A hydraulically loaded synchronous pulley transmission overload protection and alarm device

Abstract

The invention discloses a hydraulically loaded synchronous pulley transmission overload protection and alarm device, which belongs to the technical field of synchronous pulleys. The synchronous pulley, a loading hydraulic cylinder body, a washer and a lock nut are installed on a transmission shaft and loaded on a hydraulic cylinder body. Three loading hydraulic cylinder holes are processed, the hydraulic piston is processed at the right end of the loading hydraulic cylinder shaft, the friction plate is welded on the left end of the loading hydraulic shaft, the hydraulic piston is inserted into the loading hydraulic cylinder hole, and the small generator is fixed on the disc. In the hole, the alarm light is installed in the alarm light installation hole on the disc. The alarm light is connected to the small generator through the line, and the transmission rubber wheel is installed on the small generator. Rotational movement occurs between the shafts, which plays the role of overload protection. At the same time, the drive transmission rubber wheel rotates to make a small generator generate electricity, and the alarm light lights up to realize an alarm, preventing parts from being damaged due to overload transmission, and problems such as tooth jumping and slipping of the synchronous belt.

Description

technical field [0001] The invention relates to a hydraulically loaded synchronous pulley transmission overload protection and alarm device, which belongs to the technical field of synchronous pulleys. Background technique [0002] Timing belt drives transmit motion by the engagement of equally spaced transverse teeth on the inner surface of the belt and corresponding cogs on the pulley. Compared with the friction belt drive, there is no relative slip between the pulley and the drive belt of the synchronous belt drive, which can ensure a strict transmission ratio. Synchronous belt drive has the advantages of belt drive, chain drive and synchronous pulley drive. Since the belt and the pulley are meshed to transmit motion and power, there is no relative slip between the belt and the pulley, which can ensure an accurate transmission ratio. , The synchronous belt usually uses steel wire rope or glass fiber rope as the tensile body, and neoprene or polyurethane as the matrix. Th...

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Problems solved by technology

[0003] Most of the existing synchronous belt pulleys are assembled with keys and keyways for installation and fixation. During the drive process of synchronous belt transmission, on the one hand, if the load is too large, the drive motor or transmission parts will be damaged. On the one hand, if the load is too large, it may also cause tooth jumping and slipping between the synchronous belt and the synchronous pulley, resulting in wear of the synchronous belt. In severe cases, it will cause the synchronous belt to burn, resulting in safety production accidents

In order to overcome the problems in synchronous belt transmission, the design of overload protection device on the synchronous pulley is mainly adopted at present. Most of the overload protection devices of synchronous pulley in the prior art use mechanical locking devices (such as lock nuts) to increase friction Structural friction can further realize overload protection, but the disadvantage of using mechanical locking is that once an overload protection occurs and the friction structure wears to a certain extent (such as the thickness of the friction plate is reduced), the overload protection device will have a gap, resulting in overload. The protection device is completely invalid and must be re-locked; for the overload operation of the synchronous belt drive, the current existing technology mainly uses manual observation or indirect detection to find that the equipment is overloaded, and there is no special direct overload alarm device. When the equipment is overloaded, it cannot If it is found or cannot be found in time, it will cause damage to the equipment

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