Hydraulic brake of truss lifting electric stage hoist: It realizes braking control by virtue of a hydraulic transmission system, and is mainly composed of a hydraulic pump, brake cylinder, brake pad, brake disc (or brake wheel) and oil pipeline. During operation, the hydraulic pump converts mechanical energy into hydraulic energy, and delivers high-pressure hydraulic oil to the brake cylinder through the oil pipeline, pushing the piston to drive the brake pad to closely fit with the brake disc, thereby generating braking force. When the brake needs to be released, the hydraulic system reduces pressure, and the return spring pulls the brake pad back, making the contact
surfaces separate. Compared with the electromagnetic brake of truss lifting electric stage hoist, the braking force adjustment of the hydraulic brake is more delicate. It can realize linear changes of braking force by controlling the pressure of hydraulic oil. When hoisting large lighting trusses (which can weigh up to several tons), it can avoid the impact force caused by sudden stops from damaging the truss structure. For example, in the stage setup of large-scale concerts, the huge truss carrying dozens of moving head lights needs to be slowly lifted to a specified height. The hydraulic brake of the truss lifting electric stage hoist can ensure that it remains stable during the lifting process. Even in case of sudden load fluctuations (such as air flow impact), it can quickly adjust the braking force through pressure compensation to prevent the truss from bouncing or settling. At the same time, the buffering effect of the hydraulic medium can also reduce noise and vibration during braking, which is crucial for concert hall performances that require a strict acoustic environment.
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