CN114475259A

CN114475259A - Rail train pantograph device capable of automatically adjusting contact pressure of pantograph-catenary

Info

Publication number: CN114475259A
Application number: CN202210223437.6A
Authority: CN
Inventors: 周爱萍; 沈丽琴; 王亮军; 金立艳; 陶雨濛; 卫妍
Original assignee: Nanjing Communications Institute of Technology
Current assignee: Nanjing Communications Institute of Technology
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-05-13

Abstract

The invention discloses a rail train pantograph device capable of automatically adjusting contact pressure of a pantograph-catenary, which comprises a base, wherein a driving mechanism, a sliding mechanism and a lifting mechanism are arranged above the base; contact pressure is adjusted in time through actuating mechanism, need not stop after the maintainer board the rail train roof and carry out the manual measurement and adjust the contact pressure between the bow net, save the cost of labor, the personal safety of protection maintainer, the loaded down with trivial details nature of measurement with the adjustment has been reduced, the contact pressure of train between the bow net in the operation process has been guaranteed always at reasonable within range, reduce the condition of pantograph current collection trouble that the contact pressure arouses unusually in the operation process because road bed is not smooth and smooth, contact net height changes etc. avoid the unusual wearing and tearing of pantograph part that contact pressure too big brought in the operation process, the cracked condition of bow even, reduce the operation accident of bow net, therefore, the safety is high, and the suitability is strong.

Description

Rail train pantograph device capable of automatically adjusting contact pressure of pantograph-catenary

Technical Field

The invention relates to the technical field of electric locomotives, in particular to a rail train pantograph device capable of automatically adjusting contact pressure of a pantograph-catenary.

Background

Since the new century, the development scale and the population inflow of cities in China are continuously increased, and rail transit is increasingly the preferred public transport for people going out due to the advantages of energy conservation, land saving, large transportation volume, environmental protection, no pollution and the like. The rail train is mainly driven by electric power, and high-voltage electricity of a contact net is led to electric equipment at the bottom of the train through a pantograph. The contact pressure between the pantograph and the contact net directly influences the current receiving quality between the pantograph and the contact net. Therefore, when the train runs safely, reliable contact between the pantograph and a contact network is needed, and good current collection is ensured.

However, the contact pressure between the pantograph-catenary loops is constantly changed due to the vibration in the running process of the train, the height change of a track bed, the change of the height of the catenary loop, equipment abrasion caused by long-term running and the like, and the requirement of stable current collection of the train cannot be met. If the contact pressure is too large, the abrasion of the pantograph is excessively increased, so that the service life of the pantograph is influenced; if the contact pressure is too low, the pantograph and the overhead line system are separated, and accidents such as arc discharge and net scraping are caused. Therefore, the contact pressure between the pantograph and the contact network needs to be measured and adjusted in time, so that the safe operation of the rail train can be met.

At present, after a train runs for a period of time and a pantograph is overhauled and replaced, a vehicle overhaul technician ascends a vehicle roof to measure and adjust contact pressure. The maintainer utilizes the manual measuring that contacts pressure of pulling pantograph bow of tensiometer, uses the spanner to rotate the nut on the pantograph upwarp device through the manual work and carries out the contact pressure adjustment. The measurement, adjustment, measurement, and adjustment are repeated. The manual measurement and adjustment are not real-time, on one hand, abnormal conditions cannot be adjusted in time to change operation faults in real time, on the other hand, the manual measurement has large errors and consumes a large amount of manpower and material resources, and meanwhile, a maintainer climbs the top of the rail car for overhead operation and risks of overhead operation and electric shock exist.

Disclosure of Invention

The invention aims to provide a railway train pantograph device capable of automatically adjusting contact pressure of a pantograph-catenary, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a rail train pantograph device capable of automatically adjusting contact pressure of a pantograph-catenary comprises a base, wherein a driving mechanism, a sliding mechanism and a lifting mechanism are arranged above the base;

the driving mechanism comprises a motor plate, a servo motor and a lead screw, the motor plate is fixedly connected to the top of the base, the servo motor is fixedly connected to one side of the motor plate, one end of an output shaft of the servo motor movably penetrates through the surface of the motor plate, one end of the output shaft of the servo motor is fixedly connected with one end of the lead screw through a coupler, one end, away from the servo motor, of the lead screw is rotatably connected with a second bearing seat, the surface of the lead screw is in threaded connection with a lead screw nut, the surface of the lead screw nut is fixedly connected with a first spring, the first spring is sleeved on the surface of the lead screw, one end, away from the lead screw nut, of the first spring is fixedly connected with a bearing, and the outer ring of the bearing is fixedly connected with a first bearing seat;

slide mechanism includes the slide, slide fixed connection is in the top of base, the spout has been seted up at the top of slide, the inside sliding connection of spout has the slider, the top fixedly connected with connecting rod of slider, the top of connecting rod and the bottom fixed connection of primary shaft bearing.

As further preferable in the present technical solution: the lifting mechanism comprises two lifting rod supports, a connecting shaft is fixedly connected between the two lifting rod supports, a sleeve is sleeved on the surface of the connecting shaft in a rotating mode, a lifting rod and a connecting block are fixedly connected to the surface of the sleeve, and a steel wire rope is connected between the connecting block and the first bearing seat.

As further preferable in the present technical solution: ball sockets are formed in one side, opposite to the first bearing seat, of the connecting block, steel balls are connected in the two ball sockets in a ball-and-ball mode, and the two steel balls are fixedly connected through steel wire ropes.

As further preferable in the present technical solution: the top of lifter is through two collection slide support of fixed block fixedly connected with, two the slot has all been seted up at collection slide support's top, the activity is pegged graft in the slot has the slide base, two fixedly connected with second springs between the inboard bottom of slot and the bottom of slide base, the inboard bottom fixedly connected with pressure sensors of slot.

As further preferable in the present technical solution: two the top fixedly connected with pantograph bow of slide base, the top fixedly connected with carbon slide of pantograph bow.

As further preferable in the present technical solution: and a through hole is formed in the surface of the second bearing seat, and the steel wire rope movably penetrates through the through hole.

As further preferable in the present technical solution: one end, close to the bearing, of the first spring is fixedly connected with an inner ring of the bearing, the bearing sleeve is arranged on the surface of the screw rod, and the diameter of the inner ring of the bearing is larger than that of the screw rod.

As further preferable in the present technical solution: the bottom of base fixedly connected with four insulators.

Compared with the prior art, the invention has the beneficial effects that: when the contact pressure between pantograph nets changes due to vibration in the running process of a train, height change of a track bed, height change of the catenary, equipment abrasion caused by long-term running and the like, the pressure sensor senses the contact pressure between the catenary and the carbon sliding plate, and the servo motor operates to adjust the contact pressure between the contact net and the carbon sliding plate, so that the possibility that the service life of a pantograph is influenced due to excessive abrasion of the carbon sliding plate caused by excessive contact pressure is effectively avoided, and the possibility that accidents such as arc discharge, net scraping and the like are caused due to separation of the carbon sliding plate and the catenary caused by excessively small contact pressure can be effectively avoided;

contact pressure is adjusted in time through actuating mechanism, need not stop after the maintainer climb the rail train roof and carry out the manual measurement and adjust the contact pressure between the bow net, save the cost of labor, protection maintainer's personal safety has reduced the loaded down with trivial details nature of measuring with the adjustment.

The invention can realize the purpose of automatically adjusting the contact pressure of the rail train in real time in the running process. The contact pressure of the train between the pantograph and catenary in the operation process is guaranteed to be always in a reasonable range, the condition of pantograph current collection faults caused by abnormal contact pressure due to the fact that the roadbed is not smooth and the height of the contact catenary changes in the operation process is reduced, abnormal abrasion of pantograph parts and even the condition of pantograph head breakage caused by the fact that the contact pressure is too large in the operation process are avoided, the operation accidents of the pantograph and catenary are reduced, the safety is high, and the applicability is strong.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic top sectional view of the lifter bar support of the present invention;

FIG. 4 is a schematic view of a lead screw structure according to the present invention;

FIG. 5 is a side view of the first bearing seat of the present invention;

FIG. 6 is a schematic view of the structure of area A in FIG. 2 according to the present invention;

FIG. 7 is a schematic view of the structure of region B in FIG. 2 according to the present invention;

FIG. 8 is a schematic view of the structure of the current collector sled support of the present invention;

FIG. 9 is a schematic cross-sectional view of the region C in FIG. 8 according to the present invention.

In the figure: 1. a base; 2. an insulator; 3. a slide base; 4. a chute; 5. a slider; 6. a connecting rod; 7. a first bearing housing; 8. a bearing; 9. a motor plate; 10. a servo motor; 11. a lifter support; 12. a connecting shaft; 13. a sleeve; 14. a lifting rod; 15. a current receiving slide plate bracket; 16. a second bearing housing; 17. a screw rod; 18. a first spring; 19. a wire rope; 20. a second spring; 21. a pressure sensor; 22. a skateboard base; 23. a pantograph head; 24. connecting blocks; 25. a steel ball; 26. a through hole; 27. a ball socket; 28. a feed screw nut; 29. a slot; 30. a carbon slide plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-9, the present invention provides a technical solution: a rail train pantograph device capable of automatically adjusting contact pressure of a pantograph-catenary comprises a base 1, wherein a driving mechanism, a sliding mechanism and a lifting mechanism are arranged above the base 1;

the driving mechanism comprises a motor plate 9, a servo motor 10 and a screw rod 17, the motor plate 9 is fixedly connected to the top of the base 1, the servo motor 10 is fixedly connected to one side of the motor plate 9, one end of an output shaft of the servo motor 10 movably penetrates through the surface of the motor plate 9, one end of the output shaft of the servo motor 10 is fixedly connected with one end of the screw rod 17 through a coupler, the servo motor 10 is a direct current driving motor which is provided with a speed reducer and can rotate forwards and backwards, the direct current driving motor has a power-off self-locking function, the servo motor 10 operates to drive the screw rod 17 to rotate, one end of the screw rod 17 far away from the servo motor 10 is rotatably connected with a second bearing seat 16, the surface of the screw rod 17 is in threaded connection with a screw rod nut 28, a first spring 18 is fixedly connected to the surface of the screw rod nut 28, the first spring 18 is sleeved on the surface of the screw rod 17, one end of the first spring 18 far away from the screw rod nut 28 is fixedly connected with a bearing 8, and the outer ring of the bearing 8 is fixedly connected with a first bearing seat 7, when the screw rod 17 rotates, the screw rod nut 28 moves on the surface of the screw rod 17, the screw rod nut 28 moves to pull the first spring 18, the first spring 18 pulls the first bearing seat 7 to pull the steel wire rope 19 to move towards the moving direction of the screw rod nut 28, the sliding mechanism comprises a sliding seat 3, the sliding seat 3 is fixedly connected to the top of the base 1, the top of the sliding seat 3 is provided with a sliding groove 4, the inside of the sliding groove 4 is connected with a sliding block 5 in a sliding manner, the top of the sliding block 5 is fixedly connected with a connecting rod 6, the top of the connecting rod 6 is fixedly connected with the bottom of the first bearing seat 7, the sliding mechanism has a good guiding effect on the first bearing seat, one end, close to the bearing 8, of the first spring 18 is fixedly connected with an inner ring of the bearing 8, the bearing 8 is sleeved on the surface of the screw rod 17, the diameter of the inner ring of the bearing 8 is larger than that of the screw rod 17, the first spring 18 is fixedly connected with the inner ring of the bearing 8, and the first bearing seat 7 can be pulled by the first spring 18, meanwhile, the first spring 18 is rotatably connected through the bearing 8, so that the possibility that the first spring 18 is damaged due to the fact that the first spring 18 is screwed when the screw rod nut 28 is suddenly jammed in the moving process of the screw rod 17 in the moment can be effectively prevented, and in the process that the servo motor 10 suddenly runs, the first spring 18 can effectively play a buffering effect and effectively prevent the steel wire rope 19 from being damaged due to the fact that the instant tension is too violent.

The lifting mechanism comprises two lifting rod supports 11, a connecting shaft 12 is fixedly connected between the two lifting rod supports 11, a sleeve 13 is sleeved on the surface of the connecting shaft 12 in a rotating mode, a lifting rod 14 and a connecting block 24 are fixedly connected on the surface of the sleeve 13, a steel wire rope 19 is connected between the connecting block 24 and a first bearing seat 7, a through hole 26 is formed in the surface of a second bearing seat 16, the steel wire rope 19 movably penetrates through the through hole 26, the steel wire rope 19 pulls the sleeve 13 to rotate on the surface of the connecting shaft 12 under the traction of the first bearing seat 7, the lifting rod 14 can drive a current-collecting sliding plate support 15 and a pantograph head 23 to lift when the sleeve 13 rotates, the effect of approaching or leaving away from a power grid is achieved, the top of the lifting rod 14 is fixedly connected with the two current-collecting sliding plate supports 15 through a fixing block, slots 29 are formed in the tops of the two current-collecting sliding plate supports 15, and a sliding plate base 22 is movably inserted in the slots 29, the two second springs 20 are fixedly connected between the bottom of the inner side of the slot 29 and the bottom of the sliding plate base 22, the pressure sensor 21 is fixedly connected with the bottom of the inner side of the slot 29, the pantograph heads 23 are fixedly connected with the tops of the two sliding plate bases 22, the carbon sliding plate 30 is fixedly connected with the top of the pantograph head 23, the carbon sliding plate 30 has good conductivity and is used for contacting pantograph nets of a train in the running process, when the carbon sliding plate 30 is subjected to the contact pressure of the contact nets, the two second springs 20 deform, the pressure sensor 21 senses the contact pressure between the pantograph and the contact nets and transmits the contact pressure to a control system of the pantograph of the train, the control system of the pantograph of the train drives the lead screw nut 28 to move by controlling the operation of the servo motor 10, the contact force between the pantograph and the contact nets of the train is adjusted, and when the pantograph has no contact with the contact or the contact pressure is too small, the pressure sensor 21 also transmits the sensed data to a control system of a pantograph of the train, the control system of the pantograph of the train or controls the servo motor 10 to adjust the contact pressure between the carbon sliding plate 30 and the overhead contact system according to the received signal, when the contact pressure between the pantograph and the overhead contact system is changed due to vibration in the running process of the train, height change of a track bed, height change of the overhead contact system, equipment abrasion caused by long-term running and the like, the contact pressure between the overhead contact system and the carbon sliding plate 30 is sensed through the pressure sensor 21, the contact pressure between the overhead contact system and the carbon sliding plate 30 is adjusted through the operation of the servo motor 10, the possibility that the service life of the pantograph is influenced due to the excessive increase of abrasion of the carbon sliding plate 30 caused by overlarge contact pressure is effectively avoided, and the separation of the carbon sliding plate 30 from the overhead contact system caused by the undersize contact pressure is effectively avoided, causing the possibility of accidents such as arc drawing, net scraping and the like.

Ball sockets 27 are formed in one side, opposite to the first bearing seat 7, of the connecting block 24, steel balls 25 are connected in the two ball sockets 27 in a ball-and-ball mode, the two steel balls 25 are fixedly connected through a steel wire rope 19, the two ends of the steel wire rope 19 are connected with the connecting block 24 and the first bearing seat 7 through the ball sockets 27 and the steel balls 25, free rotation of the two ends of the steel wire rope 19 can be achieved, the steel wire rope moves freely, and stress is more uniform.

Four insulators 2 of base 1's bottom fixedly connected with, through four insulators 2 with base 1 fixed connection in the top of train, can prevent effectively that the electric current of train pantograph device from passing for the train body.

When the working principle or the structural principle is used, when the contact pressure between pantograph and catenary changes due to vibration in the running process of a train, height change of a track bed, height change of a catenary, equipment abrasion caused by long-term running and the like, the pressure sensor 21 senses the contact pressure between the catenary and the carbon sliding plate 30, the servo motor 10 operates to adjust the contact pressure between the contact net and the carbon sliding plate 30, the servo motor 10 operates to drive the screw rod 17 to rotate, the screw rod nut 28 moves on the surface of the screw rod 17 when the screw rod 17 rotates, the screw rod nut 28 moves to pull the first spring 18, the first spring 18 pulls the first bearing seat 7 to pull the steel wire rope 19 to move towards the direction of the screw rod nut 28, the sleeve 13 is pulled to rotate on the surface of the connecting shaft 12 under the traction of the first bearing seat 7, and the lifting rod 14 can drive the current-receiving sliding plate bracket 15 and the pantograph bow 23 to ascend and descend when the sleeve 13 rotates, reach the effect of being close to or keeping away from the electric wire netting, effectively avoid contact pressure too big to lead to carbon slide 30 wearing and tearing excessively to increase and influence the possibility of pantograph's life, can effectively avoid simultaneously because of contact pressure undersize, and the carbon slide 30 that leads to separates with the contact net, arouses the possibility of drawing the arc, scraping accidents such as net.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a but rail train pantograph device of automatically regulated bow net contact pressure, includes base (1), its characterized in that: a driving mechanism, a sliding mechanism and a lifting mechanism are arranged above the base (1);

the driving mechanism comprises a motor plate (9), a servo motor (10) and a screw rod (17), the motor plate (9) is fixedly connected to the top of the base (1), the servo motor (10) is fixedly connected to one side of the motor plate (9), one end of an output shaft of the servo motor (10) is movably penetrated through the surface of the motor plate (9), one end of the output shaft of the servo motor (10) is fixedly connected with one end of the screw rod (17) through a coupler, one end, far away from the servo motor (10), of the screw rod (17) is rotatably connected with a second bearing seat (16), a screw nut (28) is in threaded connection with the surface of the screw rod (17), a first spring (18) is fixedly connected to the surface of the screw rod (28), the first spring (18) is sleeved on the surface of the screw rod (17), and one end, far away from the screw nut (28), of the first spring (18) is fixedly connected with a bearing (8), the outer ring of the bearing (8) is fixedly connected with a first bearing seat (7);

slide mechanism includes slide (3), slide (3) fixed connection is in the top of base (1), spout (4) have been seted up at the top of slide (3), the inside sliding connection of spout (4) has slider (5), the top fixedly connected with connecting rod (6) of slider (5), the bottom fixed connection of the top of connecting rod (6) and primary shaft bearing (7).

2. The pantograph device of claim 1, wherein the pantograph contact pressure is automatically adjusted by a rail train pantograph device comprising: the lifting mechanism comprises two lifting rod supports (11) and two connecting shafts (12) fixedly connected between the lifting rod supports (11), the surfaces of the connecting shafts (12) are rotatably sleeved with sleeves (13), the surfaces of the sleeves (13) are fixedly connected with lifting rods (14) and connecting blocks (24), and steel wire ropes (19) are connected between the connecting blocks (24) and the first bearing seats (7).

3. The pantograph device of claim 2, wherein the pantograph contact pressure is automatically adjusted by a rail train pantograph device comprising: ball sockets (27) are respectively formed in one side, opposite to the first bearing seat (7), of the connecting block (24), steel balls (25) are respectively connected into the ball sockets (27) in a ball joint mode, and the two steel balls (25) are fixedly connected through a steel wire rope (19).

4. The railroad train pantograph device capable of automatically adjusting pantograph contact pressure according to claim 2, wherein: the top of lifter (14) is through two collection slide support (15) of fixed block fixedly connected with, two slot (29) have all been seted up at the top of collection slide support (15), slide base (22) have been pegged graft in slot (29) internalization, two second springs (20) of fixedly connected with between the inboard bottom of slot (29) and the bottom of slide base (22), inboard bottom fixedly connected with pressure sensors (21) of slot (29).

5. The railroad train pantograph device capable of automatically adjusting pantograph contact pressure according to claim 4, wherein: two the top fixedly connected with pantograph bow (23) of slide base (22), the top fixedly connected with carbon slide (30) of pantograph bow (23).

6. The railroad train pantograph device capable of automatically adjusting pantograph contact pressure according to claim 2, wherein: a through hole (26) is formed in the surface of the second bearing seat (16), and the steel wire rope (19) movably penetrates through the through hole (26).

7. The railroad train pantograph device capable of automatically adjusting pantograph contact pressure according to claim 1, wherein: one end, close to the bearing (8), of the first spring (18) is fixedly connected with an inner ring of the bearing (8), the bearing (8) is sleeved on the surface of the screw rod (17), and the diameter of the inner ring of the bearing (8) is larger than that of the screw rod (17).

8. The railroad train pantograph device capable of automatically adjusting pantograph contact pressure according to claim 1, wherein: the bottom of the base (1) is fixedly connected with four insulators (2).