49results about How to "Cut off fast" patented technology

The invention discloses a self-adaptive full-automatic pipe cutting machine which comprises annular supports, an annular rail, an annular drive mechanism, clamping mechanisms, a feeding mechanism and cutters. The annular rail is arranged on the annular supports, the clamping mechanisms are arranged on one sides of the annular supports, the annular drive mechanism is arranged on the annular rail, the feeding mechanism is arranged on the annular drive mechanism, and the cutters are arranged at the front end of the feeding mechanism. Through the mode, the self-adaptive full-automatic pipe cutting machine has the advantages of being high in reliability performance, accurate in locating, compact in structure, high in cutting-off speed, high in efficiency, orderly in cutting opening, good in pipe adaptability, convenient to use and the like, and meanwhile has the wide market prospects in the pipe cutting field.

The invention provides a DC limiter and a synergic control method of the same and a DC circuit breaker. The DC limiter comprises a first current through branch, a first transferring branch and a current limiting branch. By the DC limiter, a fault current can be prevented from being raised, and time is provided for fault detection; and moreover, a large amount of half-control devices are employed,and the cost of the DC limiter is reduced. According to the synergic control method of the DC limiter and the DC circuit breaker, provided by the invention, a positive current direction and a negativecurrent direction are performed, synergic control of the DC limier and the DC circuit breaker is achieved by controlling on/off of the half-control devices, the advantages of the DC limiter and the circuit breaker are fully developed, meanwhile, the influence of a DC circuit inductor on current cutting speed is prevented, the fault current cutoff time is reduced, the lifetime of equipment in a high-voltage DC power transmission system is prolonged, the fault misjudgment probability can be reduced, and the reliability of the high-voltage DC power transmission system is improved.

The invention discloses a chain cutter. The chain cutter comprises a baseplate, a bracket, a cutting cylinder, a material guide chain wheel, a cutting insertion plate, a cutting striker, a striker fixed base and a cutting oil cylinder, wherein the cutting cylinder is arranged on the baseplate; the material guide chain wheel is arranged at one side of the cutting cylinder; the cutting insertion plate is arranged on the cutting cylinder; the bracket is arranged on the baseplate; the cutting oil cylinder is fixed above the bracket; the striker fixed base is connected below the cutting oil cylinder; and the lower end of the striker fixed base is connected with the cutting striker. Through the mode, the chain cutter has the advantages of high reliability, precise positioning, compact structure, quick cutting speed, high production efficiency, low noise, simple operation and high automation degree, can cut off chains with any lengths in a setting manner, and has wide market prospect on the chain transmission market.

The invention relates to a method and a device for cutting a metal-moulded honeycomb thin wave plate, which are characterized in that: the cutting is performed from two sides to the middle part of the wave plate in a shearing way to make a shearing face at an oblique angle of 60+/-10 degrees. The method and the device simply and obliquely cut the moulded honeycomb thin wave plate accurately at one time without additionally processing the oblique angle; at the same time, a cutting opening is flat and straight, has no burr edge and does not need to be deburred; and the cutting force in opposite direction is uniform and does not cause wave deformation, so secondary reshaping and processing are not needed. An upper cutter cuts at a high speed and with a high cutting efficiency while moving downwards and is used together with a wave plate continuously moulding machine; and equipment is simple and can obliquely cut at any oblique angle. A balance device arranged on the upper cutter can ensure that shearing on two sides is synchronous and that the shearing does not deform substantially. The cutting method of cutting from two sides to the middle part in the shearing way is weak in cutting force, simple in used equipment, low in requirement on the equipment and low in cost.

The invention discloses garden mowing equipment which comprises a rack, a mowing structure, a blocking cover and a weed poking device, the mowing structure is fixed to one end of the rack, the weed poking device is arranged on one side of the bottom edge of the surface of the blocking cover, a rotating shaft is arranged in the center of the bottom of a driving mechanism, and the rotating shaft isrotationally connected with the driving mechanism. A protection device is arranged on the surface of the rotating shaft and located at the bottom of the driving mechanism, and a cutting disc is fixedto the position, close to the bottom of the protection device, of the surface of the rotating shaft. The invention relates to the technical field of garden equipment. The garden mowing equipment achieves the effect of high adaptability, can adapt to both fragile straw weeds and flexible straw weeds, effectively avoids winding of rotating shafts by stems and leaves of the weeds, guarantees mowing efficiency, can reduce throwing of the weeds, facilitates subsequent sweeping, reduces harm to the face of a human body, is safe and reliable, and improves the service performance.

The invention discloses a rapid pneumatic automatically-controlled gas safety shut-off valve which comprises a valve body and a cylinder which are connected. The valve body is cylindrical and provided with a sealing seat and a sealing pressure ring sequentially from outside to inside, the sealing seat and the sealing pressure ring are mounted on a butterfly plate, a valve rod connected with the cylinder penetrates through the whole valve body, a support is arranged at the joint of the valve body and the cylinder, one end of the valve rod is positioned in the support, the valve body and the valve rod are of an eccentric structure, namely, the rotating center of the valve rod deviates from the center of the valve body, and the valve body and the butterfly plate are of an eccentric structure, namely, the center of the valve body deviates from the center of the butterfly plate. The rapid pneumatic automatically-controlled gas safety shut-off valve is of an eccentric multilayer hard-sealing contact seal structure, so that the valve is hermetically and automatically compensated when closed, the valve shut-off speed is higher, and air tightness is higher.

The invention discloses an intelligent mowing and collecting device for municipal gardens. The intelligent mowing and collecting device for the municipal gardens a first cylinder, wherein a first vertical rod is arranged in the first cylinder, a second cylinder sleeves the first vertical rod, a third cylinder sleeves the second cylinder, a power device is arranged between the second cylinder and the third cylinder, a second vertical rod is arranged on the side face of the third cylinder, rollers are arranged on the lower portion of the second vertical rod, and a first mowing line is arranged at the lower end of the second vertical rod; an arc-shaped rod is arranged on the side face of the second cylinder, a groove is formed on one side of the arc-shaped rod, and an annular elastic belt is arranged in the groove of the arc-shaped rod; the top surface of the arc-shaped rod penetrates through a second mowing line, a collecting device is arranged at the upper part in the first cylinder, an elastic funnel-shaped sleeve is arranged on the bottom surface of the first cylinder, and a handle is arranged on the side face of the first cylinder. According to the intelligent mowing and collecting device for the municipal gardens, a hand-held device is used for automatically mowing a garden, labor intensity is reduced, the effect of dragsaw cutting is achieved by moving the mowing line in the length direction of the cutting part of the mowing line, plants of different hardness and different materials are rapidly cut, and the device can timely and intensively recover cut weeds.

An output short circuit protection device for a direct-current power supply is composed of a relay circuit, a startup retaining circuit and an insurance resistor. The output short circuit protection device is arranged behind the direct-current power supply to prevent output short circuit of the direct-current power supply or protect the direct-current power supply when an electrical appliance is in short circuit. Thus, accidents caused by short circuit are avoided, the cut-off speed is high, and the effects of rear end short circuit on a preceding stage power supply are effectively prevented. After short circuit is removed, output is started and switched on again. Furthermore, when the output is access to the direct-current power supply and a positive electrode and a negative electrode are reversely connected, the output cannot be started and switched on. The output short circuit protection device is simple in circuit, safe, reliable, convenient and practical.

An efficient wire cutting machine for metallic wire is composed of a machine frame, a wire straightening device, a wire feeder, a wire cutter with the blade rotating at high speed, a wire reel, and a motor. Its advantages are high speed, simple structure and high automation level.

The invention discloses rapier loom weft scissors, and belongs to the technical field of rapier loom accessories. The weft scissors are characterized in that a weft hook knife (4) is rotationally arranged on a hook knife mounting frame (9) through a hook knife rotating shaft (6); a rotating wheel (12) rotationally arranged in the vertical direction is disposed on one side face of the hook knife mounting frame (9), and a push rod (11) and a pull rod (14) are hinged to the end face of the rotating wheel (12) separately; the rotating wheel (12) is hinged to the tail portion of the weft hook knife(4) through the push rod (11), and the rotating wheel (12) is fixedly connected with one side of a cutter (3) through the pull rod (14). The push rod and the pull rod which are hinged to the rotatingwheel can be matched with the cutter to move back and forth to synchronously push the head portion of the weft hook knife to swing upwards or sink downwards, and the cutter and the weft hook knife are coordinating in action, so that the weft cutting time and frequency are controlled in a specific position and time, and the weft breaking phenomenon is avoided. The installation height and inclination angle of the cutter can be adjusted freely according to needs, and the cutter can be conveniently replaced in time.

The invention discloses an electric paring knife for peeling "inside thorns" of pineapple. The main features are: there is a star-shaped cutter capable of high-speed rotation in the arc-shaped groove at the center of the lower part of the casing. The blade of knife is made as semicircle, and the lower end of star-shaped sharpener stretches out beyond the lower end surface of casing bottom; DC motor is arranged at the left end of the 3rd inner cavity of casing top; There is a fourth inner cavity, and a rechargeable battery is arranged in the fourth inner cavity, and the DC motor drives the star-shaped cutter to rotate at high speed through a chain drive. When peeling a pineapple, you only need to use a knife to peel off the outer skin of the pineapple, and then open the present invention, and form the toothed knife of the star-shaped paring knife that rotates at high speed along the stamens and styles hidden in the pineapple cavity in an orderly arrangement. Push forward in the direction of the "inner thorn" of the pineapple, and the "inner thorn" of the pineapple can be easily and quickly peeled off, and the pineapple can be peeled easily and quickly.

The invention discloses a pelletizer, and aims to provide a dual-frequency speed-control pelletizer. The key points of the technical scheme are that the dual-frequency speed-control pelletizer comprises a pelletizer main body; a cutting mechanism and a feeding mechanism are sequentially mounted on the pelletizer main body; and the feeding mechanism is used for transporting plastic raw material into the cutting mechanism. The dual-frequency speed-control pelletizer is characterized in that the feeding mechanism comprises a power roller and a pressure roller clung to the outer surface of the power roller; the cutting mechanism comprises a rotary cutter component rotationally connected with the pelletizer main body and used for cutting the plastic raw material; power parts which are respectively used for driving the power roller and the rotary cutter component to rotate, and a control part are arranged on the pelletizer main body; and the control part is used for controlling the rotation speeds of the power parts used for driving the power roller and the rotary cutter component to rotate.

The invention relates to a recovery device, in particular to a medical infusion tube treatment and recovery device. The technical purpose of the invention is to provide the medical infusion tube treatment and recovery device capable of cutting an infusion tube quickly and preventing liquid medicines from sticking to clothes. According to the technical scheme, the medical infusion tube treatment and recovery device includes a crushing box and the like; support plates are installed on the left and right sides of the crushing box, a discharge pipe is installed in the middle of the bottom of the crushing box, a discharge pipe is connected with the crushing box, a feeding pipe is installed in the middle of the top of the crushing box, the feeding pipe is connected with the crushing box, a cutting device is arranged on the right side of the feeding pipe, and a crushing device is arranged in the crushing box. The device cuts the infusion tube by a cutting device, and crushes the cut infusiontube by the crushing device so that an operator can more conveniently handle the infusion tube, and the effects that the cutting speed of the infusion tube can be fast, and the liquid medicines are prevented from sticking to clothes are achieved.

The invention provides a pair of hydraulic billet shears which comprises a base, a rack, a shear device, a running mechanism, a hydraulic station and a control host, wherein a roller supporting device is fixed on a support bracket; a shear oblique frame is internally provided with an internal cooling water channel; a travel switch is arranged on the shear oblique frame; a shear oil cylinder is fixed on a shear oil cylinder fixing bar and the support bracket and fixedly connected with a lower knife seat; a shear oil cylinder housing is provided with a spiral first external cooling water channel; the first external cooling water channel is connected with the internal cooling water channel; a running oil cylinder is fixed on the base and fixedly connected with the support bracket; a running oil cylinder housing is provided with a spiral second external cooling water channel; and wheels are arranged in adjustable U-shaped grooves in guide rails in an embedded manner. The pair of shears is high in cutoff speed, low in equipment failure, high in blade utilization ratio and production efficiency and low in energy consumption, and sheared end faces are square and tidy.

The invention relates to a pulse modulator and a drive circuit thereof. The drive circuit comprises a start electric control switch and a censored electric control switch, the start electric control switch and the censored electric control switch are arranged in series, a discharge branch is further arranged in the drive circuit, the discharge branch is connected to a control end of the start electric control switch, a discharge electric control switch is arranged in series on the discharge branch, and a control end of the discharge electric control switch is connected to a censored pulse generation unit. When the censored pulse generation unit outputs a drive signal, a start pulse generation unit stops outputting the drive signal, the discharging electric control switch is turned on by the drive signal, and a parasitic capacitor on the start electric control switch is turned on to discharge through the discharge branch so that a level keeping the start electric control switch to be turned on quickly becomes a low level, the start electronic control switch is turned off quickly then. Compared with a traditional drive circuit that only a drive signal is stop outputting, the drive circuit is advantageous in that time consumed by cut-off of the start electric control switch is greatly reduced, and fast cut-off of the start electric control switch is achieved.

The invention discloses a spinning type manually-operated hydraulic steel bar cutting-off device capable of working in two directions. The device comprises a knife seat and a control cabinet. Stationary knives are mounted on the knife seat. A movable knife is mounted beside each stationary knife. The control cabinet is arranged beside the knife seat. Hydraulic rods are arranged at the front end of the control cabinet. Oil drain valves are arranged above the control cabinet. A hand wheel is arranged beside the oil drain valves. A reversing rod is arranged on the side face of the control cabinet. A linkage rod is arranged beside the reversing rod. The spinning type manually-operated hydraulic steel bar cutting-off device has the beneficial effects that the two-directional cutting-off knives can be used separately or together; the application scope is wide; and in addition, steel bar cutting-off speed can be increased.

The invention relates to the technical field of fuses, in particular to a surface-mounted controlled fuse. The fuse comprises a first electrode, a second electrode and fusible alloy; the first electrode is electrically connected with the second electrode through the fusible alloy; the fuse further comprises a ceramic heating piece; the first electrode and the second electrode are attached to the surface of the ceramic heating piece respectively; a heating electrode is arranged on the ceramic heating piece and is in contact with the fusible alloy; and a main circuit formed by the first electrode, the second electrode and the fusible alloy is tightly attached to the ceramic heating piece, so that a heat transfer path is short, and heat transfer is faster and more effective; the ceramic heating piece comprises an upper ceramic sheet and a lower ceramic sheet; a heating resistor is arranged between the upper ceramic sheet and the lower ceramic sheet; since ceramic has good heat conduction capability and high thermal shock resistance, and the upper ceramic sheet, the heating resistor and the lower ceramic sheet form a sandwich layer structure, so that the phenomenon that the first electrode, the second electrode and the heating resistor which are attached to the surface of the ceramic heating piece are broken down again after a current path is broken off at high temperature can be avoided.