CN112918263A

CN112918263A - Pantograph head and pantograph

Info

Publication number: CN112918263A
Application number: CN202110306837.9A
Authority: CN
Inventors: 李春茂; 林佳慧; 杨泽锋; 魏文赋; 阴国锋; 陈琦琛; 杨林; 李豪; 黄樟林
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2021-06-08

Abstract

The invention discloses a pantograph bow and a pantograph, wherein the pantograph bow comprises two carbon sliding plates, a bow supporting seat and a bow angle positioned between the two carbon sliding plates, the two carbon sliding plates are supported and fixed through the two sliding plate supporting seats, the bow supporting seat is parallel to the extending direction of the two carbon sliding plates and is fixed between the two sliding plate supporting seats, the pantograph bow further comprises a guide rail, the guide rail is fixed on the bow supporting seat and the sliding plate supporting seat and is connected with the bow angle, and the bow angle can slide relative to the guide rail. The pantograph head and the pantograph provided by the invention can effectively solve the problem of poor insulation performance between the angle of the existing pantograph and the pan of the existing pantograph.

Description

Pantograph head and pantograph

Technical Field

The invention relates to the technical field of pantographs, in particular to a pantograph head of a pantograph and the pantograph.

Background

The power source of the high-speed train is obtained through the sliding contact between the pantograph and the overhead contact system, so the pantograph-overhead contact system influences the running safety of the train. Because there are uneven positions such as wired switch, anchor section joint on the contact net, can make high-speed train at the operation in-process, the contact net bores pantograph bow below to make contact net or pantograph one side impaired, and then take place the bow net accident.

In order to prevent the occurrence of a pantograph accident, pantograph corners are symmetrically arranged on both sides of a pantograph head along the length direction of the pantograph head to guide an uneven part for smooth transition. However, with this method, once the pantograph is in a pantograph lowering state and the insulation performance of the support insulator is normal, the angle of the pantograph is close to the roof of the train (i.e. the pantograph pan is formed by splicing hollow aluminum sections and welded with the train shell as a whole and grounded), the insulation strength between the angle of the pantograph and the roof of the train is relatively weak, and the pantograph is exposed outdoors for a long time and is easily affected by the comprehensive environment, so that the insulation performance is further lowered, and flashover and discharge phenomena between the angle of the pantograph and the roof of the train occur.

At present, few researches on the pantograph angle are conducted at home and abroad, and flashover and discharge phenomena between the pantograph angle and a vehicle roof greatly threaten the safe operation of a high-speed train, so that the invention research on improving the insulation performance between the pantograph angle and a pantograph basin is urgently needed.

Disclosure of Invention

The invention aims to provide a pantograph, which aims to solve the problem that the insulation performance between the angle of the existing pantograph and a pan of the existing pantograph is weak.

The technical scheme for solving the technical problems is as follows:

the invention provides a pantograph bow, which comprises two carbon sliding plates, a bow supporting seat and a bow angle positioned between the two carbon sliding plates, wherein the two carbon sliding plates are supported and fixed through the two sliding plate supporting seats, the bow supporting seat is fixed between the two sliding plate supporting seats, the pantograph bow further comprises a guide rail, the guide rail is fixed on the bow supporting seat and the sliding plate supporting seat and is connected with the bow angle, and the bow angle can slide relative to the guide rail.

Optionally, the guide rail and the bow corner are slidably connected by a sliding slot.

Based on the scheme, the invention further provides the pantograph which comprises the pantograph head.

Optionally, the pantograph further comprises a pantograph pan, a bottom frame, a support insulator connecting the pantograph pan and the bottom frame, a pneumatic pantograph mechanism arranged above the bottom frame, and a lifting arm located between the pantograph head and the bottom frame, wherein the pneumatic pantograph mechanism drives the lifting arm to drive the pantograph head to be switched between a pantograph lifting state and a pantograph lowering state.

Optionally, the lifting arm comprises an upper arm connected to the pantograph head, the pantograph further comprises a pantograph angle side guide rod comprising a fixed end fixedly connected to the upper arm and a switching end connected to the pantograph angle, the switching end having a first position allowing the pantograph angle to extend and a second position allowing the pantograph angle to retract; in the bow-rising state, the lifting arm drives the bow angle side guide rod to be located at the first position, and the bow angle is extended; in the bow lowering state, the lifting arm drives the bow angle side guide rod to be located at the second position, and the bow angle is contracted.

Optionally, the lifting arm further comprises a lower arm part, an upper guide rod and a lower guide rod, the lower arm part, the upper guide rod and the lower guide rod are connected with the upper arm and the bottom frame, the upper arm and the lower arm part are rotatably connected, one end of the upper guide rod is fixedly connected with the upper arm, the other end of the upper guide rod is hinged with the sliding plate supporting seat, one end of the lower guide rod is fixed on the bottom frame, the other end of the lower guide rod is hinged with the upper arm, and the pneumatic lifting bow mechanism is connected with the lower.

Optionally, the pneumatic pantograph mechanism comprises a throttle valve, an air filter, an electromagnetic valve, a pressure regulating valve, two pressure sensors and an air bag, wherein the throttle valve is installed in front of an air inlet of the air filter, the air filter is connected with the pressure regulating valve through the electromagnetic valve, the two pressure sensors are respectively arranged behind the air inlet of the air filter and the pressure regulating valve, and the air bag is connected with the pressure regulating valve through an air path.

Optionally, the lifting arm comprises two upper arms, and the lifting arm further comprises two tensioning ropes, and the two tensioning ropes are fixed on the two upper arms in a crossed manner.

Optionally, the pantograph further comprises a damper fixed to the base frame, the damper being connected to the lifting arm.

The invention has the following beneficial effects:

according to the technical scheme, namely the pantograph head and the pantograph provided by the embodiment of the invention, the pantograph angle can slide relative to the guide rail, so that when a high-speed rail receives a pantograph lifting instruction, the pantograph angle can slide outwards along the guide rail, and the pantograph head and the pantograph can be completely extended to be in contact with a contact network; and when the high-speed rail receives the pantograph descending instruction, the pantograph angle can slide inwards along the guide rail, so that the high-speed rail is retracted to be far away from the overhead contact system. Like this, can effectively avoid the influence each other between bow angle and the bow basin when falling the bow to can prevent flashover, the phenomenon of discharging between bow angle and the high-speed railway roof, thereby further effectively solve the problem that insulating properties is weak between current pantograph bow angle and the pantograph bow basin.

Drawings

Fig. 1 is a schematic structural diagram of a pantograph according to an embodiment of the present invention;

fig. 2 is a front view of a pantograph according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic structural diagram of a pantograph according to an embodiment of the present invention in a pantograph lifting state;

fig. 5 is a schematic structural diagram of a pantograph according to an embodiment of the present invention in a pantograph descending state.

Description of the reference numerals

11-carbon slide plate; 12-bow head support seat; 13-bow angle; 14-a slide plate support seat; 15-a guide rail; 16-bow corner side guides; 2-pantograph pan; 3-a chassis; 4-a support insulator; 5-a pneumatic lifting bow mechanism; 6-lifting arm; 61-upper arm; 62-lower arm; 63-upper guide rod; 64-lower guide bar; 65-tensioning the rope; 7-a damper.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Examples

Before describing embodiments of the present invention, the function of each feature of the embodiments of the present invention will be described:

upper arm 61: the pantograph head weight supporting device is used for supporting the weight of a pantograph head, transmitting upward pressure and ensuring the working height of a pantograph;

lower arm 62: in order to support the weight of the pantograph, the pantograph lifting torque is transmitted, the length of the pantograph determines the working height of the pantograph, a steel cable guide rail 15 is arranged on the pantograph lifting mechanism, the steel cable guide rail is connected with a pneumatic pantograph lifting mechanism 5, and the pneumatic pantograph lifting mechanism 5 drives a lower arm 62 to rotate around a shaft. An air path is arranged in the pneumatic lifting bow mechanism, is connected with a hose through a pipe joint and is used as an air path in the pneumatic lifting bow mechanism 5;

an upper guide rod 63: on one hand, the carbon sliding plate 11 can be adjusted to be in a horizontal position at each movement height; on the other hand, the interference of external force on the bow head can be buffered and eliminated in the movement process of the high-speed rail, and meanwhile, the sharp swing of the bow head in the operation process can be prevented so as to maintain the stability of the bow head;

lower guide rods 64: used for adjusting the maximum lifting bow height and the sliding plate motion track.

The invention provides a pantograph head, which is shown in fig. 1 to 3 and comprises two carbon sliding plates 11, a pantograph head supporting seat 12 and a pantograph angle 13 positioned between the two carbon sliding plates 11, wherein the two carbon sliding plates 11 are supported and fixed through the two sliding plate supporting seats 14, the pantograph head supporting seat 12 is fixed between the two sliding plate supporting seats 14, the pantograph head further comprises a guide rail 15, the guide rail 15 is fixed on the pantograph head supporting seat 12 and the sliding plate supporting seat 14 and is connected with the pantograph angle 13, and the pantograph angle 13 can slide relative to the guide rail 15.

The invention has the following beneficial effects:

through the technical scheme, namely the pantograph head and the pantograph provided by the embodiment of the invention, as the pantograph angle 13 can slide relative to the guide rail 15, when a high-speed rail receives a pantograph lifting command, the pantograph angle 13 can slide outwards along the guide rail 15, so that the pantograph head and the pantograph are completely extended to be in contact with a contact network; when the high-speed rail receives a pantograph-lowering command, the pantograph angle 13 can slide inwards along the guide rail 15, so that the high-speed rail is retracted away from the overhead line system. Like this, can effectively avoid the influence each other between bow angle 13 and the pantograph bow basin 2 when falling the bow to can prevent flashover, the phenomenon of discharging between bow angle 13 and the high-speed railway roof, thereby further effectively solve the problem that insulating properties is weak between current pantograph bow angle 13 and the pantograph bow basin 2. In addition, the material of the bow 13 provided in the embodiment of the present invention is not limited, for example, in some embodiments, the bow 13 may be an insulating, semi-insulating or metal bow 13.

Alternatively, referring to fig. 3, the guide rail 15 and the bow 13 are slidably connected by a sliding groove. Of course, the design scheme of the present invention that can generate the relative sliding motion between the bow angle 13 and the guide rail 15 is not particularly limited, and can be set by those skilled in the art according to the actual situation.

According to the specific implementation manner provided by the embodiment of the present invention, optionally, referring to fig. 1 and 2, the pantograph further includes a pantograph pan 2, a bottom frame 3, a support insulator 4 connecting the pantograph pan 2 and the bottom frame 3, a pneumatic pantograph mechanism 5 disposed above the bottom frame 3, and a lifting arm 6 located between the pantograph head and the bottom frame 3, wherein the pneumatic pantograph mechanism 5 drives the lifting arm 6 to drive the pantograph head to switch between a pantograph lifting state and a pantograph lowering state.

Specifically, the pneumatic pantograph mechanism 5 (not shown in the internal structural view of the pneumatic pantograph mechanism 5) includes a throttle valve, an air filter, an electromagnetic valve, a pressure regulating valve, two pressure sensors, and an air bag, wherein the throttle valve is installed in front of an air inlet of the air filter, the air filter is connected to the pressure regulating valve through the electromagnetic valve, the two pressure sensors are respectively disposed behind the air inlet of the air filter and the pressure regulating valve, and the air bag is connected to the pressure regulating valve through an air path.

Alternatively, referring to fig. 1, the lifting arm 6 comprises an upper arm 61, the upper arm 61 being connected to the pantograph head, the pantograph further comprises an pantograph side guide bar 16, the pantograph side guide bar 16 having a fixed end fixed to the upper arm 61 and being connected to the switching end of the pantograph 13, the switching end having a first position allowing the pantograph 13 to extend and a second position allowing the pantograph 13 to retract; in the pantograph lifting state, the lifting arm 6 drives the pantograph angle side guide rod 16 to be positioned at the first position, and the pantograph angle 13 extends; in the pantograph state, the lifting arm 6 drives the pantograph angle side guide rod 16 to be located at the second position, and the pantograph angle 13 is contracted.

Optionally, referring to fig. 1, the lifting arm 6 further includes a lower arm 62 connecting the upper arm 61 and the base frame 3, an upper guide rod 63 and a lower guide rod 64, the upper arm 61 and the lower arm 62 are rotatably connected, one end of the upper guide rod 63 is fixedly connected to the upper arm 61, the other end is hinged to the skateboard support base 14, one end of the lower guide rod 64 is fixedly connected to the base frame 3, the other end is hinged to the upper arm 61, and the pneumatic pantograph mechanism 5 is connected to the lower arm 62 and drives the lifting arm 6 to move.

Alternatively, according to the pantograph provided by the embodiment of the present invention, referring to fig. 1, the lifting arm 6 includes two upper arms 61, and in order to increase the stability of the head in the transverse direction and prevent the head from deviating from the center line due to wind resistance, the lifting arm 6 further includes two tensioning ropes 65, and the two tensioning ropes 65 are fixed to the two upper arms 61 in a crossing manner.

Besides, optionally, according to the pantograph provided by the embodiment of the present invention, referring to fig. 1, the pantograph further includes a damper 7 fixed to the base frame 3, and the damper 7 is connected to the lifting arm 6. The damper 7 can adjust and buffer the rotation of the lower arm 62, i.e. the damping force is formed by stretching and compressing the piston rod to move back and forth through external force so that the lower arm 62 rotates slowly, thereby achieving the effect of shock absorption.

The pantograph provided by the embodiment of the invention has the following working principle:

referring to fig. 4, when the pantograph is lifted, the pneumatic pantograph lifting mechanism 5 is started, the electromagnetic valve of the pantograph is controlled to be powered on, so that air flows through an air filter and the like through the electromagnetic valve, then when the air pressure reaches the rated working air pressure of the pantograph, compressed air enters an air bag through the electromagnetic valve in the vehicle and the pantograph control box, the air bag is expanded to form an air spring, the air spring is expanded to push a steel wire rope to drive a lower arm 62 to move, the lower arm 62 supports an upper arm 61 rod and a pantograph head under the assistance of a pull rod, the pantograph head always tends to be in a horizontal state within a working height range under the action of an upper guide rod 63, and a pantograph angle side guide rod 16 drives a pantograph angle 13 to horizontally slide outwards relative to a guide;

referring to fig. 5, when lowering the pantograph, the pneumatic pantograph mechanism 5 is closed, the solenoid valve of the pantograph is controlled to lose power, the air conveying path is cut off, the pressure air in the air bag is discharged from the regulating valve, meanwhile, the air between the solenoid valve and the pressure regulating valve is discharged, the air bag contracts, the lower arm 62 is driven to contract downwards, the pantograph falls onto the bottom frame 3 stably under the action of gravity and the auxiliary action of the damper 7, the pantograph falls, and the guide rod 16 on the side of the pantograph angle drives the guide rail 15 to slide horizontally inwards to the contracted state of the pantograph angle 13.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A pantograph head, characterized in that, the pantograph head comprises two carbon slide plates (11), a bow head support seat (12) and a pantograph between the two carbon slide plates (11) The bow angle (13) of the two carbon slide plates (11) is supported and fixed by two slide plate support seats (14), and the bow head support seat (12) is parallel to the extension of the two carbon slide plates (11). The pantograph head further includes a guide rail (15), and the guide rail (15) is fixed on the bow head support base (12) and all the support bases (14). The slide support seat (14) is connected to the bow angle (13), and the bow angle (13) can slide relative to the guide rail (15).

2 . The pantograph head according to claim 1 , wherein the guide rail ( 15 ) and the bow angle ( 13 ) are slidably connected through a chute. 3 .

3. A pantograph, wherein the pantograph comprises the pantograph head according to claim 1 or 2.

4. The pantograph according to claim 3, characterized in that, the pantograph further comprises a pantograph basin (2), a chassis (3), a pantograph basin (2) connected to the pantograph and The supporting insulator (4) of the bottom frame (3), the pneumatic lifting bow mechanism (5) arranged above the bottom frame (3), and the pantograph bow head and the bottom frame (3) The lifting arm (6) between the two, the pneumatic lifting bow mechanism (5) drives the lifting arm (6) to drive the pantograph bow head to switch between the bow-raising state and the bow-lowering state.

5. The pantograph according to claim 4, wherein the lifting arm (6) comprises an upper arm (61), the upper arm (61) is connected to the pantograph head, and the pantograph It also includes an arched side guide rod (16), the arched angle side guide rod (16) includes a fixed end fixed to the upper arm (61), and a switching end connected to the arched angle (13), the switching end including a first position for extending the bow angle (13), and a second position for retracting the bow angle (13);

In the bow-raising state, the lifting arm (6) drives the bow-angle side guide rod (16) to be at the first position, and the bow-angle (13) extends;

In the bow lowering state, the lifting arm (6) drives the bow angle side guide rod (16) to be at the second position, and the bow angle (13) contracts.

6. The pantograph according to claim 5, characterized in that, the lifting arm (6) further comprises a lower arm (62) connecting the upper arm (61) and the bottom frame (3), an upper guide A rod (63) and a lower guide rod (64), the upper arm (61) and the lower arm (62) are rotatably connected, one end of the upper guide rod (63) is fixedly connected with the upper arm (61), and the other One end of the lower guide rod (64) is fixedly connected to the base frame (3) at one end, and the other end is hinged to the upper arm (61), and the pneumatic lifting bow mechanism (5) Connect the lower arm (62) and drive the lift arm (6) to move.

7. The pantograph according to claim 4, characterized in that the pneumatic elevating bow mechanism (5) comprises a throttle valve, an air filter, a solenoid valve, a pressure regulating valve, two pressure sensors and an air bag, wherein , the throttle valve is installed in front of the air inlet of the air filter, the air filter is connected with the pressure regulating valve through the solenoid valve, and the two pressure sensors are respectively arranged at the inlet of the air filter. After the air port and the pressure regulating valve, the air bag is connected to the pressure regulating valve through an air circuit.

8. The pantograph according to claim 4, wherein the lifting arm (6) comprises two upper arms (61), and the lifting arm (6) further comprises two tensioning ropes (65), The two tension ropes (65) are cross-fixed on the two upper arms (61).

9. The pantograph according to any one of claims 4-8, characterized in that, the pantograph further comprises a damper (7) fixed on the base frame (3), the damper (7) A device (7) is connected to the lift arm (6).