JPS6156361B2 - - 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. 1a, the track straightening machine has a vehicle body 1 supported by two front and rear axles 2, 3, front wheels 2a, 2b and rear wheels 3a, 3b.
This allows the vehicle to run on rails 4a and 4b, and a working device 5 such as a tamping device is attached to the front of the vehicle body 1.

By the way, such a track straightening machine is used as Rail 4.
If it is located on the curved part of a and 4b, the same figure 1 a
As shown, the front part of the vehicle body 1 and the rails 4a, 4b
Therefore, a positional shift occurs between the working device 5 attached to the front part of the vehicle body 1 and the rails 4a, 4b.

Therefore, when working on such a curved section, the working device 5 at the front of the vehicle body 1 is moved to the rail 4a,
It is necessary to correct the working position so that the center of the working device 5 is at an appropriate position relative to the rail 4b, for example, so that the center of the working device 5 is located at the center between the rails 4a and 4b.

Conventionally, methods for making such position corrections include moving the working device 5 laterally with respect to the vehicle body 1, or moving the working device 5 as shown in FIG. 1b.
A known method is to fix the device itself to the vehicle body 1 and then swing the vehicle body 1, but each method requires a relatively large-scale device. Therefore, such a method is only applied to large-sized track straightening machines, and small and simple track straightening machines usually do not come with any device for such position correction. I wasn't there. For this reason, with conventional simple track straightening machines, there are significant restrictions on work in curved sections.

The present invention has been made in consideration of the above points, and
In particular, the present invention provides a simple working position correction device suitable for a simple track straightening machine.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings (FIGS. 2 and 3).

In the working position correcting device of the present invention, as shown in FIG. Hydraulic cylinders 6a and 6b are provided, respectively. Each hydraulic cylinder 6a, 6
b is for moving the front wheels 2a, 2b toward the rails 4a, 4b by the reaction force of the acting force on the rails 4a, 4b, and by this movement, the position of the working device 5 attached to the vehicle body is corrected. This is a major feature of the present invention. Although this amount of movement is considerably limited compared to the amount of conventional hip swing mentioned above, the curved part of the rail
A slack of approximately 17 mm is provided, which is sufficient in many cases to correct the position of the working device of a simple track straightening machine.

Next, the mounting structure of the above-mentioned hydraulic cylinder will be explained. The head sides 61a, 61b of the hydraulic cylinders 6a, 6b are swingably supported by a pedestal 8 attached to the vehicle body frame 7 near the working device 5. On the other hand, the piston rods 62a, 62
The tip of b is pin-coupled to a support link 9, and this support link 9 itself is pin-coupled to the other part of the pedestal 8, and the pedestal 8, hydraulic cylinders 6a, 6b, and support link 9 form a triangle. A shaped closing linkage is constructed. Further, a pressure roller 10 is attached to the support link 9 portion, and this pressure roller 10 can roll on the rails 4a, 4b, and pushes the rails 4a, 4b sideways by the acting force of the hydraulic cylinders 6a, 6b. is configured to do so. Therefore, the acting force of the hydraulic cylinders 6a, 6b is applied directly to the rails 4a, 4a, 6b via the pressure roller 10.
It takes 4b.

Now, in the working position correction device of the present invention,
At the curved part of the track, a pair of left and right hydraulic cylinders 6a on both sides of the vehicle body depending on whether it is a left curve or a right curve.
A hydraulic control circuit that can switch the supply of hydraulic oil to 6b is required.

FIG. 3 shows an example of such a hydraulic control circuit, in which a pressure reducing valve 15, a setting/cancelling solenoid valve 12, and a left/right switching solenoid valve 13 are connected to the hydraulic power source 11. The hydraulic cylinders 6a and 6b are provided in series, and the hydraulic cylinders 6a and 6b are provided in parallel. In this hydraulic control circuit, the lateral pushing force of the hydraulic cylinders 6a, 6b is set using the pressure gauge 14 and the pressure reducing valve 15.

The working position correction device of the present invention having such a configuration is activated only when the track straightening machine is running for work, but in that case, the operator must judge at the entrance of the curve whether it is a right or left curve, and then move sideways. The pushing force may be set using the pressure reducing valve 15, and the left/right switching solenoid valve 13 may be set to either the left or the right. As a result, either the left or right hydraulic cylinders 6a, 6b actuate and push the rails 4a, 4b sideways via the pressure roller 10. As a result, the front wheels 2a, 2b move inwardly on the rails 4a, 4b due to the reaction force. By moving to the track side, the working device 5 attached to the front part of the vehicle body can be placed at an appropriate position, for example, the center of the working device 5 can be aligned with the center between the rails 4a and 4b.

As described above, in the working position correction device for a simple track straightening machine of the present invention, hydraulic cylinders are provided on both sides of the vehicle body near the working device of the track straightening machine to apply a lateral pushing force to the rail, and the acting force is Because the front wheels are moved toward the inner rail by the reaction force of is obtained.

Further, in the working position correction device of the present invention,
Since the position of the working equipment can be corrected only by controlling the hydraulic cylinder, the operation itself is extremely simple.In particular, since an electromagnetic type is used as the control valve, right-hand curves on curved sections of the track can be adjusted by simply switching a switch. Alternatively, it has an excellent advantage in that the position of the working device can be corrected in response to a left curve.

[Brief explanation of the drawing]

Figure 1a shows the need for position correction in the track adjustment machine, Figure 1b shows the case where the conventional track adjustment machine swings its tail, and Figure 2 shows the position correction of the present invention. FIG. 3 is a front view of essential parts showing one embodiment of a work position correction device for a simple track straightening machine, and FIG. 3 is a diagram showing an example of a hydraulic control circuit used therein. 1...Vehicle body, 2a, 2b...Front wheels, 4a, 4
b...Rail, 5...Working device, 6a, 6b...
Hydraulic cylinder, 7... Vehicle frame, 8... Frame, 9...
...Support link, 10...Press roller, 11...Hydraulic pressure source, 12...Solenoid valve for setting/cancellation, 13...
Solenoid valve for left/right switching, 15...pressure reducing valve.

Claims (1)

[Claims] 1 A pair of left and right hydraulic cylinders are installed on both sides of the vehicle body near the working device of the track straightening machine, and the hydraulic cylinders are installed at the tips of the piston rods so as to be able to roll on the rail, and the acting force of the hydraulic cylinders is and a hydraulic control circuit that switches the supply of hydraulic oil to the pair of left and right hydraulic cylinders depending on whether the curved portion of the track is a right curve or a left curve. In the curved section of the track, the front wheel of the track straightening machine is moved to the inner track side by the reaction force of the hydraulic cylinder acting force transmitted to the rail via the pressure roller, and the slack on the curved section of the rail is removed. A working position correction device for a simple track straightening machine, characterized in that the working device is adjusted to a proper working position by using the above-described method.