3429 results about "Telescopic cylinder" patented technology

The invention discloses a device for improving water quality of laminated mixed oxygenated water. The device comprises an elevating cylinder, an aerating chamber, a gas storing chamber, an air releasing pipe, a guide plate, a perforated plate, a micro-pore aerator, a powerless automatic switching device and an anchoring pier, wherein the elevating cylinder is vertically arranged in water; the aerating chamber and the gas storing chamber are formed at the middle position of a reservoir; the micro-pore aerator is arranged at a position close to the bottom of the reservoir; a full-layer mixed oxygenation function and an isothermal layer mixed oxygenation function are integrated organically; and a telescopic cylinder for adjusting the height of the device is arranged between the aerating chamber and the micro-pore aerator, so that the stability of the entire device is improved. Through improvements on a multifunctional water pumping aerator, full-layer mixed oxygenation and isothermal layer mixed oxygenation are performed respectively by using the device for improving water quality of laminated mixed oxygenated water according to the water quality improving requirement, so that the problem of water quality pollution in the reservoir can be solved at lower energy consumption, and the aim of organically unifying two functions, the water quality improving benefit and the economic benefit is fulfilled.

The invention discloses a two-sided paint spraying device used for building timber spray finishing. The two-sided paint spraying device used for building timber spray finishing comprises a base, the two sides of the upper end of the base are connected with supporting frames, the upper ends of the supporting frames are connected with top plates, and the middles of the top plates are connected with a drive box. The two sides of the lower end of the base are connected with supporting legs, the right end of the left supporting leg is connected with a drive motor, the right end of the drive motor is connected with a drive shaft, and the right end of the drive shaft is connected with a driving gear. The upper end of the driving gear is meshed with a driven gear, the middle of the driven gear is connected with a transmission shaft, the two ends of the transmission shaft are connected with transmission belt wheels, the upper end of each transmission belt wheel is connected with a turnover belt wheel through a belt, and the middle of each transmission belt wheel is connected with a turnover shaft. The inner end of each turnover shaft is connected with a telescopic cylinder, the inner side of each telescopic cylinder is connected with a telescopic shaft, each telescopic shaft is connected with a U-shaped plate, and the upper end and the lower end of each U-shaped plate are separately connected with a clamping device. The two-sided paint spraying device used for building timber spray finishing realizes two-sided spray finishing of building timber; a horizontal paint spraying mode is adopted, and compared with a vertical paint spraying mode, evenness of timber paint spraying is increased.

The invention discloses an end effector of a ball-like fruit picking robot. The end effector comprises a rotating machine assembly, a telescopic cylinder assembly and an arc-shaped finger cutting assembly. The end effector has the following advantages: a rotating machine is utilized to drive four arc-shaped blades to cut the fruit stem in any position between the four arc-shaped blades in a rotating manner via a coupling shaft assembly, thus omitting detection of the position of the fruit stem; a single-rod double-action cylinder drives four arc-shaped fingers to unfold and fold by way of extension and retraction of a piston rod; the space formed when the four arc-shaped fingers are folded is larger than the three-dimensional space of the fruits; the fingers are not contacted with the fruits during picking, thus ensuring that the fingers can rotate relative to the fruits, providing conditions for the arc-shaped blades to cut the fruit stems in a rotating manner and dispensing with complex pressure control for clamping the fruits; and the end effector has a reliable picking mode, low action control difficulty, low cost and strong universality.

The invention discloses a rotary wall board paint spraying bracket. The rotary wall board paint spraying bracket comprises a door fixture, wherein a bearing platform is arranged below a cross beam of the door fixture; a rectangular slideway 1 is machined on the lower surface of the cross beam of the door fixture; a slide rail 1 is arranged inside the rectangular slideway 1; an electric trolley 1 is arranged on the slide rail 1; a telescopic cylinder 1 with a downward telescopic end is arranged on the lower surface of the electric trolley 1; a mounting box is arranged at the telescopic end of the telescopic cylinder 1; a circular through hole is formed in the center of the lower surface of the mounting box; a spray head is embedded into the circular through hole; a controller is arranged on the front surface of the bearing platform; a storage battery is arranged inside the controller; the storage battery is electrically connected with the controller; and the controller is electrically connected with the electric trolley 1, the telescopic cylinder 1, electric trolleys 2, telescopic cylinders 2, rotary motors and clamping claws. The rotary wall board paint spraying bracket has the beneficial effects of simple operation, convenience in use, automatic rotary paint spraying treatment, high working efficiency, high convenience and practicality.

The invention discloses a synchronous dust extraction steel tube piece inner wall polishing device which comprises an outer box and a base. A transverse support is arranged on the right side of the top of the base, a second stretchable cylinder is arranged on the left side of the transverse support, a rotary barrel is rotationally arranged on a vertical support, an eccentric gear is installed at the left end of the rotary barrel, a fixing rod is installed on the left side of the eccentric gear, and a polishing rod is installed at the left end of the fixing rod; and a driven belt wheel on the rotary barrel is connected with a driving belt wheel through a triangular belt, the driving belt wheel is fixedly installed on an output shaft of a driving motor, and the lower end of a piston rod of a first stretchable cylinder on the left side of the outer box and the upper end of a piston rod of a third stretchable cylinder are provided with an upper clamping plate and a lower clamping plate corresponding. By means of the synchronous dust extraction steel tube piece inner wall polishing device, the steel tube polishing time is greatly saved, steel tube polishing is more sufficient, the steel tube polishing quality and working efficiency are improved, synchronous dust extraction during polishing is achieved, the clean and tidy working environment is kept, and the health of workers is facilitated.

The present invention provides parallel, cable based robotic manipulators, for use in different applications such as ultra high-speed robots or positioning devices with between three to six degrees of freedom. The manipulators provide more options for the number of degrees of freedom and also more simplicity compared to the current cable-based robots. The general structure of these manipulators includes a base platform, a moving platform or end effector, an extensible or telescoping central post connecting the base to moving platform to apply a pushing force to the platforms. The central post can apply the force by an actuator (active), or spring or air pressure (passive) using telescoping cylinders. The robotic manipulators use a combination of active and passive tensile (cable) members, and collapsible and rigid links to maximize the benefits of both pure cable and conventional parallel mechanisms. Different embodiments of the robotic manipulators use either active cables only, passive cables only, or combinations of active and passive cables. An active cable is one whose length is varied by means of a winch. A passive cable is one whose length is constant and which is used to provide a mechanical constraint. These mechanisms reduce the moving inertia significantly to enhance the operational speed of the robots. They also provide a simpler, more cost effective way to manufacture parallel mechanisms for use in robotic applications.

A telescopic ladder apparatus can be deployed from a closed receptacle on the stern portion of a boat. The ladder is formed with telescopic side rails supporting transverse treads that can collapse into a stored position in which the treads are placed adjacent one another. The side rails are mounted to a slide mechanism that is mounted in the receptacle for sliding movement relative to the boat. The slide mechanism supports the side rails for a linear sliding movement to permit the deployment of the ladder externally of the receptacle to be telescopically extended toward the water. The side rails are pivotable downwardly to position the ladder into a generally vertical deployed position from the generally horizontal stored position. The receptacle housing the telescopic ladder and slide mechanism is opened for access to the ladder through a generally vertically oriented door that provides a clean aesthetic appearance for the boat.

The invention discloses a loading and unloading manipulator which is characterized by comprising a rotary workpiece module, a loading module, a clamping module, an unloading module and a motion control system module, wherein the rotary workpiece module mainly comprises a bracket, a telescopic swinging cylinder, a connecting plate, a rotary motion device, a first linear slide rail and a rotary paw; the rotation of the telescopic swinging cylinder drives the rotary paw to rotate; the expansion and the contraction of the telescopic swinging cylinder drives the rotary paw to expand and contract along the first linear slide rail; the loading module mainly comprises a loading paw device, a tiny moving mechanism, a movable large cylinder and a second slide rail; the expansion and the contraction of the movable large cylinder drives the loading paw device to move forwards and backwards along an axis X under the driving of the tiny moving mechanism; the clamping module comprises two cylinders which are perpendicularly connected with each other; the vertical cylinder expands and contracts in an axis Z direction, and the horizontal cylinder expands and contracts in an axis Y direction, so as to clamp and release a workpiece; and the unloading module comprises an unloading pusher mechanism, an inclined plane delivery mechanism and an unloading conveyor belt.

A suspension for the boom of a loading vehicle includes a hydraulic cylinder for raising and lowering, or for extending and retracting (in the case of a telescopic cylinder), a boom. A direction control valve is provided for selectively routing hydraulic oil to and from at least a head-end chamber of the cylinder. A position sensor senses the position of the hydraulic piston rod, at the start of operation, and sends a sends a target signal representing this beginning position to a control unit which determines the difference between the target signal and a signal representing a current position of the piston rod. When this difference equals a preset difference threshold, a pressure-limiting unit, in the form of a valve or choke, is activated so as to control fluid flow to and from the head-end chamber so as to return the piston rod to its initial position which generated the target signal. Different embodiments have different valve component arrangements for influencing the reaction time of the suspension and/or for adapting the circuitry for use with single-acting, double-acting or telescopic boom cylinders.

The invention discloses a pushing and cutting device. The pushing and cutting device comprises a worktable, wherein the interior of the worktable is a cavity structure; a group of loading plates parallel to each other are arranged on the upper surface of the worktable; an ejection plate is arranged at one end of each loading plate; a linear motor with a telescopic end in a horizontal direction is arranged on each ejection plate; an ejection block is arranged at the telescopic end of each linear motor; an L-shaped bracket is arranged on the upper surface of each ejection block; a micro telescopic cylinder with a downward telescopic end is arranged on the lower surface of each L-shaped bracket; a controller is arranged on one side surface of the worktable; a power interface is located under the controller and is electrically connected to the controller; the controller is electrically connected to the linear motors, the micro telescopic cylinders, an electric trolley, a telescopic cylinder and a rotating motor respectively. The pushing and cutting device has the advantages that the device is capable of automatically pushing and cutting, the personal safety of workers is protected, the device is capable of uniformly cutting, and the device is convenient and practical.

The invention provides an explosive-handling robot which comprises a base plate, a detecting unit, a box, a hydraulic mechanical arm and a manipulator. A swinging arm type crawler mechanism is adopted for the base plate so that the explosive-handling robot can run fast on the flat road and surmount various barriers, and can be particularly suitable for moving in dangerous and complicated road surface environments. A high-definition camera detection device is installed on the box, and a camera can identify explosives. In addition, a rotation device is installed on the box so that the mechanical arm can rotate by any angle. The hydraulic mechanical arm is adopted as the main body of the mechanical arm body and provided with a hydraulic drive pitching cylinder, two hydraulic driven pitching cylinders and a hydraulic drive telescopic cylinder in total. The manipulator is installed at the tail end of the mechanical arm, and used for clamping explosives through driving of a servo motor, transmission of a lead screw and adoption of a four-rod mechanism. The explosive-handling robot has the characteristics of rapid moving, accurate grabbing, simple structure and good performance.

The invention discloses a device with multiple sections of telescopic jibs, comprising a fringe connection part and a bolt connection part; the fringe connection part comprises at least two sections of telescopic jibs located in the inside and connected with a travel cable through a turning wheel; the bolt connection part comprises at least one section of telescopic jib located at the outside and connected with a cylinder pin through a jib pin and a basic jib (211); a cylinder tube (281) of a telescopic cylinder (28) is connected with the outmost section of telescopic jib of the fringe connection part. Therefore, in the extending processing of the telescopic jibs, each section of telescopic jib of the fringe connection part extends synchronously, which increases the extending speed of the device with multiple sections of telescopic jibs as well as the working efficiency; at the same time, because the fringe connection part is connected with the bolt connection part by the jib pin (262), and the axial force between the telescopic jibs is transmitted through the jib pin, the stress condition of the telescopic cylinder (28) is improved, the size is reduced properly so as to reduce the cost. The invention further discloses an automobile crane comprising the device with multiple sections of telescopic jibs.

A lens barrel including a telescopic cylinder configured to be accommodated within a fixed cylinder; a plurality of lens groups configured to be retained in the telescopic cylinder; a lens driving device configured to drive the plurality of lens groups along a longitudinal axis of the telescopic cylinder between a collapsed position in which at least one portion of the plurality of lens groups is stored in the fixed cylinder and an extended position in which the at least one portion of the plurality of lens groups is extended out of the fixed cylinder; and a retractable lens group configured to be retracted into the fixed cylinder through an opening in a wall of the fixed cylinder when the telescopic cylinder is in the extended position.

The invention discloses a superlift device, which is used for a telescopic crane, and comprises at least one rotary support, a derricking oil cylinder, a first tension device, and a second tension device, wherein a fixed end of the rotary support is pivoted with a basic boom of the telescopic crane; the derricking oil cylinder is arranged between the rotary support and the basic boom; the first tension device is arranged between a movable end of the rotary support and the outer end of any telescopic boom of the telescopic crane; and the second tension device is arranged between the movable end of the rotary support and the root of the basic boom. The first tension device applies a first tension force between the telescopic boom and the movable end of the rotary support, and the component force of the first tension force can balance the partial component force of a heavy object in a sheared direction of a main boom, so the stress state of the main boom is obviously improved, the deflection of the main boom is remarkably reduced under equal loading conditions, and performances of the telescopic crane such as total boom length, lifting height and lifting weight are remarkably promoted.

The invention discloses a stacking manipulator for machine room floor production. The stacking manipulator comprises a base, a stand column, a revolving mechanism, a lifting mechanism and a cross beam; the stand column is vertically mounted on the base through the revolving mechanism; the tail end of the cross beam is perpendicularly mounted in a chute of the stand column through the lifting mechanism; a telescopic cylinder is fixedly mounted at the bottom of the front end of the cross beam; and the tail end of an extension rod of the telescopic cylinder is connected with a four-jaw manipulator controlled to open or close by the telescopic cylinder. The stacking manipulator is simple in structure and reliable and stable in stacking, saves the labor force, has no adhesive effect destruction risk in the stacking process, and can realize double-station stacking under the condition of not increasing any hardware to supply enough time for evacuation of stacked materials.

The invention discloses a novel quick digging and anchoring integrated machine for a rectangular coal roadway, which comprises a heading machine, a temporary support system, an anchoring system, a conveying system and a dust removing system, and also comprises a support system, wherein a sealing device is arranged between the head of the heading machine and the front of the support system; the sealing device comprises a main body plate, a movable sealing plate and left and right movable sealing plates; support hydraulic cylinders are arranged on the main body plate and an upper movable sealing plate bracket; support hydraulic cylinders are arranged on the main body plate and left and right movable sealing plate brackets as well; meanwhile, an upper movable sealing plate, the left and right movable sealing plates are provided with flexible sealing belts; the front end of a dust removing pipeline of the dust removing system is installed on the main body plate of the sealing device; and the dust removing pipeline is communicated with the space in the front part of the sealing device. The novel quick digging and anchoring integrated machine for the rectangular coal roadway, provided by the invention, employs a novel telescopic cylinder to cut and mold the width of a roadway in one step, therefore, the high efficiency is achieved, and in addition, the damage to a base plate due to repeated displacement is avoided; through cooperation of adjusting oil cylinders with flexible sealing, a top plate and lateral walls are very adaptive, so that dust is prevented from rushing into a rear working space; and meanwhile, a working environment is improved.

The invention discloses medical cleaning equipment which comprises a cleaning tank, a steam tank and a drying groove arranged sequentially, wherein a spray pipeline is arranged at the periphery of the cleaning tank; spray heads are arranged on the spray pipe at intervals; a steam pipeline is arranged in the steam tank; steam nozzles are formed in the steam pipeline; heating assemblies and air blowers are arranged in the drying tank; an operation rail is arranged right above the cleaning tank, the steam tank and the drying tank; one end part of the operation rail stretches downwards to form a fixed plate; a telescopic air cylinder is mounted on the fixed plate; the operation rail is slidingly connected with a sliding block; and a lifting air cylinder is mounted on the sliding block. The medical cleaning equipment further comprises a controller used for controlling the telescopic air cylinder and the lifting air cylinder. The operation rail, the sliding block, the telescopic air cylinder, the lifting air cylinder and a clamping jaw are arranged above the cleaning tank, the steam tank and the drying tank; a medical appliance sequentially passes the cleaning tank, the steam tank and the drying tank, and is completely cleaned. Accordingly, the automation of cleaning is realized, the cleaning effect is good, and a good foundation is provided for a subsequent process.

The invention relates to a safety brake system. The safety brake system comprises a power source and at least one resistance mechanism. The resistance mechanism comprises a telescopic supporting mechanism and a friction assembly. Each telescopic supporting mechanism comprises a first telescopic cylinder hinged to and arranged on a connecting piece, wherein the lower end of a telescopic rod of the first telescopic cylinder is hinged to an installation plate of the friction assembly, a draw and pull rod is hinged to the upper surface of a friction plate, the upper end of the draw and pull rod is hinged to and arranged on the connecting piece, and a triangular structure is defined by the draw and pull rod, the telescopic rod of the first telescopic cylinder and the connecting piece on the upper portion. The invention further relates to a motor vehicle. The safety brake system is adopted for the motor vehicle and arranged on a chassis of the motor vehicle. Under the condition that brake failure happens to the motor vehicle or the vehicle is out of control or a vehicle-mounted brake system can not meet the requirement for braking, strong speed reduction braking can be rapidly achieved by starting the safety brake system, and therefore the brake distance can be shortened; in addition, the safety brake system has the advantages of being stable in traveling, safe, capable of preventing thievery, beneficial to motor vehicle overhauling, capable of protecting the chassis, and the like.

The invention discloses a batch feeding device for pipe fittings, which relates to the technical field of steel pipe processing equipment, and comprises a workbench and two slide rails arranged along the length direction of the workbench; the two slide rails are provided with sliding sliders, And the first telescopic cylinder that drives the slide block to slide is hingedly arranged on the workbench; vertical screw rods are installed on the two slide blocks, and a lower fixing block is fixedly connected between the two screw rods, and a lower fixing block is set on the lower fixing block. There are a plurality of lower compression grooves; the upper ends of the two screws are provided with movable sleeves, and an upper fixed block is connected between the two movable sleeves, and the lower surface of the upper fixed block is provided with a plurality of lower compression grooves Corresponding multiple upper pressing grooves; the two screw rods are respectively sleeved with compression springs, the upper ends of the compression springs are pressed against the movable sleeve, and the lower ends of the telescopic springs are pressed against the sliding block. The invention not only facilitates the feeding of multiple steel pipes, but also makes the feeding lengths of the multiple steel pipes consistent, so that the cutting lengths of the multiple steel pipes are consistent during cutting.

The invention discloses a pipe tool transportation mechanical arm, and belongs to the technical field of petroleum drill and exploitation equipment machinery. The pipe tool transportation mechanical arm comprises a guide rail, an upper mechanical arm and a lower mechanical arm, wherein the guide rail is installed on a girder of a tube draw bench, and the upper mechanical arm and the lower mechanical arm are installed on the guide rail. According to the pipe tool transportation mechanical arm, clamping pincers and righting pincers keep moving along the horizontal direction from beginning to end, displacement of a stand pipe is kept changeless in the vertical direction before and after a person grasps the stand pipe, and the person does not need to additionally regulate the vertical height of the stand pipe during the transportation process of the stand pipe. Furthermore, due to the fact that the upper mechanical arm and the lower mechanical arm adopt the same working principle, the person only needs to use the same control curve in control software for a first telescopic oil cylinder and a second telescopic oil cylinder under the condition that the first telescopic oil cylinder and the second telescopic oil cylinder are of the same specification, and then the purpose of respectively keeping stretching velocity and displacement of the upper mechanical arm and the lower mechanical arm synchronous is achieved. A control system of the pipe tool transportation mechanical arm is simple in programming and control, easy to implement and simple to debug, and therefore the pipe tool transportation mechanical arm is low in cost and simple to maintain.

The invention relates to the technical field of aluminum substrate production and machining, in particular to integrated equipment for cutting, drilling and polishing an aluminum substrate. The integrated equipment comprises a feeding assembly, a cutting assembly, a polishing assembly and a drilling assembly, wherein the polishing assembly comprises a turntable, a rectangular table, two end polishing mechanisms and two edge polishing mechanisms; the feeding assembly comprises a first fixed clamp and a first movable clamp; the arrangement directions among the turntable and the two end polishingmechanisms and among the rectangular table and the two edge polishing mechanisms are perpendicular to the arrangement direction among the first fixed clamp and the first movable clamp; the cutting assembly comprises a circular saw blade and a moving mechanism; the circular saw blade is fixedly connected with the moving mechanism through a telescopic cylinder; the drilling assembly comprises a discharging mechanism and a drilling mechanism; and the first fixed clamp, the first movable clamp, the turntable and the rectangular table are sequentially arranged in a straight line. According to theintegrated equipment, the problem that cutting, grinding and drilling cannot be completed at a time when the aluminum substrate is machined, the time is saved, and the manpower and the cost are reduced.

The invention discloses a multi-degree-of-freedom automatically-controlled manipulator. The multi-degree-of-freedom automatically-controlled manipulator comprises an installation plate, a U-shaped support, a horizontal indexing rotary disc, a telescopic cylinder, a latching mechanism, a support arm rod, a vertical rotary disc, an angle adjustment disc, a mechanical arm, a fixed plate, a manipulator cylinder, a manipulator and a PLC. The multi-degree-of-freedom automatically-controlled manipulator disclosed by the invention is controlled by virtue of the PLC, thus the control flexibility and rapidity of the manipulator are improved; multi-angle rotation of the manipulator is realized through the horizontal indexing rotary disc and the vertical rotary disc; meanwhile, grabbing of the manipulator at any angle is realized through the arrangement of the angle adjustment disc; meanwhile, an indexing need in particular cases is ensured through the arrangement of latching mechanism for the horizontal indexing rotary disc; and in addition, a workpiece is grabbed and located on the manipulator disclosed by the invention by virtue of tension springs and location balls, thus the location accuracy of the workpiece is improved, and the case of damage to an object due to a too high grabbing force can be effectively prevented through the arrangement of pressure sensors.

The invention discloses an automatic sample loading mechanical arm for a three-dimensional space of a tensile testing machine. A transverse moving electric cylinder of the mechanical arm is arranged on a transverse supporting plate, a vertical supporting plate is perpendicularly arranged on a sliding block of the transverse moving electric cylinder, and a lifting electric cylinder and a lifting guide rail are arranged on the vertical supporting plate. A lifting supporting plate is arranged on the lifting guide rail and moves along the lifting guide rail. A telescopic air cylinder is arranged on the side face of the lifting supporting plate, an installation plate is arranged on the end face of the telescopic air cylinder, and a rotating air cylinder and a clamping air cylinder are arranged on the front end face and the rear end face of the installation plate respectively. A clamping frame is arranged at the front end of the clamping air cylinder, two clamping arms of a clamp are hinged to the front end of the clamping frame, a pull rod is arranged in the clamping frame and is hinged to the rear ends of the two clamping arms, the clamping air cylinder drives the pull rod to move back and forth, and the rotating air cylinder drives the clamping air cylinder and the clamping frame to rotate. The mechanical arm is suitable for the whole process of a sample test of the tensile testing machine, manual operation is not needed in sample sending of the tensile testing machine, the sample sending accuracy is effectively improved, and the repeated accuracy of the sample test is ensured.

The invention relates to an electric cylinder with a buffer. The electric cylinder is composed of a lead screw integrated with a motor rotor, an angular contact ball bearing, a first annular thrust cushion block, a second annular thrust cushion block, a long bolt, an electric cylinder upper barrel, a motor stator, a spline, an encoder, an end cover, a thread ball, a nut barrel, a check ring, an electric cylinder body, a piston ring, a buffer inner barrel, a buffer outer barrel, a sealing washer, a baffle ring, an annular cushion block, a rigid spring and a bracket. The motor rotor is integrated with the lead screw, the lead screw serves as the motor stator end to be supported to the interior of the electric cylinder upper barrel through the angular contact ball bearing, and extends into the electric cylinder upper barrel to be matched with the motor stator to form a motor, and the first annular thrust cushion block and the second annular thrust cushion block are installed at the two ends of the motor stator respectively; the threaded end of the lead screw and the nut barrel form an electric cylinder transmission device through the thread ball, and the electric cylinder transmission device is contained in the nut barrel and the electric cylinder body. The instant impact load effect of the electric cylinder in the starting process, the impact process and the like is reduced, and the service life of the electric cylinder is effectively prolonged.

The invention relates to a high-efficiency vehicular hedge clipper with two clipping faces. The high-efficiency vehicular hedge clipper with the two clipping faces is characterized in that a carrying car 1 is provided with a support II and a turn table, the support II is connected with a fixed arm II, the fixed arm II is connected with a movable arm II in a sleeved mode, the movable arm II is connected with a connecting block II, the connecting block II is connected with a vertical face tool rest, a lifting cylinder II is connected with a carrying car through a base II, the other end of the lifting cylinder II is connected with the fixed arm II in a hinged mode, one end of a telescopic cylinder II is connected with the fixed arm II, the other end of the telescopic cylinder II is connected with the movable arm II, a support I is fixedly arranged in the turn table, a support movable arm is connected in the support I in a sleeved mode, one end of a lifting cylinder I is fixedly connected with the support I, the other end of the lifting cylinder I is connected with the support movable arm, the support movable arm is connected with the fixed arm I, one end of the fixed arm I is connected with a balancing weight, the other end of the fixed arm I is connected with the movable arm I in a sleeved mode, one end of a telescopic cylinder I is connected with the fixed arm I, the other end of the telescopic cylinder I is connected with the movable arm I, one end of a connecting block I is connected with the movable arm I, and the other end of the connecting block I is connected with a horizontal face tool rest. Due to the fact that the high-efficiency vehicular hedge clipper with the two clipping faces has two clipping faces, clipping operation of two directions can be carried out at the same time, and working efficiency is high.

The invention discloses a hydraulic power-assisted electric cylinder and a control method. The electric cylinder comprises a cylinder body, a driving motor, a lead screw, a lead screw nut, a piston, a piston rod and two hydraulic oil holes, wherein the two oil holes in the cylinder body are filled with controlled hydraulic oil as hydraulic power assistance of the electric cylinder. The control method of the hydraulic power-assisted electric cylinder comprises the steps that a controller detects current of the driving motor and adjusts hydraulic pressure entering the cylinder body, so that the current of the driving motor is controlled within a specified range. The adjustment of the hydraulic pressure can adopt variable, frequency conversion, pressure adjustment and other methods. According to the hydraulic power-assisted electric cylinder and the control method, heavy load control can be achieved by using smaller control current under the hydraulic power assistance through controlling the current of the driving motor. The hydraulic power-assisted electric cylinder and the control method are simple and convenient to use, stable and reliable in working, and convenient to use and maintain. The hydraulic power-assisted electric cylinder has output tens of times more than that of an electric cylinder with the same dimension. Due to no valve throttling, compared with a valve-controlled hydraulic cylinder, the efficiency is improved greatly, the calorific value is small, and the noise is low.

The invention discloses a flow collecting valve, comprising the following components: a first shuttle valve; a solenoid valve comprising a first oil port and a second oil port, wherein the first oil port is connected with an oil outlet of the first shuttle valve; a first hydraulic control reversing valve comprising the first oil port and the second oil port, wherein the first hydraulic control reversing valve controls the oil ports to connect with the second oil port of the solenoid valve; and a hydraulic control valve comprising the first oil port and the second oil port, wherein the hydraulic control valve controls the oil ports to connect with the second oil port of the solenoid valve, and has two working states, at the first working state, the first oil port and the second oil port ofthe hydraulic control valve are disconnected, and at the second working state, the first oil port and the second oil port of the hydraulic control valve are communicated. The flow collecting valve can ensure that a telescopic oil cylinder and a luffing oil cylinder of the crane both have higher extension efficiency and lower retraction energy consumption. The invention further discloses a crane hydraulic control system with the flow collecting valve.

The invention discloses an orthopedic lift type leg positioning perforation treatment platform which comprises a base. A slide groove is formed in the left side of the upper end of the base, a rolleris arranged inside the slide groove, a first connecting rod is hinged to the upper end of the roller, a second connecting rod is hinged to the right side of the upper end of the base, a fixing cylinder is hinged to the upper end of the second connecting rod, a trapezoidal block is mounted at the upper end of the fixing cylinder, a lifting plate is connected with the trapezoidal block and the upperend of the first connecting rod, a telescopic cylinder is mounted inside the fixing cylinder, a fixing column is mounted on the left side of the upper end of the lifting plate, a lifting column is mounted at the upper end of the fixing column, a limit sleeve is mounted at the upper end of the lifting column, a screw is mounted inside the limit sleeve, a movable block is mounted in the middle of the screw, a motor base is mounted at the lower end of the movable block, lower positioning plates are mounted on two sides of the upper end of the lifting plate, and upper positioning plates are connected with the middles of the upper ends of the lower positioning plates. The orthopedic lift type leg positioning perforation treatment platform has the advantages that the ascending and descending heights of the lifting plate can be adjusted, the legs of patients can be positioned, and accordingly perforation requirements can be met during leg treatment.

The invention relates to a single-blade installation hanger for a wind power generating set. The main boom is installed in the middle of the main girder body. The lower end of the main boom is supported on the lower end of the main girder by a pin shaft and can rotate around the pin shaft. There is also a tilting cylinder between the main beam and the two ends of the tilting cylinder are respectively hinged on the lower end of the main beam and the middle part of the main boom. The two ends of the main beam are respectively equipped with blade clamping devices, which are adjusted by the expansion and contraction of the tilting cylinder. The hoisting angle between the main boom 2 and the main beam body, so as to realize the inclination angle change of the blade clamped in the blade clamping device in the air -30°~30°; the rear end of the upper clamp and the lower clamp of the blade clamping device The clamping cylinder and the adjusting cylinder are respectively installed between the clamping column and the two ends of the adjusting cylinder are respectively hinged on the upper part of the clamping column and the rear end of the lower clamp, and the two ends of the clamping cylinder are respectively hinged on the middle and upper part of the clamping column. On the rear end of the clamp; the upper clamp and the lower clamp realize closing and angle adjustment by adjusting the expansion and contraction of the oil cylinder and the clamping oil cylinder.

The invention provides a full-automatic water floating garbage and aquatic plant salvage compression ship. The head part of a fore peak is obliquely cut and opened to form two heads, a seaweed collection device is installed between the two heads, and a compression type storage transit cabin and a storage unloading cabin are sequentially arranged on a deck from the bow to the stern. A compression device is additionally arranged in the compression type storage transit cabin, a telescopic cylinder pushes a compression plate to the rear end of the transit cabin, to compress seaweeds and garbage in the cabin, when the seaweeds in the transit cabin is compressed to reach a certain pressure, a hydraulic cylinder controls a retaining door to be opened, and thus the seaweeds and garbage are sent to the storage unloading cabin to wait for unloading. By applying the full-automatic water floating garbage and aquatic plant salvage compression ship, the seaweeds in the storage transit cabin can be compressed, water is removed, the actual loading capacity of the storage transit cabin is improved, the unloading frequency is lowered, and extra fuel consumption caused by high-frequency returning and unloading is avoided, so that the work efficiency is greatly enhanced and the operation cost is reduced.