KR100842366B1 - Driving apparatus for under-floor wheel lathe - Google Patents

Abstract

A wheel driving apparatus for under-floor wheel lathe is provided to transmit power from a motor to a driving roller by using first and second belt via a pulley unit. A wheel driving apparatus for under-floor wheel lathe comprises a motor(10), a pulley unit, a slave unit, and a transmission unit. The motor is installed in a wheel lathe area and under a rail on which wheels are mounted, and provided with a driving pulley(13). The pulley unit has a relay shaft(21) including first and second relay pulleys(23,25). The first and second relay pulleys are connected to the drive pulley of the motor via a first belt(15). The slave unit includes a worm shaft(31) and two worms. The worm shaft has a slave pulley connected to the second relay pulley via a second belt(35). The worms are installed at the worm shaft. The transmission unit includes two transmission shafts and a driving roller. The transmission shafts are engaged with worm wheels. The driving roller is in contact with wheels.

Description

DRIVING APPARATUS FOR UNDER-FLOOR WHEEL LATHE}

[A], [B], and [C] of FIG. 1 are a plan view, a front view, and a side cross-sectional view of a conventional numerical control front plate, respectively.

[A] and [B] of FIG. 2 are a plan view and a side view, respectively, of a wheel drive device for a front wheel according to the present invention;

[A] and [B] of FIG. 3A are a plan view and a side view of a drive assembly composed of a relay part, a follower part, and a transmission part, respectively;

[A], [b] and [c] of FIG. 3b are a sectional view and a side view for explaining the power transmission relationship between the driven part and the electric drive part of the drive assembly;

4 is a plan view and a side view of the left and right drive assemblies for explaining the tension holding means for the second belt.

<Description of the symbols for the main parts of the drawings>

L: Cutting board L1: Processing means

L2: measuring means L3: upper support means

L4: Side support means D: Drive device

R: Rail B: Base

W: Wheel A: Drive assembly

10: motor 11: drive shaft

13: drive pulley 15,35: 1 belt

20: relay 21: relay axis

23,25: relay pulley 30: driven part

31: Worm shaft 37: Worm

40: electric drive 41: electric shaft

43: worm wheel 45: driving roller

50: lifting means (hydraulic cylinder) 60: tension holding means

61: idle roller 63: fixed shaft

65: spring

The present invention relates to a wheel drive device for a front wheel to cut the tire profile of the wheel without disassembling the axle of the railway vehicle,

In particular, the arrangement of the spindle motor that powers the driving roller for driving the wheels in the front plate proposed in Patent Publication No. 2000-0031167 protrudes beyond the base area.

Inter-shaft distance of trolleys for railway vehicles (cars, carriages, trains, locomotives, high-speed railways, etc.) with various inter-shaft distances due to the interference of the spindle motors protruding when constructing tandem-type front panels to simultaneously process two wheels. I can't narrow the gap between the driving rollers that rotate the wheels

As the types of railway vehicles that can be processed are limited,

There is no economic feasibility as we manufacture and use each transmission board for each railway vehicle with various wheel distances.

In addition, since the spindle motor arranged in the front plate of the patent patent is higher than the rail and protrudes, there is a risk of injury due to collision with the head of the operator and the driver, thus preventing the worker and the driver's copper wire,

To improve this, the drive motor is arranged in the base area and at the same time located under the rail.

The power of the drive motor is to be transmitted to the driven pulley of the driven part which is connected to the driving roller of the transmission part through the relay relay pulley through the first relay and the second belt, respectively,

[Motorizing part including relay part-follower part-driving roller] forms an assembly and the assembly is configured to swing around the relay axis of the relay part.

It is possible to implement a tandem type cutting board, and also to process all vehicles with a wide range of bogie axles, thereby improving versatility and economic efficiency.

The present invention relates to a wheel drive device that is convenient for assembly and maintenance and operation.

As a railroad vehicle travels on a rail at high speed, the outer shape of the wheel is deformed due to wear of the flange portion and the tread of the wheel due to contact friction and uneven wear such as abrasion of the tread and braking due to the rotational impact of the hardened layer during braking. .

Due to the uneven deformation of the wheels, noise and vibration may be generated when driving the vehicle, which may lead to deterioration of ride comfort and even vehicle safety problems. Therefore, it is necessary to repair and repair the wheels as early as possible.

To this end, the wheel for the wheel of the railway vehicle is passed through the Republic of Korea Utility Model Registration No. 0069239 (Dec. 14, 1992) `` Improvement wheel cutting lathe '' and Patent Registration No. 0070357 (1994.01.25) `` Wheel processing device '',

Japanese Patent Application Laid-Open No. 06-285702 (1994.10.11) `` Methods for Cutting the Tread and Flanged Outer Periphery of Railroad Vehicle Wheels and Cutting Boards for It '' and Korean Patent Publication No. 2000-0031167 (2000.06.05) Control cutting machine and the cutting method according to the cutting machine ”

CNC wheel turning machines for wheels in single axis, wheels in bogies and wheels in combination are developed and put into practice.

The CNC system is applied to calculate the minimum cutting depth, to calculate the pressing force to sense the load of the wheel to be processed and to give the appropriate turning load condition, and to precisely machine the other wheel.

In particular, Figure 1 shows a technique associated with the Republic of Korea Patent Publication No. 2000-0031167, where [a] is a plan view, [b] is a front view, and [c] is cut along the line A-A 'of [b] One side cross section.

The front plate for one wheel (W) located on the rail (R)

Two driving rollers 145 are arranged to rotate the wheels by friction by receiving power from one motor,

The processing means (L1) is to contact the transfer bite to the rotating wheel to cut the cutting to restore the circular wheel,

Measuring means (L2) is to measure the shape of the wheel deformed wear, measuring the flange thickness and the tread surface of the wheel using two laser displacement sensors, which are non-contact sensors, to calculate the cutting depth,

Hold down unit (L3) is to press the top of the bearing housing of the wheel to secure the wheel shaft,

Side support means (Guide Roller Unit) (L4) is a device for closely fixing the inner surface of the flange of the wheel to prevent the left and right flow of the wheel by the cutting feed load during the wheel cutting operation is provided with two sets per wheel,

Chip shredding means (L5) is installed at the bottom of the center of the base (B), the continuous chip (long chip) generated during the wheel cutting operation falls through the chip shredder, cut short and transported to the chip discharge conveyor to discharge chips Reduces the volume of

Control command for the operation status of each means Calculate and display the minimum cutting depth for the standard shape restoration through the display for checking the operation status and the shape measurement of the left and right wheels and the diameter measurement, and to store and output the measured wheel data before and after machining It includes a control panel (L6) is provided with a microcomputer for.

However, as can be seen in [a] and [b] of FIG. 1, the turning of the driving roller 145 for the rotation of the wheel W is made by the spindle motor 110.

Since the spindle motor is cantilevered out of the base (B) region, it is difficult to secure sufficient supporting force and is unstable.

In addition, it is located higher than the rail R outside the base area, and the risk of collision between the body of the operator and the driver, in particular, the head, exists and obstructs the copper line.

Above all, the problem with the front disc of the disclosed patent is due to the projecting arrangement of the spindle motor, leaving the structure intact.

Suppose a tandem type front panel is constructed for machining two wheels simultaneously.

Due to the interference of the spindle motor protruding, the wagon (inter-vehicle distance: 1800 cm), the train carriage (inter-vehicle distance: 2100-2300 cm), the electric vehicle (inter-vehicle distance: 2100 cm), the locomotive (inter-vehicle distance: 1850-2800 cm), the high-speed rail Distance: 3000cm

In order to clean a variety of railway vehicle wheels with a single turning panel constructed on the basis of the above patent, it is necessary to change the arrangement of the main parts of the turning panel including a driving roller through a lot of time and effort.

Because of the gap between the rail (R) and the projecting arrangement of the spindle motor, it is impossible to configure a tandem type cutting board for a vehicle having an axis distance of 2600 cm or less.

In reality, the types of railroad cars that can be cut can not be limited, but the versatility and economy are inferior.

In addition, the power transmission of the conventional front wheel, including the published patent is made through a gear,

The gear drive has the same gear ratio, so the rotation speed for the left and right driving rollers is the same.

Worn wheels have different diameters at the left and right sides, so friction noise and shock are inevitable in gears for power transmission.

Furthermore, in the arrangement of the front panel based on the above-described patent, it is impossible to implement a tandem type front panel for wheel cutting of various railway vehicles by simultaneously changing the position of the spindle motor while satisfying the structure of lifting and lowering swing operation of the driving roller.

The present invention has been proposed to improve the problems caused by the motor arrangement of the front plate presented in Patent Publication No. 2000-0031167.

In the present invention, the motor is arranged in the front wheel base area and under the rail on which the wheel is mounted.

The power transmission from the motor to the driving roller is made by the first and the first belt through the relay,

When the driving assembly formed by the relay unit and the driving roller swings up and down by the elevating means around the relay shaft of the relay unit, the idle roller is used to ensure the tension of the belt for stable power transmission and to prevent the belt from being separated. It is an object of the present invention to provide a wheel drive device including a tension holding means.

In addition, an object of the present invention is to provide a wheel drive device that reduces noise and shock in the power transmission process even when the wheel is made by the power transmission of the motor through the belt, the differential wheel diameter is abrasion.

In order to achieve the above object, the wheel drive device for a numerical control control panel for wheels of a railway vehicle according to the present invention is

It is for driving a single wheel fixed in a numerically controlled front panel that cuts the tire tread of the wheel wheel of the wear-resistant railway vehicle.

A motor arranged in said front panel base area, located below a rail on which wheels are mounted, and having a drive pulley;

A relay unit having a relay shaft in which a first relay pulley and a second relay pulley connected to the driving pulley of the motor and the first belt are arranged;

A follower having a worm shaft having a driven pulley connected to the second relay pulley and a second belt of the relay unit, and two worms formed on the worm shaft; And

A transmission unit having two driving shafts each having a worm wheel engaged with the two worms of the driven unit, and a driving roller exposed at each end of the driving shaft to contact the wheel;

It is made, including.

The wheel drive device for a numerically controlled control panel for a wheel of a railway vehicle according to the present invention comprises the relay unit, the follower unit and the transmission unit in one drive assembly, and the drive assembly adjusts the angle around the relay axis of the relay unit. It is preferred to pivot up and down by means, in particular by hydraulic cylinders.

In addition, the wheel drive device for a numerically controlled control panel for the wheel of the railway vehicle according to the present invention is an idle roller for contacting the second belt as a tension holding means for the second belt, a fixed shaft located in the drive assembly, the idle roller It is preferable that the pivoting bar and the connecting bar connecting the fixed shaft, the fixed shaft is provided to include a spring to give elasticity to the connecting bar.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[A] and [B] of FIG. 2 are plan and side views of a wheel drive device for a front wheel according to the present invention, respectively.

[A] and [B] of FIG. 3A are a plan view and a side view of a drive assembly composed of a relay part, a follower part, and a transmission part, respectively.

[A], [B], and [C] of FIG. 3B are cross-sectional views and side views illustrating the power transmission relationship between the driven part and the electric drive part of the drive assembly, and [A] is cut along the line AA of FIG. 3A [A]. [I] is cut along the BB line of FIG. 3A [I],

4 is a plan view and a side view of the left and right drive assemblies for explaining the tension holding means for the second belt.

In each of the drawings, the same reference numerals, in particular, the tens and ones digits, or the same digits, tens and ones, and the same alphabet, refer to members having the same functions, and unless otherwise specified, refer to each reference in the drawings. The member which the code | symbol refers can just grasp | ascertain that it is a member based on these standards.

First, as shown in Figs. 1, 2 and 4, when the step portion and the flange portion of the wheel (W) uneven wear due to friction and collision with the rail during driving and braking, the front wheel (L) On vehicles transported by rails (R)

The driving rollers 45 of the wear-resistant material are arranged to form one set for driving one wheel, and two sets of driving rollers are required for the two wheels provided on one axle.

The rotational power of the driving roller 45 is transmitted through the motor 10-relay 20-follower 30 in order,

One of the cores of the wheel drive device D according to the invention lies in the arrangement of the motor 10 and in the power transmission arrangement for the motor in a particular arrangement.

That is, unlike the conventional arrangement of the motor 110 in the front panel (L) of Figure 1, in the present invention, as shown in Figure 2, the motor 10 is arranged in the region of the front panel (B), the wheel (W) is located under the rail.

In the present specification, the term 'within the base region' in relation to the arrangement of the motor is used in a non-strict sense as a concept in contrast to the arrangement of the motor of FIG. 1.

Common sense When constructing a steel base with a size that ensures sufficient bearing capacity and economy, the main part of the motor is mounted on the base without introducing a separate support,

In particular, it means that the shaft and the pulley of the motor toward the base outer surface and the body portion of the motor is mounted on the base (in Figure 1 associated with Patent Publication No. 2000-0031167, the motor body is arranged outside the base).

The motor 10 has a drive pulley 13 exposed to the drive shaft 11 and is powered by a first belt pulley 23 of the relay unit 20 via a first belt (especially V-belt) 15. Is passed.

As shown in FIGS. 2, 3A, 3B, and 4, the relay unit 20 is arranged above the motor 10 and includes a driven unit 20 including a worm 37 described below. ) And one drive assembly (A) together with the transmission (40) including a worm wheel,

The angle of the assembly A can be adjusted with respect to the relay shaft 21 of the relay unit 20 by the lifting means 50 connecting the lower bracket A1 to the roller 45 side. there is,

This drive assembly (A) characteristics are economical by minimizing the deformation of the device structure by introducing the motor arrangement characteristics of the present invention without modifying the main unit arrangement structure of the existing front panel, the user (purchase and use of the front panel) This is to satisfy the reliability of the existing transfer boards owned by the company or the wheel processing client (railroad operator such as railway work).

[Drive assembly A consisting of relay 20 including relay pulley-driven part 30 including driven pulley-transmission part 40 including driving roller] is provided on the elevating means 50. Configuration, which swings up and down by means of

In other words, in relation to power transmission, the configuration in which the driven pulley 33 swings up and down about the relay shaft 21 having the relay pulley is more essentially.

As mentioned above, it is impossible to implement in the transmission panel of the conventional gear type power transmission structure, including Patent Publication No. 2000-0031167.

The relay unit 20 has a second relay pulley 25 on the relay shaft 21 in addition to the first relay pulley 23 connected by the driving pulley 13 and the first belt 15 of the motor 10. ) Is further provided, and also transmits power to the driven pulley 33 of the follower 30 through the second belt 35 (also V-belt).

As mentioned above, power transfer of the motor passes through the drive pulleys 13 and the relay pulleys 23 and 25 of the motor to the follower pulley 33 to the first and second belts 15 and 35. Delivered by)

Even if the wheel diameter is different due to abrasion, it has the advantage of significantly reducing friction noise and shock generation in comparison with the conventional gear transmission in the power transmission process.

Next, the driven part 30 also constitutes a drive assembly A, and the worm shaft 31 is provided with an exposed pulley 33, and inside the two driving rollers 45 for one wheel. Worm 37 for power transmission is formed.

In addition, in the transmission part 40 including the driving roller 45, a worm wheel 43 engaged with the worm 37 of the worm shaft 31 is formed at each of the two transmission shafts 41.

Thus, the power for the wheel rotation of the motor 10 is [drive pulley (13)-first belt 15-first relay pulley (23)-second relay pulley (25)-second belt (35)-driven Pulley 33-worm 37-worm wheel 43-electric shaft 41-driving roller 45] are sequentially transmitted.

When the machining of the unweared wheels is necessary, the vehicle enters the front storehouse and is loaded at the center of the front plate along the rail R of the front plate L by a towing means such as a winch. By starting

The drive assembly A is centered on the relay shaft 21 by lifting and lowering means composed of a hydraulic cylinder 50 as shown in FIG.

More precisely, the ball bush provided coaxially with the relay shaft is pivoted and lifted about the inserted hinge shaft.

The wheels W are spaced apart on the sliding rails R (about 5 mm),

In more detail, the process is equipped with a pair of separate flow-type clamp roller to move the wheel precisely to the center of the front panel,

At this time, the axle load of the wheel is sensed and used as an additional load calculation data of the upper support means 23 and the drive assembly (A).

Subsequently, the driver moves to the workbench to operate the switch of the control panel L6 to press the bearing housing of the wheel with the upper support means to give an additional load for smooth cutting work.

The side support means (L4) and other fixing means are operated to lock the wheels to end the loading cycle.

Thereafter, the position shifting process of the processing means L1 is performed as a location cycle, and the minimum flange thickness of the wheel by the measuring means L2 and the distance measurement of the tread portion are performed as the shape measuring cycle.

Next, in the machining cycle, the control panel display calculates the inner distance of the left and right wheels, the wheel flange thickness and height, the wheel diameter, the wheel measurement data before machining, and the minimum cutting depth and diameter for machining to the standard shape. When the operator starts machining with reference to the screen,

The driving roller 45 is moved and the wheel is rotated and processed as a command cutting length by the processing means, and the falling cutting chips are discharged on the conveyor via the chip crushing means L5,

Rework, diameter measurement, shape measurement and unloading cycles are repeated.

On the other hand, another key point in the wheel drive device (D) according to the present invention is to ensure the tension of the belt, in particular the second belt 35, the drive assembly (A) by the lifting means 50 by the relay unit ( In order to prevent the detachment of the belt 35 for the stable power transmission, the tension holding means 60 is introduced when the swinging up and down swinging center of the relay shaft 21 of 20).

In particular, the tension holding means 60, as shown in Figure 4, the idle roller 61 in contact with the second belt 35, the fixed shaft 63 located in the drive assembly (A), the idle roller A connecting bar 65 connecting the pivot shaft 61a of the 61 and the fixed shaft 63, and a spring provided on the fixed shaft 63 to impart elasticity to the connecting bar 65. (Eg, torsion coil spring).

The idle roller 61 of the left tension holding means 60 is arranged in the lower portion of the second belt in consideration of the moving direction of the second belt so that the elasticity of the spring lifts the belt.

The idle roller of the right tension holding means is arranged on the upper part of the second belt so that the elasticity of the spring acts to press the belt.

As described above, the wheel drive device for a numerically controlled control panel for wheels of a railway vehicle according to the present invention arranges a motor in the base area of the front wheel and a lower rail on which the wheels are mounted, thereby ensuring driver's movement and preventing interference and compactness. Contribute to device implementation,

The power transmission from the motor to the driving roller is made by the first and the first belt through the relay unit, and the drive assembly formed by the relay unit and the driving roller is provided to the lifting means around the relay axis of the relay unit. In order to guarantee the tension of the belt and to prevent the belt from falling when the swing of the ascending and descending swing, the tension holding means including the idle roller is introduced to realize a stable power transmission system.

In addition, since the power transmission of the motor is made through the belt, noise and shock can be reduced during the power transmission process even when the wheels in which the diameter is different from the wear due to wear are produced.

In the above description, a specific well-known technique of the wheel turning board is omitted, but those skilled in the art will naturally be able to infer and deduce it.

In the above description of the present invention with reference to the accompanying drawings, the wheel drive device of a specific configuration and structure, but the present invention has been described a variety of modifications and changes by those skilled in the art, such modifications and changes are the scope of protection of the present invention Should be interpreted as belonging to.

Claims (5)

It is for driving a single wheel fixed in a numerically controlled front panel that cuts the tire tread of the wheel wheel of the wear-resistant railway vehicle. A motor arranged in said front panel base area, located below a rail on which wheels are mounted, and having a drive pulley; A relay unit having a relay shaft in which a first relay pulley and a second relay pulley connected to the driving pulley of the motor and the first belt are arranged; A follower having a worm shaft having a driven pulley connected to the second relay pulley and a second belt of the relay unit, and two worms formed on the worm shaft; And A transmission unit having two driving shafts each having a worm wheel engaged with the two worms of the driven unit, and a driving roller exposed at each end of the driving shaft to contact the wheel; Wheel drive device comprising a. The method of claim 1, The relay unit, the follower and the transmission unit constitutes one drive assembly, The drive assembly is a wheel drive device, characterized in that the lifting and lowering by the angle adjusting means about the relay axis of the relay unit. The method of claim 2, The angle adjusting means is a wheel drive device, characterized in that the hydraulic cylinder. The method of claim 2 or 3, The second belt is provided with a tension holding means. 5. The tension holding means according to claim 4, An idle roller in contact with the second belt, A fixed shaft located in the drive assembly, Connecting bar connecting the pivot axis of the idle roller and the fixed shaft, Wheel drive device characterized in that it comprises a spring provided on the fixed shaft to impart elasticity to the connecting bar.

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