JPS5814883B2 - Track alignment machine working position correction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a working position correction device for a track straightening machine for aligning a working device such as a tamping device attached to the vehicle body of the track straightening machine with the position of a rail.

As shown in Fig. 1, the track straightening machine has a car body 1 supported by two front and rear axles 2 and 3,
t2b and the rear wheels 3a, 3b, the rail 4a,
4b, and at the end of this vehicle body 1,
A working device 5 such as a tamping device is attached.

By the way, when such a track straightening machine is located at the curved part of the rails 4a and 4b, as shown in FIG. Working device 5 and rail 4a attached to the front part
, 4b.

Therefore, when working on such curved sections,
As shown in FIG. 1b, for example, the rear part of the vehicle body 1 (rear axle 3 section) is moved laterally using the center 0 of the front axle 2 as a fulcrum, and the working device 5 at the front part of the vehicle body 1 is moved to the rail 4a. ,4 b
It is necessary to correct the position so that it is in the proper position.

Conventionally, a mechanism using a hydraulic cylinder has been used as a device for such position correction, and an operator drives the hydraulic cylinder mechanism to swing the vehicle body 1 laterally.
The reality is that the rails 4 a and 4 b and the working device 5 are individually aligned by visual inspection.

However, such conventional work position correction devices have several problems including the workability of positioning.

First, since each working device 5 is aligned individually and visually, the work is extremely troublesome and puts a heavy burden on the operator.

Secondly, since the operation is performed visually by the operator, alignment is insufficient, and sometimes the rails 4a, 4
b and the working device 5 may interfere, or the worker may accidentally swing the vehicle body 1 in the opposite direction to the correction direction and damage the working device 5.

The present invention has been made in consideration of the above points, and it is an object of the present invention to provide a working position correction device for a track straightening machine that has good workability and can perform positioning accurately.

First, an overview of the working position correction device for a track straightening machine according to the present invention will be explained with reference to FIG.

As shown in the figure, in the present invention, the above-mentioned vehicle body 1
In addition to the front wheels 2a, 2b and 3a, 3b that support the work device 5, there is a measuring wheel 6at6 that can run on the left and right rails 4a, 4b on the attachment center line 5a (see Fig. 1) of the working device 5.
b, and a potentiometer 8 is placed in the middle of an interwheel shaft 7 that connects these left and right measuring wheels 6at6b.

In this case, wheels having flanges 60a, 60b on the inside are selected as the measuring wheels 6at6b, and even if the vehicle body 1 enters a curved section, the measuring wheels $a, 6b themselves
The flanges 60a, 60b contact the heads of the lenses 4a, 4b to restrict their movement.

Further, the potentiometer 8 is set in the axial direction of the inter-wheel shaft 7, and regarding the movement of the inter-wheel shaft 7 in the axial direction, the main body portion 8a of the potentiometer 8 is set to move together with the vehicle body 1, and The detection shaft 8b of the potentiometer 8 is configured to move together with the inter-wheel shaft 7.

Therefore, the track straightening machine enters the curved section, and the car body 1 (therefore, the working device 5 attached to the car body 1)
When a positional shift occurs with respect to the rails 4at4b, a relative movement occurs between the vehicle body 1 and the interwheel shaft 7, and the potentiometer 8 generates a certain electric signal q in accordance with the amount of mechanical displacement.

In the present invention, the signal q from the potentiometer 8 and the signal qo from the separately provided zero point adjuster 9 are compared by the comparator 10, and if there is the above positional deviation,
The hydraulic system 11 is controlled to correct the deviation, and the vehicle body 1 is caused to swing laterally.

Here, the zero point adjuster 9 adjusts the output of the potentiometer 8 depending on the orbit conditions. For example, if there is slack on the track, the zero point of the zero point adjuster 9 can be shifted by 1/2 of the slack. It is possible to correct the position to the correct position.

Next, with reference to FIGS. 3 to 5, a specific configuration of the attachment portion of the linear displacement potentiometer 8 (what can be called a positional deviation detection mechanism) will be described.

As shown in FIGS. 3 and 4, a frame 13 for attaching a working device 5 such as a kumbing device is fixed by welding to the left and right ends of a mounting base 12 that forms one of the frames of the vehicle body 1. .

This mounting base 12 is parallel to the mounting center line 5a of the aforementioned working device 5, and directly below this mounting base 12 runs an inter-wheel shaft 7 that connects the left and right measuring wheels 6a and 5b.

For convenience of assembly, the inter-wheel shaft 7 itself is a joint shaft 7a.
and a wheel shaft 7b, and a linear displacement potentiometer 8 is disposed above the central portion of the inter-wheel shaft 7.

When installing this potentiometer 8, a potentiometer installation fitting 14 is used.
are fixed using screws 15a or the like.

In this case, firstly, the body portion 8a of the potentiometer 8 must move in the direction of the inter-wheel shaft 7 with the mounting base 12 on the vehicle body 1 side, and secondly, at the same time, it must be attached to the body portion 8a. It must not move vertically with the stand 12.

This is because the first point is to know the relative displacement between the vehicle body 1 and the interwheel shaft 7 using the potentiometer 8 as described above, and the second point is to know the relative displacement between the vehicle body 1 and the interwheel shaft 7. This is because the distance between the mounting base 12 on the side of the vehicle body 1 and the inter-wheel shaft 7 changes as the rails 4a and 4b move up and down, so this can be accommodated.

Therefore, the mounting bracket 14 supporting the main body portion 8a of the potentiometer 8 can freely move up and down without rotating relative to the vehicle body 1 via the guide shaft 16 and guide 17.
Further, it is freely attached to the inter-wheel shaft 7 in the left and right direction.

To explain the relationship between the mounting bracket 14 and the inter-wheel shaft 7 in more detail, the part 14 of the mounting bracket 14
a forms a key boss, and key 1 is placed in this key boss portion 14a.
8 is inserted in the axial direction.

Therefore, the key post portion 14 of this mounting bracket 14
a constitutes a guide in the axial direction of the inter-wheel shaft 7 and also serves to prevent the inter-wheel shaft 7 from rotating.

On the other hand, as shown in FIG. 5, a rod 19 is connected to one end of the detection shaft 8b of the potentiometer 8 to the main body portion 8a as described above, and one end of this rod 19 is connected to the inter-wheel shaft 7 (wheel It is attached to a support member 20 fixed to a shaft 7b) so as to be swingable in the vertical direction.

Therefore, when a relative movement occurs between the mounting base 12 on the vehicle body 1 side and the inter-wheel shaft 7, the rod 19 pushes or pulls the detection shaft 8b of the potentiometer 8, which corresponds to the amount of mechanical displacement. It generates an electrical signal q.

As described above, in the working position correction device for a track straightening machine of the present invention, the working device 5 and the rail 4 attached to the vehicle body 1 side are
Since the amount of deviation from a t 4 b is measured by the potentiometer 8 via the inter-wheel shaft 7, the work is easier and more reliable than when visually checking.
Moreover, the amount of electricity of this potentiometer 8 is adjusted by the zero point adjuster 9.
Since the adjustment is made according to the method, even if there is a slack gauge deviation, the work can be carried out without any problems.

Therefore, this type of workability can be improved, and the working device 5 can always be set at an appropriate position with respect to the rails 4a, 4b, which is an excellent advantage.

[Brief explanation of the drawing]

Fig. 1 is a model diagram showing the necessity of sideways swinging of the car body, Fig. 2 is a schematic configuration diagram showing an overview of the working position correction device of the track straightening machine of the present invention, and Fig. 3 is the main part of the present invention. A front view showing an example of potentiometer installation, Figure 4 is B-B in Figure 3.
FIG. 5 is a cross-sectional view taken along line A-A-A in FIG. 3. 1...Vehicle body, 2...Front axle, 2a, 2
b...Front wheel, 3...Rear axle, 3a, 3
b...Rear wheel, 4a, 4b...Rail,
5... Working device, 6a, 6b... Measuring wheel, γ... Axis between wheels, 8... Linear displacement potentiometer, 8a... ...Body part of the potentiometer, 8b...Detection axis of the potentiometer, 9...Zero point adjuster, 10...Comparison discriminator, 11... ...Hydraulic system, 12...
・Mounting base, 13... Working device mounting frame, 14... Potentiometer mounting bracket, 16... Guide shaft, 17... Guide, 20... ...Supporting member.

Claims (1)

[Scope of Claims] 1. Correction of the working position of a track straightening machine for aligning the working device attached to the vehicle body with the position of the rail by swinging the body of the track straightening machine capable of running on rails. The device comprises: a measuring wheel movably provided on the left and right rails at the attachment part of the working device; an interwheel shaft connecting the left and right measuring wheels; and a measuring wheel disposed at an intermediate portion of the interwheel shaft. , a potentiometer that outputs the amount of relative displacement between the vehicle body and the interwheel shaft as an electric signal, and a zero point adjuster that adjusts the output of the potentiometer according to track conditions, and the potentiometer adjusted by the zero point adjuster. 1. A working position correction device for a track straightening machine, characterized in that the vehicle body of the track straightening machine is swung laterally through a hydraulic device operated by an electric signal from the track straightening machine. 2 The main body portion of the potentiometer is attached to a mounting bracket that has a guide portion in the direction of the inter-wheel shaft that also serves to prevent the inter-wheel shaft from rotating, and a guide portion that is movable up and down without rotation. The track adjustment according to claim 1, wherein one end of the detection shaft extending from the main body of the potentiometer is supported so as to be movable in the vertical direction of a support member attached to the interwheel shaft. Work position correction device for main machine.