30results about How to "Prevent accidental pulling" patented technology

The invention relates to an anti-falling device, in particular to a device combining advertisements and an elevator anti-falling prompt. The device comprises a lift car, guide rails, stopping slidingblocks, stop blocks, centrifugal clutches, safety pull ropes, a safety box and a display system, wherein sliding grooves which are fixedly connected with the lift car are symmetrically arranged on thetop face of the lift car, the stopping sliding blocks are arranged in the sliding grooves and are in sliding connection with the sliding grooves, the driving ends of the centrifugal clutches are fixedly connected with rolling guide shoe shafts of the lift car, the driven ends of the centrifugal clutches are connected with a transmission shaft, a pull ring is arranged in the safety box, the display system is arranged on the inner wall of the lift car, an emergency prompt video is planted in the display system, and when a selector switch is triggered, the display system is switched to play theemergency prompt video, the stop blocks are arranged on the well wall, and buffer springs are arranged on the stop blocks. According to the device, emergency braking of passengers due to misoperationcan be prevented, an emergency prompt video can be played when the lift car falls at the overspeed, the passengers are reminded to carry out emergency braking at the first time, and the safety coefficient of the lift car is improved.

The invention discloses a timing initiation device and method. The device comprises a shell; the shell is provided with a key, a display screen, a mechanical fuse and an electric detonator socket connected with an electric detonator; a microcontroller electrically connected with the key and the display screen and an initiation circuit electrically connected with the microcontroller are mounted inthe shell; a common end of a single-pole double-throw switch is electrically connected with the electric detonator socket, a normally closed end is grounded, and a normally open end is electrically connected with the initiation circuit; a poking piece of the single-pole double-throw switch is defaulted to communicate with the common end and the normally closed end; under the condition of relievingthe mechanical fuse, the poking piece communicates with the common end and the normally open end; and a battery supplies electricity to the device through a power supply management module. The timinginitiation device is small in size, low in weight, simple in operation, high in automation degree and convenient to carry; users can autonomously set the timing time; and the electric detonator is initiated to realize initiation after timing.

The invention relates to the technical field of fixing devices, in particular to a secondary interlocking bracket for electric control cabinets and an aviation plug matched with the same. The secondary interlocking bracket for electric control cabinets comprises a bracket body, a secondary interlocking mechanism, a mounting part and a holding space, the mounting part is arranged on the bracket body and used for fixing the secondary interlocking bracket on an electric control cabinet, and the holding space is used for holding the secondary interlocking mechanism. The structure of the secondary interlocking bracket is simple, and moreover, the secondary interlocking bracket can provide a supporting space for the secondary interlocking mechanism. Meanwhile, the application also provides the aviation plug matched with the secondary interlocking bracket, and the pin plug is provided with a bolt; by inserting a bolt head of the bolt into a limit hole of the secondary interlocking bracket, the bolt can be fixed, and moreover, the aviation plug can be further locked, and thereby can be effectively prevented from being pulled out by mistake or coming off.

The invention provides a rotary self-locking SC type optical cable connector and an assembly structure thereof. A mortise provided with a tail handle as well as a spring and a locking seat are arranged between an SC inner frame and an SC rotary outer frame of the connector, a rotary pull rod, a loudspeaker ring and a circular ring are arranged between the SC rotary outer frame and a tail sleeve, and an optical cable is connected from the tail sleeve; an inclined boss and a raised column are arranged at the top of the SC inner frame, and arc-shaped holes matched with an arc-shaped fixture blockon the locking seat are formed in the two side walls of the rear end of the SC inner frame; a first groove matched with the raised column is formed in the top of the SC rotary outer frame, the frontend of the SC rotary outer frame is matched with the inclined boss, a second groove is formed in the rear end of the SC rotary outer frame, and a third groove is formed in the front end of the SC rotary outer frame; and a fixture block matched with the second groove is arranged at the front end of the rotary pull rod, and a handle is arranged at the rear end of the rotary pull rod. The rotary self-locking SC type optical cable connector provided by the invention locks an optical cable connector by virtue of a specific self-locking structure, the connector is prevented from being pulled out bymistake, connection reliability of the connector with an adapter is guaranteed, smooth network signal connection is guaranteed, and use safety of the connector is improved.

The invention discloses a connecting structure of a charging interface, which is simple in structure and can reduce the manufacturing cost. The connecting structure comprises a plug and a socket, wherein the socket comprises a socket shell and a socket body installing seat which is arranged in the socket shell, and a connecting end of the socket shell is provided with a circular socket barrel; the plug comprises a plug body installing seat and a plug shell which is connecting with the plug body installing seat, a pulling preventing cover is movably sheathed on the plug shell and the plug body installing seat, the inner wall of the pulling preventing cover is provided with circumferential inner connecting threads and a limiting boss in sequence along the pulling-out direction, a circumferential in-place boss is arranged on the plug body installing seat, and the limiting boss and the inner connecting threads are positioned at two sides of the placing-in boss; and outer connecting threads which are matched with the inner threads are arranged on the outer wall of the circular socket barrel. By the mutual matching of the pulling preventing cover and the circular socket barrel of the socket shell, the connecting structure can achieve the purpose that the pulling by mistake is prevented, and eliminates potential safety hazards.

The invention provides a goat skin hard hair automatic plucking device, and relates to the technical field of fur processing. The goat skin hard hair automatic plucking device includes a casing, a conveying device, a first driving motor, a tensioning mechanism, a needle pulling mechanism, a collecting mechanism, a rotating shaft, a bracket and a fifth driving motor; a bracket is fixedly connectedto the bottom of the casing; the conveying device is arranged at the position, close to the bottom end, in the casing; the rotating shaft penetrates through the position, close to the bottom end, of the casing and penetrates through the conveying device arranged in the casing; the rotation shaft is rotationally connected to the casing; the part, penetrating through the left end of the conveying device, of the rotating shaft is fixedly connected with the first driving motor. The tensioning mechanism is arranged above the conveying device. The needle pulling mechanism is arranged at the position, close to the top end, of the casing. The needle pulling mechanism is fixedly connected to the casing. The collecting mechanism is arranged at the position, above the conveying device, of the right side of the casing. The collecting mechanism is fixedly connected to the inner wall of the casing. The problem of low plucking efficiency of hard hair on goat skin during the goat skin processing is solved.

The invention belongs to the technical field of electrical equipment, and particularly relates to an anti-drop plug and socket based on a thermal expansion principle. The anti-drop plug comprises a plug, a socket, and plug sheets and an external wire which are arranged in the plug, wherein a cavity is arranged in the plug, and the bottom of the plug is fixedly connected with a clamping block. A clamping groove matched with the clamping block is formed in the upper surface of the socket, a transparent shell is arranged in the cavity, the transparent shell is filled with nitrogen dioxide and nitrogen tetroxide mixed gas, a heating pipe is fixedly connected to the inner side wall of the transparent shell, and an electric heating wire is arranged in the heating pipe; the plug sheets comprise alive wire plug sheet and a zero wire plug sheet, the live wire plug sheet is electrically connected with an external connection wire through an electric heating wire, and a sliding cavity is formed in the clamping block. According to the invention, the positions of the plug and the socket can be fixed and locked during working, so that the problem that the plug falls off due to artificial mistaken touch, collision or external wire tripping and the like is effectively avoided.

The invention relates to a mistaken-pull prevention spiral infusion apparatus convenient and quick to dismount. The mistaken-pull prevention spiral infusion apparatus comprises a plug needle, a drip chamber, a flow regulator and an infusion needle, wherein the plug needle comprises a conical thrusting needle and a thrusting needle seat, the conical thrusting needle is connected to the thrusting needle seat, and more than one circle of threaded or spiral grooves are formed in the outer conical face of the conical thrusting needle. An infusion bottle/bag is engaged and connected by adopting the threaded or spiral grooves formed in the outer conical face of the conical thrusting needle of the plug needle, the infusion apparatus can be effectively fixed, the plug needle of the infusion apparatus can be prevented from mistakenly pulled out or dropping out of the infusion bottle/bag, and safe, complete and effective infusion treatment can be ensured.

The invention discloses an anti-pulling and anti-breaking power line for a storage battery. The power line comprises a plurality of wire cores, a first insulating layer, a braided layer, a second insulating layer and an anti-pulling and anti-breaking sheath. The plurality of wire cores are intertwisted and wound with each other. The wire cores are wrapped by the first insulating layer. The first insulating layer is wrapped by the braided layer. The braid layer is wrapped by the second insulating layer. The second insulating layer is wrapped by the anti-pulling and anti-breaking sheath. According to the invention, the anti-pulling and anti-breaking sheath is arranged outside the power line, the anti-pulling and anti-breaking performance of the storage battery power line is improved throughan anti-pulling core in the anti-pulling and anti-breaking sheath, the power line is prevented from being broken due to excessive bending, the power line is firmer, the identification degree of the power line can be improved by arranging a fluorescent strip on a surface of the anti-pulling and anti-breaking sheath, and a condition that the power line is mistakenly touched and pulled in a dark environment is prevented.

The invention discloses a socket with sound equipment. The socket comprises a shell, a sound assembly is installed on the upper portion in the shell, a USB plug assembly is installed on the lower portion in the shell, sound transmission and heat dissipation holes are formed in the side wall of the shell, and an electric wire is arranged on the upper portion of the rear portion of the shell. A sound box and the socket are integrated together, the functions are rich, and music and alarm can be given out; and the side wall is provided with the sound transmission and heat dissipation holes, so that on one hand, the sound transmission and heat dissipation holes are beneficial to heat dissipation, temperature rise caused by short circuit is prevented from being too fast, and sound transmission is facilitated.

The invention relates to the technical field of switch equipment, and discloses a stably fixed switch socket capable of preventing mistaken unplugging, which comprises a shell, a jack is fixedly mounted in the shell, a movable rod is slidably mounted on the inner wall of the jack, and a contact is fixedly mounted at one end, away from the jack, of the movable rod. A movable plate is slidably connected to the top end of the interior of the inserting hole, a connecting plate is fixedly installed at the top end of the movable plate, a driving rod is rotatably connected to the front end of the connecting plate, and a sliding block is rotatably connected to the end, away from the connecting plate, of the driving rod. According to the invention, the data line is fixed after the data line is plugged into the jacks, the phenomenon that normal use of equipment is affected by poor contact in the use process is prevented, the data line is fixed when oblique external force occurs at the interface of the data line, and normal use of people is prevented from being influenced by mistaken unplugging of the data line.