42results about How to "No risk of failure" patented technology

A load release pin for concrete forming apparatus is disclosed. The pin supports the concrete forming apparatus and any plastic concrete during forming of a concrete structure. After the concrete has set sufficiently, the pin is displaced to release the load on the forming apparatus. The pin has an asymmetric shape that prevents it from being used in an incorrect orientation. In addition, the pin provides sufficient strength to safely support the forming apparatus and any plastic concrete even if it is mistakenly inserted in the displaced position.

The invention discloses a washing machine. The washing machine comprises a machine body, an inner drum, a filtering assembly, a circulating pump assembly and a draining pump assembly. The inner drum is arranged in the machine body, the filtering assembly is arranged in the machine body, a filtering cavity is defined in the filtering assembly, the filtering assembly is provided with a water inlet, a water outlet and a draining port which are communicated with the filtering cavity, the water inlet is communicated with the inner drum, a detachable filtering element is arranged in the filtering cavity and located between the water inlet and the water outlet in the water flowing direction, the circulating pump assembly is connected with the filtering assembly and communicated with the water outlet, and the draining pump assembly is connected with the filtering assembly and communicated with the draining port. According to the washing machine, substances like soft flocks in circulating water can be effectively and thoroughly removed; the circulating water enters the circulating pump assembly through the water outlet, the performance of a circulating pump will not be influenced, and the risk of failure of the circulating pump can be avoided; operation is convenient, the use range of the circulating water is expanded, water resources are saved, and the user experience is good.

The present invention relates to the technical field of wireless communication, and in particular to a rotating vibrator installation and fixing seat, which is used to fix the vibrator on a reflector, including a body, and the body includes an upper mounting surface, a lower mounting surface and a side ring set opposite to each other. wall; the side ring wall is provided with a limit structure for connecting with the reflector; the upper mounting surface is provided with a buckle and a positioning column for fixing the vibrator; the limit structure includes a segmented ring, and the side The baffle, the upper baffle, the curved spring arm and the lower baffle. The rotary vibrator installation and fixing seat created by the present invention only needs to perform a small-angle rotation operation to complete the installation of the vibrator installation and fixing seat and the reflector, and the operation is very simple and fast; The external force makes the structure stable and reliable without the risk of failure. The invention also avoids the direct contact between the vibrator and the reflector, so that the performance of the vibrator using the vibrator to install the fixed seat is stable, and there is no hidden danger of passive intermodulation.

A method for maintaining the ink circulation system of a ceramic inkjet machine provided by the present invention includes: after the ceramic inkjet machine stops printing, discharge the remaining ceramic ink in the ceramic inkjet machine; inject cleaning liquid into the ceramic inkjet machine Clean the ink circulation system of the ink circulation system; drain the cleaning liquid, inject the pre-prepared maintenance solvent into the ink circulation system; adjust the parameters of the ceramic inkjet machine to the predetermined maintenance parameters. The present invention injects a maintenance solvent into the ink circulation system of the ceramic inkjet machine, and adjusts the parameters of the ceramic inkjet machine to predetermined maintenance parameters, so that the ceramic inkjet machine will not bring the risk of failure when it is idle or shut down for a long time, and reduces the risk of failure. Reduce the probability of nozzle clogging and prolong the service life of the ink circulation system of the ceramic inkjet machine.

The invention relates to a transition section-free monopole offshore wind turbine foundation structure, and aims to provide a transition section-free monopole offshore wind turbine foundation structure, which is simple in structure, convenient to construct and high in cost performance. A transition section is eliminated, so that engineering cost is saved, firm connection is ensured, and the failure risk of a grouting compound is eliminated. The technical scheme of the invention is as follows: the transition section-free monopole offshore wind turbine foundation structure is provided with a monopile steel pipe pile and a wind turbine bottom section tower connected with the steel pipe pile, and is characterized in that a foundation top flange is arranged at the top of the steel pipe pile; a bottom section tower flange is arranged at the bottom of the wind turbine bottom section tower; a leveling mechanism is arranged between the two flanges; and the two flanges are connected through bolts and nuts. The transition section-free monopole offshore wind turbine foundation structure is applied to the offshore wind power generation industry.

The invention discloses a self-locking device for safety plugging of a plug-in type circuit breaker, and the device is characterized in that the device comprises a support (1); a connecting rod (2) isinstalled in a sliding hole (101) of the support (1); the lower end of the connecting rod (2) is linked with a push rod (3) which is horizontally disposed in an installation hole (102) of the support(1); the push rod (3) is sleeved by a spring (4), and the head of the push rod (3) is linked with the lower end of the support (1); the connecting rod (2) can drive the push rod (3) to make horizontal linear movement in a process that the connecting rod (2) moves up and down in the sliding hole (101). According to the invention, the rotating motion of a conventional self-locking linkage mechanismis changed into translation, thereby improving the stability of the conventional self-locking linkage mechanism, increasing the self-locking support points of a self-locking mechanism, and guaranteeing that a self-locking device causes no failure even if the circuit breaker is plugged in an inclined manner.

The invention discloses a double-fed wind generator rotor flux linkage deadbeat fault operation method. When the grid voltage drops, through the prediction model of the rotor voltage, in order to make the rotor flux follow its given value in the model, the rotor flux is realized. The deadbeat control of the chain needs to replace the value of the rotor flux linkage at the next moment with the given value of the rotor flux linkage at the next moment. The given value of the rotor flux linkage follows the actual value of the stator flux linkage, and the predicted The rotor voltage in the two-phase synchronous rotating coordinate system undergoes coordinate inverse conversion to obtain the rotor voltage in the rotating coordinate system of the two-phase rotor speed, and finally undergoes PWM modulation. The invention has the advantages of simple implementation, good decoupling, fast dynamic response and strong robustness. In the grid fault state, a dead-beat control method for the rotor flux linkage is proposed, which can control the rotor fault current at 1.5-1.6 times the rated value. Within the current, the electromagnetic torque ripple is small during the fault, the dynamic response speed is fast, and the control precision is high.

A permanent-magnet rotor with embedded magnetic steels comprises a rotor core sleeved on a rotor shaft. The magnetic steels are inserted on the rotor core, balancing rings sleeved on the rotor shaft are arranged beside the rotor core and made of non-magnetic conductive materials, an inner ring and an outer ring are arranged on one side of each balancing ring, each inner ring is connected with the corresponding outer ring through more than two reinforcing ribs, counter bores are arranged between each two adjacent reinforcing ribs, each outer ring is provided with more than two uniformly distributed and projecting petal blocks, more than one projecting positioning boss is arranged at the other end of each balancing ring, corresponding positioning holes are arranged on the rotor core, the positioning bosses are inserted into the positioning holes, more than one projecting boss is further arranged at the other end of each balancing ring and arranged on the end faces of the magnetic steels by means of pressure welding, and the number of the bosses is not less than that of the magnetic steels. The permanent-magnet rotor with the embedded magnetic steels has the advantages of simple and reasonable structure, axial fixing reliability of the magnetic steels, low electromagnetic vibration and noise, low temperature rise and less electromagnetic material consumption.

The invention relates to a multi-cabin-section spacecraft heat load analysis method. The multi-cabin-section spacecraft heat load analysis method comprises the steps that (a), the outer heat flow condition of a multi-cabin-section spacecraft under various work modes is analyzed; (b), according to the heat output and uncontrollable heat dissipating quantities in all cabin sections under all modes,the controllable heat dissipating quantities generated in all the cabin sections under all the modes is counted up; and (c), the heat dissipating capacity of all the cabin sections is determined, thecontrollable heat dissipating quantities of the all cabin sections are distributed according to the heat dissipating capacity, and heat dissipating components of all the cabin sections are designed. According to the multi-cabin-section spacecraft heat load analysis method, the weight of a heat management system can be effectively controlled, and the risk of invalid freezing of a radiator is avoided.