50results about How to "Adjustable running speed" patented technology

The invention discloses an air reverse skid conveying system, which comprises multiple air reverse skids, an inlet switching device and an outlet switching device for circularly conveying the air reverse skids at the inlet and outlet positions of the system, and two air reverse skids, which extend in parallel along a straight line, are opposite in conveying directions, and are connected between the two switching devices. The reverse skid conveying system disclosed by the invention completely adopts belt type or roller bed conveying, is frequency-variable and adjustable in operating speed frequency, meets the requirements of high-tempo conveying of the existing automobile plants, and solves the chain oil pollution and noise pollution problems at the same time. The spare parts of the air reverse skid conveying system are universal for absolutely most of the existing ground skids.

A speed regulation control system of a windscreen wiper comprises a motor, a connecting rod structure, a control module and an induction module; the connecting rod structure converts one-way motion ofthe motor into reciprocating motions of the windscreen wiper on a glass surface, and the induction module is used for inducting discrete signals or continuous signals according to one circle of one-way motions of the motor; the control module is in electric signal connection with the motor and the induction module. And the control module provides a target driving effective voltage corresponding to a signal to the motor for controlling the motor according to the signal fed back by the induction module, so that the motor is driven by the target driving effective voltage corresponding to each group of signals in one-way motions of the motor, and the movement speed of the windscreen wiper is further adjusted. By controlling the driving effective voltage of the motor, the variable-speed motions of the windscreen wiper is controlled, so the windscreen wiper is decelerated near a reverse rotation point, and the windscreen wiper is controlled to run in a certain mode in the middle area, thusincreasing the water wiping speed; it is guaranteed that the operating speed of the windscreen wiper in a whole water wiping period is adjustable, elastic deformation of a wiper blade during high-speed water wiping is reduced, and windscreen wiper reverse rotation noises are reduced.

The invention discloses a device for straightening a steel wire split from a steel wire rope. A base disc, three supports, a stepping motor, a ball screw, two guide rails, a clamping mechanism, a straightening wheel frame, four straightening wheels, a supporting frame, a synchronous belt, two synchronous belt wheels, a feeding assembly and a pre-tightening mechanism are installed inside an enclosure. The steel wire to be straightened penetrates from a point B to a point A, sequentially passes through the pre-tightening mechanism, the feeding assembly and the four straightening wheels, and is clamped by the clamping mechanism. The stepping motor is started to drive the ball screw to rotate, and then the two synchronous belt wheels and the straightening wheel frame are further driven to rotate simultaneously, so that the steel wire can be straightened in an omnibearing mode. The ball screw rotationally drives the clamping mechanism to move leftwards. The steel wire is pulled out from the point B to the point A, and straightening of the steel wire is achieved. An experiment with the device shows that the split steel wire with the diameter below 3 mm can be straightened, and the requirements of tensioning, twisting and repeatedly bending the steel wire subsequently are met. In addition, the surface of the steel wire is basically not damaged, the performance of the steel wire is not damaged, equipment is easy to operate, and the operation speed is adjustable.

The invention discloses a multi-stage operating speed adjusting device and method under an automatic cutting mode of a coal cutter. The multi-stage operating speed adjusting device comprises a coal cutter control module and a handheld-type adjusting module. The handheld-type adjusting module comprises a handheld controller, a speed input key, a liquid crystal display, an alarming module and a first indicator lamp. The coal cutter control module comprises a coal cutter controller, a second wireless receiving and transmitting module and a storage. The input end of the coal cutter controller is connected with a speed detecting module, a traveling direction detecting module, a position detecting module and a speed threshold value input key module, and the output end of the coal cutter controller is connected with a coal cutter traveling motor and a second indicator lamp. The multi-stage operating speed adjusting method comprises the following steps of 1, detection for the current positionof the coal cutter; 2, judgment on the current position of the coal cutter and adjustment for the operating speed of the coal cutter; and 3, real-time detection and transmission for the operating speed of the coal cutter. According to the multi-stage operating speed adjusting device and method, design is reasonable, the operating speed of the coal cutter under the automatic cutting mode can be adjusted, optimal speed control over automatic coal cutting is achieved, and the practicability is high.

The invention relates to workpiece demagnetizing equipment, in particular to a tunnel scanning pass-type demagnetizer. The tunnel scanning pass-type demagnetizer comprises a bed body and a control cabinet; the bed body comprises a base and a material loading bridge frame, wherein the material loading bridge frame is positioned above the base and is connected with the base end to end; a sports car is arranged on the base; the base is movably connected with the sports car; the upper part of the sports car is connected with an executive coil by adopting a supporting screw; and the sports car is also provided with a variable frequency motor. By the adoption of the tunnel scanning pass-type demagnetizer, the labor intensity of workers is lightened; the running speed of the sports car, the demagnetizing intensity and the waveform can all be adjusted; safe and efficient demagnetization can be realized; the quality of a workpiece is improved; and therefore, the service life of the workpiece is prolonged.

The invention discloses a pile frame lifting operation mechanism which comprises a hoisting machine group, a vertical column, a top pulley yoke, an operating suspension cage, a hoisting machine over-hoisting limiter, a hoisting machine over-releasing limiter, a wire rope, stop dogs and a speed control system. The vertical column is provided with a pair of side guide rails and rib plates distributed at equal intervals; the operating suspension cage is arranged on the side guide rails; a suspension cage body is hinged with a frame; an angling cylinder is respectively connected with the suspension cage body and the frame; the hoisting machine over-hoisting limiter and the hoisting machine over-releasing limiter are respectively installed in proper positions of lower parts of the top pulley yoke and the vertical column; the wire rope is connected with a hoisting frame; the hoisting frame adopts a rod piece, is installed at the upper part of the frame through a hinge pin and can rotate around the hinge pin; a spring connected with the frame is arranged at the lower end part of the hoisting frame; a throttle valve is arranged in the speed control system; and the stop dogs are symmetrically distributed in proper positions at lower parts of the side guide rails. The pile frame lifting operation mechanism ensures that the operating suspension cage is lifted and rotates along the side guide rails of the vertical column, is convenient to operate, stable and reliable, is convenient to mount and dismount, and guarantees the safety of operating personnel.

The invention belongs to the technical field of aluminum alloy plate heating equipment, and discloses a roller bar furnace for an aluminum alloy plate. The roller bar furnace comprises a furnace body,a liftable multi-layer material storage table and a feeding and discharging roller bar system, wherein the furnace body is used for heating and insulating the aluminum alloy plate, the liftable multi-layer material storage table is positioned in the furnace body and is used for containing the aluminum alloy plate, and the feeding and discharging roller bar system is used for conveying the aluminum alloy plate; the feeding and discharging roller bar system comprises a plurality of bars which are horizontally laid and are in chain transmission, and the bars transversely penetrate through the furnace body; the liftable multi-layer material storage table comprises a material storage frame and a lifting rod; and the material storage frame comprises a plurality of material storage layers for bearing aluminum alloy plates, two cross beams and a plurality of vertical beams, wherein the vertical beams are connected between the two cross beams so as to erect the material storage layer, and thecross beams are connected to the lifting rod so as to realize the lifting motion of the material storage frame. According to the roller bar furnace, automatic control can be realized, the quality of the plate surface is high, and the problems of scratch, deformation and the like of the conventional plate surface are solved.