JP5010955B2 - Vehicle body height displacement detector and detection mechanism - Google Patents

Description

  The present invention relates to a vehicle body height displacement detector and a detection mechanism, and more particularly, is provided between a vehicle body of a track inspection vehicle and a traveling carriage for measuring a track displacement amount or correcting a trolley wire displacement amount. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vehicle body height displacement detector that can reduce the accident of breakage of a detection arm of a vehicle body height displacement detector that obtains a vehicle body height displacement.

In the track constituting the railroad track, the left and right rails are deviated from the reference position by train operation or the like. This deviation is called trajectory error, and five items are defined: (1) street error, (2) high / low error, (3) gauge error, (4) level error, and (5) flatness error.
In the main line where many commercial trains are operated, rail displacement measuring devices are installed on vehicles with almost the same standards as commercial vehicles, so to make up a large track inspection vehicle and run at high speeds. An orbital error is being measured. However, large track inspection cars are not suitable for quiet line districts where the number of train operations is small, or side lines within stations, so medium or small track inspection cars are used.
As a rail displacement amount measuring device mounted on these vehicles, there are a mechanical type in which a measuring wheel or a roller is brought into contact with the rail and a non-contact type optical device.
Apart from these, the displacement amount of the trolley wire is measured by an optical measuring device.
The measured values obtained by measuring the rail displacement and the trolley wire displacement need to be corrected according to the inclination of the left and right vehicle bodies. A vehicle body height displacement detector for detecting a change in vehicle body height with respect to a vehicle body in a reference state that is in a horizontal state is mounted (Patent Document 1).
JP-A-9-163502

A vehicle body height displacement detector usually detects a vehicle by attaching a detector body to the vehicle body side and fixing a rotating detection arm to the traveling vehicle (carriage axle box) so as to be rotatable. The detection arm receives an impact generated between the rail and the wheel via the axle box. For this reason, conventionally, the impact is absorbed by a two-stage connecting arm in which the detection arm of the detector on the vehicle body side is linked to the carriage axle box via a hinge that allows rotation in the left-right direction.
FIG. 4 is an explanatory diagram of the vehicle body height displacement detector 3. 20 is a rail, 11 is a vehicle body to which the vehicle body height displacement detector 3 is attached, 12 is a traveling carriage, 13 is a traveling wheel, and 14 is a carriage axle box having a bearing 14a. The bearing 14a rotatably supports the wheel 16 via the axle 15 (see FIG. 3) of the traveling wheel 13.
The vehicle body height displacement detector 3 is an angle sensor that detects the height displacement by converting it into an angular displacement of the rotating arm, and includes a detection arm 1 and a synchro rotation angle detector 2. The horizontal arm 1a and the inclined arm 1b are linked to each other via a hinge 1c, and are attached to the carriage axle box 14 with a degree of freedom in the left-right direction via a hinge 14b provided at the top of the bearing 14a. ing.
The synchro rotation angle detector 2 is coupled to the vehicle body 11 with a degree of freedom in the left-right direction via a bracket 11a by a hinge 2a, and has a synchro oscillator inside, and an electric signal corresponding to the amount of rotation of the synchro rotation shaft 2b. Is generated as a detection signal.
The hinge 1c, the hinge 2a, and the hinge 14b are each composed of a ball bearing.

The detection arm of the two-stage connecting arm connection linked by a hinge as shown in FIG. 4 relaxes the detection arm by a hinge having a degree of freedom in the left-right direction against the impact between the rail and the wheel. However, a twisting phenomenon may occur between the vehicle body and the traveling carriage due to the approach to the lead-in line on the conventional line and the conditions of the track facility. Such a twist cannot be absorbed by a hinge having a degree of freedom in the left-right direction. Therefore, when a large twist occurs, a sudden load is applied to the detection arm, and the detection arm of the two-stage connecting arm structure is damaged.
In order to avoid such a situation, even if the detection arm is connected to a three-stage arm, the torsion cannot be absorbed, and the strength of the arm is weakened and the detection accuracy in the vertical direction is lowered. Twist applies a large shear stress to the detection arm, but the arm that detects the height direction cannot be slid up and down to absorb it. Detection accuracy is lowered, and destruction of the buffer mechanism itself becomes a problem.
An object of the present invention is to solve such problems of the prior art, and to reduce the damage accident of the detection arm of the displacement detector in the height direction of the vehicle body mounted on the track inspection vehicle. An object of the present invention is to provide a vehicle body height displacement amount detector and a detection mechanism that can be used.

  The present invention provides a vehicle body height displacement detector and detection mechanism that achieves the above object, and the configuration thereof is provided between the vehicle body of the track inspection vehicle and the traveling vehicle, and is arranged in the vehicle body height direction. In a vehicle body height displacement detector that detects a displacement by converting a displacement according to a rotation angle of a detection arm that rotates in a height direction, the detector has a torsional elasticity in a direction perpendicular to the longitudinal direction and has a longitudinal direction. A plate-like elastic arm member having a thickness that does not deform and having a predetermined width, and a rigid arm member having a predetermined length that has a rigidity that does not deform in either the longitudinal direction or the direction orthogonal thereto are orthogonal to the longitudinal direction. The detection arm is configured as a link coupling that allows rotation in the direction.

As described above, in the present invention, any one of the two-stage detection arms is a plate-like elastic arm member, so that the torsion of the arm generated between the vehicle body and the traveling carriage can be reduced. The accuracy in the height direction of the arm can be maintained by the plate-like elastic arm that absorbs and twists.
In particular, if the plate-like elastic arm is a plate spring having a predetermined thickness and width, or an arm having a plate spring in part, the plate spring will twist even if a torsion phenomenon occurs between the vehicle body and the traveling carriage. Since it is received and twisted, an excessive load is absorbed without being applied to the remaining arms, and the damage accident of the detection arm is suppressed.
In particular, in the case of a leaf spring, the relationship in the height direction of the vehicle is maintained even if it is twisted. If this is a horizontal arm, the position in the height direction is held at the axial center position of the leaf spring. Even in the case of an inclined arm, it has rigidity, so it is not compressed and displacement in the longitudinal direction hardly occurs.
As a result, it is possible to reduce the damage accident of the detection arm of the vehicle body height displacement amount detector of the vehicle without reducing the accuracy of detecting the displacement amount in the vehicle body height direction.

FIG. 1 is an explanatory view of a vehicle body height displacement detection mechanism of a vehicle according to an embodiment to which the present invention is applied. FIG. 2 is a vehicle body height displacement detection mechanism of a vehicle according to another embodiment to which the present invention is applied. FIG. 3 and FIG. 3 are explanatory views of the mounting state of the vehicle body height displacement amount detector and the inclined state of the vehicle body.
The same components as those shown in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 3, in the trajectory inspection vehicle 10, reference numeral 4 denotes a vehicle body height displacement detector, which is provided between the vehicle body 11 and the traveling carriage 12 corresponding to the left and right rails 20, respectively. Yes.
The left and right vehicle body height displacement detectors 4 and 4 constitute a vehicle body height displacement detection mechanism 5.
d1 and d2 are displacement amounts between the vehicle body 11 and the traveling carriage 12 respectively measured by the detection signal detected by the vehicle body height displacement detector 4 at this time.
Each detection signal from the vehicle body height displacement amount detector 4 is extracted as an output voltage via a conversion control circuit 17 provided on the vehicle body 11 side, and passes through an A / D conversion circuit (A / D) 18. The data is input to the data processor 19. The displacement amounts d1 and d2 calculated by the data processing device 19 are used for correction processing of each measurement value obtained by the rail displacement amount measuring device or the trolley wire displacement amount measuring device.

In FIG. 1, reference numeral 6 denotes a detection arm of the vehicle body height displacement amount detector 4, which is configured by connecting a horizontal arm 6 a and an inclined arm 6 b via a hinge 8.
The horizontal arm 6a is a plate-like elastic arm member having a predetermined width and thickness having torsional elasticity in a direction orthogonal to the longitudinal direction and not deforming in the longitudinal direction, and a box having parallel leaf springs 7a and 7b. It consists of a frame 7.
The two leaf springs 7a and 7b of the box frame 7 have a box-type structure in which both ends are fixed to the link coupling fittings 7c and 7d, respectively, and have a rectangular space inside. Thereby, the twist with respect to the arm which generate | occur | produces between a vehicle body and a traveling trolley can be absorbed by the box frame 7 being twisted, and the accuracy in the height direction of the arm can be maintained in the twisted state.
The parallel leaf springs 7a and 7b are made of SUS and have a thickness of about 2 mm, a width of 40 mm, and a length of about 300 mm. The link fittings 7c and 7d are made of steel members or cast iron.
In the figure, the parallel leaf springs 7a and 7b are arranged in the left-right direction with respect to the traveling direction, but they may be arranged in the up-down direction with respect to the traveling direction. Or you may rotate along an arm axis | shaft and may arrange | position with a predetermined angle.

On the other hand, the inclined arm 6b is made of a steel member or cast iron, and is a rigid arm member of a predetermined length having rigidity that does not deform in the longitudinal direction or the direction orthogonal thereto, and the end portion is curved. Is formed.
The link coupling fitting 7c is integrally fixed to the outer cylinder 8a of the hinge 8. The curved end of the inclined arm 6b is integrated with the link coupling fitting 7e and fixed to the outer cylinder 8b of the hinge 8. Supports the inclined arm 6b. The shaft 8c of the hinge 8 passes through the outer cylinder 8a of the hinge 8 and the outer cylinder 8b provided on the lower side thereof, and allows the outer cylinder 8a and the outer cylinder 8b to rotate.
The opposite end of the inclined arm 6b that is curved is integrated with the link fitting 7f and is linked to the axle box 14 by a hinge 14b.
In addition, the hinge 8 is comprised with the ball bearing.
On the other hand, the link fitting 7d is fixed to the synchro rotation shaft 2b of the synchro rotation angle detector 2 by bolting, and supports the horizontal arm 6a so as to be rotatable.

In this way, by supporting the inclined arm 6b by using the horizontal arm 6a as two parallel leaf springs 7a and 7b, the parallel leaf springs 7a and 7b even if a twist phenomenon occurs between the vehicle body 11 and the traveling carriage 12. Receives the twist and twists, and the twist is absorbed. As a result, the damage accident of the detection arm 6 is suppressed. Of course, when the twist is released from the traveling carriage 12, the horizontal arm 6a returns to its original state as shown in the figure due to its elasticity.
In the case of a leaf spring, the relationship in the height direction of the vehicle is maintained even if it is twisted. In particular, when the horizontal arm 6a is a leaf spring, the center position of the leaf spring is held as one in the height direction, and even when it is inclined, it is not compressed, so that displacement in the longitudinal direction hardly occurs. .

FIG. 2 is an explanatory view of a vehicle body height displacement detection mechanism of a vehicle according to another embodiment to which the present invention is applied. The detection arm 9 is composed of a horizontal bar arm 9a and an inclined arm 6b.
The horizontal bar arm 9a is linearly formed by inserting and coupling one leaf spring 9d between the link coupling metal 7d by a coupling member 9c provided at the end of the horizontal arm 9b slightly shorter than the horizontal arm 6a of FIG. Arm.
As a result, even if a torsion phenomenon occurs between the vehicle body 11 and the traveling carriage 12 as in the above embodiment, the leaf spring 9d receives the torsion and twists, and the torsion is absorbed here, so that the detection arm 9 is damaged. Accidents are suppressed. Of course, also in this case, if the torsion is released from the traveling carriage 12, the horizontal bar arm 9a returns to its original state due to its elasticity.
The leaf spring 9d may be rotated by 90 ° along the arm axis. It may be inclined.

As described above, in the embodiment, the horizontal arm and the inclined arm are combined with a link, but the inclined arm may of course be a vertical arm.
Moreover, the horizontal arm of an Example may be inclined and it is not limited to the direction being horizontal. In the present invention, any one of the two-stage arm couplings of the link coupling may be a torsional elastic member that absorbs the torsion received from the axle box side. It can also be a spring.

FIG. 1 is an explanatory diagram of a vehicle body height displacement detection mechanism for a vehicle according to an embodiment to which the present invention is applied. FIG. 2 is an explanatory view of a vehicle body height displacement detection mechanism of a vehicle according to another embodiment to which the present invention is applied. FIG. 3 is an explanatory view of the mounting state of the vehicle body height displacement detector and the inclination state of the vehicle body. FIG. 4 is an explanatory diagram of a conventional vehicle body height displacement amount detection mechanism.

Explanation of symbols

1, 6, 9 ... detection arm, 2 ... synchro rotation angle detector,
2b ... Synchro rotation shaft,
3, 4 ... Body height displacement detector,
5 ... Body height displacement detection mechanism,
1a, 6a, 9b ... horizontal arm, 1b, 6b ... inclined arm,
1c, 2a, 8, 14b ... hinges,
7a, 7b ... leaf springs, 7c, 7d ... link coupling fittings,
10 ... orbit inspection vehicle,
DESCRIPTION OF SYMBOLS 11 ... Car body, 12 ... Running cart, 13 ... Running wheel, 14 ... Dolly box
14a ... Bearing, 15 ... Axle, 16 ... Wheel,
17 ... Conversion control circuit, 18 ... A / D conversion circuit (A / D),
19 ... data processing device, 20 ... rail.

Claims (4)

Vehicle body height displacement detected by converting the amount of displacement in the vehicle body height direction between the vehicle body of the track inspection vehicle and the traveling carriage according to the rotation angle of the detection arm that rotates in the height direction. In quantity detector,
A plate-like elastic arm member having a predetermined width and having a torsional elasticity in a direction orthogonal to the longitudinal direction and a rigidity that does not deform in the longitudinal direction, and a rigidity that does not deform in the longitudinal direction and in a direction orthogonal thereto A vehicle body height displacement detector comprising the detection arm as a link coupling allowing a rigid arm member having a predetermined length to rotate in a direction orthogonal to the longitudinal direction.   2. The plate-like elastic arm member is a horizontally disposed leaf spring or an arm member having a leaf spring in part, and the rigid arm member is an arm that is inclined or provided in a vertical direction. The vehicle body height displacement detector according to claim.   3. The vehicle body height displacement detector according to claim 2, wherein the plate-like elastic arm member is composed of two parallel leaf springs each having both ends fixed to link coupling metal fittings.   A vehicle body height displacement detector according to any one of claims 1 to 3, wherein the vehicle body height displacement detector is provided between the vehicle body and the traveling carriage corresponding to the left and right rails, respectively. Body height displacement detection mechanism.

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