SU753965A1 - Rail-engaging device for continuous raising of track - Google Patents

Description

one

The invention relates to the construction and repair of a railway track and can be used as an attachment to track-and-place machines. There is no intermittent operation.

A rail-grabbing device for continuously lifting a railway track is known, comprising a frame, guides mounted in the lower and upper parts of the frame, placed in the guides of an endless belt carrying rail clamps, including shoulder-shoulder, and support rollers mounted on the frame one.

However, such a device does not reliably hold the rail and sleep grid during the passage of the butt plates. This is due to the fact that the grippers, when passing the butt plates, do not fit under the rail head and, as a result, do not hold them up. As a result, the normal operation of the device to hold the rail and sleepers in a raised state during the passage of the butt plates, leading to a fall of the rail threads, is disrupted. Cro. Moreover, the lower branch of the roller chain due to

eccentrically mounted relative to its longitudinal axis of the folding grippers is in the operating mode of the floor device by the action of transverse forces. bending of the chain and, as a result, the seizure of the flanges of its chain. rollers on the ends of the guides. All this disrupts the normal operation of the device and leads to intensive wear of the working bearing edges of the grippers, and during the passage of the butt plates - to breakdowns.

10 The aim of the invention is to improve the reliability of the device in operation.

To achieve this goal, the frame is made of at least two sections pivotally interconnected. In addition, the endless belt is a track line, in the track of which cuts are made for protrusions - shoulders, and the guides fixed in the lower part of the frame are made in the form of rollers.

FIG. 1 schematically depicts a reel20 pick-up device for continuous lifting of a railway track; in fig. 2 - section A-A of FIG. one; in fig. 3 - section bb FIG. one; in fig. 4 is a view of FIG. 2; in fig. 5 - device with the passage of the butt joints; in fig. 6 - the same, with the multisection articulation of the frame and the hinged connection of the sections among themselves. The rail-gripping device contains a frame, divided into two sections 1 and 2 equal in length, interconnected by a hinge 3 fixed in an eyelet 4. The internal parts of sections are equipped with turning stops 5 and 6. Roller guides 7 and 8 are mounted in the lower parts of the sections, and flat guides 9 and 10 are mounted at the top. The ends of the roller guides have a curvilinear outline. An endless caterpillar ribbon is placed in the guides. The tracks 12 of which are interconnected by fingers 13. On the tracks in a staggered manner with the help of axes 14, folding rail clamps 15 of one-sided action, having a shoulder-shoulder 16, are articulated notches for protrusions 16. The grippers are set eccentrically with respect to the longitudinal axis of the track, so that when they raise the rail thread, they self-lock. In sections 1 and 2 of the frame, mechanical master forms 17 of curvilinear shape are placed, as well as supports 18 with tension drums 19, which are traversed by a track. The tension of the track is carried out through the drums by adjusting screws 20. The ends of the roller guides in the area of approach to the mechanical copiers have a curvilinear shape. At the end portions of the x-sections, supporting two-edge rollers 21 are mounted, which interact with the rail and are adjusted by screws 22. The device is suspended to the track machine using eyelet 4. The track is lifted onto the ballast by a rail-gripping device as follows. A device mounted on a traveling machine is positioned above the rail thread and the folding clamps are brought to the working position by means of a thrust lifting mechanism (not shown in the figures) and engage the rail. The screws 22 establish the position of the rollers 21 depending on the type of rails of the raised rail grating. Then, using the device, the rail yarn is lifted to the required height and then moved by the machine along the railway line, during which the frame sections together with the flat and roller guides are moved relative to the track belt. When this happens, the rail yarn is continuously lifted due to the folding rail claws that go under the rail head during the movement of the track under its own weight when they turn on the axes 14. The claws 15 on the straight sections of the roller guides 7 and 8 perceive the load from the lifted rail yarn and are in a stationary state, and in the zone of curvilinear ends are lowered and released from it. This achieves the withdrawal of the grippers from under the rail head and the insertion of them under the head. Under the influence of copiers 17 interacting with shoulder protrusions 16, the grippers open, shoulder projections sink into the figured tracks of tracks 12 and in this position move relative to the tension drums 19 and then along the flat guides 9 and 10. The distance between the outer grips of each the frame sections that are simultaneously in contact with the rail head are longer than the length of the butt strip. In the process of lifting, the rollers 21 are constantly pressed against the head of the rail thread by the force resulting from the forceful interaction of the lifted rail thread with the clamps 15 and the hinge 3. This ensures that the rail thread is reliably held in a raised state both on the track section without joints, and with the passage of overlays. During the passage of the butt plates, some grippers hold the rail in a hanging state, while others open and act on the pad only with their mass. When one of the sections of the butt-lining frame passes through, its roller 21 is pressed against the rail head at first due to the interaction of the claws in front of the liner with the rail-thread, which ensures reliable subsequent entry of the front claws under the rail head after they pass the lining and permanently holding the thread in a ventilated state. Stable keeping of the rail yarn in a raised state during continuous lifting is ensured not only by two-section, but also by multi-section articulation of the frame and the joint joint between the sections. As shown in fig. 2 and 4, adjacent tracks of the track 11 are affected by forces FI and Pr, which are a response from the lifting force of the rail thread P (and P and the eccentric arrangement of the axes 14 of the arms 15. The length of the fingers 13 is equal to the width of the tracks 12, which provides the track 11 with a significant shear stiffness and eliminates its distortions from the effects of FI and PZ, which contributes to the creation of conditions for its trouble-free operation.

Claims (3)

1. A rail-grab device for the continuous lifting of a railway track, comprising a frame, guides mounted in the lower and upper parts of the frame, placed in the guides of an endless belt carrying rail clamps, including a shoulder-shoulder, and supporting rollers mounted on the frame, characterized in that, in order to increase reliability, the frame is made of at least two sections hinged together. 2. A device according to claim I, characterized in that the endless belt is a track line, in the tracks of which cuts are made for shoulder projections. 3. Device on PG1. 1 and 2, characterized in that the guides fixed in the lower part of the frame are made in the form of rollers. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 545716, cl. E 01 B 27/17, 07,04.75 (prototype). Vs 20 / J W (Par.2 Ch;