7results about How to "Adjust stiffness" patented technology

The utility model relates to the technical field of machining equipment, and provides a mechanism for conveniently machining a shaft body, which comprises an outer frame and an abutting shaft connected to the outer frame, and further comprises a spool head synchronous belt and an abutting shaft synchronous drive, a plurality of trapezoidal guide blocks are arranged on the side of the bottom of an upper wheel of a spool, a steering block is further connected to a platform frame, and the steering block is connected with a rotating shaft. A rotating shaft is arranged on the steering block in a penetrating mode, one end of the rotating shaft is connected with a scraping knife, the other end of the rotating shaft extends towards the trapezoidal guide block to control the rotating shaft to tilt, the extending end of the rotating shaft is further sleeved with a rotating shaft sleeve, and a spring is further connected between the platform frame and the rotating shaft sleeve to facilitate resetting after tilting. The tilting amplitude of the scraping knife is determined by the angle and the height of the trapezoidal guide block, the angle between the scraping knife and the end face of the shaft body can be accurately controlled by the moving track of the guide block, and the downward pressing force during resetting can be set by adjusting the rigidity of the spring, so that the consistency of the scraping force and the scraping angle each time is ensured.

The application discloses a high-voltage bushing transport adjustable damping type shock-absorbing support frame and relates to the technical field of high-voltage bushing transportation.The high-voltage bushing transport adjustable damping type shock-absorbing support frame comprises a support and a shock-absorbing component, each shock-absorbing component comprises a base, the base is supported on a mounting base surface, a spring seat, the spring seat is arranged above the base and fixed on the support, a coil spring, the coil spring is connected with the base and the spring seat at two ends respectively, and a damper, the damper comprises a pressure cylinder and a flow rate regulating valve, the pressure cylinder is arranged in the coil spring in a spaced mode, a cylinder body of the pressure cylinder is fixed on the base, a piston rod top end is fastened with the spring seat through locking pieces, and the flow rate regulating valve is installed on a fluid passage of the pressure cylinder to regulate the flow rate of fluid in and out of the pressure cylinder.Through the flow rate regulating valve, the flow rate of fluid in the pressure cylinder can be regulated, the rigidity of the pressure cylinder is further regulated, the damping size of the coil spring is regulated, different transportation conditions can be adapted, and the safety and stability of the high-voltage bushing transportation process are ensured.

An air supply system of an air suspension includes a supercharger, a plurality of air spring air bags, an air tank, a first three-way valve, a second three-way valve, a first two-way valve, a second two-way valve, a plurality of air spring electromagnetic valves, a first channel, a second channel, a third channel, a fourth channel, a fifth channel and a sixth channel, the first channel is connected with the supercharger; the second channel is connected between the supercharger and the first three-way valve; the third channel is connected between the first three-way valve and the air tank, the first two-way valve is connected to the third channel; the fourth channel is connected between the first three-way valve and the supercharger, the second two-way valve is connected to the fourth channel, the second three-way valve is connected to the fourth channel between the second two-way valve and the first three-way valve; one end of the fifth channel is connected with the second three-way valve, the other end of the fifth channel is connected with the plurality of air spring electromagnetic valves, each air spring electromagnetic valve is respectively connected with each air spring air bag; one end of the sixth channel is connected with the second channel, the sixth channel is connected with the second three-way valve.

The utility model discloses a vehicle-mounted air conditioner with a noise reduction and shock absorption structure, and relates to the technical field of vehicle-mounted air conditioners, the vehicle-mounted air conditioner with the noise reduction and shock absorption structure comprises a compressor, and an upper noise reduction and shock absorption device and a lower noise reduction and shock absorption device are installed at the top and the bottom of the compressor respectively. The other ends of the upper noise reduction and shock absorption device and the lower noise reduction and shock absorption device are fixedly connected with an upper fixing frame and a lower fixing frame respectively; according to the utility model, the lower sound-absorbing cotton and the upper sound-absorbing cotton sleeve are arranged and matched with the sound insulation effect of the rubber pad, so that an all-around noise reduction system is constructed, noise generated during vibration of the compressor can be greatly reduced, a quiet and comfortable environment is created in a vehicle, the riding experience of a driver and passengers is improved, and the interference of the noise to the driver and passengers is reduced; especially in long-distance driving, fatigue can be relieved.

This invention discloses a method for adjusting the directional stiffness of a rubber stack. The method involves vertically configuring longitudinal holes with rectangular cross-sections (the length of which aligns with the running direction) within the rubber stack, influencing both lateral and vertical stiffness. Also included are transverse holes with rectangular cross-sections (the length of which aligns with the running direction) influencing both longitudinal and vertical stiffness. Elastic fillers, whose stiffness values ​​in a specific direction are set as needed, are then filled into both the longitudinal and transverse holes. These elastic fillers are either original stiffness fillers with the same stiffness as the rubber in the stack, high-stiffness fillers with stiffness greater than the stack's rubber stiffness, or low-stiffness fillers with stiffness less than the stack's rubber stiffness. The advantages are that the stiffness in a specific direction of the rubber stack can be easily adjusted by replacing the elastic filler before application, and the amount of increase or decrease in stiffness in a specific direction can be adjusted by selecting the appropriate elastic filler.

The utility model relates to the technical field of detection devices, and discloses a proton exchange membrane detection device which comprises a processing platform, an air pipe penetrates through and is fixedly connected with the bottom of the processing platform, a box body penetrates through and is fixedly connected with the bottom of the air pipe, and a first electric valve is arranged on the outer wall of the air pipe. Conveying pipes penetrate through and are fixedly connected to the two sides of the box body, the conveying pipes penetrate through and are fixedly connected with the machining platform, second electric valves are arranged on the outer walls of the conveying pipes, and evenly-distributed sealing plates penetrate through and are slidably connected to the interior of the machining platform; fixing rods penetrate through the periphery of one side of the sealing plate and are slidably connected with the periphery of one side of the sealing plate. According to the utility model, through linkage among the air pipe, the box body, the first electric valve, the air pump, the conveying pipe, the second electric valve, the sealing plate, the fixing rod, the through pipe, the third electric valve, the first spring and the sliding rod, the stretching strength can be quickly adjusted according to different proton exchange membranes.

The invention relates to the technical field of pre-oxidized fibers, and particularly discloses a cotton spinning pre-oxidized fiber and a preparation method thereof. The preparation method comprises the following steps: mixing a polyacrylonitrile precursor with a first modified oil agent to obtain a pretreated precursor; the first modified oil agent comprises polytetrafluoroethylene dispersion liquid, nano aluminum oxide and a silane coupling agent; carrying out gradient pre-oxidation on the pre-treated precursor in an air atmosphere under the conditions that the temperature is 215-255 DEG C and the tension is 1650-2100 cN, so as to obtain a pre-oxidized fiber; immersing the pre-oxidized fiber into a second modified oiling agent for oiling and curling to obtain a cotton spinning pre-oxidized fiber; the second modified oiling agent comprises an antistatic agent, a bundling agent and a moisture absorption friction increasing agent. According to the invention, the structural stability and antistatic property of the fiber are improved by controlling the condition parameters of pre-oxidation and optimizing the components and proportion of the first modified oil agent and the second modified oil agent, so that the spinnability of the cotton spinning pre-oxidized fiber is improved, and high-quality and large-scale cotton spinning processing of the pre-oxidized fiber is realized.