CN105655186A - Watertight mechanical type stroke switch - Google Patents

Abstract

The invention relates to the technical field of underwater launching of a vehicle, in particular to a watertight mechanical travel switch, and aims to solve the problems of low reliability and poor anti-interference ability of the existing travel switch in the underwater test of the vehicle. It is characterized in that it includes a switch assembly, a switch sensor, a cable and a ground control system; the switch assembly is fixedly connected to the input end of the switch sensor, the output end of the switch sensor is connected to one end of the cable, and the other end of the cable is connected to the ground control system. system input connections. The invention can meet the test requirement of 50 meters underwater by providing a sealing ring in the switch assembly and a glass seal in the switch sensor, and has the characteristics of low cost and high reliability. After several underwater tests of the vehicle body, the switch works normally, which can ensure the smooth completion of the test.

Description

Watertight Mechanical Limit Switch

technical field

The invention relates to the technical field of underwater launch of a vehicle, in particular to a watertight mechanical travel switch.

Background technique

During the underwater test of the vehicle body, use the boat speed simulator installed on the underwater launch platform to drive the launch device to simulate the boat speed. During the test, the boat speed simulator moves along the track, and touches the track installed on the edge of the track after reaching the designated launch position of the launch window. The watertight limit switch, the limit switch sends a signal to the ground control system that the car is in place, and the ground control system uses this as the test ignition time to give the power device ignition signal, the vehicle is released, and the launch window protection mechanism is closed to ensure that the vehicle falls into the water. into the recycling platform. The time when the trolley in place signal is sent out is determined in conjunction with the debugging of the boat speed simulation system before the test. The reliability of the position limit switch sensor used on the underwater launch platform is of great significance to the safe launch.

At present, there are many types of travel switches used in industrial stroke control systems, such as button type, pulley type, and push rod type. switch. The mechanical limit switch has the advantages of high reliability and strong anti-interference ability. However, the watertight mechanical limit switch currently on the market has the highest waterproof rating of IP67, which can only meet the requirements for use in a water depth of 1 meter, and cannot meet the needs of underwater testing of the vehicle.

Contents of the invention

The purpose of the present invention is to solve the problem of low reliability and poor anti-interference ability of the existing travel switch in the underwater test of the vehicle body, and provide a reliability and anti-interference ability to meet the requirements of the underwater test of the vehicle body, and the waterproof level High watertight mechanical limit switch.

The present invention is achieved like this:

A watertight mechanical travel switch, including a switch assembly, a switch sensor, a cable and a ground control system; the switch assembly is fixedly connected to the input end of the switch sensor, the output end of the switch sensor is connected to one end of the cable, and the other end of the cable Connect to the input of the ground control system.

The above-mentioned switch assembly includes a swing rod, a rotating shaft, a rotating cylinder and a sealing ring; the swing rod is in the shape of a rectangular plate as a whole, and is fixedly connected to the upper end surface of the rotating shaft; the rotating shaft is in the shape of a screw as a whole; The upper end surface of the rotating shaft is fixedly connected with the swing rod; the middle part of the rotating shaft is cylindrical, and the outer surface is provided with a sealing ring along the length direction; the lower part of the rotating shaft is an "L" shaped plate; The size of the groove matches the size of the middle and lower parts of the rotating shaft. The middle and lower parts of the rotating shaft extend into the groove, and the inner wall of the groove is closely matched with the sealing ring; Boss, the central part of the boss has a through hole along the horizontal direction, the through hole is connected with the groove of the main part; the right end surface of the boss is fixedly connected with the switch sensor, and the signal contact of the switch sensor extends into the Inside the through hole; the connection end of the switch sensor and the cable is sealed with glass sealing.

There are three sealing rings as mentioned above.

The pendulum, rotating shaft and rotating drum of the above-mentioned switch assembly are made of stainless steel, and the sealing ring is made of rubber material; the switch sensor is realized by SZ-3108 sensor produced by SSA Company; the cable is realized by general-purpose cable; the ground The control system is realized by PLC.

The beneficial effects of the present invention are:

The invention includes switch assembly, switch sensor, cable and ground control system. The invention can meet the test requirement of 50 meters underwater by providing a sealing ring in the switch assembly and a glass seal in the switch sensor, and has the characteristics of low cost and high reliability. After several underwater tests of the vehicle body, the switch works normally, which can ensure the smooth completion of the test.

Description of drawings

Fig. 1 is a schematic diagram of the composition of a watertight mechanical limit switch of the present invention;

Fig. 2 is a connection schematic diagram of a switch assembly and a switch sensor of a watertight mechanical travel switch of the present invention;

Fig. 3 is a front view of a switch assembly of a watertight mechanical travel switch of the present invention;

Fig. 4 is a top view of a switch assembly of a watertight mechanical limit switch of the present invention;

Fig. 5 is a left view of a switch assembly of a watertight mechanical limit switch of the present invention.

Among them: 1. Switch assembly, 2. Switch sensor, 3. Cable, 4. Ground control system, 5. Swing rod, 6. Rotating shaft, 7. Rotary drum, 8. Sealing ring.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in FIG. 1 and FIG. 2 , a watertight mechanical travel switch includes a switch assembly 1 , a switch sensor 2 , a cable 3 and a ground control system 4 . The switch assembly 1 is fixedly connected to the input end of the switch sensor 2 , the output end of the switch sensor 2 is connected to one end of the cable 3 , and the other end of the cable 3 is connected to the input end of the ground control system 4 . The switch assembly 1 is used to transmit the touch of the vehicle simulation device to the switch sensor 2 . The switch sensor 2 is used to generate an in-position signal of the vehicle simulator after the vehicle simulator touches the switch assembly 1 , and then send the in-position signal to the ground control system 4 . The cable 3 is used to transmit the arrival signal of the vehicle simulator. The ground control system 4 is used to collect the signal that the vehicle simulator is in place.

As shown in FIG. 3 , FIG. 4 and FIG. 5 , the switch assembly 1 includes a swing rod 5 , a rotating shaft 6 , a drum 7 and a sealing ring 8 . The swing rod 5 is in the shape of a rectangular plate as a whole, and is fixedly connected to the upper end surface of the rotating shaft 6 . The pendulum 5 is used to contact with the navigation body simulation device to drive the rotating shaft 6 to rotate. The rotating shaft 6 is screw-shaped as a whole. The upper part of the rotating shaft 6 is a cylindrical plate shape, and the upper end surface of the upper part is fixedly connected with the swing rod 5; the middle part of the rotating shaft 6 is cylindrical, and the outer surface is provided with a sealing ring 8 along the length direction. There are three sealing rings 8; the lower part of the rotating shaft 6 is " L" shaped plate. The rotating shaft 6 is used to apply force to the switch sensor 2 . The main body of rotating drum 7 is cylindrical, with a cylindrical groove in the center. The size of the groove matches the size of the middle and lower parts of the rotating shaft 6. The middle and lower parts of the rotating shaft 6 extend into the groove, and the inner wall of the groove Fit closely with sealing ring 8. The right side of the main body bottom of rotating drum 7 is embedded with a cuboid boss, and the central part of the boss has a through hole along the horizontal direction, and the through hole communicates with the groove of the main body. The right end face of the boss is fixedly connected with the switch sensor 2, and the signal contact of the switch sensor 2 extends into the inside of the through hole of the boss. The connecting end of the switch sensor 2 and the cable 3 is sealed by glass sealing.

In this embodiment, the swing rod 5, the rotating shaft 6 and the drum 7 of the switch assembly 1 are made of stainless steel, and the sealing ring 8 is made of rubber; the switch sensor 2 is realized by a SZ-3108 sensor produced by SSA Company; The cable 3 is realized by a general-purpose cable; the ground control system 4 is realized by a PLC.

After the underwater test of the vehicle body starts, the vehicle simulator moves in the horizontal direction and touches the swing rod 5 of the switch assembly 1. The swing rod 5 drives the rotation shaft 6 to rotate. The signal contact 2 exerts an active force, so that the switch sensor 2 generates a signal that the navigational body simulation device is in place, and the switch sensor 2 sends the signal to the ground control system 4 through the cable 3, and the ground control system 4 receives the signal that the navigational body simulation device is in place. Collect the signal.

The present invention includes a switch assembly 1 , a switch sensor 2 , a cable 3 and a ground control system 4 . The invention can meet the test requirement of 50 meters underwater by providing a sealing ring in the switch assembly and a glass seal in the switch sensor, and has the characteristics of low cost and high reliability. After several underwater tests of the vehicle body, the switch works normally, which can ensure the smooth completion of the test.

Claims (4)

1. a watertight mechanical formula travel switch, it is characterised in that: it includes switch module (1), switch sensor (2), cable (3) and ground control system (4); Switch module (1) is fixing with the input of switch sensor (2) to be connected, the outfan of switch sensor (2) is connected with one end of cable (3), and the other end of cable (3) is connected with the input of ground control system (4).

2. watertight mechanical formula travel switch according to claim 1, it is characterised in that: described switch module (1) includes fork (5), rotating shaft (6), rotating cylinder (7) and sealing ring (8); Fork (5) generally rectangle tabular, is fixedly connected on the upper surface of rotating shaft (6); Rotating shaft (6) generally screw shaped; Rotating shaft (6) top is cylindrical tabular, and the upper surface on top is fixing with fork (5) to be connected; Rotating shaft (6) middle part is cylindrical, and outer surface is provided with sealing ring (8) along its length; Rotating shaft (6) bottom is " L " shape tabular; Rotating cylinder (7) main body is cylindrical, center has cylinder shape groove, the size of this groove matches with the middle part of rotating shaft (6) and the size of bottom, middle part and the bottom of rotating shaft (6) extend in groove, and the inwall of groove and sealing ring (8) closely cooperate; The right side of the lower body part of rotating cylinder (7) embeds a cuboid boss, and the centre of boss has through hole in the horizontal direction, and this through hole is connected with the groove of main part; The right side of boss is fixing with switch sensor (2) to be connected, and the signalling contact of switch sensor (2) stretches into inside the through hole of boss;The link of switch sensor (2) and cable (3) adopts glass sealing to seal.

3. watertight mechanical formula travel switch according to claim 2, it is characterised in that: described sealing ring (8) has three.

4. watertight mechanical formula travel switch according to claim 2, it is characterized in that: the fork (5) of described switch module (1), rotating shaft (6) and rotating cylinder (7) adopt stainless steel material to make, sealing ring (8) adopts elastomeric material to make; Switch sensor (2) adopts the SZ-3108 type sensor that SSA company produces to realize; Cable (3) adopts universal cordage to realize; Ground control system (4) adopts PLC to realize.