阅读说明：本技术 一种受电弓主动控制装置及其控制方法 (Active control device and control method for pantograph ) 是由 王江文 梅桂明 张卫华 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种受电弓主动控制装置及其控制方法,属于电气化铁路受电弓-接触网系统技术领域。中心导杆下端穿过移动质量块的通孔和作动器套筒式伸缩杆,进入作动器底座并与其下端固定；移动质量块的一端自由,另一端与作动器套筒式伸缩杆上端固结；作动器套筒式伸缩杆下端与作动器底座连接；作动器底座下端与上框架靠近尾部的横杆固结,所述受电弓底架设有控制器,作动器底座的信号输入端通过信号线缆与控制器的输出端连接,信号采集端为控制器的信号输入端。当移动质量块向上框架顶部横杆移动时,上框架整体结构重心向靠近受电弓弓头方向移动,受电弓抬升力下降；移动质量块向上框架靠近尾部的横杆移动时,受电弓抬升力上升。(The invention discloses a pantograph active control device and a control method thereof, and belongs to the technical field of electrified railway pantograph-overhead line system. The lower end of the central guide rod penetrates through the through hole of the movable mass block and the actuator sleeve type telescopic rod, enters the actuator base and is fixed with the lower end of the actuator base; one end of the movable mass block is free, and the other end of the movable mass block is fixedly connected with the upper end of the sleeve type telescopic rod of the actuator; the lower end of the telescopic rod of the actuator is connected with the actuator base; the lower end of the actuator base is fixedly connected with the cross rod, close to the tail, of the upper frame, the pantograph bottom frame is provided with a controller, the signal input end of the actuator base is connected with the output end of the controller through a signal cable, and the signal acquisition end is the signal input end of the controller. When the movable mass block moves towards the cross bar at the top of the upper frame, the gravity center of the integral structure of the upper frame moves towards the direction close to the head of the pantograph, and the lifting force of the pantograph descends; when the movable mass block moves towards the cross rod of the upper frame close to the tail part, the lifting force of the pantograph rises.)

1. An active control device for a pantograph comprises a pantograph base (11), a lower arm rod (12) of the pantograph, a top cross rod (14) of an upper frame and a carbon sliding plate (15), wherein the upper end of the lower arm rod (12) is hinged with a hinged support at the tail of an upper frame (2), the lower end of the lower arm rod is of an inverted T-shaped structure, and two ends of an inverted T-shaped crosspiece are hinged with lugs at the middle front part of longitudinal crosspieces at two sides of the pantograph base (11); the upper end of the pull rod (7) is hinged with a hinged support at the rear end part of the upper frame (2), and the lower end of the pull rod is hinged with a hinged support at the middle part of a rear crosspiece of the pantograph base (11); the method is characterized in that: the upper end of the central guide rod (1) is fixedly connected with the middle position of a cross rod (14) at the top of the upper frame (2); the lower end of the central guide rod (1) penetrates through the through hole of the movable mass block (3) and the actuator sleeve type telescopic rod (4), enters the actuator base (5) and is fixed with the lower end of the actuator base; one end of the movable mass block (3) is free, and the other end of the movable mass block is fixedly connected with the upper end of the actuator sleeve type telescopic rod (4); the lower end of the actuator sleeve type telescopic rod (4) is connected with an actuator base (5); the lower end of the actuator base (5) is fixedly connected with a cross rod (6) of the upper frame close to the tail portion, the pantograph bottom frame (11) is provided with a controller (9), the signal input end of the actuator base (5) is connected with the output end of the controller (9) through a signal cable (8), and the signal acquisition end (10) is the signal input end of the controller (9).

2. The active pantograph control device of claim 1, wherein: the central lines of the central guide rod (1), the movable mass block (3), the actuator sleeve type telescopic rod (4) and the actuator base (5) are collinear, and the central lines are located in a central symmetrical plane of the pantograph.

3. The active pantograph control device of claim 1, wherein: the signal cable (8) is wired to the pantograph underframe (11) along the pantograph pull rod (7) or the lower arm rod (12) of the pantograph and then connected with the connection controller (9).

4. The active pantograph control device of claim 1, wherein: the mass of the moving mass block (3) is larger than that of the central guide rod (1), the actuator telescopic rod (4) and the actuator base (5).

5. The active pantograph control device of claim 1, wherein: the actuator is an electric actuator.

6. When a moving mass block (3) moves towards a cross bar (14) at the top of an upper frame, the gravity center of the integral structure of the upper frame moves towards the direction close to the head of a pantograph, and the lifting force of the pantograph descends; when the movable mass block (3) moves towards the cross rod (6) of the upper frame close to the tail part, the gravity center of the integral structure of the upper frame moves towards the tail part of the pantograph, and the lifting force of the pantograph rises.

7. The active control method of a pantograph according to claim 6, wherein: the electric actuator control target is the amount of dynamic displacement of the moving mass (3) mass.

8. The active control method of a pantograph according to claim 6, wherein the signal collector collects the following signals as controller input signals: one or more signals of train running direction, train speed, train traction braking acceleration, air pressure of a pantograph lifting mechanism, spring travel of the pantograph lifting mechanism and sliding plate supporting force.

Technical Field

The invention belongs to the technical field of active control of electrified railway pantograph-contact network systems.

Background

In a high-speed electrified railway, a pantograph arranged on the roof of a train and a contact network erected beside a track line realize the transmission of electric energy through sliding contact, and the current collection quality of a pantograph system is reflected by the pantograph head stress environment and the dynamic contact force between the contact network and the pantograph. The commonly adopted single-arm pantograph has two working modes of opening and closing, and the average lifting force of the pantograph in two running directions is different and deviates from the ideal pantograph static lifting force range. The dynamic contact force of the bow net must be controlled in a reasonable range, the too large dynamic contact force can increase the high-speed operation impact force of the bow net and the abrasion of the bow net contact pair, the dynamic contact force is too small, the enough contact area cannot be ensured, the electric energy bearing capacity of the bow net contact pair is reduced, and undesirable phenomena such as arcing ablation contact pair surface and the like occur. In order to solve the problems, research is mostly carried out on controlling the dynamic interaction process of the pantograph-catenary from the perspective of active control of the pantograph, so that the good current receiving quality is ensured, the dynamic impact of the pantograph-catenary is reduced, and the abrasion of a sliding plate and a contact line is reduced.

At present, the method commonly used at home and abroad is to Control the Pantograph frame structure lifting force through a Pantograph lifting mechanism to Control the Pantograph-catenary dynamic interaction process, and the method comprises the documents of air spring High-Speed Pantograph-based air pressure servo Active Control research, Pantograph-catenary optimal contact pressure load decision and Pantograph Active Control research, Chinese standard motor train unit Pantograph Active Control unit design, pneumatic system-based Pantograph Active Control test device research, Active Control contact for High-Speed Pantograph-based on multi-body Pantograph model, Active Control of High-Speed Pantograph and the like. However, when the control mode is applied to the actual pantograph-catenary current receiving process, the control time is delayed, the action response is slow, the sensitivity is low, the high-speed running requirement of the train cannot be met, and the power consumption of the controller is large, so that a good dynamic contact force control effect cannot be achieved.

Disclosure of Invention

The invention aims to provide a pantograph active control device which can effectively solve the technical problems of optimizing the dynamic interaction performance of a pantograph-catenary system in the field of rail transit, reducing pantograph-catenary impact and improving pantograph-catenary current collection quality.

The invention also aims to provide a pantograph active control method, which can effectively solve the technical problems of optimizing the dynamic interaction performance of a pantograph-catenary system in the field of rail transit, reducing pantograph-catenary impact and improving pantograph-catenary current collection quality.

The purpose of the invention is realized by the following technical scheme: an active control device for a pantograph comprises a pantograph base, a lower arm rod of the pantograph, a top cross rod of an upper frame and a carbon sliding plate, wherein the upper end of the lower arm rod is hinged with a hinged support at the tail part of the upper frame, the lower end of the lower arm rod is of an inverted T-shaped structure, and two ends of an inverted T-shaped crosspiece are hinged with lugs at the middle front part of longitudinal crosspieces at two sides of the pantograph base; the upper end of the pull rod is hinged with a hinged support at the rear end part of the upper frame, and the lower end of the pull rod is hinged with a hinged support in the middle of a rear crosspiece of the pantograph base; the upper end of the central guide rod is fixedly connected with the middle position of a cross rod at the top of the upper frame; the lower end of the central guide rod penetrates through the through hole of the movable mass block and the actuator sleeve type telescopic rod, enters the actuator base and is fixed with the lower end of the actuator base; one end of the movable mass block is free, and the other end of the movable mass block is fixedly connected with the upper end of the sleeve type telescopic rod of the actuator; the lower end of the telescopic rod of the actuator is connected with the actuator base; the lower end of the actuator base is fixedly connected with the cross rod, close to the tail, of the upper frame, the pantograph bottom frame is provided with a controller, the signal input end of the actuator base is connected with the output end of the controller through a signal cable, and the signal acquisition end is the signal input end of the controller.

The central guide rod, the movable mass block, the actuator sleeve type telescopic rod and the actuator base are collinear, and the central line is located in a central symmetrical plane of the pantograph.

The signal cable is wired to the pantograph underframe along the pantograph pull rod or the lower arm rod of the pantograph and then connected with the connection controller.

the mass of the moving mass block is larger than that of the central guide rod, the actuator sleeve type telescopic rod and the actuator base.

The actuator is an electric actuator.

The other purpose of the invention is realized by the following technical scheme: when a moving mass block moves towards a cross bar at the top of an upper frame, the gravity center of the integral structure of the upper frame moves towards the direction close to the head of a pantograph, and the lifting force of the pantograph descends; when the movable mass block moves towards the cross rod of the upper frame close to the tail part, the gravity center of the integral structure of the upper frame moves towards the tail part of the pantograph, and the lifting force of the pantograph rises.

The electric actuator control target is the amount of dynamic displacement of the moving mass.

The signal collector collects the following signals as input signals of the controller: one or more signals of train running direction, train speed, train traction braking acceleration, air pressure of a pantograph lifting mechanism, spring travel of the pantograph lifting mechanism and sliding plate supporting force.

The working principle of the invention is as follows:

(1) The signal acquisition end collects signals of train running direction, train speed, train traction braking acceleration, pantograph lifting mechanism air pressure, pantograph lifting mechanism spring travel, sliding plate supporting force, sliding plate acceleration, sliding plate displacement and the like, and then transmits the signals to the controller; the controller combines the current information to give the actuator control displacement.

(2) The actuator telescopic rod executes a displacement command given by the controller and moves along the central guide rod together with the moving mass block; the movement of the movable mass block and the central guide rod enables the integral gravity center of the upper frame to shift longitudinally: when moving towards the head of the pantograph, the gravity center shift reduces the total lifting force of the pantograph, and when moving towards the tail of the pantograph, the gravity center shift increases the total lifting force of the pantograph. Based on the method, the dynamic control of the pantograph lifting force in the pantograph-catenary dynamic current collection process is realized, the pantograph-catenary impact force is reduced, and the pantograph-catenary contact minimum value is increased, so that the pantograph-catenary dynamic interaction performance is optimized.

Compared with the prior art, the advantages or effects are as follows:

(1) The control mode is simple. Only a single displacement is controlled, and the method is easy to realize; the mode of controlling the displacement of the movable mass block has small power of the actuator system and sensitive telescopic action.

(2) The adaptability range is wide. The method can be suitable for high-speed current collection control of the main line pantograph and large-current collection control of the urban rail pantograph.

(3) the function is powerful. There are three modes of operation: a slow motion mode is used for correcting the running direction of an opening and closing port of a pantograph, pneumatic load and the average lifting force of the pantograph at the acceleration and deceleration stages of a train; a fast-acting mode for reducing the bow net dynamic contact force maximum and increasing the minimum; when the pantograph is in a pantograph descending state, the moving mass block moves towards the top of the upper frame/the upper arm rod, the pantograph descending holding force can be increased, and the risk that the pantograph is lifted by pneumatic force in the pantograph descending state is reduced.

Drawings

Fig. 1 is a schematic diagram of an upper frame based pantograph active control system.

Detailed Description

The present invention is further illustrated by the following examples, which are intended to be illustrative only and are not intended to be limiting.

An active control device for a pantograph comprises a pantograph base 11, a lower arm rod 12 of the pantograph, a top cross rod 14 of an upper frame and a carbon sliding plate 15, wherein the upper end of the lower arm rod 12 is hinged with a hinged support at the tail part of an upper frame 2, the lower end of the lower arm rod is of an inverted T-shaped structure, and two ends of an inverted T-shaped crosspiece are hinged with lugs at the middle front part of longitudinal crosspieces at two sides of the pantograph base 11; the upper end of the pull rod 7 is hinged with a hinged support at the rear end part of the upper frame 2, and the lower end of the pull rod is hinged with a hinged support in the middle of a rear crosspiece of the pantograph base 11; the method is characterized in that: the upper end of the central guide rod 1 is fixedly connected with the middle position of a cross rod 14 at the top of the upper frame 2; the lower end of the central guide rod 1 passes through the through hole of the movable mass block 3 and the actuator sleeve type telescopic rod 4, enters the actuator base 5 and is fixed with the lower end of the actuator base; one end of the movable mass block 3 is free, and the other end of the movable mass block is fixedly connected with the upper end of the sleeve type telescopic rod 4 of the actuator; the lower end of the actuator sleeve type telescopic rod 4 is connected with an actuator base 5; the lower end of the actuator base 5 is fixedly connected with the cross rod 6 of the upper frame close to the tail, the pantograph bottom frame 11 is provided with a controller 9, the signal input end of the actuator base 5 is connected with the output end of the controller 9 through a signal cable 8, and the signal acquisition end 10 is the signal input end of the controller 9.

The central guide rod 1, the movable mass block 3, the actuator sleeve type telescopic rod 4 and the actuator base 5 are collinear, and the central lines are located in the central symmetrical plane of the pantograph.

The signal cable 8 is routed to the pantograph base frame 11 along the pantograph pull rod 7 or the lower pantograph arm 12 and then connected to the connection controller 9.

The mass of the moving mass block 3 is larger than that of the central guide rod 1, the telescopic rod 4 of the actuator and the base 5 of the actuator.

The actuator is an electric actuator.

When a moving mass block 3 moves towards a cross rod 14 at the top of an upper frame, the gravity center of the integral structure of the upper frame moves towards the direction close to the head of a pantograph, and the lifting force of the pantograph descends; when the movable mass block 3 moves towards the cross rod 6 of the upper frame close to the tail part, the gravity center of the integral structure of the upper frame moves towards the tail part of the pantograph, and the lifting force of the pantograph rises.

The electric actuator control target is the amount of dynamic displacement of the moving mass 3 mass.

The signal collector 10 collects the following signals as input signals to the controller 9: one or more signals of train running direction, train speed, train traction braking acceleration, air pressure of a pantograph lifting mechanism, spring travel of the pantograph lifting mechanism and sliding plate supporting force.

The signal cable 8 is routed to the pantograph underframe 11 along the pantograph pull rod 7 or along the lower arm rod 12 of the pantograph and then is connected with the controller 9; the controller 9 and the signal acquisition end 10 are installed on the pantograph base 11 or on the roof of the vehicle, and need to be indirectly connected and fixed with the roof of the vehicle through an insulator when being installed on the roof of the vehicle.