The invention discloses a space compressing and releasing device. The device comprises a pressing plate, a pressing plate rotating shaft, a shell, a separation nut, an outer cover, a wire clamping plate, a screw, a locking nut, a hanging plate rotating shaft, a hanging plate
torsion spring, a pressure spring, a nut, a pin shaft, a roller support, a roller, a bottom cover, a guide support, a baffle, a right pressing plate
torsion spring, a left pressing plate
torsion spring, a limiting nut, a hanging plate, a fixed base and a pressing piece. According to the space compressing and releasing device, a product with functions of manual compressing, manual releasing and space initiating explosive releasing can be achieved, a mechanism, a spring and an initiating
explosive device are highly integrated by the product, and the mechanism is driven by the
spring force to reliably release a compressing piece after initiating explosive
detonation. The problem that ground test
verification is difficult to achieve due to one-time work of an existing product is effectively solved.