JPH0885902A - Rail welded part grinding device - Google Patents

Abstract

PURPOSE: To easily and accurately grind a welded protrusion part of a rail surface. CONSTITUTION: A base body 10 to be fixed to a rail 1 is provided, and a slider 20 reciprocatingly driven along the longitudinal direction of the rail 1 is fitted to the base body 10. A grinding unit 40 integratedly equipped with a motor 41 and a grinding wheel 42 is pivotally supported swingably in the height direction of the rail 1 on the slider 20. Also, the slider 20 is equipped with a cutting adjusting device 50 for swinging the grinding unit 40 around a swinging shaft 44 to determine grinding depth of the grinding wheel 42. Further, the slider 20 is furnished with a sensor for detecting height of a welded protrusion part on a surface of the rail 1, and based on a signal from this sensor the cutting adjusting device 50 is driven, thus automating cutting operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail welding portion grinding device for flattening a welding projection formed on a surface of a welding portion when connecting rails by welding.

[0002]

2. Description of the Related Art Recently, railways and the like have been pursued to have a comfortable riding comfort and have been made longer rails.

With this long rail construction, molten metal is poured between the rail joints and joined at the track site. In a rail joining factory, a method of heating and melting a rail end portion and bonding the rail ends by pressure bonding is adopted. In either method, the surface of the welded portion of the crimped rail rises and does not become a flat surface.

[0004]

For this reason, as shown in FIG. 5, a welding projection 2 formed on the surface of a welding portion between the rails 1 and 1 is a scraping plate which is die-cut into a sectional shape of the rail 1 at the time of welding. Shaped through 3. However, the surface of the welded portion is not necessarily flattened only by the scraping operation, and thereafter, the operator flattens the surface with the grinder 4.

However, the welded surface of the rail 1 is usually required to have a smoothness of 0.1 mm to 0.2 mm,
The above-mentioned grinding work requires a considerable skill and is a laborious work. In addition, since the grinding operation gives a considerable vibration to the body, there has been a demand for mechanization and automation of the grinding operation.

Therefore, the present invention has been made in view of the problems in the work of grinding the surface of the welded portion of the rail and the demand for mechanization, and the mechanized rail welded portion grinding capable of easily and accurately grinding the welding protrusions. The purpose is to provide a device.

[0007]

To achieve the above object, the present invention provides a means for rotating a grinding wheel, a means for reciprocating the grinding wheel along a longitudinal direction of a rail, and the grinding wheel with respect to a rail. A rail welding part grinding device equipped with a means for vertically moving the rail was created. Further, a sensor for detecting the height position of the rail surface is provided in the grinding device, and a rail welding part grinding device for automatically adjusting the vertical movement of the grinding wheel is created, and a schematic configuration of each part means is as follows. To configure.

That is, a long base body fixed to the rail is provided. A slider that is reciprocally driven along the longitudinal direction of the rail is attached to the base body. A grinding unit in which a motor and a grinding wheel are integrally mounted on this slider is pivotally supported so as to be swingable in the rail height direction. Further, the cutting unit for swinging the grinding unit around the swing shaft to set the grinding depth of the grinding wheel is attached to the slider to obtain a semi-automatic rail-welded portion grinding device. Further, a sensor for detecting the height of the welding convex portion on the rail surface is attached to the slider, and the cut adjusting device is driven and controlled by a signal from this sensor to obtain a fully automatic rail welding portion grinding device. Is configured as follows.

That is, the rail welding portion grinding apparatus of the present invention is
An elongated base body having a clamper fixed to the rail and a guide body connected to the clamper and having a sliding surface formed in the longitudinal direction of the rail, and slidably attached to the guide body. A slider drive having a slider, a pinion that can be rotated forward and backward by a first motor provided on the base body, and a bar with a rack having a base end fixed to the slider and a tip end meshing with the pinion. An apparatus, a grinding unit pivotally supported by the slider along the height direction of a rail and having a grinding wheel rotated by a second motor, and a rocking shaft of the grinding unit is rotated to rotate the grinding unit. It is characterized in that it is configured by a cutting adjustment device that displaces the grinding surface of the grinding wheel in the rail height direction.

Further, the rail welding portion grinding apparatus of the present invention is
It is characterized by comprising a sensor for detecting the height of the welding convex portion protruding from the rail surface and a control means for controlling the cut adjusting device based on a signal from the sensor.

[0011]

The long base body is fixed to the rail by the clamper. The slider mounted on the base body slides on the guide body by a motor-driven slider driving device, and is reciprocated along the longitudinal direction of the rail. On the other hand, the grinding unit is pivotally supported by the slider so as to be swingable. The grinding unit is reciprocated on the rail along the slider along the longitudinal direction. To set the cutting amount.

Therefore, when the slider driving device is driven by a motor, the slider on which the grinding unit is mounted reciprocates on the base body along the longitudinal direction of the rail. Then, when the grinding unit is driven by a motor, the grinding wheel is reciprocally driven along the longitudinal direction on the rail surface while rotating to grind the welding convex portion on the rail surface. At this time, the rail surface can be precisely ground by operating the depth adjusting device to adjust the total depth of cut of the grinding wheel with respect to the rail surface according to the height of the welding projection of the rail.

Further, when the height position of the rail surface is detected by the sensor and the cutting adjustment device is driven by this detection output, the height of the grinding surface of the grinding wheel with respect to the rail surface is automatically set, and the entire rail surface is set. Can be ground automatically.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIGS. 1 to 3 show a first embodiment of the present invention, which is a semi-automatic rail welding portion grinding apparatus in which an operator manually sets only a cutting amount of a grinding unit.

In this rail welding portion grinding apparatus, a base body 10 fixed to a wall surface of the rail 1, a slider 20 slidably mounted on the base body 10, and a slider 20 are reciprocally driven along the longitudinal direction of the rail 1. For driving the motor, a slider driving device 30 for driving the motor, a motor-driven grinding unit 40 pivotally supported by the slider 20 so as to swing in the height direction of the rail 1, and the grinding unit 40 in the height direction of the rail 1. It is configured with a cutting adjustment device 50 for position adjustment.

In the base body 10, a pair of frames 11 arranged on both sides of the rail 1 along the longitudinal direction of the rail 1 are integrally joined with a frame-shaped clamper 12 having a gate-shaped cross section. Is formed. The clamper 12 is shown in FIG.
As shown in the end view, one of the inner wall surfaces is formed into a shape engaging with the side wall of the rail 1, and the backing plate 13 disposed on the other inner wall surface is protruded and retracted by screws 14, so that the rail The head 1a and the neck 1b of the
And the inner wall surface of the clamper 12, the base body 10 is firmly clamped to the side wall surface of the rail 1.

Reference numeral 15 denotes a guide body which is arranged on the base body 10 along the longitudinal direction of the rail 1.
0 support arm 1 attached to the outside of a pair of frames 11
6 comprises a pair of guide rods 17 pivotally supported. That is, as will be described later, the pair of guide rods 17 are fitted and mounted with the sliding ring 21 of the slider 20, and the slider 20 is slidably supported on the surface thereof in the longitudinal direction of the rail 1. The sliding surface 17a is formed.

The slider 20 is the above-mentioned pair of guide rods 1.
A total of four front and rear left and right sliding rings 21, which are fitted and mounted on 7, and two side plates 22 and 22 connecting the two front and rear sliding rings 21 and both end portions of these both side plates 22 and 22, The frame member 24 is formed by connecting the lateral members 23 and 23 together, and the slider 20 is mounted on the guide rod 17 on the rail 1.
Slide in the longitudinal direction.

The slider driving device 30 has a first motor 31 fixed to the upper surface of the clamper 12 of the base body 10, and a rotation-linear conversion for converting the rotational motion of the motor 31 into a linear motion to linearly drive the slider 20. And means 32. That is, the rotation-linear conversion means 32 includes the motor 31.
, And a rack 34 connected to the slider 20, which converts the rotational motion of the motor 31 into a linear motion by a rack-pinion connection, and moves the slider 20 in the longitudinal direction of the rail 1. Let it.

Further, the guide rod 17 of the base body 10
Although not shown, sensors for detecting the moving range of the slider 20 are provided at both ends of the slider 20. When the slider 20 reaches a predetermined area of the end of the guide rod 17, the motor 31 is rotated in the reverse direction to move the slider 20. Is configured to reciprocate on the guide rod 17.

The grinding unit 40 comprises a second motor 41 and a grinding wheel 42 connected to the motor 41, which are integrally arranged on a mount 43. A swing shaft 44 integrated with the mount 43 has a slider 20. The pedestal 43 is pivotally supported by and is swingable in the height direction of the rail 1 about the swing shaft 44.

The notch adjusting device 50 has a manual handle fixed to the side wall 22 of the slider 20.
The screw 52 disposed on the first rotating shaft meshes with the fan gear 45 that is integral with the swing shaft 44. In the cutting adjustment device 50, when the manual handle 51 is rotated right and left, the swing shaft 44 of the grinding unit 40 is rotated left and right,
The grinding wheel 42 swings in the height direction of the rail 1 so that the cutting depth can be freely adjusted.

The rail welding part grinding device configured as described above is operated as follows.

First, the clampers 1 on both ends of the base body 10 are
Position the screws 2 on both sides of the surface to be ground of the rail 1 and screw 1
4 is fastened and the base body 10 is fixed to the wall surface of the rail 1.
Next, the first motor 31 of the slider driving device 30 is driven to reciprocate the slider 20 on which the grinding unit 40 is mounted on the surface to be ground of the rail 1 along the longitudinal direction. Next, while manually adjusting the manual handle 51 of the cutting adjustment device 50 so that the cutting amount of the grinding wheel 42 becomes a predetermined amount,
When the second motor 41 of the grinding unit 40 is driven, the grinding wheel 42 slides while rotating on the surface of the rail 1, and the welding projection 2 of the rail 1 is ground.

In this embodiment, the support structure of the apparatus has the following excellent features.

That is, the base body 10 has a pair of frames 11 arranged on both sides of the rail 1 along the longitudinal direction of the rail 1, and guide rods 17 for slidably supporting the slider 20 are arranged on both sides of the frame 11. I configured it to
The slider 20 having the grinding unit 40 mounted thereon can be stably supported on the elongated rail 1. In addition, since the base body 10 has the clampers 12 at both ends of the frame 11, the long base body 10 is supported at both ends, and can be fixed stably on both sides of the ground surface of the rail 1. Further, since the inner wall surface of the clamper 12 is formed in a gate-shaped cross-section that engages with the side wall surface of the rail 1, and is configured to be fastened to the side wall of the rail 1 in a gripping manner, the long base body 10 is attached to the rail
Can be firmly clamped to the side wall surface of.

FIG. 4 shows a second embodiment of the present invention, which is a fully-automatic rail welding part grinding device capable of automatically setting the cutting amount of the grinding unit.

This rail welding part grinding device is the same as the above semi-automatic rail welding part grinding device, in which the notch adjusting device 50 of the manual handle is of a motor drive type and the height of the welding convex part based on the non-welding part of the rail surface is used as a reference. A sensor for detecting the height of the grinding wheel is provided on the slider 20 so as to operate the cutting adjustment device according to the detection signal, and the cutting amount of the grinding wheel can be automatically set. It has the same configuration as. Therefore, the same components are shown in FIG.
The same reference numerals as those shown in FIG.

That is, in the cutting adjustment device 60 of the rail welding portion grinding device, in the cutting adjustment device 50, the manual handle 51 for swinging the grinding unit 40 is replaced with a cutting driving motor 61, and the motor 61 is provided with a shaft. Like the cutting adjustment device 50, the screw 62 arranged on the connected rotary shaft is engaged with the fan gear 45 arranged on the swing shaft 44 of the grinding unit 40. Therefore, when the motor 61 is rotated, the grinding unit 40 rotates around the swing shaft 44, the grinding surface of the grinding wheel 42 moves in the height direction of the rail 1, and the depth of cut is freely adjusted. .

Further, the sensor 70 is a device which is attached to the slider 20 and detects the height position of the surface of the rail 1 to drive the motor 61 of the cut adjusting device 60, and irradiates the surface of the rail 1 with a laser beam. And a control unit 72 that processes the detection signal of the sensor unit 71 and drives the motor 61 of the cutting adjustment device 60 based on the detection output of the sensor unit 71. .

The rail welding portion grinding device having such a configuration is set on the rail 1 and driven in the same manner as the semi-automatic rail welding portion grinding device. In this case, the sensor 70 is mounted on the slider 20 and is driven on the surface to be ground of the rail 1, and the height of the welding projection 2 with respect to the non-welded portion (flat surface) of the rail 1 surface is detected. You. Therefore, the control unit 7
Numeral 2 calculates the required total swing angle of the cutting unit 40 based on the height of the welding projection 2, and drives the motor 61 intermittently or continuously at regular time intervals.

In the present invention, the grinding unit 40 grinds the rail 1 on the peripheral surface side of the grinding wheel 42 with the rotation axis of the grinding wheel 42 oriented in the horizontal direction. It is also possible to grind in the vertical direction on the side surface side of the grinding wheel 42. However, in this case, the grinding wheel 42 does not swing in the vertical direction, but rises and falls in the vertical direction.

Further, in the cut adjusting device 50, the screw 52 of the rotary shaft is meshed with the fan gear 45 of the swing shaft 44 to rotate the grinding unit 40 around the swing shaft 44. Grinding unit 40
Can be directly driven.

Further, the base body 10 has a frame structure of supporting both ends in which long frames 11 are arranged on both sides of the rail 1 and the ends are connected by a clamper 12, but cantilever support on one rail 1 side. It is also possible to change the structure to a suitable structure.

[0036]

As described in detail above, according to the present invention, means for rotating the grinding wheel, means for reciprocating the grinding wheel along the longitudinal direction of the rail, and moving the grinding wheel up and down with respect to the rail. Since the rail welded portion grinding device is configured by the means, it is possible to easily and accurately grind with the main grinding device without having to grind the surface of the joint portion with a grinder or the like. Further, by disposing a sensor that detects the height of the welding convex portion on the rail surface, the cutting operation of the grinding wheel can be automated, and the rail surface can be fully automatically ground.

[Brief description of drawings]

FIG. 1 is a plan view of a semi-automatic rail welding portion grinding device according to a first embodiment of the present invention.

FIG. 2 is a side view of the rail welding portion grinding device of FIG.

FIG. 3 is an end view of the rail weld grinding machine of FIG.

FIG. 4 is a side view of a fully automatic rail welding portion grinding device according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing the swelling of the surface of the rail welding portion.

[Explanation of symbols]

1 Rail 2 Welding convex portion 10 Base body 12 Clamper 15 Guide body 17a Sliding surface 20 Slider 30 Slider drive device (means for reciprocating the grinding wheel along the longitudinal direction of the rail) 31 First motor 33 Pinion 34 Bar with rack 40 Grinding unit (means for rotating the grinding wheel) 41 Second motor 42 Grinding wheel 44 Swing shafts 50, 60 Depth adjusting device (means for moving the grinding wheel up and down relative to the rail) 71 Sensor section 72 Control section (Control means)

Claims (3)

[Claims] 1. A rail comprising means for rotating a grinding wheel, means for reciprocating the grinding wheel along the longitudinal direction of the rail, and means for vertically moving the grinding wheel with respect to the rail. Welding part grinding equipment. 2. An elongated base body having a clamper fixed to the rail and a guide body connected to the clamper and having a sliding surface formed in the longitudinal direction of the rail; A slider that is movably mounted, a pinion that can be rotated in the forward and reverse directions by a first motor disposed on the base, and a bar with a rack whose base end is fixed to the slider and whose tip is meshed with the pinion. A slider driving device including: a grinding unit including a grinding wheel that is pivotally supported by the slider along a rail height direction and is rotated by a second motor; and a rocking shaft of the grinding unit. A rail welding part grinding device comprising: a cutting adjustment device that is rotated to displace the grinding surface of the grinding wheel in the rail height direction. 3. The sensor according to claim 2, further comprising a sensor for detecting the height of the welding projection protruding from the rail surface and a control means for controlling the cut adjusting device based on a signal from the sensor. Rail welding part grinding device.