CN114454921B - Vehicle set speed regulation control method and system based on hump four-position speed reducer - Google Patents
Vehicle set speed regulation control method and system based on hump four-position speed reducer Download PDFInfo
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Abstract
The invention discloses a vehicle group speed regulation control method and system based on a hump four-position speed reducer, wherein the method comprises the following steps: when the current train set enters a three-position reducer section, judging the position and the running state of the previous train set; selecting a corresponding calculation formula according to the position and the running state of the previous train set, and calculating the constant speed of the three-part speed reducer on the current train set; the current train set drives away from the three-part reducer section at a constant speed and continues to drive; when the detection equipment of the detection equipment arranged in the three-position length measuring section detects that the train set passes through, the running speed of the train set is measured, and the speed regulation control is performed on the train set through the four-position speed reducer according to the measured running speed of the train set, wherein the four-position speed reducer is arranged in the three-position length measuring section and is positioned on one side, far away from the three-position speed reducer, of the detection equipment. The invention can greatly improve the constant speed of the three-part speed reducer, improve the operation efficiency of humps and effectively solve the problem of empty vehicle coupling rate.
Description
Technical Field
The invention belongs to the field of rail hump speed reducers, and particularly relates to a vehicle set speed regulation control method and system based on four hump speed reducers.
Background
The hump of marshalling station is a small hill built on the ground and shaped like a camel peak back, and is designed into a proper slope, on which the railway is laid, and the potential energy produced by utilizing gravity of vehicle and slope of hump is used as auxiliary locomotive thrust to break up train. When the hump shunting operation is carried out, the shunting machine pushes the train to the hump, when the foremost train set approaches the hump top, the train hook is lifted, and at the moment, the train can automatically slide down the slope to a preset line of a grouping yard by utilizing the gravity of the train, so that the shunting operation efficiency can be greatly improved. In the process that the train set slides by depending on the gravity of the train set, in order to ensure the requirements of safety and operation, a speed regulating device must be arranged at a certain place, and the sliding speed of the train set is regulated according to the requirement so as to meet the operation requirement. When the train set enters the speed regulating device, the speed regulating device can do work on the train set just after the train set enters, so that the speed of the train set is reduced to meet the requirement of operation. The speed regulation mode can be divided into a continuous mode, a point-connected mode and the like.
The point-connected speed regulating system is usually connected with a section of target area at the outlet of the three-position speed reducer, and no retarder equipment is arranged in the target area.
Simple and easy reduction gear for example TJDY type electricity liquid reduction gear need not lay the wind pipeline, installs on the rail of current concrete sleeper, has independent hydraulic pressure station, can the speed of accurate control car group.
In the prior art, the point-connected hump is a shunting hump which is provided with a point type speed regulating device at a hump sliding part and a shunting line inlet and is provided with a continuous type speed regulating device at the back of a target hitting area. The point-connected speed regulating system mainly consists of a speed reducer and a continuous speed regulating device (a speed reducer top).
The speed regulation mode of most humps in China adopts point-connected speed regulation, wherein the point-connected speed regulation is that a speed regulation device (speed reducer equipment) is arranged at a hump sliding part and a shunting line inlet, a continuous speed regulation device (speed reducer top) is arranged in a station track of a shunting yard, and the speed reducer arranged at the shunting line inlet is commonly called three parts. Fig. 1 shows a layout of a three-site point-connected apparatus, which includes: three-position speed reducer, three-position speed reducer section, three-position length measurement, three-position radar, three-position axle counting and speed reducing jack.
Theoretically, the arrangement number of the retarder in the shunting yard station track is determined according to the running resistance of heavy vehicles and the gradient of the station track, for easy-to-drive vehicles (heavy vehicles), the arrangement number of the retarder ensures that the easy-to-drive vehicles (heavy vehicles) do not accelerate within the gradient range, but the arrangement number of the retarder determines that the running speed of the difficult-to-drive vehicles (empty vehicles) in the shunting yard track is reduced very fast, so that a large number of empty vehicles cannot be safely connected with the front vehicles.
At present, the speed regulation mode of a few humps in China adopts the speed regulation by adding a four-position speed reducer, and the tail end of a target shooting section is provided with a speed regulation device (speed reducer equipment), so that the running distance of an empty vehicle can be effectively increased. The layout of the four-point-connected equipment is shown in fig. 2, the existing four-point-connected four-point speed reducer equipment is consistent with the three-point equipment, and the three-point-connected four-point equipment comprises: the system comprises a three-position speed reducer, a three-position speed reducer section, a three-position length measuring device, a three-position radar, a three-position axle counting device, a four-position speed reducer section, a four-position length measuring device, a four-position radar, a four-position axle counting device and a speed reducing top.
The pneumatic speed reducer installed at the four parts also needs to lay the wind pipelines at the positions where the four parts are installed, and the speed reducer installation needs an integral ballast bed. Although the four-position reducer can improve the working efficiency of the hump, as the equipment of the four-position reducer is the same as that of the three-position reducer, a large number of cables need to be laid, and an air pipeline needs to be laid at the installation position of the four positions, and the four positions are far away from the three positions, so that a large amount of construction workload is caused.
Disclosure of Invention
Aiming at the problems, the technical scheme adopted by the invention is as follows: a vehicle set speed regulation control method based on a hump four-position speed reducer comprises the following steps:
when the current train set enters a three-position reducer section, judging the position and the running state of the previous train set;
selecting a corresponding calculation formula according to the position and the running state of the previous train set, and calculating the constant speed of the three-part speed reducer on the current train set;
the current train set drives away from the three-part reducer section at a constant speed and continues to drive;
when the detection equipment of the detection equipment arranged in the three-position length measuring section detects that the train set passes through, the running speed of the train set is measured, and the speed regulation control is performed on the train set through the four-position speed reducer according to the measured running speed of the train set, wherein the four-position speed reducer is arranged in the three-position length measuring section and is positioned on one side, far away from the three-position speed reducer, of the detection equipment.
Optionally, in selecting a corresponding calculation formula according to the position and the operating state of the previous vehicle group, the method includes the following steps:
judging whether the previous vehicle set is between the three-position speed reducer and the four-position speed reducer;
if the previous vehicle group is between the three-position speed reducer and the four-position speed reducer, selecting a corresponding calculation formula according to whether the previous vehicle group stops running or not;
and if the front train set is not between the three-position speed reducer and the four-position speed reducer, selecting a corresponding calculation formula according to whether the free length between the four-position speed reducer and the front train set is enough to accommodate the current train set.
Alternatively, if the previous train set is between the three-position speed reducer and the four-position speed reducer and stops running, the corresponding calculation formula is:
wherein, the first and the second end of the pipe are connected with each other,
V stator : setting the speed of a three-position speed reducer of the current train set;
V hanging rack : a target coupling speed;
L air conditioner : the idle length behind the three-position speed reducer is the position of the three-position speed reducer to the parking vehicle;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
Alternatively, if the previous train set is between the three-position speed reducer and the four-position speed reducer and does not stop running, the corresponding calculation formula is:
wherein the content of the first and second substances,
L the first left : the distance from the tail of the previous vehicle set to the four-part speed reducer;
V front side : the current speed value of the previous vehicle group;
V four leading points : the speed of the four-position speed reducer of the previous vehicle set is fixed;
l: the distance between the three-position speed reducer and the four-position speed reducer;
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V four in : the predicted inlet speeds of the four-position speed reducers of the current train set;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the train set;
i: the track slope.
Optionally, if the previous train set is not located between the three-position speed reducer and the four-position speed reducer, and the free length between the four-position speed reducer and the previous train set is sufficient to accommodate the current train set, the corresponding calculation formula is:
wherein the content of the first and second substances,
V stator : setting the speed of a three-position speed reducer of the current train set;
V fourthly : the maximum allowable inlet speeds of the four-position speed reducer and the maximum allowable inlet speeds of different weight class car groups are different;
l: the distance between the three-position speed reducer and the four-position speed reducer;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the train set;
i: the track slope.
Optionally, if the previous train set is not located between the three-position speed reducer and the four-position speed reducer, and the free length between the four-position speed reducer and the previous train set is not enough to accommodate the current train set, the corresponding calculation formula is:
wherein the content of the first and second substances,
V stator : setting the speed of a three-position speed reducer of the current train set;
V hanging hook : a target coupling speed;
g: gravity acceleration taking into account the moment of inertia;
H j : the braking energy of the speed reducer is high;
L air conditioner : the idle length behind the four-part speed reducer is the position from the four-part speed reducer to the parking vehicle;
c: the ratio of the average weight of the train set to the set weight;
L vehicle with a detachable front cover : total length of the consist;
V four allowance : four-position retarder allowed inlet speed.
Optionally, in the step of determining whether the previous vehicle group is between the three-position speed reducer and the four-position speed reducer, the method includes:
after the train set enters the three-position speed reducer section, if the train set does not reach the four-position speed reducer within set time, judging that the train set stays between the three-position speed reducer and the four-position speed reducer; or
And if the three-position length measuring section judges that the previous vehicle set stops running, calculating the length between the position where the previous vehicle set stops and the three-position speed reducer, and judging that the vehicle set stops between the three-position speed reducer and the four-position speed reducer if the length between the position where the previous vehicle set stops and the three-position speed reducer is smaller than the distance between the three-position speed reducer and the four-position speed reducer.
Optionally, the control method further comprises the steps of:
recording the number of vehicles entering each train set of the three-position reducer section;
when the detection equipment detects that the number of passing vehicles reaches the number of vehicles of the corresponding vehicle group, the speed value integral of the vehicle group is used for judging whether the tail part of the vehicle group leaves the four-position speed reducer or not, and when the tail part of the vehicle group leaves the four-position speed reducer, the detection equipment is closed and the control of the four-position speed reducer on the vehicle group is stopped.
And, a group of cars speed governing control system based on four position reducers of hump, control system includes:
the three-position speed reducer is provided with three-position speed reducer sections and is used for fixing the speed of the train set entering the three-position speed reducer sections;
the judging unit is used for judging the position and the running state of the previous train set when the current train set enters the three-position reducer section;
the calculating unit is used for selecting a corresponding calculating formula according to the position and the running state of the previous train set and calculating the constant speed of the three-part speed reducer on the current train set;
the detection equipment is arranged in the three-position length measuring section and is used for identifying and measuring the speed of the vehicle group passing through the detection equipment;
and the four-part speed reducer is arranged in the three-part length measuring section and is positioned on one side of the detection equipment, which is far away from the three-part speed reducer, and is used for carrying out speed regulation control on the train set passing through the four-part speed reducer according to the measured running speed of the train set.
Optionally, when the determining unit determines the position and the operating state of the previous vehicle group, the determining unit includes:
judging whether the previous vehicle set is between the three-position speed reducer and the four-position speed reducer;
if the previous vehicle set is between the three-position speed reducer and the four-position speed reducer, judging whether the previous vehicle set stops running or not;
and if the previous vehicle group is not between the three-position speed reducer and the four-position speed reducer, judging whether the free length between the four-position speed reducer and the previous vehicle group is enough to accommodate the current vehicle group.
Optionally, if the previous train set is between the three-position speed reducer and the four-position speed reducer and stops running, the calculation unit selects the corresponding calculation formula as follows:
wherein, the first and the second end of the pipe are connected with each other,
V stator : setting the speed of a three-position speed reducer of the current train set;
V hanging rack : a target coupling speed;
L air conditioner : the idle length behind the three-position speed reducer is the position of the three-position speed reducer to the parking vehicle;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
Optionally, if the previous train set is between the three-position speed reducer and the four-position speed reducer and does not stop running, the calculation unit selects a corresponding calculation formula as follows:
wherein, the first and the second end of the pipe are connected with each other,
L the first left : the distance from the tail of the previous vehicle set to the four-part speed reducer;
V front side : the current speed value of the previous vehicle group;
V four leading points : the speed of the four-position speed reducer of the previous vehicle set is fixed;
l: the distance between the three-position speed reducer and the four-position speed reducer;
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V four in : the predicted inlet speeds of the four-position speed reducers of the current train set;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
Optionally, if the previous train set is not located between the three-position speed reducer and the four-position speed reducer, and the free length between the four-position speed reducer and the previous train set is sufficient to accommodate the current train set, the calculating unit selects a corresponding calculation formula as:
wherein the content of the first and second substances,
V stator : setting the speed of a three-position speed reducer of the current train set;
V fourthly : the maximum allowable inlet speeds of the four-position speed reducer and the maximum allowable inlet speeds of different weight class car groups are different;
l: the distance between the three-position speed reducer and the four-position speed reducer;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the train set;
i: the track slope.
Optionally, if the previous train set is not located between the three-position speed reducer and the four-position speed reducer, and the free length between the four-position speed reducer and the previous train set is not enough to accommodate the current train set, the calculating unit selects a corresponding calculation formula as:
wherein, the first and the second end of the pipe are connected with each other,
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V hanging rack : a target coupling speed;
g: gravity acceleration taking into account moment of inertia;
H j : the braking energy of the speed reducer is high;
L air conditioner : the idle length behind the four-position speed reducer is the position of the four-position speed reducer to the parking vehicle;
c: the ratio of the average weight of the train set to the set weight;
L vehicle with wheels : the total length of the consist;
V four permission : four-position reducer allowed inlet speed.
Optionally, the detection device comprises a vehicle identification device and a radar;
when the detection equipment identifies and tests the speed, the method specifically comprises the following steps: when the vehicle identification device judges that a vehicle group passes through, a radar test is started, and the running speed of the vehicle group is measured.
Optionally, the control system further comprises a recording unit for recording the number of vehicles entering each consist of the three-site retarder section;
when the detection equipment detects that the number of passing vehicles reaches the number of vehicles of the vehicle group, the speed value integral of the vehicle group is used for judging whether the tail part of the vehicle group leaves the four-position speed reducer or not, and when the tail part of the vehicle group leaves the four-position speed reducer, the detection equipment is closed and the control of the four-position speed reducer on the vehicle group is stopped.
Due to the adoption of the technical scheme, the invention has the following beneficial effects: when no stop vehicle group is arranged between the three-position speed reducer and the four-position speed reducer, the constant speed of the three-position speed reducer can be greatly improved, the operation efficiency of a hump is improved, and the problem of empty vehicle coupling rate can be effectively solved. And the newly-added four-part speed reducer is not provided with a track section, four-part length measuring equipment is not required to be added, the existing three-part length measuring is not damaged, the existing point-connected longitudinal section is not required to be adjusted, and an air pipeline and an integral track bed are not required to be laid.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a layout of a three-position reducer point-coupled plant according to the prior art;
FIG. 2 shows a four-site retarder spot-on plant layout according to the prior art;
FIG. 3 illustrates a four-site retarder point-coupled apparatus layout according to an embodiment of the present invention;
FIG. 4 illustrates a schematic diagram of a three and four position retarder without a consist between them and with a free length in front of the four position retarder sufficient to accommodate the current consist, according to an embodiment of the invention;
FIG. 5 is a schematic diagram illustrating no consist between three and four site retarders and insufficient free length in front of the four site retarder to accommodate the current consist according to an embodiment of the present invention;
FIG. 6 illustrates a schematic diagram of a consist between three and four site retarders with the consist out of service according to an embodiment of the present invention;
FIG. 7 illustrates a schematic diagram of a consist between three and four site retarders with the consist not out of service according to an embodiment of the present invention;
FIG. 8 illustrates a schematic diagram of a current consist jacking into a previous consist not out of service in accordance with an embodiment of the present invention;
FIG. 9 shows a layout of a detection apparatus according to an embodiment of the invention;
FIG. 10 illustrates a flow chart for calculating the constant speed of a three-position retarder according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The hump four-position speed reducer-based train group speed regulation control system disclosed by the embodiment of the invention is a four-position speed reducer point-connection type equipment layout diagram shown in fig. 3, and comprises a three-position speed reducer, a four-position speed reducer and a retarder top which are sequentially arranged along a station track of a shunting yard, wherein the three-position speed reducer is provided with a three-position speed reducer section and a three-position length measuring section, and the four-position speed reducer is arranged in the three-position length measuring section. The device also comprises detection equipment, wherein the detection equipment comprises vehicle identification equipment and a radar, as shown in a layout diagram of the detection equipment in fig. 9, and the radar and the vehicle identification equipment are sequentially arranged in a three-position length measuring section from a three-position speed reducer to a four-position speed reducer.
The three-position speed reducer is used for fixing the speed of a train set entering a section of the three-position speed reducer; the four-position speed reducer is used for carrying out speed regulation control on the train set passing through the four-position speed reducer according to the measured running speed of the train set; the detection equipment is used for identifying and measuring the speed of the train set passing through the detection equipment.
The control system further comprises: the judging unit is used for judging the position and the running state of the previous train set when the current train set enters the three-position reducer section; and the calculating unit is used for selecting a corresponding calculating formula according to the position and the running state of the previous train set and calculating the constant speed of the three-position speed reducer on the current train set.
In the system, on the basis of the existing point-connection type speed regulation, the effective length of a length measuring section of a three-position speed reducer is not changed, and a simple speed reducer (namely a four-position speed reducer in the invention), a speed measuring radar and vehicle identification equipment are arranged at the tail end of a target shooting section in the length measuring section. Compared with the existing four-position speed regulation mode, the simple speed reducer does not need to lay an air pipeline and an integral ballast bed, the four-position speed reducer is not provided with a track section, the existing four-position mode is simple in construction, and the transformation of an existing station is also more convenient. In addition, after the four-part speed reducer is additionally arranged, the point-connected longitudinal section does not need to be adjusted, partial speed reducers in the station track of the shunting yard can be removed, the resistance of the speed reducers to empty vehicles is reduced, the running distance of the empty vehicles is increased, and the hitching rate of the empty vehicles is further increased (in the embodiment, a vehicle group consists of one or more train carriages, the vehicle group slides into the track of the hump yard along a steel rail by means of the gravity of the vehicle group after the vehicle group is unhooked from the crest of the hump, the vehicle group is hitched with the previous vehicle group at a speed lower than 5km/h, which is called as a safety hitch, the vehicle group which is not hitched with the previous vehicle or hitched with the speed higher than 5km/h is not in a safety hitching range, and the proportion of the number of the vehicle groups which are safely hitched to the total number of test vehicles is called as a safety hitch rate).
The control device of the four-site decelerator, which communicates with the indoor device using wireless or 5G technology, may be installed near the four-site decelerator to reduce the data amount of the cable. In some other embodiments, the four-position speed reducer mounting of the present invention may mount a five-position speed reducer a distance behind the four-position.
In combination with the vehicle group speed regulation control system based on the hump four-part speed reducer, the invention further provides a vehicle group speed regulation control method based on the hump four-part speed reducer, which comprises the following steps:
s1: when the current train set enters a three-position reducer section, the judging unit judges the position and the running state of the previous train set;
s2: selecting a corresponding calculation formula according to the position and the running state of the previous train set, and calculating the constant speed of the current train set by the three-position speed reducer by the calculation unit;
s3: the current train set drives away from the three-part reducer section at a constant speed and continues to drive;
s4: and when the detection equipment detects that the train set passes by, measuring the running speed of the train set, and carrying out speed regulation control on the train set through the four-position speed reducer according to the measured running speed of the train set.
In step S4, the vehicle enters the four-part speed reducer and is judged by means of vehicle identification equipment arranged in front of the speed reducer, when the vehicle identification equipment judges that a vehicle group passes through, a radar test is started, the running speed of the vehicle group is measured, and the four-part speed reducer is started to carry out speed regulation control on the vehicle group according to the current running speed.
In step S1, the following steps are included in determining the position and the operating state of the preceding vehicle group, in conjunction with the three-position speed reducer constant speed calculation flowchart shown in fig. 10:
s11: judging whether the previous vehicle set is between the three-position speed reducer and the four-position speed reducer;
in this step, the determination is made in two ways: one is that the time when the current train set enters the three-position speed reducer is recorded, and after the train set enters the three-position speed reducer section, if the train set does not reach the four-position speed reducer within a set time (generally, the distance between the three-position speed reducer and the four-position speed reducer is divided by the lowest speed at which the train set runs), the train set is judged to stay between the three-position speed reducer and the four-position speed reducer; and if the three-position length measuring section judges that the previous vehicle set stops running, the length from the position where the previous vehicle set stops to the three-position speed reducer is calculated, and the length from the position where the previous vehicle set stops to the three-position speed reducer is smaller than the distance between the three-position speed reducer and the four-position speed reducer, the vehicle set is judged to stop between the three-position speed reducer and the four-position speed reducer. The results judged by the two methods are adopted, namely, if one of the two methods is judged to be between the three-position speed reducer and the four-position speed reducer, the result is judged that the front vehicle set stays between the three-position speed reducer and the four-position speed reducer.
(1) If the previous vehicle group is between the three-position speed reducer and the four-position speed reducer, executing step S12;
(2) If the previous vehicle group is not between the three-position speed reducer and the four-position speed reducer, executing a step S13;
s12: judging whether the previous vehicle set stops running or not;
in the step, whether the previous vehicle set stops running or not is judged through the three-position length measuring section.
(1) If the operation is stopped, measuring the speed value of the front train set by using a three-position length measuring section, performing target shooting by using a three-position speed reducer according to the position of the front train set to calculate the constant speed, selecting formula 1 to calculate the constant speed of the three-position speed reducer on the current train set, and as shown in a schematic diagram of fig. 6, when the train set is arranged between the three-position speed reducer and the four-position speed reducer, and the train set stops operating:
wherein, the first and the second end of the pipe are connected with each other,
V stator : the speed (m/s) of a three-position speed reducer of the current train set is fixed;
V hanging rack : target coupling speed (m/s);
L air conditioner : the idle length behind the three-position speed reducer is the position (m) from the three-position speed reducer to the parking vehicle;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance (kg/t) of the vehicle is distinguished according to the weight grade of the train set;
i: track slope (‰).
(2) If the operation is not stopped, for example, as shown in the schematic diagram of fig. 7 where there is a train set between the three-position and four-position speed reducers and the train set is not stopped, the time from the current position of the previous train set to the time when the previous train set leaves the four-position speed reducer is calculated, and the current train set just runs to the four-position speed reducer according to the calculated time to calculate the constant speed of the three speed reducers, then equation 2 is selected to calculate the constant speed of the three-position speed reducer for the current train set:
wherein, the first and the second end of the pipe are connected with each other,
L the first left : the distance (m) from the tail of the previous vehicle set to the four-position speed reducer;
V front side : the current speed value (m/s) of the previous vehicle group;
V first four is decided : the constant speed (m/s) of the four-position speed reducer of the front vehicle group;
l: the distance (m) between the three-position speed reducer and the four-position speed reducer;
V stator : the speed (m/s) of a three-position speed reducer of the current train set is fixed;
V four in : predicted inlet speeds (m/s) of the four-position retarder of the current consist;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance (kg/t) of the vehicle is distinguished according to the weight grade of the train set;
i: track slope (‰).
When the three-position speed reducer performs speed setting on the current train set by using the speed setting value calculated by the formula 2, as shown in fig. 8, the current train set (i.e., the current train set in the figure) is pushed into the previous train set which is not stopped, and the current train set drives away from the three-position speed reducer section by using the speed setting value and safely bumps into the previous train set.
S13: judging whether the free length between the four-part speed reducer and the previous vehicle set is enough to accommodate the current vehicle set;
in the step, the three-position length measuring section can calculate the position of the stopping train set, the position of the four-position speed reducer is subtracted from the position of the stopping train set, the distance between the stopping train set and the four-position speed reducer can be calculated, and the distance between the stopping train set and the four-position speed reducer and the length of the current train set are compared, so that whether the stopping train set is enough to accommodate the current train set or not is known.
(1) If the current train set is enough to be accommodated, such as the schematic diagram shown in FIG. 4 in which no train set exists between the three-position and four-position speed reducers and the free length in front of the four-position speed reducer is enough to accommodate the current train set, a common train set is selected
And 3, calculating the constant speed of the three-position speed reducer to the current train set:
wherein the content of the first and second substances,
V stator : the constant speed (m/s) of a three-position speed reducer of the current train set;
V fourthly : the maximum entrance speeds allowed by the four-position speed reducer and the maximum entrance speeds allowed by different weight class train sets are different (m/s);
l: the distance (m) between the three-position speed reducer and the four-position speed reducer;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance (kg/t) of the vehicle is distinguished according to the weight grade of the train set;
i: track slope (mill).
(2) If the current train set is not enough to be accommodated, selecting a formula 4 to calculate the constant speed of the three-position speed reducer to the current train set, so that the speed of the four-position speed reducer, which enables the train set to be in linkage with the front train set, is reduced to the safe linkage speed, as shown in a schematic diagram of fig. 5, in which no train set exists between the three-position speed reducer and the four-position speed reducer, and the free length in front of the four-position speed reducer is not enough to accommodate the current train set, the train set leaves the three-position speed reducer in the shortest time, and reaches the four-position speed reducer at the fastest speed allowed by the four-position speed reducer, so that the safe linkage is realized:
wherein the content of the first and second substances,
V stator : the constant speed (m/s) of a three-position speed reducer of the current train set;
V hanging hook : target coupling speed (m/s);
g: gravity acceleration taking into account moment of inertia;
H j : the braking energy of the speed reducer is high;
L air conditioner : the idle length behind the four-position speed reducer is the position (m) from the four-position speed reducer to the parking vehicle;
c: the ratio of the average weight of the train set to the set weight; the high value of the energy of the speed reducer is a numerical value calculated according to the vehicle with set weight, and the braking capacity of the speed reducer on the vehicle can be determined only after the vehicles with different weights are compared with the set weight. In the present embodiment, 80t is selected as the set weight value.
L Vehicle with wheels : total length of the consist (m);
V four allowance : inlet speed allowed by the four-position reducer (m/s).
Through the steps, after the four-position speed reducer is installed, when the train set does not stay between the three-position speed reducer and the four-position speed reducer, the constant speed of the three-position speed reducer can be improved, the time of the hook train occupying the section of the three-position speed reducer is reduced, the hump disintegration efficiency is improved, and the train set connection rate is increased.
Furthermore, the train set speed regulation control system also comprises a recording unit for recording the number of vehicles of each train set entering the three-position reducer section; correspondingly, the control method further comprises the following steps:
s21: recording the number of vehicles of each train set entering a three-position speed reducer section;
s22: when the vehicle identification device in the detection device detects that the number of passing vehicles reaches the number of vehicles of the corresponding vehicle group, the integral of the speed values of the vehicle group is used for judging whether the tail part of the vehicle group leaves the four-position speed reducer or not, and when the tail part of the vehicle group leaves, the detection device is closed and the control of the four-position speed reducer on the vehicle group is stopped.
In step S22, the radar measures a speed value V of the train set, calculates a length lr of the train set entering the four-site retarder by using a formula 5, and determines that the tail of the train set leaves the four-site retarder when the lr is greater than the length of the train set.
lr = Vdt formula 5
Wherein, lr: the length of the train set entering the four-part speed reducer; v: the current speed of the consist.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. A vehicle group speed regulation control method based on a hump four-position speed reducer is characterized by comprising the following steps:
when the current train set enters a three-position reducer section, judging the position and the running state of the previous train set;
selecting a corresponding calculation formula according to the position and the running state of the previous train set, and calculating the constant speed of the three-part speed reducer on the current train set;
the current train set drives away from the three-part reducer section at a constant speed and continues to drive;
when the detection equipment of the detection equipment arranged in the three-position length measuring section detects that a vehicle group passes through, measuring the running speed of the vehicle group, and carrying out speed regulation control on the vehicle group through the four-position speed reducer according to the measured running speed of the vehicle group, wherein the four-position speed reducer is arranged in the three-position length measuring section and is positioned on one side of the detection equipment, which is far away from the three-position speed reducer;
in selecting a corresponding calculation formula according to the position and the running state of the previous vehicle group, the method comprises the following steps:
judging whether the previous vehicle set is between the three-position speed reducer and the four-position speed reducer;
if the previous vehicle group is between the three-position speed reducer and the four-position speed reducer, selecting a corresponding calculation formula according to whether the previous vehicle group stops running or not;
if the front train set is not between the three-position speed reducer and the four-position speed reducer, selecting a corresponding calculation formula according to whether the free length between the four-position speed reducer and the front train set is enough to accommodate the current train set;
the step of judging whether the previous vehicle group is between the three-position speed reducer and the four-position speed reducer comprises the following steps:
after the train set enters the three-position speed reducer section, if the train set does not reach the four-position speed reducer within set time, judging that the train set stays between the three-position speed reducer and the four-position speed reducer; or
And if the three-position length measuring section judges that the previous vehicle set stops running, calculating the length between the position where the previous vehicle set stops and the three-position speed reducer, and judging that the vehicle set stops between the three-position speed reducer and the four-position speed reducer if the length between the position where the previous vehicle set stops and the three-position speed reducer is smaller than the distance between the three-position speed reducer and the four-position speed reducer.
2. The method for controlling the speed of a train set based on a hump four-position speed reducer as claimed in claim 1, wherein if the previous train set is between the three-position speed reducer and the four-position speed reducer and stops running, the corresponding calculation formula is:
wherein the content of the first and second substances,
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V hanging rack : a target coupling speed;
L air conditioner : rear of three-position speed reducerThe idle length of the three-position speed reducer is equal to the position of the parking vehicle;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
3. The method for controlling the speed of a train set based on a hump four-position speed reducer as claimed in claim 1, wherein if the previous train set is between the three-position speed reducer and the four-position speed reducer and does not stop running, the corresponding calculation formula is:
wherein the content of the first and second substances,
L the first left : the distance from the tail of the previous vehicle set to the four-part speed reducer;
V front side : the current speed value of the previous vehicle group;
V first four is decided : the speed of the four-position speed reducer of the previous vehicle set is fixed;
l: the distance between the three-position speed reducer and the four-position speed reducer;
V stator : setting the speed of a three-position speed reducer of the current train set;
V four in : the predicted inlet speeds of the four-position speed reducers of the current train set;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
4. The method as claimed in claim 1, wherein if the previous train set is not located between the three-position retarder and the four-position retarder and the spare length between the four-position retarder and the previous train set is sufficient to accommodate the current train set, the corresponding calculation formula is:
wherein the content of the first and second substances,
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V fourthly, the method : the maximum entrance speeds allowed by the four-position speed reducer are different from the maximum entrance speeds allowed by different weight grade train sets;
l: the distance between the three-position speed reducer and the four-position speed reducer;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
5. The method as claimed in claim 1, wherein if the previous train set is not located between the three-position retarder and the four-position retarder and the spare length between the four-position retarder and the previous train set is not long enough to accommodate the current train set, the corresponding calculation formula is:
wherein, the first and the second end of the pipe are connected with each other,
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V hanging rack : a target coupling speed;
g: gravity acceleration taking into account moment of inertia;
H j : the braking energy of the speed reducer is high;
L air conditioner : the idle length behind the four-position speed reducer is the position of the four-position speed reducer to the parking vehicle;
c: the ratio of the average weight of the train set to the set weight;
L vehicle with a detachable front cover : the total length of the consist;
V four allowance : four-position reducer allowed inlet speed.
6. The vehicle group speed regulation control method based on the hump four-position speed reducer as claimed in any one of claim 1, characterized in that the control method further comprises the following steps:
recording the number of vehicles of each train set entering a three-position speed reducer section;
when the detection equipment detects that the number of passing vehicles reaches the number of vehicles of the corresponding vehicle group, the speed value integral of the vehicle group is used for judging whether the tail of the vehicle group leaves the four-position speed reducer or not, and when the tail of the vehicle group leaves the four-position speed reducer, the detection equipment is closed and the control of the four-position speed reducer on the vehicle group is stopped.
7. The utility model provides a set of group's speed governing control system based on four position reducers on hump which characterized in that, control system includes:
the three-position speed reducer is provided with three-position speed reducer sections and is used for fixing the speed of the train set entering the three-position speed reducer sections;
the judging unit is used for judging the position and the running state of the previous train set when the current train set enters the three-position reducer section;
when the judging unit judges the position and the running state of the previous vehicle set, the judging unit comprises the following steps:
judging whether the previous vehicle set is between the three-position speed reducer and the four-position speed reducer;
if the previous vehicle set is between the three-position speed reducer and the four-position speed reducer, judging whether the previous vehicle set stops running or not;
if the previous vehicle group is not between the three-position speed reducer and the four-position speed reducer, judging whether the free length between the four-position speed reducer and the previous vehicle group is enough to accommodate the current vehicle group;
after the train set enters the three-position speed reducer section, if the train set does not reach the four-position speed reducer within set time, judging that the train set stays between the three-position speed reducer and the four-position speed reducer; or
If the three-position length measuring section judges that the previous vehicle set stops running, the length from the position where the previous vehicle set stays to the three-position speed reducer is calculated, and the length from the position where the previous vehicle set stays to the three-position speed reducer is smaller than the distance between the three-position speed reducer and the four-position speed reducer, the vehicle set is judged to stay between the three-position speed reducer and the four-position speed reducer;
the calculating unit is used for selecting a corresponding calculating formula according to the position and the running state of the previous train set and calculating the constant speed of the three-part speed reducer on the current train set;
the detection equipment is arranged in the three-position length measuring section and is used for identifying and measuring the speed of the train set passing through the detection equipment;
and the four-part speed reducer is arranged in the three-part length measuring section and is positioned on one side of the detection equipment, which is far away from the three-part speed reducer, and is used for carrying out speed regulation control on the train set passing through the four-part speed reducer according to the measured running speed of the train set.
8. The system of claim 7, wherein if the previous consist is between the three-site retarder and the four-site retarder and stops running, the calculation unit selects the corresponding calculation formula as:
wherein, the first and the second end of the pipe are connected with each other,
V stator : the speed of a three-position speed reducer of the current train set is fixed;
V hanging rack : a target coupling speed;
L air conditioner : the idle length behind the three-position speed reducer is the position of the three-position speed reducer to the parking vehicle;
g: gravity acceleration taking into account the moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the train set;
i: the track slope.
9. The system of claim 7, wherein if the previous vehicle group is between the three-position retarder and the four-position retarder and is not stopped, the calculating unit selects the corresponding calculation formula as:
wherein the content of the first and second substances,
L the first left : the distance from the tail of the front vehicle set to the four-position speed reducer;
V front side : the current speed value of the previous vehicle group;
V four leading points : the speed of the four-position speed reducer of the previous vehicle set is fixed;
l: the distance between the three-position speed reducer and the four-position speed reducer;
V stator : setting the speed of a three-position speed reducer of the current train set;
V four in : the predicted inlet speed of the four-position speed reducer of the current train set;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the train set;
i: the track slope.
10. The system of claim 7, wherein if the previous train set is not between the three-site retarder and the four-site retarder and the free length between the four-site retarder and the previous train set is sufficient to accommodate the current train set, the calculating unit selects the corresponding calculation formula as:
wherein the content of the first and second substances,
V stator : setting the speed of a three-position speed reducer of the current train set;
V fourthly : the maximum entrance speeds allowed by the four-position speed reducer are different from the maximum entrance speeds allowed by different weight grade train sets;
l: the distance between the three-position speed reducer and the four-position speed reducer;
g: gravity acceleration taking into account moment of inertia;
W 0 : the basic resistance of the vehicle is distinguished according to the weight grade of the vehicle group;
i: the track slope.
11. The system of claim 7, wherein if the previous train set is not between the three-position retarder and the four-position retarder and the free length between the four-position retarder and the previous train set is not enough to accommodate the current train set, the calculating unit selects the corresponding calculation formula as:
wherein the content of the first and second substances,
V stator : setting the speed of a three-position speed reducer of the current train set;
V hanging rack : a target coupling speed;
g: gravity acceleration taking into account moment of inertia;
H j : the braking energy of the speed reducer is high;
L air conditioner : the idle length behind the four-position speed reducer is the position of the four-position speed reducer to the parking vehicle;
c: the ratio of the average weight of the train set to the set weight;
L vehicle with wheels : the total length of the consist;
V four allowance : four-position reducer allowed inlet speed.
12. The vehicle consist speed regulation control system based on a hump four-site speed reducer according to any one of claims 7 to 11, wherein the detection equipment comprises vehicle identification equipment and a radar;
when the detection equipment is used for identifying and measuring speed, the method specifically comprises the following steps: when the vehicle identification equipment judges that a vehicle group passes through, a radar test is started, and the running speed of the vehicle group is measured.
13. A consist speed control system based on a hump four-site retarder according to any of claims 7 to 11, characterized in that said control system further comprises a recording unit for recording the number of vehicles entering each consist of three-site retarder sections;
when the detection equipment detects that the number of passing vehicles reaches the number of vehicles of the vehicle group, the speed value integral of the vehicle group is used for judging whether the tail part of the vehicle group leaves the four-position speed reducer or not, and when the tail part of the vehicle group leaves the four-position speed reducer, the detection equipment is closed and the control of the four-position speed reducer on the vehicle group is stopped.
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| CN2059638U (en) * | 1989-02-27 | 1990-07-25 | 铁道部科学研究院通信信号研究所 | Electronic brain length measurer for hump grouping yard |
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| CN112046553A (en) * | 2020-09-22 | 2020-12-08 | 北京全路通信信号研究设计院集团有限公司 | Method and system for controlling brake of speed reducer |
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