Manual wire tightener

The utility model discloses a manual tightener, which is suitable for fixing an electric wire and an insulator and comprises a fixed block, a movable block, a rack and a ratchet wheel driving device meshed with the rack, the fixing block is arranged at one end of the rack, and a threading hole is formed in the fixing block; the movable block is fixedly connected with the ratchet wheel driving device, a threading hole matched with the fixed block is formed in the movable block, and an arc-shaped groove matched with an insulator is formed in the opposite side face of the fixed block or the movable block; the ratchet wheel driving device is provided with a gear seat, a gear and a pawl handle, the gear seat is sleeved on the outer side of the rack, the gear is rotatably arranged on the gear seat, the gear is meshed with the rack, the pawl handle is hinged with the gear seat and is provided with a pawl matched with the gear, and the gear seat is fixedly connected with the moving block. According to the utility mod