8results about How to "Prevent pressure" patented technology

The utility model discloses a back spray piece and back spray assembly, back spray piece includes the body, switching part and first reset part. The body is equipped with the water inlet hole and is suitable for with the water outlet hole of water inlet hole intercommunication, and the back spray water hole is suitable for along the first direction parallel to the horizontal plane and / or the direction of inclination to the first direction and washes to the back plate of human body, switching part is suitable for the movement between the first position and second position, and switching part is in the first position, makes water inlet hole and back spray water hole intercommunication, in the second position, makes water inlet hole and back spray water hole not intercommunication, thereby realizes the switching of waterway. The both ends of first reset part act on the body and switching part respectively, and are suitable for energy storage when switching part moves to the first position, and release energy to drive switching part to reset to the second position when back spray water hole does not water, prevent the next time opening, and back spray water hole directly water, lead to the splash problem of opening, and simultaneously, it can also assist switching part to switch to the second position, and it is more labor-saving when switching.

The utility model discloses a driving device for a rail robot, which comprises a mounting frame, guide wheels and a bearing wheel are arranged at the upper end of the mounting frame, the guide wheels are positioned on two sides of the bearing wheel, the guide wheels and the bearing wheel are positioned on a T-shaped rail, a driving motor is mounted on the side surface of the mounting frame, a power output end of the driving motor is connected with a driving wheel, and a power output end of the driving motor is connected with a driving motor. The driving wheel is located on the lower surface of the T-shaped rail, and a spring adjusting mechanism is further arranged on the side face of the mounting frame and used for adjusting the pressing force between the driving wheel and the T-shaped rail. The utility model has the beneficial effects that: a worker adjusts the compression amount of the spring by adjusting the spring adjusting mechanism so as to adjust the pressing force of the T-shaped track, when the driving motor drives the driving wheel to pass through an obstacle on the T-shaped track, the spring as a suspension of the driving wheel is compressed, and when passing through the obstacle, the spring resets, so that the driving wheel can be driven to rotate. Therefore, the driving wheel moves up and down, and consequences caused by too large or too small pressing force are avoided.

This utility model relates to the field of bridge engineering construction technology and discloses a bridge pile grouting device for bridge construction, including a bridge pile grouting device body. A sealing disc is movably connected to the bottom of the bridge pile grouting device body, and several fixing blocks are fixedly connected to the outside of the bridge pile grouting device body. A ring is fixedly connected to one side of the fixing blocks, a mud-shoveling block is slidably connected to one side of the ring, and a support plate is fixedly connected to one side of the mud-shoveling block. Before the cement is poured, the mud-shoveling block slides on the surface of the ring, which can drive the support plate to move. At the same time, by adjusting the bolt and the threaded connection inside one end of the support plate, the limiting disc can be moved towards one end of the hollow tube, thereby facilitating the clamping and fixing of the hollow tube. This avoids the worker holding the hollow tube for a long time and pressing against the sealing disc, thus bringing convenience to the worker's operation.

The invention relates to the technical field of aerospace equipment, in particular to a propellant adjusting device which comprises a main shell, an adjusting part and a driving part, the main shell is provided with a working cavity, an inlet and an outlet, the inlet and the outlet are communicated with the working cavity, the inlet and the outlet are communicated through a communicating cavity, and the main shell is provided with a sliding part in the working cavity; the adjusting part comprises an adjusting head and a penetrating rod which are connected with each other, the penetrating rod penetrates through the sliding part in a sliding mode, the penetrating rod can slide relative to the sliding part and adjust the opening degree of the communicating cavity, a first movable sealing part and a second movable sealing part are arranged between the penetrating rod and the sliding part, and the first movable sealing part and the second movable sealing part are arranged in the sliding direction of the penetrating rod in a spaced mode; a discharging cavity is formed between the penetrating rod and the sliding part and located between the first movable sealing piece and the second movable sealing piece, the sliding part is provided with a discharging hole communicating with the discharging cavity, and the driving piece is used for driving the penetrating rod to slide. According to the propellant adjusting device provided by the invention, the sealing performance between the main shell and the adjusting part is further improved, and reliable supply of the propellant is ensured.

The utility model belongs to the technical field of shoe soles, and particularly relates to an air cushion shoe sole with a flowing air chamber, which comprises a midsole and an outsole, a plurality of matching holes are arranged at the bottom of the midsole, a plurality of U-shaped grooves are arranged among the matching holes, and anti-skidding bumps and air cushion bumps are arranged at the bottom of the outsole. The insole and the outsole are matched to form an air chamber, the matching holes are hemispherical, and the air cushion protruding blocks are higher than the anti-skid protruding blocks. Automatic adjustment of air pressure between the air chambers is achieved through the communicating grooves, overlarge local pressure intensity is avoided, foot impact peak pressure is reduced, and joint loads are relieved.

The utility model discloses a rotor, motor and compressor relates to motor technical field, the rotor includes rotor core and permanent magnet, the rotor core includes iron core body, the iron core body includes at least one first punching sheet and a plurality of second punching sheets that are laminated along the axial direction, the first punching sheet and the second punching sheet are respectively provided with a magnetic steel groove, the groove wall of the magnetic steel groove of the first punching sheet is provided with a limiting convex part, the shortest distance between the limiting convex part and the groove wall opposite to the limiting convex part is L, and the width of the magnetic steel groove is W; the permanent magnets are arranged in the magnetic steel grooves, and the thickness of each permanent magnet is T, and L is larger than 0 and smaller than 5 * (W-T). According to the technical scheme provided by the utility model, the permanent magnets can be prevented from vibrating when the rotor rotates, so that the noise level of the motor and the compressor can be improved.

The invention provides a battery module multi-stage pressure relief-explosion suppression-fire retardance guide row device, and belongs to the technical field of safety protection and explosion prevention of lithium ion batteries, the battery module multi-stage pressure relief-explosion suppression-fire retardance guide row device comprises a battery module box, a connecting pipe and a gas treatment pressure relief box, a plurality of single lithium batteries are arranged in an inner cavity of the battery module box, and a battery pressure relief valve is arranged at the top of each single lithium battery; a gas flow guide mechanism is arranged at the top of an inner cavity of the battery module box, the gas outlet end of the battery pressure release valve is communicated with the gas flow guide mechanism, one end of the connecting pipe is communicated with the gas flow guide mechanism, a rotational flow condensation mechanism, a free radical weakening mechanism and a fire-retardant pressure release mechanism are arranged in the gas treatment pressure release box, and the rotational flow condensation mechanism is communicated with the free radical weakening mechanism. The free radical weakening mechanism communicates with the fire-retardant pressure relief mechanism, and the end, away from the gas flow guide mechanism, of the connecting pipe communicates with the rotational flow condensation mechanism. According to the device, the flame propagation and explosion risks are reduced, and the operation safety of the mining lithium battery system in a limited space is improved.