Abstract: A floating board-to-board connector includes a male header and a female header. The female header includes a female header body and a plug-in member, the plug-in member is connected with the female header body, and the plug-in member is disposed through the female header body; the male header includes a male header body and a pin, the male header body is provided with a mounting cavity, the pin is connected in the mounting cavity, the mounting cavity is used for mounting the female header body, and the plug-in member is provided with a plug-in hole into which the pin is inserted; and a cavity wall of the mounting cavity is provided with a clamping groove, the female header further includes a clamping member, the clamping member is convexly arranged on the female header body, and the clamping groove is used for mounting the clamping member.

Abstract: Provided is an arc-shaped lock and display screen assembly, the arc-shaped lock comprises a first lock body and a second lock body; the first lock body comprises an angle adjusting component, a disengagement set, a locking set and a locking piece, the angle adjusting component is used for adjusting a splicing angle, the angle adjusting component is internally provided with a cavity for accommodating the disengagement set, the locking set is provided in the disengagement set, and the locking piece is arranged on outer wall of the locking set; the second lock body comprises a lock bar, which is provided with a slot, the disengagement set moves relative to the locking set, so that the locking piece moves toward the lock bar under extrusion force of the disengagement set, and is locked in the slot to realize temporary fixation of the first lock body and the second lock body.

Abstract: Provided are a box frame and an LED display. The box frame comprises a frame border for installing an LED module, the frame border comprises a plurality of connecting seats and a plurality of frames, each connecting seat connects two adjacent frames, the connecting seat and the frame are alternately connected to form a closed structure; and the frame comprises an inner plate, an outer plate, a partition, a first reinforcing structure and a second reinforcing structure, the inner plate and the outer plate are arranged at intervals, the partition is connected between the inner plate and the outer plate, so as to divide space between the inner plate and the outer plate into a first groove and a second groove, the first reinforcing structure is arranged in the first groove and the second reinforcing structure is arranged in the second groove.

Abstract: An illuminated floor tile, includes a rear body, an LED lamp panel disposed on the rear body, and a glass cover provided over the LED lamp panel and secured to the rear body by an adhesive layer. The LED lamp panel includes a plurality of lamp beads fixedly arranged on a PCB board. The rear body includes a plurality of supports extending from a bottom hosing and through an opening of the PCB, such that a top surface of the supports is higher than the lamp beads and supports the glass.

Abstract: In order to overcome the problems that the existing arc-shaped lock has a complex structure and is difficult to accurately adjust angles, the application provides an arc-shaped lock, comprising an angle control mechanism and a locking mechanism; the angle control mechanism comprises a first mounting structure and a first sliding mechanism, a second sliding mechanism and a positioning mechanism, and the first mounting structure is used for installing a display module; the locking mechanism comprises a second mounting structure, and the second mounting structure is used for installing another display module; the first sliding mechanism and the second sliding mechanism telescopically extend out of the first mounting structure and abut against the second mounting structure, the positioning mechanism is used for positioning lengths of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure; and the first sliding mechanism and second sliding mechanism are positione

Abstract: The present invention discloses a pneumatic-controlled pitch-adjustable telescopic mechanism used for a robotic arm, which belongs to the technical field of robotic arm pneumatic control movement, comprising a sliding block, a fixed block and a driving device, the fixed block is in a fixed position; the sliding block slides relative to the fixed block according to a predetermined movement track, which is used to adjust the distance between the sliding block and the fixed block; the driving device is used to provide power to drive; a sliding bar is disposed between the driving device and the sliding block, one end of the sliding bar is fixedly connected to the driving device, and the other end is slidingly connected to the sliding block, which is used to drive the sliding block to slide; the fixed block is provided with a fixed base and a guide mechanism, the fixed base is used to restrict the sliding bar from moving in a direction non-parallel to the predetermined movement track; the guide mechanism is used t

Abstract: In order to overcome the problems that the existing arc-shaped lock has a complex structure and is difficult to accurately adjust angles, the application provides an arc-shaped lock, comprising an angle control mechanism and a locking mechanism; the angle control mechanism comprises a first mounting structure and a first sliding mechanism, a second sliding mechanism and a positioning mechanism, and the first mounting structure is used for installing a display module; the locking mechanism comprises a second mounting structure, and the second mounting structure is used for installing another display module; the first sliding mechanism and the second sliding mechanism telescopically extend out of the first mounting structure and abut against the second mounting structure, the positioning mechanism is used for positioning lengths of the first sliding mechanism and the second sliding mechanism extending out of the first mounting structure; and the first sliding mechanism and second sliding mechanism are positione

Abstract: Provided is an arc-shaped lock and display screen assembly, the arc-shaped lock comprises a first lock body and a second lock body; the first lock body comprises an angle adjusting component, a disengagement set, a locking set and a locking piece, the angle adjusting component is used for adjusting a splicing angle, the angle adjusting component is internally provided with a cavity for accommodating the disengagement set, the locking set is provided in the disengagement set, and the locking piece is arranged on outer wall of the locking set; the second lock body comprises a lock bar, which is provided with a slot, the disengagement set moves relative to the locking set, so that the locking piece moves toward the lock bar under extrusion force of the disengagement set, and is locked in the slot to realize temporary fixation of the first lock body and the second lock body.

Abstract: The application belongs to the technical field of LED display screens, and particularly relates to an outdoor LED display. The Outdoor LED display comprises a box body, a display module and a plurality of control assemblies; the display module comprises a plurality of sub-modules, and each sub-module is provided with a control assembly; the box body comprises a frame and a panel installed on the frame, and the display module is connected at one end of the frame away from the panel; the panel, the frame, and the display module form an installation space for installing the control assembly. In this application, each sub-module is installed with a corresponding control assembly, and the control assembly can control the corresponding sub-module to display, thereby enhancing the display effect of the outdoor LED display.

Abstract: The application provides an LED display screen box, comprising a box frame, an LED module and a sheet metal door panel; the LED module comprises a mounting plate, an LED lamp panel and a power box, the LED module is fixed on the front of the box frame by a module side lock; the power box of LED module includes a socket and a protective cover. The LED module can be removed from the front of the box frame, so that the connection stability is ensured and the disassembly can be performed from the front. The LED display screen box can be repaired or changed efficiently and quickly, so the problem that the LED display screen box is difficult to maintain is solved. The protective cover on the power box of LED module can improve the waterproof performance of the power box, its waterproof grade can reach IP65.

Abstract: Provided is a locking device, comprising a first lock body and a second lock body; the first lock body comprises an angle rotating disc base (11), an angle rotating disc (12) and a lock plate (13), the angle rotating disc (12) can rotate around its own axis and the angle rotating disc base (11) has a first mounting surface; the second lock body comprises a fixed base (21) and a spring lock (22), the fixed base (21) is provided with a second mounting surface, and a limit surface facing one end face of the angle rotating disc (12); one end face of the angle rotating disc (12) facing the limit surface is provided with a plurality of bevels (121) at intervals along circumferential direction; rotating the angle rotating disc (12) can make the limit surface fit with different bevels (121) to adjust the included angle.

Abstract: An underneath type railway freight car bogie wheelset radial device has front and rear subframes and two cross-arranged connecting rods that are pinned by round pin connectors. The subframe is a combination structure of the adapter and the lateral arm. The connecting rods are arranged under the bolster to form the underneath bogie wheelset radial structure. The height of the central plane of the connecting rod is lower than the height of the central plane of the subframe adapter surface. The adapter has an adapter surface forming an arc-shaped adapter structure and an adapter connecting arm integrated with the adapter surface structure and vertically arranged at one end of the adapter surface; the subframes are fixed to the adapter by the rivet assembly.

Abstract: The present invention belongs to the technical field of preparing isocyanate derivatives, and particularly relates to a storage-stable polyisocyanate composition and a preparation method therefor. The method comprises: in the presence of a catalyst system, subjecting an isocyanate monomer to a polymerization reaction; terminating the reaction after a suitable conversion rate is reached, so as to obtain a polyisocyanate reaction solution; and then performing heat treatment on the obtained polyisocyanate reaction solution to obtain a heat-treated polyisocyanate mixture, wherein the heat treatment temperature is 10-30° C. higher than the heat-sensitive temperature of the obtained polyisocyanate product, and the heat treatment time is 5-30 min; and then performing separation treatment on the heat-treated polyisocyanate mixture. When the polyisocyanate composition of the present invention is stored at 50° C.

Abstract: In a thread management method, an application first information to an operating system through an API. The first information is used to indicate at least one first task to be executed by the application. The operating system allocates, by using the first information, the at least one first task to be executed by the application to a corresponding first task queue, and allocates a thread to the first task queue based on a current load level of the operating system and a type of the first task queue.

Abstract: The present invention discloses a pneumatic-controlled pitch-adjustable telescopic mechanism used for a robotic arm, which belongs to the technical field of robotic arm pneumatic control movement, comprising a sliding block, a fixed block and a driving device, the fixed block is in a fixed position; the sliding block slides relative to the fixed block according to a predetermined movement track, which is used to adjust the distance between the sliding block and the fixed block; the driving device is used to provide power to drive; a sliding bar is disposed between the driving device and the sliding block, one end of the sliding bar is fixedly connected to the driving device, and the other end is slidingly connected to the sliding block, which is used to drive the sliding block to slide; the fixed block is provided with a fixed base and a guide mechanism, the fixed base is used to restrict the sliding bar from moving in a direction non-parallel to the predetermined movement track; the guide mechanism is used t

Abstract: A railway self-generating express freight car bogie has a wheel-axle assembly, frame, journal box suspension device, bolster, foundation brake, side bearing, empty/load auto-adjustment equipment, central suspension device, longitudinal traction device, vertical damper and lateral damper. An axle-end generator is connected at the outer end of an axle of the wheel-axle assembly, the rotor part of the axle-end generator is connected to the end bearing of the wheel-axle assembly by the axle-end bolts, and the stator part is connected to the mount of the journal box suspension devices. The bogie is designed according to the zero-wear concept, and a large number of rubber components and hydraulic dampers are used to improve the lateral stability, linear stability and curve passing performance of the car, so that the bogie is highly adaptable to railway lines, and can meet the operating requirements within 160 km/h and reduce the workload of bogie operation and maintenance.

Abstract: A pin-type connection apparatus includes a first connecting seat, a second connecting seat, a connecting shaft, and a locking component, wherein a receiving hole and a locking hole on the adjacent side of the receiving hole are disposed on the second connecting seat, one end of the connecting shaft is fastened to the first connecting seat, a clamping hole is disposed at the other end of the connecting shaft, the connecting shaft can extend into the receiving hole, a first clamping protrusion is disposed in the clamping hole, a second clamping protrusion is disposed at one end of the locking component, and the locking component can pass through the locking hole and extend into the clamping hole; and when the locking component is rotated to a lockout position, the first clamping protrusion can abut against the second clamping protrusion and restrain the second clamping protrusion from exiting the clamping hole.

Abstract: The application provides an LED display screen box, comprising a box frame, an LED module and a sheet metal door panel; the LED module comprises a mounting plate, an LED lamp panel and a power box, the LED module is fixed on the front of the box frame by a module side lock; the power box of LED module includes a socket and a protective cover. The LED module can be removed from the front of the box frame, so that the connection stability is ensured and the disassembly can be performed from the front. The LED display screen box can be repaired or changed efficiently and quickly, so the problem that the LED display screen box is difficult to maintain is solved. The protective cover on the power box of LED module can improve the waterproof performance of the power box, its waterproof grade can reach IP65.