JP2003053655A - Cutting and correcting device for rail upper surface part of railway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To flatly grind wavelike abrasion generated on a rail upper surface to smoothly finish the surface by using a grinding body formed into an endless belt shape while traveling the grinding body. SOLUTION: This device is provided with an endless grinding belt 20 which is wound on at least two rotating bodies (a driving wheel 27 and a driven wheel 28) arranged at a required interval and is driven in parallel with a cut surface 51 on a grinding operation side, a grinding energizing means 30 for energizing grinding force by planarly pressing a part of the grinding belt 20 on the cut surface 51 between the rotating bodies, and a traveling bogie 11 provided with wheels 12 and 12 travelable and movable along the cut surface 51 by supporting the grinding belt 20. The grinding belt 20 is constituted by superimposing a number of sheets of grinding cloth pieces made of numberless abrasive grains adhered to the surface by imparting an angle of inclination to the tip 20 in the width direction of the cut surface 51 and shifting the tip 20 little by little on a base part belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding device for correcting a rail upper surface of a railroad track and its vicinity, and more specifically, to an endless grinding belt by superposing grinding web pieces carrying abrasive grains. The present invention relates to a rail rail upper surface rectifying device that can evenly grind the upper surface of a rail while driving it to move it in a plane.

[0002]

2. Description of the Related Art Generally, the upper surface of a rail laid on a railroad track has minute wavy unevenness in the lengthwise direction of the rail due to friction between the upper surface of the rail and the wheels as the train runs. Wear occurs. When such wavy unevenness progresses, shocking vibrations are generated in the traveling wheels, which deteriorates the riding comfort of passengers, promotes damage to the track and roadbed, and causes noise along the railroad tracks. That will affect the running stability of the vehicle.

The fact that wavy unevenness is likely to occur with such minute dimensions is particularly noticeable in curved sections where speed differences occur in the wheels of a traveling train and sections where braking force is frequently applied during traveling. Is. When a condition called corrugated wear occurs, in which unevenness occurs on the running surface of the rail,
Since this will hinder the running of the train, it is necessary to periodically or irregularly correct the upper surface of the rail and the gauge corner (hereinafter simply referred to as the upper surface) to an even level. Conventionally, the work of correcting the upper surface portion of the rail to an even level is performed by a grinding device equipped with a rotating grindstone attached to a vehicle that is self-propelled to perform an operation of moving on the rail and grinding while rotating the grinding grindstone. There is. In addition, in order to use this grinding wheel, a large-scale device for arranging and working a plurality of rotary wheels is required.

In addition to this, as a prior art, for example, Japanese Patent Laid-Open No.
Those disclosed in, for example, 0-195805 and JP-A-57-158404 are known. In this prior art, all use endless polishing belts, and in Japanese Patent Laid-Open No. 10-195805, at least two rollers can be rotated on one beam. The endless abrasive web material is wound and stretched so that it can be mounted and actuated in the longitudinal direction of the rail (longitudinal direction), positioned slightly above the rail, and carried by the beam between the two rollers. One urging shoe that receives the action of one jack is arranged, and the endless polishing web material that is driven and driven by one motor is urged by the jack against the upper surface of the rail head. This is a device for grinding the upper surface of the part.

The grinding device for the upper surface of the rail head is provided with a polishing web material which is endless and is driven in a plane parallel to the longitudinal axis of the rail, and is capable of continuously and precisely grinding or polishing. It is stated that it is possible and that the small undulations due to the rotary tools used to grind and correct the rails can be eliminated.

Further, in Japanese Patent Application Laid-Open No. 57-158404, a polishing belt is wound around a free roller and a driving roller which are supported so as to be displaceable in the length direction and the width direction, and between the both rollers. Arrange two rubber polishing rollers that are pushed down by spring force and press the polishing belt against the upper surface of the rail, so that the auxiliary wheels and guide wheels can be moved back and forth on the rail. At the intended polishing location, lower the free roller so that it is in contact with the polishing belt rail surface, tension it and drive it, and remove the rust on the rail upper surface by polishing the rail surface with the pressing action of the polishing roller. It is described that it is possible.

A device for grinding a welded portion of a rail is disclosed in Japanese Utility Model Publication No. 6-21921. This rail grinding device grinds an endless polishing belt around a pair of front and rear pulleys in a tensioned state and is driven by a driving machine, which is supported by a gate-shaped frame that can run along the rails. The grinding belt is pressed against the rail at the part wound around the peripheral surface of the driven pulley to grind it, and the contact pressure between the grinding surface and the rail surface is kept constant. It is described that there is an effect that irregularities can be removed.

[0008]

However, when corrugated wear generated on the upper surface of the rail is corrected by using the above-mentioned rotating grindstone, the rotating grindstone rotates relative to the upper surface (upper surface) of the rail. Since the grinding is performed by tilting the shaft core, it is inevitable that the finished surface will be finely roughened in the longitudinal direction according to the movement of the rotating grindstone on the ground surface and cannot be accurately ground. , There is a fundamental problem.

On the other hand, the above-mentioned Japanese Patent Laid-Open No. 10-1958
In the grinding device disclosed in Japanese Patent Publication No. 05, as described in that publication, after being corrected by a rotating grindstone, it is polished by an endless polishing belt to be finished into a flat surface and precise polishing can be performed. The apparatus described in the publication has a problem that the polishing web material is clogged while the work is continued as long as the polishing web material is used for polishing, and the work cannot be continuously performed in a long section.
Of course, with an endless polishing belt made of this polishing web material, it is practically impossible to straighten the upper surface of the rail that has wavy wear directly without performing preliminary grinding. Is.

Further, in the rail polishing apparatus disclosed in the above-mentioned Japanese Patent Laid-Open No. 57-158404, an endless polishing belt is also used, and as described in the publication, it occurs at the head surface of the rail at most. Except for rust, it is only possible to expose the bare metal part to the extent of polishing, and it is not possible to perform a grinding operation to level the unevenness due to corrugated wear. According to Japanese Utility Model Publication No. 6-21921, an endless polishing belt is used, but a part of the polishing belt wound in a tension state is pressed against a rail at a peripheral surface portion of one pulley to grind. However, it is difficult to achieve a flat finish.

As described above, in all of the preceding grinding devices, an endless belt-shaped polishing web material (polishing belt) is used to trim the upper surface of the rail. In these products, the grinding ability is low, and because the part with abrasive grains to grind is lithographic, the chips generated by grinding cannot be discharged smoothly, causing clogging and significantly increasing the service life. It is short and cannot be put to practical use.

The present invention has been made in order to solve such a problem, and the wavy wear generated on the rail upper surface on the track is planarized on the rail upper surface portion by the endless belt-shaped grinding body. It is an object of the present invention to provide a rail upper surface part rectifying device that can be brought into contact with and ground, and that can be ground evenly while traveling and finished evenly.

[0013]

In order to achieve the above-mentioned object, a rail rail upper surface trimming device according to the present invention is wound around at least two rotating bodies arranged at required intervals. And an endless grinding belt whose grinding operation side is driven in parallel with the work surface, and a grinding device for urging a grinding force by planarly pressing a part of the grinding belt between the rotating bodies against the work surface. The grinding belt is provided with a biasing means and a running support provided with a guiding means for supporting the grinding belt so that the grinding belt can be moved along a surface to be cut. It is characterized in that a large number of pieces are superposed on a base belt with their tips being inclined with respect to the width direction of the work surface and being slightly shifted.

In the present invention, when the corrugated wear of the rail is to be rectified, the grinding urging means grinds the rotatively driven grinding belt while moving along the work surface of the rail by the guide means. When the working side is pressed against the work surface, the grinding belt driven to be wound is pressed against the work surface in a flat state at the grinding position and maintained.
This grinding belt is endlessly formed because it is mounted endlessly on the base belt in a state where the tips of the grinding cloth pieces with innumerable abrasive particles attached to the surface are slightly displaced from each other. In contact with the surface to be machined, it is ground by the attached abrasive grains. Further, since the tips of all the grinding cloth pieces are arranged with an inclination angle with respect to the width direction of the grinding belt, the work surface is ground in an inclined state with respect to the width direction, and innumerable abrasive grains are attached. Since the one end of the grinding cloth moves and grinds in an intermittent state, the chips are discharged to the outside through the gap formed in the tip of the grinding cloth piece in linear contact. Then, the leading end of each grinding cloth piece is updated by the subsequent portion as it wears in sequence. Therefore, the grinding force does not decrease and the grinding operation can be continued.

According to the present invention, as described above, the grinding belt is linearly contacted with the tips of a large number of grinding cloth pieces, and is contacted in a state inclining with respect to the width direction of the work surface. Therefore, at the contact end, grinding force acts from the inclined tip side to the rear side, and the cutting function is fully exerted,
And the gap along the tip facilitates chip discharge,
Even if the grinding operation is performed at a high speed, the grinding portion is in an intermittent state, and the gap between the grinding portions allows the outside air to flow and suppress the heat generation in the grinding operation portion. Therefore, under such a condition, the grinding belt can strongly grind the ground portion by strongly contacting the surface to be machined with the urging force of the grinding urging means, so that it is ensured that the surface is uneven due to wavy wear. It can be corrected to a level condition. Of course, there is an effect that grinding can be performed without problems even in a continuous long section, and the ground surface can be finished smoothly.

The aforesaid grinding belt is brought into contact with and removed from the surface to be cut by the lifting means attached to the traveling support, and the grinding portion is ground by the pressing force of the grinding urging means. It is better to be done (2nd invention). By doing this, the grinding belt can be kept out of contact with the work surface, that is, the upper surface of the rail, except during the grinding work, so when the grinding belt is moved to the target grinding position, it can be moved by stopping the driving of the grinding belt. The durability can be extended because it does not damage. Then, at the time of work, the grinding portion can be strongly pressed against the surface to be ground to effectively grind.

The traveling support is composed of a traveling carriage which can travel along rails on a track, and a grinding support frame which is guided by a vertical support shaft standing upright on the traveling carriage and is supported by an elevating mechanism so as to be movable up and down. The grinding belt, the driving mechanism therefor, and the grinding urging means are preferably supported by the grinding support frame (third invention). By doing so, the grinding support frame can be pulled up by the elevating mechanism until the grinding operation is performed, and the traveling carriage can be run without contacting the grinding belt with the rail surface. During the grinding operation, the lifting mechanism is operated to lower the grinding support frame, thereby operating the grinding belt and quickly grinding the rail upper surface. In this way, the grinding belt and the drive mechanism thereof are all supported by the grinding support frame, and the grinding belt can be correctly moved up and down with respect to the rail by the vertical support shaft on the traveling carriage to distinguish between working and non-working. The function is provided, and there is an effect that a reliable grinding work can be performed with a simple structure.

In the first to third inventions, the grinding urging means is arranged between the support positions of the rotating body for stretching the grinding belt and pressed against the back side of the grinding portion by the grinding belt. As described above, a face plate having a required area and an elastic body that is provided behind the face plate and applies a pressing force are preferably provided and attached to the traveling support (the fourth invention). ). By doing so, a pressing force is applied to the grinding portion of the grinding belt with respect to the work surface by an elastic body having a surface area having a required area incorporated therein, and the tip end of each grinding cloth piece of the grinding belt. The parts are in strong contact with each other and can be continuously and planarly ground.

In the face plate of the grinding urging means, it is preferable that the contact portion with the grinding belt is made of ceramic (fifth aspect).
invention). By doing so, it is possible to reduce the frictional resistance of the grinding belt in contact with the base belt, prevent the grinding belt from generating heat at the location where the grinding force is applied, and enhance the durability of the belt. .

Further, the grinding urging means is supported by a support arm provided on the grinding support frame so as to be swingable in the width direction of the grinding belt so that the face plate contacts the back side of the grinding belt. Good to be configured (6th
invention). This makes it possible to bring the grinding operation portion of the grinding belt into contact with the work surface in the width direction in correspondence with the tilt, and perform grinding according to the tilt. Therefore, there is an effect that it is possible to grind the surface to be machined in a brute force manner without grinding a part in the width direction.

A seventh aspect of the present invention is an endless grinding belt wound around at least two rotating bodies arranged at required intervals and driven on the grinding operation side in parallel with a work surface, and the rotating body. A grinding urging means for pressing a part of the grinding belt two-dimensionally against the surface to be ground to urge the grinding force, and a guide means for supporting the grinding belt so that the grinding belt can travel along the surface. It is preferable that a plurality of grinding devices provided with the traveling support provided are arranged at required intervals. By doing so, the amount of grinding by each grinding device is shared, so that the work surface is sequentially ground with the required amount of grinding, and as a result, correction grinding of corrugated rail wear is repeatedly moved. Thus, the desired correction can be performed with the minimum number of times of travel, and the working efficiency can be improved.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a concrete embodiment of a rail upper surface rectifying device according to the present invention will be described with reference to the drawings.

FIG. 1 is a front view of the rail upper surface trimming device of this embodiment. 2 shows a part of the plan view of FIG. 1, and FIG. 3 shows an enlarged sectional view taken along line AA of FIG.
An enlarged cross-sectional view showing the grinding urging means of the grinding belt is shown in FIG.

Rail top surface trimming device 10 of this embodiment
Is a traveling carriage 11 (corresponding to a part of the traveling support body of the present invention) which is provided with wheels 12 and 12 at front and rear at desired intervals and is allowed to travel on a rail 50, and an elevating mechanism for the traveling carriage 11. A grinding support frame 18 (corresponding to a part of the traveling support of the present invention) movably supported vertically via 14, 14 (corresponding to the lifting means of the present invention) is rotatably provided at a required interval. An endless grinding belt 20 wound around a drive wheel 27 and a driven wheel 28, and the grinding belt 20.
And a grinding urging means 30 for urging a grinding force to the grinding layer by the grinding piece 20b behind the work surface 51 (the upper surface of the rail 50) at the intermediate portion of the winding. is there.

The traveling carriage 11 is framed to a required size and is attached to both ends of an axle 12a supported by bearings at lower portions at both ends in the longitudinal direction, so that the traveling wheels 12 can travel along the rail 50. 12 is provided and connecting brackets 13 and 13 are provided at both front and rear ends so that the vehicle can be towed by a tow vehicle. It should be noted that this traveling carriage 11 is formed in a state in which a location where a grinding support frame 18 to be described later is arranged is cut in a plane, and has a structure that does not hinder the grinding work.

The grinding support frames 18 on which the grinding belt 20 is installed are symmetrically provided on the upper left and right sides of the traveling carriage 11, and a drive wheel 27 for winding and supporting the main member 18a to which the drive motor 19 is attached and the grinding belt 20. And a sub-member 18b for supporting each axis of the driven wheel 28 are arranged in parallel at a predetermined interval and are integrally assembled by a stay member 18c. The main member 18a
Are arranged on the center side of the traveling carriage 11 and on the outer side of the sub-member 18b, respectively, and are assembled by a plurality of stay members 18c with mounting bolts. A drive motor 19 is attached to the upper portion of the inner surface of the main member 18a, and a drive pulley 22 is attached to the output shaft 19a of the main member 18a so as to project outward. The sub-member 18b has a height smaller than that of the main member 18a, and the axis is aligned with the bearing 23 provided on the main member 18a so that the axis is orthogonal to the traveling direction at one of the lower positions and the axis is aligned with the coaxial line. The bearings 23a are additionally provided, and these bearings 2a
A drive shaft 24 is rotatably provided at 3, 23a, and the other driven shaft 25 is supported at a required distance from the drive shaft 24 by a bearing member 26a of a take-up 26 attached to the main member 18a side. The inter-axis dimension is adjustable. The drive shaft 24 and the driven shaft 25 are
The drive wheel 27 projects from the outer surface of the drive shaft 24 at the end of the drive shaft 24 and the driven wheel 2 at the end of the driven shaft 25.
8 are attached respectively.

The grinding belt 20 has a drive wheel 27 on a drive shaft 24 provided on the grinding support frame 18.
And the driven wheel 28 on the driven shaft 25. And the drive wheel 2
7 and the driven wheel 28, the outer peripheral portion of which is formed of a wear-resistant elastic material, for example, urethane resin to have a middle height. Further, a guide roller 29 with a collar is arranged at an intermediate portion between the wheels 27 and 28 so that the grinding belt 20 to be wound is not displaced in the width direction. The grinding belt 20 is a driving pulley 2 attached to an output shaft 19a of a driving motor 19 attached to the grinding support frame 18.
For example, the timing belt 22A is wound around the pulley 22a on the drive shaft 25 to transmit power by transmitting the power, and the tip of each grinding cloth piece (described later) is driven in a direction scratching the work surface at a required speed. . The grinding belt 20
Are arranged such that the grinding operation side (lower side) is parallel to the upper surface of the rail 50 that is the surface to be cut in a state of being wrapped around the drive wheel 27 and the driven wheel 28.

Further, as shown in FIG. 5, the grinding belt 20 has a large number of abrasive grains adhered to the surface thereof, and has a width wider than the width of the surface to be machined (the upper surface width of the rail head portion), and has an appropriate length. In this configuration, a large number of grinding cloth pieces 20b, the tip ends 20c of which are slightly shifted to fix the base ends to the upper surface of the base belt 20a, and the tip ends are arranged in an overlapping manner in a free state. The tip 20c of the grinding cloth piece 20b that constitutes the grinding belt 20 is superposed on either the right or left in the width direction at an appropriate inclination angle θ.

The grinding support frame 18 which supports the grinding belt 20 in such a manner that it can be driven to travel is supported by the elevating mechanisms 14 and 14 at the front and rear ends thereof so as to be able to move up and down on the traveling carriage 11. The elevating mechanism 14 is attached to the upper end of a vertical support shaft 15 provided upright on the upper surface of the traveling carriage 11 at the front and rear positions of the grinding support frame 18, and correspondingly above the main member 18a of the grinding support frame 18. The piston rods 16a of the operating cylinders 16 that are operated by the fluid pressure are attached so that their axial centers match, and the piston rods 16a are operated by the operation of the operating cylinders 16.
When a is advanced, a reaction force is applied to the vertical support shaft 15 to raise the grinding support frame 18 to which the cylinder body 16b is attached, and when it is operated in reverse, it is lowered to press the grinding belt 20 against the work surface 51. ing. Grinding support frame 1
In the front and rear of 8, there are provided guide portions 17 and 17 which are slidably guided by the vertical support shafts 15 and 15 in order to surely perform this lifting operation.

The grinding urging means 30 is provided with both driving and driven wheels 27, 28 in the tension portion of the grinding belt 20.
A face plate 31 having a flat surface of a required area so as to press the grinding layer formed by the grinding piece 20b against the work surface 51 of the rail 50, which is provided at the intermediate position of the driving belt of the grinding belt 20. An elastic body 33 (for example, a coil spring) that functions to press the face plate 31 toward the rail side;
Correctly attach the grinding layer of the grinding belt 20 to the work surface 5 of the rail 50.
1. A swinging support structure in which a holding member 32, which holds the face plate 31 by incorporating the elastic body 33 therein, is swingable in the width direction and is attached to a support arm 36 by a pivot pin 35 so as to be pressed in accordance with 1. It is composed of and. The support arm 36 is attached to the grinding support frame 18 and is provided on the upper portion of the grinding belt 20 in a protruding manner. Further, the face plate 31 is configured such that a ceramic pressing plate piece 34 is attached to the lower surface of the face plate 31 to ensure the urging force and cushioning property of the plurality of elastic bodies 33.

By attaching a ceramic pressing plate piece 32 to the lower surface of the face plate 31, when the grinding force is applied by contacting the back surface (base belt 20a) of the grinding belt 20 running at high speed, It is possible to reduce the frictional resistance between the two and at the same time reduce the influence of frictional heat with the heat-resistant material to improve durability.

With the grinding belt 20 constructed and supported in this manner, the traveling carriage 11 has the wheels 1 in the wound state.
When traveling on the rail 50 by the rails 2 and 12, the grinding support frame 18 is pulled up by the operating cylinders 16 and 16 of the lifting mechanisms 14 and 14 in the unloaded state, and the rail 5 is pulled up.
It is kept away from zero. Further, in order to tension the grinding belt 20, the driven shaft 2 is taken up by the take-up 26.
The driven wheel 28 is moved through 5 and adjusted so that the tension state can be maintained.

Next, the rail upper surface grinding apparatus 10 of the present embodiment.
The operation of will be described. First, the rail upper surface grinding device 1
0 makes the traveling carriage 11 ready to travel on the rail 50 of the track, prepares to be pulled by a towing vehicle (not shown), and runs at a low speed. At the same time, the drive motor 19 is started to transmit power to the drive wheel 27,
The grinding belt 20 is driven to run. At the start of driving, the grinding support frame 18 is raised and the grinding belt 2
0 is kept separated from the work surface 51 (upper surface of the rail).

The traveling carriage 11 is located at the position for correcting the rail 50.
After moving the, the operating cylinder 1 of the lifting mechanism 14,14
6 and 16 are simultaneously operated to lower the grinding support frame 18. At this time, the grinding support frame 18 is properly moved downward at the front and rear positions by the guide portion 17 guided by the vertical support shaft 15, and the grinding belt 20 is brought into contact with the upper surface of the rail 50.
The traveling carriage 11 is moved under a load. Then, the upper surface of the rail 50 contacting with the grinding belt 20 driven at a predetermined speed is sequentially ground.

Grinding belt 2 for grinding the upper surface of the rail 50
0 is a large number of grinding part pieces 20b formed by adhering innumerable abrasive grains, as described above, in the grinding part in contact with the work surface 51.
However, since the tip 20c is formed so as to be inclined leftward or rightward in the width direction and slightly shifted so as to be overlapped, the tip 20c of each grinding piece 20b that is in contact with the work surface 50 is inclined at the tip 20c. A grinding force is exerted from the front end side to the rear end side so that the cutting function is sufficiently exerted, and moreover, a gap formed between the front end portion of another grinding portion and the adjacent position along the front end 20c portion thereof. Makes it easier to discharge chips and enables high-speed grinding. Furthermore, since the grinding operation part is in an intermittent state due to the gap, it is possible to suppress the heat generation in the grinding operation part by allowing the outside air to circulate due to the gap between the tips of the respective grinding part pieces 20b.

The grinding belt 20 that is ground and driven under such a condition has the grinding biasing means 30 with respect to the work surface 51.
Since the urging force of the face plate 31 and the elastic body 33 urges the base belt 20a from the side of the base belt 20 at the intermediate position between the drive wheel 27 and the driven wheel 28, the face plate 31 presses the face plate 31 in a plane. To be Therefore, in the grinding part of the part, the tips 20 of the many grinding part pieces 20b are formed.
The incision is made on the surface 51 to be machined by the c-line in a planar manner, and the concavo-convex state caused by the corrugated wear can be ground flat and can be corrected to a level state. Of course, by properly selecting the traveling speed of the traveling carriage 11, the grinding can be effectively performed, and the ground surface can be finished to be smooth.

The grinding belt 20 is, as described above,
Since the tips 20c of a large number of grinding pieces 20b are gradually shifted in a free state and are superposed,
Abrasive grains that are worn away by grinding are eliminated together with chips and do not cause clogging, and are updated by the part that follows sequentially with the grinding base cloth to which the abrasive grains adhere, and a new grinding part is always maintained continuously. It does not deteriorate the grinding function. Therefore, the work can be continuously performed for a long time.

Thus, the rail 50 in which the corrugated wear has occurred
When the work of removing the top surface of the rail 50 is completed, the grinding belt 20 can be pulled away from the top surface of the rail 50 by pulling up the grinding support frame 18 by the operating cylinder 16 of the lifting mechanism 14, so that the grinding belt 20 is moved to another position. When the work is to be continued, the traveling carriage 11 may be moved to the relevant position and operated again as described above.

In the above description, the driving power source of the grinding belt 20 is operated by being supplied with electric power from the towing vehicle side, and also on the traveling carriage (power generator with engine,
Or equipped with a battery). Further, as a drive source of the operation cylinder of the lifting mechanism, a compressor is used when air is used and a hydraulic unit is mounted on a traveling carriage when hydraulic pressure is used, and these are controlled and operated by a control device. Illustrations of the above devices are omitted.

In the above, the case where the grinding belt 20 of the rail upper surface grinding device 10 is operated with respect to one rail is explained. However, since the traveling carriage 11 is symmetrically arranged on the left and right sides, the left and right sides are both arranged. The grinding work can be performed at the same time. In this case, the grinding operation can be selectively performed depending on the state of the corrugated wear of the rail 50. Therefore, the traveling carriage 11 can be moved to efficiently perform the grinding work in the section where the rail 50 needs to be corrected.

The outer peripheral surfaces of the drive wheel 27 and the driven wheel 28 around which the grinding belt 20 is wound are
Both of them are made of a material having wear resistance and are formed to have a medium height, so that they can be driven in a tensioned state and can be reliably driven without meandering even if a large load accompanying grinding acts. . In addition, a guide roller 29 with a collar is additionally provided to maintain the winding posture of the grinding belt 20 normally. Further, the grinding biasing means 30 for the grinding belt 20 is arranged such that the holding member for supporting the face plate 31 intersects the traveling direction of the grinding belt 20 with respect to the support arm attached to the grinding support frame 18 as described above. Since it is swingably supported, even if the upper surface of the rail 50, which is the surface to be cut, is inclined, the grinding force can be applied to the grinding belt 20 correspondingly, and the grinding can be performed immediately according to the situation at the site. It is possible to automatically perform normal work without difficulty.

FIG. 6 is a schematic view of a device for connecting a plurality of rail upper surface grinding devices to perform rail retouching work.

In this embodiment, a plurality of rail upper surface grinding devices 10 according to the above-mentioned embodiment are connected and knitted. Therefore, the configurations of the rail upper surface grinding device 10 are denoted by the same reference numerals as those in the above-described embodiment, and detailed description thereof will be omitted.

The plurality of rail upper surface grinding devices 10 are, as described above, the traveling carriage 1 which can move on the rails 50 of the track.
On the upper surface of the rail 50, a grinding belt 20 is supported on a pair of left and right grinding support frames 18 which can be moved up and down, and is driven by a drive motor 19 attached to the grinding support frames 18. It was prepared facing each other,
Plural units of the same structure are connected at a connecting portion so that they can be towed. The drive of each of the rail top surface grinding devices 10 is electrically controlled by a well-known means so that a separately prepared drive control device can individually or plurally drive or selectively drive one side or both sides.

In order to perform the grinding work of the rail 50 by connecting and operating the plurality of rail upper surface grinding devices 10, the respective grinding support frames 18 are moved to the operation cylinder 16 of the lifting mechanism 14 when moving to the work site. To raise and
With the grinding belt 20 separated from the upper surface of the rail 50, the traveling carriage 11 is towed and moved by the towing vehicle. At the target work site, when the grinding condition is selected by the drive controller and all the grinding belts 20 are driven and ground according to the work object, each grinding support frame 18 is lowered by the lifting mechanism 14 and the grinding belt 20 is moved. Is driven to grind all at once. If only one rail is provided, the grinding belt 20 on the corresponding side is made operable.

In this way, when the traveling carriage 11 is made to grind with the grinding belt 20 while traveling at a low speed, the plurality of rail upper surface grinders 10 make a plurality of grinding belts for one rail 50 (each rail on both sides). Since 20 will operate similarly and perform grinding, the grinding amount by the grinding belt 20 at the frontmost position in the traveling direction is at least added to the previous grinding amount by the grinding belt 20 at the next position. The upper surface of the rail 50 is ground by the grinding amount. Therefore, when the amount of grinding by each grinding belt 20 is at least the number of connected grinding devices is large, the total amount of grinding can be increased, and in each grinding part, as described above, the grinding is performed in a plane. As a result, the grinding speed can be increased as a result. In other words, the grinding efficiency can be remarkably improved. Therefore, it is possible to perform a wide range of work on the rail upper surface, which is generally performed during train suspension hours, in a short period of time. The secondary effect of facilitating the assignment to the maintenance work can be obtained.

Although not shown in the drawings, in the above-described embodiment, the mounting structure of the vertical support shaft 15 of the structure part that supports the grinding support frame and moves up and down by the elevating mechanism has the grinding belt at the base side of the rail head side surface. It is possible to grind the gauge corner part of the rail head by tilting the grinding support frame to the required angle by using a pivotal structure that can be tilted up and down in the width direction of the track so that it can be tilted toward .

In the above description, the traveling vehicle is driven by the towing vehicle, but it is also possible to provide the traveling vehicle with a traveling device so that the traveling vehicle can travel by itself. Further, in some cases, it may be of a manual type in which the grinding work is performed while manually moving it. Furthermore, it is also possible to remove the traveling carriage and suspend it from the chassis of a train (work vehicle or the like) so that grinding can be performed. In this case, the vehicle supporting the grinding support frame / grinding belt and the lifting means thereof corresponds to the traveling carriage of the embodiment. It goes without saying that all of these formats belong to the technical scope of the present invention.

[Brief description of drawings]

FIG. 1 is a front view of a rail upper surface rectifying device of the present embodiment.

FIG. 2 is a diagram showing a part of the plane of FIG.

FIG. 3 is an enlarged sectional view taken along line AA of FIG.

FIG. 4 is an enlarged cross-sectional view showing a grinding biasing means of the grinding belt.

FIG. 5 is a perspective view showing a part of a grinding belt.

FIG. 6 is a schematic view of an apparatus for connecting a plurality of rail upper surface grinding apparatuses to perform rail retouching work.

[Explanation of symbols]

10 Rail top grinding machine 11 traveling cart 12 wheels 14 Lifting mechanism 15 Vertical support shaft 16 Operation cylinder 17 Guide 18 Grinding support frame 18a Main member 18b Sub member 19 Drive motor 20 grinding belt 20b Grinding piece 20c Tip of grinding piece 24 drive shaft 25 Driven shaft 26 Take up 27 drive wheel 28 Driven wheel 30 Grinding urging means 31 faces 32 holding member 33 Elastic body 34 Presser plate piece 35 pivot pin 36 Support arm 50 rails 51 Rail work surface

   ─────────────────────────────────────────────────── ─── Continued front page    (71) Applicant 000227445             Nitrex head office             184 Koyo, Taketoyo-cho, Chita-gun, Aichi prefecture (72) Inventor Takeshi Miyamoto             2-1 Yamadaoka, Suita City, Osaka Prefecture, Osaka University (72) Inventor Noriyuki Shinoda             1-2-4 Mei Station Nakamura-ku, Nagoya-shi Nako             Inside Ya Railway Co., Ltd. (72) Inventor Kazuhiko Ono             1-2-4 Mei Station Nakamura-ku, Nagoya-shi Nako             Inside Ya Railway Co., Ltd. (72) Inventor Eizo Sakie             1-2-4 Mei Station Nakamura-ku, Nagoya-shi Nako             Inside Ya Railway Co., Ltd. (72) Inventor Takao Shirota             1-2-4 Mei Station Nakamura-ku, Nagoya-shi Nako             Inside Ya Railway Co., Ltd. (72) Inventor Takahiko Nuriya             Aichi prefecture Taketa-cho Taketoyo-cho character 184 address small stock             Company Nitrex headquarters (72) Inventor Satsuya Yomitsu             Osaka Prefecture Moriguchi City Kajimachi 4-50-3 (72) Inventor Hidenobu Yamano             3-13-7 Makinonishi, Hirakata-shi, Osaka F-term (reference) 2D057 BA26                 3C058 AA05 AA09 AA12 CA01 CB01

Claims (7)

[Claims] 1. An endless grinding belt wound around at least two rotating bodies arranged at required intervals and driven on a grinding operation side in parallel with a work surface, and the grinding between the rotating bodies. A traveling support provided with a grinding urging means for urging a grinding force by planarly pressing a part of the belt against a work surface, and a guide means for supporting the grinding belt and allowing it to travel along the work surface. The grinding belt has a body, and a large number of grinding cloth pieces formed by adhering innumerable abrasive grains on the surface of the grinding belt are formed on the base belt with the tip thereof being inclined with respect to the width direction of the work surface and being gradually shifted. A rail rail upper surface rectification device having a superposed configuration. 2. The grinding belt is brought into contact with and detached from a work surface by an elevating means attached to the traveling support, and a grinding portion is ground by a pressing force of the grinding urging means. The rail upper surface rectifying device according to claim 1, wherein 3. The traveling support includes a traveling carriage that can travel along rails on a track, and a grinding support frame that is guided by a vertical support shaft standing upright on the traveling carriage to be lifted and lowered by an elevating mechanism. 3. The rail rail upper surface rectifying device according to claim 1, wherein the grinding belt, the driving mechanism therefor, and the grinding urging means are supported by the grinding support frame. 4. The face plate having a required area is disposed between the support positions of the rotating body that stretches the grinding belt and is pressed against the rear side of the grinding portion by the grinding belt. The rail of the railway according to any one of claims 1, 2 and 3, further comprising: an elastic body that is provided behind the face plate and applies a pressing force, and is attached to the traveling support. Top surface trimming device. 5. The rail rail upper surface rectifying device according to claim 4, wherein the face plate of the grinding urging means is made of ceramic at a contact portion with the grinding belt. 6. The grinding biasing means is supported by a support arm provided on a grinding support frame so as to be swingable in the width direction of the grinding belt so that the face plate contacts the back side of the grinding belt. The rail upper surface rectifying device according to claim 1, 3, 4, or 5, which is configured. 7. An endless grinding belt wound around at least two rotating bodies arranged at required intervals and driven on a grinding operation side in parallel with a work surface, and the grinding belt between the rotating bodies. A traveling support provided with a grinding urging means for urging a part of the blade in a plane against a surface to be urged to urge a grinding force, and a guide means for supporting the grinding belt and allowing it to travel along the surface to be lapped. The rail upper surface trimming device according to claim 1, wherein a plurality of grinding devices including the above are arranged at required intervals.