CS267030B1 - Tool for disconnecting two-piece inserts fixing the block rail in the trough - Google Patents

Abstract

The tool consists of a fork, the ends of the arms of which are parallel to its shaft. In the area of the fork, a manipulation lever is pivotally connected (to the shorter arm of which a pressure plate is pivotally connected, simultaneously pivotally connected to an auxiliary lever, parallel to the manipulation lever. The shaft and the longer arm of the manipulation lever are provided with handles. Both arms are externally provided with a footrest attached to the same.

Description

The invention relates to a tool for detaching two-part plastic inserts fastening a block rail in a plastic trough of a large-area panel of a tramway or support line.

To fasten the block rail in the trapezoidal gutter of a large-area panel, a rubber cord is most often used, pushed continuously between the inner walls of the gutter and the sides of the block rail by a special device. More recently, the technology of discontinuous fastening of a block rail by means of a two-part plastic insert has been developed, consisting of a pair of 4 to 15 cm long, mutually pressed spacer wedges, the contact surfaces of which are provided with interlocking teeth. Removal of the insert is only possible by sliding the two wedges horizontally relative to each other, using quite considerable opposing horizontal forces. The mutual cohesion of the spacer wedges is so great that ordinary hand tools are not sufficient for their disconnection and removal from the joint in the gutter.

The above-mentioned drawbacks are eliminated by the tool for disconnecting the two-part inserts for fixing the block rail in the trough, according to the invention, the essence of which consists in that it consists of a fork, the ends of the arms of which are parallel to its stem. In the area of the fork fork, outside the longitudinal axis of the shaft, pivotable in a direction parallel to the plane of the arms, a handling lever is connected. A pressure plate is pivotally connected to the shorter arm of the manipulating lever, at the same time pivotally connected to the auxiliary lever, parallel to the manipulating lever and also pivotally connected in the fork area. The shaft and the longer arm of the handling lever are provided with handles and both fork arms are provided on the outside with a vertically mounted ratchet.

The advantage of the tool according to the invention is that it safely disengages each two-part plastic insert. The shape of the fork ensures that eccentric forces do not cause the tool to jam in the gap. Work with the tool continues very quickly, especially when compared to removing the rubber sealing cord, which is so difficult and risky that it also injures workers or bystanders. The tool is designed so that it can be used by people with a more active right or even left hand. Human power can be replaced by the power exerted by a linear hydraulic motor.

In a non-schematic illustration, Fig. 1 shows a side view, Fig. 2 a front view and Fig. 3 a detail of the lower part of the tool when working in a chute of a block rail.

Example

The tool for detaching the two-part plastic inserts fixing the block rail in the trough consists of a fork 1, the ends of the arms 2 of which are parallel to its shank J. In the fork region 1, handling lever £ connected. A pressure plate 2 is pivotally connected to the shorter arm of the handling lever 6, simultaneously pivotally connected to the auxiliary lever 6, parallel to the handling lever 4 and also pivotally connected in the fork area 1. The shaft J and the longer arm of the handling lever 4 are provided with handles i · Both arms of the fork 1 are provided on the outside with a vertically mounted footrest 8.

When using the tool, the two-part plastic insert is first made accessible by partial scraping of adjacent compacted dirt, consisting mainly of dust and small aggregates, which is an anti-slip part of winter grit. Then, both arms 2 of the fork 2 are pushed into the gap between the wall of the plastic trough and the block rail by means of the feet 8 so that the feet 8 point to the opposite side than the block rail is placed. The functionally active footrest can be kept immersed in the gutter by keeping it depressed.

Claims (1)

A tool for detaching two-part inserts for fixing a block rail in a trough, characterized in that it consists of a fork (1), the ends of the arms (2) of which are parallel to its shaft (3), out of the longitudinal axis shaft (J), pivoting in a direction parallel to the plane of the arms (2), a handling lever (4) is connected, to the shorter arm of which a pressure plate (5) is pivotally connected, simultaneously pivotally connected to the auxiliary lever (6), parallel to the handling lever (4) and also pivotally connected in the fork region (1), wherein both the shaft (3) and the longer arm of the handling lever 14) are supported by handles (7) and both arms (2) of the fork (1) are provided on the outside with a vertically fixed tread (8).