CN115723577A - High-speed pantograph active control sensor mounting structure and control method - Google Patents
High-speed pantograph active control sensor mounting structure and control method Download PDFInfo
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Abstract
The invention discloses an active control sensor mounting structure and a control method, wherein the sensor mounting structure comprises a sliding plate connecting rod, an acceleration sensor, a pressure sensor, an upper sleeve, an upper elastic element, a lower sleeve, a lower elastic element, a bearing assembly and a limiting cylinder; through designing hollow column type structure and integrating contact force sensor and acceleration sensor and bow suspension structure, under the assurance bow elasticity suspension system normal function prerequisite, effectively fix the sensor structure, the sensor circuit carries out built-in design, passes through optic fibre transmission to signal processor with bow net dynamic contact force and the acceleration signal that contact force sensor and acceleration sensor gathered, realizes the implementation regulation of high-speed train operation in-process bow net dynamic contact force. The integrated sensor design structure can improve the signal acquisition quality, provides accurate and effective input for a control part, and effectively ensures the pantograph-catenary current collection performance in the vehicle operation process.
Description
Technical Field
The present invention relates to a high-speed pantograph active control sensor, and more particularly, to a high-speed pantograph active control sensor mounting structure and a control method.
Background
In the running process of the high-speed motor train unit, the dynamic contact force of the pantograph-catenary is affected and aggravated by external environments such as aerodynamic force, running resistance and the like, and the problems that the current collection of a vehicle is unstable, the traction force is lost or a contact net is damaged due to overhigh contact force and the like caused by insufficient dynamic contact force of the pantograph-catenary are easily caused.
In the prior art, the traditional bow net dynamic contact force and acceleration sensor mounting structure is generally as follows: the sensor is additionally arranged outside the bow head suspension.
The prior art has the following disadvantages:
complicated modification work is required in the aspects of sensor installation and wiring;
the problem that the high-speed motor train unit cannot acquire dynamic contact force of a pantograph-catenary and open-loop control adjustment of acceleration in real time is solved, and the requirements on the current collection stability and the operation safety of a pantograph of the high-speed motor train unit are difficult to meet.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a high-speed pantograph active control sensor mounting structure and a control method, which aim to solve the technical problems in the prior art.
The purpose of the invention is realized by the following technical scheme:
the invention discloses a high-speed pantograph active control sensor mounting structure, which is integrated on a pantograph head and comprises a sliding plate connecting rod 1, an acceleration sensor 2, a pressure sensor 3, an upper sleeve 4, an upper elastic element 5, a lower sleeve 6, a lower elastic element 7 and a bearing assembly 8; a limiting cylinder 9;
the carbon pantograph slider mounting structure is characterized in that the sliding plate connecting rod 1 is of a columnar structure, the upper part of the sliding plate connecting rod 1 is provided with a connecting frame 11 and is provided with a mounting hole for being connected with a pantograph carbon sliding plate mounting interface, the lower part of the sliding plate connecting rod 1 is provided with a guide post 15, the upper part of the guide post 15 is provided with a limiting ring 13, the limiting ring 13 is matched with a through hole in the top of the upper sleeve 4, the upper part of the limiting ring 13 is provided with an acceleration sensor wire outlet 14 for an acceleration sensor cable 21 to enter a guide post hollow hole 16, the bottom of the guide post 15 is provided with a limiting end cover 17 for limiting the lower elastic element 7, and the middle part of the limiting end cover 17 is provided with a through hole for the acceleration sensor cable 21 to pass through;
the acceleration sensor 2 is of a cylindrical hollow structure, is positioned at the lower part of the connecting frame 11, is embedded into the annular positioning groove II 41 at the top of the upper sleeve 4, and the inner side of the acceleration sensor 2 is connected with an acceleration sensor cable 21;
the pressure sensor 3 is of a cylindrical hollow structure and is located at the top of the inner side of the upper sleeve 4, a threaded hole 31 used for being connected with the connecting frame 11 is formed in the top of the pressure sensor 3, the connecting frame 11 penetrates through a through hole in the top of the upper sleeve 4 through a fastener 12 to be connected with the threaded hole 31 of the pressure sensor 3, a pressure sensor cable 33 is led out from the side portion of the pressure sensor 3, the pressure sensor cable 33 penetrates out through a second outlet hole 42 in the side face of the upper sleeve 4, the pressure sensor cable 33 is fixed through a cable connector 43 and is sealed with the second outlet hole 42, and a first annular positioning groove 32 used for positioning the upper elastic element 5 is formed in the bottom of the pressure sensor 3.
The high-speed pantograph active control method of the high-speed pantograph active control sensor mounting structure comprises the following steps:
acquiring a current bow net initial static contact force of the motor train unit according to the pressure sensor to obtain a static contact force value;
resetting the static contact force through a valve plate pneumatic adjusting unit according to the current static contact force value;
acquiring the current running speed of the train set to obtain a corresponding bow net dynamic force interval value;
acquiring a contact force value of the pressure sensor to obtain a dynamic contact force value of the bow net;
judging whether the pantograph-catenary dynamic force contact value exceeds a dynamic contact force interval value or not according to the pantograph-catenary dynamic contact force value to obtain a first judgment result;
when the first judgment result shows that the actually measured bow net dynamic contact force pressure value exceeds the dynamic contact force interval value of the corresponding speed grade, automatically adjusting the air supply pressure of the valve plate according to the judgment result until the pressure value of the pressure sensor falls into the dynamic contact force interval under the corresponding speed condition;
and when the first judgment result shows that the actually measured bow net dynamic contact force pressure value accords with the dynamic contact force interval value of the corresponding speed grade, maintaining the air supply pressure of the valve plate.
Compared with the prior art, the high-speed pantograph active control sensor mounting structure and the control method thereof transmit the pantograph dynamic contact force and the acceleration signal acquired by the active control sensor mounting structure to the signal processor, the signal processor transmits the processed signal to the pantograph valve plate air pressure adjusting device, and the valve plate air pressure adjusting device adjusts the pantograph air bag pressure so as to realize the real-time monitoring and adjustment of the pantograph dynamic contact force in the running process of a high-speed train. The integrated sensor design structure can improve the signal acquisition quality, provides more accurate input for a control part, and can effectively improve the pantograph-catenary current collection performance in the running process of the high-speed motor train unit by utilizing the monitoring and adjusting method of the pantograph-catenary dynamic contact force. The problem of the open-loop control of the dynamic contact force of the pantograph-catenary and the acceleration of the existing high-speed motor train unit which cannot be acquired in real time is solved, and the requirements of the pantograph current collection stability and the operation safety of the high-speed motor train unit are met.
Drawings
FIG. 1 is a schematic diagram of an installation location of a high speed pantograph active control sensor according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a high-speed pantograph active control sensor mounting structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an active control principle of a high-speed pantograph according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an interaction principle of a high-speed pantograph active control system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an active control method of a high-speed pantograph according to an embodiment of the present invention.
In the figure:
1. a slide plate connecting rod; 2. an acceleration sensor; 3. a pressure sensor; 4. an upper sleeve; 5. an upper elastic member; 6. a lower sleeve; 7. a lower elastic element; 8. a bearing assembly; 9. a limiting cylinder; 11. a connecting frame; 12. a fastener; 13. a limiting ring; 14. a first wire outlet hole; 15. a guide post; 16. a guide post hollow hole; 17. a limiting end cover; 21. an acceleration sensor cable; 31. a threaded hole; 32. a first annular positioning groove; 33. a pressure sensor cable; 41. a second annular positioning groove; 42. a second wire outlet hole; 43. a cable joint is provided. 61. A third annular positioning groove; 81. stopping the bearing; 82. a bearing lower stop; 91. a fastening table; 92. and a third wire outlet hole.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below by combining the attached drawings in the embodiment of the invention; it is to be understood that the described embodiments are merely exemplary of the invention, and are not intended to limit the invention to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The terms that may be used herein are first described as follows:
the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".
The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.
The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.
Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.
The invention discloses a high-speed pantograph active control sensor mounting structure, which is integrated on a pantograph head and comprises a sliding plate connecting rod 1, an acceleration sensor 2, a pressure sensor 3, an upper sleeve 4, an upper elastic element 5, a lower sleeve 6, a lower elastic element 7 and a bearing assembly 8; a limiting cylinder 9;
the carbon pantograph slider mounting structure is characterized in that the sliding plate connecting rod 1 is of a columnar structure, the upper part of the sliding plate connecting rod 1 is provided with a connecting frame 11 and is provided with a mounting hole for being connected with a pantograph carbon sliding plate mounting interface, the lower part of the sliding plate connecting rod 1 is provided with a guide post 15, the upper part of the guide post 15 is provided with a limiting ring 13, the limiting ring 13 is matched with a through hole in the top of the upper sleeve 4, the upper part of the limiting ring 13 is provided with an acceleration sensor wire outlet 14 for an acceleration sensor cable 21 to enter a guide post hollow hole 16, the bottom of the guide post 15 is provided with a limiting end cover 17 for limiting the lower elastic element 7, and the middle part of the limiting end cover 17 is provided with a through hole for the acceleration sensor cable 21 to pass through;
the acceleration sensor 2 is of a cylindrical hollow structure, is positioned at the lower part of the connecting frame 11, is embedded into a second annular positioning groove 41 at the top of the upper sleeve 4, and the inner side of the acceleration sensor 2 is connected with an acceleration sensor cable 21;
the pressure sensor 3 is of a cylindrical hollow structure and is located at the top of the inner side of the upper sleeve 4, a threaded hole 31 used for being connected with the connecting frame 11 is formed in the top of the pressure sensor 3, the connecting frame 11 penetrates through a through hole in the top of the upper sleeve 4 through a fastener 12 to be connected with the threaded hole 31 of the pressure sensor 3, a pressure sensor cable 33 is led out from the side portion of the pressure sensor 3, the pressure sensor cable 33 penetrates out through a second outlet hole 42 in the side face of the upper sleeve 4, the pressure sensor cable 33 is fixed through a cable connector 43 and is sealed with the second outlet hole 42, and a first annular positioning groove 32 used for positioning the upper elastic element 5 is formed in the bottom of the pressure sensor 3.
The upper sleeve 4 is of a hollow columnar structure, a through hole is formed in the center of the top of the upper sleeve 4 and used for being matched with the limiting ring 13 on the sliding plate connecting rod 1 to be installed, an annular positioning groove II 41 used for limiting the acceleration sensor 2 is formed in the top of the upper sleeve, and a wire outlet hole II 42 used for allowing the pressure sensor cable 33 to pass through is formed in the side portion of the upper sleeve 4;
the upper elastic element 5 is of a column structure, the top of the upper elastic element 5 is installed in a matching mode with the first annular positioning groove 33 in the bottom of the pressure sensor 3, and the bottom of the upper elastic element 5 is embedded into the third annular positioning groove 61 in the top of the lower sleeve 6;
the lower sleeve 6 is of a cylindrical hollow structure, the upper part of the lower sleeve 6 is provided with a third annular positioning groove 61 for positioning and mounting the upper elastic element 5, and the lower part of the lower sleeve 6 is connected with a limiting cylinder 9;
the lower elastic element 7 is of a column structure, the top of the lower elastic element 7 is in contact with the bottom of the bearing lower stop block 82, the bottom of the lower elastic element 7 is in contact with the top of the limiting end cover 17, and the lower elastic element 7 is used for elastic limiting when the guide rod moves upwards;
the bearing assembly 8 is positioned in the hollow part of the lower sleeve 6, the top of the bearing assembly 8 is limited by a bearing upper stop 81, and the bottom of the bearing assembly 8 is limited by a bearing lower stop 82;
the limiting cylinder 9 is of a column type hollow structure, the upper part of the limiting cylinder 9 is connected with the lower part of the lower sleeve 6, so that the lower elastic element 7 and the guide column 15 are protected, a fastening table 91 for installing the limiting cylinder is arranged in the middle of the limiting cylinder 9, and a third wire outlet 92 for allowing the acceleration sensor cable 21 to pass through is arranged at the bottom of the limiting cylinder 9;
the sliding plate connecting rod 1 is of an integral structure, and the outer edge of the cross section of the upper sleeve 4 is of an elliptic column structure.
The high-speed pantograph active control method of the high-speed pantograph active control sensor mounting structure comprises the following steps:
acquiring a current bow net initial static contact force of the motor train unit according to the pressure sensor to obtain a static contact force value;
resetting the static contact force through a valve plate pneumatic adjusting unit according to the current static contact force value;
acquiring the current running speed of the train set to obtain a corresponding dynamic force interval value of the pantograph-catenary;
acquiring a contact force value of the pressure sensor to obtain a dynamic contact force value of the bow net;
judging whether the pantograph-catenary dynamic force contact value exceeds a dynamic contact force interval value or not according to the pantograph-catenary dynamic contact force value to obtain a first judgment result;
when the first judgment result shows that the actually measured bow net dynamic contact force pressure value exceeds the dynamic contact force interval value of the corresponding speed grade, automatically adjusting the air supply pressure of the valve plate according to the judgment result until the pressure value of the pressure sensor falls into the dynamic contact force interval under the corresponding speed condition;
and when the first judgment result shows that the actually measured bow net dynamic contact force pressure value accords with the dynamic contact force interval value of the corresponding speed grade, maintaining the air supply pressure of the valve plate.
The dynamic contact force and the acceleration signal of the pantograph-catenary are obtained by a pressure sensor and an acceleration sensor which are integrated in the mounting structure of the pantograph-overhead sensor.
The kilometer post mark unit corresponds overrun kilometer post according to current bow net acceleration value mark, specifically includes:
the method comprises the steps that a kilometer post signal of the motor train unit is obtained through a vehicle communication system, an acceleration signal is obtained through a pantograph-catenary acceleration sensor, the actually-measured pantograph-catenary dynamic acceleration of the motor train unit is compared with a set standard acceleration value, and when the actually-measured pantograph-catenary dynamic acceleration value of the motor train unit exceeds a standard value required value, a corresponding operating kilometer post range is marked and output.
The contact force adjusting unit adjusts the dynamic bow net force in real time according to the current bow net contact force value, and the method specifically comprises the following steps:
acquiring a running speed signal of the motor train unit by a vehicle communication system, acquiring a dynamic contact force signal by a pantograph-catenary contact force sensor, and comparing the actually measured pantograph-catenary dynamic contact force of the motor train unit with pantograph-catenary dynamic contact force interval values corresponding to different set speed levels;
when the actual measurement bow net dynamic contact force value of the motor train unit exceeds the standard value requirement value, the air supply pressure value of the pantograph valve plate is adjusted, and the specific adjusting method comprises the following steps: when the actually measured bow net dynamic contact force value is larger than the upper limit of the bow net dynamic contact force interval corresponding to the speed level, reducing the air supply pressure, setting the initial value of the reduction of the air supply pressure, and when the first step-down is checked to be invalid, carrying out step-down control by carrying out step-down control on secondary and subsequent step-down for multiple times in an initial value index increasing mode until the actually measured bow net dynamic contact force value falls into the bow net dynamic contact force interval corresponding to the speed level;
when the actual measurement bow net dynamic contact force value is smaller than the lower limit of the corresponding bow net dynamic contact force interval under the speed level, the air supply pressure is increased, the initial value of the air supply pressure increase is set, when the primary pressurization is checked to be invalid, the secondary and subsequent multiple pressurization adopt the initial value index increasing mode to carry out pressurization control until the actual measurement bow net dynamic contact force value falls into the corresponding bow net dynamic contact force interval under the speed level.
In summary, according to the installation structure and the control method of the high-speed pantograph active control sensor of the embodiment of the invention, the pantograph-catenary contact force and acceleration sensor and the pantograph-head elastic suspension structure are integrally designed, the hollow column type sensor structure is adopted to be matched with the pantograph-head elastic suspension system, the installation structure of the sensor is greatly simplified, the sensor cable is used as a wiring path through the upper sleeve and the hollow guide rod in the installation structure of the sensor, and the complicated fixing form of sensor circuit laying and the damage to the cable connection part caused by the impact of external environment foreign matters in the vehicle running process are effectively avoided.
The sensor mounting structure is integrally designed with a contact force sensor, an acceleration sensor and a bow hanging structure by designing the hollow column type sensor mounting structure, the sensor structure is effectively fixed on the premise of ensuring the normal function of the bow elastic hanging system, the sensor circuit is designed in a built-in mode, the sensor mounting reliability is further improved, and the problem that a movable part is hung to lay a circuit is solved. The pantograph-catenary dynamic contact force and the acceleration signals collected by the contact force sensor and the acceleration sensor are transmitted to the signal processor through the optical fibers, the pressure of a pantograph air bag is adjusted in real time by utilizing a set control strategy through the pantograph valve plate air pressure adjusting device after the signals are processed, the implementation and adjustment of the pantograph-catenary dynamic contact force in the running process of a high-speed train are realized, the signal collection quality can be improved by the aid of the integrated sensor design structure, accurate and effective input is provided for a control part, and the pantograph-catenary current collection performance in the running process of the train is effectively guaranteed.
The invention collects dynamic contact force and acceleration signal of pantograph and catenary in real time, feeds back the signal processing to the pantograph valve plate air pressure control device, adjusts the pantograph air bag pressure in real time, realizes the closed-loop control of dynamic signal receiving, processing and feedback, ensures that the dynamic contact force of pantograph and catenary is in a set safety range in the running process of a vehicle, effectively ensures the current collection quality, simultaneously collects and screens through the acceleration signal and corresponds to the running kilometer post of a motor train unit, can effectively collect line running data, can effectively obtain the pantograph and catenary dynamic data of a new line before the newly-established high-speed rail line is opened for operation, and is beneficial to the adjustment of line parameters and the optimization of pantograph control strategy.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the upper part of the sensor mounting structure of the present embodiment is fixedly connected to the carbon slide plate, and the lower part of the sensor mounting structure is fixed by the bow support plate.
As shown in fig. 2, the high-speed pantograph active control sensor mounting structure of the present embodiment includes a slider connecting rod 1; an acceleration sensor 2; a pressure sensor 3; an upper sleeve 4; an upper elastic member 5; a lower sleeve 6; a lower elastic element 7; a bearing assembly 8; a limiting cylinder 9.
The upper connecting frame 11 of the connecting rod of the sliding plate 1 is used for being connected with a carbon sliding plate, the lower part of the connecting rod of the sliding plate is a hollow guide post 15, the hollow inner part of the hollow inner part can be used for laying a sensor cable, the acceleration sensor 2 is positioned below the connecting frame 11 and at the top of the upper sleeve 4, the annular positioning groove II 41 at the top of the upper sleeve 4 is used for positioning and installing, the pressure sensor 3 is positioned at the top of the inner side of the upper sleeve 4, the connecting frame 11 penetrates through a through hole at the top of the upper sleeve 4 through a fastener 12 to be connected with a threaded hole 31 of the pressure sensor 3, the lower part of the pressure sensor 3 is contacted with the upper elastic element 5, during the running process of the motor train unit, the pantograph carbon sliding and the contact line below the connecting frame 11 move vertically along with the carbon sliding plate, the acceleration sensor of the carbon sliding plate is sensed, when the pantograph works, the pressure sensor 3 positioned in the upper sleeve 4 drives the connecting rod 1 and the upper sleeve 4 to compress the upper elastic element 5 downwards along the carbon sliding plate under the action of the carbon sliding plate and the dynamic contact force, because the lower sleeve 6 is fixedly connected with the pantograph supporting plate, the hollow sleeve bearing assembly 15, the hollow sleeve assembly 15 can compress the upper elastic element of the carbon sliding plate and feed back the pressure sensor between the upper elastic element 5 of the guide post through the dynamic contact line.
As shown in fig. 3 and 4, when the motor train unit operates and works, a pantograph head carbon slide plate and a contact net move in a dynamic contact manner, a pressure sensor and an acceleration sensor in a pantograph head sensor mounting structure transmit signals to a signal processor of a pantograph bottom frame, the signal processor transmits the signals to an in-vehicle integrated processor, the integrated processor interacts with vehicle network data, decision and control are performed on pressure regulation of a control valve plate, then the pressure of a pantograph air bag is regulated in real time according to a regulation strategy, and the contact force is transmitted to the contact force between the pantograph head carbon slide plate and the contact net, so that a closed-loop sensing and regulating active control system is formed.
As shown in fig. 5, the specific control method is as follows: the dynamic contact force and the acceleration signal of the pantograph-catenary are obtained by a pressure sensor and an acceleration sensor which are integrated in the mounting structure of the pantograph-overhead sensor. Acquiring a current bow net initial static contact force 100 of the motor train unit according to the pressure sensor to obtain a static contact force value; and resetting the static contact force 200 through a valve plate pneumatic adjusting unit according to the current value of the static contact force. The contact force adjusting unit 400 is used for acquiring the current running speed 300 of the train set by the integrated processor to obtain a pantograph-catenary dynamic force interval value 401; acquiring a contact force value 402 of the pressure sensor to obtain a dynamic contact force value of the pantograph-catenary; judging whether the pantograph-catenary dynamic force contact value exceeds a dynamic contact force interval value 403 according to the pantograph-catenary dynamic contact force value to obtain a first judgment result; when the first judgment result shows that the actually measured bow net dynamic contact force pressure value exceeds the dynamic contact force interval value of the corresponding speed grade, automatically adjusting 404 the air supply pressure of the valve plate according to the judgment result until the pressure value of the pressure sensor falls into the dynamic contact force interval under the corresponding speed condition; and when the first judgment result shows that the actually measured bow net dynamic contact force pressure value accords with the dynamic contact force interval value of the corresponding speed grade, maintaining the air supply pressure 405 of the valve plate. The kilometer sign marking unit 500 is used for acquiring a kilometer sign signal of the motor train unit from a vehicle communication system through the integrated processor, acquiring an acceleration signal through the pantograph-catenary acceleration sensor, comparing an actual measurement pantograph-catenary dynamic acceleration value of the motor train unit with a set standard acceleration value, and recording and marking a corresponding operation kilometer sign range 504 when the actual measurement pantograph-catenary dynamic acceleration value of the motor train unit exceeds the standard value requirement value, wherein the actual measurement pantograph-catenary dynamic acceleration value can be used as a reference basis for contact network interval detection and adjustment. When the measured bow net dynamic acceleration value of the motor train unit is within the standard value requirement, the measured bow net dynamic acceleration value is recorded only, and the measured bow net dynamic acceleration value can be used for contact net interval state reference and comparison. The integrated processor collects and stores 600 the acceleration and contact force of the pantograph head sensor, and can call the stored data through the external terminal, and analyze and diagnose the line information and the working state of the pantograph.
The specific way of adjusting the air supply pressure value 404 when the pressure sensor value exceeds the dynamic contact force interval value 403 by the contact force adjusting unit 400 is as follows: acquiring a running speed signal of the motor train unit by a vehicle communication system, acquiring a dynamic contact force signal by a pantograph-catenary contact force sensor, and comparing the actually-measured pantograph-catenary dynamic contact force of the motor train unit with the set pantograph-catenary dynamic contact force interval values corresponding to different speed levels; when the actual measurement bow net dynamic contact force value of the motor train unit exceeds the standard value requirement value, the air supply pressure value of the pantograph valve plate is adjusted, and the specific adjusting method comprises the following steps: when actual measurement bow net dynamic contact force numerical value is greater than the bow net dynamic contact force interval upper limit that corresponds under this speed level, reduce the air supply pressure, set for air supply pressure reduction initial numerical value, when the decompression is invalid once in the inspection, the secondary and follow-up a lot of steps down and take initial numerical value index to increase progressively the mode and carry out the step-down control, until actual measurement bow net dynamic contact force numerical value falls into the bow net dynamic contact force interval that corresponds under this speed level. When the actual measurement bow net dynamic contact force value is smaller than the lower limit of the corresponding bow net dynamic contact force interval under the speed level, the air supply pressure is increased, the initial value of the air supply pressure increase is set, when the primary pressurization is checked to be invalid, the secondary and subsequent multiple pressurization adopt the initial value index increasing mode to carry out pressurization control until the actual measurement bow net dynamic contact force value falls into the corresponding bow net dynamic contact force interval under the speed level.
The technical scheme of the invention has the following beneficial effects:
the pantograph-catenary dynamic contact force monitoring and adjusting method has the advantages that real-time monitoring and adjusting of the pantograph-catenary dynamic contact force in the running process of the high-speed train are achieved, the integrated sensor design structure can improve signal acquisition quality, more accurate input is provided for a control part, and the pantograph-catenary current collection performance in the running process of the high-speed motor train unit can be effectively improved by the aid of the pantograph-catenary dynamic contact force monitoring and adjusting method.
Through the real-time collection bow net dynamic contact force and acceleration signal, feed back signal processing to pantograph valve plate pneumatic control device, adjust pantograph gasbag pressure in real time, realize the closed loop control of dynamic signal reception, processing, feedback, guarantee bow net dynamic contact force is in the safety range of settlement in the vehicle operation process, effectively guarantee the collection flow quality.
The acceleration signal is collected, screened and corresponds to the kilometer post of the running of the motor train unit, so that the running data of the line can be effectively collected, particularly, the dynamic data of the pantograph-catenary of a new line can be effectively obtained before the newly-established high-speed rail line is opened for running, and the optimization of line parameter adjustment and pantograph control strategies is facilitated.
Bow net contact pressure and acceleration sensor carry out integrated design with bow elasticity suspension, adopt hollow cylindricality sensor structure and bow elasticity suspension to match, very big simplification sensor mounting structure, the sensor cable passes through last sleeve and hollow guide bar among the sensor mounting structure and is regarded as walking the line route, effectively avoids the loaded down with trivial details fixed form that the sensor circuit laid and vehicle operation in-process because the damage that the cable connection position caused is hit to the hitting of external environment foreign matter.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. A high-speed pantograph active control sensor mounting structure is integrated on a pantograph head and is characterized by comprising a sliding plate connecting rod (1), an acceleration sensor (2), a pressure sensor (3), an upper sleeve (4), an upper elastic element (5), a lower sleeve (6), a lower elastic element (7), a bearing assembly (8) and a limiting cylinder (9);
the carbon pantograph slider is characterized in that the sliding plate connecting rod (1) is of a columnar structure, the upper portion of the sliding plate connecting rod (1) is provided with a connecting frame (11) and is provided with a mounting hole for being connected with a pantograph carbon sliding plate mounting interface, the lower portion of the sliding plate connecting rod (1) is provided with a guide post (15), the upper portion of the guide post (15) is provided with a limiting ring (13), the limiting ring (13) is matched with a through hole in the top of the upper sleeve (4), the upper portion of the limiting ring (13) is provided with an acceleration sensor wire outlet hole (14) for enabling an acceleration sensor cable (21) to enter a guide post hollow hole (16), the bottom of the guide post (15) is provided with a limiting end cover (17) for limiting a lower elastic element (7), and the middle of the limiting end cover (17) is provided with a through hole for enabling the acceleration sensor cable (21) to pass through;
the acceleration sensor (2) is of a cylindrical hollow structure, is positioned at the lower part of the connecting frame (11), is embedded into a second annular positioning groove (41) at the top of the upper sleeve (4), and the inner side of the acceleration sensor (2) is connected with an acceleration sensor cable (21);
pressure sensor (3) are cylindrical hollow structure, be located upper sleeve (4) inboard top, pressure sensor (3) top is equipped with screw hole (31) that are used for being connected with link (11), pass upper sleeve (4) top through-hole through fastener (12) with link (11) and be connected with screw hole (31) of pressure sensor (3), pressure sensor cable (33) are drawn forth to pressure sensor (3) lateral part, pressure sensor cable (33) are worn out through upper sleeve (4) side wire-out hole two (42), use cable joint (43) fixed pressure sensor cable (33) and seal wire-out hole two (42), annular constant head tank (32) that pressure sensor (3) bottom was used for going up elastic element (5) and fix a position.
2. The high-speed pantograph active control sensor mounting structure according to claim 1, wherein the upper sleeve (4) is a hollow cylindrical structure, a through hole is formed in the center of the top of the upper sleeve (4) for being matched with a limiting ring (13) on the sliding plate connecting rod (1) for mounting, a second annular positioning groove (41) for limiting the acceleration sensor (2) is formed in the top of the upper sleeve, and a second outlet hole (42) for allowing a pressure sensor cable (33) to pass through is formed in the side of the upper sleeve (4);
the upper elastic element (5) is of a column structure, the top of the upper elastic element (5) is installed in a matching mode with the first annular positioning groove (32) in the bottom of the pressure sensor (3), and the bottom of the upper elastic element (5) is embedded into the third annular positioning groove (61) in the top of the lower sleeve (6).
3. The high-speed pantograph active control sensor mounting structure according to claim 2, wherein the lower sleeve (6) is a cylindrical hollow structure, the upper part of the lower sleeve (6) is provided with a third annular positioning groove (61) for positioning and mounting the upper elastic element (5), and the lower part of the lower sleeve (6) is connected with the limiting cylinder (9);
the lower elastic element (7) is of a column structure, the top of the lower elastic element (7) is in contact with the bottom of the lower bearing stop (82), the bottom of the lower elastic element (7) is in contact with the top of the limiting end cover (17), and the lower elastic element (7) is used for elastic limiting when the guide rod moves upwards.
4. High speed pantograph active control sensor mounting structure according to claim 3, characterized in that said bearing assembly (8) is located in the lower sleeve (6) hollow, the bearing assembly (8) top is limited with a bearing upper stop (81) and the bearing assembly (8) bottom is limited with a bearing lower stop (82).
5. The high-speed pantograph active control sensor mounting structure according to claim 4, wherein the limiting cylinder (9) is a column type hollow structure, the upper part of the limiting cylinder (9) is connected with the lower part of the lower sleeve (6) so as to protect the lower elastic element (7) and the guide post 15, the middle part of the limiting cylinder (9) is provided with a fastening table (91) for mounting the limiting cylinder, and the bottom of the limiting cylinder (9) is provided with a third outlet hole (92) for passing the acceleration sensor cable (21).
6. A high speed pantograph active control sensor mounting structure according to claim 5, wherein said skateboard connection rod (1) is of unitary construction, the outer edge of the cross section of said upper sleeve (4) being of an elliptic cylindrical configuration.
7. A high-speed pantograph active control method equipped with the high-speed pantograph active control sensor mounting structure according to any one of claims 1 to 6, comprising:
acquiring a current bow net initial static contact force of the motor train unit according to the pressure sensor to obtain a static contact force value;
resetting the static contact force through a valve plate pneumatic adjusting unit according to the current value of the static contact force;
acquiring the current running speed of the train set to obtain a corresponding bow net dynamic force interval value;
acquiring a contact force value of the pressure sensor to obtain a dynamic contact force value of the bow net;
judging whether the pantograph-catenary dynamic force contact value exceeds a dynamic contact force interval value or not according to the pantograph-catenary dynamic contact force value to obtain a first judgment result;
when the first judgment result shows that the actually measured bow net dynamic contact force pressure value exceeds the dynamic contact force interval value of the corresponding speed grade, automatically adjusting the air supply pressure of the valve plate according to the judgment result until the pressure value of the pressure sensor falls into the dynamic contact force interval under the corresponding speed condition;
and when the first judgment result shows that the actually measured bow net dynamic contact force pressure value accords with the dynamic contact force interval value of the corresponding speed grade, maintaining the air supply pressure of the valve plate.
8. The active control method of a high speed pantograph according to claim 7, wherein said pantograph dynamic contact force and acceleration signal are obtained by a pressure sensor and an acceleration sensor integrated in a pantograph head sensor mounting structure.
9. The active control method of a high-speed pantograph according to claim 8, wherein the kilometer sign marking unit marks the corresponding overrun kilometer sign according to the current pantograph acceleration value, and specifically comprises:
obtaining a kilometer sign signal of the motor train unit by a vehicle communication system, obtaining an acceleration signal by a pantograph-catenary acceleration sensor, comparing the actually measured pantograph-catenary dynamic acceleration of the motor train unit with a set standard acceleration value, and marking and outputting a corresponding operating kilometer sign range when the actually measured pantograph-catenary dynamic acceleration value of the motor train unit exceeds a standard value requirement value.
10. The active control method of a high-speed pantograph according to claim 9, wherein the contact force adjusting unit adjusts the pantograph dynamic force in real time according to the current pantograph contact force value, and specifically comprises:
acquiring a running speed signal of the motor train unit by a vehicle communication system, acquiring a dynamic contact force signal by a pantograph-catenary contact force sensor, and comparing the actually measured pantograph-catenary dynamic contact force of the motor train unit with pantograph-catenary dynamic contact force interval values corresponding to different set speed levels;
when the actual measurement bow net dynamic contact force value of the motor train unit exceeds the standard value requirement value, the air supply pressure value of the pantograph valve plate is adjusted, and the specific adjusting method comprises the following steps: when the actually measured bow net dynamic contact force value is larger than the upper limit of the bow net dynamic contact force interval corresponding to the speed level, reducing the air supply pressure, setting the initial value of the reduction of the air supply pressure, and when the first step-down is checked to be invalid, carrying out step-down control by carrying out step-down control on secondary and subsequent step-down for multiple times in an initial value index increasing mode until the actually measured bow net dynamic contact force value falls into the bow net dynamic contact force interval corresponding to the speed level;
when the actual measurement bow net dynamic contact force value is smaller than the lower limit of the corresponding bow net dynamic contact force interval under the speed level, the air supply pressure is increased, the initial value of the air supply pressure increase is set, when the primary pressurization is checked to be invalid, the secondary and subsequent multiple pressurization adopt the initial value index increasing mode to carry out pressurization control until the actual measurement bow net dynamic contact force value falls into the corresponding bow net dynamic contact force interval under the speed level.
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