43results about How to "Fast truncation" patented technology

The invention relates to a current transformer tail current truncation method in failure protection. The method comprises the following steps that differential current of a sampling value is calculated; Fourier transform is performed on the differential current so as to determine the fundamental wave and the harmonic wave of the differential current; differential amplitude restoration is performed on the fundamental wave and differential amplitude restoration is not performed on the harmonic wave; CT tail current and short circuit current are determined according to the fundamental wave, the harmonic wave and amplitude restoration; and the criterion for CT tail current truncation is constructed according to the CT tail current and the short circuit current, and the braking coefficient of the criterion is corrected. According to the technical scheme, misoperation of failure protection is enabled not to perform under the condition of the CT tail current.

The invention relates to a cut-off device, in particular to a high-efficiency nail cut-off device for hardware. In order to achieve the technical purposes that the high-efficiency nail cut-off device for hardware is good in cut-off quality, good in application effect and convenient to fix in the cut-off process, the high-efficiency nail cut-off device for hardware comprises a placement plate, a fixing block, a cutter, a lifting rod, a first connecting rod, a first piston, a second piston, a second connecting rod, a third piston, a fourth piston, a cylinder body, a rack, a motor, a sliding rail, a sliding block, a support and a gear, wherein the sliding rail is arranged on the left side in the support, the sliding block is arranged on the sliding rail and provided with the rack, and the motor is arranged on the right side in the support. The high-efficiency nail cut-off device for hardware achieves the effects of the good cut-off quality, good application effect and convenient fixation in the cut-off process, thereby being high in cut-off speed, reasonable in design and convenient to apply and being a device with high practicability.

The invention relates to cutting equipment, and particularly relates to agricultural wood cutting equipment. The technical problem to be solved by the invention is to provide agricultural wood cuttingequipment which is low in labor intensity, high in cutting speed, and capable of collecting wood shavings occurring in a cutting process, without influence on the surrounding environment. The invention provides agricultural wood cutting equipment. The agricultural wood cutting equipment comprises a bottom plate and the like, wherein a vertical plate is installed at the right side of the top of the bottom plate; a top plate is installed on the upper part of the left side surface of the vertical plate; a drive device is arranged between the right side of the front side surface of the top plateand the upper part of the front side surface of the vertical plate; a cutting device is arranged at the bottom of the top plate; the cutting device is connected with the drive device; and a lifting device is arranged at the left side of the top of the bottom plate. According to the agricultural wood cutting equipment disclosed by the invention, collection treatment can be carried out on the falling wood shavings through the collection device, so that the wood shavings are prevented from influencing the surrounding environment; and wood is fixed through an arc-shaped plate, and can be preventedfrom moving to influence the cutting effect, so that the effects of being low in labor intensity, high in cutting speed, and capable of collecting wood shavings in a cutting process, without influence on the surrounding environment are achieved.

The invention discloses a grape branch and tendril binding device for fruit planting, and relates to the technical field of grape planting. The invention aims to provide the grape branch and tendril binding device for fruit planting, which is simple and convenient to operate, high in working efficiency and capable of quickly bending iron wires to bind grape branches and tendrils. The grape branchand tendril binding device for fruit planting comprises a holding rod, an unwinding mechanism, an iron wire winding mechanism, a clamping mechanism and the like; the unwinding mechanism is fixedly installed on the holding rod, the iron wire winding mechanism is installed on the unwinding mechanism, and the clamping mechanism is installed on the iron wire winding mechanism. According to the grape branch and tendril binding device for fruit planting, by arrangement of the unwinding mechanism, the iron wires can be wound on an unwinding wheel, enough iron wires are placed on the device, an iron wire rotating mechanism is matched with the clamping mechanism, an arc-shaped rack is driven to rotate to drive the iron wires in the clamping mechanism to wind the branches and tendrils and a supporttogether, and by arrangement of an iron wire conveying mechanism, the iron wires can be conveyed upwards through two conveying discs, wherein one of the two conveying discs rotates clockwise while theother conveying disc rotates anticlockwise.

The invention discloses a cutting device for a power cable. The lower end of a stand column is connected with a trolley body, a hydraulic cylinder is arranged in the middle of the lower portion of a supporting cross beam, the lower portion of the hydraulic cylinder is connected with a cable cutter through a piston rod, the upper end of a connecting rod is connected with the supporting cross beam,an electric motor is arranged at the left end of the trolley body, and is connected with a rotating shaft through a supporting part, a cable paying-off roller is arranged on the rotating shaft, a shaft is arranged at the lower end of the connecting rod, and rectangular pressing blocks are arranged on the shaft, and are vertically and symmetrically arranged with the cable as the axis. According tothe cutting device for the power cable, the electric motor drives the cable paying-off roller to carry out paying off, the four rectangular pressing blocks are used for pressing the cable, a length counter is observed, at the moment, when the length of the length counter reaches the value required by a user, the hydraulic cylinder is started for enabling the piston rod to drive the cable cutter toact so as to cut off the cable to be cut, and the device is high in cutting-off speed, high in efficiency and accurate in cutting.

The invention provides improved raw material mixing and extruding equipment for tile production, and belongs to the technical field of building material production and processing equipment. The improved raw material mixing and extruding equipment for tile production comprises a box body, a first motor, an adjusting motor, a second motor, a pre-assembling box, a brake cylinder and a die changing motor, wherein a mixing box is arranged in the box body and is fixedly connected with the inner side wall of the box body; and a mounting rod is arranged in the mixing box. A spiral extrusion rod slowlypushes materials forwards in the rotating process; the materials pass through material forming grooves in a die changing barrel; and due to the fact that the ends, close to an extrusion pipeline, ofthe multiple material forming grooves are round, and the ends, away from the extrusion pipeline, of the multiple material forming grooves are rectangular, oblate and square, the material forming grooves can correspond to different types of bricks and tiles, so that when the amount of demand for different kinds changes, a die can be conveniently replaced as required, so that the applicability of the equipment is greatly improved.

The invention belongs to the technical field of packaging box production, and particularly relates to a production system for color printing packaging boxes. According to the production system, the problems that an existing production system is generally simple in design, and interlocking between every two adjacent procedures cannot be achieved, so that the rejection rate of the produced packagingboxes in the detection process is high can be solved. According to the following scheme, the production system comprises a cutting device, a printing device, an oiling device, a veneering device, a box rolling device, a box pasting device, an inspection device and a packaging device, wherein the cutting device comprises a cutting mechanism and a storage mechanism, the cutting mechanism comprisesa feeding table, a gantry is fixed on one side of the outer wall of the top of the feeding table through screws, and a motor is fixed on the inner wall of the top of the gantry through screws. According to the production system for the color printing packaging boxes, interlocking between every two adjacent links is achieved, each link easy to generate waste products in the production process of the packaging boxes is optimized, and the qualified rate of the produced packaging boxes is generally high, so that the production benefit of enterprises is remarkably improved.

The invention discloses an automobile part rapid cutting-off machine. The machine comprises a cutting-off machine main body, a working table and a cutting-off device; the working table is arranged onthe upper side of the cutting-off machine main body and is fixedly connected with the cutting-off machine main body, the cutting-off device is arranged inside the cutting-off machine main body and isembedded in the cutting-off machine main body, and a motor is arranged on the left side of the cutting-off machine main body and is connected with the cutting-off machine main body in an embedding mode. According to the machine, a movable cutter can move left and right and up and down through a movable guide rail so that the cut-off position of a part can be more accurate and can not generate flaws, the rotary cutter is arranged so that the cutting speed can be higher, the efficiency can be higher, the automobile part can be cut off, the parts of other materials can also be cut off, the multipurpose performance of the machine is embodied, and a cooling device is further arranged in the cutting-off device so that cooling and dust clearing can be carried out on the cut part under the controlof an electromagnetic valve.