Chung, Hoi Kan

Provided in the present disclosure are a multi-purpose screw telescopic transmission mechanism with a motor and a magnetic encoder, and a bracket thereof. The screw telescopic transmission mechanism includes a main machine and a rotating bracket; the main machine is mounted on the rotating bracket and is configured to drive an external part to move back and forth, and the rotating bracket is configured to support the main machine and adjust an angle of the main machine; a rotating shaft of a first motor is connected to one end of a lead screw through a coupling. The multi-purpose screw telescopic transmission mechanism with the motor and the magnetic encoder, and the bracket thereof provided by the present disclosure are efficient, reliable, safe and easy to use, provide users with a better product experience, reduce the manufacturing costs for enterprises, and improve the market competitiveness.

The present invention relates to the technical field of testing of structural components or devices, and in particular to a method and an apparatus for measuring vehicle braking attitude change, and an electronic device. The method includes: generating a corresponding test task based on at least one preset measurement target under an autonomous emergency braking, AEB, braking working condition; determining whether a current test site meets a preset test condition based on the test task; and if the current test site meets the preset test condition, controlling at least one test vehicle meeting a preset measurement condition by an AEB braking robot in response to the test task to complete the at least one preset measurement target, and acquiring multiple groups of measurement data of the test vehicle in the test process, thereby obtaining a braking attitude change value of each test vehicle based on the multiple groups of measurement data and test data of the test vehicle. Therefore, the technical problem in the related art that the influence of AEB intervention on the vehicle attitude change is ignored to result in inadequate comprehensiveness of vehicle safety development and challenges in ensuring the safety performance of the vehicle during braking is solved.

The utility model belongs to the technical field of steam generators, and specifically relates to a heating device for a steam generator. The heating device comprises a first heater and a second heater connected to the first heater. A first electric heating tube is disposed inside the first heater. A first water outlet is provided on an upper end or a lower end of the first heater. A second electric heating tube is disposed inside the second heater. A water inlet of the second electric heating tube is arranged to be in communication with the first water outlet. A mounting hole for installing a temperature sensor is provided on a bottom portion of the first heater. Through the design of the two heaters, the utility model enables simultaneous heating of water inside the heaters via the two electric heating tubes, thereby increasing the heating speed, rapidly generating steam, reducing energy consumption, and significantly improving efficiency.

Disclosed are a multifocal point-ring spot generation system and a laser welding method in the technical field of laser processing. The system includes an annular light source, a first collimating lens, an annular beam generation module, and a first reflector arranged sequentially at intervals along a first straight-line direction, and a point light source, a second collimating lens, a first focusing lens, a multi-curvature hollow reflector, and a second focusing lens arranged sequentially at intervals along a second straight-line direction, where the multi-curvature hollow reflector and the second focusing lens are each provided with a through hole at their centers for allowing a beam emitted by the point light source to pass therethrough, and the multi-curvature hollow reflector has an adjustable mirror surface curvature. The system can solve the technical problems of high processing cost and poor stability in deep welding caused by structural constraints of point-ring lasers in the prior art.

The present invention relates to the technical field of electronic cigarette cartridge authentication, in particular to an anti-counterfeiting authentication system for an electronic cigarette cartridge based on an encryption technology, which includes an authentication parameter capturing module, a cigarette rod data transmission module, a contact connection verification module and a key activation control module. According to the present invention, through dynamic data extraction and grouping processing of an identification code and an encryption key, the security and uniqueness of identification information are improved, the circulation risk of counterfeit products is avoided, associated values of the combination of dynamic authentication identifiers and the identification code is calculated and stored, the dynamic update and traceability of authentication data are achieved, and the reliability and tamper resistance of parameters are enhanced; a unibus protocol is used to realize efficient transmission and real-time comparison of dynamic data, improve the accuracy and rapidity of comparison.

The present disclosure discloses a combined type sealing ring of a hub bearing and a machining method thereof. The sealing ring comprises a first skeleton, a second skeleton, and a third skeleton, the first skeleton comprises a first connecting portion and a first sealing portion disposed horizontally, the first sealing portion is provided with a sealing lip, the second skeleton comprises a second connecting portion and a second sealing portion extending toward an outer diameter surface of a transmission shaft, the third skeleton comprises a third connecting portion and a third sealing portion, one end of the third connecting portion is fixedly connected to the third sealing portion, the other end of the third connecting portion and an end of the second connecting portion are welded, and a clearance groove is formed between the third sealing portion and the first sealing portion; cold welding is adopted in a welding process to weld connecting positions of the second connecting portion and the third connecting portion, a welder current is set to 3-50 A, a pulse interval is 20-50 ms, and a welding speed is 300-800 mm/min; and a temperature at a welding position is controlled at 50-100°C for 30 min after completion of welding. It is simple in structure and controllable in amount of deformation, ensures stable operations of the structure, and has a good using effect.

The utility model belongs to the technical field of steam products and specifically relates to a steam generation device. The device comprises a main body. A first heating component and a second heating component are respectively disposed inside the main body. An energy storage heating zone is disposed inside the first heating component. A first temperature controller is installed inside the first heating component. A water injection port in communication with the energy storage heating zone is provided on the first heating component. A vaporization heating zone is disposed inside the second heating component. A spiral heating pipe is disposed inside the vaporization heating zone. A steam outlet of the second heating component is connected to a steam outlet head in communication with the vaporization heating zone. A gas-liquid channel is arranged to be in communication between the energy storage heating zone and the vaporization heating zone.

The present invention discloses a golf practice net. Said golf practice net comprises a support rod and a support frame. The support frame includes a mounting base, several first links, several second links, and a net. The mounting base is slidably mounted at one end of the support rod. The first links are rotatably mounted on the periphery of the mounting base. The second links are movably mounted on the support rod. The first links and the second links are movably connected to form a telescopic support structure, whereby the support frame has a first unfolded state, a second unfolded state, and a stowed state. The technical solution of the golf practice net of the present invention can enhance practicability.

A blowing-suction machine and a method for using a blowing-suction machine for cleaning. The blowing-suction machine includes a blowing-suction machine body (1), and the blowing-suction machine body includes a handheld handle (2) and an air blowing-suction machine component (3). An end portion of the handheld handle (2) is provided with a connecting assembly connected to the air blowing-suction machine component (3), and the air blowing-suction machine component (3) includes an air blowing-suction head assembly and a rotating bracket (31). A ball block (311) and a fixing rack (312) are disposed in the rotating bracket (31), and the ball block (311) is internally provided with a plurality of clamping slots (3111).

A charging complete device for a hollow sphere is provided. The hollow sphere is internally provided with a bladder accommodating gas, and the device includes a gas nozzle configured for charging and a charger. The gas nozzle includes a rubber cushion, a gas nozzle channel, a positive spring plate, and a negative spring plate, the gas nozzle channel is fixed to the rubber cushion, and an outlet of the gas nozzle channel is located in the bladder. The positive spring plate and the negative spring plate are located on an inner side of the gas nozzle channel in sequence. The charger includes a needle-shaped charging head, and a length of the needle-shaped charging head is at least two centimeters. The present invention has the following advantages: 1. simplifying manufacturing. 2. improving use convenience. 3. improving an appearance. 4. guaranteeing performance and ensuring overall sealing and durability of the hollow sphere.