JP4067761B2 - Simple orbit inspection vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention travels on rails by running wheels provided at both ends of a pair of reference beams, and continuously shifts the rails with a pair of left and right measuring wheels provided at the center of the reference beams. More particularly, the present invention relates to a simple track inspection and measurement vehicle that accurately detects a rail height deviation.
[0002]
[Prior art]
As shown in FIG. 1, this type of conventional simple track inspection and measurement vehicle includes symmetrical reference beams 1a and 1b and reference beams 1a arranged at substantially the same distance as the rails of the two rails Ra and Rb. , 1b, and a vehicle body 3 composed of a connecting beam 2 for connecting the central portions of the reference beams 1a, 1b. A pair of left and right height measuring wheels provided with wheels 4 and moving up and down to contact the treads T of the rails Ra and Rb at the center of the reference beams 1a and 1b to detect the deviation of the rails Ra and Rb. 5 was provided. Here, as shown in FIG. 4, the pair of left and right height measurement wheels 5 are formed in a cylindrical shape that rotates around a rotation shaft 51 provided in parallel with the ground.
[0003]
In order to measure the deviation of the two laid rails Ra and Rb by using such a simple track inspection and measuring vehicle, as shown in FIG. A force F is applied to the hand pressing portion 7 mounted on the Rb and attached to the vehicle body 3. Then, the simplified track inspection vehicle travels on the rails Ra and Rb by the traveling wheels 4. At this time, the height measuring wheels 5 and 5 provided at the center of the reference beams 1a and 1b are moved up and down so as to come into contact with the treads T of the two rails Ra and Rb by the coil spring 8 shown in FIG. The height sensor 9 shown in FIG. 5 detects this amount of deviation, so that the height deviation of the rails Ra and Rb is continuously detected. The continuously measured displacement data is subjected to double length calculation processing by a data processing device (not shown) mounted on the vehicle body 3 and converted into a 10 m string, thereby laying two rails. Ra and Rb high and low deviations were measured.
[0004]
[Problems to be solved by the invention]
However, in such a simple type track inspection vehicle in which the deviation of the rail is continuously measured by the conventional pair of left and right measuring wheels 5 and 5, the simple type track inspection and measurement that travels on the rails Ra and Rb is performed. When the vehicle detects the deviation of the rails Ra and Rb, the four front and rear traveling wheels 4 and the pair of left and right measuring wheels 5 completely contact the treads T of the two rails Ra and Rb, respectively. However, it is difficult to align the rotation axes of the four traveling wheels 4 with the axes aligned on the same plane, and the pair of left and right height measuring wheels 5 are formed in a cylindrical shape. Therefore (see FIG. 4), when the left and right rotating shafts 51 are not aligned on the same straight line, the pair of left and right height measuring wheels 5 and 5 are in contact with the treads T of the two rails Ra and Rb, respectively. The part may shift inward or outward, The case could not be gage accurately excursion of the rails Ra, Rb.
[0005]
In general, the laid rail gradually wears as the train repeatedly passes, so the inside of the tread surface T of the two rails Ra, Rb is worn down, and the tread surface T of the rails Ra, Rb becomes smaller. It may be in a state that is not parallel to the ground. When the above-described simplified track inspection vehicle is used on such rails Ra and Rb, the height measuring wheel 5 that moves up and down by the coil spring 8 shown in FIG. 4 is the side where the tread T of the rails Ra and Rb is not worn down. In other words, since it comes into contact with the outside of the rails Ra and Rb, there are cases where the deviation of the two rails Ra and Rb cannot be accurately measured.
[0006]
Furthermore, since the simple track inspection and measurement vehicle involves the work of being put on and taken down from the rail when in use, the weight of the vehicle body 3 has been reduced by manufacturing it with relatively light aluminum. 3 has low rigidity, and the reference beams 1a and 1b and the connecting beam 2 may be slightly bent while traveling on the rail. As a result, the rotating shaft 51 of the pair of left and right measuring wheels 5 shown in FIG. 4 cannot align the left and right axes on the same line and accurately measures the deviation of the two rails Ra and Rb. There was a case that could not be done.
[0007]
Therefore, the present invention addresses such problems, and each of the pair of left and right height measuring wheels is always in contact with the tread surface of the two rails at a predetermined position, and the rail height deviation can be accurately measured. The purpose is to provide a type track inspection vehicle.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a simplified track inspection vehicle according to the present invention includes a pair of reference beams arranged at substantially equal intervals between the rails of the two rails, and a connecting beam that connects the central portions of the reference beams. The reference beam is provided with a traveling wheel that rotates in contact with the tread of the rail at both ends of the reference beam, and moves up and down to contact the tread of the rail at the center of the reference beam. In the simple type track inspection vehicle having a pair of left and right height measuring wheels for detecting the deviation of the rail, the pair of left and right height measuring wheels has a width of a contact portion that contacts the tread surface of the rail. Forming a portion narrower than the width of the tread surface, forming a portion outside the contact portion in a gently tapered shape, and forming a portion inside the contact portion in a shape not in contact with the tread surface of the rail , and , The contact part is at the center of the rail tread It is obtained by positioning in contact with location.
[0009]
With this configuration, the contact with the width of the contact portion in contact with the tread of the rail narrower than the width of the tread of the rail, forming an outer portion gently tapered respectively from the contact portion a pair of right and left height measuring wheel an inner portion formed in a shape which is non-contact and tread of the rail from the parts, by positioning as the contact portion contacts located approximately at a central portion of the tread of the rail The portion outside the contact portion and the portion inside the contact portion do not contact the rail tread, and only the contact portion formed narrower than the width of the rail tread is always the approximate center of the two rail treads . Touch the part .
[0010]
The upper Symbol pair of high and low measuring wheel is obtained of about 2mm width of the contact portion. As a result, even if the treads of the two rails are not parallel to the ground due to the wear of the rails, or the rotation axes of the pair of left and right height measuring wheels are on the same line due to the deflection of the reference beam and the connecting beam. Even if they are not arranged side by side, only the contact portion always contacts the tread surface of the two rails at a predetermined portion, and the durability of the contact portion having a width of about 2 mm is maintained.
[0011]
The pair of left and right height measuring wheels has a taper angle of about 7 °. As a result, even if the treads of the two rails are not parallel to the ground due to the wear of the rails, or the rotation axes of the pair of left and right height measuring wheels are on the same line due to the deflection of the reference beam and the connecting beam. Even if they are not arranged side by side, the tapered portion having the taper angle of about 7 ° does not come into contact with the tread surface of the rail.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the entire simplified track inspection vehicle according to the present invention. This simple track inspection and measurement vehicle is driven on the two rails Ra and Rb that are laid by manual operation, so that various deviations of the rails Ra and Rb, such as street deviation, high and low deviation, and gauge deviation. The position, level deviation, and flatness deviation are continuously measured, and includes a vehicle body 3, a traveling wheel 4, and a height measuring wheel 11.
[0013]
The vehicle body 3 is loaded with a data processing device for performing double length arithmetic processing on various displacements of the rails Ra and Rb based on the data of the displacement amounts of the rails Ra and Rb continuously measured. The pair of reference beams 1a and 1b and the connecting beam 2 are formed in an H shape. The symmetrical reference beams 1a and 1b have a length corresponding to a measurement string L of 1.25 m, for example, and are made of a light and highly durable member such as an aluminum alloy. Such reference beams 1a and 1b are arranged at an interval substantially equal to the gap between the two rails Ra and Rb laid. At a predetermined position of the vehicle body 3, for example, the reference beam 1a, a hand pushing portion 7 for manually pushing the simple track inspection vehicle is attached.
[0014]
The connecting beam 2 connects the pair of reference beams 1a and 1b at the center of each other, and is configured to be extendable and contractable so that the vehicle body 3 runs corresponding to the rails of the two rails Ra and Rb. Has been. The connecting beam 2 has, for example, a cylindrical pipe 22 whose one end is fixed to the reference beam 1 b with a connection portion 21, and one end which is attached to the reference beam 1 a with a connection portion 23 and the other end is fitted into the pipe 22. And a spring 26 interposed between the other end portion 25 of the pipe 22 and the connecting portion 23 of the rod 24 so as to be able to expand and contract as a whole. For example, the structure of the connecting portion 23 for attaching the rod 24 to the reference beam 1b is configured such that the reference beam 1b rotates by a minute angle with respect to the connecting beam 2.
[0015]
Then, traveling wheels 4 are provided at both ends of the reference beams 1a and 1b, respectively. The four front, rear, left, and right traveling wheels 4 rotate in contact with the respective treads T of the rails Ra and Rb around a rotation axis in which axes are aligned on the same plane. When the simplified trajectory inspection vehicle is placed on the two rails Ra and Rb and a certain force F is applied to the hand pushing portion 7, the simplified trajectory inspection vehicle is adapted to the four traveling wheels 4. As a result, the vehicle travels on the rails Ra and Rb. In this case, the four front and rear left and right four traveling wheels 4 are arranged on the inner lower side of the wheels 6 as rotating in contact with the inner side surfaces of the rails Ra and Rb around the rotation axis perpendicular to the ground as in the conventional example. Are provided. As a result, the simplified track inspection vehicle can stably travel on the rails Ra and Rb.
[0016]
Further, height measuring wheels 11 and 11 are provided at the center of the pair of reference beams 1a and 1b, respectively. As shown in FIG. 2, the height measuring wheel 11 rotates around the rotating shaft 12 parallel to the ground in contact with the tread surface T of the rails Ra and Rb. The height measuring wheel 5 shown in FIG. Similarly, the coil spring (not shown) moves up and down so as to come into contact with the tread surface T of the two rails Ra and Rb. Then, the displacement of the rails Ra and Rb is continuously detected by detecting the displacement amount by the height sensor 9 shown in FIG.
[0017]
Here, in the present invention, as shown in FIG. 2, the height measuring wheel 11 has a width W of the contact portion 13 that contacts the tread surface T of the rail Ra, Rb, and the width T of the tread surface T of the rail Ra, Rb. narrower than the width, the inner portion than the contact portion 13 are not in contact with the tread surface T of the rail Ra, Rb together form respective gently tapered portion 14 to the outer portion than the contact portion 13. As a result, the portion outside the contact portion 13 and the portion inside the contact portion 13 do not come into contact with the tread surface T of the rails Ra and Rb, and the width W is formed narrower than the width of the tread surface T of the rails Ra and Rb. Only the contact portion 13 thus touched always comes into contact with the tread surface T of the two rails Ra and Rb. Therefore, even when the rotation shafts 12 and 12 of the pair of left and right measuring wheels 11 and 11 are not aligned on the same line, the pair of left and right measuring wheels 11 and 11 are treaded on the two rails Ra and Rb. T can be contacted at a predetermined site. In addition, although the part inside the contact part 13 in FIG. 2 is a taper shape, it is not restricted to this, What kind of shape may be sufficient if it does not contact the tread surface T of rail Ra, Rb.
[0018]
Further, the pair of right and left height measurement wheels 11 and 11, as shown in FIG. 2, is positioned to contact located approximately at a central portion of the contact portion 13 garage Lumpur Ra, Rb tread T Yes. As a result, when the simplified trajectory inspection vehicle is run, the pair of left and right height measurement wheels 11 and 11 are arranged such that the contact portion 13 always passes over the substantially central portion of the tread surface T of the rails Ra and Rb. The height deviation of the rails Ra and Rb can be measured. Therefore, even if the treads T of the two rails Ra and Rb are worn due to repeated passage of the train and are not parallel to the ground, the pair of height measuring wheels 11 and 11 are not affected by the rails Ra and Rb. It passes through the height of a predetermined part on the tread surface T of the rail, and can accurately measure the height deviation of the rails Ra and Rb. Orbital error can be minimized even if converted to.
[0019]
In order to reduce the width W of the contact portion 13 of the pair of left and right measuring wheels 11 contacting the tread surface T of the rails Ra and Rb as much as possible and maintain the durability of the contact portion 13, the width is reduced. It is desirable to be about 2 mm. In addition, the inclination of the rail tread surface T that is worn away by repeated passage of the train is an angle smaller than about 7 °, so that only the contact portion 13 always contacts the two rails. It is desirable that the taper angle θ of the tapered portion 15 in the height measuring wheel 11 is about 7 °.
[0020]
In addition, as shown in FIG. 2, the measurement is performed in contact with the inner side surfaces of the rails Ra and Rb around the rotation axis 15 perpendicular to the ground, as shown in FIG. Each wheel 16 is provided. As described above, the measurement wheel 16 can escape a flow (not shown) formed by deformation of the upper portion U of the inner side surface of the rail Ra, Rb when the train repeatedly travels on the rail Ra, Rb. Thereby, the said simple type | formula track | orbit inspection vehicle can detect and measure the deviation and the gap deviation between the rails Ra and Rb without being influenced by the above flow.
[0021]
Next, the operation of the simplified trajectory inspection vehicle configured as described above will be described with reference to FIGS. First, as shown in FIG. 2, the height measuring wheel 11 has a width W of the contact portion 13 contacting the tread surface T of the two rails Ra and Rb of about 2 mm, and a taper at a portion outside the contact portion 13. The taper angle θ of the shape portion 14 is about 7 °. As a result, even if the treads T of the two rails Ra and Rb are worn and not parallel to the ground, or because the reference beams 1a and 1b and the connecting beam 2 are bent due to their own weight, a pair of height measurement is performed. Even if the rotating shafts 12 and 12 of the wheels 11 and 11 are not aligned on the same straight line, the tapered portion 14 does not contact the tread surface T of the rails Ra and Rb. It is possible to make contact with a predetermined portion on the tread surface T of the rails Ra and Rb.
[0022]
When the simplified trajectory inspection vehicle passes through the branching device, as shown in FIG. 3, the tapered portion 14 travels on the lead rails LRa and LRb. When passing through the vessel 17, the gap Ga between the lead rail LRa and the crossing rail CR or the gap Gb between the lead rail LRb and the crossing rail CR is prevented from falling. Therefore, the traveling of the height measuring wheel 11 is stabilized, and the deviation of the two rails Ra and Rb can be measured more accurately.
[0023]
【The invention's effect】
Since the present invention configured as described above, the invention according to claim 1, the width of the contact portion in contact with the tread of the rail narrower than the width of the tread of the rail, the contact portion A pair of left and right height measurement wheels in which the outer portions are each formed in a gently tapered shape and the inner portion from the contact portion is formed in a shape not in contact with the tread surface of the rail, and the contact portion is a tread surface of the rail. By positioning so as to be in contact with the substantially central portion of the rail, the portion outside the contact portion and the portion inside the contact portion do not contact the rail tread surface, and are narrower than the width of the rail tread surface. Only the formed contact portion can always stably contact the substantially central portion of the tread of the two rails . Therefore, since the deflection of the rail can be accurately gage, it can be made extremely small errors after double precision operation process. In addition, the pair of left and right height measuring wheels detect the height deviation of the rail while the contact portion always passes over the substantially central portion of the rail tread surface. Even if the tread surface is not parallel to the ground, it is possible to contact the tread surface of the rail at a predetermined position, and the level deviation of the rail can be accurately measured.
[0025]
Further, according to the invention of claim 2, said pair of right and left height measuring wheel, by which is approximately 2mm width of the contact portion, the rail Ra of only the contact portion is always Article 2, the tread T of Rb While being able to contact, durability of this contact part can be maintained. Therefore, the pair of left and right height measuring wheels can accurately measure the height deviation of the two rails.
[0026]
Furthermore, according to the invention according to claim 3, said pair of right and left height measuring wheel, by which is approximately 7 ° taper angle of the tapered portion, the wear of the rails on the ground tread Article 2 of the rail The taper-shaped portion is not affected by the rail even if the rotation axis of the pair of left and right measuring wheels is not aligned on the same line due to bending of the reference beam or the connecting beam. Thus, only the contact portion can be in contact with the two rails. Therefore, the pair of left and right height measuring wheels can accurately measure the height deviation of the two rails.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an entire simplified track inspection and measurement vehicle according to the present invention and a conventional example.
FIG. 2 is an explanatory diagram showing a mounting structure and a shape of a height measurement wheel and a street measurement wheel of the simplified track inspection vehicle.
FIG. 3 is an explanatory plan view showing a state when the simplified trajectory inspection vehicle passes through a turnout.
FIG. 4 is an explanatory cross-sectional view showing a mounting structure and height of a conventional height measuring wheel of a simple type track inspection vehicle.
FIG. 5 is an explanatory side view showing a high and low deviation detection state of a simple type track inspection vehicle according to the present invention and a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Reference beam 2 ... Connection beam 3 ... Car body 4 ... Running wheel 6 ... Road wheel 7 ... Hand pushing part 8 ... Coil spring 9 ... Height measuring sensor 11 ... Height measuring wheel 12, 15 ... Rotating shaft 13 ... Contact part 14 ... Taper Shape part 16 ... street measurement wheel 17 ... branching device Ra, Rb ... rail T ... tread surface L ... measurement string W ... width of contact part θ ... taper angle of taper shape part

Claims (3)

It has a vehicle body composed of a pair of reference beams arranged at substantially equal intervals between the rails of the two rails and a connecting beam for connecting the central portion of the reference beam, and the rails are provided at both ends of the reference beam. A running wheel that rotates in contact with the tread surface is provided, and a pair of left and right height measuring wheels that move up and down so as to contact the tread surface of the rail and detect the deviation of the rail are provided at the center of the reference beam. In a simple track inspection vehicle,
The pair of left and right height measuring wheels are formed such that the width of the contact portion that comes into contact with the tread surface of the rail is narrower than the width of the tread surface of the rail , and the portions outside the contact portion are each formed in a gently tapered shape. A portion inside the contact portion is formed in a shape that is not in contact with the tread surface of the rail , and the contact portion is positioned so as to be in contact with a substantially central portion of the tread surface of the rail. A simple orbit inspection vehicle. Said pair of right and left height measuring wheel, simplified trajectory Kensokusha according to claim 1, characterized in that approximately 2mm width of the contact portion. The simplified track inspection and measurement vehicle according to claim 1 or 2, wherein the pair of left and right height measuring wheels has a taper angle of the tapered portion of about 7 °.

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