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: A chip slot is disclosed, which includes a slot, where a plurality of terminal groups are disposed in the slot, terminals in each terminal group include metal sheets that are symmetrically disposed on two opposite inner side walls of the slot, and each metal sheet has a bending pin that extends outside the slot; bending directions of bending pins on the terminals in each terminal group are same; and for any row of metal sheets in any two adjacent terminal groups, along an arrangement direction of the row of metal sheets, bending pins of the metal sheets in the adjacent terminal groups are alternately arranged on both sides of the row of metal sheets. The bending pins of the row of metal sheets are bent toward two different directions.

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.

Abstract: Provided is a control device for floor tile screen, which comprises a sensor chip, switch module, signal processing module and light panel control module connected; wherein a plurality of sensor chips are arranged, and the plurality of sensor chips are arranged on each light panel, the light panel control module is connected with the light panel; the sensor chip is used for generating a contact signal; the switch module is used for switching the contact signal received by each sensor chip; the signal processing module is used for receiving, buffering and identifying the contact signal so as to generate an aggregated signal containing position and contact state of each sensor chip; the light panel control module is used for controlling each light panel to display visuals; and a light panel control circuit is formed by the plurality of sensor chips, switch module, signal processing module and light panel control module.

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: 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: The application provides a floor tile screen, comprising a box body (1), a rear body (2), a PCB board (3) and a front body (4), wherein the rear body (2) is fixed on the box body (1); the PCB (3) is arranged between the rear body (2) and the front body (4), and provided with lamp beads; a plurality of transparent fixing columns (41) are fixedly arranged on the front body (4), pass through the PCB board (3), fixedly connected with the rear body (2), and avoid the lamp beads. The fixing column (41) has the function of limiting the front body (4), the front body (4) and the rear body (2) are connected together by fixing columns (41), to avoid separation; the fixing columns (41) are transparent, so that the light emitted by the lamp beads is not blocked, the display effect of the floor tile screen is improved.

Abstract: Provided is an anti-collision device for LED screen, comprising a box body (1), a telescopic rotating mechanism, an anti-collision sheet (4) and a display module (2); the peripheral side of the box body (1) is provided with a mounting hole (12) and a receiving groove (11); the telescopic rotating mechanism is embedded in the mounting hole (12) and movably connected with the box body (1); the anti-collision sheet (4) is fixedly connected with the telescopic rotating mechanism. When the telescopic rotating mechanism is not subjected to external force, the telescopic rotating mechanism enables the anti-collision sheet (4) to shield the peripheral side of the display module (2) outside the receiving groove (11); when the telescopic rotating mechanism is subjected to external force, the telescopic rotating mechanism drives the anti-collision sheet (4) to retract and rotate to be embedded in the receiving groove (11).

Abstract: Provided is an LED floor tile screen, comprises a rear body, an LED lamp panel fixedly arranged on the rear body, a glass (4) covering the LED lamp panel and an adhesive layer (3) for bonding and sealing glass (4) and rear body; the LED lamp panel comprises a PCB board (21) and a plurality of lamp beads (22) fixedly arranged on PCB board (21); the rear body comprises a bottom housing and a plurality of supports (11) fixedly arranged in the bottom hosing; and the support (11) is used to support glass (4); the LED lamp panel is fixedly arranged in the bottom housing; a top surface of support (11) is higher than that of lamp bead (22). Support (11) supports glass (4) and can transmit the pressure on glass (4) to the rear body, thus preventing glass (4) from crushing lamp bead (22) and protecting lamp bead (22).

Abstract: Provided is a corner protection device, comprising a slide rail shaft, a corner protection and detent mechanism, and a corner protector. The slide rail shaft is fixed on the LED display screen cabinet, the corner protection and detent mechanism is fixed on the sidewall at the top of the cabinet, and the corner protector is slidably disposed on the slide rail shaft. When the corner protector slides to the top of the cabinet, the corner protection and detent mechanism can fix the corner protector on the top of the cabinet so as to protect it. Also provided is an LED display screen cabinet, comprising the corner protection device mentioned above, and a support piece arranged on the sidewall of the cabinet. When the corner protector is fixed on the top of the cabinet, the support piece and corner protector can jointly support the display screen cabinet on the support platform.

Abstract: The application belongs to the technical field of LED display screen box assembly, and relates to a tension lock and LED display screen box. The tension lock comprises a base, a rotating shaft, a shim and a knob, wherein the base is provided with a sliding hole, one end of the rotating shaft is fixedly connected with the knob, the other end of the rotating shaft is inserted into the sliding hole, the shim is rotationally connected with the rotating shaft, and the distance between the shim and the knob is kept constant; Turning the knob can make the rotating shaft rotate and slide along the axial direction of the sliding hole to make the shim move away from or close to the base. The tension lock can effectively improve the installation efficiency of LED display screen box.