54results about How to "Latch implementation" patented technology

The invention relates to a flexible DC power transmission converter valve control protection system and a valve control blocking method, and belongs to the technical field of flexible DC power transmission of an electric power system. A pole control interface unit arranged at the uppermost layer of a valve control system is enabled to be connected with submodule interface units arranged at the lowest layer of the valve control system via an independent communication channel. When a fault occurs in the valve control system, an emergency blocking signal is transmitted to submodules by a pole control system directly via the independent communication channel between the pole control interface unit and the submodule interface units so that blocking of a converter valve is realized. The pole control system and the submodules in the converter valve are connected via the independent communication channel. When the fault occurs in the valve control system and the converter valve requires to be blocked, the emergency blocking command is directly transmitted to the submodules by the pole control system via the communication channel so that blocking of the submodules is realized. The submodules of the converter valve can still be protected from being damaged when the fault occurs in the valve control system, and the system is simple and easy to realize.

The invention discloses a manual interlocking device of a three-station mechanism. The manual interlocking device comprises a side board arranged on the mechanism, a DS baffle and an ES baffle, wherein the DS baffle and the ES baffle are arranged on the side board. A mechanical interlocking device supporting board, a pair of driving pins which are vertically connected in a sliding mode along the side board, and a pair of cams which are arranged along the inner sides of the driving pins in parallel are arranged at the front end of the side board. Interlocking pins which slide relatively are arranged on the supporting board, and the interlocking pins correspond to locking holes in the DS baffle and the ES baffle. The inner side, corresponding to the interlocking pins, of the supporting board is connected to a hinge pin and provided with a pair of driving levers, and one ends of the driving levers are matched with the driving pins. The driving pins link the driving levers to rotate through manual or electric operation, the interlocking pins act to be inserted into the locking holes in the DS baffle or the ES baffle to lock the DS baffle or the ES baffle through the driving levers. The manual interlocking device of the three-station mechanism can be automatically locked when manual operation reaches an expected position, and the interlocking function of manual operation of the three-station operating mechanism used in cooperation with a high-voltage isolation/grounding three-station switch is achieved.

The invention discloses a parking space lock, and aims to provide a triangular parking space lock which has a reasonable structure, is convenient to use and has a long service life; the parking space lock comprises a hollow tube, a key, a lock core, a bolt, a pull rod, a hook, a torsion spring, a lock bar, a hook seat, a base, a lower core shaft, a U-shaped cover and an upper core shaft; the base is fixedly arranged on the ground; the hollow tube is connected with the upper end of the U-shaped cover through the upper core shaft; the lower end of the U-shaped cover is connected with the left side of the base through the lower core shaft; the upper end of the hollow tube is provided with a hole for installing the lock core, and the lower end of the hollow tube is provided with a hole for installing a hook shaft and an open slot for the lock bar to enter; the lock core is fixedly arranged on the upper side in the hollow tube; the tail of the lock core is connected with the bolt; the upper end of the pull rod is connected with the bolt, and the lower end of the pull rod is connected with the hook; the hook is fixedly arranged on the hook seat; the hook seat is provided with a hole for the hook shaft to pass through; the hook shaft is provided with a groove; the hook seat is arranged on the hook shaft through a flat-head screw; and the right side of the base is provided with the lock bar. Because the lock core is arranged on the upper end of a triangle or in the U-shaped cover, the parking space lock is not easy to damage.

The invention provides a dual unipolar voltage module chain and a hybrid multilevel converter, and belongs to the fields of a power electronic technology and power transmission and distribution. The dual unipolar voltage module chain consists of N unipolar voltage modules which are connected in series in sequence, wherein the N unipolar voltage modules comprise N1 positive electrode unipolar voltage modules and N2 negative electrode unipolar voltage modules; when a bidirectional current passes through, bipolar voltage output capability is formed; the hybrid multilevel converter based on the module chain at least comprises two same phases, wherein each phase comprises a dual unipolar voltage module chain, a three-level bridge arm and an electric reactor, wherein one port of the dual unipolar voltage module chain is connected with the midpoint of the three-level bridge arm while the other port of the dual unipolar voltage module chain is connected with one end of the electric reactor; and the other end of the electric reactor is connected with an alternating current voltage. By adoption of the dual unipolar voltage module chain and the hybrid multilevel converter, wide-range alternating current-direct current conversion can be realized at a relatively low engineering cost and in a compact occupied space; and meanwhile, high conversion efficiency, good harmonic characteristic and direct current fault ride-through capability are achieved.

The invention relates to a rail vehicle having a sanitary system which has a waste water tank (1) and a fresh water tank (2) which are each equipped with associated filling level sensors (3), wherein a control device (4) is provided for establishing a link in terms of control between the filling levels in the fresh water tank (2) and waste water tank (1), which control device monitors the filling level in the waste water tank (1) by means of the associated sensors (3) and controls the filling level in the fresh water tank (2) as a function of a measured filling level in the waste water tank (1).

The invention relates to a lock system applied to a shared article and an unlocking and locking method thereof, belongs to the technical field of a shared article lock system, and solves the problem that in a conventional shared bicycle unlocking process, the user experience is poor since the user operation is complicated, a mobile phone is not carried or the mobile phone is out of battery, and the traffic of the mobile phone runs out. The lock system comprises a lock device and a server, the lock device generates an encryption lock code according to a user input information recognition resultand a code lock identification code stored in the lock device and transmits the encryption lock code to the server, the server decrypts the encryption lock code and obtains the user input informationrecognition result and the code lock identification code stored in the lock device, user personal information stored in the server is searched, whether the user state is normal is determined, storedcode lock state information is extracted, an unlocking instruction is transmitted to the lock device and charging is started when the user state is normal and the code lock is in a locking state, andthe lock device receives the unlocking instruction and performs an unlocking motion. The unlocking experience of users is effectively enhanced.

The invention discloses an adaptive adjusting device for transmitting power of an induction log tool. Configuration software or flash programming is not needed, and automatic adjustment is completelyrealized by a hardware circuit. According to the hardware circuit in the invention, the transmitting power is automatically calculated and adjusted according to a signal acquired by an AD (Analog/Digital) converter, the final signal received by the induction log tool is ensured to be always positioned in an optimum state, the received signal is not too large so as not to be saturated, the signal is not too small so as not to cause insufficient measurement accuracy, and finally the effects of reducing partial power consumption of the system, reducing the manual step-up error and improving the measurement accuracy and measurement efficiency are achieved. Meanwhile, since the design of a full hardware circuit is adopted, program software participation is not needed, and the reliability of thesystem is greatly improved. Furthermore, a hardware module can be separately designed to be arranged in an instrument system, and the device is flexible to debug and convenient to detach.

The invention discloses a mining intrinsically safe closed-end amplified phone circuit device, which comprises an 18V intrinsically safe power module, a charging control circuit, a voice amplifier, a dotting output module, a front-end voice amplification module and a signal switching processing module, wherein the 18V intrinsically safe power module is connected with the charging control circuit through a connecting terminal; the charging control circuit is connected with the voice amplifier, the dotting output module, the front-end voice amplification module and the signal switching processing module respectively; the voice signal output end of the signal switching processing module is connected with the voice amplifier which is connected with a loudspeaker; and the signal switching processing module is connected with a dotting device through a dotting button and a transmitter button. The device can be used for voice communication, can stop and lock equipment such as a motor when used together with various electrical control devices to ensure the safety of personnel and the equipment, and also can control external equipment.

The invention discloses a safety protection system for a transformer substation. The safety protection system comprises a temperature sensor, an oxygen content sensor, an SF6 sensor, a smoke sensor, acontrol unit, a fan and a safety protection door lock; the safety protection door lock comprises an alarm indicating lamp, an intermediate relay ZJ, a locking electromagnet DSN, a bipolar power switch Q1, a door lock body, a fixed door handle, a key hole, a movable door handle, a movable door handle unlocking auxiliary contact JS and a movable door handle rotating disc; when a locking electromagnet DSN coil is powered off, the locking electromagnet DSN is released and locked to lock the door; and the circle center of the movable door handle rotating disc is fixedly connected with a rotating shaft of the movable door handle, the movable door handle rotating disc rotates along with the movable door handle, a movable door handle unlocking auxiliary contact JS is arranged at a missing part ofthe movable door handle rotating disc, and the movable door handle rotary table rotates along with the movable door handle to trigger the movable door handle unlocking auxiliary contact JS. Accordingto the safety protection system, locking and alarming functions of all room doors are realized, and outdoor workers are effectively prevented from entering rooms by mistake.

The invention relates to the technical field of door locks, and particularly relates to an intelligent double-control gourd shaped lock. The lock is characterized in that a handle is provided with a first mounting hole, wherein a lock core body is arranged in the first mounting hole, and one end of the lock core body can be used for inserting into a key and rotating along the axial direction through the key; a first transmission piece is arranged on the first mounting hole, wherein one end of the first transmission piece is connected with a first connecting structure through the lock core body; the first transmission piece is connected with the handle through a second connecting structure, wherein the first transmission piece synchronously rotates along the axial direction under the driving of the handle; a lock shell is coaxial with the first mounting hole and is provided with a second mounting hole, a second transmission piece is arranged on the second mounting hole and connected with a power device, and the second transmission piece can move along with the axial direction of the second mounting hole under the driving of the power device; an electric control device is connected with the power device, and can control the power device through receiving electric signals to drive second transmission piece to approach or keep away from the first transmission piece; a cam is connected with the second transmission piece, and can rotate under the driving of the second transmission piece. The invention has the advantages of simple and convenient unlocking and good reliability.

The invention relates to a pressure vessel valve which is simple in structure, better in security and reliability, capable of avoiding being opened by mistake, and suitable for automatic locking. The pressure vessel valve comprises a valve body, a valve rod, a locking rod and a hand wheel. The valve rod comprises a conical section and a cylindrical section. The valve body comprises a first cylindrical cavity, a conical cavity and a second cylindrical cavity. The diameter of the upper port of the conical cavity is smaller than that of the second cylindrical cavity. An annular platform is formed on the bottom portion of the second cylindrical cavity, and a locking groove is formed in the annular platform. A tube body of the lower middle section of the locking rod is arranged on the cylindrical section of the valve rod in a sleeved mode, and a pair of waist-shaped holes is formed in the upper middle portion of the tube body in the radial direction. A spring pin is arranged inside the pin hole of the locking rod and two ends of the spring pin stretch out the pair of waist-shaped holes. An annular boss is arranged on the bottom of the locking rod. An annular locking pin which is arranged on the tube body in a sleeved mode is arranged at the upper end of the annular boss. A pressing ring is arranged at the lower end of the spring pin. A spring is arranged between the pressing ring and the annular locking pin. A protrusion which is suitable for being matched with the locking groove is arranged on the lower end surface of the annular locking pin.

The invention provides hoisting equipment for a green building assembly type prefabricated wallboard, and relates to the technical field of hoisting devices, the hoisting equipment comprises a seat body, a connecting part, an auxiliary part and a hanging part; a connecting seat A is mounted on the seat body; two rotating seats A are welded to the bottom of the connecting seat A, and each rotating seat A is rotationally connected with a rolling wheel. Each sliding block is slidably connected with two sliding rods B, the tail ends of the two sliding rods B on the left side and the tail ends of the two sliding rods B on the right side are each in threaded connection with a connecting block, and the bottom end faces of the two connecting blocks are each provided with a hook in a welded mode. Each sliding rod B is sleeved with an elastic piece B, and the elastic pieces B form a buffering structure of the hook, so that stress fracture of the hook during hanging can be prevented, and the problems that firstly, automatic locking of the hook cannot be achieved, and safety is low are solved; and secondly, automatic adjustment of the steel wire rope cannot be achieved during hoisting, and automatic locking of the steel wire rope after adjustment is achieved.

The invention relates to a locking device (1) for a motor vehicle comprising actuating means (23), a lock (1) with a locking mechanism, comprising a rotary latch and at least one pawl, the actuating means (23) and the lock can be interconnected by means of a Bowden cable and the Bowden cable comprises means for actively blocking (8) a force transmitted by the Bowden cable (7, 7').

The invention relates to a pressure vessel valve which is simple in structure and fine in safety and reliability, can avoid opening by mistake, and is suitable for automatic locking. The pressure vessel valve comprises a valve body, a valve rod, a lock rod and a hand wheel. The valve rod comprises a conical section and a cylindrical section. The valve body comprises a first cylindrical cavity, a conical cavity and a second cylindrical cavity. The diameter of an upper port of the conical cavity is smaller than that of the second cylindrical cavity so as to form an annular platform at the bottom of the second cylindrical cavity, and a lockout groove is arranged on the annular platform. A middle lower section of a tube body of the lock rod is sleeved on a cylindrical section of the valve rod, and a pair of waist-shaped holes is radially arranged on a middle upper section of the tube body. A spring pin is arranged in a pin hole of the lock rod, and the pair of waist-shaped holes extends from two ends of the spring pin. An annular boss is arranged at the bottom of the lock rod, an annular lock pin sleeved on the tube body is arranged at the upper end of the annular boss, a pressure ring is arranged at the lower end of the spring pin, and a spring is arranged between the pressure ring and the annular lock pin. A protrusion suitable for being matched with the lockout groove is arranged on a lower end face of the annular lock pin.

The invention provides a pump body installation mechanism special for a vertical dust collector. The pump body installation mechanism comprises an installation seat which is of a rectangular frame-shaped structure, and a fixed clamping block is welded to the inner side of the installation seat; and a plug pin block is welded to the top end surface of the fixing clamping block. By arranging a threaded transmission rod, a thread of the threaded transmission rod is adjustable, thus, the assembling speed and the disassembling speed of a pump body can be increased, in addition, through cooperationof a check ring, a rectangular limiting block, a locking head, a spring and a locking seat, locking of the threaded transmission rod can be achieved, and loosening of the threaded transmission rod isprevented. Compared with an existing device, the pump body installation mechanism can increase the assembling speed and the disassembling speed; a self-locking structure is arranged on the pump body installation mechanism, and the firmness and stability are high; and by arranging the fixed clamping block and a moving clamping block, clamping grooves of the fixed clamping block and the moving clamping block are of V-shaped structures, thus, in the using process, the two clamping grooves of the V-shaped structures can be suitable for clamping and fixing of pump bodies different in specificationand size. Compared with the existing device, the pump body installation mechanism is higher in flexibility and practicality.