KR101173487B1 - A railway car direct drive motor coupling has a vibrating absorption function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling for a direct drive motor, and in particular, has a load support for accommodating the left and right loads and the circumferential load through an elastic force and a tapered inner diameter. By continuously absorbing the vibration transmitted from the axle to the motor, the present invention relates to a railway vehicle direct drive motor coupling to block the shock caused by the vibration of the axle to improve the durability and ride comfort of the motor. The configuration forms a plurality of socket engaging holes in the edge portion of the surface, and a motor shaft rotating wheel fitted to the motor shaft to transmit the rotational force of the motor to the axle, and a plurality of edge portions of the surface facing the motor shaft rotating wheel. It is provided through each of the socket coupling holes to form a socket coupling hole and is fitted between the axle rotation wheel and the motor shaft rotation wheel and the axle rotation wheel to block the vibration transmitted from the axle In addition, in the coupling for a railroad vehicle direct drive motor comprising a connecting socket for transmitting the rotational force of the motor to the axle, the connecting socket is fitted to the housing and the load support inserted into the housing, and the load support helps to secure Characterized in that it consists of a fixing pin.

Description

A railway car direct drive motor coupling has a vibrating absorption function}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling for a direct drive motor, and in particular, has a load support for accommodating the left and right loads and the circumferential load through an elastic force and a tapered inner diameter. By continuously absorbing the vibration transmitted from the axle to the motor, the present invention relates to a railway vehicle direct drive motor coupling having a vibration absorbing function to block the shock caused by the vibration of the axle to improve the durability and ride comfort of the motor.

In general, as a railroad vehicle is developed as an important means of public transportation, passenger convenience, energy saving, and vehicle automation are required.

In addition, a railway vehicle such as an electric vehicle running in the city is designed to obtain driving power by driving a traction electric motor formed under the vehicle body by receiving electricity through a pantograph, a newly constructed mechanism made of arms and springs.

The electric vehicle system receives a direct current 1500V and converts it into an AC voltage through an inverter, changes the voltage and frequency, and enters the motor to control the speed of the motor. The gear formed on the motor shaft to control is formed in such a way that the wheel of the electric vehicle rotates once during 7.07 rotation.

As shown in FIG. 1, the conventional traction transmission device for a railway vehicle as described above forms a wheel shock absorber 112 on the bottom of the bogie frame 111 and axles 113 on the bottom of the vehicle shock absorber 112. ) And wheel 114.

The axle gear 115 is formed on the axle 113 and the drive gear 116 is engaged with the axle gear 115 so that the axle 113 rotates once when the drive gear 116 rotates 7.07. 117).

Accordingly, the drive gear 116 is rotated by passing the AC voltage through the inverter to the drive motor 118.

This conventional induction traction transmission device 100 has the advantages of being robust, inexpensive, and little maintenance, as well as excellent speed control by the rapid advance of power semiconductor devices and microprocessors and the use of new control theory. As the performance can be realized, its use is spreading, and it is being replaced by a three-phase vertical induction motor instead of a conventional DC motor or a breathless motor.

Here, DC motors can control high speed and high speed, but DC motors have high price and maintenance difficulties, and in recent years, vector control of induction motors has been realized to achieve control performance that exceeds DC motors.

However, the use of variable speed drive systems is increasing in the industry to improve productivity or improve the efficiency of facilities. Current drive systems use V / F control to reduce the driving force and reduce energy efficiency by using switching noise and gearbox. From the point of view of improvement, a technical system needs to be improved, and there are problems in that the weight of the component is increased than the improved method, and thus the operating cost increases and the maintenance cost increases.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, an object of the present invention is to pass through the gears in the transmission when the power transmission system is supplied with a voltage and frequency in the inverter rather than the transmission method by the gear structure Integrated main motor system that directly drives the wheels instead of driving wheels reduces the cost of vehicle structures, reduces operating costs, and also provides a coupling for railroad car direct drive motors with vibration absorption that can reduce maintenance costs. It is.

It is another object of the present invention to absorb the vibration transmitted from the axle by receiving the left and right loads and the circumferential load of the axle generated during the operation of the vehicle to block the rotational force of the motor while preventing the motor from reaching or very weakly. The present invention provides a coupling for a railroad vehicle direct drive motor having a vibration absorbing function to improve the durability and ride comfort by preventing collision between the axle and the motor shaft.

The present invention for achieving the above object forms a plurality of socket coupling holes in the edge portion of the surface, and the motor shaft rotation wheel fitted to the motor shaft to transmit the rotational force of the motor to the axle, and the motor shaft rotation wheel and A plurality of socket coupling holes facing each other and forming a plurality of socket coupling holes at the edges of the surface and installed through the socket coupling holes so as to be located between the motor shaft rotating wheel and the axle rotating wheel, In the coupling for a railroad vehicle direct drive motor comprising a connecting socket for blocking the vibration transmitted from the axle and transmitting the rotational force of the motor to the axle, the connecting socket is a housing and a load supporting body inserted into the housing; It is characterized in that it is made of a fixing pin to be fitted to the load support.

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The load supports are formed in plural numbers so as to face each other, and each of the load supports is formed in a shape in which one side of the inner diameter is wider and the other side becomes narrower.

The load support may be separated from left to right.

The load support is composed of a mixture of a metal material and a rubber material having an elastic force, or is characterized in that composed of a rubber material.

The fixing pin is characterized in that consisting of a tapered pin to form an easy coupling with the inner diameter of the load support.

The present invention described above, while transmitting the rotational force generated in the motor at the same time absorbs the deformation in the rotational axis direction and its vertical direction to block the vibration generated by the friction between the wheel and the rail is not transmitted to the motor, thereby improving the durability of the motor and It can improve ride comfort, reduce operating costs and reduce maintenance costs.

In addition, the load support is composed of a rubber material having an elastic force has an effect that can accommodate the deformation.

In addition, by forming the inner diameter cross section of the load support to be tapered similar to the conical shape, there is an effect that can accommodate the vertical load and the lateral load at the same time.

In addition, by forming the load support to be separated from side to side, it is possible to replace the coupling without separation of the wheel has the effect of easy maintenance.

In addition, by forming a stopper on one end side of the motor shaft rotation wheel, even when the load support is damaged, the collision between the axle and the motor shaft can be prevented, thereby preventing the parts from being damaged or accidents due to this.

1 is a view schematically showing a conventional railway vehicle traction transmission device.
2 is a view showing an exploded state of a coupling for a direct drive motor according to an embodiment of the present invention.
3 is a view showing the front state of the motor shaft rotation wheel after combining Figure 2;
4 is a view showing the front state of the axle rotation wheel after combining Figure 2;
5 is a view showing a side state after combining Figure 2;
6 is a view showing a main part exploded cross section of the coupling according to the present invention.
7 is a view showing a use state in which the coupling according to the present invention is installed on the motor shaft and the axle.
FIG. 8 is a view illustrating a main cross-sectional state of FIG. 7.

Hereinafter, a preferred embodiment of a coupling for a railroad car direct drive motor having a vibration absorbing function according to the present invention will be described in more detail with reference to the accompanying drawings.

Hereinafter, the same reference numerals will be used to denote the same or similar elements in all of the following drawings, and repetitive descriptions will be omitted. The following terms are defined in consideration of the functions of the present invention. It should be interpreted as meaning.

As shown in Figures 2 to 8, the present invention is roughly made of a motor shaft rotation wheel 210, axle rotation wheel 220 and the connection socket 230.

The motor shaft rotating wheel 210 is formed in a roughly donut shape or in a disk ring of various forms, and the center portion of the motor shaft coupling hole for insertion into the motor shaft 310 of the direct drive motor 300. 211 is formed to penetrate the thickness direction, and a plurality of socket coupling holes 212 for coupling with the connection socket 230 are formed at the edge portion of the surface.

In addition, one end of the motor shaft coupling hole 211 of the motor shaft rotation wheel 210 is coupled to the motor shaft to prevent the motor shaft 310 and the axle 410 from colliding when the connection socket 230 is damaged. A stopper portion 213 having a step with the hole 211 is formed.

Accordingly, the stopper part 213 receives the load generated in the vertical direction when the connection socket 230 is damaged, and closely supports the one side outer diameter of the axle rotation wheel 220 to support the motor shaft 310 and the axle. The 410 may be prevented from hitting to prevent a big accident.

Here, the motor shaft coupling hole 211 has a larger diameter than the axle coupling hole 221 of the axle rotation wheel 220. The stopper part 213 is formed to have a diameter larger than the outer diameter of one side of the axle rotation wheel 220.

In addition, the motor shaft 310 is formed as a hollow shaft (hollow axle) to accommodate the axle 410 in the concentric form therein.

In addition, the motor shaft 310 and the axle 410 is preferably installed at a mutual interval.

The axle rotation wheel 220 is formed to be roughly donut-shaped or to form a disk ring of various forms, the axle coupling hole 221 for insertion into the axle 410 in the center portion is formed to pass through the thickness direction At the edge portion of the surface, a plurality of socket coupling holes 222 for coupling with the connection socket 230 are formed to be coaxial with the socket coupling holes 212 of the motor shaft rotation wheel 210.

The connection socket 230 is installed through the motor shaft coupling hole 211 and the axle coupling hole 221 so as to be positioned between the motor shaft rotating wheel 210 and the axle rotating wheel 220. Absorbs and blocks the vibration transmitted from the 410 and transmits the rotational force of the motor 300 to the axle 410.

In addition, the connection socket 230 is fixed to the housing 231 and the load supports 232 and 233 to be inserted into the housing 231 and the load supports 232 and 233 to assist the fixing. 234, 235.

The housing 231 has grooves 231b into which snap rings SR1 and SR2 are fitted to prevent separation of the load support members 232 and 233 after receiving the load supports 232 and 233 to both ends of the inner diameter 231a. In the cross section, a coupling hole 231c for coupling is formed through the socket coupling hole 222 and the fastener BT of the axle rotation wheel 220.

The load supporting members 232 and 233 are made of a metal material inside and outside, and the center portion is made of a rubber material which is an elastic body, or both of the inside and the outside is made of rubber which is an elastic body.

In addition, it is composed of a plurality of segments so as to be separated to the left and right are installed opposite each other, each load support 232, 233 is formed in a shape that one side of the inner diameter (232a), 233a is wider and the other side is gradually narrower do.

That is, the inner diameters 232a and 233a of the load supporting members 232 and 233 are mechanical terms when a rough cone type or both sides thereof are symmetrically inclined. It is formed so that a diameter may gradually become small from a part in an in taper, for example, an axis | shaft.

Accordingly, when the fixing pins 234 and 235 are coupled to the inner diameters 232a and 233a of the load supporting members 232 and 233, the fixing pins 234 and 235 can be more reliably fixed, and the vertical load And lateral loads can be accommodated simultaneously.

In addition, since the load supports 232 and 233 are formed to be separated from left and right, the coupling 200 can be replaced without removing the wheel 400, thereby facilitating maintenance.

The fixing pins 234 and 235 are composed of a plurality of segments, and are coupled through the inner diameters 232a and 233a of the load supports 232 and 233, respectively, and the shape of the fixing pins 234 and 235 is the load support ( It is preferable that the conical pins or the tapered pins formed with the tapered portions 234a and 235a are formed to have the same shape as the inner diameters 232a and 233a of the 232 and 233.

The fixing pin 234 has a fastening hole 234b for fastening to one side of the inner diameter, and a fastening hole 234c for fastening with the motor shaft rotation wheel 210 as an edge portion of the flange portion.

The connection socket 230 having such a configuration inserts the fixing pin 234 into each socket coupling hole 212 of the motor shaft rotation wheel 210 and inserts the fastener BT into the fastening hole 234c. Inserted and coupled to the motor shaft rotation wheel (210).

In addition, the load supports 232 and 233 are inserted into the inner diameter 231a of the housing 231 so as to face each other, and the snap rings SR1 and SR2 are inserted into the grooves 231b to fix the separation.

Next, the taper portion 235a of the fixing pin 235 is inserted into the inner diameter 233a of the load support 233, and the fastening hole 231c and the fastener (000) of the housing 231 and the axle rotation are rotated. The axle coupling hole 221 of the wheel 220 is coupled to each other through a fastener BT.

In addition, the fixing pin 234 is coupled to the inner diameter 232a of the load support 232 coupled to the inner diameter 231a of the housing 231.

The fastener BT passing through the inner diameter of the fixing pin 235 is fastened to the fastening hole 234c formed at one side of the inner diameter of the fixing pin 234.

Accordingly, the motor shaft rotation wheel 210 and the axle rotation wheel 220 are connected to each other by the connection socket 230.

In addition, the vibration generated in the axle 410 is fixed by the load support 232, 233 and the fastener (BT) coupled to the inside of the housing 231 of the connection socket 230, 234 and the load is transmitted to the fixing pin (235).

In addition, the fixing pin 235 is assembled to the fixing pin 234 by receiving the axial force by the fastener BT.

In this case, the fixing pin 234 and the load support 232, and the fixing pin 235 and the load support 233 are in close contact with each other.

In addition, the inside and the outside of the load support 232, 233 is made of a metal material, the central portion may be made of a rubber material of an elastic body, or may be made of only a rubber material.

Such load supports 232 and 233 are deformed within a certain load by the elastic force of the rubber material, and transmits a constant force without any further deformation in the above range. It is relatively small by the rail, and the frequent load is absorbed by the load supports 232 and 233 so that the displacement of the load supports 232 and 233 is not transmitted to the fixing pin 234. The deformation is absorbed by the deformation of the rubber itself formed therein, and the deformation is continuously restored, thereby maintaining the original state. On the other hand, for continuous load (motor rotation), the load is continuously transmitted from the point when deformation is completed within the elastic force.

By such a configuration, the coupling 200 according to the present invention is axially opposed to each other when the load support members 232 and 233 and the fixing pins 234 and 235 which form the connection socket 230 are coupled to each other. By using the load of reliably secures the support force in the circumferential direction it is possible to absorb the vibration generated from the axle 410 and transmitted to the motor 300.

The operation state of the present invention having the above-described structure will now be described.

First, when the direct drive motor 300 is installed to drive the railroad car, the motor shaft 310 is rotated by the magnetic force of the direct drive motor 300.

At the same time, the motor shaft rotation wheel 210, which is fitted and coupled to the motor shaft 310, is interlocked to rotate. Accordingly, the axle rotation wheel 220, which is fitted to both sides of the axle 410 and coupled thereto, is By being connected to the motor shaft rotation wheel 210 by the connection socket 230, the rotational force of the motor 300 can be efficiently transmitted to the axle 410.

In this case, the connection socket 230 is provided between the motor shaft rotation wheel 210 and the axle rotation wheel 220 by load supports 232, 233, and fixing pins 234, 235. Since it is in close contact with each other, even when the motor shaft 310 and the axle 410 rotate, the support force in the entire circumferential direction is kept constant by using the load in the axial direction, and thus only the vibration in the vertical direction applied from the axle 410 is applied. In addition, by absorbing the vibration in the lateral direction it is possible to block the transmission of the vibration to the motor 300 to achieve the durability of the motor 300 as well as to improve the riding comfort.

Accordingly, the coupling 200 transmits the rotational force of the motor 300 to the axle 410, supports the load of the motor 300, and effectively blocks the vibration generated from the axle 410.

In addition, the coupling 200 of the present invention is the motor 300 by the stopper portion 213 formed on one end side of the motor shaft rotation wheel 210, even when the load support 232, 233 is damaged. Not only the rotational force of the transmission is prevented, the collision between the axle 410 and the motor shaft 310 can be prevented in advance to prevent parts or accidents caused by this.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. And will be apparent to those skilled in the art to which the invention pertains.

210: motor shaft rotating wheel 211: motor shaft coupling hole
212 socket connection hole 213 stopper part
220: axle rotation wheel 221: axle coupling hole
222: socket coupling hole 230: connection socket
231 housing 231a inner diameter
231b: groove 231c: fastening hole
232, 233: load support 232a, 233a: inner diameter
234, 235: fixing pins 234a, 235a: tapered portion
234b, 234c: fastening hole 200: coupling
300: motor 310: motor shaft
400: wheel 410: axle
BT: Fastener SR1, SR2: Snap ring

Claims (6)

delete A plurality of socket coupling holes formed at the edge of the surface, and a motor shaft rotating wheel fitted to the motor shaft to transmit the rotational force of the motor to the axle, and a plurality of socket couplings to the edge of the surface facing the motor shaft rotating wheel. A hole formed in the axle shaft and fitted into the axle and positioned between the motor shaft wheel and the axle wheel, through each socket coupling hole to block vibration transmitted from the axle, and In the coupling for a railroad vehicle direct drive motor comprising a connecting socket for transmitting the rotational force of the motor to the axle,
The connecting socket is a coupling for a railroad car direct drive motor having a vibration absorbing function, characterized in that the housing and the load supporting body is inserted into the housing, the fixing pin is inserted into the load support to help fix. The couple of railway load direct drive motors with vibration absorbing functions according to claim 2, wherein the load supports are formed in plural numbers so as to face each other, and each load support is formed in a shape in which one side of the inner diameter is wider and the other side becomes narrower. ring. The coupling for a railroad vehicle direct drive motor according to claim 2, wherein the load support is separated from right to left. 3. The coupling of claim 2, wherein the fixing pin comprises a tapered pin to easily engage the inner diameter of the load support. The railway having vibration absorbing function according to any one of claims 2, 3, and 4, wherein the load support is composed of a mixture of a metal material and an elastic rubber material, or is composed of a rubber material. Couplings for vehicle direct drive motors.

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