RU225572U1 - Signal switch with inertial signal switching compensators - Google Patents

Abstract

The utility model relates to pipeline fittings, more specifically, to indicators for the end positions of a shut-off valve and can be used in shipbuilding and shipbuilding, as well as other industries in the design of pipeline fittings to signal the position of moving elements of fittings and mechanisms. The objective of the proposed technical solution is to create a small-sized signaling device capable of withstanding impacts from sudden movement of the controlled mechanism without destruction. The technical result that provides a solution to the problem is to increase the reliability of the signaling device while simultaneously reducing the overall characteristics. The declared technical result is achieved in the technical solution of a signaling device with inertial signal switching compensators, including a housing in which mechanical and electrical indicators of the end positions of the controlled mechanism are located, a signal switching lever, one end of which is located in the housing, switching devices that issue an electrical signal to the indicator and consisting of two pairs of microswitches installed at the ends of the housing, inertial compensators made of couplings and cups that fit into each other with a spring installed between them, a mechanical pointer located outside the housing, adjusting screws, cable entry. In this case, the signal switching lever with one end is installed inside the housing between the adjusting screws and is fixed on the axis with the ability to move along it, and the other end interacts with the controlled mechanism without fixing it. The mechanical pointer arrow is located on the same axis with the signal switch lever. The adjusting screws are installed in the couplings along the thread with their heads facing each other with the possibility of interaction with the upper part of the signal switching lever. The design of the claimed technical solution will extend the service life of the signaling device with inertial signal switching compensators and ensure the reliability of its operation, and reducing the overall characteristics of this device will ensure more convenient and faster installation. 2 ill.

Description

The utility model relates to pipeline fittings, more specifically, to indicators for the end positions of a shut-off valve and can be used in shipbuilding and shipbuilding, as well as other industries in the design of pipeline fittings to signal the position of moving elements of fittings and mechanisms.

The “Limit position indicator for a pipeline shut-off valve” is known according to patent No. 179624, which includes reed switches with a magnetically transparent shell, a thermal vibration compensator made in the form of an s-shaped loop at the reed switch terminals, as well as a compensator for shocks, thermal deformations and changes in external pressure, made in the form of a porous elastic polymer gaskets placed in the body of the shut-off body, and permanent control magnets fixed in a groove made in the body of the rotary shaft of the shut-off body. The technical solution is based on the interaction of reed switches with control magnets. The disadvantage of the above analogue is the need to integrate the device components directly into the parts of the controlled device, significantly introducing themselves into its design, providing places for attaching reed switches with a protective housing and a magnet, which can lead to a decrease in the strength characteristics of the parts of the controlled device or an increase in their overall dimensions.

The “Rotary contact unit for signaling the position of the main blades of the disconnector and grounding switch” is known according to patent No. 178773, installed on a block of auxiliary switches of the rotary contacts of the disconnector and grounding switch, while on the shaft of the auxiliary switch of the rotary contact of the disconnector and grounding switch, a double-armed lever is installed, at one end of which a a rod with a slot along which the lever moves; a shutdown spring is attached to the other end. The technical solution is based on a mechanical method of closing and opening contacts by moving levers and rods. The disadvantage of this device is the absence of a compensation mechanism or shock protection during operation of the controlled mechanism, which can lead to the device failing due to mechanical damage.

The known “Alarm unit with inertial signal position compensators” according to patent No. 198519, adopted as a prototype. The signaling device contains a housing in which mechanical and electrical indicators of the end positions of the shut-off element are located, microswitches that issue an electrical signal to the indicator, as well as a pusher plate, one end of which is connected to the rod of the shut-off element, and the second is located in the housing. The disadvantage of this device is the need to rigidly fasten the pusher plate to the shut-off element, requiring additional holes on the shut-off element or its rod, which leads to a decrease in the strength characteristics of the rod of the controlled mechanism.

The objective of the proposed technical solution is to create a small-sized signaling device capable of withstanding impacts from sudden movement of the controlled mechanism without destruction.

The technical result that provides a solution to the problem is to increase the reliability of the signaling device while simultaneously reducing the overall characteristics.

The declared technical result is achieved in the technical solution of a signaling device with inertial signal switching compensators, including a housing in which mechanical and electrical indicators of the end positions of the controlled mechanism are located, a signal switching lever, one end of which is located in the housing, switching devices that issue an electrical signal to the indicator and consisting of two pairs of microswitches installed at the ends of the housing, inertial compensators made of couplings and cups that fit into each other with a spring installed between them, a mechanical pointer located outside the housing, adjusting screws, cable entry. In this case, the signal switching lever with one end is installed inside the housing between the adjusting screws and fixed on the axis with the ability to move along the axis of the housing, and the other end interacts with the controlled mechanism without fixing it. The mechanical pointer arrow is located on the same axis with the signal switch lever. The adjusting screws are installed in the couplings along the thread with their heads facing each other with the possibility of interaction with the upper part of the signal switching lever.

The essence of the proposed technical solution is illustrated by drawings - Fig. 1, fig. 2.

In fig. Figure 1 shows a projection of a general view of a signaling device with inertial signal switching compensators with a conventional section.

In fig. Figure 2 shows a projection of a signaling device with inertial signal switching compensators from the side of a mechanical arrow indicating the position of the controlled mechanism.

The signaling device with inertial signal switching compensators includes:

building 1;

signal switching lever 2, which at one end is installed inside the housing 1 between the adjusting screws 3 and is fixed on the axis 4 with the possibility of rotation along it, which forms a smooth pressing of the microswitches 5, thereby increasing their service life and ensuring the compactness and reliability of the design as a whole. In this case, the other end of the signal switching lever 2 is not fixed on the controlled mechanism;

two blocks of inertial signal switching compensators 6, located at the ends of the housing 1 mirror to each other, each of which consists of:

a) couplings 7, cups 8, which fit into each other with a spring 9 installed between them, stop 10, into which cup 8 fits;

b) two microswitches 5, which output an electrical signal to the indicator when the signal switch lever 2 is moved;

c) an adjusting screw 3 installed in the coupling 7 along the thread and with the head directed towards the signal shift lever 2, thereby ensuring interaction with it when it moves and the ability to adjust the pressing stroke;

cable entry 11, located at one of the ends of the housing 1, which serves to transmit an electrical signal about the position of the controlled mechanism to a remote post;

a mechanical pointer 12 located outside the housing 1, mounted on an axis 4 with the possibility of rotation on it and serving to mechanically indicate the position of the controlled mechanism.

A signaling device with inertial signal switching compensators operates as follows.

When the rod of the controlled mechanism (valve or any other controlled device that creates translational movement) moves, it touches the signal switch lever 2, as a result of which the signal switch lever 2 rotates on axis 4, located directly inside housing 1, and moves along the axis of housing 1 , through the adjusting screw 3, presses on the block of inertial signal switching compensators 6 from one of the ends of the housing 1, depending on the position of the controlled mechanism and microswitches 5, due to the rotation of the axis 4, the mechanical pointer arrow 12, fixed directly on the axis 4 outside the housing, also moves 1. The pressing stroke is adjusted through adjusting screws 3, threaded into couplings 7 of each block of inertial signal switching compensators 6.

The presence of two position indicators of the controlled mechanism is necessary to visualize the position of the moving body (valve) of the controlled mechanism, both directly on the device itself (mechanical pointer arrow 12, and to transmit the electrical signal from pressing the microswitches 5 through the cable input 11 to a remote post).

The design of the claimed technical solution will extend the service life of the signaling device with inertial signal switching compensators and ensure the reliability of its operation, and reducing the overall characteristics of this device will ensure more convenient and faster installation.

Claims (1)

A signaling device with inertial signal switching compensators, including a housing in which mechanical and electrical indicators of the end positions of the controlled mechanism are located, a signal switching lever, one end of which is located in the housing, switching devices that issue an electrical signal to the indicator and consisting of two pairs of microswitches installed in the ends of the housing, inertial compensators made of couplings and cups that fit into each other with a spring installed between them, a mechanical pointer located outside the housing, adjusting screws, a cable entry, characterized in that the signal switching lever is installed inside the housing between the adjusting screws , fixed on an axis with the possibility of rotation along it without fixing on the controlled mechanism; a mechanical pointer arrow is placed on the same axis with the signal switching lever; the adjusting screws are installed in the couplings along the thread with their heads facing each other with the possibility of interaction with the signal switching lever.