1. Ordinary fully automatic three-roll gate movement : Ordinary automatic three-roll gate movement is realized by the combination of a motor and a special grooved sheave mechanism. When passing through, it automatically rotates forward by a certain angle, and the person gently touches the gate.
2, mechanical anti-reduction reverse three-roll gate movement: mechanical anti-reduction reverse three-roll gate movement is based on the simple electromagnet movement improved, can achieve anti-reverse, buffer function.
3, simple mechanical electromagnet tri-roll gate movement: simple mechanical electromagnet tri-roll gate movement easy to use, simple function.
4, automatic mute three roller gate movement: automatic mute three roller gate movement is based on the mainstream of foreign high-speed three roller gate based on the latest ARM control technology, the use of industrial-grade control processing to complete a The brand-new product, the whole product is very stable in starting and shutting down during the operation process, can realize the braking and locking fast, it is the industry's first mute three-roller gate combined with the multi-channel multi-sensor and is the first in China. Successfully applied and equipped in a large number of prisons, high-speed, silent, and fully automatic switch.
Three roller brake composition instructions
The three-roll gate core is mainly composed of a main shaft, an electromagnet, a toothed cam, a positioning cam, a travel switch, a damper, a spring, and a lever dropping device. When the three-roll gate driver board (hereinafter referred to as the driver board) receives the opening signal, one of the relays is closed and the corresponding electromagnet is turned on, which causes the locking arm to contract and release the lock on the toothed cam. At this time, the pedestrian needs only light Push the lever gently to move it in the unlocked direction. With the rotation of the spindle, once the limit switch hits the screw, the former gives a signal to the driver board, indicating that the pedestrian has passed and completes the action; at the same time, the electromagnet returns to the original state, the locking arm extends, the positioning cam, the positioning rod ( Including the bearings (coupled with it), the damper, and the spring start working, buffering the elastic potential energy just accumulated until the locking arm acts again with the toothed cam. The lever-down device is installed on the bearing seat 2#. Once the power is cut off, the brake lever falls and a transparent channel is formed.
The locking action of the locking device is achieved by the head of the locking arm gripping the teeth of the set of toothed cams.
The polyurethane toothed cam, which is part of the toothed cam set, reduces the noise generated by the locking arm acting on the cam tooth. The profile of the cam makes it possible for the spindle to be locked at intervals of 5 seconds during rotation. (The card is not pushed) The lock arm is pivotally mounted to the base and can be swung by the pull-in of the electromagnet mounted on the base. One of the solenoids locks clockwise and the other locks counterclockwise.
Excitation of the electromagnet causes the lock arm to move and mesh with the cam teeth to prevent the three roller gate from rotating in this direction. When the electromagnet is powered off, the locking arm returns to its original position under the action of the spring and catches the cam.
The function of the anti-reversal device anti-reversal device is to prevent the rotation unit from rotating in the opposite direction to the original direction. That is, once the three arms are rotated in one direction, the device will prevent it from rotating in the opposite direction. The lock arm 1# rapidly moves left to the limit position by the electromagnet and unlocks the toothed cam 1#. At this time, the lock arm 2 # spindle positioning cam bearing housing 2 # bearing seat 1 # spring damper travel switch tooth cam 2 # lock arm 1 # toothed cam 1 # solenoid positioning rod bearing diagram lock arm screw does not move, still The rotation of the toothed cam 2# in the opposite direction is restricted.
The positioning cam positioning cam is a guide rail with a special contour (as shown below). In the guideway, the three points that are the shortest from the center of the circle are spaced 120 degrees apart and they correspond to the three fence positions of the three bars. These three points are connected by three trajectories rising and falling.
The three lever arm drives the positioning cam to rotate, driving the two positioning rods to move in a straight line. One end of the rod is connected to the bearing and the other end is connected to a damper (one of the connection springs).
Once the bearing passes the apex of the cam track, the pressure created by both the spring and the damper causes the rotation unit to continue to rotate until the three arm returns to the fence position. The pretension of the spring can be adjusted by the screw.
The function of the damper damper is to adjust the spring force and buffer the entire rotation process. During the first half of the rotation (ie, the lift in the positioning cam), the damper expands; during the second half of the rotation (ie, the descent), the damper contracts. During the entire rotation process, the damper exerts a buffering effect in proportion to the rotation speed, and the scale of the oil pressure can be adjusted according to the magnitude of the force, 1-8 (from small to large and vice versa to small).
Travel switch The function of the travel switch is that when the brake lever rotates to a certain angle (about 110 degrees), the travel switch on the resetter contacts the screw, automatically detects an in-position signal and sends this signal to the three-roll gate drive plate.
Three arm (dial)
The turntable is mounted on the main shaft by three bolts. It consists of three brake levers, three rotary blocks and a drop lever with spring plate. In the absence of the lever, the angle between the three levers is equal, one of which remains horizontal and acts as a fence.
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