CN115570983A

CN115570983A - Self-adaptive lift pantograph for train

Info

Publication number: CN115570983A
Application number: CN202211318221.4A
Authority: CN
Inventors: 王家斌; 商雯斐; 高广军; 张洁; 孙博; 于尧; 张琰; 周俊饶
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-01-06

Abstract

The application discloses self-adaptation lift force pantograph for train, including the pantograph base, pantograph armed lever and the pantograph bow that connect gradually to and self-adaptation air current flow direction rotary device and self-adaptation lift force fin, self-adaptation air current flow direction rotary device installs on the pantograph armed lever, and self-adaptation lift force fin is including fixed front wing, vertical force sensor, movable back wing and fin drive mechanism. According to the invention, the downward pressure formed by the action of the sinking airflow in the running process of the train is obtained through the vertical force sensor, and the wing transmission mechanism is controlled according to the downward pressure to drive the movable rear wing to rotate for a certain angle, so that the lifting force of the self-adaptive lifting wing is improved, the bow net separation phenomenon in the running process of the train is avoided, the self-adaptive lifting wing has self-adaptive performance, the self-adaptive lifting wing can be automatically adjusted according to the running environment, the self-adaptive lifting wing has a wide application range, and the stability in the running process of the train is effectively improved.

Description

Self-adaptive lift pantograph for train

Technical Field

The invention relates to the technical field of pantographs, in particular to a self-adaptive lifting force pantograph for a train.

Background

The pantograph is an important component for supporting the train operation. When the train runs, the electric energy on the contact net passes through the pantograph to the electric equipment such as a motor in the train, thereby driving the train. The pantograph is pressed on the contact net by a pantograph lifting spring. Under the common environmental condition, the pre-pressure between the contact net and the pantograph can be met through the pantograph lifting spring.

However, in mountainous areas, hilly areas and desert gobi areas in China, when environmental wind flows through a railway line, part of the environmental wind can become sinking air current to act on contact networks and pantograph areas of trains under the influence of the terrain around the line. Under the influence of the sinking airflow, the force provided by the pantograph lifting spring cannot enable the pantograph to be tightly pressed on the contact net, so that the pantograph is separated from the contact net. After the pantograph and catenary are separated, the train cannot continuously obtain electric energy from the catenary, and therefore the train is forced to stop running.

Disclosure of Invention

The invention provides a self-adaptive lift pantograph for a train, which is used for solving the technical problem that the pantograph cannot always press a contact net because the existing pantograph is easily influenced by sinking airflow, so that the train is forced to stop running.

In order to solve the technical problems, the invention provides a self-adaptive lifting force pantograph for a train, which comprises a pantograph base, a pantograph arm rod, a pantograph head, a self-adaptive airflow direction rotating device and a self-adaptive lifting force wing piece, wherein the self-adaptive airflow direction rotating device is installed on the pantograph arm rod, the self-adaptive lifting force wing piece comprises a fixed front wing, a vertical force sensor, a movable rear wing and a wing piece transmission mechanism, the fixed front wing is rotatably installed on the self-adaptive airflow direction rotating device, the vertical force sensor and the wing piece transmission mechanism are installed on the fixed front wing, the movable rear wing is installed on the wing piece transmission mechanism, and the wing piece transmission mechanism adjusts the rotation angle of the movable rear wing according to the downward pressure acquired by the vertical force sensor.

As a further improvement of the invention: self-adaptation airflow direction rotary device includes fixed baseplate, airflow direction detection sensor, rotatory fin support and rotation drive mechanism, fixed baseplate fixed mounting in on the pantograph armed lever, airflow direction detection sensor install in pantograph bow below for acquire the airflow direction, rotatory fin support cover is located fixed baseplate is last, and connects through the bearing fixed baseplate, rotation drive mechanism install in fixed baseplate is last, is used for the drive rotatory fin support can wind fixed baseplate is rotatory.

As a further improvement of the invention: the fixed front wing is of a traditional convex wing type structure, the side faces of the fixed front wing are vertical planes, and the installation overhaul hole of the wing piece transmission mechanism and a motion channel of the embedded transmission arm are reserved in the fixed front wing.

As a further improvement of the invention: the vertical force sensor is a probe type air pressure sensor, and the acquired air pressure intensity and the acquired change intensity are used for obtaining the down pressure and the change intensity of the self-adaptive lift force pantograph for the train.

As a further improvement of the invention: the self-adaptive lift force pantograph for the train is characterized in that the rotating range of the movable rear wing is 0-15 degrees.

As a further improvement of the invention: the pantograph type air conditioner further comprises a controller installed on the pantograph base, and the controller is electrically connected with the airflow direction detection sensor, the rotary transmission mechanism, the vertical force sensor and the fin transmission mechanism.

As a further improvement of the invention: the airflow direction detection sensor is a porous probe type air pressure sensor, and the airflow direction at the head of the pantograph is judged by collecting pressure difference among different holes.

As a further improvement of the invention: the air flow direction detection sensor, the rotary transmission mechanism, the vertical force sensor, the fin transmission mechanism and the controller are electrically connected with a 380V alternating current power supply of the train, and power is supplied by the 380V alternating current power supply of the train.

As a further improvement of the invention: the bearing is a tapered roller bearing.

The invention has the following beneficial effects: according to the self-adaptive lifting force pantograph for the train, disclosed by the invention, the downward pressure formed by the action of the sunken airflow in the running process of the train is obtained through the vertical force sensor, and the wing transmission mechanism is controlled according to the downward pressure to drive the movable rear wing to rotate for a certain angle, so that the lifting force of the self-adaptive lifting force wing is improved, the bow net separation phenomenon in the running process of the train is avoided, the self-adaptive lifting force pantograph has self-adaptability, can be automatically adjusted according to the running environment, has a larger adaptive range, and effectively improves the stability in the running process of the train.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an adaptive lift pantograph for a train in accordance with a preferred embodiment of the present invention;

FIG. 2 is a partial exploded view of an adaptive lift pantograph for a train in accordance with a preferred embodiment of the present invention;

fig. 3 is a schematic structural diagram of a rotation transmission mechanism of the adaptive lift pantograph for a train according to the preferred embodiment of the present invention.

The reference numerals in the figures denote:

1. a pantograph base; 2. a pantograph arm lever; 3. a pantograph head; 4. self-adapting airflow direction rotating device; 41. a fixed base; 42. an airflow direction detection sensor; 43. a rotating vane support; 44. a rotation transmission mechanism; 5. an adaptive lift airfoil; 51. fixing the front wing; 52. a vertical force sensor; 53. a movable rear wing; 54. a wing transmission mechanism; 6. a controller; 7. the pantograph slide plate.

Detailed Description

Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that devices or elements must have specific orientations, be constructed and operated in specific orientations, and that when the absolute position of an object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the description of the application should not be construed as an absolute limitation of quantity, but rather as the presence of at least one. The use of the terms "comprising" or "including" and the like in the description of the present application is intended to indicate that the element or item preceding the term covers the element or item listed after the term and its equivalents, without excluding other elements or items.

It should also be noted that, unless expressly stated or limited otherwise, the words "mounted," "connected," and the like in the description of the present application are to be construed broadly and encompass, for example, connections that may be fixed or removable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.

As shown in fig. 1 to 3, the adaptive lift pantograph for a train according to the present embodiment includes a pantograph base 1, a pantograph arm 2, and a pantograph head 3, which are sequentially connected, and further includes an adaptive airflow direction rotating device 4 and an adaptive lift wing 5, the adaptive airflow direction rotating device 4 is mounted on the pantograph arm 2, the adaptive lift wing 5 includes a fixed front wing 51, a vertical force sensor 52, a movable rear wing 53, and a wing transmission mechanism 54, the fixed front wing 51 is rotatably mounted on the adaptive airflow direction rotating device 4, the vertical force sensor 52 and the wing transmission mechanism 54 are mounted on the fixed front wing 51, the movable rear wing 53 is mounted on the wing transmission mechanism 54, and the wing transmission mechanism 54 adjusts a rotation angle of the movable rear wing 53 according to a down force obtained by the vertical force sensor 52.

Wherein, pantograph base 1 installs in the top of train, and pantograph armed lever 2 articulates and installs on pantograph base 1, still installs in pantograph slide 7 on pantograph bow 3, and pantograph slide 7 butt contact net all the time at the train operation in-process, train pass through the pantograph and obtain the electric energy from the contact net, and its concrete theory of operation is prior art, no longer gives unnecessary details here.

In the self-adaptation lift force pantograph for train of this embodiment, still including installing in the controller 6 of pantograph base 1, vertical force transducer 52 and fin drive mechanism 54 are connected to controller 6 electricity, wherein, the downforce that the pantograph born that controller 6 obtained through vertical force transducer 52, and adjust the turned angle of movable back wing 53 according to the downforce, thereby promote the aerodynamic lift of train pantograph head 3 in the operation process, and compensate the downforce that receives the effect of sinking air current to form in the operation process of train, thereby guarantee the normal contact between pantograph and contact network, promote the stability of train operation.

In the adaptive lift pantograph for train of this embodiment, the adaptive airflow direction rotating device 4 includes a fixed base 41, an airflow direction detecting sensor 42, a rotating vane support 43 and a rotating transmission mechanism 44, the fixed base 41 is fixedly mounted on the pantograph arm lever 2, the airflow direction detecting sensor 42 is mounted below the pantograph head 3 for obtaining the airflow direction, the rotating vane support 43 is sleeved on the fixed base 41 and is connected to the fixed base 41 through a bearing, and the rotating transmission mechanism 44 is mounted on the fixed base 41 for driving the rotating vane support 43 to rotate around the fixed base 41.

Wherein, the fixed base 41 is disposed on the pantograph arm 2 and welded with the pantograph arm 2 as an integral structure, the fixed base 41 is disposed with a mounting cavity for a driving wheel and a driving motor, a bolt hole for facilitating mounting is attached to the surface of the cavity, the airflow direction detecting sensor 42 in this embodiment is an independent component, and is fixedly mounted on the plane below the pantograph head 3 through a bolt, the rotating wing support 43 is sleeved on the fixed base 41 and connected with the fixed base 41 through a bearing, in this embodiment, in order to overcome the effects of downward pressure and lifting force, the bearing is a tapered roller bearing, the rotating transmission mechanism 44 is mounted between the fixed base 41 and the rotating wing support 43, the rotating wing support 43 is driven to rotate through friction between the driving wheel inside the fixed base 41 and the inner wall of the rotating wing support 43 or through gear transmission, and the driving motor is connected to the controller 6, so that the rotation angle of the rotating wing support 43 is controlled by the controller 6.

In the adaptive lift force pantograph for a train of this embodiment, the airflow direction detecting sensor 42 is a porous probe type air pressure sensor, and is connected to the controller 6, so that the air pressure in a range of 360 ° at the sensor can be collected, and the airflow direction can be calculated and judged by collecting the pressure difference between different holes and processing the pressure difference by the controller 6, and the airflow direction at the pantograph head 3 can be obtained.

In this embodiment, the rotary wing support 43 is driven by the rotary transmission mechanism 44 to rotate around the fixed base 41 at any angle, the rotation angle of the rotary transmission mechanism 44 is obtained by the airflow direction detection sensor 42, and the controller 6 controls the rotary transmission mechanism 44 to move, so that the front surface of the rotary wing support 43 always faces the airflow coming from the pantograph head 3.

In this embodiment, the fixed front wing 51 of the adaptive lift wing 5 is mounted on the rotating wing support 43 of the adaptive airflow flow direction rotating device 4, an installation access hole of the wing transmission mechanism 54 and a motion channel of the embedded transmission arm are reserved in the fixed front wing 43, and are fixed on the rotating wing support 43 by riveting or welding, the vertical force sensor 52 is fixed on the inner side surface of the fixed front wing 51 by riveting, the movable rear wing 53 is mounted behind the fixed front wing 51 by the wing transmission mechanism 54 and a roller bearing, a locking mechanism is attached to the end of the movable rear wing 53 for limiting the rotation range of the movable rear wing 53, the movable rear wing 53 drives the embedded transmission arm to move by the wing transmission mechanism 54 and can be fixed at a certain angle and locked as required, the wing transmission mechanism 54 is built in the fixed front wing 51, the movable rear wing 53 rotates around the rotation axis of the embedded transmission arm, the rotation range of the movable rear wing 53 in this embodiment is 0-15 °, the rotation of the movable rear wing 53 operates with the change of the downforce and performs angle matching according to the downforce value, the vertical force sensor 52 is a probe type barometer, the change of the pantograph head and the adaptive lift force and the pantograph strength of the pantograph head can be increased approximately after the test, and the actual pantograph head is installed, and the pantograph is installed by monitoring, and the approximate to be installed by the pantograph speed of the pantograph 11.

In the adaptive lift pantograph for a train according to the present embodiment, the fixed front wing 51 has a conventional convex wing structure, the side surfaces of the fixed front wing 51 are vertical planes, and an installation access hole of the wing transmission mechanism 54 and a movement channel of the embedded transmission arm are reserved in the fixed front wing 51.

In the adaptive lift pantograph for a train according to the present embodiment, the airflow direction detection sensor 42, the rotation transmission mechanism 44, the vertical force sensor 52, the wing transmission mechanism 54, and the controller 6 are electrically connected to a 380V ac power supply of the train, and power is supplied from the 380V ac power supply of the train.

In summary, the controller 6 of the present invention obtains the airflow direction at the pantograph head 3 through the airflow direction detecting sensor 42, controls the rotation transmission mechanism 44 to move according to the airflow direction, so that the fronts of the rotating wing support 43 and the adaptive lift wing 5 always face the airflow coming at the pantograph head 3, obtains the downforce formed by the pantograph under the action of the downdip airflow through the vertical force sensor 52, controls the wing transmission mechanism 54 to drive the movable rear wing 53 to rotate according to the downforce, so as to improve the aerodynamic lift force of the pantograph head 3 during the operation of the train, and compensates the downforce formed by the downdip airflow during the operation of the train, thereby ensuring the normal contact between the pantograph and the contact net, and having the adaptability, being capable of self-adjusting the structure according to the operation environment, having a large adaptation range, and effectively improving the current receiving environment during the operation of the pantograph and the stability during the operation of the train.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a self-adaptation lift force pantograph for train, is including pantograph base (1), pantograph armed lever (2) and pantograph bow (3) that connect gradually, its characterized in that still includes self-adaptation air current flow direction rotary device (4) and self-adaptation lift force fin (5), self-adaptation air current flow direction rotary device (4) install in on pantograph armed lever (2), self-adaptation lift force fin (5) are including fixed front wing (51), vertical force transducer (52), movable rear wing (53) and fin drive mechanism (54), fixed front wing (51) rotatably install in on self-adaptation air current flow direction rotary device (4), vertical force transducer (52) and fin drive mechanism (54) install in on fixed front wing (51), movable rear wing (53) install in on fin drive mechanism (54), fin drive mechanism (54) basis the down force that vertical force transducer (52) obtained adjusts the turned angle of movable rear wing (53).

2. The adaptive lift pantograph for trains according to claim 1, wherein the adaptive airflow direction rotating device (4) comprises a fixed base (41), an airflow direction detecting sensor (42), a rotating wing support (43) and a rotating transmission mechanism (44), the fixed base (41) is fixedly installed on the pantograph boom (2), the airflow direction detecting sensor (42) is installed below the pantograph head (3) and used for acquiring the airflow direction, the rotating wing support (43) is sleeved on the fixed base (41) and connected with the fixed base (41) through a bearing, and the rotating transmission mechanism (44) is installed on the fixed base (41) and used for driving the rotating wing support (43) to rotate around the fixed base (41).

3. The adaptive lift pantograph for trains according to claim 1, wherein the fixed front wing (51) has a conventional convex wing type structure, the side surfaces of the fixed front wing (51) are vertical planes, and an installation access hole of the wing transmission mechanism (54) and a motion channel of the embedded transmission arm are reserved inside the fixed front wing (51).

4. The adaptive lift pantograph for trains as claimed in claim 1, wherein the vertical force sensor (52) is a probe type air pressure sensor, and the obtained air pressure intensity and variation thereof are used to obtain the down force and variation thereof applied to the adaptive lift pantograph for trains.

5. The adaptive lift pantograph for trains according to claim 1, wherein the rotation range of said movable rear wing (53) is comprised between 0 ° and 15 °.

6. The adaptive lift pantograph for trains as claimed in claim 2, further comprising a controller (6) mounted to the base (1) of the pantograph, said controller (6) electrically connecting said airflow direction detecting sensor (42), said rotation transmission mechanism (44), said vertical force sensor (52) and said wing transmission mechanism (54).

7. The adaptive lift pantograph for trains as claimed in claim 2, wherein said flow direction detecting sensor (42) is a multi-hole probe type air pressure sensor, and the flow direction of the air at the pantograph head (3) is determined by collecting the pressure difference between different holes.

8. The adaptive lift pantograph of claim 7, wherein the airflow direction detection sensor (42), the rotation actuator (44), the vertical force sensor (52), the wing actuator (54) and the controller (6) are electrically connected to a 380V AC power source of the train, and power is supplied from the 380V AC power source of the train.

9. The adaptive lift pantograph for trains of claim 2, wherein said bearings are tapered roller bearings.