When the stopper (collision block) of the sports machine is pressed on the roller of the #travelswitch, the transmission bar rotates together with the rotating shaft, so that the cam pushes the collision block, and when the collision block hits a certain position, it pushes the micro switch to move quickly. When the stopper on the roller is removed, the return spring resets the travel switch. This is a single-wheel automatic recovery type travel switch. The two-wheel rotary travel switch cannot be restored automatically. It relies on the reverse movement of the sports machine, and the stopper hits the other roller to restore it.
When the striker on the controlled machine hits the striker rod with the roller, the striker rod turns to the right, drives the cam to rotate, pushes down the push rod, and makes the contacts in the micro switch move quickly. When the moving machine returns, under the action of the return spring, each part of the moving parts is reset.
Composition of roller travel switch
1: Roller 2: Upper arm 3&5&11: Spring 4: Sleeve
6: Pulley 7: Pressure plate 8&9: Contact 10: Horizontal plate
The roller type #travelswitch is divided into single roller automatic reset and double roller (claw type) non-automatic reset type. The double roller #travelswitch has two stable positions and has a “memory” function, which can simplify the circuit in some cases.
The principle of the roller #travelswitch: when the stopper (collision block) of the moving machine is pressed on the roller of the travel switch, the transmission bar rolls together with the rotating shaft, so that the cam pushes the collision block. Quick action of the switch. When the stopper on the roller is removed, the reset tension resets the travel switch. This is a single-wheel active recovery travel switch. However, the two-wheel rotary travel switch cannot be recovered automatically. It is recovered by the stopper bumping against another roller when the moving machine moves in the reverse direction.
The roller type #travelswitch is divided into two types: single roller automatic reset and double roller non-automatic reset. The mechanism principle of the single roller automatic reset travel switch is shown in the figure on the right. When the collision block pushes the roller 1 from right to left, the pendulum 2 rotates counterclockwise around the fixed fulcrum 3, so the roller 4 rolls to the right, and the spring 5 is compressed to store energy. When the roller 4 rolls over the T-shaped pendulum 11 When the middle point and the pressing plate 6 are pushed open, the T-shaped swing rod 11 rapidly rotates clockwise under the action of the spring 5, so that the normally closed contact 7 is rapidly opened, and the normally open contact 8 is rapidly closed. When the striker leaves the roller, under the action of the return springs 9 and 10, the contact returns to its original state. The upper part of the swing lever of the double-roller non-automatic reset travel switch is V-shaped, and there are two rollers on it. There is no return spring inside. The other structure is completely the same as the roller-type travel switch. Influence of movement speed, fast action: its disadvantage is that the structure is more complicated and the price is more expensive. Commonly used roller travel switches are Z5, Z7, Z93 and other series.
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