4results about How to "Without destroying the integrity" patented technology

The present application relates to elevator technology field, specifically relates to a kind of elevator with hidden emergency device of car, including the car in hoistway, installation port is opened in the thickness direction through in car side wall, and rotatingly installed with display device in car inner wall.Display device blocks installation port, and power supply assembly, controller and speed sensor are embedded in display device.Display device is electrically locked between car, and electrically locked is used to lock display device and car.Car outside is provided with anti-falling brake mechanism, and the rear side of display device close to installation port is hinged with one end of pull rod assembly, and the other end of pull rod assembly is connected with the locking assembly of anti-falling brake mechanism after passing through installation port, and anti-falling brake mechanism has working state and locking state.In locking state, locking assembly locks anti-falling brake mechanism, and anti-falling brake mechanism does not hinder the lifting of car.

The application discloses an embedded air purification module and a laser, wherein the embedded air purification module comprises an air purification frame, an air exchange assembly and a filtering unit arranged in the air purification frame, and a connecting part arranged on the air purification frame. In the embodiment of the application, the embedded air purification module and the laser are adopted, the air purification module is embedded on the laser body, the structure has high integrity and occupies small space, the output of the to-be-purified gas to the filtering unit is realized through the air exchange assembly, the to-be-purified gas is purified under the filtering effect of the filtering unit, meanwhile, the connecting part and the positioning hole are inserted and matched, the overall assembly and disassembly of the air purification module are facilitated, the filter material and the fault parts in the air purification module can be replaced and maintained in time, the connecting part and the positioning hole are provided with a guide and a multi-stage sealing design, blind insertion self-alignment and movable plugging can be realized, high-level sealing of the purification channel is realized, and leakage is effectively prevented.

The present invention discloses a composite prestressed reinforcement system for a hydraulic concrete structure and a construction method thereof, which relates to the field of hydraulic concrete structure reinforcement systems. The composite prestressed reinforcement system for a hydraulic concrete structure comprises: a prestressed carbon fiber plate, the two ends of the prestressed carbon fiber plate are respectively fixed to the bottom end of a hydraulic concrete T-beam through a first anchoring mechanism and a first tensioning mechanism; and at least two prestressed steel strands are also included, the prestressed steel strands are symmetrically fixed below the partitions on the two sides of the bottom of the hydraulic concrete T-beam, one end of the prestressed steel strand is connected to the second tensioning mechanism, and the other end is connected to the second anchoring mechanism; the construction method comprises: laying out and positioning, base surface treatment; anchor installation; prestressed carbon fiber plate, prestressed steel strand installation and laying; glue preparation, application of carbon fiber plate adhesive; prestressed tensioning, locking; surface sealing treatment. The composite prestressed reinforcement system for a hydraulic concrete structure and a construction method thereof provided by the present invention can effectively increase the strength and rigidity of the structure, improve the bearing capacity of the structure, and at the same time reduce the deflection and deformation of the structure, and can play a role in reducing and sealing cracks.

This invention relates to a Bluetooth headset with dual listening modes, comprising a control unit, a stand, an over-ear headset, a storage drive unit, and an in-ear headset with an ear wire and an ear tip. The over-ear headset is mounted on the stand, and both the control unit and the storage drive unit are installed in the over-ear headset. The control unit is communicatively connected to both the over-ear headset and the in-ear headset. The ear wire is installed in the storage drive unit, with one end of the ear wire passing through the over-ear headset and connecting to the ear tip. The ear tip protrudes from the over-ear headset. Listening can be performed directly using the over-ear headset; alternatively, listening can be performed by pulling the ear tip to extend the ear wire from the storage drive unit, which then locks the current position. To remove the ear wire, the storage drive unit retracts the ear wire. It features a headset, a storage driver unit, and an in-ear headset. The storage driver unit and in-ear headset are integrated into the headset, achieving a dual-mode integrated design. The headband and neckband modes can be switched simply by extending or retracting the ear cable. This design retains the sound quality advantages and wearing stability of over-ear headphones while also providing the portability of neckband headphones.