JPS6338245Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a track straightening machine that adjusts the height, level, and track of a track while running on a rail, and particularly relates to the rail elevation and lateral pushing device thereof.

To adjust the height, level, and track of the rail using a track straightening machine, stop the track straightening machine at the position where the track is to be straightened, and press the rail catch of the rail lifting device installed on this track straightening machine. It is necessary to grab the rail and raise it a certain amount above the track bed. Conventionally, as a rail lifting device for grasping and lifting such a rail, a catch box is installed on the underframe of the track straightening machine so that it can be raised and lowered freely via a lifting cylinder, and the left and right catch boxes are attached to the catch box. A rail catch for grasping the rail is attached, and an opening/closing cylinder is provided for opening and closing the rail catch to grasp the rail or for storing the rail catch.

In addition, the entire catch box equipped with these rail catches and opening/closing cylinders is moved in the direction perpendicular to the longitudinal direction of the rail, that is, in the left-right direction, by a horizontal push cylinder installed in the underframe of the track straightening machine. It was configured so that it was possible to push sideways the rail grabbed by the rail catch.

However, such a conventional rail lifting device using a catch box has a complicated structure because the rail catch and its opening/closing cylinder are attached to the underframe of the track straightening machine via the catch box, and the entire device is The disadvantage was that it became larger.
In particular, since all the reaction force on the rail side when the rail is lifted is concentrated on the catch box, in conventional equipment, this catch box and its supporting members must be made extremely strong, which inevitably increases the The overall configuration of the device was increased in size. Furthermore, the opening/closing cylinder for the rail catch attached to the catch box also had the disadvantage of having to be large in size in order to absorb the weight of the rail.

Furthermore, the conventional device cannot lift the rail without using three cylinders: an opening/closing cylinder that engages the rail catch with the rail, a lifting cylinder that lifts the rail, and a cylinder that pushes the rail sideways. It was not possible to perform sideways pushing, and the structure was complicated in that respect as well.

The present invention solves the above-mentioned problems of the conventional technology, attaches a rail gripping device composed of links directly to the underframe, and uses this rail gripping device to perform rail hoisting and lateral pushing operations. It is an object of the present invention to provide a rail-top lateral pushing device having a simple structure that does not require a catch box or a cylinder exclusively for lateral pushing.

Hereinafter, the present invention will be explained in detail with reference to illustrated embodiments.

Fig. 1 is a front view of a rail uphill lateral pushing device which is an embodiment of the present invention, and Fig. 2 is a side view of a track straightening machine equipped with the rail uphill lateral pushing device of the present invention.
FIG. 3 is a plan view of FIG. 2. Figures 1 to 3
In the figures, the same numbers indicate the same members.

In Figures 2 and 3, the reference numeral 1 in the figure is the underframe of the track straightening machine, 2 is the front wheel for running provided in the longitudinal direction of the rail of this underframe 1, and 2' is the rear. It's a wheel. Reference numeral 3 denotes a cylinder device for lifting the underframe, which is provided at the front part of the underframe 1, and 3' at the rear thereof. Wheels 4, 4' are attached. A tamping device A is provided approximately in the center of this underframe 1.
The rail uphill lateral pushing device 5 of this embodiment is disposed near the rail.

As shown in the front view of FIG. 1, this rail-up lateral pushing device 5 consists of a pair of left and right lifting devices installed symmetrically with respect to the center of the track straightening machine, that is, the center of the left and right rails R. It consists of Therefore, the configuration of the lifting device on one side will be explained below.

That is, the reference numeral 20 in the figure is the attachment part of the rail up and down lateral pushing device 5 on the underframe 1 of the track straightening machine, and a link stand 22 is attached to the lower center of the underframe 20 via a pin 21 to move it up and down. It is attached so that it can rotate freely in the direction. The tip of the link stand 22 extends outward from the center of the left and right rails R and extends above the rail R, and a catch mount 23 is rotatably attached to the tip of the link stand 22. At the tip of the catch mounting base 23, for example, a roller-shaped rail catch 24 is attached to the rail R.
It is provided so as to be engaged from the inside. A storage cylinder 25 is installed on the tip side of the catch mounting base 23.
The distal end of the operating rod 27 is connected, and the base end of the storage cylinder 25 is attached to the underframe 20 located above the link stand 22 by pin connection. On the other hand, the tip of the operating rod 28 of the lift cylinder 26 is connected to the tip of the link stand 22,
The base end of the hoisting cylinder 26 is connected to the underframe 20 by a pin connection, similar to the base end of the storage cylinder 25.

The rail lifting device of the present embodiment is constructed as a set of left and right rail lifting devices having the above-mentioned configuration, and the operation thereof will be explained next.

First, when the rail catch is stored,
The operating rod 27 of the storage cylinder 25 is retracted, and the catch mounting base 23 connected thereto is rotated upward about the support shaft 29 at the tip of the link base 22.
When this is done, the rail R and the rail catch 24 are separated from each other as shown in FIG. 1A, and the rail catch is in the stored state. In this case, the rail catch placed above the rail on the opposite side is also accommodated in the same manner.

Next, in order to perform the work of lifting or pushing the rail sideways, extend the operating rod 27 of the storage cylinder 25 in the opposite direction to the storage position, and move the catch mounting base 23 to the link base 2.
Rotate it downward about the support shaft 29 at the tip of 2. Then, as shown in Figure 1B, the catch mounting base 2
The rail catch 24 provided at the tip of the rail R
The rail R is engaged with the shoulder part of the head of the rail R. Therefore, the lifting cylinder 26
When the link base 22 is rotated upward around the pin 21, the catch mounting base 23 and the rail catch 24 attached to the link base 22 also move upward while clamping the rail R, so that the rail Uphill work is carried out. In this case, if the storage cylinder 25 is set to the length when the rail is caught, the catch mounting base 23 will rotate outward as the link base 22 rotates upward, so the rail R will move diagonally upward. It is said like this. Therefore, in order to raise the rail R directly above, it is sufficient to shorten the operating rod 27 of the storage cylinder 25 by an amount that compensates for the outward rotation of the catch mounting base 23.

Furthermore, in order to push the raised rail sideways, the storage cylinder 25 is operated in the direction of extending the operating rod 27, and thereby the link base 2
The catch mounting base 23 is rotated about the support shaft 29 at the tip of the rail R, and the rail R engaged with the rail catch 24 is pushed in a direction perpendicular to its longitudinal direction, that is, horizontally. In this case, just like when traveling by rail,
Since the tip of the link draws an arc-shaped locus centered on the support shaft 29, if it is necessary to push horizontally, the operating rod 28 of the lifting cylinder should be adjusted to compensate for the amount of rise of the link. Try to stretch it. In addition, in the case of this lateral pushing operation, the device of the present invention has the left and right rail lifting devices each engaging the rail R from the inside, so the device on the side pushing the rail R sideways can perform the above-mentioned operation. When the lifting device on the opposite side is attached, conversely shorten the storage cylinder 25 and the operating rod 7, and move the horizontally pushed rail and the opposite rail connected by sleepers to the inside of the track straightening machine. Allows you to move towards the destination.

As described above, in the present invention, the storage cylinder 25 and the lifting cylinder 2 are attached to the underframe.
6 to perform the climbing and lateral pushing of the rail, there is no need to provide a dedicated lateral pushing cylinder, which has the advantage of simplifying the structure of the device. Further, by employing the link mechanism, a member corresponding to a conventional catch box is not required, so the entire device becomes smaller and the number of parts is reduced. In particular, if the links are constructed as in the illustrated embodiment, the link base 22 receives only a tensile load, the storage cylinder receives only a compressive load, and the lifting cylinder receives only a tensile load, so that the static balance is maintained. The fulcrum of the rail load that is maintained and is applied to the tip of the rail catch, and the fulcrum of the link stand 22,
Also, since the link base 22 and the mounting fulcrum of the cylinder always form a triangle, there is an effect that no bending stress is generated in the entire link mechanism.

[Brief explanation of the drawing]

FIG. 1 is a front view of a rail overhead lateral pushing device which is an embodiment of the present invention, in which A shows the right half of the device when the rail catch is retracted, and B shows the left half of the rail catch when the rail catch is in place. FIG. 2 is a side view of a track straightening machine equipped with the rail lateral pushing device of the present invention, and FIG. 3 is a plan view of FIG. 2. 1... Underframe of track straightening machine, 2... Front wheel, 2'
... Rear wheel, 3,3' ... Cylinder for lifting the underframe,
4, 4'...Wheel, 5...Rail top horizontal push device, A...Tamping device, R...Rail, 20
...Underframe, 21...Pin, 22...Link stand, 2
3... Catch mounting base, 24... Rail catch, 25... Storage cylinder, 26... Climb cylinder, 27, 28... Operating rod, 29... Support shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of left and right link stands are attached to the bottom of the underframe so that they can rotate freely in a direction perpendicular to the length direction of the rail, and the upper end is rotatable at the tip of each link stand. The left and right catch mounts have rail catches that engage the rails from the inside at their lower ends, and one end is connected to the tip of each of the link mounts, and the other end is connected to the top of the underframe. A pair of left and right lifting cylinders; A pair of left and right storage cylinders, one end of which is connected between the rail catch attachment part of the catch mounting base and the rod attachment part of the lift cylinder, and the other end of which is connected to the upper part of the underframe. A rail-top horizontal pushing device characterized by comprising: .