15results about How to "Efficient resection" patented technology

The invention discloses a redundant part shaping and cutting device for a motor stator coil winding, and relates to the technical field of motor production equipment.The redundant part shaping and cutting device comprises a frame body, the frame body further comprises a base, a supporting frame is fixedly installed at the top of the base, and a guide rail is fixedly installed at the top of the base; the device comprises a base, an opening and closing cutting mechanism is fixedly installed on the top of the base, a fixing mechanism is fixedly installed on the outer side face of the opening and closing cutting mechanism, the fixing mechanism is slidably installed above a guide rail, and an extrusion mechanism is fixedly installed on the top of a supporting frame and arranged over the opening and closing cutting mechanism. The redundant part shaping and cutting-off device for the motor stator coil winding can accurately and efficiently complete cutting-off work of the redundant part, it is ensured that the length of each winding meets the standard requirement, and the production quality and efficiency of a motor are improved.

The invention provides a feed protection device and method, and relates to the technical field of feed protection, the device comprises a data acquisition module, a controller and a switch control module, the controller is used for controlling the switch control module under the condition that each feed-out loop is in an overcurrent protection state; based on a digital signal corresponding to a phase voltage value of each phase of alternating current output by the UPS system and a digital signal corresponding to a current value of each phase of alternating current in each feed-out loop, which are acquired by a data acquisition module, whether overcurrent occurs in each feed-out loop is judged, and when it is determined that the overcurrent occurs in any feed-out loop, the current value of each phase of alternating current in each feed-out loop is detected. And the switch control module is controlled to cut off the connection between the UPS system and any feed-out loop. According to the feed protection device and method provided by the invention, the fault feed-out loop with the fault in the urban rail transit system can be removed more timely and more effectively by combining the current criterion and the voltage criterion, and the operation stability of the UPS system and the urban rail transit system can be improved.

The utility model relates to a surgical stitching instrument and an end actuator thereof, the end actuator comprises a first clamping component, a second clamping component and a push broach piece, the second clamping component is movably connected with the first clamping component and can be matched with the first clamping component to clamp tissue, the first clamping component is provided with a feed groove extending in the axial direction and a nail bin provided with anastomosis nails, and the second clamping component is provided with a push broach piece. The feed groove divides the opposite surfaces of the first clamping component and the second clamping component into a first part and a second part which are located on the two sides of the feed groove, the width of the first part is larger than that of the second part, and the nail bin is located on the first clamping component where the first part is located. According to the end executor, the nail bin is arranged on the single side of the feeding groove, the function of precisely suturing tissue needing to be reserved is achieved, meanwhile, the tissue to be cut off can be efficiently cut off, and resource waste cannot be caused; by reducing the width of the second part, the end effector is particularly suitable for treating the situation that the excision range of the tissue to be excided is narrow, and the flexibility and adaptability of surgical operation are remarkably improved.

The invention relates to a manufacturing method of a tungsten alloy ring combined product blank. The manufacturing method comprises the following steps that S1, a tungsten alloy ring combined pressed blank is manufactured through cold isostatic pressing; s2, cutting the tungsten alloy ring combined pressed blank to form a plurality of tungsten alloy ring pressed blanks; s3, the tungsten alloy ring pressed blank is subjected to sintering treatment; and S4, the multiple tungsten alloy ring sintered blanks are combined. The method has the effects that the product quality of the tungsten alloy ring combined product blank can be improved, and the production cost of the tungsten alloy ring combined product blank can be reduced.

The invention relates to the technical field of agricultural product processing, in particular to a water chestnut hull breaking and screening device and a working method. The water chestnut shell breaking and screening device comprises a feeding hopper, a conveying mechanism, a cutting mechanism, a screening mechanism and a rack. The bottom of the feeding hopper is provided with a feeding port matched with the water caltrop in shape. The conveying mechanism comprises a belt and a baffle, the baffle is buckled on the belt, and a slideway groove is formed in the middle of the baffle and located on the lower side of the feeding port; the cutting mechanism comprises a blade set located on the upper side of the sliding way groove, the blade set comprises a middle blade and side blades located on the two sides of the middle blade, the middle blade cuts the middle of the water caltrop, and the side blades cut the corner of the water caltrop. The screening mechanism comprises a grinding assembly and a screening assembly, the grinding assembly is located at the tail end of the belt and used for grinding deteriorated pulp, and the screening assembly is located on the lower side of the grinding assembly and used for screening non-deteriorated pulp; the rack ensures that the positions of all the parts are relatively fixed through stable supporting. Efficient and low-cost processing of the water chestnuts is achieved, and the stability of product quality is improved.

The utility model discloses an air heater system and thermal power equipment. The air heater system comprises a primary hot air main pipe and an induced air header pipe, a first hot air branch pipe is communicated with the lower-layer plasma combustion-supporting system, a second hot air branch pipe is communicated with the upper-layer plasma combustion-supporting system, and a third hot air branch pipe is communicated with a combustor of the plasma-free combustion-supporting system; the air inducing main pipe is sequentially provided with a main baffle door, an air heater and an outlet adjusting door; the air heater system is communicated with the third hot air branch pipe, and the air heater is also communicated with the first hot air branch pipe and the second hot air branch pipe. The air inducing header pipe is connected between the third hot air branch pipe and the second hot air branch pipe and between the third hot air branch pipe and the first hot air branch pipe, and when the air heater system is not needed, the air heater system can be effectively cut off. When the boiler is in cold start, the air heater system can be communicated with the plasma combustion-supporting system on the lower layer. When the boiler is started in a temperature state, the air heater system can be communicated with the upper layer plasma combustion-supporting system, and the temperature requirement before primary air powder airflow enters a hearth can be met.

This utility model proposes a screening dust removal machine for the production of granular silicon, comprising: a hollow cylindrical shell (14), the top of the shell (14) being closed, and a product inlet (1) being provided at its edge; a bottom discharge plate (10) being fixed at the bottom of the shell (14), the bottom discharge plate (10) being a downwardly protruding conical surface, and a discharge port (11) being provided at its center; an accelerated dust removal device for removing material dust is fixedly provided below the product inlet (1) inside the shell (14); and a centrifugal screening device for screening materials is fixedly provided below the accelerated dust removal device.

The invention discloses a foam glass cutting production line which comprises a waste collecting mechanism, a conveying belt unit, a feeding mechanism, a first skin cutting mechanism, a second skin cutting mechanism, a first side cutting mechanism, a rotating mechanism, a second side cutting mechanism and a slicing mechanism. The second skin cutting mechanism is used for cutting off the upper skin of the foam glass, the first side cutting mechanism is used for cutting off two opposite side skins of the foam glass, and the foam glass is rotated through the rotating mechanism, so that the other two opposite side skins of the foam glass are cut off by the second side cutting mechanism; and the slicing mechanism is used for slitting the foam glass processed into the flat surface in the thickness direction of the foam glass to form a plurality of glass products, so that the foam glass can be processed into the glass products which are regular in shape, flat in surface and capable of meeting different use thickness requirements.

The invention relates to a grid-connected small power supply intertripping device, and belongs to the technical field of power system control, the device comprises a hard contact expansion circuit and a tripping outlet circuit, the hard contact expansion circuit is used for accessing standby node signals of each tripping switch of a transformer protection device, and the hard contact expansion circuit is in signal connection with the tripping outlet circuit; and the tripping outlet circuit is connected with a circuit breaker on each small power supply grid-connected line. A limited number of standby outlets of the transformer protection device are expanded to form more intertripping outlets, so that the intertripping requirements under different operation modes in a multi-path small power supply grid-connected scene are met, and the problem that the number of standby middle and low voltage side protection outlet contacts of the transformer protection device is small is solved; when many grid-connected small power supplies exist on a low-voltage side bus in a transformer substation, the small power supplies can be timely and effectively cut off from a system, and safe and stable operation of a power system is guaranteed.

The utility model discloses a rubber ring burr cutting device relates to the field of rubber ring production, to solve the mode of the existing technology through arc tensioning strip and tighten the rubber ring and easily lead to the deformation of rubber ring, make the round cutting tool burr cutting of rubber ring inaccuracy, and further damage the problem of rubber ring. The locating disc is connected with the rubber ring in the outer side of the locating disc, and the L-shaped support frame is fixedly connected with the rubber ring in the rear end middle part of the placing table, the front end of the upper end of the L-shaped support frame is fixedly connected with the hydraulic rod, the inner side upper end of the L-shaped support frame is connected with the fixed plate, the lower end of the fixed plate is connected with the movable plate, the lower end middle part of the movable plate is connected with the annular cutter, through the detachable connection design between the locating disc and the placing table, the user can easily replace the locating disc of different diameter, to adapt to the rubber ring of different inner diameter, thereby improve the versatility and flexibility of the device.

The invention discloses a vehicle active short circuit protection circuit, an EMB system, an EPS system and a protection method. The active short-circuit protection circuit for the vehicle is applied to a main circuit comprising a battery, an inverter, a gate driving module for driving the inverter and a motor. The active short-circuit protection circuit for the vehicle comprises a PWM output switch module which is connected in series between the output end of a gate pole driving module and the control end of each lower bridge arm switch tube of an inverter; the short-circuit protection power supply module is powered by a battery and is converted into voltage matched with each lower bridge arm switch tube; the short-circuit protection switch module is connected in series between the short-circuit protection power supply module and the control end of each lower bridge arm switch tube; and the short-circuit protection switch module is switched on when the voltage of the battery exceeds a set threshold value, and each lower bridge arm switch tube is controlled to be switched on, so that each stator winding of the motor is coupled. According to the embodiment of the invention, the fault in the line can be effectively removed.

This utility model discloses a metal wire mesh burr removal device, including a support frame and a base frame, wherein the base frame is fixedly connected to the support frame. It also includes a positioning component and a burr removal component, wherein the positioning component is located on the top of the base frame, and the burr removal component is located on the support frame. This utility model belongs to the field of metal wire mesh processing technology, specifically providing a metal wire mesh burr removal device that solves the problems of manual knife cutting, such as difficulty in cutting through the mesh, potential for misalignment, and poor stability.

The present invention provides a single-phase grounding fault selection method suitable for an electronic feeder terminal, comprising: when the zero-sequence voltage data meets the preset initial start condition, the initial start flag is set; when the time delay corresponding to the initial start flag being true meets the preset period, the zero-sequence voltage and zero-sequence current of N cycles before and after the initial start flag are extracted and pre-processed; at least one fault start point is obtained to determine the validity of each fault start point; the first half-wave zero-sequence voltage and the first half-wave zero-sequence current are extracted after the effective fault start, and when the flow direction is the load side, the first half-wave zero-sequence current is reversely processed; the derivative of the first half-wave zero-sequence voltage is compared with the polarity of the first half-wave zero-sequence current, and the fault selection interval is output according to the polarity comparison result. Beneficial effects: the fault section can be selected quickly and accurately, and the anti-interference ability is strong; at the same time, there is no need to distinguish the system grounding mode, which further improves the accuracy and processing efficiency of the fault selection.

The application discloses a low-temperature freezing rotary cutting device, which is characterized by sequentially sleeving an outer sleeve, an inner sleeve and an inner tube from outside to inside, setting a puncture tip at the head end of the outer sleeve, fixing the tail ends of the outer sleeve and the inner sleeve on a fixing piece, forming an intermediate cavity for the air inlet structure to enter between the outer sleeve and the inner sleeve, setting a sampling groove near the head end of the outer sleeve and the inner sleeve, setting a sealing structure at the intermediate cavity corresponding to the sampling groove position, forming a plurality of release cavities and air inlet chambers communicated with the release cavities, setting the air inlet structure to provide refrigerant to the corresponding release cavities through the air inlet chambers, and setting corresponding freezing holes of the inner sleeve at the release cavities. After the tumor tissue is sucked into the sampling groove under the negative pressure, the refrigerant freezes the tumor tissue through the freezing holes to make the tumor tissue lose the original biological elasticity, and then the tissue is rotary cut through the inner cutting blade on the inner tube, so that the tumor tissue can be effectively removed, and the sampling efficiency is improved.

The invention provides a prostate laser enucleation device based on a flexible mechanical arm, which comprises a main knife part, and the main knife part comprises the flexible mechanical arm used for moving between a prostate and an envelope and a laser head used for cutting so as to complete tissue cutting of a target area in an operation; and the auxiliary part comprises a video imaging structure for displaying and a water inlet and outlet structure for cutting and cleaning, and relates to the technical field of prostate surgery. The device comprises a flexible mechanical arm composed of a plurality of knuckles, and a laser head is arranged at the tail end of the flexible mechanical arm and used for laser cutting and separation of tissue between the prostate and the capsule. The device is further provided with a video imaging system, a laser optical fiber access structure and a water inlet and outlet structure, so that the operation precision, safety and operability are improved. By accurately controlling the flexible mechanical arm, the prostate can be effectively cut off especially at the position close to the urethral sphincter, and meanwhile unnecessary damage to surrounding sensitive tissue is avoided.