333results about How to "Flexible and reliable" patented technology

A universal gateway that allows data to be transferred between one or more network protocols and one or more control protocols is described. The various protocols can coexist on the same physical network medium or on separate networks. The gateway also provides tunneling of network protocols through a selected protocol, and centralized control of network nodes. By using the gateway, end-users can mesh together traditionally standalone, incompatible, networks into a universally accessible, centrally administered, “super-network.” The gateway provides a centralized node database, support for legacy protocols, a rules engine, and an object-oriented class library interface. Configuration is simplified through automatic device discovery. The centralized node database is managed by an active server node. High reliability access to the centralized node database is enhanced by the system fault tolerance provided by standby server nodes. When used in connection with a power line network, the gateway provides the ability to distribute various types of data streams over the power line. Routing handlers provided by the gateway allow virtually any of the legacy data networking services such as TCP / IP to be routed over the power-line.

A flexible display device according to an embodiment of the invention comprises: a flexible screen, a shell and a bottom support part, wherein the shell comprises an accommodating part and a support seat; the bottom support part and the flexible screen are connected and overlapped; the bottom support part comprises a fixed support part and a rollable support part which are sequentially distributedalong the length direction of the flexible screen; and the flexible screen is in sliding fit with the support seat through the bottom support part. In the flexible display device according to the embodiment of the invention, the flexible screen can be glidingly arranged on the support seat through the bottom support part; the flexible screen and the rollable support part can synchronously stretchout of or retract in the accommodating part; the fixed support part always bears the flexible screen below partial flexible screen; and on the premise of making the flexible screen telescopic, the flatness of the flexible screen is improved, the damage of the flexible screen is reduced, and the display effect of the display screen is optimized.

A universal gateway that allows data to be transferred between one or more network protocols and one or more control protocols is described. The various protocols can coexist on the same physical network medium or on separate networks. The gateway also provides tunneling of network protocols through a selected protocol, and centralized control of network nodes. By using the gateway, end-users can mesh together traditionally standalone, incompatible, networks into a universally accessible, centrally administered, “super-network.” The gateway provides a centralized node database, support for legacy protocols, a rules engine, and an object-oriented class library interface. Configuration is simplified through automatic device discovery. The centralized node database is managed by an active server node. High reliability access to the centralized node database is enhanced by the system fault tolerance provided by standby server nodes. When used in connection with a power line network, the gateway provides the ability to distribute various types of data streams over the power line. Routing handlers provided by the gateway allow virtually any of the legacy data networking services such as TCP / IP to be routed over the power-line.

The invention relates to a method for realizing access grade management of movable terminal user. It is characterized in that: the movable terminal grades itself resources as document, function, etc, and grade manage its user; then building access database of access of each resource to be stored in memorizer; when user uses one resource, the system will find the access of user at said resource via said access database, to decide to execute relative document or transfer program module or not, to realize the access grade management on the user. The invention can effectively protect the privacy and commercial secret, without disturbing others.

Briefly, an embodiment of the present invention includes a portable flash memory drive with a simplified mechanism, based upon the resilient properties of the material used to create the parts, for reliable extension and retraction of the device's interface plug. The portable flash memory drive is comprised of a metal housing (or case), a printed circuit board (PCB) assembly, PCB support, PCB assembly end cap, an upper, and lower housing, and in some embodiments a fingerprint sensor and / or key ring assembly. The press / push switch mechanism is located on either the side of the portable flash memory device, or the top; and relies upon the resilient properties of the material used to create the metal housing or end cap, to create a smooth, locking mechanism for the extension or retraction of the interface (i.e., USB or firewire) plug. The switching / locking mechanism relies upon grooves or notches within the material of the upper and / or lower housing for tracking and locking, coupled with protrusion tabs on the sliding components of the end cap or metal housing. Alternatively, in some embodiments of the present invention, a fingerprint sensor is also extended or retracted contemporaneously with the interface plug, and allows the end user to secure and unlock the data contained, in whole or in part, therein.

Briefly, an embodiment of the present invention includes a portable flash memory drive with a simplified mechanism, based upon the resilient properties of the material used to create the parts, for reliable extension and retraction of the device's interface plug. The portable flash memory drive is comprised of a metal housing (or case), a printed circuit board (PCB) assembly, PCB support, PCB assembly end cap, an upper, and lower housing, and in some embodiments a fingerprint sensor and / or key ring assembly. The press / push switch mechanism is located on either the side of the portable flash memory device, or the top; and relies upon the resilient properties of the material used to create the metal housing or end cap, to create a smooth, locking mechanism for the extension or retraction of the interface (i.e., USB or firewire) plug. The switching / locking mechanism relies upon grooves or notches within the material of the upper and / or lower housing for tracking and locking, coupled with protrusion tabs on the sliding components of the end cap or metal housing. Alternatively, in some embodiments of the present invention, a fingerprint sensor is also extended or retracted contemporaneously with the interface plug, and allows the end user to secure and unlock the data contained, in whole or in part, therein.

The invention discloses a four-feet electromagnetic adsorption wall climbing robot. The four-feet electromagnetic adsorption wall climbing robot is formed by three parts, i.e. a chassis, walking legs and a foot adsorption apparatus. The walking leg comprises a multi-joint serial-connection mechanism connected onto the chassis and driving mechanisms installed at various joints, and a free end of the multi-joint serial-connection mechanism is connected with the foot adsorption apparatus; the foot adsorption apparatus comprises a plurality of disc mounting plates and electromagnetic suckers which are connected with the multi-joint serial-connection mechanism by virtue of passive ball hinges; and in the wall climbing process of the robot, the rotation action of each joint of the walking leg cooperates with the opening-closing state of an electromagnetic switch, so that the robot flexibly climbs a plane, a cylindrical surface and a spherical surface of any curvature and can flexibly realize the actions such as cornering and transverse movement. By adopting the four-feet electromagnetic adsorption wall climbing robot, the defects in the wall climbing process of a conventional wall climbing robot can be solved, the contradiction between the wall adsorption and the movement operation is well solved, the flexibility and applicability of the wall climbing robot in real engineering application are improved, and the popularization of the robot technology is facilitated.

The invention discloses an automatic pallet delivering device for a palletizing system, which comprises a pallet stock, a lifting mechanism, a bolt locating mechanism and a control part, wherein, the lifting mechanism comprises 1 to 4 double-stroke cylinders arranged at the bottom of the pallet stock and a lifting guide mechanism; the bolt locating mechanism comprises a horizontal bolt and a driving cylinder arranged on the symmetrical lateral surfaces of the pallet stock; and the double-stroke cylinder can be a single cylinder with two strokes or a combined cylinder formed by connecting two one-stroke cylinders in series. The automatic pallet delivering device which is suitable for automatically delivering the pallets in the palletizing system of production lines, warehouses and docks has the advantages of simple structure, convenient maintenance, low noise, no pollution and low energy consumption; and compared with the existing hydraulic and electric pallet delivering devices, the automatic pallet delivering device is obviously improved.

A system of transferring of three dimensional (3D) image data is described. A 3D source device (10) provides 3D display signal (56) for a display (13) via a high speed digital interface like HDMI. The 3D display signal comprises a sequence of frames. The sequence of frames comprises units, each unit corresponding to frames comprising video information intended to be composited and displayed as a 3D image. The 3D source device includes 3D transfer information comprising at least information about the video frames in the unit. The display detects the 3D transfer information, and generates the display control signals based in dependence on the 3D transfer information. The 3D transfer information in an additional info frame packet comprises information about the multiplexing scheme for multiplexing frames into the 3D display signal, the multiplexing scheme being selected of group of multiplexing schemes including frame alternating multiplexing, the frame alternating indicating said number of frames being sequentially arranged within said video data period.

The invention discloses a self-adaptive radar calibrating device for a sedan, which includes a base plate, wherein an upright column is vertically arranged on the base plate; a slideway is arranged on the upright column; a cross beam is connected with the slideway in a sliding way; the cross beam is connected with a driving mechanism; a vertical coordinate plate with a level is connected with the cross beam; and a laser hole is arranged in the coordinate plate. The self-adaptive radar calibrating device has a simple integral structure, is flexible and reliable to act, is convenient to operate, can correctly calibrate the radar in the ACC self-adaptive cruise control system.

The invention discloses a kind of pure water off-loading overflow valve consisting of a king pressure control valve and pure water electromagnet switching ball valve. The king pressure control valve consists of a king valve and a guide valve. The king valve plug having a secondary throttling cone valve structure with high pressure conduction is effective to restrain air muddy. The guide valve having cone valve structure with damping piston can increase motion damp and advance working stability of the overflow valve; constant pressure precision of the overflow valve is increased, if set constant liquid damp at the entrance of the guide valve. The electromagnet switching ball valve is generated by dry-type DC electromagnet, and is switched fast by mechanism of force amplification. The invention achieves zero leakage by sealing directly valve plug and valve cover, valve cover and valve body, improve static performance of the overflow valve by add valve port damper and achieve fast over-loading by electromagnets with larger thrust. The invention has characters of good versatility, integrated multifunction and being easy to standardize so as to fit to work under conditions of middle and high pressure water medium.

A system of transferring of three dimensional (3D) image data is described. A 3D source device (10) provides 3D display signal (56) for a display (13) via a high speed digital interface like HDMI. The 3D display signal has frames constituting the 3D image data according to a 3D video transfer format, in which format the frames comprise at least two different frame types. Each frame has a data structure for representing a sequence of digital image pixel data, and represents a partial 3D data structure. The 3D source device includes frame type synchronization indicators in the 3D display signal. The display detects the frame type synchronization indicators and frame types, and generates the display control signals based on synchronizing the partial 3D data structures in dependence of the frame type synchronization indicators.

The invention relates to the field of smart home, and particularly relates to a mobile phone location based smart home control method and system. A mobile phone locates a user in real time, so as to control intelligent home devices to turn on or off automatically in a long range. The user needs to trigger the mobile phone initiatively so as to control existing intelligent home devices to turn on and off in a long range, so that the existing intelligent home devices are not flexible in use and the user experience is poor. The invention provides a mobile phone location based smart home control method and system, aiming to solve the defects in the prior art. According to the method and system, user location information is collected for intelligent determination and analysis, so that a server can automatically turn on and off intelligent home devices in a long distance. Specifically, before the user arrives home, intelligent home devices are turned on automatically, or after the user leaves home, the intelligent home devices are turned off automatically. The user does not need to operate the mobile phone initiatively to perform remote controlling on the intelligent home devices, so that the method and system are flexible and reliable in use, and the user experience is improved notably.

An audio jack connector in accordance with a preferred embodiment of the present invention is provided. The audio jack connector at least comprises an insulative housing with at least a terminal contact, wherein the insulative housing defines an insert hole through which a plug inserted and contacted with the terminal contact. The terminal contact at least includes a base portion, a tail portion and an elastic portion. Wherein, the elastic portion includes a first cured portion extending from an upper edge of the base portion towards a center of the insert hole and a second cured portion extending slantly and sideward from a side edge of the first cured portion.

An automatic buffer unit for preventing collision between cars is composed of a bumper, a collision bar connected to the bumper, spring sleeving on said collision bar, the front and back shearing supporters for said collision bar, and an autocontrolled buffering mechanism consisting of micromotor, drive axle, shear-type balance rods, slide track, elastic rod and intelligent sensor. When an collision will take place, it can automatically ejected out to buffer the collision force.

The invention relates to an automatic hydraulic channeling machine. A frame part comprises a chassis, a sole plate, a universal wheel, machine legs, a shield and a panel; a hydraulic system comprises a cylinder base, a piston rod, a piston, a cylinder body, an adjusting nut, an adjusting rod and a ruler sleeve; a channeling mechanism comprises a main motor, a power head, a coupler, a spindle, a bearing, a knurl wheel, a pressing wheel guide shaft, a pressing wheel and a pressing wheel shaft; a guide wheel mechanism comprises a guide wheel shaft, a guide wheel, a sliding adjusting knob, an adjusting bolt, a guiding block, a hand wheel, a screw rod, a screw rod slide block and a guide wheel frame; an electric system comprises a pedal switch, an alternated current contactor, an intermediate relay, a breaker, a rectifier, a transformer, a time relay, a buzzer and an indicator lamp; a hydraulic control system comprises an oil tank, an oil pump motor, a gear pump, an oil-way block, a solenoid directional valve, a pressure relay, a flow control valve and an overflow valve; and a working bracket comprises a bracket base, a bracket cylinder sleeve, a bracket cylinder base, a bracket cylinder, a bracket piston rod, a bracket plate, a bracket lifting device, a quick connector and a high-pressure oil pipe.

The invention discloses a portable fully-automatic sedan shed, which consists of a base main body, rotary inclined framework type parallel folding brace rods, a front cross rod symmetrically distributed in a left and right direction, a piece of anti-radiation sun-shading cloth, a vertical curtain and a linkage control device, wherein a double-linkage upper sliding block, a left lower sliding block and a right lower sliding block which are arranged symmetrically, a lifting trundles, a foot lifting device, a double-worm-wheel speed reduction box and a universal permanent magnet suction disk bottom foot; four spring-type cloth winding rotary drums wind one end of the anti-radiation sun-shading cloth; the other end of the anti-radiation sun-shading cloth is clamped in a cloth clamping slot in the front cross rod; and the rotary inclined framework type parallel folding brace rods are connected between the sliding blocks and the front cross rod so as to form four block surfaces of the anti-radiation sun-shading shed. The shed is operated by a remote controller, so the anti-radiation sun-shading cloth can be unfolded simultaneously from the base to the front face, the rear face, the left face and the right face only within several seconds to form the anti-radiation sun-shading shed for a sedan with large shedding area; and the portable fully-automatic automobile shed has the advantages of compact and rational structure, flexible and reliable operation, convenience for use and carrying, and automation in folding and unfolding.

The invention relates to a zooming camera lens matched with a 3CCD (Charge-Coupled Device) camera. The zooming camera lens comprises a main lens cone and is characterized in that the main lens cone is provided with a front fixed lens group A having positive focal power, a zooming lens group B having negative focal power, a compensation lens group C having negative focal power and a rear fixed lens group D having positive focal power. The zooming camera lens can provide a photoelectric signal for a 1 / 2'' 3CCD colour camera and produce a clear colour video image to carry out real-time monitoring on far and near targets; the lens has high definition, low chromatic aberration, large rear cut-off distance and small structure length and function of presetting a focal length value.

The invention discloses a power assembly for an electric passenger car. A differential mechanism shell is arranged inside a differential shell, the differential mechanism shell is internally provided with a differential part, a left half shaft and a right half shaft which are connected with the differential part respectively extend left and right; one side of the differential shell is fixedly connected with a driving motor shell, and a transmission mechanism is arranged between a rotor shaft in the driving motor and the differential shell; a first bearing is arranged between the left part of the differential shell and a differential left cover of the differential shell, the right part of the differential shell is connected with a support disk by virtue of a second bearing, and a support shaft is fixedly connected between a differential right cover of the differential shell and the support disk; and the transmission mechanism comprises two outer toothed sleeves and an inner toothed sleeve as well as gears which are matched with the outer toothed sleeves and the inner toothed sleeve. The power assembly for the electric passenger car disclosed by the invention has the advantages of easiness for processing, easiness for assembling, high accuracy, no noise, smoothness and reliability in operation and long service life.

The invention relates to an automatic marine telescopic accommodation ladder. The automatic marine telescopic accommodation ladder comprises a two-level accommodation ladder body, a telescopic driving device, a hoisting winch and a control system. The two-level accommodation ladder body comprises an upper accommodation ladder body and a lower accommodation ladder body. The top end of the upper accommodation ladder body is hinged to a ship body upper platform through a shaft pin. The upper accommodation ladder body and the lower accommodation ladder body are connected through a sliding rail. The telescopic driving device is installed between the upper accommodation ladder body and the lower accommodation ladder body. After steering transition through a pulley, the hoisting winch is connected with the tail end of the lower accommodation ladder body. The control system comprises a shaft pin type tension sensor installed on the pulley, an angle detection sensor installed at the top end of the upper accommodation ladder body, and a programmable logic controller (PLC). Electrical signals are transmitted between the PLC and the tension sensor, between the PLC and the angle detection sensor, between the PLC and the telescopic driving device and between the PLC and the hoisting winch respectively.

A processing center hydraulic cam linkage reblading structure, comprising a drive wheel and a principal axis device arranged on a lathe body for driving a reblading arm to rotate. The inside of the principal axis device is provided with a spring and a push rod used for releasing knife; a push cylinder and a releasing knife cylinder are fixed on the lathe body; the inner cavity of the push cylinder is communicated with the inner cavity of the releasing knife cylinder by an oil pipe; the outer tip of a piston matched with the releasing knife cylinder is contacted with a push cam and a transmission pair is arranged between the push cam and the drive wheel; the outer end of a piston matched with the releasing knife cylinder is connected with an end shaft of a swaying rod and the other end of the swaying rod is axially connected with the principal axis device; the swaying rod leans on the tip of the push rod. When the drive wheel drives the reblading arm to rotate, the push rod can be pushed by the push cylinder and the releasing knife cylinder for releasing knife at the same time. The power comes from the drive wheel so as to achieve the linkage between the rotation of the reblading arm and the motion of the releasing knife. The structure provided by the present invention has the advantages of flexible and reliable motion, accurate interaction and simple overall structure.

A shift tilting-type wafer automatic transmission device overcomes the shortcomings that the prior art can not make complex movements in the narrow space of the manufacturing process; the wafer automatic transmission device comprises a machine frame, a feeding platform, a bellows body and an arm mechanism and is technically characterized in that a lower arm of the arm mechanism is connected with a grasping mechanism through a shift mechanism and a tilting mechanism which are assembled together; an assembly gear connecting rod transmission mechanism is used to drive the grasping mechanism to rotate around the axis; a grasping motor of the grasping mechanism drives a gripping claw to move back and forth; and a positioning mechanism on the grasping mechanism is provided with an adjustable positioning block. The device has rational design and stable transmission and running in the production process, as well as flexible and reliable movement; the device expands the scope of application and can realize bilateral shift and tilting of a wafer box while the device completes the automatic wafer transmission in the horizontal or vertical state of the wafer so as to fully realize the automatic transmission in a small space in which the center distance of the parallelly arranged process equipment is less than the center distance of the transmission equipment; moreover, the device can flexibly stop in the face of external interference to achieve the precisely controlled transmission effect.

The invention discloses a multi-mode running control method and device for a restaurant kitchen heat pump system and relates to control of a heating and cooling combined system, in particular to a control method and equipment of a heat pump integrated system applicable to hot water supply, cooling, dehumidifying, refrigeration and preservation of restaurant kitchens. The control device controls a multi-mode refrigerant circulating loop switching mechanism to change circulating path of refrigerant by detecting and comparing measured value and set value of running mode parameters, and controls the heat pump system of the restaurant kitchens to run according to the preset running modes; by the multi-mode running control method and device, automatic running of seven running modes including an in-situ water heating and refrigeration mode, a water heating mode, a refrigeration mode, an oil removal mode, a water heating, refrigeration and cooling mode, a hot air heating, refrigeration and cooling mode and a hot-water heat preservation, refrigeration and cooling mode are realized, control is flexible and convenient, environment friendly and energy saving, and running efficiency is high; the control device is a built-in microcontroller and installed with software function modules to realize multi-mode running control and has the advantages of compact structure, flexibility and reliability in functions and low manufacturing cost.

A folding arm hydraulic crane comprises a base; the base is provided with a swing mechanism for controlling the rotation of the crane; the upper part of the base is connected with a tower body through fasteners; the top of the tower body is hinged with a luffing lazy arm; the head of the luffing lazy arm is hinged to a folding arm; the folding lazy arm is provided with a hinge seat; the hinge seat is fixed with a lifting winch; and the lifting winch is connected with a hook through a wire rope. The folding arm hydraulic crane also includes a luffing oil cylinder; the luffing lazy arm is provided inside with a hinge support; one end of the luffing oil cylinder is connected with the tower body, and the other end of the luffing oil cylinder is connected with the hinge support; and a folding oil cylinder is located between the hinge support and the hinge seat. The folding lazy arm occupies small space, and is flexible and reliable for usage. During working, the folding lazy arm is expanded to lift distant goods; and the folding lazy arm is folded when the working stops, so as to greatly reduce the ship space needed by the crane.

The invention relates to a straightening track-dividing device for shrink film packaging bottles. The invention aims to automatically separate shrink film packaging bottles which shrink into a row, thereby further realizing automatic boxing. The device has the characteristics of novel and reasonable structure, flexible and reliable motion, accurate track dividing, and high speed for changing varieties, thereby improving the work efficiency and avoiding bottle clamping. The invention has the technical scheme that the straightening track-dividing device for the shrink film packaging bottles is provided with a bottle feed conveyer belt and a buffer conveyer belt which are sequentially arranged in the motion direction of the bottles and move towards the same direction. The invention is characterized in that both sides of the bottle feed conveyer belt are provided with a counting and clamping mechanism; a bottle-poking track-dividing mechanism is hung above the buffer conveyer belt; and the outer side of the bottle-poking track-dividing mechanism is provided with a bottle blocking mechanism. The invention is suitable for manufacturing supplies before boxing in the industries of food, medication, daily health products and the like, and belongs to the technical field of packaging.

The invention discloses a double-arm manipulator for industrial production. The double-arm manipulator is characterized by comprising a base, two horizontal pneumatic cylinders, two gripper pneumatic cylinders and grippers, wherein a stepping motor is arranged in the base; cylinder bodies of the two horizontal pneumatic cylinders are connected to and are arranged on the base; telescopic shafts of the two horizontal pneumatic cylinders are connected with the cylinder bodies of the gripper pneumatic cylinders respectively; and the telescopic shafts of the gripper pneumatic cylinders are connected with the grippers. The horizontal pneumatic cylinders are controlled to rotate by using the mandrel of the stepping motor in an upright post; the telescopic motion of two mechanical arms in a horizontal plane is realized by using the telescopic action of the telescopic shafts of the two horizontal pneumatic cylinders; and the opening and closing of the left gripper and the right gripper are realized by using the telescopic action of the telescopic shafts of the two gripper pneumatic cylinders. The double-arm manipulator has a simple structure and flexible and reliable motion and is convenient to use; the two arms are symmetrically arranged at both ends; a function that one end grips workpieces and the other end releases workpieces is realized; and the double-arm manipulator has the characteristics of high operating efficiency and wide application range and has wide application range in teaching demonstration and the industrial production.

A turnover wafer automatic transmitting device overcomes shortages that the prior art can not do complicated actions in a narrow space in a processing procedure and the like, which comprises a framework, a material loading platform, a wind chest body and an arm mechanism. The technical key includes that a lower arm of the arm mechanism is connected with a catching mechanism through a turnover mechanism, a fixing plate of the catching mechanism is hinged on a turnover base through a turnover shaft, a catching motor of the catching mechanism drives a catching link lever through a turbine worm to further drive a holding jaw to reciprocate along a catching sliding rail, and a locating mechanism on the catching mechanism can be equipped with an adjustable locating block. The turnover wafer automatic transmitting device is reasonable in design, stable in operation when transmitting during the processing procedure, and more flexible and reliable in action, expands application range, can enable a wafer cassette to turn over during the range of 0-90 degrees, can randomly set oblique angles to complete automatic transmitting of wafers in horizontal or perpendicular state, simultaneously also can be adaptable to doing more complicated actions in a narrow space of the process equipment, and can flexibly stop when encountering interference of outsides, thereby achieving transmitting effect of accurate control.

The invention relates to a bag clamping mechanism in an automatic bagging machine. For the bag clamping mechanism, bag clasping supports are welded on the lower end of a discharge hopper body; valve bearings are fixed on the bag clasping supports by bolts; a left valve and a right valve are respectively hinged on the valve bearings by bolts through a sliding bearing; the supports are arranged on the discharge hopper by bolts; cylinder mounting frames are arranged on the supports by bolts; cylinders are hinged on the cylinder mounting frames; cylinder connection pieces are connected on ends ofcylinder piston rods by threads; a center hole of a three-arm connection rod is sheathed on a rotating shaft; the rotating shaft is arranged on the discharge hopper body by bolts; the cylinder connection pieces are hinged with one end of the three-arm connection rod through a first pin shaft; and the other two ends of the three-arm connection rod are respectively connected with the left valve andthe right valve through a connection rod and a second pin shaft. The bag clamping mechanism has the advantages of simple, compact and reasonable structure, and is flexible and reliable in action, wherein, the left valve and the right valve work synchronously, thus being applicable to the automatic bagging equipment.

The invention relates to a square tool table pushing, positioning and clamping mechanism for a lathe. The square tool table pushing, positioning and clamping mechanism comprises a framework. Side cylinders and an intermediate cylinder which are connected with a hydraulic control device are vertically arranged on the framework. Side pressing plates are rotationally connected to the upper ends of piston rods matched with the side cylinders. An intermediate pressing plate is rotationally connected at the upper end of an intermediate piston rod matched with the intermediate cylinder. Support blocks for supporting a square tool table are fixed on two sides of the intermediate portion of the two adjacent piston rods on the framework, and a rest table is fixed on the left side of the same. A slider is arranged on the framework, and an insert for being inserted into an inner hole of the square tool table is fixed above the slider. A left auxiliary support is arranged at the left end of the framework, and a right auxiliary support is arranged at the right end. A pushing mechanism pushing the square tool table to the rest table is arranged on the framework. The square tool table pushing, positioning and clamping mechanism is simple in integral structure, flexible and reliable to act, small in occupation space, low in manufacturing cost, firm to clamp and good in stability.

The invention discloses a kind of pure water electromagnetic ball valve. It includes electromagnet, mechanism of force amplification, ball valve core in the hole of valve body, rest spring, valve cap and push bar. On the upper of valve body there is water inlet, water outlet and back water gap connected by channel; through leaving and covering of ceramic ball and valve seat, forming open and closed circuit to change the direction of fluid flow. The ceramic ball is generated by driving force of the dry-type DC electromagnet and spring force of the reset spring, and transmitted by the push bar. The proper layout of flow channel balance hydraulic pressure of the push bar and the ceramic ball. The invention achieves zero leakage by sealing directly valve plug and valve cover, valve cover and valve body, the core of ceramic ball and valve seat; improves static performance of the electromagnetic ball valve by add valve port dampers; switch fast by electromagnets with larger thrust and mechanism of force amplification. This valve is versatile and fit to work under conditions of middle and high pressure water medium.