CN112960010B

CN112960010B - Electromagnetic speed reducer for train

Info

Publication number: CN112960010B
Application number: CN202110285426.6A
Authority: CN
Inventors: 陈钇行; 钟倩文; 彭乐乐; 关博; 郑树彬; 文静
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2022-08-26
Anticipated expiration: 2041-03-17
Also published as: CN112960010A

Abstract

The invention relates to an electromagnetic deceleration device for a train, which is used for decelerating and stopping when a high-speed rail enters a station, and the deceleration device comprises: the brake landing gear is rigidly connected to the bottom of the train, and the electromagnetic guide rail is used for generating magnetic field acting force with the brake support. Compared with the prior train speed reducer, the invention has the following advantages: the train stopping time is greatly shortened, the occupied vehicle space is small, the braking efficiency is high and the like.

Description

Electromagnetic speed reducer for train

Technical Field

The invention relates to the technical field of high-speed rail trains, in particular to an electromagnetic speed reducer for a train.

Background

The improvement of the running efficiency of high-speed rail is always the key point of attention, taking jinghu high-speed rail as an example, the initial designed traffic is running 180 pairs of high-speed trains with the speed of 350-380 kilometers every day, and the passengers are transported for 1.6 hundred million people in two ways in one year. After the speed is reduced, only 90 pairs of trains are driven each day, wherein more than 20 pairs of trains are trains with the speed of 250 kilometers per hour. Although 3 years achieved profitability, the effect was not as expected. After the speed is increased, the transport capacity is improved in the aspect of railways, the people flow and logistics in the area along the railway are accelerated, and the great driving effect is played to the economic development of China. Along with the recovery of the high-speed rail, the numerical value of X in the X hour economic circle manufactured by the high-speed rail in various places is smaller and smaller, the construction of the urban circle and the economic circle can be promoted, and the method plays an important role in improving the same urbanization level and reasonably allocating resources. In addition, after the speed of the high-speed rail is increased, the energy consumption and the service cost of the railway are increased, but compared with the increase of the passenger flow, the benefit is obviously improved, and the method is greatly beneficial to the self development of the railway.

However, the speed of the high-speed train is increased to improve the running efficiency of the train at the top today, but the reduction of the station-entering time of the high-speed train to improve the running efficiency of the train is the current need and the certain development trend. Since this method consumes kinetic energy converted into electric energy, the amount of kinetic energy consumed for parking in this manner is reduced as the vehicle speed decreases, and thus the braking efficiency is to be improved. It is assumed that if the braking is started 30 minutes before a train enters a station, the operation efficiency of the Chinese railway network is greatly increased, and the national transportation business is greatly benefited if the braking time is shortened to 15 minutes or even shorter. Therefore, a device which consumes stable kinetic energy of the train and has high efficiency is urgently needed to solve the problem.

Aiming at the situation, the invention provides the train electromagnetic speed reducer after mechanical calculation and finite element simulation analysis. The invention better accords with energy and mechanical characteristics, greatly improves and improves the braking work of the train, and can completely modify the existing train for use, thereby realizing the low-cost modification of the train and realizing the function of the device.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an electromagnetic train speed reducer.

The purpose of the invention can be realized by the following technical scheme:

an electromagnetic train speed reduction device, the device comprising:

the braking undercarriage is rigidly connected to the bottom of the train and is used for decelerating and stopping when a high-speed rail enters the station;

and the electromagnetic guide rail is used for generating magnetic field acting force for decelerating and stopping the high-speed rail in cooperation with the braking undercarriage.

Further, the brake landing gear comprises an upper bracket and a lower bracket which are connected with each other, the upper bracket is connected to the bottom of the train, and the bottom of the lower bracket is connected with the armature.

Furthermore, a middle supporting block is arranged on the lower support and connected with one end of the front folding frame.

Furthermore, the other end of the front folding frame is respectively connected with the hydraulic rod and the rear folding frame.

Furthermore, the hydraulic rod and the rear folding framework are connected with the upper bracket.

Furthermore, a frame body used for accommodating and placing the lower support is arranged on the upper support.

Furthermore, the electromagnetic guide rail is provided with a first guide rail wall and a second guide rail wall, the ground clearance of the first guide rail wall and the second guide rail wall relative to the ground is h, and h is greater than 0.

Furthermore, the bottom of the electromagnetic guide rail is provided with a guide rail bottom protrusion for preventing gravel accumulation.

Furthermore, the cross section of the bottom end bulge of the guide rail is triangular.

Furthermore, the shape of the frame body is rectangular.

Compared with the prior art, the invention has the following advantages:

the invention relates to a train braking force adjusting device, which utilizes current to generate electromagnetic force, wherein the electromagnetic force acts as train braking force, so that the magnitude of the train braking force is adjusted by controlling the magnitude of the current. Thereby achieving the aim of controlling the braking of the train.

The invention can adjust the size of the upper bracket according to different train models, thereby modifying the train very conveniently and effectively.

Thirdly, the invention greatly shortens the stop efficiency of the train, thereby improving the running efficiency of the train.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic view of a brake landing gear loading structure.

Figure 2 is a schematic view of a braking landing gear configuration.

Fig. 3 is a schematic diagram of the present invention.

Fig. 4 is a schematic diagram of a track structure.

Fig. 5 is a schematic view of the structure of the guide rail.

Fig. 6 is a three-view of the rail structure.

In the figure, 1 is an upper bracket, 2 is a middle supporting block, 3 is a lower bracket, 4 is an armature, 5 is a front folding frame, 6 is a rear folding frame, 7 is a hydraulic rod, 8 is a first rail, 9 is a second rail, 10 is an electromagnetic guide rail, 11 is a guide rail bottom end projection, 12 is a first guide rail wall, and 13 is a second guide rail wall.

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 some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 4, the invention relates to an electromagnetic deceleration device for a train, which is used for decelerating and stopping when a high-speed rail enters a station, and the deceleration device comprises: a brake undercarriage for rigid attachment to the bottom of a train, as shown in figure 2, and an electromagnetic guide rail 10 for generating a magnetic field force with the brake spider.

The first type of electromagnetic train deceleration device is used for the inbound braking of high-speed trains, and consists of two major parts, namely a braking landing gear rigidly connected to the bottom of the train, as shown in fig. 2, and an electromagnetic guide rail 10 laid in the middle of the rail.

Firstly, the landing gear is braked: is divided into an upper bracket 1 and a lower bracket 3. The upper support 1 is directly and rigidly connected to the bottom of the train, and as shown in fig. 1, the lower support 3 is provided with an armature 4 at the lower end. When a train enters the station, a hydraulic rod 7 in the brake landing gear unfolds the front and

rear folding frameworks

5 and 6 so as to push out the lower support 3, and the lower armature 4 of the lower support 3 penetrates into the electromagnetic guide rail 10.

As shown in fig. 3: the train brake is realized by adopting the electromagnetic reverse thrust generated by the electromagnetic action principle. Because the electromagnetic driving force is in direct proportion to the square of the current, strong current I can be input into the electromagnetic guide rail in the station, and enough thrust can be generated in the electromagnetic guide rail, so that the train entering the station obtains high braking force, and the high-speed train is ensured to be quickly braked. The basic principle is shown in the figure. When the switch S is switched on, the power supply G forms a current loop through the guide rail, the armature and the guide rail; the current I generates a magnetic field B which generates a force F on the charge flowing in the magnetic field. Because the guide rail is fixed on the foundation and belongs to a rigid body, the guide rail cannot move, and the armature is a movable body, the armature can generate corresponding braking force in the anti-running direction in the electromagnetic guide rail.

As shown in fig. 5 and 6, the two walls of the electromagnetic guide rail 10, i.e. the first and second

guide rail walls

12 and 13, have a certain height h from the ground, and the bottom of the electromagnetic guide rail has a triangular guide rail bottom end protrusion 11, so that it is ensured that some broken stone blocks will be automatically discharged to the outside of the guide rail after entering the electromagnetic guide rail under the action of the height h from the ground and the triangular protrusion, and will not be accumulated.

Therefore, the braking force can be regulated according to the magnitude of the current supplied in the station, the use of the current can be specified by national standards, and no corresponding standard exists at present, so that the purpose of providing forced power to achieve rapid braking compared with the conventional train braking can be achieved.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electromagnetic train reduction apparatus, comprising:

the brake undercarriage is rigidly connected to the bottom of a train and used for decelerating and stopping when a high-speed rail enters a station, and comprises an upper support (1) and a lower support (3) which are connected with each other, wherein the upper support (1) is connected to the bottom of the train, the bottom of the lower support (3) is connected with an armature (4), a middle support block (2) is arranged on the lower support (3), the middle support block (2) is connected with one end of a front folding framework (5), the other end of the front folding framework (5) is respectively connected with a hydraulic rod (7) and a rear folding framework (6), and the hydraulic rod and the rear folding framework (6) are both connected with the upper support (1);

the electromagnetic guide rail (10) is used for being matched with the brake undercarriage to generate magnetic field acting force for decelerating and stopping the high-speed rail, a first guide rail wall (12) and a second guide rail wall (13) are arranged on the electromagnetic guide rail (10), the ground clearance of the first guide rail wall (12) and the second guide rail wall (13) relative to the ground is h, h is more than 0, a guide rail bottom end bulge (11) for preventing broken stones from being accumulated is arranged at the bottom of the electromagnetic guide rail (10), and the cross section of the guide rail bottom end bulge (11) is triangular;

the device adopts the electromagnetic reverse thrust generated by the electromagnetic action principle to realize the braking of the train, when the train enters the station, a hydraulic rod (7) in the braking undercarriage unfolds a front folding framework (5) and a rear folding framework (6) so as to push out a lower support (3), at the moment, an armature (4) at the lower end of the lower support (3) extends into an electromagnetic guide rail (10), a switch S is switched on, a power supply G forms a current loop through a first guide rail wall (12), the armature (4) and a second guide rail wall (13), a current I generates a magnetic field B, a force F is generated to charges flowing in the magnetic field, and the armature (4) generates a braking force in the electromagnetic guide rail in the corresponding reverse running direction.

2. The electromagnetic train speed reducer according to claim 1, wherein the upper support (1) is provided with a frame for accommodating the lower support (3).

3. An electromagnetic train speed reducer as claimed in claim 2 in which said frame is rectangular in shape.