RU222865U1 - KEY FOR INSTALLING AND REMOVAL RELAY UNITS - Google Patents

Abstract

The utility model relates to hand tools for carrying out installation work, signaling, centralization and blocking devices, railways, in particular to a special tool for installing relay units on cabinets, when secured with a screw with a special head. The objective of the proposed technical solution is to improve the quality of service for signaling devices. In the process of solving the problem, a technical result is achieved, which consists in reducing the installation and dismantling time of relay units and increasing the security of these objects from vandalism. The technical result is achieved with a key for installing and removing relay units, specially made of a rod, with two heads at the ends, in one head there is a central internal blind hole and a central slotted slot, in the second head there is a transverse through hole for installing a knob. The depth of the blind hole is 20 mm, the diameter is 11 mm, the central slot has dimensions: depth 11 mm, height 5 mm, diameter of the hole for the driver is 8 mm. The outer diameter of the heads is 16 mm, the height of the head with a blind hole is 25 mm, the height of the head with a through hole is 20 mm, the total length of the key is 225 mm. The key is hardened to HRC40-46, made of 40X alloy steel, and has an anti-corrosion coating.

Description

The utility model relates to hand tools for carrying out installation work, signaling, centralization and blocking devices, railways, in particular to a special tool for installing relay units on cabinets, when secured with a screw with a special head.

Relay blocks are designed to accommodate relays, transformers, capacitors and other products included in the block electrical centralization system. Each block implements certain functional dependencies in the electrical circuit of a given system. Therefore, the blocks must have anti-vandal and reliable protection against opening the blocks.

Known are socket wrenches with double-sided internal hexagon (GOST 25789-83 (ST SEV 3728-82 pos. 7812-1494, 7812-1495).

The disadvantage of these keys is that not one of them, or the same pair, cannot perform the operation in cramped conditions and limited access when servicing relay units. The blocks have a large height and are installed tightly to each other.

Socket heads with an internal hexagon are known (GOST R 57977-2017 Replacement heads. Types and main dimensions).

The disadvantage of these keys is that not one of them can perform the operation of unscrewing and screwing in screws with a special head used for fastening relay units.

The objective of the proposed technical solution is to improve the quality of service for signaling devices.

In the process of solving the problem, a technical result is achieved, which consists in reducing the time of installation and dismantling of relay units.

The technical result is achieved with a key for installing and removing relay blocks, with two heads at the ends, in one head there is a central internal blind hole with a depth of 20 mm, a diameter of 11 mm and a central splined slot with a depth of 11 mm and a height of 5 mm, in the second head there is a transverse through hole for installing a driver with a diameter of 8 mm.

The outer diameter of the heads is 16 mm, the height of the head with a blind hole is 25 mm, the height of the head with a through hole is 20 mm, the total length of the key is 225 mm.

The key is made of rod, hardened to a hardness of HRC40-46, made of 40X alloy steel, and has an anti-corrosion coating.

The proposed technical solution for the key for installing and removing relay blocks is intended for unscrewing and screwing in screws with a special head used for fastening relay blocks. The internal blind hole and the central spline slot of the head (working) of the key form a spline connection with the screw head when unscrewing and screwing in the screw. This connection of the key and the screw allows you to easily change the orientation of the screw in space using the key. This makes it easy to find the hole in the locking sleeve, which is the second part of the relay unit fastening device, after which the screw is tightened using a wrench. This is especially important since the mounting device is located under the bottom of the relay unit, where access is difficult.

The presence of a transverse hole in the second head for installing a knob allows, by changing the reach of the knob, to increase the force of screwing or unscrewing the screw. The long length of the key simplifies the operation of the key, since the key knob extends beyond the dimensions and it is easy to complete a full turn of the key.

Thus, the claimed technical result is achieved in reducing the time for maintenance and repair of signaling and interlocking system (signaling) products on the railway and increasing the security of these objects from vandalism. The structure of the key is illustrated by drawings.

In fig. 1 shows a general view of the key, Fig. 2 fragment of a key with a section of the working head, Fig. 3 fragment of a key with a knob inserted into the head.

The key for installing and removing relay units is made of rod 1, with two heads at ends 2 and 3. In the working head 2 there is a central internal blind hole 2.1 and a central splined slot 2.2, in the second head 3 there is a transverse hole 3.1 for installing a knob 4.

The depth of the blind hole 2.1 is 20 mm, the diameter is 11 mm, the central spline slot 2.2 has dimensions of a depth of 11 mm, a height of 5 mm, the diameter of the hole 3.1 for the driver is 8 mm.

The outer diameter of heads 2 and 3 is 16 mm, the height of head 2 is 25 mm, the height of head 3 is 20 mm, the total length of the key is 225 mm.

The key is hardened to HRC40-46, made of 40X alloy steel, and has an anti-corrosion coating.

When installing and dismantling relay blocks, use a key in the following way.

Before installing the relay unit, the upper stops (trunnions) of the unit are aligned with the guide cutouts of the upper brackets, the device is placed with the lower trunnions on the lower bracket and pressed against the sockets so that its guide pins fit into the corresponding holes of the cabinet frame. The locking sleeve is raised, its hole is aligned with the locking screw, after which the screw is tightened using a wrench.

Before removing the relay block, unscrew the locking screw at the bottom of the block using a wrench. The relay unit is lifted and removed.

The presence of a key for installing and removing relay units allows you to quickly install and dismantle relay units, saving time on finding and delivering the necessary keys and accessories.

Claims (3)

1. A key for installing and removing relay units with two heads at the ends, in one head there is a central internal blind hole with a depth of 20 mm, a diameter of 11 mm and a central splined slot with a depth of 11 mm and a height of 5 mm, in the second head there is a transverse through hole for installation of a wrench with a diameter of 8 mm. 2. The key according to claim 1, characterized in that the outer diameter of the heads is 16 mm, the height of the head with a blind hole is 25 mm, the height of the head with a through hole is 20 mm, the total length of the key is 225 mm. 3. The key according to claim 1, characterized in that it is made of a rod, hardened to a hardness of HRC40-46, made of alloy steel 40X, and has an anti-corrosion coating.