Inflatable cabinet accessories - composition of spring operating mechanism and mechanical anti-jump principle:

Inflatable cabinet fittings - composition of the spring operating mechanism:

The spring operating mechanism is mainly composed of a box, a secondary control part, and a mechanism core frame;

(1) Cabinet:

It mainly protects the secondary control part and the core frame part of the mechanism in a relatively closed space, and the protection level of the box is IP54;

(2) Secondary control part:

In the operating mechanism box, there is a complete secondary control and protection loop, such as overload and timeout of the energy storage motor, on-site and remote operation options, with anti-jump circuit and SF6 gas density monitoring system;

(3) Mechanism core frame:

Main components: camshaft assembly - opening mechanism assembly - closing mechanism assembly - closing spring assembly - opening spring assembly - operating mechanism final assembly;

1. Camshaft assembly:

The camshaft assembly is composed of ratchet assembly, micro switch assembly and clutch, etc., which completes the function of closing spring energy storage and realizes the control of the energy storage motor through the micro switch.

2. Assembly of the opening mechanism:

The assembly of the opening mechanism is composed of the opening solenoid, the crutch arm, and the opening switch. complete the maintenance of the closing position and accept the opening command for the opening operation;

3. Closing mechanism assembly:

The assembly of the closing mechanism is composed of closing electromagnet, anti-trip device, closing energy storage holding brake, etc. After completing the closing spring energy storage, maintain and accept the closing command for closing operation;

4. Closing spring assembly:

Closing spring assembly includes closing spring barrel, tie rod, closing spring, etc.;

5. Opening spring assembly:

The opening spring assembly includes the opening spring, oil buffer assembly, etc.;

Mechanical anti-jump principle of inflatable cabinet fittings - spring operating mechanism:

The anti-tripping performance of the circuit breaker can be achieved in two aspects: the mechanical anti-jump performance of the operating mechanism itself, and the second is the "anti-jumping" line set in the closing circuit of the operating mechanism. Figure 4 introduces the principle of mechanical anti-jump device, and its operation process is as follows:

1) The state shown in Figure A is that the switch is in the opening position, at this time the closing spring is in the state of energy storage (the opening spring has been released), the cam is connected to the ratchet through the camshaft, and the ratchet is affected by the force of the energy stored closing spring, and there is a clockwise torque, but the closing trigger and the closing spring energy storage keep the switch locked under the action of the switch, and the switch remains in the opening position;

2) When the closing electromagnet is excited by the closing signal, the core rod drives the closing striker to press down the anti-trip pin first and then hit the closing trigger. The closing trigger rotates in a clockwise direction and releases the closing spring energy storage holding brake, which rotates counterclockwise to release the shaft pin on the ratchet. The closing spring force makes the ratchet drive the camshaft to rotate in a counterclockwise direction, so that the main crutch arm rotates clockwise, and the circuit breaker completes the closing;

3) The roller pushes the slewing surface of the tripper to make it turn counterclockwise further. Thus, the tripper rotates the trip bar clockwise (see Fig. 4b) and slips off the anti-trip pin, which keeps the trip bar tilted (see Fig. 4c).

4) The circuit breaker is closed, the closing signal disappears, and the electromagnet is reset (see Figure 4d);

5) If the circuit breaker gets an unexpected opening signal at this time and starts to open the door, in the process of opening the gate, as long as the closing signal is maintained, the tripping rod is always tilted due to the role of the anti-tripping pin, so the core rod cannot hit the tripper, therefore, the circuit breaker cannot repeat the closing operation (see Figure 4e) to achieve the anti-tripping function;

When the closing signal is released, the closing electromagnet loses magnetism, and the core rod returns through the inner spring of the electromagnet, then the core rod and the tripping rod are in the state of Figure 4a, ready for the next closing operation.