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107results about How to "Keep closed" patented technology

Pressure plate clamping mechanism

The invention discloses a pressure plate clamping mechanism. The pressure plate clamping mechanism comprises a pressure plate and a force application rod penetrating the pressure plate, one end of the pressure plate is supported on a cushion block, the other end of the pressure plate is used for compressing a workpiece, the cushion block comprises a support part and an abdication part, the top surface of the support part is in contact with the pressure plate, the abdication part is provided with an abdication hole for enabling the force application rod to penetrate, and a gap is arranged between the top surface of the abdication part and the pressure plate. The pressure plate clamping mechanism disclosed by the invention can achieve the purpose of expanding the range of applications of ordinary clamping by reducing the spatial size of the cushion block. The force at the fulcrum of the cushion block can be balanced at the lower part of the whole cushion block by ingenious force conversion. Simultaneously, the pressure plate clamping mechanism can ensue that the force at the fulcrum can be close to the workpiece as far as possible and ensure the reasonable equilibrium of a lever. Compared with the ordinary clamping, the stress situation of theoretical calculation is the same. The pressure plate clamping mechanism disclosed by the invention has the characteristics of simple and compact structure, and stability and reliability in operation.
Owner:华域视觉科技(长沙)有限公司

Embedded vacuum contactor

InactiveCN107331572AReduce volumePrevention and control of power failureHigh-tension/heavy-dress switchesAir-break switchesEpoxyElectricity
The invention relates to the electrical technical field, and especially relates to an embedded vacuum contactor with a small size; the embedded vacuum contactor comprises a vacuum bubble and an electromagnetic mechanism; the vacuum bubble top is connected with an upper soft connection, and arranged on the vacuum bubble mounting rack; the electromagnetic mechanism comprises an insulation coil, and a permanent magnet, a movable core and a movable rod arranged in the insulation coil; the movable rod penetrates the movable core and the permanent magnet, and is connected with the vacuum bubble bottom through a lower soft connection; the movable core comprises an opening spring and a closing spring arranged from top to bottom in sequence; the opening spring and the closing spring are respectively sleeved on the movable rod; an external magnetic steel housing is arranged outside the insulation coil. The electromagnetic mechanism and the vacuum bubble of the embedded high voltage contactor are directly connected, thus greatly reducing the vacuum contactor volume; the coil is casted by an epoxy resin, and the outgoing line outputs the high voltage cable connection manipulation electricity, thus isolating low voltage manipulation electricity from a high voltage environment; the permanent magnet can be attached to the movable core once closed, thus keeping the closing state, and preventing tripping caused by manipulation electricity drop out.
Owner:BIG PAWER ELECTRICAL TECH XIANGYANG

Rolling device for plastic thin film

InactiveCN109335773AAvoid stickingAdhesion avoidance effectWebs handlingCold airMotor drive
The invention discloses a rolling device for a plastic thin film. The rolling device comprises a rolling cylinder. Clamping plates are arranged at the two ends of the rolling cylinder. Fixing bases are arranged on the outer sides of the clamping plates. A clamping groove is formed in each fixing base. A ball plate is arranged on the outer wall of the end portion, close to the rolling cylinder, ofeach fixing base. A rotating shaft is fixedly arranged on the outer side of each fixing base. A drive mechanism is arranged on the bottom of the rotating shaft on one side of each fixing base. A bearing is arranged on the end portion of each rotating shaft. A supporting table is arranged on the outer side of each bearing. A first air cylinder is fixedly arranged on the top of each supporting table. A second air cylinder is fixedly arranged on the front side of each supporting table. A control box is fixedly arranged on the end portion of each first air cylinder, and a control box is fixedly arranged on the end portion of each second air cylinder. A cold air pipe and an ion stick are arranged on the inner side of each control box. According to the rolling device, a forward and backward motor drives the cold air pipes to rotate, the cold air pipes and the plastic thin film are adjusted to be arranged in an acute angle manner, the large area of the plastic thin film is cooled through wind, adhesion caused after rolling is avoided, in additional, the ion sticks can remove static electricity on the plastic thin film, and the influence on rolling and caused adhesion are avoided.
Owner:周玉兰

Oil well wellhead water content automatic test device and test method thereof

PendingCN108562723ATimely detection of fluctuations in productionSolve the problem that the water content data can only be obtained during transportation to the central laboratory for testing and other processesMaterial testing goodsMeasuring instrumentOil field
The invention discloses an oil well wellhead water content automatic test device and a test method thereof. By means of the method, the water content of an oil-water mixture can be conveniently and rapidly measured at a wellhead to achieve fine monitoring of yield fluctuation of oil wells of an oil field and rapid monitoring of the water content of the oil wells. The device comprises an oil storage box, a floating ball plug, a water content measuring instrument, a back flowing tube and a one-way valve; the oil storage box is communicated with an oil well oil delivery manifold through a formedliquid inlet, and the oil storage box is located below the oil well oil delivery manifold; the input end of the water content measuring instrument is communicated with the oil storage box, and the output end is connected with the back flowing tube; a power device is arranged in the water content measuring instrument, and the power device is used for delivering the liquid in an oil storage tank tothe oil well oil delivery manifold through the back flowing tube; the floating ball plug is arranged in the oil storage box, and the density of the floating ball plug is smaller than oil; the one-wayvalve is arranged between the back flowing tube and the oil well oil delivery manifold, and the back flowing tube is communicated with the oil well oil delivery manifold in one direction from the backflowing tube to the oil well oil delivery manifold by means of the one-way valve.
Owner:PETROCHINA CO LTD
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