47results about How to "Convenient and effective adjustment" patented technology

An instrument for spinal rotation that aligns and holds direct vertebral rotation (DVR) lever arms relative to each other to achieve an initial axial alignment of a segment of vertebrae and allows the final DVR rotation by rotating the instrument and lever arms together. A method of direct vertebral rotation that allows rotating the vertebrae to be aligned relative to each other, and collectively rotating the vertebrae to be aligned relative to adjacent spinal segments by rotating the direct vertebral rotation instrument. A system for direct vertebral rotation having at least two pedicle screws. The system also includes at least two levers attachable to the pedicle screws and a clamping instrument configured to clamp the levers.

A clamp device including a detection mechanism provided to detect whether the clamp device is in a clamped state or an unclamped state. The detection mechanism includes a tilt plate tiltably placed inside a switch holder installed on a body and a sliding rod displaced together with a piston rod and displaced in the direction normal to the tilt plate. When the sliding rod presses and tilts the tilt plate while a piston is displaced, a second detection switch detects that the clamp device is in the unclamped state.

The invention relates to a high-speed train gearbox no-load running-in test bench, which is composed of a driving device, axle end transition bearing positioning clamping devices, a large-span mobile wheel set axle positioning supporting device, a gearbox input end pressing vertical column device and a noise testing device, wherein the driving device is arranged at the left end of a test bench base (1); a fixing-end and a mobile-end transition bearing positioning clamping devices are arranged at the left side and the right side of the test bench base (1) respectively; the large-span mobile wheel set axle positioning supporting device is composed of two sets of large-span mobile wheel set axle positioning supporting devices with the same structure; the gearbox input end pressing vertical column device is arranged on the test bench base (1); and the noise testing device comprises noise testing sound level meters and supporting tube assemblies arranged at the input end and the output end of the gearbox respectively. A series of technical problems that the existing gearbox no-load running-in test bench is complicated to assemble and disassemble, an axle journal is damaged, a high rotation speed can not be met and the like can be solved.

The invention discloses a holder device for automobile fixtures. The holder device includes a base. Two support columns are fixedly installed on the top side of the base. Two holder bodies are arranged between the two support columns. Two slide rails are fixedly installed on the top side of the base. The two holder bodies are respectively installed on the two slide rails in a sliding manner. Cylinders are fixedly installed on the sides, close to each other, of the two support columns. The output shafts of the two cylinders are fixedly installed on the sides, away from each other, of the two holder bodies. A connecting rod fixedly installed on the top side of the base is arranged between the two slide rails. A sliding groove is arranged in the top end of the connecting rod. A sliding rod isinstalled in a sliding manner in the sliding groove. The top end of the sliding rod extends to the outside of the sliding groove. A placing slot is arranged in one side of the sliding rod. The holderdevice can effectively clamp an automobile part, and has an effective buffer effect in the clamping process. Moreover, the height position of an automobile part can be effectively adjusted.

The invention belongs to the technical field of ceramic materials, and in particular relates to a method for preparing a large-aperture three-dimensional network SiC ceramic material. The present invention is to mix SiC powder and B4C powder, add ammonia water, sugar, acrylamide, N, N-methylenebisacrylamide and water ball mill and mix evenly to form SiC mixed slurry, and add surface activity to SiC mixed slurry Agent, foaming agent hydrogen peroxide and binder, stir well and add initiator gel to foam to obtain foam gel, under the protection of inert atmosphere, heat-preserve and sinter the foam gel at 1950-2040°C for 0.5-1h to obtain Large-aperture three-dimensional network SiC ceramic material. The invention can prepare macroporous three-dimensional network silicon carbide. By controlling the concentration and addition amount of polyvinyl alcohol, the pore size can be controlled. At the same time, the addition amount of hydrogen peroxide aqueous solution can control the porosity and pore size, and the use of surfactant is effective. Improving the connectivity of large pores is simple, reliable, does not require large fixed investment, and has good application prospects.

The invention relates to a novel audio and video support. The novel audio and video support comprises a base and traveling wheels, and an outer ring and an inner ring of a first bearing are connected with the base and a sleeve correspondingly. The inner wall of the sleeve is provided with an inner thread. A support rod is provided with an outer thread. The top end of the support rod is connected with an inner ring of a second bearing. An outer ring of the second bearing is connected with a top plate. The lower portion of the sleeve is sleeved with an annular gear. The base is provided with a motor and a driving gear. The upper portion of the support rod is sleeved with a sliding block provided with a sliding block through hole. A guide rod is inserted in the sliding block through hole in an embedded mode. The bottom end of the guide rod is connected with the base. The top end of the guide rod is connected with a stop block. A left side plate and a right side plate are arranged on the left and the right of the top plate correspondingly. A plurality of left telescopic rods are distributed between the left side plate and the top plate evenly, and a plurality of right telescopic rods are distributed between the top plate and the right side plate evenly. Through the adoption of the structure, according to the novel audio and video support, movement and height adjustment can be conducted more conveniently and effectively, placement space can also be extended flexibly, and thus the usage performance is greatly promoted.

The invention discloses a static protective structure. The structure comprises an N trap and a P trap, wherein a first P+ diffusion zone, a second P+ diffusion zone, a first N+ diffusion zone and a second N+ diffusion zone are formed in the N trap; the first P+ diffusion zone and the second P+ diffusion zone form a PMOS (P-channel metal oxide semiconductor) tube; one of the two P+ diffusion zones and one of the two N+ diffusion zones in the N+ trap are in short connection with the grid electrode of the PMOS tube for connecting a static end; a third P+ diffusion zone, a fourth P+ diffusion zone, a third N+ diffusion zone and a fourth N+ diffusion zone are formed in the P trap, and an NMOS (N-channel metal oxide semiconductor) tube is formed by the third N+ diffusion zone and the fourth N+ diffusion zone; one of the two N+ diffusion zones and one of the two P+ diffusion zone in the P trap are in short circuit with the NMOS tube for connecting a ground end; the other N+ diffusion zone in the N trap and the other N+ diffusion zone in the P trap are in short connection; and the other P+ diffusion zone in the N trap and the other P+ diffusion zone in the P trap are in short connection. According to the static protective structure, the trigger voltage of electrostatic protection can be regulated conveniently and effectively, the latch effect can be effectively avoided, and the static discharge capability is strong.

The invention discloses an improvement method an interface circuit of a blower controller real-time testing system. The method includes the steps that an input circuit of a GTDI (digital quantity input) card of an RTDS (real time digital simulator) is improved, a resister pack R is connected between an external power supply and a diode in series, and then the voltage of the external power supply is matched with the voltage of the output level of a tested blower controller; simulation / digital input / output cards of the RTDS are integrated into a single switch cabinet, and the external power supply mode of the working voltage of the input / output cards and the external power supply mode of the voltage of the external power supply are unified by adjusting the voltage of the external power supply of the GTDI card. According to the method, after the input circuit of the GTDI card of the RTDS is improved, the interface circuit can be conveniently and effectively adjusted according to the voltage of the output level of the tested device; the design of the switch cabinet is adopted, testing wiring operation is greatly simplified, intermediate links are reduced to the maximum degree, attenuation in the cable transmission process is reduced, and testing accuracy and error correcting capability are improved.