JPS58213905A - Level correcting apparatus of track correcting machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a leveling device for leveling a rail track.

Generally, on a rail track, the difference in height between the left and right rails on the straight section, that is, the cant value, is set to zero, and where the track is curved, the cant value is set to a predetermined cant value depending on the curvature. need to be kept.

A track leveling machine automatically levels the track while running on the rail track, and is equipped with a leveling device, a rail lifting device, and a track bed tamping device. The ratio between the detected level from the level detector and the set level from the level setter! ! 2 to install the rail lifting device,
The track bed tamping device M,2 is controlled to correct deviations in cant value due to drop in track bed ballast, etc.

Conventionally, a pendulum-type leveling device has been used as the leveling device for this type of track alignment machine, and the pendulum type is used to measure the inclination angle of the pendulum due to the height difference between the left and right rails. The current cant (+M'i) is detected, and the detected signal is amplified and used directly, for example, as a relay control output of a leveling device.

However, such conventional leveling devices using level detectors use pendulums to detect the inclination angle of the rail, so they are directly affected by the running vibrations of the track leveling device itself and the imaging of tamping. The pendulum oscillates.

As a result, the angle detection becomes unstable and cannot accurately detect the cant of the rail. Therefore, the leveling device is unable to perform appropriate level control, and the vibration of the pendulum There is a drawback that the fluctuation of the detection output due to the fluctuation of the relay increases the operating fineness of the relay and reduces its lifespan.Therefore, in order to eliminate the negative effect of the vibration of the track straightening machine, the length of the pendulum must be increased. This prevents slight movement, but at the same time, the amplitude increases and it takes time for the pendulum to settle, and it takes a long time to detect the rail cant value, which reduces the workability of the track straightening machine. It gets worse. In addition, it can be used as a level detector that can detect accurate rail cant values without being affected by the four-axis movement of conventional track straighteners. Is there a level detector at the rear of the device and this level detector is connected to the reference bar through the up rotation axis? Place this base barque from the level detector 4
There is a so-called indirect reference method in which the rail is always held horizontally with a No. 4 reference bar and the tilt of the left and right rails is detected using a potentiometer or the like from this reference bar, but the entire device is complex and often malfunctions. In addition, there are drawbacks such as high cost.Furthermore, with the leveling device, it is necessary to control the rail lifting device, etc. while comparing the detected water droplet and the set level as described in F]iJ. In this case, the cant setting by the water level regulator is performed indirectly regardless of whether it is manual or automatic setting, resulting in a setting error. In addition, this level setting device is usually installed in the driver's cab of the track straightening machine, which extends from the main body of the water leveling device, and the wiring length becomes long and the solenoid valve and motor are disconnected easily. The spark noise generated during this process becomes very loud.

The present invention was made in consideration of the above points, and even if an angle detector using a short-arm pendulum with quick response is used, it will not be affected by vibration, and will not be affected by noise entering from inside or outside the circuit. The purpose of the present invention is to provide a leveling device with a simple structure that is not influenced by The purpose is to increase the reliability of the device by using a control method.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the attached drawings. In the leveling device for a track straightening machine according to the present invention, as shown in FIG. Detector 1, Cant's reference value setting unit 2, and an operational amplifier 3 that performs a comparison between the detection number 1M of the angle detector 1 and the setting signal of the base M value setting unit 2. and a low-pass filter 4 that removes disturbances from the angle detector l, inductive noise from the line of the reference 1 direct setter 2, etc. from the output of the amplifier, and , and a relay control circuit 5 with a built-in waveform shaping circuit that sends, for example, a 1RU-RYK operation command for driving a σ11j6 electromagnetic control valve to control a hydraulic cylinder of the rail lifting device (not shown).

The operation of the leveling device for a track leveling machine according to the present invention constructed as described above will be explained below. First, an electrical signal corresponding to the inclination of the pendulum is obtained by the angle detector 1. In this case, as shown in Fig. 2(a), the detection signal of the angle detector l contains a high frequency component, which is a disturbance, because the pendulum vibrates slightly due to the vibration of the orbit adjustment machine mentioned above. . The arrow shows the detection signal and reference value setter 2.
The operational amplifier 3 compares and calculates the reference signal set by the reference signal (see FIG. 2(b)), and as shown in FIG. ) is the next stage low-pass filter 4.
sent to. Here, the reference value set by the reference value setting device 2FC is the target cant value of the rail, and it becomes zero in a straight section of the rail track, and becomes a value corresponding to the curvature in a curved section. Manually or automatically configured.

The low-pass filter 4 filters the human power signal (FIG. 2(C)) from 1 to 5 times the response frequency of the rail lifting device, that is, l.
Figure 2 (d) allows only the frequency components of ~5 Hz to pass through, filters out the high frequency components mixed in by other vibrations, etc.
) is sent to the next stage relay control circuit 5. As shown in FIG. 2(e), the relay control circuit 5 compares the human input signal with a preset base ω level L, and operates the relay RY when the input reaches the reference level LK. Send a command (see Figure 2 (f)),
This energizes the relay RY and sends a closing command to the electromagnetic control valve of the hydraulic cylinder of the rail lifting device, stopping the rail lifting operation6. The reference level L of the relay control circuit 50 is set to provide the operating conditions for the relay RY.

As described above, the leveling device for the track leveling machine according to the present invention is designed to detect 1 g by using a lattice type angle detector.
Even if a soft calculation is performed on the ratio between the signal and the reference 1 direct signal, the middle and high frequency components mixed in due to the vibration of the track straightening machine will be filtered out and the response frequency will be 1 to 5 times the response frequency of the rail lifting device. In other words, since only the frequency components of 1 to 5H2 are sent to the relay control circuit, rail lifting during track adjustment
l, etc. can still be performed accurately. In addition, the cant detection accuracy is almost the same as above, so the trajectory is well-finished.
There is no variation in finishing accuracy, and the work efficiency of the track straightening machine is approximately 1.5 to 2 times that of conventional track straightening methods. Also,
In particular, in the leveling device for a track leveling machine according to the present invention, highly accurate leveling control can be performed using a simple angle detector that directly detects the cant value of the rail based on the inclination of the stanchion. This method has the distinct advantage that the structure is extremely simple and economical compared to the conventional indirect control method which maintains the same leveling accuracy.

It goes without saying that the leveling device of the present invention can be applied not only to a track leveling machine, but also to civil engineering construction machines such as bulldozers and power shovels that have a leveling device Be.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a leveling device for track alignment fitting according to an embodiment of the present invention. Figures 2 (a) to (F) are diagrams showing the valley output waveforms in the mountain examples. Arithmetic amplifier 4...Low pass filter 5...Relay 1fjlJ
Control circuit 1℃Y Relay% Applicant: Shibaura Seisakunobu Co., Ltd.

Claims (1)

[Claims] an angle detector that detects one cant of the rail by one rotation of a pendulum; a reference value setter that sets a target cant value;
An operational amplifier performs a comparison calculation between this reference value and the detection number 1g of the angle detector, and a frequency of 1 to 5 times the response frequency of the rail lifting device, that is, a frequency of 1 to 5 out of the 4 outputs of the performance. The level adjustment system of the orbital control machine is composed of a low-pass filter that extracts only the component, and an output-side tapping circuit that sends a single ringing command to the level adjustment device when the output of this low-pass filter reaches the return value of 11p. positive equipment,