of specified accuracy, adjust the parameters such as the fork center, straight line, and curve position of the initial track and the warehouse track that have been connected. The specific adjustment has been discussed in the above embodiment and will not be repeated here. And, define the adjusted plan as plan i, then the total length of the initial track and the warehouse track is min((∑Ci)+(∑Si)) and the length of the throat area is min(L). In this way, the objective function is used to continuously and dynamically adjust the parameters to obtain the plan with the shortest total length of the initial track and the warehouse track and the shortest length of the throat area.

[0088] In this embodiment, the present invention can dynamically adjust the values ​​of the initial track and the warehouse track parameters to meet the requirement of the shortest overall length of the throat area.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0090] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for automatic connection of the throat area of ​​a vehicle base, characterized in that: It includes: A warehouse has several warehouse tracks inside and an initial track to be connected outside. The initial track is connected to several warehouse tracks through a combination of track lines and switches, and the combination of track lines and switches forms a throat area.

2. The structure for automatic connection of the vehicle base throat area according to claim 1, characterized in that: The plurality of warehouse corridors are parallel to each other.

3. The structure for automatic connection of the vehicle base throat area according to claim 1, characterized in that: Several of the warehouse tracks can be connected to one of the initial tracks or can be connected to several of the initial tracks at the same time.

4. A method for realizing automatic connection of the throat area of ​​a vehicle base, characterized in that: The structure for automatic connection of the throat area of ​​the vehicle base according to any one of claims 1 to 3 comprises the following steps: Get parameter information of throat area; Obtaining initial track information and warehouse track information according to the parameter information of the throat area; The initial track and the warehouse track are automatically connected according to the initial track information and the warehouse track information.

5. The method for realizing automatic connection of the throat area of ​​the vehicle base according to claim 4 is characterized in that: The step of obtaining parameter information of the throat area comprises: Obtain turnout information and track line information in the throat area; The parameter information of the throat area is obtained by performing restrictions according to the turnout information and the track line information.

6. The method for realizing automatic connection of the vehicle base throat area according to claim 5, characterized in that: The step of obtaining parameter information of the throat area by limiting according to the turnout information and track line information comprises: The turnout information includes the type of turnout, the turnout center coordinates, the turnout angle, the direction between the turnsouts, and the azimuth of the turnout; The track line information is other information in the throat area except the turnout information, which includes straight line information and curve information. The straight line information includes the coordinates of the starting and ending points, and the curve information includes the actual distance length; The type of the turnout is preset with a corresponding turnout number, and the corresponding preset curve length of the turnout, the preset straight length of the turnout, the preset distance length between the turnouts, and the preset distance length of the curved track are generated according to the turnout number, and the following restrictions are met: The actual curve length of the track line is not less than the preset curve length of the track line; The actual straight length of the track line is not less than the preset straight length of the track line; The actual distance between the switches is greater than the preset distance between the switches; The actual distance between the turnout and the end point of the curved track is greater than the preset distance between the turnout and the curved track; Parameter information of the throat region is obtained according to the restriction condition.

7. The method for realizing automatic connection of the throat area of ​​the vehicle base according to claim 4, characterized in that: The step of obtaining the initial track information and the warehouse track information according to the parameter information of the throat area comprises: Identify initial track location information and warehouse track location information according to the parameter information of the throat area; A warehouse track and an initial track to be connected are selected according to the initial track positioning information and the warehouse track positioning information, and corresponding initial track information and warehouse track information are generated according to the warehouse track and the initial track to be connected.

8. The method for realizing automatic connection of the throat area of ​​the vehicle base according to claim 4, characterized in that: The step of automatically connecting the initial track and the warehouse track according to the initial track information and the warehouse track information further includes: Calculate the initial track and warehouse track in the connected throat area to obtain the total track length of the initial track and warehouse track and the total length of the throat area; According to the total track length of the initial track and the warehouse track and the total length of the throat area, the parameters of the connected initial track and the warehouse track are adjusted, and the total track length of the adjusted initial track and the warehouse track and the total length of the throat area are calculated; Repeat the above adjustment until the shortest total length of the initial track and the warehouse track and the total length of the throat area are obtained.

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